/* roulang page: index */
:root{
  --ink-900:#15181D;
  --ink-700:#3B4149;
  --ink-500:#6E747C;
  --bg-base:#F7F4EF;
  --bg-alt:#FFFDFA;
  --surface:#FFFFFF;
  --line:#E7E1D8;
  --brand:#FF4A1C;
  --brand-2:#FF8A1F;
  --brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 52%,#FFB020 100%);
  --accent:#D6FF3F;
  --accent-ink:#1A2306;
  --ok:#1FA971;
  --warn:#E0A21A;
  --danger:#D93A1F;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed","Oswald",ui-sans-serif,system-ui,sans-serif;
  --r-sm:10px;
  --r-md:14px;
  --r-card:20px;
  --r-hero:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-900);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:var(--accent);color:var(--accent-ink)}

/* ============ App Shell 侧栏 ============ */
.shell{
  position:fixed;inset:0 auto 0 0;width:var(--side);
  background:var(--ink-900);color:#fff;
  display:flex;flex-direction:column;
  padding:22px 16px 18px;z-index:70;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;background:var(--brand-grad);
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;
  font-size:17px;letter-spacing:.02em;color:#fff;box-shadow:var(--sh-1);
}
.brand-text{min-width:0}
.brand-name{font-size:14.5px;font-weight:700;line-height:1.3;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-sub{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.48);line-height:1.6}
.nav{flex:1;overflow-y:auto;padding-top:16px;display:flex;flex-direction:column;gap:4px}
.nav-label{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.4);padding:12px 12px 6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:0 12px;border-radius:12px;
  color:rgba(255,255,255,.72);font-size:14px;font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,74,28,.12);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;display:grid;place-items:center;color:currentColor;opacity:.9}
.nav-ico svg{width:18px;height:18px}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shell-foot{margin-top:14px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:10px}
.shell-actions{display:flex;gap:8px}
.shell-btn{
  flex:1;min-height:40px;border:0;border-radius:var(--r-pill);cursor:pointer;
  background:rgba(255,255,255,.08);color:#fff;font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.shell-btn:hover{background:rgba(255,255,255,.16);transform:translateY(-1px)}
.shell-btn.primary{background:var(--brand-grad)}
.status{display:flex;align-items:center;gap:8px;font-size:12px;color:rgba(255,255,255,.56);padding:0 4px}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(214,255,63,.16)}

/* 顶部移动栏 + 抽屉 */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
  background:rgba(21,24,29,.96);backdrop-filter:blur(8px);
  align-items:center;justify-content:space-between;padding:0 16px;color:#fff;
}
.topbar .brand{padding:0;border:0;gap:10px}
.topbar .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:11px;font-size:15px}
.topbar .brand-name{font-size:13.5px}
.burger{width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);display:grid;place-items:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{
  position:fixed;inset:0 auto 0 0;width:280px;background:var(--ink-900);z-index:90;
  transform:translateX(-100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:22px 16px;color:#fff;
}
.drawer.open{transform:translateX(0)}
.drawer-close{align-self:flex-end;width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:transparent;color:#fff;cursor:pointer}
.mask{position:fixed;inset:0;background:rgba(21,24,29,.5);opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:85}
.mask.open{opacity:1;pointer-events:auto}

/* ============ 主区 ============ */
.main-area,.site-footer{margin-left:var(--side)}
.container{max-width:1440px;margin:0 auto;padding:0 clamp(16px,3vw,40px)}
.section{padding:clamp(48px,7vw,96px) 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:clamp(24px,3vw,40px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;color:var(--brand);font-weight:700}
.eyebrow::before{content:"";width:14px;height:4px;border-radius:2px;background:var(--brand-grad)}
.sec-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin-top:10px;color:var(--ink-900)}
.sec-desc{color:var(--ink-500);font-size:15px;max-width:64ch;margin-top:10px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px;white-space:nowrap;transition:gap .2s var(--ease)}
.link-more:hover{gap:12px}

/* ============ Hero ============ */
.hero{padding:clamp(28px,4vw,56px) 0 clamp(40px,5vw,72px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,1fr);gap:clamp(24px,3vw,48px);align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--accent);color:var(--accent-ink);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.hero-title{
  font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.16;
  letter-spacing:-.01em;margin:18px 0 14px;color:var(--ink-900);
}
.hero-title em{font-style:normal;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(15px,1.5vw,17px);color:var(--ink-700);max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;cursor:pointer;border:0;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),opacity .2s;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-3);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px}
.hero-stats{
  margin-top:34px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 16px;box-shadow:var(--sh-1);
}
.stat-num{font-family:var(--font-num);font-weight:700;font-size:26px;line-height:1.1;color:var(--brand);letter-spacing:.02em}
.stat-num small{font-size:13px;color:var(--ink-500);font-weight:600;margin-left:2px}
.stat-label{font-size:12.5px;color:var(--ink-500);margin-top:4px}
.hero-media{position:relative;border-radius:var(--r-hero);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;background:#EFE9DF}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(255,74,28,.30),rgba(21,24,29,.55));
}
.hero-media-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;color:#fff;
  display:flex;flex-direction:column;gap:4px;
}
.hero-media-tag b{font-size:16px;font-weight:700;letter-spacing:.01em}
.hero-media-tag span{font-size:12.5px;color:rgba(255,255,255,.82)}

/* ============ 通用卡片 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-lime{background:var(--accent);color:var(--accent-ink)}
.badge-ink{background:var(--ink-900);color:var(--accent);font-family:var(--font-num)}
.badge-line{background:#fff;border:1px solid var(--brand);color:var(--brand)}
.ratio{position:relative;overflow:hidden;border-radius:16px;background:#EFE9DF}
.ratio img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.ratio-16x10{aspect-ratio:16/10}
.ratio-4x3{aspect-ratio:4/3}
.arrow{display:inline-block;transition:transform .22s var(--ease)}
.card:hover .arrow,.pack-card:hover .arrow,.news-item:hover .arrow,.rec-card:hover .arrow{transform:translateX(4px)}

/* ============ 核对清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:clamp(18px,2vw,28px);box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,74,28,.28)}
.check-card.w7{grid-column:span 7}
.check-card.w5{grid-column:span 5}
.c-ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(255,74,28,.10);color:var(--brand);
}
.c-ico svg{width:22px;height:22px}
.check-card h3{font-size:18px;font-weight:700;line-height:1.35}
.check-card p{font-size:14.5px;color:var(--ink-500)}
.check-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700)}
.check-list li::before{content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--brand-grad)}

/* ============ 合集目录 ============ */
.pack-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.pack-card{
  grid-column:span 4;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:clamp(16px,1.6vw,22px);
  display:flex;flex-direction:column;gap:14px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.pack-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.pack-card:hover .ratio img{transform:scale(1.04)}
.pack-card.wide{grid-column:span 6}
.pack-card.half{grid-column:span 3}
.pack-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.pack-no{font-family:var(--font-num);font-weight:700;font-size:20px;color:var(--brand);letter-spacing:.04em}
.pack-card h3{font-size:17.5px;font-weight:700;line-height:1.4}
.pack-card p{font-size:14px;color:var(--ink-500)}
.pack-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:8px;border-top:1px dashed var(--line)}
.pack-count{font-family:var(--font-num);font-weight:700;font-size:14px;color:var(--ink-700);letter-spacing:.02em}
.pack-go{color:var(--brand);font-weight:700;font-size:13.5px;display:inline-flex;gap:6px;align-items:center}

/* ============ 精选条目 ============ */
.feature-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.card:hover .ratio img{transform:scale(1.04)}
.feature-main{display:flex;flex-direction:column}
.feature-main .fc-body{padding:clamp(18px,2vw,26px);display:flex;flex-direction:column;gap:12px}
.feature-main h3{font-size:20px;font-weight:700;line-height:1.35}
.feature-main p{font-size:14.5px;color:var(--ink-500)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-500)}
.meta-row .num{font-family:var(--font-num);font-weight:700;letter-spacing:.02em;color:var(--ink-700)}
.feature-list{display:flex;flex-direction:column;gap:16px}
.row-card{display:grid;grid-template-columns:104px minmax(0,1fr);gap:16px;padding:14px;align-items:center}
.row-card .ratio{border-radius:14px}
.row-card h3{font-size:15.5px;font-weight:700;line-height:1.45}
.row-card p{font-size:13.5px;color:var(--ink-500);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ============ 最新信息 CMS 区 ============ */
.news-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.news-list{display:flex;flex-direction:column}
.news-item{
  display:grid;grid-template-columns:132px minmax(0,1fr) 40px;gap:20px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.news-item:first-child{border-top:1px solid var(--line)}
.news-item:hover{background:rgba(255,253,250,.9)}
.news-time{display:flex;flex-direction:column;gap:8px}
.news-date{font-family:var(--font-num);font-weight:700;font-size:15px;color:var(--ink-700);letter-spacing:.02em}
.news-title{font-size:17px;font-weight:700;line-height:1.45}
.news-title a:hover{color:var(--brand)}
.news-sum{font-size:14px;color:var(--ink-500);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-go{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-weight:700;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.news-go:hover{background:var(--ink-900);color:var(--accent);transform:translateX(2px)}
.empty-state{
  background:var(--bg-alt);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state svg{width:38px;height:38px;color:var(--ink-500)}
.empty-state p{color:var(--ink-500);font-size:14.5px}
.news-aside{
  background:var(--ink-900);color:#fff;border-radius:var(--r-hero);
  padding:clamp(20px,2vw,28px);display:flex;flex-direction:column;gap:18px;
  position:sticky;top:24px;
}
.news-aside h3{font-size:17px;font-weight:700}
.news-aside p{font-size:13.5px;color:rgba(255,255,255,.66)}
.aside-list{display:flex;flex-direction:column;gap:10px}
.aside-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:rgba(255,255,255,.8);padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}
.aside-list li:last-child{border-bottom:0;padding-bottom:0}
.aside-list b{font-family:var(--font-num);color:var(--accent);font-weight:700}

/* ============ 相关推荐 ============ */
.rec-scroll{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.rec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.rec-card:hover .ratio img{transform:scale(1.04)}
.rec-card h3{font-size:15.5px;font-weight:700;line-height:1.45}
.rec-card p{font-size:13.5px;color:var(--ink-500)}
.rec-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-no{font-family:var(--font-num);font-weight:700;color:var(--brand);font-size:15px;letter-spacing:.04em}
.faq-ico{
  margin-left:auto;position:relative;width:26px;height:26px;flex:0 0 26px;
  border-radius:50%;border:1px solid var(--line);background:#fff;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%)}
.faq-ico::before{width:12px;height:2px}
.faq-ico::after{width:2px;height:12px;transition:transform .22s var(--ease)}
.faq-item[open] .faq-ico{border-color:var(--brand);transform:rotate(45deg)}
.faq-a{
  padding:2px 0 22px 18px;margin-left:6px;border-left:3px solid var(--brand);
  color:var(--ink-500);font-size:14.5px;line-height:1.8;
}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink-900);border-radius:var(--r-hero);padding:clamp(26px,3.4vw,44px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:var(--brand-grad);opacity:.30;filter:blur(6px);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.28}
.cta-band p{color:rgba(255,255,255,.7);font-size:14.5px;margin-top:10px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-lime{background:var(--accent);color:var(--accent-ink)}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 14px 32px rgba(214,255,63,.22)}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-outline-light:hover{background:#fff;color:var(--ink-900);transform:translateY(-2px)}

/* ============ 表单 ============ */
.subscribe{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:rgba(255,255,255,.82)}
.input{
  height:50px;border-radius:var(--r-md);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:14.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.input::placeholder{color:rgba(255,255,255,.42)}
.input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(255,74,28,.25)}
.input[disabled]{opacity:.4;cursor:not-allowed}
.field-note{font-size:12px;color:rgba(255,255,255,.5)}
.ok-bar{margin-top:14px;background:rgba(31,169,113,.16);border:1px solid rgba(31,169,113,.5);color:#9FE6C6;border-radius:var(--r-md);padding:10px 14px;font-size:13.5px}
.err-note{font-size:12px;color:#FF9C86}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;position:relative;padding:0 0 26px}
.site-footer::before{content:"";display:block;height:4px;background:var(--brand-grad)}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:clamp(36px,5vw,60px) 0 30px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:12px}
.foot-name{font-size:16px;font-weight:700;color:#fff;line-height:1.3}
.foot-sub{font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.1em}
.site-footer p,.site-footer li,.site-footer a{font-size:13.5px;color:rgba(255,255,255,.62)}
.site-footer h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.42);font-weight:700;margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{transition:color .2s var(--ease),padding-left .2s var(--ease)}
.foot-links a:hover{color:#fff;padding-left:4px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom span{font-size:12.5px;color:rgba(255,255,255,.44)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--side:76px}
  .shell{padding:18px 10px}
  .brand{justify-content:center;padding:2px 0 16px}
  .brand-text,.nav-label,.nav-text,.shell-btn span,.status span{display:none}
  .nav-item{justify-content:center;padding:0}
  .shell-actions{flex-direction:column}
  .shell-btn{flex:0 0 auto;width:100%}
  .status{justify-content:center}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .pack-card.wide{grid-column:span 6}
  .pack-card{grid-column:span 6}
  .pack-card.half{grid-column:span 6}
  .check-card.w7,.check-card.w5{grid-column:span 6}
  .news-wrap{grid-template-columns:minmax(0,1fr)}
  .news-aside{position:static}
  .rec-scroll{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:999px){
  .shell{display:none}
  .topbar{display:flex}
  .main-area,.site-footer{margin-left:0}
  body{padding-top:60px}
  .feature-grid{grid-template-columns:minmax(0,1fr)}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-item{grid-template-columns:minmax(0,1fr) 40px}
  .news-time{flex-direction:row;align-items:center;gap:10px;grid-column:1 / -1}
}
@media (max-width:768px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .pack-grid,.check-grid{gap:16px}
  .pack-card,.pack-card.wide,.pack-card.half,.check-card.w7,.check-card.w5{grid-column:span 12}
  .row-card{grid-template-columns:88px minmax(0,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start}
  .subscribe{grid-template-columns:minmax(0,1fr)}
  .rec-scroll{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  .hero-cta .btn{width:100%}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .news-item{padding:18px 0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: article */
:root{
  --ink-900:#15181D;--ink-700:#3B4149;--ink-500:#6E747C;
  --bg-base:#F7F4EF;--bg-alt:#FFFDFA;--surface:#FFFFFF;--line:#E7E1D8;
  --brand:#FF4A1C;--brand-2:#FF8A1F;--brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 55%,#FFB020 100%);
  --accent:#D6FF3F;--accent-ink:#1A2306;
  --ok:#1FA971;--warn:#E0A21A;--danger:#D93A1F;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Barlow Condensed","Oswald",ui-sans-serif,system-ui,sans-serif;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --r-sm:10px;--r-input:14px;--r-card:20px;--r-hero:28px;
  --pad-x:clamp(16px,3vw,40px);
  --gap-y:clamp(48px,7vw,96px);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-base);color:var(--ink-700);
  font-family:var(--font-sans);font-size:16px;line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1440px;margin:0 auto;padding:0 var(--pad-x)}

/* ============ App Shell ============ */
.shell{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:60;
  background:var(--ink-900);color:#fff;display:flex;flex-direction:column;
  gap:18px;padding:22px 16px;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{
  width:42px;height:42px;flex:0 0 auto;border-radius:13px;background:var(--brand-grad);
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;
  font-size:17px;letter-spacing:.04em;color:#fff;box-shadow:0 8px 20px rgba(255,74,28,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:800;color:#fff;letter-spacing:.01em}
.brand-sub{font-family:var(--font-num);font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.5)}
.nav-label{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.38);padding-left:10px}
.nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:11px;min-height:44px;
  padding:0 12px;border-radius:12px;color:rgba(255,255,255,.72);
  font-size:14.5px;font-weight:500;transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,74,28,.12);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand);
}
.nav-ico{width:20px;height:20px;flex:0 0 auto;display:grid;place-items:center}
.nav-ico svg{width:18px;height:18px}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08)}
.side-actions{display:flex;gap:8px}
.side-btn{
  flex:1;height:40px;border-radius:999px;background:rgba(255,255,255,.08);
  color:#fff;font-size:13px;font-weight:600;transition:background .2s ease,transform .2s ease;
}
.side-btn:hover{background:rgba(255,74,28,.28);transform:translateY(-1px)}
.status{display:flex;align-items:center;gap:9px;font-size:12px;color:rgba(255,255,255,.6)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(31,169,113,.18)}
.main{margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh}
.topbar{display:none}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(21,24,29,.5);
  backdrop-filter:blur(2px);z-index:55;
}
.drawer-mask.show{display:block}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:700;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px rgba(255,74,28,.26)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-line{border:1.5px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn-line:hover{background:var(--ink-900);color:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:14.5px}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:700;line-height:1;
}
.badge-lime{background:var(--accent);color:var(--accent-ink)}
.badge-dark{background:var(--ink-900);color:var(--accent)}
.badge-outline{background:#fff;border:1px solid var(--line);color:var(--brand)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.08em;color:var(--ink-500);
}
.eyebrow i{width:14px;height:4px;border-radius:2px;background:var(--brand-grad);display:block}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.25}
.sec-head p{color:var(--ink-500);font-size:14.5px;margin-top:8px;max-width:640px}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:26px 0 0;font-size:13px;color:var(--ink-500);
}
.crumb a{color:var(--ink-500);transition:color .2s ease}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:#C7C0B4}
.crumb-cur{color:var(--ink-700);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--line);margin-bottom:38px}
.article-head h1{
  font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.16;
  letter-spacing:-.01em;margin:14px 0 16px;
}
.article-head .lede{color:var(--ink-500);font-size:16px;max-width:760px}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:20px;font-size:13px;color:var(--ink-500)}
.meta-row .num{font-family:var(--font-num);font-weight:700;font-size:15px;color:var(--ink-900);letter-spacing:.02em}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CFC7BA}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(28px,4vw,56px);
  align-items:start;padding-bottom:var(--gap-y);
}
.article-body{
  max-width:800px;font-size:16px;line-height:1.8;color:var(--ink-700);
  word-break:break-word;
}
.article-body > * + *{margin-top:18px}
.article-body h2{
  position:relative;margin-top:42px;padding-left:16px;
  font-size:clamp(20px,2.4vw,26px);line-height:1.32;color:var(--ink-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:3px;background:var(--brand-grad);
}
.article-body h3{margin-top:30px;font-size:19px;line-height:1.4;color:var(--ink-900)}
.article-body h4{margin-top:24px;font-size:17px;color:var(--ink-900)}
.article-body strong{color:var(--ink-900)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-2)}
.article-body ul{list-style:none;padding-left:2px}
.article-body ul li{position:relative;padding-left:20px}
.article-body ul li + li{margin-top:8px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--brand);
}
.article-body ol{padding-left:24px;list-style:decimal}
.article-body ol li + li{margin-top:8px}
.article-body ol li::marker{color:var(--brand);font-family:var(--font-num);font-weight:700}
.article-body img{border-radius:16px;margin:26px auto;background:var(--bg-base)}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--bg-base);
  border-left:4px solid var(--brand);border-radius:0 14px 14px 0;color:var(--ink-700);
}
.article-body pre{
  background:#1B1F26;color:#EDEFF2;padding:18px 20px;border-radius:14px;
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{background:#F2EEE7;padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left}
.article-body th{background:var(--bg-base);color:var(--ink-900);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

/* 空态 */
.empty-state{
  background:var(--bg-alt);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:46px 28px;text-align:center;
}
.empty-ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--bg-base);
  display:grid;place-items:center;color:var(--brand);
}
.empty-ico svg{width:26px;height:26px}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--ink-500);font-size:14.5px;margin-bottom:20px}

/* ============ 侧栏卡片 ============ */
.aside-col{display:flex;flex-direction:column;gap:18px;position:sticky;top:28px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 span{
  width:6px;height:6px;border-radius:2px;background:var(--brand);display:inline-block;
}
.info-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.info-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-500);padding-bottom:12px;border-bottom:1px dashed var(--line)}
.info-list li:last-child{border-bottom:0;padding-bottom:0}
.info-list b{color:var(--ink-900);font-weight:700;text-align:right}
.info-list .num{font-family:var(--font-num);font-size:15px;letter-spacing:.02em}
.entry-list{list-style:none;display:flex;flex-direction:column;gap:6px}
.entry-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:12px;font-size:14px;font-weight:600;color:var(--ink-700);
  background:var(--bg-base);transition:background .2s ease,color .2s ease,transform .2s ease;
}
.entry-list a:hover{background:#FFF2EC;color:var(--brand);transform:translateX(2px)}
.entry-list a svg{width:15px;height:15px;flex:0 0 auto;color:var(--brand)}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--ink-900);border-radius:var(--r-hero);padding:clamp(26px,4vw,42px);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  position:relative;overflow:hidden;margin-bottom:var(--gap-y);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 82% 18%,rgba(255,74,28,.42),transparent 58%);
}
.cta-band > *{position:relative}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.68);font-size:14.5px;margin-top:10px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(214,255,63,.24)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.2)}

/* ============ 相关推荐 ============ */
.related{padding-bottom:var(--gap-y)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease;
}
.rcard:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.rcard-media{aspect-ratio:16/10;background:var(--bg-base);overflow:hidden}
.rcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rcard:hover .rcard-media img{transform:scale(1.04)}
.rcard-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard-body h3{font-size:17.5px;line-height:1.4}
.rcard-body p{font-size:14px;color:var(--ink-500);flex:1}
.rcard-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px}

/* ============ 栏目入口 ============ */
.column-entry{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-hero);
  padding:clamp(24px,3.5vw,38px);display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:var(--gap-y);
}
.column-entry h2{font-size:clamp(19px,2.2vw,24px)}
.column-entry p{color:var(--ink-500);font-size:14.5px;margin-top:8px;max-width:620px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;background:var(--ink-900);color:rgba(255,255,255,.72);
  border-top:4px solid transparent;
  border-image:var(--brand-grad) 1;
  padding:clamp(40px,5vw,64px) 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px)}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-name{display:block;font-size:16px;font-weight:800;color:#fff}
.foot-sub{display:block;font-family:var(--font-num);font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.45)}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:360px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:11px;list-style:none}
.foot-links a,.foot-links li{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease}
.foot-links a:hover{color:var(--brand-3)}
.foot-bottom{
  margin-top:clamp(30px,4vw,48px);padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:76px}
  .sidebar{padding:18px 10px;align-items:center}
  .brand-text,.nav-text,.nav-label,.status-text{display:none}
  .nav-item{justify-content:center;padding:0;width:48px}
  .side-actions{flex-direction:column}
  .side-btn{width:48px;flex:none;padding:0;font-size:0}
  .side-btn::before{content:"★";font-size:16px}
  .side-btn + .side-btn::before{content:"↗"}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .aside-col{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1099px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:999px){
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .28s cubic-bezier(.22,.61,.36,1);
    align-items:stretch;padding:20px 16px;
    box-shadow:0 24px 60px rgba(0,0,0,.4);
  }
  .sidebar.open{transform:translateX(0)}
  .brand-text,.nav-text,.nav-label,.status-text{display:block}
  .nav-item{justify-content:flex-start;padding:0 12px;width:auto}
  .side-actions{flex-direction:row}
  .side-btn{width:auto;flex:1;font-size:13px}
  .side-btn::before{content:none}
  .main{margin-left:0}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    position:sticky;top:0;z-index:70;height:60px;padding:0 16px;
    background:var(--ink-900);box-shadow:0 2px 14px rgba(21,24,29,.24);
  }
  .topbar .brand-mark{width:34px;height:34px;font-size:14px;border-radius:10px}
  .topbar .brand-name{font-size:14px}
  .hamb{
    width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.1);
    display:grid;place-items:center;color:#fff;
  }
  .hamb svg{width:20px;height:20px}
  .article-head{padding-top:18px}
  .crumb{padding-top:18px}
}
@media (max-width:767px){
  .card-grid{grid-template-columns:1fr}
  .aside-col{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .column-entry{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-head h1{font-size:clamp(24px,7vw,30px)}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .sec-head{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --ink-900:#15181D;
  --ink-700:#3B4149;
  --ink-500:#6E747C;
  --bg-base:#F7F4EF;
  --bg-alt:#FFFDFA;
  --surface:#FFFFFF;
  --line:#E7E1D8;
  --brand:#FF4A1C;
  --brand-2:#FF8A1F;
  --brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 52%,#FFB020 100%);
  --accent:#D6FF3F;
  --accent-ink:#1A2306;
  --ok:#1FA971;
  --warn:#E0A21A;
  --danger:#D93A1F;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Barlow Condensed","Oswald",ui-sans-serif,"PingFang SC",sans-serif;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --r-sm:10px;
  --r-input:14px;
  --r-card:20px;
  --r-big:28px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --side:248px;
}
*,*::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:1.78;
  color:var(--ink-700);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{color:var(--ink-900);line-height:1.25}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;font-weight:700}
.container{width:100%;max-width:1440px;margin:0 auto;padding:0 clamp(16px,3vw,40px)}

/* ---------- App Shell ---------- */
.app{display:flex;min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--ink-900);color:#fff;z-index:50;
  display:flex;flex-direction:column;gap:18px;
  padding:22px 16px;overflow:hidden;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 4px;border-radius:14px}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:14px;
  background:var(--brand-grad);display:grid;place-items:center;
  font-family:var(--font-num);font-weight:700;font-size:19px;color:#fff;
  box-shadow:0 8px 20px rgba(255,74,28,.32);
}
.brand-name{display:block;font-size:14px;font-weight:700;color:#fff;line-height:1.35;letter-spacing:.01em}
.brand-sub{display:block;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.48);margin-top:2px}
.nav{display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;overflow-x:hidden}
.nav-label{font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.36);padding:8px 12px 4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:12px;
  color:rgba(255,255,255,.72);font-size:14px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,74,28,.14);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand);
}
.nav-ico{flex:0 0 20px;display:grid;place-items:center;opacity:.92}
.nav-ico svg{width:20px;height:20px}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.side-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:12px 14px;border-radius:999px;
  background:var(--brand-grad);color:#fff;font-size:13px;font-weight:600;
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.side-btn:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-3)}
.side-status{display:flex;align-items:center;gap:8px;font-size:12px;color:rgba(255,255,255,.55);padding-left:6px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(214,255,63,.16)}
.content{flex:1;min-width:0;margin-left:var(--side);display:flex;flex-direction:column}
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:55;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:var(--ink-900);color:#fff;
}
.mobile-brand{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700}
.mobile-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;font-size:15px}
.hamb{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:#fff;
}
.hamb svg{width:22px;height:22px}
.scrim{
  position:fixed;inset:0;background:rgba(21,24,29,.55);z-index:56;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.scrim.show{opacity:1;visibility:visible}

@media (min-width:1000px) and (max-width:1279px){
  :root{--side:76px}
  .sidebar{padding:20px 12px;align-items:center}
  .brand{padding:4px}
  .brand-text,.nav-text,.nav-label,.side-status span,.side-btn .btn-tx{display:none}
  .nav-item{justify-content:center;padding:10px}
  .side-btn{padding:12px;width:52px;height:52px;border-radius:16px}
}
@media (max-width:999px){
  .mobile-bar{display:flex}
  .sidebar{
    width:276px;transform:translateX(-104%);z-index:60;
    transition:transform .28s var(--ease);
  }
  .sidebar.open{transform:translateX(0)}
  .content{margin-left:0;padding-top:60px}
}

/* ---------- Buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:14px;font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 20px rgba(255,74,28,.24)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{border:1.5px solid var(--ink-900);color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-ghost-light{border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn-text{color:var(--brand);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;padding:4px 0}
.btn-text .arw{transition:transform .2s var(--ease)}
.btn-text:hover .arw{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;filter:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-lime{background:var(--accent);color:var(--accent-ink)}
.badge-dark{background:var(--ink-900);color:#fff}
.badge-dark .num{color:var(--accent)}
.badge-outline{background:#fff;border:1px solid rgba(255,74,28,.45);color:var(--brand)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:8px;
  background:rgba(255,74,28,.08);color:var(--brand);font-size:12px;font-weight:600;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--ink-500);font-weight:600;
}
.eyebrow::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--brand)}
.eyebrow-light{color:rgba(255,255,255,.7)}
.eyebrow-light::before{background:var(--accent)}

/* ---------- Sections ---------- */
.sec{padding:clamp(48px,7vw,96px) 0}
.sec-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-dark{background:var(--ink-900);color:rgba(255,255,255,.78)}
.sec-dark h2,.sec-dark h3{color:#fff}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:clamp(24px,3vw,40px);flex-wrap:wrap;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-top:10px}
.section-head p{margin-top:10px;color:var(--ink-500);max-width:62ch;font-size:15px}
.sec-dark .section-head p{color:rgba(255,255,255,.6)}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:rgba(255,255,255,.78);
  padding:clamp(32px,5vw,64px) 0 clamp(40px,6vw,72px);
}
.page-hero::after{
  content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(255,74,28,.34),rgba(255,74,28,0) 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.75)}
.crumbs a:hover{color:var(--accent)}
.crumbs span[aria-current]{color:#fff}
.ph-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:center}
.ph-copy h1{color:#fff;font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.16;letter-spacing:-.01em;margin:14px 0 16px}
.ph-sub{font-size:clamp(15px,1.4vw,17px);color:rgba(255,255,255,.72);max-width:56ch}
.ph-actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 30px}
.stat-row{display:flex;gap:12px;flex-wrap:wrap}
.stat{
  display:flex;align-items:baseline;gap:8px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:999px;padding:9px 16px;font-size:12px;color:rgba(255,255,255,.66);
}
.stat b{font-family:var(--font-num);font-size:19px;color:var(--accent);line-height:1}
.ph-media{border-radius:var(--r-big);overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.38);background:#22262C;aspect-ratio:16/10}
.ph-media img{width:100%;height:100%;object-fit:cover}

/* ---------- Collect grid ---------- */
.collect-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.collect-card{
  position:relative;grid-column:span 4;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.collect-card:nth-child(1){grid-column:span 7}
.collect-card:nth-child(2){grid-column:span 5}
.collect-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,74,28,.35)}
.cc-cover{position:relative;aspect-ratio:16/10;background:#F1ECE4;overflow:hidden}
.cc-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.collect-card:hover .cc-cover img{transform:scale(1.04)}
.cc-num{
  position:absolute;top:14px;left:14px;z-index:2;
  min-width:44px;height:32px;padding:0 10px;border-radius:10px;
  background:var(--ink-900);color:var(--accent);
  font-family:var(--font-num);font-size:17px;font-weight:700;
  display:grid;place-items:center;
}
.cc-body{padding:clamp(18px,2vw,28px);display:flex;flex-direction:column;gap:12px;flex:1}
.cc-body h3{font-size:19px;font-weight:700}
.cc-body p{font-size:14.5px;color:var(--ink-500)}
.cc-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.cc-count{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-500)}
.cc-count b{font-family:var(--font-num);font-size:16px;color:var(--brand)}
.cc-arw{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,74,28,.08);color:var(--brand);font-size:16px;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.collect-card:hover .cc-arw{background:var(--brand);color:#fff;transform:translateX(3px)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:clamp(20px,2.2vw,30px);position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand-grad)}
.step-num{font-family:var(--font-num);font-size:40px;font-weight:700;color:var(--brand);line-height:1}
.step h3{font-size:18px;font-weight:700;margin:14px 0 8px}
.step p{font-size:14.5px;color:var(--ink-500)}
.step-meta{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}

/* ---------- Split block ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
.split-media{border-radius:var(--r-big);overflow:hidden;aspect-ratio:16/10;background:#F1ECE4;box-shadow:var(--sh-2)}
.split-media img{width:100%;height:100%;object-fit:cover}
.src-list{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.src-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-input);
  padding:16px 18px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.src-item:hover{border-color:rgba(255,74,28,.4);transform:translateX(3px)}
.src-idx{
  flex:0 0 30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--ink-900);color:var(--accent);font-family:var(--font-num);font-size:15px;font-weight:700;
}
.src-item h4{font-size:15.5px;font-weight:700;margin-bottom:4px}
.src-item p{font-size:14px;color:var(--ink-500)}

/* ---------- Scenario rows ---------- */
.scene-list{display:flex;flex-direction:column;gap:18px}
.scene{
  display:grid;grid-template-columns:200px 1fr auto;gap:clamp(16px,2vw,32px);
  align-items:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:clamp(18px,2vw,26px);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.scene-head{display:flex;flex-direction:column;gap:8px}
.scene-head h3{font-size:17px;font-weight:700}
.scene p{font-size:14.5px;color:var(--ink-500)}
.scene .badge{justify-self:end}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 clamp(24px,4vw,56px)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-num{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--brand);flex:0 0 28px}
.faq-t{flex:1}
.faq-icon{position:relative;flex:0 0 22px;height:22px;transition:transform .22s var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-500);border-radius:2px;transition:background .2s var(--ease);
}
.faq-icon::before{top:10px;left:0;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a-inner{
  padding:0 0 22px 42px;font-size:14.8px;color:var(--ink-500);
  border-left:3px solid transparent;
}
.faq-item.open .faq-a-inner{border-left:3px solid var(--brand);padding-left:18px;margin-left:0;margin-bottom:6px}

/* ---------- Recommend ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rec-cover{aspect-ratio:16/10;background:#F1ECE4;overflow:hidden}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rec-card:hover .rec-cover img{transform:scale(1.04)}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17px;font-weight:700}
.rec-body p{font-size:14px;color:var(--ink-500)}
.rec-body .btn-text{margin-top:auto}

/* ---------- CTA strip ---------- */
.cta-strip{
  border-radius:var(--r-big);background:var(--brand-grad);color:#fff;
  padding:clamp(26px,3.4vw,48px);display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;box-shadow:0 20px 48px rgba(255,74,28,.26);
}
.cta-strip h2{color:#fff;font-size:clamp(21px,2.4vw,28px);font-weight:800;margin-bottom:8px}
.cta-strip p{color:rgba(255,255,255,.88);font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--brand);font-weight:700}
.btn-white:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(21,24,29,.24)}
.cta-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.8)}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink-900);color:rgba(255,255,255,.72);
  padding:0 0 28px;margin-top:auto;position:relative;
}
.site-footer::before{content:"";display:block;height:4px;background:var(--brand-grad);margin-bottom:clamp(36px,5vw,60px)}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:clamp(24px,3vw,48px);
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-name{display:block;font-size:15px;font-weight:700;color:#fff}
.foot-sub{display:block;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.45);margin-top:2px}
.site-footer p{font-size:14px;color:rgba(255,255,255,.62);max-width:40ch}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a,.foot-links li{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:clamp(28px,4vw,48px);padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .ph-grid{grid-template-columns:1fr;gap:32px}
  .collect-card:nth-child(1),.collect-card:nth-child(2),.collect-card{grid-column:span 6}
  .collect-card:nth-child(5){grid-column:span 12}
}
@media (max-width:999px){
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .scene{grid-template-columns:1fr;gap:12px}
  .scene .badge{justify-self:start}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .collect-card,.collect-card:nth-child(1),.collect-card:nth-child(2),.collect-card:nth-child(5){grid-column:span 12}
  .faq-grid{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .cta-strip{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .ph-actions .btn{width:100%}
  .stat-row .stat{width:100%;justify-content:flex-start}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --ink-900:#15181D;
  --ink-700:#3B4149;
  --ink-500:#6E747C;
  --bg-base:#F7F4EF;
  --bg-alt:#FFFDFA;
  --surface:#FFFFFF;
  --line:#E7E1D8;
  --brand:#FF4A1C;
  --brand-2:#FF8A1F;
  --brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 55%,#FFB020 100%);
  --accent:#D6FF3F;
  --accent-ink:#1A2306;
  --ok:#1FA971;
  --warn:#E0A21A;
  --danger:#D93A1F;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-xl:28px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Barlow Condensed","Oswald",ui-sans-serif,system-ui,sans-serif;
  --sb:248px;
}

/* ========== 基础 reset ========== */
*,*::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:1.78;
  color:var(--ink-700);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.16}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.25}
h3{font-size:20px;line-height:1.35}
h4{font-size:17px;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.num{font-family:var(--font-num);font-weight:700;letter-spacing:.02em}

/* ========== 布局 ========== */
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 clamp(16px,3vw,40px);
}
.main{
  margin-left:var(--sb);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.section{padding:clamp(44px,5.5vw,80px) 0}

/* ========== 侧边 App Shell 导航 ========== */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--sb);
  z-index:120;
  display:flex;
  flex-direction:column;
  padding:22px 16px 18px;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  overflow-y:auto;
  overflow-x:hidden;
  transition:width .22s var(--ease),transform .28s var(--ease);
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:2px 8px 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:18px;
}
.brand-mark{
  width:40px;
  height:40px;
  flex:0 0 40px;
  border-radius:12px;
  background:var(--brand-grad);
  color:#fff;
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
}
.brand-name{
  display:block;
  color:#fff;
  font-size:14.5px;
  font-weight:700;
  line-height:1.3;
}
.brand-sub{
  display:block;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.40);
}
.nav{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.nav-label{
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.36);
  padding:0 12px 8px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  padding:10px 12px;
  border-radius:12px;
  font-size:14.5px;
  color:rgba(255,255,255,.74);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,74,28,.12);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:22px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.nav-ico{
  width:20px;
  height:20px;
  flex:0 0 20px;
  display:inline-flex;
  color:currentColor;
}
.nav-ico svg{width:100%;height:100%;display:block}
.sb-foot{
  margin-top:auto;
  padding-top:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.sb-btn{width:100%}
.sb-status{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:12.5px;
  color:rgba(255,255,255,.52);
}
.sb-status .dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 0 4px rgba(31,169,113,.16);
}

/* ========== 移动端顶栏 / 抽屉 ========== */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:60px;
  z-index:110;
  align-items:center;
  justify-content:space-between;
  padding:0 14px;
  background:var(--ink-900);
  color:#fff;
}
.brand-mini{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:14px;
  font-weight:700;
}
.brand-mini .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:13px}
.hamburger{
  width:44px;
  height:44px;
  border:0;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
  transition:background .2s var(--ease);
}
.hamburger:hover{background:rgba(255,255,255,.16)}
.hamburger span{width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .2s var(--ease)}
.backdrop{
  display:none;
  position:fixed;
  inset:0;
  z-index:115;
  background:rgba(21,24,29,.58);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s var(--ease);
}
.backdrop.show{opacity:1;pointer-events:auto}

/* ========== 按钮 / 徽章 ========== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  border:0;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:var(--brand-grad);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,74,28,.26);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  background:transparent;
  border:1.5px solid var(--ink-900);
  color:var(--ink-900);
}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-on-dark{
  background:rgba(255,255,255,.08);
  border:1.5px solid rgba(255,255,255,.35);
  color:#fff;
}
.btn-on-dark:hover{background:#fff;color:var(--ink-900)}
.btn[disabled],.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.badge-lime{background:var(--accent);color:var(--accent-ink)}
.badge-dark{background:var(--ink-900);color:var(--accent);font-family:var(--font-num);font-weight:700}
.badge-line{background:#fff;border:1px solid rgba(255,74,28,.4);color:var(--brand)}
.badge-line .num{font-size:13px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--brand-2);
}
.eyebrow::before{
  content:"";
  width:10px;
  height:10px;
  border-radius:3px;
  background:var(--brand-grad);
  flex:0 0 10px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
  white-space:nowrap;
  transition:gap .2s var(--ease);
}
.text-link:hover{gap:10px}

/* ========== 分类页头 ========== */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  border-radius:0 0 var(--r-xl) var(--r-xl);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.34;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(21,24,29,.94) 0%,rgba(21,24,29,.74) 52%,rgba(255,74,28,.46) 100%);
}
.cat-hero .container{
  position:relative;
  z-index:2;
  padding-top:clamp(26px,4vw,48px);
  padding-bottom:clamp(32px,5vw,60px);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:clamp(16px,2vw,26px);
}
.crumb a{color:rgba(255,255,255,.78);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(255,255,255,.34)}
.cat-hero h1{
  color:#fff;
  margin:14px 0 14px;
  max-width:16em;
}
.cat-hero .lead{
  max-width:46em;
  font-size:clamp(15px,1.4vw,17px);
  color:rgba(255,255,255,.82);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:clamp(20px,2.6vw,30px);
}
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin-top:clamp(24px,3vw,36px);
  max-width:860px;
}
.stat{
  background:rgba(255,255,255,.96);
  border-radius:var(--r-m);
  padding:14px 16px;
  box-shadow:var(--sh-1);
}
.stat-num{
  display:block;
  font-family:var(--font-num);
  font-weight:700;
  font-size:clamp(24px,2.4vw,31px);
  line-height:1;
  color:var(--brand);
}
.stat-label{
  display:block;
  margin-top:7px;
  font-size:12.5px;
  color:var(--ink-500);
}

/* ========== 板块标题 ========== */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:clamp(20px,2.6vw,32px);
}
.sec-head h2{margin-top:10px}
.sec-head p{
  max-width:44em;
  margin-top:8px;
  font-size:15px;
  color:var(--ink-500);
}

/* ========== 时间轴 ========== */
.timeline{
  list-style:none;
  position:relative;
}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;
  top:10px;
  bottom:10px;
  width:2px;
  background:linear-gradient(180deg,rgba(255,74,28,.65),rgba(255,176,32,.25));
}
.tl-item{
  position:relative;
  padding-left:58px;
  margin-bottom:16px;
}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;
  left:0;
  top:0;
  width:40px;
  height:40px;
  border-radius:14px;
  background:var(--ink-900);
  color:var(--accent);
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:15px;
  box-shadow:var(--sh-1);
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:clamp(18px,2vw,24px);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tl-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-3);
  border-color:rgba(255,74,28,.28);
}
.tl-card p{margin-top:8px;font-size:15px;color:var(--ink-500)}
.card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.tl-meta{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  color:var(--ink-500);
}
.tl-meta li{display:flex;align-items:center;gap:7px}
.tl-meta li::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--brand-2);
  flex:0 0 6px;
}

/* ========== 验证方式行卡 ========== */
.mode-list{display:flex;flex-direction:column;gap:12px}
.mode-row{
  display:grid;
  grid-template-columns:118px minmax(0,1fr) auto auto;
  align-items:center;
  gap:clamp(14px,2vw,26px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:clamp(14px,1.8vw,20px) clamp(16px,2vw,26px);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mode-row:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-3);
  border-color:rgba(255,74,28,.3);
}
.mode-num{
  font-family:var(--font-num);
  font-weight:700;
  font-size:36px;
  line-height:1;
  color:var(--ink-900);
}
.mode-num small{font-size:14px;color:var(--ink-500);margin-left:3px}
.mode-body h3{font-size:18px}
.mode-body p{margin-top:4px;font-size:14px;color:var(--ink-500)}
.mode-arrow{
  width:34px;
  height:34px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--bg-base);
  color:var(--brand);
  flex:0 0 34px;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.mode-row:hover .mode-arrow{background:var(--brand);color:#fff;transform:translateX(4px)}
.mode-arrow svg{width:16px;height:16px}

/* ========== 维护节奏卡 ========== */
.rhythm-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(14px,2vw,22px);
}
.rhythm-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:clamp(20px,2.2vw,26px);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rhythm-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--brand-grad);
}
.rhythm-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.rhythm-time{
  font-family:var(--font-num);
  font-weight:700;
  font-size:clamp(24px,2.4vw,30px);
  line-height:1;
  color:var(--brand);
}
.rhythm-card h3{margin-top:12px;font-size:17.5px}
.rhythm-card p{margin-top:8px;font-size:14px;color:var(--ink-500)}
.rhythm-card.dark{
  background:var(--ink-900);
  border-color:var(--ink-900);
}
.rhythm-card.dark h3{color:#fff}
.rhythm-card.dark p{color:rgba(255,255,255,.66)}
.rhythm-card.dark .rhythm-time{color:var(--accent)}

/* ========== 核对清单 ========== */
.check-wrap{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:clamp(22px,3vw,44px);
  align-items:center;
}
.check-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.check-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:16px 18px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{transform:translateY(-2px);border-color:rgba(255,74,28,.3);box-shadow:var(--sh-1)}
.check-ico{
  width:26px;
  height:26px;
  flex:0 0 26px;
  border-radius:9px;
  background:var(--accent);
  color:var(--accent-ink);
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:13px;
}
.check-item h3{font-size:16.5px}
.check-item p{margin-top:2px;font-size:14px;color:var(--ink-500)}
.figure{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#EFE9E0;
}
.figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.figure:hover img{transform:scale(1.04)}
.figure figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  right:16px;
  background:rgba(21,24,29,.76);
  color:#fff;
  font-size:13px;
  padding:10px 14px;
  border-radius:var(--r-m);
  backdrop-filter:blur(4px);
}

/* ========== FAQ ========== */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 clamp(26px,4vw,52px);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  background:none;
  border:0;
  padding:18px 0;
  display:flex;
  align-items:center;
  gap:14px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-idx{
  font-family:var(--font-num);
  font-weight:700;
  font-size:14px;
  color:var(--brand);
  flex:0 0 auto;
}
.faq-ico{
  position:relative;
  width:22px;
  height:22px;
  flex:0 0 22px;
  margin-left:auto;
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-ico::before{left:0;right:0;top:50%;height:2px;transform:translateY(-50%)}
.faq-ico::after{top:0;bottom:0;left:50%;width:2px;transform:translateX(-50%)}
.faq-item.open .faq-ico::after{transform:translateX(-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a p{
  margin:0 0 18px;
  padding-left:16px;
  border-left:3px solid var(--brand);
  font-size:15px;
  color:var(--ink-500);
}
.faq-item.open .faq-a{max-height:340px}

/* ========== CTA ========== */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  border-radius:var(--r-xl);
  padding:clamp(24px,3.4vw,46px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-70px;
  top:-70px;
  width:280px;
  height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,74,28,.5),transparent 70%);
  pointer-events:none;
}
.cta-band h2{color:#fff;position:relative;z-index:2}
.cta-band p{
  position:relative;
  z-index:2;
  margin-top:10px;
  max-width:44em;
  font-size:15px;
  color:rgba(255,255,255,.72);
}
.cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* ========== 页脚 ========== */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  margin-top:clamp(44px,5.5vw,80px);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--brand-grad);
}
.site-footer .container{
  padding-top:clamp(36px,5vw,64px);
  padding-bottom:26px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:clamp(24px,3vw,48px);
}
.foot-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:14px;
}
.foot-name{
  display:block;
  color:#fff;
  font-size:16px;
  font-weight:700;
}
.foot-sub{
  display:block;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.42);
}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer p{font-size:14px;line-height:1.75}
.foot-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.foot-links a,.foot-links li{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s var(--ease);
}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.62);
}

/* ========== 响应式 ========== */
@media (max-width:1279px) and (min-width:1000px){
  :root{--sb:76px}
  .sidebar{width:76px;padding:20px 12px}
  .sidebar:hover{width:248px;box-shadow:var(--sh-2)}
  .brand{justify-content:center;padding:2px 0 18px}
  .sidebar:hover .brand{justify-content:flex-start;padding:2px 8px 18px}
  .brand-text,.nav-label,.nav-text,.sb-btn,.sb-status-text{display:none}
  .nav-item{justify-content:center;padding:10px 0}
  .sidebar:hover .brand-text,
  .sidebar:hover .nav-label,
  .sidebar:hover .nav-text,
  .sidebar:hover .sb-btn,
  .sidebar:hover .sb-status-text{display:block}
  .sidebar:hover .nav-item{justify-content:flex-start;padding:10px 12px}
  .sb-btn{display:none;width:100%}
  .sb-status{padding-top:6px}
}

@media (max-width:999px){
  :root{--sb:0px}
  .sidebar{
    width:272px;
    padding:22px 16px 18px;
    transform:translateX(-100%);
    box-shadow:var(--sh-2);
  }
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:60px}
  .mobile-bar{display:flex}
  .backdrop{display:block}
  .cat-hero{border-radius:0}
}

@media (max-width:899px){
  .rhythm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .check-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:767px){
  .faq-grid{grid-template-columns:1fr}
  .mode-row{grid-template-columns:1fr;gap:10px;align-items:flex-start}
  .mode-arrow{display:none}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}

@media (max-width:520px){
  .tl-item{padding-left:46px}
  .tl-node{width:32px;height:32px;border-radius:11px;font-size:13px}
  .timeline::before{left:15px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .check-item{padding:14px}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#15181D;
  --ink-700:#3B4149;
  --ink-500:#6E747C;
  --bg-base:#F7F4EF;
  --bg-alt:#FFFDFA;
  --surface:#FFFFFF;
  --line:#E7E1D8;
  --brand:#FF4A1C;
  --brand-2:#FF8A1F;
  --brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 52%,#FFB020 100%);
  --accent:#D6FF3F;
  --accent-ink:#1A2306;
  --ok:#1FA971;
  --warn:#E0A21A;
  --danger:#D93A1F;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Barlow Condensed","Oswald","PingFang SC",ui-sans-serif,sans-serif;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --side-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ============ 基础重置 ============ */
*,*::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:1.78;
  color:var(--ink-700);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--accent-ink)}
/* ============ 布局骨架 ============ */
.shell{display:flex;min-height:100vh}
.container{
  width:100%;
  max-width:1440px;
  margin:0 auto;
  padding:0 clamp(16px,3vw,40px);
}
/* ============ 左侧 App Shell 导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink-900);
  color:#fff;
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:transform .26s var(--ease),width .26s var(--ease);
  overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{
  flex:0 0 auto;
  width:42px;height:42px;border-radius:12px;
  background:var(--brand-grad);
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:700;font-size:17px;letter-spacing:.04em;
  color:#fff;
  box-shadow:0 6px 18px rgba(255,74,28,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0}
.brand-name{font-size:15px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand-sub{font-family:var(--font-num);font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.5)}
.nav-wrap{display:flex;flex-direction:column;gap:6px;padding-top:18px;flex:1}
.nav-label{
  font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.38);
  padding:0 10px 8px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:46px;
  padding:0 12px;
  border-radius:12px;
  color:rgba(255,255,255,.72);
  font-size:14.5px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{
  background:rgba(255,74,28,.14);
  color:#fff;
  font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-grad);
}
.nav-item.active .nav-ico{color:var(--brand-2)}
.nav-ico{flex:0 0 auto;width:20px;height:20px;display:grid;place-items:center;color:rgba(255,255,255,.6)}
.nav-ico svg{width:19px;height:19px}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-foot{
  display:flex;flex-direction:column;gap:10px;
  padding-top:16px;margin-top:12px;
  border-top:1px solid rgba(255,255,255,.08);
}
.side-btn{
  border:0;cursor:pointer;
  border-radius:999px;
  padding:11px 16px;
  font-size:14px;font-weight:600;
  background:var(--brand-grad);
  color:#fff;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.side-btn:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,74,28,.3)}
.side-btn:active{transform:translateY(0)}
.side-btn.ghost{
  background:transparent;
  border:1.5px solid rgba(255,255,255,.24);
  color:#fff;
}
.side-btn.ghost:hover{background:rgba(255,255,255,.1);box-shadow:none}
.status{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:rgba(255,255,255,.55);
  padding-left:4px;
}
.status .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 0 4px rgba(31,169,113,.16);
}
/* 顶部栏（移动端） */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  background:var(--ink-900);
  color:#fff;
  align-items:center;gap:12px;
  padding:0 16px;
  z-index:70;
}
.topbar .brand-mark{width:34px;height:34px;border-radius:10px;font-size:14px}
.topbar-title{font-size:14.5px;font-weight:700;line-height:1.2}
.hamburger{
  margin-left:auto;
  width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  display:grid;place-items:center;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.scrim{
  display:none;position:fixed;inset:0;background:rgba(21,24,29,.5);
  z-index:55;backdrop-filter:blur(2px);
}
.scrim.show{display:block}
/* ============ 主内容区 ============ */
.main{margin-left:var(--side-w);flex:1;min-width:0;display:flex;flex-direction:column}
main{padding:clamp(20px,2.6vw,36px) 0 0}
.section{padding:clamp(40px,5.4vw,76px) 0}
.section.tight{padding:clamp(28px,3.4vw,48px) 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:clamp(22px,2.6vw,34px);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--ink-500);
  margin-bottom:10px;
}
.eyebrow::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--brand-grad)}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.25;color:var(--ink-900)}
.sec-desc{margin-top:8px;font-size:15px;color:var(--ink-500);max-width:62ch}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14.5px;white-space:nowrap;
}
.link-more svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}
/* ============ 页头 mini-Hero ============ */
.page-hero{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  padding:clamp(26px,3.6vw,52px);
  box-shadow:var(--sh-2);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(21,24,29,.95) 0%,rgba(21,24,29,.72) 52%,rgba(255,74,28,.42) 100%);
}
.page-hero > *{position:relative;z-index:1}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);
  margin-bottom:20px;
}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:rgba(255,255,255,.32)}
.crumbs .now{color:var(--accent)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:var(--accent);color:var(--accent-ink);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;line-height:1.16;letter-spacing:-.01em;
  color:#fff;max-width:22ch;
}
.hero-lead{
  margin-top:14px;
  font-size:clamp(15px,1.6vw,17px);
  color:rgba(255,255,255,.78);
  max-width:56ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;
  border-radius:999px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 26px rgba(255,74,28,.3)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(255,74,28,.26)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-dark{background:var(--ink-900);color:#fff}
.btn-dark:hover{filter:brightness(1.12);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:#fff}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:32px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
}
.stat-chip{
  display:flex;align-items:baseline;gap:8px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
  padding:8px 16px;
}
.stat-chip b{
  font-family:var(--font-num);font-weight:700;font-size:20px;letter-spacing:.02em;
  color:var(--accent);
}
.stat-chip span{font-size:12.5px;color:rgba(255,255,255,.7)}
/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;
  white-space:nowrap;
}
.badge-lime{background:var(--accent);color:var(--accent-ink)}
.badge-dark{background:var(--ink-900);color:#fff}
.badge-dark b{font-family:var(--font-num);color:var(--accent);font-weight:700}
.badge-line{background:#fff;color:var(--brand);border:1px solid rgba(255,74,28,.4)}
/* ============ 对比卡片 ============ */
.cmp-group + .cmp-group{margin-top:34px}
.cmp-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.1em;color:var(--ink-500);
  margin-bottom:16px;
}
.cmp-group-title i{
  font-family:var(--font-num);font-style:normal;font-weight:700;
  color:var(--brand);font-size:15px;letter-spacing:.02em;
}
.cmp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cmp-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(20px,2.2vw,30px);
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.cmp-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,74,28,.3)}
.cmp-card h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.35}
.cmp-sum{margin-top:10px;font-size:15px;color:var(--ink-500)}
.cmp-list{margin-top:18px;display:grid;gap:10px}
.cmp-list li{
  position:relative;padding-left:20px;
  font-size:14.5px;color:var(--ink-700);
}
.cmp-list li::before{
  content:"";position:absolute;left:2px;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--brand-grad);
}
.cmp-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:22px;padding-top:16px;border-top:1px dashed var(--line);
}
.cmp-foot .hint{font-size:13px;color:var(--ink-500)}
/* ============ 字段对照条目 ============ */
.field-list{display:grid;gap:14px}
.field-row{
  display:grid;
  grid-template-columns:118px minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);
  gap:20px;align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px 24px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.field-row:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,74,28,.28)}
.field-row.head{
  background:transparent;border:0;padding:0 24px;
  font-size:12px;letter-spacing:.1em;color:var(--ink-500);
}
.field-row.head:hover{transform:none;box-shadow:none}
.field-name{
  font-weight:700;color:var(--ink-900);font-size:15.5px;
  display:flex;align-items:center;gap:8px;
}
.field-name i{
  font-family:var(--font-num);font-style:normal;font-weight:700;
  font-size:15px;color:var(--brand);letter-spacing:.02em;
}
.field-desc{font-size:14.5px;color:var(--ink-700)}
.field-meta{font-size:13.5px;color:var(--ink-500)}
.field-meta b{display:block;font-size:11.5px;letter-spacing:.08em;color:var(--ink-500);font-weight:600;margin-bottom:2px}
/* ============ FAQ ============ */
.faq-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:0 clamp(24px,3vw,48px);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;gap:14px;
  padding:20px 0;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-num{
  font-family:var(--font-num);font-weight:700;font-size:16px;
  color:var(--brand);letter-spacing:.02em;flex:0 0 auto;line-height:1.6;
}
.faq-mark{
  margin-left:auto;flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);
  display:grid;place-items:center;
  color:var(--ink-500);font-size:17px;line-height:1;
  transition:transform .22s ease,color .22s ease,border-color .22s ease,background .22s ease;
}
.faq-item[open] .faq-mark{
  transform:rotate(45deg);
  background:var(--brand-grad);color:#fff;border-color:transparent;
}
.faq-body{
  padding:0 0 20px 30px;
  border-left:3px solid var(--brand);
  margin-left:2px;
  font-size:14.8px;color:var(--ink-700);
}
.faq-body p + p{margin-top:10px}
/* ============ 反馈表单 ============ */
.feedback-panel{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:clamp(24px,3vw,48px);
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:clamp(24px,3vw,44px);
  box-shadow:var(--sh-1);
}
.feedback-panel h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--ink-900);line-height:1.3}
.feedback-panel p.copy{margin-top:12px;font-size:15px;color:var(--ink-500)}
.point-list{margin-top:20px;display:grid;gap:10px}
.point-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-700)}
.point-list li span{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;
  background:var(--accent);color:var(--accent-ink);
  font-family:var(--font-num);font-weight:700;font-size:12px;
  display:grid;place-items:center;margin-top:4px;
}
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.field-block{margin-bottom:16px}
.field-block label{
  display:block;font-size:13px;font-weight:600;color:var(--ink-900);margin-bottom:8px;
}
.input,.select,.textarea{
  width:100%;
  min-height:50px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  padding:12px 16px;
  font-size:15px;color:var(--ink-900);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.textarea{min-height:112px;resize:vertical;line-height:1.7}
.input::placeholder,.textarea::placeholder{color:#A9AEB6}
.input:focus,.select:focus,.textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(255,74,28,.22);
}
.input:disabled,.select:disabled,.textarea:disabled{
  opacity:.4;cursor:not-allowed;background:var(--bg-base);
}
.form-note{font-size:12.5px;color:var(--ink-500);margin-top:4px}
.form-msg{
  display:none;margin-top:14px;padding:12px 16px;border-radius:var(--r-md);font-size:14px;
}
.form-msg.ok{display:block;background:rgba(31,169,113,.1);color:#12744E;border:1px solid rgba(31,169,113,.3)}
.form-msg.err{display:block;background:rgba(217,58,31,.08);color:var(--danger);border:1px solid rgba(217,58,31,.3)}
/* ============ 相关推荐 ============ */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.thumb{
  position:relative;aspect-ratio:16/10;background:var(--bg-base);overflow:hidden;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rec-card:hover .thumb img{transform:scale(1.04)}
.thumb .tag{position:absolute;left:12px;top:12px}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17.5px;font-weight:700;color:var(--ink-900);line-height:1.4}
.rec-body p{font-size:14.5px;color:var(--ink-500);flex:1}
.rec-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14px;
}
.rec-link svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.rec-card:hover .rec-link svg{transform:translateX(4px)}
/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--ink-900);
  color:#fff;
  padding:clamp(26px,3.4vw,46px);
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,74,28,.5) 0%,rgba(255,74,28,0) 68%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;line-height:1.3;max-width:24ch}
.cta-band p{margin-top:10px;font-size:14.8px;color:rgba(255,255,255,.7);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}
/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(40px,5vw,72px);
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding-top:4px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--brand-grad);
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:clamp(24px,3vw,48px);
  padding:clamp(36px,4.4vw,60px) 0 32px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-name{display:block;font-size:15.5px;font-weight:700;color:#fff}
.foot-sub{display:block;font-family:var(--font-num);font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.42)}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:38ch}
.site-footer h4{
  font-size:13px;letter-spacing:.12em;color:#fff;font-weight:700;
  margin-bottom:16px;
}
.foot-links{display:grid;gap:11px}
.foot-links a,.foot-links li{font-size:13.8px;color:rgba(255,255,255,.62)}
.foot-links a{transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.foot-links a:hover{color:var(--accent);transform:translateX(3px)}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.62);
}
/* ============ 响应式 ============ */
@media (max-width:1439px){
  .cmp-grid{gap:20px}
}
@media (max-width:1279px) and (min-width:1000px){
  :root{--side-w:76px}
  .sidebar{padding:20px 10px;align-items:center}
  .brand{padding:4px 0 20px;justify-content:center}
  .brand-text,.nav-label,.nav-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item.active::before{left:-10px}
  .side-foot{display:none}
  .cmp-grid{grid-template-columns:repeat(2,1fr)}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .field-row{grid-template-columns:100px minmax(0,1.4fr) minmax(0,1fr);gap:16px}
  .field-row .field-meta:last-child{display:none}
}
@media (max-width:999px){
  .topbar{display:flex}
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    box-shadow:0 20px 60px rgba(0,0,0,.3);
    padding-top:20px;
  }
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:60px}
  main{padding-top:18px}
  .cmp-grid{grid-template-columns:1fr}
  .feedback-panel{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .field-row{
    grid-template-columns:1fr;
    gap:10px;padding:18px 20px;
  }
  .field-row.head{display:none}
  .field-meta b{display:inline;margin-right:6px}
  .field-meta b::after{content:"："}
}
@media (max-width:767px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .form-row{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column}
  .faq-body{padding-left:24px}
}
@media (max-width:479px){
  .stat-chip{padding:7px 12px}
  .stat-chip b{font-size:17px}
  .page-hero{border-radius:var(--r-lg)}
  .btn{padding:12px 20px;font-size:14.5px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --ink-900:#15181D;
  --ink-700:#3B4149;
  --ink-500:#6E747C;
  --bg-base:#F7F4EF;
  --bg-alt:#FFFDFA;
  --surface:#FFFFFF;
  --line:#E7E1D8;
  --brand:#FF4A1C;
  --brand-2:#FF8A1F;
  --brand-3:#FFB020;
  --brand-grad:linear-gradient(135deg,#FF4A1C 0%,#FF8A1F 52%,#FFB020 100%);
  --accent:#D6FF3F;
  --accent-ink:#1A2306;
  --ok:#1FA971;
  --warn:#E0A21A;
  --danger:#D93A1F;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Barlow Condensed","Oswald",ui-sans-serif,system-ui,sans-serif;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(21,24,29,.06);
  --sh-2:0 12px 32px rgba(21,24,29,.10);
  --sh-3:0 18px 44px rgba(255,74,28,.16);
  --shell-w:248px;
  --gap:24px;
}
@media (min-width:1000px) and (max-width:1279px){
  :root{--shell-w:76px;}
}
*,*::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:1.78;
  color:var(--ink-700);
  background:var(--bg-base);
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:1440px;
  margin:0 auto;
  padding:0 clamp(16px,3vw,40px);
}
.container-narrow{max-width:1100px;}

/* ============ 左侧 App Shell ============ */
.shell{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  width:var(--shell-w);
  background:var(--ink-900);
  display:flex;
  flex-direction:column;
  padding:20px 16px 22px;
  overflow-y:auto;
  z-index:80;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:4px 8px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-mark{
  width:40px;
  height:40px;
  flex:0 0 40px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:var(--brand-grad);
  color:#fff;
  font-family:var(--font-num);
  font-weight:700;
  font-size:18px;
  letter-spacing:.04em;
}
.brand-txt{min-width:0;}
.brand-name{
  display:block;
  color:#fff;
  font-weight:700;
  font-size:15px;
  line-height:1.32;
  letter-spacing:.01em;
}
.brand-sub{
  display:block;
  color:rgba(255,255,255,.42);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
}
.nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  margin-top:16px;
}
.nav-label{
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.34);
  padding:8px 12px 6px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  padding:9px 12px;
  border-radius:12px;
  color:rgba(255,255,255,.68);
  font-size:14.5px;
  transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active{background:rgba(255,74,28,.12);color:#fff;font-weight:600;}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--brand);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;display:grid;place-items:center;}
.nav-ico svg{width:20px;height:20px;}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.shell-foot{
  margin-top:auto;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.status{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:rgba(255,255,255,.6);
}
.dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(214,255,63,.16);
}
.pill-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:40px;
  padding:9px 16px;
  border:1.5px solid rgba(255,255,255,.22);
  border-radius:var(--r-pill);
  background:transparent;
  color:#fff;
  font-size:13.5px;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.pill-btn:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);transform:translateY(-1px);}
.pill-btn:active{transform:none;}
.pill-btn.is-on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600;}

/* 顶部栏（移动端） */
.topbar{
  position:sticky;
  top:0;
  z-index:70;
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px;
  background:rgba(21,24,29,.97);
  box-shadow:0 6px 20px rgba(21,24,29,.18);
}
.topbar .brand{padding:0;border:0;}
.topbar .brand-mark{width:34px;height:34px;flex-basis:34px;border-radius:10px;font-size:15px;}
.topbar .brand-name{font-size:14px;}
.burger{
  width:44px;
  height:44px;
  display:grid;
  place-items:center;
  border:1.5px solid rgba(255,255,255,.22);
  border-radius:12px;
  background:transparent;
  cursor:pointer;
}
.burger span{
  display:block;
  width:18px;
  height:2px;
  background:#fff;
  border-radius:2px;
  margin:3px 0;
}
.mask{
  position:fixed;
  inset:0;
  background:rgba(21,24,29,.55);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s ease;
  z-index:75;
}
.mask.show{opacity:1;pointer-events:auto;}

/* ============ 主区域 ============ */
.page{min-height:100vh;padding-bottom:clamp(40px,6vw,80px);}
@media (min-width:1000px){
  .page{margin-left:var(--shell-w);}
}

/* ============ Hero ============ */
.hero-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  margin-top:clamp(18px,2.6vw,30px);
  padding:clamp(24px,4vw,52px);
  background:var(--ink-900);
  color:#fff;
  box-shadow:var(--sh-2);
}
.hero-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(118deg,rgba(21,24,29,.96) 0%,rgba(21,24,29,.86) 46%,rgba(255,74,28,.52) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.hero-inner{position:relative;z-index:1;max-width:900px;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:18px;
}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{opacity:.5;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--accent);
  color:var(--accent-ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}
.hero-card h1{
  margin:18px 0 14px;
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.01em;
  color:#fff;
}
.hero-lead{
  max-width:640px;
  font-size:16.5px;
  color:rgba(255,255,255,.82);
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:28px;
  padding:4px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  line-height:1.4;
}
.badge-num{
  font-family:var(--font-num);
  font-weight:700;
  font-size:16px;
  letter-spacing:.02em;
}
.badge-dark{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;}
.badge-dark .badge-num{color:var(--accent);}
.badge-lime{background:var(--accent);color:var(--accent-ink);font-weight:600;}
.badge-lime .badge-num{color:var(--accent-ink);}
.badge-outline{background:#fff;border:1.5px solid var(--brand);color:var(--brand);font-weight:600;}
.badge-outline .badge-num{color:var(--brand);}

/* ============ 通用板块 ============ */
.section{margin-top:clamp(48px,7vw,96px);}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:28px;
}
.section-head .eyebrow-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand);
  font-weight:700;
  margin-bottom:10px;
}
.eyebrow-line::before{
  content:"";
  width:16px;
  height:6px;
  border-radius:2px;
  background:var(--brand-grad);
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.25;
  color:var(--ink-900);
  letter-spacing:-.005em;
}
.section-head p{
  margin-top:8px;
  max-width:660px;
  font-size:14.5px;
  color:var(--ink-500);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:600;
  font-size:14.5px;
  white-space:nowrap;
}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover .arrow{transform:translateX(4px);}

/* ============ 指标徽章网格 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(196px,1fr));
  gap:20px;
}
.stat-card{
  position:relative;
  padding:clamp(18px,2vw,26px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s cubic-bezier(.22,.61,.36,1);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.stat-card .k-label{
  font-size:13px;
  color:var(--ink-500);
}
.stat-card .k-value{
  font-family:var(--font-num);
  font-weight:700;
  font-size:clamp(30px,3.4vw,40px);
  line-height:1.1;
  color:var(--ink-900);
  margin:6px 0 2px;
}
.stat-card .k-value em{
  font-style:normal;
  font-size:16px;
  color:var(--ink-500);
  margin-left:4px;
  font-family:var(--font-sans);
  font-weight:500;
}
.stat-card .k-note{font-size:12.5px;color:var(--ink-500);}
.stat-card.is-accent{background:var(--ink-900);border-color:var(--ink-900);}
.stat-card.is-accent .k-label,.stat-card.is-accent .k-note{color:rgba(255,255,255,.6);}
.stat-card.is-accent .k-value{color:var(--accent);}

/* ============ 排行榜行卡 ============ */
.rank-board{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:clamp(18px,2.4vw,30px);
  box-shadow:var(--sh-1);
}
.rank-list{display:flex;flex-direction:column;gap:14px;}
.rank-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) auto;
  align-items:center;
  gap:18px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease,border-color .22s ease;
}
.rank-item:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,74,28,.28);}
.rank-no{
  font-family:var(--font-num);
  font-weight:700;
  font-size:28px;
  color:var(--brand);
  letter-spacing:.02em;
}
.rank-body{min-width:0;}
.rank-body h3{
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.4;
}
.rank-body p{
  font-size:13.5px;
  color:var(--ink-500);
  margin-top:4px;
}
.rank-bar{
  margin-top:10px;
  height:8px;
  border-radius:var(--r-pill);
  background:#F0EBE3;
  overflow:hidden;
}
.rank-bar span{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:var(--brand-grad);
}
.rank-pct{
  font-family:var(--font-num);
  font-weight:700;
  font-size:26px;
  color:var(--ink-900);
  white-space:nowrap;
}
.rank-pct small{font-size:13px;font-family:var(--font-sans);color:var(--ink-500);font-weight:500;margin-left:2px;}

/* ============ 自检仪表 ============ */
.gauge-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
}
.gauge-card{
  padding:clamp(18px,2vw,26px);
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease;
}
.gauge-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.gauge-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.gauge-top h3{font-size:17px;font-weight:600;color:var(--ink-900);}
.gauge-val{
  font-family:var(--font-num);
  font-weight:700;
  font-size:24px;
  color:var(--brand);
}
.gauge-track{
  height:10px;
  border-radius:var(--r-pill);
  background:#F0EBE3;
  overflow:hidden;
}
.gauge-track span{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:var(--brand-grad);
}
.gauge-card p{
  margin-top:12px;
  font-size:13.5px;
  color:var(--ink-500);
}
.gauge-card.is-lime .gauge-track span{background:linear-gradient(135deg,#D6FF3F,#A8E01F);}
.gauge-card.is-lime .gauge-val{color:#6E8F12;}

/* ============ 版本规格卡 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:22px;
}
.spec-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease;
}
.spec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.spec-thumb{
  position:relative;
  aspect-ratio:16/10;
  background:#EFE9E0;
  overflow:hidden;
}
.spec-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .32s ease;
}
.spec-card:hover .spec-thumb img{transform:scale(1.04);}
.spec-thumb .tag{
  position:absolute;
  top:12px;
  left:12px;
}
.tag{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:3px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:var(--ink-900);
  color:var(--accent);
}
.tag-lime{background:var(--accent);color:var(--accent-ink);}
.tag-white{background:rgba(255,255,255,.94);color:var(--brand);border:1px solid rgba(255,74,28,.28);}
.spec-body{
  padding:clamp(18px,2vw,24px);
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.spec-body h3{font-size:18px;font-weight:700;color:var(--ink-900);}
.spec-body p{font-size:13.8px;color:var(--ink-500);}
.spec-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:auto;
  padding-top:6px;
}
.meta-chip{
  font-size:12.5px;
  padding:4px 10px;
  border-radius:var(--r-sm);
  background:#F4F0E9;
  color:var(--ink-700);
}
.meta-chip strong{font-family:var(--font-num);font-size:14px;color:var(--brand);margin-right:4px;}

/* ============ 数据条（深色） ============ */
.data-strip{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:1px;
  background:rgba(255,255,255,.1);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.data-strip .cell{
  background:var(--ink-900);
  padding:clamp(20px,2.4vw,30px);
}
.data-strip .cell .lab{font-size:13px;color:rgba(255,255,255,.58);}
.data-strip .cell .num{
  font-family:var(--font-num);
  font-weight:700;
  font-size:clamp(28px,3.2vw,38px);
  color:var(--accent);
  line-height:1.12;
  margin:6px 0 4px;
}
.data-strip .cell .txt{font-size:13px;color:rgba(255,255,255,.62);}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 40px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 0;
  border:0;
  background:transparent;
  text-align:left;
  cursor:pointer;
}
.faq-no{
  font-family:var(--font-num);
  font-weight:700;
  font-size:18px;
  color:var(--brand);
  flex:0 0 auto;
}
.faq-txt{
  flex:1;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.45;
}
.faq-sign{
  position:relative;
  width:20px;
  height:20px;
  flex:0 0 20px;
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--ink-700);
  border-radius:2px;
  transition:transform .22s ease,background .22s ease;
}
.faq-sign::before{left:0;top:9px;width:20px;height:2px;}
.faq-sign::after{top:0;left:9px;width:2px;height:20px;}
.faq-item.open .faq-sign::after{transform:rotate(90deg);}
.faq-item.open .faq-sign::before,.faq-item.open .faq-sign::after{background:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a p{
  font-size:14.5px;
  color:var(--ink-500);
  padding:0 0 20px 36px;
  border-left:3px solid var(--brand);
  padding-left:16px;
  margin-left:0;
}

/* ============ 相关推荐 ============ */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.rec-thumb{aspect-ratio:16/10;background:#EFE9E0;overflow:hidden;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rec-body h3{font-size:17px;font-weight:600;color:var(--ink-900);}
.rec-body p{font-size:13.5px;color:var(--ink-500);}
.rec-body .text-link{margin-top:auto;}

/* ============ CTA + 表单 ============ */
.cta-band{
  border-radius:var(--r-xl);
  background:var(--ink-900);
  color:#fff;
  padding:clamp(24px,3.4vw,46px);
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:28px;
  box-shadow:var(--sh-2);
}
.cta-band h2{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:700;
  line-height:1.3;
  color:#fff;
}
.cta-band p{
  margin-top:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  max-width:620px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--brand-grad);color:#fff;border-color:transparent;}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:none;filter:brightness(.98);}
.btn-ghost{border-color:rgba(255,255,255,.42);color:#fff;background:transparent;}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff;}
.btn-ink{border-color:var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-ink:hover{background:var(--ink-900);color:#fff;}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.support-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:clamp(20px,2.8vw,36px);
  box-shadow:var(--sh-1);
}
.back-form{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:22px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field-wide{grid-column:1/-1;}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-900);}
.field input,.field select,.field textarea{
  width:100%;
  min-height:50px;
  padding:12px 16px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--bg-alt);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#D9D1C5;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(255,74,28,.25);
}
.field input::placeholder,.field textarea::placeholder{color:#A6A29B;}
.form-foot{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
}
.form-note{
  font-size:13.5px;
  padding:10px 16px;
  border-radius:var(--r-sm);
  background:rgba(31,169,113,.12);
  color:#14744E;
  border-left:3px solid var(--ok);
}
.form-hint{font-size:13px;color:var(--ink-500);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  border-top:4px solid transparent;
  border-image:var(--brand-grad) 1;
  padding:clamp(36px,5vw,64px) 0 24px;
  font-size:14px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.foot-brand .brand-mark{width:38px;height:38px;flex-basis:38px;border-radius:11px;font-size:16px;}
.foot-name{display:block;color:#fff;font-weight:700;font-size:15.5px;}
.foot-sub{display:block;font-family:var(--font-num);font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.4);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.site-footer p{color:rgba(255,255,255,.62);font-size:13.5px;max-width:340px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a,.foot-links li{color:rgba(255,255,255,.62);font-size:13.5px;line-height:1.6;}
.foot-links a{transition:color .2s ease,padding-left .2s ease;}
.foot-links a:hover{color:var(--accent);padding-left:4px;}
.foot-bottom{
  margin-top:36px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.62);
}

/* ============ 响应式 ============ */
@media (min-width:1000px) and (max-width:1279px){
  .shell{padding:18px 12px 20px;align-items:center;}
  .brand{justify-content:center;padding:4px 0 16px;}
  .brand-txt,.nav-text,.nav-label,.shell-foot .status span.txt{display:none;}
  .nav{width:100%;align-items:center;}
  .nav-item{justify-content:center;padding:10px 0;width:52px;}
  .nav-item.active::before{top:8px;bottom:8px;}
  .pill-btn{width:48px;padding:0;font-size:0;}
  .pill-btn svg,.pill-btn .ico{width:18px;height:18px;}
  .shell-foot{align-items:center;width:100%;}
}
@media (max-width:999px){
  .shell{
    width:280px;
    padding:20px 16px;
    transform:translateX(-100%);
    transition:transform .28s cubic-bezier(.22,.61,.36,1);
    box-shadow:0 0 40px rgba(0,0,0,.4);
  }
  .shell.open{transform:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-bottom:48px;}
  .spec-grid,.rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-grid{grid-template-columns:1fr;gap:0;}
  .cta-band{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .hero-badges{gap:10px;}
  .badge{font-size:12.5px;padding:4px 12px;}
  .rank-item{grid-template-columns:44px minmax(0,1fr);gap:12px;}
  .rank-pct{grid-column:2;justify-self:start;}
  .rank-no{font-size:24px;}
  .spec-grid,.rec-grid{grid-template-columns:1fr;}
  .back-form{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .foot-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:479px){
  .hero-card{border-radius:var(--r-lg);}
  .data-strip .cell{padding:18px;}
  .stat-grid{gap:14px;}
  .btn{width:100%;}
  .text-link{font-size:14px;}
}