/* ==========================================================================
   狗威赛场 — 共享样式表 /assets/site.css
   夜场墨蓝 × 夜灯绿 × 奶油纸面 × 荧光黄绿 × 信号橙红
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --night-blue:#0B1B2B;
  --lamp-green:#0E3B2E;
  --lamp-green-deep:#0A2C22;
  --cream:#F2EAD9;
  --brown-black:#241A14;
  --neon:#C6F24E;
  --signal:#FF5A2B;
  --press-red:#B23A2E;
  --mist:#7E93A8;
  --line:#3A4A58;
  --gold:#E4B04A;

  --cream-ink:#3A2E24;
  --cream-muted:#6B5B4C;
  --cream-line:rgba(36,26,20,.22);
  --body-ink:#E3E0D5;
  --soft-ink:#B9CCC4;

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

  --content-max:1280px;
  --gutter:24px;
  --rail-w:220px;
  --header-h:76px;
  --shadow-panel:0 6px 18px rgba(0,0,0,.35);
  --shadow-soft:0 2px 8px rgba(0,0,0,.22);
  --ease:cubic-bezier(.32,.72,.3,1);
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:92px;
}

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

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

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

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

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

table{ width:100%; border-collapse:collapse; }

[hidden]{ display:none !important; }

:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:2px;
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--night-blue);
  background-image:
    radial-gradient(1100px 460px at 10% -10%, rgba(14,59,46,.70), transparent 62%),
    radial-gradient(880px 420px at 94% 2%, rgba(14,59,46,.34), transparent 60%);
  background-repeat:no-repeat;
  color:var(--body-ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* ---------- 4. 通用工具 ---------- */
.visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.text-muted{ color:var(--mist); }
.text-neon{ color:var(--neon); }
.text-signal{ color:var(--signal); }
.text-gold{ color:var(--gold); }

.skip-link{
  position:fixed;
  top:-72px;
  left:16px;
  z-index:200;
  padding:10px 18px;
  background:var(--neon);
  color:#10180A;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  transition:top .18s var(--ease);
}
.skip-link:focus{ top:12px; }

/* ---------- 5. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,#0E3B2E 0%,#0A2C22 100%);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  max-width:var(--content-max);
  margin:0 auto;
  padding:12px var(--gutter);
  transition:padding .25s var(--ease);
}

/* 品牌签名区 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.brand__mark{
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  line-height:1;
  letter-spacing:.06em;
  color:var(--cream);
  padding:9px 11px;
  background:var(--press-red);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}

.brand__text{
  display:flex;
  flex-direction:column;
  gap:2px;
  line-height:1.15;
}

.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  letter-spacing:.06em;
  color:var(--cream);
}

.brand__sub{
  font-size:10px;
  letter-spacing:.2em;
  color:var(--mist);
  max-height:16px;
  transition:opacity .2s var(--ease), max-height .2s var(--ease);
}

/* 横向轨道导航 */
.site-nav{
  position:relative;
  flex:1 1 auto;
  min-width:0;
  height:42px;
  overflow:hidden;
  border-top:1px solid rgba(58,74,88,.85);
  transition:border-color .2s var(--ease), height .25s var(--ease), opacity .2s var(--ease);
}

.site-nav__list{
  display:flex;
  align-items:stretch;
  justify-content:center;
  height:42px;
}

.site-nav__link{
  display:flex;
  align-items:center;
  padding:0 13px;
  font-size:14px;
  letter-spacing:.06em;
  color:#9FB6AC;
  white-space:nowrap;
  transition:color .18s var(--ease);
}

.site-nav__link:hover{ color:var(--cream); }

.site-nav__link[aria-current="page"]{
  color:var(--cream);
  font-weight:600;
}

.site-nav__indicator{
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(198,242,78,.55);
  transform:translateX(0);
  transition:transform .2s var(--ease), width .2s var(--ease);
  pointer-events:none;
}

/* 右侧更新时间与动作区 */
.header-status{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:0 0 auto;
}

.header-status__text{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
  white-space:nowrap;
}

.status-dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 4px rgba(255,90,43,.16);
  animation:pulse 2s ease-in-out infinite;
}

@keyframes pulse{
  0%,100%{ opacity:1; transform:scale(1); }
  50%{ opacity:.42; transform:scale(.8); }
}

.header-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid var(--line);
  color:var(--cream);
  font-size:12px;
  letter-spacing:.16em;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}

.nav-toggle__bars{
  position:relative;
  width:16px;
  height:10px;
  flex:0 0 auto;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:1.5px;
  background:var(--neon);
  transition:transform .22s var(--ease), top .22s var(--ease);
}

.nav-toggle__bars::before{ top:0; }
.nav-toggle__bars::after{ top:8px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{
  top:4px;
  transform:rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{
  top:4px;
  transform:rotate(-45deg);
}

.nav-toggle__text{
  font-size:11px;
  letter-spacing:.18em;
}

/* 抽屉遮罩（移动端启用） */
.nav-scrim{ display:none; }

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  font-size:13px;
  font-weight:700;
  line-height:1;
  letter-spacing:.06em;
  white-space:nowrap;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}

.btn--primary{ background:var(--neon); color:#10180A; }
.btn--primary:hover{ background:#D9FA77; }

.btn--ghost{ border-color:var(--line); color:var(--cream); }
.btn--ghost:hover{ border-color:var(--neon); color:var(--neon); }

.btn--signal{ background:var(--signal); color:#1A0702; }
.btn--signal:hover{ background:#FF7449; }

.btn--sm{ padding:8px 13px; font-size:12px; }

/* ---------- 7. 页脚 ---------- */
.site-footer{
  margin-top:80px;
  background:var(--cream);
  color:var(--brown-black);
  border-top:1px solid var(--brown-black);
  box-shadow:inset 0 4px 0 0 var(--neon);
}

.footer-inner{
  max-width:var(--content-max);
  margin:0 auto;
  padding:44px var(--gutter) 28px;
}

.footer-masthead{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 32px;
  padding-bottom:20px;
  border-bottom:1px solid var(--cream-line);
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.footer-brand__link{
  font-family:var(--font-display);
  font-weight:900;
  font-size:26px;
  line-height:1.1;
  letter-spacing:.02em;
  color:var(--brown-black);
  transition:color .18s var(--ease);
}
.footer-brand__link:hover{ color:var(--press-red); }

.footer-brand__line{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--cream-muted);
}

.footer-update{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--cream-muted);
}

.footer-columns{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px 40px;
  padding:26px 0 6px;
}

.footer-col__title{
  margin-bottom:14px;
  padding-bottom:8px;
  font-family:var(--font-display);
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--press-red);
  border-bottom:1px solid var(--cream-line);
}

.footer-col__list{
  display:flex;
  flex-direction:column;
  gap:9px;
}

.footer-col__list a{
  font-size:14px;
  color:var(--cream-ink);
  word-break:break-word;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}

.footer-col__list a:hover{
  color:var(--press-red);
  border-bottom-color:var(--press-red);
}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid var(--cream-line);
  font-size:12px;
  line-height:1.7;
  color:var(--cream-muted);
}

.footer-legal{ max-width:760px; }

.footer-meta{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  white-space:nowrap;
}

/* ---------- 8. 布局骨架 ---------- */
.content{
  width:100%;
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 var(--gutter);
}

.section{ padding:52px 0; }
.section--tight{ padding:26px 0; }

.stack{
  display:flex;
  flex-direction:column;
  gap:32px;
}
.stack--sm{ gap:16px; }

.grid{
  display:grid;
  gap:24px;
}
.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }

.grid--stagger > *:nth-child(2n){ margin-top:22px; }
.grid--stagger > *:nth-child(3n){ margin-top:10px; }

.layout-split{
  display:grid;
  grid-template-columns:var(--rail-w) minmax(0,1fr);
  gap:36px;
  align-items:start;
}

.rule{
  height:1px;
  border:0;
  background:var(--line);
  margin:32px 0;
}
.rule--cream{ background:var(--cream-line); }

/* ---------- 9. 联赛侧边轨道 ---------- */
.rail{
  position:sticky;
  top:var(--header-h);
  align-self:start;
  background:rgba(14,59,46,.62);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  padding:14px 0;
}

.rail__title{
  padding:0 18px 12px;
  margin-bottom:10px;
  border-bottom:1px solid rgba(58,74,88,.75);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--gold);
}

.rail__list{ display:flex; flex-direction:column; }

.rail__item{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 18px;
  font-size:14px;
  color:#9FB6AC;
  cursor:pointer;
  transition:color .18s var(--ease), background-color .18s var(--ease);
}

.rail__item:hover{ color:var(--cream); }

.rail__item.is-active,
.rail__item[aria-current="page"]{
  color:var(--cream);
  background:rgba(198,242,78,.08);
}

.rail__item.is-active::before,
.rail__item[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:2px;
  background:var(--neon);
}

.rail__count{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--mist);
}

/* ---------- 10. 面板与卡片 ---------- */
.panel{
  position:relative;
  background:var(--cream);
  color:var(--brown-black);
  border:1px solid rgba(36,26,20,.5);
  box-shadow:var(--shadow-panel);
  padding:28px clamp(20px,3vw,36px);
}

.panel::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--press-red);
}

.panel::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:22px;
  height:22px;
  background:linear-gradient(225deg, rgba(36,26,20,.16) 0 48%, transparent 48%);
  pointer-events:none;
}

.panel + .panel{ margin-top:32px; }

.panel--night{
  background:var(--lamp-green);
  color:#DCE7E1;
  border-color:var(--line);
}

.panel--night::after{
  background:linear-gradient(225deg, rgba(198,242,78,.24) 0 48%, transparent 48%);
}

.card{
  position:relative;
  background:rgba(14,59,46,.5);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  padding:20px;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}

.card:hover{
  border-color:var(--neon);
  transform:translateY(-4px);
}

/* ---------- 11. 标题与文本 ---------- */
.section-head{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:26px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}

.section-head::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-1px;
  width:64px;
  height:2px;
  background:var(--neon);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--gold);
}

.panel .eyebrow,
.site-footer .eyebrow{ color:var(--press-red); }

.panel--night .eyebrow{ color:var(--gold); }

.title-xl{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(32px,5vw,64px);
  line-height:1.02;
  letter-spacing:-.015em;
  color:var(--cream);
}

.title-lg{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(24px,3.2vw,38px);
  line-height:1.12;
  letter-spacing:-.01em;
  color:var(--cream);
}

.title-md{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(18px,2vw,22px);
  line-height:1.3;
  color:var(--cream);
}

.panel .title-xl,
.panel .title-lg,
.panel .title-md{ color:var(--brown-black); }

.panel--night .title-xl,
.panel--night .title-lg,
.panel--night .title-md{ color:var(--cream); }

.lede{
  font-family:var(--font-serif);
  font-size:clamp(17px,1.6vw,19px);
  line-height:1.85;
  color:inherit;
  opacity:.88;
}

.prose{
  display:flex;
  flex-direction:column;
  gap:16px;
  max-width:68ch;
}

.prose p{
  font-size:15.5px;
  line-height:1.8;
}

/* ---------- 12. 数据与状态 ---------- */
.num{
  font-family:var(--font-mono);
  font-weight:600;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}

.num--hero{
  display:block;
  font-size:clamp(56px,12vw,140px);
  line-height:.86;
  color:var(--neon);
}

.stat{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.stat__value{
  font-family:var(--font-mono);
  font-weight:600;
  font-size:clamp(24px,2.6vw,34px);
  line-height:1;
  letter-spacing:.02em;
  color:var(--neon);
}

.stat__label{
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
}

.panel .stat__label,
.panel--night .stat__label{ color:var(--cream-muted); }

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
  border:1px solid var(--line);
}

.tag--live{
  color:var(--signal);
  border-color:rgba(255,90,43,.6);
}

.tag--gold{
  color:var(--gold);
  border-color:rgba(228,176,74,.55);
}

/* ---------- 13. 时间轴 ---------- */
.timeline{
  border-left:1px solid var(--line);
  padding-left:0;
}

.timeline__item{
  position:relative;
  padding:0 0 22px 22px;
}

.timeline__item::before{
  content:"";
  position:absolute;
  left:-4px;
  top:7px;
  width:7px;
  height:7px;
  background:var(--mist);
}

.timeline__item.is-current::before{
  background:var(--signal);
  box-shadow:0 0 0 4px rgba(255,90,43,.16);
}

/* ---------- 14. 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:linear-gradient(135deg,#0E3B2E 0%,#0B1B2B 100%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}

.media > img{
  width:100%;
  height:100%;
  object-fit:cover;
}

.media--wide{ aspect-ratio:21 / 9; }
.media--tall{ aspect-ratio:3 / 4; }
.media--square{ aspect-ratio:1 / 1; }
.media--slant{ clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 28px)); }

.media__tag{
  position:absolute;
  left:0;
  top:0;
  padding:6px 12px;
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  background:var(--signal);
  color:#1A0702;
}

.media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:24px 16px 12px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cream);
  background:linear-gradient(180deg, rgba(11,27,43,0) 0%, rgba(11,27,43,.88) 78%);
}

/* ---------- 15. 可展开内容组 ---------- */
.disclosure{
  background:rgba(14,59,46,.42);
  border:1px solid var(--line);
  transition:border-color .22s var(--ease);
}

.disclosure + .disclosure{ margin-top:10px; }

.disclosure[data-open]{ border-color:var(--neon); }

.disclosure__trigger{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:16px 18px;
  text-align:left;
  font-size:15px;
  font-weight:600;
  color:#DCE7E1;
}

.disclosure__index{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gold);
}

.disclosure__mark{
  position:relative;
  flex:0 0 auto;
  width:12px;
  height:12px;
  margin-left:auto;
}

.disclosure__mark::before,
.disclosure__mark::after{
  content:"";
  position:absolute;
  background:var(--neon);
  transition:transform .22s var(--ease);
}

.disclosure__mark::before{
  left:0;
  top:50%;
  width:12px;
  height:1.5px;
  transform:translateY(-50%);
}

.disclosure__mark::after{
  top:0;
  left:50%;
  width:1.5px;
  height:12px;
  transform:translateX(-50%);
}

.disclosure[data-open] .disclosure__mark::after{
  transform:translateX(-50%) scaleY(0);
}

.disclosure__panel{
  padding:0 18px 18px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--soft-ink);
}

.disclosure[data-open] .disclosure__panel > *{
  animation:fadeUp .3s var(--ease) both;
}

@keyframes fadeUp{
  from{ opacity:0; transform:translateY(6px); }
  to{ opacity:1; transform:none; }
}

/* ---------- 16. 数据表 ---------- */
.data-table{
  background:rgba(11,27,43,.5);
  border:1px solid var(--line);
  font-size:14px;
}

.data-table th,
.data-table td{
  padding:11px 14px;
  text-align:left;
  border-bottom:1px solid rgba(58,74,88,.6);
}

.data-table thead th{
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
  background:rgba(14,59,46,.6);
}

.data-table tbody tr:hover{ background:rgba(198,242,78,.06); }

.data-table td.num{ color:var(--neon); }

.panel .data-table{
  background:rgba(255,255,255,.4);
  border-color:var(--cream-line);
  color:var(--brown-black);
}

.panel .data-table th,
.panel .data-table td{ border-bottom-color:var(--cream-line); }

.panel .data-table thead th{
  color:var(--cream-muted);
  background:rgba(36,26,20,.06);
}

.panel .data-table td.num{ color:var(--press-red); }

/* ---------- 17. 横向主题带 ---------- */
.theme-band{
  display:flex;
  overflow-x:auto;
  background:linear-gradient(90deg, rgba(14,59,46,.85), rgba(11,27,43,.85));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  scrollbar-width:thin;
}

.theme-band__item{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:14px 22px;
  font-size:13px;
  color:#A9BFC6;
  white-space:nowrap;
  border-right:1px solid rgba(58,74,88,.6);
  transition:color .18s var(--ease), background-color .18s var(--ease);
}

.theme-band__item:hover{ color:var(--cream); }

.theme-band__item.is-active,
.theme-band__item[aria-current="page"]{
  color:var(--cream);
  background:rgba(198,242,78,.08);
}

/* ---------- 18. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}

.breadcrumb a{
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}

.breadcrumb a:hover{
  color:var(--neon);
  border-bottom-color:var(--neon);
}

.breadcrumb__sep{
  color:var(--line);
  user-select:none;
}

/* ---------- 19. 入场动画 ---------- */
html.js-enabled [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}

html.js-enabled [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 20. 桌面态收窄页头 ---------- */
@media (min-width:901px){
  .site-header.is-condensed .header-inner{
    padding-top:9px;
    padding-bottom:9px;
  }
  .site-header.is-condensed .brand__sub{
    display:none;
  }
  .site-header.is-condensed .btn--ghost{
    display:none;
  }
}

/* ---------- 21. 平板 ---------- */
@media (max-width:1024px){
  .grid--3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .layout-split{ grid-template-columns:minmax(0,1fr); gap:24px; }
  .rail{ position:static; }
  .rail__title{ padding:0 14px 10px; }
  .rail__list{
    flex-direction:row;
    overflow-x:auto;
    scrollbar-width:thin;
  }
  .rail__item{
    flex:0 0 auto;
    padding:9px 14px;
    border-right:1px solid rgba(58,74,88,.5);
    white-space:nowrap;
  }
  .rail__item.is-active::before,
  .rail__item[aria-current="page"]::before{
    top:auto;
    left:0;
    right:0;
    bottom:0;
    width:auto;
    height:2px;
  }
}

/* ---------- 22. 移动端抽屉导航 ---------- */
@media (max-width:900px){
  :root{ --header-h:60px; }

  .header-inner{
    gap:12px;
    padding:10px 16px;
  }

  .brand__mark{ font-size:17px; padding:8px 10px; }
  .brand__sub{ display:none; }
  .brand__name{ font-size:16px; }

  .header-status{ display:none; }

  .header-actions{ margin-left:auto; }
  .header-actions .btn--ghost{ display:none; }
  .header-actions .btn--primary{ padding:10px 14px; font-size:12px; }

  .nav-toggle{ display:inline-flex; }

  .site-nav{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:80;
    height:auto;
    max-height:82vh;
    overflow-y:auto;
    padding:18px 18px 28px;
    background:linear-gradient(180deg,#0E3B2E 0%,#0A2C22 100%);
    border-top:2px solid var(--neon);
    box-shadow:0 -20px 44px rgba(0,0,0,.55);
    transform:translateY(104%);
    visibility:hidden;
    transition:transform .3s var(--ease), visibility .3s var(--ease);
  }

  .site-nav[data-open]{
    transform:translateY(0);
    visibility:visible;
  }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    height:auto;
    gap:0;
  }

  .site-nav__link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:15px 6px;
    font-size:17px;
    border-bottom:1px solid rgba(58,74,88,.55);
  }

  .site-nav__link::after{
    content:"›";
    font-size:18px;
    color:var(--line);
  }

  .site-nav__link[aria-current="page"]::after{ color:var(--neon); }

  .site-nav__indicator{ display:none; }

  .nav-scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:55;
    background:rgba(11,27,43,.72);
    opacity:0;
    pointer-events:none;
    transition:opacity .25s var(--ease);
  }

  .nav-scrim.is-active{
    opacity:1;
    pointer-events:auto;
  }

  html.nav-open{ overflow:hidden; }
}

/* ---------- 23. 手机 ---------- */
@media (max-width:720px){
  :root{ --gutter:16px; }

  body{ font-size:15.5px; }

  .section{ padding:38px 0; }
  .grid--2,
  .grid--3{ grid-template-columns:minmax(0,1fr); }

  .grid--stagger > *:nth-child(2n),
  .grid--stagger > *:nth-child(3n){ margin-top:0; }

  .panel{ padding:22px 18px; }
  .panel::after{ width:16px; height:16px; }

  .footer-inner{ padding:34px var(--gutter) 24px; }
  .footer-columns{
    grid-template-columns:minmax(0,1fr);
    gap:22px;
  }
  .footer-masthead{ align-items:flex-start; }
  .footer-meta{ white-space:normal; }
}

@media (max-width:420px){
  .nav-toggle__text{ display:none; }
  .header-actions .btn--primary{ padding:10px 12px; }
}

/* ---------- 24. 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;
  }

  .status-dot{ animation:none; opacity:1; }

  html.js-enabled [data-reveal]{
    opacity:1;
    transform:none;
  }

  .card:hover{ transform:none; }
}