/* roulang page: index */
:root{
  --ink-900:#0E1A16;
  --ink-800:#14241E;
  --ink-600:#3A4A44;
  --ink-400:#6B7A74;
  --line:#E4E1D9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --brand:#1F8A6E;
  --brand-600:#176E58;
  --brand-050:#E7F3EE;
  --accent:#FF6B4A;
  --accent-600:#E4522F;
  --warn:#D98B2B;
  --error:#D14343;
  --ok:#2F9E7F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,26,22,.05),0 8px 24px -14px rgba(14,26,22,.14);
  --shadow-2:0 2px 4px rgba(14,26,22,.06),0 18px 40px -20px rgba(14,26,22,.22);
  --nav-w:232px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-800);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-050);color:var(--brand-600)}

/* ---------- 布局骨架 ---------- */
.app{display:flex;min-height:100vh}
.main-area{
  margin-left:var(--nav-w);
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:80px 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.section-head{max-width:720px;margin-bottom:40px}
.section-label{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  background:var(--brand-050);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  line-height:1.25;
  color:var(--ink-900);
}
.section-desc{margin-top:12px;color:var(--ink-600);font-size:16px;max-width:640px}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--ink-900);
  color:#fff;
  display:flex;
  flex-direction:column;
  z-index:60;
  transition:transform .32s cubic-bezier(.22,.61,.36,1);
}
.brand-wrap{
  padding:22px 24px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:#fff;
}
.brand-mark{
  display:inline-block;
  width:6px;height:18px;
  border-radius:3px;
  background:var(--accent);
}
.brand-sub{
  margin-top:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.52);
}
.nav{display:flex;flex-direction:column;padding:18px 0;gap:2px}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  height:48px;
  padding:0 24px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:color .24s ease,background-color .24s ease;
}
.nav-link::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--accent);
  transform:scaleY(0);
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.04)}
.nav-link.is-active{color:#fff;background:rgba(255,255,255,.07)}
.nav-link.is-active::before{transform:scaleY(1)}
.sidebar-foot{
  margin-top:auto;
  padding:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.foot-label{font-size:12px;letter-spacing:.1em;color:rgba(255,255,255,.45)}
.foot-value{font-family:var(--font-num);font-size:14px;color:#fff;margin:6px 0 16px}
.sidebar-close{
  display:none;
  position:absolute;
  top:16px;right:16px;
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
  background:transparent;
  color:#fff;
  font-size:20px;
  line-height:1;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease;
}
.sidebar-close:hover{background:var(--accent);border-color:var(--accent)}

/* ---------- 移动端横栏 ---------- */
.mobile-bar{
  display:none;
  align-items:center;
  justify-content:space-between;
  height:64px;
  padding:0 20px;
  background:var(--ink-900);
  color:#fff;
  position:sticky;
  top:0;
  z-index:58;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.menu-toggle{
  width:44px;height:44px;
  display:grid;
  place-items:center;
  gap:5px;
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--r-sm);
  background:transparent;
  cursor:pointer;
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  background:#fff;
  border-radius:2px;
}
.scrim{
  position:fixed;
  inset:0;
  background:rgba(14,26,22,.52);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
  z-index:55;
}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ---------- 倒计时条 ---------- */
.countdown{
  position:sticky;
  top:0;
  z-index:40;
  min-height:56px;
  background:var(--ink-900);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:8px 32px;
  flex-wrap:wrap;
}
.count-label{
  font-size:13px;
  letter-spacing:.1em;
  color:rgba(255,255,255,.68);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.count-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.count-grid{display:flex;align-items:center}
.count-cell{
  min-width:70px;
  padding:4px 14px;
  border-left:1px solid rgba(255,255,255,.14);
  text-align:center;
}
.count-cell:first-child{border-left:0}
.count-num{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:700;
  line-height:1.1;
  color:var(--accent);
}
.count-lab{font-size:11px;letter-spacing:.1em;color:rgba(255,255,255,.5)}

/* ---------- Hero ---------- */
.hero{padding:72px 0 84px;position:relative;overflow:hidden}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(14,26,22,.04) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--ink-400);
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--r-pill);
  padding:5px 14px;
}
.hero h1{
  margin-top:22px;
  font-size:clamp(2.4rem,4.4vw,3.6rem);
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
.hero-sub{
  margin-top:18px;
  font-size:18px;
  color:var(--ink-600);
  max-width:34ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.hero-metrics strong{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:26px;
  color:var(--ink-900);
  line-height:1.1;
}
.hero-metrics span{font-size:13px;color:var(--ink-400);letter-spacing:.04em}
.hero-figure{
  position:relative;
  margin:0;
  padding:10px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:calc(var(--r-lg) - 10px);
}
.frame-badge{
  position:absolute;
  top:-13px;right:20px;
  background:var(--ink-900);
  color:#fff;
  font-size:12px;
  letter-spacing:.1em;
  padding:6px 14px;
  border-radius:var(--r-pill);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent-600);transform:translateX(1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-800)}
.btn-outline:hover{border-color:var(--ink-800)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.28);
  color:#fff;
  min-height:40px;
  padding:0 18px;
  font-size:13px;
}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-sm{min-height:38px;padding:0 18px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.is-loading{pointer-events:none;opacity:.9}
.btn.is-loading::after{
  content:"";
  width:15px;height:15px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.text-link .arrow{transition:transform .24s ease}
.text-link:hover .arrow{transform:translateX(4px)}
.text-link:hover{color:var(--brand-600)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--brand-050);
  color:var(--brand);
  font-size:12px;
  letter-spacing:.06em;
  font-weight:600;
}
.badge-dark{background:rgba(14,26,22,.72);color:#fff;backdrop-filter:blur(2px)}

/* ---------- 卖点编号列表 ---------- */
.feature-list{border-top:1px solid var(--line)}
.feature-row{
  display:grid;
  grid-template-columns:130px 1fr;
  gap:28px;
  padding:32px 0;
  border-bottom:1px solid var(--line);
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.feature-row:hover{transform:translateX(4px)}
.feature-num{
  font-family:var(--font-num);
  font-size:74px;
  font-weight:800;
  line-height:.92;
  color:rgba(14,26,22,.13);
  transition:color .28s ease;
}
@supports (-webkit-text-stroke:1px #000){
  .feature-num{color:transparent;-webkit-text-stroke:1.5px rgba(58,74,68,.5)}
  .feature-row:hover .feature-num{color:var(--brand);-webkit-text-stroke-color:var(--brand)}
}
.feature-body h3{font-size:20px;font-weight:600;color:var(--ink-900)}
.feature-body p{margin-top:10px;font-size:16px;color:var(--ink-600);max-width:64ch}

/* ---------- 图墙 ---------- */
.wall{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  grid-auto-rows:176px;
  gap:16px;
}
.wall-item{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--ink-800);
  display:block;
  transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s ease;
}
.wall-item img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .42s cubic-bezier(.22,.61,.36,1);
}
.wall-item::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(14,26,22,.72) 0%,rgba(14,26,22,.18) 45%,rgba(14,26,22,0) 75%);
  transition:background-color .28s ease;
}
.wall-item:hover{transform:scale(1.03);box-shadow:var(--shadow-2);z-index:2}
.wall-item:hover img{transform:scale(1.04)}
.wall-item:hover::after{background:linear-gradient(to top,rgba(14,26,22,.85) 0%,rgba(14,26,22,.3) 50%,rgba(14,26,22,.06) 80%)}
.wall-info{
  position:absolute;
  left:18px;right:18px;bottom:16px;
  z-index:2;
  color:#fff;
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.wall-item:hover .wall-info{transform:translateY(-8px)}
.wall-tag{
  display:inline-block;
  font-size:11px;
  letter-spacing:.1em;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);
  margin-bottom:8px;
}
.wall-info h3{font-size:16px;font-weight:600}
.wall-a{grid-column:span 7;grid-row:span 2}
.wall-b{grid-column:span 5}
.wall-c{grid-column:span 5}
.wall-d{grid-column:span 4}
.wall-e{grid-column:span 4}
.wall-f{grid-column:span 4}

/* ---------- 阶段进度 ---------- */
.stage-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.stage-track{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.stage-item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:20px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.stage-index{
  width:44px;height:44px;
  border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-050);
  color:var(--brand);
  font-family:var(--font-num);
  font-weight:700;
  font-size:15px;
}
.stage-item h3{font-size:18px;font-weight:600;color:var(--ink-900)}
.stage-item p{margin-top:6px;font-size:15px;color:var(--ink-600);max-width:52ch}
.stage-figure{margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.stage-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.stage-figure figcaption{
  padding:14px 18px;
  background:var(--surface);
  font-size:13px;
  color:var(--ink-400);
}

/* ---------- 数据概览 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s ease;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.stat-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:34px;
  font-weight:700;
  color:var(--ink-900);
  line-height:1.1;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--ink-400);margin-left:4px}
.stat-card p{margin-top:8px;font-size:14px;color:var(--ink-400)}

/* ---------- 最新信息 ---------- */
.news-layout{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:48px;
  align-items:start;
}
.news-aside{position:sticky;top:96px}
.news-aside h2{
  font-size:clamp(1.5rem,2.2vw,1.9rem);
  line-height:1.3;
  color:var(--ink-900);
  margin-bottom:12px;
}
.news-aside p{font-size:15px;color:var(--ink-600);margin-bottom:20px}
.news-list{border-top:1px solid var(--line)}
.post-item{
  position:relative;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 20px;
  border-bottom:1px solid var(--line);
  transition:background-color .24s ease;
}
.post-item::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--accent);
  transform:scaleY(0);
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.post-item:hover{background:var(--paper)}
.post-item:hover::before{transform:scaleY(1)}
.post-main{min-width:0;flex:1 1 auto}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.post-date{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--ink-400);
}
.post-title{
  margin:10px 0 6px;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s ease;
}
.post-item:hover .post-title{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.post-summary{
  font-size:14px;
  color:var(--ink-400);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.post-arrow{
  flex:0 0 auto;
  margin-top:22px;
  color:var(--ink-400);
  font-size:18px;
  transition:transform .24s ease,color .24s ease;
}
.post-item:hover .post-arrow{transform:translateX(4px);color:var(--accent)}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  padding:56px 24px;
  text-align:center;
  color:var(--ink-400);
  margin:24px 0;
}
.empty-icon{
  display:block;
  font-size:26px;
  color:var(--brand);
  margin-bottom:10px;
}
.empty-state p{font-size:15px}

/* ---------- CTA / 表单 ---------- */
.cta-block{
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  color:#fff;
}
.cta-left h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  line-height:1.25;
  color:#fff;
}
.cta-left p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);max-width:36ch}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:10px}
.cta-points li{
  font-size:14px;
  color:rgba(255,255,255,.78);
  padding-left:18px;
  position:relative;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand);
}
.signup-form .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.signup-form label{font-size:13px;color:rgba(255,255,255,.72);letter-spacing:.04em}
.signup-form input[type=text],
.signup-form input[type=tel]{
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-800);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.signup-form input::placeholder{color:#9AA9A2}
.signup-form input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(31,138,110,.3);
}
.signup-form input.is-error{border-color:var(--error);box-shadow:0 0 0 2px rgba(209,67,67,.2)}
.check{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  line-height:1.7;
  margin:6px 0 20px;
  cursor:pointer;
}
.check input{
  appearance:none;
  -webkit-appearance:none;
  width:18px;height:18px;
  margin-top:2px;
  border-radius:4px;
  border:1px solid rgba(255,255,255,.4);
  background:transparent;
  cursor:pointer;
  flex:0 0 auto;
  position:relative;
  transition:background-color .2s ease,border-color .2s ease;
}
.check input:checked{background:var(--brand);border-color:var(--brand)}
.check input:checked::after{
  content:"";
  position:absolute;
  left:5px;top:1px;
  width:5px;height:10px;
  border:solid #fff;
  border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.form-msg{
  margin-top:14px;
  font-size:14px;
  min-height:22px;
  color:rgba(255,255,255,.8);
}
.form-msg.is-ok{color:var(--ok)}
.form-msg.is-error{color:#FF9A85}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  transition:padding-left .24s ease,color .24s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:-14px;top:50%;
  width:4px;height:22px;
  border-radius:2px;
  background:var(--brand);
  transform:translateY(-50%) scaleY(0);
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.faq-item.is-open .faq-q::before{transform:translateY(-50%) scaleY(1)}
.faq-item.is-open .faq-q{padding-left:10px}
.faq-icon{
  position:relative;
  flex:0 0 18px;
  width:18px;height:18px;
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a-inner{
  padding:16px 0 22px;
  border-top:1px solid var(--line);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  max-width:70ch;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--ink-900);
  color:#fff;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr 1fr;
  gap:40px;
  padding:64px 0 40px;
}
.footer-slogan{margin-top:14px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-copy{margin-top:18px;font-size:13px;color:rgba(255,255,255,.42);font-family:var(--font-num)}
.footer-col h3{
  font-size:13px;
  letter-spacing:.12em;
  color:rgba(255,255,255,.5);
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.78);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{
  font-size:14px;
  color:rgba(255,255,255,.78);
  font-family:var(--font-num);
}
.footer-note{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.42);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  width:44px;height:44px;
  border-radius:50%;
  border:0;
  background:var(--ink-900);
  color:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
  z-index:50;
  box-shadow:var(--shadow-2);
  opacity:0;
  pointer-events:none;
  transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,background-color .24s ease;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--accent)}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .shell{max-width:1160px}
}
@media (max-width:1199px){
  :root{--nav-w:200px}
  .hero h1{font-size:clamp(2.1rem,3.6vw,2.9rem)}
  .shell{padding:0 24px}
  .feature-num{font-size:64px}
}
@media (max-width:1023px){
  .sidebar{
    top:0;bottom:0;left:auto;right:0;
    width:82vw;
    max-width:340px;
    transform:translateX(100%);
    box-shadow:var(--shadow-2);
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar-close{display:block}
  .mobile-bar{display:flex}
  .main-area{margin-left:0}
  .countdown{padding:8px 20px}
  .hero{padding:56px 0 64px}
  .section{padding:64px 0}
  .cta-block{padding:36px}
}
@media (max-width:767px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-sub{font-size:16px}
  .hero-metrics{gap:24px}
  .feature-row{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .feature-num{font-size:52px}
  .wall{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .wall-a,.wall-b,.wall-c,.wall-d,.wall-e,.wall-f{grid-column:span 1;grid-row:span 1}
  .wall-a{grid-column:span 2}
  .news-layout{grid-template-columns:1fr;gap:28px}
  .news-aside{position:static}
  .stage-wrap{grid-template-columns:1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .cta-block{grid-template-columns:1fr;gap:32px;padding:32px 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .count-grid{width:100%;justify-content:space-between}
  .count-cell{min-width:0;flex:1 1 0;padding:4px 8px}
  .count-num{font-size:22px}
  .post-summary{white-space:normal}
}
@media (max-width:479px){
  .shell{padding:0 18px}
  .section{padding:48px 0}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .count-lab{font-size:10px}
  .btn{width:100%}
  .sidebar-foot .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#0E1A16;
  --ink-800:#14241E;
  --ink-600:#3A4A44;
  --ink-400:#6B7A74;
  --line:#E4E1D9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --brand:#1F8A6E;
  --brand-600:#176E58;
  --brand-050:#E7F3EE;
  --accent:#FF6B4A;
  --accent-600:#E4522F;
  --warn:#D98B2B;
  --error:#D14343;
  --ok:#2F9E7F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,26,22,.05),0 8px 24px -14px rgba(14,26,22,.14);
  --shadow-2:0 2px 4px rgba(14,26,22,.06),0 18px 40px -20px rgba(14,26,22,.22);
  --sidebar-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-050);color:var(--ink-900)}

/* ---------- 骨架 ---------- */
.layout{min-height:100vh}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink-900);
  display:flex;
  flex-direction:column;
  z-index:60;
  overflow-y:auto;
}
.main-wrap{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--paper);
}
.shell{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
main{flex:1}

/* ---------- 侧栏 ---------- */
.sidebar-top{
  height:72px;
  display:flex;
  align-items:center;
  padding:0 24px;
  border-bottom:1px solid rgba(255,255,255,.12);
  flex:0 0 auto;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
}
.brand-mark{
  width:10px;height:10px;
  border-radius:3px;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(255,107,74,.16);
  flex:0 0 auto;
}
.side-nav{padding:18px 0;display:flex;flex-direction:column;flex:1 1 auto}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  height:48px;
  padding:0 24px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:0;
  border-radius:0 3px 3px 0;
  background:var(--accent);
  transform:translateY(-50%);
  transition:height .24s var(--ease);
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.04)}
.nav-item.is-active{color:#fff;background:rgba(255,255,255,.04)}
.nav-item.is-active::before{height:22px}
.sidebar-foot{
  padding:22px 24px 28px;
  border-top:1px solid rgba(255,255,255,.12);
  flex:0 0 auto;
}
.side-label{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.48);text-transform:uppercase}
.side-phone{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:18px;
  font-weight:600;
  color:#fff;
  margin:6px 0 16px;
}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;
  border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r-pill);
  color:rgba(255,255,255,.86);
  font-size:14px;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.btn-ghost-light:hover{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.06)}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:50;
  height:64px;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
  background:var(--ink-900);
}
.menu-toggle{
  width:42px;height:42px;
  display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;
  background:transparent;border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-sm);
  cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:rgba(255,255,255,.85);border-radius:2px}
.scrim{display:none;position:fixed;inset:0;background:rgba(14,26,22,.52);z-index:55}

/* ---------- 通用组件 ---------- */
.section{padding:56px 0}
.section-title{
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  line-height:1.25;
  margin-bottom:8px;
}
.section-sub{font-size:15px;color:var(--ink-400);margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--brand-050);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),opacity .2s;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-800)}
.btn-ghost:hover{border-color:var(--ink-800)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.link-arrow span{display:inline-block;transition:transform .22s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding-top:40px}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-400);
  overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--ink-400);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{
  color:var(--ink-600);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  max-width:46vw;
}

/* ---------- 文章头部 ---------- */
.post-head{padding:26px 0 32px;max-width:860px}
.post-head .badge{margin-bottom:16px}
.post-title{
  font-size:clamp(2rem,3.6vw,3.1rem);
  font-weight:700;
  line-height:1.14;
  letter-spacing:-.02em;
  margin-bottom:18px;
  overflow-wrap:anywhere;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);
}
.post-meta .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.post-meta .dot{color:var(--line)}
.head-rule{margin-top:28px}

/* ---------- 正文排版 ---------- */
.article-body{
  max-width:760px;
  padding:40px 0 8px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin:48px 0 20px;
  font-size:clamp(1.3rem,2.2vw,1.7rem);
  line-height:1.3;
  color:var(--ink-900);
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.32em;bottom:.32em;
  width:4px;border-radius:2px;background:var(--brand);
}
.article-body h3{margin:32px 0 14px;font-size:1.25rem;font-weight:600;color:var(--ink-900)}
.article-body h4{margin:26px 0 12px;font-size:1.05rem;font-weight:600;color:var(--ink-800)}
.article-body ul{margin:0 0 1.4em;padding-left:2px}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.article-body ol{margin:0 0 1.4em;padding-left:1.6em;list-style:decimal}
.article-body ol li{margin-bottom:.5em}
.article-body ol li::marker{color:var(--brand);font-weight:600}
.article-body blockquote{
  margin:0 0 1.4em;
  padding:18px 22px;
  background:var(--brand-050);
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:1.04rem;
  color:var(--ink-800);
}
.article-body img{margin:26px auto;border-radius:var(--r-md);box-shadow:var(--shadow-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-600)}
.article-body strong{color:var(--ink-800)}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:0 0 1.4em;
  font-size:15px;
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--line);
  padding:12px 10px;
  text-align:left;
  white-space:nowrap;
}
.article-body th{font-weight:600;color:var(--ink-900)}
.article-body code{
  background:#F1EFE8;
  border-radius:var(--r-sm);
  padding:2px 7px;
  font-family:var(--font-num);
  font-size:.92em;
  color:var(--ink-800);
}
.article-body pre{
  background:#F1EFE8;
  border-radius:var(--r-sm);
  padding:16px 18px;
  overflow-x:auto;
  margin:0 0 1.4em;
}
.article-body pre code{background:transparent;padding:0}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:760px;
  margin:38px 0 8px;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  text-align:center;
}
.empty-state p{font-size:16px;color:var(--ink-400);margin-bottom:22px}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;align-items:flex-start;gap:14px;
  margin:44px 0 0;
  padding:20px 22px;
  background:var(--brand-050);
  border-radius:var(--r-md);
  max-width:760px;
}
.notice-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:var(--r-pill);
  background:var(--brand);
  color:#fff;
  font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-num);
  margin-top:3px;
}
.notice p{font-size:15px;color:var(--ink-800);line-height:1.7}

/* ---------- 继续阅读 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:26px}
.rel-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:20px 22px 24px}
.rel-body h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--ink-900)}
.rel-body p{font-size:14px;color:var(--ink-400);line-height:1.75}
.back-row{margin-top:30px}

/* ---------- CTA ---------- */
.cta-dark{
  margin-top:16px;
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-dark h2{font-size:clamp(1.4rem,2.2vw,1.85rem);color:#fff;line-height:1.25;margin-bottom:10px}
.cta-dark p{font-size:15px;color:rgba(255,255,255,.62);max-width:520px;line-height:1.75}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);margin-top:72px}
.footer-grid{
  border-top:1px solid rgba(255,255,255,.12);
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1fr;
  gap:40px;
  padding:56px 0 40px;
}
.footer-brand .brand{margin-bottom:14px}
.footer-slogan{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-copy{font-size:13px;color:rgba(255,255,255,.42);font-family:var(--font-num)}
.footer-col h3{
  font-size:14px;font-weight:600;color:#fff;
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68);font-family:var(--font-num);font-variant-numeric:tabular-nums;line-height:1.9}
.footer-note{font-size:14px;color:rgba(255,255,255,.62);line-height:1.85}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.42);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink-800);
  font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  box-shadow:var(--shadow-1);
  opacity:0;pointer-events:none;
  transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),background .2s var(--ease),color .2s var(--ease);
  z-index:70;
}
.to-top.is-on{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---------- 进入动效 ---------- */
.rise{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.rise.is-in{opacity:1;transform:none}

@media (max-width:1199px){
  :root{--sidebar-w:200px}
  .shell{padding:0 24px}
}
@media (max-width:1023px){
  .sidebar{
    left:auto;right:0;
    width:82vw;max-width:340px;
    transform:translateX(102%);
    transition:transform .3s var(--ease);
    box-shadow:-24px 0 48px -24px rgba(14,26,22,.45);
  }
  .sidebar.is-open{transform:none}
  .main-wrap{margin-left:0}
  .mobile-bar{display:flex}
  .scrim{display:block;opacity:0;pointer-events:none;transition:opacity .24s var(--ease)}
  .scrim.is-on{opacity:1;pointer-events:auto}
  .breadcrumb .current{max-width:38vw}
}
@media (max-width:767px){
  .shell{padding:0 20px}
  .section{padding:44px 0}
  .crumb-wrap{padding-top:26px}
  .post-head{padding:20px 0 24px}
  .article-body{font-size:16.5px;padding-top:30px}
  .rel-grid{grid-template-columns:1fr}
  .cta-dark{padding:28px;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:40px 0 30px}
  .footer-brand{grid-column:1 / -1}
  .to-top{right:18px;bottom:18px}
}
@media (max-width:479px){
  .shell{padding:0 16px}
  .post-title{font-size:1.72rem}
  .breadcrumb .current{max-width:30vw}
  .btn{width:100%}
  .cta-dark .btn,.rel-card .btn{width:auto}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .rise{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E1A16;
  --ink-800:#14241E;
  --ink-600:#3A4A44;
  --ink-400:#6B7A74;
  --line:#E4E1D9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --brand:#1F8A6E;
  --brand-600:#176E58;
  --brand-050:#E7F3EE;
  --accent:#FF6B4A;
  --accent-600:#E4522F;
  --warn:#D98B2B;
  --error:#D14343;
  --ok:#2F9E7F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,26,22,.05),0 8px 24px -14px rgba(14,26,22,.14);
  --shadow-2:0 2px 4px rgba(14,26,22,.06),0 18px 40px -20px rgba(14,26,22,.22);
  --sidebar-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-800);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(2.1rem,4.6vw,3.6rem);line-height:1.14;letter-spacing:-.02em;font-weight:700;color:var(--ink-900);}
h2{font-size:clamp(1.5rem,2.5vw,2.1rem);line-height:1.28;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
h3{font-size:1.25rem;font-weight:600;color:var(--ink-900);line-height:1.45;}
p{color:var(--ink-600);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.num,.stat-value,.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 布局骨架 ============ */
.layout{display:flex;min-height:100vh;}
.main{flex:1;min-width:0;margin-left:var(--sidebar-w);background:var(--paper);}
.shell{max-width:1180px;margin:0 auto;padding:0 32px;}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--ink-900);color:#fff;display:flex;flex-direction:column;
  z-index:60;
}
.sidebar .brand{
  display:flex;align-items:center;gap:10px;
  height:72px;padding:0 24px;font-size:17px;font-weight:600;letter-spacing:.01em;
  border-bottom:1px solid rgba(255,255,255,.12);color:#fff;
}
.brand-mark{
  width:10px;height:10px;border-radius:3px;background:var(--accent);
  box-shadow:none;flex:none;
}
.side-nav{padding:18px 0;flex:1;overflow-y:auto;}
.side-nav a{
  position:relative;display:flex;align-items:center;
  height:48px;padding:0 24px;font-size:15px;color:rgba(255,255,255,.72);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:center;transition:transform .24s var(--ease);
}
.side-nav a:hover{color:#fff;background:rgba(255,255,255,.04);}
.side-nav a.active{color:#fff;background:rgba(255,255,255,.05);}
.side-nav a.active::before{transform:scaleY(1);}
.side-foot{
  padding:20px 24px 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;line-height:1.9;color:rgba(255,255,255,.55);
}
.side-foot .side-phone{color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.side-foot .btn-mini{
  margin-top:14px;display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border:1px solid rgba(255,255,255,.32);border-radius:var(--r-pill);
  color:#fff;font-size:13px;transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.side-foot .btn-mini:hover{border-color:#fff;transform:translateX(1px);}

.mobile-bar{display:none;}
.drawer-mask{display:none;}

/* ============ 页头 Hero ============ */
.page-head{
  position:relative;overflow:hidden;
  background-color:var(--ink-900);
  background-image:linear-gradient(100deg,rgba(14,26,22,.94) 0%,rgba(14,26,22,.82) 48%,rgba(14,26,22,.66) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:96px 0 84px;
}
.page-head .shell{position:relative;z-index:2;}
.crumb{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:13px;color:rgba(255,255,255,.6);margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:1px;transition:color .24s var(--ease),border-color .24s var(--ease);}
.crumb a:hover{color:#fff;border-color:#fff;}
.crumb .sep{opacity:.5;}
.page-head h1{color:#fff;max-width:16em;}
.page-head .head-tag{
  display:inline-flex;align-items:center;gap:8px;height:24px;padding:0 12px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.12);color:#fff;
  font-size:12px;letter-spacing:.08em;margin-bottom:20px;
}
.head-lead{
  margin-top:22px;max-width:760px;font-size:17px;line-height:1.9;
  color:rgba(255,255,255,.78);
}
.head-meta{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:32px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
}
.head-meta .meta-item{min-width:96px;}
.head-meta .meta-value{
  font-size:26px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.head-meta .meta-label{font-size:13px;color:rgba(255,255,255,.6);margin-top:4px;}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section.tight{padding:56px 0;}
.section-head{margin-bottom:40px;max-width:720px;}
.section-head h2{display:flex;align-items:center;gap:14px;}
.section-head h2::before{
  content:"";width:4px;height:1.05em;border-radius:2px;background:var(--brand);flex:none;
}
.section-head p{margin-top:14px;font-size:16px;line-height:1.9;}

/* ============ 编号长条列表 ============ */
.num-list{border-top:1px solid var(--line);}
.num-row{
  display:grid;grid-template-columns:118px 1fr;gap:32px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:transform .32s var(--ease),background .32s var(--ease);
}
.num-row:hover{transform:translateX(4px);}
.num-row .num{
  font-size:clamp(46px,6vw,76px);font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px #C9C4B7;letter-spacing:-.03em;
  transition:color .32s var(--ease),-webkit-text-stroke-color .32s var(--ease);
}
.num-row:hover .num{color:var(--brand);-webkit-text-stroke-color:var(--brand);}
.num-row h3{font-size:1.25rem;margin-bottom:8px;}
.num-row p{font-size:16px;line-height:1.85;max-width:62ch;}

/* ============ 阶段进度 ============ */
.stage-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);padding:32px;
}
.stage{display:grid;grid-template-columns:180px 1fr 74px;gap:24px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);}
.stage:last-child{border-bottom:0;padding-bottom:0;}
.stage:first-child{padding-top:0;}
.stage-name{font-size:16px;font-weight:600;color:var(--ink-900);}
.stage-name span{display:block;font-size:13px;font-weight:400;color:var(--ink-400);margin-top:2px;}
.stage-bar{height:8px;border-radius:var(--r-pill);background:var(--brand-050);overflow:hidden;}
.stage-bar i{display:block;height:100%;border-radius:var(--r-pill);background:var(--brand);}
.stage-bar i.hot{background:var(--accent);}
.stage-pct{font-size:14px;color:var(--ink-400);text-align:right;font-variant-numeric:tabular-nums;}

/* ============ 配图区 ============ */
.media-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.media-item{
  position:relative;overflow:hidden;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--surface);
}
.media-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.media-item:hover img{transform:scale(1.03);}
.media-a{grid-column:span 7;grid-row:span 2;min-height:420px;}
.media-b{grid-column:span 5;min-height:198px;}
.media-c{grid-column:span 5;min-height:198px;}
.media-cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  background:linear-gradient(180deg,rgba(14,26,22,0) 0%,rgba(14,26,22,.78) 100%);
  color:#fff;font-size:14px;transition:transform .32s var(--ease);
}
.media-item:hover .media-cap{transform:translateY(-6px);}
.media-cap b{
  display:inline-block;height:22px;line-height:22px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);font-size:12px;font-weight:500;letter-spacing:.06em;margin-right:8px;
}

/* ============ 页内锚点清单 ============ */
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:8px 0;box-shadow:var(--shadow-1);
}
.toc li{border-bottom:1px solid var(--line);}
.toc li:last-child{border-bottom:0;}
.toc a{
  display:grid;grid-template-columns:52px 1fr auto;gap:16px;align-items:center;
  padding:20px 26px;transition:background .24s var(--ease),transform .24s var(--ease);
}
.toc a:hover{background:var(--paper);transform:translateX(3px);}
.toc .toc-index{
  font-size:13px;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.toc .toc-title{font-size:17px;font-weight:600;color:var(--ink-900);}
.toc .toc-desc{display:block;font-size:14px;font-weight:400;color:var(--ink-400);margin-top:4px;}
.toc .toc-arrow{color:var(--brand);font-size:18px;transition:transform .24s var(--ease);}
.toc a:hover .toc-arrow{transform:translateX(4px);}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--ink-900);border-radius:var(--r-lg);
  padding:44px 48px;display:flex;flex-wrap:wrap;gap:28px;
  align-items:center;justify-content:space-between;
}
.cta-bar h2{color:#fff;font-size:clamp(1.35rem,2.2vw,1.75rem);}
.cta-bar p{color:rgba(255,255,255,.68);font-size:15px;margin-top:10px;max-width:32em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.34);color:#fff;}
.btn-ghost:hover{border-color:#fff;transform:translateY(-1px);}
.btn-line{background:var(--surface);border:1px solid var(--line);color:var(--ink-800);}
.btn-line:hover{border-color:var(--ink-800);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:14px;font-weight:600;
}
.link-more i{font-style:normal;transition:transform .24s var(--ease);}
.link-more:hover i{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:20px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:#fff;}
.footer-slogan{margin-top:14px;font-size:14px;color:rgba(255,255,255,.6);}
.footer-copy{margin-top:16px;font-size:13px;color:rgba(255,255,255,.42);}
.footer-col h3{font-size:14px;letter-spacing:.08em;color:#fff;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.72);transition:color .24s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-contact li{color:rgba(255,255,255,.66);font-variant-numeric:tabular-nums;}
.footer-note{font-size:14px;color:rgba(255,255,255,.6);line-height:1.9;}
.footer-bottom{padding-top:22px;text-align:center;font-size:13px;color:rgba(255,255,255,.42);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink-900);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease),background .24s var(--ease);z-index:70;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--accent);}

/* ============ 进入动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 断点 ============ */
@media (min-width:1440px){
  .shell{max-width:1260px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
  .num-row{grid-template-columns:96px 1fr;gap:24px;}
  .page-head{padding:80px 0 68px;}
}
@media (max-width:1023px){
  .layout{display:block;}
  .main{margin-left:0;padding-top:64px;}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:64px;padding:0 20px;
    background:var(--ink-900);z-index:80;
  }
  .mobile-bar .brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:#fff;}
  .menu-toggle{
    width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;gap:5px;
    align-items:center;border-radius:var(--r-sm);
  }
  .menu-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
  .sidebar{
    top:0;left:auto;right:0;width:82vw;max-width:340px;height:100vh;
    transform:translateX(100%);transition:transform .32s var(--ease);
  }
  .sidebar.open{transform:translateX(0);}
  .drawer-mask{
    display:block;position:fixed;inset:0;background:rgba(14,26,22,.52);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:59;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  .page-head{padding:64px 0 56px;}
  .section{padding:56px 0;}
  .section.tight{padding:44px 0;}
}
@media (max-width:767px){
  .shell{padding:0 20px;}
  .media-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .media-a,.media-b,.media-c{grid-column:span 1;grid-row:auto;min-height:190px;}
  .media-a{grid-column:span 2;}
  .num-row{grid-template-columns:1fr;gap:12px;padding:24px 0;}
  .num-row .num{font-size:44px;}
  .stage{grid-template-columns:1fr;gap:10px;}
  .stage-pct{text-align:left;}
  .cta-bar{padding:32px 24px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .toc a{grid-template-columns:1fr auto;padding:18px 20px;}
  .toc .toc-index{display:none;}
}
@media (max-width:479px){
  body{font-size:15px;}
  .shell{padding:0 16px;}
  .page-head{padding:52px 0 46px;}
  .page-head h1{font-size:1.85rem;}
  .head-lead{font-size:15.5px;}
  .head-meta{gap:20px;}
  .head-meta .meta-value{font-size:22px;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .media-a{min-height:170px;}
  .stage-wrap{padding:22px 18px;}
  .toc .toc-title{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E1A16;
  --ink-800:#14241E;
  --ink-600:#3A4A44;
  --ink-400:#6B7A74;
  --line:#E4E1D9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --brand:#1F8A6E;
  --brand-600:#176E58;
  --brand-050:#E7F3EE;
  --accent:#FF6B4A;
  --accent-600:#E4522F;
  --warn:#D98B2B;
  --error:#D14343;
  --ok:#2F9E7F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,26,22,.05),0 8px 24px -14px rgba(14,26,22,.14);
  --shadow-2:0 2px 4px rgba(14,26,22,.06),0 18px 40px -20px rgba(14,26,22,.22);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:72px;--sp-9:96px;
  --sidebar-w:232px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-800);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,border-color .22s ease;}
a:hover{color:var(--brand-600);}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 骨架 ============ */
.page-shell{display:flex;min-height:100vh;}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.content-area{flex:1 1 auto;min-width:0;margin-left:var(--sidebar-w);}
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.sec-head{margin-bottom:32px;}
.sec-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-050);border-radius:var(--r-pill);
  padding:3px 12px;margin-bottom:12px;font-weight:600;
}
h2.sec-title{
  font-size:clamp(1.6rem,2.6vw,2.2rem);line-height:1.25;letter-spacing:-.01em;
  font-weight:700;position:relative;padding-left:16px;
}
h2.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  background:var(--brand);border-radius:2px;
}
.sec-sub{color:var(--ink-400);font-size:15px;margin-top:10px;padding-left:16px;}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink-900);color:#fff;display:flex;flex-direction:column;
  z-index:60;
}
.sidebar .brand{
  height:72px;display:flex;align-items:center;gap:10px;padding:0 24px;
  color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em;
  border-bottom:1px solid rgba(255,255,255,.12);flex:0 0 auto;
}
.brand-mark{
  width:10px;height:10px;border-radius:3px;background:var(--accent);
  display:inline-block;flex:0 0 auto;
}
.sidebar .brand:hover{color:#fff;}
.side-nav{padding:16px 0;flex:1 1 auto;overflow-y:auto;}
.side-nav a{
  display:flex;align-items:center;height:48px;padding:0 24px;font-size:15px;
  color:rgba(255,255,255,.72);position:relative;
  transition:color .22s ease,background-color .22s ease,padding .22s ease;
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:center;transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.side-nav a:hover{color:#fff;background:rgba(255,255,255,.04);padding-left:28px;}
.side-nav a.is-active{color:#fff;background:rgba(255,255,255,.06);font-weight:600;}
.side-nav a.is-active::before{transform:scaleY(1);}
.side-foot{
  padding:20px 24px 26px;border-top:1px solid rgba(255,255,255,.12);flex:0 0 auto;
}
.side-foot p{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;margin-bottom:14px;}
.side-foot .num{color:rgba(255,255,255,.85);}
.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.35);color:#fff;font-size:13px;
  transition:border-color .22s ease,background-color .22s ease,transform .22s ease;
}
.btn-ghost-sm:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff;transform:translateY(-1px);}

/* ============ 移动端栏与抽屉 ============ */
.mobile-bar{display:none;}
.overlay{
  position:fixed;inset:0;background:rgba(14,26,22,.52);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:70;
}
.overlay.is-open{opacity:1;visibility:visible;}
body.drawer-open{overflow:hidden;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,opacity .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translate(1px,-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:var(--surface);color:var(--ink-800);border:1px solid var(--line);}
.btn-outline:hover{border-color:var(--ink-800);color:var(--ink-800);transform:translate(1px,-1px);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:#fff;color:var(--ink-900);transform:translate(1px,-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-arrow{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-arrow span{transition:transform .22s ease;display:inline-block;}
.link-arrow:hover span{transform:translateX(4px);}

/* ============ 页面头部 ============ */
.page-hero{padding:64px 0 0;position:relative;}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(14,26,22,.04) 0 1px,transparent 1px 26px);
  opacity:.9;
}
.crumb{position:relative;font-size:13px;color:var(--ink-400);display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line);}
.page-hero h1{
  position:relative;
  font-size:clamp(2.4rem,5vw,4.2rem);font-weight:700;letter-spacing:-.02em;
  line-height:1.12;margin:20px 0 18px;max-width:16em;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.lede{
  position:relative;font-size:18px;color:var(--ink-600);max-width:44em;line-height:1.85;
}
.hero-tags{position:relative;display:flex;gap:10px;flex-wrap:wrap;margin-top:24px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand);font-size:12px;letter-spacing:.04em;font-weight:600;
}
.badge-dark{background:var(--ink-900);color:#fff;}

/* ============ 横幅图 ============ */
.banner-wrap{padding:40px 0 0;}
.banner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);
}
.banner img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.banner-cap{
  position:absolute;left:0;right:0;bottom:0;padding:22px 26px;
  background:linear-gradient(to top,rgba(14,26,22,.72),rgba(14,26,22,0));
  color:#fff;font-size:14px;letter-spacing:.02em;
}
.banner-cap strong{display:block;font-size:18px;font-weight:600;margin-bottom:2px;}

/* ============ 术语对照表 ============ */
.term-table{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.term-row{
  display:grid;grid-template-columns:220px 1fr;gap:28px;
  padding:22px 28px;border-top:1px solid var(--line);
  transition:background-color .22s ease,padding .22s ease;
}
.term-row:first-child{border-top:0;}
.term-row:hover{background:var(--paper);}
.term-row dt{
  font-size:16px;font-weight:600;color:var(--ink-900);display:flex;align-items:baseline;gap:8px;
}
.term-row dt::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);flex:0 0 auto;transform:translateY(-2px);
}
.term-row dd{margin:0;font-size:15.5px;color:var(--ink-600);line-height:1.85;}
.term-note{
  margin-top:20px;font-size:14px;color:var(--ink-400);
}

/* ============ FAQ ============ */
.faq-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:0;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;justify-content:space-between;
  padding:22px 26px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  position:relative;transition:background-color .22s ease,color .22s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;background:var(--brand);
  border-radius:0 3px 3px 0;transform:scaleY(0);transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.faq-q:hover{color:var(--brand);background:var(--paper);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-400);border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s cubic-bezier(.22,.61,.36,1);
}
.faq-a-inner{
  padding:0 26px 24px;font-size:16px;line-height:1.8;color:var(--ink-600);
  border-top:1px solid var(--line);padding-top:18px;margin:0 0 0;
}
.faq-a-inner p+p{margin-top:12px;}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--brand-050);border-radius:var(--r-md);padding:20px 24px;
  border-left:3px solid var(--brand);
}
.notice-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;margin-top:2px;
}
.notice p{font-size:15px;color:var(--ink-600);}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink-900);border-radius:var(--r-lg);padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  border-radius:50%;border:1px solid rgba(255,255,255,.08);pointer-events:none;
}
.cta-text{position:relative;max-width:36em;}
.cta-text h3{color:#fff;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:700;letter-spacing:-.01em;}
.cta-text p{color:rgba(255,255,255,.68);font-size:15px;margin-top:8px;}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;margin-top:72px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:40px;
  padding:64px 0 40px;border-top:1px solid rgba(255,255,255,.12);
}
.site-footer .brand{
  color:#fff;font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px;
}
.site-footer .brand:hover{color:#fff;}
.footer-slogan{color:rgba(255,255,255,.7);font-size:14px;margin-top:14px;}
.footer-copy{color:rgba(255,255,255,.45);font-size:13px;margin-top:8px;font-family:var(--font-num);}
.footer-col h3{
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(255,255,255,.5);font-weight:600;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:15px;}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{color:rgba(255,255,255,.78);font-size:14px;line-height:1.9;}
.footer-note{color:rgba(255,255,255,.6);font-size:14px;line-height:1.9;}
.footer-bottom{
  text-align:center;font-size:13px;color:rgba(255,255,255,.42);
  padding:22px 0 32px;border-top:1px solid rgba(255,255,255,.08);
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink-900);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);z-index:50;opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease,background-color .26s ease,transform .26s ease;
  font-size:18px;line-height:1;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .shell{max-width:1280px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
  .shell{padding:0 24px;}
  .term-row{grid-template-columns:180px 1fr;gap:20px;padding:20px 22px;}
}
@media (max-width:1023px){
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 20px;background:var(--ink-900);position:sticky;top:0;z-index:80;
  }
  .mobile-bar .brand{color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px;}
  .mobile-bar .brand:hover{color:#fff;}
  .menu-toggle{
    width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;
    align-items:center;gap:5px;border-radius:var(--r-sm);
  }
  .menu-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .24s ease,opacity .24s ease;}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .sidebar{
    transform:translateX(100%);width:82vw;max-width:340px;left:auto;right:0;
    transition:transform .3s cubic-bezier(.22,.61,.36,1);
  }
  .sidebar.is-open{transform:none;}
  .content-area{margin-left:0;}
  .section{padding:48px 0;}
  .page-hero{padding-top:40px;}
  .cta-band{padding:32px 26px;}
}
@media (max-width:767px){
  .shell{padding:0 20px;}
  body{font-size:16px;}
  .page-hero h1{margin:16px 0 14px;}
  .lede{font-size:16.5px;}
  .term-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .term-row dt{font-size:15.5px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a-inner{padding:0 20px 20px;padding-top:16px;font-size:15.5px;}
  .banner img{aspect-ratio:16/10;}
  .banner-cap{padding:16px 18px;}
  .banner-cap strong{font-size:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .shell{padding:0 16px;}
  .section{padding:40px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{border-radius:var(--r-md);padding:26px 20px;}
  .hero-tags{gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}