/* roulang page: index */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --c-on-dark:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --sh-card:0 2px 8px rgba(23,18,42,.05);
  --sh-card-hover:0 16px 36px rgba(109,59,245,.14);
  --t:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-accent{background:var(--c-accent);color:var(--c-accent-ink)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,245,60,.35)}
.btn-accent:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;letter-spacing:.2px;
}
.badge-cat{background:var(--c-primary-100);color:var(--c-primary)}
.badge-accent{background:var(--c-accent);color:var(--c-accent-ink)}
.badge-hot{background:var(--c-hot);color:#fff}
.badge-dark{background:rgba(255,255,255,.10);color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:120;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
  transition:background 240ms ease,box-shadow 240ms ease,border-color 240ms ease,backdrop-filter 240ms ease;
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(12,8,25,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.nav-wrap{display:flex;align-items:center;height:72px;transition:height 240ms ease}
.site-header.is-stuck .nav-wrap{height:64px}
.logo{display:flex;align-items:center;gap:10px;margin-right:auto;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#9D6BFF 55%,var(--c-accent));
  color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;
}
.logo-text{display:flex;align-items:center;gap:8px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.2px}
.logo-badge{
  display:inline-flex;align-items:center;height:20px;padding:0 7px;
  border-radius:999px;background:var(--c-accent);color:var(--c-accent-ink);
  font-size:11px;font-weight:700;line-height:1;
}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;padding:10px 13px;font-size:15px;color:rgba(255,255,255,.78);
  transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:30%;right:30%;bottom:4px;height:2px;
  background:var(--c-accent);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform var(--t);
}
.nav-link:hover,.nav-link.current{color:#fff}
.nav-link:hover::after,.nav-link.current::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:26px}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);color:#fff;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--t),border-color var(--t);
}
.icon-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.hamburger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-search{
  max-height:0;overflow:hidden;transition:max-height 260ms ease;
  border-top:1px solid transparent;
}
.nav-search.open{max-height:96px;border-top-color:rgba(255,255,255,.08)}
.search-form{display:flex;gap:12px;padding:16px 0}
.search-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-input);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-form input::placeholder{color:rgba(255,255,255,.45)}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.18)}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);
  transform:translateX(102%);transition:transform 280ms ease;
  display:flex;flex-direction:column;padding:20px 24px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:transparent;color:#fff;font-size:20px;cursor:pointer;line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:28px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a.current{color:var(--c-accent)}
.drawer-nav a::after{content:"›";font-size:20px;color:rgba(255,255,255,.4)}
.drawer-cta{margin-top:auto}
body.no-scroll{overflow:hidden}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:86vh;background:var(--c-dark);color:#fff;
  display:flex;align-items:center;padding:150px 0 100px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:640px;height:640px;
  background:linear-gradient(140deg,rgba(109,59,245,.55),rgba(194,245,60,.22) 62%,transparent 78%);
  clip-path:polygon(46% 0,100% 0,100% 72%,58% 100%,0 58%);
  filter:blur(6px);opacity:.55;pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.86);margin-bottom:22px;
}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.18)}
.hero h1{
  font-size:46px;line-height:1.18;font-weight:800;letter-spacing:-.5px;color:#fff;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--c-accent)}
.hero-sub{font-size:17px;line-height:1.75;color:rgba(255,255,255,.72);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:14px 26px}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.78)}
.tick{
  width:20px;height:20px;border-radius:50%;background:var(--c-accent);color:var(--c-accent-ink);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex-shrink:0;
}
.hero-visual{position:relative;border-radius:22px;min-height:420px;
  background-image:linear-gradient(180deg,rgba(12,8,25,.72),rgba(12,8,25,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.hero-app-card{
  position:absolute;left:36px;bottom:36px;right:36px;max-width:340px;
  background:#fff;border-radius:20px;padding:18px 18px 20px;
  box-shadow:0 18px 44px rgba(0,0,0,.4);
}
.app-bar{display:flex;gap:6px;margin-bottom:16px}
.app-bar span{width:9px;height:9px;border-radius:50%;background:#E1DCF0}
.app-bar span:first-child{background:var(--c-primary)}
.app-bar span:nth-child(2){background:var(--c-accent)}
.skeleton-line{height:11px;border-radius:6px;background:linear-gradient(90deg,#EFEBFA,#F8F6FE);margin-bottom:11px}
.skeleton-line.w70{width:70%}
.skeleton-line.w45{width:45%}
.skeleton-line:last-child{margin-bottom:0}

/* ---------- 信任条 ---------- */
.trust-bar{background:var(--c-dark-2);border-bottom:1px solid rgba(255,255,255,.08)}
.trust-list{display:flex;align-items:center;justify-content:space-between;padding:22px 0;gap:0}
.trust-list li{
  display:flex;align-items:center;gap:10px;flex:1;justify-content:center;
  color:rgba(255,255,255,.78);font-size:14px;padding:0 18px;
  border-right:1px solid rgba(255,255,255,.10);
}
.trust-list li:last-child{border-right:none}
.trust-list li:first-child{justify-content:flex-start;padding-left:0}
.trust-list li:last-child{justify-content:flex-end;padding-right:0}
.trust-ico{width:26px;height:26px;border-radius:8px;background:rgba(194,245,60,.14);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.trust-ico svg{width:15px;height:15px;stroke:var(--c-accent);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0}
.section-light{background:var(--c-light)}
.section-dark{background:var(--c-dark);color:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-label{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:700;margin-bottom:16px;
}
.section-dark .sec-label{background:rgba(194,245,60,.14);color:var(--c-accent)}
.sec-title{position:relative;font-size:34px;line-height:1.28;font-weight:700;padding-left:16px;color:var(--c-text)}
.sec-title::before{
  content:"";position:absolute;left:0;top:9px;width:4px;height:20px;border-radius:2px;background:var(--c-accent);
}
.section-dark .sec-title{color:#fff}
.section-head.center .sec-title{padding-left:0}
.section-head.center .sec-title::before{display:none}
.sec-desc{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:680px}
.section-head.center .sec-desc{margin-left:auto;margin-right:auto}
.section-dark .sec-desc{color:rgba(255,255,255,.70)}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px 26px;box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card::before{
  content:"";position:absolute;left:24px;top:0;width:34px;height:2px;background:var(--c-accent);border-radius:2px;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-card-hover)}
.step-num{
  font-size:28px;font-weight:800;color:var(--c-accent);letter-spacing:1px;
  font-variant-numeric:tabular-nums;line-height:1;margin-bottom:16px;
}
.step-card h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px}
.step-card p{font-size:15px;line-height:1.75;color:var(--c-text-2)}
.steps::after{
  content:"";position:absolute;top:74px;left:12%;right:12%;height:1px;
  border-top:1px dashed rgba(109,59,245,.32);z-index:0;
}

/* ---------- 场景证明 ---------- */
.case-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:stretch}
.case-lead{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.case-lead:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-card-hover)}
.case-lead-media{aspect-ratio:16/10;overflow:hidden}
.case-lead-media img{width:100%;height:100%;object-fit:cover}
.case-lead-body{padding:22px 24px 26px}
.case-lead-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:12px 0 10px}
.case-lead-body p{font-size:15px;line-height:1.75;color:var(--c-text-2)}
.case-side{display:grid;gap:24px}
.case-mini{
  display:grid;grid-template-columns:132px 1fr;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.case-mini:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-card-hover)}
.case-mini img{width:132px;height:96px;object-fit:cover;border-radius:var(--r-img)}
.case-mini h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:8px}
.case-mini p{font-size:14px;line-height:1.7;color:var(--c-text-2)}
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px;
  background:var(--c-dark);border-radius:var(--r-card);padding:30px 28px;
}
.metric{text-align:center}
.metric strong{
  display:block;font-size:30px;font-weight:800;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric span{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:8px}

/* ---------- 功能速览 ---------- */
.feature-band{background:var(--c-primary-100);border-radius:24px;padding:44px 40px}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-item{display:flex;flex-direction:column;gap:12px}
.feature-ico{
  width:44px;height:44px;border-radius:13px;background:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(109,59,245,.12);
}
.feature-ico svg{width:20px;height:20px;stroke:var(--c-primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feature-item h3{font-size:17px;font-weight:600}
.feature-item p{font-size:14px;line-height:1.7;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.faq-item.open{border-color:rgba(109,59,245,.32);box-shadow:0 10px 26px rgba(109,59,245,.10)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;
}
.faq-icon{
  width:26px;height:26px;border-radius:50%;background:var(--c-primary-100);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;flex-shrink:0;
  transition:transform 260ms ease,background 260ms ease,color 260ms ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--c-accent);color:var(--c-accent-ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
.faq-item.open .faq-a{max-height:340px}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.news-head .sec-title{margin-bottom:0}
.news-more{font-size:15px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;transition:gap var(--t),color var(--t)}
.news-more:hover{gap:11px;color:var(--c-primary-600)}
.news-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
.news-lead{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-lead:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-card-hover)}
.news-lead-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-100)}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:20px}
.news-lead-body h3{
  font-size:20px;font-weight:600;line-height:1.5;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-lead-body p{
  font-size:15px;line-height:1.75;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--c-text-3)}
.news-side{display:grid;gap:16px}
.news-item{
  display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:14px;
  box-shadow:var(--sh-card);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-item:hover{transform:translateY(-3px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-card-hover)}
.news-item img{width:96px;height:72px;object-fit:cover;border-radius:10px}
.news-item h3{
  font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item .news-meta{margin-top:0}
.news-empty{
  min-height:200px;border:1px dashed rgba(109,59,245,.4);border-radius:var(--r-card);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;color:var(--c-text-2);text-align:center;padding:28px;
}
.news-empty svg{width:34px;height:34px;stroke:var(--c-primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.news-empty strong{font-size:16px;font-weight:600;color:var(--c-text)}
.news-empty span{font-size:14px;color:var(--c-text-3)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;padding:88px 0;color:#fff;
  background-image:linear-gradient(180deg,rgba(12,8,25,.86),rgba(12,8,25,.96)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-inner{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.cta-inner h2{font-size:34px;line-height:1.3;font-weight:700;color:#fff;margin-bottom:16px}
.cta-inner p{font-size:16px;line-height:1.75;color:rgba(255,255,255,.72);max-width:520px}
.cta-form{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:26px;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.82);margin-bottom:8px}
.field input{
  width:100%;height:48px;padding:0 15px;border-radius:var(--r-input);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);color:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.field input::placeholder{color:rgba(255,255,255,.42)}
.field input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.18)}
.field.invalid input{border-color:var(--c-hot)}
.field .err{display:none;font-size:13px;color:var(--c-hot);margin-top:7px}
.field.invalid .err{display:block}
.form-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px;line-height:1.6}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;
  background:rgba(194,245,60,.14);border:1px solid rgba(194,245,60,.4);
  color:var(--c-accent);font-size:14px;
}
.form-ok.show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-dark);color:rgba(255,255,255,.62);padding:72px 0 0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:330px;margin-bottom:18px}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-contact span{color:rgba(255,255,255,.86)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color var(--t),border-color var(--t)}
.footer-col a:hover{color:#fff;border-bottom:1px solid var(--c-accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .main-nav{gap:0}
  .nav-link{padding:10px 10px;font-size:14px}
  .cta-inner{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:992px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .hamburger{display:flex}
  .nav-actions .btn{display:none}
  .hero{padding:130px 0 76px;min-height:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-app-card{display:none}
  .hero-visual{min-height:280px}
  .hero h1{font-size:36px}
  .section{padding:72px 0}
  .sec-title{font-size:28px}
  .steps{grid-template-columns:1fr}
  .steps::after{display:none}
  .case-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .news-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-inner h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .trust-list{overflow-x:auto;justify-content:flex-start;scrollbar-width:none}
  .trust-list::-webkit-scrollbar{display:none}
  .trust-list li{flex:0 0 auto;justify-content:flex-start;padding:0 22px 0 0;border-right:none}
  .trust-list li:last-child{padding-right:0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .section{padding:56px 0}
  .sec-title{font-size:26px}
  .feature-band{padding:32px 22px}
  .feature-grid{grid-template-columns:1fr}
  .case-mini{grid-template-columns:1fr}
  .case-mini img{width:100%;height:150px}
  .news-item{grid-template-columns:84px 1fr}
  .news-item img{width:84px;height:66px}
  .hero-actions .btn{width:100%}
  .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-form{padding:20px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .hero h1{font-size:28px;letter-spacing:-.2px}
  body{font-size:15.5px}
  .hero{padding:118px 0 64px}
  .step-card,.case-lead-body,.news-lead-body{padding:18px}
  .metrics{padding:24px 18px}
  .metric strong{font-size:24px}
  .faq-q{min-height:52px;font-size:15px}
  .logo-text{font-size:15px}
}

/* roulang page: article */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --c-on-dark:#FFFFFF;
  --c-on-dark-2:rgba(255,255,255,.70);
  --radius-sm:10px;
  --radius:12px;
  --radius-card:16px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(23,18,42,.05);
  --shadow-md:0 16px 36px rgba(109,59,245,.14);
  --shadow-dark:0 8px 32px rgba(0,0,0,.28);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius);
  font-size:15px;font-weight:700;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-accent-ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,245,60,.35)}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:700;line-height:1;
}
.badge-purple{background:var(--c-primary-100);color:var(--c-primary)}
.badge-accent{background:var(--c-accent);color:var(--c-accent-ink)}
.badge-hot{background:var(--c-hot);color:#fff}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-dark);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.scrolled{
  background:rgba(12,8,25,.96);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .24s ease;
}
.site-header.scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#9B6BFF);
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(109,59,245,.45);
}
.logo-text{font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.logo-badge{
  display:inline-block;margin-left:6px;padding:2px 7px;border-radius:999px;
  background:var(--c-accent);color:var(--c-accent-ink);font-size:11px;font-weight:800;
  vertical-align:middle;letter-spacing:0;
}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;
  font-size:15px;color:rgba(255,255,255,.78);border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;
  background:var(--c-accent);transform:translateX(-50%);transition:width var(--ease);
}
.nav-link:hover,.nav-link.current{color:#fff}
.nav-link:hover::after,.nav-link.current::after{width:60%}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-toggle{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.16);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.search-toggle:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(194,245,60,.5)}
.search-box{
  position:absolute;top:100%;right:40px;width:320px;margin-top:12px;
  background:rgba(12,8,25,.98);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:14px;display:none;box-shadow:0 18px 40px rgba(0,0,0,.45);
}
.search-box.open{display:block}
.search-box input{
  width:100%;height:44px;padding:0 14px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#fff;outline:none;transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box input::placeholder{color:rgba(255,255,255,.45)}
.search-box input:focus{border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.16)}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;place-items:center;
  border:1px solid rgba(255,255,255,.16);color:#fff;
}
.menu-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:115;
  background:#0C0819;display:flex;flex-direction:column;
  padding:16px 24px 24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link:hover,.drawer-link.current{color:#fff}
.drawer-link .arw{color:var(--c-accent);font-size:15px}
.drawer-cta{margin-top:auto;padding-top:28px}
.drawer-cta .btn{width:100%}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;padding:146px 0 68px;color:#fff;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(12,8,25,.80),rgba(12,8,25,.96)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.62);transition:color var(--ease)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:3px}
.breadcrumb .sep{color:rgba(255,255,255,.3)}
.breadcrumb .current{color:rgba(255,255,255,.88);max-width:300px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-hero h1{
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.5px;
  color:#fff;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:22px;font-size:13px;color:rgba(255,255,255,.66);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{color:rgba(255,255,255,.3)}
.meta-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(194,245,60,.16);color:var(--c-accent);font-size:12px;font-weight:700;
}

/* ============ 正文布局 ============ */
.article-main{background:var(--c-light);padding:64px 0 96px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;
}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-lg);padding:44px;box-shadow:var(--shadow-sm);
}
.article-body{font-size:16.5px;line-height:1.85;color:var(--c-text-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;font-weight:700;
  color:var(--c-text);margin:40px 0 16px;padding-left:16px;letter-spacing:-.2px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.35em;width:4px;height:20px;
  border-radius:2px;background:var(--c-accent);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:700;color:var(--c-text);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:700;color:var(--c-text);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.15em}
.article-body li{position:relative;padding-left:24px;margin-bottom:10px}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.7em;width:8px;height:8px;
  border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:od}
.article-body ol > li{counter-increment:od}
.article-body ol > li::before{
  content:counter(od);position:absolute;left:0;top:0;
  color:var(--c-primary);font-weight:700;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:20px;border-left:4px solid var(--c-primary);
  background:var(--c-primary-100);border-radius:0 var(--radius) var(--radius) 0;
  color:var(--c-text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:24px 0}
.article-body img{border-radius:var(--radius);margin:0 auto}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;
}
.article-body th{
  background:var(--c-primary-100);color:var(--c-text);font-weight:600;
  text-align:left;padding:12px 14px;border:1px solid var(--c-line);
}
.article-body td{padding:12px 14px;border:1px solid var(--c-line);color:var(--c-text-2)}
.article-body tbody tr:nth-child(even){background:#FAF9FE}
.article-body a{
  color:var(--c-primary);border-bottom:1px solid rgba(109,59,245,.35);
  transition:border-color var(--ease),color var(--ease);
}
.article-body a:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-600)}
.article-body strong{color:var(--c-text);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--c-accent);
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto}
.toc-list a{
  display:block;padding:8px 12px;font-size:14px;line-height:1.5;
  color:var(--c-text-2);border-left:2px solid var(--c-line);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.toc-list a:hover{color:var(--c-primary);border-left-color:rgba(109,59,245,.4)}
.toc-list a.active{
  color:var(--c-primary);font-weight:700;background:var(--c-primary-100);
  border-left-color:var(--c-accent);
}
.reco-list{display:flex;flex-direction:column;gap:14px}
.reco-item{display:flex;gap:12px;align-items:flex-start}
.reco-item img{
  width:88px;height:66px;object-fit:cover;border-radius:10px;flex-shrink:0;
  transition:transform var(--ease);
}
.reco-item:hover img{transform:translateY(-2px)}
.reco-item .reco-title{
  font-size:14px;line-height:1.5;font-weight:600;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.reco-item .reco-sub{font-size:12px;color:var(--c-text-3);margin-top:4px}
.reco-item:hover .reco-title{color:var(--c-primary)}
.side-tip{
  background:linear-gradient(160deg,var(--c-dark) 0%,var(--c-dark-2) 100%);
  border:1px solid rgba(255,255,255,.1);color:#fff;
}
.side-tip h3{color:#fff}
.side-tip p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.7);margin-bottom:16px}

/* ============ 文末 ============ */
.article-foot{margin-top:40px;display:flex;flex-direction:column;gap:24px}
.foot-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.foot-link{
  display:flex;flex-direction:column;gap:6px;padding:20px;
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  background:var(--c-surface);box-shadow:var(--shadow-sm);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.foot-link:hover{border-color:rgba(109,59,245,.32);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.foot-link .fl-label{font-size:12px;color:var(--c-text-3);font-weight:600;letter-spacing:.5px}
.foot-link .fl-title{font-size:16px;font-weight:700;color:var(--c-text)}
.foot-link .fl-desc{font-size:13px;color:var(--c-text-2)}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;margin-top:56px;padding:56px 0;border-radius:var(--radius-lg);overflow:hidden;color:#fff;
  background:
    linear-gradient(180deg,rgba(12,8,25,.78),rgba(12,8,25,.94)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-copy h2{font-size:28px;line-height:1.35;color:#fff}
.cta-copy p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-shrink:0}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:72px 24px;border:1px dashed rgba(109,59,245,.32);
  border-radius:var(--radius-lg);background:var(--c-surface);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;display:grid;place-items:center;
  background:var(--c-primary-100);color:var(--c-primary);font-size:26px;font-weight:800;
}
.empty-state h2{font-size:22px;color:var(--c-text);margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:24px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-dark);color:#fff;padding:72px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:360px}
.footer-contact{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-contact span{color:#fff}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.62);
  transition:color var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
  border-top:1px solid rgba(255,255,255,.08);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar > *{flex:1 1 280px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:992px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .menu-toggle{display:grid}
  .search-toggle,.header-actions .btn{display:none}
  .search-box{right:24px;width:min(320px,calc(100vw - 48px))}
  .article-hero{padding:126px 0 56px}
  .article-hero h1{font-size:34px}
  .article-card{padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 0}
  .cta-copy h2{font-size:24px}
}
@media (max-width:768px){
  .article-hero{padding:118px 0 48px}
  .article-hero h1{font-size:28px;letter-spacing:-.3px}
  .article-main{padding:40px 0 64px}
  .article-card{padding:22px;border-radius:var(--radius-card)}
  .article-body{font-size:16px;line-height:1.8}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:18px}
  .foot-nav{grid-template-columns:1fr}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .article-hero{padding:110px 0 42px}
  .article-hero h1{font-size:25px}
  .article-card{padding:18px}
  .article-body{font-size:15.5px}
  .article-body table{font-size:14px}
  .breadcrumb .current{max-width:170px}
  .side-card{padding:16px}
}

/* roulang page: category1 */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --sh-card:0 2px 8px rgba(23,18,42,.05);
  --sh-hover:0 16px 36px rgba(109,59,245,.14);
  --sh-header:0 8px 32px rgba(0,0,0,.28);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
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,p{margin:0}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 40px;position:relative}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:992px){.container{padding:0 24px}}
@media (max-width:560px){.container{padding:0 18px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:var(--sh-header);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease,backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(12,8,25,.96);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .24s ease}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:-.2px;white-space:nowrap}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  color:var(--c-accent-ink);font-size:12px;font-weight:800;letter-spacing:.5px;
}
.logo-text{display:inline-flex;align-items:baseline}
.logo-badge{
  margin-left:6px;padding:1px 7px;border-radius:999px;
  background:rgba(194,245,60,.14);border:1px solid rgba(194,245,60,.42);
  color:var(--c-accent);font-size:11px;font-weight:600;
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 13px;border-radius:8px;
  font-size:15px;color:rgba(255,255,255,.78);
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;
  background:var(--c-accent);border-radius:2px;transform:translateX(-50%);
  transition:width var(--ease);
}
.nav-link:hover,.nav-link.current{color:#fff;background:rgba(255,255,255,.06)}
.nav-link:hover::after,.nav-link.current::after{width:60%}
.header-actions{display:flex;align-items:center;gap:10px;position:relative}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  color:rgba(255,255,255,.82);transition:background var(--ease),color var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.10);color:#fff}
.icon-btn svg{width:19px;height:19px}
.search-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:320px;
  padding:16px;border-radius:14px;
  background:rgba(12,8,25,.97);border:1px solid rgba(255,255,255,.12);
  box-shadow:0 18px 40px rgba(0,0,0,.4);
  display:none;
}
.search-panel.is-open{display:block}
.search-panel label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.7);margin-bottom:8px}
.search-row{display:flex;gap:8px}
.search-row input{
  flex:1;height:42px;padding:0 12px;border-radius:var(--r-input);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;
}
.search-row input::placeholder{color:rgba(255,255,255,.45)}
.search-row input:focus{border-color:var(--c-accent);outline:none;box-shadow:0 0 0 3px rgba(194,245,60,.18)}
.search-row button{
  padding:0 16px;height:42px;border-radius:var(--r-input);
  background:var(--c-accent);color:var(--c-accent-ink);font-weight:700;font-size:14px;
}
.menu-btn{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;color:#fff}
.menu-btn span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;position:relative;transition:transform .22s ease}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .22s ease,top .22s ease}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.menu-btn[aria-expanded="true"] span{background:transparent}
.menu-btn[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.menu-btn[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-accent-ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,245,60,.35)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{border:1px solid rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{border:1px solid var(--c-primary);color:var(--c-primary);background:#fff}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* drawer */
.drawer{
  position:fixed;inset:0;z-index:900;
  background:var(--c-dark);padding:96px 24px 32px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;overflow-y:auto;
  transition:opacity .24s ease,visibility .24s ease;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:rgba(255,255,255,.82);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link.current{color:var(--c-accent)}
.drawer-link i{color:rgba(255,255,255,.35);font-style:normal}
.drawer-cta{margin-top:28px;width:100%}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:152px 0 68px;
  background:linear-gradient(180deg,rgba(12,8,25,.80),rgba(12,8,25,.94)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.66);transition:color var(--ease)}
.crumbs a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.crumbs .sep{opacity:.45}
.crumbs .here{color:var(--c-text-3)}
.page-hero h1{
  font-size:46px;line-height:1.18;font-weight:800;letter-spacing:-.5px;
  max-width:820px;
}
.page-hero h1 em{font-style:normal;color:var(--c-accent)}
.hero-lead{
  margin-top:20px;max-width:720px;
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.72);
}
.tabs{display:flex;gap:10px;margin-top:32px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  padding:9px 18px;border-radius:999px;font-size:14px;white-space:nowrap;
  color:rgba(255,255,255,.76);border:1px solid rgba(255,255,255,.18);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.tab:hover{background:rgba(255,255,255,.08);color:#fff}
.tab.active{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-accent-ink);font-weight:700}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--c-light)}
@media (max-width:992px){.section{padding:72px 0}.page-hero{padding-top:132px}}
@media (max-width:768px){
  .section{padding:56px 0}
  .page-hero{padding:118px 0 52px}
  .page-hero h1{font-size:32px}
  .hero-lead{font-size:15px}
}
@media (max-width:560px){
  .page-hero h1{font-size:28px}
}
.section-head{max-width:780px;margin:0 auto 40px;text-align:center}
.section-head h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.3px}
.section-head h2::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:2px;
  background:var(--c-accent);margin-right:12px;vertical-align:-1px;
}
.section-head .section-sub{margin-top:16px;font-size:15.5px;color:var(--c-text-2)}
@media (max-width:768px){.section-head h2{font-size:26px}}
.eyebrow{
  display:inline-block;margin-bottom:16px;padding:5px 14px;border-radius:999px;
  background:var(--c-primary-100);color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.04em;
}
.section-alt .eyebrow{background:#fff}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media (max-width:992px){.split{grid-template-columns:1fr;gap:36px}}
.split-figure{position:relative}
.split-figure img{width:100%;border-radius:var(--r-card);box-shadow:0 18px 40px rgba(23,18,42,.13)}
.split-figure::after{
  content:"";position:absolute;left:-14px;top:-14px;width:72px;height:72px;
  border-radius:14px;border-top:2px solid var(--c-accent);border-left:2px solid var(--c-accent);
  opacity:.7;pointer-events:none;
}
.figure-note{margin-top:14px;font-size:13px;color:var(--c-text-3);line-height:1.6}
.split-body h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px;margin-bottom:16px}
.split-body h2::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:2px;
  background:var(--c-accent);margin-right:12px;vertical-align:-1px;
}
.split-body p{color:var(--c-text-2);font-size:16px;line-height:1.8}
@media (max-width:768px){.split-body h2{font-size:25px}}
.check-list{margin:22px 0 26px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:24px;font-size:15px;color:var(--c-text-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:var(--c-accent);box-shadow:0 0 0 3px rgba(194,245,60,.22);
}

/* table */
.table-wrap{
  overflow-x:auto;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
}
table{width:100%;border-collapse:collapse;min-width:780px;font-variant-numeric:tabular-nums}
th{
  background:var(--c-primary-100);color:var(--c-text);
  font-size:14px;font-weight:700;text-align:left;padding:16px 22px;white-space:nowrap;
}
td{padding:17px 22px;font-size:15px;color:var(--c-text-2);border-top:1px solid var(--c-line)}
td strong{color:var(--c-text);font-weight:600}
tbody tr:nth-child(even){background:#FAF9FE}
tbody tr:hover{background:#F3F0FD}
@media (max-width:560px){
  .table-wrap{border:0;background:transparent;box-shadow:none;overflow:visible}
  table{min-width:0;display:block}
  thead{display:none}
  tbody{display:block}
  tbody tr{
    display:block;background:#fff;border:1px solid var(--c-line);
    border-radius:14px;margin-bottom:14px;padding:6px 2px;
  }
  tbody tr:nth-child(even){background:#fff}
  tbody tr:hover{background:#fff}
  td{display:flex;gap:14px;border:0;padding:10px 16px;font-size:14.5px}
  td::before{content:attr(data-label);flex:0 0 78px;color:var(--c-text-3);font-size:13px}
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
@media (max-width:992px){.steps{grid-template-columns:1fr}}
.steps::before{
  content:"";position:absolute;top:48px;left:12%;right:12%;
  border-top:1px dashed rgba(109,59,245,.28);pointer-events:none;
}
@media (max-width:992px){.steps::before{display:none}}
.step{
  position:relative;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px 28px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-hover)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-accent);color:var(--c-accent-ink);
  font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;
  margin-bottom:18px;position:relative;z-index:1;
}
.step h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px}
.step p{font-size:15px;line-height:1.75;color:var(--c-text-2)}
.step-meta{margin-top:16px;font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:8px}
.step-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;font-style:normal}

/* faq */
.faq{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(109,59,245,.28)}
.faq-item.is-open{border-color:rgba(109,59,245,.34);box-shadow:0 12px 28px rgba(109,59,245,.10)}
.faq-q{
  width:100%;min-height:56px;padding:15px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;font-size:16px;font-weight:600;line-height:1.5;color:var(--c-text);
}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:var(--c-primary-100);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;
  transition:transform .26s ease,background var(--ease),color var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-accent);color:var(--c-accent-ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
@media (max-width:560px){.faq-q{min-height:52px;font-size:15px;padding:13px 16px}.faq-a p{padding:0 16px 18px}}

/* cta */
.cta-band{
  position:relative;overflow:hidden;color:#fff;padding:76px 0;
  background:linear-gradient(180deg,rgba(12,8,25,.84),rgba(12,8,25,.96)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px;margin-bottom:14px}
.cta-inner h2::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:2px;
  background:var(--c-accent);margin-right:12px;vertical-align:-1px;
}
.cta-inner p{font-size:15.5px;color:rgba(255,255,255,.72);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:768px){
  .cta-band{padding:56px 0}
  .cta-inner h2{font-size:25px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* footer */
.site-footer{position:relative;background:var(--c-dark);color:#fff;padding:72px 0 0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
@media (max-width:992px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:420px}
.footer-contact{margin-top:18px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-contact span{color:rgba(255,255,255,.82)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
@media (max-width:992px){
  .main-nav,.header-actions .btn-sm,.icon-btn{display:none}
  .menu-btn{display:inline-flex}
}

/* roulang page: category2 */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --c-on-dark:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 2px 8px rgba(23,18,42,.05);
  --sh-hover:0 16px 36px rgba(109,59,245,.14);
  --sh-btn:0 10px 24px rgba(194,245,60,.35);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
  --t:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary);color:#fff;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:104px 0;}
.section--light{background:var(--c-light);}
.section--tight{padding:80px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-primary-100);
  color:var(--c-primary-600);
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:14px;
}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:34px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.3px;
  color:var(--c-text);
  margin-bottom:16px;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  width:4px;
  height:20px;
  border-radius:2px;
  background:var(--c-accent);
}
.sec-desc{font-size:16px;color:var(--c-text-2);max-width:700px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-accent);color:var(--c-accent-ink);box-shadow:0 6px 16px rgba(194,245,60,.22);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-btn);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.28);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-2px);}
.btn-outline{
  background:transparent;
  color:var(--c-primary-600);
  border:1px solid var(--c-primary);
}
.btn-outline:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
  transition:background 240ms ease,box-shadow 240ms ease,border-color 240ms ease;
}
.site-header.scrolled{
  background:rgba(12,8,25,.96);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height 240ms ease;
}
.site-header.scrolled .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),#9A6BFF);
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:.5px;
}
.logo-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  color:#fff;
}
.logo-badge{
  display:inline-block;
  padding:1px 7px;
  border-radius:var(--r-pill);
  background:var(--c-accent);
  color:var(--c-accent-ink);
  font-size:11px;
  font-weight:700;
  line-height:1.6;
}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:rgba(255,255,255,.78);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:20%;right:20%;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform var(--t);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after,.nav-link.current::after{transform:scaleX(1);}
.nav-link.current{color:#fff;font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.16);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.icon-btn:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.3);}
.header-cta{height:40px;padding:0 20px;font-size:14px;}
.search-panel{
  position:absolute;
  top:calc(100% + 10px);
  right:40px;
  width:320px;
  padding:12px;
  border-radius:14px;
  background:rgba(21,14,43,.98);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
  display:none;
}
.search-panel.open{display:block;}
.search-panel input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-input);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  color:#fff;
  outline:none;
}
.search-panel input::placeholder{color:rgba(255,255,255,.42);}
.search-panel input:focus{border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.18);}
.nav-toggle{display:none;}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:var(--c-dark);
  padding:20px 22px 32px;
  display:flex;
  flex-direction:column;
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:opacity 220ms ease,transform 220ms ease,visibility 220ms;
  overflow-y:auto;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.1);}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  color:#fff;
  border:1px solid rgba(255,255,255,.18);
}
.drawer-nav{display:flex;flex-direction:column;margin:10px 0 24px;}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  font-size:18px;
  color:rgba(255,255,255,.8);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer-link.current{color:#fff;font-weight:600;}
.drawer-link i{font-size:13px;color:rgba(255,255,255,.35);}
.drawer-cta{width:100%;margin-top:auto;}

/* ============ 页面 Banner ============ */
.page-hero{
  position:relative;
  padding:150px 0 56px;
  background:
    linear-gradient(180deg,rgba(12,8,25,.82),rgba(12,8,25,.95)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-160px;top:-120px;
  width:520px;height:520px;
  background:linear-gradient(140deg,rgba(109,59,245,.55),rgba(194,245,60,.16));
  filter:blur(6px);
  transform:rotate(24deg);
  opacity:.5;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.8);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--c-accent);}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.breadcrumb .current{color:rgba(255,255,255,.6);}
.page-hero h1{
  font-size:46px;
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.5px;
  color:#fff;
  margin-bottom:14px;
}
.page-hero-lead{
  max-width:720px;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
}
.anchor-tabs{
  display:flex;
  gap:10px;
  margin-top:28px;
  overflow-x:auto;
  padding-bottom:4px;
  scrollbar-width:none;
}
.anchor-tabs::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;
  padding:8px 18px;
  border-radius:var(--r-pill);
  font-size:14px;
  color:rgba(255,255,255,.78);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.pill:hover{background:rgba(255,255,255,.12);color:#fff;}
.pill.current{background:var(--c-accent);color:var(--c-accent-ink);border-color:var(--c-accent);font-weight:700;}

/* ============ 功能矩阵 ============ */
.matrix{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.module-card{
  position:relative;
  padding:24px 20px 22px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.module-card::before{
  content:"";
  position:absolute;
  left:20px;top:0;
  width:26px;height:2px;
  border-radius:0 0 2px 2px;
  background:var(--c-accent);
}
.module-card:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.32);box-shadow:var(--sh-hover);}
.module-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--c-primary-100);
  color:var(--c-primary-600);
  font-size:17px;
  margin-bottom:16px;
}
.module-card h3{font-size:17px;line-height:1.45;font-weight:600;color:var(--c-text);margin-bottom:8px;}
.module-card p{font-size:15px;line-height:1.7;color:var(--c-text-2);}
.module-meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:14px;
  font-size:13px;
  color:var(--c-text-3);
}
.badge{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.badge-purple{background:var(--c-primary-100);color:var(--c-primary-600);}
.badge-lime{background:var(--c-accent);color:var(--c-accent-ink);}
.badge-hot{background:var(--c-hot);color:#fff;}

/* ============ 图文交替 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:88px;}
.split-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);transition:transform 360ms ease;}
.split-media:hover img{transform:scale(1.03);}
.split--reverse .split-media{order:2;}
.split-body h3{font-size:24px;line-height:1.4;font-weight:700;color:var(--c-text);margin-bottom:14px;}
.split-body > p{font-size:16px;line-height:1.8;color:var(--c-text-2);}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  line-height:1.7;
  color:var(--c-text-2);
}
.check-list li i{
  margin-top:5px;
  flex:0 0 auto;
  width:18px;height:18px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--c-accent);
  color:var(--c-accent-ink);
  font-size:10px;
}
.split-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 对比表 ============ */
.table-wrap{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  box-shadow:var(--sh-card);
  overflow:hidden;
}
table.compare{width:100%;border-collapse:collapse;font-size:15px;}
table.compare caption{
  text-align:left;
  padding:20px 24px 4px;
  font-size:13px;
  color:var(--c-text-3);
}
table.compare thead th{
  background:var(--c-primary-100);
  color:var(--c-primary-600);
  font-size:14px;
  font-weight:700;
  text-align:left;
  padding:16px 24px;
  white-space:nowrap;
}
table.compare tbody td{
  padding:16px 24px;
  border-top:1px solid var(--c-line);
  color:var(--c-text-2);
  vertical-align:top;
}
table.compare tbody td:first-child{color:var(--c-text);font-weight:600;}
table.compare tbody tr:nth-child(even){background:#FBFAFE;}
table.compare tbody tr:hover{background:#F6F2FF;}

/* ============ 组合建议 ============ */
.combo{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:32px;
  align-items:start;
}
.combo-list{display:grid;gap:16px;}
.combo-item{
  display:flex;
  gap:16px;
  padding:20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.combo-item:hover{border-color:rgba(109,59,245,.32);transform:translateY(-4px);box-shadow:var(--sh-hover);}
.combo-num{
  flex:0 0 auto;
  font-size:22px;
  font-weight:800;
  line-height:1.2;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.combo-item h3{font-size:17px;font-weight:600;color:var(--c-text);margin-bottom:6px;}
.combo-item p{font-size:15px;line-height:1.7;color:var(--c-text-2);}
.stat-card{
  padding:28px;
  border-radius:20px;
  background:
    linear-gradient(180deg,rgba(12,8,25,.86),rgba(12,8,25,.96)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  color:#fff;
  border:1px solid rgba(255,255,255,.1);
}
.stat-card h3{font-size:19px;font-weight:700;color:#fff;margin-bottom:6px;}
.stat-card > p{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:22px;}
.stat-list{display:grid;gap:16px;}
.stat-item{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.1);}
.stat-item:last-child{border-bottom:none;padding-bottom:0;}
.stat-value{font-size:26px;font-weight:800;color:var(--c-accent);letter-spacing:-.5px;font-variant-numeric:tabular-nums;}
.stat-label{font-size:14px;color:rgba(255,255,255,.72);}
.stat-card .btn{width:100%;margin-top:24px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  padding:88px 0;
  background:
    linear-gradient(180deg,rgba(12,8,25,.88),rgba(12,8,25,.96)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.6;
  pointer-events:none;
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.cta-grid h2{
  font-size:34px;
  line-height:1.28;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.cta-grid .cta-lead{font-size:16px;line-height:1.8;color:rgba(255,255,255,.72);max-width:520px;}
.cta-form{
  padding:26px;
  border-radius:20px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  display:grid;
  gap:16px;
}
.field{display:grid;gap:8px;}
.field label{font-size:13px;font-weight:600;color:rgba(255,255,255,.82);}
.field input{
  height:48px;
  padding:0 15px;
  border-radius:var(--r-input);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;
  outline:none;
  transition:border-color var(--t),box-shadow var(--t);
}
.field input::placeholder{color:rgba(255,255,255,.42);}
.field input:focus{border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.2);}
.form-hint{font-size:13px;color:rgba(255,255,255,.55);}
.form-error{font-size:13px;color:var(--c-hot);display:none;}
.field.invalid input{border-color:var(--c-hot);}
.field.invalid .form-error{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--c-dark);
  color:rgba(255,255,255,.62);
  padding-top:72px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-contact{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-contact span{color:rgba(255,255,255,.86);}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);border-bottom:1px solid transparent;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--c-accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{padding:0 32px;}
  .combo{grid-template-columns:1fr;}
}
@media (max-width:992px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .main-nav,.header-actions .icon-btn,.header-cta{display:none;}
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;height:44px;
    border-radius:10px;
    color:#fff;
    border:1px solid rgba(255,255,255,.2);
  }
  .matrix{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split--reverse .split-media{order:0;}
  .split + .split{margin-top:56px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .page-hero h1{font-size:38px;}
  .search-panel{right:24px;width:min(320px,calc(100vw - 48px));}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .sec-title{font-size:26px;}
  .page-hero{padding:132px 0 48px;}
  .page-hero h1{font-size:32px;}
  .matrix{grid-template-columns:1fr;}
  .module-card{padding:20px 18px;}
  .btn{width:100%;}
  .split-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-grid h2{font-size:26px;}
  .stat-card .btn{width:100%;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  .page-hero h1{font-size:28px;}
  .page-hero-lead{font-size:15px;}
  body{font-size:15.5px;}
  .table-wrap{overflow-x:auto;}
  table.compare{min-width:560px;}
  .header-inner{height:64px;}
}

/* roulang page: category3 */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --sh-card:0 2px 8px rgba(23,18,42,.05);
  --sh-card-hover:0 16px 36px rgba(109,59,245,.14);
  --pad-x:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.2px}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 var(--pad-x);width:100%}
.section{padding:96px 0}
.section-light{background:var(--c-light)}
.section-dark{background:var(--c-dark);color:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .tag-line{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--c-primary);background:var(--c-primary-100);padding:5px 12px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:34px;font-weight:700;margin-bottom:16px;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:8px;width:4px;height:20px;border-radius:2px;background:var(--c-accent)}
.section-head p{color:var(--c-text-2);font-size:15px;margin:0}
.mono{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:var(--c-accent-ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,245,60,.35)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-block{width:100%}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:72px;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
  transition:height .24s ease,background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.scrolled{
  height:64px;
  background:rgba(12,8,25,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.header-inner{display:flex;align-items:center;height:100%;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#8C63FF);
  font-size:12px;font-weight:800;letter-spacing:.5px;color:#fff;flex:0 0 auto;
}
.logo-text{letter-spacing:-.2px;white-space:nowrap}
.logo-badge{
  margin-left:6px;font-size:11px;font-weight:600;
  background:var(--c-accent);color:var(--c-accent-ink);
  padding:2px 7px;border-radius:999px;vertical-align:2px;
}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 2px;font-size:15px;
  color:rgba(255,255,255,.78);transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;
  background:var(--c-accent);border-radius:2px;transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after,.nav-link.current::after{transform:scaleX(1)}
.nav-link.current{color:#fff;font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);display:grid;place-items:center;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.32)}
.icon-btn svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round}
.hamburger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:#fff}
.search-panel{
  max-height:0;overflow:hidden;background:rgba(12,8,25,.97);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:max-height .28s ease;
}
.search-panel.open{max-height:140px}
.search-inner{display:flex;gap:12px;padding:18px 0;align-items:center}
.search-inner input{
  flex:0 1 360px;height:44px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-inner input::placeholder{color:rgba(255,255,255,.45)}
.search-inner input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.16)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);
  display:flex;flex-direction:column;padding:20px;
  transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.10)}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:22px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a::after{content:"›";color:rgba(255,255,255,.35);font-size:22px}
.drawer-nav a.current{color:var(--c-accent)}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-foot .btn{width:100%}
body.no-scroll{overflow:hidden}

/* ---------- 页面 Banner ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:158px 0 64px;
  background:var(--c-dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,8,25,.80),rgba(12,8,25,.94));
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:520px;height:520px;
  background:linear-gradient(135deg,rgba(109,59,245,.42),rgba(194,245,60,.18));
  transform:rotate(22deg);filter:blur(20px);opacity:.55;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.60);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.breadcrumb .sep{color:rgba(255,255,255,.32)}
.breadcrumb .current{color:rgba(255,255,255,.55)}
.page-hero h1{
  font-size:46px;font-weight:800;letter-spacing:-.5px;line-height:1.18;
  max-width:820px;margin-bottom:18px;
}
.hero-lead{
  max-width:720px;font-size:16px;color:rgba(255,255,255,.72);margin:0 0 28px;
}
.anchor-tabs{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:none;
}
.anchor-tabs::-webkit-scrollbar{height:0}
.tab{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.78);
  font-size:14px;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{background:rgba(255,255,255,.10);color:#fff}
.tab.current{background:var(--c-accent);color:var(--c-accent-ink);border-color:transparent;font-weight:700}

/* ---------- 文档双栏 ---------- */
.doc-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;align-items:start}
.doc-side{position:sticky;top:96px}
.doc-side h3{
  font-size:13px;letter-spacing:1px;color:var(--c-text-3);
  font-weight:700;margin-bottom:12px;text-transform:uppercase;
}
.doc-side ul{list-style:none;margin:0;padding:0}
.doc-side li{margin-bottom:4px}
.doc-side a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;
  color:var(--c-text-2);border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.doc-side a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.doc-side a.active{
  background:var(--c-primary-100);color:var(--c-primary);
  font-weight:600;border-left-color:var(--c-accent);
}
.doc-body{max-width:820px}
.doc-section{padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--c-line)}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-section h2{
  font-size:26px;font-weight:700;margin-bottom:16px;
  position:relative;padding-left:16px;scroll-margin-top:96px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:7px;width:4px;height:20px;
  border-radius:2px;background:var(--c-accent);
}
.doc-section h3{font-size:18px;font-weight:700;margin:26px 0 10px}
.doc-section p{color:var(--c-text-2);font-size:16px;line-height:1.85}
.doc-section ul,.doc-section ol{color:var(--c-text-2);font-size:15.5px;line-height:1.85}
.doc-section ul{list-style:none;padding-left:0}
.doc-section ul li{position:relative;padding-left:20px;margin-bottom:8px}
.doc-section ul li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--c-accent);
}
.doc-section ol{padding-left:1.3em}
.doc-section ol li{margin-bottom:8px}
.doc-section ol li::marker{color:var(--c-primary);font-weight:700}
.note{
  border-left:4px solid var(--c-primary);background:var(--c-primary-100);
  padding:18px 20px;border-radius:0 var(--r-img) var(--r-img) 0;
  font-size:15px;color:var(--c-text-2);margin:22px 0;
}
.note strong{color:var(--c-text)}
.figure{margin:24px 0}
.figure figcaption{
  font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px;
}
.table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--c-line);border-radius:var(--r-card)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
thead th{
  background:var(--c-primary-100);color:var(--c-text);
  font-size:14px;font-weight:700;text-align:left;padding:14px 18px;
}
tbody td{padding:14px 18px;border-top:1px solid var(--c-line);color:var(--c-text-2)}
tbody tr:nth-child(even){background:#FBFAFE}
tbody td:first-child{color:var(--c-text);font-weight:600}

/* ---------- 承诺卡 ---------- */
.pledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pledge{
  background:#fff;border:1px solid rgba(194,245,60,.55);border-radius:var(--r-card);
  padding:26px 22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pledge:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover);border-color:var(--c-accent)}
.pledge .pledge-no{
  font-size:26px;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;margin-bottom:10px;
}
.pledge h3{font-size:18px;margin-bottom:10px}
.pledge p{font-size:15px;color:var(--c-text-2);margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(109,59,245,.32);box-shadow:0 12px 30px rgba(109,59,245,.10)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 20px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;line-height:1.5;
}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--c-primary-100);color:var(--c-primary);
  display:grid;place-items:center;font-size:18px;line-height:1;
  transition:transform .26s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:var(--c-dark) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:76px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,8,25,.86),rgba(12,8,25,.94));
}
.cta-band .container{position:relative;z-index:2}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:32px;font-weight:700;margin-bottom:12px;max-width:600px}
.cta-inner p{margin:0;color:rgba(255,255,255,.72);font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--c-dark);color:rgba(255,255,255,.62);
  padding-top:72px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:56px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);
  margin:0 0 16px;max-width:380px;
}
.footer-contact{font-size:13px;line-height:1.9;color:rgba(255,255,255,.48)}
.footer-contact span{color:rgba(255,255,255,.82)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .doc-layout{grid-template-columns:200px minmax(0,1fr);gap:36px}
  .doc-body{max-width:none}
}
@media (max-width:992px){
  :root{--pad-x:24px}
  .section{padding:72px 0}
  .main-nav{display:none}
  .hamburger{display:flex}
  .header-actions{margin-left:auto}
  .page-hero{padding:130px 0 52px}
  .page-hero h1{font-size:34px}
  .doc-layout{grid-template-columns:1fr;gap:28px}
  .doc-side{position:static;border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px}
  .doc-side ul{display:flex;flex-wrap:wrap;gap:8px}
  .doc-side li{margin:0}
  .doc-side a{border-left:0;border:1px solid var(--c-line);border-radius:999px;padding:7px 14px;font-size:13px}
  .doc-side a.active{border-color:var(--c-primary)}
  .pledge-grid{grid-template-columns:1fr 1fr}
  .section-head h2{font-size:28px}
  .cta-inner h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .page-hero{padding:118px 0 44px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15px}
  .doc-section h2{font-size:22px}
  .doc-section{padding-bottom:34px;margin-bottom:34px}
  .pledge-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .search-inner{flex-wrap:wrap}
  .search-inner input{flex:1 1 100%}
}
@media (max-width:560px){
  :root{--pad-x:18px}
  .page-hero h1{font-size:27px;letter-spacing:-.3px}
  .section-head h2{font-size:24px}
  .doc-section p,.doc-section ul,.doc-section ol{font-size:15.5px}
  .btn{height:46px;padding:0 20px}
  .faq-q{min-height:52px;font-size:15px}
  .logo-text{font-size:15px}
  .icon-btn{display:none}
}

/* roulang page: category4 */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 2px 8px rgba(23,18,42,.05);
  --shadow-hover:0 16px 36px rgba(109,59,245,.14);
  --container:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
h1,h2,h3,h4{color:var(--c-text);margin:0;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section-light{background:var(--c-light);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:34px;
  font-weight:700;
  letter-spacing:-.3px;
  position:relative;
  padding-left:16px;
  margin-bottom:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:4px;height:20px;
  border-radius:2px;
  background:var(--c-accent);
}
.section-head p{font-size:16px;color:var(--c-text-2);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--c-primary);
  background:var(--c-primary-100);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:14px;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  height:72px;
  background:rgba(12,8,25,.45);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
  transition:height .24s ease,background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.scrolled{
  height:64px;
  background:rgba(12,8,25,.96);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;
  border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#8B5CFF);
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(109,59,245,.35);
}
.logo-text{
  font-size:17px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.logo-badge{
  font-size:11px;
  font-weight:600;
  padding:2px 7px;
  border-radius:999px;
  background:var(--c-accent);
  color:var(--c-accent-ink);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  height:100%;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:100%;
  padding:0 12px;
  font-size:15px;
  color:rgba(255,255,255,.78);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:16px;
  width:0;height:2px;
  background:var(--c-accent);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width .24s ease;
}
.nav-link:hover,.nav-link.current{color:#fff;}
.nav-link:hover::after,.nav-link.current::after{width:60%;}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.icon-btn{
  width:40px;height:40px;
  border-radius:10px;
  display:grid;place-items:center;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.16);
  transition:background var(--ease),color var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.1);color:#fff;}
.icon-btn svg{width:18px;height:18px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-accent);
  color:var(--c-accent-ink);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(194,245,60,.35);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.08);}
.btn-outline{
  border:1px solid var(--c-primary);
  color:var(--c-primary);
  background:transparent;
}
.btn-outline:hover{background:var(--c-primary);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.hamburger{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.16);
  place-items:center;
}
.hamburger span{
  display:block;
  width:18px;height:2px;
  background:#fff;
  border-radius:2px;
  position:relative;
}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;
  width:18px;height:2px;background:#fff;border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* header search panel */
.search-panel{
  position:absolute;
  top:100%;right:40px;
  width:360px;
  padding:16px;
  background:rgba(12,8,25,.97);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  box-shadow:0 24px 48px rgba(0,0,0,.45);
  opacity:0;visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.search-panel.open{opacity:1;visibility:visible;transform:translateY(8px);}
.search-panel form{display:flex;gap:8px;}
.search-panel input{
  flex:1;
  height:42px;
  border-radius:10px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  color:#fff;
  padding:0 14px;
  font-size:14px;
}
.search-panel input::placeholder{color:rgba(255,255,255,.45);}
.search-panel input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(194,245,60,.18);}

/* mobile drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:#0C0819;
  padding:88px 24px 32px;
  display:flex;
  flex-direction:column;
  gap:4px;
  transform:translateY(-100%);
  visibility:hidden;
  transition:transform .3s ease,visibility .3s ease;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);visibility:visible;}
.drawer-close{
  position:absolute;
  top:20px;right:24px;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  color:#fff;
  display:grid;place-items:center;
}
.drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  font-size:18px;
  color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer a.current{color:#fff;}
.drawer a::after{content:"›";color:var(--c-accent);font-size:20px;}
.drawer .btn{margin-top:24px;width:100%;}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 60px;
  color:#fff;
  background:linear-gradient(180deg,rgba(12,8,25,.80),rgba(12,8,25,.95)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--c-accent);}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.page-hero h1{
  color:#fff;
  font-size:46px;
  font-weight:800;
  letter-spacing:-.5px;
  line-height:1.18;
  margin-bottom:16px;
}
.page-hero-lead{
  max-width:720px;
  font-size:16px;
  color:rgba(255,255,255,.72);
  margin-bottom:28px;
}
.anchor-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.anchor-tabs a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  font-size:14px;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);
}
.anchor-tabs a:hover{background:rgba(255,255,255,.1);color:#fff;}
.anchor-tabs a.current{
  background:var(--c-accent);
  color:var(--c-accent-ink);
  border-color:transparent;
  font-weight:700;
}

/* ---------- Search block ---------- */
.search-block{
  margin-top:-28px;
  position:relative;
  z-index:5;
}
.search-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:0 18px 40px rgba(23,18,42,.10);
  padding:28px 32px;
}
.search-form{
  display:flex;
  gap:12px;
}
.search-form input{
  flex:1;
  height:48px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  padding:0 16px;
  font-size:15px;
  color:var(--c-text);
  background:var(--c-surface);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-form input::placeholder{color:var(--c-text-3);}
.search-form input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(109,59,245,.12);
}
.hot-words{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:18px;
  font-size:13px;
  color:var(--c-text-3);
}
.hot-words a{
  padding:5px 12px;
  border-radius:999px;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
}
.hot-words a:hover{background:var(--c-primary);color:#fff;}

/* ---------- Topic cards ---------- */
.topic-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.topic-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  position:relative;
}
.topic-card::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:44px;height:3px;
  background:var(--c-accent);
  border-radius:0 0 3px 0;
}
.topic-card:hover{
  transform:translateY(-4px);
  border-color:rgba(109,59,245,.32);
  box-shadow:var(--shadow-hover);
}
.topic-card img{
  width:100%;
  height:168px;
  object-fit:cover;
  border-radius:0;
}
.topic-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.topic-body h3{font-size:18px;font-weight:600;line-height:1.45;}
.topic-body p{font-size:15px;color:var(--c-text-2);flex:1;}
.tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  padding:4px 10px;
  border-radius:999px;
  background:var(--c-primary-100);
  color:var(--c-primary);
  align-self:flex-start;
}
.tag-accent{background:var(--c-accent);color:var(--c-accent-ink);}
.topic-link{
  font-size:14px;
  font-weight:700;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.topic-link:hover{color:var(--c-primary-600);}
.topic-link::after{content:"→";transition:transform var(--ease);}
.topic-link:hover::after{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.open{
  border-color:rgba(109,59,245,.32);
  box-shadow:0 10px 26px rgba(109,59,245,.10);
}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  background:none;
}
.faq-q .plus{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:999px;
  display:grid;place-items:center;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:16px;
  font-weight:700;
  transition:transform .26s ease,background var(--ease),color var(--ease);
}
.faq-item.open .plus{
  transform:rotate(45deg);
  background:var(--c-accent);
  color:var(--c-accent-ink);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease;
}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text-2);
}

/* ---------- Form ---------- */
.form-card{
  max-width:860px;
  margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  padding:32px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;}
.field label{font-size:13px;font-weight:600;color:var(--c-text);}
.field input,.field textarea{
  width:100%;
  height:48px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  padding:0 14px;
  font-size:15px;
  color:var(--c-text);
  background:var(--c-surface);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{
  height:140px;
  padding:12px 14px;
  resize:vertical;
  line-height:1.7;
}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(109,59,245,.12);
}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:14px;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  padding:80px 0;
  color:#fff;
  background:linear-gradient(180deg,rgba(12,8,25,.84),rgba(12,8,25,.95)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-inner h2{color:#fff;font-size:34px;font-weight:700;margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.72);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-dark);
  color:rgba(255,255,255,.62);
  position:relative;
  padding-top:72px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
  margin:18px 0;
  max-width:360px;
}
.footer-contact{font-size:14px;color:rgba(255,255,255,.62);line-height:1.9;}
.footer-contact span{color:rgba(255,255,255,.85);}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.62);
  border-bottom:1px solid transparent;
}
.footer-col a:hover{color:#fff;border-bottom-color:var(--c-accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  justify-content:space-between;
  padding:22px 0;
  font-size:13px;
  color:rgba(255,255,255,.5);
  border-top:1px solid rgba(255,255,255,.08);
}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 32px;}
  .search-panel{right:32px;}
}
@media (max-width:992px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .hamburger{display:grid;}
  .header-actions .btn-sm{display:none;}
  .section{padding:72px 0;}
  .section-head h2{font-size:28px;}
  .page-hero{padding:132px 0 52px;}
  .page-hero h1{font-size:36px;}
  .topic-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-inner h2{font-size:28px;}
  .search-panel{right:24px;left:24px;width:auto;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .page-hero h1{font-size:30px;}
  .page-hero-lead{font-size:15px;}
  .topic-grid{grid-template-columns:1fr;}
  .search-card{padding:20px;}
  .search-form{flex-direction:column;}
  .search-form .btn{width:100%;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  .page-hero{padding:120px 0 44px;}
  .page-hero h1{font-size:27px;}
  .logo-text{font-size:15px;}
  .faq-q{min-height:52px;font-size:15px;padding:12px 16px;}
  .faq-a p{padding:0 16px 16px;}
  .topic-body{padding:18px;}
  .section-head h2{font-size:23px;}
}

/* roulang page: category5 */
:root{
  --c-dark:#0C0819;
  --c-dark-2:#150E2B;
  --c-primary:#6D3BF5;
  --c-primary-600:#5A27E0;
  --c-primary-100:#EDE7FE;
  --c-accent:#C2F53C;
  --c-accent-ink:#1B2400;
  --c-hot:#FF5F7E;
  --c-light:#F5F3FA;
  --c-surface:#FFFFFF;
  --c-line:#E7E3F2;
  --c-text:#17122A;
  --c-text-2:#5C5575;
  --c-text-3:#8B849E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 2px 8px rgba(23,18,42,.05);
  --shadow-card-hover:0 16px 36px rgba(109,59,245,.14);
  --t:240ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;line-height:1.3}
p{margin:0}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;white-space:nowrap;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-accent);color:var(--c-accent-ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,245,60,.35)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  height:76px;display:flex;align-items:center;
  background:rgba(12,8,25,.45);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
  transition:height var(--t),background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-fixed{
  position:fixed;height:64px;
  background:rgba(12,8,25,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(12,8,25,.35);
}
.header-inner{display:flex;align-items:center;gap:28px;height:100%}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.2px}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#9A6BFF);
  color:#fff;font-size:12px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(109,59,245,.45);
}
.logo-text{display:inline-flex;align-items:center;gap:8px}
.logo-badge{
  font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;
  background:var(--c-accent);color:var(--c-accent-ink);
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;
  color:rgba(255,255,255,.78);transition:color .2s ease;
}
.nav-link:hover,.nav-link.current{color:#fff}
.nav-link::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-link:hover::after,.nav-link.current::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;
  transition:background var(--t),border-color var(--t);
}
.icon-btn:hover{background:rgba(255,255,255,.14)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;place-items:center;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;margin:3px 0}

.header-search{
  position:absolute;top:100%;left:0;right:0;display:none;padding:18px 0;
  background:rgba(12,8,25,.98);border-bottom:1px solid rgba(255,255,255,.1);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.header-search.open{display:block}
.search-form{display:flex;gap:12px;max-width:720px;margin:0 auto}
.search-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:15px;
}
.search-form input::placeholder{color:rgba(255,255,255,.45)}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(194,245,60,.16)}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;
  padding:22px;background:var(--c-dark);overflow-y:auto;
  transform:translateX(100%);opacity:0;pointer-events:none;
  transition:transform .3s ease,opacity .3s ease;
}
.mobile-drawer.open{transform:translateX(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a.current{color:#fff;font-weight:700}
.drawer-nav a .arrow{color:var(--c-accent);font-size:16px}
.drawer-cta{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.drawer-cta .btn{width:100%}

/* ---------- 页头 banner ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:142px 0 58px;
  background:var(--c-dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,8,25,.78),rgba(12,8,25,.96));
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-hero .glow{
  position:absolute;right:-90px;top:-120px;width:540px;height:540px;pointer-events:none;
  background:radial-gradient(circle at 35% 35%,rgba(109,59,245,.55),transparent 62%),
             radial-gradient(circle at 68% 72%,rgba(194,245,60,.26),transparent 60%);
  filter:blur(22px);opacity:.75;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.66);transition:color .2s ease}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.breadcrumb .sep{color:rgba(255,255,255,.36)}
.breadcrumb .current{color:rgba(255,255,255,.9)}
.page-hero h1{font-size:44px;font-weight:800;line-height:1.18;letter-spacing:-.5px;color:#fff;max-width:900px}
.hero-lead{margin-top:18px;max-width:780px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.72)}
.anchor-tabs{display:flex;gap:10px;margin-top:32px;flex-wrap:wrap}
.anchor-tab{
  padding:8px 18px;border-radius:999px;font-size:14px;
  border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.anchor-tab:hover{background:rgba(255,255,255,.1);color:#fff}
.anchor-tab.active{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-accent-ink);font-weight:600}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--c-light)}
.section [id],section[id]{scroll-margin-top:96px}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--c-primary-100);color:var(--c-primary);
}
.section-head h2{position:relative;padding-left:16px;font-size:34px;line-height:1.28;font-weight:700}
.section-head h2::before{
  content:"";position:absolute;left:0;top:9px;width:4px;height:20px;border-radius:2px;background:var(--c-accent);
}
.section-head p{margin-top:16px;font-size:16px;color:var(--c-text-2)}

/* ---------- 概览 + 数据条 ---------- */
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.overview-media{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:0 12px 32px rgba(23,18,42,.1);
}
.overview-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.overview-body h2{position:relative;padding-left:16px;font-size:30px;line-height:1.3}
.overview-body h2::before{content:"";position:absolute;left:0;top:8px;width:4px;height:20px;border-radius:2px;background:var(--c-accent)}
.overview-body p{margin:16px 0 26px;font-size:15.5px;line-height:1.8;color:var(--c-text-2)}
.stats-bar{
  display:grid;grid-template-columns:repeat(2,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.stat{padding:22px 20px;border-top:1px solid var(--c-line);border-left:1px solid var(--c-line)}
.stat:nth-child(1),.stat:nth-child(2){border-top:0}
.stat:nth-child(odd){border-left:0}
.stat-value{font-size:24px;font-weight:800;color:var(--c-text);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-value em{font-style:normal;color:var(--c-primary)}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-3)}

/* ---------- 版本时间轴 ---------- */
.timeline{position:relative;padding-top:4px}
.timeline::before{
  content:"";position:absolute;left:9px;top:20px;bottom:20px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(255,95,126,.6),rgba(109,59,245,.4),rgba(194,245,60,.45));
}
.tl-item{position:relative;padding-left:48px;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:0;top:28px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--c-accent);
  box-shadow:0 0 0 4px rgba(194,245,60,.16);
}
.tl-item.is-latest .tl-dot{border-color:var(--c-hot);box-shadow:0 0 0 5px rgba(255,95,126,.16)}
.version-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.version-card:hover{border-color:rgba(109,59,245,.32);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}
.tl-item.is-latest .version-card{border-color:rgba(255,95,126,.28)}
.version-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.badge{display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.badge-version{background:var(--c-primary-100);color:var(--c-primary);font-variant-numeric:tabular-nums}
.badge-hot{background:var(--c-hot);color:#fff}
.badge-lime{background:var(--c-accent);color:var(--c-accent-ink)}
.version-date{margin-left:auto;font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.version-card h3{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:14px}
.update-list li{position:relative;padding-left:20px;margin-bottom:8px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
.update-list li:last-child{margin-bottom:0}
.update-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--c-accent);
}
.version-foot{
  margin-top:18px;padding-top:14px;border-top:1px dashed var(--c-line);
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:14px;
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;transition:color .2s ease}
.link-arrow:hover{color:var(--c-primary-600);text-decoration:underline;text-underline-offset:4px}
.foot-note{font-size:13px;color:var(--c-text-3)}

/* ---------- 升级步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow-card);overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.step-card::before{
  content:"";position:absolute;left:0;top:0;width:56px;height:2px;background:var(--c-accent);
}
.step-card:hover{border-color:rgba(109,59,245,.32);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}
.step-num{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;margin-bottom:18px;
  background:var(--c-accent);color:var(--c-accent-ink);
  font-size:17px;font-weight:800;font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px}
.step-card p{font-size:15px;line-height:1.75;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.open{border-color:rgba(109,59,245,.32);box-shadow:0 8px 24px rgba(109,59,245,.08)}
.faq-q{
  width:100%;height:56px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:16px;line-height:1;
  border:1px solid var(--c-line);color:var(--c-primary);
  transition:transform .26s ease,background var(--t),border-color var(--t);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--c-primary-100);border-color:transparent}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:80px 0;
  background:var(--c-dark) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,8,25,.82),rgba(12,8,25,.95))}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-copy{max-width:640px}
.cta-inner h2{font-size:32px;font-weight:700;color:#fff;line-height:1.3}
.cta-inner p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.72)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-dark);color:rgba(255,255,255,.62);padding:72px 0 0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),var(--c-accent),transparent);
  opacity:.85;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff}
.footer-brand p{margin-top:16px;max-width:350px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-contact{margin-top:18px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-contact span{color:rgba(255,255,255,.82)}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{max-width:1080px}
}
@media (max-width:992px){
  .container{padding:0 24px}
  .header-inner{padding:0 24px;gap:16px}
  .main-nav{display:none}
  .menu-toggle{display:grid}
  .section{padding:72px 0}
  .section-head h2{font-size:28px}
  .page-hero{padding:132px 0 52px}
  .page-hero h1{font-size:34px}
  .overview-grid{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .anchor-tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px}
  .anchor-tab{flex:0 0 auto}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .cta-actions{width:100%}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:26px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15px}
  .overview-body h2{font-size:24px}
  .cta-inner h2{font-size:26px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .header-inner{padding:0 18px}
  .page-hero{padding:120px 0 46px}
  .page-hero h1{font-size:27px}
  .section-head h2{font-size:23px}
  .faq-q{height:52px;font-size:15px;padding:0 16px}
  .faq-a p{padding:0 16px 18px}
  .version-card{padding:20px}
  .tl-item{padding-left:38px}
  .tl-dot{width:16px;height:16px;left:1px}
  .timeline::before{left:8px}
  .stat{padding:18px 14px}
  .stat-value{font-size:21px}
  .version-date{margin-left:0}
  .logo{font-size:15.5px}
  .logo-badge{display:none}
}
@media (max-width:375px){
  .page-hero h1{font-size:25px}
  .anchor-tab{font-size:13px;padding:7px 14px}
  .btn{font-size:14.5px;padding:0 20px}
}