/* =========================================================
   牌乐门中心 · /assets/site.css
   共享外壳与基础组件（header / footer / reset / 通用组件）
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --ink-green:#10302A;
  --ink-green-deep:#081F1B;
  --mist-green:#2F5A50;
  --copper:#B0723C;
  --copper-deep:#8A5326;
  --amber:#F2A93B;
  --paper:#F5EFE4;
  --paper-2:#E7DCCB;
  --ink:#1B1A17;
  --muted:#5B6A63;
  --terracotta:#A63A2C;
  --live:#1F7A5C;

  --font-head:"HarmonyOS Sans SC","Outfit","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --util-h:34px;
  --rail-w:88px;
  --bar-h:58px;

  --radius-leaf:22px 22px 22px 64px;
  --radius-soft:16px;
  --radius-pill:999px;

  --line:rgba(16,48,42,.16);
  --line-strong:rgba(16,48,42,.28);
  --line-paper:rgba(245,239,228,.16);
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  padding-top:var(--util-h);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,svg{max-width:100%}
img{height:auto}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.12;
  margin:0 0 .6em;
  color:inherit;
}
h1{font-size:clamp(40px,6.4vw,88px);line-height:1.02;font-weight:900}
h2{font-size:clamp(26px,3.4vw,46px)}
h3{font-size:clamp(20px,2.1vw,30px)}
h4{font-size:clamp(17px,1.6vw,21px);font-weight:700}

p{margin:0 0 1.1em}
a{color:var(--copper-deep);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ink-green)}

:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
  border-radius:3px;
}

[id]{scroll-margin-top:calc(var(--util-h) + 24px)}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

/* ---------- 跳至主要内容的链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:14px;
  z-index:200;
  display:inline-block;
  padding:10px 20px;
  background:var(--amber);
  color:#241a06;
  font-family:var(--font-head);
  font-weight:800;
  font-size:14px;
  letter-spacing:.06em;
  border-radius:0 0 14px 14px;
  transition:top .2s ease;
}
.skip-link:focus{top:0;color:#241a06}

/* ---------- 通用布局 ---------- */
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 clamp(18px,4vw,56px);
}
.container--narrow{max-width:820px}
.container--wide{max-width:1440px}

.section{padding:clamp(48px,7vw,110px) 0}
.section--tight{padding:clamp(26px,4vw,54px) 0}
.section--ink{background:var(--ink-green);color:var(--paper)}
.section--ink a{color:var(--amber)}
.section--paper2{background:var(--paper-2)}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(18px,2.4vw,32px);
}
.col-1{grid-column:span 1}
.col-2{grid-column:span 2}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-10{grid-column:span 10}
.col-12{grid-column:span 12}

.eyebrow{
  display:inline-block;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--copper-deep);
}
.section--ink .eyebrow{color:var(--amber)}

.type-hero{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(44px,9vw,112px);
  line-height:.98;
  letter-spacing:-.03em;
  margin:0 0 .3em;
}

.lead{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.8;
  color:var(--muted);
  max-width:34em;
}
.section--ink .lead{color:rgba(245,239,228,.78)}

.prose{max-width:34em;font-size:17px;line-height:1.9}
.prose h2,.prose h3{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.2em;margin:0 0 1.2em}
.prose li{margin-bottom:.4em}
.prose blockquote{
  margin:1.6em 0;
  padding:6px 0 6px 20px;
  border-left:3px solid var(--copper);
  color:var(--muted);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-family:var(--font-head);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn--amber{background:var(--amber);color:#241a06}
.btn--amber:hover{background:#ffbf5e;color:#241a06;transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--mist-green);color:var(--ink-green)}
.btn--ghost:hover{background:var(--mist-green);color:var(--paper)}
.btn--onDark{background:transparent;border-color:rgba(245,239,228,.45);color:var(--paper)}
.btn--onDark:hover{background:var(--paper);color:var(--ink-green-deep)}

/* =========================================================
   头部
   ========================================================= */
.site-header{position:relative;z-index:60}

/* 顶部细条 */
.utility-bar{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:72;
  height:var(--util-h);
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 clamp(14px,2.2vw,30px);
  background:var(--ink-green-deep);
  color:rgba(245,239,228,.82);
  font-size:12px;
  letter-spacing:.04em;
  border-bottom:1px solid rgba(176,114,60,.45);
  overflow-x:auto;
  overflow-y:hidden;
  white-space:nowrap;
}
.utility-bar__item{margin:0;display:inline-flex;align-items:center;gap:8px;flex:0 0 auto}
.utility-bar__item.mono{color:var(--amber);letter-spacing:.08em}
.utility-bar__sep{width:1px;height:14px;background:rgba(245,239,228,.28);flex:0 0 auto}
.utility-bar__note{margin:0 0 0 auto;color:rgba(245,239,228,.58);flex:0 0 auto}

.utility-actions{
  list-style:none;
  display:flex;
  gap:6px;
  margin:0;
  padding:0;
  flex:0 0 auto;
}
.utility-actions__link{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  border:1px solid rgba(176,114,60,.6);
  border-radius:var(--radius-pill);
  color:var(--paper);
  font-size:12px;
  letter-spacing:.06em;
  text-decoration:none;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.utility-actions__link:hover{background:var(--copper);border-color:var(--copper);color:#fff}

.scroll-progress{
  position:fixed;
  top:calc(var(--util-h) - 2px);
  left:0;
  width:0;
  height:2px;
  background:var(--amber);
  z-index:74;
  pointer-events:none;
}

/* 桌面左侧轨道 */
.rail{
  position:fixed;
  top:var(--util-h);
  left:0;
  bottom:0;
  width:var(--rail-w);
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:18px 0 20px;
  background:var(--ink-green);
  color:var(--paper);
}
.rail-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding:4px 0 16px;
  color:var(--paper);
  text-decoration:none;
}
.rail-brand__mark{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  border:1px solid var(--copper);
  border-radius:15px 5px 15px 5px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--amber);
}
.rail-brand__name{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-head);
  font-weight:800;
  font-size:14px;
  letter-spacing:.18em;
  color:var(--paper);
}
.rail-nav{
  flex:1 1 auto;
  width:100%;
  margin-top:6px;
  padding:6px 0;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:thin;
}
.rail-nav__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
}
.rail-nav__item{width:100%}
.rail-nav__link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:14px 0;
  color:rgba(245,239,228,.7);
  font-family:var(--font-head);
  font-weight:600;
  text-decoration:none;
  transition:color .24s ease,background-color .24s ease;
}
.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  bottom:10px;
  width:3px;
  background:var(--copper);
  transform:scaleY(0);
  transform-origin:center;
  transition:transform .24s ease;
}
.rail-nav__link:hover{color:var(--paper);background:rgba(245,239,228,.07)}
.rail-nav__link[aria-current="page"]{color:var(--amber);background:rgba(242,169,59,.1)}
.rail-nav__link[aria-current="page"]::before{transform:scaleY(1)}
.rail-nav__index{font-size:10px;letter-spacing:.12em;color:var(--copper)}
.rail-nav__label{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-size:14px;
  line-height:1;
  letter-spacing:.16em;
}
.rail-foot{
  padding-top:14px;
  display:flex;
  justify-content:center;
}
.rail-cta{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  padding:16px 10px;
  background:var(--amber);
  color:#241a06;
  border-radius:var(--radius-pill);
  font-family:var(--font-head);
  font-weight:800;
  font-size:14px;
  letter-spacing:.2em;
  text-decoration:none;
  transition:background-color .2s ease,transform .2s ease;
}
.rail-cta:hover{background:#ffc163;color:#241a06;transform:translateY(-2px)}

/* 移动端顶栏（桌面隐藏） */
.header-bar{
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  height:var(--bar-h);
  padding:0 16px;
  background:var(--ink-green);
  color:var(--paper);
  border-bottom:1px solid rgba(176,114,60,.45);
}
.header-bar__brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--paper);
  text-decoration:none;
}
.header-bar__mark{
  display:grid;
  place-items:center;
  width:32px;
  height:32px;
  border:1px solid var(--copper);
  border-radius:12px 4px 12px 4px;
  font-size:11px;
  color:var(--amber);
}
.header-bar__text{
  display:flex;
  flex-direction:column;
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  letter-spacing:.06em;
  line-height:1.25;
}
.header-bar__sub{
  font-family:var(--font-body);
  font-weight:400;
  font-size:11px;
  letter-spacing:.04em;
  color:rgba(245,239,228,.62);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:8px 14px;
  background:transparent;
  border:1px solid rgba(245,239,228,.45);
  border-radius:var(--radius-pill);
  color:var(--paper);
  font:inherit;
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--amber);background:rgba(242,169,59,.12)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--amber);transition:transform .24s ease,opacity .24s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* 遮罩与抽屉 */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(8,31,27,.58);
  opacity:0;
  visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
}
.nav-scrim[data-open]{opacity:1;visibility:visible}

.site-drawer{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:90;
  width:min(360px,86vw);
  display:flex;
  flex-direction:column;
  padding:20px 22px 26px;
  background:var(--ink-green-deep);
  color:var(--paper);
  border-right:1px solid rgba(176,114,60,.5);
  overflow-y:auto;
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .28s ease,visibility .28s ease;
}
.site-drawer[data-open]{transform:none;visibility:visible}
.site-drawer__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line-paper);
}
.site-drawer__brand{
  margin:0;
  font-family:var(--font-head);
  font-weight:800;
  font-size:16px;
  letter-spacing:.08em;
}
.site-drawer__close{
  padding:6px 14px;
  background:transparent;
  border:1px solid rgba(245,239,228,.35);
  border-radius:var(--radius-pill);
  color:var(--paper);
  font:inherit;
  font-size:13px;
  cursor:pointer;
}
.site-drawer__close:hover{border-color:var(--amber);color:var(--amber)}

.drawer-nav{flex:1 1 auto;padding:14px 0}
.drawer-nav__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
}
.drawer-nav__item{width:100%}
.drawer-nav__link{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:13px 6px;
  border-bottom:1px solid rgba(245,239,228,.08);
  color:rgba(245,239,228,.82);
  font-family:var(--font-head);
  font-weight:700;
  font-size:20px;
  text-decoration:none;
  transition:color .2s ease,padding-left .2s ease,background-color .2s ease;
}
.drawer-nav__link:hover{color:var(--paper);padding-left:14px;background:rgba(245,239,228,.05)}
.drawer-nav__link[aria-current="page"]{color:var(--amber)}
.drawer-nav__index{font-size:11px;letter-spacing:.12em;color:var(--copper)}
.drawer-nav__label{letter-spacing:.04em}

.site-drawer__foot{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding-top:18px;
  border-top:1px solid var(--line-paper);
}
.drawer-actions{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
  padding:0;
}
.drawer-actions__link{
  display:inline-flex;
  padding:6px 13px;
  border:1px solid rgba(176,114,60,.6);
  border-radius:var(--radius-pill);
  color:var(--paper);
  font-size:13px;
  text-decoration:none;
  transition:background-color .2s ease,color .2s ease;
}
.drawer-actions__link:hover{background:var(--copper);color:#fff}
.drawer-cta{justify-content:center}
.site-drawer__note{
  margin:0;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(245,239,228,.6);
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,130px);
  background:var(--ink-green);
  color:rgba(245,239,228,.86);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:40%;
  height:3px;
  background:var(--copper);
}
.footer__inner{padding:clamp(44px,6vw,84px) 0 clamp(26px,3vw,40px)}
.footer__grid{
  display:grid;
  grid-template-columns:1.6fr repeat(3,minmax(130px,1fr));
  gap:clamp(24px,3vw,48px);
}
.footer__brand{
  display:flex;
  flex-direction:column;
  gap:10px;
  max-width:24em;
}
.footer__mark{
  margin:0;
  font-family:var(--font-head);
  font-weight:800;
  font-size:21px;
  letter-spacing:.06em;
  color:var(--paper);
}
.footer__line{margin:0;font-size:15px;line-height:1.75;color:rgba(245,239,228,.76)}
.footer__meta{margin:0;font-size:12px;letter-spacing:.08em;color:var(--copper)}

.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col__title{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--amber);
}
.footer-col__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:9px;
}
.footer-col__link{
  align-self:flex-start;
  color:rgba(245,239,228,.85);
  font-size:15px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-col__link:hover{color:var(--paper);border-color:var(--copper)}

.footer__contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,2.4vw,36px);
  margin-top:clamp(30px,4vw,56px);
  padding-top:clamp(22px,3vw,34px);
  border-top:1px solid var(--line-paper);
}
.footer-contact__item{display:flex;flex-direction:column;gap:6px}
.footer-contact__label{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--copper);
}
.footer-contact__value{
  margin:0;
  font-size:15px;
  line-height:1.7;
  color:var(--paper);
  word-break:break-word;
}
.footer__note{
  margin:14px 0 0;
  max-width:52em;
  font-size:13px;
  line-height:1.8;
  color:rgba(245,239,228,.6);
}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:clamp(24px,3vw,40px);
  padding-top:20px;
  border-top:1px solid var(--line-paper);
}
.footer__copy{margin:0;font-size:12.5px;color:rgba(245,239,228,.62)}
.footer__legal-links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin:0;
  padding:0;
}
.footer__legal-link{
  font-size:12.5px;
  color:rgba(245,239,228,.75);
  text-decoration:none;
  border-bottom:1px solid rgba(176,114,60,.5);
  transition:color .2s ease,border-color .2s ease;
}
.footer__legal-link:hover{color:var(--paper);border-color:var(--amber)}

/* =========================================================
   基础组件
   ========================================================= */

/* 卡片 */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:clamp(18px,2.4vw,30px);
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-leaf);
}
.card--index{background:var(--paper);border-color:rgba(176,114,60,.42);border-radius:18px 18px 18px 44px}
.card--compare{background:#fff}
.card--doc{background:var(--ink-green);color:var(--paper);border-color:transparent}
.card__index{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--copper-deep);
}
.card--doc .card__index{color:var(--amber)}
.card__title{
  margin:0;
  font-family:var(--font-head);
  font-weight:800;
  font-size:20px;
  letter-spacing:-.01em;
  line-height:1.3;
}
.card__body{margin:0;font-size:15px;line-height:1.8;color:var(--muted)}
.card--doc .card__body{color:rgba(245,239,228,.76)}
.card__meta{
  margin:0;
  margin-top:auto;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--muted);
}
.card--doc .card__meta{color:rgba(245,239,228,.62)}

/* 表格 */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px 18px 18px 40px;
}
.table{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.7;
}
.table caption{
  caption-side:top;
  padding:14px 18px 8px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--copper-deep);
}
.table th,.table td{
  padding:12px 18px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
.table thead th{
  position:sticky;
  top:var(--util-h);
  z-index:2;
  background:var(--ink-green);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.12em;
  white-space:nowrap;
}
.table tbody th{font-family:var(--font-head);font-weight:700;background:var(--paper-2)}
.table tbody tr:last-child th,.table tbody tr:last-child td{border-bottom:0}
.table td.mono{color:var(--ink-green)}

/* 状态标签 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  border:1px solid currentColor;
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.6;
  white-space:nowrap;
}
.badge--live{color:var(--live)}
.badge--warn{color:var(--terracotta)}
.badge--copper{color:var(--copper-deep)}
.badge--muted{color:var(--muted)}

/* 标签页 */
.tabs{display:flex;flex-direction:column;gap:22px}
.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.tab{
  appearance:none;
  padding:9px 17px;
  background:transparent;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  color:var(--muted);
  font:inherit;
  font-family:var(--font-head);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{color:var(--ink-green);background:var(--paper-2)}
.tab[aria-selected="true"]{background:var(--ink-green);border-color:var(--ink-green);color:var(--paper)}
.tabs__panel{padding-top:2px}
.tabs__panel[hidden]{display:none}

/* 折叠块 */
.collapse{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px 16px 16px 32px;
  overflow:hidden;
}
.collapse + .collapse{margin-top:12px}
.collapse__trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  background:var(--paper-2);
  border:0;
  font:inherit;
  font-family:var(--font-head);
  font-weight:700;
  font-size:16px;
  color:var(--ink);
  text-align:left;
  cursor:pointer;
  transition:background-color .2s ease;
}
.collapse__trigger:hover{background:#dfd2bd}
.collapse__trigger::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:18px;
  color:var(--copper-deep);
  transition:transform .24s ease;
}
.collapse__trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.collapse__panel{
  padding:16px 20px;
  border-top:1px solid var(--line);
  font-size:15.5px;
  line-height:1.85;
}
.collapse__panel[hidden]{display:none}

/* 时间轴 */
.timeline{
  position:relative;
  list-style:none;
  margin:0;
  padding:0 0 0 26px;
  display:flex;
  flex-direction:column;
  gap:22px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(var(--copper),rgba(176,114,60,.15));
}
.timeline__item{position:relative}
.timeline__item::before{
  content:"";
  position:absolute;
  left:-26px;
  top:7px;
  width:15px;
  height:15px;
  border:2px solid var(--copper);
  border-radius:50%;
  background:var(--paper);
}
.timeline__time{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--copper-deep);
}
.timeline--horizontal{
  flex-direction:row;
  gap:clamp(20px,3vw,40px);
  padding:26px 0 0;
  overflow-x:auto;
}
.timeline--horizontal::before{left:0;right:0;top:7px;bottom:auto;width:auto;height:1px;background:linear-gradient(90deg,var(--copper),rgba(176,114,60,.15))}
.timeline--horizontal .timeline__item{min-width:180px}
.timeline--horizontal .timeline__item::before{left:0;top:-26px}

/* 图文容器（页面阶段在 .figure__frame 内放图片） */
.figure{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin:0;
}
.figure__frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:4/3;
  border-radius:var(--radius-leaf);
  background:
    linear-gradient(140deg,rgba(176,114,60,.18),rgba(245,239,228,0) 60%),
    repeating-linear-gradient(135deg,rgba(47,90,80,.1) 0 8px,rgba(47,90,80,0) 8px 18px),
    var(--paper-2);
}
.figure__frame img,
.figure__frame svg,
.figure__frame picture{display:block;width:100%;height:100%;object-fit:cover}
.figure__cap{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.figure--wide .figure__frame{aspect-ratio:16/9}
.figure--macro .figure__frame{aspect-ratio:1/1;border-radius:120px 24px 120px 24px}
.figure--tilt .figure__frame{transform:rotate(-1.4deg)}
.figure--tilt .figure__cap{padding-left:8px}

/* 面包屑 */
.breadcrumb{padding:20px 0 0}
.breadcrumb__list{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0;
  padding:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb__item{display:flex;align-items:center;gap:10px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--copper)}
.breadcrumb__link{color:var(--muted);text-decoration:none}
.breadcrumb__link:hover{color:var(--copper-deep)}

/* ---------- 显现动效 ---------- */
html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s ease,transform .32s ease;
}
html.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */

/* 桌面：轨道占位 */
@media (min-width:901px){
  body{padding-left:var(--rail-w)}
}
@media (min-width:901px) and (max-height:880px){
  .rail{padding-top:12px}
  .rail-nav__link{padding:10px 0;gap:8px}
  .rail-nav__label{font-size:12.5px;letter-spacing:.1em}
  .rail-brand{padding-bottom:8px}
  .rail-brand__name{font-size:13px}
}

/* 平板与手机 */
@media (max-width:900px){
  :root{--rail-w:0px}
  .rail{display:none}
  body{padding-top:calc(var(--util-h) + var(--bar-h))}
  .utility-bar__note{display:none}
  .header-bar{
    display:flex;
    position:fixed;
    top:var(--util-h);
    left:0;
    right:0;
    z-index:72;
  }
  .scroll-progress{top:calc(var(--util-h) + var(--bar-h) - 2px)}
  .table thead th{top:calc(var(--util-h) + var(--bar-h))}
  html.is-nav-open{overflow:hidden}
}

@media (max-width:1024px){
  .utility-actions{display:none}
  .utility-bar__note{margin-left:auto}
}

@media (max-width:760px){
  body{font-size:16px;line-height:1.8}
  .grid-12{grid-template-columns:1fr}
  .col-1,.col-2,.col-3,.col-4,.col-5,.col-6,
  .col-7,.col-8,.col-9,.col-10,.col-12{grid-column:1 / -1}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer__brand{grid-column:1 / -1;max-width:none}
  .footer__contact{grid-template-columns:1fr}
  .footer__legal{flex-direction:column;align-items:flex-start}
  .timeline--horizontal{flex-direction:column;overflow:visible;padding:0 0 0 26px}
  .timeline--horizontal::before{
    left:7px;right:auto;top:8px;bottom:8px;width:1px;height:auto;
    background:linear-gradient(var(--copper),rgba(176,114,60,.15));
  }
  .timeline--horizontal .timeline__item{min-width:0}
  .timeline--horizontal .timeline__item::before{left:-26px;top:7px}
}

@media (max-width:560px){
  .utility-bar{gap:10px;font-size:11.5px}
  .utility-bar__item:not(.mono){display:none}
  .footer__grid{grid-template-columns:1fr}
  .header-bar__sub{display:none}
}

/* 表格堆叠卡片（需 .table--stack 与 td[data-label]） */
@media (max-width:700px){
  .table--stack{min-width:0}
  .table--stack thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .table--stack tbody tr{
    display:block;
    padding:14px 16px;
    border-bottom:1px solid var(--line);
  }
  .table--stack tbody tr:last-child{border-bottom:0}
  .table--stack th,.table--stack td{
    display:block;
    padding:4px 0;
    border:0;
    background:transparent;
  }
  .table--stack tbody th{
    font-size:16px;
    color:var(--ink-green);
    padding-bottom:8px;
  }
  .table--stack td[data-label]::before{
    content:attr(data-label);
    display:block;
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.16em;
    color:var(--copper-deep);
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.has-js [data-reveal]{opacity:1;transform:none}
  .figure--tilt .figure__frame{transform:none}
}