/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --ink:#14242B;
  --copper:#B85C38;
  --stone:#4E6B75;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --dark:#101B21;
  --line:#E3DFD6;
  --line-soft:#EFECE5;
  --muted:#6B7278;
  --text:#3B4448;
  --success:#2F6F4F;
  --warn:#B8871F;
  --error:#B3352B;
  --disabled:#C9C5BC;
  --radius-card:4px;
  --radius-btn:2px;
  --shadow-1:0 1px 2px rgba(20,36,43,.05);
  --shadow-2:0 12px 28px rgba(20,36,43,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --serif:"Noto Serif SC","Songti SC",PingFang SC,HarmonyOS Sans,"Microsoft YaHei",system-ui,serif;
  --sans:"Noto Sans SC",PingFang SC,HarmonyOS Sans,"Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,54px);line-height:1.2}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:clamp(18px,1.6vw,22px);line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.num{font-variant-numeric:tabular-nums}
/* ============ 容器与栅格 ============ */
.container{max-width:1240px;margin:0 auto;padding:0 40px;width:100%}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper{background:var(--paper)}
.section--white{background:#fff}
.section--lined{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap}
.sec-head .sec-kicker{font-size:13px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;margin-bottom:10px}
.sec-head .sec-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:62ch;line-height:1.8}
.sec-link{font-size:14px;color:var(--stone);border-bottom:1px solid transparent;padding-bottom:2px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.sec-link:hover{color:var(--copper);border-bottom-color:var(--copper)}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;letter-spacing:.02em;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--copper);color:var(--copper);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink);color:#A9B7BC;font-size:13px;letter-spacing:.05em}
.topbar-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar-left{display:flex;align-items:center;gap:10px}
.topbar-dot{width:5px;height:5px;background:var(--copper);border-radius:50%;flex:none}
.topbar-right{display:flex;align-items:center;gap:20px}
.topbar-right a{color:#D5DEE1;border-bottom:1px solid rgba(255,255,255,.22);padding-bottom:1px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.topbar-right a:hover{color:#fff;border-bottom-color:var(--copper)}
/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--line),var(--shadow-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:baseline;gap:5px;font-family:var(--serif);font-weight:700;font-size:21px;letter-spacing:.06em;color:var(--ink);flex:none}
.logo-sub{font-family:var(--sans);font-weight:300;font-size:13px;letter-spacing:.06em;color:var(--stone)}
.logo:hover .logo-sub{color:var(--copper)}
.logo:hover .logo-sub{transition:color var(--dur) var(--ease)}
.chips{display:flex;align-items:center;gap:4px;position:relative}
.chip{
  position:relative;padding:12px 16px;font-size:15px;color:var(--text);white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.chip::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:center;transition:transform var(--dur) var(--ease);
}
.chip:hover{color:var(--ink)}
.chip:hover::after{transform:scaleX(.45)}
.chip.is-active{color:var(--ink);font-weight:500}
.chip.is-active::after{transform:scaleX(1)}
.header-cta{display:flex;align-items:center;gap:12px;flex:none}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:2px;color:var(--ink)}
.menu-toggle:hover{border-color:var(--copper);color:var(--copper)}
/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(16,27,33,.45);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;left:0;right:0;bottom:0;background:#fff;border-radius:6px 6px 0 0;
  padding:24px 20px 32px;transform:translateY(16px);transition:transform var(--dur) var(--ease);
  max-height:86vh;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:8px}
.drawer-nav a{display:block;font-size:18px;line-height:1.6;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line-soft)}
.drawer-nav a:hover{color:var(--copper)}
.drawer-nav a.is-active{color:var(--copper)}
.drawer-cta{margin-top:24px}
/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 60px;background:linear-gradient(180deg,#FBF9F6 0%,var(--paper) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;
  color:var(--stone);border:1px solid var(--line);border-radius:2px;padding:5px 12px;background:#fff;margin-bottom:22px;
}
.hero-tag i{width:5px;height:5px;background:var(--copper);border-radius:50%;display:block}
.hero-title{margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--muted);max-width:30ch;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-metrics{display:flex;gap:44px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line);flex-wrap:wrap}
.metric{display:flex;flex-direction:column;gap:2px}
.metric-num{font-family:var(--serif);font-size:26px;font-weight:700;color:var(--copper);font-variant-numeric:tabular-nums;line-height:1.2}
.metric-label{font-size:13px;color:var(--muted);letter-spacing:.05em}
.hero-media{position:relative}
.hero-media img{width:100%;height:440px;object-fit:cover;border-radius:2px;filter:saturate(.92) contrast(1.02)}
.hero-media::before{
  content:"";position:absolute;right:-14px;bottom:-14px;width:132px;height:132px;
  border-right:1px solid var(--copper);border-bottom:1px solid var(--copper);
}
.hero-media::after{
  content:"";position:absolute;left:-14px;top:-14px;width:72px;height:72px;
  border-left:1px solid rgba(78,107,117,.5);border-top:1px solid rgba(78,107,117,.5);
}
/* ============ 关键信息横条 ============ */
.keybar{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.keybar-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.key-item{display:flex;gap:16px;padding:30px 26px;border-left:1px solid var(--line);transition:background var(--dur) var(--ease)}
.key-item:first-child{border-left:none}
.key-item:hover{background:#FBFAF7}
.key-icon{
  flex:none;width:42px;height:42px;border:1px solid var(--line);border-radius:2px;
  display:flex;align-items:center;justify-content:center;color:var(--stone);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.key-item:hover .key-icon{border-color:var(--copper);color:var(--copper)}
.key-icon svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.key-title{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:4px;letter-spacing:.02em}
.key-text{font-size:13.5px;color:var(--muted);line-height:1.7}
/* ============ 权益对比表 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;-webkit-overflow-scrolling:touch}
table.benefit{width:100%;border-collapse:collapse;min-width:900px}
table.benefit thead th{
  background:var(--ink);color:#fff;font-weight:500;font-size:14px;letter-spacing:.06em;
  padding:16px 12px;text-align:center;position:sticky;top:0;z-index:2;
}
table.benefit thead th:first-child{text-align:left;padding-left:26px}
table.benefit tbody td{
  height:56px;padding:0 12px;text-align:center;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line-soft);
}
table.benefit tbody tr:nth-child(odd){background:#FBFAF7}
table.benefit tbody tr{transition:background var(--dur) var(--ease)}
table.benefit tbody tr:hover{background:rgba(20,36,43,.06)}
table.benefit tbody tr:last-child td{border-bottom:none}
table.benefit tbody td:first-child{text-align:left;padding-left:26px;color:var(--ink);font-weight:500;font-size:15px;white-space:nowrap}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--copper)}
.dash{display:inline-block;width:16px;height:1px;background:var(--disabled);vertical-align:middle}
.cell-link{font-size:13px;color:var(--stone);border-bottom:1px solid transparent;letter-spacing:.05em;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.cell-link:hover{color:var(--copper);border-bottom-color:var(--copper)}
.table-note{margin-top:16px;font-size:13px;color:var(--muted);letter-spacing:.02em}
/* ============ 等级亮点时间轴 ============ */
.levels{position:relative;max-width:820px}
.levels::before{content:"";position:absolute;left:4px;top:10px;bottom:26px;width:1px;background:var(--line)}
.level-item{position:relative;padding:0 0 44px 40px}
.level-item:last-child{padding-bottom:0}
.level-item::before{
  content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:50%;
  background:#fff;border:1px solid var(--stone);z-index:1;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.level-item.is-current::before{background:var(--copper);border-color:var(--copper)}
.level-item:hover::before{background:var(--copper);border-color:var(--copper)}
.level-top{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.level-name{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.level-badge{font-size:12px;letter-spacing:.08em;color:var(--copper);border:1px solid rgba(184,92,56,.4);border-radius:2px;padding:2px 8px}
.level-say{font-size:15px;color:var(--muted);margin-bottom:14px;max-width:48ch}
.level-points{display:flex;flex-direction:column;gap:8px}
.level-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text);line-height:1.75}
.level-points li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:1px;background:var(--copper)}
/* ============ 最新信息（CMS 列表） ============ */
.news-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:stretch}
.news-lead{
  display:grid;grid-template-columns:5fr 4fr;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);position:relative;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.news-lead::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);z-index:3;
}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DBD5C9}
.news-lead:hover::before{transform:scaleX(1)}
.news-lead-media{overflow:hidden;min-height:240px}
.news-lead-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.94);transition:transform 620ms var(--ease)}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:30px 28px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.news-lead-body h3{font-size:21px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease)}
.news-lead:hover .news-lead-body h3{color:var(--copper)}
.news-lead-body p{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.chip-tag{
  align-self:flex-start;font-size:13px;letter-spacing:.05em;color:var(--stone);
  border:1px solid rgba(78,107,117,.36);border-radius:2px;padding:2px 9px;line-height:1.5;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);letter-spacing:.02em;margin-top:4px}
.news-meta time{font-variant-numeric:tabular-nums}
.read-more{color:var(--stone);transition:color var(--dur) var(--ease)}
.news-lead:hover .read-more,.news-card:hover .read-more{color:var(--copper)}
.news-side{display:grid;gap:16px;align-content:start}
.news-card{
  display:grid;grid-template-columns:128px 1fr;gap:16px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:12px;
  box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.news-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DBD5C9}
.news-card:hover::before{transform:scaleX(1)}
.news-thumb{overflow:hidden;border-radius:2px;background:rgba(20,36,43,.08)}
.news-thumb img{width:100%;height:100%;min-height:88px;object-fit:cover;filter:saturate(.94);transition:transform 620ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-card-body{display:flex;flex-direction:column;gap:8px;justify-content:center;min-width:0}
.news-card-body h3{font-size:16px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease)}
.news-card:hover .news-card-body h3{color:var(--copper)}
.news-card-body p{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;padding:40px 24px;text-align:center;
}
.empty-ring{width:52px;height:52px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--stone)}
.empty-ring svg{width:24px;height:24px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round}
.empty-title{font-size:16px;color:var(--ink);font-family:var(--serif)}
.empty-text{font-size:14px;color:var(--muted)}
/* ============ FAQ ============ */
.faq{max-width:760px;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:22px 0;font-size:17px;font-weight:600;color:var(--ink);text-align:left;
  font-family:var(--sans);transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--copper)}
.faq-icon{position:relative;flex:none;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--stone);transition:transform var(--dur) var(--ease),background var(--dur) var(--ease)}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px}
.faq-icon::after{left:7.5px;top:0;width:1px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--copper)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--dur) var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  padding:0 0 22px 18px;font-size:15px;line-height:1.85;color:var(--muted);
  border-left:2px solid transparent;transition:border-color var(--dur) var(--ease);
}
.faq-item.is-open .faq-a-inner p{border-left-color:var(--copper)}
/* ============ CTA 大区块 ============ */
.cta-band{
  background:var(--ink);color:#D7DEE0;padding:84px 0;
  border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;max-width:1080px;margin:0 auto;align-items:start}
.cta-band h2{color:#fff;margin-bottom:18px}
.cta-band .cta-lead{font-size:15px;color:#9FAEB3;line-height:1.85;max-width:40ch}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{position:relative;padding-left:20px;font-size:14.5px;color:#C3CED1}
.cta-points li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:1px;background:var(--copper)}
.form-card{background:#fff;border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-2)}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--muted);letter-spacing:.05em;margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid #D8D4CB;border-radius:2px;
  background:#fff;font-size:15px;color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field input::placeholder{color:#A9ADB1}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--copper);box-shadow:0 0 0 2px rgba(184,92,56,.14);
}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%236B7278' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.field-error{display:none;font-size:13px;color:var(--error);margin-top:12px}
.field.is-error input,.field.is-error select{border-color:var(--error)}
.field.is-error .field-error{display:block}
.form-note{font-size:13px;color:var(--muted);margin-top:16px;line-height:1.7}
.btn-loading{pointer-events:none}
.btn-loading .dots{display:inline-flex;gap:4px}
.btn-loading .dots i{width:4px;height:4px;border-radius:50%;background:currentColor;animation:pulse 1s infinite ease-in-out}
.btn-loading .dots i:nth-child(2){animation-delay:.15s}
.btn-loading .dots i:nth-child(3){animation-delay:.3s}
@keyframes pulse{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}
/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#8E9BA0;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:52px}
.footer-brand .logo{color:#fff;margin-bottom:16px;display:inline-flex}
.footer-brand .logo-sub{color:#7F8D92}
.footer-brand p{font-size:13.5px;line-height:1.9;color:#7F8D92;max-width:32ch}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:#D5DEE1;font-weight:500;font-family:var(--sans);margin-bottom:18px}
.footer-col li{line-height:1.9}
.footer-col a{font-size:14px;color:#8E9BA0;transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-col .plain{font-size:14px;color:#8E9BA0;line-height:1.9}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:12px 0;font-size:13px;color:#6F7C81;
}
.footer-bottom .to-top{display:inline-flex;align-items:center;gap:6px;color:#A9B7BC;font-size:13px;transition:color var(--dur) var(--ease)}
.footer-bottom .to-top:hover{color:var(--copper)}
.to-top svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 560ms var(--ease),transform 560ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{height:340px}
  .hero-media::before{right:-10px;bottom:-10px;width:96px;height:96px}
  .keybar-grid{grid-template-columns:repeat(2,1fr)}
  .key-item:nth-child(3){border-left:none}
  .key-item:nth-child(n+3){border-top:1px solid var(--line)}
  .news-grid{grid-template-columns:1fr}
  .news-lead{grid-template-columns:5fr 4fr}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .levels::before{bottom:20px}
}
@media (max-width:900px){
  .chips{
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
    -webkit-overflow-scrolling:touch;
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
    mask-image:linear-gradient(to right,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
    padding:0 6px;
  }
  .chips::-webkit-scrollbar{display:none}
  .header-inner{gap:14px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .topbar{display:none}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:58px}
  .chips{display:none}
  .menu-toggle{display:flex}
  .header-cta .btn-primary{height:40px;padding:0 16px;font-size:14px}
  .logo{font-size:19px}
  .logo-sub{font-size:12px}
  .hero{padding:40px 0 40px}
  .hero-title{margin-bottom:14px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px;margin-top:26px}
  .hero-actions .btn{flex:1;min-width:44px}
  .hero-metrics{gap:26px;margin-top:32px;padding-top:22px}
  .metric-num{font-size:22px}
  .hero-media img{height:250px}
  .hero-media::after{display:none}
  .keybar-grid{grid-template-columns:1fr}
  .key-item{border-left:none;border-top:1px solid var(--line);padding:22px 20px}
  .key-item:first-child{border-top:none}
  .sec-head{margin-bottom:28px}
  .news-lead{grid-template-columns:1fr}
  .news-lead-media{min-height:190px;max-height:210px}
  .news-lead-body{padding:22px 20px}
  .news-card{grid-template-columns:104px 1fr;gap:12px;padding:10px}
  .news-thumb img{min-height:76px}
  .cta-band{padding:56px 0}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{justify-content:flex-start}
  .levels::before{left:3px}
  .level-item{padding-left:30px;padding-bottom:34px}
  .level-name{font-size:19px}
}
@media (max-width:480px){
  body{font-size:15px}
  h1{font-size:30px}
  .hero-media img{height:210px}
  .hero-media::before{width:72px;height:72px}
  .hero-metrics{gap:20px}
  .metric-num{font-size:20px}
  .btn{padding:0 18px}
  .sec-head .sec-desc{font-size:14px}
  .news-card{grid-template-columns:88px 1fr}
  .news-card-body h3{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .news-lead:hover,.news-card:hover,.btn:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink:#14242B;
  --ink-soft:#1D333C;
  --copper:#B85C38;
  --stone:#4E6B75;
  --paper:#F7F5F1;
  --paper-deep:#F1EDE5;
  --white:#FFFFFF;
  --dark:#101B21;
  --line:#E3DFD6;
  --line-2:#D8D4CB;
  --muted:#6B7278;
  --text:#3B4448;
  --ok:#2F6F4F;
  --warn:#B8871F;
  --err:#B3352B;
  --off:#C9C5BC;
  --r-card:4px;
  --r-btn:2px;
  --r-img:2px;
  --sh-1:0 1px 2px rgba(20,36,43,.05);
  --sh-2:0 12px 28px rgba(20,36,43,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:240ms;
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono: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(--text);
  font-family:var(--sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none;transition:color var(--t) var(--ease),border-color var(--t) var(--ease)}
a:hover{color:var(--copper)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding-left:1.2em}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
::selection{background:rgba(184,92,56,.18)}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums;color:var(--copper);font-family:var(--serif);font-weight:700}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;height:34px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar-note{letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-actions a{color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:1px}
.topbar-actions a:hover{color:var(--copper);border-color:var(--copper)}
.topbar-divider{width:1px;height:12px;background:rgba(255,255,255,.22)}
.plain{color:rgba(255,255,255,.6)}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--paper);
  border-bottom:1px solid transparent;
  transition:height var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.96);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height var(--t) var(--ease)}
.site-header.is-stuck .header-inner{height:60px}
.logo{
  font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:.06em;
  color:var(--ink);display:inline-flex;align-items:baseline;gap:7px;white-space:nowrap;
}
.logo:hover{color:var(--ink)}
.logo-sub{font-family:var(--sans);font-size:12.5px;font-weight:400;letter-spacing:.16em;color:var(--muted)}
.chips{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.chip{
  position:relative;font-size:15px;color:var(--muted);padding:8px 14px 10px;
  border-bottom:2px solid transparent;line-height:1.5;white-space:nowrap;
}
.chip:hover{color:var(--ink);border-bottom-color:rgba(184,92,56,.35)}
.chip.is-active{color:var(--ink);font-weight:500;border-bottom-color:var(--copper)}
.header-cta{flex-shrink:0;display:flex;align-items:center;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;line-height:1;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),
             border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--copper);color:var(--copper);transform:translateY(-1px)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}

/* ---------- 主体 ---------- */
.site-main{padding:28px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb .sep{color:var(--off)}
.breadcrumb .current{color:var(--ink)}

.article-head{max-width:760px;margin:34px auto 0;text-align:left}
.kicker{
  display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--stone);
  border-bottom:2px solid var(--copper);padding-bottom:6px;
}
.article-head h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.25;margin:20px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--muted);padding-bottom:26px;border-bottom:1px solid var(--line)}
.tag{
  display:inline-block;font-size:13px;letter-spacing:.05em;color:var(--stone);
  border:1px solid rgba(78,107,117,.35);border-radius:2px;padding:2px 10px;line-height:1.5;
}
.article-meta .dot{width:3px;height:3px;background:var(--off);border-radius:50%}

/* ---------- 正文排版 ---------- */
.prose{max-width:760px;margin:38px auto 0;font-size:16.5px;line-height:1.9;color:var(--text)}
.prose p{margin:0 0 1.4em}
.prose h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;margin:52px 0 18px;
}
.prose h2::before{content:"";display:block;width:36px;height:2px;background:var(--copper);margin-bottom:16px}
.prose h3{font-size:20px;line-height:1.4;margin:34px 0 12px;color:var(--ink)}
.prose h4{font-size:17px;margin:26px 0 10px;color:var(--ink)}
.prose ul,.prose ol{margin:0 0 1.4em;padding-left:1.3em}
.prose li{margin:.4em 0}
.prose blockquote{
  margin:0 0 1.6em;padding:16px 22px;background:var(--paper-deep);
  border-left:3px solid var(--copper);color:var(--stone);border-radius:0 2px 2px 0;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{margin:26px auto;border-radius:var(--r-img)}
.prose figcaption,.prose .caption{font-size:13px;color:var(--muted);text-align:center;margin:-4px 0 1.6em}
.prose table{width:100%;border-collapse:collapse;font-size:14.5px;margin:0 0 1.6em;border:1px solid var(--line)}
.prose th{background:var(--stone);color:#fff;font-weight:500;text-align:left;padding:12px 14px;white-space:nowrap}
.prose td{border-bottom:1px solid var(--line);padding:12px 14px;vertical-align:top}
.prose tbody tr:nth-child(even) td{background:#FBFAF7}
.prose code{background:#EFEBE3;padding:2px 6px;border-radius:2px;font-size:14px;font-family:var(--mono);color:var(--ink)}
.prose pre{background:var(--dark);color:#E8E4DC;padding:18px 20px;border-radius:2px;overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 1.6em}
.prose pre code{background:none;color:inherit;padding:0}
.prose a{color:var(--ink);border-bottom:1px solid rgba(184,92,56,.45)}
.prose a:hover{color:var(--copper);border-color:var(--copper)}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:48px 24px;margin:8px 0 0;
}
.empty-state svg{width:46px;height:46px;stroke:var(--off);fill:none;stroke-width:1.4}
.empty-state strong{font-family:var(--serif);font-size:19px;color:var(--ink)}
.empty-state p{margin:0;color:var(--muted);font-size:14.5px;max-width:420px}

/* ---------- 板块 ---------- */
.section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.section-head .section-sub{margin:10px 0 0;color:var(--muted);font-size:14.5px;max-width:640px}
.more-link{font-size:14.5px;color:var(--stone);white-space:nowrap;border-bottom:1px solid rgba(78,107,117,.4);padding-bottom:2px}
.more-link:hover{color:var(--copper);border-color:var(--copper)}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease);z-index:2;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.card:hover::before{transform:scaleX(1)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:rgba(20,36,43,.08)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 600ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;line-height:1.45;font-family:var(--serif)}
.card:hover .card-body h3{color:var(--copper)}
.card-body p{margin:0;font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.card-foot .read{color:var(--stone);display:inline-flex;align-items:center;gap:6px}
.card:hover .card-foot .read{color:var(--copper)}
.card-foot svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.6}

/* ---------- 快捷入口列表 ---------- */
.entry-list{border-top:1px solid var(--line)}
.entry{
  display:flex;align-items:center;gap:20px;padding:22px 4px;border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease),padding-left var(--t) var(--ease);
}
.entry:hover{background:#fff;padding-left:14px}
.entry .idx{font-family:var(--serif);font-size:14px;color:var(--copper);letter-spacing:.08em;min-width:34px}
.entry .entry-main{flex:1}
.entry .entry-title{font-family:var(--serif);font-size:18px;color:var(--ink);margin-bottom:4px}
.entry:hover .entry-title{color:var(--copper)}
.entry .entry-desc{font-size:14px;color:var(--muted);margin:0}
.entry .arrow{width:20px;height:20px;stroke:var(--off);fill:none;stroke-width:1.6;transition:transform var(--t) var(--ease),stroke var(--t) var(--ease)}
.entry:hover .arrow{stroke:var(--copper);transform:translateX(4px)}
.back-row{margin-top:32px;display:flex;justify-content:center}

/* ---------- 上下篇 ---------- */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:56px 0 0}
.pager a{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.pager a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.pager .pager-label{font-size:13px;letter-spacing:.08em;color:var(--muted)}
.pager .pager-title{font-family:var(--serif);font-size:17px;color:var(--ink);margin-top:8px;line-height:1.5}
.pager a:hover .pager-title{color:var(--copper)}
.pager .next{text-align:right}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);margin-top:88px;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(16,27,33,.6)}
.cta-inner{
  max-width:1080px;margin:0 auto;display:grid;grid-template-columns:1.25fr .9fr;
  gap:48px;align-items:center;padding:64px 0;
}
.cta-copy h2{color:#fff;font-size:clamp(23px,2.4vw,32px);line-height:1.35}
.cta-points{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.cta-points li{position:relative;padding-left:18px;color:rgba(255,255,255,.76);font-size:14.5px}
.cta-points li::before{content:"";position:absolute;left:0;top:.72em;width:10px;height:1.5px;background:var(--copper)}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn{width:100%}
.cta-note{margin:6px 0 0;font-size:13px;color:rgba(255,255,255,.5);text-align:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.62);margin-top:0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 48px}
.footer-brand .logo{color:#fff;font-size:19px}
.footer-brand .logo-sub{color:rgba(255,255,255,.62)}
.footer-brand p{margin:16px 0 0;line-height:1.9;color:rgba(255,255,255,.58);max-width:300px}
.footer-col h4{font-family:var(--sans);font-size:14px;font-weight:500;letter-spacing:.08em;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{line-height:1.9;margin-bottom:6px}
.footer-col a{color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-col .plain{color:rgba(255,255,255,.62)}
.footer-bottom{
  height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.48);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.66)}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 40px}
  .topbar-note{font-size:12.5px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .topbar{display:none}
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0 0;gap:12px}
  .site-header.is-stuck .header-inner{height:auto}
  .logo{order:1}
  .header-cta{order:2;margin-left:auto}
  .chips{
    order:3;width:100%;justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;
    padding-bottom:2px;scrollbar-width:none;-ms-overflow-style:none;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  }
  .chips::-webkit-scrollbar{display:none}
  .section{padding:56px 0 0}
  .article-head{margin-top:24px}
  .prose{margin-top:28px;font-size:16px;line-height:1.85}
  .prose h2{margin-top:40px}
  .grid-3{grid-template-columns:1fr;gap:20px}
  .pager{grid-template-columns:1fr;gap:14px;padding-top:44px}
  .pager .next{text-align:left}
  .cta-band{margin-top:64px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 32px}
  .footer-bottom{height:auto;flex-direction:column;align-items:flex-start;gap:10px;padding:16px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:480px){
  .article-head h1{font-size:28px}
  .prose{font-size:15.5px}
  .entry{padding:18px 2px;gap:14px}
  .entry .entry-desc{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#14242B;
  --brand-deep:#101B21;
  --copper:#B85C38;
  --slate:#4E6B75;
  --paper:#F7F5F1;
  --white:#FFFFFF;
  --line:#E3DFD6;
  --muted:#6B7278;
  --text:#3B4448;
  --ok:#2F6F4F;
  --warn:#B8871F;
  --err:#B3352B;
  --off:#C9C5BC;
  --radius-card:4px;
  --radius-btn:2px;
  --radius-img:2px;
  --shadow-1:0 1px 2px rgba(20,36,43,.05);
  --shadow-2:0 12px 28px rgba(20,36,43,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:260ms;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;
}
*,*::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(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;background:rgba(20,36,43,.06)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--brand);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.container{max-width:1240px;margin:0 auto;padding:0 40px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand);color:rgba(255,255,255,.78);font-size:13px;height:34px;display:flex;align-items:center}
.topbar-inner{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.topbar-note{letter-spacing:.05em}
.topbar-links{display:flex;align-items:center;gap:20px}
.topbar-links a{color:rgba(255,255,255,.78);transition:color var(--dur) var(--ease)}
.topbar-links a:hover{color:#fff}
.topbar-cta{
  border:1px solid rgba(255,255,255,.42);
  color:#fff;
  padding:3px 12px;
  border-radius:var(--radius-btn);
  font-size:13px;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.topbar-cta:hover{background:var(--copper);border-color:var(--copper)}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  backdrop-filter:saturate(120%) blur(8px);
  transition:height var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px rgba(20,36,43,.05)}
.header-inner{
  min-height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  transition:min-height var(--dur) var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px}
.logo{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:22px;
  color:var(--brand);
  letter-spacing:.06em;
  display:inline-flex;align-items:baseline;gap:2px;
  white-space:nowrap;
}
.logo-sub{
  font-family:var(--font-sans);
  font-weight:400;
  font-size:13px;
  color:var(--copper);
  letter-spacing:.14em;
  margin-left:6px;
}
.chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 2px}
.chips::-webkit-scrollbar{display:none}
.chip{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  border-radius:0;
  transition:color var(--dur) var(--ease);
}
.chip::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--copper);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.chip:hover{color:var(--brand)}
.chip:hover::after{transform:scaleX(1)}
.chip.is-active{color:var(--brand);font-weight:500}
.chip.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--brand);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--copper);color:var(--copper)}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--copper);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--copper);color:var(--copper);transform:translateY(-1px)}
.btn-line{background:transparent;color:var(--brand);border-color:rgba(255,255,255,.4);color:#fff}
.btn-line:hover{background:var(--copper);border-color:var(--copper);transform:translateY(-1px)}
.btn-block{width:100%}
.btn:active{transform:translateY(0)}
.btn[disabled]{background:var(--off);color:#fff;cursor:not-allowed}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(16,27,33,.5);
  opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease);
}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:var(--white);border-left:1px solid var(--line);
  padding:24px 22px 32px;display:flex;flex-direction:column;gap:24px;
  transform:translateX(12px);transition:transform var(--dur) var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  font-size:18px;line-height:1.6;padding:12px 2px;color:var(--brand);
  border-bottom:1px solid var(--line);
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.drawer-nav a:hover{color:var(--copper);padding-left:6px}
.drawer-meta{font-size:14px;color:var(--muted);line-height:1.9}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--brand);
}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}

/* ---------- 小号 Hero ---------- */
.hero-sm{
  background:var(--white);
  border-bottom:1px solid var(--line);
  padding:52px 0 44px;
  position:relative;overflow:hidden;
}
.hero-sm::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:280px;
  background:linear-gradient(180deg,rgba(78,107,117,.08),rgba(78,107,117,0));
  pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);letter-spacing:.05em;margin-bottom:20px;
}
.breadcrumb a{transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb span.sep{color:var(--off)}
.hero-sm h1{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.24;
  max-width:820px;
  margin-bottom:18px;
}
.hero-lead{
  font-size:17px;line-height:1.85;color:var(--text);max-width:660px;
  padding-left:16px;border-left:2px solid var(--copper);
}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:40px;border-top:1px solid var(--line);padding-top:24px;
}
.stat{padding:0 24px;border-left:1px solid var(--line)}
.stat:first-child{padding-left:0;border-left:0}
.stat-num{
  font-family:var(--font-serif);font-size:30px;font-weight:700;color:var(--copper);
  line-height:1.2;letter-spacing:-.01em;
}
.stat-num small{font-size:14px;font-family:var(--font-sans);font-weight:500;color:var(--muted);margin-left:4px}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.05em;margin-top:6px}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
.section-more{font-size:14px;color:var(--slate);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.section-more:hover{color:var(--copper);border-color:var(--copper)}

/* ---------- 分栏布局 ---------- */
.layout-two{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}

/* ---------- 条目卡片 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.entry-card{
  position:relative;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.entry-card::after{
  content:"";position:absolute;top:0;left:0;height:2px;width:0;background:var(--copper);
  transition:width var(--dur) var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.entry-card:hover::after{width:100%}
.entry-card:hover .entry-title{color:var(--copper)}
.entry-media{overflow:hidden;background:rgba(20,36,43,.06)}
.entry-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  filter:saturate(.92);
  transition:transform 320ms var(--ease);
}
.entry-card:hover .entry-media img{transform:scale(1.03)}
.entry-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:13px;line-height:1.5;letter-spacing:.05em;color:var(--slate);
  border:1px solid rgba(78,107,117,.34);border-radius:2px;padding:2px 9px;
}
.entry-title{
  font-family:var(--font-serif);font-size:20px;line-height:1.4;font-weight:600;color:var(--brand);
  transition:color var(--dur) var(--ease);
}
.entry-desc{font-size:15px;line-height:1.8;color:var(--text)}
.entry-desc strong{color:var(--brand);font-weight:500}
.entry-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);letter-spacing:.05em;
}
.entry-more{color:var(--slate);display:inline-flex;align-items:center;gap:6px;transition:color var(--dur) var(--ease)}
.entry-more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.entry-card:hover .entry-more{color:var(--copper)}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.side-block{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-title{
  font-size:14px;letter-spacing:.08em;color:var(--brand);font-weight:500;
  font-family:var(--font-sans);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
.anchor-nav{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  font-size:14px;color:var(--muted);padding:9px 0 9px 12px;position:relative;
  border-left:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.anchor-nav a:hover{color:var(--brand);border-left-color:var(--copper);padding-left:16px}
.key-list{display:flex;flex-direction:column;gap:12px}
.key-list li{font-size:14px;line-height:1.75;color:var(--text);padding-left:20px;position:relative}
.key-list li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:1px;background:var(--copper)}
.side-cta{
  background:var(--brand);color:rgba(255,255,255,.86);border:0;
  border-radius:var(--radius-card);padding:24px 22px;
}
.side-cta .side-title{color:#fff;border-bottom-color:rgba(255,255,255,.18);font-family:var(--font-serif);font-size:17px;letter-spacing:0}
.side-cta p{font-size:14px;line-height:1.8;margin-bottom:16px}
.side-cta .btn{width:100%;background:#fff;color:var(--brand)}
.side-cta .btn:hover{background:var(--copper);color:#fff}
.side-cta .side-note{font-size:13px;color:rgba(255,255,255,.6);margin:12px 0 0}

/* ---------- FAQ ---------- */
.faq{max-width:820px;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;
  text-align:left;padding:20px 0 20px 0;font-size:17px;font-weight:600;color:var(--brand);
  font-family:var(--font-serif);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--copper)}
.faq-icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;
  transition:transform 180ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--slate);border-radius:1px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 280ms var(--ease);
}
.faq-a-inner{
  font-size:15px;line-height:1.85;color:var(--muted);
  padding:0 0 22px 14px;border-left:2px solid var(--copper);margin-left:1px;
}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- CTA 大区块 ---------- */
.cta-band{
  background:var(--brand);color:rgba(255,255,255,.86);
  border-top:1px solid rgba(255,255,255,.08);
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:80px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;max-width:1080px;margin:0 auto}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.4vw,34px);line-height:1.3;margin-bottom:18px}
.cta-copy p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.76);max-width:460px}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{font-size:14px;color:rgba(255,255,255,.76);padding-left:20px;position:relative}
.cta-points li::before{content:"";position:absolute;left:0;top:12px;width:12px;height:1px;background:var(--copper)}
.cta-form{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);padding:26px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.field label{font-size:13px;letter-spacing:.05em;color:rgba(255,255,255,.7)}
.field input,.field select{
  height:48px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.96);color:var(--brand);
  border:1px solid #D8D4CB;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--copper);box-shadow:0 0 0 2px rgba(184,92,56,.22);
}
.form-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px;line-height:1.7}
.form-status{font-size:14px;color:#E8C9B6;margin-top:12px;display:none}
.form-status.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.66);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;font-size:20px}
.footer-brand p{margin-top:16px;line-height:1.9;color:rgba(255,255,255,.6);max-width:300px}
.footer-col h4{
  font-family:var(--font-sans);font-size:14px;letter-spacing:.08em;color:rgba(255,255,255,.9);
  font-weight:500;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px}
.footer-col li{line-height:1.9}
.footer-col a,.footer-col .plain{color:rgba(255,255,255,.66);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  height:56px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.7);transition:color var(--dur) var(--ease)}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 280ms var(--ease),transform 280ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
  .layout-two{grid-template-columns:minmax(0,1fr) 290px;gap:36px}
  .cta-grid{gap:48px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .layout-two{grid-template-columns:1fr}
  .sidebar{position:static}
  .hero-stats{grid-template-columns:repeat(2,1fr);row-gap:24px}
  .stat:nth-child(3){padding-left:0;border-left:0}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-copy p{max-width:none}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .topbar{display:none}
  .header-cta-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .chips{display:none}
  .header-inner{min-height:64px}
  .site-header.is-scrolled .header-inner{min-height:60px}
  .hero-sm{padding:36px 0 32px}
  .hero-sm::before{display:none}
  .hero-lead{padding-left:12px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .entry-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px 0}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{height:auto;flex-direction:column;align-items:flex-start;gap:10px;padding:18px 0}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero-stats{grid-template-columns:1fr}
  .stat{padding:0;border-left:0;border-top:1px solid var(--line);padding-top:14px}
  .stat:first-child{border-top:0;padding-top:0}
  .entry-body{padding:16px 16px 18px}
  .logo{font-size:19px}
  .logo-sub{font-size:12px;letter-spacing:.1em}
}

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

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --ink:#14242B;
  --ink-deep:#101B21;
  --copper:#B85C38;
  --stone:#4E6B75;
  --paper:#F7F5F1;
  --white:#FFFFFF;
  --line:#E3DFD6;
  --line-soft:#EFEBE3;
  --muted:#6B7278;
  --text:#3B4448;
  --ok:#2F6F4F;
  --warn:#B8871F;
  --err:#B3352B;
  --disabled:#C9C5BC;
  --radius-card:4px;
  --radius-btn:2px;
  --radius-img:2px;
  --shadow-1:0 1px 2px rgba(20,36,43,.05);
  --shadow-2:0 12px 28px rgba(20,36,43,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --container:1240px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  color:var(--ink);
  margin:0;
  font-weight:600;
  letter-spacing:-0.01em;
}
h1{font-size:clamp(30px,4.2vw,54px);line-height:1.2;}
h2{font-size:clamp(26px,3vw,36px);line-height:1.3;}
h3{font-size:21px;line-height:1.4;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
button,input,select,textarea{font:inherit;color:inherit;margin:0;}
button{background:none;border:0;cursor:pointer;}
strong{font-weight:600;color:var(--ink);}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(184,92,56,.18);}

/* ============ 容器与通用 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:104px 0;}
.section-tight{padding:80px 0;}
.section-head{max-width:760px;margin-bottom:56px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--copper);
  margin-bottom:14px;
  text-transform:uppercase;
}
.section-head h2{margin-bottom:16px;}
.section-desc{font-size:16px;color:var(--muted);line-height:1.85;max-width:640px;}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:10px 18px;z-index:999;
}
.skip-link:focus{left:16px;top:16px;}

/* ============ 顶部信息条 ============ */
.topbar{
  height:34px;
  background:var(--ink);
  color:rgba(255,255,255,.72);
  font-size:13px;
  letter-spacing:.04em;
}
.topbar .container{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.topbar-dot{width:5px;height:5px;border-radius:50%;background:var(--copper);display:inline-block;}
.topbar-right{display:flex;align-items:center;gap:20px;white-space:nowrap;}
.topbar-right a{color:rgba(255,255,255,.78);border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:1px;}
.topbar-right a:hover{color:#fff;border-bottom-color:var(--copper);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  background:rgba(247,245,241,.96);
  border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,36,43,.05);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  font-family:var(--font-serif);
  font-size:21px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.06em;
  white-space:nowrap;
  flex:none;
  display:inline-flex;
  align-items:baseline;
}
.logo-sub{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:400;
  letter-spacing:.16em;
  color:var(--stone);
  margin-left:8px;
}
.chips{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.chips::-webkit-scrollbar{display:none;}
.chip{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.chip:hover{color:var(--ink);}
.chip.is-active{color:var(--ink);border-bottom-color:var(--copper);font-weight:500;}
.header-actions{flex:none;display:flex;align-items:center;gap:12px;}
.menu-btn{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--ink);
  background:#fff;
}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}

/* ============ 按钮 ============ */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  font-size:15px;
  letter-spacing:.04em;
  border-radius:var(--radius-btn);
  border:1px solid var(--ink);
  background:var(--ink);
  color:#fff;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn:hover{background:var(--copper);border-color:var(--copper);color:#fff;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(20,36,43,.28);}
.btn-ghost:hover{background:transparent;border-color:var(--copper);color:var(--copper);}
.btn-light{background:#fff;color:var(--ink);border-color:#fff;}
.btn-light:hover{background:var(--copper);border-color:var(--copper);color:#fff;}
.btn-block{width:100%;}
.btn-label{transition:opacity var(--dur) var(--ease);}
.btn-dots{display:none;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);gap:5px;}
.btn-dots i{width:5px;height:5px;border-radius:50%;background:currentColor;animation:pulse 1s infinite var(--ease);}
.btn-dots i:nth-child(2){animation-delay:.15s;}
.btn-dots i:nth-child(3){animation-delay:.3s;}
@keyframes pulse{0%,100%{opacity:.25;transform:translateY(0);}50%{opacity:1;transform:translateY(-2px);}}
.btn.is-loading .btn-label{opacity:0;}
.btn.is-loading .btn-dots{display:flex;}
.btn.is-loading{cursor:progress;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;color:var(--ink);font-weight:500;
  border-bottom:1px solid rgba(20,36,43,.24);
  padding-bottom:2px;
}
.link-arrow:hover{color:var(--copper);border-bottom-color:var(--copper);}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 页面 Hero（B 版：通栏底图） ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-deep);
  color:#fff;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,27,33,.72),rgba(16,27,33,.74));
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:88px 40px 76px;
}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.66);
  margin-bottom:28px;
}
.breadcrumb a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.22);padding-bottom:1px;}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--copper);}
.breadcrumb .sep{color:rgba(255,255,255,.36);}
.breadcrumb .current{color:rgba(255,255,255,.9);}
.page-hero h1{
  color:#fff;
  max-width:900px;
  margin-bottom:20px;
}
.hero-lede{
  font-size:18px;
  color:rgba(255,255,255,.82);
  max-width:620px;
  margin-bottom:48px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:56px;
  padding-top:36px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts li{display:flex;flex-direction:column;gap:4px;}
.fact-num{
  font-family:var(--font-serif);
  font-size:32px;
  line-height:1.1;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.fact-num em{font-style:normal;font-size:18px;color:var(--copper);margin-left:2px;}
.fact-label{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.66);}

/* ============ 标签 ============ */
.tag{
  display:inline-block;
  padding:3px 10px;
  font-size:13px;
  letter-spacing:.05em;
  color:var(--stone);
  border:1px solid rgba(78,107,117,.36);
  border-radius:0;
  line-height:1.5;
}

/* ============ 板块大图卡组（图文交替） ============ */
.sector-list{display:flex;flex-direction:column;gap:96px;}
.sector-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.sector-row.is-reverse .sector-media{order:2;}
.sector-media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);
  background:rgba(20,36,43,.08);
}
.sector-media::after{
  content:"";
  position:absolute;
  right:14px;bottom:14px;
  width:44px;height:44px;
  border-right:1px solid rgba(184,92,56,.9);
  border-bottom:1px solid rgba(184,92,56,.9);
  pointer-events:none;
}
.sector-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  filter:saturate(.92);
  border-radius:var(--radius-img);
  transition:transform 600ms var(--ease);
}
.sector-row:hover .sector-media img{transform:scale(1.03);}
.sector-index{
  display:block;
  font-family:var(--font-serif);
  font-size:40px;
  line-height:1;
  color:var(--copper);
  letter-spacing:.04em;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.sector-body h3{margin:16px 0 14px;}
.sector-body > p{color:var(--muted);margin-bottom:20px;max-width:520px;}
.dot-list{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;}
.dot-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--text);
  line-height:1.75;
}
.dot-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:12px;height:1px;
  background:var(--copper);
}

/* ============ 时间线 ============ */
.flow{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.timeline{
  position:relative;
  padding-left:44px;
  max-width:820px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;top:10px;bottom:10px;
  width:1px;
  background:var(--line);
}
.tl-item{position:relative;padding-bottom:40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;
  left:-44px;top:6px;
  width:15px;height:15px;
  border-radius:50%;
  border:1px solid var(--copper);
  background:#fff;
}
.tl-item.is-current .tl-node{background:var(--copper);border-color:var(--copper);}
.tl-step{
  display:inline-block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--copper);
  margin-bottom:6px;
  font-variant-numeric:tabular-nums;
}
.tl-body h3{font-size:20px;margin-bottom:8px;}
.tl-body p{color:var(--muted);font-size:15px;max-width:640px;}

/* ============ 指标横条 ============ */
.metrics{
  background:var(--ink);
  color:rgba(255,255,255,.76);
  padding:56px 0;
}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric{
  padding:8px 28px;
  border-left:1px solid rgba(255,255,255,.14);
}
.metric:first-child{border-left:0;padding-left:0;}
.metric-num{
  font-family:var(--font-serif);
  font-size:36px;
  line-height:1.1;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  display:block;
  margin-bottom:6px;
}
.metric-num em{font-style:normal;font-size:18px;color:var(--copper);margin-left:3px;}
.metric-label{font-size:14px;line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:760px;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:22px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  font-family:var(--font-sans);
  line-height:1.6;
}
.faq-q:hover{color:var(--copper);}
.faq-icon{
  flex:none;
  position:relative;
  width:16px;height:16px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--copper);
  transition:transform 180ms var(--ease),opacity 180ms var(--ease);
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px;}
.faq-icon::after{left:7.5px;top:0;width:1px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 280ms var(--ease);
}
.faq-a-inner{
  padding:0 0 24px 16px;
  border-left:2px solid var(--copper);
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
  margin-left:0;
}
.faq-a-inner p{padding-left:0;}

/* ============ CTA 大区块 ============ */
.cta-block{
  background:var(--ink);
  color:#fff;
  border-top:1px solid rgba(255,255,255,.08);
  border-bottom:1px solid rgba(16,27,33,.4);
  padding:88px 0;
}
.cta-inner{
  max-width:1080px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:72px;
  align-items:start;
}
.cta-copy h2{color:#fff;margin-bottom:18px;}
.cta-copy p{color:rgba(255,255,255,.74);margin-bottom:26px;max-width:440px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:rgba(255,255,255,.8);
}
.cta-points li::before{
  content:"";
  position:absolute;left:0;top:12px;
  width:10px;height:1px;background:var(--copper);
}
.cta-form{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);
  padding:32px;
}
.field{margin-bottom:20px;}
.field:last-of-type{margin-bottom:24px;}
.field label{
  display:block;
  font-size:13px;
  letter-spacing:.05em;
  color:rgba(255,255,255,.68);
  margin-bottom:8px;
}
.field input,
.field select{
  width:100%;
  height:48px;
  padding:0 14px;
  background:#fff;
  border:1px solid #D8D4CB;
  border-radius:var(--radius-btn);
  font-size:15px;
  color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field input::placeholder{color:#A9AEB3;}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--copper);
  box-shadow:0 0 0 2px rgba(184,92,56,.16);
}
.field.has-error input,
.field.has-error select{border-color:var(--err);}
.field-err{
  min-height:0;
  margin-top:8px;
  font-size:13px;
  color:#E58A80;
  line-height:1.6;
}
.field.has-error .field-err{margin-top:8px;}
.form-note{
  margin-top:16px;
  font-size:13px;
  color:rgba(255,255,255,.52);
  line-height:1.7;
}
.form-note.is-ok{color:#8FC5A6;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand .logo{
  color:#fff;
  display:inline-block;
  margin-bottom:16px;
  font-size:20px;
}
.footer-brand .logo-sub{color:rgba(255,255,255,.6);}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:280px;}
.footer-col h4{
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:4px;}
.footer-col ul a,
.footer-col .plain{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.7);
}
.footer-col ul a:hover{color:#fff;border-bottom:1px solid var(--copper);}
.footer-bottom{
  margin-top:56px;
  height:56px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(255,255,255,.72);
  font-size:13px;
}
.to-top:hover{color:#fff;}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:var(--ink);
  color:#fff;
  transform:translateY(-100%);
  transition:transform 280ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:20px 24px 32px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;}
.drawer .logo{color:#fff;}
.drawer .logo-sub{color:rgba(255,255,255,.64);}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--radius-btn);
  color:#fff;
}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:18px;
  line-height:1.6;
  padding:16px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.86);
}
.drawer-nav a.is-active{color:#fff;}
.drawer-nav a.is-active::after{
  content:"";
  display:block;
  width:28px;height:2px;
  background:var(--copper);
  margin-top:8px;
}
.drawer-cta{margin-top:28px;}

/* ============ 入场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 600ms var(--ease),transform 600ms var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  .container{padding:0 28px;}
  .section{padding:76px 0;}
  .section-tight{padding:64px 0;}
  .chips{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-facts{gap:36px;}
  .sector-row{grid-template-columns:1fr;gap:32px;}
  .sector-row.is-reverse .sector-media{order:0;}
  .sector-list{gap:72px;}
  .sector-body > p{max-width:none;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .metric:nth-child(3){border-left:0;padding-left:0;}
  .cta-inner{grid-template-columns:1fr;gap:48px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .topbar{display:none;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:36px;}
  .site-header{height:64px;}
  .page-hero-inner{padding:56px 18px 48px;}
  .page-hero h1{font-size:30px;}
  .hero-lede{font-size:16px;margin-bottom:32px;}
  .hero-facts{gap:24px 32px;padding-top:28px;}
  .fact-num{font-size:26px;}
  .timeline{padding-left:32px;}
  .tl-node{left:-32px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .cta-block{padding:64px 0;}
  .cta-form{padding:24px;}
  .metrics{padding:44px 0;}
  .metric-num{font-size:28px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{height:auto;padding:20px 0;flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:480px){
  .header-actions .btn{display:none;}
  .hero-facts{gap:20px 28px;}
  .metric{padding:8px 18px;}
  .sector-index{font-size:32px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}