/* roulang page: index */
:root{
  --bg-0:#070A14;
  --bg-1:#0D1322;
  --bg-2:#05070F;
  --primary:#3ED3E0;
  --primary-soft:rgba(62,211,224,.10);
  --primary-line:rgba(62,211,224,.35);
  --second:#7C6CF6;
  --accent:#FFC46B;
  --text:#E9EEF9;
  --text-2:#98A4BE;
  --text-3:#66718C;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.12);
  --ok:#4ADE80;
  --warn:#F59E0B;
  --err:#F06A6A;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 20px 56px rgba(0,0,0,.45);
  --shadow-glow:0 0 16px rgba(255,196,107,.30);
  --shadow-glow-lg:0 0 28px rgba(255,196,107,.38);
  --tr:220ms cubic-bezier(.22,.61,.36,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:linear-gradient(180deg,#070A14 0%,#0D1322 52%,#070A14 100%);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  font-feature-settings:"tnum";
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color var(--tr);}
p{margin:0 0 1.15em;}
ul,ol{margin:0 0 1.15em;padding-left:1.4em;}
li{margin-bottom:.4em;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.02em;}
button,input,textarea,select{font:inherit;color:inherit;}
[hidden]{display:none !important;}
::selection{background:rgba(62,211,224,.28);color:#fff;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.link{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.link:hover{text-decoration-thickness:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);}
.link-arrow svg{transition:transform var(--tr);}
.link-arrow:hover svg{transform:translateX(4px);}

/* 顶栏 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;border-bottom:1px solid transparent;transition:background var(--tr),border-color var(--tr),backdrop-filter var(--tr);}
.site-header.is-scrolled{background:rgba(7,10,20,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:80px;transition:height var(--tr);}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);}
.brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 32% 28%,rgba(62,211,224,.38),rgba(124,108,246,.16));border:1px solid var(--primary-line);}
.brand-text strong{display:block;font-size:16px;font-weight:600;line-height:1.25;letter-spacing:.03em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;line-height:1.5;}
.primary-nav{display:flex;align-items:center;gap:28px;}
.nav-link{display:inline-block;position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color var(--tr),transform var(--tr);}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transform:scaleX(.35);transition:opacity var(--tr),transform var(--tr);}
.nav-link:hover{color:var(--text);transform:translateY(-1px);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-2);background:rgba(7,10,20,.6);cursor:pointer;padding:0;place-items:center;}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);margin:3px auto;border-radius:2px;transition:transform var(--tr),opacity var(--tr);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-sm);font-weight:600;font-size:15px;line-height:1;padding:0 22px;height:46px;border:1px solid transparent;cursor:pointer;transition:transform var(--tr),box-shadow var(--tr),background var(--tr),border-color var(--tr),color var(--tr),opacity var(--tr);white-space:nowrap;}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary{background:linear-gradient(135deg,#FFD79A,#FFC46B);color:#25190A;box-shadow:var(--shadow-glow);}
.btn-primary:hover{background:linear-gradient(135deg,#FFE2B4,#FFCE86);box-shadow:var(--shadow-glow-lg);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,196,107,.28);}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.btn-outline{background:transparent;border-color:var(--primary-line);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.24);}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.btn-lg{height:52px;font-size:16px;padding:0 28px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;cursor:not-allowed;}

/* Hero */
.hero{position:relative;padding:168px 0 88px;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;}
.hero-bg::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);background-size:130px 130px;opacity:.05;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,20,.78) 0%,rgba(7,10,20,.90) 58%,#070A14 100%);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);letter-spacing:.04em;margin:0 0 18px;}
.hero-eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent),transparent);}
.hero h1{font-size:clamp(30px,4.6vw,48px);line-height:1.25;font-weight:700;letter-spacing:.02em;margin-bottom:18px;}
.hero h1 .hl{color:var(--primary);}
.hero-sub{font-size:16px;color:var(--text-2);max-width:520px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-bar{display:flex;flex-wrap:wrap;list-style:none;margin:0;padding:0;gap:0;}
.trust-bar li{position:relative;padding:0 22px;font-size:13px;color:var(--text-3);}
.trust-bar li:first-child{padding-left:0;}
.trust-bar li+li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:22px;background:var(--line-2);}
.trust-bar strong{display:block;font-size:20px;font-weight:600;color:var(--text);letter-spacing:.02em;line-height:1.4;}
.trust-bar span{display:block;line-height:1.6;}

/* 登录卡 */
.login-card{position:relative;background:rgba(13,19,34,.74);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line-2);border-radius:var(--r-lg);padding:26px 26px 22px;box-shadow:var(--shadow-card);}
.login-card::before{content:"";position:absolute;top:0;left:16%;right:16%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);}
.login-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.login-brand{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.login-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:4px 10px;line-height:1.6;}
.login-badge i{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block;font-style:normal;box-shadow:0 0 8px rgba(74,222,128,.8);}
.login-title{font-size:19px;font-weight:600;margin-bottom:18px;}
.field{display:block;margin-bottom:14px;}
.field-label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.field input,.field textarea{width:100%;background:rgba(5,7,15,.72);border:1px solid var(--line-2);border-radius:var(--r-md);color:var(--text);transition:border-color var(--tr),box-shadow var(--tr);}
.field input{height:46px;padding:0 14px;}
.field textarea{padding:12px 14px;min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(62,211,224,.16);}
.field.has-error input,.field.has-error textarea{border-color:var(--err);}
.field-error{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.has-error .field-error{display:block;}
.login-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 18px;font-size:13px;}
.check{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);cursor:pointer;}
.check input{width:16px;height:16px;accent-color:var(--primary);cursor:pointer;}
.login-divider{position:relative;text-align:center;margin:20px 0 16px;font-size:12px;color:var(--text-3);}
.login-divider::before{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--line);}
.login-divider span{position:relative;background:rgba(13,19,34,.9);padding:0 12px;}
.login-alt{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px;}
.alt-btn{display:flex;align-items:center;justify-content:center;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13px;color:var(--text-2);transition:background var(--tr),border-color var(--tr),color var(--tr);}
.alt-btn:hover{background:rgba(255,255,255,.08);border-color:var(--line-2);color:var(--text);}
.login-foot{font-size:12px;color:var(--text-3);text-align:center;margin:0;line-height:1.7;}

/* 区块通用 */
.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.section-deep{background:var(--bg-2);position:relative;}
.section-deep::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);background-size:150px 150px;opacity:.045;}
.section-deep>*{position:relative;z-index:2;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:600;}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:15px;max-width:640px;}
.eyebrow{display:inline-block;font-size:13px;color:var(--primary);letter-spacing:.06em;margin:0 0 10px;}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.pain-card{position:relative;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;display:flex;gap:18px;transition:border-color var(--tr),transform var(--tr);}
.pain-card::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:1px;background:var(--line);}
.pain-card:hover{border-color:rgba(255,255,255,.22);transform:translateY(-2px);}
.pain-num{font-size:32px;font-weight:300;color:var(--text-3);line-height:1.1;min-width:48px;transition:color var(--tr);}
.pain-card:hover .pain-num{color:var(--primary);}
.pain-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.pain-card p{font-size:15px;color:var(--text-2);margin:0;}

/* 方案卡 */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card-glass{position:relative;background:rgba(13,19,34,.6);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line-2);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--shadow-card);transition:transform var(--tr),border-color var(--tr);display:flex;flex-direction:column;}
.card-glass::before{content:"";position:absolute;top:0;left:18%;right:18%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);}
.card-glass:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);}
.card-lg{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;gap:26px;padding:24px;align-items:stretch;}
.card-lg-body{display:flex;flex-direction:column;}
.card-md{grid-column:span 1;}
.bar-wide{grid-column:span 3;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;background:rgba(13,19,34,.55);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 26px;}
.icon-slot{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--primary-soft);border:1px solid rgba(62,211,224,.24);color:var(--primary);margin-bottom:16px;transition:background var(--tr);}
.card-glass:hover .icon-slot{background:rgba(62,211,224,.18);}
.card-badge{align-self:flex-start;font-size:12px;color:var(--accent);background:rgba(255,196,107,.12);border-radius:999px;padding:3px 10px;margin-bottom:12px;line-height:1.7;}
.card-title{font-size:19px;font-weight:600;margin-bottom:10px;}
.card-text{font-size:15px;color:var(--text-2);margin:0 0 16px;}
.card-cover{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);}
.card-cover img{width:100%;height:100%;min-height:190px;object-fit:cover;opacity:.9;}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag{font-size:12px;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:3px 10px;line-height:1.7;}
.tag-purple{color:#B9B0FF;background:rgba(124,108,246,.14);}
.tag-gold{color:var(--accent);background:rgba(255,196,107,.12);}
.card-foot{margin-top:auto;}

/* 数据区 */
.stats-head{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:end;margin-bottom:52px;}
.stats-head h2{font-size:clamp(24px,3vw,32px);line-height:1.35;}
.stats-head p{margin:0;color:var(--text-2);font-size:15px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:rgba(5,7,15,.72);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.stat-item{padding:34px 26px;border-left:1px solid var(--line);}
.stat-item:first-child{border-left:none;}
.stat-num{font-size:clamp(34px,4.2vw,52px);font-weight:600;line-height:1.1;color:var(--accent);text-shadow:0 0 22px rgba(255,196,107,.28);letter-spacing:-.01em;}
.stat-num small{font-size:20px;margin-left:2px;}
.stat-label{display:block;margin-top:10px;font-size:13px;color:var(--text-2);}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start;}
.news-feature{background:rgba(13,19,34,.6);border:1px solid var(--line-2);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--tr),border-color var(--tr);display:flex;flex-direction:column;}
.news-feature:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);}
.news-feature img{width:100%;height:220px;object-fit:cover;}
.news-feature-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-item{display:block;background:rgba(13,19,34,.5);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;transition:background var(--tr),border-color var(--tr),transform var(--tr);}
.news-item:hover{background:rgba(13,19,34,.78);border-color:rgba(255,255,255,.2);transform:translateY(-2px);}
.news-item h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item p{font-size:13px;color:var(--text-2);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .news-meta{margin-bottom:0;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--text-3);}
.news-meta .tag{font-size:12px;}
.news-title{font-size:20px;font-weight:600;margin:12px 0 10px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature:hover .news-title{color:var(--primary);}
.news-sum{font-size:14px;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature-body .card-foot{margin-top:auto;}
.empty-state{grid-column:1/-1;border:1px dashed var(--line-2);border-radius:var(--r-lg);padding:56px 24px;text-align:center;background:rgba(13,19,34,.4);}
.empty-state .empty-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-2);color:var(--primary);}
.empty-state p{color:var(--text-2);font-size:15px;margin:0 0 20px;}

/* CTA 条 */
.cta-band{position:relative;overflow:hidden;border:1px solid var(--line-2);border-radius:var(--r-lg);background:rgba(13,19,34,.66);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:var(--shadow-card);}
.cta-band::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.14;}
.cta-band>*{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.4;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--text-2);font-size:15px;max-width:600px;}
.privacy-note{display:flex;gap:10px;align-items:flex-start;font-size:12px;color:var(--text-3);line-height:1.7;margin-top:22px;}
.privacy-note svg{flex:0 0 16px;margin-top:3px;color:var(--primary);}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{position:relative;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:14px;background:rgba(13,19,34,.42);transition:border-color var(--tr),background var(--tr);overflow:hidden;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);opacity:0;transition:opacity var(--tr);}
.faq-item.is-open{border-color:rgba(62,211,224,.32);background:rgba(13,19,34,.72);}
.faq-item.is-open::before{opacity:1;}
.faq-q{width:100%;background:none;border:none;text-align:left;padding:20px 54px 20px 22px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;position:relative;line-height:1.6;}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-3px;}
.faq-q .faq-arrow{position:absolute;right:20px;top:50%;transform:translateY(-50%);transition:transform var(--tr);color:var(--text-2);}
.faq-item.is-open .faq-arrow{transform:translateY(-50%) rotate(180deg);color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.22,.61,.36,1);}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* 页脚 */
.site-footer{position:relative;background:var(--bg-2);border-top:1px solid transparent;padding-top:64px;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--primary),rgba(62,211,224,.12) 42%,transparent);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:13px;color:var(--text-2);line-height:1.8;margin-bottom:18px;max-width:300px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);transition:color var(--tr),border-color var(--tr),background var(--tr);}
.footer-social a:hover{color:var(--primary);border-color:var(--primary-line);background:var(--primary-soft);}
.footer-col h3{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:11px;}
.footer-col a,.footer-col span{font-size:13px;color:var(--text-2);}
.footer-col a{display:inline-block;transition:color var(--tr),transform var(--tr);}
.footer-col a:hover{color:var(--text);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px;}
.footer-contact svg{flex:0 0 16px;margin-top:4px;color:var(--primary);}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--text-2);}
.footer-bottom .sep{margin:0 8px;opacity:.5;}

/* 弹层 */
.modal-mask{position:fixed;inset:0;z-index:200;background:rgba(5,7,15,.78);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:24px;}
.modal{position:relative;width:100%;max-width:560px;background:rgba(13,19,34,.96);border:1px solid var(--line-2);border-radius:var(--r-lg);padding:32px 32px 28px;box-shadow:0 32px 80px rgba(0,0,0,.6);max-height:88vh;overflow-y:auto;}
.modal::before{content:"";position:absolute;top:0;left:20%;right:20%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);}
.modal h3{font-size:22px;font-weight:600;margin-bottom:10px;}
.modal-desc{font-size:14px;color:var(--text-2);margin-bottom:22px;}
.modal-close{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);font-size:18px;line-height:1;cursor:pointer;display:grid;place-items:center;transition:color var(--tr),border-color var(--tr);}
.modal-close:hover{color:var(--text);border-color:var(--line-2);}
.modal-form .field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.modal-privacy{display:flex;align-items:flex-start;gap:10px;font-size:12px;color:var(--text-3);line-height:1.7;margin:6px 0 20px;}
.modal-privacy input{margin-top:4px;width:15px;height:15px;accent-color:var(--primary);cursor:pointer;flex:0 0 15px;}
.modal-privacy a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}

/* 回到顶部 */
.to-top{position:fixed;right:24px;bottom:24px;z-index:150;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:rgba(13,19,34,.82);border:1px solid var(--line-2);backdrop-filter:blur(10px);color:var(--text-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity var(--tr),transform var(--tr),visibility var(--tr),color var(--tr);cursor:pointer;}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--primary);}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:190;background:rgba(5,7,15,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:flex;flex-direction:column;}
.mobile-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text);font-size:20px;line-height:1;cursor:pointer;}
.mobile-nav{display:flex;flex-direction:column;padding:12px 0;flex:1;overflow-y:auto;}
.mobile-nav a{display:block;padding:18px 22px;font-size:18px;color:var(--text);border-bottom:1px solid var(--line);transition:background var(--tr),color var(--tr);}
.mobile-nav a:hover,.mobile-nav a.is-active{color:var(--primary);background:rgba(62,211,224,.06);}
.mobile-drawer-foot{padding:22px;border-top:1px solid var(--line);}
.mobile-drawer-foot p{margin:14px 0 0;font-size:13px;color:var(--text-3);text-align:center;}
body.is-locked{overflow:hidden;}

@media (max-width:1024px){
  .container{padding:0 24px;}
  .primary-nav,.nav-actions{display:none;}
  .nav-toggle{display:grid;}
  .hero{padding:140px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .login-card{max-width:520px;}
  .card-lg{grid-column:span 3;grid-template-columns:1fr;}
  .solution-grid{grid-template-columns:repeat(2,1fr);}
  .card-md{grid-column:span 1;}
  .bar-wide{grid-column:span 2;}
  .pain-grid{grid-template-columns:1fr;}
  .stats-head{grid-template-columns:1fr;gap:16px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3){border-left:none;}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line);}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .solution-grid{grid-template-columns:1fr;}
  .card-lg,.card-md,.bar-wide{grid-column:span 1;}
  .cta-band{padding:28px 24px;flex-direction:column;align-items:flex-start;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal{max-width:100%;border-radius:18px 18px 0 0;max-height:92vh;padding:26px 22px 24px;}
  .modal-form .field-row{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .hero{padding:118px 0 56px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .trust-bar{gap:0;row-gap:14px;}
  .trust-bar li{padding:0 16px;}
  .trust-bar li:nth-child(3){padding-left:0;}
  .trust-bar li:nth-child(3)::before{display:none;}
  .login-alt{grid-template-columns:1fr 1fr;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-item{border-left:none !important;border-top:1px solid var(--line);}
  .stat-item:first-child{border-top:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .bar-wide{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
    --bg:#070A14;
    --bg-2:#0D1322;
    --bg-deep:#05070F;
    --primary:#3ED3E0;
    --violet:#7C6CF6;
    --gold:#FFC46B;
    --text:#E9EEF9;
    --text-2:#98A4BE;
    --text-3:#66718C;
    --line:rgba(255,255,255,.08);
    --stroke:rgba(255,255,255,.10);
    --success:#4ADE80;
    --warn:#F59E0B;
    --danger:#F06A6A;
    --r-lg:18px;
    --r-md:12px;
    --r-sm:10px;
    --shadow-card:inset 0 1px 0 rgba(255,255,255,.06), 0 20px 56px rgba(0,0,0,.45);
    --shadow-glow:0 0 16px rgba(255,196,107,.30);
    --shadow-glow-hover:0 0 28px rgba(255,196,107,.40);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:
      radial-gradient(1200px 620px at 82% -8%, rgba(124,108,246,.16), transparent 62%),
      radial-gradient(900px 520px at 6% 4%, rgba(62,211,224,.10), transparent 60%),
      linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
    background-attachment:fixed;
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.01em}
  p{margin:0 0 1.15em}
  ul,ol{margin:0 0 1.15em;padding-left:22px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px}

  /* ---------- header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    transition:background .28s var(--ease), height .28s var(--ease), border-color .28s var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.is-scrolled{
    background:rgba(7,10,20,.72);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom-color:var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;height:80px;transition:height .28s var(--ease)}
  .site-header.is-scrolled .header-inner{height:64px}
  .brand{display:inline-flex;align-items:center;gap:10px}
  .brand-mark{
    width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(140deg, rgba(62,211,224,.22), rgba(124,108,246,.20));
    border:1px solid var(--stroke);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
  .brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.06em}
  .primary-nav{display:flex;align-items:center;gap:28px}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--text-2);
    padding:6px 0;transition:color .2s var(--ease), transform .2s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--gold));
    transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
  }
  .nav-link:hover{color:var(--text);transform:translateY(-1px)}
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--primary)}
  .header-actions{display:flex;align-items:center;gap:12px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 18px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .2s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), opacity .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--gold);color:#171204;box-shadow:var(--shadow-glow)}
  .btn-primary:hover{background:#FFD28C;box-shadow:var(--shadow-glow-hover);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,196,107,.28)}
  .btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text-2)}
  .btn-ghost:hover{background:rgba(255,255,255,.06);color:var(--text);border-color:rgba(255,255,255,.20)}
  .btn-outline{background:transparent;border-color:rgba(62,211,224,.55);color:var(--primary)}
  .btn-outline:hover{background:rgba(62,211,224,.10);transform:translateY(-1px)}
  .btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
  .btn-sm{height:38px;padding:0 14px;font-size:14px}

  .text-link{color:var(--primary);text-decoration:underline;text-underline-offset:3px;font-weight:500}
  .text-link:hover{text-decoration-thickness:2px}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px}
  .arrow-link svg{transition:transform .22s var(--ease)}
  .arrow-link:hover svg{transform:translateX(4px)}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.05);border:1px solid var(--stroke);color:var(--text);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .mobile-drawer{
    position:fixed;inset:0;z-index:90;background:rgba(7,10,20,.92);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    display:flex;flex-direction:column;padding:20px;
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform .3s var(--ease), opacity .3s var(--ease);
  }
  .mobile-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
  .drawer-close{width:44px;height:44px;border-radius:var(--r-sm);background:rgba(255,255,255,.05);border:1px solid var(--stroke);color:var(--text);cursor:pointer}
  .drawer-nav{display:flex;flex-direction:column;gap:2px;flex:1}
  .drawer-nav a{
    font-size:18px;font-weight:500;color:var(--text-2);padding:16px 4px;border-bottom:1px solid var(--line);
    transition:color .2s var(--ease), padding-left .2s var(--ease);
  }
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);padding-left:8px}
  .drawer-foot{display:flex;flex-direction:column;gap:12px;padding-top:20px}
  .drawer-foot .btn{width:100%}
  .drawer-foot small{color:var(--text-3);font-size:12px;text-align:center}

  /* ---------- page shell ---------- */
  main{padding-top:96px}
  .section{padding:88px 0}
  .section-tight{padding:0 0 88px}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:32px}
  .section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:600}
  .section-head p{color:var(--text-2);font-size:14px;margin:0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;
    text-transform:uppercase;color:var(--primary);margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:var(--text-3);opacity:.6}
  .breadcrumb .now{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- article ---------- */
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 308px;gap:52px;align-items:start}
  .article-panel{
    border:1px solid var(--stroke);border-radius:var(--r-lg);
    background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
    box-shadow:var(--shadow-card);padding:38px 40px 44px;
  }
  .article-head h1{font-size:clamp(26px,3.4vw,38px);font-weight:700;letter-spacing:.02em;max-width:24ch}
  .article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--text-3)}
  .article-meta .dot{color:var(--text-3);opacity:.5}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
    background:rgba(62,211,224,.10);color:var(--primary);border:1px solid rgba(62,211,224,.22);
  }
  .badge-violet{background:rgba(124,108,246,.12);color:#B7AEFA;border-color:rgba(124,108,246,.26)}
  .badge-gold{background:rgba(255,196,107,.12);color:var(--gold);border-color:rgba(255,196,107,.26)}
  .article-hero-img{margin:28px 0 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--stroke)}
  .article-hero-img img{width:100%;height:280px;object-fit:cover;opacity:.92}

  .article-body{
    margin-top:34px;font-size:16px;line-height:1.9;color:#DCE3F2;
  }
  .article-body h2{
    font-size:clamp(20px,2.2vw,26px);font-weight:600;color:var(--text);
    margin:40px 0 14px;padding-left:12px;border-left:4px solid var(--primary);line-height:1.45;
  }
  .article-body h3{font-size:18px;font-weight:600;margin:26px 0 10px;color:var(--text)}
  .article-body p{margin:0 0 1.2em}
  .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{text-decoration-thickness:2px}
  .article-body ul,.article-body ol{padding-left:22px;margin:0 0 1.2em}
  .article-body li{margin-bottom:8px}
  .article-body li::marker{color:var(--primary)}
  .article-body blockquote{
    margin:24px 0;padding:20px 22px;border-left:3px solid var(--primary);
    border-radius:var(--r-md);
    background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
    border-top:1px solid var(--stroke);border-right:1px solid var(--stroke);border-bottom:1px solid var(--stroke);
    color:var(--text-2);font-size:15px;
  }
  .article-body img{border-radius:var(--r-md);margin:18px 0}
  .article-body figure{margin:22px 0}
  .article-body figcaption{font-size:12px;color:var(--text-3);text-align:center;margin-top:8px}
  .article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px}
  .article-body .table-wrap,.article-body table{overflow-x:auto;display:block}
  .article-body th{
    background:rgba(62,211,224,.08);color:var(--primary);font-weight:600;text-align:left;
    padding:12px 14px;border:1px solid var(--stroke);white-space:nowrap;
  }
  .article-body td{padding:12px 14px;border:1px solid var(--stroke);color:var(--text-2)}
  .article-body pre{
    background:var(--bg-deep);border:1px solid var(--stroke);border-radius:var(--r-md);
    padding:16px 18px;overflow-x:auto;font-size:13.5px;line-height:1.7;color:#C9D4E8;
  }
  .article-body code{background:rgba(255,255,255,.06);border-radius:6px;padding:2px 6px;font-size:13.5px;color:var(--primary)}
  .article-body pre code{background:none;padding:0;color:inherit}

  .empty-state{
    text-align:center;padding:56px 24px;border:1px dashed var(--stroke);border-radius:var(--r-lg);
    background:rgba(255,255,255,.02);
  }
  .empty-state .star{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;display:grid;place-items:center;background:rgba(62,211,224,.10);border:1px solid rgba(62,211,224,.24)}
  .empty-state h3{font-size:19px;font-weight:600;margin-bottom:8px}
  .empty-state p{color:var(--text-2);font-size:14px;margin-bottom:20px}

  .tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:40px;padding-top:22px;border-top:1px solid var(--line)}
  .tag-row span{font-size:13px;color:var(--text-3);margin-right:2px}
  .tag{
    display:inline-flex;height:28px;align-items:center;padding:0 12px;border-radius:999px;font-size:12.5px;
    color:var(--text-2);background:rgba(255,255,255,.045);border:1px solid var(--stroke);
    transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
  }
  .tag:hover{color:var(--primary);border-color:rgba(62,211,224,.35);background:rgba(62,211,224,.08)}

  .pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
  .pn-card{
    display:block;padding:18px 20px;border:1px solid var(--stroke);border-radius:var(--r-md);
    background:rgba(255,255,255,.03);transition:transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
  }
  .pn-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.055)}
  .pn-card small{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px}
  .pn-card strong{font-size:15px;font-weight:600;color:var(--text);display:block;line-height:1.6}
  .pn-card.next{text-align:right}

  .back-row{margin-top:26px}

  /* ---------- sidebar ---------- */
  .sidebar{position:sticky;top:104px;display:flex;flex-direction:column;gap:18px;padding-bottom:24px}
  .side-card{
    border:1px solid var(--stroke);border-radius:var(--r-lg);padding:20px 20px 18px;
    background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
    box-shadow:var(--shadow-card);
  }
  .side-card h3{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:14px}
  .toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
  .toc-list a{display:block;font-size:13.5px;color:var(--text-2);padding:7px 10px;border-radius:8px;border-left:2px solid transparent;transition:all .2s var(--ease)}
  .toc-list a:hover{color:var(--primary);background:rgba(62,211,224,.08);border-left-color:var(--primary);padding-left:14px}
  .side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
  .side-list li{padding-bottom:14px;border-bottom:1px solid var(--line)}
  .side-list li:last-child{padding-bottom:0;border-bottom:none}
  .side-list a{font-size:14px;font-weight:500;color:var(--text);line-height:1.6;display:block;transition:color .2s var(--ease)}
  .side-list a:hover{color:var(--primary)}
  .side-list time{display:block;font-size:12px;color:var(--text-3);margin-top:6px}
  .side-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:14px}
  .side-cta .btn{width:100%}

  /* ---------- related ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .glass-card{
    display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;
    background:linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
    border:1px solid var(--stroke);
    box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease), border-color .22s var(--ease);
  }
  .glass-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22)}
  .glass-card .thumb{aspect-ratio:16/9;overflow:hidden}
  .glass-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
  .glass-card:hover .thumb img{transform:scale(1.04)}
  .glass-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .glass-card h3{font-size:17px;font-weight:600;line-height:1.55}
  .glass-card p{font-size:14px;color:var(--text-2);margin:0;flex:1}

  /* ---------- proof band ---------- */
  .band{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .band-inner{padding:72px 0}
  .band-head{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:end;margin-bottom:38px}
  .band-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:600}
  .band-head p{color:var(--text-2);font-size:15px;margin:0}
  .stat-row{display:grid;grid-template-columns:repeat(4,1fr)}
  .stat{padding:8px 26px;border-left:1px solid var(--line)}
  .stat:first-child{border-left:none;padding-left:0}
  .stat b{display:block;font-size:clamp(30px,3.6vw,46px);font-weight:700;color:var(--gold);line-height:1.15;text-shadow:0 0 22px rgba(255,196,107,.28)}
  .stat b i{font-style:normal;font-size:15px;color:var(--text-2);margin-left:6px;font-weight:500}
  .stat span{display:block;font-size:13px;color:var(--text-2);margin-top:8px}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
  .faq-item{border:1px solid var(--stroke);border-radius:var(--r-md);background:rgba(255,255,255,.025);transition:background .22s var(--ease), border-color .22s var(--ease)}
  .faq-item.is-open{background:rgba(255,255,255,.055);border-color:rgba(62,211,224,.32)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
    padding:20px 22px;background:none;border:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);
  }
  .faq-q svg{flex:none;transition:transform .26s var(--ease);color:var(--primary)}
  .faq-item.is-open .faq-q svg{transform:rotate(180deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
  .faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2);border-left:3px solid transparent}
  .faq-item.is-open .faq-a-inner{border-left-color:var(--primary);padding-left:19px;margin-left:22px}
  .faq-a-inner{padding-left:0}

  /* ---------- CTA ---------- */
  .cta-card{
    display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;
    padding:36px 38px;border-radius:var(--r-lg);border:1px solid var(--stroke);
    background:linear-gradient(120deg, rgba(62,211,224,.10), rgba(124,108,246,.10) 55%, rgba(255,196,107,.08));
    box-shadow:var(--shadow-card);
  }
  .cta-card h2{font-size:clamp(21px,2.2vw,27px);font-weight:600;margin-bottom:10px}
  .cta-card p{color:var(--text-2);font-size:14.5px;margin:0;max-width:62ch}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
  .privacy-note{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:12px;line-height:1.7;color:var(--text-3)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:0;position:relative}
  .site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px}
  .footer-desc{color:var(--text-2);font-size:13.5px;margin:16px 0 18px;max-width:34ch}
  .footer-social{display:flex;gap:10px}
  .footer-social a{
    width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);
    background:rgba(255,255,255,.04);border:1px solid var(--stroke);transition:all .2s var(--ease);
  }
  .footer-social a:hover{color:var(--primary);border-color:rgba(62,211,224,.35);transform:translateY(-2px)}
  .footer-col h3{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:16px;letter-spacing:.06em}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
  .footer-col a{font-size:13px;color:var(--text-2);transition:color .2s var(--ease), transform .2s var(--ease);display:inline-block}
  .footer-col a:hover{color:var(--text);transform:translateX(2px)}
  .footer-contact li{font-size:13px;color:var(--text-2);display:flex;gap:8px;align-items:flex-start}
  .footer-contact svg{flex:none;margin-top:4px;color:var(--primary)}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-3);
  }
  .footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
  .footer-bottom a:hover{color:var(--text-2)}

  /* ---------- modal ---------- */
  .modal-mask{
    position:fixed;inset:0;z-index:100;background:rgba(3,5,12,.74);
    backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
    display:flex;align-items:center;justify-content:center;padding:24px;
    opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
  }
  .modal-mask.is-open{opacity:1;pointer-events:auto}
  .modal-card{
    width:100%;max-width:560px;max-height:88vh;overflow-y:auto;border-radius:var(--r-lg);
    border:1px solid var(--stroke);background:linear-gradient(180deg,#0C1120,#080C17);
    box-shadow:var(--shadow-card);padding:28px 30px 30px;
    transform:translateY(12px);transition:transform .26s var(--ease);
  }
  .modal-mask.is-open .modal-card{transform:translateY(0)}
  .modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
  .modal-head h2{font-size:20px;font-weight:600}
  .modal-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--stroke);background:rgba(255,255,255,.04);color:var(--text-2);cursor:pointer;flex:none}
  .modal-close:hover{color:var(--text);border-color:rgba(255,255,255,.24)}
  .modal-sub{font-size:13.5px;color:var(--text-2);margin-bottom:20px}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .field{display:flex;flex-direction:column;gap:6px}
  .field.full{grid-column:1/-1}
  .field label{font-size:13px;color:var(--text-2)}
  .field input,.field textarea{
    height:46px;padding:0 14px;border-radius:var(--r-md);background:rgba(255,255,255,.04);
    border:1px solid var(--stroke);color:var(--text);outline:none;transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
  .field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(62,211,224,.18)}
  .field.has-error input,.field.has-error textarea{border-color:var(--danger)}
  .field .err{font-size:12px;color:var(--danger);display:none}
  .field.has-error .err{display:block}
  .check-row{display:flex;gap:10px;align-items:flex-start;font-size:12px;line-height:1.7;color:var(--text-3);margin:16px 0 18px}
  .check-row input{margin-top:3px;accent-color:var(--primary);width:16px;height:16px}
  .modal-card .btn-primary{width:100%}

  .back-top{
    position:fixed;right:24px;bottom:24px;z-index:70;width:46px;height:46px;border-radius:50%;
    display:grid;place-items:center;border:1px solid var(--stroke);background:rgba(13,19,34,.8);
    backdrop-filter:blur(10px);color:var(--text-2);cursor:pointer;
    opacity:0;pointer-events:none;transition:opacity .26s var(--ease), transform .26s var(--ease), color .2s var(--ease);
  }
  .back-top.is-visible{opacity:1;pointer-events:auto}
  .back-top:hover{color:var(--primary);transform:translateY(-2px)}

  @media (max-width:1024px){
    .container{padding:0 24px}
    .article-layout{grid-template-columns:1fr;gap:32px}
    .sidebar{position:static;padding-bottom:0}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .band-inner{padding:56px 0}
    .band-head{grid-template-columns:1fr;gap:14px;align-items:start}
    .stat-row{grid-template-columns:1fr 1fr;row-gap:28px}
    .stat:nth-child(3){border-left:none;padding-left:0}
    .article-panel{padding:30px 26px 34px}
  }
  @media (max-width:768px){
    main{padding-top:84px}
    .primary-nav{display:none}
    .header-actions .btn{display:none}
    .nav-toggle{display:inline-flex}
    .section{padding:64px 0}
    .card-grid{grid-template-columns:1fr}
    .pn-grid{grid-template-columns:1fr}
    .pn-card.next{text-align:left}
    .cta-card{grid-template-columns:1fr;padding:28px 24px}
    .faq-item.is-open .faq-a-inner{margin-left:16px;padding-left:15px}
  }
  @media (max-width:520px){
    .container{padding:0 20px}
    .section{padding:48px 0}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
    .article-panel{padding:24px 18px 28px}
    .band-inner{padding:48px 0}
    .stat{padding:0 0 0 18px}
    .stat-row{grid-template-columns:1fr 1fr;gap:24px 0}
    .form-grid{grid-template-columns:1fr}
    .modal-mask{padding:0;align-items:flex-end}
    .modal-card{max-width:none;border-radius:18px 18px 0 0;max-height:92vh;padding:24px 20px 28px}
    .article-hero-img img{height:190px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category1 */
:root{
  --bg:#070A14;
  --bg-2:#0D1322;
  --bg-deep:#05070F;
  --primary:#3ED3E0;
  --primary-12:rgba(62,211,224,.12);
  --primary-08:rgba(62,211,224,.08);
  --violet:#7C6CF6;
  --gold:#FFC46B;
  --ok:#4ADE80;
  --warn:#F59E0B;
  --err:#F06A6A;
  --text:#E9EEF9;
  --text-2:#98A4BE;
  --text-3:#66718C;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.22);
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 20px 56px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  min-height:100%;
  background:linear-gradient(180deg,#070A14 0%,#0D1322 100%);
  background-attachment:fixed;
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 12% 22%,rgba(255,255,255,.9),transparent 55%),
    radial-gradient(1px 1px at 68% 42%,rgba(255,255,255,.7),transparent 55%),
    radial-gradient(1px 1px at 34% 74%,rgba(255,255,255,.8),transparent 55%),
    radial-gradient(1px 1px at 84% 86%,rgba(255,255,255,.6),transparent 55%);
  background-size:520px 520px,640px 640px,460px 460px,720px 720px;
  opacity:.06;
}

body .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}

::selection{background:rgba(62,211,224,.28);color:#fff}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,10,20,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:80px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  text-decoration:none;
}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  display:grid;
  place-items:center;
  background:linear-gradient(150deg,rgba(62,211,224,.18),rgba(124,108,246,.16));
  border:1px solid var(--line-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text strong{
  display:block;
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.25;
}
.brand-text em{
  display:block;
  font-style:normal;
  font-size:11px;
  color:var(--text-3);
  letter-spacing:.1em;
  line-height:1.4;
}

.primary-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  text-decoration:none;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--text);transform:translateY(-1px)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--gold));
}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:8px;
}

.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
  color:var(--text);
  cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.menu-toggle:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong)}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{
  background:var(--gold);
  color:#1A1104;
  box-shadow:0 0 16px rgba(255,196,107,.30);
}
.btn-primary:hover{
  background:#FFD189;
  transform:translateY(-1px);
  box-shadow:0 0 28px rgba(255,196,107,.45);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(255,196,107,.3)}
.btn-outline{
  border-color:rgba(62,211,224,.55);
  color:var(--primary);
  background:transparent;
}
.btn-outline:hover{background:var(--primary-12);border-color:var(--primary)}
.btn-ghost{
  border-color:rgba(255,255,255,.16);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.32)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn.is-loading{opacity:.7;pointer-events:none}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  text-decoration:underline;
  text-decoration-color:rgba(62,211,224,.35);
  text-underline-offset:4px;
  transition:text-decoration-color .22s var(--ease);
}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{text-decoration-color:var(--primary)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 通用排版 ============ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--primary);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}

.section{padding:96px 0}
.section-alt{
  padding:88px 0;
  background:linear-gradient(180deg,rgba(5,7,15,0) 0%,rgba(5,7,15,.9) 18%,rgba(5,7,15,.9) 82%,rgba(5,7,15,0) 100%);
}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,2.6vw,31px);
  font-weight:600;
  line-height:1.35;
  margin-top:14px;
  letter-spacing:.01em;
}
.section-desc{
  margin-top:14px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--primary);
  background:var(--primary-12);
  border:1px solid rgba(62,211,224,.22);
}
.badge-violet{
  color:#B0A6FF;
  background:rgba(124,108,246,.14);
  border-color:rgba(124,108,246,.26);
}
.badge-gold{
  color:var(--gold);
  background:rgba(255,196,107,.12);
  border-color:rgba(255,196,107,.26);
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--text-3);transition:color .22s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{color:var(--text-2)}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:64px 0 88px;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-180px;
  right:-140px;
  width:520px;
  height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(62,211,224,.14) 0%,rgba(124,108,246,.08) 42%,transparent 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,45px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:.02em;
  margin-top:16px;
}
.hero-lead{
  margin-top:18px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  max-width:34em;
}
.checklist{
  margin-top:30px;
  display:grid;
  gap:14px;
}
.checklist li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
}
.checklist .tick{
  flex:0 0 auto;
  width:22px;
  height:22px;
  border-radius:8px;
  display:grid;
  place-items:center;
  margin-top:3px;
  background:var(--primary-12);
  border:1px solid rgba(62,211,224,.28);
}
.checklist b{color:var(--text);font-weight:600}
.hero-cta{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  background:var(--bg-deep);
}
.hero-media img{
  width:100%;
  height:420px;
  object-fit:cover;
  opacity:.92;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,10,20,.15) 0%,rgba(7,10,20,.72) 100%);
}
.hero-media figcaption{
  position:absolute;
  left:22px;
  right:22px;
  bottom:20px;
  z-index:2;
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
}
.hero-media figcaption strong{
  display:block;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  margin-bottom:4px;
}

/* ============ 登录位提示条 ============ */
.entry-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.018);
}
.entry-strip .container{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.entry-cell{
  padding:28px 26px;
  border-left:1px solid var(--line);
}
.entry-cell:first-child{border-left:none}
.entry-cell .num{
  font-size:30px;
  font-weight:300;
  font-variant-numeric:tabular-nums;
  color:var(--text-3);
  line-height:1.2;
  transition:color .22s var(--ease);
}
.entry-cell:hover .num{color:var(--primary)}
.entry-cell h3{
  margin-top:8px;
  font-size:17px;
  font-weight:600;
}
.entry-cell p{
  margin-top:8px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
}

/* ============ 图文交替 ============ */
.zigzag{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.zigzag + .zigzag{margin-top:88px}
.zigzag.reverse .zigzag-media{order:2}
.zigzag-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  background:var(--bg-deep);
}
.zigzag-media img{
  width:100%;
  height:340px;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.zigzag-media:hover img{transform:scale(1.03)}
.zigzag-copy .index{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--text-3);
}
.zigzag-copy h2{
  margin-top:12px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:600;
  line-height:1.35;
}
.zigzag-copy p{
  margin-top:16px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.zigzag-copy .link-arrow{margin-top:20px}

.mini-tags{
  margin-top:20px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

/* ============ 步骤区 ============ */
.step-list{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.step-item{
  position:relative;
  padding:28px 24px 30px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.026);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.step-item::before{
  content:"";
  position:absolute;
  top:0;left:24px;right:24px;
  height:1px;
  background:linear-gradient(90deg,rgba(62,211,224,.6),transparent);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.step-item:hover{
  transform:translateY(-2px);
  border-color:rgba(255,255,255,.22);
  background:rgba(255,255,255,.05);
}
.step-item:hover::before{opacity:1}
.step-num{
  font-size:34px;
  font-weight:300;
  line-height:1.15;
  font-variant-numeric:tabular-nums;
  color:var(--text-3);
  transition:color .22s var(--ease);
}
.step-item:hover .step-num{color:var(--primary)}
.step-item h3{
  margin-top:12px;
  font-size:18px;
  font-weight:600;
  line-height:1.45;
}
.step-item p{
  margin-top:10px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
}

/* ============ 适用场景 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.scene-card{
  padding:30px 26px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-2);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.018));
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22)}
.scene-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  display:grid;
  place-items:center;
  background:var(--primary-08);
  border:1px solid rgba(62,211,224,.2);
  color:var(--primary);
  transition:background .22s var(--ease);
}
.scene-card:hover .scene-icon{background:rgba(62,211,224,.18)}
.scene-card h3{
  margin-top:18px;
  font-size:18px;
  font-weight:600;
}
.scene-card p{
  margin-top:10px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
}
.scene-card .badge{margin-top:16px}

/* ============ FAQ ============ */
.faq-list{
  display:grid;
  gap:12px;
  max-width:920px;
}
.faq-item{
  position:relative;
  border-radius:var(--r-md);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.024);
  overflow:hidden;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.faq-item:hover{border-color:rgba(255,255,255,.2)}
.faq-item[open]{
  background:rgba(255,255,255,.045);
  border-color:var(--line-strong);
}
.faq-item[open]::before{
  content:"";
  position:absolute;
  top:13px;bottom:13px;left:0;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  list-style:none;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  flex:0 0 auto;
  width:9px;
  height:9px;
  border-right:1.5px solid var(--text-2);
  border-bottom:1.5px solid var(--text-2);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{
  transform:rotate(-135deg) translateY(-2px);
  border-color:var(--primary);
}
.faq-body{
  padding:0 24px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ CTA ============ */
.cta-band{
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:36px;
  align-items:center;
  padding:44px 44px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-2);
  background:linear-gradient(140deg,rgba(62,211,224,.10),rgba(124,108,246,.09) 55%,rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{
  font-size:clamp(21px,2.2vw,26px);
  font-weight:600;
  line-height:1.4;
}
.cta-band p{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:52em;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.privacy-note{
  margin-top:18px;
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
  max-width:78em;
}
.privacy-note a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px}
.privacy-note a:hover{color:var(--primary)}

/* ============ 弹层 ============ */
.modal-overlay{
  position:fixed;
  inset:0;
  z-index:120;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(4,6,12,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal-overlay[hidden]{display:none}
.modal-panel{
  position:relative;
  width:560px;
  max-width:100%;
  max-height:88vh;
  overflow-y:auto;
  padding:32px 32px 28px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-2);
  background:linear-gradient(160deg,rgba(16,21,36,.96),rgba(9,12,22,.98));
  box-shadow:0 30px 80px rgba(0,0,0,.6);
  animation:modalIn .25s var(--ease);
}
@keyframes modalIn{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}
.modal-panel h2{
  font-size:22px;
  font-weight:600;
  line-height:1.4;
  padding-right:36px;
}
.modal-panel .modal-desc{
  margin-top:10px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.modal-close{
  position:absolute;
  top:18px;right:18px;
  width:36px;height:36px;
  display:grid;
  place-items:center;
  border-radius:10px;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.modal-close:hover{background:rgba(255,255,255,.08);color:var(--text);border-color:var(--line-strong)}

.form-grid{margin-top:24px;display:grid;gap:16px}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;
  min-height:46px;
  padding:13px 14px;
  border-radius:var(--r-md);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  line-height:1.6;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3)}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(62,211,224,.05);
  box-shadow:0 0 0 3px rgba(62,211,224,.16);
}
.field.has-error input,
.field.has-error textarea{
  border-color:var(--err);
  box-shadow:0 0 0 3px rgba(240,106,106,.14);
}
.field .err-text{
  display:none;
  margin-top:6px;
  font-size:12px;
  color:var(--err);
}
.field.has-error .err-text{display:block}

.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
}
.check-row input[type="checkbox"]{
  margin-top:3px;
  width:16px;
  height:16px;
  flex:0 0 auto;
  accent-color:#3ED3E0;
  cursor:pointer;
}
.check-row a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px}
.check-row a:hover{color:var(--primary)}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:140;
  display:flex;
  flex-direction:column;
  padding:20px;
  background:rgba(7,10,20,.97);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.mobile-drawer[hidden]{display:none}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:42px;height:42px;
  display:grid;
  place-items:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
.drawer-nav{
  margin-top:24px;
  display:flex;
  flex-direction:column;
}
.drawer-nav a{
  padding:18px 4px;
  font-size:18px;
  font-weight:500;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  transition:color .22s var(--ease),padding-left .22s var(--ease);
}
.drawer-nav a:hover,
.drawer-nav a.is-active{color:var(--primary);padding-left:8px}
.drawer-foot{
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.drawer-foot p{
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:90;
  width:46px;
  height:46px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid var(--line-2);
  background:rgba(13,19,34,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  color:var(--text-2);
  cursor:pointer;
  box-shadow:0 12px 32px rgba(0,0,0,.45);
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.to-top[hidden]{display:none}
.to-top:hover{color:var(--primary);border-color:rgba(62,211,224,.4);transform:translateY(-2px)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:88px;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(62,211,224,0) 70%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.15fr;
  gap:44px;
  padding:72px 0 48px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-desc{
  font-size:13px;
  line-height:1.85;
  color:var(--text-3);
  max-width:30em;
}
.footer-social{
  margin-top:20px;
  display:flex;
  gap:10px;
}
.footer-social a{
  width:36px;height:36px;
  display:grid;
  place-items:center;
  border-radius:10px;
  border:1px solid var(--line-2);
  color:var(--text-3);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.footer-social a:hover{
  color:var(--primary);
  border-color:rgba(62,211,224,.35);
  background:var(--primary-08);
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col li a,
.footer-col li span{
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
  transition:color .22s var(--ease),transform .22s var(--ease);
  display:inline-block;
}
.footer-col li a:hover{color:var(--text);transform:translateX(-2px)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 0 34px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
}
.footer-bottom .legal{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
}
.footer-bottom .legal a{color:var(--text-3);transition:color .22s var(--ease)}
.footer-bottom .legal a:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .primary-nav,.header-actions{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:70px;justify-content:space-between}
  .site-header.is-scrolled .header-inner{height:60px}
}

@media (max-width:1024px){
  body .container{padding:0 24px}
  .section{padding:72px 0}
  .section-alt{padding:68px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media img{height:340px}
  .entry-strip .container{grid-template-columns:repeat(2,1fr)}
  .entry-cell{border-left:none;border-top:1px solid var(--line);padding:24px 20px}
  .entry-cell:nth-child(1),
  .entry-cell:nth-child(2){border-top:none}
  .entry-cell:nth-child(even){border-left:1px solid var(--line)}
  .zigzag{grid-template-columns:1fr;gap:32px}
  .zigzag.reverse .zigzag-media{order:0}
  .zigzag + .zigzag{margin-top:64px}
  .step-list{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:36px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 36px}
}

@media (max-width:768px){
  .hero-copy h1{letter-spacing:.01em}
  .hero-media img{height:280px}
  .cta-band{padding:30px 24px}
  .step-list,.scene-grid{grid-template-columns:1fr}
  .footer-grid{padding:48px 0 30px}
}

@media (max-width:640px){
  body .container{padding:0 20px}
  .section{padding:52px 0}
  .section-alt{padding:50px 0}
  .page-hero{padding:36px 0 60px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .entry-strip .container{grid-template-columns:1fr}
  .entry-cell{border-left:none;padding:22px 20px}
  .entry-cell:nth-child(even){border-left:none}
  .entry-cell:nth-child(2){border-top:1px solid var(--line)}
  .faq-item summary{font-size:15px;padding:18px 18px}
  .faq-body{padding:0 18px 20px}
  .modal-overlay{align-items:flex-end;padding:0}
  .modal-panel{
    width:100%;
    max-height:92vh;
    border-radius:18px 18px 0 0;
    padding:26px 20px 24px;
  }
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .to-top{right:16px;bottom:16px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --bg-deep:#05070F;
  --bg-base:#070A14;
  --bg-soft:#0D1322;
  --bg-card:rgba(19,26,44,0.62);
  --primary:#3ED3E0;
  --primary-dim:rgba(62,211,224,0.12);
  --accent:#7C6CF6;
  --gold:#FFC46B;
  --text:#E9EEF9;
  --muted:#98A4BE;
  --weak:#66718C;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.10);
  --line-hover:rgba(255,255,255,0.22);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card: inset 0 1px 0 rgba(255,255,255,0.06), 0 20px 56px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 16px rgba(255,196,107,0.30);
  --shadow-glow-hover: 0 0 28px rgba(255,196,107,0.42);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --gap-section:96px;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(circle at 18% -8%, rgba(62,211,224,0.10), transparent 55%),
    radial-gradient(circle at 88% 4%, rgba(124,108,246,0.10), transparent 50%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; border-radius:var(--radius-md); }
a{ color:var(--primary); text-decoration:none; }
a:hover{ color:var(--primary); }
button{ font-family:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:600; letter-spacing:0.02em; }
p{ margin:0; }

::selection{ background:rgba(62,211,224,0.28); color:#fff; }

:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background 260ms var(--ease), border-color 260ms var(--ease), backdrop-filter 260ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,10,20,0.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:80px;
  transition:height 260ms var(--ease);
}
.site-header.is-scrolled .header-inner{ height:64px; }

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
}
.brand:hover{ color:var(--text); }
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px; height:36px;
  border-radius:12px;
  background:linear-gradient(140deg, rgba(62,211,224,0.16), rgba(124,108,246,0.16));
  border:1px solid var(--line-strong);
  flex:0 0 auto;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.2; }
.brand-text strong{ font-size:16px; font-weight:600; letter-spacing:0.04em; }
.brand-text em{ font-style:normal; font-size:11px; color:var(--weak); letter-spacing:0.08em; }

.primary-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  padding:6px 0;
  transition:color 200ms var(--ease), transform 200ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--gold));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{ color:var(--text); transform:translateY(-1px); }
.nav-link:hover::after{ transform:scaleX(1); }
.nav-link.is-active{ color:var(--primary); }
.nav-link.is-active::after{ transform:scaleX(1); }

.nav-actions{ display:flex; align-items:center; gap:12px; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease), transform 220ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--gold);
  color:#1A1206;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  background:#FFD48C;
  transform:translateY(-1px);
  box-shadow:var(--shadow-glow-hover);
  color:#1A1206;
}
.btn-primary:active{ transform:translateY(0); background:#F2B457; }
.btn-outline{
  background:transparent;
  color:var(--primary);
  border-color:rgba(62,211,224,0.45);
}
.btn-outline:hover{ background:rgba(62,211,224,0.10); color:var(--primary); transform:translateY(-1px); }
.btn-outline:active{ transform:translateY(0); background:rgba(62,211,224,0.16); }
.btn-ghost{
  background:rgba(255,255,255,0.03);
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{ border-color:var(--line-hover); background:rgba(255,255,255,0.07); transform:translateY(-1px); }
.btn-ghost:active{ transform:translateY(0); }
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:auto;
  padding:0;
  background:none;
  border:0;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
}
.btn-text svg{ transition:transform 220ms var(--ease); }
.btn-text:hover svg{ transform:translateX(4px); }
.btn[disabled], .btn.is-disabled{
  opacity:0.45;
  pointer-events:none;
  box-shadow:none;
}
.btn-sm{ height:38px; padding:0 16px; font-size:14px; }

/* ---------- 汉堡与抽屉 ---------- */
.nav-toggle{
  display:none;
  width:44px; height:44px;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle:hover{ border-color:var(--line-hover); }

.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(5,7,15,0.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;
  flex-direction:column;
  padding:24px 20px 32px;
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:opacity 240ms var(--ease), transform 240ms var(--ease), visibility 240ms var(--ease);
}
.drawer.is-open{ opacity:1; visibility:visible; transform:translateY(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:18px; }
.drawer-close{
  width:44px; height:44px;
  display:inline-flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  color:var(--text);
  cursor:pointer;
}
.drawer-nav{ display:flex; flex-direction:column; }
.drawer-nav a{
  font-size:18px;
  font-weight:500;
  color:var(--text);
  padding:16px 4px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{ color:var(--primary); }
.drawer-foot{ margin-top:auto; display:flex; flex-direction:column; gap:14px; }
.drawer-foot .drawer-note{ font-size:13px; color:var(--weak); line-height:1.7; }

/* ---------- 主内容 ---------- */
main{ padding-top:80px; }

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--weak);
  padding-top:32px;
}
.breadcrumb a{ color:var(--weak); }
.breadcrumb a:hover{ color:var(--primary); }
.breadcrumb .sep{ color:rgba(255,255,255,0.18); }
.breadcrumb .current{ color:var(--muted); }

/* Hero（窄版） */
.cat-hero{
  position:relative;
  padding:36px 0 64px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:0.5;
  pointer-events:none;
}
.cat-hero-inner{ position:relative; z-index:1; max-width:820px; }
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--primary);
  letter-spacing:0.08em;
  margin-bottom:18px;
}
.eyebrow .dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px var(--primary);
}
h1{
  font-size:clamp(30px,4.6vw,48px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:0.02em;
}
.cat-hero p.lead{
  margin-top:20px;
  font-size:16px;
  color:var(--muted);
  max-width:720px;
  line-height:1.85;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }

/* 筛选条 */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:6px 0 0;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:36px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  font-size:13px;
  color:var(--muted);
  background:rgba(255,255,255,0.03);
  border:1px solid var(--line-strong);
  cursor:pointer;
  transition:color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease), transform 200ms var(--ease);
}
.chip:hover{ color:var(--text); border-color:var(--line-hover); background:rgba(62,211,224,0.08); transform:translateY(-1px); }
.chip.is-on{ color:var(--primary); border-color:rgba(62,211,224,0.42); background:var(--primary-dim); }

/* 区块 */
.section{ padding:var(--gap-section) 0; }
.section-tight{ padding:64px 0; }
.section-head{ max-width:760px; margin-bottom:40px; }
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.35;
  margin-bottom:14px;
}
.section-head p{ color:var(--muted); font-size:15px; }
.divider{ height:1px; background:var(--line); border:0; margin:0; }

/* 卡片网格 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.glass-card{
  position:relative;
  background:var(--bg-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:26px 24px 24px;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}
.glass-card::before{
  content:"";
  position:absolute;
  top:0; left:16px; right:16px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,0.28), transparent);
}
.glass-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-hover);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08), 0 26px 60px rgba(0,0,0,0.5);
}
.glass-card h3{ font-size:19px; line-height:1.5; }
.glass-card p{ font-size:14.5px; color:var(--muted); line-height:1.8; }

.icon-badge{
  width:46px; height:46px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:rgba(62,211,224,0.10);
  border:1px solid rgba(62,211,224,0.24);
  color:var(--primary);
  transition:background 220ms var(--ease), border-color 220ms var(--ease);
}
.glass-card:hover .icon-badge{ background:rgba(62,211,224,0.18); border-color:rgba(62,211,224,0.4); }

.tag-row{ display:flex; flex-wrap:wrap; gap:8px; }
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  border-radius:var(--radius-pill);
  background:rgba(62,211,224,0.10);
  color:var(--primary);
  letter-spacing:0.02em;
}
.tag.is-dust{ background:rgba(124,108,246,0.12); color:#B3A9FF; }
.tag.is-gold{ background:rgba(255,196,107,0.12); color:#FFCE8D; }

.card-foot{ margin-top:auto; padding-top:6px; }

/* 反相数据带 */
.stat-band{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.stat-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,0.055) 1px, transparent 1px);
  background-size:28px 28px;
  pointer-events:none;
}
.stat-head{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:end;
  margin-bottom:44px;
}
.stat-head h2{ font-size:clamp(22px,2.6vw,30px); line-height:1.4; }
.stat-head p{ color:var(--muted); font-size:15px; }
.stat-grid{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.stat-item{
  padding:0 24px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{ border-left:0; padding-left:0; }
.stat-num{
  font-size:clamp(34px,4vw,52px);
  font-weight:700;
  line-height:1.1;
  color:var(--gold);
  text-shadow:0 0 22px rgba(255,196,107,0.30);
  font-variant-numeric:tabular-nums;
  letter-spacing:0.01em;
}
.stat-num span{ font-size:18px; color:var(--muted); margin-left:4px; font-weight:500; text-shadow:none; }
.stat-label{ margin-top:10px; font-size:13px; color:var(--muted); }

/* 联系入口卡 */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.contact-card{
  background:linear-gradient(150deg, rgba(19,26,44,0.72), rgba(13,19,34,0.5));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:28px 24px;
  box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease), border-color 220ms var(--ease);
}
.contact-card:hover{ transform:translateY(-2px); border-color:var(--line-hover); }
.contact-card h3{ font-size:18px; margin-bottom:10px; }
.contact-card p{ font-size:14.5px; color:var(--muted); margin-bottom:16px; }
.contact-card .meta{
  font-size:13px;
  color:var(--weak);
  border-top:1px solid var(--line);
  padding-top:14px;
}

/* CTA 横条 */
.cta-band{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  background:linear-gradient(120deg, rgba(19,26,44,0.85), rgba(13,19,34,0.6));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-inner::after{
  content:"";
  position:absolute;
  right:-60px; top:-60px;
  width:220px; height:220px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(62,211,224,0.18), transparent 70%);
  pointer-events:none;
}
.cta-inner h2{ font-size:clamp(20px,2.4vw,26px); margin-bottom:10px; }
.cta-inner p{ color:var(--muted); font-size:14.5px; max-width:620px; }
.cta-actions{ display:flex; gap:12px; flex:0 0 auto; }

/* 隐私说明 */
.privacy-note{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:12px;
  line-height:1.7;
  color:var(--weak);
  max-width:820px;
  margin-top:26px;
}
.privacy-note p{ font-size:12px; color:var(--weak); line-height:1.75; }

/* FAQ */
.faq-list{ display:flex; flex-direction:column; gap:14px; max-width:880px; }
.faq-item{
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,0.02);
  overflow:hidden;
  transition:border-color 220ms var(--ease), background 220ms var(--ease);
}
.faq-item:hover{ border-color:var(--line-hover); }
.faq-item.is-open{ background:rgba(255,255,255,0.04); border-color:rgba(62,211,224,0.32); }
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:none;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0; top:14px; bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
  opacity:0;
  transition:opacity 220ms var(--ease);
}
.faq-item.is-open .faq-q::before{ opacity:1; }
.faq-q .chev{ flex:0 0 auto; transition:transform 240ms var(--ease); color:var(--muted); }
.faq-item.is-open .faq-q .chev{ transform:rotate(180deg); color:var(--primary); }
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 280ms var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}

/* 图片区 */
.figure-band{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:40px;
  align-items:center;
}
.figure-band img{
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  box-shadow:0 24px 60px rgba(0,0,0,0.5);
}
.figure-copy h2{ font-size:clamp(22px,2.6vw,30px); margin-bottom:16px; line-height:1.4; }
.figure-copy p{ color:var(--muted); font-size:15px; margin-bottom:14px; }
.check-list{ display:flex; flex-direction:column; gap:10px; margin-top:18px; }
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--muted);
}
.check-list li svg{ flex:0 0 auto; margin-top:6px; color:var(--primary); }

/* 弹层 */
.modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
}
.modal.is-open{ display:block; }
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(5,7,15,0.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  opacity:0;
  transition:opacity 240ms var(--ease);
}
.modal.is-open .modal-mask{ opacity:1; }
.modal-panel{
  position:relative;
  width:min(560px, calc(100% - 40px));
  max-height:calc(100vh - 80px);
  overflow-y:auto;
  margin:40px auto 0;
  background:linear-gradient(160deg, rgba(19,26,44,0.96), rgba(9,13,24,0.98));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:30px 28px 26px;
  box-shadow:0 32px 80px rgba(0,0,0,0.62);
  transform:translateY(14px);
  opacity:0;
  transition:transform 260ms var(--ease), opacity 260ms var(--ease);
}
.modal.is-open .modal-panel{ transform:translateY(0); opacity:1; }
.modal-close{
  position:absolute;
  top:16px; right:16px;
  width:38px; height:38px;
  display:inline-flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  color:var(--muted);
  cursor:pointer;
  transition:color 200ms var(--ease), border-color 200ms var(--ease);
}
.modal-close:hover{ color:var(--text); border-color:var(--line-hover); }
.modal-panel h2{ font-size:22px; margin-bottom:8px; }
.modal-panel .modal-sub{ font-size:14px; color:var(--muted); margin-bottom:22px; }

.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.field{ display:flex; flex-direction:column; gap:6px; }
.field.full{ grid-column:1 / -1; }
.field label{ font-size:13px; color:var(--muted); }
.field input, .field textarea{
  width:100%;
  min-height:46px;
  padding:12px 14px;
  font-size:14.5px;
  font-family:inherit;
  color:var(--text);
  background:rgba(5,7,15,0.6);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-md);
  transition:border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.field textarea{ min-height:96px; resize:vertical; line-height:1.7; }
.field input::placeholder, .field textarea::placeholder{ color:var(--weak); }
.field input:focus, .field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(62,211,224,0.22);
}
.field.has-error input, .field.has-error textarea{ border-color:#F06A6A; }
.field .err{ font-size:12px; color:#F06A6A; min-height:16px; display:none; }
.field.has-error .err{ display:block; }

.consent{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin:18px 0 16px;
  font-size:12px;
  line-height:1.7;
  color:var(--weak);
}
.consent input{ margin-top:4px; width:16px; height:16px; accent-color:#3ED3E0; flex:0 0 auto; }
.consent a{ color:var(--muted); text-decoration:underline; text-underline-offset:3px; }
.consent a:hover{ color:var(--primary); }
.form-submit{ width:100%; }
.form-note{ margin-top:14px; font-size:12px; color:var(--weak); text-align:center; }

/* 页脚 */
.site-footer{
  background:var(--bg-deep);
  padding:72px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0; left:0; right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(62,211,224,0.55), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{ margin-bottom:16px; }
.footer-desc{ font-size:13px; color:var(--weak); line-height:1.8; max-width:300px; }
.footer-social{ display:flex; gap:10px; margin-top:18px; }
.footer-social a{
  width:36px; height:36px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--muted);
  transition:color 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease);
}
.footer-social a:hover{ color:var(--primary); border-color:rgba(62,211,224,0.4); transform:translateY(-1px); }

.footer-col h3{
  font-size:14px;
  color:var(--primary);
  margin-bottom:16px;
  font-weight:600;
  letter-spacing:0.04em;
}
.footer-col ul{ display:flex; flex-direction:column; gap:10px; }
.footer-col a{
  font-size:13px;
  color:var(--muted);
  transition:color 200ms var(--ease), transform 200ms var(--ease);
  display:inline-block;
}
.footer-col a:hover{ color:var(--text); transform:translateX(-2px); }
.footer-col .info-line{ font-size:13px; color:var(--muted); line-height:1.8; }
.footer-col .info-line strong{ color:var(--text); font-weight:500; }

.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:12px;
  color:var(--weak);
}
.footer-bottom .links{ display:flex; flex-wrap:wrap; gap:18px; }
.footer-bottom a{ font-size:12px; color:var(--weak); }
.footer-bottom a:hover{ color:var(--muted); }

/* 回到顶部 */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  width:46px; height:46px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:rgba(19,26,44,0.8);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line-strong);
  color:var(--muted);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity 260ms var(--ease), transform 260ms var(--ease), visibility 260ms var(--ease), color 200ms var(--ease);
}
.to-top.is-visible{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ color:var(--primary); border-color:rgba(62,211,224,0.4); }

/* 空态（备用） */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:56px 20px;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-lg);
  text-align:center;
  color:var(--weak);
  font-size:14px;
}
.empty-state .icon{ color:var(--primary); opacity:0.8; }

/* 响应式 */
@media (max-width:1280px){
  .container{ padding-left:28px; padding-right:28px; }
}

@media (max-width:1024px){
  :root{ --gap-section:64px; }
  .primary-nav{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .card-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .stat-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px 0; }
  .stat-item{ padding:0 20px; }
  .stat-item:nth-child(odd){ border-left:0; padding-left:0; }
  .figure-band{ grid-template-columns:1fr; gap:28px; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .contact-grid{ grid-template-columns:1fr; }
  .cta-inner{ flex-direction:column; align-items:flex-start; }
}

@media (max-width:768px){
  .container{ padding-left:24px; padding-right:24px; }
  main{ padding-top:72px; }
  .header-inner{ height:72px; }
  .site-header.is-scrolled .header-inner{ height:62px; }
  .nav-actions .btn-ghost{ display:none; }
  .cat-hero{ padding:28px 0 48px; }
  .stat-head{ grid-template-columns:1fr; gap:16px; align-items:start; }
  .cta-inner{ padding:26px 22px; }
  .modal-panel{
    width:100%;
    max-width:none;
    margin:auto 0 0;
    border-radius:18px 18px 0 0;
    max-height:88vh;
  }
  .modal{ display:none; }
  .modal.is-open{ display:flex; align-items:flex-end; }
  .form-grid{ grid-template-columns:1fr; }
}

@media (max-width:520px){
  :root{ --gap-section:48px; }
  .container{ padding-left:20px; padding-right:20px; }
  body{ font-size:15px; }
  .card-grid{ grid-template-columns:1fr; }
  .stat-grid{ grid-template-columns:1fr; }
  .stat-item{ border-left:0; border-top:1px solid var(--line); padding:20px 0 0; }
  .stat-item:first-child{ border-top:0; padding-top:0; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-actions .btn{ width:100%; }
  .to-top{ right:16px; bottom:16px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

/* roulang page: category2 */
/* ===== 设计令牌 ===== */
  :root{
    --bg-0:#070A14;
    --bg-1:#0D1322;
    --bg-2:#05070F;
    --primary:#3ED3E0;
    --primary-soft:rgba(62,211,224,.10);
    --primary-line:rgba(62,211,224,.28);
    --violet:#7C6CF6;
    --accent:#FFC46B;
    --accent-soft:rgba(255,196,107,.14);
    --text:#E9EEF9;
    --text-2:#98A4BE;
    --text-3:#66718C;
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.10);
    --line-3:rgba(255,255,255,.22);
    --success:#4ADE80;
    --warn:#F59E0B;
    --danger:#F06A6A;
    --r-lg:18px;
    --r-md:12px;
    --r-btn:10px;
    --shadow-card:0 20px 56px rgba(0,0,0,.45);
    --shadow-glow:0 0 16px rgba(255,196,107,.30);
    --shadow-glow-lg:0 0 28px rgba(255,196,107,.38);
    --ease:cubic-bezier(.22,.61,.36,1);
    --container:1200px;
  }

  /* ===== 基础 reset ===== */
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding:0;
    background:var(--bg-0);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    font-size:15px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    opacity:.055;
    background-image:
      radial-gradient(circle, #ffffff 1px, transparent 1px),
      radial-gradient(circle, #ffffff 1px, transparent 1px);
    background-size:180px 180px, 320px 320px;
    background-position:0 0, 90px 120px;
  }
  img{max-width:100%;display:block;border-radius:var(--r-md);}
  a{color:var(--primary);text-decoration:none;text-underline-offset:3px;}
  a:hover{text-decoration:underline;}
  button{font-family:inherit;font-size:inherit;cursor:pointer;}
  input,textarea,select{font-family:inherit;font-size:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

  /* ===== 容器 ===== */
  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 32px;
    position:relative;
    z-index:1;
  }

  /* ===== 区块间距 ===== */
  .section{padding:96px 0;}
  .section--tight{padding:60px 0;}
  .section--deep{background:var(--bg-2);position:relative;}
  .section--deep::before{
    content:"";
    position:absolute;inset:0;pointer-events:none;opacity:.05;
    background-image:radial-gradient(circle,#ffffff 1px,transparent 1px);
    background-size:200px 200px;
  }
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
    padding-bottom:16px;margin-bottom:36px;border-bottom:1px solid var(--line);
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;color:var(--primary);letter-spacing:.06em;margin-bottom:14px;
  }
  .eyebrow::before{
    content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent);
  }
  h1{font-size:clamp(30px,4.6vw,48px);line-height:1.25;font-weight:700;letter-spacing:.02em;}
  h2{font-size:clamp(22px,2.6vw,31px);line-height:1.35;font-weight:600;letter-spacing:.01em;}
  h3{font-size:19px;line-height:1.5;font-weight:600;}
  .lead{font-size:16px;line-height:1.8;color:var(--text-2);}
  .meta-line{font-size:13px;color:var(--text-3);}
  .divider{height:1px;background:var(--line);border:0;margin:0;}

  /* ===== 顶栏 ===== */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    transition:background .28s var(--ease),border-color .28s var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.is-scrolled{
    background:rgba(7,10,20,.72);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom-color:var(--line);
    box-shadow:0 12px 32px rgba(0,0,0,.35);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:80px;transition:height .28s var(--ease);
  }
  .site-header.is-scrolled .header-inner{height:64px;}
  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
  .brand:hover{text-decoration:none;}
  .brand-mark{
    width:36px;height:36px;flex:none;border-radius:11px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,rgba(62,211,224,.18),rgba(124,108,246,.16));
    border:1px solid var(--line-2);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text strong{font-size:15px;font-weight:700;color:var(--text);letter-spacing:.04em;}
  .brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;}

  .primary-nav{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--text-2);
    padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .nav-link:hover{color:var(--text);text-decoration:none;transform:translateY(-1px);}
  .nav-link.is-active{color:var(--primary);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
  }
  .header-actions{display:flex;align-items:center;gap:12px;}

  /* ===== 按钮 ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
    border:1px solid transparent;text-decoration:none;cursor:pointer;
    transition:transform .2s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
    white-space:nowrap;
  }
  .btn:hover{text-decoration:none;}
  .btn-primary{
    background:var(--accent);color:#0A0F1C;box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{background:#FFD08C;box-shadow:var(--shadow-glow-lg);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,196,107,.28);}
  .btn-outline{
    background:transparent;color:var(--primary);border-color:var(--primary-line);
  }
  .btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-1px);}
  .btn-ghost{
    background:transparent;color:var(--text);border-color:var(--line-2);
  }
  .btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--line-3);transform:translateY(-1px);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
  .btn-lg{height:52px;padding:0 28px;font-size:16px;}
  .btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);
    text-decoration:none;transition:gap .2s var(--ease),color .2s var(--ease);
  }
  .link-arrow:hover{text-decoration:none;gap:10px;color:#7FE4EE;}
  .link-arrow svg{transition:transform .2s var(--ease);}
  .link-arrow:hover svg{transform:translateX(2px);}

  /* ===== 徽章 / 标签 ===== */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;font-size:12px;font-weight:500;
    background:var(--primary-soft);color:var(--primary);border:1px solid rgba(62,211,224,.20);
  }
  .badge--gold{background:var(--accent-soft);color:var(--accent);border-color:rgba(255,196,107,.24);}
  .badge--violet{background:rgba(124,108,246,.14);color:#A79CF9;border-color:rgba(124,108,246,.26);}
  .tag{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    font-size:12px;color:var(--text-2);background:rgba(255,255,255,.045);
    border:1px solid var(--line);transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .tag:hover{color:var(--text);border-color:var(--line-3);}

  /* ===== Hero（窄版） ===== */
  .hero{
    position:relative;
    padding:132px 0 56px;
    background-image:linear-gradient(180deg,rgba(7,10,20,.86),rgba(7,10,20,.94)),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .hero::after{
    content:"";position:absolute;top:-60px;right:-80px;width:420px;height:420px;
    background:radial-gradient(circle,rgba(62,211,224,.16),transparent 65%);
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;max-width:820px;}
  .breadcrumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--text-3);margin-bottom:20px;
  }
  .breadcrumb a{color:var(--text-3);}
  .breadcrumb a:hover{color:var(--primary);text-decoration:none;}
  .breadcrumb .sep{color:var(--text-3);opacity:.6;}
  .breadcrumb .current{color:var(--text-2);}
  .hero h1{margin-bottom:16px;}
  .hero .lead{max-width:680px;margin-bottom:26px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

  /* ===== 速览条 ===== */
  .facts{
    display:grid;grid-template-columns:repeat(4,1fr);
    gap:0;border:1px solid var(--line);border-radius:var(--r-lg);
    background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .fact{
    padding:26px 24px;border-right:1px solid var(--line);
    position:relative;
  }
  .fact:last-child{border-right:0;}
  .fact-num{
    font-size:30px;font-weight:600;color:var(--text);font-variant-numeric:tabular-nums;
    letter-spacing:.02em;line-height:1.2;margin-bottom:6px;
  }
  .fact-num span{font-size:14px;color:var(--text-3);margin-left:4px;font-weight:400;}
  .fact-label{font-size:13px;color:var(--text-2);}
  .fact::before{
    content:"";position:absolute;left:0;top:0;width:100%;height:2px;
    background:linear-gradient(90deg,var(--primary),transparent 70%);
    opacity:.5;
  }

  /* ===== 大序号列表 ===== */
  .index-list{
    border-top:1px solid var(--line);
  }
  .index-row{
    display:grid;grid-template-columns:104px 1fr 44px;gap:28px;align-items:center;
    padding:28px 20px;border-bottom:1px solid var(--line);
    transition:background .22s var(--ease),padding .22s var(--ease);
  }
  .index-row:hover{background:rgba(255,255,255,.038);}
  .row-no{
    font-size:42px;font-weight:300;line-height:1;color:var(--text-3);
    font-variant-numeric:tabular-nums;letter-spacing:.03em;
    transition:color .22s var(--ease);
  }
  .index-row:hover .row-no{color:var(--primary);}
  .row-body h3{margin-bottom:6px;}
  .row-body p{font-size:14px;color:var(--text-2);max-width:760px;}
  .row-arrow{
    display:flex;align-items:center;justify-content:center;
    color:var(--text-3);transition:transform .22s var(--ease),color .22s var(--ease);
  }
  .index-row:hover .row-arrow{transform:translateX(6px);color:var(--primary);}

  /* ===== 图文块 ===== */
  .split{
    display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  }
  .figure-wrap{
    border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-2);
    box-shadow:var(--shadow-card);position:relative;
  }
  .figure-wrap img{width:100%;height:100%;object-fit:cover;border-radius:0;}
  .figure-wrap::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(160deg,rgba(62,211,224,.10),transparent 55%);
    pointer-events:none;
  }
  .bullet-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
  .bullet-list li{
    display:flex;gap:12px;font-size:15px;color:var(--text-2);
  }
  .bullet-list li::before{
    content:"";flex:none;width:6px;height:6px;margin-top:11px;border-radius:50%;
    background:var(--primary);box-shadow:0 0 8px rgba(62,211,224,.6);
  }

  /* ===== 对比卡 ===== */
  .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .compare-card{
    padding:32px;border-radius:var(--r-lg);
    background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.015));
    border:1px solid var(--line-2);
    box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease),border-color .22s var(--ease);
    position:relative;overflow:hidden;
  }
  .compare-card:hover{transform:translateY(-2px);border-color:var(--line-3);}
  .compare-card h3{margin:14px 0 10px;}
  .compare-card p{font-size:14px;color:var(--text-2);margin-bottom:18px;}
  .compare-card ul{display:flex;flex-direction:column;gap:10px;}
  .compare-card li{font-size:14px;color:var(--text);display:flex;gap:10px;}
  .compare-card li svg{flex:none;margin-top:5px;color:var(--primary);}
  .compare-card--accent::before{
    content:"";position:absolute;inset:0 auto auto 0;width:100%;height:2px;
    background:linear-gradient(90deg,var(--accent),transparent 75%);
  }

  /* ===== FAQ ===== */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
  .faq-item{
    border:1px solid var(--line-2);border-radius:var(--r-md);
    background:rgba(255,255,255,.015);position:relative;overflow:hidden;
    transition:background .22s var(--ease),border-color .22s var(--ease);
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
    background:linear-gradient(180deg,var(--primary),rgba(62,211,224,.2));
    transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
  }
  .faq-item.is-open{background:rgba(255,255,255,.038);border-color:var(--line-3);}
  .faq-item.is-open::before{transform:scaleY(1);}
  .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;line-height:1.6;
  }
  .faq-q:hover{color:var(--primary);}
  .faq-q .chev{flex:none;transition:transform .24s var(--ease);color:var(--text-3);}
  .faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--primary);}
  .faq-a{
    max-height:0;overflow:hidden;transition:max-height .3s var(--ease);
  }
  .faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

  /* ===== CTA 横条 ===== */
  .cta-band{
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
    padding:38px 40px;border-radius:var(--r-lg);
    background:linear-gradient(120deg,rgba(62,211,224,.10),rgba(124,108,246,.10));
    border:1px solid var(--line-2);
    box-shadow:var(--shadow-card);
  }
  .cta-band h2{margin-bottom:8px;}
  .cta-band p{font-size:14px;color:var(--text-2);}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
  .privacy-note{
    display:flex;gap:10px;align-items:flex-start;
    font-size:12px;line-height:1.7;color:var(--text-3);margin-top:22px;max-width:820px;
  }
  .privacy-note input[type="checkbox"]{
    width:16px;height:16px;margin-top:4px;flex:none;accent-color:#3ED3E0;cursor:pointer;
  }
  .privacy-note a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px;}
  .privacy-note a:hover{color:var(--primary);}

  /* ===== 弹层 ===== */
  .modal-mask{
    position:fixed;inset:0;z-index:90;
    display:flex;align-items:center;justify-content:center;
    padding:24px;
    background:rgba(3,5,12,.74);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
  }
  .modal-mask.is-open{opacity:1;visibility:visible;}
  .modal-card{
    width:100%;max-width:560px;border-radius:var(--r-lg);
    background:linear-gradient(180deg,#0E1524,#0A1020);
    border:1px solid var(--line-2);
    box-shadow:var(--shadow-card);
    padding:32px 32px 28px;position:relative;
    transform:translateY(12px) scale(.985);
    transition:transform .26s var(--ease);
    max-height:calc(100vh - 48px);overflow-y:auto;
  }
  .modal-mask.is-open .modal-card{transform:translateY(0) scale(1);}
  .modal-close{
    position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
    background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
    display:flex;align-items:center;justify-content:center;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .modal-close:hover{background:rgba(255,255,255,.1);color:var(--text);}
  .modal-card h3{font-size:22px;margin-bottom:8px;}
  .modal-card .modal-desc{font-size:14px;color:var(--text-2);margin-bottom:22px;}

  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field--full{grid-column:1 / -1;}
  .field label{font-size:13px;color:var(--text-2);}
  .field input,.field textarea{
    width:100%;padding:13px 14px;border-radius:var(--r-md);
    background:rgba(255,255,255,.03);border:1px solid var(--line-2);
    color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .field input{height:46px;}
  .field textarea{min-height:96px;resize:vertical;line-height:1.7;}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--primary);background:rgba(62,211,224,.04);
    box-shadow:0 0 0 3px rgba(62,211,224,.16);
  }
  .field.has-error input,.field.has-error textarea{
    border-color:var(--danger);box-shadow:0 0 0 3px rgba(240,106,106,.14);
  }
  .field-error{font-size:12px;color:var(--danger);display:none;}
  .field.has-error .field-error{display:block;}
  .form-footer{margin-top:22px;display:flex;flex-direction:column;gap:16px;}
  .form-status{font-size:13px;color:var(--success);display:none;}
  .form-status.is-visible{display:block;}

  /* ===== 页脚 ===== */
  .site-footer{
    position:relative;background:var(--bg-2);padding:72px 0 32px;margin-top:0;
    border-top:1px solid var(--line);
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,var(--primary),rgba(255,255,255,0) 65%);
    opacity:.55;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:44px;
  }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-desc{font-size:13px;color:var(--text-3);max-width:300px;line-height:1.75;}
  .footer-social{display:flex;gap:12px;margin-top:18px;}
  .footer-social a{
    width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-3);
    transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-social a:hover{color:var(--primary);border-color:var(--primary-line);transform:translateY(-2px);text-decoration:none;}
  .footer-col h3{font-size:14px;color:var(--primary);margin-bottom:16px;font-weight:600;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a,.footer-col li{font-size:13px;color:var(--text-2);}
  .footer-col a{transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
  .footer-col a:hover{color:var(--text);transform:translateX(2px);text-decoration:none;}
  .footer-contact li{color:var(--text-2);font-size:13px;}
  .footer-bottom{
    border-top:1px solid var(--line);padding-top:22px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12px;color:var(--text-3);
  }
  .footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
  .footer-bottom-links a{color:var(--text-3);font-size:12px;}
  .footer-bottom-links a:hover{color:var(--text);text-decoration:none;}

  /* ===== 回到顶部 ===== */
  .to-top{
    position:fixed;right:24px;bottom:24px;z-index:70;
    width:46px;height:46px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    background:rgba(13,19,34,.82);border:1px solid var(--line-2);color:var(--text-2);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    box-shadow:0 12px 30px rgba(0,0,0,.4);
    opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),color .2s var(--ease);
  }
  .to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
  .to-top:hover{color:var(--primary);border-color:var(--primary-line);}

  /* ===== 移动端抽屉 ===== */
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:10px;
    background:rgba(255,255,255,.04);border:1px solid var(--line-2);color:var(--text);
    align-items:center;justify-content:center;
  }
  .mobile-drawer{
    position:fixed;inset:0;z-index:85;
    background:rgba(7,10,20,.94);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    display:flex;flex-direction:column;
    padding:24px 24px 32px;
    transform:translateY(-100%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
  }
  .mobile-drawer.is-open{transform:translateY(0);}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.05);
    border:1px solid var(--line);color:var(--text-2);
    display:flex;align-items:center;justify-content:center;
  }
  .drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
  .drawer-nav a{
    font-size:18px;color:var(--text);padding:18px 4px;border-bottom:1px solid var(--line);
    font-weight:500;
  }
  .drawer-nav a.is-active{color:var(--primary);}
  .drawer-nav a:hover{text-decoration:none;color:var(--primary);}
  .drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:14px;}
  .drawer-foot .contact-line{font-size:13px;color:var(--text-3);}
  body.is-locked{overflow:hidden;}

  /* ===== 响应式 ===== */
  @media (max-width:1024px){
    .container{padding:0 24px;}
    .section{padding:72px 0;}
    .section--tight{padding:50px 0;}
    .facts{grid-template-columns:1fr 1fr;}
    .fact:nth-child(2){border-right:0;}
    .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line);}
    .split{grid-template-columns:1fr;gap:36px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  }
  @media (max-width:768px){
    .primary-nav{display:none;}
    .nav-toggle{display:flex;}
    .header-actions .btn-ghost{display:none;}
    .index-row{grid-template-columns:64px 1fr 32px;gap:18px;padding:24px 12px;}
    .row-no{font-size:32px;}
    .compare-grid{grid-template-columns:1fr;}
    .cta-band{padding:30px 26px;}
    .form-grid{grid-template-columns:1fr;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  }
  @media (max-width:640px){
    .container{padding:0 20px;}
    .section{padding:56px 0;}
    .section--tight{padding:42px 0;}
    .hero{padding:112px 0 44px;}
    .facts{grid-template-columns:1fr;}
    .fact{border-right:0;border-bottom:1px solid var(--line);}
    .fact:last-child{border-bottom:0;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
    .modal-mask{padding:0;align-items:flex-end;}
    .modal-card{
      max-width:100%;border-radius:18px 18px 0 0;
      padding:26px 22px calc(24px + env(safe-area-inset-bottom));
      transform:translateY(100%);
      max-height:92vh;
    }
    .modal-mask.is-open .modal-card{transform:translateY(0);}
    .to-top{right:16px;bottom:16px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
  }