/* roulang page: index */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --r-pill:999px;
  --r-card:16px;
  --r-input:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(15,26,23,.05),0 12px 32px -18px rgba(15,26,23,.18);
  --sh-2:0 18px 44px -22px rgba(15,26,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar-w:232px;
  --font-cn:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-accent-2)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.01em;line-height:1.25}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:var(--c-accent);color:var(--c-ink)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--c-line);border-radius:8px}
::-webkit-scrollbar-thumb{background:rgba(22,69,60,.35);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 侧栏导航 ============ */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:var(--c-bg);
  display:flex;flex-direction:column;
  padding:26px 16px 22px;z-index:80;
  transition:width .24s var(--ease),transform .28s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:6px;background:var(--c-accent);
  color:var(--c-ink);font-family:var(--font-num);font-weight:900;font-size:13px;
  display:grid;place-items:center;
}
.brand-name{font-size:15px;font-weight:700;line-height:1.3;color:var(--c-bg)}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px;border-radius:10px;
  color:rgba(245,243,238,.76);font-size:14.5px;line-height:1.35;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-nav a:hover{background:rgba(201,242,77,.10);color:#fff}
.side-nav a.is-active{background:rgba(201,242,77,.10);color:#fff;font-weight:700}
.side-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:var(--c-accent);
}
.nav-dot{width:6px;height:6px;flex:0 0 6px;border-radius:1px;background:rgba(245,243,238,.45)}
.side-nav a.is-active .nav-dot,.side-nav a:hover .nav-dot{background:var(--c-accent)}
.side-div{height:1px;background:rgba(245,243,238,.12);margin:14px 12px}
.side-note{padding:0 12px;font-size:13px;line-height:1.6;color:rgba(245,243,238,.5)}
.side-cta{
  margin-top:auto;display:block;text-align:center;
  background:var(--c-accent);color:var(--c-ink) !important;
  border-radius:var(--r-pill);padding:13px 16px;font-weight:700;font-size:15px;
  transition:transform .2s var(--ease),filter .2s var(--ease);
}
.side-cta:hover{filter:brightness(1.06);transform:translateY(-2px);color:var(--c-ink)}
.side-cta::after{content:"";}

/* ============ 顶部移动栏 / 抽屉 ============ */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:60px;z-index:90;
  background:var(--c-ink);color:var(--c-bg);align-items:center;justify-content:space-between;
  padding:0 14px;
}
.topbar-brand{display:flex;align-items:center;gap:9px;color:var(--c-bg);font-weight:700;font-size:14.5px}
.burger{
  width:44px;height:44px;border-radius:10px;color:var(--c-bg);
  display:grid;place-items:center;gap:0;
}
.burger span{display:block;width:20px;height:2px;background:var(--c-bg);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--c-bg);border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,26,23,.55);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 主内容 ============ */
.site-main{margin-left:var(--sidebar-w)}
section{position:relative}
.sec{padding:96px 0;border-top:1px solid var(--c-line)}
.sec-dark{background:var(--c-ink);color:var(--c-bg);border-top:0}
.sec-dark .sec-num{color:rgba(245,243,238,.18)}
.sec-dark .sec-kicker{color:rgba(245,243,238,.55)}
.sec-dark .sec-title{color:var(--c-bg)}
.sec-dark .sec-sub{color:rgba(245,243,238,.72)}
.sec-head{display:flex;align-items:flex-end;gap:18px;margin-bottom:28px}
.sec-num{font-family:var(--font-num);font-size:clamp(44px,5.4vw,80px);font-weight:900;line-height:.82;color:rgba(15,26,23,.10);letter-spacing:-.04em}
.sec-line{flex:1;height:1px;background:var(--c-line);margin-bottom:10px}
.sec-dark .sec-line{background:rgba(245,243,238,.18)}
.sec-kicker{font-size:13px;letter-spacing:.18em;color:var(--c-muted);white-space:nowrap;margin-bottom:6px}
.sec-title{font-size:clamp(24px,3vw,40px);font-weight:800;line-height:1.22;max-width:900px}
.sec-sub{margin-top:14px;font-size:16.5px;line-height:1.8;color:var(--c-muted);max-width:820px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  color:var(--c-primary);white-space:nowrap;padding-bottom:6px;
}
.link-more i{font-style:normal;transition:transform .24s var(--ease)}
.link-more:hover i{transform:translateX(4px)}
.link-more span{position:relative}
.link-more span::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.link-more:hover span::after{transform:scaleX(1)}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .24s var(--ease),color .24s var(--ease),transform .2s var(--ease),box-shadow .24s var(--ease);
}
.btn i{font-style:normal;transition:transform .24s var(--ease)}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:var(--c-bg)}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink);box-shadow:var(--sh-2)}
.btn-accent{background:var(--c-accent);color:var(--c-ink)}
.btn-accent:hover{background:#d8fb66;color:var(--c-ink)}
.btn-ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(22,69,60,.06);color:var(--c-primary)}
.btn-ghost-light{border:1px solid rgba(245,243,238,.35);color:var(--c-bg);background:transparent}
.btn-ghost-light:hover{background:rgba(245,243,238,.10);color:var(--c-bg)}
.btn:active{transform:scale(.98)}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  font-size:13px;font-weight:600;background:rgba(22,69,60,.08);color:var(--c-primary);
}
.badge-sale{background:var(--c-accent-2);color:#fff}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}

/* ============ Hero ============ */
.hero{background:var(--c-ink);color:var(--c-bg);padding:96px 0 0;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;
  color:rgba(245,243,238,.62);margin-bottom:24px;
}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--c-accent)}
.hero h1{
  font-size:clamp(34px,5.2vw,68px);font-weight:900;line-height:1.06;letter-spacing:-.02em;
  color:#fff;margin-bottom:24px;
}
.hero h1 em{font-style:normal;color:var(--c-accent)}
.hero-sub{font-size:20px;line-height:1.7;color:rgba(245,243,238,.8);max-width:560px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-trust{display:flex;flex-wrap:wrap;gap:0 18px;font-size:13px;color:rgba(245,243,238,.62)}
.hero-trust li{display:flex;align-items:center;gap:18px}
.hero-trust li+li::before{content:"";width:1px;height:12px;background:rgba(245,243,238,.28)}
.hero-media{position:relative}
.hero-media::before{
  content:"";position:absolute;inset:-12px;border:1px solid rgba(245,243,238,.14);
  border-radius:24px;pointer-events:none;
}
.hero-media::after{
  content:"";position:absolute;inset:-12px;border-radius:24px;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(245,243,238,.10) 0 1px,transparent 1px 12px);
  background-size:100% 14px;background-repeat:no-repeat;background-position:top;
  opacity:.5;
}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;
  border:1px solid rgba(245,243,238,.14);background:var(--c-surface-2);
}
.ticker{
  margin-top:72px;height:40px;display:flex;align-items:center;overflow:hidden;
  border-top:1px solid rgba(245,243,238,.12);
}
.ticker-track{display:flex;gap:48px;white-space:nowrap;animation:ticker 34s linear infinite;font-size:13px;color:rgba(245,243,238,.62)}
.ticker-track span{display:inline-flex;align-items:center;gap:10px}
.ticker-track span::before{content:"";width:5px;height:5px;background:var(--c-accent);border-radius:1px}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ 优惠阶梯 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start;padding:24px 0}
.tier-card{transition:transform .3s var(--ease)}
.tier-card:nth-child(2){transform:translateY(-20px)}
.tier-card:nth-child(4){transform:translateY(20px)}
.tier-inner{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;height:100%;box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tier-card:hover .tier-inner{box-shadow:var(--sh-2);border-color:rgba(22,69,60,.28)}
.tier-level{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.tier-step{font-family:var(--font-num);font-size:13px;font-weight:800;color:var(--c-muted);letter-spacing:.08em}
.tier-inner h3{font-size:20px;margin-bottom:6px}
.tier-desc{font-size:13.5px;color:var(--c-muted);line-height:1.7;margin-bottom:18px}
.tier-threshold{display:flex;align-items:baseline;gap:6px;padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--c-line)}
.tier-threshold b{font-family:var(--font-num);font-size:34px;font-weight:900;line-height:1;color:var(--c-primary)}
.tier-threshold small{font-size:13px;color:var(--c-muted)}
.tier-list li{
  position:relative;padding-left:20px;font-size:14px;color:#31423D;line-height:1.7;margin-bottom:9px;
}
.tier-list li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:1px;background:var(--c-primary)}
.tier-foot{margin-top:20px}

/* ============ 对比表 ============ */
.cmp-wrap{position:relative;overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);box-shadow:var(--sh-1)}
.cmp-table{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px}
.cmp-table th,.cmp-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--c-line)}
.cmp-table thead th{
  position:sticky;top:0;z-index:5;background:var(--c-surface-2);
  font-size:14px;font-weight:700;color:var(--c-ink);white-space:nowrap;
}
.cmp-table tbody th{
  position:sticky;left:0;z-index:3;background:var(--c-surface);font-weight:600;
  color:var(--c-ink);min-width:200px;
}
.cmp-table td{color:var(--c-muted)}
.cmp-table td.ok{color:var(--c-primary);font-weight:700}
.cmp-table tbody tr:hover td,.cmp-table tbody tr:hover th{background:var(--c-surface-2)}
.cmp-table .is-rec{background:rgba(201,242,77,.10)}
.cmp-table th.is-rec{box-shadow:inset 0 3px 0 var(--c-accent);color:var(--c-primary)}
.cmp-mark{font-family:var(--font-num);font-weight:900}
.cmp-tip{margin-top:14px;font-size:13px;color:var(--c-muted)}

/* ============ 能力差异 ============ */
.cap-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cap-left p{font-size:16px;line-height:1.85;color:var(--c-muted)}
.cap-list{border-top:1px solid var(--c-line)}
.cap-item{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--c-line);transition:background .2s var(--ease)}
.cap-item:hover{background:rgba(236,234,227,.55)}
.cap-item .idx{font-family:var(--font-num);font-size:22px;font-weight:900;color:var(--c-primary);letter-spacing:-.02em}
.cap-item h3{font-size:18px;font-weight:700;margin-bottom:6px}
.cap-item p{margin:0;font-size:14.5px;color:var(--c-muted);line-height:1.75}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:44px;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.metric{padding:24px 20px;border-left:1px solid var(--c-line)}
.metric:first-child{border-left:0;padding-left:0}
.metric b{display:block;font-family:var(--font-num);font-size:clamp(30px,3.4vw,44px);font-weight:900;line-height:1;color:var(--c-ink);letter-spacing:-.03em}
.metric span{display:block;margin-top:8px;font-size:13px;color:var(--c-muted)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-card.is-featured{grid-column:span 2}
.news-thumb{position:relative;overflow:hidden;background:var(--c-surface-2)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-body h3{font-size:17.5px;font-weight:700;line-height:1.5;color:var(--c-ink)}
.news-card.is-featured .news-body h3{font-size:22px}
.news-sum{margin:0;font-size:14px;line-height:1.75;color:var(--c-muted)}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{
  border:1px dashed var(--c-line);border-radius:var(--r-card);padding:48px 24px;text-align:center;
  background:rgba(255,255,255,.6);
}
.news-empty p{font-size:15px;color:var(--c-muted);margin-bottom:18px}

/* ============ 限时入口 ============ */
.limited{background:var(--c-primary-deep);color:var(--c-bg);position:relative;overflow:hidden}
.limited::before{
  content:"";position:absolute;inset:0;opacity:.08;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(245,243,238,.5) 0 1px,transparent 1px 14px);
}
.limited-inner{
  position:relative;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
  padding:52px 0;
}
.limited h2{font-size:clamp(22px,2.6vw,32px);color:#fff;margin-bottom:10px}
.limited p{color:rgba(245,243,238,.72);font-size:15px;margin:0}
.countdown{display:flex;align-items:stretch;gap:0;border:1px solid rgba(245,243,238,.18);border-radius:14px;overflow:hidden}
.cd-cell{padding:14px 20px;min-width:82px;text-align:center;border-left:1px solid rgba(245,243,238,.18)}
.cd-cell:first-child{border-left:0}
.cd-num{display:block;font-family:var(--font-num);font-size:32px;font-weight:900;line-height:1;color:var(--c-accent);letter-spacing:-.02em}
.cd-lb{display:block;margin-top:6px;font-size:12.5px;color:rgba(245,243,238,.6)}

/* ============ 流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:12px}
.flow-step{position:relative;padding:0 28px 0 0}
.flow-step::after{
  content:"";position:absolute;left:0;top:44px;right:0;height:1px;background:var(--c-line);
}
.flow-step:last-child::after{display:none}
.flow-num{
  position:relative;z-index:2;display:block;font-family:var(--font-num);font-weight:900;
  font-size:clamp(34px,4vw,52px);line-height:1;color:rgba(15,26,23,.14);letter-spacing:-.04em;
  margin-bottom:26px;background:var(--c-bg);padding-right:12px;width:max-content;
}
.flow-step h3{font-size:18px;margin-bottom:10px}
.flow-step p{font-size:14.5px;color:var(--c-muted);line-height:1.8;margin:0}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:16px 8px 16px 0;text-align:left;font-size:16.5px;font-weight:600;
  color:var(--c-ink);position:relative;transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:-14px;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--c-accent);transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .faq-q::before{transform:scaleY(1)}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;border:1px solid var(--c-line);
  display:grid;place-items:center;font-family:var(--font-num);font-size:16px;font-weight:800;
  color:var(--c-primary);transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(90deg);background:rgba(201,242,77,.35);border-color:transparent}
.faq-a{padding:0 56px 24px 0}
.faq-a p{margin:0;font-size:15px;line-height:1.8;color:var(--c-muted)}

/* ============ 咨询表单 ============ */
.consult{background:var(--c-surface-2)}
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.consult-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1)}
.c-form{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:13px;color:var(--c-muted)}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--c-line);border-radius:var(--r-input);
  background:#fff;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,69,60,.12);
}
.form-note{grid-column:1/-1;font-size:13px;color:var(--c-muted);line-height:1.7}
.form-msg{grid-column:1/-1;display:none;font-size:14px;font-weight:600;color:var(--c-primary);
  background:rgba(201,242,77,.22);border-radius:var(--r-input);padding:12px 14px}
.form-msg.is-on{display:block}
.consult-side li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(15,26,23,.08)}
.consult-side li:first-child{padding-top:0}
.consult-side b{font-family:var(--font-num);font-weight:800;color:var(--c-primary);font-size:14px;min-width:58px}
.consult-side span{font-size:14.5px;color:#31423D;line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--c-bg);padding:72px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--c-bg);font-weight:700;font-size:16px}
.foot-desc{font-size:14px;line-height:1.85;color:rgba(245,243,238,.62);margin-bottom:18px;max-width:320px}
.foot-contact{font-size:13.5px;color:rgba(245,243,238,.62);line-height:1.9}
.site-footer h4{font-size:14px;font-weight:700;color:var(--c-bg);margin-bottom:16px;letter-spacing:.04em}
.foot-links li{margin-bottom:11px}
.foot-links a{font-size:14px;color:rgba(245,243,238,.62)}
.foot-links a:hover{color:var(--c-accent)}
.foot-bar{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(245,243,238,.12);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:rgba(245,243,238,.5);
}
.to-top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;
  background:var(--c-ink);color:var(--c-bg);display:grid;place-items:center;z-index:60;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease),transform .24s var(--ease);
  font-family:var(--font-num);font-weight:800;
}
.to-top.is-on{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);background:var(--c-primary)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{padding:0 40px}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:88px}
  .app-sidebar{padding:22px 14px;overflow:visible}
  .brand{justify-content:center;padding:4px 0 20px}
  .brand-name{display:none}
  .side-nav a{justify-content:center;padding:0 8px}
  .nav-text{display:none}
  .side-nav a:hover .nav-text,.side-nav a:focus-visible .nav-text{
    display:flex;align-items:center;position:absolute;left:calc(100% + 0px);top:0;bottom:0;
    padding:0 18px;background:var(--c-ink);white-space:nowrap;border-radius:0 10px 10px 0;
    border-left:3px solid var(--c-accent);z-index:5;
  }
  .side-div{margin:14px 8px}
  .side-note{display:none}
  .side-cta{font-size:0;padding:13px 0}
  .side-cta::after{content:"咨询";font-size:13px}
  .hero-grid{gap:36px}
  .tier-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .tier-card:nth-child(2),.tier-card:nth-child(4){transform:none}
  .cap-grid,.consult-grid{gap:36px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .app-sidebar{transform:translateX(-100%);width:min(84vw,320px)}
  .app-sidebar.is-open{transform:none}
  .topbar{display:flex}
  .site-main{margin-left:0;padding-top:60px}
  .hero{padding-top:56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{font-size:18px}
  .ticker{margin-top:48px}
  .sec{padding:56px 0}
  .cap-grid,.consult-grid{grid-template-columns:1fr;gap:32px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .flow-step:nth-child(2)::after{display:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card.is-featured{grid-column:span 2}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .limited-inner{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .cmp-tip{display:none}
  .cmp-wrap::after{
    content:"";position:absolute;top:0;right:0;bottom:0;width:36px;pointer-events:none;
    background:linear-gradient(90deg,rgba(255,255,255,0),rgba(15,26,23,.10));
    border-radius:0 var(--r-card) var(--r-card) 0;
  }
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero{padding-top:44px}
  .hero-trust{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-trust li+li::before{display:none}
  .hero-actions .btn{width:100%}
  .tier-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr;border-bottom:0}
  .metric{border-left:0;border-bottom:1px solid var(--c-line);padding:18px 0}
  .metric:last-child{border-bottom:0}
  .news-grid{grid-template-columns:1fr}
  .news-card.is-featured{grid-column:span 1}
  .flow-grid{grid-template-columns:1fr;gap:28px}
  .flow-step{padding:0}
  .flow-step::after{display:none}
  .consult-card{padding:22px}
  .c-form{grid-template-columns:1fr}
  .faq-a{padding-right:0}
  .faq-q{font-size:15.5px;gap:14px}
  .foot-grid{grid-template-columns:1fr}
  .cd-cell{min-width:64px;padding:12px 12px}
  .cd-num{font-size:24px}
  .sec-head{gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  .ticker-track{animation:none}
}

/* roulang page: article */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --radius-card:16px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(15,26,23,.05), 0 12px 32px -18px rgba(15,26,23,.18);
  --shadow-card-hover:0 18px 44px -22px rgba(15,26,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:232px;
  --top-h:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;background:var(--c-surface-2);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{list-style:none;padding:0;}
::selection{background:var(--c-accent);color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.num,.en,.sec-index,.tier-num{font-family:Inter,"Space Grotesk","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:var(--c-line);border-radius:8px;}
::-webkit-scrollbar-thumb{background:var(--c-primary);border-radius:8px;}

/* 侧栏导航 */
.side-nav-wrap{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--c-ink);color:var(--c-bg);
  display:flex;flex-direction:column;gap:8px;
  padding:26px 18px 22px;z-index:70;
  transition:width .28s var(--ease),padding .28s var(--ease);
}
.side-logo{
  display:flex;align-items:center;gap:10px;
  padding:4px 6px 20px;
  border-bottom:1px solid rgba(245,243,238,.12);
  margin-bottom:14px;
}
.brand-mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:6px;
  background:var(--c-accent);color:var(--c-ink);
  font-size:14px;font-weight:800;line-height:24px;text-align:center;
}
.logo-text{font-size:15px;font-weight:800;letter-spacing:.02em;line-height:1.35;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  color:rgba(245,243,238,.74);font-size:14.5px;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--c-accent);border-radius:3px;
  transition:height .24s var(--ease);
}
.side-nav a:hover{background:rgba(245,243,238,.06);color:#fff;}
.side-nav a:hover::before{height:20px;}
.side-nav a.is-active{background:rgba(201,242,77,.10);color:var(--c-accent);font-weight:700;}
.side-nav a.is-active::before{height:22px;}
.nav-dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:rgba(245,243,238,.35);}
.side-nav a.is-active .nav-dot{background:var(--c-accent);}
.nav-divider{height:1px;background:rgba(245,243,238,.12);margin:14px 4px;}
.nav-cta{
  margin-top:auto;display:block;text-align:center;
  background:var(--c-accent);color:var(--c-ink);
  font-weight:700;font-size:14px;padding:13px 10px;border-radius:var(--radius-btn);
  transition:transform .2s var(--ease),filter .2s var(--ease);
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-2px);}
.nav-cta:active{transform:scale(.98);}

.main-area{margin-left:var(--side-w);min-height:100vh;}

/* 移动端顶栏与抽屉 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;top:0;height:var(--top-h);
  background:var(--c-ink);color:var(--c-bg);z-index:80;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:800;}
.hamburger{
  width:44px;height:44px;border:0;background:transparent;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  cursor:pointer;border-radius:10px;
}
.hamburger span{display:block;width:20px;height:2px;background:var(--c-bg);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  position:fixed;left:0;top:0;height:100vh;width:min(84vw,320px);
  background:var(--c-ink);color:var(--c-bg);z-index:95;
  transform:translateX(-101%);transition:transform .28s var(--ease);
  padding:22px 18px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,26,23,.55);z-index:90;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* 通用容器与板块 */
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section+.section{border-top:1px solid var(--c-line);}
.section-heading{display:flex;align-items:flex-end;gap:16px;margin-bottom:30px;flex-wrap:wrap;}
.sec-index{font-size:56px;font-weight:900;line-height:.8;color:var(--c-accent);letter-spacing:-.03em;}
.sec-rule{width:40px;height:1px;background:var(--c-line);margin-bottom:13px;}
.sec-label{font-size:13px;letter-spacing:.18em;color:var(--c-muted);margin-bottom:6px;}
.sec-title{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.25;}

/* 面包屑 */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-muted);padding:26px 0 0;
}
.breadcrumb a{color:var(--c-muted);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{color:var(--c-ink);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头部 */
.article-head{padding:24px 0 56px;border-bottom:1px solid var(--c-line);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:6px;font-size:13px;
  background:rgba(22,69,60,.08);color:var(--c-primary);font-weight:600;
}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted);}
.badge-flash{background:var(--c-accent-2);color:#fff;}
.article-title{
  font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;margin:16px 0 18px;max-width:900px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--c-muted);}
.article-meta .dot{width:1px;height:12px;background:var(--c-line);}
.article-cover{margin-top:32px;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--c-line);}
.article-cover img{width:100%;aspect-ratio:16/9;}

/* 文章布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px);
  justify-content:center;gap:56px;
  padding:56px 0 80px;
}
.article-body{min-width:0;}
.article-body h2{
  font-size:clamp(21px,2.4vw,30px);font-weight:800;line-height:1.3;
  margin:48px 0 16px;scroll-margin-top:80px;
}
.article-body h2::after{content:"";display:block;width:40px;height:3px;background:var(--c-accent);margin-top:12px;border-radius:3px;}
.article-body h3{font-size:22px;font-weight:700;line-height:1.4;margin:36px 0 12px;scroll-margin-top:80px;}
.article-body h4{font-size:18px;font-weight:700;margin:28px 0 10px;}
.article-body p{font-size:17px;line-height:1.85;margin:0 0 20px;color:#16211D;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body li{position:relative;padding-left:22px;margin-bottom:9px;font-size:16.5px;line-height:1.8;}
.article-body ul>li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--c-primary);border-radius:1px;}
.article-body ol{counter-reset:olc;}
.article-body ol>li{counter-increment:olc;}
.article-body ol>li::before{
  content:counter(olc);position:absolute;left:0;top:2px;
  font-family:Inter,Arial,sans-serif;font-weight:800;font-size:14px;color:var(--c-primary);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:rgba(201,242,77,.08);
  border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;
  color:#22302B;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(22,69,60,.4);transition:color .2s var(--ease),border-color .2s var(--ease);}
.article-body a:hover{color:var(--c-accent-2);border-color:var(--c-accent-2);}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--c-surface-2);font-weight:700;}
.article-body pre{
  background:var(--c-ink);color:#E8EDEA;border-radius:12px;
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:14px;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}
.article-empty{
  border:1px dashed var(--c-line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;background:var(--c-surface);
}
.article-empty h2{font-size:22px;font-weight:800;margin-bottom:10px;}
.article-empty p{color:var(--c-muted);margin-bottom:20px;}

/* 右侧目录 */
.toc-col{display:none;}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 200px;justify-content:initial;}
  .toc-col{display:block;}
}
.toc{
  position:sticky;top:32px;border-left:1px solid var(--c-line);
  padding-left:18px;max-height:calc(100vh - 80px);overflow-y:auto;
}
.toc h2{font-size:13px;letter-spacing:.16em;color:var(--c-muted);font-weight:600;margin-bottom:12px;}
.toc a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--c-muted);
  padding:6px 0 6px 10px;border-left:2px solid transparent;margin-left:-19px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.toc a:hover{color:var(--c-ink);background:rgba(22,69,60,.05);}
.toc a.is-current{color:var(--c-ink);font-weight:600;border-left-color:var(--c-accent);}

/* 提示条 */
.notice-strip{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:12px;padding:18px 20px;margin:32px 0 8px;
}
.notice-strip .notice-ico{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:rgba(201,242,77,.35);color:var(--c-ink);font-size:13px;font-weight:800;line-height:22px;text-align:center;}
.notice-strip p{font-size:14.5px;line-height:1.75;color:#2A3630;margin:0;}

/* 卡片 */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.card-img{overflow:hidden;}
.card-img img{width:100%;aspect-ratio:16/9;transition:transform .4s var(--ease);}
.card:hover .card-img img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:18px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-text{font-size:14.5px;line-height:1.7;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);margin-top:auto;padding-top:6px;}

/* 上一篇/下一篇 */
.pager{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.pager a{padding:24px 22px;display:flex;flex-direction:column;gap:8px;transition:background .24s var(--ease);}
.pager a+a{border-left:1px solid var(--c-line);text-align:right;align-items:flex-end;}
.pager a:hover{background:var(--c-surface-2);}
.pager .pager-k{font-size:13px;color:var(--c-muted);letter-spacing:.06em;}
.pager .pager-t{font-size:16px;font-weight:700;line-height:1.5;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  padding:14px 28px;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),transform .2s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--c-bg);}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink);}
.btn-primary:hover .btn-arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:rgba(22,69,60,.06);}
.btn:active{transform:scale(.98);}
.btn-arrow{transition:transform .24s var(--ease);font-size:15px;line-height:1;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;}
.text-link .btn-arrow{transition:transform .24s var(--ease);}
.text-link:hover .btn-arrow{transform:translateX(4px);}

/* CTA 条带 */
.cta-band{
  background:var(--c-primary-deep);color:var(--c-bg);
  border-radius:var(--radius-card);
  padding:40px 36px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(245,243,238,.08) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;line-height:1.35;margin-bottom:8px;position:relative;}
.cta-band p{font-size:14.5px;color:rgba(245,243,238,.78);position:relative;margin:0;}
.cta-band .btn{position:relative;background:var(--c-accent);color:var(--c-ink);}
.cta-band .btn:hover{background:#fff;color:var(--c-ink);}

/* 相关内容网格 */
.reco-grid{margin:0 -12px;}
.reco-grid>.cell{padding:0 12px 24px;}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 8px 16px 0;font-size:16px;font-weight:600;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--c-accent);border-radius:3px;
  transition:height .24s var(--ease);
}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::before{height:26px;}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--c-line);display:grid;place-items:center;
  font-size:14px;color:var(--c-primary);transition:transform .26s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(90deg);}
.faq-answer{padding:0 40px 22px 0;font-size:15px;line-height:1.8;color:var(--c-muted);}

/* 页脚 */
.site-footer{background:var(--c-primary-deep);color:var(--c-bg);padding:64px 0 28px;margin-top:72px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:14px;}
.foot-desc{font-size:14px;line-height:1.8;color:rgba(245,243,238,.72);max-width:340px;}
.foot-contact{font-size:14px;line-height:1.9;color:rgba(245,243,238,.6);margin-top:14px;}
.site-footer h4{font-size:14px;font-weight:700;letter-spacing:.08em;margin-bottom:16px;color:var(--c-bg);}
.foot-links li{margin-bottom:10px;}
.foot-links a{font-size:14px;color:rgba(245,243,238,.7);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.foot-links a:hover{color:var(--c-accent);padding-left:4px;}
.foot-bar{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(245,243,238,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(245,243,238,.55);
}

/* 回到顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--c-ink);color:var(--c-bg);border:0;cursor:pointer;
  display:grid;place-items:center;font-size:18px;z-index:60;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease),transform .24s var(--ease);
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-3px);}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (max-width:1279px){
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:1024px){
  .main-area{margin-left:var(--side-w);}
}
@media (min-width:1024px) and (max-width:1279px){
  body{padding-left:88px;}
  .side-nav-wrap{width:88px;padding:22px 10px;}
  .side-nav-wrap:hover{width:var(--side-w);padding:26px 18px;box-shadow:0 0 44px rgba(0,0,0,.34);}
  .nav-text,.logo-text{display:none;}
  .side-nav-wrap:hover .nav-text{display:inline;}
  .side-nav-wrap:hover .logo-text{display:inline;}
  .side-logo{justify-content:center;}
  .side-nav-wrap:hover .side-logo{justify-content:flex-start;}
  .side-nav a{justify-content:center;padding:11px 8px;}
  .side-nav-wrap:hover .side-nav a{justify-content:flex-start;padding:11px 12px;}
  .nav-cta{font-size:13px;padding:11px 4px;}
}
@media (max-width:1023px){
  .side-nav-wrap{display:none;}
  .mobile-bar{display:flex;}
  .main-area{margin-left:0;padding-top:var(--top-h);}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  .article-layout{padding:40px 0 60px;}
  .article-title{font-size:clamp(24px,6vw,30px);}
  .article-body p{font-size:16px;}
  .pager{grid-template-columns:1fr;}
  .pager a+a{border-left:0;border-top:1px solid var(--c-line);text-align:left;align-items:flex-start;}
  .cta-band{padding:28px 22px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bar{flex-direction:column;}
  .sec-index{font-size:44px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --r-card:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,26,23,.05), 0 12px 32px -18px rgba(15,26,23,.18);
  --sh-2:0 18px 44px -22px rgba(15,26,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:232px;
}
*,*::before,*::after{box-sizing:border-box}
html{height:100%;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;color:var(--c-ink);background:var(--c-bg);font-weight:400;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.2;letter-spacing:-.01em;color:inherit;}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:var(--c-primary)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;margin:0}
button{border:0;background:none;cursor:pointer}
::selection{background:var(--c-accent);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{padding:0 40px}}

/* ---------- App shell ---------- */
.app-shell{display:flex;min-height:100vh}
.main{margin-left:var(--nav-w);width:calc(100% - var(--nav-w));min-height:100vh;position:relative}
@media (min-width:1024px){
  body{overflow:hidden}
  .main{height:100vh;overflow-y:auto;overflow-x:hidden}
  .main::-webkit-scrollbar{width:8px}
  .main::-webkit-scrollbar-track{background:var(--c-surface-2);border-radius:8px}
  .main::-webkit-scrollbar-thumb{background:#BEB9AC;border-radius:8px}
  .main::-webkit-scrollbar-thumb:hover{background:var(--c-muted)}
}
.nav-wrap{position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);background:var(--c-ink);color:var(--c-bg);display:flex;flex-direction:column;padding:26px 16px 22px;z-index:60}
.nav-brand{display:flex;align-items:center;gap:10px;padding:0 8px 22px;font-size:17px;font-weight:900;color:var(--c-bg);line-height:1.3;letter-spacing:-.01em}
.brand-mark{width:24px;height:24px;flex:none;border-radius:6px;background:var(--c-accent);color:var(--c-ink);display:grid;place-items:center;font-size:14px;font-weight:900;line-height:1}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:18px 0 0;border-top:1px solid rgba(245,243,238,.12)}
.side-nav a{display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;border-radius:10px;color:rgba(245,243,238,.72);font-size:15px;font-weight:500;position:relative;transition:background 200ms var(--ease),color 200ms var(--ease)}
.side-nav a:hover{background:rgba(245,243,238,.06);color:var(--c-bg)}
.side-nav a.is-active{background:rgba(201,242,77,.10);color:var(--c-bg);font-weight:700}
.nav-dot{width:3px;height:16px;border-radius:2px;background:transparent;flex:none}
.side-nav a.is-active .nav-dot{background:var(--c-accent)}
.nav-foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(245,243,238,.12)}
.nav-cta .cta-short{display:none}
.topbar{display:none}
.drawer-mask{display:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:background 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease)}
.btn:active{transform:scale(.98)}
.btn .btn-arrow{transition:transform 240ms var(--ease);font-size:15px}
.btn:hover .btn-arrow{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:var(--c-bg)}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink)}
.btn-accent{background:var(--c-accent);color:var(--c-ink)}
.btn-accent:hover{background:var(--c-bg);color:var(--c-ink)}
.btn-ghost{background:transparent;border-color:rgba(245,243,238,.35);color:var(--c-bg)}
.btn-ghost:hover{background:rgba(245,243,238,.08);border-color:rgba(245,243,238,.6);color:var(--c-bg)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(22,69,60,.06)}
.btn-block{width:100%}

/* ---------- Typography signature ---------- */
.kicker{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.kicker-num{font-family:"Inter","Space Grotesk",sans-serif;font-weight:900;font-size:56px;line-height:.9;color:var(--c-accent);letter-spacing:-.03em}
.kicker-line{width:40px;height:1px;background:rgba(245,243,238,.35)}
.kicker-label{font-size:13px;letter-spacing:.18em;color:rgba(245,243,238,.6);text-transform:uppercase}
.kicker.on-light .kicker-num{color:rgba(15,26,23,.14)}
.kicker.on-light .kicker-line{background:var(--c-line)}
.kicker.on-light .kicker-label{color:var(--c-muted)}

/* ---------- Hero ---------- */
.cat-hero{position:relative;background:var(--c-ink);color:var(--c-bg);display:flex;flex-direction:column;justify-content:center;padding-top:52px;overflow:hidden}
.cat-hero .container{position:relative;z-index:2;padding-bottom:52px}
.hero-copy h1{font-size:clamp(32px,4.4vw,56px);font-weight:900;line-height:1.06;letter-spacing:-.02em;color:var(--c-bg);margin-bottom:20px}
.hero-sub{font-size:20px;line-height:1.7;color:rgba(245,243,238,.8);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;font-size:13px;color:rgba(245,243,238,.62)}
.hero-points li{position:relative;padding-left:14px}
.hero-points li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:rgba(245,243,238,.4)}
.hero-media{margin-top:28px}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;border:1px solid rgba(245,243,238,.14);background:var(--c-surface-2)}
.ticker{height:40px;border-top:1px solid rgba(245,243,238,.12);background:rgba(245,243,238,.03);overflow:hidden;display:flex;align-items:center;position:relative;z-index:2}
.ticker-track{display:flex;gap:56px;white-space:nowrap;padding-left:24px;font-size:13px;color:rgba(245,243,238,.62);animation:tickmove 32s linear infinite}
@keyframes tickmove{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--c-line);background:var(--c-surface)}
.breadcrumb{padding:16px 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--c-line)}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current]{color:var(--c-ink)}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{font-size:clamp(24px,3vw,40px);font-weight:800;line-height:1.2;margin-bottom:16px}
.section-sub{font-size:17px;color:var(--c-muted);line-height:1.8}

/* ---------- Zigzag ---------- */
.zig-row{margin-bottom:56px;align-items:center}
.zig-row:last-child{margin-bottom:0}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--c-line);background:var(--c-surface-2)}
.zig-copy{padding-top:22px}
.zig-copy h3{font-size:23px;font-weight:800;line-height:1.3;margin:16px 0 14px}
.zig-copy p{color:var(--c-muted);font-size:16px;line-height:1.8}
@media (min-width:1024px){
  .zig-copy{padding-top:0;padding-left:12px}
  .zig-row:nth-child(even) .zig-media{order:2}
  .zig-row:nth-child(even) .zig-copy{order:1;padding-left:0;padding-right:12px}
}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;font-size:13px;font-weight:600;background:rgba(22,69,60,.08);color:var(--c-primary)}
.badge--line{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}
.badge--promo{background:var(--c-accent-2);color:#fff}
.tick-list{margin-top:18px}
.tick-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:15px;color:var(--c-ink);line-height:1.7}
.tick-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--c-primary)}

/* ---------- Checklist ---------- */
.check-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);margin-top:28px}
.check-panel h3{font-size:16px;font-weight:700;margin-bottom:14px}
.stat-line{display:flex;align-items:baseline;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--c-line)}
.stat-line:last-child{border-bottom:0}
.stat-line span{font-size:13px;color:var(--c-muted)}
.stat-line strong{font-family:"Inter",sans-serif;font-weight:800;font-size:17px;color:var(--c-primary)}
.stat-ok{color:#2F7A55;font-family:"Inter",sans-serif;font-weight:800;font-size:17px}
.list-block{border-top:1px solid var(--c-line)}
.list-item{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;padding:14px 4px;border-bottom:1px solid var(--c-line);transition:background 220ms var(--ease)}
.list-item:hover{background:var(--c-surface-2)}
.list-item h3{font-size:17px;font-weight:700;margin-bottom:4px}
.list-item p{font-size:14px;color:var(--c-muted);line-height:1.6;margin:0;max-width:520px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--c-line);max-width:900px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;min-height:64px;padding:14px 4px 14px 16px;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);position:relative;transition:color 220ms var(--ease)}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:transparent;border-radius:2px;transition:background 220ms var(--ease)}
.faq-icon{flex:none;width:26px;height:26px;border-radius:8px;border:1px solid var(--c-line);display:grid;place-items:center;font-size:16px;line-height:1;color:var(--c-muted);transition:transform 280ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .faq-q::before{background:var(--c-accent)}
.faq-item.is-open .faq-icon{transform:rotate(90deg);color:var(--c-primary);border-color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a p{padding:0 4px 22px 16px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:780px}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 96px}
.cta-inner{background:var(--c-primary-deep);color:var(--c-bg);border-radius:24px;padding:48px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-size:clamp(22px,2.4vw,32px);font-weight:800;color:var(--c-bg);margin-bottom:10px}
.cta-inner p{font-size:15px;color:rgba(245,243,238,.72);max-width:520px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(245,243,238,.72);padding:72px 0 32px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(245,243,238,.12)}
.foot-brand{display:flex;align-items:center;gap:10px;color:var(--c-bg);font-size:17px;font-weight:900;margin-bottom:16px}
.foot-desc{font-size:14px;line-height:1.85;color:rgba(245,243,238,.66);max-width:340px;margin-bottom:16px}
.foot-contact{font-size:13px;line-height:1.9;color:rgba(245,243,238,.55);margin:0}
.site-footer h4{font-size:14px;font-weight:700;color:var(--c-bg);margin-bottom:16px;letter-spacing:.04em}
.foot-links li{margin-bottom:10px}
.foot-links a{color:rgba(245,243,238,.66);font-size:14px}
.foot-links a:hover{color:var(--c-accent)}
.foot-bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;font-size:13px;color:rgba(245,243,238,.5)}

/* ---------- To top ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--c-ink);color:var(--c-bg);display:grid;place-items:center;font-size:18px;opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease),background 240ms var(--ease);z-index:70}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:var(--c-primary);color:var(--c-accent)}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 620ms var(--ease),transform 620ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px}
  .nav-wrap{padding:24px 10px 20px}
  .nav-brand{justify-content:center;padding:0 0 20px}
  .nav-brand .brand-name{display:none}
  .side-nav a{justify-content:center;padding:0}
  .side-nav a .nav-text{position:absolute;left:calc(100% + 14px);top:50%;transform:translateY(-50%);background:var(--c-ink);border:1px solid rgba(245,243,238,.16);padding:7px 12px;border-radius:8px;white-space:nowrap;font-size:14px;opacity:0;pointer-events:none;transition:opacity 180ms var(--ease);z-index:80}
  .side-nav a:hover .nav-text,.side-nav a:focus-visible .nav-text{opacity:1}
  .nav-cta .cta-full{display:none}
  .nav-cta .cta-short{display:inline}
  .nav-cta{padding:14px 4px;font-size:13px}
}
@media (max-width:1023px){
  .nav-wrap{transform:translateX(-100%);transition:transform 280ms var(--ease);width:min(84vw,320px);box-shadow:0 24px 60px -20px rgba(15,26,23,.5)}
  .nav-wrap.is-open{transform:none}
  .topbar{display:flex;position:fixed;top:0;left:0;right:0;height:60px;background:var(--c-ink);color:var(--c-bg);align-items:center;gap:12px;padding:0 14px;z-index:65}
  .hamburger{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 10px;border-radius:10px}
  .hamburger span{display:block;height:2px;border-radius:2px;background:var(--c-bg);transition:transform 220ms var(--ease),opacity 220ms var(--ease)}
  .hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
  .hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .topbar-brand{display:flex;align-items:center;gap:9px;color:var(--c-bg);font-size:16px;font-weight:900}
  .main{margin-left:0;width:100%;padding-top:60px;height:auto;overflow:visible}
  .drawer-mask{display:block;position:fixed;inset:0;background:rgba(15,26,23,.55);opacity:0;visibility:hidden;transition:opacity 280ms var(--ease),visibility 280ms var(--ease);z-index:58}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  body.drawer-open{overflow:hidden}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .cta-band{padding-bottom:56px}
  .cta-inner{padding:32px 24px;border-radius:20px}
  .kicker-num{font-size:44px}
}
@media (max-width:767px){
  .hero-sub{font-size:17px}
  .hero-actions .btn{flex:1 1 100%}
  .zig-copy h3{font-size:20px}
  .section-head{margin-bottom:36px}
  .list-item{flex-direction:column;align-items:flex-start;gap:8px}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .cta-actions .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .ticker-track{animation:none}
  *{scroll-behavior:auto!important}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --r-btn:999px;
  --r-card:16px;
  --r-input:10px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(15,26,23,.05),0 12px 32px -18px rgba(15,26,23,.18);
  --shadow-2:0 18px 44px -22px rgba(15,26,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:232px;
  --font-cn:'Noto Sans SC',"PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:'Inter','Noto Sans SC',sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-accent-2);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:var(--c-accent);color:var(--c-ink);}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:var(--c-line);border-radius:8px;}
::-webkit-scrollbar-thumb{background:var(--c-primary);border-radius:8px;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 左侧 App Shell ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--c-ink);color:var(--c-bg);
  display:flex;flex-direction:column;gap:6px;
  padding:28px 18px 24px;z-index:60;
  border-right:1px solid rgba(245,243,238,.10);
}
.nav-brand{
  display:flex;align-items:center;gap:10px;
  padding:0 8px 22px;margin-bottom:10px;
  border-bottom:1px solid rgba(245,243,238,.12);
}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:6px;
  background:var(--c-accent);color:var(--c-ink);
  font-size:14px;font-weight:900;line-height:26px;text-align:center;
}
.brand-text{font-size:15px;font-weight:700;color:var(--c-bg);letter-spacing:.02em;}
.nav-links{display:flex;flex-direction:column;gap:4px;flex:1;}
.side-nav a{
  display:flex;align-items:center;gap:12px;
  min-height:46px;padding:10px 12px;border-radius:10px;
  color:rgba(245,243,238,.78);font-size:15px;font-weight:500;
  position:relative;transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-nav a:hover{background:rgba(255,255,255,.06);color:var(--c-bg);}
.nav-dot{
  width:6px;height:6px;flex:0 0 6px;border-radius:2px;
  background:rgba(245,243,238,.35);transition:background 200ms var(--ease);
}
.side-nav a.is-active{
  background:rgba(201,242,77,.10);color:var(--c-bg);font-weight:700;
}
.side-nav a.is-active::before{
  content:"";position:absolute;left:-18px;top:10px;bottom:10px;width:3px;
  background:var(--c-accent);border-radius:0 3px 3px 0;
}
.side-nav a.is-active .nav-dot{background:var(--c-accent);}
.nav-sep{height:1px;background:rgba(245,243,238,.12);margin:14px 4px;}
.nav-consult{
  display:flex;align-items:center;justify-content:center;
  min-height:46px;border-radius:var(--r-btn);
  background:var(--c-accent);color:var(--c-ink)!important;
  font-size:15px;font-weight:700;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.nav-consult:hover{transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(201,242,77,.7);}

/* ============ 主内容外壳 ============ */
.shell{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{display:none;}
.drawer,.mask{display:none;}
@media (max-width:1023px){
  .side-nav{display:none;}
  .shell{margin-left:0;}
  .topbar{
    display:flex;position:sticky;top:0;z-index:50;
    height:60px;align-items:center;justify-content:space-between;
    padding:0 18px;background:var(--c-ink);color:var(--c-bg);
    border-bottom:1px solid rgba(245,243,238,.12);
  }
  .topbar .brand-text{font-size:15px;font-weight:700;}
  .topbar-left{display:flex;align-items:center;gap:10px;}
  .burger{
    width:44px;height:44px;display:flex;flex-direction:column;
    align-items:center;justify-content:center;gap:5px;
    background:none;border:0;cursor:pointer;
  }
  .burger span{display:block;width:20px;height:2px;background:var(--c-bg);border-radius:2px;}
  .drawer{
    display:block;position:fixed;top:0;left:0;bottom:0;
    width:min(84vw,320px);background:var(--c-ink);color:var(--c-bg);
    padding:24px 18px;overflow-y:auto;z-index:80;
    transform:translateX(-100%);transition:transform 280ms var(--ease);
    display:flex;flex-direction:column;gap:6px;
  }
  .drawer.is-open{transform:translateX(0);}
  .mask{
    display:block;position:fixed;inset:0;z-index:70;
    background:rgba(15,26,23,.55);opacity:0;visibility:hidden;
    transition:opacity 280ms var(--ease),visibility 280ms var(--ease);
  }
  .mask.is-open{opacity:1;visibility:visible;}
}
.drawer-brand{
  display:flex;align-items:center;gap:10px;
  padding:0 4px 18px;margin-bottom:12px;
  border-bottom:1px solid rgba(245,243,238,.12);
}
.drawer .nav-links{flex:1;}

/* ============ 强排版签名 ============ */
.section-sign{display:flex;align-items:center;gap:16px;margin-bottom:20px;}
.sign-num{
  font-family:var(--font-num);font-weight:900;font-size:clamp(40px,5vw,64px);
  line-height:1;color:rgba(15,26,23,.12);letter-spacing:-.02em;
}
.sign-line{width:40px;height:1px;background:var(--c-line);flex:0 0 40px;}
.sign-label{font-size:13px;letter-spacing:.18em;color:var(--c-muted);}
.on-dark .sign-num{color:rgba(201,242,77,.35);}
.on-dark .sign-line{background:rgba(245,243,238,.28);}
.on-dark .sign-label{color:rgba(245,243,238,.65);}

/* ============ Hero ============ */
.cat-hero{
  background:var(--c-ink);color:var(--c-bg);
  padding:56px 0 60px;position:relative;overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border:1px solid rgba(245,243,238,.10);border-radius:24px;transform:rotate(12deg);
  pointer-events:none;
}
.hero-grid{display:flex;flex-wrap:wrap;gap:40px;align-items:center;}
.hero-copy{flex:1 1 460px;min-width:0;}
.hero-media{flex:0 1 360px;min-width:260px;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  border:1px solid rgba(245,243,238,.14);
}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,56px);font-weight:900;line-height:1.08;
  letter-spacing:-.02em;color:var(--c-bg);margin-bottom:18px;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,20px);line-height:1.7;
  color:rgba(245,243,238,.80);max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:18px;
  font-size:13px;color:rgba(245,243,238,.62);
}
.hero-trust span{position:relative;padding-left:14px;}
.hero-trust span::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:12px;background:rgba(245,243,238,.35);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background 240ms var(--ease),color 240ms var(--ease),
             transform 240ms var(--ease),border-color 240ms var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--c-primary);color:var(--c-bg);}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink);}
.btn-accent{background:var(--c-accent);color:var(--c-ink);}
.btn-accent:hover{background:var(--c-bg);color:var(--c-ink);}
.btn-ghost{
  background:transparent;color:var(--c-bg);
  border-color:rgba(245,243,238,.35);
}
.btn-ghost:hover{background:rgba(245,243,238,.08);color:var(--c-bg);}
.btn-outline{
  background:transparent;color:var(--c-primary);border-color:var(--c-primary);
}
.btn-outline:hover{background:rgba(22,69,60,.06);color:var(--c-primary);}
.btn .arrow{transition:transform 240ms var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.link-arrow .arrow{transition:transform 240ms var(--ease);}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-muted);padding-top:22px;padding-bottom:0;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{color:var(--c-ink);font-weight:500;}

/* ============ 通用区块 ============ */
.section{padding:72px 0;}
.section + .section{border-top:1px solid var(--c-line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3vw,38px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;margin-bottom:16px;
}
.section-lead{color:var(--c-muted);font-size:16px;line-height:1.8;}
.on-dark{background:var(--c-ink);color:var(--c-bg);}
.on-dark .section-lead{color:rgba(245,243,238,.72);}
.on-dark h2{color:var(--c-bg);}

/* ============ 要点清单 ============ */
.check-list{display:flex;flex-direction:column;border-top:1px solid var(--c-line);}
.check-item{
  display:flex;gap:24px;padding:26px 4px;
  border-bottom:1px solid var(--c-line);
  transition:background 240ms var(--ease),padding-left 240ms var(--ease);
}
.check-item:hover{background:var(--c-surface-2);padding-left:16px;}
.check-num{
  font-family:var(--font-num);font-weight:900;font-size:22px;
  color:var(--c-primary);flex:0 0 48px;line-height:1.4;
}
.check-body h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.check-body p{color:var(--c-muted);font-size:15px;line-height:1.8;}
.check-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-badge);font-size:13px;line-height:1;
  background:rgba(22,69,60,.08);color:var(--c-primary);
}
.badge-promo{background:var(--c-accent-2);color:#fff;}
.badge-line{background:transparent;border:1px solid var(--c-line);color:var(--c-muted);}

/* ============ 数据指标带 ============ */
.metrics{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:0;}
.metric-row{display:flex;flex-wrap:wrap;}
.metric{
  flex:1 1 220px;min-width:0;padding:40px 24px;
  border-right:1px solid var(--c-line);
}
.metric:last-child{border-right:0;}
.metric-num{
  font-family:var(--font-num);font-weight:900;line-height:1;
  font-size:clamp(40px,5vw,64px);color:var(--c-primary);letter-spacing:-.03em;
  display:inline-block;
}
.metric-unit{
  font-size:14px;font-weight:600;color:var(--c-muted);margin-left:6px;
}
.metric p{font-size:13px;color:var(--c-muted);margin-top:12px;line-height:1.6;}

/* ============ 卡片区 ============ */
.card-grid{display:flex;flex-wrap:wrap;gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;gap:14px;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.card-feature{flex:2 1 420px;}
.card-small{flex:1 1 260px;}
.card h3{font-size:20px;font-weight:700;line-height:1.4;}
.card p{font-size:15px;color:var(--c-muted);line-height:1.8;}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;background:var(--c-surface-2);}
.card-tight{padding:22px;gap:10px;}
.card-tight h3{font-size:17px;}
.card-tight p{font-size:14px;}

/* ============ 列表行 ============ */
.row-list{border-top:1px solid var(--c-line);}
.row-list li{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;min-height:72px;padding:16px 8px;
  border-bottom:1px solid var(--c-line);
  transition:background 200ms var(--ease);
}
.row-list li:hover{background:var(--c-surface-2);}
.row-title{font-size:17px;font-weight:600;}
.row-title small{display:block;font-size:13px;font-weight:400;color:var(--c-muted);margin-top:4px;}
.row-action{
  font-size:13px;color:var(--c-primary);font-weight:600;
  border:1px solid var(--c-line);border-radius:var(--r-badge);
  padding:5px 10px;background:var(--c-surface);
}

/* ============ 限时条带 ============ */
.cta-band{
  background:var(--c-primary-deep);color:var(--c-bg);
  padding:52px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(245,243,238,.08) 0 1px,transparent 1px 14px);
  opacity:.5;pointer-events:none;
}
.cta-inner{
  position:relative;display:flex;flex-wrap:wrap;gap:28px;
  align-items:center;justify-content:space-between;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3;margin-bottom:10px;}
.cta-inner p{color:rgba(245,243,238,.72);font-size:15px;max-width:560px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;background:none;border:0;padding:0 4px 0 0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--c-ink);text-align:left;line-height:1.5;
  position:relative;transition:color 240ms var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:-14px;top:50%;width:3px;height:22px;
  background:var(--c-accent);border-radius:2px;
  transform:translateY(-50%) scaleY(0);transform-origin:center;
  transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-item.is-open .faq-q::before{transform:translateY(-50%) scaleY(1);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform 240ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:1.5px;}
.faq-icon::after{left:10px;top:0;width:1.5px;height:22px;}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 300ms var(--ease);
}
.faq-a-inner{padding:4px 40px 24px 0;font-size:15px;line-height:1.85;color:var(--c-muted);}

/* ============ 表单 ============ */
.consult-grid{display:flex;flex-wrap:wrap;gap:48px;}
.consult-intro{flex:1 1 320px;}
.consult-form{flex:1 1 480px;}
.field{margin-bottom:20px;}
.field label{
  display:block;font-size:13px;color:var(--c-muted);margin-bottom:8px;
}
.field input,.field select,.field textarea{
  width:100%;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-input);
  padding:13px 14px;font-size:15px;color:var(--c-ink);
  font-family:inherit;line-height:1.6;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  -webkit-appearance:none;appearance:none;
}
.field textarea{min-height:120px;resize:vertical;}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--c-muted) 50%),
                   linear-gradient(135deg,var(--c-muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,69,60,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--c-accent-2);}
.field-error{font-size:13px;color:var(--c-accent-2);margin-top:6px;display:none;}
.field.has-error .field-error{display:block;}
.form-submit{width:100%;justify-content:center;}
.form-note{font-size:13px;color:var(--c-muted);margin-top:14px;}
.form-tip{
  display:none;margin-top:16px;padding:14px 16px;border-radius:10px;
  background:rgba(201,242,77,.18);color:var(--c-primary);
  font-size:14px;border:1px solid rgba(22,69,60,.16);
}
.form-tip.is-visible{display:block;}
.info-list{margin-top:28px;border-top:1px solid var(--c-line);}
.info-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:14px 0;border-bottom:1px solid var(--c-line);
  font-size:14px;color:var(--c-muted);
}
.info-list li strong{color:var(--c-ink);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);color:rgba(245,243,238,.72);
  padding:64px 0 32px;margin-top:auto;
}
.foot-grid{display:flex;flex-wrap:wrap;gap:40px;}
.foot-grid > div{flex:1 1 200px;min-width:0;}
.foot-grid > div:first-child{flex:1 1 300px;}
.foot-brand{
  display:flex;align-items:center;gap:10px;
  color:var(--c-bg);font-size:17px;font-weight:700;margin-bottom:16px;
}
.foot-desc{font-size:14px;line-height:1.85;margin-bottom:14px;}
.foot-contact{font-size:13px;line-height:1.9;color:rgba(245,243,238,.6);}
.site-footer h4{
  color:var(--c-bg);font-size:15px;font-weight:700;margin-bottom:16px;
}
.foot-links li{margin-bottom:10px;}
.foot-links a{color:rgba(245,243,238,.72);font-size:14px;}
.foot-links a:hover{color:var(--c-accent);}
.foot-bar{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(245,243,238,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(245,243,238,.55);
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;
  border-radius:50%;background:var(--c-ink);color:var(--c-bg);
  border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
  z-index:65;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);}
.to-top svg{width:18px;height:18px;}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 620ms var(--ease),transform 620ms var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{padding:0 40px;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px;}
  .side-nav{width:88px;padding:24px 12px;}
  .nav-brand{justify-content:center;padding:0 0 18px;}
  .nav-brand .brand-text{display:none;}
  .side-nav a{justify-content:center;padding:10px;gap:0;}
  .side-nav a .nav-text{display:none;}
  .side-nav a:hover .nav-text,
  .side-nav a:focus-visible .nav-text{
    display:block;position:absolute;left:56px;top:50%;transform:translateY(-50%);
    background:var(--c-primary-deep);color:var(--c-bg);
    padding:8px 14px;border-radius:8px;white-space:nowrap;
    box-shadow:var(--shadow-2);z-index:10;
  }
  .nav-consult{font-size:0;padding:0;}
  .nav-consult::after{content:"咨询";font-size:14px;font-weight:700;}
}
@media (max-width:1023px){
  .section{padding:56px 0;}
  .cat-hero{padding:40px 0 44px;}
  .hero-grid{gap:28px;}
  .hero-media{flex:1 1 100%;order:-1;}
  .hero-media img{aspect-ratio:16/9;border-radius:16px;}
  .metric{border-right:0;border-bottom:1px solid var(--c-line);}
  .metric:last-child{border-bottom:0;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .section{padding:48px 0;}
  .container{padding:0 20px;}
  .card{padding:20px;}
  .check-item{gap:16px;padding:22px 0;}
  .check-num{flex:0 0 36px;font-size:19px;}
  .consult-grid{gap:32px;}
  .foot-grid{gap:28px;}
  .foot-bar{flex-direction:column;}
  .cta-inner{gap:20px;}
}
@media (max-width:519px){
  .hero-actions .btn{width:100%;justify-content:center;}
  .section-head h2{font-size:22px;}
  .row-title{font-size:16px;}
  .faq-q{font-size:16px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1!important;transform:none!important;}
  .card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --r-card:16px;
  --r-btn:999px;
  --r-input:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(15,26,23,.05),0 12px 32px -18px rgba(15,26,23,.18);
  --sh-2:0 18px 44px -22px rgba(15,26,23,.28);
  --nav-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol,li{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:var(--c-accent);color:var(--c-ink)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--c-line);border-radius:8px}
::-webkit-scrollbar-thumb{background:var(--c-muted);border-radius:8px}
.num,.sec-num,.eyebrow-num,.rate-val,.tl-step,.to-top{font-family:"Inter","Space Grotesk",system-ui,sans-serif}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-accent);color:var(--c-ink);
  padding:10px 18px;border-radius:0 0 10px 0;font-weight:700;
}
.skip-link:focus{left:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 左侧导航（App Shell） ============ */
.shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--c-ink);color:var(--c-bg);
  z-index:70;display:flex;flex-direction:column;gap:22px;
  padding:26px 18px 22px;overflow-y:auto;overflow-x:hidden;
  transition:width .28s var(--ease);
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--c-bg);font-weight:800;font-size:16px;line-height:1.3;
  padding:2px 6px;
}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:6px;
  background:var(--c-accent);color:var(--c-ink);
  display:grid;place-items:center;font-size:14px;font-weight:900;
}
.brand-text{white-space:nowrap}
.side-nav{display:flex;flex-direction:column;gap:2px;flex:1 1 auto;padding-top:6px;border-top:1px solid rgba(245,243,238,.12)}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:12px 12px 12px 14px;border-radius:10px;
  color:rgba(245,243,238,.72);font-size:15px;font-weight:500;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.side-nav a:hover{background:rgba(201,242,77,.06);color:var(--c-bg)}
.side-nav a:hover::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;
  background:var(--c-accent);border-radius:2px;
}
.side-nav a.is-active{background:rgba(201,242,77,.10);color:var(--c-bg);font-weight:700}
.side-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.nav-dot{
  width:7px;height:7px;flex:0 0 7px;border-radius:50%;
  border:1px solid rgba(245,243,238,.45);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.side-nav a.is-active .nav-dot{background:var(--c-accent);border-color:var(--c-accent)}
.nav-text{white-space:nowrap}
.nav-cta{
  display:block;width:100%;text-align:center;padding:13px 16px;border-radius:999px;
  background:var(--c-accent);color:var(--c-ink);font-weight:700;font-size:15px;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.nav-cta:hover{background:#d9ff6a}
.nav-cta:active{transform:scale(.98)}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;
  background:var(--c-ink);color:var(--c-bg);align-items:center;justify-content:space-between;
  padding:0 14px;z-index:80;
}
.topbar .brand{padding:0;font-size:15px}
.burger{
  width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;
  background:transparent;border:0;cursor:pointer;padding:10px;border-radius:10px;
}
.burger span{display:block;height:2px;background:var(--c-bg);border-radius:2px;transition:transform .28s var(--ease),opacity .28s var(--ease)}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,320px);
  background:var(--c-ink);color:var(--c-bg);z-index:95;
  transform:translateX(-102%);transition:transform .28s var(--ease);
  padding:22px 16px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer .drawer-close{
  align-self:flex-end;width:44px;height:44px;border-radius:12px;border:1px solid rgba(245,243,238,.2);
  background:transparent;color:var(--c-bg);cursor:pointer;font-size:18px;line-height:1;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,26,23,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 主内容区 ============ */
.content{margin-left:var(--nav-w);min-height:100vh;transition:margin-left .28s var(--ease)}

/* ============ 按钮 / 标签 / 链接 ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;min-height:44px;
  padding:14px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn .arr{transition:transform .24s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:var(--c-bg)}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink)}
.btn-accent{background:var(--c-accent);color:var(--c-ink)}
.btn-accent:hover{background:#d9ff6a}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(22,69,60,.06)}
.btn-outline-light{background:transparent;border-color:rgba(245,243,238,.35);color:var(--c-bg)}
.btn-outline-light:hover{background:rgba(245,243,238,.10)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--c-primary);
  font-weight:600;font-size:15px;padding-bottom:2px;
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;
  transition:background-size .28s var(--ease);
}
.link-arrow:hover{background-size:100% 1px}
.link-arrow .arr{transition:transform .24s var(--ease)}
.link-arrow:hover .arr{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:rgba(22,69,60,.08);color:var(--c-primary);font-size:13px;font-weight:600;line-height:1;
}
.badge-promo{background:var(--c-accent-2);color:#fff}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}

/* ============ 区块与排版签名 ============ */
section.block{padding:96px 0}
section.block + section.block{border-top:1px solid var(--c-line)}
.sec-head{display:flex;align-items:center;gap:18px;margin-bottom:30px}
.sec-num{
  font-size:clamp(44px,5vw,72px);font-weight:900;line-height:1;
  letter-spacing:-.03em;color:rgba(15,26,23,.12);
}
.sec-rule{width:40px;height:1px;background:var(--c-line);flex:0 0 40px}
.sec-tag{font-size:13px;letter-spacing:.18em;color:var(--c-muted)}
.block h2{
  font-size:clamp(24px,3vw,38px);font-weight:800;line-height:1.25;
  letter-spacing:-.01em;margin-bottom:18px;max-width:860px;
}
.lead{font-size:17px;line-height:1.85;color:var(--c-muted);max-width:860px;margin-bottom:44px}
.note{font-size:13px;color:var(--c-muted);margin-top:18px}

/* ============ Hero ============ */
.hero{background:var(--c-ink);color:var(--c-bg);padding:76px 0 68px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.eyebrow-num{font-size:clamp(40px,4.6vw,64px);font-weight:900;line-height:1;color:var(--c-accent);letter-spacing:-.04em}
.eyebrow-rule{width:40px;height:1px;background:rgba(245,243,238,.35);flex:0 0 40px}
.eyebrow-tag{font-size:13px;letter-spacing:.18em;color:rgba(245,243,238,.6)}
.hero h1{
  font-size:clamp(32px,4.4vw,56px);font-weight:900;line-height:1.08;
  letter-spacing:-.02em;margin-bottom:20px;
}
.hero-sub{font-size:clamp(17px,1.4vw,20px);line-height:1.7;color:rgba(245,243,238,.8);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:rgba(245,243,238,.62)}
.hero-points li{position:relative;padding-right:18px}
.hero-points li:not(:last-child)::after{
  content:"";position:absolute;right:0;top:50%;width:1px;height:12px;
  background:rgba(245,243,238,.28);transform:translateY(-50%);
}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;
  border:1px solid rgba(245,243,238,.14);background:var(--c-surface-2);
}
.hero-media::after{
  content:"";position:absolute;inset:-12px -12px auto auto;width:72px;height:72px;
  border-top:1px solid rgba(245,243,238,.16);border-right:1px solid rgba(245,243,238,.16);
  border-radius:0 22px 0 0;pointer-events:none;
}

/* ============ 面包屑 ============ */
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);padding-top:22px}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .cur{color:var(--c-ink);font-weight:600}

/* ============ 流程时间轴 ============ */
.timeline{position:relative;padding-left:36px;display:flex;flex-direction:column;gap:38px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:9px;top:10px;bottom:10px;width:1px;background:var(--c-line)}
.tl-item{position:relative}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--c-accent);border:2px solid var(--c-bg);box-shadow:0 0 0 1px var(--c-line);
}
.tl-step{display:block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--c-muted);margin-bottom:6px}
.tl-item h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:8px}
.tl-item p{font-size:15.5px;line-height:1.8;color:var(--c-muted);max-width:780px}

/* ============ 双列对照 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:6px}
.cmp-col{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;position:relative;overflow:hidden;
}
.cmp-col h3{font-size:19px;font-weight:700;margin:16px 0 6px}
.cmp-col > p{font-size:14px;color:var(--c-muted);margin-bottom:10px}
.cmp-row{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--c-line);font-size:15px;line-height:1.7}
.cmp-row:last-child{border-bottom:0}
.cmp-row .mark{flex:0 0 18px;font-weight:900;color:var(--c-muted);line-height:1.7}
.cmp-col.is-ours{border-color:rgba(22,69,60,.25);box-shadow:var(--sh-1)}
.cmp-col.is-ours::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-accent)}
.cmp-col.is-ours .mark{color:var(--c-primary)}

/* ============ 到账参考列表 ============ */
.rate-list{border-top:1px solid var(--c-line);margin-top:6px}
.rate-row{
  display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;
  padding:16px;border-bottom:1px solid var(--c-line);
  transition:background .24s var(--ease);
}
.rate-row:hover{background:var(--c-surface-2)}
.rate-row > div{display:flex;flex-direction:column;gap:4px;min-width:0}
.rate-name{font-size:16px;font-weight:700}
.rate-meta{font-size:13px;color:var(--c-muted)}
.rate-val{font-size:20px;font-weight:900;color:var(--c-primary);white-space:nowrap;letter-spacing:-.01em}

/* ============ 编辑式要点 ============ */
.editor{display:grid;grid-template-columns:minmax(280px,1fr) 1.25fr;gap:56px;align-items:start}
.editor-left .lead{margin-bottom:26px}
.num-row{display:grid;grid-template-columns:64px 1fr;gap:16px;padding:24px 0;border-bottom:1px solid var(--c-line)}
.num-row:first-child{border-top:1px solid var(--c-line)}
.num-row .num{font-size:26px;font-weight:900;color:var(--c-primary);letter-spacing:-.02em;line-height:1.3}
.num-row h3{font-size:18px;font-weight:700;margin-bottom:6px}
.num-row p{font-size:15px;line-height:1.8;color:var(--c-muted)}

/* ============ FAQ ============ */
.faq.accordion{background:transparent;border:0;margin:0}
.faq .accordion-item{position:relative;border:0;border-bottom:1px solid var(--c-line);background:transparent}
.faq .accordion-item.is-active::after{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.faq .accordion-title{
  position:relative;display:flex;align-items:center;min-height:64px;
  padding:16px 48px 16px 20px;border:0;background:transparent;
  color:var(--c-ink);font-size:17px;font-weight:700;line-height:1.5;
  transition:color .24s var(--ease);
}
.faq .accordion-title:focus{outline:2px solid var(--c-accent);outline-offset:-2px}
.faq .accordion-title::before{
  content:"+";position:absolute;right:18px;left:auto;top:50%;
  transform:translateY(-50%);font-size:22px;line-height:1;font-weight:400;
  color:var(--c-primary);transition:transform .28s var(--ease),color .24s var(--ease);
}
.faq .accordion-title[aria-expanded="true"]{color:var(--c-primary)}
.faq .accordion-title[aria-expanded="true"]::before{content:"−";transform:translateY(-50%) rotate(90deg)}
.faq .accordion-content{
  padding:0 48px 24px 20px;border:0;background:transparent;
  color:var(--c-muted);font-size:15px;line-height:1.8;
}

/* ============ CTA 条带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary-deep);color:var(--c-bg);
  border-radius:20px;padding:52px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(245,243,238,.08) 0 1px,transparent 1px 14px);
}
.cta-band h2{font-size:clamp(22px,2.4vw,32px);font-weight:800;line-height:1.3;margin-bottom:12px;position:relative}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(245,243,238,.72);position:relative;max-width:620px}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-deep);color:var(--c-bg);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;margin-bottom:14px}
.foot-desc{font-size:14px;line-height:1.8;color:rgba(245,243,238,.7);max-width:340px}
.foot-contact{font-size:13px;line-height:1.9;color:rgba(245,243,238,.55);margin-top:14px}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:16px}
.foot-links li{margin-bottom:10px}
.foot-links a{
  font-size:14px;color:rgba(245,243,238,.7);display:inline-block;
  transition:color .24s var(--ease),padding-left .24s var(--ease);
}
.foot-links a:hover{color:var(--c-accent);padding-left:4px}
.foot-bar{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  border-top:1px solid rgba(245,243,238,.14);padding:20px 0;
  font-size:13px;color:rgba(245,243,238,.55);
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--c-ink);color:var(--c-bg);border:0;font-size:18px;cursor:pointer;
  display:grid;place-items:center;z-index:75;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease),background .24s var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible}
.to-top:hover{background:var(--c-primary)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 断点 ============ */
@media (min-width:1440px){
  .container{padding:0 40px}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px}
  .shell{padding:22px 12px;overflow:visible}
  .brand-text,.nav-text{opacity:0;width:0;overflow:hidden;white-space:nowrap;transition:opacity .2s var(--ease)}
  .side-nav a{justify-content:center;padding:12px 8px}
  .nav-cta{font-size:0;padding:13px 0;display:flex;justify-content:center}
  .nav-cta::after{content:"咨询";font-size:13px;font-weight:700}
  .shell:hover,.shell:focus-within{width:232px;box-shadow:var(--sh-2)}
  .shell:hover .brand-text,.shell:focus-within .brand-text,
  .shell:hover .nav-text,.shell:focus-within .nav-text{opacity:1;width:auto}
  .shell:hover .side-nav a,.shell:focus-within .side-nav a{justify-content:flex-start;padding:12px 12px 12px 14px}
  .shell:hover .nav-cta,.shell:focus-within .nav-cta{font-size:15px;padding:13px 16px;display:block}
  .shell:hover .nav-cta::after,.shell:focus-within .nav-cta::after{content:""}
}
@media (max-width:1023px){
  .shell{display:none}
  .topbar{display:flex}
  .content{margin-left:0;padding-top:60px}
  .hero{padding:52px 0 46px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-media{order:-1}
  .hero-media::after{display:none}
  section.block{padding:56px 0}
  .compare{grid-template-columns:1fr;gap:20px}
  .editor{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:34px;gap:24px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .timeline{padding-left:28px;gap:32px}
  .tl-item::before{left:-24px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:767px){
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .sec-head{gap:12px}
  .sec-rule{flex:0 0 24px;width:24px}
  .rate-row{align-items:flex-start}
  .rate-val{font-size:17px}
  .hero-points{gap:12px}
  .hero-points li{padding-right:12px}
  .btns-stack .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
/* ===== 设计令牌 ===== */
:root{
  --c-ink:#0F1A17;
  --c-primary:#16453C;
  --c-primary-deep:#0B2A24;
  --c-accent:#C9F24D;
  --c-accent-2:#FF6A3D;
  --c-bg:#F5F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECEAE3;
  --c-line:#DCD8CE;
  --c-muted:#6B746F;
  --r-pill:999px;
  --r-card:16px;
  --r-input:10px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(15,26,23,.05),0 12px 32px -18px rgba(15,26,23,.18);
  --shadow-2:0 18px 44px -22px rgba(15,26,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:232px;
  --pad-sec:96px;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Inter",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
img{max-width:100%;display:block;object-fit:cover;background:var(--c-surface-2)}
a{color:var(--c-primary);text-decoration:none;transition:color .24s var(--ease)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:var(--c-accent);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--c-line);border-radius:8px}
::-webkit-scrollbar-thumb{background:var(--c-muted);border-radius:8px}

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

/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 左侧导航 ===== */
.side-nav-wrap{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--c-ink);color:var(--c-bg);
  display:flex;flex-direction:column;
  padding:28px 18px 24px;z-index:60;overflow-y:auto;overflow-x:hidden;
  transition:width .28s var(--ease),padding .28s var(--ease);
}
.nav-logo{display:flex;align-items:center;gap:10px;margin-bottom:34px;min-height:32px}
.brand-mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:6px;background:var(--c-accent);color:var(--c-ink);
  font-size:13px;font-weight:900;display:flex;align-items:center;justify-content:center;line-height:1;
}
.logo-text{
  font-size:14px;font-weight:700;color:var(--c-bg);letter-spacing:.02em;line-height:1.35;
  white-space:normal;
}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:rgba(245,243,238,.78);font-size:14px;font-weight:500;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.side-nav a::before{
  content:"";position:absolute;left:-18px;top:8px;bottom:8px;width:3px;background:var(--c-accent);
  opacity:0;transition:opacity .24s var(--ease);
}
.side-nav a:hover{background:rgba(201,242,77,.06);color:var(--c-bg)}
.side-nav a:hover::before{opacity:.45}
.side-nav a.is-active{background:rgba(201,242,77,.10);color:var(--c-bg);font-weight:700}
.side-nav a.is-active::before{opacity:1}
.nav-dot{
  flex:0 0 auto;width:6px;height:6px;border-radius:2px;background:rgba(245,243,238,.32);
  transition:background .24s var(--ease);
}
.side-nav a:hover .nav-dot,.side-nav a.is-active .nav-dot{background:var(--c-accent)}
.nav-text{white-space:nowrap}
.nav-foot{padding-top:20px;border-top:1px solid rgba(245,243,238,.12);margin-top:20px}
.nav-cta{
  display:flex;align-items:center;justify-content:center;
  width:100%;height:46px;border-radius:var(--r-pill);
  background:var(--c-accent);color:var(--c-ink);font-size:14px;font-weight:700;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.nav-cta:hover{background:#d8ff63;color:var(--c-ink);transform:translateY(-2px)}

/* ===== 移动端顶栏 ===== */
.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:var(--c-ink);display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
}
.mobile-brand{display:flex;align-items:center;gap:10px;color:var(--c-bg);font-size:14px;font-weight:700}
.mobile-brand:hover{color:var(--c-bg)}
.burger{
  width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:5px;border-radius:10px;
}
.burger span{display:block;width:20px;height:2px;background:var(--c-bg);border-radius:2px;transition:transform .24s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,26,23,.55);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;width:min(84vw,320px);height:100%;
  background:var(--c-ink);z-index:90;padding:24px 18px;overflow-y:auto;
  transform:translateX(-100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--c-bg);font-size:14px;font-weight:700}
.drawer-close{
  width:40px;height:40px;border-radius:10px;color:var(--c-bg);font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(245,243,238,.08)}
.drawer .side-nav{gap:2px}
.drawer .side-nav a::before{left:-18px}

/* ===== 页面主体 ===== */
.main{display:block}
@media (min-width:1024px){
  body{padding-left:var(--nav-w)}
  .mobile-bar{display:none}
  .drawer,.drawer-mask{display:none}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px}
  .side-nav-wrap{width:88px;padding:24px 14px}
  .side-nav-wrap .logo-text{display:none}
  .side-nav-wrap .nav-text{display:none}
  .side-nav-wrap .nav-cta{font-size:0;padding:0}
  .side-nav-wrap .nav-cta::after{content:"\f075";font-family:"Font Awesome 6 Free";font-weight:900;font-size:16px}
  .side-nav-wrap:hover{width:232px;padding:28px 18px 24px}
  .side-nav-wrap:hover .logo-text,
  .side-nav-wrap:hover .nav-text{display:inline}
  .side-nav-wrap:hover .nav-cta{font-size:14px}
  .side-nav-wrap:hover .nav-cta::after{content:none}
}
@media (max-width:1023px){
  body{padding-top:60px}
  .side-nav-wrap{display:none}
}

/* ===== 面包屑 ===== */
.crumb-bar{border-bottom:1px solid var(--c-line);background:var(--c-bg)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:16px 0;font-size:14px;color:var(--c-muted);
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .cur{color:var(--c-ink);font-weight:500}

/* ===== 强排版签名 ===== */
.sec-sign{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.sec-num{
  font-family:"Inter",sans-serif;font-weight:900;font-size:clamp(44px,6vw,72px);
  line-height:1;letter-spacing:-.04em;color:rgba(15,26,23,.13);
}
.sec-line{display:block;width:40px;height:1px;background:var(--c-line);flex:0 0 auto}
.sec-tag{font-size:13px;letter-spacing:.18em;color:var(--c-muted);font-weight:500}
.on-dark .sec-num{color:rgba(201,242,77,.28)}
.on-dark .sec-line{background:rgba(245,243,238,.25)}
.on-dark .sec-tag{color:rgba(245,243,238,.6)}

/* ===== Hero ===== */
.cat-hero{padding:72px 0 56px;border-bottom:1px solid var(--c-line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-copy h1{
  font-size:clamp(34px,5.2vw,62px);font-weight:900;line-height:1.08;letter-spacing:-.02em;
  color:var(--c-ink);
}
.hero-copy h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{margin-top:22px;font-size:20px;line-height:1.7;color:rgba(15,26,23,.72);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:16px;margin-top:30px;font-size:13px;color:var(--c-muted);
}
.hero-facts li{position:relative;padding-left:14px}
.hero-facts li::before{content:"";position:absolute;left:0;top:9px;width:1px;height:12px;background:var(--c-line)}
.hero-facts li:first-child{padding-left:0}
.hero-facts li:first-child::before{display:none}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;border-radius:20px;object-fit:cover;
  border:1px solid var(--c-line);
}
.hero-media::after{
  content:"";position:absolute;inset:14px -14px -14px 14px;border:1px solid rgba(22,69,60,.14);
  border-radius:20px;z-index:-1;
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .cat-hero{padding:48px 0 40px}
  .hero-sub{font-size:18px;margin-top:18px}
}
@media (max-width:767px){
  .hero-media img{aspect-ratio:16/10;border-radius:16px}
  .hero-media::after{display:none}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
  min-height:48px;
}
.btn i{transition:transform .24s var(--ease);font-size:13px}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:var(--c-bg)}
.btn-primary:hover{background:var(--c-accent);color:var(--c-ink)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-ghost:hover{background:rgba(22,69,60,.06);color:var(--c-primary)}
.btn-ghost:active{transform:scale(.98)}
.btn-accent{background:var(--c-accent);color:var(--c-ink)}
.btn-accent:hover{background:#d8ff63;color:var(--c-ink)}
.btn-line-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);
  position:relative;padding-bottom:2px;
}
.btn-line-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.btn-line-link:hover::after{transform:scaleX(1)}
.btn-line-link i{transition:transform .24s var(--ease)}
.btn-line-link:hover i{transform:translateX(4px)}

/* ===== 板块 ===== */
.section{padding:var(--pad-sec) 0}
.section.alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.sec-title{font-size:clamp(24px,3vw,40px);font-weight:800;line-height:1.2;letter-spacing:-.01em}
.sec-desc{margin-top:14px;font-size:16px;color:var(--c-muted);max-width:640px}

/* ===== 双列信息卡 ===== */
.two-col{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.info-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.info-card .idx{
  font-family:"Inter",sans-serif;font-weight:900;font-size:13px;letter-spacing:.16em;color:var(--c-primary);
  background:rgba(22,69,60,.08);border-radius:var(--r-badge);padding:4px 10px;align-self:flex-start;
}
.info-card h3{font-size:20px;font-weight:700;line-height:1.4}
.info-card p{font-size:15px;color:var(--c-muted);line-height:1.75}
.info-card .card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:8px;
}
@media (max-width:767px){
  .two-col{grid-template-columns:1fr;gap:16px}
  .info-card{padding:22px}
}

/* ===== 时间轴 ===== */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--c-line)}
.tl-item{position:relative;padding:0 0 34px 22px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--c-accent);border:2px solid var(--c-ink);transform:translateX(0);
}
.tl-item h3{font-size:19px;font-weight:700;margin-bottom:6px}
.tl-item p{font-size:15px;color:var(--c-muted);max-width:720px}
.tl-time{
  font-family:"Inter",sans-serif;font-size:13px;font-weight:700;color:var(--c-primary);
  letter-spacing:.06em;margin-bottom:4px;display:block;
}

/* ===== 指标带 ===== */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.metric{padding:32px 24px;border-right:1px solid var(--c-line)}
.metric:last-child{border-right:0}
.metric-num{font-family:"Inter",sans-serif;font-weight:900;font-size:clamp(32px,4vw,48px);line-height:1;color:var(--c-primary);letter-spacing:-.03em}
.metric-num span{font-size:16px;font-weight:700;margin-left:4px}
.metric-label{margin-top:10px;font-size:13px;color:var(--c-muted);line-height:1.6}
@media (max-width:900px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric{border-bottom:1px solid var(--c-line)}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:0}
}
@media (max-width:520px){
  .metric{padding:24px 16px}
}

/* ===== 做法对照 ===== */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cmp-col{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px}
.cmp-col.is-right{border-top:3px solid var(--c-accent)}
.cmp-col h3{font-size:19px;font-weight:700;margin-bottom:18px}
.cmp-col li{
  display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;color:var(--c-muted);line-height:1.7;
}
.cmp-col li:last-child{border-bottom:0;padding-bottom:0}
.cmp-col li i{margin-top:5px;font-size:13px;flex:0 0 auto}
.cmp-col.is-left li i{color:var(--c-accent-2)}
.cmp-col.is-right li i{color:var(--c-primary)}
.cmp-col li strong{color:var(--c-ink);font-weight:600}
@media (max-width:767px){
  .compare{grid-template-columns:1fr}
}

/* ===== 图文日程 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:16/10;border-radius:20px;border:1px solid var(--c-line);object-fit:cover;
}
.sch-list{border-top:1px solid var(--c-line);margin-top:26px}
.sch-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:18px;
  padding:16px 4px;border-bottom:1px solid var(--c-line);font-size:15px;
  transition:background .24s var(--ease);
}
.sch-list li:hover{background:var(--c-surface-2)}
.sch-list .day{color:var(--c-ink);font-weight:600}
.sch-list .time{font-family:"Inter",sans-serif;font-size:13px;color:var(--c-muted);letter-spacing:.04em}
@media (max-width:1023px){
  .split{grid-template-columns:1fr;gap:32px}
}

/* ===== FAQ ===== */
.faq-list{max-width:920px;background:transparent;border:0;margin:0}
.faq-list .accordion-item{background:transparent;border:0}
.faq-list .accordion-title{
  display:block;position:relative;
  padding:22px 60px 22px 20px;
  border:0;border-bottom:1px solid var(--c-line);
  font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.55;
  background:transparent;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.faq-list .accordion-title:hover,.faq-list .accordion-title:focus{background:var(--c-surface-2);color:var(--c-ink)}
.faq-list .accordion-title::before{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  margin:0;font-family:"Inter",sans-serif;font-size:24px;font-weight:500;line-height:1;
  color:var(--c-primary);transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-list .accordion-item.is-active > .accordion-title{color:var(--c-primary)}
.faq-list .accordion-item.is-active > .accordion-title::after{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:var(--c-accent);
}
.faq-list .accordion-item.is-active > .accordion-title::before{transform:translateY(-50%) rotate(45deg)}
.faq-list .accordion-content{
  display:none;padding:6px 60px 24px 20px;
  border:0;border-bottom:1px solid var(--c-line);
  background:transparent;color:var(--c-muted);font-size:15px;line-height:1.8;
}
.faq-list .accordion-content p{margin:0 0 10px}
.faq-list .accordion-content p:last-child{margin-bottom:0}

/* ===== CTA 条带 ===== */
.cta-band{
  background:var(--c-primary-deep);color:var(--c-bg);
  padding:56px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,rgba(245,243,238,.08) 0 1px,transparent 1px 14px);
  opacity:.9;pointer-events:none;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3;color:var(--c-bg)}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(245,243,238,.72);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{color:var(--c-bg);border-color:rgba(245,243,238,.35)}
.cta-actions .btn-ghost:hover{background:rgba(245,243,238,.08);color:var(--c-bg)}

/* ===== 表单 ===== */
.form-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.form-aside h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.25}
.form-aside p{margin-top:16px;font-size:15px;color:var(--c-muted)}
.tips{margin-top:26px;border-top:1px solid var(--c-line)}
.tips li{padding:14px 0;border-bottom:1px solid var(--c-line);font-size:14px;color:var(--c-muted);display:flex;gap:10px}
.tips li i{color:var(--c-primary);margin-top:4px;font-size:13px}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--c-muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-ink);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:var(--c-surface);
  box-shadow:0 0 0 3px rgba(22,69,60,.12);
}
.field textarea{min-height:120px;resize:vertical}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-submit{
  width:100%;height:52px;border-radius:var(--r-pill);background:var(--c-primary);color:var(--c-bg);
  font-size:15px;font-weight:700;transition:background .24s var(--ease),color .24s var(--ease);
}
.form-submit:hover{background:var(--c-accent);color:var(--c-ink)}
.form-submit:active{transform:scale(.99)}
.form-note{margin-top:14px;font-size:13px;color:var(--c-muted);line-height:1.7}
@media (max-width:900px){
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .form-card{padding:24px}
}
@media (max-width:520px){
  .field-row{grid-template-columns:1fr;gap:0}
}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink);color:var(--c-bg);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--c-bg);margin-bottom:16px}
.foot-desc{font-size:14px;color:rgba(245,243,238,.62);line-height:1.8;max-width:340px}
.foot-contact{margin-top:16px;font-size:13px;color:rgba(245,243,238,.5);line-height:1.9}
.site-footer h4{font-size:14px;font-weight:700;color:var(--c-bg);margin-bottom:18px;letter-spacing:.04em}
.foot-links li{margin-bottom:11px}
.foot-links a{font-size:14px;color:rgba(245,243,238,.62)}
.foot-links a:hover{color:var(--c-accent)}
.foot-bar{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(245,243,238,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(245,243,238,.45);
}
@media (max-width:1023px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:600px){
  .foot-grid{grid-template-columns:1fr}
  .site-footer{padding:48px 0 24px}
}

/* ===== 回到顶部 ===== */
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--c-ink);color:var(--c-bg);display:flex;align-items:center;justify-content:center;
  z-index:75;opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--c-primary);color:var(--c-bg)}

/* ===== 入场动效 ===== */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.fade-up.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .fade-up{opacity:1;transform:none}
}

@media (max-width:767px){
  :root{--pad-sec:56px}
  .container{padding:0 18px}
  .sec-head{margin-bottom:32px}
}