/* roulang page: index */
:root{
  --ink:#1B1A17;
  --tea:#2F4A3E;
  --tea-dark:#263E33;
  --clay:#A8613C;
  --paper:#F7F4EE;
  --paper2:#EFEAE1;
  --card:#FFFFFF;
  --line:#DAD3C7;
  --muted:#6B665C;
  --radius:6px;
  --shadow-soft:0 2px 12px rgba(27,26,23,.06);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:1152px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1200px){.container{padding-left:0;padding-right:0}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,238,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-compact{box-shadow:var(--shadow-soft);background:rgba(247,244,238,.97)}
.header-inner{display:flex;flex-direction:column}
.brandbar{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0;color:var(--ink);font-weight:600;letter-spacing:.02em;font-size:17px;white-space:nowrap}
.logo-mark{display:inline-block;width:2px;height:22px;background:var(--tea);flex:0 0 auto}
.logo-text{display:inline-flex;flex-direction:column;line-height:1.2;min-width:0}
.logo-sub{font-size:10px;font-weight:400;letter-spacing:.2em;color:var(--muted);text-transform:uppercase}
.top-links{display:flex;align-items:center;gap:24px;font-size:14px;color:var(--muted)}
.top-links a{padding:8px 0;border-bottom:1px solid transparent}
.top-links a:hover{color:var(--tea);border-bottom-color:var(--clay)}
.channelbar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:48px;border-top:1px solid var(--line)}
.main-nav{display:flex;align-items:center;gap:28px;font-size:14px;min-width:0}
.main-nav a{position:relative;padding:12px 0;color:var(--muted);white-space:nowrap}
.main-nav a:hover{color:var(--tea)}
.main-nav a.active{color:var(--ink)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--tea)}
.channel-note{font-size:12px;letter-spacing:.06em;color:var(--muted);white-space:nowrap}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:4px;
  background:var(--card);cursor:pointer;transition:border-color .18s ease;
}
.menu-toggle:hover{border-color:var(--tea)}
.menu-toggle:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.hamburger{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.hamburger::before{top:-6px}
.hamburger::after{top:6px}

.site-header.is-compact .header-inner{flex-direction:row;align-items:center;gap:28px;height:60px}
.site-header.is-compact .brandbar{height:60px;flex:0 0 auto;gap:0}
.site-header.is-compact .logo{font-size:15px}
.site-header.is-compact .logo-sub{display:none}
.site-header.is-compact .top-links{display:none}
.site-header.is-compact .channelbar{border-top:0;height:60px;flex:1 1 auto;min-width:0;justify-content:flex-end;gap:16px}
.site-header.is-compact .channel-note{display:none}

@media (max-width:900px){
  .top-links{display:none}
  .channelbar{display:none}
  .menu-toggle{display:inline-flex}
  .site-header.is-compact .header-inner{flex-direction:row;height:56px;gap:0}
  .site-header.is-compact .brandbar{height:56px;width:100%}
  .site-header.is-compact .channelbar{display:none}
}

/* drawer */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  display:none;flex-direction:column;padding:16px 20px 32px;
  overflow-y:auto;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-brand{font-weight:600;letter-spacing:.02em}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--card);
  font-size:22px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;font-size:16px;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-nav a:hover{color:var(--tea)}
.drawer-dl{margin-top:24px;width:100%}
body.no-scroll{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 26px;border-radius:4px;
  font-size:15px;font-weight:500;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .12s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--tea);color:var(--paper)}
.btn-primary:hover{background:var(--tea-dark);box-shadow:inset 0 0 0 1px rgba(247,244,238,.35)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--clay);color:var(--clay)}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--tea);border-bottom:1px solid transparent;transition:border-color .18s ease,color .18s ease}
.link-arrow:hover{border-bottom-color:var(--clay);color:var(--clay)}

/* ---------- tags & misc ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;background:var(--paper2);
  color:var(--ink);font-size:12px;letter-spacing:.06em;
}
.tag-clay{background:rgba(168,97,60,.12);color:var(--clay)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- sections ---------- */
.sec{padding:56px 0;position:relative}
@media (min-width:1024px){.sec{padding:96px 0}}
.sec-alt{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:780px;margin-bottom:28px}
@media (min-width:1024px){.sec-head{margin-bottom:44px}}
.sec-kicker{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--clay);margin-bottom:10px}
.sec-title{
  position:relative;padding-left:16px;
  font-family:var(--font-serif);
  font-size:clamp(23px,2.6vw,32px);line-height:1.34;letter-spacing:-.01em;
  color:var(--ink);margin-bottom:12px;
}
.sec-title::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:2px;background:var(--tea)}
.sec-desc{margin:0;color:var(--muted);font-size:16px;line-height:1.85;max-width:68ch}
.sec-lead{max-width:68ch;color:var(--muted);line-height:1.85}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.10;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:320px;height:320px;
  border:1px solid rgba(47,74,62,.24);border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding-top:48px;padding-bottom:56px}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:56px;padding-top:72px;padding-bottom:88px;align-items:start}
}
.hero-main{min-width:0;animation:riseIn .3s cubic-bezier(.2,.7,.3,1) both}
.hero-side{min-width:0;animation:riseIn .3s cubic-bezier(.2,.7,.3,1) both;animation-delay:.06s}
@keyframes riseIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .hero-main,.hero-side{animation:none}
  html{scroll-behavior:auto}
}
.page-title{
  font-family:var(--font-serif);
  font-size:clamp(30px,4vw,48px);line-height:1.18;letter-spacing:-.01em;
  margin:16px 0 18px;color:var(--ink);
}
.hero-lead{max-width:66ch;color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--muted)}
.hero-points li{display:inline-flex;align-items:center;gap:8px}
.hero-points li::before{content:"";width:6px;height:6px;background:var(--clay);border-radius:50%;flex:0 0 auto}

.brief-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-soft);
}
.brief-cover{position:relative;border-radius:4px;overflow:hidden;background:var(--paper2)}
.brief-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.brief-badge{
  position:absolute;left:12px;top:12px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  background:rgba(247,244,238,.94);color:var(--tea);border:1px solid var(--line);
}
.brief-title{font-family:var(--font-serif);font-size:20px;line-height:1.4;margin:18px 0 12px}
.brief-toc{display:flex;flex-direction:column;gap:0;margin-bottom:20px}
.brief-toc li{
  display:flex;gap:12px;align-items:baseline;
  padding:9px 0;border-bottom:1px solid var(--line);
  font-size:14px;line-height:1.7;color:var(--ink);
}
.brief-toc li:last-child{border-bottom:0}
.brief-toc li::before{
  content:counter(toc,decimal-leading-zero);counter-increment:toc;
  color:var(--clay);font-size:12px;letter-spacing:.06em;flex:0 0 auto;
}
.brief-toc{counter-reset:toc}
.lead-form{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line);padding-top:18px}
.lead-form label{font-size:12px;letter-spacing:.06em;color:var(--muted)}
.lead-form input,.lead-form select,.lead-form textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:4px;background:var(--paper);
  font-size:14px;line-height:1.6;transition:border-color .18s ease,background .18s ease;
}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{
  outline:none;border-color:var(--tea);background:var(--card);
}
.lead-form textarea{resize:vertical;min-height:76px}
.form-note{font-size:12px;color:var(--muted);line-height:1.7}

/* ---------- quick entries ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (min-width:1024px){.quick-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}}
.quick-card{
  display:flex;flex-direction:column;gap:6px;min-width:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 16px 18px;
  transition:border-color .18s cubic-bezier(.2,.7,.3,1),transform .18s cubic-bezier(.2,.7,.3,1);
}
.quick-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.quick-num{font-size:12px;letter-spacing:.06em;color:var(--clay)}
.quick-title{font-size:15px;font-weight:600;line-height:1.5}
.quick-desc{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- KPI ---------- */
.kpi-band{background:var(--tea);color:var(--paper);border-radius:var(--radius);padding:26px 22px}
@media (min-width:1024px){.kpi-band{padding:34px 36px}}
.kpi-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
@media (min-width:900px){.kpi-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}}
.kpi-item{min-width:0;position:relative;padding-left:16px}
.kpi-item::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:rgba(247,244,238,.28)}
@media (max-width:899px){.kpi-item:nth-child(odd)::before{background:rgba(247,244,238,.28)}}
.kpi-num{font-family:var(--font-serif);font-size:30px;line-height:1.1;display:block;color:#fff}
.kpi-label{font-size:13px;color:rgba(247,244,238,.82);margin-top:6px;line-height:1.6}
.kpi-foot{margin-top:22px;font-size:12px;color:rgba(247,244,238,.66)}

/* ---------- service matrix ---------- */
.service-grid{display:flex;flex-wrap:wrap;gap:18px}
.service-card{
  flex:1 1 280px;min-width:0;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;
  transition:border-color .18s cubic-bezier(.2,.7,.3,1),transform .18s cubic-bezier(.2,.7,.3,1);
}
.service-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.service-card--lg{flex:1 1 420px}
.service-card--media{padding:0;overflow:hidden}
.service-card--media .service-media{aspect-ratio:16/9;overflow:hidden;background:var(--paper2)}
.service-card--media .service-media img{width:100%;height:100%;object-fit:cover}
.service-card--media .service-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px}
.service-num{font-size:12px;letter-spacing:.06em;color:var(--clay)}
.service-title{font-family:var(--font-serif);font-size:19px;line-height:1.45;margin-top:6px}
.service-desc{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}
.service-foot{margin-top:auto;padding-top:14px;font-size:13px;color:var(--tea)}
@media (max-width:520px){.service-card,.service-card--lg{flex:1 1 100%}}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:768px){.flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.flow{grid-template-columns:repeat(4,minmax(0,1fr))}}
.flow-step{
  position:relative;min-width:0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 20px 20px;
  border-top:2px solid var(--tea);
  transition:border-color .18s ease,transform .18s ease;
}
.flow-step:hover{transform:translateY(-2px);border-color:var(--tea)}
.flow-num{font-family:var(--font-serif);font-size:24px;color:var(--clay);line-height:1;letter-spacing:.02em}
.flow-title{font-size:16px;font-weight:600;margin-top:12px;line-height:1.5}
.flow-desc{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:18px}
@media (min-width:860px){.compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.compare-card{
  min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;position:relative;
  transition:border-color .18s ease,transform .18s ease;
}
.compare-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.compare-card--accent{border-left:3px solid var(--tea)}
.compare-label{font-size:12px;letter-spacing:.06em;color:var(--clay)}
.compare-title{font-family:var(--font-serif);font-size:20px;line-height:1.45;margin:10px 0 14px}
.compare-list{display:flex;flex-direction:column}
.compare-list li{
  display:flex;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);
  font-size:14px;line-height:1.8;color:var(--muted);
}
.compare-list li:last-child{border-bottom:0}
.compare-list li::before{content:"—";color:var(--clay);flex:0 0 auto}

/* ---------- same-name guide ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
@media (min-width:980px){.split{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:44px;align-items:start}}
.numbered{display:flex;flex-direction:column}
.numbered li{
  display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);min-width:0;
}
.numbered li:first-child{padding-top:0}
.num-badge{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--tea);color:var(--tea);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;letter-spacing:.02em;
}
.num-body{min-width:0}
.num-title{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:4px}
.num-text{font-size:14px;color:var(--muted);line-height:1.8}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;
}
.side-card h3{font-family:var(--font-serif);font-size:19px;line-height:1.45;margin-bottom:14px}
.side-list li{
  font-size:14px;color:var(--muted);line-height:1.8;
  padding:9px 0;border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0}
.side-list strong{color:var(--ink);font-weight:600}

/* ---------- scenes ---------- */
.scene-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:18px}
@media (min-width:640px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.scene-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.scene-card{
  min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .18s ease,transform .18s ease;
}
.scene-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.scene-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper2)}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-body{padding:16px 18px 20px}
.scene-title{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px}
.scene-text{font-size:13px;color:var(--muted);line-height:1.75}

/* ---------- keyword panel ---------- */
.kw-panel{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
@media (min-width:980px){.kw-panel{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:28px;align-items:start}}
.kw-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-width:0;
}
.kw-card h3{font-family:var(--font-serif);font-size:18px;line-height:1.45;margin-bottom:12px}
.kw-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.8;color:var(--muted);
}
.kw-list li:last-child{border-bottom:0}
.kw-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  padding:2px 10px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  background:var(--paper2);color:var(--ink);
}
.kw-chip--stop{background:rgba(168,97,60,.14);color:var(--clay)}
.kw-chip--ok{background:rgba(47,74,62,.12);color:var(--tea)}
.kw-note{font-size:12px;color:var(--muted);line-height:1.75;margin-top:14px}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:minmax(0,1fr);gap:0;border-left:1px solid var(--line);margin-left:6px}
.tl-item{position:relative;padding:0 0 24px 24px;min-width:0}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-5px;top:7px;width:9px;height:9px;
  background:var(--paper);border:2px solid var(--tea);border-radius:50%;
}
.tl-step{font-size:12px;letter-spacing:.06em;color:var(--clay)}
.tl-title{font-size:16px;font-weight:600;line-height:1.5;margin:4px 0 4px}
.tl-text{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- downloads ---------- */
.dl-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:18px}
@media (min-width:760px){.dl-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.dl-card{
  min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;flex-direction:column;gap:10px;
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.dl-card:hover{border-color:var(--tea);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.dl-os{font-size:12px;letter-spacing:.06em;color:var(--clay)}
.dl-name{font-family:var(--font-serif);font-size:20px;line-height:1.4}
.dl-text{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:6px}
.dl-card .btn{width:100%;margin-top:auto}

/* ---------- mistakes ---------- */
.mistake-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:760px){.mistake-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.mistake{
  display:flex;gap:14px;min-width:0;
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--clay);
  border-radius:var(--radius);padding:18px 20px;
  transition:border-color .18s ease,transform .18s ease;
}
.mistake:hover{transform:translateY(-2px);border-color:var(--tea);border-left-color:var(--clay)}
.mistake-num{font-family:var(--font-serif);font-size:18px;color:var(--clay);line-height:1.2;flex:0 0 auto}
.mistake-title{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:4px}
.mistake-text{font-size:13px;color:var(--muted);line-height:1.8}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
@media (min-width:980px){.news-layout{grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);gap:32px;align-items:start}}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.news-list{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
@media (min-width:760px){.news-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
.news-card{
  display:flex;flex-direction:column;gap:8px;min-width:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;
  transition:border-color .18s ease,transform .18s ease;
}
.news-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.news-title{
  font-family:var(--font-serif);font-size:17px;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-text{
  font-size:13px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:10px;font-size:12px;color:var(--muted);letter-spacing:.04em}
.news-cat{padding:2px 10px;border-radius:999px;background:var(--paper2);color:var(--ink)}
.empty-state{
  padding:32px 20px;border:1px dashed var(--line);border-radius:var(--radius);
  color:var(--muted);font-size:14px;text-align:center;background:var(--card);
}
.side-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.side-panel h3{font-family:var(--font-serif);font-size:17px;line-height:1.45;margin-bottom:14px}
.pick-list li{border-bottom:1px solid var(--line);padding:11px 0}
.pick-list li:last-child{border-bottom:0}
.pick-link{font-size:14px;line-height:1.7;color:var(--ink);display:block}
.pick-link:hover{color:var(--tea)}
.pick-date{font-size:12px;color:var(--muted);margin-top:2px}

/* ---------- topic entries ---------- */
.topic-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:760px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.topic-card{
  display:flex;flex-direction:column;gap:8px;min-width:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;
  transition:border-color .18s ease,transform .18s ease;
}
.topic-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.topic-title{font-size:16px;font-weight:600;line-height:1.5}
.topic-text{font-size:13px;color:var(--muted);line-height:1.8}
.topic-card--link{border-left:3px solid var(--tea)}

/* ---------- assurance ---------- */
.assure{
  display:grid;grid-template-columns:minmax(0,1fr);gap:14px;
  background:var(--tea);color:var(--paper);border-radius:var(--radius);padding:26px 22px;
}
@media (min-width:900px){.assure{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding:32px 36px}}
.assure-item{min-width:0;display:flex;gap:12px;align-items:flex-start}
.assure-dot{width:8px;height:8px;border-radius:50%;background:var(--clay);margin-top:9px;flex:0 0 auto}
.assure-title{font-size:15px;font-weight:600;line-height:1.5;color:#fff}
.assure-text{font-size:13px;line-height:1.8;color:rgba(247,244,238,.82);margin-top:2px}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .18s ease}
.faq-item:hover{border-color:var(--tea)}
.faq-item.open{border-color:var(--tea)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:15px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--tea)}
.faq-q:focus-visible{outline:2px solid var(--clay);outline-offset:-3px}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--clay);transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;top:6px;width:14px;height:2px}
.faq-icon::after{left:6px;top:0;width:2px;height:14px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.9;max-width:68ch}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,244,238,.78);padding:48px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px}
@media (min-width:820px){.footer-grid{grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,.8fr));gap:40px}}
.footer-brand{min-width:0}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:600;letter-spacing:.02em;font-size:16px;margin-bottom:12px}
.footer-logo .logo-mark{background:var(--clay)}
.footer-text{font-size:13px;line-height:1.9;color:rgba(247,244,238,.66);max-width:46ch}
.footer-col h4{font-size:13px;letter-spacing:.06em;color:#fff;margin-bottom:12px;font-weight:600}
.footer-col a{display:block;font-size:13px;line-height:1.9;color:rgba(247,244,238,.7);padding:4px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(247,244,238,.14);
  padding-top:18px;padding-bottom:24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:rgba(247,244,238,.5);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.2,.7,.3,1),transform .5s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --ink:#1B1A17;
  --tea:#2F4A3E;
  --tea-dark:#263E33;
  --clay:#A8613C;
  --paper:#F7F4EE;
  --paper2:#EFEAE1;
  --card:#FFFFFF;
  --line:#DAD3C7;
  --muted:#6B665C;
  --radius:6px;
  --shadow-soft:0 2px 12px rgba(27,26,23,.06);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0}
.container{width:100%;max-width:1152px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1200px){.container{padding-left:0;padding-right:0}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,238,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-compact{box-shadow:var(--shadow-soft);background:rgba(247,244,238,.97)}
.header-inner{display:flex;flex-direction:column}
.brandbar{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0;font-weight:600;letter-spacing:.02em;font-size:17px;white-space:nowrap}
.logo:hover{color:var(--tea)}
.logo-mark{display:inline-block;width:2px;height:22px;background:var(--tea);flex:0 0 auto}
.logo-text{display:inline-flex;flex-direction:column;line-height:1.2;min-width:0}
.logo-sub{font-size:10px;font-weight:400;letter-spacing:.2em;color:var(--muted)}
.top-links{display:none;align-items:center;gap:24px;font-size:13px;color:var(--muted)}
.top-links a{padding:8px 0;border-bottom:1px solid transparent}
.top-links a:hover{color:var(--tea);border-bottom-color:var(--clay)}
.channelbar{display:none;border-top:1px solid var(--line);height:48px;align-items:center}
.main-nav{display:flex;align-items:center;gap:28px;font-size:14px;min-width:0;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{position:relative;padding:12px 0;color:var(--muted);white-space:nowrap}
.main-nav a:hover{color:var(--tea)}
.main-nav a.active{color:var(--ink)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--tea)}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:4px;
  background:var(--card);cursor:pointer;transition:border-color .18s ease;
}
.menu-toggle:hover{border-color:var(--tea)}
.menu-toggle:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.hamburger{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.hamburger::before{top:-6px}
.hamburger::after{top:6px}
@media (min-width:1024px){
  .top-links{display:flex}
  .channelbar{display:flex}
  .menu-toggle{display:none}
  .site-header.is-compact .header-inner{flex-direction:row;align-items:center;gap:28px;height:60px}
  .site-header.is-compact .brandbar{height:60px;flex:0 0 auto;gap:0}
  .site-header.is-compact .logo{font-size:15px}
  .site-header.is-compact .logo-sub{display:none}
  .site-header.is-compact .top-links{display:none}
  .site-header.is-compact .channelbar{display:flex;border-top:0;height:60px;flex:1 1 auto;min-width:0;justify-content:flex-end}
  .site-header.is-compact .main-nav{justify-content:flex-end}
}
/* drawer */
.drawer{position:fixed;inset:0;z-index:120;background:var(--paper);display:none;flex-direction:column;padding:16px 20px 32px;overflow-y:auto}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-brand{font-weight:600;letter-spacing:.02em}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--card);font-size:22px;line-height:1;cursor:pointer}
.drawer-close:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{display:flex;align-items:center;min-height:56px;font-size:16px;border-bottom:1px solid var(--line)}
.drawer-nav a:hover{color:var(--tea)}
.drawer-dl{margin-top:24px;display:flex;flex-direction:column;gap:10px}
body.no-scroll{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:4px;
  font-size:15px;font-weight:500;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .12s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--tea);color:var(--paper)}
.btn-primary:hover{background:var(--tea-dark);box-shadow:inset 0 0 0 1px rgba(247,244,238,.35)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--clay);color:var(--clay)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px}
.btn-block{width:100%}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--paper2);color:var(--ink);font-size:12px;letter-spacing:.06em}
.tag-clay{background:rgba(168,97,60,.12);color:var(--clay)}
.tag-tea{background:rgba(47,74,62,.10);color:var(--tea)}

/* ---------- sections ---------- */
.sec{padding:48px 0;position:relative}
.sec-alt{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:1024px){.sec{padding:72px 0}}
.sec-title{
  position:relative;padding-left:16px;font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,30px);line-height:1.34;letter-spacing:-.01em;color:var(--ink);
}
.sec-title::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:2px;background:var(--tea)}
.sec-lead{max-width:68ch;color:var(--muted);margin-top:12px}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:16px 0;border-bottom:1px solid var(--line);background:var(--paper)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--tea)}
.crumb .sep{color:var(--line)}
.crumb .now{color:var(--ink)}

/* ---------- article head ---------- */
.article-head{padding:40px 0 32px;background:var(--paper)}
@media (min-width:1024px){.article-head{padding:56px 0 40px}}
.article-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.article-h1{
  font-family:var(--font-serif);
  font-size:clamp(26px,3.6vw,42px);line-height:1.22;letter-spacing:-.01em;
  max-width:24em;padding-left:16px;position:relative;
}
.article-h1::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:2px;background:var(--tea)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:13px;color:var(--muted)}
.article-summary{
  margin-top:22px;max-width:68ch;color:var(--muted);font-size:16px;line-height:1.9;
  padding:18px 20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
}
.article-figure{margin:32px 0 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.article-figure img{width:100%;aspect-ratio:16/8;object-fit:cover}
.article-figure figcaption{font-size:13px;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line);background:var(--paper2)}

/* ---------- quick points ---------- */
.point-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:768px){.point-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.point-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;min-width:0;
  transition:border-color .18s cubic-bezier(.2,.7,.3,1),transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.point-card:hover{border-color:var(--tea);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.point-num{font-family:var(--font-serif);font-size:13px;letter-spacing:.18em;color:var(--clay)}
.point-title{font-size:17px;font-weight:600;margin:8px 0 6px}
.point-text{font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
@media (min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:48px}}
.article-main{min-width:0}
.article-body{max-width:68ch;font-size:16px;line-height:1.9;color:var(--ink)}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  position:relative;padding-left:14px;font-family:var(--font-serif);
  font-size:clamp(20px,2.2vw,25px);line-height:1.42;margin:2em 0 .8em;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:2px;background:var(--tea)}
.article-body h3{font-size:18px;font-weight:600;margin:1.6em 0 .6em;line-height:1.5}
.article-body h4{font-size:16px;font-weight:600;margin:1.3em 0 .5em}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body li{margin:.4em 0;line-height:1.9}
.article-body li::marker{color:var(--clay)}
.article-body blockquote{margin:1.5em 0;padding:.5em 0 .5em 16px;border-left:3px solid var(--clay);color:var(--muted)}
.article-body a{color:var(--tea);border-bottom:1px solid rgba(47,74,62,.35)}
.article-body a:hover{color:var(--clay);border-bottom-color:var(--clay)}
.article-body img{border-radius:var(--radius);margin:1.5em 0;border:1px solid var(--line)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body code{background:var(--paper2);padding:2px 6px;border-radius:4px;font-size:14px}
.article-body pre{background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius);padding:16px;overflow-x:auto;margin:1.4em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper2);font-weight:600}
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 24px;text-align:center;color:var(--muted);
}
.empty-state p{margin-bottom:16px}

/* ---------- aside ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;min-width:0}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px}
.aside-title{font-size:15px;font-weight:600;letter-spacing:.02em;padding-left:12px;position:relative;margin-bottom:14px}
.aside-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:2px;background:var(--clay)}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  display:flex;gap:10px;font-size:14px;line-height:1.8;color:var(--ink);
  padding:10px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{content:"";flex:0 0 auto;width:12px;height:12px;margin-top:6px;border:1px solid var(--tea);border-radius:2px}
.dl-list{display:flex;flex-direction:column;gap:10px}
.aside-note{font-size:13px;color:var(--muted);line-height:1.8;margin-top:12px}

/* ---------- keyword panel ---------- */
.kw-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;margin-top:28px}
@media (min-width:768px){.kw-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.kw-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;min-width:0}
.kw-card h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.kw-dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.kw-dot-bad{background:var(--clay)}
.kw-dot-good{background:var(--tea)}
.kw-list{list-style:none;margin:0;padding:0}
.kw-list li{font-size:14px;line-height:1.85;color:var(--muted);padding:10px 0;border-bottom:1px solid var(--line)}
.kw-list li:last-child{border-bottom:0;padding-bottom:0}
.kw-list li strong{color:var(--ink);font-weight:600}

/* ---------- related ---------- */
.related-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px}
.related-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.post-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;min-width:0;
  transition:border-color .18s cubic-bezier(.2,.7,.3,1),transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.post-card:hover{border-color:var(--tea);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.post-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.post-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.post-title{font-family:var(--font-serif);font-size:17px;line-height:1.5;font-weight:600}
.post-excerpt{font-size:13px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-top:auto}
.post-empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:32px 22px;text-align:center;color:var(--muted);font-size:14px}

/* ---------- footer cta ---------- */
.footer-cta{
  background:var(--tea);color:var(--paper);border-radius:var(--radius);
  padding:34px 26px;display:grid;grid-template-columns:minmax(0,1fr);gap:20px;align-items:center;
}
@media (min-width:900px){.footer-cta{grid-template-columns:minmax(0,1fr) auto;padding:38px 36px}}
.footer-cta h2{font-family:var(--font-serif);font-size:clamp(20px,2.2vw,26px);line-height:1.4}
.footer-cta p{font-size:14px;color:rgba(247,244,238,.82);margin-top:8px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-paper{background:var(--paper);color:var(--tea);border-color:var(--paper)}
.btn-paper:hover{background:#fff;color:var(--tea-dark)}
.btn-outline-paper{background:transparent;color:var(--paper);border-color:rgba(247,244,238,.55)}
.btn-outline-paper:hover{border-color:var(--paper);background:rgba(247,244,238,.12)}

/* ---------- footer ---------- */
.site-footer{background:var(--paper2);border-top:1px solid var(--line);padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:40px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.02em;font-size:16px}
.footer-text{font-size:13px;color:var(--muted);line-height:1.9;margin-top:14px;max-width:52ch}
.footer-col{display:flex;flex-direction:column;gap:10px;min-width:0}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:4px}
.footer-col a{font-size:14px;color:var(--muted);padding:4px 0;min-height:32px;display:inline-flex;align-items:center}
.footer-col a:hover{color:var(--tea)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --ink:#1B1A17;
  --tea:#2F4A3E;
  --tea-dark:#263E33;
  --clay:#A8613C;
  --paper:#F7F4EE;
  --paper2:#EFEAE1;
  --card:#FFFFFF;
  --line:#DAD3C7;
  --muted:#6B665C;
  --radius:6px;
  --shadow-soft:0 2px 12px rgba(27,26,23,.06);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
body .container{width:100%;max-width:1152px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){body .container{padding-left:32px;padding-right:32px}}
[id]{scroll-margin-top:96px}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(247,244,238,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-compact{box-shadow:var(--shadow-soft);background:rgba(247,244,238,.97)}
.header-inner{display:flex;flex-direction:column}
.brandbar{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0;color:var(--ink);font-weight:600;letter-spacing:.02em;font-size:16px}
.logo-mark{display:inline-block;flex:0 0 auto;width:2px;height:22px;background:var(--tea)}
.logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logo-sub{font-size:10px;font-weight:400;letter-spacing:.2em;color:var(--muted)}
.top-links{display:none;align-items:center;gap:22px;margin-left:auto;font-size:14px}
.top-links a{padding:8px 0;color:var(--muted);border-bottom:1px solid transparent}
.top-links a:hover{color:var(--tea);border-bottom-color:var(--clay)}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--card);cursor:pointer;transition:border-color .18s ease}
.menu-toggle:hover{border-color:var(--tea)}
.menu-toggle:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.hamburger{position:relative;display:block;width:18px;height:2px;background:var(--ink)}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.hamburger::before{top:-6px}
.hamburger::after{top:6px}
.channelbar{display:none}
@media (min-width:1024px){
  .top-links{display:flex}
  .menu-toggle{display:none}
  .channelbar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:48px;border-top:1px solid var(--line);font-size:14px}
  .site-header.is-compact .header-inner{flex-direction:row;align-items:center;gap:32px}
  .site-header.is-compact .brandbar{height:60px;flex:0 0 auto}
  .site-header.is-compact .logo{font-size:15px}
  .site-header.is-compact .logo-sub{display:none}
  .site-header.is-compact .top-links{display:none}
  .site-header.is-compact .channelbar{flex:1 1 auto;justify-content:flex-end;height:60px;border-top:0}
  .site-header.is-compact .channel-note{display:none}
}
.site-header.is-compact .brandbar{height:56px}
.main-nav{display:flex;align-items:center;gap:28px;min-width:0}
.main-nav a{position:relative;padding:12px 0;color:var(--muted);white-space:nowrap}
.main-nav a:hover{color:var(--tea)}
.main-nav a.active{color:var(--ink)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--tea)}
.channel-note{font-size:13px;color:var(--muted);white-space:nowrap}
/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:120;background:var(--paper);display:none;flex-direction:column;padding:16px 20px 32px;overflow-y:auto}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-brand{font-weight:600;letter-spacing:.02em;font-size:15px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--card);font-size:22px;line-height:1;cursor:pointer}
.drawer-close:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{display:flex;align-items:center;min-height:56px;font-size:16px;border-bottom:1px solid var(--line)}
.drawer-nav a:hover{color:var(--tea)}
.drawer-dl{margin-top:24px;width:100%}
body.no-scroll{overflow:hidden}
/* ---------- buttons & tags ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 26px;border-radius:4px;border:1px solid transparent;
  font-size:15px;font-weight:500;letter-spacing:.01em;cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .12s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--tea);color:var(--paper)}
.btn-primary:hover{background:var(--tea-dark);box-shadow:inset 0 0 0 1px rgba(247,244,238,.35)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--clay);color:var(--clay)}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--tea);border-bottom:1px solid transparent}
.link-arrow:hover{color:var(--clay);border-bottom-color:var(--clay)}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--paper2);color:var(--ink);font-size:12px;letter-spacing:.06em}
.tag-clay{background:rgba(168,97,60,.12);color:var(--clay)}
/* ---------- sections ---------- */
.sec{padding:56px 0;position:relative}
@media (min-width:1024px){.sec{padding:92px 0}}
.sec-alt{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-title{
  position:relative;padding-left:16px;font-family:var(--font-serif);
  font-size:clamp(23px,2.6vw,32px);line-height:1.34;letter-spacing:-.01em;margin-bottom:12px;
}
.sec-title::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:2px;background:var(--tea)}
.sec-lead{max-width:68ch;color:var(--muted)}
/* ---------- category head ---------- */
.cat-head{padding:36px 0 44px;border-bottom:1px solid var(--line);background:var(--paper)}
@media (min-width:1024px){.cat-head{padding:48px 0 56px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a:hover{color:var(--tea)}
.crumb .sep{color:var(--line)}
.cat-grid{display:grid;grid-template-columns:1fr;gap:26px;align-items:end}
@media (min-width:900px){.cat-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px}}
.cat-title{
  font-family:var(--font-serif);font-size:clamp(30px,4vw,48px);line-height:1.18;
  letter-spacing:-.01em;margin:0 0 14px;
}
.cat-title span{box-shadow:inset 0 -8px 0 rgba(47,74,62,.14)}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px}
.cat-abstract{color:var(--muted);font-size:15px;line-height:1.9;max-width:46ch}
.cat-abstract strong{color:var(--ink);font-weight:600}
/* ---------- note strip ---------- */
.note-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:28px}
@media (min-width:768px){.note-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}}
.note-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;min-width:0;transition:border-color .18s ease,transform .18s cubic-bezier(.2,.7,.3,1)}
.note-item:hover{border-color:var(--tea);transform:translateY(-2px)}
.note-no{font-family:var(--font-serif);font-size:13px;letter-spacing:.12em;color:var(--clay);display:block;margin-bottom:8px}
.note-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.note-item p{font-size:14px;color:var(--muted);line-height:1.8}
/* ---------- post list ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media (min-width:768px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.post-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:var(--card);border:1px solid var(--line);border-left:2px solid var(--line);
  border-radius:var(--radius);padding:22px 22px 20px;
  transition:border-color .18s ease,transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.post-card:hover{border-color:var(--tea);border-left-color:var(--tea);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.post-no{font-family:var(--font-serif);font-size:13px;letter-spacing:.14em;color:var(--clay)}
.post-title{font-size:18px;line-height:1.5;font-weight:600;font-family:var(--font-serif);word-break:break-word}
.post-desc{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:8px;font-size:12px;color:var(--muted)}
.empty-note{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:28px 22px;color:var(--muted);font-size:15px;margin-top:28px}
/* ---------- topic groups ---------- */
.topic-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:32px}
@media (min-width:900px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
.topic-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-width:0}
.topic-card h3{font-family:var(--font-serif);font-size:19px;margin-bottom:14px}
.topic-card li{
  position:relative;padding:10px 0 10px 20px;font-size:14.5px;color:var(--muted);
  border-bottom:1px solid var(--line);line-height:1.8;
}
.topic-card li:last-child{border-bottom:0}
.topic-card li::before{content:"";position:absolute;left:0;top:19px;width:6px;height:6px;background:var(--clay);border-radius:50%}
/* keyword compare */
.kw-wrap{margin-top:32px;display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:900px){.kw-wrap{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:40px;align-items:start}}
.kw-copy p{color:var(--muted);margin-bottom:14px;max-width:60ch}
.kw-pair{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.kw-pair{grid-template-columns:repeat(2,minmax(0,1fr))}}
.kw-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;min-width:0}
.kw-box h3{font-size:15px;font-weight:600;letter-spacing:.02em;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.kw-box h3 i{display:inline-block;width:8px;height:8px;border-radius:50%;flex:0 0 auto}
.kw-box.bad h3 i{background:var(--clay)}
.kw-box.good h3 i{background:var(--tea)}
.kw-box li{font-size:14px;line-height:1.8;padding:9px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.kw-box li:last-child{border-bottom:0}
/* ---------- checklist ---------- */
.check-wrap{display:grid;grid-template-columns:1fr;gap:24px;margin-top:32px}
@media (min-width:900px){.check-wrap{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start}}
.check-figure{margin:0}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.check-figure figcaption{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7}
.check-list{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:640px){.check-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}}
.check-item{
  display:flex;gap:12px;align-items:flex-start;min-width:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;
  transition:border-color .18s ease;
}
.check-item:hover{border-color:var(--tea)}
.check-item .box{flex:0 0 auto;width:18px;height:18px;border:1.5px solid var(--tea);border-radius:3px;margin-top:4px;position:relative}
.check-item .box::after{content:"";position:absolute;left:4px;top:1px;width:6px;height:10px;border-right:1.5px solid var(--tea);border-bottom:1.5px solid var(--tea);transform:rotate(40deg)}
.check-item span{font-size:14.5px;line-height:1.75;min-width:0}
/* ---------- FAQ ---------- */
.faq-list{margin-top:28px;max-width:840px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:border-color .18s ease}
.faq-item[open]{border-color:var(--tea)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:44px;padding:16px 20px;cursor:pointer;font-weight:600;font-size:16px;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;color:var(--clay);font-size:20px;line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:focus-visible{outline:2px solid var(--clay);outline-offset:-2px}
.faq-body{padding:0 20px 18px;color:var(--muted);font-size:15px;line-height:1.85}
/* ---------- download ---------- */
.dl-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media (min-width:640px){.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.dl-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;gap:12px;min-width:0;transition:border-color .18s ease,transform .18s cubic-bezier(.2,.7,.3,1)}
.dl-card:hover{border-color:var(--tea);transform:translateY(-2px)}
.dl-card h3{font-size:17px;font-weight:600}
.dl-card p{font-size:14px;color:var(--muted);line-height:1.8}
.dl-card .btn{margin-top:auto;width:100%}
/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:30px}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.rel-card{display:flex;flex-direction:column;gap:8px;min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:border-color .18s ease,transform .18s cubic-bezier(.2,.7,.3,1)}
.rel-card:hover{border-color:var(--clay);transform:translateY(-2px)}
.rel-card h3{font-size:16px;line-height:1.55;font-weight:600;font-family:var(--font-serif);word-break:break-word}
.rel-card time{font-size:12px;color:var(--muted);margin-top:auto}
/* ---------- cta strip ---------- */
.cta-strip{background:var(--ink);color:var(--paper);padding:44px 0}
@media (min-width:1024px){.cta-strip{padding:60px 0}}
.cta-inner{display:flex;flex-direction:column;gap:22px;align-items:flex-start}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}}
.cta-strip h2{font-family:var(--font-serif);font-size:clamp(21px,2.4vw,28px);line-height:1.4;color:var(--paper)}
.cta-strip p{color:rgba(247,244,238,.72);font-size:14.5px;margin-top:8px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.cta-strip .btn-ghost{background:transparent;color:var(--paper);border-color:rgba(247,244,238,.4)}
.cta-strip .btn-ghost:hover{border-color:var(--paper);color:var(--paper)}
.cta-strip .btn-primary{background:var(--paper);color:var(--ink)}
.cta-strip .btn-primary:hover{background:#fff}
/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:768px){.footer-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr) minmax(0,.8fr);gap:40px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.02em;font-size:16px;margin-bottom:12px}
.footer-text{font-size:14px;color:var(--muted);line-height:1.85;max-width:52ch}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--ink);margin-bottom:12px;font-weight:600}
.footer-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0}
.footer-col a:hover{color:var(--tea)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:32px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease,transform .3s cubic-bezier(.2,.7,.3,1)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.post-card,.note-item,.dl-card,.rel-card{transition:none}
}