/* roulang page: index */
/* ============ 1. 设计变量 ============ */
:root{
  --ink:#101215;
  --ink-2:#2A2D31;
  --muted:#6E7176;
  --paper:#F7F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#EDEAE4;
  --line:#E3E0D9;
  --accent:#FF4A1C;
  --accent-deep:#E63F12;
  --accent-2:#0F6E5C;
  --radius:2px;
  --shadow-s:0 1px 2px rgba(16,18,21,.06);
  --shadow-h:0 12px 28px -12px rgba(16,18,21,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ 2. Reset & 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:none}
ul,ol,li{list-style:none;margin:0;padding:0}
figure,blockquote,p,h1,h2,h3,h4{margin:0}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;line-height:1.16}
h1{font-size:clamp(34px,6vw,68px)}
h2{font-size:clamp(24px,3vw,38px)}
h3{font-size:19px;line-height:1.4}
p{color:var(--ink-2)}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 2px rgba(255,74,28,.18)}

/* ============ 3. 布局 ============ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section.no-line{border-top:none}
.section-inverse{background:var(--ink);color:var(--paper);border-top:none}
.section-inverse h2,.section-inverse h3{color:var(--paper)}
.section-inverse p{color:rgba(247,245,241,.72)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:48px;margin-bottom:48px}
.sec-head-l{max-width:720px}
.sec-head-r{max-width:420px;font-size:14px;color:var(--muted);line-height:1.8;padding-bottom:4px}
.kicker{
  display:inline-block;font-family:var(--font-num);font-size:12px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:14px;
}
.sec-head h2{position:relative;display:inline-block;padding-bottom:12px}
.sec-head h2::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--accent);transition:width .24s ease-out;
}
.sec-head h2:hover::after{width:100%}
.lead{font-size:16px;line-height:1.8;color:var(--ink-2)}
.muted{color:var(--muted);font-size:14px}

/* ============ 4. 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1.4;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);box-shadow:var(--shadow-h)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{border-color:rgba(247,245,241,.5);color:var(--paper)}
.btn-ghost:hover{background:rgba(247,245,241,.1);border-color:var(--paper)}
.btn-line{border-color:var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--paper)}
.btn-soft{border-color:var(--line);background:var(--paper-2);color:var(--ink)}
.btn-soft:hover{border-color:var(--ink)}
.chip{
  display:inline-flex;align-items:center;border-radius:999px;padding:3px 12px;
  font-size:13px;line-height:1.6;border:1px solid var(--accent);color:var(--accent);background:transparent;
}
.chip-cat{border-color:var(--accent-2);color:var(--accent-2)}
.chip-plain{border-color:var(--line);color:var(--muted);background:var(--paper-2)}

/* ============ 5. 头部与导航 ============ */
.topbar{background:var(--ink);color:rgba(247,245,241,.78);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:32px}
.topbar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .topbar-mid{color:rgba(247,245,241,.55)}
.site-header{
  position:sticky;top:0;z-index:70;background:var(--paper-2);
  border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-s)}
.nav{position:relative}
.nav-inner{display:flex;align-items:center;height:68px;gap:40px}
.logo{
  font-family:var(--font-serif);font-weight:700;font-size:19px;letter-spacing:-.01em;
  border:1px solid var(--ink);padding:6px 12px;border-radius:var(--radius);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.logo:hover{background:var(--ink);color:var(--paper)}
.nav-list{display:flex;align-items:center;gap:30px;height:68px;margin-left:8px}
.nav-item{position:relative;height:100%;display:flex;align-items:center}
.nav-item > a{
  display:inline-flex;align-items:center;height:100%;font-size:15px;color:var(--ink-2);
  position:relative;transition:color .18s var(--ease);
}
.nav-item > a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-item > a:hover{color:var(--ink)}
.nav-item > a:hover::after{transform:scaleX(1)}
.nav-item.active > a{color:var(--ink);font-weight:500}
.nav-item.active > a::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{
  display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);
  border-radius:var(--radius);padding:8px 14px;font-size:14px;color:var(--muted);
  background:var(--paper);transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-search:hover{border-color:var(--ink);color:var(--ink)}
.mega{
  position:absolute;top:100%;right:0;width:720px;background:var(--paper-2);
  border:1px solid var(--line);padding:24px;
  display:grid;grid-template-columns:1fr 1fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:80;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega h4{font-size:14px;font-family:var(--font-sans);font-weight:700;letter-spacing:.04em;color:var(--muted);margin-bottom:14px}
.mega ul li{margin-bottom:2px}
.mega ul li a{
  display:flex;align-items:center;gap:10px;font-size:14px;padding:7px 8px;border-radius:var(--radius);
  color:var(--ink-2);transition:background .16s var(--ease),color .16s var(--ease);
}
.mega ul li a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent-2);flex:none}
.mega ul li a:hover{background:var(--paper);color:var(--ink)}
.mega-card{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:10px}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.mega-card span{display:block;font-size:13px;padding:10px 12px;color:var(--ink-2)}
.burger{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius)}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.mobile-drawer{
  position:fixed;inset:0;background:var(--ink);color:var(--paper);z-index:90;
  padding:28px 24px 40px;transform:translateX(100%);
  transition:transform .28s var(--ease);overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.mobile-drawer .drawer-logo{border:1px solid rgba(247,245,241,.6);padding:6px 12px;font-family:var(--font-serif);font-weight:700}
.mobile-drawer .drawer-close{font-size:26px;line-height:1;color:var(--paper)}
.mobile-drawer nav a{display:block;padding:16px 0;border-bottom:1px solid rgba(247,245,241,.14);font-size:16px}
.mobile-drawer nav a.active{color:var(--accent)}

/* ============ 6. Hero ============ */
.hero{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;padding:112px 0 96px}
.hero-media{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.3;transform:scale(1.02);
}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,21,.72),rgba(16,18,21,.9))}
.hero-inner{position:relative;text-align:center;max-width:900px;margin:0 auto}
.hero-kicker{
  display:inline-block;font-size:13px;letter-spacing:.1em;color:var(--accent);
  border:1px solid rgba(255,74,28,.5);border-radius:999px;padding:5px 16px;margin-bottom:26px;
}
.hero-title{color:var(--paper);margin-bottom:24px}
.hero-lead{font-size:16px;line-height:1.85;color:rgba(247,245,241,.76);max-width:760px;margin:0 auto 36px}
.hero-search{
  display:flex;align-items:center;gap:8px;max-width:640px;margin:0 auto;
  background:var(--paper-2);border-radius:var(--radius);padding:8px;box-shadow:var(--shadow-h);
}
.hero-search input{
  flex:1;min-width:0;border:none;background:transparent;padding:12px 14px;font-size:15px;color:var(--ink);outline:none;
}
.hero-search input::placeholder{color:var(--muted)}
.hero-search .btn{flex:none;padding:12px 22px}
.hero-quick{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:28px}
.hero-quick-label{font-size:13px;color:rgba(247,245,241,.55);margin-right:4px}
.hero-quick a{
  font-size:13px;padding:5px 14px;border-radius:999px;border:1px solid rgba(247,245,241,.28);
  color:rgba(247,245,241,.86);transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.hero-quick a:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,74,28,.08)}

/* ============ 7. 快讯带 ============ */
.newsline{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2)}
.newsline-inner{display:flex;align-items:center;gap:24px;padding:14px 0}
.newsline-tag{
  flex:none;font-size:13px;font-weight:500;color:var(--accent);border:1px solid var(--accent);
  border-radius:999px;padding:3px 14px;
}
.newsline-track{display:flex;gap:36px;overflow-x:auto;scrollbar-width:none;padding:6px 0}
.newsline-track::-webkit-scrollbar{display:none}
.newsline-track a{
  display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);
  white-space:nowrap;transition:color .18s var(--ease);
}
.newsline-track a:hover{color:var(--accent)}
.newsline-track time{font-family:var(--font-num);font-size:13px;color:var(--muted)}
.newsline-track .nl-cat{font-size:12px;color:var(--accent-2);border:1px solid var(--line);border-radius:999px;padding:1px 9px}

/* ============ 8. 问题陈述 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.pain-item{background:var(--paper-2);padding:32px;transition:background .2s var(--ease)}
.pain-item:hover{background:#fff}
.pain-no{font-family:var(--font-num);font-size:13px;color:var(--accent);letter-spacing:.08em;display:block;margin-bottom:14px}
.pain-item h3{margin-bottom:10px}
.pain-item p{font-size:15px;line-height:1.8}

/* ============ 9. 操作演示 ============ */
.demo-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.demo-figure{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-3)}
.demo-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.demo-figure figcaption{font-size:13px;color:var(--muted);padding:14px 18px;background:var(--paper-2);border-top:1px solid var(--line)}
.demo-steps li{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.demo-steps li:first-child{padding-top:0}
.demo-num{font-family:var(--font-num);font-size:15px;font-weight:500;color:var(--accent);padding-top:3px}
.demo-steps h3{margin-bottom:8px}
.demo-steps p{font-size:15px;line-height:1.8}

/* ============ 10. 结果预览 ============ */
.preview-wrap{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.preview-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.preview-figure figcaption{font-size:13px;color:var(--muted);margin-top:12px}
.preview-list li{padding:18px 0;border-bottom:1px solid var(--line)}
.preview-list li:first-child{padding-top:0}
.preview-list strong{display:block;font-family:var(--font-serif);font-size:17px;margin-bottom:6px}
.preview-list span{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 11. 常见卡住点 ============ */
.stuck-list{border-top:1px solid var(--line)}
.stuck-item{
  display:grid;grid-template-columns:5fr 7fr;gap:32px;padding:26px 0;border-bottom:1px solid var(--line);
  position:relative;padding-left:20px;transition:background .2s var(--ease);
}
.stuck-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);
  transform:scaleY(0);transition:transform .2s var(--ease);
}
.stuck-item:hover{background:var(--paper-2)}
.stuck-item:hover::before{transform:scaleY(1)}
.stuck-item h3{font-size:17px}
.stuck-item p{font-size:15px;line-height:1.8}

/* ============ 12. 成功路径 / 平台 ============ */
.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.path-item{padding:34px 24px 30px;border-right:1px solid var(--line);position:relative}
.path-item:last-child{border-right:none}
.path-item:first-child{padding-left:0}
.path-no{font-family:var(--font-serif);font-size:38px;line-height:1;color:var(--paper-3);display:block;margin-bottom:18px;transition:color .2s var(--ease)}
.path-item:hover .path-no{color:var(--accent)}
.path-item h3{margin-bottom:10px}
.path-item p{font-size:14px;line-height:1.8}

/* ============ 13. 资源矩阵 ============ */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.m-card{
  grid-column:span 6;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.m-card.small{grid-column:span 3}
.m-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px);border-color:#D6D2C8}
.m-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .24s var(--ease)}
.m-card:hover img{transform:scale(1.04)}
.m-card .m-media{overflow:hidden;background:var(--paper-3)}
.m-card .m-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.m-card h3{font-size:18px}
.m-card p{font-size:14px;line-height:1.75;color:var(--muted);flex:1}
.m-arrow{font-family:var(--font-num);font-size:13px;color:var(--accent);letter-spacing:.06em}

/* ============ 14. 优势数据 ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.stat{padding:36px 28px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat:first-child{padding-left:0}
.stat b{display:block;font-family:var(--font-serif);font-size:clamp(32px,4vw,52px);line-height:1;color:var(--ink);font-weight:700}
.stat b em{font-style:normal;font-size:.42em;color:var(--accent);margin-left:6px;font-family:var(--font-sans);font-weight:500}
.stat span{display:block;margin-top:14px;font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 15. 版本对比表 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2)}
.ver-table{width:100%;border-collapse:collapse;min-width:720px}
.ver-table th,.ver-table td{text-align:left;padding:18px 22px;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top}
.ver-table th{background:var(--paper-3);font-family:var(--font-sans);font-weight:700;font-size:14px;color:var(--ink-2);white-space:nowrap}
.ver-table tbody tr:last-child td{border-bottom:none}
.ver-table tbody tr:hover{background:var(--paper)}
.ver-table td:first-child{font-family:var(--font-serif);font-weight:700;color:var(--ink);white-space:nowrap}
.ver-table td{color:var(--ink-2);line-height:1.75}

/* ============ 16. 案例墙 ============ */
.case-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.case{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:block;transition:box-shadow .22s var(--ease),transform .22s var(--ease)}
.case:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.case-main{grid-column:span 6;grid-row:span 2}
.case-small{grid-column:span 3}
.case-small.offset{margin-top:24px}
.case .c-media{overflow:hidden;background:var(--paper-3)}
.case img{width:100%;object-fit:cover;border-radius:0;transition:transform .24s var(--ease)}
.case-main img{aspect-ratio:16/11}
.case-small img{aspect-ratio:4/3}
.case:hover img{transform:scale(1.04)}
.case-body{padding:20px}
.case-body h3{font-size:17px;margin:10px 0 8px}
.case-main .case-body h3{font-size:22px}
.case-body p{font-size:14px;line-height:1.75;color:var(--muted)}

/* ============ 17. 资讯列表 ============ */
.news-layout{display:grid;grid-template-columns:8fr 4fr;gap:56px;align-items:start}
.news-list{border-top:1px solid var(--line)}
.news-item{
  display:grid;grid-template-columns:180px 1fr;gap:24px;padding:24px 16px;
  border-bottom:1px solid var(--line);position:relative;transition:background .2s var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);
  transform:scaleY(0);transition:transform .2s var(--ease);
}
.news-item:hover{background:var(--paper-2)}
.news-item:hover::before{transform:scaleY(1)}
.news-item img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--paper-3)}
.news-item h3{font-size:18px;margin-bottom:8px;transition:color .18s var(--ease)}
.news-item:hover h3{color:var(--accent)}
.news-item p{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:12px}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted)}
.news-meta time{font-family:var(--font-num)}
.side-block{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);padding:24px;margin-bottom:24px}
.side-block h3{font-size:16px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.rank-list li{display:flex;gap:14px;padding:11px 0;font-size:14px;line-height:1.6;color:var(--ink-2);transition:color .18s var(--ease)}
.rank-list li:hover{color:var(--accent)}
.rank-list .rk{font-family:var(--font-num);font-size:13px;color:var(--accent-2);flex:none;width:18px}
.rank-list .rk.top{color:var(--accent);font-weight:700}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{
  border:1px solid var(--line);border-radius:999px;padding:4px 13px;font-size:13px;color:var(--ink-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.tag-cloud a:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,74,28,.05)}
.tag-cloud a.big{font-size:15px;font-weight:500}
.tag-cloud a.mid{font-size:14px}

/* ============ 18. 专题精选 ============ */
.feature-layout{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:stretch}
.feature-main{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--ink)}
.feature-main img{width:100%;height:100%;min-height:360px;aspect-ratio:16/10;object-fit:cover;opacity:.78;border-radius:0;transition:opacity .24s var(--ease),transform .24s var(--ease)}
.feature-main:hover img{opacity:.9;transform:scale(1.03)}
.feature-cap{position:absolute;left:0;right:0;bottom:0;padding:28px;background:linear-gradient(180deg,rgba(16,18,21,0),rgba(16,18,21,.88))}
.feature-cap h3{color:var(--paper);font-size:22px;margin-bottom:8px}
.feature-cap p{color:rgba(247,245,241,.72);font-size:14px}
.feature-side{display:flex;flex-direction:column;justify-content:space-between;gap:20px}
.feature-side li{border-bottom:1px solid var(--line);padding-bottom:20px}
.feature-side li:last-child{border-bottom:none;padding-bottom:0}
.feature-side h3{font-size:17px;margin-bottom:8px;transition:color .18s var(--ease)}
.feature-side li:hover h3{color:var(--accent)}
.feature-side p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ 19. FAQ ============ */
.faq{border-top:1px solid var(--line)}
.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:24px;
  padding:24px 4px;font-family:var(--font-serif);font-size:18px;font-weight:700;line-height:1.5;
  transition:color .18s var(--ease),padding-left .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent);padding-left:12px}
.faq-sign{flex:none;width:22px;height:22px;position:relative}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--accent);transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-sign::before{left:0;top:10px;width:22px;height:2px}
.faq-sign::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 4px 26px;max-width:900px}
.faq-body p{font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ 20. 保障条 ============ */
.guard{background:var(--ink);color:var(--paper);padding:40px 0}
.guard-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.guard-lead{font-family:var(--font-serif);font-size:clamp(18px,2vw,24px);font-weight:700;max-width:520px;line-height:1.5;color:var(--paper)}
.guard-points{display:flex;gap:0;flex-wrap:wrap}
.guard-points span{
  font-size:14px;color:rgba(247,245,241,.8);padding:0 26px;border-right:1px solid rgba(247,245,241,.18);
}
.guard-points span:last-child{border-right:none}
.guard-points span:first-child{padding-left:0}

/* ============ 21. 联系 / 表单 ============ */
.contact-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-info h2{margin-bottom:20px}
.contact-info p{font-size:15px;line-height:1.85;margin-bottom:24px}
.contact-facts li{padding:14px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted);display:flex;gap:14px}
.contact-facts li b{color:var(--ink);font-family:var(--font-serif);font-weight:700;flex:none;width:96px}
.form-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:32px;position:relative;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);
  padding:12px 14px;font-size:15px;color:var(--ink);outline:none;
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);background:var(--paper-2);box-shadow:0 0 0 2px rgba(255,74,28,.14);
}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:13px;color:var(--muted);margin-top:14px}
.toast{
  position:absolute;left:32px;right:32px;bottom:32px;background:var(--ink);color:var(--paper);
  font-size:14px;padding:14px 18px;border-radius:var(--radius);opacity:0;transform:translateY(8px);
  pointer-events:none;transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.toast.show{opacity:1;transform:translateY(0)}

/* ============ 22. 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(247,245,241,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;padding-bottom:56px}
.footer-col h4{font-family:var(--font-sans);font-size:14px;font-weight:700;color:var(--paper);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:2px}
.footer-col a{font-size:13px;line-height:2;color:rgba(247,245,241,.66);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--accent);text-decoration:underline}
.footer-sub p{font-size:13px;line-height:1.9;color:rgba(247,245,241,.6);margin-bottom:16px}
.footer-sub form{display:flex;gap:8px}
.footer-sub input{
  flex:1;min-width:0;background:transparent;border:1px solid rgba(247,245,241,.24);
  border-radius:var(--radius);padding:10px 12px;font-size:13px;color:var(--paper);outline:none;
}
.footer-sub input::placeholder{color:rgba(247,245,241,.4)}
.footer-sub input:focus{border-color:var(--accent)}
.footer-sub button{
  border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:var(--radius);
  padding:10px 16px;font-size:13px;transition:background .18s var(--ease);
}
.footer-sub button:hover{background:var(--accent-deep)}
.footer-bottom{
  border-top:1px solid rgba(247,245,241,.14);padding:22px 0;font-size:13px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom nav{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom a{color:rgba(247,245,241,.62)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 23. 进场动效 ============ */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ============ 24. 响应式 ============ */
@media (max-width:1279px){
  .m-card.small{grid-column:span 6}
  .case-main{grid-column:span 12;grid-row:auto}
  .case-small{grid-column:span 6}
  .case-small.offset{margin-top:0}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-list,.nav-actions .nav-search{display:none}
  .burger{display:inline-flex;margin-left:auto}
  .nav-inner{gap:20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px}
  .sec-head-r{padding-bottom:0}
  .demo-wrap,.preview-wrap,.feature-layout,.contact-layout,.news-layout{grid-template-columns:1fr;gap:36px}
  .path-grid{grid-template-columns:repeat(2,1fr)}
  .path-item{border-right:none;border-bottom:1px solid var(--line);padding-left:0}
  .path-item:nth-child(odd){padding-right:24px;border-right:1px solid var(--line)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{padding-left:0;border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:none}
  .mega{display:none}
  .guard-inner{flex-direction:column;align-items:flex-start;gap:24px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:76px 0 64px}
  .hero-search{flex-direction:column;align-items:stretch;padding:10px}
  .hero-search .btn{width:100%}
  .pain-grid{grid-template-columns:1fr}
  .matrix{grid-template-columns:1fr}
  .m-card,.m-card.small{grid-column:span 1}
  .case-grid{grid-template-columns:1fr}
  .case-main,.case-small{grid-column:span 1}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;padding-right:0}
  .path-grid{grid-template-columns:1fr}
  .path-item{padding-right:0;border-right:none}
  .stuck-item{grid-template-columns:1fr;gap:10px}
  .news-item{grid-template-columns:1fr;gap:16px;padding:22px 14px}
  .news-item img{aspect-ratio:16/9}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:24px}
  .toast{left:24px;right:24px;bottom:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .guard-points{flex-direction:column;gap:12px}
  .guard-points span{padding:0;border-right:none}
  .faq-item summary{font-size:16px;padding:20px 2px}
}
@media (max-width:480px){
  .hero-kicker{font-size:12px;letter-spacing:.06em}
  .newsline-inner{flex-direction:column;align-items:flex-start;gap:12px;padding:16px 0}
  .preview-list strong{font-size:16px}
  .tag-cloud a.big{font-size:14px}
}

/* roulang page: category1 */
:root{
 --ink:#101215;
 --ink-2:#2A2D31;
 --muted:#6E7176;
 --paper:#F7F5F1;
 --paper-2:#FFFFFF;
 --paper-3:#EDEAE4;
 --line:#E3E0D9;
 --accent:#FF4A1C;
 --accent-deep:#E63F12;
 --accent-2:#0F6E5C;
 --radius:2px;
 --shadow-s:0 1px 2px rgba(16,18,21,.06);
 --shadow-h:0 12px 28px -12px rgba(16,18,21,.22);
 --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
 --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
 --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:var(--font-sans);
 font-size:16px;
 line-height:1.75;
 color:var(--ink);
 background:var(--paper);
 -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius)}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;line-height:1.14}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 2px rgba(255,74,28,.18)}
/* 布局 */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section.no-line{border-top:none}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,38px)}
.section-head .rule{position:relative;display:inline-block;padding-bottom:8px}
.section-head .rule::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);transition:width .24s var(--ease)}
.section-head:hover .rule::after{width:100%}
.lead{font-size:16px;line-height:1.8;color:var(--ink-2)}
.muted{color:var(--muted);font-size:14px}
.kicker{font-family:var(--font-num);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
/* 按钮与标签 */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:var(--radius);border:1px solid transparent;
 font-size:15px;font-weight:500;line-height:1.4;
 transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);box-shadow:var(--shadow-h)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{border-color:rgba(247,245,241,.5);color:var(--paper)}
.btn-ghost:hover{background:rgba(247,245,241,.1);border-color:var(--paper)}
.btn-line{border-color:var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--paper)}
.btn-soft{border-color:var(--line);background:var(--paper-2);color:var(--ink)}
.btn-soft:hover{border-color:var(--ink)}
.btn-sm{padding:8px 16px;font-size:14px}
.chip{
 display:inline-flex;align-items:center;border-radius:999px;padding:3px 12px;
 font-size:13px;line-height:1.6;border:1px solid var(--accent);color:var(--accent);background:transparent;
}
.chip-cat{border-color:var(--accent-2);color:var(--accent-2)}
.chip-plain{border-color:var(--line);color:var(--muted);background:var(--paper-2)}
/* 头部 */
.topbar{background:var(--ink);color:rgba(247,245,241,.78);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:32px}
.topbar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .topbar-mid{color:rgba(247,245,241,.55)}
.site-header{
 position:sticky;top:0;z-index:70;background:var(--paper-2);
 border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-s)}
.nav{position:relative}
.nav-inner{display:flex;align-items:center;height:68px;gap:40px}
.logo{
 font-family:var(--font-serif);font-weight:700;font-size:19px;letter-spacing:-.01em;
 border:1px solid var(--ink);padding:6px 12px;border-radius:var(--radius);white-space:nowrap;
 transition:background .2s var(--ease),color .2s var(--ease);
}
.logo:hover{background:var(--ink);color:var(--paper)}
.nav-list{display:flex;align-items:center;gap:30px;height:68px;margin-left:8px}
.nav-item{position:relative;height:100%;display:flex;align-items:center}
.nav-item > a{
 display:inline-flex;align-items:center;height:100%;font-size:15px;color:var(--ink-2);
 position:relative;transition:color .18s var(--ease);
}
.nav-item > a::after{
 content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;background:var(--accent);
 transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-item > a:hover{color:var(--ink)}
.nav-item > a:hover::after{transform:scaleX(1)}
.nav-item.active > a{color:var(--ink);font-weight:500}
.nav-item.active > a::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{
 display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);
 border-radius:var(--radius);padding:8px 14px;font-size:14px;color:var(--muted);
 background:var(--paper);transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-search:hover{border-color:var(--ink);color:var(--ink)}
.mega{
 position:absolute;top:100%;right:0;width:720px;background:var(--paper-2);
 border:1px solid var(--line);padding:24px;
 display:grid;grid-template-columns:1fr 1fr;gap:28px;
 opacity:0;visibility:hidden;transform:translateY(4px);
 transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
 z-index:80;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega h4{font-size:14px;font-family:var(--font-sans);font-weight:700;letter-spacing:.04em;color:var(--muted);margin:0 0 14px}
.mega ul li{margin-bottom:2px}
.mega ul li a{
 display:flex;align-items:center;gap:10px;font-size:14px;padding:7px 8px;border-radius:var(--radius);
 color:var(--ink-2);transition:background .16s var(--ease),color .16s var(--ease);
}
.mega ul li a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent-2);flex:none}
.mega ul li a:hover{background:var(--paper);color:var(--ink)}
.mega-card{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:10px}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.mega-card span{display:block;font-size:13px;padding:10px 12px;color:var(--ink-2)}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius);align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.mobile-drawer{
 position:fixed;inset:0;background:var(--ink);color:var(--paper);z-index:90;
 padding:28px 24px 40px;transform:translateX(100%);
 transition:transform .28s var(--ease);overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-head .logo{border-color:rgba(247,245,241,.6);color:var(--paper)}
.drawer-close{font-size:26px;line-height:1;color:var(--paper);padding:4px 8px}
.drawer-list li{border-bottom:1px solid rgba(247,245,241,.14)}
.drawer-list li a{display:block;padding:16px 2px;font-size:17px;color:rgba(247,245,241,.9)}
.drawer-list li a:hover{color:var(--accent)}
.drawer-foot{margin-top:32px}
/* 分类页头 */
.cat-hero{padding:52px 0 44px;background:var(--paper-2);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .current{color:var(--ink-2)}
.cat-hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end}
.cat-hero h1{font-size:clamp(28px,3.6vw,44px);margin-bottom:16px}
.cat-desc{max-width:720px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.cat-stat{display:flex;gap:28px;justify-content:flex-end}
.cat-stat div{padding-left:18px;border-left:1px solid var(--line)}
.cat-stat strong{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;letter-spacing:-.02em}
.cat-stat span{font-size:13px;color:var(--muted)}
/* 筛选条 */
.filter-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.filter-inner{display:flex;align-items:center;gap:20px;min-height:64px;flex-wrap:wrap;padding:12px 0}
.filter-chips{display:flex;gap:10px;flex-wrap:wrap}
.f-chip{
 border:1px solid var(--line);border-radius:999px;padding:5px 16px;font-size:14px;color:var(--ink-2);
 background:var(--paper-2);transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.f-chip:hover{border-color:var(--ink);color:var(--ink)}
.f-chip.is-active{background:var(--accent);border-color:var(--accent);color:#fff}
.filter-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.sort-select{
 border:1px solid var(--line);background:var(--paper-2);border-radius:var(--radius);
 padding:8px 12px;font-size:14px;color:var(--ink-2);
}
.sort-select:hover{border-color:var(--ink)}
.view-toggle{display:flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.view-toggle button{
 width:38px;height:36px;display:flex;align-items:center;justify-content:center;
 font-size:14px;color:var(--muted);background:var(--paper-2);transition:background .18s var(--ease),color .18s var(--ease);
}
.view-toggle button + button{border-left:1px solid var(--line)}
.view-toggle button.is-active{background:var(--ink);color:var(--paper)}
/* 列表主体 */
.list-region{padding:56px 0 72px}
.entry-list{display:block}
.entry{
 display:grid;grid-template-columns:200px 1fr;gap:24px;
 padding:24px 20px 24px 0;border-bottom:1px solid var(--line);position:relative;
 transition:background .2s var(--ease);
}
.entry::before{
 content:"";position:absolute;left:0;top:24px;bottom:24px;width:2px;background:var(--accent);
 transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
}
.entry:hover{background:var(--paper-2)}
.entry:hover::before{transform:scaleY(1)}
.entry-thumb{overflow:hidden;border-radius:var(--radius)}
.entry-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s var(--ease);background:var(--paper-3)}
.entry:hover .entry-thumb img{transform:scale(1.04)}
.entry-body{display:flex;flex-direction:column;gap:10px}
.entry-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.entry h3{font-size:19px;line-height:1.4}
.entry h3 a{transition:color .18s var(--ease)}
.entry h3 a:hover{color:var(--accent)}
.entry p{color:var(--ink-2);font-size:15px;line-height:1.8;max-width:760px}
.entry-tags{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.entry-tags span{padding-right:14px;border-right:1px solid var(--line)}
.entry-tags span:last-child{border-right:none;padding-right:0}
/* 网格视图 */
.entry-list.is-grid{
 display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px;padding-top:8px;
}
.entry-list.is-grid .entry{
 display:block;border-bottom:none;padding:0;
}
.entry-list.is-grid .entry::before{display:none}
.entry-list.is-grid .entry-thumb{margin-bottom:16px;border:1px solid var(--line)}
.entry-list.is-grid .entry-thumb img{aspect-ratio:16/10}
.entry-list.is-grid .entry p{font-size:14px;line-height:1.75}
.entry-list.is-grid .entry:hover{box-shadow:var(--shadow-h);background:var(--paper-2)}
/* 分页 */
.load-more-wrap{display:flex;flex-direction:column;align-items:center;gap:24px;padding-top:48px}
.pager{display:flex;align-items:center;gap:10px;font-family:var(--font-num);font-size:14px}
.pager span,.pager a{
 display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;
 border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);background:var(--paper-2);
 transition:border-color .18s var(--ease),color .18s var(--ease);
}
.pager a:hover{border-color:var(--ink);color:var(--ink)}
.pager .is-current{background:var(--ink);border-color:var(--ink);color:var(--paper)}
/* 热门推荐 */
.hot-list{border-top:1px solid var(--line)}
.hot-item{
 display:grid;grid-template-columns:88px 1fr 300px;gap:28px;align-items:center;
 padding:26px 0;border-bottom:1px solid var(--line);
 transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.hot-item:hover{background:var(--paper-2);padding-left:14px}
.hot-num{font-family:var(--font-serif);font-size:44px;line-height:1;color:var(--accent)}
.hot-item h3{font-size:19px;margin-bottom:8px}
.hot-item h3 a:hover{color:var(--accent)}
.hot-item p{font-size:14px;color:var(--ink-2);line-height:1.75}
.hot-note{font-size:13.5px;color:var(--muted);border-left:1px solid var(--line);padding-left:20px;line-height:1.8}
/* 标签云与专题 */
.tag-topic-grid{display:grid;grid-template-columns:1fr 380px;gap:56px;align-items:start}
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px}
.tag-cloud a{
 border:1px solid var(--line);border-radius:999px;padding:6px 16px;color:var(--ink-2);
 background:var(--paper-2);transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tag-cloud a:hover{border-color:var(--accent);color:var(--accent)}
.tag-cloud a.t1{font-size:14px}
.tag-cloud a.t2{font-size:15.5px}
.tag-cloud a.t3{font-size:17px;border-color:var(--accent-2);color:var(--accent-2)}
.topic-links li + li{margin-top:16px}
.topic-links a{display:block;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;background:var(--paper-2);transition:border-color .18s var(--ease),box-shadow .2s var(--ease)}
.topic-links a:hover{border-color:var(--ink);box-shadow:var(--shadow-h)}
.topic-links strong{display:block;font-family:var(--font-serif);font-size:17px;margin-bottom:6px}
.topic-links em{font-style:normal;font-size:13.5px;color:var(--muted)}
/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
 display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;
 padding:22px 0;text-align:left;font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--ink);
 transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-sign{flex:none;font-family:var(--font-num);font-size:20px;color:var(--accent);width:20px;text-align:center}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 0 24px;color:var(--ink-2);font-size:15px;line-height:1.85;max-width:860px}
/* 订阅区 */
.sub-block{border:1px solid var(--line);background:var(--paper-2);border-radius:var(--radius);padding:40px}
.sub-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.sub-grid h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.sub-form{display:flex;gap:12px;flex-wrap:wrap}
.sub-form input{
 flex:1 1 260px;border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;
 background:var(--paper);transition:border-color .18s var(--ease);
}
.sub-form input:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 2px rgba(255,74,28,.18)}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.toast{
 position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
 background:var(--ink);color:var(--paper);padding:12px 22px;border-radius:var(--radius);
 font-size:14px;opacity:0;visibility:hidden;transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
 z-index:120;
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
/* 进场动效 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;padding-bottom:52px}
.footer-col h4{font-family:var(--font-sans);font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li a{display:inline-block;font-size:13px;line-height:2;color:rgba(247,245,241,.72);transition:color .18s var(--ease)}
.footer-col ul li a:hover{color:var(--accent);text-decoration:underline}
.footer-sub p{font-size:13px;line-height:1.9;color:rgba(247,245,241,.66);margin-bottom:14px}
.footer-sub form{display:flex;gap:8px}
.footer-sub input{
 flex:1;border:1px solid rgba(247,245,241,.28);background:transparent;color:var(--paper);
 border-radius:var(--radius);padding:10px 12px;font-size:13px;
}
.footer-sub input::placeholder{color:rgba(247,245,241,.45)}
.footer-sub input:focus{outline:none;border-color:var(--accent)}
.footer-sub button{
 border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:var(--radius);
 padding:10px 18px;font-size:13px;transition:background .18s var(--ease);
}
.footer-sub button:hover{background:var(--accent-deep);border-color:var(--accent-deep)}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
 border-top:1px solid rgba(247,245,241,.14);padding:20px 0;font-size:13px;color:rgba(247,245,241,.6);
}
.footer-bottom nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--accent);text-decoration:underline}
/* 响应式 */
@media (max-width:1279px){
 .entry-list.is-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .tag-topic-grid{grid-template-columns:1fr 320px;gap:40px}
 .mega{width:640px}
}
@media (max-width:1023px){
 .nav-list,.nav-search{display:none}
 .burger{display:inline-flex}
 .cat-hero-inner{grid-template-columns:1fr;gap:28px;align-items:start}
 .cat-stat{justify-content:flex-start}
 .entry{grid-template-columns:160px 1fr;gap:20px}
 .hot-item{grid-template-columns:64px 1fr;gap:20px}
 .hot-note{grid-column:2;border-left:none;padding-left:0}
 .tag-topic-grid{grid-template-columns:1fr;gap:40px}
 .sub-grid{grid-template-columns:1fr;gap:28px}
 .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
 .section{padding:72px 0}
}
@media (max-width:767px){
 .container{padding:0 16px}
 .cat-hero{padding:36px 0 32px}
 .cat-stat{gap:18px}
 .cat-stat strong{font-size:22px}
 .filter-inner{gap:12px}
 .filter-right{margin-left:0;width:100%}
 .entry{grid-template-columns:1fr;gap:16px;padding:22px 0}
 .entry::before{top:22px;bottom:22px}
 .entry-list.is-grid{grid-template-columns:1fr}
 .hot-item{grid-template-columns:1fr;gap:12px;padding:22px 0}
 .hot-num{font-size:34px}
 .hot-note{border-left:none;padding-left:0}
 .section{padding:56px 0}
 .section-head{flex-direction:column;align-items:flex-start;gap:12px}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .sub-block{padding:28px 20px}
 .faq-q{font-size:16px;padding:18px 0}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:480px){
 .kicker{display:none}
 .nav-inner{gap:16px}
 .entry-tags span{border-right:none;padding-right:0}
 .pager{flex-wrap:wrap;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
 *{animation:none !important;transition:none !important}
 .reveal{opacity:1;transform:none}
 html{scroll-behavior:auto}
}