/* roulang page: index */
:root{
  --coral:#E4573D;
  --ink:#16302B;
  --sand:#F7F2E8;
  --paper:#FFFDF8;
  --gold:#C9A227;
  --muted:#5E6B64;
  --line:rgba(22,48,43,.14);
  --line-dark:rgba(247,242,232,.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 0 rgba(22,48,43,.03),0 14px 30px -22px rgba(22,48,43,.5);
  --shadow-hover:0 22px 44px -26px rgba(22,48,43,.55);
  --maxw:1240px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--coral)}
h1,h2,h3,h4{font-family:"Noto Serif SC","Songti SC",Georgia,serif;font-weight:700;margin:0;letter-spacing:.01em}
h1{font-size:clamp(2.4rem,4.2vw,4.1rem);line-height:1.14;font-weight:900}
h2{font-size:clamp(1.8rem,2.8vw,2.5rem);line-height:1.24}
h3{font-size:clamp(1.15rem,1.5vw,1.35rem);line-height:1.4}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--coral);outline-offset:3px;border-radius:4px;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:var(--sand)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--coral);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--coral);display:inline-block}
.section-head{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;margin-bottom:52px}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0}
.section--dark .section-head p{color:rgba(247,242,232,.72)}
.section-head--wide{grid-template-columns:1fr;max-width:820px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.92rem 1.7rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn .arrow{transition:transform var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--sand)}
.btn-primary:hover{background:var(--coral);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink)}
.section--dark .btn-ghost{border-color:var(--line-dark);color:var(--sand)}
.section--dark .btn-ghost:hover{background:rgba(247,242,232,.08);border-color:var(--sand)}
.btn-text{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.95rem;
  color:var(--coral);border-bottom:1px solid transparent;transition:border-color var(--ease);
  background:none;border-top:0;border-left:0;border-right:0;padding:0;cursor:pointer;
}
.btn-text:hover{border-bottom-color:var(--coral)}
.btn-block{width:100%;justify-content:center}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:.22rem .7rem;border:1px solid var(--line);border-radius:999px;
  font-size:.74rem;letter-spacing:.06em;color:var(--muted);background:transparent;white-space:nowrap;
}
.badge--coral{border-color:rgba(228,87,61,.45);color:var(--coral)}
.badge--gold{border-color:rgba(201,162,39,.5);color:#9a7c17}
.section--dark .badge{border-color:var(--line-dark);color:rgba(247,242,232,.75)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,242,232,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(22,48,43,.7)}
.header-inner{display:flex;align-items:center;gap:36px;height:78px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:none}
.brand-mark{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.28rem;letter-spacing:.04em}
.brand-sub{font-size:.68rem;letter-spacing:.22em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:.94rem;color:var(--ink);padding:6px 0;font-weight:500;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;right:-11px;bottom:2px;width:4px;height:4px;border-radius:50%;background:var(--coral);
}
.header-cta{margin-left:12px;flex:none}
.text-cta{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--line);
}
.text-cta:hover{border-bottom-color:var(--coral);color:var(--coral)}
.text-cta span{transition:transform var(--ease)}
.text-cta:hover span{transform:translateX(4px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--sand);
  display:flex;flex-direction:column;padding:28px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--ink);padding:6px 10px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:30px 0;flex:1}
.drawer-nav a{
  font-family:"Noto Serif SC",serif;font-size:1.6rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--coral)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--sand);
  padding:110px 0 96px;
  background:
    linear-gradient(180deg,rgba(22,48,43,.94),rgba(22,48,43,.88)),
    url('/assets/images/2dab2463f3c40772.webp') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(247,242,232,.16);
}
.hero-top{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.hero h1{color:var(--paper);max-width:14em}
.hero .eyebrow{color:var(--gold)}
.hero .eyebrow::before{background:var(--gold)}
.hero-lead{
  margin-top:26px;max-width:36em;color:rgba(247,242,232,.82);font-size:16.5px;line-height:1.95;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:34px}
.hero-actions .btn-primary{background:var(--coral);color:var(--ink)}
.hero-actions .btn-primary:hover{background:var(--paper);color:var(--ink)}
.hero-actions .btn-text{color:var(--sand);border-bottom-color:rgba(247,242,232,.4)}
.hero-actions .btn-text:hover{color:var(--coral);border-bottom-color:var(--coral)}
.hero-side{display:flex;flex-direction:column;gap:14px;padding-top:8px}
.mini-metric{
  display:flex;align-items:flex-start;gap:16px;padding:18px 20px;
  border:1px solid var(--line-dark);border-radius:var(--radius-sm);
  background:rgba(247,242,232,.04);
}
.mini-metric b{
  font-family:"Noto Serif SC",serif;font-size:1.5rem;line-height:1;color:var(--sand);
  font-variant-numeric:tabular-nums;
}
.mini-metric span{font-size:.86rem;color:rgba(247,242,232,.7);line-height:1.6}

/* before / after */
.ba-wrap{margin-top:64px}
.ba-title{
  display:flex;align-items:center;gap:14px;font-size:.82rem;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(247,242,232,.6);margin-bottom:20px;
}
.ba-title::after{content:"";flex:1;height:1px;background:var(--line-dark)}
.ba-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ba-card{
  border-radius:var(--radius);padding:30px 30px 26px;border:1px solid var(--line-dark);
  background:rgba(247,242,232,.05);position:relative;overflow:hidden;
}
.ba-card::before{
  position:absolute;top:0;left:0;right:0;height:3px;content:"";
}
.ba-before::before{background:rgba(247,242,232,.28)}
.ba-after::before{background:var(--coral)}
.ba-label{
  display:inline-block;font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(247,242,232,.55);margin-bottom:14px;
}
.ba-after .ba-label{color:var(--coral)}
.ba-card h3{color:var(--paper);margin-bottom:16px;font-size:1.2rem}
.ba-card li{
  position:relative;padding-left:20px;font-size:.95rem;line-height:1.8;
  color:rgba(247,242,232,.8);margin-bottom:12px;
}
.ba-card li:last-child{margin-bottom:0}
.ba-card li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  border:1px solid rgba(247,242,232,.45);
}
.ba-after li::before{background:var(--coral);border-color:var(--coral)}

/* ---------- 指标看板 ---------- */
.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.metric-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;position:relative;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.28)}
.metric-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.metric-index{
  font-size:.78rem;letter-spacing:.14em;color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700;
}
.metric-tag{font-size:.72rem;color:var(--muted);letter-spacing:.08em}
.metric-value{
  font-family:"Noto Serif SC",serif;font-size:2.15rem;line-height:1;font-weight:900;
  font-variant-numeric:tabular-nums;margin-bottom:8px;
}
.metric-name{font-size:.96rem;font-weight:600;margin-bottom:10px}
.metric-card p{font-size:.88rem;color:var(--muted);line-height:1.75;margin:0}
.metrics-note{margin-top:22px;font-size:.82rem;color:var(--muted)}

/* ---------- 服务矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.m-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;gap:12px;position:relative;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(228,87,61,.45)}
.m-card h3{font-size:1.22rem}
.m-card p{font-size:.9rem;color:var(--muted);line-height:1.8;margin:0}
.m-card .m-link{margin-top:auto;font-size:.88rem;font-weight:600;color:var(--coral)}
.m-card .m-link:hover{border-bottom:1px solid var(--coral)}
.m-card--main{background:var(--ink);color:var(--sand);border-color:var(--ink)}
.m-card--main h3{color:var(--paper)}
.m-card--main p{color:rgba(247,242,232,.76)}
.m-card--main .m-link{color:var(--coral)}
.m-card--main .m-num{color:rgba(247,242,232,.4)}
.m-num{
  font-size:.76rem;letter-spacing:.16em;color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700;
}
.m-card--tall{grid-row:span 1}
.col-7{grid-column:span 7}
.col-5{grid-column:span 5}
.col-4{grid-column:span 4}
.col-8{grid-column:span 8}
.col-6{grid-column:span 6}
.col-12{grid-column:span 12}

/* ---------- 通用卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.26)}
.card h3{margin-bottom:10px}
.card p{font-size:.9rem;color:var(--muted);line-height:1.8;margin:0}
.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px}

/* 进度条 */
.bar{height:6px;border-radius:999px;background:rgba(22,48,43,.08);overflow:hidden;margin-top:14px}
.bar i{display:block;height:100%;background:var(--coral);border-radius:999px}

/* ---------- 状态列表（进行中 / 规划中） ---------- */
.status-list{border-top:1px solid var(--line)}
.status-item{
  display:grid;grid-template-columns:64px 1fr auto;gap:24px;align-items:start;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.status-item .s-num{
  font-family:"Noto Serif SC",serif;font-size:1.1rem;color:var(--gold);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.status-item h3{font-size:1.1rem;margin-bottom:6px}
.status-item p{font-size:.9rem;color:var(--muted);margin:0;line-height:1.8}
.status-flag{
  font-size:.74rem;letter-spacing:.08em;padding:.25rem .7rem;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);white-space:nowrap;align-self:center;
}
.status-flag--live{border-color:rgba(228,87,61,.45);color:var(--coral)}
.status-flag--next{border-color:rgba(201,162,39,.55);color:#9a7c17}

/* ---------- 前后对比 / 结果 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-col{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;
}
.compare-col--after{border-color:rgba(228,87,61,.4);background:#fff}
.compare-col h3{display:flex;align-items:center;gap:10px;margin-bottom:22px;font-size:1.1rem}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;background:rgba(22,48,43,.25)}
.dot--coral{background:var(--coral)}
.compare-row{margin-bottom:20px}
.compare-row:last-child{margin-bottom:0}
.compare-row .row-top{display:flex;justify-content:space-between;font-size:.88rem;font-weight:600;gap:12px}
.compare-row .row-top span:last-child{color:var(--muted);font-weight:400}
.compare-row p{font-size:.84rem;color:var(--muted);margin:6px 0 0;line-height:1.7}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:10px}
.timeline::before{
  content:"";position:absolute;top:11px;left:4%;right:4%;height:1px;background:var(--line);
}
.tl-node{position:relative;padding-top:34px}
.tl-node::before{
  content:"";position:absolute;top:5px;left:0;width:13px;height:13px;border-radius:50%;
  background:var(--sand);border:1px solid rgba(22,48,43,.3);
}
.tl-node.is-current::before{background:var(--coral);border-color:var(--coral);box-shadow:0 0 0 5px rgba(228,87,61,.14)}
.tl-node .tl-step{font-size:.75rem;letter-spacing:.16em;color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700}
.tl-node h3{font-size:1.02rem;margin:8px 0 8px}
.tl-node p{font-size:.85rem;color:var(--muted);line-height:1.75;margin:0}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.26)}
.scene-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:rgba(22,48,43,.06)}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:1.1rem}
.scene-body p{font-size:.88rem;color:var(--muted);margin:0;line-height:1.75}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}

/* ---------- 城市标签墙 ---------- */
.city-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.city-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper);
}
.city-card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.city-card figcaption{padding:18px 22px;font-size:.86rem;color:var(--muted);line-height:1.75}
.city-tags{display:flex;flex-wrap:wrap;gap:10px}
.city-tag{
  font-size:.86rem;padding:.5rem 1rem;border:1px solid var(--line);border-radius:999px;
  color:var(--ink);background:var(--paper);transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.city-tag:hover{border-color:var(--coral);color:var(--coral);background:#fff}
.city-copy p{color:var(--muted);font-size:.95rem;line-height:1.9}

/* ---------- 安全机制（深色） ---------- */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.safety-card{
  border:1px solid var(--line-dark);border-radius:var(--radius);padding:26px 24px;
  background:rgba(247,242,232,.04);transition:border-color var(--ease),background var(--ease);
}
.safety-card:hover{border-color:rgba(228,87,61,.5);background:rgba(247,242,232,.07)}
.safety-card .safety-num{font-size:.76rem;letter-spacing:.16em;color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700}
.safety-card h3{color:var(--paper);font-size:1.05rem;margin:10px 0 10px}
.safety-card p{font-size:.87rem;color:rgba(247,242,232,.74);margin:0;line-height:1.8}

/* ---------- 口碑 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.voice-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;
}
.voice-card::before{
  content:"“";position:absolute;top:12px;right:22px;font-family:Georgia,serif;font-size:3.4rem;
  color:rgba(228,87,61,.18);line-height:1;
}
.voice-card blockquote{margin:0 0 18px;font-size:.95rem;line-height:1.9;color:var(--ink)}
.voice-meta{display:flex;align-items:center;gap:10px;font-size:.8rem;color:var(--muted)}

/* ---------- 保障条 ---------- */
.guard-list{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.guard-item{padding:26px 22px;border-right:1px solid var(--line)}
.guard-item:last-child{border-right:0}
.guard-item h3{font-size:.98rem;margin-bottom:8px}
.guard-item p{font-size:.83rem;color:var(--muted);margin:0;line-height:1.75}
.guard-item .g-num{font-size:.74rem;letter-spacing:.14em;color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700;display:block;margin-bottom:8px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  position:relative;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(228,87,61,.4);box-shadow:var(--shadow-hover)}
.step-card .step-num{font-family:"Noto Serif SC",serif;font-size:1.5rem;font-weight:900;color:var(--gold);line-height:1;font-variant-numeric:tabular-nums}
.step-card h3{font-size:1.02rem;margin:14px 0 8px}
.step-card p{font-size:.86rem;color:var(--muted);margin:0;line-height:1.75}

/* ---------- 快速解答 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.quick-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px}
.quick-card h3{font-size:1.02rem;margin-bottom:10px;color:var(--ink)}
.quick-card p{font-size:.88rem;color:var(--muted);margin:0;line-height:1.8}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.26)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:rgba(22,48,43,.06)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.76rem;color:var(--muted)}
.news-body h3{font-size:1.04rem;line-height:1.5}
.news-body h3 a{color:var(--ink)}
.news-body h3 a:hover{color:var(--coral)}
.news-body p{font-size:.86rem;color:var(--muted);margin:0;line-height:1.75}
.link-more{font-size:.84rem;font-weight:600;color:var(--coral);margin-top:auto;padding-top:8px}
.link-more:hover{border-bottom:1px solid var(--coral)}
.empty-state{
  border:1px dashed rgba(22,48,43,.25);border-radius:var(--radius);
  padding:48px 28px;text-align:center;color:var(--muted);font-size:.94rem;background:var(--sand);
}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;font-family:"Noto Serif SC",serif;font-size:1.08rem;font-weight:700;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:"Noto Sans SC",sans-serif;font-size:1.4rem;line-height:1;color:var(--coral);
  transition:transform .2s ease;flex:none;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--coral)}
.faq-body{padding:0 0 26px;font-size:.93rem;color:var(--muted);line-height:1.9;max-width:56em}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-copy h2{margin-bottom:18px}
.contact-copy p{color:var(--muted);font-size:.95rem;line-height:1.9}
.contact-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.contact-points li{position:relative;padding-left:20px;font-size:.9rem;color:var(--ink)}
.contact-points li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;border-radius:50%;background:var(--coral)}
.form-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px 32px;
  box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.84rem;font-weight:600;margin-bottom:8px;color:var(--ink)}
.field .req{color:var(--coral);margin-left:2px}
.field input[type="text"],.field input[type="tel"],.field select,.field textarea{
  width:100%;padding:.8rem .95rem;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--sand);color:var(--ink);font-size:.93rem;font-family:inherit;line-height:1.6;
  transition:border-color var(--ease),background var(--ease);
}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{background:#fff;border-color:var(--ink);outline:none}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--coral);background:#fff7f4}
.field .err-msg{display:none;font-size:.78rem;color:var(--coral);margin-top:6px}
.field.has-error .err-msg{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:.84rem;color:var(--muted);line-height:1.7}
.check-row input{margin-top:.35em;accent-color:var(--coral)}
.form-note{font-size:.78rem;color:var(--muted);margin-top:14px;line-height:1.7}
.form-result{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--radius-sm);
  border:1px solid rgba(22,48,43,.4);background:rgba(22,48,43,.06);color:var(--ink);font-size:.88rem;
}
.form-result.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--sand);padding:76px 0 34px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.footer-brand .brand-mark{color:var(--paper);font-size:1.35rem}
.footer-brand .brand-sub{color:rgba(247,242,232,.55)}
.footer-brand p{margin-top:18px;font-size:.87rem;color:rgba(247,242,232,.68);line-height:1.9;max-width:30em}
.footer-col h4{
  font-family:"Noto Sans SC",sans-serif;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(247,242,232,.5);margin-bottom:16px;font-weight:700;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:.88rem;color:rgba(247,242,232,.82)}
.footer-col a:hover{color:var(--coral)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;padding-top:26px;font-size:.8rem;color:rgba(247,242,232,.55)}
.footer-bottom p{margin:0}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .section{padding:88px 0}
  .hero{padding:88px 0 80px}
  .header-inner{gap:24px}
  .nav-desktop{gap:22px}
}
@media (max-width:1024px){
  .hero-top{grid-template-columns:1fr;gap:36px}
  .hero h1{max-width:none}
  .hero-side{flex-direction:row;flex-wrap:wrap;gap:12px}
  .mini-metric{flex:1 1 200px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .section-head{grid-template-columns:1fr;gap:20px;margin-bottom:40px}
  .col-7,.col-5,.col-4,.col-8,.col-6{grid-column:span 12}
  .scene-grid,.safety-grid,.news-grid,.grid-3,.voice-grid,.steps,.guard-list{grid-template-columns:repeat(2,1fr)}
  .guard-list .guard-item:nth-child(2){border-right:0}
  .guard-list .guard-item{border-bottom:1px solid var(--line)}
  .city-wrap{grid-template-columns:1fr;gap:32px}
  .contact-wrap{grid-template-columns:1fr;gap:34px}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .nav-desktop,.header-cta{display:none}
  .menu-btn{display:flex}
  .header-inner{height:70px}
  .ba-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:64px 0}
  .hero{padding:64px 0 60px}
  .metrics-grid,.scene-grid,.safety-grid,.news-grid,.grid-2,.grid-3,.voice-grid,.steps,.quick-grid,.compare,.grid-4,.ba-grid{grid-template-columns:1fr}
  .guard-list{grid-template-columns:1fr}
  .guard-list .guard-item{border-right:0}
  .form-row{grid-template-columns:1fr}
  .status-item{grid-template-columns:44px 1fr;gap:14px}
  .status-item .status-flag{grid-column:2;justify-self:start}
  .timeline{grid-template-columns:1fr;gap:6px}
  .tl-node{padding-top:26px;padding-left:0}
  .form-card{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .card:hover,.metric-card:hover,.m-card:hover,.scene-card:hover,.news-card:hover,.step-card:hover{transform:none}
}
@media (max-width:520px){
  .container{padding:0 18px}
  h1{font-size:2.05rem}
  h2{font-size:1.62rem}
  .hero-actions{gap:16px}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-actions .btn-text{justify-content:flex-start}
  .mini-metric{padding:14px 16px}
  .mini-metric b{font-size:1.25rem}
  .metric-value{font-size:1.8rem}
  .btn{padding:.85rem 1.3rem;font-size:.9rem}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --coral:#E4573D;
  --ink:#16302B;
  --sand:#F7F2E8;
  --paper:#FFFDF8;
  --gold:#C9A227;
  --muted:#5E6B64;
  --line:rgba(22,48,43,.14);
  --line-dark:rgba(247,242,232,.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 0 rgba(22,48,43,.03),0 14px 30px -22px rgba(22,48,43,.5);
  --shadow-hover:0 22px 44px -26px rgba(22,48,43,.55);
  --maxw:1240px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--coral)}
button{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--coral);outline-offset:3px;border-radius:4px;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:var(--sand)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.18em;
  color:var(--coral);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--coral);display:inline-block}
.section-head{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;margin-bottom:44px}
.section-head h2{
  font-family:"Noto Serif SC",serif;font-weight:900;
  font-size:clamp(1.6rem,2.4vw,2.3rem);line-height:1.3;margin:0;
}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0}
.section--dark .section-head p{color:rgba(247,242,232,.72)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.92rem 1.7rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn .arrow{transition:transform var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--sand)}
.btn-primary:hover{background:var(--coral);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink)}
.section--dark .btn-ghost{border-color:var(--line-dark);color:var(--sand)}
.section--dark .btn-ghost:hover{background:rgba(247,242,232,.08);border-color:var(--sand)}
.btn-text{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.95rem;
  color:var(--coral);border-bottom:1px solid transparent;transition:border-color var(--ease);
  background:none;border-top:0;border-left:0;border-right:0;padding:0;cursor:pointer;
}
.btn-text:hover{border-bottom-color:var(--coral)}
.btn-block{width:100%;justify-content:center}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:.22rem .7rem;border:1px solid var(--line);border-radius:999px;
  font-size:.74rem;letter-spacing:.06em;color:var(--muted);background:transparent;white-space:nowrap;
}
.badge--coral{border-color:rgba(228,87,61,.45);color:var(--coral)}
.badge--gold{border-color:rgba(201,162,39,.5);color:#9a7c17}
.section--dark .badge{border-color:var(--line-dark);color:rgba(247,242,232,.75)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,242,232,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(22,48,43,.7)}
.header-inner{display:flex;align-items:center;gap:36px;height:78px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:none}
.brand-mark{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.28rem;letter-spacing:.04em}
.brand-sub{font-size:.68rem;letter-spacing:.22em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:.94rem;color:var(--ink);padding:6px 0;font-weight:500;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;right:-11px;bottom:2px;width:4px;height:4px;border-radius:50%;background:var(--coral);
}
.header-cta{margin-left:12px;flex:none}
.text-cta{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--line);
}
.text-cta:hover{border-bottom-color:var(--coral);color:var(--coral)}
.text-cta span{transition:transform var(--ease)}
.text-cta:hover span{transform:translateX(4px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--sand);
  display:flex;flex-direction:column;padding:28px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--ink);padding:6px 10px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:30px 0;flex:1}
.drawer-nav a{
  font-family:"Noto Serif SC",serif;font-size:1.6rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--coral)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}

/* ---------- 文章页：面包屑 ---------- */
.article-hero{padding:56px 0 60px;background:var(--sand);border-bottom:1px solid var(--line)}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:.84rem;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--coral);border-bottom-color:var(--coral)}
.breadcrumb .sep{color:rgba(22,48,43,.3)}
.breadcrumb .current{color:var(--ink);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-family:"Noto Serif SC",serif;font-weight:900;
  font-size:clamp(1.9rem,3.4vw,3rem);line-height:1.24;margin:16px 0 0;
  max-width:22ch;
}
.article-lead{
  margin:22px 0 0;max-width:760px;color:var(--muted);font-size:16.5px;line-height:1.9;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  list-style:none;margin:26px 0 0;padding:0;font-size:.86rem;color:var(--muted);
}
.article-meta li{display:flex;align-items:center;gap:8px}
.article-meta li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--gold)}
.article-meta li:first-child::before{background:var(--coral)}
.article-figure{margin:38px 0 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-figure figcaption{
  padding:12px 18px;font-size:.82rem;color:var(--muted);border-top:1px solid var(--line);background:var(--paper);
}

/* ---------- 正文布局 ---------- */
.article-main{padding:72px 0 88px;background:var(--paper)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.article-col{min-width:0}
.toc-mobile{display:none}
.prose{
  font-size:17px;line-height:1.9;color:#22332f;max-width:820px;overflow-wrap:break-word;
}
.prose > *:first-child{margin-top:0}
.prose h2{
  position:relative;font-family:"Noto Serif SC",serif;font-weight:700;
  font-size:clamp(1.3rem,2.1vw,1.66rem);line-height:1.45;color:var(--ink);
  margin:2.2em 0 .8em;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.4em;bottom:.3em;width:3px;border-radius:2px;background:var(--coral);
}
.prose h3{
  font-family:"Noto Serif SC",serif;font-weight:700;font-size:1.18rem;line-height:1.5;
  color:var(--ink);margin:1.8em 0 .55em;
}
.prose p{margin:0 0 1.15em}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.35em}
.prose li{margin:.4em 0}
.prose ul li::marker{color:var(--coral)}
.prose ol li::marker{color:var(--gold);font-weight:700}
.prose blockquote{
  margin:1.7em 0;padding:18px 22px;background:rgba(228,87,61,.06);
  border-left:3px solid var(--coral);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:12px;border:1px solid var(--line);margin:1.6em 0}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:.83rem;color:var(--muted);margin-top:.6em;text-align:center}
.prose a{color:var(--ink);border-bottom:1px solid rgba(228,87,61,.55)}
.prose a:hover{color:var(--coral)}
.prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{background:rgba(22,48,43,.05);font-weight:700}
.prose code{background:rgba(22,48,43,.06);padding:2px 6px;border-radius:4px;font-size:.9em}

/* ---------- 目录 ---------- */
.toc-card{
  position:sticky;top:100px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);
}
.toc-title{
  font-size:.76rem;letter-spacing:.18em;color:var(--muted);margin:0 0 12px;font-weight:700;
}
.toc-list{list-style:none;margin:0;padding:0;font-size:.9rem;max-height:60vh;overflow:auto}
.toc-list a{
  display:block;padding:7px 0 7px 14px;border-left:1px solid var(--line);
  color:var(--muted);position:relative;line-height:1.5;
}
.toc-list a:hover{color:var(--ink);border-left-color:rgba(228,87,61,.6)}
.toc-list a.is-current{color:var(--ink);border-left-color:var(--coral);font-weight:600}
.toc-list a.is-current::before{
  content:"";position:absolute;left:-3px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--coral);
}
.toc-list .lvl-3 a{padding-left:26px;font-size:.84rem}
.toc-aside-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted);line-height:1.75;
}

/* ---------- 要点卡 / 安全卡 ---------- */
.note-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:48px 0 0;max-width:820px}
.note-card{
  position:relative;background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 22px;box-shadow:var(--shadow);transition:border-color var(--ease),transform var(--ease);
}
.note-card:hover{border-color:rgba(22,48,43,.3);transform:translateY(-3px)}
.note-card .num{
  font-family:"Noto Serif SC",serif;font-size:.78rem;letter-spacing:.16em;color:var(--gold);font-weight:700;
}
.note-card h3{
  font-family:"Noto Serif SC",serif;font-size:1.12rem;margin:8px 0 10px;font-weight:700;line-height:1.5;
}
.note-card p{margin:0;font-size:.92rem;color:var(--muted);line-height:1.85}
.note-card ul{margin:0;padding-left:1.1em;font-size:.92rem;color:var(--muted);line-height:1.85}
.note-card li{margin:.3em 0}
.note-card--dark{background:var(--ink);border-color:var(--ink);color:var(--sand)}
.note-card--dark h3{color:var(--sand)}
.note-card--dark p,.note-card--dark li{color:rgba(247,242,232,.78)}
.note-card--dark .num{color:var(--coral)}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:640px;padding:44px 34px;background:var(--sand);border:1px dashed rgba(22,48,43,.28);
  border-radius:var(--radius);text-align:left;
}
.empty-state h2{font-family:"Noto Serif SC",serif;font-size:1.35rem;margin:0 0 10px}
.empty-state p{margin:0 0 20px;color:var(--muted);font-size:.95rem}

/* ---------- FAQ ---------- */
.faq-block{margin:64px 0 0;max-width:820px}
.faq-block h2{
  font-family:"Noto Serif SC",serif;font-size:clamp(1.3rem,2.1vw,1.6rem);margin:0 0 8px;line-height:1.4;
}
.faq-block > p{color:var(--muted);font-size:.94rem;margin:0 0 22px}
.faq-item{
  border-bottom:1px solid var(--line);background:transparent;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:20px 0;font-family:"Noto Serif SC",serif;font-weight:700;font-size:1.02rem;line-height:1.6;
  color:var(--ink);transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--coral)}
.faq-item summary .plus{
  flex:none;margin-left:auto;width:18px;height:18px;position:relative;top:6px;transition:transform .22s ease;
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--coral);border-radius:2px;
}
.faq-item summary .plus::before{left:0;top:8px;width:18px;height:1.5px}
.faq-item summary .plus::after{left:8px;top:0;width:1.5px;height:18px;transition:transform .22s ease}
.faq-item[open] summary .plus::after{transform:scaleY(0)}
.faq-item .faq-answer{padding:0 0 22px;font-size:.95rem;color:var(--muted);line-height:1.9;max-width:740px}

/* ---------- 相关推荐 ---------- */
.related-block{margin:72px 0 0}
.related-block h2{font-family:"Noto Serif SC",serif;font-size:clamp(1.3rem,2.1vw,1.6rem);margin:0 0 22px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);height:100%;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(22,48,43,.34);box-shadow:var(--shadow-hover);color:var(--ink)}
.rel-card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-card h3{
  font-family:"Noto Serif SC",serif;font-size:1rem;line-height:1.55;margin:0;font-weight:700;
}
.rel-card p{margin:0;font-size:.86rem;color:var(--muted);line-height:1.7}
.rel-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:10px;font-size:.76rem;color:var(--muted)}

/* ---------- 上下篇 / 返回 ---------- */
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:0;margin:64px 0 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.prevnext a{
  display:flex;flex-direction:column;gap:6px;padding:22px 24px;transition:background var(--ease);
}
.prevnext a + a{border-left:1px solid var(--line)}
.prevnext a:hover{background:var(--sand)}
.prevnext .pn-label{font-size:.76rem;letter-spacing:.14em;color:var(--muted)}
.prevnext .pn-title{font-family:"Noto Serif SC",serif;font-weight:700;font-size:1rem;line-height:1.5}
.prevnext a:last-child{text-align:right;align-items:flex-end}

/* ---------- 文末转化 ---------- */
.article-cta{
  margin:56px 0 0;padding:32px 34px;background:var(--sand);border:1px solid var(--line);
  border-radius:var(--radius);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.article-cta p{margin:0;font-size:.98rem;color:var(--ink);max-width:520px;line-height:1.8}
.article-cta .btn{flex:none}

/* ---------- 编辑说明 ---------- */
.editorial{
  margin:40px 0 0;padding-top:22px;border-top:1px solid var(--line);
  font-size:.8rem;color:var(--muted);line-height:1.85;
}
.editorial span{display:block}
.editorial a{color:var(--muted);border-bottom:1px solid var(--line)}
.editorial a:hover{color:var(--coral);border-bottom-color:var(--coral)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,242,232,.78);padding:76px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
.footer-brand .brand-mark{color:var(--sand);display:block}
.footer-brand .brand-sub{color:rgba(247,242,232,.55);display:block;margin-bottom:16px}
.footer-brand p{margin:0;font-size:.88rem;line-height:1.9;max-width:360px;color:rgba(247,242,232,.66)}
.footer-col h4{
  font-size:.8rem;letter-spacing:.16em;color:var(--sand);margin:0 0 16px;font-weight:700;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:.55em 0}
.footer-col a{color:rgba(247,242,232,.72);font-size:.9rem;border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--coral);border-bottom-color:var(--coral)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:.8rem;color:rgba(247,242,232,.55);
}
.footer-bottom p{margin:0}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .section{padding:84px 0}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:40px}
}
@media (max-width:1023px){
  .nav-desktop{gap:22px}
  .nav-link{font-size:.9rem}
  .article-layout{grid-template-columns:1fr;gap:0}
  .toc-aside{display:none}
  .toc-mobile{display:block;margin:0 0 34px;background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);padding:6px 18px}
  .toc-mobile summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    padding:14px 0;font-family:"Noto Serif SC",serif;font-weight:700;font-size:1rem;
  }
  .toc-mobile summary::-webkit-details-marker{display:none}
  .toc-mobile summary::after{content:"＋";color:var(--coral);font-size:1.1rem}
  .toc-mobile[open] summary::after{content:"－"}
  .toc-mobile .toc-list{border-top:1px solid var(--line);padding:10px 0 14px;max-height:none}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:899px){
  .nav-desktop,.header-cta{display:none}
  .menu-btn{display:flex}
  .header-inner{height:70px}
  .section-head{grid-template-columns:1fr;gap:16px;margin-bottom:34px}
  .article-hero{padding:40px 0 44px}
  .article-hero h1{max-width:none}
  .note-grid{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .prevnext a + a{border-left:0;border-top:1px solid var(--line)}
  .prevnext a:last-child{text-align:left;align-items:flex-start}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .article-main{padding:52px 0 64px}
  .rel-grid{grid-template-columns:1fr}
  .article-cta{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .article-cta .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
  .faq-item summary{font-size:.98rem}
}
@media (max-width:519px){
  .article-hero h1{font-size:1.68rem}
  .article-lead{font-size:15px}
  .prose{font-size:16px}
  .article-meta{gap:8px 16px;font-size:.8rem}
  .btn{padding:.85rem 1.4rem;font-size:.9rem}
  .btn-block{width:100%}
  .drawer-nav a{font-size:1.35rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --coral:#E4573D;
  --ink:#16302B;
  --sand:#F7F2E8;
  --paper:#FFFDF8;
  --gold:#C9A227;
  --muted:#5E6B64;
  --line:rgba(22,48,43,.14);
  --line-dark:rgba(247,242,232,.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 0 rgba(22,48,43,.03),0 14px 30px -22px rgba(22,48,43,.5);
  --shadow-hover:0 22px 44px -26px rgba(22,48,43,.55);
  --maxw:1240px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color var(--ease),border-color var(--ease)}
a:hover{color:var(--coral)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;line-height:1.22;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
time{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--coral);outline-offset:3px;border-radius:4px;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:var(--sand)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.18em;
  color:var(--coral);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--coral);display:inline-block}
.section-head{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;margin-bottom:52px}
.section-head h2{font-size:clamp(1.7rem,2.6vw,2.4rem)}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9}
.section--dark .section-head p{color:rgba(247,242,232,.72)}
.section-head .head-side{border-left:1px solid var(--line);padding-left:28px}
.section--dark .section-head .head-side{border-left-color:var(--line-dark)}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.92rem 1.7rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn .arrow{transition:transform var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--sand)}
.btn-primary:hover{background:var(--coral);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink)}
.section--dark .btn-ghost{border-color:var(--line-dark);color:var(--sand)}
.section--dark .btn-ghost:hover{background:rgba(247,242,232,.08);border-color:var(--sand)}
.btn-text{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.92rem;
  color:var(--coral);border-bottom:1px solid transparent;background:none;
  border-top:0;border-left:0;border-right:0;padding:0;cursor:pointer;
  transition:border-color var(--ease);
}
.btn-text:hover{border-bottom-color:var(--coral)}
.btn-block{width:100%;justify-content:center}
/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:.22rem .7rem;border:1px solid var(--line);border-radius:999px;
  font-size:.74rem;letter-spacing:.06em;color:var(--muted);background:transparent;white-space:nowrap;
}
.badge--coral{border-color:rgba(228,87,61,.45);color:var(--coral)}
.badge--gold{border-color:rgba(201,162,39,.5);color:#9a7c17}
.section--dark .badge{border-color:var(--line-dark);color:rgba(247,242,232,.78)}
/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,242,232,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(22,48,43,.7)}
.header-inner{display:flex;align-items:center;gap:36px;height:78px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:none}
.brand-mark{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.28rem;letter-spacing:.04em}
.brand-sub{font-size:.68rem;letter-spacing:.22em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{position:relative;font-size:.94rem;color:var(--ink);padding:6px 0;font-weight:500}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;right:-11px;bottom:2px;width:4px;height:4px;border-radius:50%;background:var(--coral);
}
.header-cta{margin-left:12px;flex:none}
.text-cta{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--line);
}
.text-cta:hover{border-bottom-color:var(--coral);color:var(--coral)}
.text-cta span{transition:transform var(--ease)}
.text-cta:hover span{transform:translateX(4px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--sand);
  display:flex;flex-direction:column;padding:28px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--ink);padding:6px 10px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:30px 0;flex:1}
.drawer-nav a{
  font-family:"Noto Serif SC",serif;font-size:1.55rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--coral)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}
/* ---------- 分类页头 ---------- */
.cat-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:52px 0 48px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);margin-bottom:26px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--coral)}
.breadcrumb .sep{color:rgba(22,48,43,.32)}
.breadcrumb .current{color:var(--ink)}
.cat-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cat-hero h1{font-size:clamp(1.85rem,3.1vw,2.7rem);line-height:1.22;margin-bottom:18px;max-width:20em}
.cat-hero .lede{color:var(--muted);font-size:15.8px;line-height:1.92;max-width:44em}
.cat-hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:28px}
.cat-hero-side{display:grid;gap:16px}
.cat-figure{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--sand);box-shadow:var(--shadow)}
.cat-figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.mini-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mini-stat{
  background:var(--sand);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;display:flex;flex-direction:column;gap:2px;
}
.mini-stat .num{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.55rem;color:var(--coral);font-variant-numeric:tabular-nums;line-height:1.1}
.mini-stat .lab{font-size:.78rem;color:var(--muted);letter-spacing:.04em}
/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:8px}
.timeline::before{content:"";position:absolute;top:27px;left:26px;right:26px;height:1px;background:var(--line)}
.tl-step{position:relative;padding:0 22px 0 0}
.tl-no{
  position:relative;z-index:1;width:54px;height:54px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;font-weight:700;font-size:.95rem;color:var(--ink);
  transition:background var(--ease),border-color var(--ease),color var(--ease);
}
.tl-step.is-current .tl-no{background:var(--coral);border-color:var(--coral);color:#fff;box-shadow:0 0 0 5px rgba(228,87,61,.12)}
.tl-step h3{font-size:1.08rem;margin:18px 0 8px}
.tl-step p{font-size:.9rem;color:var(--muted);line-height:1.8}
/* ---------- 筛选标签 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{
  border:1px solid var(--line);background:transparent;border-radius:999px;
  padding:.42rem 1.05rem;font-size:.85rem;color:var(--muted);cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:var(--sand)}
/* ---------- 条目卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.entry{
  position:relative;display:grid;grid-template-columns:138px 1fr;gap:18px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.28)}
.entry-thumb{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);background:var(--sand)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.entry-body{min-width:0}
.entry-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.entry-no{
  font-variant-numeric:tabular-nums;font-size:.76rem;font-weight:700;letter-spacing:.08em;
  color:var(--gold);border:1px solid rgba(201,162,39,.5);border-radius:6px;padding:1px 7px;
}
.entry h3{font-size:1.06rem;line-height:1.45;margin-bottom:8px}
.entry p{font-size:.9rem;color:var(--muted);line-height:1.8}
.entry-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:.78rem;color:var(--muted)}
.entry-foot .dot{width:3px;height:3px;border-radius:50%;background:rgba(22,48,43,.28)}
/* ---------- 两列对照 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.compare-col{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px 30px 22px;box-shadow:var(--shadow)}
.compare-col h3{font-size:1.18rem;display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px}
.compare-col h3 .badge{margin-left:auto}
.compare-list li{display:grid;grid-template-columns:88px 1fr;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line)}
.compare-list li:last-child{border-bottom:0}
.compare-list .k{font-size:.84rem;font-weight:700;color:var(--ink);letter-spacing:.02em}
.compare-list .v{font-size:.9rem;color:var(--muted);line-height:1.8}
/* ---------- 深色机制卡 ---------- */
.mech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.mech-card{
  border:1px solid var(--line-dark);border-radius:var(--radius);padding:26px 22px;
  background:rgba(247,242,232,.04);
  transition:background var(--ease),transform var(--ease),border-color var(--ease);
}
.mech-card:hover{background:rgba(247,242,232,.09);border-color:rgba(247,242,232,.34);transform:translateY(-4px)}
.mech-card .no{font-variant-numeric:tabular-nums;font-size:.78rem;color:var(--gold);letter-spacing:.14em;display:block;margin-bottom:14px}
.mech-card h3{font-size:1.05rem;color:var(--sand);margin-bottom:10px}
.mech-card p{font-size:.88rem;color:rgba(247,242,232,.72);line-height:1.8}
.safety-note{
  margin-top:34px;border-left:2px solid var(--coral);background:rgba(247,242,232,.05);
  padding:18px 22px;font-size:.9rem;color:rgba(247,242,232,.8);
}
/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.28)}
.news-card h3{font-size:1.04rem;line-height:1.5}
.news-card h3 a{display:block}
.news-card p{font-size:.88rem;color:var(--muted);line-height:1.8}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:.78rem;color:var(--muted)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);padding:44px 26px;text-align:center;
  color:var(--muted);font-size:.92rem;background:rgba(255,253,248,.6);
}
/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  cursor:pointer;padding:22px 0;list-style:none;
  font-family:"Noto Serif SC",serif;font-weight:700;font-size:1.05rem;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-family:"Noto Sans SC",sans-serif;font-weight:400;
  color:var(--coral);font-size:1.5rem;line-height:1;transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--ink)}
.faq-answer{padding:0 0 24px;color:var(--muted);font-size:.94rem;line-height:1.9;max-width:60em}
/* ---------- 表单与 CTA ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cta-grid h2{font-size:clamp(1.66rem,2.5vw,2.2rem);margin-bottom:18px}
.cta-left p{color:var(--muted);font-size:15.4px;line-height:1.9}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;gap:10px;font-size:.9rem;color:var(--muted)}
.cta-points li::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--coral);margin-top:11px}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-row label{font-size:.84rem;font-weight:600;color:var(--ink);letter-spacing:.02em}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:.78rem .95rem;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--sand);color:var(--ink);font-size:.94rem;font-family:inherit;line-height:1.6;
  transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
  appearance:none;
}
.form-row select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 55%,calc(100% - 14px) 55%;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:var(--ink);background:var(--paper);box-shadow:0 0 0 3px rgba(228,87,61,.12);
}
.form-row.has-error input,.form-row.has-error select{border-color:var(--coral);background:rgba(228,87,61,.05)}
.form-note{font-size:.78rem;color:var(--muted);margin-top:14px;line-height:1.75}
.form-msg{font-size:.86rem;margin-top:12px;color:var(--muted)}
.form-msg.is-ok{color:var(--ink);border:1px solid rgba(22,48,43,.24);border-radius:var(--radius-sm);padding:10px 14px;background:rgba(22,48,43,.04)}
.form-msg.is-err{color:var(--coral)}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--sand);padding:76px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
.footer-brand .brand-mark{color:var(--sand);font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.24rem;display:block}
.footer-brand .brand-sub{color:rgba(247,242,232,.6);font-size:.68rem;letter-spacing:.22em;display:block;margin-top:6px}
.footer-brand p{margin-top:18px;font-size:.88rem;line-height:1.85;color:rgba(247,242,232,.66);max-width:34em}
.footer-col h4{font-size:.82rem;letter-spacing:.16em;color:rgba(247,242,232,.55);font-family:"Noto Sans SC",sans-serif;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:.9rem;color:rgba(247,242,232,.85);border-bottom:1px solid transparent;transition:color var(--ease),border-color var(--ease)}
.footer-col a:hover{color:var(--coral);border-bottom-color:var(--coral)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.78rem;color:rgba(247,242,232,.55);
}
/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.is-in{opacity:1;transform:none;transition:opacity .5s ease,transform .5s ease}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .js .reveal{opacity:1;transform:none}
}
/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .section{padding:88px 0}
  .entry-grid{gap:18px}
  .entry{grid-template-columns:118px 1fr;gap:14px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .header-cta{display:none}
  .menu-btn{display:flex}
  .header-inner{height:70px}
  .section-head{grid-template-columns:1fr;gap:22px;margin-bottom:40px}
  .section-head .head-side{border-left:0;padding-left:0}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px}
  .cat-hero h1{max-width:none}
  .timeline{grid-template-columns:repeat(3,1fr);row-gap:34px}
  .timeline::before{display:none}
  .mech-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:64px 0}
  .entry-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:28px}
  .tl-step{padding:0;display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start}
  .tl-step h3{margin-top:6px}
  .news-grid{grid-template-columns:1fr}
  .mech-grid{grid-template-columns:1fr}
  .cta-grid h2{font-size:1.6rem}
  .form-card{padding:24px}
  .cat-hero{padding:40px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:559px){
  .container{padding:0 18px}
  .cat-hero h1{font-size:1.6rem}
  .mini-stats{grid-template-columns:1fr}
  .entry{grid-template-columns:1fr}
  .entry-thumb img{aspect-ratio:16/9}
  .btn{width:100%;justify-content:center}
  .cat-hero-actions{flex-direction:column;align-items:stretch}
  .cat-hero-actions .btn-text{justify-content:center}
}

/* roulang page: category2 */
:root{
  --coral:#E4573D;
  --ink:#16302B;
  --sand:#F7F2E8;
  --paper:#FFFDF8;
  --gold:#C9A227;
  --muted:#5E6B64;
  --line:rgba(22,48,43,.14);
  --line-dark:rgba(247,242,232,.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 0 rgba(22,48,43,.03),0 14px 30px -22px rgba(22,48,43,.5);
  --shadow-hover:0 22px 44px -26px rgba(22,48,43,.55);
  --maxw:1240px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--coral)}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;line-height:1.22;letter-spacing:.01em}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--coral);outline-offset:3px;border-radius:4px;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:var(--sand)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--coral);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--coral);display:inline-block}
.section-head{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;margin-bottom:52px}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0}
.section--dark .section-head p{color:rgba(247,242,232,.72)}
.section-head--wide{grid-template-columns:1fr;max-width:820px}
.section-title{font-size:clamp(1.8rem,2.6vw,2.45rem);line-height:1.2}
.section--dark .section-title{color:var(--sand)}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.92rem 1.7rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn .arrow{transition:transform var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--sand)}
.btn-primary:hover{background:var(--coral);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink)}
.section--dark .btn-ghost{border-color:var(--line-dark);color:var(--sand)}
.section--dark .btn-ghost:hover{background:rgba(247,242,232,.08);border-color:var(--sand)}
.btn-text{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.95rem;
  color:var(--coral);border-bottom:1px solid transparent;transition:border-color var(--ease);
  background:none;border-top:0;border-left:0;border-right:0;padding:0;cursor:pointer;
}
.btn-text:hover{border-bottom-color:var(--coral)}
.btn-block{width:100%;justify-content:center}
/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:.22rem .7rem;border:1px solid var(--line);border-radius:999px;
  font-size:.74rem;letter-spacing:.06em;color:var(--muted);background:transparent;white-space:nowrap;
}
.badge--coral{border-color:rgba(228,87,61,.45);color:var(--coral)}
.badge--gold{border-color:rgba(201,162,39,.5);color:#9a7c17}
.section--dark .badge{border-color:var(--line-dark);color:rgba(247,242,232,.75)}
/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,242,232,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(22,48,43,.7)}
.header-inner{display:flex;align-items:center;gap:36px;height:78px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:none}
.brand-mark{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.28rem;letter-spacing:.04em}
.brand-sub{font-size:.68rem;letter-spacing:.22em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:.94rem;color:var(--ink);padding:6px 0;font-weight:500;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;right:-11px;bottom:2px;width:4px;height:4px;border-radius:50%;background:var(--coral);
}
.header-cta{margin-left:12px;flex:none}
.text-cta{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--line);
}
.text-cta:hover{border-bottom-color:var(--coral);color:var(--coral)}
.text-cta span{transition:transform var(--ease)}
.text-cta:hover span{transform:translateX(4px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--sand);
  display:flex;flex-direction:column;padding:28px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--ink);padding:6px 10px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:30px 0;flex:1}
.drawer-nav a{
  font-family:"Noto Serif SC",serif;font-size:1.6rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--coral)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}
/* ---------- 分类页头 ---------- */
.cat-head{position:relative;padding:44px 0 58px;background:var(--sand);border-bottom:1px solid var(--line);overflow:hidden}
.cat-head::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/2dab2463f3c40772.webp') center/cover no-repeat;
  opacity:.07;pointer-events:none;
}
.cat-head > .container{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px}
.crumb a:hover{color:var(--coral);border-bottom-color:var(--coral)}
.crumb-sep{color:rgba(22,48,43,.3)}
.crumb span[aria-current]{color:var(--ink);font-weight:600}
.cat-head-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:start}
.cat-head-copy h1{
  font-size:clamp(1.9rem,3.2vw,2.9rem);line-height:1.2;font-weight:900;
  letter-spacing:.01em;max-width:19em;
}
.cat-lead{color:var(--muted);font-size:1rem;line-height:1.9;margin-top:18px;max-width:34em}
.cat-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.cat-side{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.cat-side-figure{margin:0;position:relative;aspect-ratio:3/2;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-side-figure img{width:100%;height:100%;object-fit:cover}
.cat-side-figure::after{
  content:"同城交友";position:absolute;left:14px;bottom:14px;
  background:rgba(22,48,43,.82);color:var(--sand);font-size:.72rem;letter-spacing:.14em;
  padding:.24rem .62rem;border-radius:999px;
}
.cat-side-body{padding:22px 24px 24px}
.cat-side-title{font-size:1.02rem;font-weight:700;letter-spacing:.02em;margin-bottom:14px}
.cat-toc{list-style:none;display:grid;gap:0}
.cat-toc li{
  display:grid;grid-template-columns:26px 1fr;gap:10px;align-items:baseline;
  padding:9px 0;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted);
}
.cat-toc li:first-child{border-top:0}
.cat-toc .num{font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.78rem;color:var(--gold);font-weight:700}
.cat-figures{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.cat-figures strong{
  display:block;font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;
  font-size:1.5rem;line-height:1;color:var(--coral);font-weight:700;
}
.cat-figures span{display:block;font-size:.78rem;color:var(--muted);margin-top:6px;letter-spacing:.04em}
/* ---------- 场景卡阵 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.scene-card{
  grid-column:span 2;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 24px;position:relative;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.3)}
.scene-card:nth-child(1){grid-column:span 4}
.scene-card:nth-child(2){grid-column:span 2}
.scene-card:nth-child(3){grid-column:span 2}
.scene-card:nth-child(4){grid-column:span 4}
.scene-card:nth-child(5){grid-column:span 3}
.scene-card:nth-child(6){grid-column:span 3}
.scene-card::before{
  content:attr(data-index);position:absolute;top:20px;right:22px;
  font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.78rem;
  letter-spacing:.1em;color:var(--gold);font-weight:700;
}
.scene-card h3{font-size:1.18rem;line-height:1.35;padding-right:38px}
.scene-card p{font-size:.92rem;color:var(--muted);line-height:1.85}
.scene-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:6px}
.scene-card--feature{background:linear-gradient(180deg,#FFFDF8 0%,#FBF6EC 100%)}
.scene-thumb{
  margin:-26px -24px 4px;border-bottom:1px solid var(--line);
  border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;aspect-ratio:16/9;
}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene-card:hover .scene-thumb img{transform:scale(1.03)}
/* ---------- 指南列表 ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.guide-item{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 26px 24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.guide-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.3)}
.guide-num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.9rem;font-weight:700;
  color:var(--coral);border-right:1px solid var(--line);padding-right:8px;line-height:1.4;
}
.guide-body h3{font-size:1.08rem;line-height:1.4;margin-bottom:10px}
.guide-body p{font-size:.92rem;color:var(--muted);line-height:1.85}
.guide-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:.76rem;color:var(--muted);letter-spacing:.04em}
.guide-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--coral);display:inline-block}
/* ---------- 前中后对照 ---------- */
.phase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.phase-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);position:relative;
  transition:transform var(--ease),border-color var(--ease);
}
.phase-card:hover{transform:translateY(-4px);border-color:rgba(22,48,43,.3)}
.phase-card .badge{margin-bottom:16px}
.phase-card h3{font-size:1.12rem;margin-bottom:14px}
.phase-list{list-style:none;display:grid;gap:10px}
.phase-list li{
  position:relative;padding-left:20px;font-size:.9rem;color:var(--muted);line-height:1.8;
}
.phase-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:1px;background:var(--coral);
}
/* ---------- 隐私设置（深色） ---------- */
.privacy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.privacy-card{
  border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:26px 22px;background:rgba(247,242,232,.03);
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.privacy-card:hover{background:rgba(247,242,232,.07);border-color:rgba(247,242,232,.34);transform:translateY(-4px)}
.privacy-card h3{font-size:1.02rem;color:var(--sand);margin-bottom:12px}
.privacy-card p{font-size:.88rem;color:rgba(247,242,232,.7);line-height:1.85}
.privacy-note{
  display:inline-block;margin-top:16px;font-size:.74rem;letter-spacing:.08em;
  color:var(--gold);border-top:1px solid var(--line-dark);padding-top:10px;
}
/* ---------- 快速问答 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quick-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease);
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(22,48,43,.3)}
.quick-card::before{content:"问";display:inline-block;font-family:"Noto Serif SC",serif;color:var(--coral);font-size:.85rem;margin-bottom:12px;border:1px solid rgba(228,87,61,.4);border-radius:50%;width:26px;height:26px;line-height:24px;text-align:center}
.quick-card h3{font-size:1.02rem;line-height:1.45;margin-bottom:10px}
.quick-card p{font-size:.9rem;color:var(--muted);line-height:1.85}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:980px}
.faq-item{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 24px;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(22,48,43,.28)}
.faq-item[open]{border-color:rgba(228,87,61,.42);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-family:"Noto Serif SC",serif;font-size:1.04rem;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--coral);border-radius:1px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px;transition:transform var(--ease)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{padding:0 0 22px;border-top:1px solid var(--line);padding-top:16px}
.faq-a p{font-size:.94rem;color:var(--muted);line-height:1.9}
/* ---------- 转化表单 ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cta-copy h2{font-size:clamp(1.7rem,2.5vw,2.3rem);color:var(--sand);line-height:1.25}
.cta-copy p{color:rgba(247,242,232,.72);font-size:.96rem;line-height:1.9;margin-top:18px;max-width:30em}
.cta-points{list-style:none;display:grid;gap:12px;margin-top:26px}
.cta-points li{
  position:relative;padding-left:22px;font-size:.9rem;color:rgba(247,242,232,.8);line-height:1.8;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.78em;width:10px;height:1px;background:var(--gold);
}
.cta-form{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 32px;box-shadow:0 26px 60px -40px rgba(0,0,0,.7);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{
  display:block;font-size:.82rem;font-weight:600;letter-spacing:.04em;margin-bottom:8px;color:var(--ink);
}
.field .req{color:var(--coral);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:.78rem .9rem;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--sand);color:var(--ink);font-size:.93rem;font-family:inherit;line-height:1.6;
  transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
  appearance:none;
}
.field textarea{resize:vertical;min-height:96px}
.field input::placeholder,.field textarea::placeholder{color:rgba(94,107,100,.75)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--coral);background:var(--paper);box-shadow:0 0 0 3px rgba(228,87,61,.12);outline:none;
}
.field.has-error input,.field.has-error select{border-color:var(--coral);background:rgba(228,87,61,.05)}
.field-error{display:none;font-size:.78rem;color:var(--coral);margin-top:6px}
.field.has-error .field-error{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 22px}
.check-row input{width:17px;height:17px;margin-top:3px;accent-color:var(--coral);flex:none}
.check-row label{font-size:.84rem;color:var(--muted);line-height:1.7;margin:0}
.form-note{
  display:none;margin-top:18px;padding:12px 14px;border-radius:var(--radius-sm);
  font-size:.86rem;border:1px solid rgba(228,87,61,.45);color:var(--coral);background:rgba(228,87,61,.06);
}
.form-note.is-visible{display:block}
.form-note.is-success{border-color:rgba(22,48,43,.35);color:var(--ink);background:rgba(22,48,43,.05)}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--sand);padding:84px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand-mark{color:var(--sand);font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.3rem;letter-spacing:.04em}
.footer-brand .brand-sub{color:rgba(247,242,232,.55);font-size:.68rem;letter-spacing:.22em;margin-top:5px;display:block}
.footer-brand p{color:rgba(247,242,232,.64);font-size:.88rem;line-height:1.9;margin-top:20px;max-width:34em}
.footer-col h4{
  font-family:"Noto Sans SC",sans-serif;font-size:.8rem;letter-spacing:.16em;
  color:var(--gold);margin:0 0 18px;font-weight:700;
}
.footer-col ul{list-style:none;display:grid;gap:11px}
.footer-col a{color:rgba(247,242,232,.74);font-size:.89rem;border-bottom:1px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:var(--coral);border-bottom-color:var(--coral)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.8rem;color:rgba(247,242,232,.52);
}
/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .js .reveal{opacity:1;transform:none}
}
/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .container{padding:0 24px}
  .header-inner{gap:24px}
  .nav-desktop{gap:22px}
  .cat-head-grid{gap:36px}
  .privacy-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{gap:38px}
}
@media (max-width:1024px){
  body{font-size:16px}
  .section{padding:84px 0}
  .section-head{grid-template-columns:1fr;gap:18px;margin-bottom:40px}
  .cat-head-grid{grid-template-columns:1fr;gap:30px}
  .cat-head-copy h1{max-width:none}
  .cat-side{max-width:560px}
  .guide-grid{grid-template-columns:1fr}
  .phase-grid{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .nav-desktop,.header-cta{display:none}
  .menu-btn{display:flex}
  .header-inner{height:70px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .scene-card,.scene-card:nth-child(n){grid-column:span 1}
  .scene-card:nth-child(1),.scene-card:nth-child(2){grid-column:span 2}
}
@media (max-width:768px){
  .section{padding:68px 0}
  .cat-head{padding:32px 0 46px}
  .scene-grid{grid-template-columns:1fr;gap:18px}
  .scene-card,.scene-card:nth-child(n){grid-column:span 1}
  .guide-item{grid-template-columns:1fr;gap:12px;padding:22px}
  .guide-num{border-right:0;border-bottom:1px solid var(--line);padding:0 0 8px;width:44px}
  .privacy-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr;gap:0}
  .cta-form{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .section{padding:56px 0}
  .cat-head-copy h1{font-size:1.72rem}
  .cat-lead{font-size:.94rem}
  .btn{width:100%;justify-content:center}
  .btn-text{width:auto}
  .drawer{padding:22px}
  .drawer-nav a{font-size:1.35rem}
  .faq-item{padding:0 18px}
  .faq-item summary{font-size:.98rem;gap:14px}
}

/* roulang page: category3 */
:root{
  --coral:#E4573D;
  --ink:#16302B;
  --sand:#F7F2E8;
  --paper:#FFFDF8;
  --gold:#C9A227;
  --muted:#5E6B64;
  --line:rgba(22,48,43,.14);
  --line-dark:rgba(247,242,232,.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 0 rgba(22,48,43,.03),0 14px 30px -22px rgba(22,48,43,.5);
  --shadow-hover:0 22px 44px -26px rgba(22,48,43,.55);
  --maxw:1240px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--coral)}
button{font-family:inherit}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;line-height:1.24;color:var(--ink)}
ul,ol{margin:0;padding:0}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--coral);outline-offset:3px;border-radius:4px;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:var(--sand)}
.section--line{border-top:1px solid var(--line)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--coral);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--coral);display:inline-block}
.section-head{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;margin-bottom:52px}
.section-head h2{font-size:clamp(1.8rem,2.6vw,2.5rem);letter-spacing:.01em}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0}
.section--dark .section-head p{color:rgba(247,242,232,.72)}
.section-head--wide{grid-template-columns:1fr;max-width:820px}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.92rem 1.7rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn .arrow{transition:transform var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--sand)}
.btn-primary:hover{background:var(--coral);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink)}
.section--dark .btn-ghost{border-color:var(--line-dark);color:var(--sand)}
.section--dark .btn-ghost:hover{background:rgba(247,242,232,.08);border-color:var(--sand)}
.btn-text{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.95rem;
  color:var(--coral);border-bottom:1px solid transparent;transition:border-color var(--ease);
  background:none;border-top:0;border-left:0;border-right:0;padding:0;cursor:pointer;
}
.btn-text:hover{border-bottom-color:var(--coral)}
.btn-block{width:100%;justify-content:center}
.link-arrow{display:inline-flex;align-items:center;gap:.35rem;font-size:.9rem;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px}
.link-arrow:hover{color:var(--coral);border-bottom-color:var(--coral)}
/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:.22rem .7rem;border:1px solid var(--line);border-radius:999px;
  font-size:.74rem;letter-spacing:.06em;color:var(--muted);background:transparent;white-space:nowrap;
}
.badge--coral{border-color:rgba(228,87,61,.45);color:var(--coral)}
.badge--gold{border-color:rgba(201,162,39,.5);color:#9a7c17}
.section--dark .badge{border-color:var(--line-dark);color:rgba(247,242,232,.75)}
/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,242,232,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(22,48,43,.7)}
.header-inner{display:flex;align-items:center;gap:36px;height:78px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:none}
.brand-mark{font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.28rem;letter-spacing:.04em;color:var(--ink)}
.brand-sub{font-size:.68rem;letter-spacing:.22em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:.94rem;color:var(--ink);padding:6px 0;font-weight:500;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;right:-11px;bottom:2px;width:4px;height:4px;border-radius:50%;background:var(--coral);
}
.header-cta{margin-left:12px;flex:none}
.text-cta{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--line);
}
.text-cta:hover{border-bottom-color:var(--coral);color:var(--coral)}
.text-cta span{transition:transform var(--ease)}
.text-cta:hover span{transform:translateX(4px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--sand);
  display:flex;flex-direction:column;padding:28px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--ink);padding:6px 10px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:30px 0;flex:1}
.drawer-nav a{
  font-family:"Noto Serif SC",serif;font-size:1.6rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--coral)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}
/* ---------- 分类页头 ---------- */
.cat-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:52px 0 60px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.82rem;color:var(--muted);margin-bottom:26px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--coral)}
.crumb span.sep{opacity:.5}
.cat-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cat-hero h1{font-size:clamp(2rem,3.1vw,2.9rem);line-height:1.18;letter-spacing:.01em;margin-bottom:18px}
.cat-hero h1 em{font-style:normal;color:var(--coral)}
.cat-lead{color:var(--muted);font-size:16px;max-width:36em;margin-bottom:26px}
.cat-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.cat-figure{position:relative}
.cat-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow)}
.cat-figure .fig-tag{
  position:absolute;left:16px;top:16px;background:rgba(255,253,248,.94);
  border:1px solid var(--line);border-radius:999px;padding:.25rem .75rem;font-size:.74rem;letter-spacing:.08em;color:var(--ink);
}
.mini-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.mini-stat{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.mini-stat strong{display:block;font-family:"Noto Serif SC",serif;font-size:1.45rem;line-height:1.2;color:var(--ink);font-variant-numeric:tabular-nums}
.mini-stat span{font-size:.78rem;color:var(--muted);letter-spacing:.04em}
/* ---------- 功能卡牌矩阵 ---------- */
.func-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.func-card{
  position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  grid-column:span 4;
}
.func-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.32)}
.func-card::before{content:"";position:absolute;left:0;top:24px;width:3px;height:26px;background:var(--coral);border-radius:0 3px 3px 0;opacity:.85}
.func-card .card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.card-num{font-family:"Noto Serif SC",serif;font-size:.86rem;letter-spacing:.14em;color:var(--gold);font-variant-numeric:tabular-nums}
.func-card h3{font-size:1.18rem;margin-bottom:10px}
.func-card p{font-size:.94rem;color:var(--muted);line-height:1.8;margin:0}
.func-card:nth-child(1){grid-column:span 7}
.func-card:nth-child(2){grid-column:span 5}
.func-card:nth-child(3),.func-card:nth-child(4),.func-card:nth-child(5){grid-column:span 4}
.func-card:nth-child(6){grid-column:span 5}
.func-card:nth-child(7){grid-column:span 7}
/* ---------- 功能对照 ---------- */
.compare-list{display:flex;flex-direction:column;gap:16px}
.compare-row{
  display:grid;grid-template-columns:3fr 9fr;gap:34px;align-items:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 30px;transition:border-color var(--ease),box-shadow var(--ease);
}
.compare-row:hover{border-color:rgba(22,48,43,.3);box-shadow:var(--shadow)}
.compare-row h3{font-size:1.2rem;margin-bottom:6px}
.compare-row .cmp-note{font-size:.86rem;color:var(--muted);margin:0}
.cmp-body{display:flex;flex-direction:column;gap:10px}
.cmp-items{display:flex;flex-wrap:wrap;gap:10px}
.cmp-items .chip{
  font-size:.82rem;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:.2rem .7rem;background:var(--sand);
}
.bar{position:relative;height:4px;border-radius:999px;background:rgba(22,48,43,.1);overflow:hidden}
.bar::after{content:"";position:absolute;inset:0 auto 0 0;width:var(--w,60%);background:var(--coral);border-radius:999px}
.bar-label{font-size:.78rem;color:var(--muted);letter-spacing:.04em}
/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{
  background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;
  transition:transform var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(22,48,43,.3)}
.step .step-num{font-family:"Noto Serif SC",serif;font-size:1.5rem;color:var(--coral);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:14px}
.step h3{font-size:1.06rem;margin-bottom:8px}
.step p{font-size:.9rem;color:var(--muted);margin:0;line-height:1.8}
/* ---------- 内容列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,48,43,.32)}
.post-media{display:block;overflow:hidden}
.post-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 240ms ease}
.post-card:hover .post-media img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.78rem;color:var(--muted)}
.post-meta time{font-variant-numeric:tabular-nums}
.post-body h3{font-size:1.06rem;line-height:1.5}
.post-body h3 a{color:var(--ink)}
.post-body h3 a:hover{color:var(--coral)}
.post-body p{font-size:.9rem;color:var(--muted);margin:0;line-height:1.8}
.post-body .link-arrow{margin-top:auto;align-self:flex-start}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--paper);
  padding:44px 28px;text-align:center;color:var(--muted);font-size:.95rem;
}
.empty-state strong{display:block;font-family:"Noto Serif SC",serif;color:var(--ink);font-size:1.05rem;margin-bottom:6px}
/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 24px;margin-bottom:14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(22,48,43,.3)}
.faq-item[open]{box-shadow:var(--shadow);border-color:rgba(22,48,43,.3)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:20px;
  padding:22px 0;font-family:"Noto Serif SC",serif;font-size:1.06rem;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";margin-left:auto;font-family:"Noto Sans SC",sans-serif;font-size:1.35rem;line-height:1;
  color:var(--coral);transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 0 22px;color:var(--muted);font-size:.96rem;line-height:1.9;max-width:62em}
/* ---------- 转化 CTA ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cta-copy h2{font-size:clamp(1.7rem,2.4vw,2.3rem);margin-bottom:16px}
.cta-copy p{color:rgba(247,242,232,.74);font-size:15.5px;max-width:30em}
.cta-points{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:12px;align-items:baseline;font-size:.94rem;color:rgba(247,242,232,.82)}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--coral);flex:none;transform:translateY(-2px)}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:30px 30px 28px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1/-1}
.field label{font-size:.84rem;font-weight:600;color:var(--ink);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;padding:.78rem .9rem;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--sand);color:var(--ink);font-size:.94rem;font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.8}
.field input:focus,.field select:focus,.field textarea:focus{
  background:var(--paper);border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(22,48,43,.08);
}
.field.has-error input,.field.has-error select{border-color:var(--coral);background:rgba(228,87,61,.05)}
.field .err{font-size:.76rem;color:var(--coral);display:none}
.field.has-error .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:.84rem;color:var(--muted);grid-column:1/-1}
.check-row input{width:16px;height:16px;margin-top:4px;flex:none;accent-color:var(--ink)}
.form-note{font-size:.78rem;color:var(--muted);grid-column:1/-1;margin:0}
.form-result{
  display:none;margin-top:16px;padding:12px 14px;border:1px solid rgba(22,48,43,.35);
  border-radius:var(--radius-sm);background:rgba(22,48,43,.05);font-size:.88rem;color:var(--ink);
}
.form-result.is-visible{display:block}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--sand);padding:84px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand-mark{color:var(--sand);display:block}
.footer-brand .brand-sub{color:rgba(247,242,232,.55);display:block}
.footer-brand p{color:rgba(247,242,232,.68);font-size:.92rem;line-height:1.85;margin-top:16px;max-width:34em}
.footer-col h4{font-size:.95rem;letter-spacing:.08em;color:var(--sand);margin-bottom:16px;font-family:"Noto Serif SC",serif}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(247,242,232,.7);font-size:.9rem}
.footer-col a:hover{color:var(--coral)}
.footer-bottom{
  border-top:1px solid var(--line-dark);margin-top:58px;padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:.8rem;color:rgba(247,242,232,.52)}
/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}
/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .container{padding:0 22px}
  .section{padding:84px 0}
  .section-head{grid-template-columns:1fr;gap:18px;align-items:start;margin-bottom:40px}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px}
  .cat-hero{padding:44px 0 52px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .func-card:nth-child(n){grid-column:span 6}
  .post-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav-desktop,.header-cta{display:none}
  .menu-btn{display:inline-flex}
  .header-inner{height:70px}
  .compare-row{grid-template-columns:1fr;gap:18px;padding:22px 22px}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .func-card:nth-child(n){grid-column:span 12}
  .post-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .mini-stats{grid-template-columns:1fr 1fr}
  .cat-hero h1{font-size:1.9rem}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .brand-mark{font-size:1.14rem}
  .brand-sub{letter-spacing:.16em;font-size:.62rem}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .form-card{padding:22px 20px}
  .cat-actions .btn{width:100%;justify-content:center}
  .drawer-nav a{font-size:1.4rem}
}
@media (max-width:520px){
  body{font-size:16px}
  .cat-hero h1{font-size:1.68rem}
  .section-head h2{font-size:1.6rem}
  .func-card{padding:22px 20px}
  .footer-bottom{flex-direction:column}
}