/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --bg:#0B0D10;
  --bg-soft:#111419;
  --surface:#161A20;
  --surface-2:#1D222A;
  --line:#2A313A;
  --hair:rgba(255,255,255,.06);
  --txt:#EDF1F5;
  --txt-2:#9AA4B0;
  --txt-3:#6A7480;
  --primary:#1FD8A0;
  --primary-deep:#0E9E76;
  --primary-ink:#04150F;
  --accent:#FFC44D;
  --accent-2:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#24D18C;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 18px 48px -24px rgba(0,0,0,.75);
  --shadow-hover:0 22px 56px -22px rgba(31,216,160,.22);
  --shadow-accent:0 12px 28px -8px rgba(255,196,77,.45);
  --container:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,216,160,.3);color:#fff;}

/* ===== 布局基础 ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:104px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap;}
.section-title{
  font-size:clamp(23px,3vw,34px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  position:relative;
  padding-left:16px;
  color:var(--txt);
}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;width:3px;height:1.05em;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-desc{margin-top:12px;font-size:15px;color:var(--txt-2);max-width:720px;line-height:1.8;}
.dots-bg{
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
  min-height:48px;
}
.btn-primary{background:var(--accent);color:#181203;box-shadow:0 10px 26px -14px rgba(255,196,77,.6);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-accent);}
.btn-primary:active{transform:translateY(0);background:#EFB53C;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:var(--txt);border-color:rgba(255,255,255,.18);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:rgba(31,216,160,.08);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:44px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;transition:color .2s ease;
}
.link-more span{transition:transform .24s ease;}
.link-more:hover{color:#48e8b6;}
.link-more:hover span{transform:translateX(3px);}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;line-height:1;letter-spacing:.02em;white-space:nowrap;
}
.badge-cat{background:rgba(31,216,160,.16);color:var(--primary);border:1px solid rgba(31,216,160,.28);}
.badge-vip{background:rgba(255,196,77,.16);color:var(--accent);border:1px solid rgba(255,196,77,.32);}
.badge-line{background:transparent;color:var(--txt-2);border:1px solid var(--line);}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.meta-time{font-size:13px;color:var(--txt-3);font-variant-numeric:tabular-nums;}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,13,16,.42);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 32px -20px rgba(0,0,0,.8);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-stuck{background:rgba(11,13,16,.94);box-shadow:0 12px 38px -18px rgba(0,0,0,.9);border-bottom-color:rgba(255,255,255,.14);}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  height:var(--nav-h);display:flex;align-items:center;gap:28px;
  transition:height .24s ease;
}
.site-header.is-stuck .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  color:#08130F;font-weight:800;font-size:17px;letter-spacing:-.02em;
  box-shadow:0 6px 18px -8px rgba(31,216,160,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--txt);}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.22em;color:var(--txt-2);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;padding:10px 14px;font-size:14px;color:#C6CDD6;border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--txt);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:10px;
  border:1px solid rgba(255,255,255,.12);color:var(--txt-2);transition:.22s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(31,216,160,.5);background:rgba(31,216,160,.07);}
.menu-toggle{display:none;width:44px;height:44px;place-items:center;border-radius:10px;border:1px solid rgba(255,255,255,.12);}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt);border-radius:2px;transition:.24s ease;}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.menu-toggle.is-open span{background:transparent;}
.menu-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}
.nav-drawer{
  position:fixed;top:0;left:0;right:0;bottom:0;z-index:99;
  background:rgba(11,13,16,.96);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  padding:96px 24px 32px;display:flex;flex-direction:column;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .32s ease,opacity .28s ease;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.nav-drawer a{display:flex;align-items:center;height:52px;font-size:16px;color:#C6CDD6;border-bottom:1px solid var(--line);}
.nav-drawer a.active{color:var(--primary);}
.nav-drawer .btn{margin-top:24px;width:100%;}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:560px;height:90vh;
  display:flex;align-items:center;overflow:hidden;
  padding:calc(var(--nav-h) + 48px) 0 72px;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,16,.85) 0%,rgba(11,13,16,.62) 46%,rgba(11,13,16,.95) 100%);
}
.hero-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.9;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--primary);
  border:1px solid rgba(31,216,160,.3);background:rgba(31,216,160,.08);
  border-radius:999px;padding:6px 14px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  color:#fff;max-width:16em;
}
.hero-sub{margin-top:22px;font-size:18px;line-height:1.8;color:var(--txt-2);max-width:34em;}
.hero-meta{margin-top:18px;font-size:13px;color:var(--txt-3);letter-spacing:.02em;}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-card{
  justify-self:end;width:100%;max-width:330px;
  background:rgba(22,26,32,.86);
  border:1px solid var(--hair);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:24px;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.hero-card-top{display:flex;align-items:center;gap:16px;}
.ring{
  position:relative;width:76px;height:76px;border-radius:50%;flex-shrink:0;
  background:conic-gradient(var(--primary) 0 62%,rgba(255,255,255,.08) 62% 100%);
  display:grid;place-items:center;
}
.ring::before{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--surface-2);}
.ring-val{position:relative;font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;}
.hero-card h3{font-size:19px;font-weight:600;}
.hero-card .hc-note{font-size:13px;color:var(--txt-3);margin-top:4px;}
.hero-card ul{margin-top:20px;display:grid;gap:12px;}
.hero-card li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--txt-2);}
.hero-card li svg{flex-shrink:0;}

/* ===== 权益对比表 ===== */
.compare-hint{display:none;font-size:13px;color:var(--txt-3);margin-bottom:12px;}
.compare-scroll{overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
.compare-scroll::-webkit-scrollbar{height:6px;}
.compare-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.compare-table{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);min-width:760px;
}
.cmp-head,.cmp-row{display:grid;grid-template-columns:240px repeat(3,1fr);}
.cmp-cell{
  padding:0 20px;height:56px;display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--txt-2);border-left:1px solid var(--line);
}
.cmp-cell:first-child{border-left:0;}
.cmp-head .cmp-cell{height:66px;font-size:15px;font-weight:600;color:var(--txt);background:var(--surface-2);}
.cmp-head .cmp-cell:first-child{color:var(--txt-3);font-weight:500;font-size:13px;letter-spacing:.08em;}
.cmp-row{border-top:1px solid var(--line);}
.cmp-row:nth-child(even){background:rgba(255,255,255,.02);}
.cmp-row .cmp-cell:first-child{color:var(--txt);font-size:14px;}
.cmp-rec{background:rgba(255,196,77,.06);color:var(--accent);border-left:1px solid rgba(255,196,77,.32);position:relative;}
.cmp-head .cmp-rec{background:rgba(255,196,77,.1);color:var(--accent);}
.pill-rec{
  position:absolute;top:8px;right:12px;height:20px;padding:0 9px;border-radius:999px;
  background:var(--accent);color:#181203;font-size:11px;font-weight:700;display:inline-flex;align-items:center;
}
.cmp-val{font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;font-size:16px;}
.cmp-check{color:var(--primary);}
.cmp-dash{color:var(--txt-3);}
.compare-foot{
  margin-top:28px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:22px 24px;border:1px solid var(--hair);border-radius:var(--r-card);background:var(--surface);
}
.compare-foot p{font-size:14px;color:var(--txt-2);}

/* ===== 等级卡 ===== */
.level-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start;}
.level-card{
  position:relative;background:var(--surface);border:1px solid var(--hair);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.level-card:hover{transform:translateY(-4px);border-color:rgba(31,216,160,.55);box-shadow:var(--shadow-hover);}
.level-card:nth-child(2),.level-card:nth-child(3){margin-top:0;padding-bottom:36px;}
.level-card .corner{
  position:absolute;top:-1px;left:-1px;width:26px;height:26px;
  border-top:2px solid var(--accent);border-left:2px solid var(--accent);
  border-top-left-radius:var(--r-card);
}
.level-badge{
  width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(124,92,255,.9),rgba(31,216,160,.85));
  color:#0A0F12;font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.level-card h3{font-size:19px;font-weight:600;}
.level-card .lv-note{margin-top:6px;font-size:13px;color:var(--txt-3);}
.level-card ul{margin-top:18px;display:grid;gap:10px;}
.level-card li{font-size:14px;color:var(--txt-2);display:flex;gap:9px;align-items:flex-start;line-height:1.65;}
.level-card li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);margin-top:9px;flex-shrink:0;}
.progress{margin-top:22px;height:5px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
.progress i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:0 0 12px rgba(31,216,160,.6);}
.progress-label{margin-top:8px;font-size:12px;color:var(--txt-3);display:flex;justify-content:space-between;font-variant-numeric:tabular-nums;}

/* ===== 专属内容预览 ===== */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.preview-card{
  background:var(--surface);border:1px solid var(--hair);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow);transition:border-color .26s ease,transform .26s ease,box-shadow .26s ease;
  display:flex;flex-direction:column;
}
.preview-card:hover{border-color:rgba(31,216,160,.55);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.preview-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);border-radius:var(--r-img) var(--r-img) 0 0;}
.preview-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.preview-card:hover .preview-media img{transform:scale(1.04);}
.preview-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,13,16,.15) 0%,rgba(11,13,16,.72) 100%);}
.preview-media .badge{position:absolute;top:14px;left:14px;z-index:2;}
.preview-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.preview-body h3{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.preview-card:hover .preview-body h3{color:#fff;}
.preview-body p{margin-top:12px;font-size:14px;color:var(--txt-2);line-height:1.8;}
.preview-body .link-more{margin-top:auto;padding-top:18px;justify-content:flex-end;}

/* ===== 资讯列表（CMS） ===== */
.news-lead{
  display:grid;grid-template-columns:5fr 7fr;gap:32px;
  background:var(--surface);border:1px solid var(--hair);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);transition:border-color .26s ease,box-shadow .26s ease;
}
.news-lead:hover{border-color:rgba(31,216,160,.5);box-shadow:var(--shadow-hover);}
.news-lead-media{position:relative;min-height:240px;background:var(--surface-2);overflow:hidden;}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-lead:hover .news-lead-media img{transform:scale(1.04);}
.news-lead-body{padding:30px 32px;display:flex;flex-direction:column;}
.news-lead-title{margin-top:16px;font-size:clamp(20px,2.2vw,25px);font-weight:700;line-height:1.42;}
.news-lead-title a:hover{color:var(--primary);}
.news-lead-sum{margin-top:14px;font-size:15px;color:var(--txt-2);line-height:1.85;}
.news-lead-body .link-more{margin-top:auto;padding-top:20px;}
.news-list{margin-top:20px;border:1px solid var(--hair);border-radius:var(--r-card);background:var(--surface);overflow:hidden;}
.news-row{
  display:grid;grid-template-columns:120px 1fr auto;gap:20px;align-items:center;
  padding:16px 20px;border-top:1px solid var(--line);transition:background .2s ease;
}
.news-row:first-child{border-top:0;}
.news-row:hover{background:rgba(255,255,255,.03);}
.news-row-thumb{width:120px;height:80px;border-radius:10px;object-fit:cover;background:var(--surface-2);}
.news-row-title{
  font-size:16px;font-weight:600;color:var(--txt);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .2s ease;
}
.news-row:hover .news-row-title{color:var(--primary);}
.news-row-sum{margin-top:6px;font-size:13px;color:var(--txt-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-row-side{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  color:var(--txt-3);background:var(--surface);
}
.empty-state span{font-size:14px;}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.faq-aside p{margin-top:18px;font-size:15px;color:var(--txt-2);line-height:1.85;}
.faq-aside .btn{margin-top:26px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  transition:background .22s ease,border-color .22s ease;overflow:hidden;
}
.faq-item[open]{background:var(--surface-2);border-color:rgba(31,216,160,.4);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;font-size:16px;font-weight:600;color:var(--txt);
  display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform .24s ease;
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .26s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--txt-2);line-height:1.85;}

/* ===== CTA ===== */
.cta-section{
  background:var(--bg-soft);border-top:1px solid var(--line);position:relative;overflow:hidden;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;}
.cta-inner h2{font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.28;}
.cta-inner .cta-p{margin-top:18px;font-size:15px;color:var(--txt-2);line-height:1.85;max-width:34em;}
.cta-form{display:flex;gap:12px;}
.cta-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--txt);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:var(--txt-3);}
.cta-form input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px rgba(31,216,160,.18);}
.cta-form input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.cta-form input.is-error{border-color:var(--danger);}
.form-tip{margin-top:10px;font-size:13px;color:var(--txt-3);}
.form-tip.is-error{color:var(--danger);}
.trust-row{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap;}
.trust-row span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;color:var(--primary);border:1px solid rgba(31,216,160,.28);background:rgba(31,216,160,.06);
}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 2fr 3fr;gap:40px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--txt-2);line-height:1.85;max-width:30em;}
.social-row{margin-top:20px;display:flex;gap:10px;}
.social-row a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--txt-2);transition:.22s ease;
}
.social-row a:hover{color:var(--primary);border-color:rgba(31,216,160,.5);transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:600;color:var(--txt);margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col li{font-size:14px;color:var(--txt-2);transition:transform .2s ease,color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col li:hover{transform:translateX(2px);}
.footer-bottom{
  margin-top:60px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom a{color:var(--txt-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .container,.nav-inner{padding:0 24px;}
  .hero-inner{gap:36px;}
  .level-grid{gap:20px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-toggle{display:grid;}
  .nav-actions .btn-primary{display:none;}
  .hero{height:auto;min-height:0;padding:calc(var(--nav-h) + 56px) 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-card{justify-self:start;max-width:420px;}
  .level-grid{grid-template-columns:repeat(2,1fr);}
  .level-card:nth-child(2),.level-card:nth-child(3){padding-bottom:24px;}
  .preview-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .news-lead{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .section{padding:72px 0;}
  .container,.nav-inner{padding:0 18px;}
  .hero h1{font-size:clamp(28px,7.4vw,38px);}
  .hero-sub{font-size:16px;}
  .compare-hint{display:block;}
  .compare-table{min-width:700px;}
  .cmp-head,.cmp-row{grid-template-columns:150px repeat(3,1fr);}
  .cmp-cell{padding:0 14px;font-size:13px;}
  .news-row{grid-template-columns:96px 1fr;gap:14px;}
  .news-row-thumb{width:96px;height:64px;}
  .news-row-side{grid-column:1 / -1;justify-content:flex-start;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .section{padding:56px 0;}
  .level-grid,.preview-grid{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .compare-table{min-width:640px;}
  .cmp-head,.cmp-row{grid-template-columns:132px repeat(3,1fr);}
  .cmp-cell{font-size:12.5px;padding:0 10px;}
  .footer-grid{grid-template-columns:1fr;}
  .news-lead-body{padding:22px 20px;}
}

/* roulang page: article */
:root{
  --bg:#0B0D10;
  --bg-soft:#111419;
  --surface:#161A20;
  --surface-2:#1D222A;
  --line:#2A313A;
  --hair:rgba(255,255,255,.06);
  --txt:#EDF1F5;
  --txt-2:#9AA4B0;
  --txt-3:#6A7480;
  --primary:#1FD8A0;
  --primary-deep:#0E9E76;
  --primary-ink:#04150F;
  --accent:#FFC44D;
  --accent-2:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#24D18C;
  --danger:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 48px -24px rgba(0,0,0,.75);
  --shadow-hover:0 22px 56px -22px rgba(31,216,160,.22);
  --maxw:1200px;
  --nav-h:72px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
*{margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--txt-2);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,transform .22s ease;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font-family:inherit;font-size:inherit;outline:none;}
ul,ol{list-style:none;}
h1,h2,h3,h4{color:var(--txt);font-weight:700;}
::selection{background:rgba(31,216,160,.28);color:#fff;}

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

/* ===== 顶部阅读进度 ===== */
.progress-bar{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  box-shadow:0 0 12px rgba(31,216,160,.5);
  transition:width .08s linear;
}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:rgba(11,13,16,.42);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 32px -20px rgba(0,0,0,.8);
  transition:height .24s ease-out,background .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(11,13,16,.94);
  border-bottom-color:rgba(255,255,255,.13);
  box-shadow:0 10px 34px -18px rgba(0,0,0,.92);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  font-size:16px;font-weight:800;color:var(--primary-ink);
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 6px 18px -8px rgba(31,216,160,.65);
}
.brand-text{display:flex;flex-direction:column;line-height:1;}
.brand-main{font-size:20px;font-weight:800;color:var(--txt);letter-spacing:-.01em;}
.brand-sub{font-size:11px;font-weight:500;color:var(--txt-3);letter-spacing:.22em;margin-top:4px;}

.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{position:relative;font-size:14px;color:#C6CDD6;padding:6px 0;white-space:nowrap;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
}
.nav-links a:hover{color:var(--txt);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--txt);}

.header-actions{display:flex;align-items:center;gap:14px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);font-weight:700;font-size:15px;
  padding:14px 28px;white-space:nowrap;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--accent);color:#231A05;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(255,196,77,.45);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--txt);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-sm{padding:10px 20px;font-size:14px;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  place-items:center;transition:border-color .22s ease,background .22s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt);margin:3px auto;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle:hover{border-color:var(--primary);}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.nav-toggle.open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.mobile-panel{
  position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;z-index:99;
  background:rgba(11,13,16,.97);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-top:1px solid var(--hair);
  padding:16px 24px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-panel a{
  display:flex;align-items:center;height:48px;font-size:16px;color:var(--txt);
  border-bottom:1px solid var(--hair);
}
.mobile-panel a:hover{color:var(--primary);}
.mobile-panel .btn{width:100%;margin-top:24px;}

/* ===== 文章头部 ===== */
.article-hero{
  position:relative;overflow:hidden;
  padding:158px 0 54px;
  background:
    radial-gradient(1100px 500px at 18% -12%,rgba(31,216,160,.14),transparent 62%),
    radial-gradient(760px 380px at 92% 6%,rgba(255,196,77,.08),transparent 60%),
    var(--bg);
  border-bottom:1px solid var(--hair);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.055;
  background-image:radial-gradient(circle,var(--primary) 1px,transparent 1px);
  background-size:44px 44px;
}
.article-hero .container{position:relative;z-index:1;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--txt-3);margin-bottom:20px;
}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:var(--txt-3);}
.breadcrumb .current{color:var(--txt-2);}

.article-hero h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;
  max-width:920px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:24px;font-size:13px;color:var(--txt-3);
}
.meta-row .dot{color:var(--txt-3);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1;
}
.badge-primary{background:rgba(31,216,160,.14);color:var(--primary);border:1px solid rgba(31,216,160,.3);}
.badge-accent{background:rgba(255,196,77,.13);color:var(--accent);border:1px solid rgba(255,196,77,.3);}

/* ===== 头图 ===== */
.article-cover-section{padding:40px 0 0;}
.article-cover{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--hair);background:var(--surface-2);
  box-shadow:var(--shadow);
}
.article-cover img{
  width:100%;aspect-ratio:16/7;object-fit:cover;
}

/* ===== 正文 ===== */
.article-main{padding:48px 0 8px;}
.article-wrap{max-width:780px;margin:0 auto;}

.article-body{font-size:16.5px;line-height:1.95;color:var(--txt-2);}
.article-body > * + *{margin-top:22px;}
.article-body p{color:var(--txt-2);}
.article-body strong{color:var(--txt);font-weight:600;}
.article-body > h2{
  font-size:clamp(21px,2.4vw,26px);line-height:1.36;letter-spacing:-.01em;
  position:relative;padding-left:16px;margin-top:44px;color:var(--txt);
}
.article-body > h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:2px;background:var(--primary);
}
.article-body > h3{
  font-size:19px;line-height:1.45;color:var(--txt);margin-top:32px;
  font-weight:600;
}
.article-body ul,.article-body ol{padding-left:22px;}
.article-body ul{list-style:none;}
.article-body ul > li{position:relative;margin:9px 0;}
.article-body ul > li::before{
  content:"";position:absolute;left:-16px;top:.75em;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.article-body ol{list-style:decimal;color:var(--txt-2);}
.article-body ol > li{margin:9px 0;padding-left:4px;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(31,216,160,.42);}
.article-body a:hover{border-bottom-color:var(--primary);color:#5BE9BE;}
.article-body blockquote{
  position:relative;background:var(--surface);border-radius:var(--radius-sm);
  padding:18px 24px 18px 26px;color:var(--txt);margin:26px 0;
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--primary);
}
.article-body blockquote p{color:var(--txt);}
.article-body img{border-radius:14px;margin:0 auto;background:var(--surface-2);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--txt-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;font-size:15px;display:block;overflow-x:auto;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--hair);text-align:left;white-space:nowrap;}
.article-body th{color:var(--txt);background:var(--surface-2);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  background:var(--surface-2);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--accent);
}
.article-body pre{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:18px;overflow-x:auto;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--txt-2);}
.article-body hr{border:0;border-top:1px solid var(--hair);margin:36px 0;}

/* 正文提示卡（浅色） */
.article-body .tip-card{
  background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius-sm);
  padding:18px 22px;position:relative;padding-left:26px;
}
.article-body .tip-card::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:3px;background:var(--primary);
}

/* ===== 空态 ===== */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);
  background:var(--surface);padding:56px 28px;text-align:center;
}
.empty-state svg{color:var(--txt-3);margin:0 auto 18px;}
.empty-state h2{font-size:22px;color:var(--txt);margin-bottom:12px;}
.empty-state p{font-size:15px;color:var(--txt-3);max-width:460px;margin:0 auto 24px;}

/* ===== 文末区域 ===== */
.article-tail{padding:56px 0 104px;border-top:1px solid var(--hair);margin-top:56px;}
.tail-block + .tail-block{margin-top:48px;}
.tail-title{
  font-size:19px;color:var(--txt);position:relative;padding-left:14px;margin-bottom:18px;
}
.tail-title::before{
  content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:3px;
  border-radius:2px;background:var(--primary);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;
  border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.02);
  font-size:13px;color:var(--txt-2);
}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.tag:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--hair);border-radius:var(--radius);overflow:hidden;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(31,216,160,.45);box-shadow:var(--shadow-hover);}
.related-card:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2);}
.rc-body{padding:16px 18px 20px;display:flex;flex-direction:column;flex:1;}
.rc-body h3{
  font-size:16px;font-weight:600;line-height:1.55;color:var(--txt);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card:hover .rc-body h3{color:var(--primary);}
.rc-body time{margin-top:auto;padding-top:12px;font-size:13px;color:var(--txt-3);}

.back-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:44px;font-size:14px;}
.back-links a{display:inline-flex;align-items:center;gap:6px;color:var(--txt-2);}
.back-links a svg{transition:transform .22s ease;}
.back-links a:hover{color:var(--primary);}
.back-links a:hover svg{transform:translateX(-3px);}
.back-links a.forward:hover svg{transform:translateX(3px);}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand p{font-size:14px;color:var(--txt-3);line-height:1.9;margin-top:18px;max-width:330px;}
.social-row{display:flex;gap:12px;margin-top:22px;}
.social-row a{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--txt-2);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.social-row a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.social-row a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--txt);margin-bottom:20px;}
.footer-col li{margin-bottom:12px;font-size:14px;color:var(--txt-3);line-height:1.7;}
.footer-col a{display:inline-block;font-size:14px;color:var(--txt-2);}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--hair);margin-top:56px;padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom a:hover{color:var(--primary);}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .header-actions .btn-primary{display:none;}
  .container{padding:0 24px;}
  .article-hero{padding:138px 0 46px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .article-hero{padding:122px 0 38px;}
  .article-hero h1{font-size:clamp(25px,6.4vw,32px);}
  .article-cover img{aspect-ratio:16/10;}
  .article-main{padding:36px 0 4px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body > * + *{margin-top:20px;}
  .related-grid{grid-template-columns:1fr;}
  .article-tail{padding:44px 0 80px;margin-top:44px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .site-footer{padding:56px 0 0;}
  .footer-bottom{margin-top:40px;flex-direction:column;gap:8px;}
}
@media (max-width:420px){
  .brand-main{font-size:18px;}
  .brand-sub{font-size:10px;letter-spacing:.16em;}
  .article-hero{padding:112px 0 32px;}
  .meta-row{gap:9px;}
  .related-card .rc-body{padding:14px 16px 18px;}
}

/* roulang page: category1 */
:root{
  --bg:#0B0D10;
  --bg-soft:#111419;
  --surface:#161A20;
  --surface-2:#1D222A;
  --line:#2A313A;
  --line-soft:rgba(255,255,255,.06);
  --txt:#EDF1F5;
  --txt-2:#9AA4B0;
  --txt-3:#6A7480;
  --primary:#1FD8A0;
  --primary-deep:#0E9E76;
  --primary-ink:#04150F;
  --accent:#FFC44D;
  --accent-2:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#24D18C;
  --danger:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 18px 48px -24px rgba(0,0,0,.75);
  --shadow-hover:0 22px 56px -22px rgba(31,216,160,.22);
  --nav-h:72px;
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--txt);font-weight:700;line-height:1.3;}
h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em;}
h2{font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.25;}
h3{font-size:19px;font-weight:600;line-height:1.4;}
h4{font-size:15px;font-weight:600;line-height:1.5;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease;}
img{max-width:100%;display:block;border:0;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

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

/* ============ 装饰 ============ */
.dots-layer{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.9;
}
.corner-mark{position:relative;}
.corner-mark::before{
  content:"";position:absolute;top:10px;left:10px;width:16px;height:16px;
  border-top:1px solid var(--accent);border-left:1px solid var(--accent);opacity:.75;
}
.corner-mark::after{
  content:"";position:absolute;bottom:10px;right:10px;width:16px;height:16px;
  border-bottom:1px solid var(--accent);border-right:1px solid var(--accent);opacity:.35;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--nav-h);
  background:rgba(11,13,16,.42);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 32px -20px rgba(0,0,0,.8);
  transition:height .24s ease-out,background-color .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(11,13,16,.94);
  border-bottom-color:rgba(255,255,255,.12);
  box-shadow:0 14px 40px -22px rgba(0,0,0,.95);
}
.nav-inner{height:100%;display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--primary-ink);
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  box-shadow:0 8px 20px -10px rgba(31,216,160,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-main{font-size:20px;font-weight:800;color:var(--txt);letter-spacing:.01em;}
.brand-sub{font-size:11px;font-weight:500;color:var(--txt-2);letter-spacing:.18em;}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;
  padding:0 14px;font-size:14px;color:#C6CDD6;border-radius:10px;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
  border-radius:2px;
}
.nav-links a:hover{color:var(--txt);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);}
.nav-links a.active::after{transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:11px;border:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:center;color:var(--txt-2);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(31,216,160,.5);background:rgba(31,216,160,.06);}
.hamburger{
  display:none;width:44px;height:44px;border-radius:11px;
  border:1px solid rgba(255,255,255,.12);align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt);border-radius:2px;transition:transform .24s ease,top .24s ease;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.hamburger.is-active span{background:transparent;}
.hamburger.is-active span::before{top:0;transform:rotate(45deg);}
.hamburger.is-active span::after{top:0;transform:rotate(-45deg);}

.mobile-panel{
  position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;z-index:110;
  background:rgba(11,13,16,.96);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  padding:20px 24px 32px;
  display:flex;flex-direction:column;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel a{
  display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line-soft);
  font-size:16px;color:#C6CDD6;
}
.mobile-panel a.active{color:var(--primary);}
.mobile-panel .panel-cta{margin-top:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,opacity .2s ease;
}
.btn-primary{background:var(--accent);color:#20160A;box-shadow:0 10px 26px -14px rgba(255,196,77,.7);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(255,196,77,.45);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid rgba(255,255,255,.18);}
.btn-ghost:hover{color:var(--primary);border-color:rgba(31,216,160,.55);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;border-radius:10px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
}
.text-link svg{transition:transform .2s ease;}
.text-link:hover{color:var(--accent);}
.text-link:hover svg{transform:translateX(3px);}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:13px;font-weight:600;line-height:1;
}
.badge-accent{background:rgba(255,196,77,.14);color:var(--accent);border:1px solid rgba(255,196,77,.35);}
.badge-primary{background:rgba(31,216,160,.14);color:var(--primary);border:1px solid rgba(31,216,160,.28);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--txt-3);border:1px solid var(--line-soft);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 68px) 0 88px;
  background:
    linear-gradient(180deg,rgba(11,13,16,.92) 0%,rgba(11,13,16,.78) 45%,rgba(11,13,16,.96) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero .dots-layer{opacity:.55;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:18px;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.current{color:var(--txt-2);}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 em{font-style:normal;color:var(--primary);}
.hero-lead{font-size:17px;color:var(--txt-2);max-width:640px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--txt-3);margin-top:22px;}

.hero-card{
  position:relative;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--surface-2);}
.hero-card-body{padding:20px 22px 22px;}
.hero-card-body h3{font-size:17px;margin-bottom:6px;}
.hero-card-body p{font-size:14px;color:var(--txt-2);line-height:1.75;}
.hero-card-stats{display:flex;gap:24px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);}
.hero-card-stats .stat b{
  display:block;font-size:24px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-card-stats .stat span{font-size:12px;color:var(--txt-3);}

/* ============ 板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{position:relative;padding-left:16px;margin-bottom:14px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:.86em;
  background:var(--primary);border-radius:2px;
}
.section-head p{font-size:16px;color:var(--txt-2);}
.section-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ============ 对比表 ============ */
.compare-shell{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{width:100%;min-width:660px;border-collapse:collapse;}
table.compare th,table.compare td{
  padding:0 22px;height:56px;text-align:left;font-size:15px;
  border-bottom:1px solid var(--line);vertical-align:middle;
}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.compare thead th{
  height:70px;font-size:16px;color:var(--txt);font-weight:700;
  border-bottom:1px solid var(--line);background:var(--surface-2);
  position:relative;
}
table.compare thead th:first-child{font-size:14px;color:var(--txt-3);font-weight:600;}
table.compare td:first-child{color:var(--txt);font-weight:600;width:240px;}
table.compare td:not(:first-child){text-align:center;}
table.compare th.col-rec,table.compare td.col-rec{
  background:rgba(255,196,77,.06);
  border-left:1px solid rgba(255,196,77,.35);
  border-right:1px solid rgba(255,196,77,.35);
  box-shadow:0 10px 30px -22px rgba(255,196,77,.8);
}
table.compare tbody tr:last-child td{border-bottom:0;}
.cell-yes,.cell-no{display:inline-flex;align-items:center;justify-content:center;}
.cell-yes{color:var(--primary);}
.cell-no{color:var(--txt-3);}
.cell-num{font-size:18px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;}

.compare-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;border-top:1px solid var(--line);background:rgba(255,255,255,.015);
}
.compare-foot p{font-size:14px;color:var(--txt-3);}

/* ============ 时间轴 ============ */
.timeline{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding-top:34px;
}
.timeline::before{
  content:"";position:absolute;top:11px;left:2%;right:2%;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary) 0%,var(--primary-deep) 42%,var(--violet) 100%);
  opacity:.55;
}
.tl-item{position:relative;padding:34px 22px 24px;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.tl-item:nth-child(2){margin-top:12px;}
.tl-item:nth-child(3){margin-top:-6px;}
.tl-item:hover{transform:translateY(-4px);border-color:rgba(31,216,160,.5);box-shadow:var(--shadow-hover);}
.tl-dot{
  position:absolute;top:-34px;left:22px;width:22px;height:22px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
  box-shadow:0 0 0 6px rgba(31,216,160,.1);
}
.tl-item:nth-child(3) .tl-dot{border-color:var(--accent);box-shadow:0 0 0 6px rgba(255,196,77,.1);}
.tl-item:nth-child(4) .tl-dot{border-color:var(--violet);box-shadow:0 0 0 6px rgba(124,92,255,.12);}
.tl-level{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--txt);}
.tl-threshold{
  display:inline-block;margin-top:10px;font-size:13px;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.tl-item p{font-size:14px;color:var(--txt-2);line-height:1.8;margin-top:12px;}
.tl-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.07);margin-top:18px;overflow:hidden;}
.tl-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--primary),var(--violet));}

/* ============ 流程列表 ============ */
.step-list{border-top:1px solid var(--line);}
.step-row{
  display:grid;grid-template-columns:64px 1fr 260px;align-items:center;gap:22px;
  padding:26px 18px;border-bottom:1px solid var(--line);position:relative;
  transition:background-color .22s ease;
}
.step-row::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .24s ease;
}
.step-row:hover{background:rgba(255,255,255,.03);}
.step-row:hover::before{transform:scaleY(1);}
.step-index{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--primary);
  background:rgba(31,216,160,.09);border:1px solid rgba(31,216,160,.28);
  font-variant-numeric:tabular-nums;
}
.step-main h3{font-size:17px;margin-bottom:6px;}
.step-main p{font-size:14px;color:var(--txt-2);}
.step-side{font-size:13px;color:var(--txt-3);text-align:right;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius-sm);
  transition:background-color .22s ease,border-color .22s ease;
}
.faq-item[open]{background:var(--surface-2);border-color:rgba(31,216,160,.35);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--txt);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .2s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-icon{
  flex-shrink:0;width:20px;height:20px;position:relative;transition:transform .24s ease;color:var(--primary);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{top:0;left:9px;width:2px;height:20px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--txt-2);line-height:1.85;}

/* ============ CTA ============ */
.cta-section{
  position:relative;overflow:hidden;padding:96px 0;
  background:var(--bg-soft);border-top:1px solid var(--line);
}
.cta-section .dots-layer{opacity:.6;}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.cta-copy h2{padding-left:16px;position:relative;margin-bottom:18px;}
.cta-copy h2::before{content:"";position:absolute;left:0;top:.22em;width:3px;height:.86em;background:var(--accent);border-radius:2px;}
.cta-copy p{font-size:16px;color:var(--txt-2);max-width:520px;}
.cta-panel{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:13px;color:var(--txt-3);}
.field input{
  height:48px;padding:0 16px;border-radius:var(--radius-sm);
  background:var(--surface-2);border:1px solid var(--line);color:var(--txt);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--txt-3);}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,216,160,.25);}
.field input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.field.has-error input{border-color:var(--danger);}
.field .err{font-size:13px;color:var(--danger);display:none;}
.field.has-error .err{display:block;}
.form-note{font-size:13px;color:var(--txt-3);margin-top:14px;}
.form-note a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.trust-chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 13px;
  border-radius:var(--radius-pill);font-size:12.5px;color:var(--primary);
  background:rgba(31,216,160,.07);border:1px solid rgba(31,216,160,.22);
}
.form-ok{display:none;margin-top:14px;font-size:14px;color:var(--ok);}
.form-ok.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--txt-2);max-width:340px;line-height:1.85;}
.social-row{display:flex;gap:10px;margin-top:20px;}
.social-row a{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--txt-2);
}
.social-row a:hover{color:var(--primary);border-color:rgba(31,216,160,.5);background:rgba(31,216,160,.06);}
.footer-col h4{color:var(--txt);margin-bottom:16px;font-size:15px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--txt-2);}
.footer-col ul li a{color:var(--txt-2);display:inline-block;}
.footer-col ul li a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom a{color:var(--txt-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-inner{gap:36px;}
  .step-row{grid-template-columns:64px 1fr 200px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .nav-actions .icon-btn{display:none;}
  .section{padding:72px 0;}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-card{max-width:560px;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .timeline::before{display:none;}
  .tl-item{margin-top:0 !important;padding-top:24px;}
  .tl-dot{position:static;display:inline-block;margin-bottom:12px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .step-row{grid-template-columns:56px 1fr;gap:16px;}
  .step-side{grid-column:2;text-align:left;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:52px 0;}
  .page-hero{padding:calc(var(--nav-h) + 36px) 0 52px;}
  .hero-actions .btn{width:100%;}
  .hero-card-stats{gap:18px;}
  .section-head{margin-bottom:30px;}
  .section-head-split{flex-direction:column;align-items:flex-start;}
  .timeline{grid-template-columns:1fr;gap:16px;}
  .compare-foot{flex-direction:column;align-items:flex-start;}
  .cta-section{padding:56px 0;}
  .cta-panel{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  table.compare th,table.compare td{padding:0 16px;}
}
@media (max-width:420px){
  .brand-main{font-size:18px;}
  .brand-sub{letter-spacing:.12em;}
  .hero-copy h1{letter-spacing:-.01em;}
  .badge{font-size:12px;padding:0 10px;}
}

/* roulang page: category3 */
/* ================= 设计变量 ================= */
:root{
  --bg:#0B0D10;
  --bg-soft:#111419;
  --surface:#161A20;
  --surface-2:#1D222A;
  --line:#2A313A;
  --line-soft:rgba(255,255,255,.06);
  --txt:#EDF1F5;
  --txt-2:#9AA4B0;
  --txt-3:#6A7480;
  --primary:#1FD8A0;
  --primary-deep:#0E9E76;
  --primary-ink:#04150F;
  --accent:#FFC44D;
  --accent-2:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#24D18C;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 18px 48px -24px rgba(0,0,0,.75);
  --shadow-hover:0 22px 56px -22px rgba(31,216,160,.22);
  --nav-h:72px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
svg{display:block}
::selection{background:rgba(31,216,160,.28);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:8px;
}

/* ================= 容器与区块 ================= */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(23px,3vw,34px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  display:flex;
  align-items:center;
  gap:14px;
}
.section-head h2::before{
  content:"";
  width:3px;
  height:26px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  flex:0 0 auto;
}
.section-head p{margin-top:16px;color:var(--txt-2);font-size:16px;max-width:720px}
.eyebrow{font-size:13px;color:var(--primary);letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}

/* ================= 顶部导航 ================= */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  height:var(--nav-h);
  background:rgba(11,13,16,.42);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 32px -20px rgba(0,0,0,.8);
  transition:height .24s ease-out,background .24s ease-out,border-color .24s ease-out;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(11,13,16,.94);
  border-bottom-color:rgba(255,255,255,.12);
  box-shadow:0 12px 40px -22px rgba(0,0,0,.95);
}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

/* Logo */
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:var(--primary-ink);
  background:linear-gradient(135deg,var(--primary) 8%,var(--accent) 96%);
  box-shadow:0 8px 22px -12px rgba(31,216,160,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-main{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--txt)}
.brand-sub{font-size:11px;font-weight:500;color:var(--txt-2);letter-spacing:.18em}

/* 导航链接 */
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;
  font-size:14px;
  color:#C6CDD6;
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s ease;
  border-radius:2px;
}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after,
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary)}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;
  border-radius:11px;
  border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;
  color:var(--txt-2);
  transition:color .2s,border-color .2s,transform .2s;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(31,216,160,.5);transform:translateY(-1px)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;color:var(--txt);border:1px solid rgba(255,255,255,.14);border-radius:11px}

/* 移动端面板 */
.mobile-panel{
  position:fixed;
  top:64px;left:0;right:0;bottom:0;
  z-index:110;
  padding:22px 20px 32px;
  background:rgba(11,13,16,.97);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:6px;
  transform:translateY(-14px);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s ease,transform .24s ease;
  overflow-y:auto;
}
.mobile-panel.open{opacity:1;transform:none;pointer-events:auto}
.mobile-panel a{
  height:48px;
  display:flex;align-items:center;
  font-size:15px;
  color:#C6CDD6;
  border-bottom:1px solid var(--line-soft);
}
.mobile-panel a.active{color:var(--primary)}
.mobile-panel .btn{width:100%;justify-content:center;margin-top:18px}
body.no-scroll{overflow:hidden}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:14px 28px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#241a02;box-shadow:0 10px 26px -14px rgba(255,196,77,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(255,196,77,.45)}
.btn-primary:active{transform:translateY(0);filter:brightness(.92)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--txt)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94)}
.btn-sm{min-height:44px;padding:11px 20px;font-size:14px}
.btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}

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

/* ================= 分类页首屏 ================= */
.cat-hero{
  position:relative;
  padding:calc(var(--nav-h) + 76px) 0 84px;
  background-image:linear-gradient(rgba(11,13,16,.87),rgba(11,13,16,.62)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.28;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--txt-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--txt-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--txt-3)}
.breadcrumb .current{color:var(--txt-2)}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:48px;
  align-items:center;
}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
}
.cat-hero h1 em{font-style:normal;color:var(--primary)}
.cat-hero .lead{
  margin-top:20px;
  font-size:18px;
  color:var(--txt-2);
  max-width:640px;
}
.hero-facts{
  margin-top:22px;
  display:flex;flex-wrap:wrap;gap:8px 14px;
  font-size:13px;color:var(--txt-3);
}
.hero-facts span{display:inline-flex;align-items:center;gap:7px}
.hero-facts span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

.support-card{
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow);
}
.support-card h3{font-size:17px;font-weight:600;margin-bottom:18px}
.metric-row{display:flex;align-items:baseline;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line-soft)}
.metric-row:last-child{border-bottom:none}
.metric-row .k{font-size:14px;color:var(--txt-2)}
.metric-row .v{font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}

/* ================= 快捷定位卡 ================= */
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quick-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(31,216,160,.45);box-shadow:var(--shadow-hover)}
.quick-card .qc-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,216,160,.12);
  color:var(--primary);
  margin-bottom:18px;
}
.quick-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.quick-card p{font-size:14.5px;color:var(--txt-2);line-height:1.8}
.quick-card .qc-foot{margin-top:18px;font-size:13px;color:var(--txt-3);display:flex;justify-content:space-between;align-items:center}
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 11px;
  border-radius:999px;
  font-size:13px;
  background:rgba(31,216,160,.12);
  color:var(--primary);
  border:1px solid rgba(31,216,160,.25);
}
.tag--gold{background:rgba(255,196,77,.10);color:var(--accent);border-color:rgba(255,196,77,.32)}

/* ================= FAQ 折叠 ================= */
.faq-layout{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:40px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;line-height:1.3;
  display:flex;gap:14px;align-items:center;
}
.faq-aside h2::before{content:"";width:3px;height:24px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--primary-deep))}
.faq-aside p{margin-top:16px;color:var(--txt-2);font-size:15px}
.faq-aside .btn{margin-top:22px}

.faq-group{margin-bottom:44px;scroll-margin-top:calc(var(--nav-h) + 28px)}
.faq-group:last-child{margin-bottom:0}
.faq-group h3{
  font-size:19px;font-weight:600;
  display:flex;align-items:center;gap:12px;
  margin-bottom:18px;
}
.faq-group h3 .badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:28px;height:28px;padding:0 8px;
  border-radius:9px;
  font-size:13px;font-weight:700;
  color:var(--primary-ink);
  background:linear-gradient(135deg,var(--primary),#3ef0b8);
  font-variant-numeric:tabular-nums;
}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:12px;
  transition:background .22s ease,border-color .22s ease;
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:18px 58px 18px 20px;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  min-height:44px;
  display:flex;
  align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:20px;top:50%;
  width:16px;height:16px;
  margin-top:-8px;
  background:
    linear-gradient(var(--primary),var(--primary)) center/16px 1.8px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/1.8px 16px no-repeat;
  transition:transform .24s ease;
}
.faq-item[open]{
  background:var(--surface-2);
  border-color:rgba(31,216,160,.35);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
}
.faq-body{
  padding:0 20px 20px 20px;
  color:var(--txt-2);
  font-size:15px;
  line-height:1.85;
  border-top:1px solid var(--line-soft);
  margin-top:2px;
  padding-top:16px;
}
.faq-body strong{color:var(--txt)}
.faq-body ul{margin-top:10px;display:grid;gap:8px}
.faq-body ul li{position:relative;padding-left:16px}
.faq-body ul li::before{
  content:"";
  position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:2px;
  background:var(--primary);
}

/* ================= 自助排查时间线 ================= */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;position:relative}
.step{position:relative;padding:0 22px 0 0}
.step-line{
  height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  margin-bottom:24px;
  position:relative;
}
.step-line::after{
  content:"";
  position:absolute;right:-5px;top:-4px;
  width:11px;height:11px;border-radius:50%;
  background:var(--bg);
  border:2px solid var(--violet);
}
.step:last-child .step-line{background:linear-gradient(90deg,var(--primary),var(--primary-deep))}
.step:last-child .step-line::after{border-color:var(--primary)}
.step-num{
  font-size:13px;color:var(--txt-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.12em;
  margin-bottom:10px;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--txt-2)}

/* ================= 服务保障（图文区） ================= */
.promise-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:center}
.promise-figure{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
  background:var(--surface-2);
}
.promise-figure img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px}
.stat{
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:20px;
}
.stat .num{font-size:28px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.stat .lbl{font-size:13.5px;color:var(--txt-2);margin-top:6px}

/* ================= 联系支持 ================= */
.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.contact-card{
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:30px;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
}
.contact-card h3{font-size:20px;font-weight:600;margin-bottom:12px}
.contact-card p{color:var(--txt-2);font-size:15px}
.contact-list{margin-top:20px;display:grid;gap:12px}
.contact-list li{
  display:flex;justify-content:space-between;gap:16px;
  font-size:14.5px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line-soft);
  color:var(--txt-2);
}
.contact-list li span:last-child{color:var(--txt);font-variant-numeric:tabular-nums}
.contact-card .btn{align-self:flex-start;margin-top:auto}
.contact-card .btn{margin-top:26px}

.ticket-form{margin-top:22px;display:grid;gap:14px}
.field label{display:block;font-size:13.5px;color:var(--txt-3);margin-bottom:8px}
.field input,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 16px;
  border-radius:var(--r-btn);
  background:var(--surface-2);
  border:1px solid var(--line);
  color:var(--txt);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--txt-3)}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,216,160,.18);
}
.form-hint{font-size:13px;color:var(--txt-3)}
.form-hint a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}

/* ================= CTA ================= */
.cta-band{
  position:relative;
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.3;
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:44px;align-items:center}
.cta-grid h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;line-height:1.28;
  display:flex;gap:14px;align-items:center;
}
.cta-grid h2::before{content:"";width:3px;height:26px;border-radius:3px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}
.cta-grid p{margin-top:16px;color:var(--txt-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.trust-row span{
  display:inline-flex;align-items:center;
  height:28px;padding:0 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--primary);
  border:1px solid rgba(31,216,160,.22);
  background:rgba(31,216,160,.06);
}

/* ================= 页脚 ================= */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:18px;color:var(--txt-2);font-size:14.5px;max-width:320px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-row a{
  width:40px;height:40px;
  border-radius:11px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--txt-2);
  transition:color .2s,border-color .2s,transform .2s;
}
.social-row a:hover{color:var(--primary);border-color:rgba(31,216,160,.5);transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:var(--txt-2)}
.footer-col a{color:var(--txt-2);display:inline-block;transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--line);
  padding:24px 0 32px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  justify-content:space-between;
  font-size:13px;
  color:var(--txt-3);
}
.footer-bottom a{color:var(--txt-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ================= 响应式 ================= */
@media (max-width:1279px){
  .container{padding:0 24px}
  .hero-grid{gap:36px}
  .faq-layout{grid-template-columns:minmax(0,270px) minmax(0,1fr);gap:32px}
}

@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-links,.nav-tools .btn,.nav-tools .icon-btn{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .support-card{max-width:520px}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .promise-grid{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}

@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .cat-hero{padding:calc(var(--nav-h) + 48px) 0 56px}
  .cat-hero .lead{font-size:16.5px}
  .quick-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:26px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .brand-main{font-size:18px}
  .brand-sub{font-size:10.5px}
  .faq-item summary{font-size:15.5px;padding:16px 52px 16px 18px}
  .faq-body{padding:14px 18px 18px}
  .btn{padding:13px 22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

@media (max-width:420px){
  .cat-hero h1{font-size:27px}
  .hero-actions .btn{width:100%}
  .contact-card{padding:22px}
  .support-card{padding:20px}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg:#0B0D10;
  --bg-soft:#111419;
  --surface:#161A20;
  --surface-2:#1D222A;
  --line:#2A313A;
  --line-soft:rgba(255,255,255,.06);
  --txt:#EDF1F5;
  --txt-2:#9AA4B0;
  --txt-3:#6A7480;
  --primary:#1FD8A0;
  --primary-deep:#0E9E76;
  --primary-ink:#04150F;
  --accent:#FFC44D;
  --accent-2:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#24D18C;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 18px 48px -24px rgba(0,0,0,.75);
  --shadow-hover:0 22px 56px -22px rgba(31,216,160,.22);
  --nav-h:72px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--txt)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
body.no-scroll{overflow:hidden}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease,opacity .22s;
}
.btn-primary{background:var(--accent);color:#1A1206}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(255,196,77,.45)}
.btn-primary:active{transform:translateY(0);background:#E9AE38}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--txt)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px}

.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-more span{transition:transform .22s ease}
.link-more:hover span{transform:translateX(3px)}

/* ============ 玻璃导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;height:var(--nav-h);
  background:rgba(11,13,16,.42);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 32px -20px rgba(0,0,0,.8);
  transition:height .24s ease-out,background .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(11,13,16,.94);
  border-bottom-color:rgba(255,255,255,.12);
  box-shadow:0 12px 36px -18px rgba(0,0,0,.9);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  font-size:16px;font-weight:800;color:var(--primary-ink);
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  box-shadow:0 8px 20px -10px rgba(31,216,160,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-main{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--txt)}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--txt-2)}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:10px 14px;font-size:14px;color:#C6CDD6;border-radius:10px}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .24s ease-out;
}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--txt)}

.nav-actions{display:flex;align-items:center;gap:10px}
.nav-search{display:flex;align-items:center;position:relative}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:var(--txt-2);border:1px solid transparent;transition:color .2s,border-color .2s,background .2s;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(31,216,160,.4);background:rgba(31,216,160,.06)}
.search-form{width:0;opacity:0;overflow:hidden;transition:width .26s ease,opacity .26s ease}
.nav-search.open .search-form{width:220px;opacity:1}
.search-form input{
  width:100%;height:40px;padding:0 14px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);color:var(--txt);font-size:14px;
}
.search-form input::placeholder{color:var(--txt-3)}
.search-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,216,160,.14)}

.nav-toggle{display:none;width:44px;height:44px;border-radius:11px;border:1px solid rgba(255,255,255,.14);align-items:center;justify-content:center;color:var(--txt)}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-toggle .bars{position:relative;width:18px;height:12px}
.nav-toggle .bars i{position:absolute;left:0;right:0;height:2px;background:currentColor;border-radius:2px;transition:transform .24s ease,opacity .2s}
.nav-toggle .bars i:nth-child(1){top:0}
.nav-toggle .bars i:nth-child(2){top:5px}
.nav-toggle .bars i:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 移动端抽屉 */
.mobile-panel{
  position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;gap:6px;
  padding:88px 20px 28px;background:rgba(11,13,16,.97);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transform:translateY(-100%);opacity:0;visibility:hidden;overflow-y:auto;
  transition:transform .3s ease-out,opacity .3s ease,visibility .3s;
}
.mobile-panel.open{transform:translateY(0);opacity:1;visibility:visible}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 16px;font-size:16px;color:#C6CDD6;
  border-bottom:1px solid var(--line-soft);border-radius:10px;
}
.mobile-panel a:hover,.mobile-panel a.active{color:var(--primary);background:rgba(31,216,160,.06)}
.mobile-panel .btn{margin-top:18px;width:100%}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 84px) 0 84px;
  background:#0B0D10 url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:22px 22px;
}
.hero-veil{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,13,16,.85) 0%,rgba(11,13,16,.55) 52%,rgba(11,13,16,.96) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:880px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:20px}
.crumb a{color:var(--txt-3)}
.crumb a:hover{color:var(--primary)}
.crumb-current{color:var(--txt-2)}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-sub{font-size:17px;color:var(--txt-2);max-width:700px;line-height:1.9}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 30px}
.hero-tags li{
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--primary);
  background:rgba(31,216,160,.1);border:1px solid rgba(31,216,160,.28);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 板块 ============ */
.section{padding:104px 0;position:relative}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{
  position:relative;font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.25;
  padding-left:16px;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{font-size:15.5px;color:var(--txt-2);padding-left:16px}

/* ============ 头条推荐 ============ */
.feature-row{
  display:grid;grid-template-columns:5fr 7fr;gap:0;
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);transition:border-color .26s ease,box-shadow .26s ease;
}
.feature-row:hover{border-color:rgba(31,216,160,.35);box-shadow:var(--shadow-hover)}
.feature-media{position:relative;min-height:320px;background:var(--surface-2);overflow:hidden}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feature-row:hover .feature-media img{transform:scale(1.04)}
.feature-media::after{content:"";position:absolute;inset:auto 0 0 0;height:55%;background:linear-gradient(180deg,transparent,rgba(11,13,16,.82))}
.feature-media .badge{position:absolute;top:16px;left:16px;z-index:2}
.feature-body{padding:36px 36px 32px;display:flex;flex-direction:column;gap:16px}
.feature-body h3{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4}
.feature-body p{color:var(--txt-2);font-size:15.5px}
.meta-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--txt-3)}
.meta-line .tag{color:var(--primary);background:rgba(31,216,160,.12);border:1px solid rgba(31,216,160,.26);border-radius:999px;padding:3px 12px;font-size:13px}
.check-list{display:flex;flex-direction:column;gap:10px}
.check-list li{position:relative;padding-left:26px;color:var(--txt-2);font-size:15px}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:14px;height:14px;border-radius:4px;
  background:rgba(31,216,160,.14);border:1px solid rgba(31,216,160,.5);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:16px;width:6px;height:3px;border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(-45deg);
}

/* ============ 内容卡网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(31,216,160,.4);box-shadow:var(--shadow-hover)}
.card--wide{grid-column:span 2}
.card-media{position:relative;display:block;overflow:hidden;background:var(--surface-2);aspect-ratio:16/9}
.card--wide .card-media{aspect-ratio:16/7}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:auto 0 0 0;height:60%;background:linear-gradient(180deg,transparent,rgba(11,13,16,.75))}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;font-weight:600;line-height:1.45}
.card--wide .card-body h3{font-size:22px}
.card-body h3 a:hover{color:var(--primary)}
.card-body p{font-size:14.5px;color:var(--txt-2);line-height:1.8}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--txt-3)}
.card-meta .cat{color:var(--primary)}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.01em;
}
.badge-accent{background:rgba(255,196,77,.16);color:var(--accent);border:1px solid rgba(255,196,77,.42)}
.badge-primary{background:rgba(31,216,160,.14);color:var(--primary);border:1px solid rgba(31,216,160,.34)}
.badge-violet{background:rgba(124,92,255,.16);color:#B4A4FF;border:1px solid rgba(124,92,255,.4)}

/* 订阅小卡 */
.subscribe-card{
  grid-column:span 2;display:flex;flex-direction:column;justify-content:center;gap:14px;
  padding:30px 32px;border-radius:var(--radius-card);
  background:linear-gradient(135deg,rgba(31,216,160,.1),rgba(255,196,77,.08));
  border:1px solid rgba(31,216,160,.28);
}
.subscribe-card h3{font-size:20px;font-weight:700}
.subscribe-card p{font-size:14.5px;color:var(--txt-2)}
.subscribe-card .btn{align-self:flex-start}

/* ============ 分页 ============ */
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:52px}
.pager-item{
  min-width:44px;height:44px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);color:var(--txt-2);font-size:14px;
  transition:border-color .22s,color .22s,background .22s,transform .22s;
}
a.pager-item:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.pager-item.is-current{background:var(--primary);border-color:var(--primary);color:var(--primary-ink);font-weight:700}
.pager-item.is-disabled{opacity:.42;cursor:not-allowed}
.back-home{margin-top:34px;text-align:center}

/* ============ 频道分区 ============ */
.topic-wrap{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.topic-chips{display:flex;flex-wrap:wrap;gap:12px}
.topic-chips span{
  padding:10px 18px;border-radius:999px;font-size:14px;color:var(--txt-2);
  background:var(--surface);border:1px solid var(--line);transition:border-color .22s,color .22s,transform .22s;
}
.topic-chips span:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.topic-stats{display:grid;gap:18px}
.stat{
  padding:24px;border-radius:var(--radius-card);background:var(--surface);
  border:1px solid var(--line-soft);box-shadow:var(--shadow);
}
.stat strong{
  display:block;font-size:34px;font-weight:800;line-height:1.1;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--txt-2)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  transition:background .24s,border-color .24s,box-shadow .24s;
}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex-shrink:0;width:14px;height:14px;transition:transform .24s ease;
  background:
    linear-gradient(var(--primary),var(--primary)) center/100% 2px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/2px 100% no-repeat;
}
.faq-item[open]{
  background:var(--surface-2);border-color:rgba(31,216,160,.35);
  box-shadow:inset 3px 0 0 0 var(--primary),var(--shadow);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 20px 20px;font-size:15px;color:var(--txt-2)}

/* ============ CTA ============ */
.cta-section{
  background:var(--bg-soft);border-top:1px solid var(--line-soft);
  position:relative;overflow:hidden;
}
.cta-section::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:22px 22px;
}
.cta-panel{
  position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.cta-copy h2{font-size:clamp(23px,3vw,32px);margin-bottom:16px}
.cta-copy p{color:var(--txt-2);font-size:15.5px}
.cta-form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:8px}
.cta-form input{
  height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--txt);font-size:15px;
  transition:border-color .22s,box-shadow .22s;
}
.cta-form input::placeholder{color:var(--txt-3)}
.cta-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,216,160,.16)}
.cta-form input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,107,107,.14)}
.field-msg{font-size:13px;color:var(--danger);min-height:18px}
.field-msg.ok{color:var(--ok)}
.form-note{font-size:13px;color:var(--txt-3)}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.trust-row li{
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--primary);
  border:1px solid rgba(31,216,160,.28);background:rgba(31,216,160,.08);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin:18px 0 20px;font-size:14.5px;color:var(--txt-2);max-width:330px}
.social-row{display:flex;gap:10px}
.social-row a{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--txt-2);transition:border-color .22s,color .22s,transform .22s;
}
.social-row a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--txt)}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:var(--txt-2)}
.footer-col a{color:var(--txt-2);display:inline-block;transition:color .22s,transform .22s}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--txt-3);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{color:var(--txt-3)}
.footer-links a:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px}
  .section{padding:88px 0}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero{padding:calc(var(--nav-h) + 64px) 0 64px}
  .section{padding:72px 0}
  .feature-row{grid-template-columns:1fr}
  .feature-media{min-height:260px;aspect-ratio:16/9}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .card--wide{grid-column:span 2}
  .subscribe-card{grid-column:span 2}
  .topic-wrap{grid-template-columns:1fr;gap:32px}
  .topic-stats{grid-template-columns:repeat(3,1fr)}
  .cta-panel{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:span 2}
}
@media (max-width:767px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .brand-main{font-size:18px}
  .brand-sub{font-size:10px;letter-spacing:.12em}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 52px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .section{padding:52px 0}
  .section-head{margin-bottom:32px}
  .card-grid{grid-template-columns:1fr}
  .card--wide,.subscribe-card{grid-column:span 1}
  .card--wide .card-media{aspect-ratio:16/9}
  .feature-body{padding:24px 20px}
  .card-body{padding:18px}
  .topic-stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-brand{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px}
  .card-body h3,.card--wide .card-body h3{font-size:18px}
  .btn{padding:12px 20px;font-size:14.5px}
  .faq-item summary{font-size:15px;padding:16px}
  .stat strong{font-size:28px}
}