/* =========================================================
   C7娱乐会馆 · 共享样式表  /assets/site.css
   深空蓝基底 · 蓝图网格 · 矿物色标签 · 午夜会馆沉浸感
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#05070F;
  --ink-800:#0A1230;
  --ink-700:#131C45;
  --ink-600:#1C2657;
  --paper:#F2EDE4;
  --stone:#6E7480;
  --moss:#7C9A72;
  --clay:#B9704F;
  --violet:#8B5CF6;
  --cyan:#22D3EE;
  --coral:#FF7A59;

  --bg:var(--ink-800);
  --surface:var(--ink-700);
  --text:var(--paper);
  --text-soft:#C6CBD9;
  --text-dim:#9AA1B2;
  --line:rgba(110,116,128,.30);
  --line-strong:rgba(110,116,128,.55);
  --glow-violet:rgba(139,92,246,.22);
  --glow-cyan:rgba(34,211,238,.16);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --fs-12:12px; --fs-14:14px; --fs-16:16px; --fs-18:18px;
  --fs-22:22px; --fs-30:30px; --fs-44:44px; --fs-64:64px;

  --shell-w:1160px;
  --gutter:clamp(18px,4vw,48px);
  --header-h:88px;

  --radius-s:8px;
  --radius-m:16px;
  --radius-l:26px;
  --radius-pill:999px;

  --dur:200ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}
@media (max-width:700px){ :root{ --header-h:64px; } }

/* ---------- 2. Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:calc(var(--header-h) + 16px); }
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{ margin:0; }
ul[class],ol[class]{ list-style:none; padding:0; }
img,svg,video{ display:block; max-width:100%; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-weight:800; line-height:1.15; letter-spacing:.04em; }

/* ---------- 3. 页面基底与蓝图网格 ---------- */
body{
  min-height:100vh;
  padding-top:var(--header-h);
  background-color:var(--ink-800);
  background-image:
    repeating-linear-gradient(to right, rgba(110,116,128,.075) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(to bottom, rgba(110,116,128,.055) 0 1px, transparent 1px 96px),
    radial-gradient(900px 520px at 12% -8%, var(--glow-violet), transparent 62%),
    radial-gradient(760px 460px at 88% -4%, var(--glow-cyan), transparent 60%);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:rgba(139,92,246,.42); color:#fff; }

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

/* ---------- 4. 工具与排版 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--gutter);
  position:relative;
}
.mono{ font-family:var(--font-mono); letter-spacing:.04em; }
.text-dim{ color:var(--text-dim); }
.index-num{ font-family:var(--font-mono); font-size:12px; letter-spacing:.22em; color:var(--clay); }

.eyebrow{
  display:block;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.section-title{
  font-family:var(--font-sans);
  font-size:clamp(28px,4vw,44px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:.04em;
  color:var(--paper);
}
.lede{
  max-width:34em;
  font-family:var(--font-serif);
  font-size:clamp(17px,1.6vw,21px);
  line-height:1.78;
  color:var(--text-soft);
}
.prose{ max-width:38em; font-size:17px; line-height:1.85; color:#D3D8E4; }
.prose p{ margin-bottom:1.15em; }
.prose h2{ margin:1.8em 0 .6em; font-size:26px; color:var(--paper); }
.prose h3{ margin:1.5em 0 .5em; font-size:20px; color:var(--paper); }
.prose ul,.prose ol{ margin:0 0 1.2em 1.2em; }
.prose li{ margin-bottom:.5em; }
.prose a{ color:var(--cyan); border-bottom:1px solid rgba(34,211,238,.42); }
.prose a:hover{ color:var(--coral); border-bottom-color:rgba(255,122,89,.55); }
.prose blockquote{
  margin:1.6em 0;
  padding-left:20px;
  border-left:2px solid var(--moss);
  font-family:var(--font-serif);
  color:var(--text-soft);
}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(19,28,69,.9);
  border:1px solid var(--line);
}

/* ---------- 5. 分区与网格 ---------- */
.section{ padding-block:clamp(40px,6vw,88px); }
.section--tight{ padding-block:clamp(24px,3vw,48px); }
.section__head{ margin-bottom:clamp(20px,3vw,36px); }
.section--paper{
  width:min(1240px,100% - 2*var(--gutter));
  margin-inline:auto;
  padding:clamp(28px,4vw,64px);
  border-radius:var(--radius-l);
  background:var(--paper);
  color:#141A2E;
}
.section--paper .section-title{ color:#0A1230; }
.section--paper .lede,.section--paper .prose{ color:#39415A; }

.grid{ display:grid; gap:clamp(16px,2.4vw,32px); }
.grid--7-5{ grid-template-columns:7fr 5fr; }
.grid--8-4{ grid-template-columns:8fr 4fr; }
.grid--9-3{ grid-template-columns:9fr 3fr; }
.grid--halves{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){
  .grid--7-5,.grid--8-4,.grid--9-3,.grid--halves{ grid-template-columns:1fr; }
}

.divider{
  height:1px;
  border:0;
  margin:clamp(28px,5vw,64px) 0;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}

.index-rule{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.index-rule::before{
  content:"";
  width:44px;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);
}
.index-rule::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
}

/* ---------- 6. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.4;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn--primary{
  color:#08122B;
  background:linear-gradient(120deg,var(--cyan),#7DD3FC 46%,var(--violet));
  box-shadow:0 10px 26px rgba(34,211,238,.20);
}
.btn--primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 32px rgba(255,122,89,.30);
}
.btn--quiet{
  color:#D9DDE8;
  border-color:var(--line-strong);
  background:rgba(242,237,228,.03);
}
.btn--quiet:hover{
  color:var(--paper);
  border-color:var(--cyan);
  transform:translateY(-2px);
}

/* ---------- 7. 页头 · 紧凑命令栏 ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
}
.skip-link{
  position:fixed;
  left:16px;
  top:-72px;
  z-index:120;
  padding:10px 18px;
  border-radius:0 0 12px 12px;
  background:var(--cyan);
  color:#05070F;
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
  transition:top 160ms var(--ease);
}
.skip-link:focus{ top:0; }

.cmdbar{
  position:relative;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,7,15,.95),rgba(10,18,48,.86));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled] .cmdbar{
  border-bottom-color:var(--line-strong);
  box-shadow:0 20px 44px rgba(5,7,15,.55);
}
.cmdbar__progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 58%,var(--coral));
  transition:transform 120ms linear;
}

.cmdbar__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;
  max-width:var(--shell-w);
  min-height:60px;
  margin-inline:auto;
  padding-inline:var(--gutter);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  padding:6px 4px;
  border-radius:12px;
}
.brand__mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:9px;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  line-height:1;
  color:var(--paper);
  background:linear-gradient(140deg,rgba(139,92,246,.95),rgba(34,211,238,.8));
  box-shadow:0 0 0 1px rgba(242,237,228,.16),0 8px 20px rgba(34,211,238,.20);
}
.brand__text{ display:flex; flex-direction:column; line-height:1.15; }
.brand__name{ font-size:16px; font-weight:800; letter-spacing:.06em; color:var(--paper); }
.brand__sub{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  line-height:1.5;
  letter-spacing:.16em;
  color:var(--stone);
}

/* 主导航 */
.primary-nav{ margin-inline:auto; }
.primary-nav__list{ display:flex; align-items:center; gap:2px; }
.primary-nav__item{ display:block; }
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:8px 12px;
  border-radius:var(--radius-pill);
  color:var(--text-soft);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav-link__idx{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:500;
  line-height:1;
  letter-spacing:.1em;
  color:var(--stone);
  transition:color var(--dur) var(--ease);
}
.nav-link__label{ font-size:14px; font-weight:500; letter-spacing:.04em; }
.nav-link:hover{
  color:var(--paper);
  background:rgba(139,92,246,.16);
  transform:translateY(-1px);
}
.nav-link:hover .nav-link__idx{ color:var(--cyan); }
.nav-link[aria-current="page"]{
  color:var(--paper);
  background:rgba(34,211,238,.10);
}
.nav-link[aria-current="page"] .nav-link__idx{ color:var(--cyan); }
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}

/* 命令栏动作 */
.cmdbar__actions{ display:flex; align-items:center; gap:8px; flex:none; }

/* 折叠按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  font-size:13px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--paper);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-toggle:hover{ border-color:var(--cyan); background:rgba(34,211,238,.10); }
.nav-toggle__bars{
  display:block;
  width:16px;
  height:12px;
  background-image:
    linear-gradient(var(--paper),var(--paper)),
    linear-gradient(var(--paper),var(--paper)),
    linear-gradient(var(--paper),var(--paper));
  background-repeat:no-repeat;
  background-size:16px 1.5px;
  background-position:0 0,0 5.25px,0 10.5px;
}
.nav-toggle__label{ line-height:1; }

/* 状态行 */
.cmdbar__status{
  display:flex;
  align-items:center;
  gap:9px;
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding:0 var(--gutter) 8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  line-height:1.6;
  letter-spacing:.1em;
  color:var(--stone);
}
.status-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--moss);
  box-shadow:0 0 0 4px rgba(124,154,114,.16);
  animation:none;
}

/* 左侧悬浮胶囊索引 */
.capsule-rail{
  position:fixed;
  z-index:55;
  pointer-events:none;
}
.capsule-rail__panel{ display:none; }
.capsule-rail__panel{
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:16px 9px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(19,28,69,.74);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  box-shadow:0 18px 42px rgba(5,7,15,.5);
}
.capsule-rail__hint,
.capsule-rail__section,
.capsule-rail__pct{ writing-mode:vertical-rl; }
.capsule-rail__hint{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.26em;
  color:var(--stone);
}
.capsule-rail__section{
  max-height:150px;
  overflow:hidden;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--paper);
}
.capsule-rail__pct{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:var(--cyan);
}
.capsule-rail__track{
  position:relative;
  width:2px;
  height:78px;
  border-radius:2px;
  background:var(--line);
  overflow:hidden;
}
.capsule-rail__fill{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:0;
  background:linear-gradient(0deg,var(--cyan),var(--violet));
  transition:height 120ms linear;
}
.capsule-rail__top{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  border:1px solid var(--line-strong);
  border-radius:50%;
  font-family:var(--font-mono);
  font-size:14px;
  line-height:1;
  color:var(--paper);
  background:rgba(19,28,69,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity var(--dur) var(--ease),visibility var(--dur),transform var(--dur) var(--ease),
             border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.capsule-rail__top[data-visible]{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
}
.capsule-rail__top:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  transform:translateY(-2px);
}
@media (min-width:1360px){
  .capsule-rail{
    left:20px;
    top:50%;
    transform:translateY(-50%);
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:12px;
  }
  .capsule-rail__panel{ display:flex; }
}
@media (max-width:1359px){
  .capsule-rail{ right:18px; bottom:20px; }
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,7,15,.45),var(--ink-900) 42%);
  color:#B9BFCE;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--violet),var(--cyan),transparent);
  opacity:.75;
}
.footer__inner{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding:clamp(40px,5vw,76px) var(--gutter) 28px;
}
.footer__grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr 1fr;
  gap:clamp(20px,3vw,44px);
}
.footer__brand-name{
  font-size:19px;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--paper);
}
.footer__brand-line{
  margin-top:12px;
  max-width:26em;
  font-size:14px;
  line-height:1.85;
  color:#AEB5C4;
}
.footer__update{
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.9;
  letter-spacing:.08em;
  color:var(--stone);
}
.footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--moss);
}
.footer__list{ display:flex; flex-direction:column; gap:9px; }
.footer__link{
  display:inline-block;
  font-size:14px;
  color:#AEB5C4;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer__link:hover{
  color:var(--cyan);
  border-bottom-color:rgba(34,211,238,.5);
  transform:translateX(2px);
}
.footer__contact{
  display:flex;
  flex-wrap:wrap;
  gap:10px 40px;
  margin-top:clamp(28px,4vw,48px);
  padding-top:clamp(20px,3vw,32px);
  border-top:1px solid var(--line);
}
.footer__contact-line{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  font-size:14px;
  color:#AEB5C4;
}
.footer__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--stone);
}
.footer__mono{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--paper);
}
.footer__note{
  flex:1 1 100%;
  font-size:13px;
  line-height:1.8;
  color:var(--stone);
}
.footer__base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 24px;
  margin-top:clamp(24px,3vw,40px);
  padding-top:18px;
  border-top:1px solid var(--line);
}
.footer__meta{
  font-size:12px;
  line-height:1.8;
  letter-spacing:.04em;
  color:var(--stone);
}
.footer__meta--addr{ font-family:var(--font-mono); }

@media (max-width:1024px){
  .footer__grid{ grid-template-columns:repeat(3,1fr); }
  .footer__brand{ grid-column:1 / -1; }
}
@media (max-width:640px){
  .footer__grid{ grid-template-columns:repeat(2,1fr); }
  .footer__base{ flex-direction:column; }
}

/* ---------- 9. 内容组件 ---------- */
.panel{
  padding:clamp(16px,2vw,24px);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(19,28,69,.55);
}
.card{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:linear-gradient(160deg,rgba(19,28,69,.92),rgba(10,18,48,.72));
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.45);
  box-shadow:0 18px 42px rgba(5,7,15,.55);
}
.card__meta{
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.16em;
  color:var(--stone);
}
.card__title{
  margin-bottom:8px;
  font-size:20px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--paper);
}
.card__body{ font-size:15px; line-height:1.85; color:#BEC4D2; }

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.12em;
  color:var(--text-soft);
}
.tag--moss{ border-color:rgba(124,154,114,.55); color:#AAC69F; }
.tag--clay{ border-color:rgba(185,112,79,.55); color:#DFA88C; }
.tag--violet{ border-color:rgba(139,92,246,.55); color:#C4B5FD; }

.stat{ display:flex; flex-direction:column; gap:6px; }
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(28px,3.4vw,44px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.01em;
  background:linear-gradient(120deg,var(--paper),#9FD9EA);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
}
.stat__label{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.16em;
  color:var(--stone);
}

.callout{
  position:relative;
  padding:20px 22px;
  border-left:2px solid var(--cyan);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  background:rgba(19,28,69,.6);
  font-size:15px;
  line-height:1.85;
  color:#CBD1DE;
}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--cyan);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease);
}
.link-arrow::after{
  content:"→";
  font-family:var(--font-mono);
  transition:transform var(--dur) var(--ease);
}
.link-arrow:hover{ gap:12px; color:var(--coral); }

/* 面包屑 */
.breadcrumb{ margin-bottom:20px; }
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.08em;
  color:var(--stone);
}
.breadcrumb__item{ display:inline-flex; align-items:center; gap:8px; }
.breadcrumb__link{
  color:#A7ADC0;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.breadcrumb__link:hover{ color:var(--cyan); border-bottom-color:rgba(34,211,238,.5); }
.breadcrumb__sep{ opacity:.6; }
.breadcrumb__current{ color:var(--paper); }

/* 图片容器基础规则 */
.img-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:18px;
  background:linear-gradient(150deg,var(--ink-700),var(--ink-900));
  box-shadow:inset 0 0 0 1px var(--line);
}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(160deg,var(--glow-violet),transparent 55%,var(--glow-cyan));
}
.img-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.img-frame--wide{ aspect-ratio:21 / 9; }
.img-frame--tall{ aspect-ratio:3 / 4; }
.img-frame--square{ aspect-ratio:1 / 1; }
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.06em;
  color:var(--stone);
}

/* 进入视口显现 */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 240ms ease-out,transform 240ms ease-out;
}
.reveal[data-revealed]{
  opacity:1;
  transform:none;
}

/* ---------- 10. 响应式：命令栏 ---------- */
@media (max-width:960px){
  .cmdbar__actions{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .primary-nav{
    position:fixed;
    left:var(--gutter);
    right:var(--gutter);
    top:calc(var(--header-h) - 4px);
    display:none;
    max-height:calc(100vh - var(--header-h) - 40px);
    overflow-y:auto;
    padding:14px;
    border:1px solid var(--line-strong);
    border-radius:20px;
    background:linear-gradient(180deg,rgba(19,28,69,.98),rgba(10,18,48,.98));
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    box-shadow:0 26px 64px rgba(5,7,15,.62);
    margin-inline:0;
  }
  .primary-nav[data-open]{ display:block; }
  .primary-nav__list{ flex-direction:column; align-items:stretch; gap:2px; }
  .nav-link{
    width:100%;
    justify-content:flex-start;
    padding:13px 14px;
    border-radius:12px;
    align-items:center;
  }
  .nav-link__label{ font-size:16px; }
  .nav-link__idx{ font-size:11px; }
  .nav-link[aria-current="page"]::after{ left:0; right:auto; top:8px; bottom:8px; width:2px; height:auto; }
}
@media (max-width:700px){
  .cmdbar__status{ display:none; }
  .brand__sub{ display:none; }
  .brand__mark{ width:31px; height:31px; font-size:12px; }
}

/* ---------- 11. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{ opacity:1; transform:none; }
  .btn:hover,.card:hover,.link-arrow:hover,.footer__link:hover{ transform:none; }
}