/* roulang page: index */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --line:rgba(150,200,255,.14);
  --line-soft:rgba(150,200,255,.08);
  --cyan:#22E1C4;
  --cyan-deep:#16C7AC;
  --magenta:#FF4E88;
  --amber:#FFC24B;
  --text:#E6EDF7;
  --muted:#8B9AB3;
  --weak:#5D6B85;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px rgba(3,7,18,.55), 0 0 0 1px rgba(150,200,255,.07);
  --shadow-glow:0 0 0 1px rgba(34,225,196,.55), 0 8px 20px rgba(34,225,196,.20), 0 0 46px rgba(34,225,196,.16);
  --ease:cubic-bezier(.3,.8,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 78% -8%, rgba(34,225,196,.13), transparent 62%),
    radial-gradient(760px 480px at 6% 10%, rgba(255,78,136,.09), transparent 60%),
    linear-gradient(rgba(150,200,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150,200,255,.04) 1px, transparent 1px);
  background-size:auto,auto,58px 58px,58px 58px;
  background-attachment:fixed;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{list-style:none}
h1,h2,h3,h4{font-weight:800;letter-spacing:0;line-height:1.28}
h1{font-size:52px}
h2{font-size:34px}
h3{font-size:20px;font-weight:700}
p{color:var(--muted)}
strong{color:var(--text);font-weight:600}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:112px 0}
.section-sm{padding:76px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,#3BF0D6,#16C7AC);
  color:#04231F;
  box-shadow:0 0 0 1px rgba(34,225,196,.5),0 8px 20px rgba(34,225,196,.20),0 0 42px rgba(34,225,196,.16);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,225,196,.7),0 12px 30px rgba(34,225,196,.28),0 0 62px rgba(34,225,196,.24)}
.btn-ghost{background:rgba(150,200,255,.04);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(34,225,196,.5);background:rgba(34,225,196,.08)}
.btn-amber{background:linear-gradient(180deg,#FFD377,#F5AE2C);color:#2A1B02;box-shadow:0 0 0 1px rgba(255,194,75,.45),0 8px 22px rgba(255,194,75,.18)}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,194,75,.7),0 12px 30px rgba(255,194,75,.26)}
.btn:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{
  display:inline-flex;align-items:center;gap:7px;color:var(--cyan);
  font-size:14px;font-weight:600;transition:gap .2s var(--ease),color .2s var(--ease);
}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover{color:#63F2DC}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid rgba(34,225,196,.42);color:var(--cyan);background:rgba(34,225,196,.07);
}
.tag-amber{border-color:rgba(255,194,75,.45);color:var(--amber);background:rgba(255,194,75,.08)}
.tag-pink{border-color:rgba(255,78,136,.45);color:var(--magenta);background:rgba(255,78,136,.08)}
.tag-plain{border-color:var(--line);color:var(--muted);background:rgba(150,200,255,.04)}

/* ---------- 面板 / 卡片 ---------- */
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  position:relative;
  overflow:hidden;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.panel::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(190,225,255,.34),transparent);
}
.panel-hover:hover{transform:translateY(-4px);border-color:rgba(34,225,196,.36);box-shadow:var(--shadow-card)}
.glass{background:rgba(18,26,44,.62);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius)}

.sec-head{max-width:720px;margin-bottom:52px}
.sec-label{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--cyan);margin-bottom:14px;text-transform:uppercase}
.sec-head h2{margin-bottom:16px}
.sec-head p{font-size:16px;max-width:640px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.scrolled{background:rgba(6,10,18,.94);border-bottom-color:var(--line)}
.nav-inner{
  display:grid;grid-template-columns:7fr 5fr;align-items:center;gap:28px;
  height:64px;
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(34,225,196,.22),rgba(255,78,136,.18));
  border:1px solid rgba(34,225,196,.42);
  box-shadow:0 0 18px rgba(34,225,196,.24);
}
.brand-mark svg{width:18px;height:18px}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.01em;display:flex;align-items:baseline;gap:5px;white-space:nowrap}
.brand-sub{font-size:11px;font-weight:600;color:var(--cyan);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;min-width:0}
.nav-links a{
  position:relative;padding:9px 12px;border-radius:9px;font-size:14.5px;color:var(--muted);
  font-weight:500;white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(150,200,255,.06)}
.nav-links a.active{color:var(--text);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 12px rgba(34,225,196,.85);
}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:11px;background:rgba(14,21,36,.7);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 6px rgba(34,225,196,.10)}
.nav-search svg{width:15px;height:15px;flex-shrink:0;opacity:.7}
.nav-search input{width:150px;border:none;background:none;outline:none;font-size:14px}
.nav-search input::placeholder{color:var(--weak)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  place-items:center;background:rgba(14,21,36,.7);
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.24s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--text);border-radius:2px;transition:.24s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:95;
  background:rgba(10,15,27,.98);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .3s var(--ease);
  padding:86px 22px 30px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer a.drawer-link{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--muted);
  border:1px solid transparent;transition:.2s var(--ease);
}
.drawer a.drawer-link:hover{color:var(--text);background:rgba(150,200,255,.06)}
.drawer a.drawer-link.active{color:var(--text);font-weight:700;border-color:rgba(34,225,196,.4);background:rgba(34,225,196,.07)}
.drawer .btn{margin-top:12px}
.drawer-close{
  position:absolute;top:20px;right:20px;width:40px;height:40px;border-radius:11px;
  border:1px solid var(--line);display:grid;place-items:center;font-size:18px;color:var(--muted);
}
.scrim{position:fixed;inset:0;background:rgba(4,7,14,.66);z-index:90;opacity:0;visibility:hidden;transition:.28s var(--ease)}
.scrim.open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{padding:150px 0 96px;position:relative}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero-text h1{margin-bottom:20px}
.hero-text h1 .hl{
  background:linear-gradient(100deg,#22E1C4,#FF4E88);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17.5px;line-height:1.8;margin-bottom:30px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);
  padding:7px 14px;border-radius:999px;border:1px solid var(--line-soft);background:rgba(150,200,255,.03);
}
.trust-chip i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(34,225,196,.9);display:block}

.hero-visual{position:relative}
.hero-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:16/13;border:1px solid var(--line);
  box-shadow:0 26px 60px rgba(3,7,18,.6),0 0 0 1px rgba(34,225,196,.14),0 0 70px rgba(34,225,196,.14);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.62))}
.float-card{
  position:absolute;padding:14px 16px;border-radius:14px;z-index:3;
  background:rgba(18,26,44,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(34,225,196,.30);
  box-shadow:0 16px 34px rgba(3,7,18,.5);
  animation:floaty 6s ease-in-out infinite;
}
.float-card .fc-num{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--cyan);line-height:1.2}
.float-card .fc-num.pink{color:var(--magenta)}
.float-card .fc-label{font-size:12px;color:var(--muted);margin-top:2px}
.fc-1{left:-18px;top:26px}
.fc-2{right:-14px;bottom:34px;animation-delay:1.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- 信任条 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-soft);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.stat-bar div{background:var(--panel);padding:26px 24px}
.stat-bar .num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--text);line-height:1.2}
.stat-bar .num em{font-style:normal;font-size:16px;color:var(--cyan);margin-left:2px}
.stat-bar .label{font-size:13.5px;color:var(--muted);margin-top:6px}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.bento-item{padding:28px;display:flex;flex-direction:column;gap:14px;min-height:230px}
.bento-item.span-2{grid-column:span 2}
.bento-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  border:1px solid rgba(34,225,196,.32);background:rgba(34,225,196,.07);color:var(--cyan);
}
.bento-icon svg{width:22px;height:22px}
.bento-item h3{font-size:19px}
.bento-item p{font-size:15px;line-height:1.72}
.bento-item .link-more{margin-top:auto}
.bento-highlight{
  background:linear-gradient(150deg,rgba(34,225,196,.10),rgba(255,78,136,.06) 60%,transparent);
  border-color:rgba(34,225,196,.28);
}
.bento-mini{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:6px}
.bento-mini span{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:7px}
.bento-mini span::before{content:"";width:5px;height:5px;border-radius:2px;background:var(--cyan)}

/* ---------- 使用场景 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:44px 0;border-top:1px solid var(--line-soft)}
.scene-row:first-child{border-top:none}
.scene-row.reverse .scene-media{order:2}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;position:relative;background:var(--panel-2)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.scene-row:hover .scene-media img{transform:scale(1.04)}
.scene-num{font-family:var(--font-num);font-size:44px;font-weight:700;color:rgba(150,200,255,.16);line-height:1;margin-bottom:10px;display:block}
.scene-body h3{font-size:24px;margin:12px 0 14px}
.scene-body p{margin-bottom:18px;font-size:15.5px}
.scene-list{display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.scene-list li{font-size:14.5px;color:var(--muted);display:flex;gap:10px;align-items:flex-start}
.scene-list li::before{content:"";margin-top:8px;width:6px;height:6px;border-radius:2px;background:var(--cyan);flex-shrink:0}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:22px}
.case-card{padding:30px;display:flex;flex-direction:column;gap:16px}
.case-card h3{font-size:22px}
.case-metrics{display:flex;flex-wrap:wrap;gap:26px;margin-top:8px}
.case-metrics div{min-width:96px}
.case-metrics .m-num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--amber)}
.case-metrics .m-num.pink{color:var(--magenta)}
.case-metrics .m-label{font-size:13px;color:var(--muted)}
.case-photo{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9}
.case-photo img{width:100%;height:100%;object-fit:cover}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.price-card{padding:30px;display:flex;flex-direction:column;gap:18px}
.price-card .p-name{font-size:18px;font-weight:700}
.price-card .p-desc{font-size:14px;color:var(--muted);min-height:44px}
.price-amount{display:flex;align-items:baseline;gap:6px;font-family:var(--font-num)}
.price-amount .cur{font-size:18px;color:var(--muted)}
.price-amount .val{font-size:40px;font-weight:700;color:var(--text)}
.price-amount .unit{font-size:14px;color:var(--muted)}
.price-list{display:flex;flex-direction:column;gap:11px;margin:4px 0 8px}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted)}
.price-list li::before{content:"✓";color:var(--cyan);font-weight:700;flex-shrink:0}
.price-card .btn{margin-top:auto}
.price-card.is-featured{
  background:rgba(18,26,44,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-color:rgba(34,225,196,.55);box-shadow:var(--shadow-glow);transform:translateY(-8px);
}
.price-card.is-featured .badge-rec{
  position:absolute;top:22px;right:22px;font-size:12px;font-weight:700;color:#04231F;
  background:linear-gradient(180deg,#3BF0D6,#16C7AC);padding:4px 12px;border-radius:999px;
}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-card .nc-cover{aspect-ratio:16/9;overflow:hidden;background:var(--panel-2);position:relative}
.news-card .nc-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .nc-cover img{transform:scale(1.05)}
.news-card .nc-body{padding:22px;display:flex;flex-direction:column;gap:11px;flex:1}
.news-card h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .nc-sum{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-card .nc-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--weak)}
.news-card.is-feature{grid-column:span 2;flex-direction:row}
.news-card.is-feature .nc-cover{width:48%;aspect-ratio:auto;min-height:262px}
.news-card.is-feature .nc-body{width:52%;padding:28px}
.news-card.is-feature h3{font-size:21px;-webkit-line-clamp:3}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius);
  background:rgba(150,200,255,.02);
}
.news-empty .ne-icon{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;border:1px solid var(--line);color:var(--weak)}
.news-empty p{font-size:15px;color:var(--muted)}
.skeleton{height:14px;border-radius:7px;background:linear-gradient(90deg,rgba(150,200,255,.07),rgba(150,200,255,.16),rgba(150,200,255,.07));background-size:200% 100%;animation:sk 1.4s linear infinite}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease),background .24s var(--ease)}
.faq-item[open]{background:rgba(18,26,44,.66);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:rgba(34,225,196,.38);position:relative}
.faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--cyan)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16.5px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .ico{position:relative;width:15px;height:15px;flex-shrink:0}
.faq-item summary .ico::before,.faq-item summary .ico::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq-item summary .ico::before{left:0;top:6.5px;width:15px;height:2px}
.faq-item summary .ico::after{top:0;left:6.5px;width:2px;height:15px}
.faq-item[open] summary .ico::after{transform:rotate(90deg);opacity:0}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:var(--radius-lg);border:1px solid rgba(34,225,196,.28);
  background:linear-gradient(140deg,rgba(34,225,196,.12),rgba(14,21,36,.6) 45%,rgba(255,78,136,.10));
  padding:64px 56px;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;right:-110px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,225,196,.28),transparent 68%);
}
.cta-band h2{margin-bottom:16px;max-width:620px;position:relative}
.cta-band p{max-width:560px;position:relative;margin-bottom:30px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(8,12,22,.86);padding:68px 0 30px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{font-size:14px;color:var(--muted);display:flex;gap:9px;align-items:flex-start}
.footer-contact li strong{color:var(--text);font-weight:600}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--weak);
}
.footer-bottom a{color:var(--weak)}
.footer-bottom a:hover{color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  h1{font-size:46px}
  .nav-search input{width:120px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:88px 0}
  h1{font-size:40px}
  h2{font-size:29px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:grid}
  .nav-inner{grid-template-columns:1fr auto;height:64px}
  .hero{padding:126px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{aspect-ratio:16/10}
  .fc-1{left:14px;top:14px}
  .fc-2{right:14px;bottom:14px}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento-item.span-2{grid-column:span 2}
  .case-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-card.is-feature{grid-column:span 2;flex-direction:column}
  .news-card.is-feature .nc-cover,.news-card.is-feature .nc-body{width:100%}
  .news-card.is-feature .nc-cover{aspect-ratio:16/9;min-height:0}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  body{font-size:16px;background-attachment:scroll}
  .section{padding:64px 0}
  .section-sm{padding:52px 0}
  h1{font-size:33px}
  h2{font-size:25px}
  h3{font-size:18px}
  .sec-head{margin-bottom:34px}
  .hero{padding:108px 0 56px}
  .hero-actions .btn{flex:1 1 auto}
  .scene-row{grid-template-columns:1fr;gap:24px;padding:34px 0}
  .scene-row.reverse .scene-media{order:0}
  .bento{grid-template-columns:1fr}
  .bento-item.span-2{grid-column:span 1}
  .price-grid{display:flex;gap:16px;overflow-x:auto;padding:8px 4px 20px;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none}
  .price-grid::-webkit-scrollbar{display:none}
  .price-card{min-width:272px;scroll-snap-align:start}
  .price-card.is-featured{transform:none}
  .news-grid{grid-template-columns:1fr}
  .news-card.is-feature{grid-column:span 1}
  .cta-band{padding:40px 26px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{height:48px}
}
@media (max-width:560px){
  .container{padding:0 20px}
  h1{font-size:29px}
  h2{font-size:22px}
  .hero-lead{font-size:16px}
  .float-card{padding:11px 13px}
  .float-card .fc-num{font-size:18px}
  .stat-bar{grid-template-columns:1fr}
  .stat-bar div{padding:20px}
  .case-metrics{gap:18px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .panel-hover:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --primary:#22E1C4;
  --primary-dim:rgba(34,225,196,.14);
  --accent:#FF4E88;
  --amber:#FFC24B;
  --text:#E6EDF7;
  --text-2:#8B9AB3;
  --text-3:#5D6B85;
  --line:rgba(150,200,255,.14);
  --line-soft:rgba(150,200,255,.08);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --maxw:1240px;
  --gap:24px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9), 0 0 0 1px rgba(150,200,255,.10);
  --shadow-float:0 26px 60px -28px rgba(0,0,0,.95), 0 0 0 1px rgba(150,200,255,.14);
  --glow:0 0 0 1px rgba(34,225,196,.55), 0 0 8px rgba(34,225,196,.45), 0 0 32px rgba(34,225,196,.22);
  --glow-hover:0 0 0 1px rgba(34,225,196,.7), 0 0 10px rgba(34,225,196,.55), 0 0 46px rgba(34,225,196,.32);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(150,200,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(150,200,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";position:fixed;top:-240px;right:-180px;width:720px;height:720px;z-index:0;pointer-events:none;
  background:radial-gradient(circle,rgba(34,225,196,.12) 0%,rgba(34,225,196,0) 68%);
}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,button{font-size:16px}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(34,225,196,.28);color:#04120F}

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

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#04120F;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow-hover);color:#04120F;background:#3DEBCF}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(34,225,196,.55);color:var(--primary);background:rgba(34,225,196,.06)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-more svg{transition:transform .22s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ===== 标签 / 徽章 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid rgba(34,225,196,.4);color:var(--primary);background:rgba(34,225,196,.07);
}
.tag-amber{border-color:rgba(255,194,75,.42);color:var(--amber);background:rgba(255,194,75,.08)}
.tag-accent{border-color:rgba(255,78,136,.42);color:var(--accent);background:rgba(255,78,136,.08)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary);opacity:.7}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:64px;
  background:rgba(7,11,20,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,11,20,.9);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:rgba(34,225,196,.09);border:1px solid rgba(34,225,196,.28)}
.brand-mark svg{width:20px;height:20px}
.brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.02em;display:inline-flex;align-items:baseline;gap:6px}
.brand-sub{font-size:11px;font-weight:600;color:var(--text-2);letter-spacing:.14em}
.brand:hover .brand-name{color:var(--primary)}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  font-size:15px;color:var(--text-2);font-weight:500;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleX(.4);transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{opacity:.5;transform:scaleX(1)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-links a.active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(34,225,196,.6)}

.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:12px;width:16px;height:16px;pointer-events:none}
.nav-search input{
  width:196px;height:38px;padding:0 14px 0 36px;color:var(--text);
  background:rgba(14,21,36,.85);border:1px solid var(--line);border-radius:10px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),width .28s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;width:230px;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,225,196,.14)}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:rgba(14,21,36,.85);position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text);
  transform:translateX(-50%);transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}

/* ===== 页面主区 ===== */
main{padding-top:64px;position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:56px 0}

/* ===== 内页 Hero ===== */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,11,20,.82) 0%,rgba(7,11,20,.93) 62%,var(--bg) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.9;
}
.hero-split{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:88px 32px 76px}
.hero-copy{max-width:640px}
.hero-copy h1{font-size:52px;font-weight:800;margin:20px 0 18px}
.hero-copy .lead{font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-facts li{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(14,21,36,.6);
}
.hero-facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(34,225,196,.8)}

.hero-visual{position:relative}
.hero-visual .hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:0 0 60px -18px rgba(34,225,196,.35),var(--shadow-float);
}
.float-card{
  position:absolute;padding:12px 16px;border-radius:14px;
  background:rgba(18,26,44,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);box-shadow:var(--shadow-float);
}
.float-card .fc-label{font-size:12px;color:var(--text-2);display:block}
.float-card .fc-value{font-size:20px;font-weight:700;color:var(--amber);font-family:Inter,system-ui,sans-serif}
.float-a{left:-22px;bottom:56px}
.float-b{right:-18px;top:44px}
.float-b .fc-value{color:var(--primary)}

/* ===== 锚点导航 ===== */
.anchor-bar{border-bottom:1px solid var(--line-soft);background:rgba(14,21,36,.55);backdrop-filter:blur(8px)}
.anchor-inner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 32px}
.anchor-inner span{font-size:13px;color:var(--text-3);margin-right:6px}
.anchor-inner a{
  padding:7px 14px;border-radius:999px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);transition:all .22s var(--ease);
}
.anchor-inner a:hover{color:var(--primary);border-color:rgba(34,225,196,.5);background:rgba(34,225,196,.07);transform:translateY(-1px)}

/* ===== 板块标题区 ===== */
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head h2{font-size:34px;margin:16px 0 14px}
.sec-head p{color:var(--text-2);font-size:16px}
.sec-head-center{margin-left:auto;margin-right:auto;text-align:center}

/* ===== Bento 分类卡 ===== */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  position:relative;padding:26px;border-radius:var(--r-md);
  background:linear-gradient(180deg,var(--panel-2) 0%,var(--panel) 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:18px;right:18px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(200,230,255,.5),transparent);opacity:.7;
}
.card:hover{transform:translateY(-4px);border-color:rgba(34,225,196,.42);box-shadow:0 26px 52px -26px rgba(0,0,0,.95),0 0 0 1px rgba(34,225,196,.22)}
.card h3{font-size:20px;margin:18px 0 10px}
.card p{color:var(--text-2);font-size:15px;line-height:1.7}
.card .card-foot{margin-top:20px}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(34,225,196,.09);border:1px solid rgba(34,225,196,.3);
}
.card-icon svg{width:24px;height:24px}
.card-feature{grid-column:span 2;grid-row:span 2;padding:34px;display:flex;flex-direction:column}
.card-feature h3{font-size:26px;margin-top:22px}
.card-feature p{font-size:16px;max-width:520px}
.card-feature .feature-media{
  margin-top:auto;aspect-ratio:16/7;border-radius:14px;overflow:hidden;border:1px solid var(--line);
}
.card-feature .feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.feature-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ===== 图文分栏板块 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media{position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow-float)}
.split-media .media-badge{
  position:absolute;left:22px;bottom:22px;padding:10px 16px;border-radius:12px;
  background:rgba(7,11,20,.78);border:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.check-list{display:grid;gap:16px;margin-top:28px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-mark{
  flex:0 0 22px;width:22px;height:22px;margin-top:4px;border-radius:50%;
  display:grid;place-items:center;background:rgba(34,225,196,.14);border:1px solid rgba(34,225,196,.45);
}
.check-mark svg{width:12px;height:12px}
.check-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:2px}
.check-list span{color:var(--text-2);font-size:15px;line-height:1.7}

/* ===== 速查三列 ===== */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.trio-item{
  padding:24px;border-radius:var(--r-md);background:var(--panel);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.trio-item:hover{transform:translateY(-3px);border-color:rgba(255,194,75,.42)}
.trio-num{
  font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:700;
  color:var(--amber);letter-spacing:.12em;
}
.trio-item h3{font-size:18px;margin:12px 0 10px}
.trio-item p{color:var(--text-2);font-size:15px}
.trio-item .tag{margin-bottom:14px}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--panel);
  overflow:hidden;transition:border-color .24s var(--ease),background .3s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(34,225,196,.34)}
.faq-item.is-open{
  background:rgba(18,26,44,.66);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-color:rgba(34,225,196,.42);box-shadow:0 18px 44px -28px rgba(0,0,0,.95);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:600;text-align:left;cursor:pointer;position:relative;line-height:1.5;
}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--primary);box-shadow:0 0 10px rgba(34,225,196,.65)}
.faq-icon{flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);position:relative;transition:border-color .24s var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .26s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{width:11px;height:1.5px}
.faq-icon::after{width:1.5px;height:11px}
.faq-item.is-open .faq-icon{border-color:rgba(34,225,196,.6)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 24px 24px;color:var(--text-2);font-size:15.5px;max-width:760px}

/* ===== 尾屏 CTA ===== */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:72px 56px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--panel-2) 0%,var(--panel) 100%),var(--panel);
  box-shadow:var(--shadow-float);
}
.cta-panel::before{
  content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);
  width:560px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,225,196,.22) 0%,rgba(34,225,196,0) 70%);
}
.cta-panel > *{position:relative}
.cta-panel h2{font-size:34px;margin:16px 0 14px;max-width:640px}
.cta-panel p{color:var(--text-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.cta-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line-soft)}
.cta-meta div span{display:block;font-size:12px;color:var(--text-3)}
.cta-meta div strong{font-family:Inter,system-ui,sans-serif;font-size:22px;font-weight:700;color:var(--amber)}

/* ===== 面包屑 ===== */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:26px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb i{width:14px;height:1px;background:var(--text-3);display:inline-block;font-style:normal}

/* ===== 页脚 ===== */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:rgba(11,17,30,.85);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px;padding:68px 0 52px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:18px;max-width:340px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{color:var(--text-2);font-size:14.5px;line-height:1.7}
.footer-contact strong{color:var(--text-3);font-weight:500}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}

/* ===== 响应式 ===== */
@media (max-width:1280px){
  .hero-copy h1{font-size:44px}
  .nav-search input{width:160px}
  .nav-left{gap:22px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .hero-split{grid-template-columns:1fr;gap:40px;padding:64px 24px 60px}
  .hero-copy h1{font-size:38px}
  .hero-visual{max-width:640px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .card-feature{grid-column:span 2;grid-row:auto}
  .split{grid-template-columns:1fr;gap:36px}
  .split.reverse .split-media{order:2}
  .trio{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:64px;right:0;width:280px;height:calc(100vh - 64px);
    flex-direction:column;align-items:stretch;gap:0;padding:18px;
    background:rgba(9,14,24,.97);backdrop-filter:blur(16px);
    border-left:1px solid var(--line);transform:translateX(102%);
    transition:transform .3s var(--ease);overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{height:52px;padding:0 14px;border-radius:10px;font-size:15.5px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:rgba(34,225,196,.09)}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:64px 0}
  .sec-head h2,.cta-panel h2{font-size:26px}
  .hero-copy h1{font-size:30px}
  .hero-split{padding:48px 20px 44px}
  .hero-visual .hero-img{aspect-ratio:16/10}
  .float-a{left:8px;bottom:12px}
  .float-b{right:8px;top:-14px}
  .bento{grid-template-columns:1fr;gap:18px}
  .card-feature{grid-column:span 1}
  .cta-panel{padding:44px 24px}
  .faq-q{padding:18px;font-size:16px}
  .faq-a p{padding:0 18px 20px}
  .anchor-inner{padding:12px 20px}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand-sub{display:none}
  .hero-copy h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .btn{padding:12px 20px}
  .card{padding:20px}
  .card-feature{padding:22px}
  .footer-bottom{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .card:hover,.btn:hover,.trio-item:hover{transform:none !important}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --panel-3:#161F33;
  --line:rgba(150,200,255,.14);
  --line-strong:rgba(150,200,255,.26);
  --text:#E6EDF7;
  --text-2:#8B9AB3;
  --text-3:#5D6B85;
  --primary:#22E1C4;
  --primary-soft:rgba(34,225,196,.10);
  --primary-line:rgba(34,225,196,.42);
  --accent:#FF4E88;
  --amber:#FFC24B;
  --radius-xl:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 22px 48px -30px rgba(0,0,0,.9);
  --shadow-soft:0 12px 30px -22px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(34,225,196,.45),0 10px 26px -12px rgba(34,225,196,.55),0 34px 70px -36px rgba(34,225,196,.5);
  --header-h:64px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.32;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
main{padding-top:var(--header-h)}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(7,11,20,.94);border-bottom-color:var(--line)}
.nav-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;background:var(--primary-soft);border:1px solid var(--primary-line)}
.brand-mark svg{width:20px;height:20px}
.brand-name{font-size:18px;font-weight:800;color:var(--text);letter-spacing:0}
.brand-sub{font-size:11px;font-weight:600;color:var(--primary);margin-left:6px;padding:2px 7px;border:1px solid var(--primary-line);border-radius:999px;vertical-align:2px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{position:relative;font-size:14.5px;color:var(--text-2);white-space:nowrap;transition:color .2s ease}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-21px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(34,225,196,.8)
}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:rgba(150,200,255,.05);border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .2s ease,box-shadow .2s ease
}
.nav-search svg{width:16px;height:16px;flex-shrink:0}
.nav-search input{width:150px;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 4px rgba(34,225,196,.14)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:transparent;cursor:pointer;position:relative;z-index:70
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--text);border-radius:2px;transform:translate(-50%,-50%);transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,top .25s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.site-header.menu-open .nav-toggle span{background:transparent}
.site-header.menu-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.site-header.menu-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .28s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-primary{
  background:var(--primary);color:#04120F;
  box-shadow:0 0 0 1px rgba(34,225,196,.5),0 8px 22px -12px rgba(34,225,196,.85),0 28px 54px -30px rgba(34,225,196,.7)
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 0 0 1px rgba(34,225,196,.6),0 12px 30px -12px rgba(34,225,196,.95),0 40px 74px -34px rgba(34,225,196,.75)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary-line);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14.5px;font-weight:600;
  background:none;border:0;padding:0;cursor:pointer
}
.btn-link svg{width:16px;height:16px;transition:transform .2s ease}
.btn-link:hover svg{transform:translateX(4px)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 文章头部 ============ */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(150,200,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(150,200,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  pointer-events:none
}
.article-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.20;
  pointer-events:none
}
.article-hero-glow{
  position:absolute;width:640px;height:640px;right:-160px;top:-280px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,225,196,.22),transparent 66%);
  filter:blur(10px);pointer-events:none
}
.article-head{position:relative;padding:56px 0 48px;max-width:900px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3);transition:color .2s ease}
.crumb a:hover{color:var(--primary)}
.crumb .sep{width:14px;height:1px;background:var(--line-strong);display:inline-block}
.crumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-kicker{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 13px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-soft);border:1px solid var(--primary-line);
  margin-bottom:20px
}
.article-kicker i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block;box-shadow:0 0 8px rgba(34,225,196,.9)}
.article-title{font-size:42px;line-height:1.28;font-weight:800;color:#F2F7FF}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px;font-size:14px;color:var(--text-2)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3)}
.article-meta .chip{
  padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(150,200,255,.05);
  font-size:13px;color:var(--text-2)
}

/* ============ 文章主体布局 ============ */
.article-main{padding:64px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.article-panel{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:44px 46px 40px;box-shadow:var(--shadow-card);overflow:hidden
}
.article-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(150,200,255,.35),transparent)
}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#D3DEED}
.article-body > * + *{margin-top:1.4em}
.article-body h2{
  position:relative;font-size:26px;line-height:1.42;color:#EFF5FF;
  margin-top:2.1em;padding-left:16px;scroll-margin-top:96px
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(34,225,196,.15))
}
.article-body h3{font-size:19px;color:#E6EDF7;margin-top:1.7em;scroll-margin-top:96px}
.article-body h4{font-size:17px;color:#DCE6F5;margin-top:1.4em}
.article-body p{margin:0}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(34,225,196,.35);transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:#FFFFFF;font-weight:700}
.article-body ul,.article-body ol{padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-top:.6em;color:#C9D5E6}
.article-body li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary)
}
.article-body ol{counter-reset:ol}
.article-body ol li{counter-increment:ol;padding-left:30px}
.article-body ol li::before{
  content:counter(ol);left:0;top:.15em;width:20px;height:20px;border-radius:6px;
  background:var(--primary-soft);border:1px solid var(--primary-line);
  color:var(--primary);font-size:12px;font-weight:700;text-align:center;line-height:18px
}
.article-body blockquote{
  margin:1.7em 0;padding:18px 24px;border-left:2px solid var(--primary);
  background:rgba(34,225,196,.06);border-radius:0 14px 14px 0;color:#DCE6F5
}
.article-body img{border-radius:12px;width:100%;height:auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);margin-top:10px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.7em 0;border-radius:12px;overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:rgba(150,200,255,.06);color:#EAF1FB;font-weight:600}
.article-body td{color:#C9D5E6}
.article-body code{background:rgba(150,200,255,.1);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--amber)}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line);max-width:760px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  font-size:13px;color:var(--primary);background:transparent;border:1px solid var(--primary-line);
  transition:background .2s ease,color .2s ease,transform .18s ease
}
.tag:hover{background:var(--primary-soft);transform:translateY(-1px)}
.tag.tag-amber{color:var(--amber);border-color:rgba(255,194,75,.42)}
.tag.tag-amber:hover{background:rgba(255,194,75,.1)}
.article-back{margin-top:30px;max-width:760px}

/* ============ 空态 ============ */
.article-empty{
  max-width:640px;padding:30px 0 10px;text-align:left
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid var(--primary-line);margin-bottom:22px
}
.empty-icon svg{width:26px;height:26px}
.article-empty h2{font-size:24px;color:#EFF5FF;margin-bottom:12px}
.article-empty p{color:var(--text-2);font-size:15.5px;margin-bottom:26px;max-width:520px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:88px;display:grid;gap:20px}
.side-card{
  position:relative;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-soft)
}
.side-title{
  font-size:14px;font-weight:700;color:var(--text);letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;margin-bottom:16px
}
.side-title i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block;box-shadow:0 0 8px rgba(34,225,196,.9)}
.toc-list{display:grid;gap:2px}
.toc-list a{
  display:block;padding:8px 10px;font-size:14px;color:var(--text-2);border-radius:8px;
  border-left:2px solid transparent;line-height:1.5;transition:color .2s ease,background .2s ease,border-color .2s ease
}
.toc-list a:hover{color:var(--primary);background:rgba(34,225,196,.06);border-left-color:var(--primary)}
.side-note{font-size:14px;line-height:1.8;color:var(--text-2)}
.side-links{display:grid;gap:4px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:color .2s ease,background .2s ease
}
.side-links a svg{width:14px;height:14px;flex-shrink:0;color:var(--text-3);transition:transform .2s ease,color .2s ease}
.side-links a:hover{color:var(--primary);background:rgba(34,225,196,.06)}
.side-links a:hover svg{color:var(--primary);transform:translateX(3px)}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.side-stat{background:rgba(150,200,255,.04);border:1px solid var(--line);border-radius:12px;padding:14px}
.side-stat strong{display:block;font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--amber)}
.side-stat span{font-size:12.5px;color:var(--text-3)}

/* ============ 延伸阅读 ============ */
.related{padding:8px 0 84px}
.section-head{max-width:720px;margin-bottom:34px}
.section-label{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--primary);
  background:var(--primary-soft);border:1px solid var(--primary-line);margin-bottom:16px
}
.section-title{font-size:34px;color:#F1F6FF}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--text-2);line-height:1.8}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.related-card{
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .28s ease
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 30px 60px -34px rgba(0,0,0,.95)}
.related-media{position:relative;aspect-ratio:16/9;background:linear-gradient(140deg,#101A2E,#0A1120);overflow:hidden}
.related-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-card:hover .related-media img{transform:scale(1.05)}
.related-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(7,11,20,.72))}
.related-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{font-size:18px;color:#EAF1FB;line-height:1.45}
.related-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.related-body .btn-link{margin-top:auto}

/* ============ 反馈表单 ============ */
.feedback{padding:0 0 84px}
.feedback-panel{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px;
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:44px 46px;box-shadow:var(--shadow-card);overflow:hidden
}
.feedback-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(150,200,255,.3),transparent)
}
.feedback-panel h2{font-size:26px;color:#EFF5FF;margin-bottom:12px}
.feedback-panel .lead{font-size:15.5px;color:var(--text-2);line-height:1.85}
.feedback-list{margin-top:22px;display:grid;gap:10px}
.feedback-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2)}
.feedback-list li::before{
  content:"";position:absolute;left:0;top:.66em;width:4px;height:4px;border-radius:50%;background:var(--primary)
}
.feedback-form{display:grid;gap:16px;align-content:start}
.field{display:grid;gap:8px}
.field label{font-size:13.5px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;background:rgba(7,11,20,.6);border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  padding:13px 15px;font-size:15px;color:var(--text);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease
}
.field textarea{min-height:110px;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-line);box-shadow:0 0 0 6px rgba(34,225,196,.14)}
.form-hint{font-size:13px;color:var(--text-3)}
.form-hint.is-error{color:var(--accent)}
.form-hint.is-ok{color:var(--primary)}

/* ============ 尾屏 CTA ============ */
.cta-section{padding:0 0 96px}
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(160deg,#0D1526,#0A111F 62%);
  border:1px solid var(--line);border-radius:24px;padding:72px 40px;
  box-shadow:var(--shadow-card)
}
.cta-glow{
  position:absolute;left:50%;top:-160px;width:520px;height:520px;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(34,225,196,.24),transparent 64%);pointer-events:none
}
.cta-panel h2{position:relative;font-size:34px;color:#F2F7FF;max-width:720px;margin:0 auto}
.cta-panel p{position:relative;max-width:620px;margin:18px auto 0;color:var(--text-2);font-size:16px;line-height:1.85}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:#060A12;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;color:#E6EDF7;margin-bottom:16px;font-weight:700}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:var(--text-2);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-contact strong{color:var(--text);font-weight:600}
.footer-contact a{color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3)
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px}
  .nav-links{gap:20px}
  .nav-search input{width:120px}
}
@media (max-width:1024px){
  :root{--header-h:56px}
  .nav-inner{gap:16px}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
    flex-direction:column;align-items:flex-start;gap:4px;
    padding:88px 24px 32px;
    background:rgba(8,13,24,.98);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    transform:translateX(105%);
    transition:transform .32s cubic-bezier(.4,0,.2,1);
    z-index:60;overflow-y:auto
  }
  .site-header.menu-open .nav-links{transform:translateX(0)}
  .nav-links a{width:100%;padding:13px 12px;font-size:16px;border-radius:10px}
  .nav-links a:hover{background:rgba(150,200,255,.06)}
  .nav-links a.active{background:rgba(34,225,196,.09)}
  .nav-links a.active::after{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-side{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .article-title{font-size:34px}
  .feedback-panel{grid-template-columns:minmax(0,1fr);gap:28px;padding:34px 30px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .brand-name{font-size:16px}
  .article-head{padding:40px 0 34px}
  .article-title{font-size:27px}
  .article-panel{padding:28px 22px 26px;border-radius:var(--radius)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-main{padding:44px 0 52px}
  .section-title{font-size:26px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related{padding-bottom:60px}
  .feedback{padding-bottom:60px}
  .cta-panel{padding:52px 22px;border-radius:20px}
  .cta-panel h2{font-size:25px}
  .cta-section{padding-bottom:64px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .article-tags{margin-top:32px}
}
@media (max-width:560px){
  .article-title{font-size:23px}
  .article-meta{gap:8px;font-size:13px}
  .article-kicker{margin-bottom:16px}
  .side-card{padding:20px}
  .side-stats{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .btn{height:46px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --panel-3:#161F33;
  --line:rgba(150,200,255,.14);
  --line-strong:rgba(150,200,255,.26);
  --text:#E6EDF7;
  --muted:#8B9AB3;
  --dim:#5D6B85;
  --primary:#22E1C4;
  --primary-deep:#0FAF9A;
  --magenta:#FF4E88;
  --amber:#FFC24B;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(2,8,20,.9), 0 0 0 1px var(--line) inset;
  --shadow-glow:0 0 0 1px rgba(34,225,196,.55), 0 8px 24px -10px rgba(34,225,196,.45), 0 26px 60px -30px rgba(34,225,196,.5);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(150,200,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(150,200,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";
  position:fixed;
  top:-220px;
  left:50%;
  transform:translateX(-50%);
  width:min(920px,120vw);
  height:620px;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(closest-side,rgba(34,225,196,.15),rgba(34,225,196,0));
}
h1,h2,h3,h4{margin:0;font-weight:750;line-height:1.28;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
svg{display:block}
::selection{background:rgba(34,225,196,.3);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,#3BF0D4,#18C4AA);
  color:#04201C;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,225,196,.7),0 10px 30px -10px rgba(34,225,196,.6),0 36px 80px -34px rgba(34,225,196,.65)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(14,21,36,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(34,225,196,.6);color:#9BF6E6;box-shadow:0 14px 34px -20px rgba(34,225,196,.6)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  padding:4px 0;
  transition:color .2s ease;
}
.btn-link svg{transition:transform .22s ease}
.btn-link:hover{color:#7FF2DE}
.btn-link:hover svg{transform:translateX(4px)}
.btn:focus-visible,.btn-link:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(34,225,196,.42);
  background:rgba(34,225,196,.08);
  color:#7FF2DE;
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
}
.tag-magenta{border-color:rgba(255,78,136,.45);background:rgba(255,78,136,.1);color:#FF9CBC}
.tag-amber{border-color:rgba(255,194,75,.45);background:rgba(255,194,75,.1);color:#FFD98A}
.tag-plain{border-color:var(--line-strong);background:rgba(18,26,44,.7);color:var(--muted)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:64px;
  z-index:100;
  background:rgba(7,11,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.94);
  border-bottom-color:var(--line);
}
.nav-inner{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}

.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(160deg,rgba(34,225,196,.2),rgba(34,225,196,.04));
  border:1px solid rgba(34,225,196,.38);
  box-shadow:0 8px 22px -14px rgba(34,225,196,.8);
}
.brand-mark svg{width:20px;height:20px}
.brand-name{
  font-size:17px;
  font-weight:750;
  color:var(--text);
  letter-spacing:.4px;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
}
.brand-sub{
  font-size:11px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:1.6px;
  padding:2px 6px;
  border:1px solid rgba(34,225,196,.35);
  border-radius:6px;
}

.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  font-weight:500;
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(18,26,44,.8)}
.nav-links a.active{color:#8CF5E3}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(34,225,196,.85);
}

.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 12px;
  border-radius:10px;
  background:rgba(14,21,36,.82);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{width:16px;height:16px;flex:none}
.nav-search input{
  width:132px;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--dim)}
.nav-search:focus-within{border-color:rgba(34,225,196,.7);box-shadow:0 0 0 4px rgba(34,225,196,.13)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:11px;
  border:1px solid var(--line-strong);
  background:rgba(14,21,36,.8);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:50%;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  transform:translateX(-50%);
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.site-header.nav-open .nav-toggle span{transform:translateX(-50%) rotate(45deg)}
.site-header.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(-90deg)}
.site-header.nav-open .nav-toggle span::after{opacity:0}

/* ---------- Hero ---------- */
main{position:relative;z-index:1;padding-top:64px}
.page-hero{padding:56px 0 40px}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--dim);
  margin-bottom:20px;
}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{width:12px;height:1px;background:var(--line-strong)}
.crumbs .current{color:var(--primary);font-weight:600}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.hero-copy h1{
  font-size:50px;
  font-weight:800;
  margin:16px 0 18px;
}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#22E1C4,#8CF5E3 60%,#FFC24B);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 24px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-row span{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:var(--muted);
  padding:6px 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(14,21,36,.6);
}
.trust-row span::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(34,225,196,.9);
}

.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 40px 90px -50px rgba(34,225,196,.55),0 26px 60px -34px rgba(2,8,20,.95);
  aspect-ratio:4/3;
  background:linear-gradient(150deg,#0E1524,#070B14);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover}
.hero-visual .frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.72));
}
.float-card{
  position:absolute;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(14,21,36,.74);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(150,200,255,.22);
  box-shadow:0 22px 50px -28px rgba(2,8,20,.95);
}
.float-card b{display:block;font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--primary)}
.float-card small{font-size:12px;color:var(--muted)}
.float-card.card-a{left:-14px;bottom:34px}
.float-card.card-b{right:-10px;top:26px}
.float-card.card-b b{color:var(--amber)}
.float-card.card-c{right:36px;bottom:-18px}
.float-card.card-c b{color:var(--magenta)}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  margin-top:36px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:14px 18px;
  border-radius:var(--radius);
  background:rgba(14,21,36,.7);
  border:1px solid var(--line);
}
.anchor-bar .label{font-size:13px;color:var(--dim);margin-right:6px}
.anchor-bar a{
  display:inline-flex;
  align-items:center;
  min-height:36px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:13.5px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.anchor-bar a:hover{color:#8CF5E3;border-color:rgba(34,225,196,.45);background:rgba(34,225,196,.08)}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:34px;margin:14px 0 12px}
.section-head p{color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--primary);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(34,225,196,.8)}

.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* ---------- 速查彩色模块 ---------- */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.quick-card{
  padding:26px 24px;
  border-radius:var(--radius);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.quick-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(200,230,255,.5),transparent);
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(34,225,196,.42);box-shadow:0 26px 60px -34px rgba(34,225,196,.55),0 0 0 1px rgba(34,225,196,.25) inset}
.quick-icon{
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  margin-bottom:18px;
  border:1px solid rgba(34,225,196,.35);
  background:rgba(34,225,196,.1);
}
.quick-icon svg{width:22px;height:22px}
.quick-card h3{font-size:19px;margin-bottom:10px}
.quick-card p{font-size:14.5px;color:var(--muted);line-height:1.7}
.quick-card .btn-link{margin-top:16px}
.quick-card.accent-magenta .quick-icon{border-color:rgba(255,78,136,.4);background:rgba(255,78,136,.12)}
.quick-card.accent-magenta .quick-icon svg{stroke:var(--magenta)}
.quick-card.accent-amber .quick-icon{border-color:rgba(255,194,75,.4);background:rgba(255,194,75,.12)}
.quick-card.accent-amber .quick-icon svg{stroke:var(--amber)}
.quick-card.accent-violet .quick-icon{border-color:rgba(150,160,255,.4);background:rgba(150,160,255,.12)}
.quick-card.accent-violet .quick-icon svg{stroke:#9FB0FF}

/* ---------- 图文交替 + 侧栏 ---------- */
.split-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 312px;
  gap:36px;
  align-items:start;
}
.flow-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:28px;
  align-items:center;
  padding:28px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease;
}
.flow-row + .flow-row{margin-top:24px}
.flow-row:hover{border-color:rgba(34,225,196,.34);transform:translateY(-3px)}
.flow-row::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:2px;
  background:linear-gradient(180deg,transparent,var(--primary),transparent);
  opacity:.6;
}
.flow-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  background:linear-gradient(150deg,#141D31,#0A1020);
}
.flow-media img{width:100%;height:100%;object-fit:cover}
.flow-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.5))}
.flow-num{
  position:absolute;
  left:16px;top:12px;
  font-family:var(--font-num);
  font-size:40px;
  font-weight:800;
  color:rgba(230,237,247,.16);
  line-height:1;
  z-index:2;
}
.flow-row.reverse .flow-media{order:2}
.flow-body h3{font-size:21px;margin:12px 0 10px}
.flow-body p{font-size:15px;color:var(--muted)}
.flow-points{margin:16px 0 18px;display:grid;gap:10px}
.flow-points li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--muted);
}
.flow-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(34,225,196,.7);
}

.side-wrap{display:grid;gap:20px;position:sticky;top:88px}
.side-card{
  padding:24px;
  border-radius:var(--radius);
  background:var(--panel-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.side-card h4{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h4::before{content:"";width:8px;height:8px;border-radius:3px;background:var(--primary);box-shadow:0 0 10px rgba(34,225,196,.8)}
.side-list{display:grid;gap:12px}
.side-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  padding-bottom:12px;
  border-bottom:1px dashed rgba(150,200,255,.14);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li b{color:var(--text);font-weight:600;flex:none}
.side-links{display:grid;gap:4px}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:44px;
  padding:0 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.side-links a:hover{color:#8CF5E3;background:rgba(34,225,196,.08);border-color:rgba(34,225,196,.35)}
.side-links a span{color:var(--dim);font-family:var(--font-num);font-size:12px}
.side-cta{
  padding:24px;
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(34,225,196,.14),rgba(14,21,36,.9));
  border:1px solid rgba(34,225,196,.4);
}
.side-cta p{font-size:14px;color:#B7C6DB;margin:10px 0 16px}

/* ---------- 时间线 ---------- */
.timeline{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  position:relative;
}
.timeline::before{
  content:"";
  position:absolute;
  top:26px;left:6%;right:6%;
  height:1px;
  background:linear-gradient(90deg,rgba(34,225,196,.05),rgba(34,225,196,.5),rgba(255,78,136,.4),rgba(34,225,196,.05));
}
.step{position:relative;padding-top:0}
.step .dot{
  position:relative;
  width:54px;height:54px;
  border-radius:16px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:17px;
  color:#04201C;
  background:linear-gradient(180deg,#3BF0D4,#18C4AA);
  box-shadow:0 12px 30px -16px rgba(34,225,196,.9);
  margin-bottom:20px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted)}
.step .tag{margin-bottom:10px}

/* ---------- 数据 / 编辑标准 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:24px;
}
.stat-panel{
  padding:34px 32px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.stat-panel h3{font-size:22px;margin-bottom:14px}
.stat-panel > p{color:var(--muted);font-size:15px}
.stat-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  margin-top:26px;
}
.stat-box{
  padding:20px;
  border-radius:var(--radius);
  background:var(--panel-2);
  border:1px solid var(--line);
}
.stat-box b{
  display:block;
  font-family:var(--font-num);
  font-size:30px;
  font-weight:750;
  color:var(--primary);
  line-height:1.1;
}
.stat-box.amber b{color:var(--amber)}
.stat-box.magenta b{color:var(--magenta)}
.stat-box small{font-size:13px;color:var(--muted);display:block;margin-top:8px}
.principle-list{margin-top:22px;display:grid;gap:12px}
.principle-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--muted);
}
.principle-list li svg{width:18px;height:18px;flex:none;margin-top:3px}
.stat-side{
  padding:28px;
  border-radius:var(--radius-lg);
  background:linear-gradient(165deg,rgba(255,194,75,.1),rgba(14,21,36,.95));
  border:1px solid rgba(255,194,75,.32);
}
.stat-side h4{font-size:18px;margin-bottom:12px;color:#FFD98A}
.stat-side p{font-size:14.5px;color:var(--muted)}
.stat-side .mini-list{margin:18px 0;display:grid;gap:10px}
.stat-side .mini-list li{
  font-size:14px;
  color:#C9D6E8;
  padding-left:20px;
  position:relative;
}
.stat-side .mini-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--amber);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease,background-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{
  background:rgba(18,26,44,.86);
  border-color:rgba(34,225,196,.45);
  box-shadow:0 24px 60px -40px rgba(34,225,196,.7);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:22px 24px;
  font-size:17px;
  font-weight:650;
  color:var(--text);
  min-height:66px;
}
.faq-sign{
  position:relative;
  width:26px;height:26px;
  flex:none;
  border-radius:8px;
  border:1px solid var(--line-strong);
  transition:border-color .25s ease,background-color .25s ease;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:11px;height:1.6px;
  border-radius:2px;
  background:var(--primary);
  transform:translate(-50%,-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.faq-sign::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.open .faq-sign{border-color:var(--primary);background:rgba(34,225,196,.14)}
.faq-item.open .faq-sign::after{transform:translate(-50%,-50%) rotate(0);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
  border-left:2px solid var(--primary);
  margin:0 24px 0 24px;
}
.faq-a p{
  padding:0 0 24px 18px;
  font-size:15px;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid rgba(34,225,196,.28);
  padding:64px 48px;
  text-align:center;
  background:linear-gradient(160deg,rgba(34,225,196,.12),rgba(7,11,20,.96) 55%);
  box-shadow:0 50px 110px -60px rgba(34,225,196,.75);
}
.cta-band::before{
  content:"";
  position:absolute;
  top:-140px;left:50%;
  transform:translateX(-50%);
  width:520px;height:320px;
  background:radial-gradient(closest-side,rgba(34,225,196,.32),transparent);
  pointer-events:none;
}
.cta-band h2{font-size:32px;margin:16px 0 14px;position:relative}
.cta-band p{color:#A9B8CE;max-width:640px;margin:0 auto;position:relative;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;position:relative}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,21,36,.6),rgba(7,11,20,1));
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--muted);
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:18px;
  color:var(--text);
  letter-spacing:.4px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{color:var(--primary);padding-left:3px}
.footer-contact li{font-size:14px;color:var(--muted);line-height:1.7}
.footer-contact strong{color:#B7C6DB;font-weight:600}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--dim);
}

/* ---------- 骨架屏 ---------- */
.skeleton{
  border-radius:12px;
  background:linear-gradient(90deg,rgba(150,200,255,.06) 25%,rgba(150,200,255,.13) 37%,rgba(150,200,255,.06) 63%);
  background-size:400% 100%;
  animation:skeletonMove 1.4s ease infinite;
}
@keyframes skeletonMove{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 28px}
  .hero-copy h1{font-size:44px}
  .nav-search input{width:110px}
}
@media (max-width:1080px){
  .nav-links a{padding:0 9px;font-size:14px}
  .nav-left{gap:22px}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .timeline::before{display:none}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:960px){
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(320px,84vw);
    padding:88px 22px 28px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:rgba(8,13,24,.98);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s ease;
    z-index:120;
  }
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{height:48px;border-radius:12px;font-size:15.5px}
  .nav-links a.active::after{display:none}
  .nav-links a.active{background:rgba(34,225,196,.12)}
  .nav-search{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-copy h1{font-size:36px;margin-top:12px}
  .hero-visual .frame{aspect-ratio:16/10}
  .float-card.card-a{left:10px;bottom:14px}
  .float-card.card-b{right:10px;top:14px}
  .float-card.card-c{display:none}
  .split-layout{grid-template-columns:1fr}
  .side-wrap{position:static}
  .section{padding:64px 0}
  .section-head h2{font-size:27px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 28px}
  .flow-row{grid-template-columns:1fr;padding:22px}
  .flow-row.reverse .flow-media{order:0}
  .cta-band{padding:44px 22px;border-radius:20px}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:560px){
  .hero-copy h1{font-size:30px}
  .hero-lead{font-size:15.5px}
  .quick-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .anchor-bar{padding:12px}
  .faq-q{font-size:15.5px;padding:18px}
  .float-card{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.quick-card:hover,.flow-row:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --line:rgba(150,200,255,.14);
  --line-strong:rgba(150,200,255,.28);
  --primary:#22E1C4;
  --primary-deep:#0FAF98;
  --primary-soft:rgba(34,225,196,.14);
  --accent:#FF4E88;
  --amber:#FFC24B;
  --text:#E6EDF7;
  --text-2:#8B9AB3;
  --text-3:#5D6B85;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 22px 48px -32px rgba(0,0,0,.9);
  --shadow-float:0 30px 70px -40px rgba(0,0,0,1);
  --max:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(150,200,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(150,200,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";
  position:fixed;
  top:-260px;
  right:-180px;
  width:640px;
  height:640px;
  border-radius:50%;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(circle,rgba(34,225,196,.09),transparent 62%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:0}
p{margin:0}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
header,main,footer{position:relative;z-index:1}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(14,21,36,.7),rgba(7,11,20,0))}
.section-head{max-width:720px;margin-bottom:52px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--primary);text-transform:uppercase;margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}
.section-head h2{font-size:34px;margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}
.lead{color:var(--text-2)}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:64px;
  display:flex;
  align-items:center;
  background:rgba(7,11,20,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(6,10,18,.92);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:rgba(34,225,196,.1);border:1px solid rgba(34,225,196,.32)}
.brand-mark svg{width:20px;height:20px}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.brand-sub{font-size:11px;font-weight:600;color:var(--primary);margin-left:5px;letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:20px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:12px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
  box-shadow:0 0 12px rgba(34,225,196,.7);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(.5)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 14px;
  border-radius:12px;
  background:rgba(14,21,36,.8);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{width:16px;height:16px;flex-shrink:0}
.nav-search input{
  width:150px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 6px rgba(34,225,196,.1)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .24s ease,opacity .2s ease;
}
.nav-toggle span{position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;z-index:50;
  background:rgba(4,7,13,.68);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .24s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--primary);
  color:#04140F;
  box-shadow:0 0 0 1px rgba(34,225,196,.5),0 0 18px rgba(34,225,196,.3);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,225,196,.7),0 0 26px rgba(34,225,196,.46),0 0 52px rgba(34,225,196,.22);
}
.btn-ghost{
  border-color:var(--line);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(255,255,255,.05)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:700}
.link-arrow svg{width:15px;height:15px;transition:transform .22s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  background:rgba(255,255,255,.02);
}
.tag-primary{color:var(--primary);border-color:rgba(34,225,196,.4);background:var(--primary-soft)}
.tag-accent{color:var(--accent);border-color:rgba(255,78,136,.38);background:rgba(255,78,136,.1)}
.tag-amber{color:var(--amber);border-color:rgba(255,194,75,.38);background:rgba(255,194,75,.1)}

/* ---------- Cards ---------- */
.card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(150,200,255,.35),transparent);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-float)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--text-2);font-size:15px;line-height:1.7}
.card-icon{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  border:1px solid rgba(34,225,196,.3);
  background:var(--primary-soft);
  margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px}

/* ---------- Hero ---------- */
.page-hero{padding:132px 0 56px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{width:14px;height:1px;background:var(--line-strong);display:inline-block}
.breadcrumb .current{color:var(--primary)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-copy h1{font-size:50px;line-height:1.16;margin:20px 0 20px}
.hero-lead{color:var(--text-2);font-size:17px;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:32px 0 28px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--text-2);
  padding:6px 13px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(14,21,36,.7);
}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(34,225,196,.8)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:0 0 70px -20px rgba(34,225,196,.35),var(--shadow-float);
}
.float-card{
  position:absolute;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(18,26,44,.82);
  border:1px solid rgba(150,200,255,.2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
}
.float-card strong{display:block;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--primary);line-height:1.2}
.float-card span{font-size:12px;color:var(--text-2)}
.float-card.one{left:-22px;bottom:34px}
.float-card.two{right:-16px;top:32px}
.float-card.two strong{color:var(--amber)}
.anchor-bar{
  display:flex;gap:10px;flex-wrap:wrap;
  margin-top:52px;padding-top:22px;
  border-top:1px solid var(--line);
}
.anchor-bar a{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(14,21,36,.6);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.anchor-bar a:hover{color:var(--primary);border-color:rgba(34,225,196,.45);background:var(--primary-soft)}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.bento .card:nth-child(1){grid-column:span 2}
.bento .card:nth-child(6){grid-column:span 2;background:linear-gradient(140deg,var(--panel-2),var(--panel))}
.bento .card h3{font-size:19px}
.bento-list{margin-top:16px;display:grid;gap:8px}
.bento-list li{font-size:14px;color:var(--text-3);padding-left:16px;position:relative}
.bento-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--primary)}

/* ---------- Timeline ---------- */
.timeline{display:grid;gap:16px;max-width:920px}
.tl-item{display:grid;grid-template-columns:62px 1fr;gap:22px;align-items:stretch}
.tl-num{
  display:grid;place-items:center;
  width:62px;border-radius:var(--radius);
  font-family:var(--font-num);font-size:20px;font-weight:700;
  color:var(--primary);
  background:rgba(34,225,196,.07);
  border:1px solid rgba(34,225,196,.28);
  box-shadow:inset 0 0 20px rgba(34,225,196,.08);
}
.tl-body{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 26px;
  transition:border-color .22s ease,transform .22s ease;
}
.tl-body:hover{border-color:var(--line-strong);transform:translateX(4px)}
.tl-body h3{font-size:19px;margin-bottom:8px}
.tl-body p{color:var(--text-2);font-size:15px}
.tl-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}

/* ---------- Scene rows ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:34px 0}
.scene-row:nth-child(even) .scene-media{order:2}
.scene-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.scene-index{
  font-family:var(--font-num);font-size:46px;font-weight:700;
  color:rgba(150,200,255,.16);line-height:1;
  margin-bottom:10px;display:block;
}
.scene-copy h3{font-size:24px;margin:14px 0 12px}
.scene-copy p{color:var(--text-2);font-size:16px;max-width:460px}
.scene-copy .link-arrow{margin-top:18px}

/* ---------- Prepare ---------- */
.prepare-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:start}
.check-list{display:grid;gap:14px}
.check-list li{
  display:flex;gap:14px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 22px;
  transition:border-color .22s ease,background .22s ease;
}
.check-list li:hover{border-color:var(--line-strong);background:var(--panel-2)}
.check-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  background:var(--primary-soft);
  border:1px solid rgba(34,225,196,.36);
  margin-top:3px;
}
.check-mark svg{width:14px;height:14px}
.check-list h3{font-size:17px;margin-bottom:5px}
.check-list p{color:var(--text-2);font-size:14.5px}
.aside-panel{
  background:linear-gradient(150deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px;
  position:sticky;top:88px;
}
.aside-panel h3{font-size:18px;margin-bottom:16px}
.aside-panel ul{display:grid;gap:12px}
.aside-panel li{font-size:14.5px;color:var(--text-2);display:flex;gap:10px}
.aside-panel li strong{color:var(--text);font-weight:700}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:10px;flex:0 0 6px}

/* ---------- Stats ---------- */
.stat-band{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(18,26,44,.95),rgba(11,17,30,.95));
  padding:44px 40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}
.stat-item{border-left:1px solid var(--line);padding-left:24px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item strong{
  display:block;font-family:var(--font-num);font-size:36px;font-weight:700;
  color:var(--primary);line-height:1.15;margin-bottom:6px;
}
.stat-item:nth-child(2) strong{color:var(--amber)}
.stat-item:nth-child(3) strong{color:var(--accent)}
.stat-item span{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease,box-shadow .22s ease;
}
.faq-item.open{
  border-color:rgba(34,225,196,.4);
  background:rgba(18,26,44,.78);
  box-shadow:0 0 32px -14px rgba(34,225,196,.5);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;text-align:left;
  font-size:16.5px;font-weight:700;
}
.faq-icon{position:relative;flex:0 0 18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
  border-left:2px solid transparent;
}
.faq-item.open .faq-a{max-height:320px;border-left-color:var(--primary)}
.faq-a p{padding:0 26px 22px 28px;color:var(--text-2);font-size:15px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg,#0E1524,#121A2C 60%,rgba(34,225,196,.08));
  padding:64px 56px;
  display:grid;
  grid-template-columns:1.2fr auto;
  gap:36px;
  align-items:center;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,225,196,.22),transparent 64%);
  pointer-events:none;
}
.cta-band h2{font-size:32px;margin-bottom:14px}
.cta-band p{color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:72px 0 32px;background:rgba(6,10,18,.7)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:18px;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text);margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-contact li{font-size:14px;color:var(--text-2);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-contact li strong{color:var(--text-3);font-weight:600;margin-right:4px}
.footer-bottom{
  margin-top:52px;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .hero-copy h1{font-size:44px}
  .nav-search input{width:120px}
}
@media (max-width:1024px){
  .section{padding:80px 0}
  .nav-links{
    position:fixed;top:0;right:0;z-index:70;
    width:290px;height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 32px;
    background:rgba(10,15,26,.98);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{padding:16px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--primary)}
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual img{aspect-ratio:16/10}
  .float-card.one{left:12px;bottom:16px}
  .float-card.two{right:12px;top:16px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento .card:nth-child(1),.bento .card:nth-child(6){grid-column:span 2}
  .prepare-grid{grid-template-columns:1fr;gap:32px}
  .aside-panel{position:static}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;padding:48px 36px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:60px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:26px}
  .page-hero{padding:104px 0 40px}
  .hero-copy h1{font-size:32px}
  .hero-actions .btn{flex:1 1 auto}
  .anchor-bar{margin-top:36px;overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px}
  .anchor-bar a{flex:0 0 auto}
  .scene-row{grid-template-columns:1fr;gap:24px;padding:22px 0}
  .scene-row:nth-child(even) .scene-media{order:0}
  .scene-copy h3{font-size:20px}
  .tl-item{grid-template-columns:1fr;gap:12px}
  .tl-num{width:52px;height:52px;border-radius:14px}
  .stat-band{padding:30px 24px}
  .stat-item strong{font-size:28px}
  .cta-band h2{font-size:24px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:560px){
  .bento{grid-template-columns:1fr}
  .bento .card:nth-child(1),.bento .card:nth-child(6){grid-column:span 1}
  .stat-band{grid-template-columns:1fr}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:18px}
  .stat-item:first-child{border-top:0;padding-top:0}
  .float-card{padding:11px 14px}
  .float-card strong{font-size:18px}
  .hero-points li{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .card:hover,.btn:hover,.tl-body:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#070B14;
  --panel:#0E1524;
  --panel-2:#121A2C;
  --line:rgba(150,200,255,.14);
  --line-strong:rgba(150,200,255,.28);
  --primary:#22E1C4;
  --primary-soft:rgba(34,225,196,.12);
  --accent:#FF4E88;
  --amber:#FFC24B;
  --text:#E6EDF7;
  --text-2:#8B9AB3;
  --text-3:#5D6B85;
  --r-xl:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 10px 30px rgba(2,6,16,.55);
  --shadow-2:0 22px 60px rgba(2,6,16,.72);
  --glow:0 0 0 1px rgba(34,225,196,.45),0 8px 22px rgba(34,225,196,.22),0 26px 64px rgba(34,225,196,.14);
  --container:1240px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(1100px 560px at 80% -8%, rgba(34,225,196,.10), transparent 62%),
    radial-gradient(760px 420px at 6% 6%, rgba(255,78,136,.075), transparent 62%),
    linear-gradient(rgba(150,200,255,.04) 1px, transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg, rgba(150,200,255,.04) 1px, transparent 1px) 0 0/64px 64px,
    var(--bg);
  background-attachment:fixed,fixed,scroll,scroll,fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:0;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(34,225,196,.28);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,#37F0D2,#18C9AE);
  color:#04231E;
  box-shadow:0 0 0 1px rgba(34,225,196,.5),0 8px 22px rgba(34,225,196,.24),0 22px 52px rgba(34,225,196,.14);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,225,196,.7),0 10px 26px rgba(34,225,196,.32),0 30px 72px rgba(34,225,196,.2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(34,225,196,.55);color:var(--primary);background:rgba(34,225,196,.06);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;transition:gap .2s ease,color .2s ease;
}
.link-arrow svg{width:15px;height:15px;transition:transform .2s ease;}
.link-arrow:hover{gap:10px;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid rgba(34,225,196,.36);color:var(--primary);background:rgba(34,225,196,.07);
}
.tag-accent{border-color:rgba(255,78,136,.4);color:#FF7BA6;background:rgba(255,78,136,.08);}
.tag-amber{border-color:rgba(255,194,75,.4);color:var(--amber);background:rgba(255,194,75,.08);}
.badge-reco{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  padding:4px 14px;border-radius:999px;font-size:12px;font-weight:700;
  background:linear-gradient(180deg,#FFD98A,#FFB524);color:#3B2400;
  box-shadow:0 8px 22px rgba(255,194,75,.28);
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:64px;
  background:rgba(7,11,20,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,height .25s ease;
}
.site-header.is-scrolled{background:rgba(6,10,18,.92);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px;}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  display:grid;place-items:center;
  background:radial-gradient(circle at 30% 20%, rgba(34,225,196,.24), rgba(34,225,196,.05));
  border:1px solid rgba(34,225,196,.35);
  box-shadow:0 0 18px rgba(34,225,196,.18) inset;
}
.brand-mark svg{width:21px;height:21px;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.5px;white-space:nowrap;}
.brand-sub{
  font-size:12px;font-weight:600;color:var(--text-2);margin-left:6px;
  padding-left:8px;border-left:1px solid var(--line-strong);letter-spacing:1px;
}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--text-2);font-weight:500;
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(34,225,196,0));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);text-shadow:0 0 16px rgba(34,225,196,.4);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:rgba(14,21,36,.75);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(34,225,196,.6);box-shadow:0 0 0 6px rgba(34,225,196,.1);}
.nav-search svg{width:17px;height:17px;flex:none;}
.nav-search input{
  width:150px;border:none;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  background:rgba(14,21,36,.75);
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* ---------- 面包屑 ---------- */
.crumbs{padding:20px 0 0;padding-top:88px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);}
.crumbs li{display:inline-flex;align-items:center;gap:10px;}
.crumbs li+li::before{content:"";width:14px;height:1px;background:var(--line-strong);display:inline-block;}
.crumbs a{color:var(--text-2);transition:color .2s ease;}
.crumbs a:hover{color:var(--primary);}
.crumbs .current{color:var(--primary);}

/* ---------- 内页首屏 ---------- */
.page-hero{padding:28px 0 0;}
.hero-shell{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:#0A1120 url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  box-shadow:var(--shadow-2);
}
.hero-shell::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg, rgba(5,9,18,.96) 8%, rgba(5,9,18,.86) 46%, rgba(5,9,18,.6) 100%);
}
.hero-shell::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle, rgba(34,225,196,.22), transparent 65%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:56px 52px 52px;max-width:900px;}
.hero-kicker{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.page-hero h1{
  font-size:52px;line-height:1.16;margin-bottom:20px;
  background:linear-gradient(180deg,#FFFFFF,#B9CBDD);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:660px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;}
.stat-pill{
  display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:14px;
  border:1px solid var(--line);background:rgba(14,21,36,.72);backdrop-filter:blur(10px);
}
.stat-pill b{font-family:var(--font-num);font-size:17px;color:var(--primary);font-weight:700;}
.stat-pill span{font-size:13px;color:var(--text-2);}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;
  padding:14px;border-radius:var(--r-md);
  border:1px solid var(--line);background:rgba(14,21,36,.7);
}
.anchor-bar a{
  padding:8px 16px;border-radius:999px;font-size:14px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease;
}
.anchor-bar a:hover{color:var(--primary);border-color:rgba(34,225,196,.4);background:rgba(34,225,196,.07);}

/* ---------- 板块通用 ---------- */
section{padding:96px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .tag{margin-bottom:16px;}
.section-head h2{font-size:34px;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ---------- 服务概览卡 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.svc-card{
  position:relative;padding:28px 26px 26px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.svc-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,225,196,.55),transparent);
}
.svc-card:hover{transform:translateY(-4px);border-color:rgba(34,225,196,.42);box-shadow:var(--shadow-1);}
.svc-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  border:1px solid rgba(34,225,196,.36);background:rgba(34,225,196,.08);
}
.svc-icon svg{width:24px;height:24px;}
.svc-card h3{font-size:19px;margin-bottom:10px;}
.svc-card p{font-size:14.5px;color:var(--text-2);margin-bottom:16px;}
.svc-meta{
  display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);
  padding-top:14px;border-top:1px solid var(--line);
}

/* ---------- 对照双列 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
  padding:30px 28px;border-radius:var(--r-md);background:var(--panel-2);
  border:1px solid var(--line);
}
.compare-col.is-primary{
  background:linear-gradient(160deg,rgba(34,225,196,.1),rgba(14,21,36,.9));
  border-color:rgba(34,225,196,.4);
  box-shadow:var(--glow);
}
.compare-col h3{display:flex;align-items:center;gap:10px;font-size:20px;margin-bottom:8px;}
.compare-col .sub{font-size:13.5px;color:var(--text-2);margin-bottom:20px;}
.compare-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:14.8px;color:var(--text-2);
}
.compare-list li:last-child{border-bottom:none;}
.compare-list svg{width:18px;height:18px;flex:none;margin-top:4px;}
.compare-list b{color:var(--text);font-weight:600;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:flow;}
.flow-step{
  position:relative;padding:28px 24px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease;
}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(34,225,196,.4);}
.flow-num{
  font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(34,225,196,.55);margin-bottom:16px;
}
.flow-step h3{font-size:18px;margin-bottom:10px;}
.flow-step p{font-size:14.5px;color:var(--text-2);}
.flow-step::after{
  content:"";position:absolute;right:-12px;top:44px;width:24px;height:1px;
  background:linear-gradient(90deg,rgba(34,225,196,.5),transparent);
}
.flow-step:last-child::after{display:none;}

/* ---------- 安全提示 ---------- */
.safety{
  display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;
  padding:38px;border-radius:var(--r-xl);
  background:linear-gradient(150deg,rgba(255,78,136,.09),rgba(14,21,36,.92) 55%);
  border:1px solid rgba(255,78,136,.28);
}
.safety h2{font-size:30px;margin-bottom:16px;}
.safety p{color:var(--text-2);font-size:15.5px;margin-bottom:22px;}
.safety-list li{
  display:flex;gap:12px;padding:12px 0;font-size:14.8px;color:var(--text-2);
  border-bottom:1px dashed rgba(150,200,255,.12);
}
.safety-list li:last-child{border-bottom:none;}
.safety-list svg{width:18px;height:18px;flex:none;margin-top:4px;}
.safety-visual{
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:#0B1220;
}
.safety-visual img{width:100%;height:100%;object-fit:cover;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--panel);margin-bottom:14px;overflow:hidden;
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.faq-item.open{
  border-color:rgba(34,225,196,.42);
  background:linear-gradient(150deg,rgba(34,225,196,.08),rgba(14,21,36,.94));
  box-shadow:var(--shadow-1);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  border-left:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.faq-item.open .faq-q{border-left-color:var(--primary);color:var(--primary);}
.faq-sign{position:relative;width:20px;height:20px;flex:none;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease,opacity .24s ease;
}
.faq-sign::before{width:14px;height:2px;}
.faq-sign::after{width:2px;height:14px;}
.faq-item.open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--text-2);font-size:15px;border-left:2px solid rgba(34,225,196,.35);margin-left:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:64px 48px;text-align:center;
  background:radial-gradient(700px 320px at 50% 0%, rgba(34,225,196,.18), transparent 65%),var(--panel-2);
  border:1px solid rgba(34,225,196,.28);
}
.cta-band::after{
  content:"";position:absolute;left:50%;top:-160px;transform:translateX(-50%);
  width:520px;height:320px;border-radius:50%;
  background:radial-gradient(circle, rgba(34,225,196,.22), transparent 68%);
  pointer-events:none;
}
.cta-band h2{position:relative;z-index:2;font-size:34px;margin-bottom:16px;}
.cta-band p{position:relative;z-index:2;color:var(--text-2);max-width:640px;margin:0 auto 28px;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:rgba(6,10,18,.88);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px;}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:18px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:11px;}
.footer-contact strong{color:var(--text);font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 34px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .page-hero h1{font-size:46px;}
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-step:nth-child(2)::after{display:none;}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:64px;right:0;width:min(330px,86vw);
    height:calc(100vh - 64px);flex-direction:column;align-items:stretch;gap:6px;
    padding:22px;background:rgba(9,14,24,.98);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .28s ease;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{padding:13px 4px;font-size:16px;border-bottom:1px solid rgba(150,200,255,.09);}
  .nav-links a::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{display:none;}
  .hero-inner{padding:44px 34px 40px;}
  .page-hero h1{font-size:38px;}
  .compare{grid-template-columns:1fr;}
  .safety{grid-template-columns:1fr;padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  section{padding:64px 0;}
  .crumbs{padding-top:80px;}
  .page-hero h1{font-size:31px;}
  .hero-lead{font-size:15.5px;}
  .hero-inner{padding:34px 24px 32px;}
  .section-head h2{font-size:26px;}
  .grid-cards{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-step::after{display:none;}
  .cta-band{padding:44px 22px;}
  .cta-band h2{font-size:26px;}
  .safety h2{font-size:24px;}
  .brand-sub{display:none;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .anchor-bar{padding:10px;gap:8px;}
  .anchor-bar a{padding:7px 12px;font-size:13px;}
  .stat-pill{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .compare-col{padding:24px 20px;}
  .svc-card{padding:24px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .btn:hover,.svc-card:hover,.flow-step:hover{transform:none;}
}