/* roulang page: index */
:root{
  --bg:#060A12;
  --bg-soft:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --cyan:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --t1:#E8F1FF;
  --t2:#9FB0C9;
  --t3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-strong:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--mint);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section.soft{background:var(--bg-soft);}
.sec-head{max-width:780px;margin-bottom:48px;}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--mint);border:1px solid var(--line-strong);background:rgba(99,245,208,.07);border-radius:999px;padding:4px 12px;margin-bottom:16px;}
.sec-title{position:relative;font-size:32px;line-height:1.3;font-weight:700;padding-left:14px;letter-spacing:.01em;}
.sec-title::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--mint);}
.sec-sub{margin-top:14px;color:var(--t2);font-size:16px;line-height:1.85;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease,filter .25s ease;}
.btn-lg{height:48px;padding:0 28px;}
.btn-block{width:100%;}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--mint));color:#03121c;box-shadow:var(--glow);}
.btn-primary:hover{color:#03121c;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(43,179,255,.6),0 14px 34px rgba(43,179,255,.36);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(43,179,255,.4),0 6px 18px rgba(43,179,255,.24);}
.btn-ghost{background:rgba(122,220,255,.06);border-color:var(--line);color:var(--t1);}
.btn-ghost:hover{color:var(--mint);border-color:var(--line-strong);background:rgba(99,245,208,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn-plain{background:none;border:0;color:var(--cyan);padding:0;height:auto;font-size:14px;}
.btn-plain:hover{color:var(--mint);}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;padding:4px 12px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(99,245,208,.08);color:var(--mint);}
.badge-amber{background:var(--amber);border-color:var(--amber);color:#20160a;font-weight:700;}
.badge-dim{border-color:var(--line);background:rgba(122,220,255,.06);color:var(--t2);}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:120;background:rgba(6,10,18,.62);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease;}
.site-header.scrolled{background:rgba(6,10,18,.92);border-bottom-color:var(--line);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);flex:0 0 auto;}
.brand:hover{color:var(--t1);}
.brand-mark{position:relative;width:26px;height:26px;border-radius:8px;border:1.5px solid var(--cyan);box-shadow:0 0 14px rgba(43,179,255,.35);flex:0 0 auto;}
.brand-mark::before{content:"";position:absolute;inset:6px;border-radius:4px;background:linear-gradient(135deg,var(--cyan),var(--mint));}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:.04em;}
.brand-en{font-size:12px;letter-spacing:.32em;color:var(--t3);margin-left:2px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{position:relative;font-size:15px;color:var(--t2);padding:6px 0;}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--mint);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.nav-links a:hover{color:var(--t1);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:rgba(122,220,255,.07);border:1px solid var(--line);color:var(--t1);cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative;transition:background .2s;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);transition:transform .25s ease;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:150px 0 96px;background:var(--bg);}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.2;}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(110% 80% at 22% 12%,rgba(43,179,255,.14),transparent 62%),radial-gradient(90% 70% at 100% 100%,rgba(99,245,208,.09),transparent 60%),linear-gradient(180deg,rgba(6,10,18,.5),var(--bg) 88%);}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);gap:48px;align-items:center;}
.hero h1{margin:20px 0 0;font-size:46px;line-height:1.22;font-weight:800;letter-spacing:-.01em;}
.hero-sub{margin-top:18px;max-width:560px;font-size:17px;line-height:1.85;color:var(--t2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:32px;font-size:14px;color:var(--t2);}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points li::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--mint);flex:0 0 auto;}
.promo-card{position:relative;background:var(--glass);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);}
.promo-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.promo-head h2{font-size:16px;font-weight:600;color:var(--t1);}
.promo-price{display:flex;align-items:flex-end;gap:10px;margin-top:18px;}
.promo-price .num{font-size:44px;line-height:1;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.promo-price .unit{font-size:14px;color:var(--t3);padding-bottom:4px;}
.promo-old{margin-top:8px;font-size:14px;color:var(--t3);}
.promo-old s{color:var(--t3);}
.countdown{display:flex;gap:10px;margin-top:20px;}
.cd-block{flex:1;text-align:center;background:rgba(6,10,18,.6);border:1px solid var(--line);border-radius:var(--r-sm);padding:8px 0;}
.cd-block b{display:block;font-size:22px;line-height:1.3;color:var(--amber);font-variant-numeric:tabular-nums;font-weight:700;}
.cd-block span{font-size:11px;letter-spacing:.08em;color:var(--t3);}
.cd-block.cd-sec b{color:var(--coral);}
.progress{margin-top:20px;}
.progress-bar{height:8px;border-radius:999px;background:rgba(122,220,255,.12);overflow:hidden;}
.progress-bar i{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--mint));}
.progress-meta{display:flex;justify-content:space-between;gap:12px;margin-top:8px;font-size:13px;color:var(--t2);}
.progress-meta b{color:var(--amber);font-variant-numeric:tabular-nums;}

/* ===== 信任数字条 ===== */
.trust-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(11,18,32,.72);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0;}
.trust-item{text-align:center;}
.trust-num{font-size:30px;font-weight:800;color:var(--mint);font-variant-numeric:tabular-nums;line-height:1.3;}
.trust-num small{font-size:16px;font-weight:600;margin-left:2px;}
.trust-label{font-size:14px;color:var(--t2);margin-top:2px;}

/* ===== 优惠阶梯 ===== */
.ladder{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.ladder::before{content:"";position:absolute;top:15px;left:6%;right:6%;height:1px;background:linear-gradient(90deg,rgba(255,194,75,.08),rgba(255,194,75,.5),rgba(255,194,75,.08));}
.ladder-step{position:relative;padding-top:40px;}
.ladder-dot{position:absolute;top:7px;left:0;width:16px;height:16px;border-radius:50%;background:var(--bg);border:2px solid var(--amber);transition:box-shadow .25s ease;}
.ladder-step.current .ladder-dot{background:var(--amber);box-shadow:0 0 0 5px rgba(255,194,75,.18);}
.ladder-card{height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.ladder-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.ladder-step.current .ladder-card{border-color:rgba(255,194,75,.45);box-shadow:0 0 0 1px rgba(255,194,75,.22);}
.ladder-threshold{font-size:20px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;}
.ladder-threshold small{font-size:13px;color:var(--t3);font-weight:400;margin-left:4px;}
.ladder-title{margin-top:6px;font-size:16px;font-weight:600;color:var(--t1);}
.ladder-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--t2);}
.ladder-card ul li{position:relative;padding-left:16px;line-height:1.7;}
.ladder-card ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--mint);}
.ladder-flag{margin-top:14px;font-size:12px;letter-spacing:.08em;color:var(--amber);}

/* ===== 套餐对比 ===== */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan-card{position:relative;display:flex;flex-direction:column;background:var(--glass);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.plan-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);}
.plan-card.featured{transform:translateY(-8px);border-color:rgba(255,194,75,.45);box-shadow:0 0 0 1px rgba(255,194,75,.28),0 18px 44px rgba(0,0,0,.5);}
.plan-card.featured:hover{transform:translateY(-12px);}
.plan-flag{position:absolute;top:-12px;right:20px;}
.plan-name{font-size:20px;font-weight:700;}
.plan-desc{margin-top:8px;font-size:14px;color:var(--t2);min-height:48px;}
.plan-price{display:flex;align-items:flex-end;gap:6px;margin-top:16px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.plan-price .num{font-size:36px;line-height:1;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.plan-price .cur{font-size:16px;color:var(--amber);padding-bottom:4px;}
.plan-price .unit{font-size:13px;color:var(--t3);padding-bottom:4px;}
.plan-list{margin-top:18px;display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--t2);flex:1;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;line-height:1.7;}
.plan-list li .mk{flex:0 0 auto;width:16px;height:16px;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;margin-top:4px;}
.plan-list li .mk.ok{background:rgba(99,245,208,.16);color:var(--mint);}
.plan-list li .mk.no{background:rgba(110,127,151,.14);color:var(--t3);}
.plan-list li strong{color:var(--t1);font-weight:600;}
.plan-cta{margin-top:22px;}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1;}
.news-body h3{font-size:18px;line-height:1.5;font-weight:700;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--t1);}
.news-body h3 a:hover{color:var(--mint);}
.news-sum{font-size:14px;line-height:1.8;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);}
.news-foot .go{color:var(--cyan);font-weight:600;}
.news-empty{grid-column:1/-1;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-lg);padding:32px;}
.news-empty .ico{width:46px;height:46px;border-radius:14px;border:1px solid var(--line-strong);background:rgba(99,245,208,.08);display:flex;align-items:center;justify-content:center;color:var(--mint);font-size:20px;font-weight:700;}
.news-empty p{color:var(--t2);font-size:15px;}

/* ===== 限时横条 ===== */
.urgent{background:linear-gradient(120deg,rgba(255,107,87,.16),rgba(255,194,75,.08));border-top:1px solid rgba(255,107,87,.3);border-bottom:1px solid rgba(255,107,87,.3);padding:24px 0;}
.urgent-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.urgent-text{font-size:16px;color:var(--t1);}
.urgent-text b{color:var(--amber);font-variant-numeric:tabular-nums;}
.urgent-right{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.urgent .countdown{margin-top:0;min-width:230px;}

/* ===== 咨询表单 ===== */
.consult-grid{display:grid;grid-template-columns:40% 1fr;gap:40px;align-items:start;}
.consult-copy h2{font-size:30px;line-height:1.35;font-weight:700;}
.consult-copy p{margin-top:16px;color:var(--t2);font-size:15px;line-height:1.85;}
.consult-points{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.consult-points li{display:flex;gap:12px;font-size:14px;color:var(--t2);line-height:1.7;}
.consult-points li .dot{flex:0 0 auto;width:8px;height:8px;border-radius:2px;background:var(--mint);margin-top:9px;}
.consult-points li strong{color:var(--t1);font-weight:600;}
.form-card{position:relative;background:var(--glass);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);}
.form-card .corner{position:absolute;top:20px;right:20px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field-full{grid-column:1/-1;}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:6px;}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;color:var(--t1);font-size:15px;font-family:inherit;background:rgba(6,10,18,.55);border:1px solid var(--line);border-radius:var(--r-sm);transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;-webkit-appearance:none;appearance:none;}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239FB0C9' stroke-width='2'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--mint);box-shadow:0 0 0 3px rgba(99,245,208,.16);background:rgba(6,10,18,.8);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--coral);box-shadow:0 0 0 3px rgba(255,107,87,.14);}
.err-msg{display:none;margin-top:6px;font-size:12px;color:var(--coral);}
.field.has-error .err-msg{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--t2);line-height:1.7;margin-bottom:18px;}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:#63F5D0;flex:0 0 auto;}
.form-note{margin-top:12px;font-size:12px;color:var(--t3);text-align:center;}

/* ===== FAQ ===== */
.faq{max-width:920px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
.faq-item.open{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(99,245,208,.14);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 20px;background:none;border:0;color:var(--t1);font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;}
.faq-q:hover{color:var(--mint);}
.faq-icon{flex:0 0 auto;width:22px;height:22px;border-radius:7px;border:1px solid var(--line-strong);color:var(--mint);display:inline-flex;align-items:center;justify-content:center;font-size:15px;line-height:1;transition:background .25s ease,color .25s ease;}
.faq-item.open .faq-icon{background:rgba(99,245,208,.16);}
.faq-a{display:none;padding:0 20px 18px;border-top:1px solid var(--line);padding-top:16px;font-size:15px;color:var(--t2);line-height:1.85;}
.faq-item.open .faq-a{display:block;}

/* ===== CTA 横条 ===== */
.cta-band{padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;background:rgba(20,32,54,.55);backdrop-filter:blur(18px) saturate(120%);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 36px;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);}
.cta-inner h2{font-size:24px;line-height:1.4;font-weight:700;}
.cta-inner p{margin-top:8px;font-size:14px;color:var(--t2);}

/* ===== 页脚 ===== */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);margin-bottom:16px;}
.footer-col p{font-size:14px;color:var(--t2);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--t1);margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--t2);}
.footer-col ul li a:hover{color:var(--mint);}
.footer-contact li{font-size:14px;color:var(--t2);margin-bottom:10px;}
.footer-contact li b{color:var(--t1);font-weight:600;}
.qr-box{width:104px;height:104px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(122,220,255,.06);display:flex;align-items:center;justify-content:center;color:var(--t3);font-size:12px;letter-spacing:.08em;margin-top:14px;}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--t3);}

/* ===== 响应式 ===== */
@media screen and (max-width:1199px){
  .section{padding:76px 0;}
  .hero{padding:120px 0 76px;}
  .hero h1{font-size:38px;}
  .hero-grid{gap:32px;}
  .sec-title{font-size:28px;}
  .ladder{gap:16px;}
  .footer-cols{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1/-1;}
}
@media screen and (max-width:899px){
  .container{padding:0 20px;}
  .nav-wrap{height:68px;}
  .nav-links{position:fixed;top:68px;left:0;right:0;bottom:0;display:none;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:20px 20px 32px;background:rgba(6,10,18,.97);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);overflow-y:auto;}
  .nav-links.open{display:flex;}
  .nav-links a{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);color:var(--t1);}
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--mint);}
  .nav-actions{margin-left:auto;gap:8px;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:104px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .sec-title{font-size:26px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:20px;padding:28px 0;}
  .ladder{grid-template-columns:1fr;gap:0;}
  .ladder::before{top:0;bottom:0;left:7px;right:auto;width:1px;height:auto;background:linear-gradient(180deg,rgba(255,194,75,.08),rgba(255,194,75,.5),rgba(255,194,75,.08));}
  .ladder-step{padding:0 0 20px 32px;}
  .ladder-dot{top:8px;left:0;}
  .plans{display:flex;overflow-x:auto;gap:16px;padding-bottom:14px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;}
  .plan-card{flex:0 0 82%;min-width:270px;scroll-snap-align:start;}
  .plan-card.featured{transform:translateY(-4px);}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .urgent-wrap{flex-direction:column;align-items:flex-start;gap:16px;}
  .urgent-right{width:100%;justify-content:space-between;}
  .consult-grid{grid-template-columns:1fr;gap:28px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-inner{padding:26px 24px;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-col:last-child{grid-column:auto;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:88px 0 56px;}
  .hero h1{font-size:28px;line-height:1.3;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-points{gap:14px;font-size:13px;}
  .sec-head{margin-bottom:32px;}
  .sec-title{font-size:24px;}
  .promo-card{padding:22px;}
  .promo-price .num{font-size:36px;}
  .trust-num{font-size:24px;}
  .news-grid{grid-template-columns:1fr;}
  .plan-card{flex:0 0 88%;}
  .urgent-right{flex-direction:column;align-items:stretch;gap:14px;}
  .urgent .countdown{min-width:0;}
  .form-card{padding:20px;}
  .form-card .corner{position:static;display:inline-flex;margin-bottom:14px;}
  .faq-q{font-size:15px;padding:16px;}
  .faq-a{padding:14px 16px 16px;}
  .cta-inner{padding:24px 20px;}
  .cta-inner .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#060A12;
  --bg-soft:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --main:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-mint:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
  --gap:24px;
  --sec:96px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md);}
a{color:var(--main);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--mint);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(6,10,18,.9);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(0,0,0,.4);}
.nav-wrap{display:flex;align-items:center;gap:24px;min-height:76px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--main),var(--mint));
  box-shadow:0 0 0 1px rgba(43,179,255,.5),0 6px 18px rgba(43,179,255,.32);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:4px;
  background:rgba(6,10,18,.85);
}
.brand-cn{font-size:20px;font-weight:700;letter-spacing:.06em;}
.brand-en{font-size:11px;letter-spacing:.32em;color:var(--text-3);text-transform:uppercase;margin-left:2px;padding-top:4px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  color:var(--text-2);font-size:15px;padding:6px 0;position:relative;
  transition:color .25s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--mint);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover,.nav-links a.is-active{color:var(--text);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);background:transparent;position:relative;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:var(--text);
  transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span::before{content:"";transform:translate(-50%,-7px);}
.nav-toggle span::after{content:"";transform:translate(-50%,5px);}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translate(-50%,0) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translate(-50%,0) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  border:1px solid transparent;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,filter .25s ease;
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--main),var(--mint));
  color:#04121C;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);color:#04121C;box-shadow:0 0 0 1px rgba(99,245,208,.6),0 14px 34px rgba(43,179,255,.4);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(20,32,54,.5);border-color:var(--line);color:var(--text);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:var(--line-mint);color:var(--mint);}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{height:48px;padding:0 26px;font-size:15px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{
  background:linear-gradient(180deg,rgba(11,18,32,.9),rgba(6,10,18,0));
  border-bottom:1px solid var(--line);
  padding:22px 0;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--mint);}
.crumb .sep{color:rgba(110,127,151,.7);}
.crumb .now{color:var(--mint);}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:56px 0 40px;
  background-image:linear-gradient(180deg,rgba(6,10,18,.86),rgba(6,10,18,.97)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,179,255,.22),transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--mint);border:1px solid var(--line-mint);border-radius:999px;
  padding:5px 14px;background:rgba(99,245,208,.08);
}
.article-hero h1{
  font-size:44px;line-height:1.25;margin:18px 0 0;
  letter-spacing:.01em;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:13.5px;color:var(--text-3);}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--main);font-size:12px;}

/* ---------- layout ---------- */
.article-main{padding:56px 0 0;background:var(--bg);}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:32px;align-items:start;}
.article-panel{
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px 36px 36px;
  box-shadow:var(--shadow);
  min-width:0;
}
.article-figure{margin:0 0 28px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);}
.article-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.article-figure:hover img{transform:scale(1.02);}
.article-figure figcaption{
  font-size:12.5px;color:var(--text-3);padding:10px 14px;background:rgba(16,26,43,.9);
  border-top:1px solid var(--line);
}

/* ---------- article body ---------- */
.article-body{max-width:760px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--text-2);}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;color:var(--text);
  margin:38px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--mint),rgba(99,245,208,.15));
}
.article-body h3{font-size:20px;line-height:1.5;color:var(--text);margin:26px 0 12px;}
.article-body p{margin:0 0 20px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.75em;width:7px;height:7px;border-radius:2px;
  background:var(--mint);
}
.article-body ol{counter-reset:li;list-style:none;}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#04121C;background:var(--mint);
}
.article-body blockquote{
  margin:0 0 22px;padding:18px 22px;
  background:var(--glass);border-left:3px solid var(--mint);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  backdrop-filter:blur(14px);
  color:var(--text);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:8px 0 10px;border:1px solid var(--line);}
.article-body a{color:var(--main);border-bottom:1px solid rgba(43,179,255,.4);}
.article-body a:hover{color:var(--mint);border-bottom-color:var(--line-mint);}
.article-body strong{color:var(--text);font-weight:700;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14.5px;}
.article-body th{background:rgba(16,26,43,.95);color:var(--text);text-align:left;padding:12px 14px;border:1px solid var(--line);font-weight:600;}
.article-body td{padding:12px 14px;border:1px solid var(--line);color:var(--text-2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--radius-md);
  background:rgba(16,26,43,.6);border:1px dashed var(--line);
}
.empty-state i{font-size:34px;color:var(--main);opacity:.8;}
.empty-state h3{margin:16px 0 8px;font-size:20px;color:var(--text);}
.empty-state p{color:var(--text-3);margin-bottom:20px;}

/* ---------- tags ---------- */
.article-tags{max-width:760px;margin:34px auto 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.article-tags .label{font-size:12px;letter-spacing:.08em;color:var(--text-3);}
.chip{
  font-size:12.5px;color:var(--text-2);border:1px solid var(--line);
  border-radius:999px;padding:5px 13px;background:rgba(20,32,54,.6);
  transition:border-color .25s ease,color .25s ease,transform .25s ease;
}
.chip:hover{color:var(--mint);border-color:var(--line-mint);transform:translateY(-2px);}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.side-card h4{
  font-size:13px;letter-spacing:.08em;color:var(--text-3);
  font-weight:600;margin-bottom:14px;text-transform:uppercase;
}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:var(--text-2);padding:9px 10px;border-radius:10px;
  border-left:2px solid transparent;transition:all .25s ease;
}
.side-nav a i{font-size:11px;color:var(--main);}
.side-nav a:hover{background:rgba(43,179,255,.08);color:var(--text);border-left-color:var(--mint);}
.side-promo{background:linear-gradient(160deg,rgba(43,179,255,.16),rgba(99,245,208,.07));border-color:var(--line-mint);}
.side-promo .price{font-size:34px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:.02em;}
.side-promo .price small{font-size:13px;color:var(--text-3);font-weight:500;margin-left:4px;}
.side-promo p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin:10px 0 16px;}
.side-promo .btn{width:100%;}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);line-height:1.6;}
.side-list a:hover{color:var(--mint);}
.side-list span{color:var(--main);font-size:12px;flex:0 0 auto;padding-top:3px;}

/* ---------- post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:32px 0 0;}
.post-link{
  display:block;padding:20px 22px;border-radius:var(--radius-md);
  background:var(--card);border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-link:hover{transform:translateY(-4px);border-color:var(--line-mint);box-shadow:0 18px 40px rgba(0,0,0,.45);}
.post-link .dir{font-size:12px;letter-spacing:.08em;color:var(--text-3);}
.post-link strong{display:block;margin-top:6px;font-size:15.5px;color:var(--text);line-height:1.6;font-weight:600;}
.post-link.next{text-align:right;}

/* ---------- related ---------- */
.related{padding:var(--sec) 0 0;background:var(--bg);}
.sec-head{margin-bottom:36px;max-width:720px;}
.sec-kicker{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--mint);
  border:1px solid var(--line-mint);border-radius:999px;padding:4px 12px;margin-bottom:14px;
  background:rgba(99,245,208,.07);
}
.sec-head h2{
  position:relative;font-size:32px;line-height:1.3;padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--mint),rgba(99,245,208,.1));
}
.sec-head p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:640px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-mint);box-shadow:0 18px 40px rgba(0,0,0,.5);}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;border-radius:0;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.post-card:hover .thumb img{transform:scale(1.04);}
.post-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-card .badge{
  align-self:flex-start;font-size:12px;letter-spacing:.08em;color:var(--mint);
  border:1px solid var(--line-mint);border-radius:999px;padding:3px 11px;
  background:rgba(99,245,208,.08);margin-bottom:12px;
}
.post-card h3{
  font-size:18px;line-height:1.55;margin-bottom:10px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;color:var(--text-3);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px;
}
.post-card .meta i{color:var(--main);transition:transform .25s ease;}
.post-card:hover .meta i{transform:translateX(4px);}

/* ---------- cta band ---------- */
.cta-band{padding:var(--sec) 0;background:var(--bg);}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:36px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(43,179,255,.16),rgba(99,245,208,.06)),var(--card);
  border:1px solid var(--line-mint);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(99,245,208,.18),transparent 70%);pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:660px;}
.cta-text h2{font-size:28px;line-height:1.35;margin-bottom:10px;}
.cta-text p{font-size:15px;color:var(--text-2);}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:64px 0 28px;position:relative;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(99,245,208,.45),transparent);
}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-3);}
.footer-col ul a:hover{color:var(--mint);}
.footer-contact li{font-size:13.5px;color:var(--text-3);}
.footer-contact b{color:var(--text-2);font-weight:600;}
.qr-box{
  margin-top:16px;width:104px;height:104px;border-radius:var(--radius-md);
  border:1px dashed var(--line);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);background:rgba(16,26,43,.6);text-align:center;
}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec:80px;}
  .article-hero h1{font-size:38px;}
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:26px;}
  .article-panel{padding:28px 26px 30px;}
  .nav-links{gap:20px;}
  .nav-links a{font-size:14px;}
}
@media (max-width:899px){
  :root{--sec:72px;--gap:20px;}
  .nav-links{
    position:fixed;left:0;right:0;top:76px;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(6,10,18,.97);backdrop-filter:blur(20px);
    padding:20px 24px 40px;margin:0;
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
    overflow-y:auto;border-top:1px solid var(--line);
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
  .nav-links a{width:100%;padding:15px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-toggle{display:block;}
  .nav-actions .btn-ghost{display:none;}
  .article-grid{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .article-hero{padding:44px 0 34px;}
  .article-hero h1{font-size:32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{padding:30px 26px;}
  .cta-text h2{font-size:24px;}
}
@media (max-width:639px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .nav-wrap{min-height:66px;gap:12px;}
  .nav-links{top:66px;padding:16px 16px 36px;}
  .brand-cn{font-size:18px;}
  .brand-en{display:none;}
  .nav-actions .btn-primary{height:40px;padding:0 14px;font-size:13.5px;}
  .article-hero h1{font-size:27px;line-height:1.35;}
  .article-panel{padding:20px 18px 24px;border-radius:var(--radius-md);}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .post-nav{grid-template-columns:1fr;}
  .post-link.next{text-align:left;}
  .card-grid{grid-template-columns:1fr;}
  .sec-head h2{font-size:25px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-cols{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-meta{gap:8px 16px;font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --bg:#060A12;
  --bg-soft:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --primary:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-strong:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --radius:20px;
  --radius-sm:14px;
  --radius-btn:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --nav-h:76px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{font-family:var(--font-cn);color:var(--text);margin:0;font-weight:700;line-height:1.35}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;background-color:transparent;transition:color .25s ease,opacity .25s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
[id]{scroll-margin-top:96px}

/* ---------- 品牌标记 ---------- */
.brand-mark{
  width:24px;height:24px;border:2px solid var(--mint);border-radius:7px;
  position:relative;flex:none;box-shadow:inset 0 0 12px rgba(99,245,208,.22);
}
.brand-mark::after{content:"";position:absolute;inset:5px;border-radius:3px;background:var(--primary);opacity:.85}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:.04em;color:var(--text)}
.brand-en{font-size:11px;letter-spacing:.34em;color:var(--mint);font-weight:600;text-transform:lowercase}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(6,10,18,.72);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.86);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{position:relative;padding:6px 0;font-size:15px;color:var(--text-2)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--mint);border-radius:2px;transition:width .25s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%}
.nav-links a.is-active{color:var(--text);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;flex:none;padding:0;cursor:pointer;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:rgba(20,32,54,.5);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform .25s ease,background .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0;transform:none}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,filter .25s ease;
}
.btn-lg{height:48px;padding:0 28px;font-size:16px;border-radius:999px}
.btn-block{width:100%}
.btn-primary{
  background:linear-gradient(135deg,#2BB3FF 0%,#63F5D0 100%);
  color:#04121C;font-weight:700;
  box-shadow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
}
.btn-primary:hover{filter:brightness(1.08);color:#04121C;box-shadow:0 0 0 1px rgba(43,179,255,.6),0 14px 34px rgba(43,179,255,.36)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--text);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.btn-ghost:hover{color:var(--text);border-color:var(--line-strong);background:rgba(20,32,54,.78)}
.btn-ghost:active{transform:translateY(1px)}
.btn-line{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-line:hover{color:var(--text);border-color:var(--line-strong)}

/* ---------- 标签 / 徽章 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--mint);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--mint)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--mint);border:1px solid var(--line-strong);background:rgba(99,245,208,.08);
}
.badge-amber{color:#1A1205;background:var(--amber);border-color:var(--amber)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:64px 0 80px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 82% 16%,rgba(43,179,255,.18),transparent 58%),
    linear-gradient(180deg,rgba(6,10,18,.88) 0%,rgba(6,10,18,.97) 100%);
}
.page-head-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.55fr .85fr;gap:48px;align-items:end}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--mint)}
.breadcrumb .current{color:var(--text-2)}
.page-head h1{
  font-size:46px;line-height:1.22;letter-spacing:-.01em;margin:14px 0 18px;
}
.page-head .lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:640px;margin:0}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.head-meta li{
  font-size:13px;color:var(--text-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(16,26,43,.6);
}
.head-card{
  padding:28px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.head-card-label{font-size:12px;letter-spacing:.16em;color:var(--amber);font-weight:700;margin-bottom:12px}
.head-card-text{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:22px}
.head-card-note{display:block;text-align:center;margin-top:14px;font-size:12px;color:var(--text-3)}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  position:relative;padding-left:18px;font-size:32px;line-height:1.3;margin:12px 0 14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:2px;background:var(--mint);
}
.section-head p{color:var(--text-2);font-size:16px;margin:0}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:88px}
.split--flip .split-media{order:2}
.split-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:16/10;
  background:var(--card);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.split-media:hover img{transform:scale(1.04)}
.split-body h2{font-size:30px;line-height:1.32;margin-bottom:16px}
.split-body > p{color:var(--text-2);margin-bottom:26px}
.point-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(122,220,255,.14)}
.point-list li:last-child{border-bottom:0;padding-bottom:0}
.point-dot{
  flex:none;width:9px;height:9px;margin-top:11px;border-radius:2px;
  background:var(--mint);box-shadow:0 0 10px rgba(99,245,208,.5);
}
.point-list h3{font-size:17px;margin-bottom:4px;font-weight:600}
.point-list p{font-size:14px;line-height:1.8;color:var(--text-3);margin:0}

/* ---------- 流程 ---------- */
.steps{display:flex;flex-flow:row wrap;gap:24px}
.steps > .cell{width:auto;flex:1 1 230px;min-width:0}
.step{
  height:100%;padding:26px 24px;border-radius:var(--radius);
  background:rgba(20,32,54,.55);border:1px solid rgba(122,220,255,.14);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);background:rgba(20,32,54,.75)}
.step-no{
  font-size:30px;font-weight:800;color:var(--mint);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  line-height:1;margin-bottom:16px;display:block;
}
.step h3{font-size:19px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.8;color:var(--text-3);margin:0}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.scene-thumb{aspect-ratio:16/9;overflow:hidden;background:#0A1424}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:19px}
.scene-body p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0}
.scene-tag{
  align-self:flex-start;font-size:12px;letter-spacing:.08em;color:var(--mint);
  border:1px solid var(--line-strong);background:rgba(99,245,208,.08);
  padding:4px 11px;border-radius:999px;
}

/* ---------- 数字条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.stat{
  padding:28px 24px;border-radius:var(--radius);
  background:rgba(16,26,43,.9);border:1px solid var(--line);
}
.stat-num{
  display:block;font-size:40px;line-height:1.1;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;margin-bottom:10px;
}
.stat-label{font-size:15px;color:var(--text);font-weight:600;margin-bottom:6px}
.stat-desc{font-size:13px;line-height:1.75;color:var(--text-3);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(16,26,43,.72);overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq + .faq{margin-top:12px}
.faq.is-open{border-color:var(--line-strong);background:rgba(16,26,43,.92)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.6;
}
.faq-btn:hover{color:var(--mint)}
.faq-icon{position:relative;flex:none;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--mint);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:16px;height:2px}
.faq-icon::after{width:2px;height:16px}
.faq.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-panel-inner{
  padding:0 24px 22px;border-top:1px solid rgba(122,220,255,.12);
  padding-top:18px;font-size:15px;line-height:1.85;color:var(--text-2);
}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:40px;border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(43,179,255,.14),rgba(99,245,208,.08));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-bar h2{font-size:26px;line-height:1.35;margin-bottom:8px}
.cta-bar p{font-size:14px;color:var(--text-2);margin:0}
.cta-bar-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--footer-bg);border-top:1px solid rgba(122,220,255,.1);
  padding:72px 0 32px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(99,245,208,.45),transparent);
}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85;color:var(--text-3);margin:0;max-width:320px}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:var(--text);margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-3)}
.footer-col ul a:hover{color:var(--mint)}
.footer-contact li{font-size:14px;color:var(--text-3)}
.footer-contact b{color:var(--text-2);font-weight:600}
.qr-box{
  margin-top:16px;padding:14px;border-radius:var(--radius-sm);
  border:1px dashed rgba(122,220,255,.22);text-align:center;
  font-size:12px;color:var(--text-3);max-width:160px;
}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(122,220,255,.1);
  font-size:13px;color:var(--text-3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:1199px){
  .page-head h1{font-size:40px}
  .section{padding:80px 0}
  .split{gap:40px}
  .split-body h2{font-size:27px}
  .nav-links{gap:20px}
}
@media (max-width:899px){
  :root{--nav-h:64px}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;z-index:110;
    display:flex;flex-flow:row wrap;align-content:flex-start;gap:12px;
    padding:24px;overflow-y:auto;
    background:rgba(6,10,18,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{
    flex:1 1 calc(50% - 6px);padding:16px;font-size:15px;
    border:1px solid var(--line);border-radius:var(--radius-sm);
    background:rgba(20,32,54,.5);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{border-color:var(--line-strong);color:var(--mint)}
  .page-head{padding:44px 0 56px}
  .page-head-inner{grid-template-columns:1fr;gap:32px;align-items:start}
  .page-head h1{font-size:34px}
  .page-head .lead{font-size:16px}
  .section{padding:72px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .split + .split{margin-top:64px}
  .split--flip .split-media{order:0}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{padding:32px}
  .cta-bar h2{font-size:22px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .nav-actions .btn-ghost{display:none}
  .page-head h1{font-size:28px;line-height:1.3}
  .page-head .lead{font-size:15px}
  .breadcrumb{font-size:12px;margin-bottom:16px}
  .head-meta li{font-size:12px;padding:6px 12px}
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .split-body h2{font-size:23px}
  .scene-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:16px}
  .step-no{font-size:26px}
  .stat-num{font-size:34px}
  .steps > .cell{flex:1 1 100%}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px}
  .cta-bar-actions{width:100%}
  .cta-bar-actions .btn{flex:1 1 100%}
  .faq-btn{font-size:15px;padding:18px}
  .faq-panel-inner{padding:16px 18px 20px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:40px}
  .site-footer{padding:56px 0 28px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
  --bg:#060A12;
  --band:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --primary:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-mint:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --r-lg:20px;
  --r-md:14px;
  --r-btn:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --container:1200px;
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:64px;--s7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--mint);}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--s3);
  padding-right:var(--s3);
}
.grid-x{max-width:100%;}
main{display:block;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.62);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
}
.site-header.is-stuck{
  background:rgba(6,10,18,.86);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  backdrop-filter:blur(18px) saturate(130%);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--s3);
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:22px;height:22px;flex:0 0 22px;border-radius:7px;
  border:1.5px solid var(--mint);
  background:linear-gradient(135deg,rgba(43,179,255,.55),rgba(99,245,208,.12));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06),0 0 14px rgba(99,245,208,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:5px;border-radius:3px;
  border:1px solid rgba(43,179,255,.7);
}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:.06em;}
.brand-en{
  font-size:11px;letter-spacing:.34em;color:var(--text-3);
  font-weight:600;text-transform:uppercase;padding-top:2px;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  padding:10px 12px;
  border-radius:8px;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--mint);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(43,179,255,.08);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-btn);
  background:rgba(20,32,54,.6);
  border:1px solid var(--line);
  cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:rotate(45deg);top:0;}
.nav-toggle.is-open span::after{transform:rotate(-45deg);top:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  color:#04121C;
  background:linear-gradient(135deg,#2BB3FF 0%,#63F5D0 100%);
  box-shadow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
}
.btn-primary:hover{
  color:#04121C;
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(99,245,208,.6),0 14px 34px rgba(43,179,255,.4);
}
.btn-outline{
  color:var(--text);
  background:rgba(20,32,54,.5);
  border-color:var(--line);
  backdrop-filter:blur(12px);
}
.btn-outline:hover{
  color:var(--text);
  border-color:var(--line-mint);
  background:rgba(28,44,70,.66);
  transform:translateY(-2px);
}
.btn-ghost{
  color:var(--text-2);
  background:rgba(255,255,255,.03);
  border-color:var(--line);
}
.btn-ghost:hover{color:var(--text);border-color:var(--line-mint);}
.btn-link{
  height:auto;padding:0;color:var(--mint);
  background:none;border:none;font-weight:600;
}
.btn-link:hover{color:var(--primary);}
.btn-lg{height:48px;padding:0 26px;font-size:15px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;
  color:var(--mint);
  border:1px solid var(--line-mint);
  background:rgba(99,245,208,.08);
}
.badge-amber{
  color:#2A1B00;background:var(--amber);border-color:var(--amber);
  font-weight:700;
}

/* ============ 面包屑 & 页头 ============ */
.page-hero{
  position:relative;
  padding:var(--s6) 0 var(--s6);
  background-image:
    radial-gradient(120% 90% at 82% 12%,rgba(43,179,255,.20),transparent 58%),
    radial-gradient(80% 70% at 8% 100%,rgba(99,245,208,.10),transparent 60%),
    linear-gradient(rgba(6,10,18,.90),rgba(6,10,18,.96)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover,cover,cover,cover;
  background-position:center,center,center,center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:460px;height:460px;
  border-radius:50%;border:1px solid rgba(43,179,255,.16);
  pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:var(--s4);
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb em{font-style:normal;color:var(--text-2);}
.hero-row{
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:var(--s5);align-items:end;
}
.hero-text h1{
  font-size:48px;line-height:1.22;font-weight:800;letter-spacing:-.01em;
  margin:var(--s2) 0 var(--s2);
}
.hero-text p{
  color:var(--text-2);font-size:17px;max-width:640px;
}
.hero-side{
  display:flex;flex-direction:column;gap:12px;
  padding:var(--s3);
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
}
.hero-side .side-note{
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.hero-side .side-row{display:flex;gap:10px;flex-wrap:wrap;}
.hero-side .side-row .btn{flex:1 1 140px;}

/* ============ 板块通用 ============ */
.section{padding:var(--s7) 0;}
.section-band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:var(--s5);}
.section-head h2{
  position:relative;
  font-size:32px;line-height:1.32;font-weight:700;
  padding-left:16px;margin-top:10px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:linear-gradient(180deg,var(--mint),rgba(43,179,255,.2));
}
.section-head p{color:var(--text-2);margin-top:12px;}
.eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--mint);
  text-transform:uppercase;font-weight:600;
}

/* ============ 能力矩阵 2×3 ============ */
.matrix-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--s3);
}
.matrix-card{
  position:relative;
  padding:var(--s3);
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
  overflow:hidden;
}
.matrix-card::before{
  content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transition:width .35s ease;
}
.matrix-card:hover{
  transform:translateY(-4px);
  border-color:rgba(99,245,208,.5);
  background:rgba(26,40,66,.66);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px rgba(0,0,0,.5);
}
.matrix-card:hover::before{width:100%;}
.m-num{
  display:block;
  font-size:34px;font-weight:800;line-height:1;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  color:transparent;
  -webkit-text-stroke:1px rgba(99,245,208,.65);
  margin-bottom:var(--s2);
}
.matrix-card h3{font-size:20px;line-height:1.45;font-weight:700;margin-bottom:10px;}
.matrix-card p{color:var(--text-2);font-size:15px;}
.m-meta{
  margin-top:var(--s2);padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px;
}
.tag{
  font-size:12px;letter-spacing:.06em;color:var(--text-2);
  padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);background:rgba(43,179,255,.06);
}

/* ============ 流程 ============ */
.flow{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--s3);counter-reset:flow;
}
.flow-step{
  position:relative;
  padding:var(--s3) var(--s3) var(--s3);
  border-radius:var(--r-md);
  background:rgba(16,26,43,.72);
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.flow-step:hover{border-color:rgba(99,245,208,.42);transform:translateY(-4px);}
.flow-step::after{
  content:"";position:absolute;right:-16px;top:44px;width:16px;height:1px;
  background:linear-gradient(90deg,var(--line-mint),transparent);
}
.flow-step:last-child::after{display:none;}
.flow-step .fs-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  color:#04121C;background:linear-gradient(135deg,var(--primary),var(--mint));
  margin-bottom:14px;
}
.flow-step h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.8;}
.flow-step .fs-out{
  margin-top:12px;font-size:13px;color:var(--mint);
  display:flex;gap:6px;align-items:flex-start;
}
.flow-step .fs-out::before{content:"▸";line-height:1.8;}

/* ============ 保障 / 数据条 ============ */
.guard-row{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:var(--s5);align-items:center;
}
.figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/9;background:var(--card);
}
.figure img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.figure:hover img{transform:scale(1.04);}
.figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:26px 18px 14px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(5,8,16,.9));
}
.stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--s2);margin-bottom:var(--s3);
}
.stat{
  padding:18px;
  border-radius:var(--r-md);
  background:rgba(16,26,43,.8);
  border:1px solid var(--line);
}
.stat b{
  display:block;
  font-size:32px;line-height:1.1;font-weight:800;
  color:var(--amber);font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat span{display:block;font-size:13px;color:var(--text-2);margin-top:6px;}
.guard-text p{color:var(--text-2);margin-bottom:14px;}
.guard-text p:last-child{margin-bottom:0;}

/* ============ 适用场景 ============ */
.scene-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);
  gap:var(--s5);align-items:center;
}
.scene-list{display:grid;gap:12px;}
.scene-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px;
  border-radius:var(--r-md);
  background:rgba(16,26,43,.72);
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.scene-item:hover{border-color:rgba(99,245,208,.42);transform:translateY(-4px);}
.scene-item .tick{
  flex:0 0 22px;width:22px;height:22px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(99,245,208,.14);border:1px solid var(--line-mint);
  color:var(--mint);font-size:12px;font-weight:700;margin-top:4px;
}
.scene-item h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.scene-item p{font-size:14px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border-radius:var(--r-md);
  background:rgba(16,26,43,.7);
  border:1px solid var(--line);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item.is-open{border-color:rgba(99,245,208,.5);background:rgba(20,34,56,.86);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:none;cursor:pointer;
  color:var(--text);font-size:16px;font-weight:600;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--mint);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line);position:relative;
  transition:border-color .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--mint);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:transform .25s ease,opacity .2s ease;
}
.faq-icon::before{width:12px;height:1.5px;}
.faq-icon::after{width:1.5px;height:12px;}
.faq-item.is-open .faq-icon{border-color:var(--line-mint);background:rgba(99,245,208,.1);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{
  display:none;
  padding:0 20px 20px;
  margin-top:-4px;
  border-top:1px solid var(--line);
  padding-top:16px;
  color:var(--text-2);font-size:15px;
}
.faq-item.is-open .faq-a{display:block;}

/* ============ CTA 横条 ============ */
.cta-bar{
  padding:var(--s5) 0;
  background:
    radial-gradient(90% 140% at 12% 0%,rgba(43,179,255,.22),transparent 60%),
    radial-gradient(80% 120% at 96% 100%,rgba(99,245,208,.14),transparent 62%),
    #070C16;
  border-top:1px solid var(--line);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--s4);
  padding:var(--s4);
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-mint);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
}
.cta-inner h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:8px;}
.cta-inner p{color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(99,245,208,.45),rgba(43,179,255,.35),transparent) 1;
  padding:var(--s6) 0 var(--s3);
  color:var(--text-2);
}
.footer-cols{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:var(--s4);
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;color:var(--text);margin-bottom:14px;
}
.footer-brand:hover{color:var(--text);}
.footer-col p{font-size:14px;line-height:1.85;color:var(--text-3);max-width:340px;}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);
  letter-spacing:.06em;margin-bottom:14px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--mint);}
.footer-contact li{font-size:14px;color:var(--text-3);}
.footer-contact b{color:var(--text-2);font-weight:600;}
.qr-box{
  margin-top:16px;width:108px;height:108px;border-radius:var(--r-md);
  border:1px dashed rgba(122,220,255,.28);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);letter-spacing:.08em;
  background:rgba(20,32,54,.5);
}
.footer-bottom{
  margin-top:var(--s5);padding-top:var(--s3);
  border-top:1px solid rgba(122,220,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ============ 断点：≤1199 平板横 ============ */
@media (max-width:1199px){
  :root{--s7:80px;--s6:56px;--s5:40px;}
  .hero-text h1{font-size:42px;}
  .nav-links a{padding:10px 8px;font-size:14px;}
  .matrix-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
  .footer-cols{grid-template-columns:1.4fr 1fr 1fr;row-gap:var(--s4);}
  .footer-col:last-child{grid-column:1 / -1;}
}
/* ============ 断点：≤899 平板竖 ============ */
@media (max-width:899px){
  :root{--s7:64px;--s6:48px;--s5:32px;}
  .nav-links{
    position:fixed;inset:76px 0 0 0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:20px 24px 32px;
    background:rgba(6,10,18,.96);
    backdrop-filter:blur(20px) saturate(130%);
    -webkit-backdrop-filter:blur(20px) saturate(130%);
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    z-index:55;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{
    display:block;width:100%;padding:14px 12px;font-size:16px;
    border-bottom:1px solid rgba(122,220,255,.08);border-radius:0;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--mint);}
  .nav-toggle{display:block;}
  .nav-actions .btn-ghost{display:none;}
  .hero-row{grid-template-columns:1fr;gap:var(--s4);align-items:start;}
  .hero-text h1{font-size:36px;}
  .hero-side{max-width:520px;}
  .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-step::after{display:none;}
  .guard-row,.scene-row{grid-template-columns:1fr;gap:var(--s4);}
  .figure{aspect-ratio:16/9;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-cols{grid-template-columns:1fr 1fr;}
  .footer-col:first-child{grid-column:1 / -1;}
  .footer-col:last-child{grid-column:auto;}
  .section-head h2{font-size:26px;}
}
/* ============ 断点：≤639 移动 ============ */
@media (max-width:639px){
  :root{--s7:56px;--s6:40px;--s5:28px;--s4:24px;}
  .container{padding-left:var(--s2);padding-right:var(--s2);}
  .nav-wrap{min-height:66px;}
  .nav-links{inset:66px 0 0 0;}
  .brand-en{display:none;}
  .brand-cn{font-size:18px;}
  .nav-actions .btn-primary{height:40px;padding:0 14px;font-size:14px;}
  .hero-text h1{font-size:29px;line-height:1.3;}
  .hero-text p{font-size:15px;}
  .page-hero{padding:var(--s5) 0 var(--s5);}
  .breadcrumb{font-size:12px;margin-bottom:var(--s3);}
  .hero-side{padding:20px;}
  .hero-side .side-row .btn{flex:1 1 100%;}
  .matrix-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr 1fr;gap:12px;}
  .stat b{font-size:26px;}
  .section-head h2{font-size:22px;}
  .section-head p{font-size:15px;}
  .faq-q{font-size:15px;padding:16px;}
  .faq-a{padding:14px 16px 18px;font-size:14px;}
  .cta-inner{padding:24px 20px;}
  .cta-inner h2{font-size:21px;}
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-col:first-child,.footer-col:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .m-num{font-size:28px;}
}

/* roulang page: category3 */
:root{
  --bg:#060A12;
  --bg-2:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --primary:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-strong:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --r-card:20px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.3;}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--mint);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-2);}
.band-line{height:1px;background:linear-gradient(90deg,transparent,rgba(122,220,255,.22),transparent);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(6,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:74px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:26px;height:26px;border-radius:8px;
  border:1.5px solid var(--primary);
  background:
    linear-gradient(135deg,rgba(43,179,255,.35),rgba(99,245,208,.12));
  position:relative;flex:none;
  box-shadow:0 0 0 1px rgba(43,179,255,.12) inset;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:4px;
  border:1.5px solid var(--mint);opacity:.75;
}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:.04em;}
.brand-en{font-size:11px;letter-spacing:.34em;color:var(--text-3);text-transform:uppercase;padding-top:4px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--mint);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--mint);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,filter .25s ease,color .25s ease;
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#2BB3FF 0%,#63F5D0 100%);
  color:#04121C;
  box-shadow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);color:#04121C;
  box-shadow:0 0 0 1px rgba(43,179,255,.62),0 14px 36px rgba(43,179,255,.36);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(18,30,50,.5);
  border-color:var(--line);
  color:var(--text);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:rgba(26,42,68,.75);border-color:var(--line-strong);color:#fff;}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{height:48px;padding:0 28px;font-size:16px;border-radius:999px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-line{
  background:transparent;border-color:var(--line);color:var(--text-2);
}
.btn-line:hover{border-color:var(--line-strong);color:var(--text);}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:rgba(18,30,50,.5);
  border:1px solid var(--line);
  position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;}
.nav-toggle span::after{content:"";top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) rotate(45deg);top:0;}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ===== 通用板块头 ===== */
.sec-head{margin-bottom:44px;}
.sec-label{
  display:inline-block;
  font-size:12px;letter-spacing:.08em;color:var(--mint);
  margin-bottom:12px;text-transform:uppercase;
}
.sec-head h2{
  position:relative;
  padding-left:18px;
  font-size:32px;
  line-height:1.3;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;
  background:var(--mint);border-radius:2px;
}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:16px;max-width:760px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(99,245,208,.08);
  color:var(--mint);
}
.badge-amber{
  background:var(--amber);border-color:var(--amber);color:#231603;font-weight:700;
}
.badge-muted{border-color:var(--line);background:rgba(20,32,54,.55);color:var(--text-2);}

/* ===== 面包屑 ===== */
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
  padding-top:36px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--mint);}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--text-2);}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  padding:44px 0 88px;
  overflow:hidden;
  background:
    radial-gradient(120% 90% at 82% 6%,rgba(43,179,255,.18),transparent 58%),
    radial-gradient(80% 70% at 6% 92%,rgba(99,245,208,.10),transparent 62%),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat,
    var(--bg);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.72) 0%,rgba(6,10,18,.9) 62%,var(--bg) 100%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:start;margin-top:34px;}
.hero-copy h1{
  font-size:46px;
  line-height:1.22;
  letter-spacing:-.01em;
  margin:20px 0 20px;
}
.hero-copy h1 em{font-style:normal;color:var(--mint);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:600px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-pts{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;}
.hero-pt{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);flex:none;box-shadow:0 0 10px rgba(99,245,208,.7);}
.hero-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.hero-card h3{font-size:17px;margin-bottom:6px;}
.hero-card .card-note{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.mini-stat{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px dashed rgba(122,220,255,.16);}
.mini-stat:last-of-type{border-bottom:0;}
.mini-stat .k{font-size:14px;color:var(--text-2);}
.mini-stat .v{font-size:22px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.mini-stat .v small{font-size:12px;color:var(--text-3);font-weight:500;margin-left:3px;}
.hero-card .btn{width:100%;margin-top:18px;}

/* ===== 数据条 ===== */
.stats-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,18,32,.92),rgba(6,10,18,.92));
  padding:56px 0;
}
.stats-row{margin-left:-12px;margin-right:-12px;}
.stats-row > .cell{padding-left:12px;padding-right:12px;}
.stat-item{
  padding:6px 4px 6px 20px;
  border-left:1px solid rgba(122,220,255,.18);
}
.stats-row > .cell:first-child .stat-item{border-left:0;padding-left:4px;}
.stat-num{
  font-size:44px;font-weight:800;line-height:1.1;
  color:var(--amber);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num span{font-size:20px;margin-left:2px;font-weight:700;}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2);}
.stat-note{margin-top:4px;font-size:12px;color:var(--text-3);}

/* ===== 大图案例 ===== */
.case-feature{display:grid;grid-template-columns:1.08fr .92fr;gap:0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);}
.case-media{position:relative;min-height:400px;overflow:hidden;}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.case-feature:hover .case-media img{transform:scale(1.04);}
.case-media .tag-on-img{
  position:absolute;left:20px;top:20px;
}
.case-body{padding:40px;background:linear-gradient(180deg,rgba(16,26,43,.98),rgba(11,18,32,.98));}
.case-body h3{font-size:24px;margin:12px 0 14px;}
.case-body p{color:var(--text-2);font-size:15.5px;}
.case-list{margin-top:22px;display:grid;gap:12px;}
.case-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.case-list li::before{
  content:"";width:16px;height:16px;flex:none;margin-top:6px;border-radius:5px;
  background:rgba(99,245,208,.14);border:1px solid rgba(99,245,208,.5);
  background-image:linear-gradient(135deg,var(--mint) 0%,var(--mint) 100%);
  background-size:8px 8px;background-position:center;background-repeat:no-repeat;
}
.case-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.case-kpis div b{display:block;font-size:22px;color:var(--mint);font-variant-numeric:tabular-nums;}
.case-kpis div span{font-size:12.5px;color:var(--text-3);}

/* ===== 两段说明 ===== */
.explain-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.explain-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:34px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.explain-card:hover{transform:translateY(-4px);border-color:rgba(122,220,255,.3);box-shadow:var(--shadow);}
.explain-card h3{font-size:21px;margin-bottom:14px;}
.explain-card p{color:var(--text-2);font-size:15.5px;}
.flow{display:grid;gap:14px;margin-top:22px;}
.flow li{display:flex;gap:14px;align-items:flex-start;}
.flow .n{
  width:26px;height:26px;flex:none;border-radius:8px;
  border:1px solid var(--line-strong);color:var(--mint);
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
  background:rgba(99,245,208,.08);font-variant-numeric:tabular-nums;
}
.flow .t{font-size:14.5px;color:var(--text-2);}
.flow .t b{color:var(--text);font-weight:600;}

/* ===== 行业网格 ===== */
.ind-grid{margin-left:-12px;margin-right:-12px;}
.ind-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.ind-card{
  height:100%;
  background:rgba(20,32,54,.55);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.ind-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:rgba(24,38,62,.7);}
.ind-card .num{
  font-size:13px;letter-spacing:.16em;color:var(--text-3);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.ind-card h3{font-size:19px;margin-bottom:10px;}
.ind-card p{font-size:14.5px;color:var(--text-2);}
.ind-card .metric{margin-top:16px;font-size:13px;color:var(--amber);font-variant-numeric:tabular-nums;}

/* ===== 引用 ===== */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-left:3px solid var(--mint);
  border-radius:var(--r-sm);
  padding:28px 30px;
}
.quote-card p{font-size:15.5px;color:var(--text);line-height:1.9;}
.quote-from{margin-top:18px;font-size:13px;color:var(--text-3);}
.quote-from b{color:var(--text-2);font-weight:600;}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:rgba(20,32,54,.45);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item.open{border-color:var(--line-strong);background:rgba(24,38,62,.6);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  background:transparent;border:0;cursor:pointer;
  color:var(--text);font-size:16px;font-weight:600;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--mint);}
.faq-icon{
  position:relative;width:16px;height:16px;flex:none;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--mint);border-radius:2px;transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease;}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > .inner{overflow:hidden;}
.faq-a p{
  padding:16px 24px 22px;
  margin:0;
  border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}

/* ===== CTA 横条 ===== */
.cta-band{padding:0 0 96px;}
.cta-box{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:38px 44px;
  border-radius:var(--r-card);
  border:1px solid rgba(99,245,208,.28);
  background:
    radial-gradient(90% 160% at 92% 20%,rgba(43,179,255,.22),transparent 60%),
    linear-gradient(120deg,rgba(16,26,43,.96),rgba(11,18,32,.96));
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-box h2{font-size:26px;margin-bottom:8px;}
.cta-box p{margin:0;color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid transparent;
  position:relative;
  padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(122,220,255,.28),transparent);
}
.footer-cols{display:grid;grid-template-columns:1.5fr .8fr .9fr 1.1fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--text);}
.footer-brand:hover{color:var(--text);}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text);margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--text-3);}
.footer-col ul a:hover{color:var(--mint);}
.footer-contact li{font-size:13.5px;color:var(--text-3);}
.footer-contact b{color:var(--text-2);font-weight:600;}
.qr-box{
  margin-top:18px;width:104px;height:104px;border-radius:12px;
  border:1px dashed rgba(122,220,255,.3);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);text-align:center;line-height:1.5;
  background:rgba(20,32,54,.4);
}
.footer-bottom{
  margin-top:56px;padding:22px 0;
  border-top:1px solid rgba(122,220,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ===== 断点：1200 以下 ===== */
@media (max-width:1199px){
  .nav-links{gap:18px;}
  .nav-links a{font-size:14px;}
  .hero-copy h1{font-size:40px;}
  .hero-grid{grid-template-columns:1.2fr .8fr;gap:36px;}
  .stat-num{font-size:38px;}
  .case-body{padding:32px;}
}

/* ===== 断点：900–1199 平板横 ===== */
@media (max-width:1024px){
  .section{padding:76px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-actions .btn-ghost{display:none;}
  .nav-links{
    position:fixed;left:0;right:0;top:74px;bottom:0;
    display:grid;
    grid-template-columns:1fr 1fr;
    align-content:start;
    gap:8px 20px;
    padding:28px 24px 120px;
    background:rgba(6,10,18,.94);
    backdrop-filter:blur(20px) saturate(120%);
    -webkit-backdrop-filter:blur(20px) saturate(120%);
    border-top:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    overflow-y:auto;
  }
  body.nav-open .nav-links{display:grid;opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{
    font-size:16px;padding:14px 4px;color:var(--text);
    border-bottom:1px solid rgba(122,220,255,.1);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--mint);}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-copy h1{font-size:38px;}
  .page-hero{padding:32px 0 68px;}
  .case-feature{grid-template-columns:1fr;}
  .case-media{min-height:280px;}
  .explain-grid{grid-template-columns:1fr;gap:24px;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:32px;}
  .quote-grid{grid-template-columns:1fr;}
}

/* ===== 断点：640–899 平板竖 ===== */
@media (max-width:899px){
  .stats-row{margin-left:0;margin-right:0;}
  .stats-row > .cell{padding-left:0;padding-right:0;margin-bottom:22px;}
  .stat-item{border-left:0;padding-left:0;padding-bottom:16px;border-bottom:1px solid rgba(122,220,255,.12);}
  .case-kpis{grid-template-columns:1fr;gap:14px;}
  .case-kpis div{display:flex;align-items:baseline;gap:10px;}
  .case-kpis div b{font-size:20px;}
}

/* ===== 断点：<640 移动 ===== */
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .nav-wrap{height:64px;}
  .nav-links{top:64px;padding:20px 16px 120px;grid-template-columns:1fr;}
  .brand-cn{font-size:17px;}
  .brand-en{font-size:10px;letter-spacing:.24em;}
  .page-hero{padding:24px 0 56px;}
  .hero-copy h1{font-size:29px;line-height:1.32;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-pts{gap:14px;flex-direction:column;}
  .sec-head h2{font-size:23px;padding-left:14px;}
  .sec-desc{font-size:15px;}
  .stat-num{font-size:34px;}
  .case-body{padding:24px;}
  .case-body h3{font-size:20px;}
  .explain-card{padding:24px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:14px 18px 18px;}
  .cta-box{padding:24px;}
  .cta-box h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .quote-card{padding:22px;}
  .crumb{font-size:12px;padding-top:22px;}
}

/* roulang page: category4 */
:root{
  --bg:#060A12;
  --bg-2:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --primary:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-strong:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(43,179,255,.45),0 10px 30px rgba(43,179,255,.28);
  --maxw:1200px;
  --gap:24px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--mint);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}
.glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.86);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:28px;height:28px;
  border-radius:8px;
  border:1.5px solid var(--primary);
  position:relative;
  flex-shrink:0;
  box-shadow:inset 0 0 12px rgba(43,179,255,.35);
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:3px;
  border:1.5px solid var(--mint);
  opacity:.85;
}
.brand-cn{
  font-size:19px;
  font-weight:700;
  letter-spacing:.06em;
}
.brand-en{
  font-size:11px;
  letter-spacing:.32em;
  color:var(--mint);
  font-weight:600;
  text-transform:uppercase;
  padding-top:4px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .25s ease,background .25s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(43,179,255,.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--primary);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  position:relative;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .25s ease,background .25s ease,top .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{top:0;transform:translateX(-50%) rotate(45deg);}
.nav-toggle.is-open span::after{top:0;transform:translateX(-50%) rotate(-45deg);}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--mint) 100%);
  color:#04121C;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04121C;
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(43,179,255,.6),0 14px 34px rgba(43,179,255,.36);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:var(--line-strong);
  background:rgba(99,245,208,.08);
}
.btn-line{
  background:transparent;
  border-color:var(--line);
  color:var(--text-2);
}
.btn-line:hover{color:var(--mint);border-color:var(--line-strong);}
.btn-lg{height:48px;padding:0 28px;font-size:15px;}
/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  padding-top:28px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--mint);}
/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding-bottom:var(--sec);
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(43,179,255,.16),transparent 70%),
    radial-gradient(700px 380px at 6% 8%,rgba(99,245,208,.09),transparent 70%),
    linear-gradient(180deg,#060A12 0%,#08101C 60%,#060A12 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(122,220,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(122,220,255,.05) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(circle at 50% 20%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 25%,transparent 78%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:44px;
  align-items:start;
  padding-top:44px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
  border:1px solid var(--line-strong);
  background:rgba(99,245,208,.08);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:22px;
}
.eyebrow i{font-size:11px;}
.hero-copy h1{
  font-size:clamp(28px,4.2vw,50px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--text);
  margin-bottom:20px;
}
.hero-copy h1 em{
  font-style:normal;
  color:var(--mint);
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:30px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  font-size:14px;
  color:var(--text-2);
}
.hero-points li{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.hero-points i{color:var(--mint);font-size:12px;}
.hero-card{
  padding:26px;
  position:relative;
}
.hero-card-label{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-3);
  margin-bottom:14px;
}
.hero-card h2{
  font-size:19px;
  font-weight:700;
  color:var(--text);
  margin-bottom:6px;
}
.hero-card .hero-card-note{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.price-now{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:16px 0 20px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-bottom:18px;
}
.price-now .cur{font-size:15px;color:var(--amber);font-weight:600;}
.price-now .num{
  font-size:40px;
  font-weight:800;
  color:var(--amber);
  line-height:1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.price-now .unit{font-size:13px;color:var(--text-3);}
.mini-list{
  display:grid;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:22px;
}
.mini-list li{display:flex;justify-content:space-between;gap:12px;}
.mini-list b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}
.hero-card .btn{width:100%;}
/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section-alt{background:linear-gradient(180deg,#060A12 0%,#0B1220 50%,#060A12 100%);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-tag{
  display:block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-3);
  margin-bottom:12px;
}
.sec-head h2{
  position:relative;
  padding-left:18px;
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  font-weight:700;
  color:var(--text);
  margin-bottom:14px;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.16em;
  bottom:.16em;
  width:3px;
  border-radius:2px;
  background:var(--mint);
}
.sec-head p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}
/* ============ 价格列表 ============ */
.plan-list{
  display:grid;
  gap:16px;
}
.plan-row{
  display:grid;
  grid-template-columns:1.25fr 1.15fr auto;
  gap:28px;
  align-items:center;
  padding:26px 28px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.plan-row:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 22px 48px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.08);
}
.plan-row.is-featured{
  border-color:rgba(255,194,75,.42);
  box-shadow:0 22px 48px rgba(0,0,0,.5),0 0 0 1px rgba(255,194,75,.18);
}
.plan-main h3{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:21px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.plan-badge{
  font-size:11px;
  letter-spacing:.08em;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--amber);
  color:#221703;
  font-weight:700;
}
.plan-badge.soft{
  background:rgba(99,245,208,.1);
  color:var(--mint);
  border:1px solid var(--line-strong);
  font-weight:600;
}
.plan-fit{
  font-size:14px;
  color:var(--text-3);
  margin-bottom:12px;
}
.plan-benefits{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  font-size:14px;
  color:var(--text-2);
}
.plan-benefits li{display:inline-flex;align-items:center;gap:7px;}
.plan-benefits i{color:var(--mint);font-size:11px;}
.plan-price{
  text-align:right;
  min-width:160px;
}
.plan-price .num{
  display:block;
  font-size:32px;
  font-weight:800;
  color:var(--amber);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.plan-price .num small{font-size:15px;font-weight:600;margin-right:2px;}
.plan-price .unit{
  display:block;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.06em;
  margin-top:4px;
}
.plan-price .btn{margin-top:14px;height:40px;padding:0 18px;font-size:14px;}
.plan-note{
  display:flex;
  align-items:flex-start;
  gap:12px;
  margin-top:24px;
  padding:18px 22px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,194,75,.28);
  background:rgba(255,194,75,.06);
  font-size:14px;
  color:var(--text-2);
  line-height:1.85;
}
.plan-note i{color:var(--amber);margin-top:3px;}
/* ============ 图文说明 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:4/3;
  background:var(--card);
}
.split-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.split-media:hover img{transform:scale(1.04);}
.split-body h2{
  position:relative;
  padding-left:18px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
  line-height:1.35;
}
.split-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.16em;bottom:.16em;
  width:3px;border-radius:2px;
  background:var(--mint);
}
.split-body p{font-size:15px;color:var(--text-2);margin-bottom:22px;}
.tick-list{display:grid;gap:12px;}
.tick-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.tick-list i{
  color:var(--mint);
  font-size:12px;
  margin-top:9px;
  flex-shrink:0;
}
.tick-list b{color:var(--text);font-weight:600;}
/* ============ 对照清单 ============ */
.compare-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-card{
  padding:28px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-2);
}
.compare-card h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:20px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.compare-card h3 i{font-size:15px;}
.compare-card.in h3 i{color:var(--mint);}
.compare-card.out h3 i{color:var(--text-3);}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.check-list i{flex-shrink:0;margin-top:8px;font-size:12px;}
.compare-card.in .check-list i{color:var(--mint);}
.compare-card.out .check-list i{color:var(--text-3);}
.check-list b{color:var(--text);font-weight:600;}
/* ============ 流程 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.flow-step{
  position:relative;
  padding:26px 22px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--card);
  transition:transform .25s ease,border-color .25s ease;
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.flow-step .idx{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  padding:3px 10px;
  margin-bottom:16px;
}
.flow-step h3{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.8;}
/* ============ 折扣规则 ============ */
.discount-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.discount-card{
  padding:26px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:rgba(20,32,54,.55);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.discount-card .dnum{
  font-size:30px;
  font-weight:800;
  color:var(--amber);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  margin-bottom:8px;
}
.discount-card .dnum small{font-size:15px;font-weight:600;margin-left:2px;}
.discount-card h3{
  font-size:16px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.discount-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.discount-foot{
  margin-top:24px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.9;
  padding-left:16px;
  border-left:2px solid rgba(255,194,75,.5);
}
/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(16,26,43,.7);
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item.is-open{
  border-color:var(--line-strong);
  background:rgba(20,32,54,.85);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  line-height:1.6;
}
.faq-q:hover{color:var(--mint);}
.faq-q .ico{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--mint);
  font-size:12px;
  transition:transform .25s ease,background .25s ease;
}
.faq-item.is-open .faq-q .ico{
  background:rgba(99,245,208,.12);
  border-color:var(--line-strong);
  transform:rotate(180deg);
}
.faq-a{
  display:none;
  padding:0 22px 22px;
  border-top:1px solid var(--line);
  margin-top:0;
  padding-top:18px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
}
.faq-item.is-open .faq-a{display:block;}
/* ============ CTA 横条 ============ */
.cta-band{
  padding:44px 48px;
  border-radius:var(--r-lg);
  border:1px solid rgba(43,179,255,.28);
  background:
    radial-gradient(600px 220px at 88% 0%,rgba(43,179,255,.18),transparent 70%),
    linear-gradient(135deg,rgba(16,26,43,.95),rgba(11,18,32,.95));
  box-shadow:var(--shadow);
  display:grid;
  grid-template-columns:1fr auto;
  gap:32px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
  line-height:1.4;
}
.cta-band p{font-size:15px;color:var(--text-2);line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:0;
}
.site-footer::before{
  content:"";
  display:block;
  height:1px;
  margin-top:-64px;
  margin-bottom:64px;
  background:linear-gradient(90deg,transparent,rgba(99,245,208,.35),transparent);
}
.footer-cols{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  color:var(--text);
}
.footer-brand:hover{color:var(--text);}
.footer-col p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.9;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--mint);}
.footer-contact li{font-size:14px;color:var(--text-3);}
.footer-contact b{color:var(--text);font-weight:600;}
.qr-box{
  margin-top:18px;
  width:104px;height:104px;
  border-radius:var(--r-md);
  border:1px dashed var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.08em;
  background:rgba(255,255,255,.02);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  padding:22px 0 28px;
  border-top:1px solid rgba(122,220,255,.08);
  font-size:13px;
  color:var(--text-3);
}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec:80px;}
  .hero-grid{grid-template-columns:1.1fr .9fr;gap:32px;}
  .nav-links a{padding:8px 9px;font-size:14px;}
  .plan-row{grid-template-columns:1.3fr 1fr auto;gap:22px;}
  .split{gap:40px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .discount-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav-links{gap:2px;}
  .nav-links a{font-size:13.5px;padding:8px 8px;}
  .brand-en{display:none;}
}
@media (max-width:899px){
  :root{--sec:72px;}
  .nav-toggle{display:inline-block;}
  .nav-actions .btn-ghost{display:none;}
  .nav-links{
    position:fixed;
    top:76px;left:0;right:0;bottom:0;
    margin:0;
    padding:24px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    align-content:start;
    background:rgba(6,10,18,.96);
    -webkit-backdrop-filter:blur(18px) saturate(120%);
    backdrop-filter:blur(18px) saturate(120%);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    z-index:70;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{
    display:block;
    padding:16px;
    font-size:15px;
    border:1px solid var(--line);
    border-radius:var(--r-md);
    background:rgba(20,32,54,.55);
    text-align:center;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{
    border-color:var(--line-strong);
    background:rgba(99,245,208,.08);
    color:var(--mint);
  }
  .hero-grid{grid-template-columns:1fr;gap:34px;padding-top:32px;}
  .plan-row{grid-template-columns:1fr;gap:18px;}
  .plan-price{text-align:left;min-width:0;display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;}
  .plan-price .num{font-size:28px;}
  .plan-price .unit{margin-top:0;}
  .plan-price .btn{margin-top:0;}
  .split{grid-template-columns:1fr;gap:28px;}
  .compare-cols{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;gap:22px;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--sec:56px;--gap:16px;}
  .container{padding:0 16px;}
  body{font-size:15px;}
  .nav-wrap{min-height:68px;gap:12px;}
  .nav-links{top:68px;grid-template-columns:1fr;padding:18px;}
  .brand-cn{font-size:17px;}
  .brand-mark{width:24px;height:24px;}
  .nav-actions .btn-primary{height:40px;padding:0 14px;font-size:13.5px;}
  .hero-copy h1{font-size:28px;line-height:1.3;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .flow-grid{grid-template-columns:1fr;}
  .discount-grid{grid-template-columns:1fr;}
  .plan-row{padding:22px 20px;}
  .price-now .num{font-size:34px;}
  .hero-card{padding:22px;}
  .sec-head h2{font-size:23px;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a{padding:16px 18px;font-size:14px;}
}

/* roulang page: category5 */
:root{
  --bg:#060A12;
  --bg-soft:#0B1220;
  --card:#101A2B;
  --footer-bg:#050810;
  --primary:#2BB3FF;
  --mint:#63F5D0;
  --amber:#FFC24B;
  --coral:#FF6B57;
  --text:#E8F1FF;
  --text-2:#9FB0C9;
  --text-3:#6E7F97;
  --line:rgba(122,220,255,.14);
  --line-strong:rgba(99,245,208,.45);
  --glass:rgba(20,32,54,.55);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(43,179,255,.45), 0 10px 30px rgba(43,179,255,.28);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 24px)}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--mint)}
button{font-family:inherit;font-size:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4{font-weight:700;color:var(--text);margin:0;letter-spacing:.01em}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(6,10,18,.72);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.9);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--nav-h);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex:0 0 auto;
}
.brand:hover{color:var(--text)}
.brand-mark{
  position:relative;
  width:28px;
  height:28px;
  flex:0 0 28px;
  border-radius:9px;
  border:1.5px solid rgba(99,245,208,.7);
  background:linear-gradient(135deg,rgba(43,179,255,.28),rgba(99,245,208,.06));
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:4px;
  border:1.5px solid rgba(43,179,255,.85);
}
.brand-cn{font-size:17px;font-weight:700;letter-spacing:.04em}
.brand-en{font-size:11px;font-weight:600;letter-spacing:.32em;color:var(--text-3);line-height:1}
.nav-links{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:2px;
  flex:1 1 auto;
}
.nav-links > a{
  position:relative;
  padding:10px 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links > a::after{
  content:"";
  position:absolute;
  left:13px;
  right:13px;
  bottom:5px;
  height:2px;
  border-radius:2px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s ease;
}
.nav-links > a:hover{color:var(--text);background:rgba(43,179,255,.08)}
.nav-links > a:hover::after,
.nav-links > a.is-active::after{transform:scaleX(1)}
.nav-links > a.is-active{color:var(--text);background:rgba(43,179,255,.1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-drawer-cta{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease,filter .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#2BB3FF 0%,#63F5D0 100%);
  color:#04121C;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04121C;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(99,245,208,.6), 0 14px 36px rgba(43,179,255,.36);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--mint);
  border-color:var(--line-strong);
  background:rgba(43,179,255,.08);
  transform:translateY(-1px);
}
.btn:active{transform:translateY(1px)}
.btn-lg{height:48px;padding:0 28px;font-size:15px}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(99,245,208,.08);
  color:var(--mint);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.6;
}
.badge-amber{
  background:var(--amber);
  border-color:var(--amber);
  color:#22160A;
  font-weight:700;
}
.sec-label{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
  margin-bottom:10px;
}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:44px 0 72px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(120% 90% at 18% 0%,rgba(6,10,18,.5),rgba(6,10,18,.95) 72%);
}
.page-hero .container{position:relative;z-index:2}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--mint)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb [aria-current]{color:var(--text)}

.page-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(0,.95fr);
  gap:44px;
  align-items:start;
}
.page-hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.24;
  margin:16px 0 18px;
  letter-spacing:.005em;
}
.page-hero .lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:24px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:14px;
  color:var(--text-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--mint);
  display:inline-block;
}

.hero-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:26px 24px;
}
.hero-card-label{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
  margin-bottom:8px;
}
.hero-card h2{
  font-size:21px;
  line-height:1.45;
  margin-bottom:16px;
}
.tick-list{display:grid;gap:10px;margin-bottom:22px}
.tick-list li{
  position:relative;
  padding-left:24px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  width:12px;
  height:7px;
  border-left:2px solid var(--mint);
  border-bottom:2px solid var(--mint);
  transform:rotate(-45deg);
}
.hero-card-note{
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

/* ---------- 数据条 ---------- */
.stat-band{
  background:var(--bg-soft);
  border-bottom:1px solid var(--line);
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  padding:40px 0;
}
.stat-item{
  padding-left:18px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{
  font-size:34px;
  font-weight:700;
  line-height:1.2;
  color:var(--amber);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--amber);opacity:.85}
.stat-item p{
  margin:8px 0 0;
  font-size:14px;
  color:var(--text-3);
  line-height:1.6;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-soft{background:var(--bg-soft)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:3px;
  border-radius:2px;
  background:var(--mint);
}
.sec-desc{
  margin-top:14px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ---------- 答疑主体 ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.anchor-panel{
  position:sticky;
  top:calc(var(--nav-h) + 24px);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:22px 18px;
}
.anchor-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-3);
  margin:0 0 14px;
  padding-left:4px;
}
.anchor-list{display:grid;gap:4px}
.anchor-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:14.5px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-list a::after{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:currentColor;
  opacity:.45;
}
.anchor-list a:hover{background:rgba(43,179,255,.09);color:var(--text)}
.anchor-list a.is-active{
  border-color:var(--line-strong);
  background:rgba(99,245,208,.08);
  color:var(--mint);
}
.anchor-help{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.anchor-help p{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:8px;
}
.anchor-help a{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.anchor-help a::after{content:"→";transition:transform .2s ease}
.anchor-help a:hover{color:var(--mint)}
.anchor-help a:hover::after{transform:translateX(3px)}

.faq-panel{min-width:0}
.faq-group{margin-bottom:40px;scroll-margin-top:calc(var(--nav-h) + 24px)}
.faq-group:last-child{margin-bottom:0}
.group-title{
  font-size:21px;
  line-height:1.5;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:10px;
}
.group-title::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--mint);
  flex:0 0 8px;
}
.faq-list{display:grid;gap:12px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(16,26,43,.72);
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(122,220,255,.28)}
.faq-item.is-open{
  border-color:var(--line-strong);
  background:rgba(18,30,50,.9);
  box-shadow:0 14px 32px rgba(0,0,0,.42);
}
.faq-q-wrap{margin:0;font-size:16px;font-weight:600}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  width:100%;
  padding:18px 20px;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--mint)}
.faq-icon{
  position:relative;
  flex:0 0 18px;
  width:18px;
  height:18px;
  border-radius:50%;
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--mint);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:opacity .25s ease,transform .25s ease;
}
.faq-icon::before{width:9px;height:1.6px}
.faq-icon::after{width:1.6px;height:9px}
.faq-item.is-open .faq-icon{border-color:var(--line-strong)}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{
  max-height:0;
  opacity:0;
  overflow:hidden;
  padding:0 20px;
  transition:max-height .32s ease,opacity .28s ease,padding .3s ease;
}
.faq-item.is-open .faq-a{
  max-height:640px;
  opacity:1;
  padding:0 20px 18px;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.faq-a p{
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
  margin:0;
}

/* ---------- 图文说明 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.split-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  transition:transform .4s ease;
}
.split-media:hover img{transform:scale(1.04)}
.split-media figcaption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:16px 18px;
  font-size:13px;
  color:var(--text-2);
  background:linear-gradient(180deg,rgba(5,8,16,0),rgba(5,8,16,.9));
}
.step-list{display:grid;gap:16px;margin-top:24px}
.step-item{
  display:grid;
  grid-template-columns:38px minmax(0,1fr);
  gap:14px;
  align-items:start;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(16,26,43,.6);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.step-item:hover{
  border-color:var(--line-strong);
  background:rgba(20,32,54,.75);
  transform:translateY(-2px);
}
.step-num{
  width:38px;
  height:38px;
  border-radius:11px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:700;
  color:var(--amber);
  background:rgba(255,194,75,.1);
  border:1px solid rgba(255,194,75,.35);
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:16px;margin-bottom:4px}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}

/* ---------- CTA 横条 ---------- */
.cta-wrap{padding:0 0 96px}
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:36px 40px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(43,179,255,.16),rgba(99,245,208,.07) 60%,rgba(16,26,43,.9));
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-80px;
  width:260px;
  height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(43,179,255,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(21px,2.4vw,27px);
  line-height:1.4;
  margin-bottom:8px;
}
.cta-band p{
  font-size:14.5px;
  color:var(--text-2);
  margin:0;
}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding-top:64px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(99,245,208,.35),transparent);
}
.footer-cols{
  display:grid;
  grid-template-columns:1.5fr .8fr .9fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  color:var(--text);
}
.footer-brand:hover{color:var(--text)}
.footer-col p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.8;
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  letter-spacing:.08em;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul a:hover{color:var(--mint)}
.footer-contact li{
  font-size:14px;
  color:var(--text-3);
  margin-bottom:10px;
}
.footer-contact b{color:var(--text);font-weight:600}
.qr-box{
  width:104px;
  height:104px;
  margin-top:16px;
  border:1px dashed rgba(122,220,255,.24);
  border-radius:var(--r-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.04em;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links > a{font-size:14px;padding:10px 10px}
  .nav-links > a::after{left:10px;right:10px}
  .page-hero-grid{gap:32px}
  .faq-layout{grid-template-columns:240px minmax(0,1fr);gap:32px}
  .footer-cols{grid-template-columns:1.4fr .9fr 1fr;gap:32px}
  .footer-cols .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:899px){
  :root{--nav-h:68px}
  .section{padding:72px 0}
  .cta-wrap{padding-bottom:72px}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;
    left:0;
    right:0;
    top:var(--nav-h);
    bottom:0;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:6px;
    padding:24px;
    background:rgba(6,10,18,.97);
    -webkit-backdrop-filter:blur(22px) saturate(120%);
    backdrop-filter:blur(22px) saturate(120%);
    border-top:1px solid var(--line);
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .26s ease,transform .26s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links > a{
    font-size:16px;
    padding:14px 16px;
    border:1px solid var(--line);
    border-radius:var(--r-sm);
    background:rgba(255,255,255,.02);
  }
  .nav-links > a::after{display:none}
  .nav-links > a.is-active{border-color:var(--line-strong);color:var(--mint)}
  .nav-drawer-cta{display:inline-flex;margin-top:14px;height:48px;font-size:15px}
  .nav-actions .btn-ghost{display:none}
  .page-hero{padding:32px 0 56px}
  .page-hero-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;padding:32px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .anchor-panel{position:static;padding:18px 16px}
  .anchor-list{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;gap:8px}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-band{padding:30px 26px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .footer-cols .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:639px){
  :root{--nav-h:64px}
  .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .cta-wrap{padding-bottom:56px}
  .brand-en{display:none}
  .nav-actions{gap:8px}
  .nav-actions .btn-primary{height:40px;padding:0 16px;font-size:14px}
  .page-hero h1{font-size:28px;line-height:1.32;margin:14px 0 14px}
  .page-hero .lead{font-size:15px;line-height:1.85}
  .hero-card{padding:22px 18px}
  .stat-num{font-size:27px}
  .stat-item p{font-size:13px}
  .sec-title{font-size:23px}
  .anchor-list{grid-template-columns:minmax(0,1fr)}
  .faq-q{padding:16px 16px;font-size:15px}
  .faq-item.is-open .faq-a{padding:14px 16px 16px}
  .faq-a p{font-size:14.5px}
  .group-title{font-size:19px}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .btn-lg{height:48px;width:100%}
  .cta-band{padding:26px 20px}
  .cta-band .cta-actions{width:100%}
  .footer-cols{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px}
  .step-item{grid-template-columns:32px minmax(0,1fr);padding:14px}
  .step-num{width:32px;height:32px;font-size:14px}
}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  flex:0 0 44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(43,179,255,.1)}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:background .2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}