/* =========================================================
   arcade-legend-dianwan.com.cn  ·  /assets/site.css
   共享外壳：reset / tokens / 排版 / 页头 / 页脚 / 基础组件
   ========================================================= */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html,body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,address{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;}
a{color:inherit;}
table{border-collapse:collapse;width:100%;}
hr{border:0;}

/* ---------- Tokens ---------- */
:root{
  --ink:#0B0C12;
  --obsidian:#171029;
  --violet:#8B4BFF;
  --cyan:#2BE7D6;
  --lava:#FF6B2C;
  --ruby:#B3164B;
  --teal:#0E3B3A;
  --neon:#FFD166;
  --sand:#F5F1E8;
  --mist:#9AA0B4;
  --green:#3DD68C;

  --glass:rgba(245,241,232,.08);
  --glass-strong:rgba(245,241,232,.14);
  --line:rgba(43,231,214,.28);
  --line-soft:rgba(245,241,232,.12);

  --radius:14px;
  --bar-h:64px;

  --font-display:"Noto Sans SC Black","Source Han Sans SC Heavy","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","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","SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Base ---------- */
html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--bar-h) + 20px);
  -webkit-text-size-adjust:100%;
}
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 560px at 8% -12%, rgba(139,75,255,.30), transparent 62%),
    radial-gradient(880px 480px at 102% -4%, rgba(43,231,214,.16), transparent 58%),
    radial-gradient(900px 720px at 50% 122%, rgba(179,22,75,.20), transparent 62%);
  background-attachment:fixed;
  color:var(--sand);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(to bottom,rgba(245,241,232,.022) 0 1px,transparent 1px 3px);
  opacity:.75;
}
#main-content{display:block;position:relative;z-index:1;scroll-margin-top:calc(var(--bar-h) + 20px);}

::selection{background:rgba(139,75,255,.45);color:#fff;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}

/* ---------- 排版基元 ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.18;letter-spacing:.01em;text-align:left;}
h1{font-size:clamp(2rem,4.6vw,3.6rem);}
h2{font-size:clamp(1.5rem,2.6vw,1.9rem);}
h3{font-size:1.15rem;}
p{max-width:74ch;}

.display-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2rem,4.6vw,3.6rem);
  line-height:1.08;
  color:var(--sand);
  text-shadow:0 0 22px rgba(139,75,255,.42),0 0 3px rgba(43,231,214,.28);
}
.display-title--outline{
  color:rgba(11,12,18,.35);
  -webkit-text-stroke:1px var(--violet);
  text-shadow:0 0 26px rgba(139,75,255,.55);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.lede{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(1.02rem,1.5vw,1.22rem);
  line-height:1.72;
  color:rgba(245,241,232,.84);
}
.note{
  font-family:var(--font-serif);
  font-size:13.5px;
  line-height:1.66;
  color:var(--mist);
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- 容器与栅格 ---------- */
.container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:24px;}
.container--narrow{max-width:840px;}
.container--wide{max-width:1440px;}

.grid{display:grid;gap:28px;}
.grid--7-3{grid-template-columns:minmax(0,7fr) minmax(0,3fr);}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr);}
.grid--4-5-3{grid-template-columns:minmax(0,4fr) minmax(0,5fr) minmax(0,3fr);}
.grid--2-8{grid-template-columns:minmax(0,2fr) minmax(0,8fr);}

.stack{display:flex;flex-direction:column;gap:var(--stack-gap,24px);}

.rule-y{
  height:1px;
  margin:38px 0;
  background:linear-gradient(90deg,rgba(43,231,214,.6),rgba(43,231,214,.08) 58%,transparent);
}

/* ---------- 章节头 ---------- */
.section-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) minmax(0,26ch);
  gap:14px 26px;
  align-items:end;
  margin-bottom:30px;
}
.section-head__num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(2.2rem,5vw,3.4rem);
  line-height:.85;
  color:rgba(139,75,255,.32);
  -webkit-text-stroke:1px var(--violet);
  text-shadow:0 0 20px rgba(139,75,255,.35);
}
.section-head__title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,2.6vw,1.9rem);
  margin:0;
}
.section-head__note{
  font-family:var(--font-serif);
  font-size:13.5px;
  line-height:1.62;
  color:var(--mist);
  padding-bottom:4px;
}

/* ---------- 内容层 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  padding:clamp(18px,2.4vw,26px);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.glass:hover{
  background:var(--glass-strong);
  border-color:var(--line);
  transform:translateY(-2px);
}
.surface{
  background:var(--sand);
  color:#14151C;
  border:1px solid rgba(11,12,18,.10);
  border-radius:var(--radius);
  padding:clamp(22px,3vw,34px);
}
.surface h1,.surface h2,.surface h3,.surface h4{color:#101218;}
.surface .prose{color:#22242E;}
.surface .prose a{color:#6B2BD9;border-bottom-color:rgba(107,43,217,.5);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:14px;
  letter-spacing:.04em;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--sm{padding:8px 15px;font-size:13px;}
.btn--lava{
  background:linear-gradient(180deg,#FF8F55,var(--lava));
  color:#200B02;
  box-shadow:0 0 0 1px rgba(255,107,44,.55),0 8px 22px -10px rgba(255,107,44,.95);
}
.btn--lava:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,107,44,.8),0 12px 26px -10px rgba(255,107,44,1);}
.btn--ghost{
  background:var(--glass);
  border-color:var(--line);
  color:var(--sand);
}
.btn--ghost:hover{background:var(--glass-strong);border-color:var(--cyan);color:#EFFFFC;transform:translateY(-2px);}
.btn--cyan{
  background:linear-gradient(180deg,#63F5E6,var(--cyan));
  color:#04211F;
  box-shadow:0 0 0 1px rgba(43,231,214,.55),0 8px 22px -12px rgba(43,231,214,.9);
}
.btn--cyan:hover{transform:translateY(-2px);}

/* ---------- 标签 / 徽章 / 刻度 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  border:1px solid var(--line-soft);
  border-radius:999px;
  background:var(--glass);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(245,241,232,.9);
}
.tag--forbid{color:var(--neon);border-color:rgba(255,209,102,.55);background:rgba(255,209,102,.09);}
.tag--live{color:var(--green);border-color:rgba(61,214,140,.5);background:rgba(61,214,140,.10);}
.tag--ruby{color:#FFC6DA;border-color:rgba(179,22,75,.7);background:rgba(179,22,75,.24);}

.badge{
  display:inline-grid;
  place-items:center;
  min-width:32px;
  padding:4px 9px;
  border-radius:8px;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:13px;
  background:linear-gradient(180deg,#FF9159,var(--lava));
  color:#200B02;
  box-shadow:0 0 0 1px rgba(255,107,44,.55);
}
.badge--violet{
  background:linear-gradient(180deg,#A871FF,var(--violet));
  color:#0E0520;
  box-shadow:0 0 0 1px rgba(139,75,255,.65);
}

.scale{display:flex;align-items:center;gap:5px;}
.scale__seg{
  flex:1;
  height:8px;
  border-radius:3px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  transition:background-color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.scale__seg.is-on{
  background:var(--cyan);
  border-color:var(--cyan);
  box-shadow:0 0 12px -2px rgba(43,231,214,.95);
}

/* ---------- 图文容器（供页面阶段放置图片） ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  background-color:var(--obsidian);
  background-image:
    radial-gradient(120% 90% at 15% 0%, rgba(139,75,255,.32), transparent 62%),
    radial-gradient(110% 80% at 100% 100%, rgba(14,59,58,.85), transparent 60%),
    linear-gradient(150deg, rgba(139,75,255,.18), rgba(11,12,18,.9));
  aspect-ratio:16/9;
}
.media-frame img,.media-frame video{width:100%;height:100%;object-fit:cover;display:block;}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--table{aspect-ratio:4/3;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:3/4;max-width:420px;}
.media-frame--grid::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.45;
  background-image:
    linear-gradient(rgba(245,241,232,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(245,241,232,.06) 1px,transparent 1px);
  background-size:22px 22px;
}
.media-frame__caption{
  position:absolute;
  left:14px;
  bottom:14px;
  padding:5px 11px;
  border-radius:999px;
  background:rgba(11,12,18,.72);
  border:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--sand);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:9px;}
.breadcrumbs li+li::before{content:"/";color:var(--violet);}
.breadcrumbs a{color:var(--mist);text-decoration:none;transition:color .16s var(--ease);}
.breadcrumbs a:hover{color:var(--cyan);}

/* ---------- 章节索引（页内目录） ---------- */
.index-link{
  display:flex;
  align-items:baseline;
  gap:11px;
  padding:9px 13px;
  border:1px solid transparent;
  border-radius:10px;
  font-size:14px;
  color:var(--mist);
  text-decoration:none;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.index-link:hover{color:var(--sand);background:var(--glass);transform:translateY(-2px);}
.index-link.is-active,
.index-link[aria-current="true"]{
  color:var(--sand);
  background:var(--glass-strong);
  border-color:var(--line);
}
.index-link__num{font-family:var(--font-mono);font-size:11px;color:var(--violet);}

/* ---------- 正文块 ---------- */
.prose{
  max-width:70ch;
  font-size:17px;
  line-height:1.75;
  color:rgba(245,241,232,.88);
}
.prose p{margin-bottom:1.15em;}
.prose h2,.prose h3{margin:1.6em 0 .6em;line-height:1.24;}
.prose h2{font-size:clamp(1.4rem,2.4vw,1.85rem);}
.prose h3{font-size:1.12rem;}
.prose a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(43,231,214,.5);}
.prose a:hover{background:rgba(43,231,214,.12);}
.prose ul,.prose ol{margin-bottom:1.15em;padding-left:1.3em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.42em;}
.prose blockquote{
  margin:1.4em 0;
  padding:16px 20px;
  border-left:2px solid var(--ruby);
  border-radius:0 var(--radius) var(--radius) 0;
  background:var(--glass);
  font-family:var(--font-serif);
  color:rgba(245,241,232,.94);
}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  padding:.1em .42em;
  border-radius:5px;
  background:rgba(139,75,255,.18);
  color:#E8DCFF;
}
.prose strong{color:var(--sand);font-weight:800;}

/* ---------- 渐显 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(6px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* =========================================================
   页头：紧凑命令栏
   ========================================================= */
.skip-link{
  position:absolute;
  left:14px;
  top:-70px;
  z-index:90;
  padding:10px 16px;
  border-radius:0 0 10px 10px;
  background:var(--cyan);
  color:#04211F;
  font-family:var(--font-display);
  font-weight:800;
  font-size:13px;
  text-decoration:none;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:0;}

.commandbar{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,12,18,.84);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
}
.commandbar__inner{
  position:relative;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  grid-template-areas:"brand nav side";
  align-items:center;
  gap:12px 20px;
  width:100%;
  max-width:1360px;
  min-height:var(--bar-h);
  margin-inline:auto;
  padding:8px 24px;
}
.commandbar__progress{
  position:absolute;
  left:0;
  bottom:-1px;
  height:2px;
  width:0;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 55%,var(--lava));
  box-shadow:0 0 14px rgba(43,231,214,.7);
  transition:width .12s linear;
}

/* 字标 */
.brand{
  grid-area:brand;
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  text-decoration:none;
  color:var(--sand);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border:1px solid var(--violet);
  border-radius:9px;
  background:linear-gradient(150deg,rgba(139,75,255,.42),rgba(43,231,214,.14));
  box-shadow:0 0 16px -5px rgba(139,75,255,1),inset 0 0 0 1px rgba(11,12,18,.55);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:15px;
  color:var(--cyan);
}
.brand__text{display:flex;flex-direction:column;line-height:1.06;}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  letter-spacing:.07em;
  color:var(--sand);
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--mist);
}
.brand--foot .brand__mark{width:40px;height:40px;font-size:17px;}
.brand--foot .brand__name{font-size:20px;}

/* 栏目索引 */
.navbar{grid-area:nav;min-width:0;}
.navbar__list{display:flex;align-items:center;gap:2px;}
.navbar__link{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:9px 12px;
  border:1px solid transparent;
  border-radius:10px;
  color:rgba(245,241,232,.78);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.02em;
  text-decoration:none;
  white-space:nowrap;
  transition:color .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.navbar__link:hover{
  color:var(--sand);
  background:var(--glass);
  border-color:var(--line);
  transform:translateY(-2px);
}
.navbar__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--violet);
}
.navbar__link[aria-current="page"]{
  color:#062B29;
  background:linear-gradient(180deg,#5FF3E5,var(--cyan));
  border-color:var(--cyan);
  box-shadow:0 0 20px -8px rgba(43,231,214,1);
}
.navbar__link[aria-current="page"] .navbar__idx{color:#0A3C39;}

/* 右侧状态与入口 */
.cmdbar__side{
  grid-area:side;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:16px;
}
.statusline{display:flex;align-items:center;gap:14px;flex-wrap:nowrap;}
.statusline__item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.02em;
  color:var(--mist);
  white-space:nowrap;
}
.dot{
  flex:none;
  width:6px;
  height:6px;
  border-radius:50%;
  background:currentColor;
  box-shadow:0 0 9px currentColor;
}
.dot--cyan{color:var(--cyan);}
.dot--violet{color:var(--violet);}
.dot--lava{color:var(--lava);}
.dot--green{color:var(--green);}

/* 移动导航按钮 */
.nav-toggle{
  grid-area:toggle;
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--glass);
  color:var(--sand);
  font-family:var(--font-display);
  font-weight:800;
  font-size:13px;
  cursor:pointer;
  transition:background-color .16s var(--ease),border-color .16s var(--ease);
}
.nav-toggle:hover{background:var(--glass-strong);border-color:var(--cyan);}
.nav-toggle__bars{display:grid;gap:4px;width:16px;}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:var(--cyan);transition:transform .16s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg);}

/* =========================================================
   页脚
   ========================================================= */
.sitefoot{
  position:relative;
  z-index:1;
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,59,58,.55),rgba(23,16,41,.9) 42%,rgba(11,12,18,.99));
}
.sitefoot__inner{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1.6fr) minmax(0,1.05fr);
  gap:52px 44px;
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding:64px 24px 48px;
}
.sitefoot__brandcol{display:flex;flex-direction:column;align-items:flex-start;gap:16px;}
.sitefoot__summary{
  font-family:var(--font-serif);
  font-size:14px;
  line-height:1.7;
  color:rgba(245,241,232,.82);
  max-width:34ch;
}
.sitefoot__status{
  display:flex;
  gap:9px;
  max-width:38ch;
  padding:12px 14px;
  border:1px solid var(--line-soft);
  border-radius:12px;
  background:var(--glass);
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.68;
  color:var(--mist);
}
.sitefoot__status .dot{margin-top:6px;}

.sitefoot__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.sitefoot__col{min-width:0;}
.sitefoot__coltitle{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:11.5px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.sitefoot__list{display:flex;flex-direction:column;gap:9px;}
.sitefoot__link{
  display:inline-block;
  font-size:14px;
  color:rgba(245,241,232,.76);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.sitefoot__link:hover{color:var(--sand);border-bottom-color:var(--cyan);transform:translateX(2px);}

.sitefoot__contact{min-width:0;}
.sitefoot__address{font-style:normal;display:flex;flex-direction:column;gap:11px;margin-bottom:16px;}
.sitefoot__row{
  display:grid;
  grid-template-columns:42px minmax(0,1fr);
  gap:10px;
  font-size:13px;
  line-height:1.6;
  color:rgba(245,241,232,.82);
  overflow-wrap:anywhere;
}
.sitefoot__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--violet);
  padding-top:2px;
}
.sitefoot__service{
  font-family:var(--font-serif);
  font-size:13px;
  line-height:1.65;
  color:var(--mist);
  margin-bottom:16px;
  max-width:30ch;
}

.sitefoot__base{border-top:1px solid var(--line-soft);}
.sitefoot__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding:20px 24px 26px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
}
.sitefoot__legal a{
  color:var(--mist);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.sitefoot__legal a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1240px){
  .statusline__item--wide{display:none;}
}
@media (max-width:1120px){
  .navbar__idx{display:none;}
  .navbar__link{padding:9px 10px;font-size:13px;}
}
@media (max-width:1024px){
  .commandbar__inner{
    grid-template-columns:minmax(0,1fr) auto auto;
    grid-template-areas:
      "brand side toggle"
      "nav nav nav";
    gap:10px 12px;
    padding:10px 18px;
  }
  .nav-toggle{display:inline-flex;}
  .navbar{display:none;}
  .navbar[data-open]{
    display:block;
    width:100%;
    padding:10px;
    border:1px solid var(--line);
    border-radius:14px;
    background:rgba(23,16,41,.95);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    box-shadow:0 24px 40px -28px rgba(0,0,0,.9);
    animation:panelIn .18s var(--ease);
  }
  .navbar[data-open] .navbar__list{flex-direction:column;align-items:stretch;gap:4px;}
  .navbar[data-open] .navbar__link{
    justify-content:flex-start;
    padding:12px 14px;
    font-size:15px;
  }
  .navbar[data-open] .navbar__idx{display:inline;}
  .statusline{display:none;}
  .cmdbar__side{gap:10px;}

  .sitefoot{margin-top:72px;}
  .sitefoot__inner{
    grid-template-columns:minmax(0,1fr);
    gap:40px;
    padding:52px 20px 36px;
  }
  .grid--7-3,.grid--8-4,.grid--4-5-3,.grid--2-8{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:760px){
  body{font-size:16px;}
  .container{padding-inline:18px;}
  .section-head{grid-template-columns:auto minmax(0,1fr);gap:10px 18px;}
  .section-head__note{grid-column:1 / -1;padding-bottom:0;}
  .sitefoot__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .sitefoot__legal{padding:18px 20px 24px;gap:8px 18px;}
  .rule-y{margin:30px 0;}
}
@media (max-width:520px){
  .brand__tag{display:none;}
  .brand__name{font-size:15.5px;}
  .nav-toggle__label{display:none;}
  .nav-toggle{padding:9px 12px;}
  .btn--sm{padding:8px 12px;font-size:12.5px;}
  .sitefoot__cols{grid-template-columns:minmax(0,1fr);}
  .media-frame--tall{max-width:none;}
}

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

/* =========================================================
   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;
  }
  [data-reveal]{opacity:1;transform:none;}
  .glass:hover,.btn:hover,.navbar__link:hover,.sitefoot__link:hover,.index-link:hover{transform:none;}
}