/* roulang page: index */
/* ================= 设计令牌 ================= */
:root{
  --ink:#0E2A24;
  --brand:#1D6B57;
  --brand-soft:#E4EFEA;
  --accent:#C86A34;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --text:#222C28;
  --text-2:#6B7370;
  --text-3:#9AA19D;

  --brand-06:rgba(29,107,87,.06);
  --brand-12:rgba(29,107,87,.12);
  --brand-20:rgba(29,107,87,.2);
  --brand-30:rgba(29,107,87,.3);
  --ink-06:rgba(14,42,36,.06);
  --ink-18:rgba(14,42,36,.18);
  --accent-08:rgba(200,106,52,.08);
  --accent-16:rgba(200,106,52,.16);
  --white-06:rgba(255,255,255,.06);
  --white-08:rgba(255,255,255,.08);
  --white-16:rgba(255,255,255,.16);
  --white-70:rgba(255,255,255,.7);

  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;

  --shadow-1:0 1px 2px rgba(14,42,36,.06);
  --shadow-2:0 10px 30px -12px rgba(14,42,36,.18);

  --ease:cubic-bezier(.22,.61,.36,1);
  --t-hover:160ms;
  --t-toggle:320ms;
  --t-reveal:520ms;

  --container:1200px;
  --sp-section:96px;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Inter","SFMono-Regular",Consolas,monospace;
}

/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:116px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none;transition:color var(--t-hover) var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-20)}

/* ================= 布局 ================= */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section-tight{padding:56px 0 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.25;
  letter-spacing:-.01em;
  font-weight:700;
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.8}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.16em;color:var(--brand);
  margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-30)}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;border:1px solid transparent;white-space:nowrap;
  transition:background var(--t-hover) var(--ease),color var(--t-hover) var(--ease),
             border-color var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease),
             transform var(--t-hover) var(--ease),filter var(--t-hover) var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand);color:var(--surface)}
.btn-primary:hover{color:var(--surface);filter:brightness(.94);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--surface)}
.btn-accent:hover{color:var(--surface);filter:brightness(.94);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--surface)}
.btn-outline-light{background:transparent;border-color:var(--white-16);color:var(--surface)}
.btn-outline-light:hover{border-color:var(--brand-soft);color:var(--brand-soft);transform:translateY(-2px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sheen{position:relative;overflow:hidden}
.btn-sheen::after{
  content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,var(--white-16),transparent);
  transform:skewX(-18deg);
  animation:sheen 700ms var(--ease) 1 both;
}
@keyframes sheen{to{left:150%}}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:500}
.btn-link .fa-arrow-right-long{transition:transform var(--t-hover) var(--ease)}
.btn-link:hover .fa-arrow-right-long{transform:translateX(3px)}

/* ================= 徽章 / 标签 ================= */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;line-height:1;padding:6px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);white-space:nowrap;
}
.badge-accent{background:var(--accent);color:var(--surface)}
.badge-outline{background:var(--surface);border:1px solid var(--line);color:var(--text-2)}
.tag{display:inline-flex;font-size:12.5px;padding:4px 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand)}

/* ================= 页头 ================= */
.site-header{position:sticky;top:0;z-index:100}
.topbar{background:var(--ink);border-bottom:1px solid var(--white-08)}
.topbar-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  color:var(--surface);letter-spacing:.02em;white-space:nowrap;
}
.logo-mark{width:10px;height:10px;border-radius:3px;background:var(--accent);transform:rotate(45deg);flex:0 0 auto;transition:transform var(--t-toggle) var(--ease)}
.logo:hover{color:var(--brand-soft)}
.logo:hover .logo-mark{transform:rotate(135deg)}

.search{
  display:flex;align-items:center;gap:8px;
  height:40px;width:220px;padding:0 16px;
  background:var(--white-08);border:1px solid var(--white-16);border-radius:var(--r-pill);
  transition:width var(--t-toggle) var(--ease),border-color var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease);
}
.search:focus-within{width:300px;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-30)}
.search i{font-size:13px;color:var(--white-70)}
.search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--surface);font-size:14px}
.search input::placeholder{color:var(--white-70)}
.topbar-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.link-plain{font-size:14px;color:var(--white-70)}
.link-plain:hover{color:var(--brand-soft)}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--white-16);color:var(--surface);place-items:center;
}
.search-toggle:hover{border-color:var(--brand-soft);color:var(--brand-soft)}
.mobile-search{display:none;padding-bottom:14px}
.mobile-search.open{display:block}
.mobile-search .search{display:flex;width:100%}
.mobile-search .search:focus-within{width:100%}

.channelbar{background:var(--surface);border-bottom:1px solid var(--line);position:relative;transition:box-shadow var(--t-hover) var(--ease)}
.site-header.is-stuck .channelbar{box-shadow:var(--shadow-1)}
.channelbar::after{
  content:"";position:absolute;right:0;top:0;bottom:1px;width:24px;
  background:linear-gradient(90deg,transparent,var(--surface));pointer-events:none;
}
.channels{
  display:flex;align-items:stretch;gap:4px;height:48px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channels::-webkit-scrollbar{display:none}
.channels li{flex:0 0 auto;scroll-snap-align:start}
.channels a{
  position:relative;display:inline-flex;align-items:center;height:48px;
  padding:0 16px;font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color var(--t-hover) var(--ease),background var(--t-hover) var(--ease);
}
.channels a:hover{color:var(--brand);background:var(--brand-06)}
.channels a.active{color:var(--brand);font-weight:600}
.channels a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}

/* ================= Hero ================= */
.hero{
  position:relative;overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(105deg,rgba(14,42,36,.96) 0%,rgba(14,42,36,.88) 46%,rgba(14,42,36,.72) 100%),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:var(--surface);
  padding:76px 0 84px;
}
.hero::before{
  content:"";position:absolute;top:-32%;right:-12%;width:780px;height:780px;
  background:repeating-radial-gradient(circle at center,transparent 0 58px,var(--white-08) 58px 59px);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--white-08) 1px,transparent 1px),
                   linear-gradient(90deg,var(--white-08) 1px,transparent 1px);
  background-size:88px 88px;opacity:.45;
  -webkit-mask-image:radial-gradient(120% 90% at 12% 8%,#000 0%,transparent 70%);
  mask-image:radial-gradient(120% 90% at 12% 8%,#000 0%,transparent 70%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy .badge{margin-bottom:22px}
.hero h1{
  font-family:var(--font-serif);
  font-size:clamp(34px,5vw,56px);
  line-height:1.15;letter-spacing:-.01em;font-weight:700;
  margin-bottom:20px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--white-70);max-width:58ch;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:22px}
.hero-meta{font-size:13px;color:var(--white-70);letter-spacing:.02em}
.hero-meta span+span::before{content:"·";margin:0 10px;opacity:.55}
.hero-visual{position:relative}
.device-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--white-16);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.65);
}
.device-frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.float-badge{
  position:absolute;right:-14px;bottom:26px;
  display:flex;align-items:center;gap:10px;
  background:var(--surface);color:var(--text);
  border-radius:var(--r-md);padding:12px 18px;box-shadow:var(--shadow-2);
  font-size:13px;line-height:1.3;
}
.float-badge strong{font-family:var(--font-mono);font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums}

/* ================= 数据条 ================= */
.stats{padding:56px 0 0}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 28px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.2vw,38px);line-height:1.1;font-weight:600;
  color:var(--accent);letter-spacing:-.02em;
}
.stat-label{display:block;margin-top:8px;font-size:14px;color:var(--text-2)}
.stat-note{display:block;margin-top:4px;font-size:12.5px;color:var(--text-3)}

/* ================= Bento 价值区 ================= */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bcard{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;overflow:hidden;
  transition:transform var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease);
}
.bcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-30)}
.bcard-num{
  display:block;font-family:var(--font-serif);font-size:54px;line-height:1;
  color:var(--accent);opacity:.2;margin-bottom:14px;
}
.bcard h3{font-size:22px;line-height:1.4;margin-bottom:10px;font-weight:600}
.bcard p{color:var(--text-2);font-size:15px;line-height:1.8}
.bcard--lg{grid-column:span 6;display:flex;flex-direction:column;gap:20px}
.bcard--lg img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md)}
.bcard--sm{grid-column:span 3}
.bcard--wide{
  grid-column:span 12;display:grid;grid-template-columns:auto 1fr auto;
  align-items:center;gap:32px;background:var(--brand-soft);border-color:transparent;
}
.bcard--wide:hover{border-color:var(--brand-30)}
.bcard--wide .bcard-num{font-size:44px;margin-bottom:0}
.bcard--wide .bcard-text h3{margin-bottom:6px}

/* ================= 轮播 ================= */
.carousel-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 28px;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.carousel-track::-webkit-scrollbar{display:none}
.carousel-track:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:var(--r-md)}
.slide{
  flex:0 0 380px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease);
}
.slide:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-30)}
.slide-img{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.slide-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-toggle) var(--ease)}
.slide:hover .slide-img img{transform:scale(1.03)}
.slide-body{padding:20px 22px 24px}
.slide-body h3{font-size:18px;line-height:1.4;margin-bottom:8px;font-weight:600}
.slide-body p{font-size:14px;color:var(--text-2)}
.carousel-controls{display:flex;align-items:center;justify-content:space-between;gap:20px}
.dots{display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;padding:0;border-radius:var(--r-pill);background:var(--line);transition:width var(--t-toggle) var(--ease),background var(--t-toggle) var(--ease)}
.dot.active{width:22px;background:var(--brand)}
.arrows{display:flex;gap:10px}
.c-arrow{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:color var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease),background var(--t-hover) var(--ease),transform var(--t-hover) var(--ease);
}
.c-arrow:hover{color:var(--brand);border-color:var(--brand-30);background:var(--brand-soft);transform:translateY(-2px)}

/* ================= 系统要求 ================= */
.spec-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.spec-tab{
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--text-2);font-size:15px;
  transition:color var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease),background var(--t-hover) var(--ease);
}
.spec-tab:hover{border-color:var(--brand-30);color:var(--brand)}
.spec-tab.active{background:var(--brand);border-color:var(--brand);color:var(--surface)}
.spec-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;animation:fadeUp 240ms var(--ease) both;
}
.spec-panel[hidden]{display:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.spec-group h3{
  font-size:16px;font-weight:600;color:var(--brand);
  padding-bottom:12px;margin-bottom:16px;border-bottom:1px solid var(--line);
}
.spec-list{display:grid;grid-template-columns:120px 1fr;gap:12px 20px;font-size:14.5px}
.spec-list dt{color:var(--text-2)}
.spec-list dd{margin:0;font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--text);line-height:1.6}
.spec-foot{margin-top:24px;font-size:13px;color:var(--text-3)}

/* ================= 评价墙 ================= */
.wall{columns:3;column-gap:24px}
.wall-item{
  break-inside:avoid;margin:0 0 24px;padding:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease);
}
.wall-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-30)}
.wall-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  flex:0 0 auto;width:42px;height:42px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-weight:600;font-size:15px;
}
.wall-name{font-size:14.5px;font-weight:600;line-height:1.3}
.wall-role{font-size:12.5px;color:var(--text-3)}
.wall-text{font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:14px}

/* ================= 资讯列表 ================= */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--t-hover) var(--ease),box-shadow var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-30)}
.news-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-toggle) var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-badge{position:absolute;left:12px;top:12px}
.news-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1}
.news-body h3{
  font-size:18px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.news-foot time{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  color:var(--text-2);font-size:15px;text-align:center;padding:24px;
}
.empty-state i{font-size:26px;color:var(--text-3)}
.empty-state a{font-size:14px;font-weight:500}

/* 骨架屏 */
.skeleton{background:linear-gradient(90deg,var(--line) 25%,var(--bg) 37%,var(--line) 63%);background-size:400% 100%;animation:skeleton 1.4s ease infinite;border-radius:var(--r-sm)}
@keyframes skeleton{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ================= 下载 CTA ================= */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:var(--surface);
  padding:84px 0;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:-260px;width:900px;height:900px;transform:translateX(-50%);
  background:repeating-radial-gradient(circle at center,transparent 0 62px,var(--white-08) 62px 63px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2}
.cta-band h2{
  font-family:var(--font-serif);font-size:clamp(26px,3.4vw,38px);
  line-height:1.25;letter-spacing:-.01em;color:var(--surface);
}
.cta-band > .container > p{max-width:660px;margin:16px auto 32px;color:var(--white-70);font-size:16px}
.platform-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:40px}
.qr-wrap{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{
  width:160px;height:160px;padding:8px;border-radius:var(--r-md);
  background:var(--surface);overflow:hidden;box-shadow:var(--shadow-2);
}
.qr-box img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-sm)}
.qr-note{font-size:13px;color:var(--white-70)}
.cta-note{margin-top:30px;font-size:12.5px;color:var(--white-70);letter-spacing:.01em}

/* ================= FAQ ================= */
.faq{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:500;color:var(--text);
  transition:color var(--t-hover) var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform var(--t-toggle) var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity var(--t-toggle) var(--ease)}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t-toggle) var(--ease)}
.faq-a-inner{padding:0 44px 22px 0;font-size:15.5px;line-height:1.85;color:var(--text-2)}

/* ================= 页脚 ================= */
.site-footer{background:var(--ink);color:var(--white-70);font-size:14px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr .9fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px;font-size:18px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--white-70);max-width:36ch}
.footer-brand .badge{margin-top:16px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--surface);margin-bottom:16px}
.footer-col a{display:block;padding:5px 0;color:var(--white-70);font-size:14px}
.footer-col a:hover{color:var(--brand-soft)}
.footer-col p{padding:5px 0;font-size:14px;color:var(--white-70)}
.footer-bottom{
  border-top:1px solid var(--white-08);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-soft)}
.socials{display:flex;gap:10px}
.socials a{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--white-16);color:var(--white-70);font-size:13px;
  transition:color var(--t-hover) var(--ease),border-color var(--t-hover) var(--ease),transform var(--t-hover) var(--ease);
}
.socials a:hover{color:var(--brand-soft);border-color:var(--brand-soft);transform:translateY(-2px)}

/* ================= 滚动入场 ================= */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity var(--t-reveal) var(--ease),transform var(--t-reveal) var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ================= 响应式 ================= */
@media (max-width:1280px){
  .container{padding:0 28px}
}
@media (max-width:1024px){
  :root{--sp-section:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:60px 0 68px}
  .hero-visual{max-width:640px}
  .bcard--lg{grid-column:span 12}
  .bcard--sm{grid-column:span 6}
  .bcard--wide{grid-column:span 12;grid-template-columns:auto 1fr;gap:20px}
  .bcard--wide .btn{grid-column:span 2;justify-self:start}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .wall{columns:2}
  .slide{flex:0 0 320px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:56px}
  html{scroll-padding-top:104px}
  .container{padding:0 20px}
  .topbar-inner{height:56px;gap:14px}
  .logo{font-size:17px}
  .search{display:none}
  .search-toggle{display:grid;margin-left:auto}
  .topbar-actions{margin-left:0;gap:12px}
  .topbar-actions .link-plain{display:none}
  .mobile-search .search{display:flex}
  .hero{padding:44px 0 56px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .float-badge{right:8px;bottom:14px}
  .stats{padding:40px 0 0}
  .stats-inner{grid-template-columns:repeat(2,1fr)}
  .stat{padding:22px 18px;border-left:1px solid var(--line)}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .bcard--wide{grid-template-columns:1fr;gap:16px}
  .bcard--wide .btn{grid-column:auto}
  .spec-grid{grid-template-columns:1fr;gap:24px}
  .spec-panel{padding:24px}
  .spec-list{grid-template-columns:104px 1fr}
  .wall{columns:1}
  .news-grid{grid-template-columns:1fr}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  body{font-size:16px}
  .btn-lg{height:48px;padding:0 20px;font-size:15px}
  .bcard,.wall-item,.news-body{padding:20px}
  .bcard--sm{grid-column:span 12}
  .slide{flex:0 0 84vw}
  .qr-box{width:140px;height:140px}
  .platform-btns{gap:10px}
  .platform-btns .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  [data-reveal]{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0E2A24;
  --brand:#1D6B57;
  --brand-strong:#175A49;
  --brand-soft:#E4EFEA;
  --accent:#C86A34;
  --accent-strong:#B25C2B;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --text:#222C28;
  --text-2:#6B7370;
  --text-3:#9AA19D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,42,36,.06);
  --shadow-2:0 10px 30px -12px rgba(14,42,36,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur-1:160ms;
  --dur-2:320ms;
  --dur-3:520ms;
  --font-serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --font-sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:124px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-sm) 0;z-index:200}
.skip-link:focus{left:0}

/* ============ 按钮与徽章 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;line-height:1;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease),transform var(--dur-1) var(--ease);white-space:nowrap}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-strong);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-accent:hover{background:var(--accent-strong);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600}
.link-arrow i{transition:transform var(--dur-1) var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-weight:600}
.badge-accent{background:var(--accent);color:#fff}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(246,243,236,.95);backdrop-filter:saturate(160%) blur(10px);-webkit-backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--dur-2) var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;flex:0 0 auto}
.logo-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;inset:8px;border:2px solid rgba(255,255,255,.85);border-radius:50%}
.search{position:relative;margin-left:auto;display:flex;align-items:center;width:220px;transition:width var(--dur-2) var(--ease)}
.search:focus-within{width:300px}
.search i{position:absolute;left:14px;font-size:13px;color:var(--text-3);pointer-events:none}
.search input{width:100%;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);padding:0 16px 0 38px;font-size:14px;color:var(--text);transition:border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease)}
.search input::placeholder{color:var(--text-3)}
.search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(29,107,87,.18)}
.header-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.search-toggle{display:none;width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);color:var(--text-2);align-items:center;justify-content:center;transition:all var(--dur-1) var(--ease)}
.search-toggle:hover{color:var(--brand);border-color:var(--brand)}
.mobile-search{display:none;border-top:1px solid var(--line);background:var(--surface);padding:12px 0}
.mobile-search[hidden]{display:none}
.mobile-search form{display:flex;gap:10px}
.mobile-search input{flex:1;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);padding:0 14px;font-size:14px;background:var(--bg)}
.mobile-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(29,107,87,.18)}
.channelbar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.channelbar .container{position:relative}
.channelbar .container::after{content:"";position:absolute;right:0;top:0;bottom:0;width:24px;background:linear-gradient(to right,rgba(255,255,255,0),var(--surface));pointer-events:none;transition:opacity var(--dur-2) var(--ease)}
.channelbar.at-end .container::after{opacity:0}
.channels{display:flex;align-items:stretch;gap:6px;height:48px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none}
.channels::-webkit-scrollbar{display:none}
.channels li{flex:0 0 auto;scroll-snap-align:start}
.channels a{display:inline-flex;align-items:center;height:48px;padding:0 14px;font-size:14.5px;color:var(--text-2);border-bottom:2px solid transparent;transition:color var(--dur-1) var(--ease),background var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease)}
.channels a:hover{color:var(--brand);background:var(--brand-soft)}
.channels a.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}

/* ============ 文章容器 ============ */
main{padding:36px 0 96px}
.article-container{width:100%;max-width:880px;margin:0 auto;padding:0 32px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:28px}
.breadcrumb a{color:var(--text-2);transition:color var(--dur-1) var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{border-bottom:1px solid var(--line);padding-bottom:32px;margin-bottom:36px}
.article-title{font-size:clamp(28px,4.4vw,42px);line-height:1.22;letter-spacing:-.01em;margin:18px 0 20px;color:var(--ink)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;font-size:13.5px;color:var(--text-2)}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item i{font-size:13px;color:var(--text-3)}
.share-group{display:inline-flex;gap:8px;margin-left:auto}
.share-btn{width:36px;height:36px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);font-size:13px;transition:all var(--dur-1) var(--ease)}
.share-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.share-btn.is-copied{border-color:var(--accent);color:var(--accent);background:#FBEFE7}
.article-cover{margin:28px 0 0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--brand-soft)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--text-3);text-align:center;padding:12px 16px;background:var(--surface);border-top:1px solid var(--line)}

/* ============ 正文排版 ============ */
.article-body{font-size:17px;line-height:1.9;color:var(--text)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(21px,2.4vw,27px);line-height:1.35;margin:44px 0 16px;padding-left:16px;letter-spacing:-.01em}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--accent)}
.article-body h3{font-size:20px;line-height:1.4;margin:32px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--ink)}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body blockquote{margin:26px 0;padding:18px 22px;border-left:4px solid var(--brand);background:var(--bg);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--text-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.45em}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.76em;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:.45em;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono)}
.article-body img{border-radius:var(--r-md);margin:24px auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:26px 0}
.article-body figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;font-size:15px;text-align:left;white-space:nowrap}
.article-body th{background:var(--brand-soft);color:var(--ink);font-weight:600}
.article-body code{font-family:var(--font-mono);font-size:14px;background:var(--brand-soft);color:var(--brand-strong);padding:2px 6px;border-radius:var(--r-sm)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* ============ 空态 ============ */
.empty-state{text-align:center;padding:72px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg)}
.empty-state i{font-size:34px;color:var(--text-3)}
.empty-state h2{font-size:22px;margin:18px 0 10px}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:22px}

/* ============ 文末 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0}
.tag{font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;background:var(--surface);transition:all var(--dur-1) var(--ease)}
.tag:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.foot-share{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.foot-share span{font-size:13.5px;color:var(--text-2)}
.related{margin-top:64px;padding-top:44px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:clamp(20px,2.4vw,26px)}
.section-head p{font-size:14px;color:var(--text-2);margin-top:6px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease)}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(29,107,87,.3)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur-2) var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-thumb .badge{position:absolute;left:12px;top:12px}
.post-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3)}
.back-link{display:flex;justify-content:center;margin-top:44px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-bottom:16px}
.footer-brand .badge{background:rgba(255,255,255,.1);color:#E4EFEA}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-family:var(--font-sans);font-weight:600}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;transition:color var(--dur-1) var(--ease)}
.footer-col a:hover{color:var(--brand-soft)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5)}
.socials{display:flex;gap:12px}
.socials a{width:34px;height:34px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.16);display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);transition:all var(--dur-1) var(--ease)}
.socials a:hover{background:var(--brand);border-color:var(--brand);color:#fff}

/* ============ 滚动入场 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--dur-3) var(--ease),transform var(--dur-3) var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .article-container{padding:0 24px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  html{scroll-padding-top:112px}
  .container{padding:0 20px}
  .article-container{padding:0 20px}
  .header-inner{height:56px;gap:12px}
  .logo{font-size:16.5px}
  .logo-mark{width:24px;height:24px}
  .search{display:none}
  .header-actions .link-arrow{display:none}
  .header-actions .btn{height:38px;padding:0 14px;font-size:13.5px}
  .search-toggle{display:inline-flex}
  .mobile-search.is-open{display:block}
  .channels a{padding:0 12px;font-size:14px}
  main{padding:24px 0 64px}
  .article-title{font-size:26px}
  .article-body{font-size:16px}
  .article-body h2{margin-top:34px}
  .post-grid{grid-template-columns:1fr;gap:16px}
  .share-group{margin-left:0;width:100%}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .breadcrumb .current{max-width:200px}
  .meta-row{gap:8px 16px}
  .article-cover{border-radius:var(--r-md)}
  .empty-state{padding:52px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0E2A24;
  --brand:#1D6B57;
  --brand-soft:#E4EFEA;
  --accent:#C86A34;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --text:#222C28;
  --text-2:#6B7370;
  --text-3:#9AA19D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,42,36,.06);
  --shadow-2:0 10px 30px -12px rgba(14,42,36,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:116px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.01em;line-height:1.25;color:var(--text)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background 160ms var(--ease),border-color 160ms var(--ease),transform 160ms var(--ease),box-shadow 160ms var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;position:relative;overflow:hidden}
.btn-primary:hover{background:color-mix(in srgb,var(--brand) 88%,#000);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.btn-primary::after{
  content:"";position:absolute;top:-40%;left:-60%;width:40%;height:180%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-18deg);animation:sweep 700ms var(--ease) 1;
}
@keyframes sweep{from{left:-60%}to{left:120%}}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:color-mix(in srgb,var(--accent) 88%,#000);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn:active{transform:scale(.98)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;cursor:pointer;
  font-size:14.5px;font-weight:600;color:var(--brand);padding:0;
}
.btn-text i{transition:transform 160ms var(--ease)}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:100}
.site-header.is-stuck{box-shadow:var(--shadow-2)}
.topbar{background:var(--ink)}
.topbar-inner{height:68px;display:flex;align-items:center;gap:24px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:19px;font-weight:600;letter-spacing:-.01em;
  color:#fff;flex:0 0 auto;
}
.logo-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px 8px;border-radius:2px;
  background:rgba(255,255,255,.85);
}
.search{
  position:relative;display:flex;align-items:center;gap:10px;
  width:220px;height:44px;padding:0 16px;margin-left:auto;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);
  transition:width 320ms var(--ease),border-color 160ms var(--ease),box-shadow 160ms var(--ease),background 160ms var(--ease);
}
.search:focus-within{
  width:300px;background:rgba(255,255,255,.12);
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(29,107,87,.45);
}
.search i{color:var(--brand-soft);font-size:14px}
.search input{
  flex:1;min-width:0;background:none;border:0;outline:none;
  color:#fff;font-size:14px;
}
.search input::placeholder{color:rgba(228,239,234,.55)}
.topbar-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.topbar-actions .btn-text{color:var(--brand-soft)}
.topbar-actions .btn-text:hover{color:#fff}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.search-panel{display:none;background:var(--ink);border-top:1px solid rgba(255,255,255,.1);padding:12px 0}
.search-panel.open{display:block}
.search-panel .search{width:100%;margin:0}
.search-panel .search:focus-within{width:100%}

/* ---------- 频道条 ---------- */
.channelbar{background:var(--surface);border-bottom:1px solid var(--line);position:relative}
.channelbar::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:24px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--surface));
}
.channels{
  display:flex;align-items:center;gap:8px;height:48px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channels::-webkit-scrollbar{display:none}
.channels li{flex:0 0 auto;scroll-snap-align:start}
.channels a{
  display:inline-flex;align-items:center;height:48px;padding:0 14px;
  font-size:14.5px;color:var(--text-2);
  border-bottom:2px solid transparent;
  transition:color 160ms var(--ease),background 160ms var(--ease),border-color 160ms var(--ease);
  white-space:nowrap;
}
.channels a:hover{color:var(--brand);background:var(--brand-soft)}
.channels a.active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--text-2);margin:0 0 22px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text)}

/* ---------- Hero band ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--brand-soft);
  border-bottom:1px solid var(--line);
  padding:48px 0 56px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,color-mix(in srgb,var(--brand) 6%,transparent) 0 1px,transparent 1px 72px),
    repeating-linear-gradient(0deg,color-mix(in srgb,var(--brand) 5%,transparent) 0 1px,transparent 1px 72px);
  opacity:.9;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero-copy .badge{margin-bottom:18px}
.hero-copy h1{
  font-size:clamp(34px,5vw,52px);line-height:1.15;letter-spacing:-.01em;margin-bottom:18px;
}
.hero-copy .lede{font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:58ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);
}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-media .caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:12.5px;color:#fff;
  background:linear-gradient(0deg,rgba(14,42,36,.82),transparent);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;line-height:1;
  background:var(--brand-soft);color:var(--brand);
  border-radius:var(--r-pill);padding:7px 12px;
  border:1px solid color-mix(in srgb,var(--brand) 18%,transparent);
}
.badge-accent{background:var(--accent);color:#fff;border-color:transparent}

/* ---------- 票券式信息条 ---------- */
.ticket-strip{
  margin-top:28px;display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px dashed color-mix(in srgb,var(--brand) 30%,transparent);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);
}
.ticket-strip li{padding:16px 20px;border-right:1px dashed var(--line)}
.ticket-strip li:last-child{border-right:0}
.ticket-strip .k{display:block;font-size:12.5px;color:var(--text-3);letter-spacing:.04em}
.ticket-strip .v{
  display:block;margin-top:6px;font-family:var(--font-mono);font-size:19px;font-weight:600;
  color:var(--ink);font-variant-numeric:tabular-nums;
}
.ticket-strip .v em{font-style:normal;color:var(--accent)}

/* ---------- 区块通用 ---------- */
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:12px;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;margin-bottom:16px}
.section-head p{color:var(--text-2);font-size:16px}

/* ---------- 图文交错 ---------- */
.zig-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:36px 0;border-top:1px solid var(--line);
}
.zig-row:first-child{border-top:0;padding-top:0}
.zig-row.reverse .zig-copy{order:2}
.zig-row.reverse .zig-media{order:1}
.zig-index{
  font-family:var(--font-serif);font-size:15px;color:var(--accent);
  letter-spacing:.16em;margin-bottom:10px;display:block;
}
.zig-copy h3{font-size:clamp(21px,2.2vw,26px);margin-bottom:16px}
.zig-copy .points li{
  position:relative;padding-left:26px;margin-bottom:14px;color:var(--text-2);font-size:15.5px;
}
.zig-copy .points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.zig-copy .points li strong{color:var(--text);font-weight:600}
.zig-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-1);
  transition:box-shadow 320ms var(--ease),transform 320ms var(--ease);
}
.zig-media:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 320ms var(--ease)}
.zig-media:hover img{transform:scale(1.03)}
.zig-media figcaption{font-size:12.5px;color:var(--text-3);padding:12px 16px;border-top:1px solid var(--line)}

/* ---------- 场景票券卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ticket-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px 24px;
  transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 320ms var(--ease);
}
.ticket-card::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:3px;border-radius:0 0 3px 3px;
  background:var(--accent);opacity:.85;
}
.ticket-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:color-mix(in srgb,var(--brand) 30%,transparent)}
.ticket-card h3{font-size:19px;margin-bottom:12px}
.ticket-card p{font-size:14.5px;color:var(--text-2);margin:0}
.ticket-meta{
  display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:14px;
  border-top:1px dashed var(--line);font-size:12.5px;color:var(--text-3);
}
.ticket-meta i{color:var(--brand)}

/* ---------- 规格参数 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.spec-group{padding:24px 0;border-top:1px solid var(--line)}
.spec-group h3{font-size:18px;margin-bottom:14px}
.spec-list{display:grid;grid-template-columns:auto 1fr;gap:10px 20px;margin:0}
.spec-list dt{font-size:14.5px;color:var(--text-2);border-bottom:1px dotted var(--line);align-self:end}
.spec-list dd{
  margin:0;font-family:var(--font-mono);font-size:14px;color:var(--ink);
  font-variant-numeric:tabular-nums;text-align:right;
}
.spec-note{margin-top:20px;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color 160ms var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--brand);font-size:13px;
  transition:transform 320ms var(--ease),background 160ms var(--ease);
}
.faq-item.open .faq-q .sign{transform:rotate(180deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);background:var(--bg)}
.faq-a p{margin:0;padding:4px 4px 22px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(180deg,var(--brand-soft),var(--bg));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-inner{
  display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;
}
.cta-band h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px}
.cta-band p{color:var(--text-2);font-size:15.5px;margin:0;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.pill-links{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;
  padding-top:24px;border-top:1px dashed color-mix(in srgb,var(--brand) 24%,transparent);
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:13.5px;color:var(--text-2);
  transition:border-color 160ms var(--ease),color 160ms var(--ease),transform 160ms var(--ease);
}
.pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.pill i{color:var(--accent);font-size:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--brand-soft);padding:72px 0 32px;margin-top:0}
.site-footer .logo{color:#fff;margin-bottom:16px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(228,239,234,.72);max-width:34ch;margin:0 0 16px}
.footer-brand .badge{background:rgba(255,255,255,.08);color:var(--brand-soft);border-color:rgba(255,255,255,.16)}
.footer-col h4{
  font-size:13px;font-family:var(--font-sans);font-weight:600;
  letter-spacing:.08em;color:rgba(228,239,234,.6);margin-bottom:16px;
}
.footer-col a,.footer-col p{
  display:block;font-size:14px;color:rgba(228,239,234,.85);
  margin:0 0 10px;transition:color 160ms var(--ease);
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(228,239,234,.62);
}
.socials{display:flex;gap:12px}
.socials a{
  width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:var(--brand-soft);
  transition:background 160ms var(--ease),color 160ms var(--ease);
}
.socials a:hover{background:var(--brand);color:#fff}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- 断点 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px}
}
@media (max-width:1024px){
  :root{--sp-section:72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy .lede{max-width:none}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:1fr;gap:0}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:56px}
  html{scroll-padding-top:104px}
  .container{padding:0 20px}
  .topbar-inner{height:56px;gap:14px}
  .search{display:none}
  .search-toggle{display:inline-flex}
  .topbar-actions .btn-text{display:none}
  .topbar-actions .btn{padding:0 16px;font-size:14px}
  .channels{height:48px}
  .page-hero{padding:32px 0 40px}
  .zig-row,.zig-row.reverse{grid-template-columns:1fr;gap:24px;padding:28px 0}
  .zig-row.reverse .zig-copy{order:1}
  .zig-row.reverse .zig-media{order:2}
  .scene-grid{grid-template-columns:1fr}
  .ticket-strip{grid-template-columns:repeat(2,1fr)}
  .ticket-strip li:nth-child(2){border-right:0}
  .ticket-strip li:nth-child(1),.ticket-strip li:nth-child(2){border-bottom:1px dashed var(--line)}
  .spec-list dd{text-align:left}
  .cta-band{padding:48px 0}
  .site-footer{padding:56px 0 28px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .hero-copy h1{font-size:clamp(28px,8vw,34px)}
  .hero-actions .btn{width:100%}
  .ticket-strip{grid-template-columns:1fr}
  .ticket-strip li{border-right:0;border-bottom:1px dashed var(--line)}
  .ticket-strip li:last-child{border-bottom:0}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category3 */
:root{
  --ink:#0E2A24;
  --brand:#1D6B57;
  --brand-soft:#E4EFEA;
  --accent:#C86A34;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --text:#222C28;
  --text-2:#6B7370;
  --text-3:#9AA19D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,42,36,.06);
  --shadow-2:0 10px 30px -12px rgba(14,42,36,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-padding-top:116px;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color 160ms var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-0.01em;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.tabular{font-variant-numeric:tabular-nums;font-family:var(--mono);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;}
.topbar{background:var(--ink);height:68px;}
.topbar .container{height:100%;display:flex;align-items:center;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:700;color:#fff;letter-spacing:-0.01em;white-space:nowrap;}
.logo:hover{color:var(--brand-soft);}
.logo-mark{width:22px;height:22px;flex:0 0 22px;border-radius:6px;background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);box-shadow:0 0 0 1px rgba(255,255,255,.18) inset;}
.search{position:relative;margin-left:auto;display:flex;align-items:center;}
.search i{position:absolute;left:14px;color:var(--text-3);font-size:14px;pointer-events:none;}
.search input{
  width:220px;height:40px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.08);
  color:#fff;padding:0 16px 0 38px;font-size:14px;
  transition:width 320ms var(--ease),border-color 160ms var(--ease),box-shadow 160ms var(--ease),background 160ms var(--ease);
}
.search input::placeholder{color:rgba(255,255,255,.42);}
.search input:focus{width:300px;outline:none;background:rgba(255,255,255,.12);border-color:var(--brand-soft);box-shadow:0 0 0 2px rgba(228,239,234,.22);}
.topbar-actions{display:flex;align-items:center;gap:18px;}
.link-quiet{font-size:14px;color:rgba(255,255,255,.72);}
.link-quiet:hover{color:#fff;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform 160ms var(--ease),background 160ms var(--ease),box-shadow 160ms var(--ease),border-color 160ms var(--ease),color 160ms var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#175847;color:#fff;box-shadow:var(--shadow-2);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#b25c2b;color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-ghost-light{background:rgba(255,255,255,.06);color:#fff;border:1px solid rgba(255,255,255,.28);}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);height:auto;padding:0;}
.btn-text i{transition:transform 160ms var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.topbar .btn-primary{height:40px;padding:0 18px;font-size:14px;}
.menu-toggle{display:none;width:40px;height:40px;border-radius:var(--r-sm);color:#fff;font-size:18px;align-items:center;justify-content:center;}

.channelbar{background:var(--surface);border-bottom:1px solid var(--line);height:48px;position:relative;}
.channelbar::after{
  content:"";position:absolute;right:0;top:0;bottom:1px;width:24px;
  background:linear-gradient(90deg,rgba(255,255,255,0) 0%,var(--surface) 100%);
  pointer-events:none;
}
.channels{
  display:flex;align-items:center;gap:6px;height:48px;
  overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.channels::-webkit-scrollbar{display:none;}
.channels li{scroll-snap-align:start;flex:0 0 auto;}
.channels a{
  display:inline-flex;align-items:center;height:48px;padding:0 14px;
  font-size:14.5px;color:var(--text-2);position:relative;
  transition:color 160ms var(--ease),background 160ms var(--ease);
}
.channels a:hover{color:var(--brand);background:var(--brand-soft);}
.channels a.active{color:var(--brand);font-weight:600;}
.channels a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--brand);border-radius:2px;
}

/* ---------- crumb ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-2);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{margin:0 8px;color:var(--text-3);}
.crumb .now{color:var(--text);}

/* ---------- page hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#FBF9F4 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(14,42,36,.045) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(0deg,rgba(14,42,36,.045) 0 1px,transparent 1px 64px);
  opacity:.55;pointer-events:none;
}
.page-hero .container{position:relative;padding-top:44px;padding-bottom:56px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;}
.badge{
  display:inline-block;font-size:12.5px;line-height:1;
  padding:5px 11px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.badge-accent{background:var(--accent);color:#fff;}
.page-hero h1{
  font-size:clamp(34px,5vw,52px);line-height:1.15;margin:18px 0 16px;
}
.page-hero .lead{font-size:16.5px;line-height:1.8;color:var(--text-2);max-width:60ch;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-thumb{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-2);
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-thumb figcaption{font-size:12.5px;color:var(--text-3);padding:10px 14px;border-top:1px solid var(--line);text-align:center;}

/* ---------- sections ---------- */
section{padding:var(--space-section) 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;margin-top:14px;}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}
.h2-rule{position:relative;padding-left:16px;}
.h2-rule::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--accent);}

/* spec groups */
.spec-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
  transition:box-shadow 320ms var(--ease),transform 320ms var(--ease),border-color 320ms var(--ease);
}
.spec-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:rgba(29,107,87,.3);}
.spec-card h3{font-size:21px;line-height:1.4;display:flex;align-items:center;gap:10px;}
.spec-card h3 .idx{
  font-family:var(--serif);font-size:26px;color:rgba(200,106,52,.5);line-height:1;
}
.spec-card .card-note{margin-top:10px;font-size:14px;color:var(--text-2);}
.spec-list{margin-top:20px;border-top:1px solid var(--line);}
.spec-row{
  display:flex;justify-content:space-between;gap:20px;align-items:baseline;
  padding:12px 0;border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:none;}
.spec-row dt{font-size:14.5px;color:var(--text-2);}
.spec-row dd{margin:0;font-family:var(--mono);font-size:14px;color:var(--ink);text-align:right;font-variant-numeric:tabular-nums;}
.spec-row dd.wide{font-family:var(--sans);font-size:14.5px;max-width:62%;}

/* faq */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);text-align:left;
  font-family:var(--sans);transition:color 160ms var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q .sign{
  flex:0 0 26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--brand);
  transition:transform 320ms var(--ease),background 160ms var(--ease),border-color 160ms var(--ease);
}
.faq-item.open .faq-q{color:var(--brand);}
.faq-item.open .faq-q .sign{transform:rotate(180deg);background:var(--brand-soft);border-color:var(--brand-soft);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);background:var(--bg);border-radius:var(--r-sm);}
.faq-a p{padding:0 18px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-a p:first-child{padding-top:16px;}
.faq-a p:last-child{padding-bottom:18px;}

/* download band (light) */
.dl-band{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;display:grid;grid-template-columns:1fr 200px;gap:40px;align-items:center;
  box-shadow:var(--shadow-1);
}
.dl-band h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
.dl-band p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:56ch;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.qr-box{
  text-align:center;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px;background:var(--bg);
}
.qr-box .qr{
  width:160px;height:160px;margin:0 auto;border-radius:var(--r-sm);
  background-image:
    repeating-linear-gradient(90deg,var(--ink) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,var(--ink) 0 6px,transparent 6px 12px);
  background-size:12px 12px;opacity:.14;border:1px solid var(--line);
}
.qr-box span{display:block;margin-top:12px;font-size:12.5px;color:var(--text-3);}
.dl-note{margin-top:22px;font-size:12.5px;color:var(--text-3);}

/* cross links */
.cross{padding-top:0;}
.cross-band{
  background:var(--brand-soft);border-radius:var(--r-lg);
  padding:34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cross-band h3{font-size:20px;}
.cross-band p{font-size:14.5px;color:var(--text-2);margin-top:8px;}
.pill-links{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:14px;color:var(--ink);font-weight:600;
  transition:border-color 160ms var(--ease),color 160ms var(--ease),transform 160ms var(--ease),box-shadow 160ms var(--ease);
}
.pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.pill i{font-size:12px;color:var(--accent);}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{font-size:18px;color:#fff;}
.footer-brand p{margin:16px 0 18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:36ch;}
.footer-brand .badge{background:rgba(228,239,234,.14);color:var(--brand-soft);}
.footer-col h4{
  font-family:var(--sans);font-size:13px;letter-spacing:.08em;
  color:#fff;margin-bottom:16px;font-weight:600;
}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;}
.footer-col a:hover{color:var(--brand-soft);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.socials{display:flex;gap:10px;}
.socials a{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.7);font-size:13px;
  transition:background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease);
}
.socials a:hover{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{max-width:1100px;}
}
@media (max-width:1024px){
  :root{--space-section:72px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-thumb{order:2;}
  .spec-groups{grid-template-columns:1fr;}
  .dl-band{grid-template-columns:1fr;padding:32px;}
  .qr-box{max-width:240px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .search input{width:170px;}
  .search input:focus{width:220px;}
}
@media (max-width:768px){
  :root{--space-section:56px;}
  .container{padding:0 20px;}
  html{scroll-padding-top:104px;}
  .topbar{height:56px;}
  .topbar .btn-primary,.topbar-actions .link-quiet{display:none;}
  .search{display:none;}
  .search.open{display:flex;position:absolute;left:0;right:0;top:56px;padding:12px 20px;background:var(--ink);z-index:110;}
  .search.open input{width:100%;}
  .menu-toggle{display:inline-flex;margin-left:auto;}
  .channelbar{height:48px;}
  .channels{height:48px;}
  .channels a{height:48px;padding:0 12px;font-size:14px;}
  .page-hero h1{margin-top:14px;}
  .page-hero .container{padding-top:32px;padding-bottom:40px;}
  .dl-buttons .btn{width:100%;}
  .cross-band{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .spec-row{flex-direction:column;gap:4px;}
  .spec-row dd,.spec-row dd.wide{text-align:left;max-width:100%;}
}
@media (max-width:480px){
  .page-hero h1{font-size:clamp(28px,8vw,34px);}
  .spec-card{padding:20px;}
  .dl-band{padding:22px;}
  .faq-q{font-size:16px;padding:18px 2px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --ink:#0E2A24;
  --brand:#1D6B57;
  --brand-soft:#E4EFEA;
  --accent:#C86A34;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --text:#222C28;
  --text-2:#6B7370;
  --text-3:#9AA19D;
  --r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,42,36,.06);
  --shadow-2:0 10px 30px -12px rgba(14,42,36,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-section:96px;
  --header-h:116px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:var(--header-h);-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color 160ms var(--ease),border-color 160ms var(--ease)}
a:hover{color:var(--ink)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,56px);line-height:1.15}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25}
h3{font-size:20px;line-height:1.4}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--ink)}
/* ============ 容器与排版工具 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:64px 0}
.section--paper{background:var(--surface)}
.section--ink{background:var(--ink);color:#D9E3DE}
.section--ink h2,.section--ink h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:14px
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.lead{font-size:17px;color:var(--text-2);max-width:62ch}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:44px}
.section-head .lead{margin-top:16px}
.muted{color:var(--text-2)}
.micro{font-size:12.5px;color:var(--text-3)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.badge{
  display:inline-block;font-size:12.5px;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-weight:600;line-height:1.6
}
.badge--accent{background:var(--accent);color:#fff}
/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),transform 160ms var(--ease),box-shadow 160ms var(--ease)
}
.btn-primary{background:var(--brand);color:#fff;position:relative;overflow:hidden}
.btn-primary:hover{background:#175A49;color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-2)}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.32),rgba(255,255,255,0));
  transform:skewX(-18deg);animation:sheen 700ms var(--ease) 1 both
}
@keyframes sheen{from{left:-120%}to{left:130%}}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#B25C2A;color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.btn-soft{background:var(--surface);color:var(--brand);border-color:var(--line);box-shadow:var(--shadow-1)}
.btn-soft:hover{border-color:rgba(29,107,87,.5);color:var(--ink);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.btn:active{transform:scale(.98)}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform 160ms var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}
/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:100;background:var(--surface);transition:box-shadow 200ms var(--ease)}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.topbar{height:68px;border-bottom:1px solid var(--line)}
.topbar-inner{height:100%;display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.logo-mark{width:22px;height:22px;border-radius:6px;background:var(--brand);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;inset:6px 6px auto 6px;height:2px;background:var(--brand-soft);box-shadow:0 5px 0 var(--brand-soft),0 -5px 0 rgba(228,239,234,.55)}
.logo:hover{color:var(--brand)}
.search{position:relative;margin-left:8px;display:flex;align-items:center}
.search i{position:absolute;left:14px;font-size:13px;color:var(--text-3)}
.search input{
  height:44px;width:220px;padding:0 16px 0 38px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--bg);color:var(--text);
  transition:width 320ms var(--ease),border-color 160ms var(--ease),box-shadow 160ms var(--ease),background-color 160ms var(--ease)
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{outline:none;width:300px;background:var(--surface);border:1.5px solid var(--brand);box-shadow:0 0 0 2px rgba(29,107,87,.18)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.search-toggle{display:none;width:44px;height:44px;border-radius:var(--r-sm);color:var(--ink);font-size:16px}
.search-toggle:hover{background:var(--brand-soft);color:var(--brand)}
.mobile-search{border-bottom:1px solid var(--line);background:var(--surface);padding:12px 0}
.mobile-search .container{display:flex}
.mobile-search input{height:44px;width:100%;padding:0 14px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--bg)}
/* 频道行 */
.channelbar{height:48px;background:var(--surface);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.channelbar .container{position:relative;height:100%}
.channelbar::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:24px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--surface))
}
.channels{
  display:flex;align-items:stretch;gap:28px;height:100%;overflow-x:auto;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none
}
.channels::-webkit-scrollbar{display:none}
.channels li{scroll-snap-align:start;display:flex}
.channels a{
  display:inline-flex;align-items:center;height:100%;font-size:14.5px;font-weight:500;
  color:var(--text-2);border-bottom:2px solid transparent;white-space:nowrap;
  transition:color 160ms var(--ease),border-color 160ms var(--ease),background-color 160ms var(--ease)
}
.channels a:hover{color:var(--ink);background:rgba(228,239,234,.5)}
.channels a.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
/* ============ 面包屑 ============ */
.breadcrumb{padding:24px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--line)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current]{color:var(--ink)}
/* ============ Hero band ============ */
.hero-band{
  position:relative;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden
}
.hero-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:right center;opacity:.14;pointer-events:none
}
.hero-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line)
}
.hero-band .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:center;padding:56px 0 64px}
.hero-copy h1{max-width:18ch}
.hero-copy .badge{margin-bottom:18px}
.hero-copy .lead{margin-top:20px;max-width:56ch}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-facts span{
  font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:5px 12px;background:var(--bg)
}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow-2);
  aspect-ratio:4/3;object-fit:cover
}
.hero-media figcaption{font-size:12.5px;color:var(--text-3);text-align:center;margin-top:12px}
.hero-float{
  position:absolute;left:-16px;bottom:34px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--shadow-2);padding:12px 16px;display:flex;align-items:center;gap:10px
}
.hero-float b{font-family:var(--mono);font-size:20px;color:var(--accent)}
.hero-float span{font-size:12.5px;color:var(--text-2);line-height:1.4}
/* ============ 步骤流 ============ */
.steps-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:56px;align-items:start}
.steps{position:relative;list-style:none;margin:0;padding:0}
.steps::before{content:"";position:absolute;left:19px;top:10px;bottom:18px;width:1px;background:rgba(29,107,87,.3)}
.step{position:relative;padding:0 0 44px 68px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:15px;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 6px var(--brand-soft)
}
.step-num{font-family:var(--serif);font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.08em;display:block;margin-bottom:6px}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2);margin-bottom:12px}
.step-points{display:flex;flex-wrap:wrap;gap:8px}
.step-points li{
  font-size:13px;color:var(--brand);background:var(--brand-soft);border-radius:var(--r-pill);padding:4px 12px
}
.step-note{
  margin-top:12px;padding:12px 16px;border-left:4px solid var(--accent);background:var(--bg);
  font-size:14px;color:var(--text-2);border-radius:0 var(--r-sm) var(--r-sm) 0
}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);position:sticky;top:calc(var(--header-h) + 24px)
}
.side-card h3{font-size:18px;margin-bottom:14px}
.side-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:10px 0;border-bottom:1px solid var(--line)
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list i{color:var(--brand);font-size:13px;margin-top:5px}
.side-card .btn{margin-top:20px}
/* ============ 准备清单 ============ */
.prep-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.checklist li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)
}
.checklist li:last-child{border-bottom:0;padding-bottom:0}
.checklist i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);display:grid;place-items:center;font-size:12px;margin-top:4px
}
.checklist h4{font-family:var(--sans);font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.checklist p{font-size:14.5px;color:var(--text-2);margin:0}
.prep-media img{border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow-2);aspect-ratio:3/2;object-fit:cover}
.prep-media figcaption{font-size:12.5px;color:var(--text-3);text-align:center;margin-top:12px}
/* ============ 安全提醒（深色） ============ */
.alert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.alert-card{
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-lg);padding:26px 24px;
  background:rgba(255,255,255,.03)
}
.alert-card i{font-size:18px;color:var(--brand-soft);margin-bottom:14px;display:block}
.alert-card h3{font-size:18px;margin-bottom:10px}
.alert-card p{font-size:14.5px;color:rgba(217,227,222,.82);margin:0}
/* ============ FAQ ============ */
.faq{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;text-align:left;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink);transition:color 160ms var(--ease)
}
.faq-q:hover{color:var(--brand)}
.faq-q .icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:12px;color:var(--brand);
  transition:transform 320ms var(--ease),border-color 160ms var(--ease),background-color 160ms var(--ease)
}
.faq-q[aria-expanded="true"] .icon{transform:rotate(180deg);background:var(--brand-soft);border-color:transparent}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a .inner{background:var(--bg);border-radius:var(--r-sm);padding:18px 20px;margin:0 4px 20px}
.faq-a p{font-size:15px;color:var(--text-2);margin:0}
/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-soft);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px 40px;text-align:center
}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px}
.cta-band .lead{margin:0 auto 28px;max-width:60ch}
.dl-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.dl-note{margin-top:20px;font-size:12.5px;color:var(--text-3)}
/* ============ 相关分类 ============ */
.related-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.pill-link{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink);
  transition:border-color 160ms var(--ease),color 160ms var(--ease),transform 160ms var(--ease),box-shadow 160ms var(--ease)
}
.pill-link:hover{border-color:rgba(29,107,87,.5);color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.pill-link.is-current{background:var(--brand);border-color:var(--brand);color:#fff;cursor:default}
.pill-link.is-current:hover{transform:none;box-shadow:none;color:#fff}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C6D2CC;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo:hover{color:var(--brand-soft)}
.footer-brand p{font-size:14px;color:rgba(198,210,204,.85);max-width:34ch;margin-bottom:18px}
.footer-brand .badge{background:rgba(228,239,234,.14);color:var(--brand-soft)}
.footer-col h4{
  font-family:var(--sans);font-size:13px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-weight:700
}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(198,210,204,.85);margin:0 0 12px}
.footer-col a:hover{color:var(--brand-soft)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:12.5px
}
.socials{display:flex;gap:14px}
.socials a{
  width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.16);
  display:grid;place-items:center;color:#C6D2CC;font-size:13px;
  transition:color 160ms var(--ease),border-color 160ms var(--ease),transform 160ms var(--ease)
}
.socials a:hover{color:var(--brand-soft);border-color:var(--brand-soft);transform:translateY(-2px)}
/* ============ 滚动入场 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}
/* ============ 响应式 ============ */
@media (max-width:1280px){
  .hero-grid{grid-template-columns:1fr 320px;gap:40px}
}
@media (max-width:1024px){
  :root{--sp-section:72px}
  .container{padding:0 24px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{max-width:520px}
  .steps-layout{grid-template-columns:1fr;gap:36px}
  .side-card{position:static}
  .prep-grid{grid-template-columns:1fr;gap:32px}
  .alert-grid{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:56px;--header-h:104px}
  .container{padding:0 20px}
  .topbar{height:56px}
  .search{display:none}
  .search-toggle{display:grid;place-items:center;order:3}
  .topbar-actions{gap:12px}
  .topbar-actions .btn{padding:0 16px;font-size:14px}
  .topbar-actions .link-arrow{display:none}
  .channels{gap:20px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:30px}
  .cta-band{padding:36px 22px}
  .dl-buttons .btn{width:100%}
  .hero-float{left:0;bottom:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-copy h1{font-size:clamp(28px,8vw,34px)}
  .hero-facts span{font-size:12.5px}
  .step{padding-left:52px}
  .steps::before{left:15px}
  .step::before{left:11px}
  .footer-grid{grid-template-columns:1fr}
  .pill-link{width:100%;justify-content:center}
}