/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --bg-0:#0B0E13;
  --bg-1:#12161F;
  --surface:#171C26;
  --surface-2:#1E2531;
  --line:rgba(255,255,255,.08);
  --line-strong:#2A3444;
  --brand:#17E0A0;
  --brand-d:#0FB584;
  --accent:#FF7A2F;
  --tint:#FFD166;
  --t-1:#F2F5F9;
  --t-2:#A8B3C4;
  --t-3:#6C7889;
  --paper:#F4F6FA;
  --t-1p:#0B0E13;
  --t-2p:#495568;
  --ok:#17E0A0;
  --warn:#FFB020;
  --err:#FF5B5B;
  --info:#4CC3FF;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 14px 36px rgba(23,224,160,.14);
  --container:1200px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --sp-section:88px;
}
@media (min-width:1440px){:root{--container:1280px}}
@media (max-width:1024px){:root{--sp-section:64px}}
@media (max-width:520px){:root{--sp-section:52px}}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box}
html{margin:0;padding:0;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  letter-spacing:-.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol,li{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(23,224,160,.28);color:#fff}
.mono{font-family:var(--font-mono);letter-spacing:.06em}

/* ========== 容器与板块 ========== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:var(--sp-section) 0;position:relative}
.section-alt{background:var(--bg-1)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-family:var(--font-mono);
  border:1px solid rgba(23,224,160,.32);
  background:rgba(23,224,160,.08);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-title{
  font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;
  letter-spacing:-.02em;padding-left:14px;border-left:3px solid var(--brand);
}
.section-desc{margin-top:14px;color:var(--t-2);font-size:15px;line-height:1.85;max-width:680px}
.section-head.center .section-title{border-left:0;padding-left:0}
.section-head.center .section-desc{margin-left:auto;margin-right:auto}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.24)}
.btn-primary:hover{background:#ff8b47;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,47,.32)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(23,224,160,.45)}
.btn-ghost:hover{background:rgba(23,224,160,.1);border-color:var(--brand);transform:translateY(-1px)}
.btn-dark{background:var(--t-1p);color:#fff}
.btn-dark:hover{background:#1c2530;transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.btn-text::after{content:"→";transition:transform .18s ease}
.btn-text:hover::after{transform:translateX(4px)}

/* ========== 徽章 / 状态 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--line-strong);color:var(--t-2);background:var(--surface-2);
}
.badge-brand{border-color:rgba(23,224,160,.4);background:rgba(23,224,160,.12);color:var(--brand)}
.badge-accent{border-color:rgba(255,122,47,.4);background:rgba(255,122,47,.12);color:#FFA06A}
.badge-tint{border-color:rgba(255,209,102,.4);background:rgba(255,209,102,.12);color:var(--tint)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;flex:none}
.dot.pulse{animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(23,224,160,.5)}50%{box-shadow:0 0 0 6px rgba(23,224,160,0)}}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--t-2);
  border:1px solid var(--line);background:var(--surface);
}

/* ========== 公告条 ========== */
.announce{background:#0A0D12;border-bottom:1px solid var(--line);font-size:13px}
.announce-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:38px;padding:4px 20px;
  max-width:var(--container);margin:0 auto;
}
.announce-left{display:flex;align-items:center;gap:10px;color:var(--t-2);min-width:0}
.announce-left strong{color:var(--t-1);font-weight:600}
.announce-left .tag{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--accent);border:1px solid rgba(255,122,47,.45);
  border-radius:var(--r-pill);padding:2px 8px;flex:none;
}
.announce-left span.txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.countdown{display:flex;align-items:center;gap:8px;flex:none}
.countdown .cd-label{color:var(--t-3);font-size:12px}
.cd-num{
  font-family:var(--font-mono);font-size:13px;color:var(--tint);
  background:rgba(255,209,102,.08);border:1px solid rgba(255,209,102,.3);
  border-radius:6px;padding:1px 7px;min-width:34px;text-align:center;
}
.announce-close{
  background:none;border:0;color:var(--t-3);cursor:pointer;
  font-size:16px;line-height:1;padding:6px;border-radius:6px;flex:none;
}
.announce-close:hover{color:var(--t-1);background:var(--surface-2)}
.announce.hidden{display:none}

/* ========== 导航 ========== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,14,19,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:64px;
}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-d));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(23,224,160,.28);
}
.logo-mark svg{width:17px;height:17px;stroke:#04160F;stroke-width:2}
.logo-text{font-size:16.5px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{
  font-style:normal;font-size:11px;font-weight:600;color:var(--brand);
  border:1px solid rgba(23,224,160,.4);background:rgba(23,224,160,.1);
  border-radius:var(--r-pill);padding:2px 7px;margin-left:6px;vertical-align:2px;
}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:8px 14px;border-radius:8px;
  font-size:14.5px;font-weight:500;color:var(--t-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--t-1);background:var(--surface-2)}
.nav-link.active{color:var(--t-1);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;background:var(--surface-2);border:1px solid var(--line);
  border-radius:9px;width:40px;height:38px;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--t-1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:1.6px;background:var(--t-1);
}
.nav-toggle span::before{top:-5.5px}
.nav-toggle span::after{top:5.5px}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg-0);
  display:none;flex-direction:column;padding:20px;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{background:var(--surface-2);border:1px solid var(--line);color:var(--t-1);width:40px;height:40px;border-radius:10px;font-size:19px;cursor:pointer;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:15px 16px;border-radius:12px;font-size:17px;font-weight:600;
  background:var(--surface);border:1px solid var(--line);color:var(--t-1);
}
.drawer-nav a.active{border-color:rgba(23,224,160,.5);color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
body.locked{overflow:hidden}

/* ========== Hero ========== */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 56px;
  background:
    radial-gradient(760px 420px at 82% -8%,rgba(23,224,160,.14),transparent 68%),
    radial-gradient(620px 380px at 4% 12%,rgba(255,122,47,.1),transparent 70%),
    var(--bg-0);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:linear-gradient(180deg,#000,transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:1.08fr .92fr;
  gap:56px;align-items:center;
}
.hero-title{
  font-size:clamp(34px,5.2vw,60px);font-weight:900;line-height:1.12;
  letter-spacing:-.025em;
}
.hero-title .hl{
  background:linear-gradient(180deg,transparent 66%,rgba(23,224,160,.32) 66%);
  padding:0 2px;
}
.hero-title-sub{
  display:block;margin-top:14px;
  font-size:clamp(17px,2.1vw,25px);font-weight:600;color:var(--t-2);letter-spacing:-.01em;
}
.hero-lead{margin-top:22px;color:var(--t-2);font-size:16.5px;line-height:1.9;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-badges .badge{background:rgba(30,37,49,.7)}
.hero-visual{position:relative}
.hero-shot{
  border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);
  position:relative;box-shadow:0 26px 60px rgba(0,0,0,.55);
}
.hero-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,14,19,0) 42%,rgba(11,14,19,.72) 100%);
}
.hero-shot img{width:100%;height:420px;object-fit:cover}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  display:flex;align-items:center;gap:12px;
  background:rgba(23,28,38,.94);
  border:1px solid rgba(23,224,160,.35);
  border-radius:14px;padding:14px 18px;
  box-shadow:0 14px 34px rgba(0,0,0,.5);
}
.hero-float strong{display:block;font-size:14.5px;font-weight:700}
.hero-float span{display:block;font-size:12.5px;color:var(--t-2)}
.metrics{
  position:relative;margin-top:56px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:16px;overflow:hidden;
}
.metric{background:var(--bg-1);padding:22px 20px}
.metric-num{
  font-family:var(--font-mono);font-size:26px;font-weight:600;color:var(--brand);
  letter-spacing:.02em;line-height:1.2;
}
.metric-label{margin-top:6px;font-size:13px;color:var(--t-3)}

/* ========== 服务卡片（非对称） ========== */
.svc-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:24px}
.svc-side{display:grid;gap:24px;grid-template-rows:repeat(3,1fr)}
.svc-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(23,224,160,.4)}
.svc-feature{
  justify-content:flex-start;
  background:linear-gradient(160deg,rgba(23,224,160,.08),rgba(23,28,38,0) 55%),var(--surface);
  border-color:rgba(23,224,160,.24);
}
.svc-icon{
  width:44px;height:44px;border-radius:12px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(23,224,160,.12);border:1px solid rgba(23,224,160,.3);
  color:var(--brand);margin-bottom:18px;
}
.svc-icon svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.svc-card h3{font-size:18.5px;font-weight:600;line-height:1.5}
.svc-card p{margin-top:10px;color:var(--t-2);font-size:14.5px;line-height:1.8}
.svc-list{margin-top:18px;display:grid;gap:9px}
.svc-list li{position:relative;padding-left:18px;color:var(--t-2);font-size:14px;line-height:1.75}
.svc-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.svc-card .btn-text{margin-top:auto;padding-top:20px}
.svc-figure{
  margin-top:22px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);
}
.svc-figure img{width:100%;height:190px;object-fit:cover}

/* ========== 数据带 ========== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 22px;text-align:center;position:relative;overflow:hidden;
}
.stat::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);opacity:.6;
}
.stat-num{
  font-family:var(--font-mono);font-size:clamp(34px,4.4vw,52px);
  font-weight:600;line-height:1.1;color:var(--t-1);letter-spacing:.01em;
}
.stat-num small{font-size:.42em;color:var(--brand);margin-left:4px;font-weight:500}
.stat-label{margin-top:10px;font-size:14px;color:var(--t-2)}
.stat-note{margin-top:6px;font-size:12.5px;color:var(--t-3)}

/* ========== 案例交替图文 ========== */
.case-list{display:grid;gap:28px}
.case-item{
  display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;padding:0;
}
.case-item:nth-child(even) .case-media{order:2}
.case-media{position:relative;height:100%;min-height:270px}
.case-media img{width:100%;height:100%;object-fit:cover;min-height:270px}
.case-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,14,19,0) 46%,rgba(11,14,19,.7) 100%);
}
.case-body{padding:32px 34px}
.case-body h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.5}
.case-body p{margin-top:12px;color:var(--t-2);font-size:14.5px;line-height:1.85}
.case-result{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.case-result span{
  font-family:var(--font-mono);font-size:12.5px;color:var(--tint);
  border:1px solid rgba(255,209,102,.3);background:rgba(255,209,102,.08);
  border-radius:var(--r-pill);padding:4px 11px;
}

/* ========== 方案对比（浅底） ========== */
.plan-section{background:var(--paper);color:var(--t-1p)}
.plan-section .section-title{color:var(--t-1p)}
.plan-section .section-desc{color:var(--t-2p)}
.plan-section .eyebrow{color:#0a8c66;border-color:rgba(10,140,102,.32);background:rgba(10,140,102,.08)}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan-card{
  background:#fff;border:1px solid #E2E7F0;border-radius:18px;
  padding:28px 26px;position:relative;display:flex;flex-direction:column;
  box-shadow:0 10px 28px rgba(15,30,60,.07);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.plan-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(15,30,60,.12)}
.plan-card.recommend{
  border:1.5px solid var(--brand-d);
  transform:translateY(-10px);
  box-shadow:0 20px 48px rgba(15,181,132,.18);
}
.plan-card.recommend:hover{transform:translateY(-13px)}
.plan-ribbon{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;
  padding:5px 16px;border-radius:var(--r-pill);letter-spacing:.04em;white-space:nowrap;
}
.plan-name{font-size:17px;font-weight:700;color:var(--t-1p)}
.plan-sub{font-size:13px;color:var(--t-2p);margin-top:4px}
.plan-price{
  font-family:var(--font-mono);font-size:34px;font-weight:600;color:var(--t-1p);
  margin:18px 0 4px;letter-spacing:.01em;
}
.plan-price small{font-size:13px;color:var(--t-2p);font-family:var(--font-cn);margin-left:6px;font-weight:400}
.plan-divider{height:1px;background:#E7EBF2;margin:20px 0}
.plan-list{display:grid;gap:11px;margin-bottom:24px}
.plan-list li{position:relative;padding-left:22px;font-size:14px;color:var(--t-2p);line-height:1.7}
.plan-list li::before{
  content:"";position:absolute;left:0;top:8px;width:11px;height:7px;
  border-left:2px solid var(--brand-d);border-bottom:2px solid var(--brand-d);
  transform:rotate(-45deg);border-radius:1px;
}
.plan-card .btn{margin-top:auto;width:100%}
.plan-section .btn-ghost{color:#0a8c66;border-color:rgba(10,140,102,.45)}
.plan-section .btn-ghost:hover{background:rgba(10,140,102,.08)}

/* ========== 内容列表（CMS） ========== */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(23,224,160,.4)}
.post-thumb{position:relative;display:block;overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,14,19,0) 52%,rgba(11,14,19,.78) 100%);
  pointer-events:none;
}
.post-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:12px;font-weight:600;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(11,14,19,.78);border:1px solid rgba(23,224,160,.4);color:var(--brand);
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-title{font-size:17px;font-weight:600;line-height:1.55}
.post-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--brand)}
.post-excerpt{
  margin-top:10px;color:var(--t-2);font-size:14px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--t-3);font-family:var(--font-mono);
}
.post-arrow{color:var(--brand);transition:transform .2s ease;font-family:var(--font-cn)}
.post-card:hover .post-arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-card);
}
.empty-state svg{width:42px;height:42px;stroke:var(--t-3);fill:none;stroke-width:1.4;margin:0 auto 16px}
.empty-state p{color:var(--t-2);font-size:15px;margin-bottom:18px}
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.list-tabs{display:flex;flex-wrap:wrap;gap:8px}
.list-tabs a{
  font-size:13px;padding:6px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--t-2);background:var(--surface);
  transition:all .18s ease;
}
.list-tabs a:hover{color:var(--brand);border-color:rgba(23,224,160,.45)}

/* ========== FAQ ========== */
.faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 44px 22px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--t-1);line-height:1.6;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"";position:absolute;right:6px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/14px 1.6px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/1.6px 14px no-repeat;
  transition:transform .24s ease;
}
.faq-item[open] summary::after{
  transform:rotate(135deg);
}
.faq-item .faq-answer{padding:0 44px 24px 0;color:var(--t-2);font-size:15px;line-height:1.9}

/* ========== 联系区 ========== */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.form-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-card);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--t-2);margin-bottom:8px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-1);border:1px solid var(--line-strong);
  border-radius:var(--r-input);padding:12px 14px;font-size:15px;color:var(--t-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,224,160,.16);
}
.field.error input,.field.error textarea,.field.error select{border-color:var(--err)}
.field .err-msg{display:none;margin-top:6px;font-size:12px;color:var(--err)}
.field.error .err-msg{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--t-2);line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:none}
.form-card .btn{width:100%;margin-top:22px}
.form-note{margin-top:14px;font-size:12.5px;color:var(--t-3);text-align:center}
.info-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;position:sticky;top:88px;
}
.info-card h3{font-size:18px;font-weight:600}
.info-card > p{margin-top:10px;color:var(--t-2);font-size:14.5px;line-height:1.85}
.info-list{margin-top:22px;display:grid;gap:16px}
.info-list li{display:flex;gap:12px;align-items:flex-start}
.info-ico{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(23,224,160,.1);border:1px solid rgba(23,224,160,.28);color:var(--brand);
}
.info-ico svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.info-list strong{display:block;font-size:14px;font-weight:600}
.info-list span{display:block;font-size:13px;color:var(--t-2);line-height:1.7}
.info-status{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t-2);
}

/* ========== CTA 条 ========== */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid rgba(23,224,160,.28);
  padding:52px 44px;
  background:
    linear-gradient(120deg,rgba(11,14,19,.94),rgba(11,14,19,.72)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.4;max-width:640px}
.cta-band p{margin-top:14px;color:var(--t-2);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ========== 页脚 ========== */
.site-footer{background:#080A0E;border-top:1px solid var(--line);margin-top:0;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand) 35%,var(--brand-d) 65%,transparent);
  opacity:.7;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;padding:64px 0 44px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--t-2);font-size:14px;line-height:1.85;max-width:340px}
.footer-status{margin-top:18px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:16px;color:var(--t-1)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--t-2);font-size:14px;transition:color .18s ease}
.footer-col a:hover{color:var(--brand)}
.footer-col li span{color:var(--t-2);font-size:14px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.footer-bottom .mono{color:var(--t-3)}

/* ========== 返回顶部 ========== */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:50;
  width:44px;height:44px;border-radius:12px;
  background:var(--surface-2);border:1px solid var(--line-strong);color:var(--brand);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .24s ease;font-size:17px;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--brand);background:rgba(23,224,160,.12)}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-shot img{height:340px}
  .hero-float{left:16px}
  .svc-grid{grid-template-columns:1fr}
  .svc-side{grid-template-rows:auto;grid-template-columns:1fr 1fr}
  .svc-side .svc-card:last-child{grid-column:1/-1}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .case-item{grid-template-columns:1fr}
  .case-item:nth-child(even) .case-media{order:0}
  .case-media,.case-media img{min-height:230px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr;gap:26px;max-width:560px;margin:0 auto}
  .plan-card.recommend{transform:none}
  .contact-grid{grid-template-columns:1fr}
  .info-card{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:860px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .status-pill{display:none}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .hero{padding:52px 0 40px}
  .hero-shot img{height:270px}
  .hero-float{left:12px;bottom:14px;padding:11px 14px}
  .metrics{grid-template-columns:repeat(2,1fr);margin-top:40px}
  .svc-side{grid-template-columns:1fr}
  .svc-side .svc-card:last-child{grid-column:auto}
  .case-body{padding:24px 22px}
  .post-grid{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .form-row{grid-template-columns:1fr}
  .cta-band{padding:36px 24px}
  .plan-section .section-desc{max-width:100%}
  .announce-inner{padding:6px 16px}
  .announce-left span.txt{max-width:150px}
  .countdown .cd-label{display:none}
}
@media (max-width:520px){
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 34px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#0B0E13;
  --bg-1:#12161F;
  --surface:#171C26;
  --surface-2:#1E2531;
  --line:rgba(255,255,255,.08);
  --line-strong:#2A3444;
  --brand:#17E0A0;
  --brand-d:#0FB584;
  --accent:#FF7A2F;
  --tint:#FFD166;
  --t-1:#F2F5F9;
  --t-2:#A8B3C4;
  --t-3:#6C7889;
  --ok:#17E0A0;
  --warn:#FFB020;
  --err:#FF5B5B;
  --info:#4CC3FF;
  --paper:#F4F6FA;
  --t-1p:#0B0E13;
  --t-2p:#495568;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 14px 36px rgba(23,224,160,.14);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--t-1);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;letter-spacing:-.01em;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,14,19,.86);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(23,224,160,.22),rgba(23,224,160,.04));
  border:1px solid rgba(23,224,160,.42);
  box-shadow:inset 0 0 12px rgba(23,224,160,.16);
}
.logo-mark svg{width:20px;height:20px;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{
  font-style:normal;font-size:11px;font-weight:700;margin-left:6px;padding:2px 7px;
  border-radius:999px;color:var(--brand);background:rgba(23,224,160,.12);
  border:1px solid rgba(23,224,160,.32);vertical-align:2px;letter-spacing:.06em;
}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:8px 13px;border-radius:9px;font-size:14.5px;color:var(--t-2);
  transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.nav-link.active{color:var(--brand);background:rgba(23,224,160,.1)}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--surface);
  font-size:12px;color:var(--t-2);white-space:nowrap;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;flex:0 0 auto}
.dot.pulse{animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(23,224,160,.5)}50%{opacity:.55;box-shadow:0 0 0 5px rgba(23,224,160,0)}}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;cursor:pointer;
  border:1px solid var(--line-strong);background:var(--surface);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;border-radius:2px;background:var(--t-1);
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-5px}
.nav-toggle span::after{content:"";top:5px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) translateY(5px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) translateY(-5px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14.5px;font-weight:700;cursor:pointer;letter-spacing:.01em;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.26)}
.btn-primary:hover{background:#FF8B4A;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,47,.32)}
.btn-ghost{border-color:rgba(23,224,160,.5);color:var(--brand);background:rgba(23,224,160,.04)}
.btn-ghost:hover{background:rgba(23,224,160,.12);transform:translateY(-1px)}
.btn-dark{background:var(--t-1p);color:#fff}
.btn-dark:hover{background:#22303f;transform:translateY(-1px)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:9px}
.btn-outline-dark{border-color:rgba(11,14,19,.2);color:var(--t-1p);background:transparent}
.btn-outline-dark:hover{background:rgba(11,14,19,.06)}
.link-more{color:var(--brand);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link-more svg{width:15px;height:15px;transition:transform .2s ease}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;padding:44px 0 36px;
  background-image:linear-gradient(180deg,rgba(11,14,19,.85),rgba(11,14,19,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:22px}
.breadcrumb a{color:var(--t-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--t-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:880px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  padding:5px 11px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);color:var(--t-2);letter-spacing:.04em;
}
.badge-brand{color:var(--brand);border-color:rgba(23,224,160,.4);background:rgba(23,224,160,.1)}
.badge-accent{color:var(--accent);border-color:rgba(255,122,47,.4);background:rgba(255,122,47,.1)}
.article-head h1{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.32}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:18px;font-size:12.5px;color:var(--t-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.meta-sep{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.rule-line{height:1px;margin-top:28px;background:linear-gradient(90deg,var(--brand),rgba(23,224,160,.15),transparent)}

/* ---------- layout ---------- */
.article-wrap{padding:56px 0 0}
.lay{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:52px;align-items:start}
.article-main{max-width:780px;min-width:0}

/* ---------- article body ---------- */
.article-body{color:#DCE3EC;font-size:16.5px;line-height:1.9}
.article-body>*+*{margin-top:1.15em}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;
  margin:2em 0 .8em;padding-left:14px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:18.5px;font-weight:600;color:var(--t-1);margin:1.7em 0 .6em}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--t-1);margin:1.4em 0 .5em}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(23,224,160,.4)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{color:#fff;font-weight:700}
.article-body ul{margin:0 0 1.3em}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
.article-body ol{list-style:decimal;padding-left:1.3em;margin:0 0 1.3em}
.article-body ol li{margin-bottom:.55em;padding-left:4px}
.article-body ol li::marker{color:var(--brand);font-family:var(--font-mono);font-weight:700}
.article-body blockquote{
  margin:1.7em 0;padding:16px 20px;background:var(--surface);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.7em 0;border:1px solid var(--line)}
.article-body figure{margin:1.7em 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:12px;color:var(--t-3);margin-top:10px;text-align:center}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{background:var(--surface-2);color:var(--t-1);font-weight:700;text-align:left}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line)}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;padding:2px 6px;border-radius:6px;
  background:var(--surface-2);color:var(--tint);
}
.article-body pre{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-family:var(--font-mono);font-size:13.5px;line-height:1.7;
}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:88px;display:grid;gap:18px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-card h3{font-size:14px;font-weight:700;color:var(--t-2);letter-spacing:.08em;margin-bottom:14px;text-transform:uppercase}
.toc-list{display:grid;gap:2px}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--t-2);
  border-left:2px solid transparent;transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(23,224,160,.08)}
.side-links{display:grid;gap:10px}
.side-links a{
  display:flex;align-items:flex-start;gap:10px;padding:12px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface-2);transition:border-color .2s ease,transform .2s ease;
}
.side-links a:hover{border-color:rgba(23,224,160,.45);transform:translateY(-2px)}
.side-links .num{
  font-family:var(--font-mono);font-size:12px;color:var(--brand);flex:0 0 auto;
  border:1px solid rgba(23,224,160,.35);border-radius:6px;padding:1px 5px;margin-top:3px;
}
.side-links b{display:block;font-size:13.5px;font-weight:700;color:var(--t-1);line-height:1.6}
.side-links small{display:block;font-size:12px;color:var(--t-3);margin-top:3px;line-height:1.6}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:44px;height:44px;stroke:var(--t-3);stroke-width:1.4;fill:none;margin:0 auto 16px}
.empty-state p{color:var(--t-2);margin-bottom:18px}

/* ---------- article footer ---------- */
.article-tail{margin-top:44px;display:grid;gap:26px}
.tail-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tail-tags .label{font-size:12.5px;color:var(--t-3);letter-spacing:.06em}
.pager{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:18px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
}
.pager-info{font-size:13.5px;color:var(--t-3)}

/* ---------- sections ---------- */
.section{padding:76px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;padding-left:14px;border-left:3px solid var(--brand)}
.section-head p{color:var(--t-2);font-size:14.5px;margin-top:10px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  font-family:var(--font-mono);color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}

/* ---------- cta band (paper) ---------- */
.cta-band{
  background:var(--paper);color:var(--t-1p);border-radius:20px;padding:38px 40px;
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
  border:1px solid rgba(11,14,19,.06);box-shadow:0 18px 40px rgba(0,0,0,.35);
}
.cta-band h2{font-size:clamp(20px,2.3vw,27px);font-weight:800;color:var(--t-1p)}
.cta-band p{color:var(--t-2p);font-size:15px;margin-top:12px;max-width:620px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px;font-size:12.5px;color:var(--t-2p)}
.cta-note span{display:inline-flex;align-items:center;gap:7px}
.cta-note i{width:6px;height:6px;border-radius:50%;background:var(--brand-d);display:inline-block}

/* ---------- related cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(23,224,160,.4)}
.post-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,#1B2230,#101620)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-cover::after{
  content:"";position:absolute;inset:auto 0 0 0;height:62%;
  background:linear-gradient(180deg,transparent,rgba(11,14,19,.85));
}
.post-cover .badge{position:absolute;left:14px;top:14px;z-index:2}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:11px;flex:1}
.post-body h3{font-size:17px;font-weight:700;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:14px;line-height:1.75;color:var(--t-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--t-3)}
.post-foot svg{width:15px;height:15px;stroke:var(--brand);stroke-width:1.8;fill:none;transition:transform .2s ease}
.post-card:hover .post-foot svg{transform:translateX(4px)}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--t-1);line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;position:relative;
  border:1px solid var(--line-strong);transition:border-color .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--t-2);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .25s ease,background .2s ease;
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.open .faq-icon{border-color:rgba(23,224,160,.5);background:rgba(23,224,160,.1)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--brand)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--t-2)}

/* ---------- feedback form ---------- */
.feedback-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:28px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--t-2);margin-bottom:8px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-1);border:1px solid var(--line-strong);border-radius:var(--r-btn);
  padding:11px 13px;font-size:14.5px;color:var(--t-1);transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,224,160,.18);
}
.field textarea{min-height:118px;resize:vertical;line-height:1.8}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--t-3);margin:6px 0 18px}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand)}
.form-tip{font-size:13px;color:var(--brand);min-height:20px;margin-top:12px}
.info-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px}
.info-card h3{font-size:16px;font-weight:700;margin-bottom:14px}
.info-list{display:grid;gap:12px}
.info-list div{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--t-2);border-bottom:1px dashed var(--line);padding-bottom:12px}
.info-list div:last-child{border-bottom:0;padding-bottom:0}
.info-list b{color:var(--t-1);font-weight:600;font-family:var(--font-mono);font-size:13px}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:20px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:var(--t-2);font-size:14px;line-height:1.85;margin-top:16px;max-width:360px}
.footer-status{margin-top:16px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:11px}
.footer-col li a,.footer-col li span{font-size:13.5px;color:var(--t-2);transition:color .2s ease}
.footer-col li a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--t-3);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:14px;z-index:55;
  display:grid;place-items:center;cursor:pointer;
  background:rgba(23,224,160,.12);border:1px solid rgba(23,224,160,.45);color:var(--brand);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .2s ease;
}
.to-top svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:rgba(23,224,160,.22)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .lay{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{display:none}
  .article-main{max-width:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feedback-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
}
@media (max-width:767px){
  .nav-menu{
    position:fixed;left:0;right:0;top:56px;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:2px;padding:16px 16px 96px;
    background:var(--bg-1);border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;visibility:hidden;overflow-y:auto;
    transition:transform .26s ease,opacity .26s ease,visibility .26s ease;
  }
  body.nav-open .nav-menu{transform:none;opacity:1;visibility:visible}
  .nav-link{padding:15px 12px;font-size:16px;border-radius:10px;border-bottom:1px solid var(--line)}
  .nav-link.active::after{display:none}
  .nav-toggle{display:block}
  .nav-inner{height:56px;gap:12px}
  .status-pill{display:none}
  .logo-text{font-size:15px}
  .article-hero{padding:30px 0 28px}
  .breadcrumb{font-size:12px;margin-bottom:16px}
  .article-body{font-size:16px}
  .section{padding:52px 0}
  .section-tight{padding:44px 0}
  .cta-band{padding:26px 20px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .section-head{margin-bottom:26px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .faq-q{font-size:15.5px;padding:17px 0}
  .pager{padding:16px}
}
@media (max-width:520px){
  .logo-text em{display:none}
  .footer-bottom{flex-direction:column;gap:6px}
  .to-top{right:14px;bottom:14px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}

/* roulang page: category1 */
:root{
  --brand:#0FB584;
  --brand-d:#0A8F69;
  --brand-soft:#E6F8F1;
  --accent:#FF7A2F;
  --accent-soft:#FFF1E7;
  --tint:#FFB020;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --surface-2:#EDF3F8;
  --dark:#101B24;
  --line:#E4EAF1;
  --line-strong:#CFDAE6;
  --t-1:#0F1720;
  --t-2:#4B5765;
  --t-3:#7D8998;
  --radius-lg:22px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-1:0 2px 10px rgba(15,23,32,.05);
  --shadow-2:0 14px 36px rgba(15,23,32,.10);
  --shadow-brand:0 14px 34px rgba(15,181,132,.18);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,"Courier New",monospace;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--t-1);
  background:var(--bg);
  letter-spacing:-0.01em;
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block;border-radius:14px}
a{color:var(--brand-d);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-0.015em}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
svg{display:block}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px}}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0}

/* ---------- 顶部公告条 ---------- */
.topbar{
  background:var(--dark);
  color:#C7D4E2;
  font-size:13px;
}
.topbar .container{
  display:flex;align-items:center;gap:14px;
  min-height:38px;padding-top:6px;padding-bottom:6px;
}
.topbar .tb-dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  flex:0 0 auto;box-shadow:0 0 0 3px rgba(15,181,132,.18);
}
.topbar p{flex:1 1 auto;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar .tb-code{
  font-family:var(--mono);font-size:12px;color:#9FB0C2;
  border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:2px 12px;
  white-space:nowrap;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(15,23,32,.02);
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  min-height:68px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--t-1);flex:0 0 auto;
}
.logo:hover{color:var(--t-1)}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#37D6A6);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(15,181,132,.28);
}
.logo-mark svg{width:21px;height:21px}
.logo-mark svg path{
  stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;fill:none;
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-0.02em;white-space:nowrap}
.logo-text em{
  font-style:normal;font-size:11px;font-weight:700;color:var(--brand-d);
  background:var(--brand-soft);border-radius:999px;padding:2px 7px;margin-left:6px;
  vertical-align:2px;letter-spacing:.04em;
}

.nav-menu{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-link{
  position:relative;
  padding:9px 13px;border-radius:10px;
  color:var(--t-2);font-size:15px;font-weight:600;
  white-space:nowrap;
}
.nav-link:hover{color:var(--t-1);background:var(--surface-2)}
.nav-link.active{color:var(--brand-d);background:var(--brand-soft)}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  border-radius:2px;background:var(--brand);
}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;color:var(--brand-d);
  background:var(--brand-soft);border:1px solid rgba(15,181,132,.22);
  border-radius:999px;padding:5px 12px;white-space:nowrap;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;flex:0 0 auto}
.dot.pulse{animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(15,181,132,.45)}
  50%{box-shadow:0 0 0 6px rgba(15,181,132,0)}
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;font-weight:700;font-size:15px;
  padding:12px 22px;line-height:1.2;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.26)}
.btn-primary:hover{background:#FF8B47;color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,47,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand-d);border-color:rgba(15,181,132,.4)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-d);border-color:var(--brand);transform:translateY(-1px)}
.btn-ghost{background:var(--surface-2);color:var(--t-1)}
.btn-ghost:hover{background:#E3EBF3;color:var(--t-1)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:12px}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line-strong);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-1);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3)}
.breadcrumb a{color:var(--t-2)}
.breadcrumb a:hover{color:var(--brand-d)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--t-3)}

/* ---------- Hero ---------- */
.page-hero{padding:26px 0 0}
.hero-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:
    linear-gradient(115deg,rgba(255,255,255,.97) 42%,rgba(255,255,255,.86) 68%,rgba(230,248,241,.72) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  box-shadow:var(--shadow-2);
}
.hero-card .hero-inner{
  padding:52px 48px 46px;
  max-width:760px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid rgba(15,181,132,.28);
  color:var(--brand-d);font-size:12.5px;font-weight:700;
  border-radius:999px;padding:6px 14px;margin-bottom:20px;
  font-family:var(--mono);letter-spacing:.04em;
}
.hero-card h1{
  font-size:clamp(29px,4.2vw,44px);
  font-weight:800;letter-spacing:-0.03em;line-height:1.2;
}
.hero-card h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(15,181,132,.24) 62%);
  padding:0 2px;
}
.hero-sub{
  margin-top:18px;font-size:16.5px;color:var(--t-2);max-width:620px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-badges{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;padding-top:24px;
  border-top:1px dashed var(--line-strong);
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;color:var(--t-2);
  background:rgba(255,255,255,.85);border:1px solid var(--line);
  border-radius:999px;padding:6px 13px;
}
.chip .mono{color:var(--brand-d);font-weight:700}

/* ---------- 通用区块 ---------- */
main{display:block}
.section{padding:76px 0 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-eyebrow{
  display:inline-block;font-family:var(--mono);font-size:12px;font-weight:700;
  color:var(--brand-d);background:var(--brand-soft);
  border-radius:999px;padding:4px 12px;letter-spacing:.08em;text-transform:uppercase;
  margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.7vw,32px);font-weight:800;letter-spacing:-0.025em}
.section-head h2::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),#5EE0BA);
  margin-right:12px;vertical-align:-2px;
}
.section-head p{margin-top:12px;color:var(--t-2);font-size:15.5px}

/* ---------- 主体两栏 ---------- */
.content-layout{
  display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;align-items:start;
}
.side-nav{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);
}
.side-nav h3{
  font-size:12.5px;font-weight:700;color:var(--t-3);
  letter-spacing:.1em;font-family:var(--mono);margin-bottom:14px;
}
.side-nav ul{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:block;padding:9px 12px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--t-2);
  border-left:2px solid transparent;
}
.side-nav a:hover{background:var(--surface-2);color:var(--t-1)}
.side-nav a.is-active{
  background:var(--brand-soft);color:var(--brand-d);
  border-left-color:var(--brand);
}
.side-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-strong);
  font-size:13px;color:var(--t-3);line-height:1.7;
}

/* ---------- 行式内容流 ---------- */
.stream{display:flex;flex-direction:column;gap:18px}
.row-item{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  scroll-margin-top:110px;
}
.row-item:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(15,181,132,.35);
}
.row-icon{
  width:56px;height:56px;border-radius:15px;
  background:linear-gradient(150deg,var(--brand-soft),#F7FDFB);
  border:1px solid rgba(15,181,132,.2);
  display:flex;align-items:center;justify-content:center;
}
.row-icon svg{width:26px;height:26px}
.row-icon svg path,.row-icon svg circle,.row-icon svg rect{
  stroke:var(--brand-d);stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;
}
.row-body h3{font-size:18.5px;font-weight:700}
.row-body p{margin-top:9px;font-size:14.8px;color:var(--t-2);line-height:1.85}
.row-body .row-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;
}
.mini-tag{
  font-size:12px;font-weight:600;color:var(--t-2);
  background:var(--surface-2);border-radius:999px;padding:3px 11px;
}
.mini-tag.brand{background:var(--brand-soft);color:var(--brand-d)}
.row-link{
  align-self:center;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-d);white-space:nowrap;
}
.row-link svg{width:16px;height:16px;transition:transform .2s ease}
.row-link svg path{stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.row-item:hover .row-link svg{transform:translateX(4px)}

/* ---------- 步骤条 ---------- */
.steps-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:38px 34px;box-shadow:var(--shadow-1);
}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
  position:relative;padding:22px 20px;border-radius:var(--radius);
  background:var(--surface-2);border:1px solid transparent;
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--brand-d);
  display:block;margin-bottom:10px;letter-spacing:.08em;
}
.step h3{font-size:16px;font-weight:700}
.step p{margin-top:8px;font-size:13.8px;color:var(--t-2);line-height:1.75}
.step-bar{
  height:6px;border-radius:999px;background:linear-gradient(90deg,var(--brand),#63E3BE);
  margin-bottom:16px;width:34px;
}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  background:var(--dark);border-radius:var(--radius-lg);padding:36px 34px;
  position:relative;overflow:hidden;
}
.metrics::after{
  content:"";position:absolute;inset:auto -60px -120px auto;width:320px;height:320px;
  background:radial-gradient(circle,rgba(15,181,132,.35),transparent 65%);
  pointer-events:none;
}
.metric{position:relative;z-index:1}
.metric .num{
  font-family:var(--mono);font-size:clamp(28px,3.4vw,44px);font-weight:700;
  color:#fff;line-height:1.1;letter-spacing:-0.02em;
}
.metric .num em{font-style:normal;font-size:14px;color:#8FE9CC;margin-left:5px}
.metric .lab{margin-top:10px;font-size:13.5px;color:#9FB0C2;line-height:1.6}

/* ---------- 环境要求 ---------- */
.env-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.env-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.env-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.env-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.env-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.env-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,27,36,.05) 40%,rgba(16,27,36,.62) 100%);
}
.env-card .thumb .thumb-badge{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-size:12.5px;font-weight:700;color:#fff;
  background:rgba(16,27,36,.55);border:1px solid rgba(255,255,255,.25);
  border-radius:999px;padding:5px 13px;backdrop-filter:blur(4px);
}
.env-card .body{padding:24px 26px 26px}
.env-card h3{font-size:19px;font-weight:700}
.env-card .body>p{margin-top:10px;font-size:14.6px;color:var(--t-2)}
.spec-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.spec-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.2px;color:var(--t-2);line-height:1.7;
}
.spec-list li::before{
  content:"";width:7px;height:7px;border-radius:2px;background:var(--brand);
  flex:0 0 auto;margin-top:8px;
}
.spec-list li b{color:var(--t-1);font-weight:700}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-list{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--t-1);
  transition:background .18s ease;
}
.faq-q:hover{background:var(--surface-2)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;position:relative;
  background:var(--brand-soft);transition:transform .25s ease,background .25s ease;
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-d);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:12px;height:2px}
.faq-q .sign::after{width:2px;height:12px;transition:opacity .25s ease}
.faq-item.open .faq-q{background:var(--brand-soft);color:var(--brand-d)}
.faq-item.open .faq-q .sign{background:#fff;transform:rotate(180deg)}
.faq-item.open .faq-q .sign::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{
  padding:0 26px 24px;font-size:15px;color:var(--t-2);line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(15,181,132,.28);
  background:linear-gradient(120deg,#E6F8F1 0%,#F2FBF8 45%,#FFF1E7 100%);
  padding:46px 44px;
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-card::before{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.18),transparent 68%);
}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);font-weight:800}
.cta-text p{margin-top:12px;font-size:15.4px;color:var(--t-2)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:var(--dark);color:#A9B8C7;
  border-top:3px solid transparent;
  background-image:linear-gradient(var(--dark),var(--dark)),linear-gradient(90deg,var(--brand),var(--accent));
  background-origin:border-box;background-clip:padding-box,border-box;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand .logo{color:#fff}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text em{background:rgba(15,181,132,.2);color:#7EE7C7}
.footer-brand p{
  margin-top:16px;font-size:14.2px;color:#93A3B4;line-height:1.85;max-width:330px;
}
.footer-status{margin-top:18px}
.footer-status .status-pill{
  background:rgba(15,181,132,.14);border-color:rgba(15,181,132,.3);color:#7EE7C7;
}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:#93A3B4}
.footer-col a{color:#93A3B4}
.footer-col a:hover{color:#7EE7C7}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 0 28px;font-size:13px;color:#7C8B9B;
}
.footer-bottom .mono{color:#8FA0B0}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:80;
  width:44px;height:44px;border-radius:14px;
  background:#fff;border:1px solid var(--line-strong);
  box-shadow:var(--shadow-2);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px)}
.to-top svg{width:18px;height:18px}
.to-top svg path{stroke:var(--brand-d);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-inner{gap:18px}
  .nav-link{padding:9px 10px;font-size:14.4px}
  .content-layout{grid-template-columns:1fr;gap:28px}
  .side-nav{
    position:static;padding:14px;
  }
  .side-nav h3{display:none}
  .side-nav ul{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .side-nav a{white-space:nowrap;border-left:0;border:1px solid var(--line);padding:8px 14px;font-size:13.6px}
  .side-nav a.is-active{border-color:rgba(15,181,132,.4)}
  .side-note{display:none}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}

@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-menu{
    position:fixed;inset:0 0 0 auto;width:min(320px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 22px 28px;box-shadow:-16px 0 40px rgba(15,23,32,.16);
    transform:translateX(102%);transition:transform .28s ease;z-index:95;
    overflow-y:auto;
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-link{font-size:16px;padding:13px 14px}
  .nav-link.active::after{left:14px;right:auto;width:22px;bottom:8px}
  .nav-actions .status-pill{display:none}
  .nav-actions .btn-sm{padding:9px 14px;font-size:13.5px}
}

@media (max-width:768px){
  .container{padding:0 16px}
  .topbar .tb-code{display:none}
  .hero-card .hero-inner{padding:36px 24px 34px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .section{padding:56px 0 0}
  .section-head{margin-bottom:26px}
  .row-item{grid-template-columns:44px minmax(0,1fr);gap:16px;padding:20px}
  .row-icon{width:44px;height:44px;border-radius:12px}
  .row-icon svg{width:22px;height:22px}
  .row-link{grid-column:2;justify-self:start;align-self:start;margin-top:12px}
  .row-body h3{font-size:17px}
  .steps-card{padding:26px 20px}
  .metrics{padding:28px 22px}
  .env-grid{grid-template-columns:1fr}
  .cta-card{padding:32px 22px}
  .cta-actions .btn{flex:1 1 auto;justify-content:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 30px}
  .footer-brand{grid-column:1/-1}
  .faq-q{padding:18px 20px;font-size:15.6px}
  .faq-a p{padding:0 20px 20px;font-size:14.6px}
  .site-footer{margin-top:64px}
}

@media (max-width:520px){
  .hero-badges{gap:8px}
  .chip{font-size:12px;padding:5px 11px}
  .steps{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr;gap:20px}
  .metric .num{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .logo-text{font-size:15.5px}
  .logo-text em{font-size:10px}
}

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

/* roulang page: category2 */
:root{
  --bg-0:#0B0E13; --bg-1:#12161F; --surface:#171C26; --surface-2:#1E2531;
  --line:rgba(255,255,255,.08); --line-strong:#2A3444;
  --brand:#17E0A0; --brand-d:#0FB584; --accent:#FF7A2F; --tint:#FFD166;
  --t-1:#F2F5F9; --t-2:#A8B3C4; --t-3:#6C7889;
  --ok:#17E0A0; --warn:#FFB020; --err:#FF5B5B; --info:#4CC3FF;
  --paper:#F4F6FA; --t-1p:#0B0E13; --t-2p:#495568;
  --r-card:16px; --r-img:14px; --r-btn:10px; --r-input:10px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 14px 36px rgba(23,224,160,.14);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --maxw:1200px;
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg-0);color:var(--t-1);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  letter-spacing:-0.01em;
  background-image:radial-gradient(900px 420px at 82% -8%,rgba(23,224,160,.10),transparent 62%),
                   radial-gradient(700px 340px at 6% 6%,rgba(255,122,47,.07),transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:-0.01em;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:var(--font-mono);letter-spacing:.06em;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:var(--sp-section) 0;}
.section.tight{padding:60px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;padding-left:14px;border-left:3px solid var(--brand);}
.section-head p{color:var(--t-2);font-size:15px;max-width:620px;margin-top:10px;padding-left:17px;}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);}
.link-more{color:var(--brand);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease;}
.link-more:hover{gap:10px;color:#4CF0BC;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,122,47,.24);}
.btn-primary:hover{background:#FF8C4A;transform:translateY(-1px);}
.btn-ghost{border-color:rgba(23,224,160,.5);color:var(--brand);background:rgba(23,224,160,.06);}
.btn-ghost:hover{background:rgba(23,224,160,.14);transform:translateY(-1px);}
.btn-dark{background:var(--t-1p);color:#fff;}
.btn-dark:hover{background:#1c2430;}
.btn-block{width:100%;}

/* ---------- 状态徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;line-height:1.7;border:1px solid var(--line-strong);color:var(--t-2);
  background:rgba(255,255,255,.03);
}
.badge.brand{color:var(--brand);border-color:rgba(23,224,160,.4);background:rgba(23,224,160,.1);}
.badge.accent{color:var(--accent);border-color:rgba(255,122,47,.42);background:rgba(255,122,47,.1);}
.badge.tint{color:var(--tint);border-color:rgba(255,209,102,.4);background:rgba(255,209,102,.1);}
.status-pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:999px;
  font-size:12.5px;color:var(--t-2);border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;}
.dot.pulse{box-shadow:0 0 0 0 rgba(23,224,160,.6);animation:pulse 2.2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(23,224,160,.55);}
  70%{box-shadow:0 0 0 9px rgba(23,224,160,0);}
  100%{box-shadow:0 0 0 0 rgba(23,224,160,0);}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,14,19,.85);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(23,224,160,.2),rgba(255,122,47,.12));
  border:1px solid rgba(23,224,160,.36);
}
.logo-mark svg{width:18px;height:18px;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--t-1);display:inline-flex;align-items:center;gap:6px;}
.logo-text em{
  font-style:normal;font-size:11px;font-weight:700;color:var(--brand);
  border:1px solid rgba(23,224,160,.42);background:rgba(23,224,160,.1);
  border-radius:999px;padding:1px 7px;letter-spacing:.04em;
}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--t-2);
  transition:color .18s ease,background .18s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%) scaleX(0);
  width:18px;height:2px;border-radius:2px;background:var(--brand);transition:transform .22s ease;
}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--t-1);font-weight:600;}
.nav-link.active::after{transform:translateX(-50%) scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);position:relative;background:rgba(255,255,255,.03);}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);width:17px;height:2px;background:var(--t-1);border-radius:2px;transition:.2s ease;
}
.nav-toggle span{top:19px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(11,14,19,.96) 0%,rgba(11,14,19,.86) 42%,rgba(11,14,19,.6) 100%),
                   url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(23,224,160,.16) 1px,transparent 1px);
  background-size:32px 32px;opacity:.28;
  -webkit-mask-image:linear-gradient(120deg,transparent 30%,#000 100%);
  mask-image:linear-gradient(120deg,transparent 30%,#000 100%);
}
.hero-inner{position:relative;z-index:2;padding:52px 0 64px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--t-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--t-3);}
.hero h1{font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.2;}
.hero h1 mark{background:none;color:var(--brand);}
.hero-sub{color:var(--t-2);font-size:16px;line-height:1.9;margin-top:18px;max-width:600px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-panel{
  background:linear-gradient(180deg,rgba(30,37,49,.92),rgba(23,28,38,.92));
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:24px;position:relative;overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.9;
}
.hero-panel h3{font-size:17px;font-weight:700;margin-bottom:18px;}
.spec-list{display:grid;gap:14px;}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px dashed var(--line-strong);}
.spec-row:last-child{border-bottom:0;padding-bottom:0;}
.spec-row .k{font-size:13px;color:var(--t-3);}
.spec-row .v{font-family:var(--font-mono);font-size:14.5px;color:var(--t-1);letter-spacing:.06em;}
.spec-row .v.brand{color:var(--brand);}

/* ---------- Tab 筛选 ---------- */
.tabbar-wrap{border-bottom:1px solid var(--line);background:var(--bg-1);}
.tabbar{display:flex;gap:8px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.tabbar::-webkit-scrollbar{display:none;}
.tab-btn{
  padding:9px 18px;border-radius:999px;font-size:14px;color:var(--t-2);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);white-space:nowrap;
  transition:all .2s ease;
}
.tab-btn:hover{color:var(--t-1);border-color:rgba(23,224,160,.4);}
.tab-btn.active{color:#06231A;background:var(--brand);border-color:var(--brand);font-weight:700;}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(23,224,160,.4);}
.card.hide{display:none;}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,rgba(23,224,160,.18),rgba(255,122,47,.14));}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,14,19,0) 45%,rgba(11,14,19,.78) 100%);}
.card-media .tag-abs{position:absolute;left:14px;top:14px;z-index:2;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.card-body p{color:var(--t-2);font-size:14.5px;line-height:1.75;flex:1;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);}
.card-foot .meta{font-family:var(--font-mono);font-size:12.5px;color:var(--t-3);letter-spacing:.06em;}
.card-foot .arrow{color:var(--brand);transition:transform .2s ease;font-size:15px;}
.card:hover .card-foot .arrow{transform:translateX(4px);}

/* ---------- 数据指标带 ---------- */
.metrics{
  background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(23,224,160,.05),transparent 70%);
}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:52px 0;}
.metric{border-left:1px solid var(--line-strong);padding-left:20px;}
.metric:first-child{border-left:0;padding-left:0;}
.metric .num{font-family:var(--font-mono);font-size:clamp(30px,4vw,46px);font-weight:700;color:var(--t-1);letter-spacing:.02em;line-height:1.1;}
.metric .num em{font-style:normal;font-size:15px;color:var(--brand);margin-left:6px;letter-spacing:.06em;}
.metric .lbl{color:var(--t-2);font-size:14px;margin-top:10px;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.flow::before{
  content:"";position:absolute;left:0;right:0;top:26px;height:1px;
  background:linear-gradient(90deg,rgba(23,224,160,.7),rgba(255,122,47,.45),rgba(23,224,160,.12));
}
.flow-step{position:relative;padding-top:60px;}
.flow-step .idx{
  position:absolute;top:0;left:0;width:52px;height:52px;border-radius:14px;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:16px;
  color:var(--brand);background:var(--surface);border:1px solid rgba(23,224,160,.36);
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.flow-step p{color:var(--t-2);font-size:14.5px;line-height:1.75;}

/* ---------- 对照表 ---------- */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px;}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);}
table.compare thead th{background:var(--surface-2);color:var(--t-1);font-weight:600;font-size:14px;letter-spacing:.02em;}
table.compare tbody td{color:var(--t-2);}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody td:first-child{color:var(--t-1);font-weight:600;}
table.compare .mono-cell{font-family:var(--font-mono);letter-spacing:.06em;color:var(--brand);}
.tick{color:var(--brand);font-weight:700;}
.cross{color:var(--t-3);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--t-1);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .ico{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--brand);font-size:15px;transition:transform .25s ease,background .25s ease;
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:rgba(23,224,160,.12);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 4px 24px;color:var(--t-2);font-size:15px;line-height:1.9;max-width:760px;}

/* ---------- CTA / 表单 ---------- */
.cta-band{
  background:var(--paper);color:var(--t-1p);border-radius:24px;padding:52px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:var(--t-1p);padding-left:14px;border-left:3px solid var(--brand-d);}
.cta-band .lead{color:var(--t-2p);font-size:15px;margin-top:16px;line-height:1.85;}
.cta-points{margin-top:24px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--t-2p);}
.cta-points li b{color:var(--t-1p);font-weight:600;}
.cta-points .mark{color:var(--brand-d);font-weight:700;line-height:1.6;}
.form-grid{display:grid;gap:16px;}
.field{display:grid;gap:7px;}
.field label{font-size:13.5px;color:var(--t-2p);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  background:#fff;border:1px solid #D7DDE8;color:var(--t-1p);font-size:14.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-d);box-shadow:0 0 0 3px rgba(15,181,132,.18);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--t-2p);}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand-d);}
.form-note{font-size:13px;color:var(--t-2p);}
.form-ok{
  display:none;padding:12px 16px;border-radius:var(--r-input);
  background:rgba(15,181,132,.12);border:1px solid rgba(15,181,132,.4);
  color:#0A6B4D;font-size:14px;
}
.form-ok.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);position:relative;padding-top:56px;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent),transparent);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand p{color:var(--t-2);font-size:14.5px;line-height:1.85;margin-top:16px;max-width:420px;}
.footer-status{margin-top:18px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{color:var(--t-2);font-size:14px;transition:color .18s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--t-3);font-size:13px;
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  :root{--maxw:1200px;}
}
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:44px 0 52px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:28px;padding:44px 0;}
  .metric{border-left:0;padding-left:0;}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px;}
  .flow::before{display:none;}
  .cta-band{grid-template-columns:1fr;padding:40px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sp-section:52px;}
  .container{padding:0 16px;}
  .nav-inner{height:56px;}
  .nav-toggle{display:block;}
  .nav-menu{
    position:fixed;inset:56px 0 0 0;z-index:70;
    background:rgba(11,14,19,.98);backdrop-filter:blur(10px);
    flex-direction:column;align-items:stretch;gap:6px;padding:22px 16px 32px;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
    overflow-y:auto;
  }
  .nav-menu.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{font-size:16px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link.active{border-color:rgba(23,224,160,.42);background:rgba(23,224,160,.08);}
  .nav-actions .status-pill{display:none;}
  .hero h1{font-size:clamp(24px,6vw,30px);}
  .hero-cta .btn{flex:1 1 auto;}
  .grid-3{grid-template-columns:1fr;}
  .metrics-grid{grid-template-columns:1fr;gap:24px;}
  .flow{grid-template-columns:1fr;}
  .flow-step{padding-top:54px;}
  .field-row{grid-template-columns:1fr;}
  .cta-band{padding:28px 20px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section-head{margin-bottom:26px;}
}
@media (max-width:520px){
  .btn{padding:11px 18px;font-size:14.5px;}
  .metric .num{font-size:32px;}
  .card-body{padding:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}