/* roulang page: index */
:root{
  --ink:#16332B;
  --deep:#0F231E;
  --celadon:#2E7D6F;
  --accent:#D9601F;
  --brass:#C9A227;
  --bg:#F7F4EF;
  --panel:#FFFFFF;
  --panel-2:#EDE8DF;
  --line:#DCD5C9;
  --text:#16181A;
  --text-2:#5A6058;
  --text-3:#8C9189;
  --err:#B3261E;
  --ok:#2E7D6F;
  --warn:#B8860B;
  --radius:6px;
  --radius-lg:8px;
  --pill:999px;
  --shadow-hover:0 2px 12px rgba(22,51,43,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,'JetBrains Mono','SFMono-Regular',Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(217,96,31,.18)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
.section{padding:112px 0}
.section--paper{background:var(--panel)}
.section--soft{background:var(--panel-2)}
.section--deep{background:var(--deep);color:#fff}
.rule{height:1px;background:var(--line);border:0;margin:0}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.2em;color:var(--celadon);
  text-transform:uppercase;
}
.eyebrow::before{content:'';width:22px;height:1px;background:var(--accent)}
.section--deep .eyebrow{color:rgba(255,255,255,.7)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:48px}
.section-head h2{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(26px,3.4vw,38px);line-height:1.2;letter-spacing:-.01em;
  color:var(--ink);margin-top:16px;max-width:640px;
}
.section--deep .section-head h2{color:#fff}
.section-head p{color:var(--text-2);max-width:420px;font-size:15px}
.section--deep .section-head p{color:rgba(255,255,255,.66)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:2px;
  min-height:44px;
  transition:color 200ms var(--ease),border-color 200ms var(--ease);
}
.text-link::after{content:'→';transition:transform 320ms var(--ease)}
.text-link:hover{color:var(--accent);border-color:var(--accent)}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease),background 200ms var(--ease),backdrop-filter 200ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,244,239,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(22,51,43,.06),0 2px 12px rgba(22,51,43,.07);
}
.nav-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;position:relative;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:20px}
.nav-side a:not(.btn){
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;font-size:15px;color:var(--text-2);
  transition:color 200ms var(--ease);
}
.nav-side a:not(.btn)::after{
  content:'';position:absolute;left:0;right:0;bottom:5px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform 320ms var(--ease);
}
.nav-side a:not(.btn):hover{color:var(--ink)}
.nav-side a:not(.btn):hover::after{transform:scaleX(1)}
.nav-side a.is-active{color:var(--accent)}
.nav-side a.is-active::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:4px 8px}
.brand-mark{
  width:32px;height:32px;border-radius:var(--radius);
  background:var(--ink);display:grid;place-items:center;flex:none;
}
.brand-text{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap}
.brand-text strong{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);letter-spacing:.01em}
.brand-text em{
  font-style:normal;font-size:11px;letter-spacing:.18em;
  color:var(--accent);border:1px solid currentColor;border-radius:3px;
  padding:1px 5px;line-height:1.5;
}
.menu-toggle{
  display:none;position:absolute;left:20px;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:var(--radius);
  align-items:center;justify-content:center;
}
.menu-toggle span{
  display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;
  position:relative;transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.menu-toggle span::before,.menu-toggle span::after{
  content:'';position:absolute;left:0;width:20px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.menu-toggle.is-open span{transform:rotate(45deg)}
.menu-toggle.is-open span::before{transform:rotate(-90deg);top:0}
.menu-toggle.is-open span::after{opacity:0}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:55;
  background:rgba(15,35,30,.46);
  opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.mobile-drawer.is-open{opacity:1;visibility:visible}
.drawer-inner{
  background:var(--bg);
  padding:80px 20px 28px;
  display:flex;flex-direction:column;
  transform:translateY(-14px);
  transition:transform 320ms var(--ease);
  max-height:100%;
  overflow-y:auto;
}
.mobile-drawer.is-open .drawer-inner{transform:none}
.drawer-inner a:not(.btn){
  padding:16px 4px;font-size:17px;color:var(--ink);
  border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(-6px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),color 200ms var(--ease);
}
.mobile-drawer.is-open .drawer-inner a:not(.btn){opacity:1;transform:none}
.mobile-drawer.is-open .drawer-inner a:nth-child(1){transition-delay:60ms}
.mobile-drawer.is-open .drawer-inner a:nth-child(2){transition-delay:100ms}
.mobile-drawer.is-open .drawer-inner a:nth-child(3){transition-delay:140ms}
.mobile-drawer.is-open .drawer-inner a:nth-child(4){transition-delay:180ms}
.mobile-drawer.is-open .drawer-inner a:nth-child(5){transition-delay:220ms}
.drawer-inner a:not(.btn):hover{color:var(--accent)}
.drawer-cta{margin-top:22px;width:100%}
body.nav-locked{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--pill);
  font-size:15px;line-height:1.2;border:1px solid transparent;
  cursor:pointer;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#c0521a;transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);border-radius:var(--radius)}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-sm{padding:11px 22px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero::before{
  content:'';position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.hero::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  padding-top:88px;padding-bottom:64px;
}
.hero h1{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(34px,5.2vw,60px);line-height:1.1;letter-spacing:-.02em;
  margin:22px 0 0;
}
.hero-lead{
  margin-top:24px;max-width:560px;
  font-size:17px;line-height:1.85;color:rgba(255,255,255,.74);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{margin-top:34px;display:grid;gap:12px;max-width:520px}
.hero-points li{
  position:relative;padding-left:20px;font-size:14px;
  color:rgba(255,255,255,.66);
}
.hero-points li::before{
  content:'';position:absolute;left:0;top:12px;
  width:8px;height:8px;border-radius:50%;
  border:1px solid var(--accent);
}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.16);
}
.hero-media figcaption{
  margin-top:10px;font-size:12px;color:rgba(255,255,255,.5);
}
.hero-tag{
  position:absolute;left:16px;bottom:26px;
  background:rgba(15,35,30,.78);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius);
  padding:10px 14px;font-size:12px;letter-spacing:.1em;
  color:rgba(255,255,255,.82);
  font-family:var(--mono);
}
.metric-band{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.14);
  border-bottom:1px solid rgba(255,255,255,.14);
}
.metric{padding:28px 24px}
.metric + .metric{border-left:1px solid rgba(255,255,255,.14)}
.metric b{
  display:block;font-family:var(--mono);font-weight:500;
  font-size:clamp(32px,4vw,46px);line-height:1;
  font-variant-numeric:tabular-nums;color:#fff;
}
.metric b i{font-style:normal;font-size:13px;color:rgba(255,255,255,.56);margin-left:5px}
.metric span{
  display:block;margin-top:10px;font-size:12px;letter-spacing:.18em;
  color:rgba(255,255,255,.6);
}
.metric small{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.4)}
.hero-note{
  position:relative;z-index:2;
  padding:14px 0 0;font-size:12px;color:rgba(255,255,255,.42);
}

/* ---------- service matrix ---------- */
.service-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.svc{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);padding:32px;
  display:flex;flex-direction:column;gap:14px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.svc:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.svc-num{font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--accent);font-variant-numeric:tabular-nums}
.svc h3{font-family:var(--serif);font-size:21px;font-weight:600;color:var(--ink);line-height:1.35}
.svc p{font-size:15px;color:var(--text-2)}
.svc-list{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:grid;gap:8px}
.svc-list li{font-size:13px;color:var(--text-3);padding-left:14px;position:relative}
.svc-list li::before{content:'';position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--celadon)}
.svc-dark{background:var(--deep);border-color:transparent;color:#fff}
.svc-dark h3{color:#fff}
.svc-dark p{color:rgba(255,255,255,.7)}
.svc-dark .svc-list{border-top-color:rgba(255,255,255,.16)}
.svc-dark .svc-list li{color:rgba(255,255,255,.6)}
.svc-dark:hover{border-color:var(--accent)}
.svc-wide{grid-column:span 8}
.svc-narrow{grid-column:span 4}
.svc-full{grid-column:span 12}
.svc-full .svc-split{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:center}
.svc-full img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);background:var(--panel-2)}
.svc-arrow{
  margin-top:18px;font-family:var(--mono);font-size:13px;letter-spacing:.14em;
  color:var(--celadon);display:inline-flex;gap:8px;align-items:center;
  transition:color 200ms var(--ease),gap 200ms var(--ease);
}
.svc:hover .svc-arrow{color:var(--accent);gap:14px}

/* ---------- compare ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
}
.compare-col{padding:36px}
.compare-col + .compare-col{border-left:1px solid var(--line);background:#FCFAF6}
.compare-label{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  color:var(--text-3);display:block;margin-bottom:18px;
}
.compare-label.is-now{color:var(--accent)}
.compare-col h3{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);margin-bottom:14px}
.compare-col p{font-size:15px;color:var(--text-2)}
.compare-list{margin-top:20px;display:grid;gap:10px}
.compare-list li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative}
.compare-list li::before{content:'';position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--text-3)}
.compare-col.is-now .compare-list li::before{background:var(--accent);width:10px}
.bar-block{margin-top:48px;display:grid;gap:26px}
.bar-row{display:grid;grid-template-columns:132px 1fr 108px;gap:20px;align-items:center}
.bar-name{font-size:14px;color:var(--text-2)}
.bar-track{display:grid;gap:8px}
.bar{height:10px;border-radius:var(--pill);background:var(--panel-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:var(--pill)}
.bar i.base{background:#C8C2B6}
.bar i.now{background:var(--accent)}
.bar-value{
  font-family:var(--mono);font-size:14px;color:var(--text);text-align:right;
  font-variant-numeric:tabular-nums;
}
.bar-value em{font-style:normal;color:var(--text-3);display:block;font-size:12px}
.bar-legend{display:flex;gap:22px;margin-top:8px;font-size:12px;color:var(--text-3)}
.bar-legend span{display:inline-flex;align-items:center;gap:8px}
.dot{width:10px;height:10px;border-radius:2px;display:inline-block}
.dot.base{background:#C8C2B6}
.dot.now{background:var(--accent)}
.note{margin-top:22px;font-size:12px;color:var(--text-3);line-height:1.7}

/* ---------- news ---------- */
.cms-news-list{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;
}
.news-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.news-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.news-cover{aspect-ratio:16/10;background:var(--panel-2);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  align-self:flex-start;font-size:11px;letter-spacing:.08em;
  padding:3px 10px;border-radius:var(--pill);
  background:rgba(46,125,111,.1);color:var(--celadon);
  border:1px solid rgba(46,125,111,.24);
}
.news-body h3{
  font-family:var(--serif);font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--mono);font-size:12px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.news-foot span{color:var(--accent);font-family:var(--sans);letter-spacing:.04em}
.cms-empty{
  grid-column:1/-1;min-height:220px;
  border:1px dashed var(--line);border-radius:var(--radius);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background:var(--panel);
}
.cms-empty b{font-weight:500;font-size:16px;color:var(--text-2)}
.cms-empty small{font-size:13px;color:var(--text-3)}
.cms-empty .empty-mark{
  width:46px;height:46px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;
}
.cms-empty .empty-mark::before{content:'';width:16px;height:1px;background:var(--text-3)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:250px 1fr;gap:56px;align-items:start}
.faq-index{position:sticky;top:104px;display:grid;gap:6px}
.faq-index p{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--text-3);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:10px;
}
.faq-index a{
  font-size:14px;color:var(--text-2);padding:9px 0;
  transition:color 200ms var(--ease),padding-left 200ms var(--ease);
}
.faq-index a:hover{color:var(--accent);padding-left:6px}
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line);scroll-margin-top:100px}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;
  font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink);
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-sign{position:relative;width:18px;height:18px;flex:none}
.faq-sign::before,.faq-sign::after{
  content:'';position:absolute;background:var(--accent);border-radius:2px;
  transition:transform 320ms var(--ease),opacity 320ms var(--ease);
}
.faq-sign::before{left:0;top:8px;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a p{padding:0 0 22px;margin:0;font-size:16px;line-height:1.85;color:var(--text-2);max-width:760px}

/* ---------- cta ---------- */
.cta{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.cta::before{
  content:'';position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.15;
}
.cta-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center;
}
.cta-copy h2{
  font-family:var(--serif);font-size:clamp(26px,3.4vw,38px);line-height:1.22;
  margin-top:16px;font-weight:600;
}
.cta-copy p{margin-top:20px;color:rgba(255,255,255,.72);font-size:16px;max-width:460px}
.cta-copy ul{margin-top:26px;display:grid;gap:12px}
.cta-copy li{font-size:14px;color:rgba(255,255,255,.62);padding-left:18px;position:relative}
.cta-copy li::before{content:'';position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--accent)}
.form-card{background:var(--panel);border-radius:var(--radius-lg);padding:36px;color:var(--text);box-shadow:0 2px 12px rgba(15,35,30,.14)}
.form-card h3{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink)}
.form-card > p{margin-top:8px;font-size:13px;color:var(--text-3)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:26px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--text-2)}
.field label i{font-style:normal;color:var(--accent);margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:4px;background:#fff;
  font-size:15px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--celadon);box-shadow:0 0 0 2px rgba(46,125,111,.2);
}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{
  border-color:var(--err);box-shadow:0 0 0 2px rgba(179,38,30,.14);
}
.field .err-text{font-size:12px;color:var(--err);display:none}
.field.has-error .err-text{display:block}
.field .hint{font-size:12px;color:var(--text-3)}
.form-foot{margin-top:26px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-foot small{font-size:12px;color:var(--text-3);flex:1;min-width:200px}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink);color:rgba(255,255,255,.7);padding:76px 0 30px}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:rgba(255,255,255,.18)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:var(--accent);border-color:currentColor}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:320px}
.footer-col h4{
  font-size:13px;letter-spacing:.16em;color:rgba(255,255,255,.46);
  font-weight:500;margin-bottom:18px;
}
.footer-col a{display:block;font-size:14px;padding:7px 0;color:rgba(255,255,255,.74);transition:color 200ms var(--ease),padding-left 200ms var(--ease)}
.footer-col a:hover{color:#fff;padding-left:5px}
.footer-col p{font-size:14px;padding:5px 0;color:rgba(255,255,255,.62)}
.footer-col .mono{font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:12px;color:rgba(255,255,255,.44);
}
.footer-bottom span{font-family:var(--mono);letter-spacing:.04em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 40px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:80px 0}
  .nav-inner{height:64px}
  .nav-side{display:none}
  .menu-toggle{display:flex}
  .brand{justify-self:center}
  .hero-grid{grid-template-columns:1fr;gap:40px;padding-top:60px;padding-bottom:48px}
  .hero-media{order:2}
  .svc-wide,.svc-narrow,.svc-full{grid-column:span 6}
  .svc-full .svc-split{grid-template-columns:1fr;gap:24px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-index{display:none}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .bar-row{grid-template-columns:110px 1fr 92px;gap:14px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .nav-inner{height:60px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .metric-band{grid-template-columns:repeat(2,1fr)}
  .metric{padding:22px 16px}
  .metric:nth-child(odd){border-left:0}
  .metric:nth-child(n+3){border-top:1px solid rgba(255,255,255,.14)}
  .svc-wide,.svc-narrow,.svc-full{grid-column:span 12}
  .compare{grid-template-columns:1fr}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line)}
  .bar-row{grid-template-columns:1fr;gap:8px}
  .bar-value{text-align:left}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:26px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .hero h1{font-size:32px}
  .btn{width:100%}
  .hero-actions .btn,.form-foot .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#16332B;
  --ink-deep:#0F231E;
  --celadon:#2E7D6F;
  --clay:#D9601F;
  --brass:#C9A227;
  --bg:#F7F4EF;
  --panel:#FFFFFF;
  --panel-2:#EDE8DF;
  --line:#DCD5C9;
  --text:#16181A;
  --text-2:#5A6058;
  --text-3:#8C9189;
  --danger:#B3261E;
  --success:#2E7D6F;
  --warn:#B8860B;
  --r-card:6px;
  --r-btn:999px;
  --r-input:4px;
  --shadow-hover:0 2px 12px rgba(22,51,43,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t1:200ms;
  --t2:320ms;
  --maxw:1240px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
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}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.02em;transition:background var(--t1) var(--ease),color var(--t1) var(--ease),transform var(--t2) var(--ease),box-shadow var(--t1) var(--ease)}
.btn-primary{background:var(--clay);color:#fff}
.btn-primary:hover{background:#c1531a;transform:translateY(-1px);box-shadow:0 6px 18px rgba(217,96,31,.24)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:10px 20px;font-size:14px;min-height:40px}
.btn-link{display:inline-flex;align-items:center;gap:6px;min-height:44px;font-size:15px;font-weight:600;color:var(--ink);position:relative}
.btn-link::after{content:"";position:absolute;left:0;bottom:8px;height:2px;width:100%;background:var(--clay);transform:scaleX(0);transform-origin:left;transition:transform var(--t2) var(--ease)}
.btn-link:hover{color:var(--clay)}
.btn-link:hover::after{transform:scaleX(1)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,244,239,.96);border-bottom:1px solid var(--line);transition:box-shadow var(--t2) var(--ease),backdrop-filter var(--t2) var(--ease)}
.site-header.is-scrolled{backdrop-filter:saturate(150%) blur(8px);box-shadow:0 1px 0 rgba(22,51,43,.05),0 6px 18px rgba(22,51,43,.07)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:24px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:20px}
.nav-side a{position:relative;padding:12px 2px;font-size:15px;color:var(--text-2);transition:color var(--t1) var(--ease);white-space:nowrap}
.nav-side a::after{content:"";position:absolute;left:0;bottom:6px;height:2px;width:100%;background:var(--clay);transform:scaleX(0);transform-origin:left;transition:transform var(--t2) var(--ease)}
.nav-side a:hover{color:var(--ink)}
.nav-side a:hover::after{transform:scaleX(1)}
.nav-side a.active{color:var(--clay)}
.nav-side a.active::after{transform:scaleX(1)}
.nav-right .btn::after{display:none}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;min-height:44px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--ink);flex:0 0 auto}
.brand-text{display:inline-flex;align-items:baseline;gap:5px;font-family:var(--font-serif)}
.brand-text strong{font-size:21px;color:var(--ink);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.18em;color:var(--clay);border:1px solid currentColor;border-radius:3px;padding:1px 4px;transform:translateY(-6px)}
.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 10px;border-radius:var(--r-input)}
.menu-toggle span{display:block;height:1.6px;background:var(--ink);border-radius:2px;transition:transform var(--t1) var(--ease),opacity var(--t1) var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.overlay{position:fixed;inset:0;background:rgba(15,35,30,.5);opacity:0;visibility:hidden;transition:opacity var(--t2) var(--ease),visibility var(--t2);z-index:90}
.overlay.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--ink-deep);color:#fff;transform:translateY(-102%);transition:transform var(--t2) var(--ease);padding:16px 0 28px;max-height:100vh;overflow-y:auto}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:6px 20px 18px;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer-head .brand-text strong{color:#fff}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:22px;color:#fff;border-radius:var(--r-input)}
.drawer-nav{display:flex;flex-direction:column;padding:10px 20px 0}
.drawer-nav a{padding:15px 2px;font-size:17px;color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.08);opacity:0;transform:translateY(-8px);transition:opacity var(--t2) var(--ease),transform var(--t2) var(--ease),color var(--t1) var(--ease)}
.drawer-nav a:hover{color:var(--clay)}
.drawer.is-open .drawer-nav a{opacity:1;transform:translateY(0)}
.drawer.is-open .drawer-nav a:nth-child(1){transition-delay:.04s}
.drawer.is-open .drawer-nav a:nth-child(2){transition-delay:.08s}
.drawer.is-open .drawer-nav a:nth-child(3){transition-delay:.12s}
.drawer.is-open .drawer-nav a:nth-child(4){transition-delay:.16s}
.drawer.is-open .drawer-nav a:nth-child(5){transition-delay:.20s}
.drawer.is-open .drawer-nav a:nth-child(6){transition-delay:.24s}
.drawer-cta{margin:24px 20px 0}
.drawer-cta .btn{width:100%}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:linear-gradient(180deg,#FBF9F5 0%,var(--bg) 100%)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:16px 0;line-height:1.6}
.crumb a{color:var(--text-3);transition:color var(--t1) var(--ease)}
.crumb a:hover{color:var(--clay)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--text)}

/* ---------- 文章区 ---------- */
.article-wrap{padding:56px 0 40px}
.col-head{display:flex;align-items:center;gap:12px;margin-bottom:28px}
.col-head::before{content:"";width:22px;height:1px;background:var(--clay);flex:0 0 auto}
.col-head .col-label{font-size:12px;letter-spacing:.2em;color:var(--text-3)}
.col-head a.col-title{font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color var(--t1) var(--ease),border-color var(--t1) var(--ease)}
.col-head a.col-title:hover{color:var(--clay);border-color:var(--clay)}
.article-head{max-width:860px}
.article-head h1{font-size:clamp(30px,4.4vw,50px);line-height:1.16;letter-spacing:-.02em;margin-bottom:22px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-meta .dot{color:var(--line)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--panel-2);color:var(--ink);font-size:12px;letter-spacing:.04em}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);justify-content:center;gap:48px;padding:48px 0 0}
.article-layout.with-toc{grid-template-columns:minmax(0,760px) 220px}
.article-main{max-width:760px;width:100%;margin:0 auto}
.article-layout.with-toc .article-main{margin:0}

/* 正文排版 */
.cms-article-body{font-size:17px;line-height:1.9;color:var(--text);overflow-wrap:break-word;word-break:break-word}
.cms-article-body>*+*{margin-top:1.2em}
.cms-article-body p{margin:1.2em 0 0}
.cms-article-body h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;margin:40px 0 0;padding-left:14px;border-left:3px solid var(--clay)}
.cms-article-body h3{font-family:var(--font-sans);font-size:17px;font-weight:700;line-height:1.6;margin:28px 0 0;color:var(--ink)}
.cms-article-body h4{font-family:var(--font-sans);font-size:16px;font-weight:700;margin:22px 0 0}
.cms-article-body a{color:var(--celadon);border-bottom:1px solid rgba(46,125,111,.35);transition:color var(--t1) var(--ease),border-color var(--t1) var(--ease)}
.cms-article-body a:hover{color:var(--clay);border-color:var(--clay)}
.cms-article-body strong{color:var(--ink)}
.cms-article-body img{width:100%;max-width:100%;border-radius:4px;margin:24px 0 8px;background:var(--panel-2)}
.cms-article-body figure{margin:24px 0 0}
.cms-article-body figcaption,.cms-article-body .caption{font-size:12px;color:var(--text-3);margin-top:8px;line-height:1.7}
.cms-article-body blockquote{margin:26px 0 0;padding:20px 24px;background:var(--panel);border-left:3px solid var(--clay);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--text-2);font-size:16px;line-height:1.85}
.cms-article-body blockquote p{margin:0}
.cms-article-body ul,.cms-article-body ol{margin:20px 0 0;padding-left:1.35em}
.cms-article-body ul{list-style:disc}
.cms-article-body ol{list-style:decimal}
.cms-article-body li{margin:.5em 0;line-height:1.7}
.cms-article-body li::marker{color:var(--celadon)}
.cms-article-body table{width:100%;border-collapse:collapse;margin:26px 0 0;font-size:15px}
.cms-article-body th{background:var(--panel-2);text-align:left;font-weight:700;color:var(--ink)}
.cms-article-body th,.cms-article-body td{padding:12px 14px;border-bottom:1px solid var(--line);line-height:1.65}
.cms-article-body td{font-variant-numeric:tabular-nums}
.cms-article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0 0}
.cms-article-body code{font-family:var(--font-mono);font-size:.92em;background:var(--panel-2);padding:2px 6px;border-radius:3px;color:var(--ink)}
.cms-article-body pre{background:var(--ink-deep);color:#EFEBE3;padding:20px;border-radius:var(--r-card);overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7}

/* 空态 */
.article-empty{padding:64px 32px;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);max-width:760px;margin:0 auto}
.article-empty .ico{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:50%;border:1px solid var(--line);color:var(--text-3);margin-bottom:18px}
.article-empty h2{font-size:20px;margin-bottom:10px}
.article-empty p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* 粘性目录 */
.toc{display:none;position:sticky;top:104px;align-self:start;border-left:1px solid var(--line);padding-left:18px}
.article-layout.with-toc .toc{display:block}
.toc h3{font-family:var(--font-sans);font-size:12px;letter-spacing:.2em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc ol{display:flex;flex-direction:column;gap:10px}
.toc a{display:block;font-size:13.5px;line-height:1.6;color:var(--text-2);transition:color var(--t1) var(--ease),border-color var(--t1) var(--ease);border-left:2px solid transparent;padding-left:10px;margin-left:-11px}
.toc a:hover{color:var(--ink)}
.toc a.is-active{color:var(--clay);border-left-color:var(--clay)}

/* ---------- 相关推荐 ---------- */
.related{padding:80px 0 72px;border-top:1px solid var(--line);background:var(--bg)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.25}
.sec-head .lead{font-size:14px;color:var(--text-2);max-width:420px}
.related-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}
.related-side{display:grid;gap:24px}
.news-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:border-color var(--t2) var(--ease),box-shadow var(--t2) var(--ease),transform var(--t2) var(--ease)}
.news-card:hover{border-color:var(--clay);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.news-card .thumb{overflow:hidden;background:var(--panel-2)}
.news-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--t2) var(--ease)}
.news-card:hover .thumb img{transform:scale(1.03)}
.news-card .body{padding:22px 24px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card-lg .thumb img{aspect-ratio:3/2}
.news-card-lg .body{padding:26px 28px 24px}
.news-card-lg h3{font-size:clamp(20px,2.2vw,24px);line-height:1.35}
.news-card h3{font-size:18px;line-height:1.4}
.news-card h3 a{transition:color var(--t1) var(--ease)}
.news-card h3 a:hover{color:var(--clay)}
.news-card .excerpt{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3)}
.news-card .read{color:var(--ink);font-weight:600;transition:color var(--t1) var(--ease)}
.news-card .read:hover{color:var(--clay)}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink-deep);color:#fff;padding:56px 0}
.cta-band .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px;max-width:560px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.42)}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.74);padding:72px 0 28px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(201,162,39,.55),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:380px}
.footer-col h4{font-family:var(--font-sans);font-size:13px;letter-spacing:.16em;color:#fff;font-weight:600;margin-bottom:18px}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:12px;transition:color var(--t1) var(--ease)}
.footer-col a:hover{color:var(--clay)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:12.5px;color:rgba(255,255,255,.5);font-family:var(--font-mono)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--t2) var(--ease),transform var(--t2) var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 40px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:72px 0}
  .section-tight{padding:52px 0}
  .header-inner{grid-template-columns:44px 1fr 44px;height:60px;gap:8px}
  .menu-toggle{display:inline-flex}
  .nav-side{display:none}
  .brand{justify-self:center}
  .article-layout.with-toc{grid-template-columns:minmax(0,1fr)}
  .article-layout.with-toc .toc{display:none}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .article-wrap{padding:36px 0 24px}
  .article-head h1{font-size:clamp(26px,7vw,34px)}
  .article-layout{padding-top:32px}
  .cms-article-body{font-size:16.5px;line-height:1.85}
  .cms-article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .related{padding:56px 0 48px}
  .news-card-lg .body{padding:20px}
  .cta-band{padding:44px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .brand-text strong{font-size:19px}
  .article-meta{gap:10px;font-size:12.5px}
  .crumb{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
    --ink:#16332B;
    --ink-deep:#0F231E;
    --celadon:#2E7D6F;
    --terra:#D9601F;
    --terra-dark:#B94E14;
    --brass:#C9A227;
    --paper:#F7F4EF;
    --white:#FFFFFF;
    --panel2:#EDE8DF;
    --line:#DCD5C9;
    --text:#16181A;
    --text2:#5A6058;
    --text3:#8C9189;
    --error:#B3261E;
    --success:#2E7D6F;
    --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
    --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    --font-mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
    --r-card:6px;
    --r-btn:999px;
    --r-input:4px;
    --r-img:4px;
    --shadow-hover:0 2px 12px rgba(22,51,43,.08);
    --ease:cubic-bezier(.2,.7,.3,1);
    --container:1240px;
  }

  *,*::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:1.8;
    color:var(--text);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;color:var(--ink);margin:0;letter-spacing:-.01em;}
  h1{font-size:clamp(34px,5.2vw,58px);line-height:1.1;letter-spacing:-.02em;}
  h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2;}
  h3{font-size:21px;line-height:1.35;}
  h4{font-size:17px;line-height:1.4;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px;}

  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
    outline:2px solid var(--terra);
    outline-offset:2px;
    border-radius:2px;
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:14px 28px;
    border:1px solid transparent;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;cursor:pointer;
    transition:background-color 200ms var(--ease),color 200ms var(--ease),
               border-color 200ms var(--ease),transform 200ms var(--ease),
               box-shadow 200ms var(--ease);
  }
  .btn-primary{background:var(--terra);color:#fff;}
  .btn-primary:hover{background:var(--terra-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(217,96,31,.22);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
  .btn-ghost:hover{background:rgba(22,51,43,.06);transform:translateY(-1px);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
  .btn-light:hover{background:rgba(255,255,255,.1);border-color:#fff;}
  .btn-sm{padding:11px 20px;font-size:14px;min-height:40px;}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
  .link-more{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    font-size:15px;font-weight:600;color:var(--terra);padding-bottom:2px;
  }
  .link-more::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
    background:currentColor;transform:scaleX(0);transform-origin:left;
    transition:transform 320ms var(--ease);
  }
  .link-more:hover::after{transform:scaleX(1);}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    transition:box-shadow 200ms var(--ease),background-color 200ms var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,244,239,.88);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    box-shadow:0 1px 10px rgba(22,51,43,.07);
  }
  .header-inner{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    gap:24px;
    min-height:72px;
  }
  .nav-side{display:flex;align-items:center;gap:26px;}
  .nav-left{justify-content:flex-start;}
  .nav-right{justify-content:flex-end;}
  .nav-side a{
    position:relative;
    display:inline-flex;align-items:center;
    min-height:44px;
    font-size:15px;color:var(--text2);
    transition:color 200ms var(--ease);
  }
  .nav-side a::after{
    content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
    background:var(--terra);transform:scaleX(0);transform-origin:left;
    transition:transform 280ms var(--ease);
  }
  .nav-side a:hover{color:var(--ink);}
  .nav-side a:hover::after{transform:scaleX(1);}
  .nav-side a.is-active{color:var(--terra);font-weight:600;}
  .nav-side a.is-active::after{transform:scaleX(1);}
  .brand{
    display:inline-flex;align-items:center;gap:10px;
    justify-self:center;
    min-height:44px;
  }
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:8px;
    background:var(--ink);
    flex:0 0 auto;
  }
  .brand-text{display:inline-flex;align-items:baseline;gap:4px;line-height:1;}
  .brand-text strong{font-family:var(--font-serif);font-size:20px;color:var(--ink);letter-spacing:.01em;}
  .brand-text em{
    font-style:normal;font-size:11px;letter-spacing:.18em;
    color:#fff;background:var(--celadon);border-radius:3px;padding:3px 5px;
  }
  .nav-cta{margin-left:4px;}
  .nav-toggle{
    display:none;
    align-items:center;justify-content:center;
    width:44px;height:44px;
    background:transparent;border:1px solid var(--line);border-radius:var(--r-card);
    cursor:pointer;
  }
  .nav-toggle span{
    position:relative;display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px;
  }
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink);border-radius:2px;
    transition:transform 200ms var(--ease),top 200ms var(--ease);
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .nav-toggle[aria-expanded="true"] span{background:transparent;}
  .nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

  .drawer{
    display:none;
    border-top:1px solid var(--line);
    background:var(--white);
  }
  .drawer.is-open{display:block;}
  .drawer-inner{padding:16px 20px 24px;display:flex;flex-direction:column;gap:2px;}
  .drawer-inner a{
    padding:13px 4px;min-height:44px;
    display:flex;align-items:center;
    font-size:16px;color:var(--text2);
    border-bottom:1px solid var(--line);
  }
  .drawer-inner a.is-active{color:var(--terra);font-weight:600;}
  .drawer-inner .btn{margin-top:16px;width:100%;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,35,30,.42);
    z-index:50;display:none;
  }
  .drawer-mask.is-open{display:block;}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{
    padding:20px 0 0;
    font-size:13px;color:var(--text3);
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  }
  .breadcrumb .sep{color:var(--line);}
  .breadcrumb span[aria-current]{color:var(--text);}

  /* ---------- page hero ---------- */
  .page-hero{
    position:relative;
    margin-top:24px;
    background-image:linear-gradient(100deg,rgba(15,35,30,.94) 0%,rgba(15,35,30,.86) 46%,rgba(15,35,30,.6) 100%),url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
    border-radius:8px;
    overflow:hidden;
  }
  .page-hero-inner{
    display:grid;
    grid-template-columns:7fr 5fr;
    gap:48px;
    align-items:center;
    padding:72px 56px;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12px;letter-spacing:.2em;color:rgba(255,255,255,.72);
    text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--terra);}
  .page-hero h1{color:#fff;margin:18px 0 0;}
  .page-hero .lead{
    margin-top:18px;
    max-width:56ch;
    font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-media{
    border-radius:6px;overflow:hidden;
    border:1px solid rgba(255,255,255,.16);
  }
  .hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .hero-facts{
    display:grid;grid-template-columns:repeat(3,1fr);
    gap:18px;margin-top:34px;
    border-top:1px solid rgba(255,255,255,.16);
    padding-top:22px;
  }
  .hero-facts div span{
    display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
    color:rgba(255,255,255,.55);text-transform:uppercase;
  }
  .hero-facts div strong{
    display:block;margin-top:6px;font-family:var(--font-serif);
    font-size:17px;color:#fff;font-weight:600;
  }

  /* ---------- bands ---------- */
  .band{padding:96px 0;}
  .band-tight{padding:76px 0;}
  .band-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .band-deep{background:var(--ink-deep);color:#fff;}
  .band-deep h2,.band-deep h3{color:#fff;}
  .band-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:24px;margin-bottom:48px;
  }
  .band-head p{max-width:56ch;color:var(--text2);}
  .band-deep .band-head p{color:rgba(255,255,255,.72);}
  .section-label{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12px;letter-spacing:.2em;color:var(--celadon);
    font-family:var(--font-mono);
  }
  .section-label::before{content:"";width:18px;height:1px;background:var(--celadon);}

  /* ---------- service layout ---------- */
  .svc-layout{
    display:grid;
    grid-template-columns:250px 1fr;
    gap:48px;
    align-items:start;
  }
  .svc-aside{
    position:sticky;top:104px;
    border-left:2px solid var(--line);
    padding-left:20px;
  }
  .svc-aside h4{
    font-size:13px;letter-spacing:.16em;color:var(--text3);
    font-family:var(--font-mono);font-weight:600;margin-bottom:16px;
  }
  .svc-aside a{
    display:block;padding:9px 0;font-size:15px;color:var(--text2);
    transition:color 200ms var(--ease),padding-left 200ms var(--ease);
  }
  .svc-aside a:hover{color:var(--terra);padding-left:6px;}
  .svc-aside .aside-note{
    margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
    font-size:13px;line-height:1.7;color:var(--text3);
  }

  .svc-grid{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
  }
  .svc-card{
    grid-column:span 6;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    background:var(--white);
    padding:34px 32px;
    display:flex;flex-direction:column;
    transition:border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .svc-card:hover{border-color:var(--terra);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .svc-card.wide{grid-column:span 7;background:var(--ink-deep);border-color:rgba(255,255,255,.1);}
  .svc-card.narrow{grid-column:span 5;}
  .svc-card.wide:hover{border-color:var(--terra);}
  .svc-num{
    font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
    color:var(--terra);
  }
  .svc-card.wide .svc-num{color:var(--brass);}
  .svc-card h3{margin:14px 0 12px;}
  .svc-card.wide h3{color:#fff;}
  .svc-card .svc-desc{font-size:15.5px;line-height:1.8;color:var(--text2);}
  .svc-card.wide .svc-desc{color:rgba(255,255,255,.76);}
  .scope-list{margin-top:24px;border-top:1px solid var(--line);}
  .svc-card.wide .scope-list{border-top-color:rgba(255,255,255,.14);}
  .scope-list li{
    display:flex;gap:12px;
    padding:12px 0;
    border-bottom:1px solid var(--line);
    font-size:14.5px;color:var(--text2);
  }
  .svc-card.wide .scope-list li{border-bottom-color:rgba(255,255,255,.1);color:rgba(255,255,255,.72);}
  .scope-list li::before{
    content:"";flex:0 0 auto;width:5px;height:5px;margin-top:10px;border-radius:50%;
    background:var(--terra);
  }
  .svc-tag{
    display:inline-flex;align-items:center;
    padding:4px 10px;border-radius:999px;
    font-size:12px;letter-spacing:.06em;
    background:var(--panel2);color:var(--text2);
  }
  .svc-card.wide .svc-tag{background:rgba(255,255,255,.1);color:rgba(255,255,255,.82);}
  .svc-foot{
    margin-top:22px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  }

  /* ---------- process ---------- */
  .process-grid{
    display:grid;grid-template-columns:repeat(4,1fr);
    gap:0;margin-top:8px;
    border-top:1px solid var(--line);
  }
  .process-step{
    padding:28px 24px 4px;
    border-right:1px solid var(--line);
    position:relative;
  }
  .process-step:last-child{border-right:none;}
  .process-step::before{
    content:"";position:absolute;top:-1px;left:0;width:34px;height:2px;background:var(--terra);
  }
  .process-step .step-num{
    font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--text3);
  }
  .process-step h3{margin:12px 0 10px;font-size:19px;}
  .process-step p{font-size:14.5px;color:var(--text2);}

  .intro-split{
    display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
    margin-bottom:56px;
  }
  .intro-split figure{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
  .intro-split figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 320ms var(--ease);}
  .intro-split figure:hover img{transform:scale(1.03);}
  .intro-split figcaption{margin-top:8px;font-size:12px;color:var(--text3);}
  .intro-split h2{margin-bottom:16px;}
  .intro-split p{color:var(--text2);}

  /* ---------- faq ---------- */
  .faq-wrap{display:grid;grid-template-columns:250px 1fr;gap:48px;align-items:start;}
  .faq-index{
    position:sticky;top:104px;
    font-size:13px;color:var(--text3);
  }
  .faq-index h4{
    font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;
    color:var(--text3);margin-bottom:14px;
  }
  .faq-index li{padding:8px 0;border-bottom:1px solid var(--line);}
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;background:transparent;border:0;cursor:pointer;text-align:left;
  }
  .faq-q span.q-text{font-family:var(--font-serif);font-size:19px;color:var(--ink);font-weight:600;}
  .faq-q .plus{
    position:relative;flex:0 0 auto;width:18px;height:18px;
    transition:transform 280ms var(--ease);
  }
  .faq-q .plus::before,.faq-q .plus::after{
    content:"";position:absolute;background:var(--terra);border-radius:2px;
  }
  .faq-q .plus::before{left:0;top:8px;width:18px;height:1.8px;}
  .faq-q .plus::after{top:0;left:8px;width:1.8px;height:18px;}
  .faq-item.is-open .plus{transform:rotate(45deg);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height 320ms var(--ease);
  }
  .faq-a-inner{
    padding:0 0 24px;
    font-size:16px;line-height:1.85;color:var(--text2);
    max-width:72ch;
  }

  /* ---------- cta / form ---------- */
  .cta-panel{
    display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  }
  .cta-copy .section-label{color:var(--brass);}
  .cta-copy .section-label::before{background:var(--brass);}
  .cta-copy p{margin-top:16px;color:rgba(255,255,255,.76);max-width:52ch;}
  .cta-points{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
  .cta-points span{
    font-size:13px;color:rgba(255,255,255,.82);
    border:1px solid rgba(255,255,255,.18);border-radius:999px;
    padding:6px 14px;
  }
  .form-card{
    background:var(--white);border-radius:6px;
    padding:32px;
    border:1px solid var(--line);
  }
  .form-card h3{margin-bottom:6px;}
  .form-card .form-hint{font-size:13px;color:var(--text3);margin-bottom:22px;}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field.full{grid-column:1 / -1;}
  .field label{font-size:13px;color:var(--text2);}
  .field label .req{color:var(--terra);margin-left:2px;}
  .field input,.field select,.field textarea{
    width:100%;
    min-height:48px;
    padding:12px 14px;
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--r-input);
    font-size:15px;
    transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .field textarea{min-height:96px;resize:vertical;line-height:1.7;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(22,51,43,.12);
  }
  .field .err-msg{font-size:12px;color:var(--error);display:none;}
  .field.has-error input,.field.has-error textarea{border-color:var(--error);}
  .field.has-error .err-msg{display:block;}
  .form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px;}
  .form-actions .note{font-size:12.5px;color:var(--text3);}
  .form-status{
    grid-column:1 / -1;display:none;font-size:13.5px;color:var(--success);
    border-left:3px solid var(--success);padding-left:12px;
  }
  .form-status.is-visible{display:block;}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--ink-deep);color:rgba(255,255,255,.72);
    padding:72px 0 32px;
    border-top:1px solid rgba(255,255,255,.1);
  }
  .footer-grid{
    display:grid;grid-template-columns:2.2fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:44px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand .brand{margin-bottom:18px;justify-self:start;}
  .footer-brand .brand-text strong{color:#fff;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);}
  .footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:40ch;}
  .footer-col h4{
    color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;
    font-family:var(--font-sans);letter-spacing:.02em;
  }
  .footer-col a{
    display:block;padding:7px 0;font-size:14px;color:rgba(255,255,255,.66);
    transition:color 200ms var(--ease),transform 200ms var(--ease);
  }
  .footer-col a:hover{color:var(--terra);transform:translateX(3px);}
  .footer-col p{font-size:14px;color:rgba(255,255,255,.62);padding:5px 0;}
  .footer-col .mono{font-size:13px;color:rgba(255,255,255,.5);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
    padding-top:26px;font-size:12.5px;color:rgba(255,255,255,.45);
    font-family:var(--font-mono);letter-spacing:.02em;
  }

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .container{padding:0 32px;}
    .page-hero-inner{padding:60px 40px;gap:36px;}
  }
  @media (max-width:1023px){
    .nav-toggle{display:inline-flex;justify-self:start;}
    .header-inner{grid-template-columns:auto 1fr auto;min-height:60px;}
    .nav-side{display:none;}
    .nav-cta{display:none;}
    .brand{justify-self:center;}
    .header-inner::after{content:"";width:44px;height:1px;}
    .band{padding:72px 0;}
    .band-tight{padding:60px 0;}
    .page-hero-inner{grid-template-columns:1fr;padding:48px 32px;}
    .hero-media{order:-1;}
    .svc-layout{grid-template-columns:1fr;gap:32px;}
    .svc-aside{position:static;border-left:none;border-top:2px solid var(--line);padding:16px 0 0;display:flex;flex-wrap:wrap;gap:8px 20px;}
    .svc-aside h4{width:100%;margin-bottom:6px;}
    .svc-aside .aside-note{width:100%;}
    .faq-wrap{grid-template-columns:1fr;gap:28px;}
    .faq-index{position:static;}
    .faq-index ul{display:flex;flex-wrap:wrap;gap:10px 18px;}
    .faq-index li{border-bottom:none;padding:0;}
    .cta-panel{grid-template-columns:1fr;gap:32px;}
    .intro-split{grid-template-columns:1fr;gap:28px;}
    .process-grid{grid-template-columns:repeat(2,1fr);}
    .process-step:nth-child(2){border-right:none;}
    .process-step:nth-child(1),.process-step:nth-child(2){border-bottom:1px solid var(--line);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:767px){
    body{font-size:16px;}
    .container{padding:0 20px;}
    .band{padding:56px 0;}
    .band-tight{padding:48px 0;}
    .page-hero-inner{padding:36px 22px;}
    .hero-facts{grid-template-columns:1fr;gap:14px;}
    .svc-card,.svc-card.wide,.svc-card.narrow{grid-column:span 12;padding:26px 22px;}
    .process-grid{grid-template-columns:1fr;}
    .process-step{border-right:none;border-bottom:1px solid var(--line);padding:22px 0 18px;}
    .process-step:last-child{border-bottom:none;}
    .form-grid{grid-template-columns:1fr;}
    .form-card{padding:24px 20px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .band-head{margin-bottom:32px;}
  }
  @media (max-width:479px){
    .hero-actions .btn{width:100%;}
    .faq-q span.q-text{font-size:17px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    .reveal{opacity:1 !important;transform:none !important;}
    .intro-split figure:hover img{transform:none;}
  }

/* roulang page: category3 */
:root{
  --ink:#16332B;
  --ink-deep:#0F231E;
  --celadon:#2E7D6F;
  --clay:#D9601F;
  --brass:#C9A227;
  --bg:#F7F4EF;
  --panel:#FFFFFF;
  --panel-2:#EDE8DF;
  --line:#DCD5C9;
  --text:#16181A;
  --text-2:#5A6058;
  --text-3:#8C9189;
  --error:#B3261E;
  --warn:#B8860B;
  --radius:6px;
  --radius-lg:8px;
  --pill:999px;
  --shadow-hover:0 2px 12px rgba(22,51,43,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;margin:0;letter-spacing:-.01em}
p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:2px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{max-width:1240px;margin:0 auto;padding:0 48px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--panel{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--dark{background:var(--ink-deep);color:#F2EFE9}
.section--dark .eyebrow{color:var(--brass)}
.section--dark h2,.section--dark h3{color:#FFFFFF}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.2em;color:var(--celadon);
  margin-bottom:18px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;display:inline-block}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2}
.section-head .lead{max-width:520px;color:var(--text-2);font-size:15.5px}
.section--dark .lead{color:rgba(242,239,233,.72)}
.text-link{
  font-size:14px;color:var(--ink);position:relative;padding-bottom:3px;
  border-bottom:1px solid var(--line);transition:color 200ms var(--ease),border-color 200ms var(--ease);
}
.text-link::after{content:"";position:absolute;left:0;bottom:-1px;width:0;height:2px;background:var(--clay);transition:width 320ms var(--ease)}
.text-link:hover{color:var(--clay);border-color:var(--clay)}
.text-link:hover::after{width:100%}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;font-size:15px;font-weight:500;
  border-radius:var(--pill);transition:transform 200ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--clay);color:#FFFFFF;border:1px solid var(--clay)}
.btn-primary:hover{background:#BC4F14;border-color:#BC4F14;transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#FFFFFF;transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.section--dark .btn-ghost{color:#F2EFE9;border-color:rgba(255,255,255,.45)}
.section--dark .btn-ghost:hover{background:#F2EFE9;color:var(--ink-deep)}
.btn-sm{min-height:38px;padding:9px 20px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(247,244,239,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow 320ms var(--ease),background-color 320ms var(--ease);
}
.site-header.is-scrolled{background:rgba(247,244,239,.86);backdrop-filter:blur(10px);box-shadow:0 1px 14px rgba(22,51,43,.07)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:var(--header-h);gap:24px;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-side a{
  font-size:14.5px;color:var(--text-2);position:relative;padding:6px 0;
  transition:color 200ms var(--ease);white-space:nowrap;
}
.nav-side a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--clay);
  transition:width 320ms var(--ease);
}
.nav-side a:hover{color:var(--ink)}
.nav-side a:hover::after{width:100%}
.nav-side a.is-active{color:var(--clay);font-weight:500}
.nav-side a.is-active::after{width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--ink);border-radius:6px;
}
.brand-text{display:inline-flex;align-items:baseline;gap:2px;font-family:var(--serif)}
.brand-text strong{font-size:19px;letter-spacing:.02em;color:var(--ink)}
.brand-text em{
  font-style:normal;font-size:11px;letter-spacing:.18em;color:#FFFFFF;
  background:var(--celadon);padding:2px 6px;border-radius:3px;transform:translateY(-6px);
}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius);
  align-items:center;justify-content:center;justify-self:start;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--ink);position:relative;transition:background 200ms var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink);
  transition:transform 260ms var(--ease),top 260ms var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

.drawer{
  position:fixed;top:0;left:0;right:0;z-index:95;background:var(--ink-deep);
  padding:84px 20px 32px;transform:translateY(-102%);
  transition:transform 320ms var(--ease);max-height:100vh;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
.drawer a{
  display:block;color:#F2EFE9;font-size:17px;padding:15px 4px;
  border-bottom:1px solid rgba(255,255,255,.1);
  opacity:0;transform:translateY(-8px);
}
.drawer.is-open a{animation:drawerIn 320ms var(--ease) forwards}
.drawer.is-open a:nth-child(1){animation-delay:.04s}
.drawer.is-open a:nth-child(2){animation-delay:.08s}
.drawer.is-open a:nth-child(3){animation-delay:.12s}
.drawer.is-open a:nth-child(4){animation-delay:.16s}
.drawer.is-open a:nth-child(5){animation-delay:.2s}
.drawer.is-open a:nth-child(6){animation-delay:.24s}
.drawer .btn{width:100%;margin-top:22px;opacity:0;animation:drawerIn 320ms var(--ease) .28s forwards}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,35,30,.45);z-index:90;opacity:0;visibility:hidden;
  transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(242,239,233,.6);margin-bottom:26px}
.breadcrumb a{color:rgba(242,239,233,.72);transition:color 200ms var(--ease)}
.breadcrumb a:hover{color:#FFFFFF}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#FFFFFF}

/* 页头 */
.page-hero{
  position:relative;background:var(--ink-deep);color:#F2EFE9;
  padding:64px 0 0;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(15,35,30,.86),rgba(15,35,30,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;opacity:.85;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding-bottom:56px}
.hero-copy h1{
  font-size:clamp(34px,5.2vw,60px);line-height:1.1;letter-spacing:-.02em;color:#FFFFFF;
}
.hero-lead{margin-top:22px;max-width:560px;color:rgba(242,239,233,.78);font-size:16.5px}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(255,255,255,.14)}
.hero-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 320ms var(--ease)}
.hero-figure:hover img{transform:scale(1.03)}

/* 指标看板 */
.metric-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.14);
}
.metric-cell{
  padding:28px 26px 26px;border-right:1px solid rgba(255,255,255,.14);
}
.metric-cell:last-child{border-right:0}
.metric-cell .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,3.4vw,44px);line-height:1;color:#FFFFFF;letter-spacing:-.02em;
}
.metric-cell .num .unit{font-size:16px;color:var(--brass);margin-left:4px}
.metric-cell .cap{margin-top:12px;font-size:12px;letter-spacing:.2em;color:rgba(242,239,233,.62)}
.metric-cell .src{margin-top:10px;font-size:12px;color:rgba(242,239,233,.45);line-height:1.6}

/* 数据表 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
table.data-table{min-width:760px;font-size:14.5px}
table.data-table th,table.data-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
table.data-table thead th{
  background:var(--panel-2);font-size:12.5px;letter-spacing:.12em;color:var(--text-2);
  font-weight:500;white-space:nowrap;border-bottom:1px solid var(--line);
}
table.data-table tbody tr:last-child td{border-bottom:0}
table.data-table tbody tr{transition:background-color 200ms var(--ease)}
table.data-table tbody tr:hover{background:#FBF9F5}
table.data-table td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink)}
table.data-table td.delta{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--celadon)}
.table-note{margin-top:16px;font-size:12.5px;color:var(--text-3)}

/* 对比 */
.compare-stack{display:flex;flex-direction:column;gap:26px}
.compare-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 30px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.compare-card:hover{border-color:var(--clay);box-shadow:var(--shadow-hover)}
.compare-head{display:flex;justify-content:space-between;align-items:baseline;gap:18px;flex-wrap:wrap}
.compare-head h3{font-size:20px}
.compare-head .tag{
  font-size:12px;letter-spacing:.1em;color:var(--celadon);border:1px solid var(--line);
  border-radius:var(--pill);padding:4px 12px;background:var(--bg);
}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:22px;border-top:1px solid var(--line)}
.pair > div{padding:20px 22px 4px 0}
.pair > div + div{border-left:1px solid var(--line);padding-left:22px}
.pair .label{font-size:12px;letter-spacing:.2em;color:var(--text-3)}
.pair .val{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:32px;line-height:1.2;color:var(--text-2);margin-top:8px}
.pair .val.now{color:var(--ink)}
.pair .val.now .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--clay);margin-left:8px;transform:translateY(-4px)}
.bars{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.bar-row{display:grid;grid-template-columns:88px 1fr 72px;align-items:center;gap:14px;font-size:12.5px;color:var(--text-3)}
.bar-track{height:10px;background:var(--panel-2);border-radius:var(--pill);overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:var(--pill);background:var(--celadon);transition:width 320ms var(--ease)}
.bar-fill.is-now{background:var(--clay)}
.bar-row .mono{text-align:right;color:var(--text-2)}

/* 图文 */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius);aspect-ratio:16/10;object-fit:cover;transition:transform 320ms var(--ease)}
.split .figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.split .figure:hover img{transform:scale(1.03)}
.split h3{font-size:22px;margin-bottom:14px}
.split p{color:var(--text-2);margin-bottom:14px}
.rule-list{margin-top:22px;border-top:1px solid var(--line)}
.rule-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.rule-list li .idx{font-family:var(--mono);color:var(--clay);font-size:13px;flex:0 0 auto;padding-top:3px}

/* 注脚 + CTA */
.footnote{
  font-size:12px;line-height:1.9;color:var(--text-3);
  border-top:1px solid var(--line);padding-top:20px;margin-top:48px;
}
.cta-band{background:var(--ink-deep);color:#F2EFE9;padding:88px 0}
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.cta-grid h2{color:#FFFFFF;font-size:clamp(26px,3.4vw,38px);line-height:1.2}
.cta-grid p{margin-top:18px;color:rgba(242,239,233,.75)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.cta-card{
  background:var(--panel);color:var(--text);border-radius:var(--radius);
  padding:30px;border:1px solid var(--line);
}
.cta-card h3{font-size:18px;margin-bottom:16px}
.cta-card ul li{
  display:flex;justify-content:space-between;gap:16px;padding:12px 0;
  border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-2);
}
.cta-card ul li:last-child{border-bottom:0}
.cta-card ul li span:last-child{font-family:var(--mono);color:var(--ink)}

/* 页脚 */
.site-footer{background:var(--panel);border-top:1px solid var(--line);padding:72px 0 0}
.site-footer::before{content:"";display:block;height:1px;background:var(--line);margin:0 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px}
.footer-col h4{font-family:var(--sans);font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:500;margin-bottom:16px}
.footer-col a{display:block;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:color 200ms var(--ease),transform 200ms var(--ease)}
.footer-col a:hover{color:var(--clay);transform:translateX(2px)}
.footer-col p{font-size:14px;color:var(--text-2);margin-bottom:8px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:56px;padding:22px 0 28px;
  font-size:12.5px;color:var(--text-3);
}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 断点 */
@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:76px 0}
  .nav-side{display:none}
  .header-inner{grid-template-columns:44px 1fr 44px;height:60px}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-bottom:44px}
  .metric-band{grid-template-columns:repeat(2,1fr)}
  .metric-cell:nth-child(2){border-right:0}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14)}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section-head{margin-bottom:32px}
  .page-hero{padding-top:40px}
  .pair{grid-template-columns:1fr}
  .pair > div{padding:18px 0 18px 0}
  .pair > div + div{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .bar-row{grid-template-columns:72px 1fr 58px;gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .metric-band{grid-template-columns:1fr 1fr}
  .metric-cell{padding:20px 16px}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#16332B;
  --ink-deep:#0F231E;
  --jade:#2E7D6F;
  --clay:#D9601F;
  --clay-dark:#C2541A;
  --brass:#C9A227;
  --bg:#F7F4EF;
  --panel:#FFFFFF;
  --panel-2:#EDE8DF;
  --line:#DCD5C9;
  --text:#16181A;
  --text-2:#5A6058;
  --text-3:#8C9189;
  --err:#B3261E;
  --ok:#2E7D6F;
  --warn:#B8860B;
  --r-card:6px;
  --r-pill:999px;
  --r-btn:6px;
  --r-input:4px;
  --r-img:4px;
  --shadow-1:0 2px 12px rgba(22,51,43,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:2px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;font-size:15px;line-height:1;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--clay);color:#fff;}
.btn-primary:hover{background:var(--clay-dark);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(22,51,43,.06);}
.btn-ghost:active{transform:scale(.98);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{min-height:40px;padding:10px 20px;font-size:14px;}

.link-more{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;color:var(--jade);min-height:44px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:12px;width:100%;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,239,.96);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:saturate(150%) blur(8px);
  backdrop-filter:saturate(150%) blur(8px);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 0 rgba(22,51,43,.04),0 2px 12px rgba(22,51,43,.08);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;height:72px;
}
.nav-side{display:flex;align-items:center;gap:28px;min-width:0;}
.nav-right{justify-content:flex-end;}
.nav-side a:not(.btn){
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:6px 0;font-size:15px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.nav-side a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:8px;width:0;height:2px;
  background:var(--clay);transition:width .32s var(--ease);
}
.nav-side a:not(.btn):hover{color:var(--ink);}
.nav-side a:not(.btn):hover::after{width:100%;}
.nav-side a.is-active{color:var(--clay);}
.nav-side a.is-active::after{width:26px;}

.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;min-height:44px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:1px solid var(--line);border-radius:6px;background:var(--panel);
}
.brand-text{display:inline-flex;align-items:baseline;gap:5px;font-family:var(--font-serif);}
.brand-text strong{font-size:20px;color:var(--ink);letter-spacing:.02em;}
.brand-text em{
  font-style:normal;font-size:11.5px;line-height:1.5;color:var(--jade);
  border:1px solid var(--jade);border-radius:3px;padding:0 4px;
}

.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:6px;
  background:var(--panel);cursor:pointer;
}
.menu-toggle span{position:relative;display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform .2s var(--ease);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0 0 auto 0;z-index:90;pointer-events:none;}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(15,35,30,.45);opacity:0;
  transition:opacity .24s var(--ease);
}
.drawer-panel{
  position:relative;background:var(--bg);border-bottom:1px solid var(--line);
  padding:18px 20px 26px;transform:translateY(-100%);
  transition:transform .32s var(--ease);
  max-height:100vh;overflow-y:auto;
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-overlay{opacity:1;}
.drawer.is-open .drawer-panel{transform:translateY(0);}
.drawer-panel a:not(.btn){
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text-2);
  opacity:0;transform:translateY(8px);
}
.drawer.is-open .drawer-panel a:not(.btn){animation:drawerIn .32s var(--ease) forwards;}
.drawer.is-open .drawer-panel a:nth-child(1){animation-delay:.04s;}
.drawer.is-open .drawer-panel a:nth-child(2){animation-delay:.08s;}
.drawer.is-open .drawer-panel a:nth-child(3){animation-delay:.12s;}
.drawer.is-open .drawer-panel a:nth-child(4){animation-delay:.16s;}
.drawer.is-open .drawer-panel a:nth-child(5){animation-delay:.2s;}
.drawer-panel a.is-active{color:var(--clay);}
.drawer-panel .btn{width:100%;margin-top:20px;}
@keyframes drawerIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}

/* ---------- 面包屑 ---------- */
.crumb{
  border-bottom:1px solid var(--line);
  background:var(--bg);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--text-3);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"·";color:var(--text-3);}
.crumb a{color:var(--text-3);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--clay);}
.crumb .is-current{color:var(--text);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-dark{background:var(--ink-deep);color:#fff;}
.section-alt{background:var(--panel-2);}
.section-line{border-top:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.2em;color:var(--jade);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;}
.section-dark .eyebrow{color:#8FD3C4;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:36px;margin-bottom:52px;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);color:var(--ink);}
.section-dark .section-head h2{color:#fff;}
.section-head p{max-width:520px;color:var(--text-2);font-size:16px;}
.section-dark .section-head p{color:rgba(255,255,255,.72);}
.section-head-text{display:flex;flex-direction:column;gap:14px;max-width:640px;}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;background:var(--ink-deep);color:#fff;overflow:hidden;
  padding:76px 0 84px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(15,35,30,.94) 0%,rgba(15,35,30,.82) 46%,rgba(15,35,30,.55) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center;}
.page-hero h1{
  font-size:clamp(34px,5.2vw,56px);line-height:1.1;letter-spacing:-.02em;
  margin:20px 0 22px;color:#fff;
}
.page-hero .lede{font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brass);}
.hero-figure{position:relative;}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:8px;border:1px solid rgba(255,255,255,.16);}
.hero-figure figcaption{margin-top:10px;font-size:12px;color:rgba(255,255,255,.55);}

/* ---------- 场景标签 ---------- */
.chip-bar{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:40px;padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--panel);
  font-size:14px;color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--clay);color:var(--ink);transform:translateY(-2px);}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;}
.chip.is-active .dot{background:var(--brass);}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--jade);}

/* ---------- 图文交错 ---------- */
.split-row{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:56px;align-items:center;padding:56px 0;
  border-top:1px solid var(--line);
}
.split-row:last-child{border-bottom:1px solid var(--line);}
.split-row.is-reverse{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
.split-row.is-reverse .split-media{order:2;}
.split-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);transition:transform .32s var(--ease);}
.split-media figure{margin:0;overflow:hidden;border-radius:var(--r-img);background:var(--panel-2);}
.split-media figure:hover img{transform:scale(1.03);}
.split-media figcaption{margin-top:8px;font-size:12px;color:var(--text-3);}
.split-body h3{font-size:22px;color:var(--ink);margin:14px 0 12px;}
.split-body p{color:var(--text-2);font-size:16px;}
.point-list{margin-top:22px;border-top:1px solid var(--line);}
.point-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.point-list li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;
  background:var(--jade);margin-top:11px;
}

/* ---------- 准备清单（细线列表） ---------- */
.prep-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;}
.prep-list{border-top:1px solid var(--line);}
.prep-list li{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.prep-list .num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;color:var(--clay);letter-spacing:.06em;
}
.prep-list h3{font-size:19px;color:var(--ink);margin-bottom:8px;}
.prep-list p{font-size:15px;color:var(--text-2);}

/* ---------- 指标 ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--ink-deep);border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
}
.metric-cell{padding:36px 32px;color:#fff;border-left:1px solid rgba(255,255,255,.14);}
.metric-cell:first-child{border-left:none;}
.metric-cell .value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,4vw,46px);line-height:1.05;color:#fff;letter-spacing:-.02em;
}
.metric-cell .value small{font-size:14px;letter-spacing:0;color:var(--brass);margin-left:6px;}
.metric-cell .label{margin-top:12px;font-size:14px;color:rgba(255,255,255,.78);}
.metric-cell .note{margin-top:10px;font-size:12px;color:rgba(255,255,255,.5);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;}
.faq-index{border-left:2px solid var(--line);padding-left:20px;}
.faq-index p{font-size:12px;letter-spacing:.2em;color:var(--text-3);margin-bottom:14px;}
.faq-index button{
  display:block;width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:9px 0;font-size:14px;color:var(--text-3);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-index button:hover{color:var(--ink);}
.faq-index button.is-active{color:var(--clay);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  width:100%;padding:20px 0;background:none;border:none;cursor:pointer;
  text-align:left;font-size:19px;font-weight:600;color:var(--ink);
  font-family:var(--font-serif);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--clay);}
.faq-item.is-open .faq-q{color:var(--clay);}
.faq-plus{
  position:relative;flex:none;width:22px;height:22px;
  transition:transform .32s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
}
.faq-plus::before{width:14px;height:1.6px;transform:translate(-50%,-50%);}
.faq-plus::after{width:1.6px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a-inner{padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:760px;}

/* ---------- 转化表单 ---------- */
.cta-band{
  position:relative;background:var(--ink-deep);color:#fff;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.24;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
}
.cta-band .container{position:relative;z-index:2;}
.cta-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start;}
.cta-copy h2{font-size:clamp(26px,3.2vw,36px);color:#fff;margin-bottom:18px;}
.cta-copy p{color:rgba(255,255,255,.76);max-width:460px;}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.78);}
.cta-points li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;
  background:var(--brass);margin-top:11px;
}
.form-card{
  background:var(--panel);color:var(--text);border-radius:var(--r-card);
  padding:34px;border:1px solid var(--line);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field-full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--text-2);}
.field .req{color:var(--clay);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:15px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#C6BDB0;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--jade);box-shadow:0 0 0 2px rgba(46,125,111,.18);
}
.field.is-invalid input,.field.is-invalid select{border-color:var(--err);}
.field .error-text{font-size:12px;color:var(--err);}
.field .hint{font-size:12px;color:var(--text-3);}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.form-actions .btn{min-width:180px;}
.form-status{font-size:13px;color:var(--ok);}
.consult-form.is-sent .form-status{color:var(--ok);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);border-top:1px solid var(--line);
  padding:72px 0 32px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(217,96,31,0) 0%,rgba(217,96,31,.5) 22%,rgba(22,51,43,.12) 60%,rgba(22,51,43,0) 100%);
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2fr) minmax(0,2fr) minmax(0,3fr);
  gap:48px;
}
.footer-brand p{margin-top:18px;font-size:14.5px;color:var(--text-2);max-width:380px;}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:16px;}
.footer-col a,.footer-col p{
  display:block;font-size:14.5px;color:var(--text-2);padding:6px 0;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--clay);}
.footer-col .mono{font-size:13.5px;color:var(--text-3);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-size:12.5px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.reveal.is-visible{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:100%;}
}
@media (max-width:1023px){
  .container{padding:0 32px;}
  .section{padding:76px 0;}
  .section-tight{padding:60px 0;}
  .menu-toggle{display:inline-flex;}
  .nav-side{display:none;}
  .header-inner{grid-template-columns:44px minmax(0,1fr) 44px;height:60px;}
  .menu-toggle{grid-column:1;}
  .brand{grid-column:2;}
  .header-inner::after{content:"";grid-column:3;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .split-row,.split-row.is-reverse{grid-template-columns:minmax(0,1fr);gap:28px;}
  .split-row.is-reverse .split-media{order:0;}
  .prep-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .faq-index{display:none;}
  .cta-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .page-hero{padding:60px 0 68px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px;}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metric-cell{border-left:none;border-top:1px solid rgba(255,255,255,.14);padding:26px 22px;}
  .metric-cell:first-child{border-top:none;}
  .metric-cell:nth-child(3){grid-column:1 / -1;}
  .form-grid{grid-template-columns:minmax(0,1fr);}
  .form-card{padding:24px 20px;}
  .split-row{padding:36px 0;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .prep-list li{grid-template-columns:48px minmax(0,1fr);gap:14px;}
}
@media (max-width:479px){
  .page-hero h1{font-size:32px;}
  .hero-actions .btn{width:100%;}
  .metric-strip{grid-template-columns:minmax(0,1fr);}
  .metric-cell:nth-child(3){grid-column:auto;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --ink:#16332B;
  --ink-deep:#0F231E;
  --celadon:#2E7D6F;
  --clay:#D9601F;
  --clay-dark:#BC4E14;
  --brass:#C9A227;
  --bg:#F7F4EF;
  --panel:#FFFFFF;
  --panel-2:#EDE8DF;
  --line:#DCD5C9;
  --text:#16181A;
  --text-2:#5A6058;
  --text-3:#8C9189;
  --error:#B3261E;
  --warn:#B8860B;
  --ok:#2E7D6F;
  --r-card:6px;
  --r-btn:999px;
  --r-input:4px;
  --r-img:4px;
  --shadow-hover:0 2px 12px rgba(22,51,43,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:200ms;
  --t-mid:320ms;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--clay);
  outline-offset:2px;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}

/* ---------- 通用 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--text-3);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;background:var(--clay);
}
.section{padding:104px 0;}
.section--tight{padding:80px 0;}
.section--paper{background:var(--bg);}
.section--white{background:var(--panel);}
.section--deep{background:var(--ink-deep);color:#E8E4DC;}
.section--deep h2,.section--deep h3{color:#F5F2EC;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:52px;
}
.section-head h2{
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.2;
  letter-spacing:-.01em;
  margin-top:14px;
}
.section-head p{
  max-width:520px;
  color:var(--text-2);
  font-size:15.5px;
}
.link-text{
  position:relative;
  display:inline-block;
  color:var(--ink);
  font-size:14.5px;
  padding-bottom:3px;
}
.link-text::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:1px;
  background:var(--clay);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.link-text:hover::after{transform:scaleX(1);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:13px 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
}
.btn-primary{background:var(--clay);color:#fff;border:1px solid var(--clay);}
.btn-primary:hover{background:var(--clay-dark);border-color:var(--clay-dark);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1px solid var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:#F5F2EC;transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.98);}
.btn-light{
  background:transparent;
  color:#F5F2EC;
  border:1px solid rgba(255,255,255,.4);
}
.btn-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,244,239,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(22,51,43,.06),0 2px 10px rgba(22,51,43,.06);
}
.nav-wrap{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:8px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-side a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:14.5px;
  color:var(--text-2);
  transition:color var(--t-fast) var(--ease);
}
.nav-side a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:8px;
  height:2px;
  background:var(--clay);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-side a:hover{color:var(--ink);}
.nav-side a:hover::after{transform:scaleX(1);}
.nav-side a.active{color:var(--clay);}
.nav-side a.active::after{transform:scaleX(1);}
.nav-side a.btn::after{display:none;}
.nav-side a.btn{color:#fff;padding:10px 20px;}
.nav-side a.btn:hover{color:#fff;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:6px 4px;
  justify-self:center;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  border:1px solid var(--line);
  border-radius:50%;
  background:var(--panel);
}
.brand-text{
  display:flex;
  align-items:baseline;
  gap:4px;
  font-family:var(--serif);
  line-height:1;
}
.brand-text strong{font-size:20px;letter-spacing:.01em;color:var(--ink);}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--clay);
  border:1px solid rgba(217,96,31,.4);
  border-radius:3px;
  padding:2px 5px;
  transform:translateY(-2px);
}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  align-items:center;
  justify-content:center;
  background:var(--panel);
}
.nav-toggle span{
  display:block;
  width:18px;height:1.6px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:1.6px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  max-height:0;
  overflow:hidden;
  transition:max-height var(--t-mid) var(--ease);
  background:var(--bg);
  border-bottom:1px solid transparent;
}
.drawer.open{
  max-height:80vh;
  border-bottom-color:var(--line);
  overflow-y:auto;
}
.drawer-inner{padding:16px 0 28px;}
.drawer a{
  display:block;
  padding:14px 4px;
  border-bottom:1px solid var(--line);
  font-size:16px;
  color:var(--ink);
  opacity:0;
  transform:translateY(-6px);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.drawer.open a{opacity:1;transform:none;}
.drawer.open a:nth-child(1){transition-delay:30ms;}
.drawer.open a:nth-child(2){transition-delay:60ms;}
.drawer.open a:nth-child(3){transition-delay:90ms;}
.drawer.open a:nth-child(4){transition-delay:120ms;}
.drawer.open a:nth-child(5){transition-delay:150ms;}
.drawer.open a:nth-child(6){transition-delay:180ms;}
.drawer .drawer-cta{margin-top:20px;border-bottom:0;}
.drawer .btn{width:100%;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background:var(--ink-deep);
  color:#E9E5DD;
  overflow:hidden;
  padding:56px 0 88px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(105deg,rgba(15,35,30,.96) 0%,rgba(15,35,30,.88) 42%,rgba(15,35,30,.62) 100%),
                   url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center right;
  opacity:.9;
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(232,228,220,.62);
  margin-bottom:26px;
}
.crumbs a{transition:color var(--t-fast) var(--ease);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{color:rgba(232,228,220,.35);}
.crumbs .current{color:#F5F2EC;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.page-hero h1{
  font-size:clamp(34px,5.2vw,60px);
  line-height:1.1;
  letter-spacing:-.02em;
  color:#F7F4EF;
  margin:16px 0 20px;
}
.page-hero .lede{
  font-size:17px;
  line-height:1.85;
  color:rgba(233,229,221,.82);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:40px;
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:20px;
}
.hero-facts div{
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid rgba(255,255,255,.14);
}
.hero-facts div:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-facts .k{
  display:block;
  font-family:var(--mono);
  font-size:20px;
  color:#F7F4EF;
  letter-spacing:.02em;
}
.hero-facts .v{font-size:12.5px;color:rgba(233,229,221,.6);letter-spacing:.06em;}
.hero-figure{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:8px;
  padding:14px;
}
.hero-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:6px;
}
.hero-figure figcaption{
  margin-top:10px;
  font-size:12px;
  color:rgba(233,229,221,.55);
  letter-spacing:.04em;
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:250px 1fr;
  gap:64px;
  align-items:start;
}
.faq-index{
  position:sticky;
  top:104px;
  border-top:1px solid var(--line);
  padding-top:22px;
}
.faq-index .eyebrow{margin-bottom:14px;}
.faq-index a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:7px 0 7px 14px;
  border-left:2px solid transparent;
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.faq-index a:hover{color:var(--ink);border-left-color:var(--clay);background:rgba(217,96,31,.05);}
.faq-group + .faq-group{margin-top:56px;}
.faq-group-title{
  font-size:20px;
  letter-spacing:.02em;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:12px;
}
.faq-group-title .idx{
  font-family:var(--mono);
  font-size:12px;
  color:var(--clay);
  letter-spacing:.16em;
}
.faq-item{
  border-bottom:1px solid var(--line);
  scroll-margin-top:104px;
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:24px 0;
  font-family:var(--serif);
  font-size:19px;
  line-height:1.5;
  color:var(--ink);
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--clay);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:22px;height:22px;
  border:1px solid var(--line);
  border-radius:50%;
  transition:transform var(--t-mid) var(--ease),border-color var(--t-fast) var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--clay);
}
.faq-icon::before{left:5px;right:5px;top:50%;height:1.4px;transform:translateY(-50%);}
.faq-icon::after{top:5px;bottom:5px;left:50%;width:1.4px;transform:translateX(-50%);}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--clay);}
.faq-panel{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows var(--t-mid) var(--ease);
}
.faq-item.open .faq-panel{grid-template-rows:1fr;}
.faq-answer{
  overflow:hidden;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-answer p{padding-bottom:24px;max-width:760px;}
.faq-answer ul{padding-bottom:24px;max-width:760px;}
.faq-answer li{
  position:relative;
  padding-left:18px;
  margin-bottom:8px;
}
.faq-answer li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:1px;
  background:var(--celadon);
}

/* ---------- 表单 ---------- */
.ask-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.ask-copy .eyebrow{color:rgba(233,229,221,.6);}
.ask-copy h2{
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.2;
  margin:14px 0 18px;
}
.ask-copy p{color:rgba(233,229,221,.78);font-size:16px;max-width:440px;}
.ask-points{margin-top:32px;border-top:1px solid rgba(255,255,255,.14);}
.ask-points li{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
  font-size:14.5px;
  color:rgba(233,229,221,.8);
}
.ask-points .n{
  font-family:var(--mono);
  font-size:12px;
  color:var(--brass);
  letter-spacing:.14em;
}
.form-card{
  background:var(--panel);
  border-radius:var(--r-card);
  padding:36px;
  box-shadow:0 2px 16px rgba(0,0,0,.14);
}
.form-card h3{font-size:22px;margin-bottom:6px;}
.form-card .form-note{font-size:13.5px;color:var(--text-3);margin-bottom:26px;}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px 20px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em;}
.field .req{color:var(--clay);margin-left:2px;}
.field input,.field textarea,.field select{
  width:100%;
  font:inherit;
  font-size:15.5px;
  color:var(--text);
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:12px 14px;
  min-height:48px;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.field textarea{min-height:132px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--ink);
  box-shadow:0 0 0 2px rgba(22,51,43,.14);
}
.field.has-error input,.field.has-error textarea{
  border-color:var(--error);
  box-shadow:0 0 0 2px rgba(179,38,30,.12);
}
.field .err{
  display:none;
  font-size:12px;
  color:var(--error);
}
.field.has-error .err{display:block;}
.form-actions{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin-top:28px;
  flex-wrap:wrap;
}
.form-actions .hint{font-size:12.5px;color:var(--text-3);}
.form-status{
  display:none;
  margin-top:18px;
  padding:14px 16px;
  border-radius:var(--r-card);
  font-size:14px;
  border:1px solid rgba(46,125,111,.35);
  background:rgba(46,125,111,.08);
  color:var(--ink);
}
.form-status.show{display:block;}
.form-status.is-error{
  border-color:rgba(179,38,30,.35);
  background:rgba(179,38,30,.06);
  color:var(--error);
}

/* ---------- 资讯卡 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:28px;
}
.news-col{display:grid;gap:24px;}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.news-card:hover{
  border-color:var(--clay);
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.news-card .thumb{overflow:hidden;background:var(--panel-2);}
.news-card .thumb img{
  width:100%;
  height:100%;
  border-radius:0;
  object-fit:cover;
  transition:transform var(--t-mid) var(--ease);
}
.news-card:hover .thumb img{transform:scale(1.03);}
.news-card--lead .thumb img{aspect-ratio:16/9;}
.news-card--side{flex-direction:row;align-items:stretch;}
.news-card--side .thumb{flex:0 0 34%;}
.news-card--side .thumb img{height:100%;aspect-ratio:3/2;}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:4px 10px;
  border-radius:999px;
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--celadon);
  background:rgba(46,125,111,.1);
  border:1px solid rgba(46,125,111,.22);
}
.news-body h3{
  font-size:19px;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card--lead .news-body h3{font-size:23px;}
.news-body p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--text-3);
}
.news-foot .read{color:var(--ink);}
.news-card:hover .news-foot .read{color:var(--clay);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-deep);
  color:#E9E5DD;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:320px;height:320px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:50%;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.25;
  color:#F7F4EF;
  margin-bottom:10px;
}
.cta-inner p{color:rgba(233,229,221,.75);font-size:15.5px;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 滚动进入 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--panel-2);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
  color:var(--text-2);
}
.site-footer::before{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line) 18%,var(--line) 82%,transparent);
  margin:-72px 0 72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
}
.footer-brand .brand{margin-bottom:18px;justify-self:start;}
.footer-brand p{font-size:14.5px;line-height:1.8;max-width:380px;}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--ink);
  margin-bottom:16px;
}
.footer-col a,.footer-col p{
  display:block;
  font-size:14.5px;
  color:var(--text-2);
  padding:5px 0;
  transition:color var(--t-fast) var(--ease);
}
.footer-col a:hover{color:var(--clay);}
.footer-bottom{
  margin-top:52px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- 断点 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px;}
  .faq-layout{grid-template-columns:210px 1fr;gap:44px;}
}
@media (max-width:1023px){
  .section{padding:76px 0;}
  .section--tight{padding:64px 0;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;justify-self:start;}
  .nav-wrap{display:flex;justify-content:space-between;align-items:center;height:64px;gap:12px;}
  .brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:2;}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .faq-index{position:static;display:none;}
  .ask-grid{grid-template-columns:1fr;gap:40px;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:40px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:40px 0 64px;}
  .brand-text strong{font-size:17px;}
  .brand-text em{font-size:10px;}
  .hero-facts div{
    flex:1 1 46%;
    margin:0 0 16px 0;
    padding:0 16px 0 0;
    border-right:0;
    border-bottom:1px solid rgba(255,255,255,.12);
    padding-bottom:12px;
  }
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .news-card--side{flex-direction:column;}
  .news-card--side .thumb{flex:none;}
  .news-card--side .thumb img{aspect-ratio:16/9;height:auto;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-q{font-size:17px;padding:20px 0;}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%;}
  .hero-facts div{flex:1 1 100%;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js .reveal{opacity:1;transform:none;}
}