/* ============================================================
   MANBETX 赛场 · 共享站点套件 /assets/site.css
   夜间赛道指挥中心：竖排仪表盘索引 + 堆叠面板 + 荧光数据
   ============================================================ */

:root{
  /* 色彩 */
  --ink:#05130F;
  --panel:#0A2118;
  --panel-2:#103127;
  --cyan:#14E6C6;
  --cyan-mist:#86FBE8;
  --orange:#FF6A2B;
  --silver:#C6D2CE;
  --paper:#F3EDE1;
  --text:#E7F3EF;
  --muted:#8FA69E;

  --line:rgba(198,210,206,.16);
  --line-soft:rgba(198,210,206,.09);
  --line-strong:rgba(198,210,206,.34);

  /* 度量 */
  --rail-w:88px;
  --strip-h:28px;
  --mob-header-h:54px;
  --dock-h:62px;
  --max:1280px;
  --gap:24px;
  --radius:14px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:.26s;

  /* 字体 */
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,"Courier New",monospace;
  --font-narrow:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
h1,h2,h3,h4{font-weight:800;line-height:1.2;letter-spacing:-.02em}

/* ---------- 基础 ---------- */
html,body{min-height:100%}
body{
  position:relative;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  padding-top:var(--strip-h);
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(to right, rgba(198,210,206,.04) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(to bottom, rgba(198,210,206,.04) 0 1px, transparent 1px 88px);
  opacity:.85;
}
main{position:relative;z-index:1}

::selection{background:rgba(20,230,198,.28);color:#04120E}

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

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink)}
::-webkit-scrollbar-thumb{background:var(--panel-2);border-radius:8px;border:2px solid var(--ink)}
::-webkit-scrollbar-thumb:hover{background:#17443A}

/* ---------- 工具 ---------- */
.mono{font-family:var(--font-mono);letter-spacing:.04em}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.cut-corner{
  clip-path:polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  border-radius:0;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:8px;left:8px;
  z-index:300;
  padding:10px 18px;
  background:var(--cyan);
  color:#04120E;
  font-size:14px;
  font-weight:600;
  border-radius:2px;
  transform:translateY(-200%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}

/* ============================================================
   状态条
   ============================================================ */
.status-strip{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--strip-h);
  z-index:80;
  display:flex;
  align-items:center;
  background:linear-gradient(90deg,#0A2118 0%,#05130F 48%,#0A2118 100%);
  border-bottom:1px solid var(--line);
}
.status-strip__inner{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  height:100%;
  padding:0 18px;
  overflow-x:auto;
  white-space:nowrap;
  scrollbar-width:none;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.status-strip__inner::-webkit-scrollbar{display:none}
.status-strip__dot{
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(20,230,198,.9);
  animation:strip-breathe 4s ease-in-out infinite;
}
.status-strip__sep{color:rgba(198,210,206,.3)}
.status-strip__item--live{color:var(--cyan);letter-spacing:.16em}
@keyframes strip-breathe{
  0%,100%{opacity:.45;box-shadow:0 0 4px rgba(20,230,198,.4)}
  50%{opacity:1;box-shadow:0 0 14px rgba(20,230,198,.95)}
}

/* ============================================================
   页头 / 竖排仪表盘索引
   ============================================================ */
.site-header{
  position:fixed;
  top:var(--strip-h);
  left:0;
  bottom:0;
  width:var(--rail-w);
  z-index:70;
  background:linear-gradient(180deg, rgba(5,19,15,.58) 0%, rgba(5,19,15,.9) 100%);
  border-right:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .3s var(--ease), border-color .3s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:var(--panel);
  border-right-color:var(--line-strong);
}

.rail{
  display:flex;
  flex-direction:column;
  align-items:center;
  height:100%;
  padding:14px 0 16px;
  gap:12px;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}

/* ----- 品牌 ----- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
}
.brand__mark{
  flex:0 0 auto;
  width:42px;height:42px;
  display:grid;place-items:center;
  font-family:var(--font-mono);
  font-size:19px;
  font-weight:600;
  color:var(--cyan);
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:
    radial-gradient(circle at 30% 18%, rgba(20,230,198,.3), transparent 68%),
    linear-gradient(160deg,#0C2A20,#071A13);
  box-shadow:inset 0 0 0 1px rgba(20,230,198,.14), 0 0 20px -6px rgba(20,230,198,.7);
  clip-path:polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  border-radius:0;
  transition:box-shadow .3s var(--ease), color .3s var(--ease);
}
.brand:hover .brand__mark{
  color:var(--cyan-mist);
  box-shadow:inset 0 0 0 1px rgba(20,230,198,.4), 0 0 26px -4px rgba(20,230,198,.95);
}
.brand__name{
  font-family:var(--font-mono);
  font-size:9px;
  font-weight:600;
  letter-spacing:.1em;
  line-height:1.2;
  color:var(--text);
}
.brand__sub{
  font-size:10.5px;
  letter-spacing:.24em;
  line-height:1.2;
  color:var(--muted);
}
.brand__plate{
  font-family:var(--font-mono);
  font-size:8px;
  letter-spacing:.14em;
  line-height:1;
  color:var(--silver);
  padding:3px 6px;
  border:1px solid rgba(198,210,206,.5);
  border-radius:2px;
  background:linear-gradient(180deg, rgba(198,210,206,.26), rgba(198,210,206,.05));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16);
}

/* 轨道内的品牌改为竖向堆叠 */
.rail .brand{
  flex-direction:column;
  gap:5px;
  width:100%;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  text-align:center;
}
.rail .brand__name{letter-spacing:.06em}

/* ----- 移动导航按钮 ----- */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  width:44px;height:44px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:rgba(16,49,39,.6);
  transition:border-color .25s var(--ease), background .25s var(--ease);
}
.nav-toggle__bar{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform .26s var(--ease), opacity .2s var(--ease), background .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan)}
.nav-toggle:hover .nav-toggle__bar{background:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);background:rgba(20,230,198,.1)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ----- 竖排导航 ----- */
.rail-nav{
  flex:1 1 auto;
  width:100%;
  display:flex;
  justify-content:center;
  min-height:0;
}
.rail-nav__list{
  display:flex;
  flex-direction:column;
  align-items:stretch;
  gap:2px;
  width:100%;
}
.rail-nav__item{width:100%}
.rail-nav__link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  width:100%;
  padding:7px 0;
  color:var(--muted);
  transition:color .25s var(--ease), background .25s var(--ease);
}
.rail-nav__idx{
  font-family:var(--font-mono);
  font-size:8.5px;
  letter-spacing:.12em;
  line-height:1;
  opacity:.65;
  transition:opacity .25s var(--ease), color .25s var(--ease);
}
.rail-nav__label{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-size:11px;
  line-height:1.08;
  letter-spacing:.14em;
}
.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:0;
  border-radius:2px;
  background:var(--cyan);
  transform:translateY(-50%);
  transition:height .26s var(--ease), box-shadow .26s var(--ease);
}
.rail-nav__link:hover,
.rail-nav__link:focus-visible{
  color:var(--cyan);
  background:rgba(20,230,198,.06);
}
.rail-nav__link:hover::before,
.rail-nav__link:focus-visible::before{
  height:44%;
  box-shadow:0 0 10px rgba(20,230,198,.9);
}
.rail-nav__link[aria-current="page"]{
  color:var(--cyan);
  background:linear-gradient(90deg, rgba(20,230,198,.14), transparent 92%);
}
.rail-nav__link[aria-current="page"] .rail-nav__idx{opacity:1;color:var(--cyan-mist)}
.rail-nav__link[aria-current="page"]::before{
  height:62%;
  box-shadow:0 0 12px rgba(20,230,198,.95);
}

/* ----- 轨道 CTA ----- */
.rail-actions{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  padding-top:12px;
  border-top:1px solid var(--line);
}
.rail-cta{
  writing-mode:vertical-rl;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 6px;
  font-size:10.5px;
  font-weight:600;
  line-height:1;
  letter-spacing:.14em;
  color:#04120E;
  background:var(--cyan);
  border:1px solid transparent;
  border-radius:999px;
  box-shadow:0 0 18px -6px rgba(20,230,198,.9);
  transition:background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .2s var(--ease);
}
.rail-cta:hover{background:var(--cyan-mist);transform:translateY(-1px)}
.rail-cta--ghost{
  background:transparent;
  color:var(--silver);
  border-color:var(--line-strong);
  box-shadow:none;
}
.rail-cta--ghost:hover{
  background:rgba(20,230,198,.1);
  color:var(--cyan);
  border-color:var(--cyan);
}
.rail-cta--ghost[aria-pressed="true"]{
  color:var(--orange);
  border-color:var(--orange);
  background:rgba(255,106,43,.12);
}

/* ----- 移动 dock ----- */
.dock{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:65;
  grid-template-columns:repeat(4,1fr);
  background:rgba(10,33,24,.97);
  border-top:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding-bottom:env(safe-area-inset-bottom);
}
.dock__item{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  min-height:var(--dock-h);
  padding:8px 4px;
  color:var(--muted);
  border-right:1px solid var(--line-soft);
  transition:color .25s var(--ease), background .25s var(--ease);
}
.dock__item:last-child{border-right:0}
.dock__idx{
  font-family:var(--font-mono);
  font-size:8.5px;
  letter-spacing:.12em;
  opacity:.6;
}
.dock__label{font-size:11.5px;letter-spacing:.04em}
.dock__item:hover,
.dock__item:focus-visible{color:var(--cyan);background:rgba(20,230,198,.08)}
.dock__item[aria-current="page"]{
  color:var(--cyan);
  background:linear-gradient(180deg, rgba(20,230,198,.16), transparent);
}
.dock__item[aria-current="page"]::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(20,230,198,.9);
}
.dock__item{position:relative}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(40px,6vw,72px) 0 28px;
  background:linear-gradient(180deg,#071A13 0%, #05130F 100%);
  border-top:1px solid var(--line-strong);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity:.55;
}
.footer__glow{
  position:absolute;
  top:-180px;left:20%;
  width:640px;height:360px;
  pointer-events:none;
  background:radial-gradient(circle, rgba(20,230,198,.14), transparent 68%);
  filter:blur(6px);
}
.footer__inner{position:relative}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr repeat(4,1fr);
  gap:clamp(26px,3vw,48px);
  padding-bottom:clamp(28px,4vw,48px);
  border-bottom:1px solid var(--line);
}
.footer__brand{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.brand--wide{
  gap:12px;
  flex-wrap:wrap;
  align-self:flex-start;
}
.brand--wide .brand__mark{width:46px;height:46px;font-size:21px}
.brand--wide .brand__name{font-size:13px;letter-spacing:.14em}
.brand--wide .brand__sub{font-size:13px;letter-spacing:.3em}
.footer__tagline{
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
  max-width:26ch;
}
.footer__col{min-width:0}
.footer__title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--silver);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  text-transform:uppercase;
}
.footer__list{
  display:flex;
  flex-direction:column;
  gap:9px;
}
.footer__link{
  display:inline-block;
  font-size:14px;
  color:var(--muted);
  transition:color .22s var(--ease), transform .22s var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible{
  color:var(--cyan);
  transform:translateX(3px);
}
.footer__meta{
  display:inline-block;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
  word-break:break-word;
}
.footer__meta--plate{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--silver);
  padding:3px 8px;
  border:1px solid rgba(198,210,206,.28);
  border-radius:2px;
  background:linear-gradient(180deg, rgba(198,210,206,.14), rgba(198,210,206,.03));
}
.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  max-width:100%;
  padding:5px 9px;
  margin-left:-9px;
  border:1px solid transparent;
  border-radius:6px;
  text-align:left;
  transition:border-color .22s var(--ease), background .22s var(--ease);
}
.copy-btn__text{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--text);
  word-break:break-all;
}
.copy-btn__tag{
  flex:0 0 auto;
  font-size:10px;
  letter-spacing:.1em;
  color:var(--cyan);
  padding:1px 6px;
  border:1px solid rgba(20,230,198,.45);
  border-radius:2px;
  transition:color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.copy-btn:hover{border-color:var(--line-strong);background:rgba(16,49,39,.55)}
.copy-btn[data-copied="true"] .copy-btn__tag{
  color:#04120E;
  background:var(--cyan);
  border-color:var(--cyan);
}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  padding-top:22px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
}
.footer__copy--muted{color:rgba(143,166,158,.7)}

/* ============================================================
   通用组件
   ============================================================ */
.container{
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,48px);
}
.section{padding-block:clamp(32px,5vw,64px)}
.section + .section{padding-top:0}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(20,230,198,.8);
}
.section-title{
  font-family:var(--font-narrow);
  font-size:clamp(26px,3.6vw,44px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  margin-top:14px;
}
.lede{
  max-width:62ch;
  margin-top:14px;
  font-size:16px;
  line-height:1.75;
  color:var(--muted);
}

/* 网格 */
.grid{display:grid;gap:var(--gap)}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--5-7{grid-template-columns:5fr 7fr}
.grid--12{grid-template-columns:repeat(12,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}

/* 面板 */
.panel{
  position:relative;
  background:linear-gradient(160deg,var(--panel),#081A13 72%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 22px 48px -34px rgba(0,0,0,.95), inset 0 1px 0 rgba(198,210,206,.06);
}
.panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}
.panel__body{padding:clamp(18px,2.6vw,28px)}
.panel--paper{
  background:linear-gradient(170deg,#F6F1E6,#EFE8DA);
  color:#12211C;
  border-color:rgba(18,33,28,.14);
  box-shadow:0 22px 48px -34px rgba(0,0,0,.6);
}
.panel--paper .lede,
.panel--paper p{color:#3B4A44}

/* 金属铭牌 */
.plate{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--silver);
  padding:3px 9px;
  border:1px solid rgba(198,210,206,.42);
  border-radius:2px;
  background:linear-gradient(180deg, rgba(198,210,206,.22), rgba(198,210,206,.04));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.05em;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:3px;
  transition:background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .18s var(--ease), box-shadow .25s var(--ease);
}
.btn--primary{
  background:var(--cyan);
  color:#04120E;
  box-shadow:0 0 0 1px rgba(20,230,198,.35), 0 14px 34px -18px rgba(20,230,198,.9);
}
.btn--primary:hover{background:var(--cyan-mist);transform:translateY(-2px)}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--text);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(20,230,198,.08)}
.btn--cut{
  clip-path:polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  border-radius:0;
}

/* 数据带 */
.data-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:clamp(16px,3vw,40px);
  min-height:96px;
  padding:18px clamp(18px,3vw,32px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg, rgba(20,230,198,.07), transparent 62%);
}
.data-band__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
}

/* 数字 */
.stat{display:flex;flex-direction:column;gap:2px;min-width:0}
.stat__num{
  font-family:var(--font-mono);
  font-size:clamp(28px,4.4vw,56px);
  font-weight:600;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--cyan);
  text-shadow:0 0 18px rgba(20,230,198,.4), 0 0 42px rgba(134,251,232,.2);
}
.stat__unit{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--orange);
}
.stat__cap{
  margin-top:6px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.hero-num{
  font-family:var(--font-mono);
  font-size:clamp(64px,11vw,118px);
  font-weight:600;
  line-height:.9;
  letter-spacing:-.04em;
  color:var(--cyan);
  text-shadow:
    0 0 2px rgba(134,251,232,.9),
    0 0 26px rgba(20,230,198,.55),
    0 0 64px rgba(20,230,198,.25);
}

/* 分段切换 */
.seg{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  padding:5px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(16,49,39,.5);
}
.seg__btn{
  flex:1 1 auto;
  min-width:110px;
  padding:9px 16px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--muted);
  border-radius:7px;
  transition:color .22s var(--ease), background .22s var(--ease), box-shadow .22s var(--ease);
}
.seg__btn:hover{color:var(--text);background:rgba(20,230,198,.08)}
.seg__btn[aria-selected="true"]{
  color:#04120E;
  background:var(--cyan);
  box-shadow:0 8px 22px -14px rgba(20,230,198,.95);
}
.seg__panel{padding-top:20px}
.seg__panel[hidden]{display:none}

/* 图片容器 */
.figure-frame{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  background:linear-gradient(150deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 22px 48px -34px rgba(0,0,0,.95);
}
.figure-frame__media{
  position:relative;
  display:grid;
  place-items:center;
  width:100%;
  aspect-ratio:16/9;
  background:
    repeating-linear-gradient(135deg, rgba(20,230,198,.055) 0 2px, transparent 2px 14px),
    radial-gradient(120% 90% at 8% 0%, rgba(20,230,198,.18), transparent 62%),
    radial-gradient(90% 80% at 100% 100%, rgba(255,106,43,.12), transparent 60%),
    var(--panel);
  overflow:hidden;
}
.figure-frame__media--wide{aspect-ratio:21/9}
.figure-frame__media--tall{aspect-ratio:4/5}
.figure-frame__media--square{aspect-ratio:1/1}
.figure-frame__media img,
.figure-frame__media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure-frame__ph{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:rgba(198,210,206,.5);
  text-align:center;
  padding:0 16px;
}
.figure-frame__cap{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 16px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
}

/* 面包屑 */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:rgba(198,210,206,.32);
}
.breadcrumb__item a{transition:color .2s var(--ease)}
.breadcrumb__item a:hover,
.breadcrumb__item a:focus-visible{color:var(--cyan)}
.breadcrumb__item[aria-current="page"]{color:var(--text)}

/* 入场 */
.reveal[data-shown="false"]{
  opacity:0;
  transform:translateY(24px);
}
.reveal[data-shown="true"]{
  opacity:1;
  transform:none;
  transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:901px){
  body{padding-left:var(--rail-w)}
}

@media (max-width:1100px){
  .footer__grid{grid-template-columns:1fr 1fr 1fr;gap:30px}
  .footer__brand{grid-column:1 / -1}
}

@media (max-width:900px){
  body{
    padding-left:0;
    padding-top:calc(var(--strip-h) + var(--mob-header-h));
    padding-bottom:calc(var(--dock-h) + 10px);
  }

  /* 顶栏 */
  .site-header{
    top:var(--strip-h);
    left:0;right:0;bottom:auto;
    width:auto;
    height:auto;
    border-right:0;
    border-bottom:1px solid var(--line);
    background:rgba(5,19,15,.94);
  }
  .site-header[data-scrolled="true"]{
    background:var(--panel);
    border-bottom-color:var(--line-strong);
  }
  .rail{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:center;
    height:auto;
    min-height:var(--mob-header-h);
    padding:0;
    gap:0;
    overflow:visible;
  }
  .rail .brand{
    flex-direction:row;
    gap:9px;
    width:auto;
    padding:0 14px;
    height:var(--mob-header-h);
    border-bottom:0;
    border-right:1px solid var(--line);
    text-align:left;
  }
  .rail .brand__mark{width:32px;height:32px;font-size:15px}
  .rail .brand__name{font-size:10px;letter-spacing:.12em}
  .rail .brand__sub{font-size:11px;letter-spacing:.2em}
  .rail .brand__plate{font-size:7.5px;padding:2px 5px}

  .nav-toggle{
    display:flex;
    margin-left:auto;
    margin-right:12px;
    width:42px;height:42px;
    flex:0 0 auto;
  }

  /* 下拉导航面板 */
  .rail-nav{
    order:5;
    flex:0 0 100%;
    width:100%;
    display:block;
    max-height:0;
    overflow:hidden;
    background:linear-gradient(180deg,var(--panel),#061A13);
    border-top:1px solid transparent;
    transition:max-height .34s var(--ease), border-color .34s var(--ease), opacity .25s var(--ease);
    opacity:0;
  }
  .rail-nav[data-open="true"]{
    max-height:72vh;
    overflow-y:auto;
    border-top-color:var(--line);
    opacity:1;
  }
  .rail-nav__list{gap:0}
  .rail-nav__link{
    flex-direction:row;
    justify-content:flex-start;
    gap:14px;
    padding:14px 20px;
    border-bottom:1px solid var(--line-soft);
  }
  .rail-nav__idx{font-size:11px;opacity:.8}
  .rail-nav__label{
    writing-mode:horizontal-tb;
    font-size:15px;
    letter-spacing:.06em;
    line-height:1.4;
  }
  .rail-nav__link::before{
    left:0;top:0;
    width:3px;height:100%;
    transform:none;
    border-radius:0;
    opacity:0;
    transition:opacity .2s var(--ease);
  }
  .rail-nav__link:hover,
  .rail-nav__link:focus-visible{background:rgba(20,230,198,.07)}
  .rail-nav__link:hover::before,
  .rail-nav__link:focus-visible::before,
  .rail-nav__link[aria-current="page"]::before{height:100%;opacity:1}
  .rail-nav__link[aria-current="page"]{
    background:linear-gradient(90deg, rgba(20,230,198,.16), transparent 88%);
  }

  .rail-actions{display:none}

  /* 底部 dock */
  .dock{display:grid}

  /* 网格降级 */
  .grid--7-5,
  .grid--5-7,
  .grid--3{grid-template-columns:1fr}
  .grid--12{grid-template-columns:repeat(6,1fr)}

  .data-band{min-height:0;padding:16px 18px;gap:18px}
  .hero-num{font-size:clamp(52px,15vw,88px)}

  .footer__grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer__brand{grid-column:1 / -1}
  .footer__legal{font-size:10.5px;gap:8px 18px}
}

@media (max-width:560px){
  .footer__grid{grid-template-columns:1fr}
  .footer__tagline{max-width:none}
  .figure-frame__cap{font-size:10px}
  .stat__num{font-size:clamp(26px,8vw,40px)}
}

@media (max-width:360px){
  .dock__label{font-size:10.5px}
  .rail .brand__name{display:none}
}

/* ---------- 可访问性：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;
    scroll-behavior:auto !important;
  }
  .reveal[data-shown="false"]{opacity:1;transform:none}
  .status-strip__dot{animation:none;opacity:1}
  .rail-cta:hover,
  .btn--primary:hover,
  .footer__link:hover{transform:none}
}

/* ---------- 打印 ---------- */
@media print{
  .site-header,
  .dock,
  .status-strip,
  .skip-link,
  .footer__glow{display:none}
  body{padding:0;background:#fff;color:#000}
  .site-footer{background:#fff;border-top:1px solid #ccc}
}