/* ==========================================================================
   百乐门棋牌 · 共享外壳样式表 /assets/site.css
   0 设计令牌 · 1 重置 · 2 中文排版 · 3 布局 · 4 面板与切角 · 5 按钮
   6 数据组件 · 7 文本组件 · 8 图片容器 · 9 动效 · 10 页头 · 11 页脚 · 12 无障碍
   ========================================================================== */

/* ---------- 0 · 设计令牌 ---------- */
:root{
  --ink-900:#0A2B22;
  --ink-700:#123B2F;
  --ink-500:#1E5A47;
  --gold-600:#B8892B;
  --gold-300:#E4C36A;
  --red-600:#C0392B;
  --blue-400:#7FC4D8;
  --ivory-050:#F4EFE4;
  --sage-500:#6E8377;
  --deep-950:#06120F;
  --green-400:#2FA98C;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;

  --shell:min(1240px,92vw);
  --gap:clamp(16px,2vw,28px);
  --space-s:40px;
  --space-m:64px;
  --space-l:96px;

  --cut:16px;
  --pill:999px;
  --line-gold:1px solid rgba(184,137,43,.38);
  --line-ink:1px solid rgba(30,90,71,.62);
  --dur:380ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --title-fluid:clamp(2.4rem,5.2vw,5.4rem);
  --body-fluid:clamp(1rem,.28vw + .94rem,1.125rem);
}
:root[data-density="compact"]{
  --space-l:64px;
  --space-m:44px;
  --space-s:28px;
  --gap:clamp(12px,1.4vw,18px);
  --title-fluid:clamp(2rem,3.6vw,3.6rem);
}

/* ---------- 1 · 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh;overflow-x:hidden}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--gold-300);outline-offset:3px;border-radius:3px}
#main-content{scroll-margin-top:104px}

/* ---------- 2 · 中文排版基底 ---------- */
body{
  font-family:var(--font-body);
  font-size:var(--body-fluid);
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ivory-050);
  background:var(--ink-900);
}
.mono-index{
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold-300);
}
.mono-num,.num{font-family:var(--font-mono);font-weight:500;letter-spacing:.04em}
.display{
  font-family:var(--font-display);
  font-weight:300;
  font-size:var(--title-fluid);
  line-height:1.06;
  letter-spacing:-.02em;
}
.accent-gold{color:var(--gold-300)}
.accent-red{color:#E88A7E}
.accent-blue{color:var(--blue-400)}

/* ---------- 3 · 布局与章节 ---------- */
.shell{width:var(--shell);margin-inline:auto}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.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-12{grid-column:span 12}

.section{position:relative;padding:var(--space-l) 0}
.section--tight{padding:var(--space-m) 0}
.section--ink{background:var(--ink-900);color:var(--ivory-050)}
.section--ink-2{background:var(--ink-700);color:var(--ivory-050)}
.section--ivory{background:var(--ivory-050);color:var(--ink-900)}
.section--deep{background:var(--deep-950);color:var(--ivory-050)}
.section--grid::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(184,137,43,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(184,137,43,.06) 1px,transparent 1px);
  background-size:72px 72px;
}
.section--ivory.section--grid::before{
  background-image:
    linear-gradient(rgba(10,43,34,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(10,43,34,.07) 1px,transparent 1px);
}
.section__head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(16px,3vw,40px);
  align-items:start;
}
.section-index{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:clamp(1.6rem,3vw,2.6rem);
  line-height:1;
  letter-spacing:.02em;
  color:var(--gold-600);
  padding-top:.12em;
}
.section--ivory .section-index{color:var(--red-600)}
.section-kicker{
  display:block;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--sage-500);
  margin-bottom:10px;
}
.section-title{
  font-family:var(--font-display);
  font-weight:300;
  font-size:var(--title-fluid);
  line-height:1.06;
  letter-spacing:-.02em;
}
.section-lede{
  max-width:38ch;
  margin-top:15px;
  font-size:.95rem;
  color:rgba(244,239,228,.72);
}
.section--ivory .section-lede{color:rgba(10,43,34,.74)}
.divider{height:1px;border:0;margin:var(--space-s) 0;background:linear-gradient(90deg,rgba(184,137,43,.5),rgba(184,137,43,0))}
.mt-s{margin-top:var(--space-s)}
.mt-m{margin-top:var(--space-m)}

/* ---------- 4 · 面板、切角与层叠 ---------- */
.cut{
  --cut:16px;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.cut-sm{
  --cut:10px;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.cut-alt{
  --cut:16px;
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel{
  position:relative;
  --cut:16px;
  padding:clamp(20px,2.4vw,32px);
  background:linear-gradient(180deg,rgba(18,59,47,.94),rgba(10,43,34,.97));
  border:var(--line-gold);
  color:var(--ivory-050);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.panel__index{
  display:block;
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  color:var(--gold-600);
}
.panel__meta{
  display:block;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  color:var(--sage-500);
}
.panel__title{
  font-family:var(--font-display);
  font-weight:400;
  font-size:clamp(1.12rem,1.6vw,1.5rem);
  line-height:1.4;
  letter-spacing:.01em;
  margin-bottom:10px;
}
.panel__body{font-size:.94rem;line-height:1.85;color:rgba(244,239,228,.8)}
.panel__foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;
  border-top:1px dashed rgba(184,137,43,.32);
  font-size:.8rem;
}
.panel--ivory{
  background:linear-gradient(180deg,#FBF8F0,#F1EADD);
  border:1px solid rgba(10,43,34,.16);
  color:var(--ink-900);
}
.panel--ivory .panel__index{color:var(--red-600)}
.panel--ivory .panel__body{color:rgba(10,43,34,.78)}
.panel--outline{background:rgba(6,18,15,.38);border-color:rgba(30,90,71,.72)}
.panel--accent{
  background:linear-gradient(150deg,rgba(184,137,43,.2),rgba(10,43,34,.92));
  border-color:rgba(228,195,106,.5);
}
.stack{display:grid;gap:var(--gap)}
.stack--offset > *:nth-child(2){margin-left:clamp(0px,2vw,24px)}
.stack--offset > *:nth-child(3){margin-right:clamp(0px,2vw,24px)}
.stack--offset > *:nth-child(4){margin-left:clamp(0px,3vw,40px)}

/* ---------- 5 · 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;
  font-family:var(--font-body);
  font-size:.86rem;
  letter-spacing:.06em;
  text-decoration:none;
  border:1px solid transparent;
  color:var(--ivory-050);
  background:none;
  transition:background-color 140ms linear,color 140ms linear,border-color 140ms linear,filter 140ms linear;
}
.btn--capsule{border-radius:var(--pill)}
.btn--gold{
  background:linear-gradient(180deg,var(--gold-300),var(--gold-600));
  border-color:rgba(228,195,106,.9);
  color:var(--deep-950);
  font-weight:600;
}
.btn--gold:hover{filter:brightness(1.07)}
.btn--outline{
  border-color:rgba(184,137,43,.55);
  background:rgba(184,137,43,.07);
  color:var(--gold-300);
}
.btn--outline:hover{background:rgba(184,137,43,.18)}
.btn--ghost{border-color:rgba(244,239,228,.28);color:var(--ivory-050)}
.btn--ghost:hover{border-color:rgba(244,239,228,.6);background:rgba(244,239,228,.08)}
.btn--sm{padding:7px 14px;font-size:.78rem}
.btn--block{width:100%}
.section--ivory .btn--outline{color:#8A6416;border-color:rgba(184,137,43,.6);background:rgba(184,137,43,.1)}

/* ---------- 6 · 数据组件 ---------- */
.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-family:var(--font-mono);font-weight:500;
  font-size:clamp(1.6rem,2.6vw,2.4rem);
  line-height:1.1;letter-spacing:.02em;
  color:var(--gold-300);
}
.stat__label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.18em;color:var(--sage-500)}
.stat--blue .stat__value{color:var(--blue-400)}
.stat--red .stat__value{color:#E88A7E}
.stat--green .stat__value{color:var(--green-400)}

.ledger{display:grid;border-top:var(--line-gold)}
.ledger__row{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;
  gap:14px;align-items:center;
  padding:13px 4px;
  border-bottom:1px solid rgba(184,137,43,.2);
  font-size:.9rem;
}
.ledger__index{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;color:var(--gold-600)}
.ledger__label{color:inherit}
.ledger__value{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em;color:var(--blue-400)}
.section--ivory .ledger,.panel--ivory .ledger{border-top-color:rgba(10,43,34,.2)}
.section--ivory .ledger__row,.panel--ivory .ledger__row{border-bottom-color:rgba(10,43,34,.12)}
.section--ivory .ledger__value,.panel--ivory .ledger__value{color:var(--ink-500)}

.data-table{width:100%;border-collapse:collapse;font-size:.88rem}
.data-table caption{
  text-align:left;padding-bottom:10px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--sage-500);
}
.data-table th,.data-table td{
  padding:11px 12px;text-align:left;vertical-align:top;
  border-bottom:1px solid rgba(184,137,43,.22);
}
.data-table th{
  font-family:var(--font-mono);font-weight:500;font-size:.68rem;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-300);
  border-bottom-color:rgba(184,137,43,.45);
}
.section--ivory .data-table th,.panel--ivory .data-table th{color:#8A6416}
.section--ivory .data-table th,.section--ivory .data-table td{border-bottom-color:rgba(10,43,34,.14)}

.legend{display:flex;flex-wrap:wrap;gap:8px 20px}
.legend__item{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;
  color:var(--sage-500);
}
.legend__swatch{width:12px;height:12px;flex:0 0 auto;background:var(--gold-600);border:1px solid rgba(244,239,228,.22)}
.legend__swatch--red{background:var(--red-600)}
.legend__swatch--blue{background:var(--blue-400)}
.legend__swatch--green{background:var(--green-400)}
.legend__swatch--ink{background:var(--ink-700)}
.legend__label{color:inherit}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--pill);
  border:1px solid rgba(184,137,43,.5);
  background:rgba(184,137,43,.08);
  color:var(--gold-300);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  white-space:nowrap;
}
.tag--red{border-color:rgba(192,57,43,.62);background:rgba(192,57,43,.13);color:#E88A7E}
.tag--blue{border-color:rgba(127,196,216,.5);background:rgba(127,196,216,.1);color:var(--blue-400)}
.tag--green{border-color:rgba(47,169,140,.5);background:rgba(47,169,140,.1);color:var(--green-400)}
.tag--plain{border-color:rgba(110,131,119,.6);background:none;color:var(--sage-500)}
.section--ivory .tag,.panel--ivory .tag{color:#8A6416;border-color:rgba(184,137,43,.45);background:rgba(184,137,43,.1)}
.section--ivory .tag--red,.panel--ivory .tag--red{color:#9B2C20;border-color:rgba(192,57,43,.45);background:rgba(192,57,43,.08)}

.track{position:relative;display:grid;gap:var(--gap);padding-left:28px}
.track::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(184,137,43,.62),rgba(30,90,71,.32));
}
.track__item{position:relative}
.track__node{
  position:absolute;left:-28px;top:6px;
  width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);
  border:2px solid var(--gold-600);
}
.track__item--now .track__node{
  background:var(--red-600);border-color:var(--red-600);
  box-shadow:0 0 0 4px rgba(192,57,43,.22);
}
.track__index{
  display:block;margin-bottom:6px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.18em;color:var(--gold-300);
}
.track__body{font-size:.94rem;color:rgba(244,239,228,.8)}
.section--ivory .track__body{color:rgba(10,43,34,.78)}
.section--ivory .track__node{background:var(--ivory-050)}

/* ---------- 7 · 文本组件 ---------- */
.prose{max-width:40ch;font-size:.98rem;line-height:1.9}
.prose p{margin-bottom:1.1em}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{font-family:var(--font-display);font-weight:400;line-height:1.4;margin:1.8em 0 .7em}
.prose h2{font-size:1.4rem}
.prose h3{font-size:1.12rem}
.prose ul,.prose ol{padding-left:1.2em;margin-bottom:1.1em}
.prose li{margin-bottom:.5em}
.prose strong{font-weight:600;color:var(--gold-300)}
.section--ivory .prose strong,.panel--ivory .prose strong{color:#8A6416}
.prose a{color:var(--gold-300);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:1.4em 0;padding:14px 18px;
  border-left:2px solid var(--gold-600);
  background:rgba(184,137,43,.07);
  font-size:.94rem;
}
.section--ivory .prose blockquote,.panel--ivory .prose blockquote{
  background:rgba(10,43,34,.05);border-left-color:var(--red-600);
}
.note{font-size:.8rem;line-height:1.75;color:var(--sage-500)}
.callout{
  display:flex;gap:12px;
  padding:14px 16px;
  border-left:2px solid var(--blue-400);
  background:rgba(127,196,216,.08);
  font-size:.86rem;
  color:rgba(244,239,228,.86);
}
.section--ivory .callout{color:rgba(10,43,34,.82);background:rgba(127,196,216,.16)}
.copy-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--pill);
  border:1px solid rgba(184,137,43,.45);
  background:rgba(184,137,43,.06);
  color:var(--gold-300);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;
}
.copy-btn:hover{background:rgba(184,137,43,.18)}
.copy-btn[data-copied="true"]{border-color:rgba(47,169,140,.6);color:var(--green-400)}

.breadcrumb{padding-top:18px}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;
  color:var(--sage-500);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--sage-500);text-decoration:none}
.breadcrumb__link:hover{color:var(--gold-300)}
.breadcrumb__sep{color:rgba(110,131,119,.7)}
.breadcrumb__current{color:var(--gold-300)}
.section--ivory .breadcrumb__current{color:#8A6416}

/* ---------- 8 · 图片容器（供页面阶段放图） ---------- */
.media-frame{
  position:relative;
  --cut:14px;
  overflow:hidden;
  border:var(--line-gold);
  background:linear-gradient(150deg,var(--ink-700),var(--deep-950));
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.media-frame--3x2{aspect-ratio:3 / 2}
.media-frame--5x4{aspect-ratio:5 / 4}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame__inner{position:absolute;inset:0;display:grid;place-items:center}
.media-frame__inner img,.media-frame__inner picture{width:100%;height:100%;object-fit:cover}
.media-frame__placeholder{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(184,137,43,.1) 1px,transparent 1px),
    linear-gradient(90deg,rgba(184,137,43,.1) 1px,transparent 1px);
  background-size:48px 48px;
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:12px 14px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  color:rgba(244,239,228,.84);
  background:linear-gradient(180deg,rgba(6,18,15,0),rgba(6,18,15,.86));
}
.media-frame__tag{position:absolute;top:12px;left:12px}

/* ---------- 9 · 动效 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10 · 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:14px 0 12px;
  background:linear-gradient(180deg,rgba(6,18,15,.93) 0%,rgba(6,18,15,.72) 62%,rgba(6,18,15,0) 100%);
  transition:padding var(--dur) var(--ease);
}
.site-header[data-scrolled]{padding:8px 0 8px}
.skip-link{
  position:absolute;left:50%;top:10px;z-index:80;
  transform:translate(-50%,-190%);
  padding:10px 18px;border-radius:var(--pill);
  background:var(--gold-300);color:var(--deep-950);
  font-size:.82rem;text-decoration:none;
  transition:transform 160ms var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

.capsule{
  width:var(--shell);margin-inline:auto;
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;gap:clamp(10px,1.6vw,26px);
  padding:10px 12px 10px 14px;
  border:1px solid rgba(184,137,43,.42);
  border-radius:var(--pill);
  background:linear-gradient(180deg,rgba(18,59,47,.95),rgba(10,43,34,.93));
  box-shadow:0 20px 44px -30px rgba(0,0,0,.95),inset 0 1px 0 rgba(228,195,106,.16);
  transition:padding var(--dur) var(--ease),background-color 160ms linear;
}
.site-header[data-scrolled] .capsule{background-color:rgba(8,32,25,.96);background-image:none}

.capsule__brand{min-width:0}
.brand{display:inline-flex;align-items:center;gap:11px;padding:2px;text-decoration:none;color:inherit}
.brand__mark{
  position:relative;flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  border:1px solid rgba(184,137,43,.6);
  background-color:#0E332A;
  background-image:repeating-conic-gradient(from 0deg,rgba(228,195,106,.38) 0% 25%,rgba(228,195,106,0) 0% 50%);
  background-size:11px 11px;
  box-shadow:inset 0 0 20px rgba(6,18,15,.72);
}
.brand__mark::after{
  content:"";position:absolute;right:-3px;top:-3px;
  width:9px;height:9px;border-radius:50%;
  background:var(--red-600);
  box-shadow:0 0 0 2px rgba(10,43,34,.92);
}
.brand__text{display:flex;flex-direction:column;line-height:1.22;min-width:0}
.brand__name{
  font-family:var(--font-display);font-weight:500;
  font-size:1.06rem;letter-spacing:.1em;
  color:var(--ivory-050);white-space:nowrap;
}
.brand__line{
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.14em;
  color:var(--sage-500);white-space:nowrap;
}
.brand--footer .brand__name{font-size:1.22rem}
.brand--footer .brand__mark{width:46px;height:46px}

.capsule__nav{min-width:0}
.nav-list{display:flex;align-items:center;justify-content:center;gap:2px}
.nav-link{
  display:inline-block;
  padding:8px 14px;border-radius:var(--pill);
  border:1px solid transparent;
  font-size:.88rem;letter-spacing:.06em;
  color:rgba(244,239,228,.76);
  text-decoration:none;white-space:nowrap;
  transition:color 120ms linear,background-color 120ms linear,border-color 120ms linear;
}
.nav-link:hover{color:var(--ivory-050);background:rgba(228,195,106,.1);border-color:rgba(228,195,106,.3)}
.nav-link[aria-current="page"]{
  color:var(--deep-950);
  background:var(--gold-300);
  border-color:var(--gold-300);
  font-weight:600;
}

.capsule__tools{display:flex;align-items:center;gap:8px}
.tool-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:var(--pill);
  border:1px solid rgba(30,90,71,.9);
  background:rgba(6,18,15,.5);
  color:var(--ivory-050);
  font-size:.76rem;letter-spacing:.06em;
}
.tool-btn:hover{border-color:rgba(127,196,216,.6)}
.tool-btn__label{color:var(--sage-500);letter-spacing:.1em}
.tool-btn__state{font-family:var(--font-mono);font-size:.7rem;color:var(--blue-400)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 13px;border-radius:var(--pill);
  border:1px solid rgba(184,137,43,.5);
  background:rgba(6,18,15,.6);
  color:var(--ivory-050);
  font-size:.76rem;letter-spacing:.14em;
}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1px;background:var(--gold-300);transition:transform 160ms var(--ease),opacity 160ms linear}
.nav-toggle__text{white-space:nowrap}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(30,90,71,.45);overflow:hidden;
}
.scroll-progress > span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--gold-600),var(--gold-300) 55%,var(--red-600));
  transition:width 120ms linear;
}

/* ---------- 11 · 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  padding:clamp(56px,7vw,96px) 0 30px;
  background:var(--deep-950);
  color:rgba(244,239,228,.82);
  border-top:1px solid rgba(184,137,43,.3);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(184,137,43,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(184,137,43,.07) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 74%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 74%);
}
.site-footer::after{
  content:"";position:absolute;left:0;top:0;
  width:min(42%,420px);height:2px;
  background:linear-gradient(90deg,var(--gold-600),var(--red-600) 62%,rgba(192,57,43,0));
}
.footer__shell{
  position:relative;width:var(--shell);margin-inline:auto;
  display:grid;gap:clamp(30px,4vw,56px);
}
.footer__masthead{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:var(--gap);
  padding-bottom:clamp(24px,3vw,38px);
  border-bottom:1px solid rgba(184,137,43,.22);
}
.footer__brand{display:grid;gap:14px;align-content:start}
.footer__pitch{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;color:var(--sage-500)}
.footer__contact{display:grid;gap:8px;align-content:start}
.footer__contact-line{
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;
  color:rgba(244,239,228,.86);
  overflow-wrap:anywhere;
}
.footer__contact .btn{justify-self:start;margin-top:6px}
.footer__note{max-width:46ch;font-size:.78rem;line-height:1.8;color:rgba(244,239,228,.6)}
.footer__grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.footer__col{display:grid;gap:14px;align-content:start}
.footer__col-title{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-body);font-size:.86rem;font-weight:600;
  letter-spacing:.14em;color:var(--ivory-050);
}
.footer__col-title .mono-index{color:var(--gold-600);font-size:.66rem}
.footer__links{display:grid;gap:8px}
.footer__link{
  display:inline-flex;align-items:center;gap:9px;
  padding:2px 0;
  font-size:.86rem;letter-spacing:.04em;
  color:rgba(244,239,228,.7);
  text-decoration:none;
  transition:color 120ms linear;
}
.footer__link::before{
  content:"";width:10px;height:1px;flex:0 0 auto;
  background:rgba(184,137,43,.6);
  transition:width 140ms var(--ease),background-color 140ms linear;
}
.footer__link:hover{color:var(--gold-300)}
.footer__link:hover::before{width:20px;background:var(--gold-300)}
.footer__meta{
  display:flex;flex-wrap:wrap;gap:8px 28px;
  padding-top:clamp(20px,2.6vw,30px);
  border-top:1px solid rgba(184,137,43,.22);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;
  color:var(--sage-500);
}
.footer__legal{margin:0}
.footer__stamp{color:var(--gold-600)}

/* ---------- 12 · 响应式与无障碍 ---------- */
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}

@media (max-width:1100px){
  .nav-link{padding:8px 10px;font-size:.82rem}
  .tool-btn__label{display:none}
}
@media (max-width:980px){
  .capsule{
    grid-template-columns:minmax(0,1fr) auto;
    border-radius:22px;
    padding:10px 12px;
  }
  .capsule__nav{
    grid-column:1 / -1;
    display:none;
    margin-top:10px;padding-top:10px;
    border-top:1px solid rgba(184,137,43,.25);
  }
  .site-header[data-open] .capsule__nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 14px;border-radius:12px;font-size:.9rem;
  }
  .nav-link::after{content:"›";font-family:var(--font-mono);color:rgba(228,195,106,.75)}
  .nav-link[aria-current="page"]::after{color:var(--deep-950)}
  .nav-toggle{display:inline-flex}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 6}
  .section__head{grid-template-columns:1fr}
  .section-index{padding-top:0}
  .footer__masthead{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .tool-btn{display:none}
  .capsule__tools .btn{font-size:.76rem;padding:8px 12px}
}
@media (max-width:560px){
  .capsule__tools .btn{display:none}
  .brand__line{display:none}
  .footer__grid{grid-template-columns:1fr}
  .footer__meta{flex-direction:column;gap:6px}
  .ledger__row{grid-template-columns:46px minmax(0,1fr);row-gap:4px}
  .ledger__value{grid-column:2 / -1}
}
@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.js [data-reveal]{opacity:1;transform:none}
  .scroll-progress > span{transition:none}
  .site-header{transition:none}
}