/* ============================================================
   金宝搏官网 · 共享样式 /assets/site.css
   匣底墨蓝骨架 + 宝匣金细线 + 信号青状态点
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0E1B2C;
  --ink-2:#13263B;
  --ink-3:#0A1420;
  --ink-4:#08111B;
  --ivory:#F3EFE4;
  --gold:#C8A24A;
  --gold-hi:#E4C87A;
  --gold-deep:#8A6A22;
  --signal:#2FD3C0;
  --teal:#0F7F76;
  --mist:#8C9BAC;
  --white:#FFFFFF;

  --rail-w:88px;
  --masthead-h:62px;
  --wrap:1180px;
  --gutter:clamp(18px,4vw,56px);

  --font-display:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --font-body:var(--font-display);

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur-fast:140ms;
  --dur:220ms;
  --dur-slow:320ms;

  --hair:1px solid rgba(200,162,74,.26);
  --hair-strong:1px solid rgba(200,162,74,.55);
  --shadow-plate:0 0 0 1px rgba(200,162,74,.22),0 22px 48px -28px rgba(0,0,0,.95);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:24px;
}

body,
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{ margin:0; }

ul[class],
ol[class]{ padding:0; list-style:none; margin:0; }

img,svg,video{ display:block; max-width:100%; height:auto; }

a{ color:inherit; text-decoration:none; }

button{
  font:inherit;
  color:inherit;
  background:none;
  border:0;
  padding:0;
  cursor:pointer;
}

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

/* ---------- 3. 基础排版 / 页面骨架 ---------- */
body{
  margin:0;
  min-height:100vh;
  padding-left:var(--rail-w);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 84% -12%,rgba(200,162,74,.13),transparent 56%),
    radial-gradient(circle at 0% 104%,rgba(47,211,192,.07),transparent 46%);
  background-attachment:fixed;
  color:var(--ivory);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.06;
  letter-spacing:-.02em;
}

h2{ font-size:clamp(28px,4vw,56px); }
h3{ font-size:clamp(20px,2.4vw,30px); line-height:1.2; }

strong{ font-weight:700; color:var(--ivory); }
small{ font-size:13px; }

::selection{
  background:var(--gold);
  color:var(--ink);
}

/* ---------- 4. 通用容器与排版组件 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.measure{ max-width:72ch; }

.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(56px,9vw,144px);
  line-height:.92;
  letter-spacing:-.035em;
}

.quote{
  font-family:var(--font-serif);
  font-size:clamp(20px,2.6vw,30px);
  line-height:1.5;
  letter-spacing:.01em;
  color:var(--ivory);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gold);
}

.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  flex:none;
  background:currentColor;
}

.rule{
  height:1px;
  width:100%;
  border:0;
  background:linear-gradient(90deg,var(--gold),rgba(200,162,74,0));
}

.section{ padding-block:clamp(40px,7vw,88px); }
.section--tight{ padding-block:clamp(24px,4vw,48px); }

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:clamp(20px,3vw,32px);
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  border:1px solid transparent;
  background:transparent;
  color:var(--ivory);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.2;
  cursor:pointer;
  transition:background var(--dur) var(--ease),
             color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease),
             transform var(--dur-fast) var(--ease);
}

.btn:active{ transform:translateY(1px); }

.btn--gold{
  background:var(--gold);
  color:var(--ink);
  border-color:var(--gold);
  box-shadow:0 14px 28px -18px rgba(200,162,74,.95);
}
.btn--gold:hover{
  background:var(--gold-hi);
  border-color:var(--gold-hi);
  box-shadow:0 18px 34px -18px rgba(228,200,122,.9);
}

.btn--ghost{
  border-color:rgba(200,162,74,.5);
  color:var(--gold);
}
.btn--ghost:hover{
  border-color:var(--gold);
  color:var(--gold-hi);
  background:rgba(200,162,74,.1);
}

.btn--block{ width:100%; }

/* ---------- 6. 面包屑 / 铭牌 / 标签 ---------- */
.breadcrumb{ padding:18px 0 0; }

.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
}

.breadcrumb__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--gold-deep);
}

.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:rgba(200,162,74,.45);
}

.breadcrumb__link{ color:var(--mist); transition:color var(--dur-fast) var(--ease); }
.breadcrumb__link:hover{ color:var(--gold-hi); }
.breadcrumb__current{ color:var(--gold); }

.plate{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 10px;
  border:1px solid rgba(200,162,74,.45);
  background:rgba(200,162,74,.06);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.6;
  white-space:nowrap;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid rgba(47,211,192,.4);
  background:rgba(47,211,192,.08);
  color:var(--signal);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.7;
}

.tag::before{
  content:"";
  width:5px;
  height:5px;
  flex:none;
  border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 8px var(--signal);
}

/* ---------- 7. 面板 / 卡片 / 网格 ---------- */
.panel{
  position:relative;
  background:var(--ink-2);
  border:var(--hair);
  box-shadow:var(--shadow-plate);
}

.card{
  position:relative;
  padding:clamp(18px,2.6vw,28px);
  background:linear-gradient(160deg,#152942,#101F32 72%);
  border:1px solid rgba(200,162,74,.22);
  transition:border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}

.card:hover{
  border-color:rgba(200,162,74,.55);
  box-shadow:0 26px 50px -30px rgba(0,0,0,.95);
}

.grid{
  display:grid;
  gap:clamp(16px,2.4vw,28px);
}

.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid--auto{ grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr)); }

/* ---------- 8. 图片容器（页面阶段放入 .media__img） ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:linear-gradient(140deg,#1A3049,#0C1725 78%);
  border:1px solid rgba(200,162,74,.28);
}

.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(115deg,transparent 38%,rgba(228,200,122,.16) 50%,transparent 62%);
}

.media__img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.media--16x9{ aspect-ratio:16 / 9; }
.media--4x5{ aspect-ratio:4 / 5; }
.media--1x1{ aspect-ratio:1 / 1; }
.media--21x9{ aspect-ratio:21 / 9; }

.media__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
}

/* ---------- 9. 手风琴（答疑 / 版本记录） ---------- */
.disclosure{
  border:1px solid rgba(200,162,74,.22);
  background:rgba(19,38,59,.55);
  transition:border-color var(--dur) var(--ease),
             background var(--dur) var(--ease);
}

.disclosure + .disclosure{ margin-top:2px; }

.disclosure[data-open]{
  border-color:rgba(200,162,74,.6);
  background:rgba(19,38,59,.92);
}

.disclosure__btn{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 18px;
  text-align:left;
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  color:var(--ivory);
  transition:color var(--dur-fast) var(--ease);
}

.disclosure__btn:hover{ color:var(--gold-hi); }

.disclosure__sign{
  position:relative;
  width:14px;
  height:14px;
  flex:none;
  border:1px solid rgba(200,162,74,.6);
  transition:border-color var(--dur) var(--ease);
}

.disclosure__sign::before,
.disclosure__sign::after{
  content:"";
  position:absolute;
  background:var(--gold);
  transition:transform var(--dur) var(--ease),
             opacity var(--dur) var(--ease),
             background var(--dur) var(--ease);
}

.disclosure__sign::before{
  left:3px; right:3px; top:50%;
  height:1px;
  transform:translateY(-50%);
}

.disclosure__sign::after{
  top:3px; bottom:3px; left:50%;
  width:1px;
  transform:translateX(-50%);
}

.disclosure[data-open] .disclosure__sign{ border-color:var(--signal); }
.disclosure[data-open] .disclosure__sign::before{ background:var(--signal); }
.disclosure[data-open] .disclosure__sign::after{
  transform:translateX(-50%) scaleY(0);
  opacity:0;
}

.disclosure__panel{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows var(--dur-slow) var(--ease);
}

.disclosure[data-open] .disclosure__panel{ grid-template-rows:1fr; }

.disclosure__inner{ overflow:hidden; }

.disclosure__body{
  padding:0 18px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--mist);
}

.disclosure__body > :first-child{ margin-top:0; }
.disclosure__body > :last-child{ margin-bottom:0; }

/* ---------- 10. 显现 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 520ms var(--ease),transform 520ms var(--ease);
}

.has-js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ============================================================
   11. 头部 · 竖向导轨 / 移动顶部条 / 抽屉
   ============================================================ */
.site-header{
  position:relative;
  z-index:60;
}

.skip-link{
  position:fixed;
  top:12px;
  left:calc(var(--rail-w) + 16px);
  z-index:200;
  padding:10px 16px;
  background:var(--gold);
  color:var(--ink);
  border:2px solid var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}

.skip-link:focus{ transform:translateY(0); }

/* --- 导轨 --- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:70;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:18px 0 14px;
  background:linear-gradient(180deg,#0B1626 0%,#0E1B2C 42%,#0A1420 100%);
  border-right:1px solid rgba(200,162,74,.3);
  box-shadow:inset -12px 0 24px -20px rgba(0,0,0,.9);
}

.rail__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  width:100%;
  padding:2px 0 14px;
}

.rail__brand::after{
  content:"";
  width:1px;
  height:26px;
  background:linear-gradient(180deg,var(--gold-deep),rgba(200,162,74,0));
}

.rail__seal{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  flex:none;
  border:1px solid var(--gold);
  background:linear-gradient(145deg,rgba(200,162,74,.18),transparent 72%);
  color:var(--gold);
  font-family:var(--font-display);
  font-size:18px;
  font-weight:900;
  line-height:1;
  transition:color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             background var(--dur) var(--ease);
}

.rail__brand:hover .rail__seal,
.rail__brand:focus-visible .rail__seal{
  color:var(--gold-hi);
  border-color:var(--gold-hi);
  background:linear-gradient(145deg,rgba(228,200,122,.3),transparent 72%);
}

.rail__names{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}

.rail__name{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:19px;
  font-weight:900;
  line-height:1;
  letter-spacing:.24em;
  color:var(--ivory);
}

.rail__latin{ display:none; }

.rail__descriptor{ display:none; }

/* --- 导轨导航 --- */
.rail__nav{
  flex:1 1 auto;
  width:100%;
  min-height:0;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:10px 0;
  overflow-y:auto;
  scrollbar-width:thin;
  scrollbar-color:rgba(200,162,74,.45) transparent;
}

.rail__nav::-webkit-scrollbar{ width:3px; }
.rail__nav::-webkit-scrollbar-thumb{ background:rgba(200,162,74,.45); }

.rail__list{
  display:flex;
  flex-direction:column;
  width:100%;
  margin:0;
  padding:0;
  list-style:none;
}

.rail__item + .rail__item{ border-top:1px solid rgba(200,162,74,.1); }

.rail__link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:9px 4px;
  color:var(--mist);
  font-size:13px;
  line-height:1.15;
  letter-spacing:.01em;
  text-align:center;
  transition:color var(--dur-fast) var(--ease),
             background var(--dur-fast) var(--ease);
}

.rail__link:hover{
  color:var(--ivory);
  background:rgba(200,162,74,.08);
}

.rail__num{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.1em;
  color:var(--gold-deep);
  transition:color var(--dur-fast) var(--ease);
}

.rail__link:hover .rail__num{ color:var(--gold); }

.rail__label{ font-weight:500; }

.rail__link[aria-current="page"]{
  color:var(--ivory);
  background:linear-gradient(90deg,rgba(200,162,74,.24),rgba(200,162,74,0) 88%);
}

.rail__link[aria-current="page"] .rail__label{ font-weight:700; }

.rail__link[aria-current="page"] .rail__num{ color:var(--signal); }

.rail__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:3px;
  background:var(--gold);
  box-shadow:0 0 10px rgba(200,162,74,.7);
}

/* --- 导轨底部 --- */
.rail__foot{
  width:100%;
  margin-top:auto;
  padding:12px 6px 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  border-top:1px solid rgba(200,162,74,.22);
}

.rail__quick{
  display:block;
  width:100%;
  padding:9px 2px;
  border:1px solid rgba(200,162,74,.55);
  background:rgba(200,162,74,.06);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  line-height:1.4;
  text-align:center;
  transition:background var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease);
}

.rail__quick:hover{
  background:var(--gold);
  border-color:var(--gold-hi);
  color:var(--ink);
}

.rail__note{
  font-family:var(--font-mono);
  font-size:9px;
  line-height:1.55;
  letter-spacing:.03em;
  color:var(--gold-deep);
  text-align:center;
}

/* --- 滚动进度细线 --- */
.rail__progress{
  position:absolute;
  top:0;
  right:0;
  width:3px;
  height:100%;
  background:rgba(200,162,74,.1);
  overflow:hidden;
  pointer-events:none;
}

.rail__progress-bar{
  display:block;
  width:100%;
  height:0;
  background:linear-gradient(180deg,var(--gold-hi),var(--gold));
  box-shadow:0 0 12px rgba(200,162,74,.65);
  transition:height 90ms linear;
}

/* --- 移动顶部条 --- */
.masthead{ display:none; }

.masthead__brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}

.masthead__seal{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  flex:none;
  border:1px solid var(--gold);
  background:rgba(200,162,74,.12);
  color:var(--gold);
  font-size:15px;
  font-weight:900;
  line-height:1;
}

.masthead__text{
  display:flex;
  flex-direction:column;
  min-width:0;
}

.masthead__name{
  font-size:15px;
  font-weight:900;
  line-height:1.25;
  letter-spacing:.08em;
  color:var(--ivory);
}

.masthead__sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.2em;
  line-height:1.4;
  color:var(--gold-deep);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.masthead__toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:none;
  padding:7px 10px;
  border:1px solid rgba(200,162,74,.5);
  background:rgba(200,162,74,.06);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.4;
  transition:border-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             background var(--dur-fast) var(--ease);
}

.masthead__toggle:hover{
  border-color:var(--gold-hi);
  color:var(--gold-hi);
  background:rgba(200,162,74,.12);
}

.masthead__bars{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  width:16px;
  height:12px;
}

.masthead__bar{
  display:block;
  width:100%;
  height:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),
             opacity var(--dur) var(--ease);
}

/* --- 抽屉遮罩 --- */
.scrim{ display:none; }

/* ============================================================
   12. 页脚 · 匣底信息带
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,120px);
  background:linear-gradient(180deg,var(--ink-3) 0%,var(--ink-4) 100%);
  border-top:1px solid rgba(200,162,74,.35);
  box-shadow:inset 0 1px 0 rgba(228,200,122,.14);
  color:var(--ivory);
}

.footer__band{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px var(--gutter);
  border-bottom:1px solid rgba(200,162,74,.18);
  background:rgba(200,162,74,.04);
}

.footer__band-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--gold);
  white-space:nowrap;
}

.footer__band-rule{
  flex:1 1 auto;
  height:1px;
  background:linear-gradient(90deg,rgba(200,162,74,.5),rgba(200,162,74,.05));
}

.footer__band-code{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--gold-deep);
  white-space:nowrap;
}

.footer__inner{
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(0,2.1fr);
  gap:clamp(24px,5vw,64px);
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(32px,5vw,56px) var(--gutter) clamp(24px,4vw,40px);
}

.footer__brand{ min-width:0; }

.footer__brand-link{
  display:inline-flex;
  align-items:center;
  gap:12px;
}

.footer__seal{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  flex:none;
  border:1px solid var(--gold);
  background:linear-gradient(145deg,rgba(200,162,74,.2),transparent 75%);
  color:var(--gold);
  font-size:18px;
  font-weight:900;
  line-height:1;
  transition:border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}

.footer__brand-link:hover .footer__seal{
  border-color:var(--gold-hi);
  color:var(--gold-hi);
}

.footer__brand-name{
  display:block;
  font-size:20px;
  font-weight:900;
  line-height:1.3;
  letter-spacing:.1em;
}

.footer__brand-latin{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.22em;
  color:var(--gold-deep);
}

.footer__descriptor{
  margin-top:16px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--mist);
}

.footer__note{
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed rgba(200,162,74,.25);
  max-width:34ch;
  font-size:13px;
  line-height:1.75;
  color:var(--mist);
}

.footer__groups{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}

.footer__group{ min-width:0; }

.footer__group-title{
  margin:0 0 12px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(200,162,74,.25);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  line-height:1.5;
  color:var(--gold);
}

.footer__list{
  display:flex;
  flex-direction:column;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}

.footer__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  line-height:1.5;
  color:var(--mist);
  transition:color var(--dur-fast) var(--ease);
}

.footer__link::before{
  content:"";
  width:5px;
  height:5px;
  flex:none;
  border:1px solid currentColor;
  transform:rotate(45deg);
  transition:background var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease);
}

.footer__link:hover{ color:var(--gold-hi); }

.footer__link:hover::before{
  background:var(--signal);
  border-color:var(--signal);
}

.footer__contact{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.footer__contact-row{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.footer__contact-key{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.18em;
  color:var(--gold-deep);
  text-transform:uppercase;
}

.footer__contact-val{
  font-size:13px;
  line-height:1.6;
  color:var(--ivory);
  overflow-wrap:anywhere;
}

.footer__cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:16px;
  padding:9px 14px;
  border:1px solid rgba(200,162,74,.55);
  background:rgba(200,162,74,.06);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.5;
  transition:background var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease);
}

.footer__cta:hover{
  background:var(--gold);
  border-color:var(--gold-hi);
  color:var(--ink);
}

.footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 22px;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:16px var(--gutter) 26px;
  border-top:1px solid rgba(200,162,74,.16);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.7;
  color:var(--gold-deep);
}

.footer__copy{ color:var(--mist); }
.footer__icp{ color:var(--gold); }
.footer__address{ color:var(--gold-deep); }

/* ============================================================
   13. 响应式
   ============================================================ */
@media (max-width:1080px){
  .footer__inner{ grid-template-columns:1fr; }
  .footer__groups{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width:900px){
  body{
    padding-left:0;
    padding-top:var(--masthead-h);
    font-size:16px;
  }

  body.is-nav-open{ overflow:hidden; }

  .skip-link{ left:12px; top:calc(var(--masthead-h) + 8px); }

  /* --- 顶部条 --- */
  .masthead{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:80;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    height:var(--masthead-h);
    padding:0 14px;
    background:linear-gradient(180deg,#0B1626,#0E1B2C);
    border-bottom:2px solid var(--gold-deep);
    box-shadow:0 12px 26px -14px rgba(0,0,0,.95);
  }

  /* --- 导轨变抽屉 --- */
  .rail{
    width:min(330px,86vw);
    padding:16px 14px 18px;
    align-items:stretch;
    border-right:2px solid var(--gold);
    box-shadow:26px 0 60px -34px rgba(0,0,0,.95);
    overflow-y:auto;
    z-index:90;
    transform:translateX(-100%);
    visibility:hidden;
    transition:transform var(--dur-slow) var(--ease),
               visibility var(--dur-slow) step-end;
  }

  .site-header[data-open] .rail{
    transform:translateX(0);
    visibility:visible;
    transition:transform var(--dur-slow) var(--ease),
               visibility 0s;
  }

  .rail__brand{
    flex-direction:row;
    align-items:center;
    gap:12px;
    padding:0 0 14px;
    border-bottom:1px solid rgba(200,162,74,.3);
  }

  .rail__brand::after{ display:none; }

  .rail__names{
    flex-direction:column;
    align-items:flex-start;
    gap:2px;
  }

  .rail__name{
    writing-mode:horizontal-tb;
    font-size:17px;
    letter-spacing:.12em;
  }

  .rail__latin{
    display:block;
    writing-mode:horizontal-tb;
    font-size:9px;
    letter-spacing:.2em;
    color:var(--gold-deep);
  }

  .rail__descriptor{
    display:block;
    margin:12px 0 0;
    font-family:var(--font-mono);
    font-size:10px;
    letter-spacing:.14em;
    line-height:1.7;
    color:var(--mist);
  }

  .rail__nav{
    flex:0 0 auto;
    justify-content:flex-start;
    padding:14px 0;
    overflow:visible;
  }

  .rail__item + .rail__item{
    border-top:1px solid rgba(200,162,74,.12);
  }

  .rail__link{
    flex-direction:row;
    align-items:center;
    justify-content:flex-start;
    gap:12px;
    padding:13px 10px;
    font-size:15px;
    text-align:left;
  }

  .rail__num{
    min-width:22px;
    font-size:10px;
  }

  .rail__link[aria-current="page"]{
    background:rgba(200,162,74,.16);
  }

  .rail__link[aria-current="page"]::after{
    top:8px;
    bottom:8px;
  }

  .rail__foot{
    align-items:stretch;
    padding:14px 0 0;
  }

  .rail__quick{
    padding:12px;
    font-size:13px;
  }

  .rail__note{
    text-align:left;
    font-size:10px;
    letter-spacing:.02em;
  }

  .rail__progress{ display:none; }

  /* --- 遮罩 --- */
  .scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:85;
    border:0;
    background:rgba(6,12,20,.74);
    -webkit-backdrop-filter:blur(2px);
    backdrop-filter:blur(2px);
    opacity:0;
    pointer-events:none;
    transition:opacity var(--dur) var(--ease);
  }

  .site-header[data-open] .scrim{
    opacity:1;
    pointer-events:auto;
  }

  /* --- 开合指示 --- */
  .site-header[data-open] .masthead__bar:nth-child(1){
    transform:translateY(5px) rotate(45deg);
  }
  .site-header[data-open] .masthead__bar:nth-child(2){ opacity:0; }
  .site-header[data-open] .masthead__bar:nth-child(3){
    transform:translateY(-5px) rotate(-45deg);
  }
  .site-header[data-open] .masthead__toggle{
    border-color:var(--signal);
    color:var(--signal);
    background:rgba(47,211,192,.1);
  }

  .grid--2,
  .grid--3{ grid-template-columns:1fr; }
}

@media (max-width:560px){
  .footer__groups{ grid-template-columns:1fr; }
  .footer__band-code{ display:none; }
  .footer__base{ gap:6px 16px; }
  .footer__note{ max-width:none; }
  .masthead__toggle-text{ display:none; }
  .masthead__toggle{ padding:8px; }
}

@media (max-height:700px){
  .rail__note{ display:none; }
}

/* ============================================================
   14. 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;
    transition-delay:0ms !important;
  }

  .has-js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }

  .rail__progress-bar{ transition:none; }

  .rail{
    transition:none !important;
  }
}