/* roulang page: index */
:root{
  --bg-900:#071016;
  --bg-800:#0B1A22;
  --bg-700:#102732;
  --bg-600:#17333D;
  --brand-400:#3BE8BE;
  --brand-500:#16D5A6;
  --brand-600:#0FAE88;
  --accent-400:#FFA96B;
  --accent-500:#FF8A3D;
  --text-100:#EAF6F4;
  --text-300:#A9C2C0;
  --text-500:#6E8586;
  --line:rgba(22,213,166,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --success:#34D399;
  --warn:#FBBF24;
  --danger:#F87171;
  --r-card:16px;
  --r-glass:20px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--bg-900);
  color:var(--text-300);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-400);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text-100);font-weight:700;line-height:1.35;margin:0}
h1{font-size:clamp(30px,4.2vw,48px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;width:100%}

/* ---------- 顶部公告条 ---------- */
.notice-bar{
  background:linear-gradient(90deg,rgba(22,213,166,.14),rgba(255,138,61,.10));
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-300);
}
.notice-inner{display:flex;align-items:center;gap:12px;min-height:40px;padding:6px 0}
.notice-inner i{color:var(--brand-400)}
.notice-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.notice-close{
  background:transparent;border:1px solid var(--line-soft);color:var(--text-500);
  width:26px;height:26px;border-radius:8px;line-height:1;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--dur) var(--ease);
}
.notice-close:hover{color:var(--brand-400);border-color:var(--line)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,16,22,.86);
  backdrop-filter:blur(10px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:all var(--dur) var(--ease);
}
.site-header.scrolled{
  background:rgba(7,16,22,.92);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  gap:20px;height:var(--nav-h);
  transition:height var(--dur) var(--ease);
}
.site-header.scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:700;letter-spacing:.2px}
.brand:hover{color:var(--text-100)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;position:relative;flex:0 0 34px;
  background:radial-gradient(circle at 30% 25%,rgba(59,232,190,.35),rgba(22,213,166,.08) 60%,transparent 70%);
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark::before{
  content:"";position:absolute;width:22px;height:22px;border-radius:50%;
  border:1.5px solid var(--brand-500);border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-20deg);
}
.brand-mark::after{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-400);
  box-shadow:0 0 12px rgba(59,232,190,.85);
}
.brand-text{font-size:17px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;justify-self:start}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:10px;
  color:var(--text-300);font-size:15px;position:relative;
  transition:all var(--dur) var(--ease);
}
.main-nav a:hover{color:var(--text-100);background:var(--bg-600)}
.main-nav a.active{color:var(--brand-400);background:rgba(22,213,166,.10)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-400),rgba(22,213,166,0));
}
.header-actions{display:flex;align-items:center;gap:10px;justify-self:end}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-soft);
  background:var(--glass);color:var(--text-300);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--brand-400);border-color:var(--line)}
.hamburger{
  display:none;width:40px;height:38px;border-radius:10px;border:1px solid var(--line-soft);
  background:var(--glass);cursor:pointer;padding:9px 9px;
}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--text-100);margin:4px 0;transition:all var(--dur) var(--ease)}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 22px;border:1px solid transparent;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:all var(--dur) var(--ease);text-decoration:none;
}
.btn-primary{
  background:linear-gradient(180deg,var(--brand-400),var(--brand-500));
  color:#04140F;border-color:transparent;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(22,213,166,.42);color:#04140F;background:linear-gradient(180deg,#52f0c7,var(--brand-500))}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(22,213,166,.35)}
.btn-outline{
  background:transparent;color:var(--brand-400);border-color:rgba(22,213,166,.5);
}
.btn-outline:hover{background:rgba(22,213,166,.10);color:var(--brand-400);border-color:var(--brand-400);transform:translateY(-2px)}
.btn-ghost{
  background:var(--glass);color:var(--text-100);border-color:var(--line-soft);
  backdrop-filter:blur(14px) saturate(130%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.btn-ghost:hover{color:var(--text-100);border-color:var(--line);transform:translateY(-2px);background:rgba(255,255,255,.09)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;position:relative}
.section-alt{background:var(--bg-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{margin-top:14px}
.section-head p{margin-top:12px;max-width:660px;font-size:15px}
.head-link{font-size:14px;color:var(--brand-400);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.head-link:hover{gap:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--brand-400);
  text-transform:none;padding:5px 12px;border-radius:999px;
  background:rgba(22,213,166,.08);border:1px solid var(--line);
}
.eyebrow.accent{color:var(--accent-400);background:rgba(255,138,61,.08);border-color:rgba(255,138,61,.22)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 24px) 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 380px at 82% 12%,rgba(22,213,166,.13),transparent 70%),
    radial-gradient(520px 320px at 8% 82%,rgba(255,138,61,.07),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 1px,transparent 1px 14px);
  mask-image:linear-gradient(180deg,transparent,#000);
  opacity:.7;pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  min-height:calc(100vh - var(--nav-h) - 24px);max-height:880px;
}
.hero-copy{max-width:600px}
.hero h1{margin:22px 0 18px}
.hero-sub{font-size:17px;color:var(--text-300);max-width:540px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-list{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px}
.trust-list li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-300)}
.trust-list i{color:var(--brand-400);font-size:15px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-glass);border:1px solid var(--line-soft);
  box-shadow:var(--shadow-2);object-fit:cover;aspect-ratio:16/12;
}
.hero-visual::before{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  border-radius:50%;border:1px solid var(--line);pointer-events:none;
}
.hero-visual::after{
  content:"";position:absolute;left:-26px;bottom:-30px;width:120px;height:120px;
  border-radius:50%;border:1px dashed rgba(255,138,61,.28);pointer-events:none;
}
.glass-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(130%);
  border:1px solid var(--line-soft);border-radius:var(--r-glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-1);
}
.hero-card{
  position:absolute;left:-24px;bottom:-28px;width:min(320px,86%);
  padding:20px 22px;
}
.hero-card h4{font-size:15px;color:var(--brand-400);letter-spacing:.08em;margin-bottom:12px}
.hero-card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:8px 14px;font-size:14px}
.hero-card dt{color:var(--text-500)}
.hero-card dd{margin:0;color:var(--text-100);font-variant-numeric:tabular-nums}
.state-dot{display:inline-flex;align-items:center;gap:6px;color:var(--success)}
.state-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 8px rgba(52,211,153,.8)}

/* ---------- 痛点区 ---------- */
.pain-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:20px}
.pain-card{
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:26px 26px 24px;transition:all var(--dur) var(--ease);position:relative;overflow:hidden;
}
.pain-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.pain-card .icon{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.10);border:1px solid var(--line);color:var(--brand-400);font-size:17px;margin-bottom:16px;
}
.pain-card h3{font-size:18px;margin-bottom:10px}
.pain-card p{font-size:15px;margin:0}
.pain-card.feature{grid-row:span 2;display:flex;flex-direction:column;justify-content:center;
  background:linear-gradient(160deg,rgba(23,51,61,.9),var(--bg-700));padding:34px}
.pain-card.feature h3{font-size:22px}
.pain-card.feature .tag-line{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px}
.pain-stack{display:grid;gap:20px}

/* ---------- 方案区 ---------- */
.plan-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:22px;align-items:stretch}
.plan-main{
  background:linear-gradient(165deg,rgba(22,213,166,.10),rgba(16,39,50,.9) 46%);
  border:1px solid var(--line);border-radius:var(--r-card);padding:32px;
  display:flex;flex-direction:column;
}
.plan-main h3{font-size:24px;margin-bottom:12px}
.point-list{margin:20px 0 26px;display:grid;gap:12px}
.point-list li{display:flex;gap:10px;font-size:15px;color:var(--text-300)}
.point-list i{color:var(--brand-400);margin-top:6px;font-size:13px}
.card-cta{margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-400)}
.card-cta:hover{gap:12px}
.plan-side{display:grid;gap:22px}
.plan-card{
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:24px;transition:all var(--dur) var(--ease);
}
.plan-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.plan-card h3{font-size:18px;margin-bottom:8px}
.plan-card p{font-size:14.5px;margin-bottom:14px}

/* ---------- 数据条带 ---------- */
.stats-band{
  background:linear-gradient(90deg,rgba(11,26,34,.95),rgba(16,39,50,.95));
  border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:34px 30px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{border-left:1px solid var(--line-soft);padding-left:22px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-size:clamp(26px,3.2vw,38px);font-weight:700;color:var(--brand-400);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-item:nth-child(2n) .stat-num{color:var(--accent-400)}
.stat-label{font-size:14px;color:var(--text-300);margin-top:6px}
.stat-note{margin-top:22px;font-size:14px;color:var(--text-500);text-align:center}

/* ---------- 资讯 CMS 列表 ---------- */
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px}
.news-lead{
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;transition:all var(--dur) var(--ease);
}
.news-lead:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.news-media{position:relative;overflow:hidden}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 500ms var(--ease)}
.news-lead:hover .news-media img,.news-row:hover .news-thumb img{transform:scale(1.03)}
.badge-cat{
  position:absolute;left:14px;bottom:14px;
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  background:rgba(11,26,34,.82);border:1px solid var(--line);color:var(--brand-400);
  backdrop-filter:blur(8px);
}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:20px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-500);margin-top:16px}
.news-meta .time{color:var(--accent-400);font-variant-numeric:tabular-nums}
.news-list{display:grid;gap:14px;align-content:start}
.news-row{
  display:grid;grid-template-columns:132px 1fr;gap:16px;
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:14px;transition:all var(--dur) var(--ease);
}
.news-row:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.news-thumb{border-radius:12px;overflow:hidden}
.news-thumb img{width:100%;height:100%;min-height:88px;object-fit:cover;transition:transform 500ms var(--ease)}
.news-row h3{font-size:16px;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row p{font-size:13.5px;margin-bottom:8px;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row .news-meta{margin-top:0}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--bg-700);border:1px dashed var(--line-soft);border-radius:var(--r-card);
}
.empty-state i{font-size:28px;color:var(--brand-400);margin-bottom:14px;display:block}
.empty-state p{margin-bottom:18px}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  position:relative;display:block;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-soft);background:var(--bg-700);
  transition:all var(--dur) var(--ease);
}
.cat-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.cat-card img{width:100%;aspect-ratio:4/3;object-fit:cover;opacity:.72;transition:opacity var(--dur) var(--ease)}
.cat-card:hover img{opacity:.9}
.cat-cover-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,16,22,.15),rgba(7,16,22,.92))}
.cat-content{position:absolute;left:0;right:0;bottom:0;padding:20px}
.cat-content h3{font-size:18px;color:#fff;margin-bottom:6px}
.cat-content p{font-size:13.5px;color:var(--text-300);margin:0}
.cat-content .cat-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-400);margin-top:10px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq-aside p{font-size:15px}
.faq-aside .aside-note{
  margin-top:22px;padding:20px;border-radius:var(--r-card);
  background:var(--bg-700);border:1px solid var(--line-soft);font-size:14px;
}
.faq-list{border-top:1px solid var(--line-soft)}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;color:var(--text-100);font-size:17px;font-weight:600;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--brand-400)}
.faq-q i{color:var(--brand-400);font-size:14px;transition:transform var(--dur) var(--ease);flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--text-300);margin:0}

/* ---------- 表单 ---------- */
.form-shell{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start;
  background:linear-gradient(150deg,rgba(16,39,50,.92),rgba(11,26,34,.92));
  border:1px solid var(--line-soft);border-radius:var(--r-glass);padding:44px;
}
.form-aside h2{margin:14px 0 16px}
.form-aside ul{display:grid;gap:12px;margin-top:22px}
.form-aside li{display:flex;gap:10px;font-size:14.5px}
.form-aside i{color:var(--brand-400);margin-top:6px;font-size:13px}
.form-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;color:var(--text-300)}
.field .req{color:var(--accent-400);margin-left:2px}
.form-control,.form-select{
  background:var(--bg-700);border:1px solid var(--line-soft);color:var(--text-100);
  border-radius:var(--r-input);padding:12px 14px;font-size:15px;line-height:1.5;
  transition:all var(--dur) var(--ease);width:100%;
}
.form-control::placeholder{color:var(--text-500)}
.form-control:focus,.form-select:focus{
  background:var(--bg-700);border-color:var(--brand-500);color:var(--text-100);
  box-shadow:0 0 0 3px rgba(22,213,166,.16);outline:none;
}
.form-select option{background:var(--bg-700);color:var(--text-100)}
.field.error .form-control,.field.error .form-select{border-color:var(--danger)}
.field .err-text{display:none;font-size:13px;color:var(--danger)}
.field.error .err-text{display:block}
.privacy-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-500);grid-column:1/-1}
.privacy-row input{width:16px;height:16px;margin-top:5px;accent-color:var(--brand-500);flex:0 0 16px}
.form-tip{grid-column:1/-1;font-size:13px;color:var(--text-500)}
.form-success{
  display:none;grid-column:1/-1;padding:12px 16px;border-radius:var(--r-input);
  background:rgba(52,211,153,.10);border:1px solid rgba(52,211,153,.3);color:var(--success);font-size:14px;
}
.form-success.show{display:block}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:34px 38px;border-radius:var(--r-glass);
  background:linear-gradient(100deg,rgba(22,213,166,.14),rgba(255,138,61,.10));
  border:1px solid var(--line);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px)}
.cta-band p{font-size:15px;margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{font-size:14px;color:var(--text-500);margin-top:16px;max-width:280px}
.footer-col h4{font-size:15px;color:var(--text-100);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-300)}
.footer-col a:hover{color:var(--brand-400)}
.footer-contact li{font-size:14px;color:var(--text-300);display:flex;gap:10px;margin-bottom:12px}
.footer-contact i{color:var(--brand-400);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:52px;padding:20px 0;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-500);
}
.footer-bottom a{color:var(--text-500)}
.footer-bottom a:hover{color:var(--brand-400)}
.footer-toggle{display:none}

/* ---------- 弹层表单 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:1080;display:none;
  background:rgba(3,8,11,.72);backdrop-filter:blur(6px);
  padding:24px;overflow-y:auto;
}
.modal-mask.show{display:flex;align-items:flex-start;justify-content:center}
.modal-panel{
  width:min(560px,100%);margin:auto;position:relative;
  background:linear-gradient(160deg,rgba(16,39,50,.98),rgba(11,26,34,.98));
  border:1px solid var(--line);border-radius:var(--r-glass);
  box-shadow:var(--shadow-2);padding:32px;
}
.modal-panel h3{font-size:22px;margin-bottom:8px}
.modal-panel .modal-sub{font-size:14.5px;margin-bottom:22px}
.modal-close{
  position:absolute;right:16px;top:16px;width:34px;height:34px;border-radius:10px;
  background:var(--glass);border:1px solid var(--line-soft);color:var(--text-300);
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--dur) var(--ease);
}
.modal-close:hover{color:var(--brand-400);border-color:var(--line)}
.modal-form-grid{display:grid;gap:16px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .hero{padding:calc(var(--nav-h) + 24px) 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px;min-height:0;max-height:none}
  .hero-visual{order:2}
  .hero-card{position:static;width:100%;margin-top:18px}
  .hero-visual::before,.hero-visual::after{display:none}
  .pain-grid{grid-template-columns:1fr}
  .pain-card.feature{grid-row:auto}
  .plan-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:26px 20px}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .form-shell{grid-template-columns:1fr;padding:30px;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .main-nav{
    display:none;position:fixed;left:0;right:0;top:var(--nav-h);
    background:rgba(7,16,22,.97);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);padding:18px 20px 26px;
    flex-direction:column;align-items:stretch;gap:6px;z-index:1029;
  }
  .main-nav.show{display:flex}
  .main-nav a{height:46px;padding:0 16px;font-size:16px}
  .main-nav a.active::after{display:none}
  .hamburger{display:inline-block}
  .header-inner{grid-template-columns:1fr auto}
  .icon-btn{display:none}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .news-row{grid-template-columns:104px 1fr}
  .cta-band{padding:26px 24px}
  .form-card-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
}
@media (max-width:575px){
  .section{padding:48px 0}
  .stats-band{grid-template-columns:1fr;padding:26px 22px}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid var(--line-soft);padding-top:18px}
  .stat-item:first-child{border-top:0;padding-top:0}
  .hero-cta .btn{width:100%}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col h4{margin:0;padding:16px 0;display:flex;justify-content:space-between;align-items:center;cursor:pointer;border-bottom:1px solid var(--line-soft)}
  .footer-col h4::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--text-500);transition:transform var(--dur) var(--ease)}
  .footer-col.open h4::after{transform:rotate(180deg)}
  .footer-col ul,.footer-contact{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);padding-top:0}
  .footer-col.open ul,.footer-col.open .footer-contact{max-height:420px;padding-top:14px}
  .footer-brand p{max-width:none}
  .form-shell{padding:24px 20px}
  .modal-panel{padding:24px 20px}
  .news-row{grid-template-columns:1fr}
  .news-thumb img{min-height:150px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-900:#071016;--bg-800:#0B1A22;--bg-700:#102732;--bg-600:#17333D;
  --brand-400:#3BE8BE;--brand-500:#16D5A6;--brand-600:#0FAE88;
  --accent-400:#FFA96B;--accent-500:#FF8A3D;
  --text-100:#EAF6F4;--text-300:#A9C2C0;--text-500:#6E8586;
  --line:rgba(22,213,166,.16);--line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --r-card:16px;--r-float:20px;--r-btn:12px;--r-input:12px;--r-pill:999px;--r-img:14px;
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px;}
body{
  margin:0;padding:0;background:var(--bg-900);color:var(--text-300);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--brand-400);text-decoration:none;transition:color 180ms var(--ease),opacity 180ms var(--ease);}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{color:var(--text-100);margin:0 0 16px;font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(22,213,166,.28);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1200px;}}

/* ---------- 公告条 ---------- */
.announce{background:linear-gradient(90deg,rgba(22,213,166,.14),rgba(255,138,61,.10));border-bottom:1px solid var(--line);position:relative;z-index:1040;}
.announce-inner{display:flex;align-items:center;gap:12px;min-height:42px;padding-top:8px;padding-bottom:8px;position:relative;}
.announce-tag{flex:0 0 auto;font-size:12px;color:#04140f;background:var(--brand-500);padding:2px 10px;border-radius:var(--r-pill);font-weight:700;letter-spacing:.5px;}
.announce p{margin:0;font-size:14px;color:var(--text-300);line-height:1.6;padding-right:36px;}
.announce-close{position:absolute;right:20px;top:50%;transform:translateY(-50%);border:0;background:transparent;color:var(--text-500);font-size:16px;cursor:pointer;padding:6px;border-radius:8px;transition:color 180ms var(--ease),background 180ms var(--ease);}
.announce-close:hover{color:var(--text-100);background:var(--glass);}
.announce.hidden{display:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(7,16,22,.74);backdrop-filter:blur(10px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.site-header.scrolled{background:rgba(7,16,22,.94);border-bottom-color:var(--line-soft);box-shadow:0 10px 30px rgba(2,8,12,.5);}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h);transition:height 180ms var(--ease);}
.site-header.scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-100);font-size:18px;font-weight:700;letter-spacing:.4px;}
.brand:hover{color:var(--text-100);}
.brand-mark{position:relative;width:26px;height:26px;border-radius:50%;border:2px solid var(--brand-500);border-right-color:transparent;box-shadow:0 0 14px rgba(22,213,166,.35);flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;right:-1px;top:-2px;width:7px;height:7px;border-radius:50%;background:var(--accent-400);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{position:relative;padding:8px 14px;border-radius:var(--r-pill);font-size:15px;color:var(--text-300);white-space:nowrap;}
.main-nav a:hover{color:var(--text-100);background:var(--glass);}
.main-nav a.active{color:var(--brand-400);background:rgba(22,213,166,.10);}
.main-nav a.active::after{content:"";position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--brand-500);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-soft);background:var(--glass);color:var(--text-300);cursor:pointer;transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);}
.icon-btn:hover{color:var(--brand-400);border-color:var(--line);transform:translateY(-2px);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-soft);background:var(--glass);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-100);transition:transform 180ms var(--ease),opacity 180ms var(--ease);}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:var(--header-h);z-index:1025;
  background:rgba(7,16,22,.97);backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--line-soft);
  padding:18px 20px 26px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity 180ms var(--ease),transform 180ms var(--ease);
}
.mobile-drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a{display:block;padding:13px 14px;border-radius:12px;color:var(--text-300);font-size:16px;}
.mobile-drawer a:hover,.mobile-drawer a.active{color:var(--brand-400);background:rgba(22,213,166,.10);}
.mobile-drawer .drawer-cta{margin-top:14px;}

/* ---------- 按钮 ---------- */
.btn{font-family:inherit;font-size:15px;font-weight:600;border-radius:var(--r-btn);padding:11px 22px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);line-height:1.4;}
.btn-brand{background:var(--brand-500);color:#04160f;box-shadow:var(--glow);}
.btn-brand:hover{background:var(--brand-400);color:#04160f;transform:translateY(-2px);box-shadow:0 12px 32px rgba(22,213,166,.42);}
.btn-brand:active{background:var(--brand-600);transform:translateY(0);}
.btn-outline-brand{background:transparent;border-color:var(--brand-500);color:var(--brand-400);}
.btn-outline-brand:hover{background:rgba(22,213,166,.12);color:var(--brand-400);transform:translateY(-2px);}
.btn-outline-brand:active{background:rgba(22,213,166,.2);transform:translateY(0);}
.btn-ghost{background:var(--glass);border-color:var(--line-soft);color:var(--text-100);backdrop-filter:blur(14px) saturate(130%);}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:var(--text-100);transform:translateY(-2px);}
.btn:disabled,.btn.disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:13px;line-height:1.6;}
.tag-brand{background:rgba(22,213,166,.14);color:var(--brand-400);border:1px solid var(--line);}
.tag-accent{background:rgba(255,138,61,.14);color:var(--accent-400);border:1px solid rgba(255,138,61,.24);}
.tag-ghost{background:var(--glass);color:var(--text-300);border:1px solid var(--line-soft);}

/* ---------- 文章头部 ---------- */
.page-main{padding-top:var(--header-h);}
.article-hero{position:relative;padding:44px 0 36px;background-image:linear-gradient(180deg,rgba(7,16,22,.86),rgba(7,16,22,.96)),url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;border-bottom:1px solid var(--line-soft);}
.breadcrumb-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--text-500);margin-bottom:20px;}
.breadcrumb-bar a{color:var(--text-500);}
.breadcrumb-bar a:hover{color:var(--brand-400);}
.breadcrumb-bar .sep{color:rgba(255,255,255,.18);}
.breadcrumb-bar .current{color:var(--text-300);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{font-size:clamp(26px,4vw,42px);line-height:1.3;max-width:22ch;margin-bottom:20px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;font-size:13.5px;color:var(--text-500);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand-500);}
.rule-line{height:1px;background:linear-gradient(90deg,var(--line),rgba(255,255,255,.03));margin-top:26px;}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px;}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;}
.article-body{max-width:780px;font-size:16px;line-height:1.9;}
.article-body h2{font-size:clamp(22px,2.6vw,30px);margin:56px 0 18px;padding-left:16px;position:relative;}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--brand-500),rgba(22,213,166,.15));}
.article-body h3{font-size:19px;margin:36px 0 12px;color:var(--text-100);}
.article-body h4{font-size:17px;margin:26px 0 10px;}
.article-body p{color:var(--text-300);margin-bottom:1.2em;}
.article-body strong{color:var(--text-100);font-weight:600;}
.article-body ul,.article-body ol{margin:18px 0 24px;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;color:var(--text-300);}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-500);box-shadow:0 0 10px rgba(22,213,166,.5);}
.article-body ol{counter-reset:art;}
.article-body ol li{counter-increment:art;padding-left:30px;}
.article-body ol li::before{content:counter(art);position:absolute;left:0;top:.15em;width:20px;height:20px;border-radius:6px;background:rgba(22,213,166,.14);color:var(--brand-400);font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700;}
.article-body blockquote{margin:28px 0;padding:18px 22px;background:rgba(22,213,166,.06);border-left:3px solid var(--brand-500);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--text-100);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:28px auto;border-radius:var(--r-img);box-shadow:var(--shadow-1);}
.article-body figure{margin:28px 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13.5px;color:var(--text-500);}
.article-body .table-wrap{overflow-x:auto;margin:26px 0;border:1px solid var(--line-soft);border-radius:var(--r-card);}
.article-body table{width:100%;border-collapse:collapse;min-width:520px;font-size:15px;}
.article-body th{background:var(--bg-700);color:var(--text-100);text-align:left;padding:12px 16px;border-bottom:1px solid var(--line-soft);font-weight:600;}
.article-body td{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.05);color:var(--text-300);}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.article-body a{border-bottom:1px solid rgba(22,213,166,.35);}

/* 空态 */
.empty-state{max-width:780px;text-align:center;padding:56px 28px;background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-float);}
.empty-state i{font-size:34px;color:var(--brand-500);margin-bottom:16px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-1);}
.side-card h4{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-card h4 i{color:var(--brand-500);font-size:14px;}
.side-links li{margin-bottom:4px;}
.side-links a{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--text-300);}
.side-links a:hover{background:var(--bg-700);color:var(--brand-400);}
.side-links a i{font-size:12px;color:var(--text-500);}
.side-note{font-size:13.5px;color:var(--text-500);line-height:1.75;margin:14px 0 0;}

/* ---------- 尾部 CTA 卡 ---------- */
.inline-cta{margin-top:52px;padding:28px;border-radius:var(--r-float);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(130%);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-1);}
.inline-cta h3{font-size:20px;margin-bottom:10px;}
.inline-cta p{margin-bottom:20px;font-size:15px;}
.inline-cta .cta-row{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 上/下篇导航 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.post-nav a{display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-card);transition:border-color 180ms var(--ease),transform 180ms var(--ease);}
.post-nav a:hover{border-color:var(--line);transform:translateY(-3px);}
.post-nav span{font-size:13px;color:var(--text-500);}
.post-nav strong{font-size:15.5px;color:var(--text-100);font-weight:600;}

/* ---------- 相关推荐 ---------- */
.section{padding:0;margin-top:72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin:0;}
.section-head p{margin:6px 0 0;font-size:14.5px;color:var(--text-500);}
.section-head .more-link{font-size:14.5px;color:var(--brand-400);display:inline-flex;align-items:center;gap:6px;}
.rec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;}
.rec-card{background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-card);overflow:hidden;transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);display:flex;flex-direction:column;}
.rec-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1);}
.rec-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:0;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 400ms var(--ease);}
.rec-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-thumb .tag{position:absolute;left:14px;bottom:14px;background:rgba(7,16,22,.78);border:1px solid var(--line);color:var(--brand-400);backdrop-filter:blur(6px);}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;margin:0;line-height:1.5;}
.rec-body p{margin:0;font-size:14.5px;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-500);}
.rec-foot i{color:var(--brand-500);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line-soft);}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 4px;font-size:17px;font-weight:600;color:var(--text-100);transition:color 180ms var(--ease);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-400);}
.faq-item summary .faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);color:var(--brand-400);display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:transform 180ms var(--ease);}
.faq-item[open] summary .faq-icon{transform:rotate(180deg);}
.faq-item .faq-answer{padding:0 4px 22px;font-size:15px;color:var(--text-300);max-width:820px;}

/* ---------- 表单 ---------- */
.cta-panel{margin-top:76px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px;padding:38px;border-radius:var(--r-float);background:linear-gradient(135deg,rgba(22,213,166,.09),rgba(255,138,61,.05)),var(--bg-800);border:1px solid var(--line);box-shadow:var(--shadow-2);}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:1px;color:var(--accent-400);margin-bottom:12px;}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-panel-text p{font-size:15px;margin-bottom:18px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-300);margin-bottom:10px;}
.cta-points i{color:var(--brand-500);margin-top:5px;font-size:13px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--text-300);margin-bottom:8px;}
.field .req{color:var(--accent-400);margin-left:4px;}
.form-control{width:100%;background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-input);color:var(--text-100);font-family:inherit;font-size:15px;padding:12px 14px;line-height:1.5;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);appearance:none;}
.form-control::placeholder{color:var(--text-500);}
.form-control:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(22,213,166,.16);background:var(--bg-700);color:var(--text-100);}
select.form-control{background-image:linear-gradient(45deg,transparent 50%,var(--text-300) 50%),linear-gradient(135deg,var(--text-300) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:40px;}
textarea.form-control{min-height:110px;resize:vertical;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-500);margin:6px 0 18px;line-height:1.7;}
.check-row input{margin-top:5px;accent-color:var(--brand-500);width:15px;height:15px;flex:0 0 auto;}
.form-tip{font-size:13.5px;margin-top:12px;min-height:20px;color:var(--text-500);}
.form-tip.ok{color:#34D399;}
.form-tip.err{color:#F87171;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:var(--bg-800);border-top:1px solid var(--line-soft);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;font-size:17px;}
.footer-brand p{margin:0;font-size:14px;color:var(--text-500);line-height:1.85;max-width:34ch;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-100);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-500);}
.footer-col ul a:hover{color:var(--brand-400);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-500);margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:var(--brand-500);margin-top:5px;font-size:13px;}
.footer-bottom{border-top:1px solid var(--line-soft);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--text-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-side{order:2;}
  .layout-grid{gap:36px;}
}
@media (min-width:1200px){
  .layout-grid{grid-template-columns:minmax(0,1fr) 312px;align-items:start;}
  .article-side{position:sticky;top:108px;}
}
@media (max-width:1199.98px){
  .article-side{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{gap:16px;}
  .mobile-drawer{top:60px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-panel{grid-template-columns:minmax(0,1fr);padding:30px;}
}
@media (max-width:767.98px){
  .article-hero{padding:34px 0 28px;}
  .article-main{padding:40px 0 52px;}
  .article-hero h1{max-width:none;}
  .article-body h2{margin-top:44px;}
  .post-nav{grid-template-columns:1fr;}
  .section{margin-top:56px;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:16px;}
  .announce p{font-size:13px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .inline-cta .cta-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-panel{padding:24px 18px;}
  .rec-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .article-meta{gap:10px;font-size:13px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg-900:#071016;
  --bg-800:#0B1A22;
  --bg-700:#102732;
  --bg-600:#17333D;
  --brand-400:#3BE8BE;
  --brand-500:#16D5A6;
  --brand-600:#0FAE88;
  --accent-400:#FFA96B;
  --accent-500:#FF8A3D;
  --text-100:#EAF6F4;
  --text-300:#A9C2C0;
  --text-500:#6E8586;
  --line:rgba(22,213,166,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --radius-card:16px;
  --radius-glass:20px;
  --radius-btn:12px;
  --radius-img:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --success:#34D399;
  --warn:#FBBF24;
  --danger:#F87171;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-300);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-400);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{margin:0;color:var(--text-100);font-weight:700;line-height:1.35;}
h1{font-size:clamp(30px,4.2vw,48px);}
h2{font-size:clamp(24px,3vw,34px);}
h3{font-size:20px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}
::selection{background:rgba(22,213,166,.3);color:#fff;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:var(--brand-400);margin-bottom:14px;}
.section-head .eyebrow::before{content:"";width:26px;height:2px;background:var(--brand-500);border-radius:2px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text-300);max-width:680px;}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand-500);color:#04211A;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--brand-400);color:#04211A;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);background:var(--brand-600);color:#032018;}
.btn-outline{background:transparent;border-color:var(--brand-500);color:var(--brand-400);}
.btn-outline:hover{background:rgba(22,213,166,.10);color:var(--brand-400);transform:translateY(-2px);}
.btn-ghost{background:var(--glass);border-color:var(--line-soft);color:var(--text-100);backdrop-filter:blur(14px) saturate(130%);}
.btn-ghost:hover{background:var(--bg-600);color:var(--text-100);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;line-height:1.5;
  background:rgba(22,213,166,.12);color:var(--brand-400);border:1px solid var(--line);
}
.tag-accent{background:rgba(255,138,61,.14);color:var(--accent-400);border-color:rgba(255,138,61,.28);}
.tag-muted{background:rgba(255,255,255,.05);color:var(--text-300);border-color:var(--line-soft);}
.badge{background:rgba(22,213,166,.14);color:var(--brand-400);border-radius:999px;font-weight:500;padding:5px 12px;font-size:13px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,16,22,.70);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--line-soft);
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.site-header.is-scrolled{background:rgba(7,16,22,.94);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height 180ms var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-size:18px;font-weight:700;letter-spacing:.01em;flex-shrink:0;}
.brand:hover{color:var(--text-100);}
.brand-mark{
  position:relative;width:24px;height:24px;border-radius:50%;
  border:2px solid var(--brand-500);flex-shrink:0;
}
.brand-mark::before{
  content:"";position:absolute;inset:4px;border-radius:50%;
  border:2px solid transparent;border-top-color:var(--accent-400);
  transform:rotate(-30deg);
}
.brand-mark::after{
  content:"";position:absolute;right:-2px;bottom:2px;width:7px;height:7px;border-radius:50%;
  background:var(--brand-400);box-shadow:0 0 10px rgba(59,232,190,.7);
}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-300);transition:background 180ms var(--ease),color 180ms var(--ease);
}
.main-nav a:hover{background:var(--bg-700);color:var(--text-100);}
.main-nav a.active{background:rgba(22,213,166,.10);color:var(--brand-400);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line-soft);background:transparent;color:var(--text-300);
  cursor:pointer;transition:all 180ms var(--ease);
}
.icon-btn:hover{color:var(--brand-400);border-color:var(--line);background:var(--bg-700);}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line-soft);background:transparent;color:var(--text-100);cursor:pointer;}
.search-pop{
  position:absolute;top:calc(100% + 10px);right:24px;width:300px;padding:14px;
  border-radius:var(--radius-glass);background:rgba(11,26,34,.96);
  border:1px solid var(--line);box-shadow:var(--shadow-2);display:none;
}
.search-pop.open{display:block;}
.search-pop .form-control{width:100%;height:44px;}

/* 表单控件统一外观 */
.form-control,.form-select{
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--radius-btn);
  color:var(--text-100);font-size:15px;padding:0 14px;height:46px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.form-control::placeholder{color:var(--text-500);}
.form-control:focus,.form-select:focus{
  background:var(--bg-700);border-color:var(--brand-500);color:var(--text-100);
  box-shadow:0 0 0 3px rgba(22,213,166,.16);outline:none;
}

/* 面包屑与页头 */
.breadcrumb-nav{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-500);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb-nav a{color:var(--text-300);}
.breadcrumb-nav a:hover{color:var(--brand-400);}
.breadcrumb-nav .sep{color:var(--text-500);}
.breadcrumb-nav .current{color:var(--brand-400);}
.page-hero{
  position:relative;overflow:hidden;
  min-height:clamp(250px,30vw,320px);
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,22,.72) 0%,rgba(7,16,22,.86) 55%,rgba(7,16,22,.97) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:80px;padding-bottom:44px;}
.page-hero h1{max-width:820px;margin-bottom:18px;}
.page-hero .lead{max-width:680px;font-size:17px;color:var(--text-300);margin-bottom:22px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}

/* 通用卡片 */
.card-panel{
  background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--radius-card);
  padding:26px;height:100%;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card-panel:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1);}
.glass-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(130%);
  border:1px solid rgba(255,255,255,.10);border-radius:var(--radius-glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-1);
  padding:26px;
}
.card-title{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.card-title i{color:var(--brand-400);font-size:17px;}
.card-text{font-size:15px;color:var(--text-300);}
.card-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-400);margin-top:18px;}
.card-link i{transition:transform 180ms var(--ease);}
.card-link:hover i{transform:translateX(4px);}
.img-round{border-radius:var(--radius-img);overflow:hidden;}
.img-round img{width:100%;transition:transform 400ms var(--ease);}
.img-round:hover img{transform:scale(1.03);}

/* 分栏：左文右图 */
.split-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:start;}
.split-text p{font-size:16px;}
.check-list{margin-top:26px;}
.check-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line-soft);
  font-size:15px;color:var(--text-300);
}
.check-list li:last-child{border-bottom:none;}
.check-list i{color:var(--brand-400);font-size:15px;margin-top:5px;flex-shrink:0;}
.split-side{display:flex;flex-direction:column;gap:20px;}
.info-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line-soft);font-size:14px;}
.info-list li:last-child{border-bottom:none;}
.info-list .k{color:var(--text-500);}
.info-list .v{color:var(--text-100);font-weight:600;}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--radius-card);
  background:var(--bg-800);border:1px solid var(--line-soft);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step::before{
  content:"";position:absolute;left:22px;top:0;width:44px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),rgba(22,213,166,0));
}
.step:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1);}
.step-num{font-size:13px;font-weight:700;color:var(--accent-400);letter-spacing:.08em;}
.step h3{font-size:17px;margin:10px 0 10px;}
.step p{font-size:14px;line-height:1.75;color:var(--text-300);margin:0;}

/* 非对称卡片区 */
.asym-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:22px;}
.asym-right{display:grid;gap:22px;align-content:start;}
.feature-card{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  border:1px solid var(--line-soft);background:var(--bg-700);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.feature-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1);}
.feature-card .fc-img{height:190px;overflow:hidden;}
.feature-card .fc-img img{width:100%;height:100%;object-fit:cover;}
.feature-card .fc-body{padding:26px;}
.feature-card h3{margin-bottom:12px;}
.feature-card p{font-size:15px;margin:0;}
.mini-card{padding:24px;border-radius:var(--radius-card);background:var(--bg-800);border:1px solid var(--line-soft);transition:transform 180ms var(--ease),border-color 180ms var(--ease);}
.mini-card:hover{transform:translateY(-3px);border-color:var(--line);}
.mini-card h3{font-size:18px;margin-bottom:10px;}
.mini-card p{font-size:14px;margin:0;}

/* 数据条带 */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-soft);background:var(--bg-800);
}
.stat{padding:30px 26px;border-right:1px solid var(--line-soft);}
.stat:last-child{border-right:none;}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--text-100);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-num em{font-style:normal;font-size:16px;font-weight:600;color:var(--text-300);margin-left:6px;}
.stat-num.accent{color:var(--accent-400);}
.stat-num.brand{color:var(--brand-400);}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-300);}
.strip-note{margin-top:18px;font-size:14px;color:var(--text-500);}

/* FAQ */
.faq-accordion{border-top:1px solid var(--line-soft);}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-soft);}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  position:relative;width:100%;background:transparent;border:0;box-shadow:none;
  color:var(--text-100);font-size:17px;font-weight:600;line-height:1.6;
  padding:24px 48px 24px 0;text-align:left;
  transition:color 180ms var(--ease);
}
.faq-accordion .accordion-button:hover{color:var(--brand-400);}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-400);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-400);outline-offset:-2px;}
.faq-accordion .accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;width:10px;height:10px;margin:-8px 0 0;
  border-right:2px solid var(--brand-400);border-bottom:2px solid var(--brand-400);
  transform:rotate(45deg);background-image:none;transition:transform 180ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:-2px;}
.faq-accordion .accordion-body{padding:0 48px 26px 0;font-size:15px;color:var(--text-300);}

/* 相关栏目 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.related-card{
  display:flex;gap:16px;align-items:flex-start;padding:22px;border-radius:var(--radius-card);
  background:var(--bg-800);border:1px solid var(--line-soft);color:var(--text-300);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.related-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1);color:var(--text-300);}
.related-card .rc-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.12);color:var(--brand-400);font-size:17px;
}
.related-card h3{font-size:17px;margin-bottom:6px;}
.related-card p{font-size:14px;margin:0;}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-glass);
  border:1px solid var(--line);background:linear-gradient(120deg,rgba(16,39,50,.96),rgba(11,26,34,.98));
  padding:44px;display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(22,213,166,.18);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-band p{font-size:15px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:2;}

/* 页脚 */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line-soft);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-500);max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-100);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-300);}
.footer-col ul a:hover{color:var(--brand-400);}
.footer-contact li{font-size:14px;color:var(--text-300);display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--brand-400);margin-top:6px;font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-500);
}

/* 响应式 */
@media (max-width:1199px){
  .split-grid{gap:32px;}
}
@media (max-width:991px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section-sm{padding:52px 0;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 20px 22px;
    background:rgba(7,16,22,.97);
    backdrop-filter:blur(18px) saturate(130%);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    display:none;
    max-height:calc(100vh - 60px);overflow-y:auto;
  }
  .main-nav.open{display:flex;}
  .main-nav a{height:48px;padding:0 14px;font-size:16px;border-radius:12px;}
  .header-actions .btn{display:none;}
  .header-actions .btn.keep{display:inline-flex;}
  .split-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .asym-grid{grid-template-columns:1fr;}
  .stats-strip{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line-soft);}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .search-pop{right:20px;width:260px;}
}
@media (max-width:575px){
  .section{padding:48px 0;}
  .page-hero .container{padding-top:64px;padding-bottom:32px;}
  .page-hero .lead{font-size:16px;}
  .steps{grid-template-columns:1fr;}
  .stats-strip{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--line-soft);}
  .stat:last-child{border-bottom:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-band{padding:26px 22px;}
  .cta-actions .btn{width:100%;}
  .search-pop{left:20px;right:20px;width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-900:#071016;--bg-800:#0B1A22;--bg-700:#102732;--bg-600:#17333D;
  --brand-400:#3BE8BE;--brand-500:#16D5A6;--brand-600:#0FAE88;
  --accent-400:#FFA96B;--accent-500:#FF8A3D;
  --text-100:#EAF6F4;--text-300:#A9C2C0;--text-500:#6E8586;
  --line:rgba(22,213,166,.16);--line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --success:#34D399;--warn:#FBBF24;--danger:#F87171;
  --radius-card:16px;--radius-panel:20px;--radius-btn:12px;--radius-input:12px;--radius-pill:999px;--radius-img:14px;
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --ease:cubic-bezier(.2,.7,.3,1);--t:180ms var(--ease);
  --section:88px;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-900);color:var(--text-300);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-400);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{color:var(--text-100);font-weight:700;line-height:1.4;margin:0}
h1{font-size:clamp(30px,4.2vw,46px);letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px}
::selection{background:rgba(22,213,166,.3);color:var(--text-100)}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:var(--section) 0;position:relative}
.section-head{max-width:760px;margin-bottom:44px}
.section-head p{margin:14px 0 0;font-size:16px;color:var(--text-300)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1px;color:var(--brand-400);text-transform:uppercase;font-weight:600;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-500);display:block}
.glass{background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--radius-panel);backdrop-filter:blur(14px) saturate(130%);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-1)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--radius-pill);font-size:13px;line-height:1.6;background:rgba(22,213,166,.12);color:var(--brand-400);border:1px solid var(--line)}
.tag-warm{background:rgba(255,138,61,.12);color:var(--accent-400);border-color:rgba(255,138,61,.22)}
.num{font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  border-radius:var(--radius-btn)!important;font-weight:600;font-size:15px;
  padding:12px 22px;border:1px solid transparent;line-height:1.4;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  box-shadow:none!important;
}
.btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px}
.btn-brand{background:var(--brand-500);color:#04140f}
.btn-brand:hover{background:var(--brand-400);color:#04140f;transform:translateY(-2px);box-shadow:var(--glow)!important}
.btn-brand:active{background:var(--brand-600);color:#04140f;transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line-soft);color:var(--text-100)}
.btn-ghost:hover{background:rgba(255,255,255,.11);border-color:var(--line);color:var(--brand-400);transform:translateY(-2px)}
.btn-line{background:transparent;border-color:var(--brand-500);color:var(--brand-400)}
.btn-line:hover{background:rgba(22,213,166,.1);color:var(--brand-400);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:72px;
  background:rgba(7,16,22,.7);backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:height var(--t),background var(--t),border-color var(--t);
}
.site-header.scrolled{height:60px;background:rgba(7,16,22,.94);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;height:100%;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text-100);white-space:nowrap}
.brand:hover{color:var(--brand-400)}
.brand-mark{width:26px;height:26px;border-radius:50%;border:2px solid var(--brand-500);position:relative;flex:0 0 auto;box-shadow:inset 0 0 0 4px rgba(22,213,166,.14)}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--brand-400)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:14px}
.main-nav a{color:var(--text-300);font-size:15px;padding:8px 13px;border-radius:10px;transition:color var(--t),background var(--t)}
.main-nav a:hover{color:var(--text-100);background:var(--glass)}
.main-nav a.active{color:var(--brand-400);background:rgba(22,213,166,.1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-btn);display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-300);cursor:pointer;
  transition:color var(--t),background var(--t),border-color var(--t);
}
.icon-btn:hover{color:var(--brand-400);border-color:var(--line);background:rgba(255,255,255,.1)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--radius-btn);background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-100);cursor:pointer}
.mobile-nav{
  display:none;position:fixed;top:60px;left:0;right:0;bottom:0;z-index:999;
  background:rgba(7,16,22,.97);backdrop-filter:blur(16px);padding:20px;overflow-y:auto;
}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:15px 4px;border-bottom:1px solid var(--line-soft);color:var(--text-300);font-size:16px}
.mobile-nav a.active{color:var(--brand-400)}
.mobile-nav .btn{width:100%;margin-top:22px}

/* ============ Hero ============ */
.page-hero{
  padding-top:calc(72px + 44px);padding-bottom:70px;position:relative;overflow:hidden;
  background:
    radial-gradient(760px 380px at 84% 6%,rgba(22,213,166,.14),transparent 68%),
    radial-gradient(600px 320px at 6% 96%,rgba(255,138,61,.08),transparent 70%),
    var(--bg-900);
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:120px;width:300px;height:300px;border-radius:50%;
  border:1px solid var(--line);opacity:.7;pointer-events:none;
}
.breadcrumb-row{margin-bottom:26px;font-size:13px;color:var(--text-500)}
.breadcrumb-row ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-row li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-row li+li::before{content:"/";color:var(--text-500)}
.breadcrumb-row a{color:var(--text-300)}
.breadcrumb-row a:hover{color:var(--brand-400)}
.breadcrumb-row .current{color:var(--text-500)}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;position:relative;z-index:2}
.hero-copy h1{margin:16px 0 18px}
.hero-copy .lede{font-size:17px;color:var(--text-300);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-list{display:flex;flex-wrap:wrap;gap:12px 26px}
.trust-list li{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--text-300)}
.trust-list i{color:var(--brand-400)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;height:320px;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line-soft);box-shadow:var(--shadow-2);filter:saturate(105%);
}
.hero-visual::before{
  content:"";position:absolute;left:-26px;bottom:-26px;width:120px;height:120px;
  border-left:1px solid var(--line);border-bottom:1px solid var(--line);border-radius:0 0 0 90px;pointer-events:none;
}
.hero-info{position:absolute;right:-14px;bottom:-30px;width:268px;padding:20px 22px}
.hero-info h2{font-size:16px;margin-bottom:14px;color:var(--text-100)}
.hero-info li{display:flex;justify-content:space-between;gap:10px;font-size:14px;padding:7px 0;border-bottom:1px dashed var(--line-soft)}
.hero-info li:last-child{border-bottom:0;padding-bottom:0}
.hero-info li span{color:var(--text-500)}
.hero-info li strong{color:var(--brand-400);font-weight:600}

/* ============ 步骤条 ============ */
.steps-section{background:linear-gradient(180deg,var(--bg-900),var(--bg-800) 55%,var(--bg-900));border-top:1px solid var(--line-soft)}
.step-track{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;align-items:stretch;margin-top:8px}
.step-item{
  position:relative;padding:46px 22px 24px;background:var(--bg-700);border:1px solid var(--line-soft);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.step-item:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:0 14px 34px rgba(3,10,14,.55)}
.step-index{
  position:absolute;top:-18px;left:22px;width:46px;height:46px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-900);border:1px solid var(--line);color:var(--brand-400);
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;box-shadow:var(--glow);
}
.step-item h3{font-size:17px;margin-bottom:10px}
.step-item p{font-size:14px;line-height:1.75;color:var(--text-300);margin:0}
.step-item::after{
  content:"";position:absolute;top:-1px;right:-11px;width:22px;height:1px;background:var(--line);
}
.step-item:last-child::after{display:none}

/* ============ 2:1 分栏 ============ */
.split-grid{display:grid;grid-template-columns:2fr 1fr;gap:44px;align-items:start}
.rule-list li{
  display:flex;gap:18px;padding:22px;border-radius:var(--radius-card);
  background:var(--bg-800);border:1px solid var(--line-soft);margin-bottom:16px;
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.rule-list li:hover{transform:translateY(-3px);border-color:var(--line);background:var(--bg-700)}
.rule-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.12);border:1px solid var(--line);color:var(--brand-400);font-size:17px;
}
.rule-list h3{font-size:17px;margin-bottom:6px}
.rule-list p{font-size:14.5px;margin:0;line-height:1.75}
.side-card{padding:26px 24px;border-radius:var(--radius-panel)}
.side-card h3{font-size:18px;margin-bottom:6px}
.side-card .side-note{font-size:13px;color:var(--text-500);margin-bottom:18px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;padding:9px 0;border-bottom:1px dashed var(--line-soft)}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--brand-400);margin-top:6px;font-size:12px}
.side-cta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);font-size:14px;color:var(--text-300)}
.side-cta a{display:inline-flex;align-items:center;gap:6px;font-weight:600}

/* ============ 情形对照 ============ */
.compare-section{background:var(--bg-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.compare-row{
  display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line-soft);
  border-radius:var(--radius-card);overflow:hidden;margin-bottom:18px;background:var(--bg-900);
  transition:border-color var(--t),transform var(--t);
}
.compare-row:hover{border-color:var(--line);transform:translateY(-3px)}
.compare-cell{padding:24px 26px;display:flex;gap:14px;align-items:flex-start}
.compare-cell:first-child{border-right:1px solid var(--line-soft);background:rgba(255,255,255,.02)}
.compare-cell i{margin-top:5px;font-size:15px}
.compare-cell .muted-icon{color:var(--accent-400)}
.compare-cell .solid-icon{color:var(--brand-400)}
.compare-cell h3{font-size:16px;margin-bottom:6px}
.compare-cell p{font-size:14.5px;margin:0;line-height:1.75}
.compare-head{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-bottom:12px}
.compare-head span{font-size:13px;letter-spacing:1px;color:var(--text-500);padding-left:26px}

/* ============ 数据条带 ============ */
.stats-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(7,16,22,.92),rgba(7,16,22,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.stat{padding:26px 22px;border-radius:var(--radius-card);background:rgba(11,26,34,.66);border:1px solid var(--line-soft);backdrop-filter:blur(10px)}
.stat .value{font-size:clamp(30px,3.6vw,42px);font-weight:700;color:var(--brand-400);font-variant-numeric:tabular-nums;line-height:1.1}
.stat .value.warm{color:var(--accent-400)}
.stat .label{display:block;margin-top:10px;font-size:14.5px;color:var(--text-300)}
.stat .sub{display:block;margin-top:6px;font-size:13px;color:var(--text-500)}
.stats-note{margin-top:26px;font-size:14px;color:var(--text-500)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:17px;font-weight:600;transition:color var(--t)}
.faq-item summary:hover h3{color:var(--brand-400)}
.faq-item summary i{color:var(--brand-400);transition:transform var(--t);flex:0 0 auto}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{padding:0 4px 22px;max-width:780px}
.faq-body p{font-size:15px;margin:0;color:var(--text-300)}

/* ============ 相关栏目 + CTA ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;gap:10px;padding:24px;border-radius:var(--radius-card);
  background:var(--bg-800);border:1px solid var(--line-soft);
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--line);background:var(--bg-700)}
.rel-card .rel-top{display:flex;align-items:center;justify-content:space-between}
.rel-card i{color:var(--brand-400)}
.rel-card h3{font-size:17px}
.rel-card p{font-size:14.5px;margin:0;color:var(--text-300)}
.rel-card .arrow{font-size:13px;color:var(--brand-400);display:inline-flex;align-items:center;gap:6px;margin-top:6px}
.cta-band{
  margin-top:calc(var(--section) * .75);
  border-radius:var(--radius-panel);padding:44px;display:flex;flex-wrap:wrap;gap:28px;
  align-items:center;justify-content:space-between;
  background:linear-gradient(120deg,rgba(22,213,166,.12),rgba(255,138,61,.06) 60%,rgba(255,255,255,.02)),var(--bg-800);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-900);border-top:1px solid var(--line-soft);padding:70px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand p{font-size:14.5px;margin:18px 0 0;max-width:330px;color:var(--text-300)}
.footer-col h4{font-size:16px;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{color:var(--text-300);font-size:14.5px}
.footer-col ul a:hover{color:var(--brand-400)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--text-300);margin-bottom:12px}
.footer-contact i{color:var(--brand-400);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-500);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .split-grid{grid-template-columns:1.7fr 1fr;gap:32px}
}
@media (max-width:991px){
  :root{--section:64px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn-brand{display:none}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .page-hero{padding-top:calc(60px + 36px)}
  .hero-visual img{height:260px}
  .hero-info{position:static;width:100%;margin-top:22px}
  .hero-visual::before{display:none}
  .step-track{grid-template-columns:1fr;gap:34px}
  .step-item{padding:40px 22px 22px}
  .step-item::after{display:none}
  .split-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:34px}
}
@media (max-width:767px){
  .compare-row{grid-template-columns:1fr}
  .compare-cell:first-child{border-right:0;border-bottom:1px solid var(--line-soft)}
  .compare-head{display:none}
  .page-hero::after{display:none}
  .brand{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  :root{--section:48px}
  .hero-actions,.cta-actions{flex-direction:column}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .hero-visual img{height:200px}
  .stats-grid{grid-template-columns:1fr}
  .cta-band{padding:26px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg-900:#071016;
  --bg-800:#0B1A22;
  --bg-700:#102732;
  --bg-600:#17333D;
  --brand-400:#3BE8BE;
  --brand-500:#16D5A6;
  --brand-600:#0FAE88;
  --accent-400:#FFA96B;
  --accent-500:#FF8A3D;
  --text-100:#EAF6F4;
  --text-300:#A9C2C0;
  --text-500:#6E8586;
  --line:rgba(22,213,166,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --radius-card:16px;
  --radius-float:20px;
  --radius-btn:12px;
  --radius-input:12px;
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-gap:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-300);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(22,213,166,.14),transparent 62%),
    radial-gradient(520px 360px at 92% 8%,rgba(255,138,61,.08),transparent 66%);
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{color:var(--text-100);font-weight:700;margin:0;letter-spacing:.2px}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:var(--section-gap) 0;position:relative;z-index:1}
.section-alt{background:var(--bg-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.35;margin-bottom:16px}
.section-sub{font-size:15px;color:var(--text-300);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.6px;color:var(--brand-400);
  background:rgba(22,213,166,.10);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-400)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:13px 26px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,var(--brand-400),var(--brand-600));
  color:#04140F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);color:#04140F;box-shadow:0 12px 34px rgba(22,213,166,.42)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(22,213,166,.3)}
.btn-outline{
  background:transparent;
  border-color:var(--brand-500);
  color:var(--brand-400);
}
.btn-outline:hover{background:rgba(22,213,166,.12);color:var(--brand-400);transform:translateY(-2px)}
.btn-ghost{
  background:var(--glass);
  border-color:var(--line-soft);
  color:var(--text-100);
  backdrop-filter:blur(14px) saturate(130%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.btn-ghost:hover{background:var(--bg-600);color:var(--text-100);transform:translateY(-2px)}
.btn:disabled,.btn.disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* ===== 顶部公告条 ===== */
.topbar{
  background:linear-gradient(90deg,rgba(22,213,166,.16),rgba(255,138,61,.10));
  border-bottom:1px solid var(--line-soft);
  font-size:13px;
  color:var(--text-100);
  position:relative;z-index:60;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px}
.topbar-text{display:inline-flex;align-items:center;gap:8px;line-height:1.6}
.topbar-text i{color:var(--brand-400)}
.topbar-close{
  background:transparent;border:0;color:var(--text-300);
  font-size:18px;line-height:1;cursor:pointer;padding:4px 8px;border-radius:8px;
}
.topbar-close:hover{color:var(--text-100);background:rgba(255,255,255,.08)}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:70}
.nav-wrap{
  background:rgba(7,16,22,.82);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--line-soft);
  transition:background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height 180ms var(--ease)}
.site-header.shrink .nav-inner{height:60px}
.site-header.shrink .nav-wrap{box-shadow:0 12px 32px rgba(0,0,0,.45);background:rgba(7,16,22,.94)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-400),var(--brand-600));
  position:relative;box-shadow:var(--glow);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 6px;
  border:2px solid rgba(4,20,15,.75);
  border-radius:50% 50% 6px 6px;
  border-bottom-color:transparent;
}
.brand-text{color:var(--text-100);font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav a{
  color:var(--text-300);
  font-size:15px;
  padding:9px 14px;
  border-radius:10px;
  position:relative;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.main-nav a:hover{color:var(--text-100);background:rgba(255,255,255,.06)}
.main-nav a.active{color:var(--brand-400);background:rgba(22,213,166,.12)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-400),transparent);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-soft);
  color:var(--text-300);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.icon-btn:hover{color:var(--brand-400);background:var(--bg-600)}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-soft);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-100);transition:transform 180ms var(--ease),opacity 180ms var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 页头 HERO ===== */
.page-hero{padding:calc(72px + 34px) 0 0}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-500);margin-bottom:26px;
}
.breadcrumb-nav a{color:var(--text-300)}
.breadcrumb-nav a:hover{color:var(--brand-400)}
.breadcrumb-nav .sep{color:var(--text-500)}
.breadcrumb-nav .current{color:var(--brand-400)}
.hero-split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-copy h1{font-size:clamp(30px,4.2vw,46px);line-height:1.3;margin-bottom:20px}
.hero-copy .lead{font-size:17px;color:var(--text-300);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-list{display:flex;flex-wrap:wrap;gap:22px}
.trust-list li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-300)}
.trust-list i{color:var(--brand-400)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;height:340px;object-fit:cover;
  border-radius:var(--radius-float);
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.hero-visual::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56%;
  border-radius:0 0 var(--radius-float) var(--radius-float);
  background:linear-gradient(180deg,rgba(7,16,22,0),rgba(7,16,22,.88));
  pointer-events:none;
}
.glass-card{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-float);
  backdrop-filter:blur(14px) saturate(130%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-1);
  padding:18px 20px;
}
.glass-card h3{font-size:16px;margin-bottom:12px}
.glass-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;padding:6px 0;border-bottom:1px dashed var(--line-soft)}
.glass-row:last-child{border-bottom:0}
.glass-row span:first-child{color:var(--text-500)}
.glass-row span:last-child{color:var(--text-100);font-weight:600;font-variant-numeric:tabular-nums}
.glass-row .dot-live{display:inline-flex;align-items:center;gap:6px;color:var(--brand-400)}
.glass-row .dot-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-400);box-shadow:0 0 0 4px rgba(22,213,166,.16)}

/* ===== 数据条带 ===== */
.stat-band{
  margin-top:56px;
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat-item{background:var(--bg-800);padding:26px 22px;text-align:left}
.stat-num{
  font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--brand-400);
  font-variant-numeric:tabular-nums;line-height:1.2;display:block;margin-bottom:6px;
}
.stat-item:nth-child(2n) .stat-num{color:var(--accent-400)}
.stat-label{font-size:14px;color:var(--text-300)}

/* ===== 对照表 ===== */
.table-shell{
  background:var(--bg-800);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto}
.compare-table{width:100%;min-width:720px;border-collapse:collapse;font-size:15px}
.compare-table th{
  background:var(--bg-700);color:var(--text-100);font-weight:600;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare-table td{padding:16px 22px;border-bottom:1px solid var(--line-soft);color:var(--text-300);vertical-align:top;line-height:1.75}
.compare-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.compare-table tbody tr:hover{background:rgba(22,213,166,.06)}
.compare-table tbody tr:last-child td{border-bottom:0}
.cell-strong{color:var(--text-100);font-weight:600}
.tag{
  display:inline-block;font-size:12px;line-height:1.6;
  padding:2px 10px;border-radius:999px;
  background:rgba(22,213,166,.14);color:var(--brand-400);
  border:1px solid var(--line);white-space:nowrap;
}
.tag-warm{background:rgba(255,138,61,.14);color:var(--accent-400);border-color:rgba(255,138,61,.24)}

/* ===== 双栏对照卡 ===== */
.duo-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.duo-card{
  background:var(--bg-800);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.duo-card:hover{transform:translateY(-3px);border-color:var(--line)}
.duo-card.warm{background:linear-gradient(180deg,rgba(255,138,61,.08),rgba(11,26,34,.9))}
.duo-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.duo-icon{
  width:44px;height:44px;border-radius:14px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.12);border:1px solid var(--line);color:var(--brand-400);font-size:18px;
}
.duo-card.warm .duo-icon{background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.24);color:var(--accent-400)}
.duo-head h3{font-size:19px}
.duo-card ul{display:grid;gap:12px}
.duo-card li{position:relative;padding-left:22px;font-size:15px;color:var(--text-300)}
.duo-card li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;background:var(--brand-500);transform:rotate(45deg)}
.duo-card.warm li::before{background:var(--accent-500)}

/* ===== 流程步骤条 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step-item{
  background:var(--bg-700);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:26px 22px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step-item:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;margin-bottom:16px;
  background:rgba(22,213,166,.12);border:1px solid var(--line);
  color:var(--brand-400);font-weight:700;font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:17px;margin-bottom:10px}
.step-item p{font-size:14px;color:var(--text-300);margin:0}

/* ===== 图文交替 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.reverse .split-media{order:2}
.split-media img{
  width:100%;height:300px;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line-soft);box-shadow:var(--shadow-1);
  transition:transform 300ms var(--ease);
}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px}
.check-list{display:grid;gap:14px;margin-top:22px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-300)}
.check-list i{color:var(--brand-400);margin-top:6px;font-size:14px}

/* ===== FAQ ===== */
.faq-list{border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;background:var(--bg-800)}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;
  color:var(--text-100);font-size:17px;font-weight:600;line-height:1.6;
  transition:background 180ms var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.03)}
.faq-q i{color:var(--brand-400);font-size:14px;transition:transform 180ms var(--ease);flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 180ms var(--ease)}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--text-300);margin:0}

/* ===== 相关栏目 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:var(--bg-800);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.rel-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.05)}
.rel-media .tag{position:absolute;left:12px;bottom:12px;background:rgba(7,16,22,.78);color:var(--brand-400);border-color:var(--line)}
.rel-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px}
.rel-body p{font-size:14px;color:var(--text-300);margin:0}
.rel-more{margin-top:auto;font-size:14px;color:var(--brand-400);display:inline-flex;align-items:center;gap:8px}
.rel-more i{transition:transform 180ms var(--ease)}
.rel-card:hover .rel-more i{transform:translateX(4px)}

/* ===== CTA 条 + 表单 ===== */
.cta-band{
  display:grid;grid-template-columns:1.15fr .85fr;gap:0;
  border:1px solid var(--line);
  border-radius:var(--radius-float);
  overflow:hidden;
  background:
    linear-gradient(90deg,rgba(22,213,166,.10),rgba(11,26,34,.6) 55%),
    url("/assets/images/backpic/back-2.webp") right center/cover no-repeat,
    var(--bg-800);
}
.cta-copy{padding:44px 42px}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-copy p{color:var(--text-300);margin-bottom:24px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.form-card{background:rgba(11,26,34,.92);padding:36px 34px;border-left:1px solid var(--line-soft)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-hint{font-size:14px;color:var(--text-500);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--text-300);margin-bottom:8px}
.field .req{color:var(--accent-500);margin-left:4px}
.form-control,.form-select{
  width:100%;background:var(--bg-700);border:1px solid var(--line-soft);
  border-radius:var(--radius-input);color:var(--text-100);
  padding:12px 14px;font-size:15px;line-height:1.5;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.form-control::placeholder{color:var(--text-500)}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(22,213,166,.14);
  background:var(--bg-700);color:var(--text-100);
}
.form-select option{background:var(--bg-800);color:var(--text-100)}
.privacy-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-500);margin:16px 0 20px;line-height:1.7}
.privacy-row input{margin-top:4px;accent-color:var(--brand-500)}
.form-note{margin-top:14px;font-size:13px;color:var(--brand-400);min-height:20px}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:var(--section-gap);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-300);max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-100)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-300)}
.footer-col a:hover{color:var(--brand-400)}
.footer-contact li{font-size:14px;color:var(--text-300);display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:var(--brand-400);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line-soft);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-500);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .hero-split{gap:38px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  :root{--section-gap:64px}
  .page-hero{padding-top:calc(60px + 26px)}
  .hero-split{grid-template-columns:1fr;gap:34px}
  .hero-visual img{height:280px}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr}
  .form-card{border-left:0;border-top:1px solid var(--line-soft)}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,16,22,.97);
    backdrop-filter:blur(14px) saturate(130%);
    border-bottom:1px solid var(--line-soft);
    padding:14px 20px 22px;
    margin:0;
    display:none;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 14px;font-size:16px}
  .main-nav a.active::after{display:none}
  .nav-wrap{position:relative}
  .menu-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:48px 0}
  :root{--section-gap:48px}
  .stat-band{grid-template-columns:1fr;border-radius:var(--radius-card)}
  .steps{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .duo-grid{grid-template-columns:1fr}
  .hero-visual img{height:230px}
  .cta-copy,.form-card{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;justify-content:flex-start}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .trust-list{gap:14px}
  .compare-table th,.compare-table td{padding:14px 16px}
  .brand-text{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-900:#071016;
  --bg-800:#0B1A22;
  --bg-700:#102732;
  --bg-600:#17333D;
  --brand-400:#3BE8BE;
  --brand-500:#16D5A6;
  --brand-600:#0FAE88;
  --accent-400:#FFA96B;
  --accent-500:#FF8A3D;
  --text-100:#EAF6F4;
  --text-300:#A9C2C0;
  --text-500:#6E8586;
  --line:rgba(22,213,166,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --success:#34D399;
  --warn:#FBBF24;
  --danger:#F87171;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-1:0 8px 24px rgba(3,10,14,.45);
  --shadow-2:0 20px 60px rgba(0,0,0,.55);
  --glow:0 8px 28px rgba(22,213,166,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-300);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 88% -6%,rgba(22,213,166,.14),transparent 62%),
    radial-gradient(560px 380px at 4% 34%,rgba(255,138,61,.07),transparent 66%);
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--brand-500)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--brand-400);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{color:var(--text-100);margin:0;font-weight:700;line-height:1.4}
h1{font-size:clamp(30px,4.2vw,48px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{position:relative;z-index:1;padding:88px 0}
.section-alt{background:var(--bg-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-400);
  padding:6px 14px;border-radius:999px;border:1px solid var(--line);
  background:rgba(22,213,166,.08);margin-bottom:16px;
}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--text-300);margin:0;font-size:16px}

/* ============ 按钮 ============ */
.btn{transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 24px;border:1px solid transparent}
.btn-main{background:var(--brand-500);color:#04120E;box-shadow:var(--glow)}
.btn-main:hover{background:var(--brand-400);color:#04120E;transform:translateY(-2px);box-shadow:0 12px 34px rgba(22,213,166,.42)}
.btn-main:active{transform:translateY(0);background:var(--brand-600);color:#04120E}
.btn-line{background:transparent;color:var(--brand-400);border:1px solid var(--brand-500)}
.btn-line:hover{background:rgba(22,213,166,.1);color:var(--brand-400);transform:translateY(-2px)}
.btn-line:active{background:rgba(22,213,166,.18);transform:translateY(0)}
.btn-ghost{background:var(--glass);color:var(--text-100);border:1px solid var(--line-soft);backdrop-filter:blur(14px) saturate(130%);box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}
.btn-ghost:hover{color:var(--text-100);border-color:var(--line);transform:translateY(-2px);background:rgba(255,255,255,.1)}
.btn:disabled,.btn.disabled{opacity:.45;box-shadow:none;transform:none}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(7,16,22,.74);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background 200ms var(--ease),border-color 200ms var(--ease),height 200ms var(--ease);
}
.site-header.scrolled{background:rgba(7,16,22,.94);border-bottom-color:var(--line-soft)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:var(--nav-h);transition:height 200ms var(--ease)}
.site-header.scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:700;font-size:18px;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--text-100)}
.brand-mark{
  width:26px;height:26px;border-radius:50%;flex:0 0 auto;position:relative;
  background:conic-gradient(from 200deg,var(--brand-500),var(--brand-400) 45%,rgba(255,138,61,.85) 72%,var(--brand-500));
  box-shadow:0 0 0 4px rgba(22,213,166,.12);
}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--bg-900)}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.main-nav a{
  color:var(--text-300);font-size:15px;padding:8px 14px;border-radius:10px;
  transition:color 180ms var(--ease),background 180ms var(--ease);
  position:relative;white-space:nowrap;
}
.main-nav a:hover{color:var(--text-100);background:rgba(255,255,255,.05)}
.main-nav a.active{color:var(--brand-400);background:rgba(22,213,166,.1)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--accent-400));
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line-soft);color:var(--text-300);cursor:pointer;
  transition:all 180ms var(--ease);
}
.icon-btn:hover{color:var(--brand-400);border-color:var(--line);transform:translateY(-2px)}
.nav-toggle{display:none}
.mobile-panel{
  display:none;padding:16px 0 26px;border-top:1px solid var(--line-soft);
}
.mobile-panel.open{display:block}
.mobile-panel a{
  display:block;padding:14px 4px;color:var(--text-300);font-size:16px;
  border-bottom:1px solid var(--line-soft);
}
.mobile-panel a.active{color:var(--brand-400)}
.mobile-panel .btn{width:100%;margin-top:18px;text-align:center}

/* ============ 页头 Hero ============ */
.page-hero{position:relative;z-index:1;padding:calc(var(--nav-h) + 40px) 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-500);margin-bottom:20px}
.breadcrumb a{color:var(--text-500)}
.breadcrumb a:hover{color:var(--brand-400)}
.breadcrumb span{color:var(--text-300)}
.hero-head{max-width:820px}
.hero-head h1{margin-bottom:18px}
.hero-head .lead{font-size:17px;color:var(--text-300);margin:0}
.hero-media{
  position:relative;margin-top:36px;height:310px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,22,.18) 0%,rgba(7,16,22,.72) 68%,rgba(7,16,22,.96) 100%);
}
.hero-media-caption{
  position:absolute;left:26px;bottom:22px;right:26px;z-index:2;
  display:flex;flex-wrap:wrap;gap:10px;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;background:rgba(7,16,22,.62);
  border:1px solid var(--line);color:var(--brand-400);backdrop-filter:blur(8px);
}
.chip-accent{color:var(--accent-400);border-color:rgba(255,169,107,.3);background:rgba(255,138,61,.12)}

/* ============ 数据条带 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--r-card);
  overflow:hidden;margin-top:48px;
}
.stat-cell{background:var(--bg-800);padding:28px 26px}
.stat-cell .num{font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--brand-400);line-height:1.2}
.stat-cell .num em{font-style:normal;font-size:15px;color:var(--accent-400);margin-left:4px;font-weight:600}
.stat-cell .label{margin-top:8px;font-size:14px;color:var(--text-300)}
.stat-cell p{margin:10px 0 0;font-size:13px;color:var(--text-500);line-height:1.7}

/* ============ FAQ 分组 ============ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:36px}
.faq-group{background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);transition:border-color 180ms var(--ease),transform 180ms var(--ease)}
.faq-group:hover{border-color:var(--line)}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.faq-group-head .idx{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.1);border:1px solid var(--line);color:var(--brand-400);font-weight:700;font-size:15px;
}
.faq-group-head h3{margin:0}
.faq-group-head .count{margin-left:auto;font-size:13px;color:var(--text-500)}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-body-padding-x:0}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line-soft)}
.accordion-item:first-of-type{border-top:0}
.accordion-button{
  background:transparent;color:var(--text-100);font-size:17px;font-weight:600;
  padding:18px 40px 18px 0;box-shadow:none;line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand-400);background:transparent;box-shadow:none}
.accordion-button:hover{color:var(--brand-400)}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand-400);width:auto;height:auto;margin-left:auto;
  transition:transform 180ms var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-body{padding:0 76px 22px 0;color:var(--text-300);font-size:15px;line-height:1.85}
.accordion-body strong{color:var(--text-100);font-weight:600}
.accordion-body ul{margin-top:10px;display:grid;gap:8px}
.accordion-body li{position:relative;padding-left:18px;font-size:15px}
.accordion-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);
}

/* ============ 步骤条 ============ */
.flow-layout{display:grid;grid-template-columns:2fr 1fr;gap:44px;align-items:start}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{
  position:relative;background:var(--bg-700);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:26px 22px;transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.step .n{
  width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,213,166,.12);border:1px solid var(--line);color:var(--brand-400);
  font-weight:700;font-size:14px;margin-bottom:14px;
}
.step h4{margin-bottom:8px;font-size:16px}
.step p{font-size:14px;color:var(--text-500);margin:0;line-height:1.75}
.flow-side{
  background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:26px;backdrop-filter:blur(14px) saturate(130%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),var(--shadow-1);
}
.flow-side h3{font-size:18px;margin-bottom:14px}
.flow-side ul{display:grid;gap:12px}
.flow-side li{display:flex;gap:10px;font-size:14px;color:var(--text-300);line-height:1.7}
.flow-side li i{color:var(--brand-400);margin-top:5px;font-size:13px}
.flow-side .divider{height:1px;background:var(--line-soft);margin:20px 0}
.flow-side .note{font-size:13px;color:var(--text-500);margin:0}

/* ============ 对照卡 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.compare-col{background:var(--bg-800);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1)}
.compare-col.accent{border-color:rgba(255,169,107,.22)}
.compare-col h3{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.compare-col h3 i{font-size:16px;color:var(--brand-400)}
.compare-col.accent h3 i{color:var(--accent-400)}
.compare-col .sub{font-size:14px;color:var(--text-500);margin-bottom:20px}
.compare-list{display:grid;gap:14px}
.compare-item{
  display:flex;gap:12px;padding:14px 16px;border-radius:12px;background:var(--bg-700);
  border:1px solid var(--line-soft);transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.compare-item:hover{border-color:var(--line);transform:translateX(3px)}
.compare-item i{font-size:14px;margin-top:5px;color:var(--brand-400)}
.compare-col.accent .compare-item i{color:var(--accent-400)}
.compare-item b{display:block;color:var(--text-100);font-size:15px;font-weight:600;margin-bottom:2px}
.compare-item span{font-size:13px;color:var(--text-500);line-height:1.7}

/* ============ 相关栏目 ============ */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.related-card{
  display:flex;flex-direction:column;gap:12px;background:var(--bg-800);
  border:1px solid var(--line-soft);border-radius:var(--r-card);padding:26px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.related-card:hover{transform:translateY(-3px);border-color:var(--line);box-shadow:var(--shadow-1)}
.related-card i.ico{font-size:18px;color:var(--brand-400)}
.related-card h3{font-size:17px}
.related-card p{font-size:14px;color:var(--text-500);margin:0;line-height:1.75}
.related-card .go{margin-top:auto;font-size:14px;color:var(--brand-400);display:inline-flex;align-items:center;gap:8px}
.related-card:hover .go i{transform:translateX(4px)}
.related-card .go i{transition:transform 180ms var(--ease)}

/* ============ CTA + 表单 ============ */
.cta-panel{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  background:linear-gradient(155deg,rgba(22,213,166,.09),rgba(255,255,255,.03) 55%,rgba(255,138,61,.06));
  border:1px solid var(--line);border-radius:var(--r-lg);padding:44px;box-shadow:var(--shadow-2);
}
.cta-panel h2{margin-bottom:14px}
.cta-panel p{color:var(--text-300)}
.cta-points{display:grid;gap:12px;margin-top:24px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--text-300)}
.cta-points i{color:var(--brand-400);margin-top:5px;font-size:13px}
.form-card{background:rgba(7,16,22,.6);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:28px;backdrop-filter:blur(14px) saturate(130%);box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}
.form-card .form-label{font-size:14px;color:var(--text-300);margin-bottom:8px}
.form-card .req{color:var(--accent-400);margin-left:4px}
.form-control,.form-select{
  background:var(--bg-700);border:1px solid var(--line-soft);color:var(--text-100);
  border-radius:var(--r-btn);padding:12px 14px;font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.form-control::placeholder{color:var(--text-500)}
.form-control:focus,.form-select:focus{
  background:var(--bg-600);border-color:var(--brand-500);color:var(--text-100);
  box-shadow:0 0 0 4px rgba(22,213,166,.14);
}
.form-select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%233BE8BE'%3E%3Cpath d='M8 11 3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:14px;
  padding-right:38px;
}
.form-check-input{background-color:var(--bg-700);border-color:var(--line-soft);width:18px;height:18px;margin-top:2px}
.form-check-input:checked{background-color:var(--brand-500);border-color:var(--brand-500)}
.form-check-input:focus{box-shadow:0 0 0 4px rgba(22,213,166,.16)}
.form-check-label{font-size:13px;color:var(--text-500);line-height:1.75}
.form-msg{margin-top:14px;font-size:14px;color:var(--success);display:none}
.form-msg.show{display:block}

/* ============ 页脚 ============ */
.site-footer{position:relative;z-index:1;background:var(--bg-800);border-top:1px solid var(--line-soft);padding:70px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px;font-size:19px}
.footer-brand p{font-size:14px;color:var(--text-500);line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-100)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:var(--text-500)}
.footer-col a:hover{color:var(--brand-400)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-500);line-height:1.7}
.footer-contact i{color:var(--brand-400);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-500);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .flow-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-panel{padding:34px}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .compare{grid-template-columns:1fr}
  .related{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;gap:32px}
  .hero-media{height:250px}
}
@media (max-width:767.98px){
  .stat-band{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .accordion-body{padding-right:20px}
  .faq-group{padding:22px}
}
@media (max-width:575.98px){
  .section{padding:48px 0}
  .container{padding:0 16px}
  .header-actions .btn-main{padding:10px 14px;font-size:14px}
  .hero-media{height:200px;border-radius:var(--r-card)}
  .hero-media-caption{left:16px;right:16px;bottom:16px}
  .stat-band{grid-template-columns:1fr}
  .stat-cell{padding:22px 20px}
  .steps{grid-template-columns:1fr}
  .btn{width:100%;text-align:center}
  .header-actions .btn{width:auto}
  .cta-panel{padding:24px}
  .form-card{padding:20px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}