/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --ink:#143A3C;
  --ink-deep:#0E2A2C;
  --ink-light:#1F5254;
  --copper:#BE7B32;
  --copper-light:#E3B478;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --alt:#F1EEE7;
  --line:#E3DED3;
  --line-weak:#EDE9E0;
  --text:#22292B;
  --text-2:#6B7477;
  --text-3:#92999B;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4453C;

  --r-card:6px;
  --r-btn:4px;
  --r-img:6px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(20,58,60,.06);
  --sh-2:0 12px 32px -18px rgba(20,58,60,.22);

  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pad:clamp(72px,8vw,128px);
  --container:1240px;
}

/* ============ reset / base ============ */
*,*::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(--font-body);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-title);color:var(--ink);margin:0;font-weight:700;}
h1{font-size:clamp(2.2rem,5.4vw,4.2rem);line-height:1.12;letter-spacing:-.02em;}
h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.01em;}
h3{font-size:1.25rem;line-height:1.4;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(190,123,50,.22);}

/* ============ 容器 / 版块 ============ */
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-pad) 0;}
.section--alt{background:var(--alt);}
.section--tight{padding:calc(var(--sec-pad) * .72) 0;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.2em;color:var(--copper);
  text-transform:uppercase;font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--copper);display:inline-block;}

.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{margin-top:14px;}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:16px;}
.sec-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}

.textlink{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-size:14.5px;
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.textlink:hover{color:var(--copper);border-bottom:2px solid var(--copper);}
.textlink .arrow{transition:transform 180ms var(--ease);}
.textlink:hover .arrow{transform:translateX(3px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),
             transform 180ms var(--ease),border-color 180ms var(--ease),opacity 180ms var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--copper);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:rgba(20,58,60,.08);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;font-size:12px;line-height:1.5;
  border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--text-2);background:transparent;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.badge:hover{border-color:var(--copper);color:var(--copper);}
.badge--copper{border-color:var(--copper);color:var(--copper);}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 200ms var(--ease),border-color 200ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%);
}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo svg{width:20px;height:20px;stroke:var(--copper);}
.logo-text{
  font-family:var(--font-title);font-weight:700;font-size:19px;
  color:var(--ink);letter-spacing:.01em;
}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:14px;}
.nav-menu > li{position:relative;}
.nav-link{
  display:inline-block;position:relative;
  padding:10px 12px;font-size:15px;color:var(--ink);border-radius:var(--r-btn);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;
  height:2px;background:var(--copper);transform:scaleX(0);transform-origin:left;
  transition:transform 200ms var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}

/* Mega */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 12px;font-size:15px;background:none;border:0;cursor:pointer;color:var(--ink);
  border-radius:var(--r-btn);
}
.mega-trigger svg{width:14px;height:14px;stroke:var(--copper);transition:transform 200ms var(--ease);}
.mega-wrap.is-open .mega-trigger svg{transform:rotate(180deg);}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:680px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:26px;display:grid;grid-template-columns:1.15fr 1fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms;
}
.mega-wrap.is-open .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{
  font-size:12px;letter-spacing:.2em;color:var(--text-3);
  margin-bottom:14px;font-weight:600;
}
.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:6px 18px;}
.mega-links a{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);padding:6px 0;
  transition:color 160ms var(--ease),transform 160ms var(--ease);
}
.mega-links a:hover{color:var(--copper);transform:translateX(3px);}
.mega-links a span.dot{width:4px;height:4px;border-radius:50%;background:var(--copper);flex:0 0 auto;}
.mega-cards{display:grid;gap:14px;}
.mega-card{
  display:grid;grid-template-columns:72px 1fr;gap:12px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-card);padding:10px;
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.mega-card:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--sh-2);}
.mega-card img{width:72px;height:54px;}
.mega-card strong{display:block;font-size:14px;font-family:var(--font-title);color:var(--ink);line-height:1.4;}
.mega-card em{font-style:normal;font-size:12.5px;color:var(--text-3);}

/* 抽屉 */
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:none;border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer{
  position:fixed;inset:72px 0 0 0;background:var(--paper);z-index:80;
  padding:24px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-group{border-bottom:1px solid var(--line);}
.drawer-group > button,
.drawer-group > a{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 0;background:none;border:0;text-align:left;font-size:16px;color:var(--ink);cursor:pointer;
}
.drawer-sub{display:grid;gap:2px;padding:0 0 14px;}
.drawer-sub a{font-size:14.5px;color:var(--text-2);padding:8px 0 8px 14px;border-left:1px solid var(--line);}
.drawer-sub a:hover{color:var(--copper);border-left-color:var(--copper);}

/* ============ Hero ============ */
.hero{
  position:relative;padding:calc(72px + clamp(56px,7vw,96px)) 0 clamp(56px,7vw,96px);
  background:
    linear-gradient(rgba(20,58,60,.06),rgba(20,58,60,.06)),
    linear-gradient(#F6F4EF,#F6F4EF),
    repeating-linear-gradient(0deg,var(--line-weak) 0 1px,transparent 1px 56px),
    repeating-linear-gradient(90deg,var(--line-weak) 0 1px,transparent 1px 56px);
  background-blend-mode:normal;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{margin-top:20px;}
.hero-sub{
  margin-top:20px;font-size:clamp(1.05rem,1.6vw,1.35rem);
  color:var(--ink-light);font-family:var(--font-title);line-height:1.6;
}
.hero-desc{margin-top:18px;color:var(--text-2);max-width:560px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-points{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  margin-top:40px;border-top:1px solid var(--line);
}
.hero-points li{
  padding:18px 18px 0 0;border-right:1px solid var(--line);
}
.hero-points li:last-child{border-right:0;}
.hero-points strong{display:block;font-size:14.5px;color:var(--ink);font-family:var(--font-title);}
.hero-points span{display:block;font-size:13.5px;color:var(--text-3);margin-top:6px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;border-radius:var(--r-img);
  border:1px solid var(--line);
}
.hero-statbar{
  position:absolute;left:24px;bottom:-26px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 22px;display:flex;align-items:baseline;gap:12px;box-shadow:var(--sh-1);
}
.hero-statbar b{
  font-family:var(--font-title);font-size:1.9rem;color:var(--copper);line-height:1;
}
.hero-statbar span{font-size:13px;color:var(--text-3);max-width:150px;line-height:1.5;}

/* ============ 服务 / 能力 ============ */
.cap-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;}
.cap-side{position:sticky;top:104px;align-self:start;}
.cap-side p{margin-top:16px;color:var(--text-2);}
.cap-list{border-top:1px solid var(--line);}
.cap-item{
  position:relative;border-bottom:1px solid var(--line);
  padding:26px 0 26px 22px;
  transition:background-color 200ms var(--ease);
}
.cap-item::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;
  background:var(--copper);opacity:0;transition:opacity 200ms var(--ease);
}
.cap-item:hover::before{opacity:1;}
.cap-item:hover h3{transform:translateX(6px);}
.cap-head{display:flex;align-items:baseline;gap:16px;transition:transform 200ms var(--ease);}
.cap-num{
  font-family:var(--font-title);font-size:13px;color:var(--copper);letter-spacing:.14em;
}
.cap-item p{margin-top:10px;color:var(--text-2);font-size:15.5px;}
.cap-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13.5px;color:var(--text-3);transition:color 180ms var(--ease);
}
.cap-item:hover .cap-more{color:var(--copper);}

/* ============ 数据 ============ */
.stats{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.stat{padding:44px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{
  display:block;font-family:var(--font-title);
  font-size:clamp(2.6rem,5vw,4rem);line-height:1;color:var(--copper);
}
.stat span{display:block;margin-top:14px;font-size:12.5px;color:var(--text-3);letter-spacing:.02em;}
.stat em{display:block;font-style:normal;margin-top:8px;font-size:14px;color:var(--text-2);}

/* ============ 内容卡片 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px 22px;box-shadow:var(--sh-1);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--copper);box-shadow:var(--sh-2);}
.post-thumb{overflow:hidden;border-radius:var(--r-img);}
.post-thumb img{width:100%;aspect-ratio:16/10;transition:transform 320ms var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.02);}
.post-card h3{
  font-size:1.1rem;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-desc{
  color:var(--text-2);font-size:14.5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line-weak);
  font-size:13px;color:var(--text-3);
}
.post-meta .arrow{color:var(--copper);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state svg{width:32px;height:32px;stroke:var(--text-3);margin:0 auto 14px;}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:18px;}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.case-main{
  grid-column:span 8;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.case-main:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--sh-2);}
.case-main img{width:100%;aspect-ratio:4/3;}
.case-main h3{margin-top:20px;}
.case-main p{margin-top:12px;color:var(--text-2);font-size:15px;}
.case-side{grid-column:span 4;display:grid;gap:24px;}
.case-mini{
  display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--sh-1);
  transition:border-color 200ms var(--ease),transform 200ms var(--ease);
}
.case-mini:hover{border-color:var(--copper);transform:translateY(-2px);}
.case-mini img{width:96px;height:76px;}
.case-mini strong{display:block;font-family:var(--font-title);font-size:15.5px;color:var(--ink);}
.case-mini span{display:block;font-size:13.5px;color:var(--text-3);margin-top:6px;}
.case-rows{margin-top:48px;border-top:1px solid var(--line);}
.case-row{
  display:grid;grid-template-columns:180px 1fr;gap:32px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--line);
}
.case-row h3{font-size:1.1rem;}
.case-row p{color:var(--text-2);font-size:15px;}
.case-row .idx{
  font-family:var(--font-title);font-size:13px;color:var(--copper);letter-spacing:.16em;
  display:block;margin-bottom:8px;
}

/* ============ 方案 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);}
.plan{
  padding:34px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  transition:background-color 200ms var(--ease);
}
.plan:last-child{border-right:0;}
.plan:hover{background:var(--alt);}
.plan-num{font-family:var(--font-title);font-size:13px;color:var(--copper);letter-spacing:.16em;}
.plan h3{margin-top:14px;font-size:1.2rem;}
.plan ul{margin-top:18px;display:grid;gap:12px;}
.plan li{
  position:relative;padding-left:18px;color:var(--text-2);font-size:15px;
  border-bottom:1px solid var(--line-weak);padding-bottom:12px;
}
.plan li:last-child{border-bottom:0;padding-bottom:0;}
.plan li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:1px;background:var(--copper);
}

/* ============ FAQ ============ */
.faq-list{max-width:900px;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;color:var(--ink);font-family:var(--font-title);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  position:relative;flex:0 0 auto;width:16px;height:16px;
  transition:transform 240ms var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--copper);
}
.faq-item summary .plus::before{left:0;top:7.5px;width:16px;height:1.5px;}
.faq-item summary .plus::after{top:0;left:7.5px;width:1.5px;height:16px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item .answer{max-width:720px;padding:0 0 26px;color:var(--text-2);font-size:15.5px;}

/* ============ CTA / 表单 ============ */
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;}
.field{margin-bottom:26px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:8px 0;font-size:15.5px;border-radius:0;
  transition:border-color 180ms var(--ease);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-bottom:2px solid var(--copper);}
.field.has-error input,.field.has-error textarea{border-bottom-color:var(--err);}
.field .err-text{display:none;margin-top:8px;font-size:12px;color:var(--err);}
.field.has-error .err-text{display:block;}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:6px;}
.contact-panel{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  padding:26px;box-shadow:var(--sh-1);
}
.contact-list{display:grid;gap:18px;margin-top:22px;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.contact-list svg{width:18px;height:18px;stroke:var(--copper);flex:0 0 auto;margin-top:5px;}
.contact-panel img{width:100%;aspect-ratio:16/9;margin-top:24px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:#E8E4DA;padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo svg{stroke:var(--copper-light);}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(232,228,218,.72);max-width:300px;}
.footer-title{font-size:12px;letter-spacing:.2em;color:rgba(232,228,218,.55);margin-bottom:18px;font-weight:600;}
.footer-links{display:grid;gap:12px;}
.footer-links a{
  font-size:14px;color:rgba(232,228,218,.82);display:inline-flex;align-items:center;gap:6px;
  transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-links a:hover{color:var(--copper-light);transform:translateX(3px);}
.footer-links a::after{content:"→";opacity:0;transition:opacity 180ms var(--ease);}
.footer-links a:hover::after{opacity:1;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(232,228,218,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(232,228,218,.55);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 20px;}
  .hero-grid{gap:40px;}
  .cap-grid{gap:40px;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .mega-panel{width:600px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-right .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-statbar{position:static;margin-top:20px;display:inline-flex;}
  .cap-grid{grid-template-columns:1fr;}
  .cap-side{position:static;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .case-grid{grid-template-columns:repeat(6,1fr);}
  .case-main{grid-column:span 6;}
  .case-side{grid-column:span 6;grid-template-columns:repeat(2,minmax(0,1fr));}
  .plan-grid{grid-template-columns:1fr;}
  .plan{border-right:0;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .post-grid{grid-template-columns:1fr;}
  .case-side{grid-template-columns:1fr;}
  .case-row{grid-template-columns:1fr;gap:12px;}
  .hero-points{grid-template-columns:1fr;}
  .hero-points li{border-right:0;border-bottom:1px solid var(--line);padding:16px 0;}
  .hero-points li:last-child{border-bottom:0;}
  .sec-head--row{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .mega-panel{width:calc(100vw - 32px);}
}

/* roulang page: article */
:root{
  --ink:#143A3C;--ink-deep:#0E2A2C;--ink-soft:#1F5254;
  --copper:#BE7B32;--copper-light:#E3B478;
  --paper:#F6F4EF;--card:#FFFFFF;--alt:#F1EEE7;
  --line:#E3DED3;--line-weak:#EDE9E0;
  --text:#22292B;--text-2:#6B7477;--text-3:#92999B;
  --ok:#2E7D5B;--warn:#C08A2E;--err:#B4453C;
  --r-card:6px;--r-btn:4px;--r-pill:999px;
  --sh:0 1px 2px rgba(20,58,60,.06);
  --sh-hover:0 12px 32px -18px rgba(20,58,60,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  --header-h:72px;
}
*,*::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(--font-sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;color:var(--ink)}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:4px;z-index:999}
.skip:focus{left:16px;top:12px}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;background:rgba(246,244,239,.82);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid transparent;transition:background .22s var(--ease),border-color .22s var(--ease)}
.site-header.is-scrolled{background:rgba(246,244,239,.96);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:30px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.logo svg{width:20px;height:20px;stroke:var(--ink);flex:none}
.logo-text{font-family:var(--font-serif);font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:26px;list-style:none}
.nav-link{position:relative;display:inline-block;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--copper);transition:width .22s var(--ease)}
.nav-link:hover,.nav-link.is-active{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{width:100%}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-wrap{position:relative}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:var(--r-btn);padding:8px 14px;font-size:14px;color:var(--ink);background:#fff;transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease)}
.mega-trigger svg{width:16px;height:16px;stroke:currentColor;transition:transform .2s var(--ease)}
.mega-trigger:hover{border-color:var(--copper);color:var(--copper)}
.mega-trigger[aria-expanded="true"] svg{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 14px);width:700px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:0 24px 56px -28px rgba(20,58,60,.3);padding:24px;display:grid;grid-template-columns:1.1fr .9fr;gap:24px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12px;letter-spacing:.2em;color:var(--text-3);margin-bottom:14px}
.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:4px 16px}
.mega-links a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);padding:7px 8px;border-radius:4px;transition:background .16s var(--ease),color .16s var(--ease),transform .16s var(--ease)}
.mega-links a:hover{background:var(--alt);color:var(--ink);transform:translateX(3px)}
.mega-links .dot{width:5px;height:5px;border-radius:50%;background:var(--copper-light);flex:none}
.mega-cards{display:flex;flex-direction:column;gap:12px}
.mega-card{display:grid;grid-template-columns:88px 1fr;gap:14px;align-items:center;border:1px solid var(--line);border-radius:var(--r-card);padding:12px;transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.mega-card:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.mega-card img{width:88px;height:62px;object-fit:cover;border-radius:4px}
.mega-card b{display:block;font-size:14px;color:var(--ink);font-weight:700;line-height:1.4}
.mega-card span{display:block;font-size:12px;color:var(--text-3);line-height:1.5;margin-top:4px}
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:4px;background:#fff}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink)}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

/* ---------- breadcrumb / article head ---------- */
main{padding-top:var(--header-h)}
.article-hero{padding:clamp(36px,5vw,58px) 0 clamp(28px,4vw,40px);border-bottom:1px solid var(--line);background:linear-gradient(180deg,#F6F4EF 0%,#F1EEE7 100%)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text-3);max-width:70%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.24;letter-spacing:-.01em;margin-top:18px;max-width:940px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;font-size:12px;color:var(--ink);background:rgba(255,255,255,.7);transition:border-color .18s var(--ease),color .18s var(--ease)}
.badge:hover{border-color:var(--copper);color:var(--copper)}
.meta-dot{width:1px;height:12px;background:var(--line)}

/* ---------- article body ---------- */
.article-section{padding:clamp(48px,6vw,80px) 0 clamp(56px,7vw,96px)}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:#2C3335}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{font-size:clamp(1.4rem,2.2vw,1.75rem);line-height:1.4;margin:2.2em 0 .8em;padding-left:14px;border-left:3px solid var(--copper)}
.article-body h3{font-size:1.3rem;line-height:1.45;margin:1.8em 0 .6em}
.article-body h4{font-size:1.08rem;margin:1.6em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.35em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--copper)}
.article-body blockquote{margin:1.6em 0;border-left:3px solid var(--copper);background:var(--alt);padding:16px 24px;color:var(--text-2);border-radius:0 4px 4px 0}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-card);margin:1.6em 0;width:100%}
.article-body a{color:var(--copper);border-bottom:1px solid rgba(190,123,50,.45);transition:border-color .16s var(--ease),color .16s var(--ease)}
.article-body a:hover{border-bottom-width:2px;color:#9E6323}
.article-body strong{color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:500}
.article-body td{border-bottom:1px solid var(--line-weak);padding:12px 14px}
.article-body tr:hover td{background:var(--alt)}
.article-body code{background:var(--alt);border:1px solid var(--line-weak);border-radius:4px;padding:1px 6px;font-size:.92em}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}

/* ---------- tail components ---------- */
.article-tail{max-width:760px;margin:0 auto}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:32px;margin-top:48px;border-top:1px solid var(--line)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
.post-nav a{display:block;border:1px solid var(--line);background:var(--card);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.post-nav a:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.post-nav .pn-label{font-size:12px;letter-spacing:.18em;color:var(--text-3);display:block;margin-bottom:8px}
.post-nav .pn-title{font-family:var(--font-serif);font-size:16px;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-nav .pn-next{text-align:right}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:32px;font-size:14px;color:var(--text-2);transition:color .16s var(--ease),transform .16s var(--ease)}
.back-link svg{width:16px;height:16px;stroke:currentColor}
.back-link:hover{color:var(--copper);transform:translateX(-3px)}

.related{padding:clamp(48px,6vw,80px) 0;background:var(--alt);border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.eyebrow{font-size:12px;letter-spacing:.2em;color:var(--copper);display:block;margin-bottom:10px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.3}
.more-link{font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);padding-bottom:4px;transition:color .18s var(--ease),border-color .18s var(--ease)}
.more-link:hover{color:var(--copper);border-color:var(--copper)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.card:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.card:hover img{transform:scale(1.02)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;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:12px;color:var(--text-3);padding-top:14px;border-top:1px solid var(--line-weak)}
.card-foot .arrow{color:var(--copper);transition:transform .18s var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ---------- empty state ---------- */
.empty-state{max-width:760px;margin:0 auto;text-align:center;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--card)}
.empty-state svg{width:32px;height:32px;stroke:var(--copper);margin:0 auto 16px}
.empty-state p{font-size:14px;color:var(--text-2);margin:0 0 20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:500;padding:14px 26px;border-radius:var(--r-btn);transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);border:1px solid transparent}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(20,58,60,.08)}

/* ---------- back to top ---------- */
.back-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--sh);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s,border-color .18s var(--ease),color .18s var(--ease);z-index:90}
.back-top svg{width:18px;height:18px;stroke:var(--ink);transition:stroke .18s var(--ease)}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{border-color:var(--copper)}
.back-top:hover svg{stroke:var(--copper)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#E8E4DA;border-top:1px solid rgba(227,222,211,.14);padding:clamp(56px,7vw,88px) 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:56px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo svg{stroke:#fff}
.footer-brand .logo-text{color:#fff;font-size:17px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(232,228,218,.72);margin:0;max-width:320px}
.footer-title{font-family:var(--font-serif);font-size:15px;color:#fff;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(232,228,218,.72);display:inline-flex;align-items:center;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--copper-light);transform:translateX(3px)}
.footer-bottom{border-top:1px solid rgba(227,222,211,.14);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(232,228,218,.55)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .mega-panel{width:640px}
  .card-grid{gap:20px}
}
@media (max-width:1023px){
  .nav-menu{gap:18px}
  .mega-panel{width:560px;grid-template-columns:1fr}
  .mega-cards{flex-direction:row}
  .mega-card{grid-template-columns:1fr;text-align:left}
  .mega-card img{width:100%;height:96px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .mega-wrap{display:none}
  .nav-menu{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;flex-direction:column;align-items:stretch;gap:0;background:var(--paper);padding:12px 24px 40px;overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s}
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none}
  .nav-menu li{border-bottom:1px solid var(--line-weak)}
  .nav-link{display:block;padding:16px 0;font-size:16px}
  .nav-link::after{display:none}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .article-body{font-size:16px;line-height:1.85}
  .card-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav .pn-next{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .back-top{right:16px;bottom:18px;width:40px;height:40px}
  .breadcrumb .current{max-width:100%;white-space:normal}
}
@media (max-width:480px){
  .nav-inner{gap:14px}
  .logo-text{font-size:16px}
  .article-title{font-size:1.7rem}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .btn{width:100%}
  .card-body{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#143A3C;
  --ink-deep:#0E2A2C;
  --ink-light:#1F5254;
  --brass:#BE7B32;
  --brass-light:#E3B478;
  --brass-deep:#A4652A;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --alt:#F1EEE7;
  --line:#E3DED3;
  --line-weak:#EDE9E0;
  --text:#22292B;
  --text-2:#6B7477;
  --text-3:#92999B;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4453C;
  --radius:6px;
  --radius-sm:4px;
  --shadow:0 1px 2px rgba(20,58,60,.06);
  --shadow-hover:0 12px 32px -18px rgba(20,58,60,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:74px;
}
*,*::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:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  padding-top:var(--nav-h);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink-deep);font-weight:600}
p{margin:0}
figure{margin:0}
:focus-visible{outline:2px solid var(--brass);outline-offset:2px;border-radius:2px}
::selection{background:rgba(190,123,50,.22)}

.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:clamp(72px,8vw,128px) 0}
.section--alt{background:var(--alt)}
.section--tight{padding-top:clamp(48px,5vw,72px);padding-bottom:clamp(48px,5vw,72px)}

.eyebrow{
  font-size:12px;letter-spacing:.2em;color:var(--brass);
  text-transform:uppercase;font-weight:600;margin-bottom:14px;display:block;
}
.h1{font-size:clamp(2.2rem,5.4vw,4.2rem);line-height:1.12;letter-spacing:-.02em}
.h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.01em}
.h3{font-size:1.25rem;line-height:1.4}
.lead{color:var(--text-2);font-size:1.02rem}
.muted{color:var(--text-3);font-size:.85rem}
.text-md{max-width:760px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all 180ms var(--ease);white-space:nowrap;
}
.btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--brass);border-color:var(--brass);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(20,58,60,.08)}
.btn-on-dark{background:var(--brass);color:#fff;border-color:var(--brass)}
.btn-on-dark:hover{background:var(--brass-light);border-color:var(--brass-light);color:var(--ink-deep);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-underline{border-bottom:1px solid currentColor;transition:all 180ms var(--ease)}
.link-underline:hover{border-bottom-width:2px;color:var(--brass)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--line);border-radius:999px;
  padding:4px 10px;font-size:12px;color:var(--text-2);
  background:transparent;transition:all 180ms var(--ease);
}
.badge:hover{border-color:var(--brass);color:var(--brass)}
.badge--solid{background:rgba(190,123,50,.1);border-color:rgba(190,123,50,.35);color:var(--brass)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);
  background:rgba(246,244,239,.86);
  border-bottom:1px solid transparent;
  transition:background 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{background:rgba(246,244,239,.97);border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,58,60,.05)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:32px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo svg{width:20px;height:20px;stroke:var(--ink);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.logo-text{font-family:var(--font-serif);font-size:1.1rem;font-weight:600;color:var(--ink-deep);letter-spacing:.01em}
.nav-main{flex:1 1 auto;min-width:0}
.nav-menu{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--text);transition:color 180ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brass);transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.drawer-only{display:none}

.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;color:var(--ink);padding:8px 12px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--card);
  transition:all 180ms var(--ease);
}
.mega-trigger svg{width:15px;height:15px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform 200ms var(--ease)}
.mega-trigger:hover{border-color:var(--brass);color:var(--brass)}
.mega-wrap.is-open .mega-trigger svg{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:680px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 18px 40px -24px rgba(20,58,60,.28);
  padding:24px;display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
}
.mega-col-title{font-size:12px;letter-spacing:.18em;color:var(--text-3);margin-bottom:14px}
.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}
.mega-links a{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);
  padding:6px 0;transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.mega-links a .dot{width:4px;height:4px;border-radius:50%;background:var(--line);flex:0 0 auto;transition:background 180ms var(--ease)}
.mega-links a:hover{color:var(--ink);transform:translateX(3px)}
.mega-links a:hover .dot{background:var(--brass)}
.mega-cards{display:grid;gap:14px;align-content:start;border-left:1px solid var(--line-weak);padding-left:24px}
.mega-card{display:block;border-radius:var(--radius);overflow:hidden}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);transition:transform 240ms var(--ease)}
.mega-card:hover img{transform:scale(1.02)}
.mega-card-title{font-size:14px;font-weight:600;color:var(--ink);margin-top:10px}
.mega-card-desc{font-size:12.5px;color:var(--text-3);line-height:1.6;margin-top:2px}
.mega-card-more{font-size:12.5px;color:var(--brass);margin-top:6px;display:inline-block}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);
  align-items:center;justify-content:center;background:var(--card);
}
.nav-toggle svg{width:18px;height:18px;stroke:var(--ink);stroke-width:1.5;fill:none;stroke-linecap:round}

/* ---------- hero ---------- */
.page-hero{background:var(--paper);padding:clamp(56px,7vw,96px) 0 clamp(40px,5vw,64px)}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:34px;flex-wrap:wrap}
.crumb a{transition:color 180ms var(--ease)}
.crumb a:hover{color:var(--brass)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.hero-title{margin-bottom:20px}
.hero-sub{font-size:1.02rem;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid var(--line)}
.hero-point{flex:1 1 160px;padding:16px 20px 0 0;border-right:1px solid var(--line);padding-left:20px}
.hero-point:first-child{padding-left:0}
.hero-point:last-child{border-right:0}
.hero-point b{display:block;font-family:var(--font-serif);font-size:1.05rem;color:var(--ink)}
.hero-point span{font-size:13px;color:var(--text-3)}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.hero-stat{
  position:absolute;top:-18px;left:-18px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 20px;box-shadow:var(--shadow);
}
.hero-stat strong{display:block;font-family:var(--font-serif);font-size:1.6rem;color:var(--brass);line-height:1.1}
.hero-stat span{font-size:12px;color:var(--text-3)}
.hero-figure figcaption{margin-top:12px;font-size:13px;color:var(--text-3)}

/* ---------- knowledge layout ---------- */
.kb-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:64px;align-items:start}
.toc{position:sticky;top:calc(var(--nav-h) + 32px)}
.toc-title{font-size:12px;letter-spacing:.18em;color:var(--text-3);margin-bottom:18px}
.toc-list{position:relative;padding-left:22px;border-left:1px solid var(--line)}
.toc-list a{
  position:relative;display:block;padding:9px 0;font-size:14.5px;color:var(--text-2);
  transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.toc-list a::before{
  content:"";position:absolute;left:-27px;top:50%;transform:translateY(-50%);
  width:8px;height:8px;border-radius:50%;border:1px solid var(--line);background:var(--paper);
  transition:all 180ms var(--ease);
}
.toc-list a:hover{color:var(--ink);transform:translateX(3px)}
.toc-list a.is-active{color:var(--ink);font-weight:600}
.toc-list a.is-active::before{background:var(--brass);border-color:var(--brass)}
.toc-aside{margin-top:28px;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.toc-aside p{font-size:13px;color:var(--text-2);line-height:1.75}
.toc-aside a{font-size:13px;color:var(--brass);display:inline-flex;align-items:center;gap:6px;margin-top:10px}
.toc-aside a svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.5;fill:none}

.timeline{position:relative}
.tl-item{position:relative;padding-left:38px;padding-bottom:56px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:0;top:12px;width:10px;height:10px;border-radius:50%;
  background:var(--brass);box-shadow:0 0 0 4px rgba(190,123,50,.12);
}
.tl-item::after{
  content:"";position:absolute;left:4.5px;top:30px;bottom:0;width:1px;background:var(--line);
}
.tl-item:last-child::after{display:none}
.tl-index{font-size:12px;letter-spacing:.2em;color:var(--brass);font-weight:600}
.tl-title{font-size:1.3rem;margin:6px 0 12px}
.tl-text{color:var(--text-2);max-width:660px}
.tl-list{margin-top:16px;display:grid;gap:10px}
.tl-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2)}
.tl-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--brass);border-radius:1px;
}
.tl-figure{margin-top:20px}
.tl-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.tl-figure figcaption{margin-top:10px;font-size:13px;color:var(--text-3)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.check-list{border-top:1px solid var(--line)}
.check-item{
  display:flex;align-items:flex-start;gap:18px;padding:20px 4px;
  border-bottom:1px solid var(--line);transition:background 180ms var(--ease),padding 180ms var(--ease);
}
.check-item:hover{background:var(--alt);padding-left:12px}
.check-num{font-family:var(--font-serif);font-size:.9rem;color:var(--brass);min-width:26px;padding-top:3px}
.check-body b{display:block;font-size:16px;color:var(--ink);font-family:var(--font-sans);font-weight:600}
.check-body span{font-size:14px;color:var(--text-2)}
.check-arrow{margin-left:auto;flex:0 0 auto;padding-top:6px}
.check-arrow svg{width:18px;height:18px;stroke:var(--text-3);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:all 180ms var(--ease)}
.check-item:hover .check-arrow svg{stroke:var(--brass);transform:translateX(4px)}

.notice{
  border-left:3px solid var(--brass);background:var(--card);
  padding:18px 24px;border-radius:0 var(--radius) var(--radius) 0;
  font-size:14.5px;color:var(--text-2);
}
.notice b{color:var(--ink)}
.aside-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.aside-figure figcaption{margin-top:10px;font-size:13px;color:var(--text-3)}

/* ---------- cta ---------- */
.cta-band{background:var(--ink-deep);color:#E8E4DA;padding:clamp(56px,6vw,88px) 0}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.cta-band .h2{color:#fff}
.cta-band p{color:rgba(232,228,218,.75);margin-top:14px;max-width:560px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;font-size:13px;color:rgba(232,228,218,.6)}
.cta-meta span{display:inline-flex;align-items:center;gap:8px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#E8E4DA;border-top:1px solid rgba(227,222,211,.14);padding-top:clamp(56px,6vw,80px)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo svg{stroke:var(--brass-light)}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;color:rgba(232,228,218,.68);line-height:1.8;max-width:340px}
.footer-title{font-size:12px;letter-spacing:.18em;color:rgba(232,228,218,.5);margin-bottom:18px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(232,228,218,.82);display:inline-flex;align-items:center;gap:0;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer-links a:hover{color:var(--brass-light);transform:translateX(3px)}
.footer-bottom{
  border-top:1px solid rgba(227,222,211,.14);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(232,228,218,.55);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ---------- responsive ---------- */
@media (max-width:1120px){
  .kb-layout{grid-template-columns:240px minmax(0,1fr);gap:44px}
  .hero-grid{gap:40px}
  .check-grid{gap:40px}
}
@media (max-width:1023px){
  .nav-menu{gap:20px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .kb-layout{grid-template-columns:1fr;gap:36px}
  .toc{position:static}
  .toc-list{border-left:1px solid var(--line)}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .nav-main{position:fixed;top:var(--nav-h);right:0;bottom:0;width:min(84vw,360px);
    background:var(--card);border-left:1px solid var(--line);
    padding:32px 24px;overflow-y:auto;
    transform:translateX(100%);transition:transform 240ms var(--ease);
    box-shadow:-12px 0 32px -24px rgba(20,58,60,.32);
  }
  .nav-main.is-open{transform:translateX(0)}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0}
  .nav-menu li{border-bottom:1px solid var(--line-weak)}
  .nav-link{display:block;padding:15px 0;font-size:15.5px}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--brass)}
  .drawer-only{display:block}
  .drawer-group-title{font-size:12px;letter-spacing:.18em;color:var(--text-3);padding:20px 0 8px}
  .mega-wrap{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .hero-point{flex:1 1 100%;border-right:0;padding-left:0;padding-bottom:14px}
  .check-item:hover{padding-left:4px}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn{width:100%}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .h1{font-size:2rem}
  .hero-stat{position:static;margin-bottom:14px;display:inline-block}
  .logo-text{font-size:1rem}
}

/* roulang page: category2 */
:root{
  --brand:#143A3C;
  --brand-dark:#0E2A2C;
  --brand-light:#1F5254;
  --copper:#BE7B32;
  --copper-light:#E3B478;
  --paper:#F6F4EF;
  --alt:#F1EEE7;
  --card:#FFFFFF;
  --line:#E3DED3;
  --line-weak:#EDE9E0;
  --text:#22292B;
  --text-2:#6B7477;
  --text-3:#92999B;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4453C;
  --radius:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(20,58,60,.06);
  --shadow-2:0 12px 32px -18px rgba(20,58,60,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --header-h:72px;
}
*,*::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:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;color:var(--brand)}
p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:clamp(72px,8vw,128px) 0}
.section--alt{background:var(--alt)}
.section--line{border-top:1px solid var(--line)}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(246,244,239,.92);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 24px -22px rgba(20,58,60,.5);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand)}
.logo svg{width:20px;height:20px;stroke:currentColor}
.logo-text{font-family:var(--font-serif);font-size:18px;letter-spacing:.01em;font-weight:600;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--text-2);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--copper);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:500}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;font-size:15px;color:var(--brand);
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.mega-trigger svg{width:16px;height:16px;stroke:currentColor;transition:transform .2s var(--ease)}
.mega-trigger:hover{border-color:var(--copper);color:var(--copper)}
.mega-wrap.is-open .mega-trigger{border-color:var(--copper);color:var(--copper)}
.mega-wrap.is-open .mega-trigger svg{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:700px;
  display:grid;grid-template-columns:1.45fr 1fr;gap:28px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-2);padding:26px 26px 22px;
  opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
}
.mega-wrap.is-open .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-title{font-size:12px;letter-spacing:.2em;color:var(--text-3);margin-bottom:14px}
.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:4px 18px}
.mega-links a{
  display:flex;align-items:center;gap:8px;
  padding:7px 0;font-size:14px;color:var(--text-2);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.mega-links .dot{width:5px;height:5px;border-radius:50%;background:var(--line);flex:none;transition:background .16s var(--ease)}
.mega-links a:hover{color:var(--brand);transform:translateX(3px)}
.mega-links a:hover .dot{background:var(--copper)}
.mega-cards{display:grid;gap:14px;align-content:start;border-left:1px solid var(--line-weak);padding-left:26px}
.mega-card{display:block;border-radius:var(--radius);overflow:hidden;transition:transform .2s var(--ease)}
.mega-card img{aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.mega-card-body{padding:10px 2px 0}
.mega-card-body strong{display:block;font-size:15px;color:var(--brand);font-weight:600}
.mega-card-body span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}
.mega-card:hover{transform:translateY(-2px)}
.mega-card:hover strong{color:var(--copper)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;padding:11px 10px}
.nav-toggle span{display:block;height:1.5px;background:var(--brand);border-radius:2px}
.nav-toggle span+span{margin-top:5px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);z-index:120;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:var(--radius-btn);font-size:20px;line-height:1;color:var(--brand)}
.drawer-nav{display:grid;gap:2px;border-top:1px solid var(--line);padding-top:10px}
.drawer-nav a{display:block;padding:12px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line-weak)}
.drawer-nav a.is-active{color:var(--brand);font-weight:500}
.drawer-group{margin-top:22px;font-size:13px;color:var(--text-3);letter-spacing:.14em}
.drawer-group-links{display:grid;gap:2px;margin-top:8px}
.drawer-group-links a{display:block;padding:9px 4px;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line-weak)}
.drawer-mask{position:fixed;inset:0;background:rgba(14,42,44,.4);z-index:110;opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ---------- hero ---------- */
.page-hero{
  padding:calc(var(--header-h) + 64px) 0 clamp(56px,6vw,88px);
  background:
    linear-gradient(180deg,rgba(20,58,60,.05),rgba(246,244,239,.96)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumbs a{color:var(--text-3);transition:color .16s var(--ease)}
.crumbs a:hover{color:var(--copper)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--copper);
  border:1px solid var(--line);border-radius:999px;padding:5px 14px;background:rgba(255,255,255,.7);
}
h1{
  font-size:clamp(2.2rem,5.4vw,4.2rem);line-height:1.12;letter-spacing:-.02em;
  margin:20px 0 0;
}
h1 .accent{position:relative;white-space:nowrap}
h1 .accent::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:6px;
  background:rgba(190,123,50,.24);z-index:-1;
}
.hero-sub{max-width:760px;margin-top:20px;font-size:17px;color:var(--text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;font-size:15px;border-radius:var(--radius-btn);
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--copper);border-color:var(--copper);color:#0E2A2C;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:rgba(20,58,60,.08)}
.hero-points{display:grid;gap:0;margin-top:34px;border-top:1px solid var(--line-weak)}
.hero-points li{display:flex;gap:12px;padding:11px 0;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--line-weak)}
.hero-points li::before{content:"";width:2px;flex:none;background:var(--copper);margin:4px 0}
.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.hero-media img{aspect-ratio:16/10;object-fit:cover;width:100%}
.data-bar{
  position:absolute;left:0;right:0;bottom:0;display:flex;gap:28px;
  background:rgba(246,244,239,.94);border-top:1px solid var(--line);
  padding:14px 20px;
}
.data-bar div{display:flex;flex-direction:column}
.data-bar b{font-family:var(--font-serif);font-size:1.5rem;color:var(--copper);line-height:1.2}
.data-bar span{font-size:12px;color:var(--text-3);letter-spacing:.06em}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.01em}
.section-head p{max-width:520px;font-size:15px;color:var(--text-2);margin-top:12px}
.section-head .more{
  font-size:14px;color:var(--brand);border-bottom:1px solid var(--brand);
  padding-bottom:2px;white-space:nowrap;transition:color .16s var(--ease),border-color .16s var(--ease),border-width .16s var(--ease);
}
.section-head .more:hover{color:var(--copper);border-color:var(--copper);border-bottom-width:2px}

/* ---------- 2x2 要点卡 ---------- */
.point-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.point-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 34px 34px;min-height:268px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.point-card:hover{transform:translateY(-2px);border-color:var(--copper);box-shadow:var(--shadow-2)}
.point-num{font-family:var(--font-serif);font-size:1.5rem;color:var(--copper);letter-spacing:.04em}
.point-card h3{font-size:1.25rem;line-height:1.4;margin-top:18px}
.point-card p{margin-top:14px;font-size:15px;color:var(--text-2);max-width:44ch}
.point-arrow{margin-top:auto;padding-top:26px;display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--brand)}
.point-arrow svg{width:18px;height:18px;stroke:var(--copper);transition:transform .2s var(--ease)}
.point-card:hover .point-arrow svg{transform:translateX(5px)}

/* ---------- 对比表 ---------- */
.table-wrap{
  margin-top:8px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;overflow-x:auto;box-shadow:var(--shadow-1);
}
table{width:100%;border-collapse:collapse;min-width:720px}
thead th{
  background:var(--brand);color:#fff;font-family:var(--font-sans);font-weight:500;
  font-size:14px;text-align:left;padding:15px 18px;white-space:nowrap;
}
tbody td{padding:16px 18px;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--line-weak);vertical-align:top}
tbody td:first-child{color:var(--brand);font-weight:500;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background .16s var(--ease)}
tbody tr:hover{background:var(--alt)}
.tag{display:inline-block;font-size:12px;padding:4px 10px;border:1px solid var(--line);border-radius:999px;color:var(--text-2);background:transparent;transition:border-color .16s var(--ease),color .16s var(--ease)}
.tag:hover{border-color:var(--copper);color:var(--copper)}

/* ---------- 警示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:#FFFDF7;border:1px solid var(--line);border-left:3px solid var(--copper);
  border-radius:var(--radius);padding:22px 26px;margin-top:32px;
}
.notice svg{width:22px;height:22px;stroke:var(--copper);flex:none;margin-top:3px}
.notice strong{display:block;font-size:15px;color:var(--brand);font-weight:600;margin-bottom:6px}
.notice p{font-size:14.5px;color:var(--text-2)}

/* ---------- 自查清单 ---------- */
.check-list{border-top:1px solid var(--line);margin-top:8px}
.check-item{
  display:grid;grid-template-columns:64px 1fr auto;gap:24px;align-items:center;
  padding:26px 8px;border-bottom:1px solid var(--line-weak);
  transition:background .18s var(--ease);
}
.check-item:hover{background:var(--alt)}
.check-item .idx{font-family:var(--font-serif);font-size:1.1rem;color:var(--copper)}
.check-item h3{font-size:17px;line-height:1.5}
.check-item p{font-size:14.5px;color:var(--text-2);margin-top:6px}
.check-item .go{display:inline-flex;align-items:center;color:var(--brand);font-size:14px;white-space:nowrap}
.check-item .go svg{width:18px;height:18px;stroke:var(--copper);transition:transform .18s var(--ease)}
.check-item:hover .go svg{transform:translateX(5px)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:920px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;color:var(--brand);cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{position:relative;width:16px;height:16px;flex:none;transition:transform .22s var(--ease)}
.faq summary .plus::before,.faq summary .plus::after{content:"";position:absolute;background:var(--copper)}
.faq summary .plus::before{left:0;right:0;top:7.5px;height:1.5px}
.faq summary .plus::after{top:0;bottom:0;left:7.5px;width:1.5px}
.faq details[open] summary .plus{transform:rotate(45deg)}
.faq .answer{max-width:720px;padding:0 4px 24px;font-size:15.5px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-dark);color:#E8E4DA}
.cta-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25}
.cta-inner p{margin-top:16px;font-size:15.5px;color:#C9C4B8;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-copper{background:var(--copper);color:#0E2A2C;border:1px solid var(--copper)}
.btn-copper:hover{background:var(--copper-light);border-color:var(--copper-light);transform:translateY(-1px)}
.btn-line{background:transparent;color:#E8E4DA;border:1px solid rgba(232,228,218,.4)}
.btn-line:hover{border-color:var(--copper-light);color:var(--copper-light)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-dark);color:#E8E4DA;border-top:1px solid rgba(232,228,218,.14);padding:clamp(56px,6vw,80px) 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#E8E4DA}
.footer-brand .logo svg{stroke:#E8E4DA}
.footer-brand p{margin-top:16px;font-size:14px;color:#A9A79E;max-width:36ch;line-height:1.8}
.footer-title{font-size:13px;letter-spacing:.18em;color:var(--copper-light);margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:#C9C4B8;display:inline-block;transition:color .16s var(--ease),transform .16s var(--ease)}
.footer-links a:hover{color:var(--copper-light);transform:translateX(3px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(232,228,218,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8F8D86;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.point-grid > *:nth-child(2){transition-delay:.06s}
.point-grid > *:nth-child(3){transition-delay:.12s}
.point-grid > *:nth-child(4){transition-delay:.18s}
.check-list > *:nth-child(2){transition-delay:.06s}
.check-list > *:nth-child(3){transition-delay:.12s}
.check-list > *:nth-child(4){transition-delay:.18s}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .mega-panel{width:620px}
}
@media (max-width:1023px){
  .nav-menu,.mega-wrap{display:none}
  .nav-toggle{display:block}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .point-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .check-item{grid-template-columns:40px 1fr;gap:16px}
  .check-item .go{grid-column:1 / -1;padding-left:56px}
  .point-card{min-height:0;padding:28px 24px}
  .data-bar{gap:18px;padding:12px 16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:480px){
  body{font-size:16px}
  h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .hero-points li{font-size:14px}
  .data-bar b{font-size:1.25rem}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#143A3C;
  --ink-deep:#0E2A2C;
  --ink-light:#1F5254;
  --copper:#BE7B32;
  --copper-light:#E3B478;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --alt:#F1EEE7;
  --line:#E3DED3;
  --line-weak:#EDE9E0;
  --text:#22292B;
  --text-2:#6B7477;
  --text-3:#92999B;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4453C;
  --radius:6px;
  --radius-sm:4px;
  --shadow:0 1px 2px rgba(20,58,60,.06);
  --shadow-hover:0 12px 32px -18px rgba(20,58,60,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:600}
p{margin:0}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:clamp(72px,8vw,128px) 0}
.section--alt{background:var(--alt)}
.section--tight{padding-top:clamp(48px,5vw,72px)}
.eyebrow{
  font-size:12px;
  letter-spacing:.2em;
  color:var(--copper);
  text-transform:uppercase;
  margin-bottom:14px;
  display:inline-block;
}
.lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:760px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:clamp(32px,4vw,56px)}
.sec-title{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.01em;max-width:720px}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:16px;max-width:640px;line-height:1.85}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
  border:1px solid transparent;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(20,58,60,.08)}
.btn-copper{background:var(--copper);color:#fff}
.btn-copper:hover{background:var(--copper-light);color:var(--ink-deep);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:border-color 180ms var(--ease),color 180ms var(--ease),gap 180ms var(--ease);
}
.link-arrow:hover{border-bottom-width:2px;border-color:var(--copper);color:var(--copper);gap:10px}
.link-arrow svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(246,244,239,.95);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:36px;height:74px}
.logo{display:inline-flex;align-items:center;gap:9px;flex-shrink:0}
.logo svg{width:20px;height:20px;stroke:var(--ink);fill:none}
.logo-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color 180ms var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper);transition:width 220ms var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:500}
.nav-link.is-active::after{width:100%}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--ink);
  padding:10px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(255,255,255,.6);
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease),color 180ms var(--ease);
}
.mega-trigger svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform 180ms var(--ease)}
.mega-trigger:hover{border-color:var(--copper);color:var(--copper)}
.mega-wrap.is-open .mega-trigger{border-color:var(--copper);color:var(--copper)}
.mega-wrap.is-open .mega-trigger svg{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:700px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 18px 44px -28px rgba(20,58,60,.32);
  padding:28px;display:grid;grid-template-columns:1.15fr .95fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-title{font-size:12px;letter-spacing:.18em;color:var(--text-3);margin-bottom:16px}
.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}
.mega-links a{
  display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--text-2);
  padding:6px 0;transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.mega-links a .dot{width:5px;height:5px;border-radius:50%;background:var(--line);flex-shrink:0;transition:background-color 180ms var(--ease)}
.mega-links a:hover{color:var(--ink);transform:translateX(3px)}
.mega-links a:hover .dot{background:var(--copper)}
.mega-cards{display:flex;flex-direction:column;gap:14px;border-left:1px solid var(--line-weak);padding-left:28px}
.mega-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.mega-card:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.mega-card img{width:100%;height:88px}
.mega-card-body{padding:12px 16px 14px}
.mega-card-body h4{font-size:15px;font-family:var(--font-sans);font-weight:500;color:var(--ink)}
.mega-card-body p{font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.6}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);align-items:center;justify-content:center;background:rgba(255,255,255,.6)}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none;stroke-width:1.5;stroke-linecap:round}
.drawer{display:none}

/* ---------- hero ---------- */
.page-hero{padding:calc(74px + clamp(48px,6vw,84px)) 0 clamp(56px,6vw,88px);position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(20,58,60,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(20,58,60,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:clamp(32px,4vw,64px);align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-3);transition:color 180ms var(--ease)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text-2)}
.hero-grid h1{font-size:clamp(2.1rem,4.4vw,3.4rem);line-height:1.14;letter-spacing:-.02em}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-points{margin-top:36px;display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:22px}
.hero-points li{
  position:relative;padding:0 22px;font-size:14px;color:var(--text-2);line-height:1.5;
}
.hero-points li:first-child{padding-left:0}
.hero-points li:not(:last-child){border-right:1px solid var(--line)}
.hero-points strong{display:block;color:var(--ink);font-size:15px;font-weight:500;margin-bottom:2px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;border-radius:var(--radius);border:1px solid var(--line)}
.data-bar{
  position:absolute;left:-1px;bottom:-1px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:14px 20px;display:flex;align-items:center;gap:16px;
}
.data-bar .num{font-family:var(--font-serif);font-size:26px;color:var(--copper);line-height:1}
.data-bar .cap{font-size:12px;color:var(--text-3);line-height:1.5}

/* ---------- steps ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:clamp(24px,3vw,40px)}
.steps::before{content:"";position:absolute;top:22px;left:13%;right:13%;border-top:1px dashed var(--line)}
.step{position:relative;padding-top:0}
.step-num{
  position:relative;z-index:1;width:44px;height:44px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);color:var(--copper);
  display:grid;place-items:center;font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
}
.step:hover .step-num{background:var(--ink);border-color:var(--ink);color:var(--copper-light)}
.step h3{font-size:1.18rem;margin-top:22px;line-height:1.4}
.step p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.step .step-tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--text-3);letter-spacing:.06em}

/* ---------- symptom list ---------- */
.sym-list{border-top:1px solid var(--line)}
.sym-item{
  display:grid;grid-template-columns:64px 1.1fr 1fr auto;gap:24px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background-color 200ms var(--ease),padding 200ms var(--ease);
}
.sym-item:hover{background:var(--alt);padding-left:16px;padding-right:16px}
.sym-idx{font-family:var(--font-serif);font-size:18px;color:var(--text-3);transition:color 200ms var(--ease)}
.sym-item:hover .sym-idx{color:var(--copper)}
.sym-title{font-size:17px;color:var(--ink);font-weight:500;line-height:1.5}
.sym-reason{font-size:14.5px;color:var(--text-2);line-height:1.7}
.sym-act{font-size:14px;color:var(--ink-light);white-space:nowrap}
.sym-arrow{width:16px;height:16px;stroke:var(--copper);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform 200ms var(--ease)}
.sym-item:hover .sym-arrow{transform:translateX(4px)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:5fr 7fr;gap:clamp(28px,4vw,56px);align-items:center}
.check-grid img{border-radius:var(--radius);border:1px solid var(--line);aspect-ratio:4/3;width:100%}
.check-list{border-top:1px solid var(--line);margin-top:24px}
.check-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line-weak);
  font-size:15.5px;color:var(--text-2);line-height:1.75;
}
.check-list li strong{color:var(--ink);font-weight:500}
.check-mark{
  flex-shrink:0;width:20px;height:20px;margin-top:5px;border-radius:50%;
  border:1px solid var(--copper);display:grid;place-items:center;
  color:var(--copper);font-size:11px;line-height:1;
}

/* ---------- notice ---------- */
.notice{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-left:3px solid var(--copper);border-radius:var(--radius);
  padding:20px 24px;margin-top:32px;
}
.notice strong{color:var(--ink);font-weight:500;display:block;margin-bottom:4px;font-size:15.5px}
.notice p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:17px;color:var(--ink);font-family:var(--font-serif);font-weight:600;
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--copper)}
.faq-plus{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--copper);transition:transform 260ms var(--ease),opacity 260ms var(--ease);
}
.faq-plus::before{left:0;top:7.5px;width:16px;height:1.5px}
.faq-plus::after{left:7.5px;top:0;width:1.5px;height:16px}
.faq-item[open] .faq-plus::after{transform:rotate(90deg);opacity:0}
.faq-answer{max-width:720px;padding:0 0 26px;font-size:15.5px;color:var(--text-2);line-height:1.9}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.rel-item{
  padding:24px 26px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
  transition:background-color 200ms var(--ease);
}
.rel-grid .rel-item:nth-child(3n){border-right:0}
.rel-item:hover{background:var(--card)}
.rel-item span{font-size:12px;letter-spacing:.16em;color:var(--text-3)}
.rel-item strong{font-size:16px;color:var(--ink);font-weight:500}
.rel-item em{font-style:normal;font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- cta ---------- */
.cta-band{background:var(--ink-deep);color:#E8E4DA;padding:clamp(56px,6vw,88px) 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;max-width:620px}
.cta-band p{margin-top:14px;color:rgba(232,228,218,.78);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#E8E4DA;padding:clamp(56px,6vw,88px) 0 0;border-top:1px solid rgba(232,228,218,.12)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer .logo svg{stroke:#E8E4DA}
.site-footer .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(232,228,218,.7);line-height:1.85;max-width:320px}
.footer-title{font-size:12px;letter-spacing:.18em;color:rgba(232,228,218,.5);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14.5px;color:rgba(232,228,218,.82);transition:color 180ms var(--ease),transform 180ms var(--ease);position:relative}
.footer-links a::before{content:"→";opacity:0;margin-right:0;transition:opacity 180ms var(--ease),margin-right 180ms var(--ease)}
.footer-links a:hover{color:var(--copper-light);transform:translateX(3px)}
.footer-links a:hover::before{opacity:1;margin-right:6px}
.footer-bottom{
  border-top:1px solid rgba(232,228,218,.14);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(232,228,218,.55);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-inner{gap:24px}
  .nav-menu{gap:22px}
  .mega-panel{width:640px}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:640px}
  .check-grid{grid-template-columns:1fr;gap:36px}
  .check-grid img{max-width:560px}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .steps::before{display:none}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .rel-grid .rel-item:nth-child(3n){border-right:1px solid var(--line)}
  .rel-grid .rel-item:nth-child(2n){border-right:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .sym-item{grid-template-columns:48px 1fr auto;row-gap:8px}
  .sym-reason{grid-column:2 / 4}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-menu,.mega-wrap{display:none}
  .nav-toggle{display:inline-flex}
  .drawer{
    display:block;position:fixed;top:74px;left:0;right:0;bottom:0;z-index:85;
    background:var(--paper);padding:20px 18px 40px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms;
  }
  body.drawer-open .drawer{opacity:1;visibility:visible;transform:translateY(0)}
  body.drawer-open{overflow:hidden}
  .drawer-group{border-bottom:1px solid var(--line);padding:6px 0}
  .drawer-group summary{
    list-style:none;cursor:pointer;padding:14px 0;font-size:16px;color:var(--ink);
    display:flex;align-items:center;justify-content:space-between;
  }
  .drawer-group summary::-webkit-details-marker{display:none}
  .drawer-group summary::after{content:"＋";color:var(--copper);font-size:14px}
  .drawer-group[open] summary::after{content:"－"}
  .drawer-group a{display:block;padding:10px 0;font-size:14.5px;color:var(--text-2)}
  .drawer-group a:active{color:var(--copper)}
  .drawer .btn{width:100%;margin-top:22px}
  .hero-points li{padding:12px 0;border-right:0!important;border-bottom:1px solid var(--line-weak);width:100%}
  .hero-points li:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps::before{display:block;top:0;bottom:0;left:21px;right:auto;width:0;border-top:0;border-left:1px dashed var(--line)}
  .step{display:grid;grid-template-columns:44px 1fr;column-gap:20px}
  .step h3{margin-top:6px}
  .step p,.step .step-tag{grid-column:2}
  .step p{margin-top:6px}
  .step .step-tag{margin-top:8px}
  .sym-item{grid-template-columns:40px 1fr;gap:8px 16px;padding:22px 0}
  .sym-item:hover{padding-left:0;padding-right:0}
  .sym-title,.sym-reason,.sym-act{grid-column:2}
  .sym-act{white-space:normal}
  .sym-item .sym-arrow{display:none}
  .rel-grid{grid-template-columns:1fr}
  .rel-grid .rel-item{border-right:0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .data-bar{position:static;margin-top:14px;border-radius:var(--radius)}
}
@media (max-width:480px){
  body{font-size:16px}
  .hero-grid h1{font-size:1.95rem}
  .sec-title{font-size:1.5rem}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .cta-actions{width:100%}
  .logo-text{font-size:17px}
  .data-bar{gap:12px;padding:12px 16px}
  .data-bar .num{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}