/* ==========================================================================
   欧宝娱乐主站 · 共享样式表 /assets/site.css
   网格：12 列 / 间距 24px / 最大 1320px / 4px 基线
   ========================================================================== */

/* ---------- 01 Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}

/* ---------- 02 设计变量 ---------- */
:root{
  --ink-green-900:#0B1F1A;
  --moss-800:#16302A;
  --slate-600:#74807A;
  --bone-050:#F2EFE6;
  --flare-orange:#FF6A1F;
  --volt-blue:#2FD4FF;
  --clay-600:#B4593A;
  --verdict-yellow:#F2C94C;
  --grid-line:#28403A;
  --paper-000:#FBFAF6;

  --bone-85:rgba(242,239,230,.86);
  --bone-70:rgba(242,239,230,.72);
  --bone-45:rgba(242,239,230,.45);
  --line-soft:rgba(40,64,58,.78);
  --flare-soft:rgba(255,106,31,.14);
  --volt-soft:rgba(47,212,255,.12);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --col-gap:24px;
  --wrap-max:1320px;
  --header-h:84px;
  --radius-pill:999px;
  --shadow-deep:0 18px 48px rgba(0,0,0,.42);
}

/* ---------- 03 页面基座 ---------- */
body{
  min-height:100vh;
  padding-top:var(--header-h);
  background-color:var(--ink-green-900);
  background-image:
    repeating-linear-gradient(90deg,rgba(40,64,58,.52) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(0deg,rgba(40,64,58,.44) 0 1px,transparent 1px 96px),
    radial-gradient(1100px 620px at 84% -6%,rgba(47,212,255,.10),transparent 62%),
    radial-gradient(900px 560px at 2% 14%,rgba(255,106,31,.085),transparent 60%);
  background-attachment:fixed;
  color:var(--bone-050);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.1;letter-spacing:-.01em}
p{overflow-wrap:break-word}
::selection{background:var(--flare-orange);color:var(--ink-green-900)}
#main-content,[id="main-content"]{scroll-margin-top:calc(var(--header-h) + 12px)}
[data-section]{scroll-margin-top:calc(var(--header-h) + 18px)}

/* ---------- 04 焦点与可见性 ---------- */
:focus-visible{outline:2px solid var(--volt-blue);outline-offset:2px}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

/* ---------- 05 布局工具 ---------- */
.wrap{width:min(var(--wrap-max),100% - 48px);margin-inline:auto}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--col-gap)}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-12{grid-column:span 12}

/* ---------- 06 排版原子 ---------- */
.display-1{font-family:var(--font-display);font-size:clamp(34px,6vw,64px);font-weight:900;line-height:1.02;letter-spacing:-.02em}
.display-2{font-family:var(--font-display);font-size:clamp(26px,4.2vw,40px);font-weight:800;line-height:1.08}
.display-3{font-family:var(--font-display);font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.2}
.eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:400;line-height:1;letter-spacing:.16em;text-transform:uppercase;color:var(--volt-blue)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.lead{font-size:20px;line-height:1.5;color:var(--bone-85);max-width:34em}
.muted{color:var(--slate-600)}
.accent-orange{color:var(--flare-orange)}
.accent-blue{color:var(--volt-blue)}

/* ---------- 07 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:120;
  transform:translateY(-200%);
  padding:12px 18px;
  background:var(--volt-blue);color:var(--ink-green-900);
  font-family:var(--font-sans);font-size:14px;font-weight:700;line-height:1;
  transition:transform .18s ease;
}
.skip-link:focus-visible{transform:translateY(0);outline-color:var(--paper-000)}

/* ---------- 08 头部：悬浮胶囊导航 ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:90;pointer-events:none}
.read-progress{position:absolute;inset:0 0 auto;height:2px;background:rgba(116,128,122,.22)}
.read-progress__fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--volt-blue),var(--flare-orange))}
.header-shell{width:min(1240px,100% - 28px);margin-inline:auto;padding-top:10px;pointer-events:none}
.pill-nav{
  pointer-events:auto;position:relative;
  display:flex;align-items:center;gap:8px;width:100%;
  padding:7px 8px 7px 10px;
  background:rgba(19,42,36,.9);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-deep);
  transition:padding .24s ease,background-color .24s ease;
}
.pill-nav__brand{display:flex;align-items:center;gap:10px;padding:2px;min-width:0}
.pill-nav__mark{
  flex:none;display:grid;place-items:center;width:36px;height:36px;
  background:linear-gradient(135deg,rgba(255,106,31,.24) 0 50%,rgba(47,212,255,.18) 50% 100%);
  border:1px solid var(--grid-line);
  color:var(--flare-orange);font-family:var(--font-mono);font-size:14px;font-weight:700;line-height:1;
  transition:width .24s ease,height .24s ease;
}
.pill-nav__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.pill-nav__name{font-family:var(--font-display);font-size:15px;font-weight:800;line-height:1.1;white-space:nowrap}
.pill-nav__sub{font-family:var(--font-mono);font-size:11px;line-height:1.1;letter-spacing:.06em;color:var(--slate-600);white-space:nowrap}
.pill-nav__list{display:none;align-items:center;gap:2px;margin-left:auto}
.pill-nav__link{
  display:block;padding:9px 13px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;line-height:1.2;color:var(--bone-70);white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.pill-nav__link:hover{color:var(--bone-050);background:var(--volt-soft)}
.pill-nav__link[aria-current="page"]{color:var(--ink-green-900);background:var(--flare-orange);font-weight:700}
.pill-nav__link[aria-current="page"]:hover{background:#FF8347;color:var(--ink-green-900)}
.pill-nav__search{
  display:none;align-items:center;
  padding:9px 14px;border:1px solid rgba(47,212,255,.42);border-radius:var(--radius-pill);
  font-family:var(--font-mono);font-size:12px;line-height:1;letter-spacing:.1em;color:var(--volt-blue);white-space:nowrap;
  transition:background-color .18s ease;
}
.pill-nav__search:hover{background:rgba(47,212,255,.14)}
.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;margin-left:auto;
  padding:9px 14px;border:1px solid var(--line-soft);border-radius:var(--radius-pill);
  color:var(--bone-050);font-family:var(--font-sans);font-size:13px;font-weight:700;line-height:1;letter-spacing:.06em;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--volt-blue);color:var(--volt-blue)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.pill-nav[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.pill-nav[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.pill-nav[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 滚动收缩态 */
.site-header[data-compact] .pill-nav{padding:4px 6px 4px 8px}
.site-header[data-compact] .pill-nav__mark{width:30px;height:30px;font-size:12px}
.site-header[data-compact] .pill-nav__sub{display:none}
.site-header[data-compact] .pill-nav__link{padding:7px 12px;font-size:13px}

/* 移动端展开 */
@media(max-width:999px){
  .pill-nav{flex-wrap:wrap;border-radius:20px}
  .pill-nav__list{order:3;width:100%}
  .pill-nav[data-open] .pill-nav__list{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    margin:10px 0 2px;padding-top:10px;border-top:1px solid var(--grid-line);
  }
  .pill-nav[data-open] .pill-nav__link{padding:12px 14px;border-radius:10px;font-size:15px}
  .pill-nav__name{font-size:14px}
}
@media(max-width:400px){
  .nav-toggle__text{display:none}
  .pill-nav__sub{display:none}
}
@media(min-width:1000px){
  .header-shell{width:min(1240px,100% - 40px);padding-top:14px}
  .pill-nav__list{display:flex;margin-right:4px}
  .pill-nav__search{display:inline-flex}
  .nav-toggle{display:none}
}

/* ---------- 09 坐标索引 ---------- */
.index-rail{
  position:fixed;left:18px;top:50%;transform:translateY(-50%);z-index:60;
  display:none;flex-direction:column;gap:12px;
  padding:14px 0 14px 14px;border-left:1px solid var(--line-soft);
}
.index-rail__link{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;line-height:1;letter-spacing:.08em;color:var(--slate-600);
  transition:color .18s ease;
}
.index-rail__link::before{content:"";width:14px;height:1px;background:currentColor;transition:width .18s ease}
.index-rail__link:hover{color:var(--bone-050)}
.index-rail__link[aria-current="true"]{color:var(--flare-orange)}
.index-rail__link[aria-current="true"]::before{width:26px;background:var(--flare-orange)}
@media(min-width:1280px){.index-rail{display:flex}}

/* ---------- 10 章节与色带 ---------- */
.section-band{display:block;width:100%;height:6px;background:var(--grid-line)}
.section-band--full{width:100vw;margin-left:calc(50% - 50vw)}
.section-band--flare{background:linear-gradient(90deg,var(--flare-orange) 0 18%,rgba(255,106,31,.18) 18% 100%)}
.section-band--volt{background:linear-gradient(90deg,var(--volt-blue) 0 18%,rgba(47,212,255,.16) 18% 100%)}
.section-band--clay{background:linear-gradient(90deg,var(--clay-600) 0 18%,rgba(180,89,58,.2) 18% 100%)}
.section-band--yellow{background:linear-gradient(90deg,var(--verdict-yellow) 0 18%,rgba(242,201,76,.18) 18% 100%)}
.story-section{position:relative;padding-block:64px}
.section-head{
  display:grid;grid-template-columns:auto 1fr auto;align-items:end;gap:20px;
  padding-bottom:18px;border-bottom:1px solid var(--line-soft);
}
.section-head__index{
  font-family:var(--font-mono);font-size:clamp(36px,6vw,96px);font-weight:700;line-height:.82;letter-spacing:-.05em;
  color:rgba(116,128,122,.42);transition:color .24s ease;
}
.section-head__title{font-family:var(--font-display);font-size:clamp(24px,3.2vw,40px);font-weight:800;line-height:1.04}
.section-head__note{
  font-family:var(--font-mono);font-size:12px;line-height:1.5;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate-600);text-align:right;
}
.story-section.is-current .section-head__index,
.section-head.is-current .section-head__index{color:var(--flare-orange)}
@media(max-width:767px){
  .story-section{padding-block:44px}
  .section-head{grid-template-columns:1fr;gap:8px;align-items:start}
  .section-head__note{text-align:left}
}

/* ---------- 11 卡片 ---------- */
.card{
  position:relative;display:block;padding:20px;
  background:var(--moss-800);border:1px solid var(--line-soft);
  transition:border-color .2s ease,transform .2s ease;
}
.card::before{content:"";position:absolute;top:-1px;left:-1px;width:38px;height:2px;background:var(--flare-orange)}
.card:hover{border-color:rgba(47,212,255,.5)}
.card--archive{background-image:linear-gradient(150deg,rgba(180,89,58,.14),transparent 62%)}
.card--data{background-image:linear-gradient(150deg,rgba(47,212,255,.1),transparent 60%)}
.card__kicker{font-family:var(--font-mono);font-size:11px;line-height:1;letter-spacing:.14em;text-transform:uppercase;color:var(--slate-600)}
.card__title{margin-top:10px;font-family:var(--font-display);font-size:20px;font-weight:700;line-height:1.25}
.card__meta{margin-top:12px;font-family:var(--font-mono);font-size:12px;line-height:1.6;color:var(--slate-600)}
.card__value{font-family:var(--font-mono);font-size:28px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}

/* ---------- 12 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border:1px solid transparent;border-radius:0;
  font-family:var(--font-sans);font-size:14px;font-weight:700;line-height:1;letter-spacing:.03em;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn::after{content:"→";font-family:var(--font-mono);font-size:13px;line-height:1}
.btn--flare{background:var(--flare-orange);color:var(--ink-green-900)}
.btn--flare:hover{background:#FF8347}
.btn--volt{background:var(--volt-blue);color:var(--ink-green-900)}
.btn--volt:hover{background:#71E0FF}
.btn--ghost{border-color:var(--line-soft);color:var(--bone-050)}
.btn--ghost:hover{border-color:var(--volt-blue);color:var(--volt-blue);background:var(--volt-soft)}
.btn--quiet{padding:0;font-weight:700;color:var(--volt-blue)}
.btn--quiet:hover{color:var(--flare-orange)}
.btn--block{display:flex;width:100%}

/* ---------- 13 标签与筛选 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 9px;
  border:1px solid transparent;font-family:var(--font-mono);font-size:12px;line-height:1.2;letter-spacing:.04em;white-space:nowrap;
}
.tag--flare{color:var(--flare-orange);background:rgba(255,106,31,.12);border-color:rgba(255,106,31,.45)}
.tag--volt{color:var(--volt-blue);background:rgba(47,212,255,.1);border-color:rgba(47,212,255,.4)}
.tag--clay{color:#E28C68;background:rgba(180,89,58,.16);border-color:rgba(180,89,58,.55)}
.tag--yellow{color:var(--ink-green-900);background:var(--verdict-yellow);border-color:var(--verdict-yellow)}
.tag--mute{color:var(--slate-600);border-color:var(--line-soft)}
.chip-set{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:8px 13px;border:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12px;line-height:1;letter-spacing:.06em;color:var(--bone-70);cursor:pointer;
  transition:color .16s ease,border-color .16s ease,background-color .16s ease;
}
.chip:hover{border-color:var(--volt-blue);color:var(--bone-050)}
.chip[aria-pressed="true"]{background:var(--volt-soft);border-color:var(--volt-blue);color:var(--volt-blue)}

/* ---------- 14 媒体容器 ---------- */
.media-frame{
  position:relative;display:block;width:100%;aspect-ratio:16/9;overflow:hidden;
  background:var(--moss-800);border:1px solid var(--line-soft);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,31,26,0) 55%,rgba(11,31,26,.72) 100%);
}
.media-frame>img,.media-frame>svg,.media-frame>video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--field{aspect-ratio:3/2}
.media-frame--portrait{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tilt{clip-path:polygon(0 0,100% 0,100% 87%,0 97%)}
.media-frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;padding:8px 12px;
  background:rgba(11,31,26,.84);
  font-family:var(--font-mono);font-size:11px;line-height:1;letter-spacing:.1em;text-transform:uppercase;color:var(--slate-600);
}
.media-frame__stamp{
  position:absolute;top:10px;right:10px;z-index:2;padding:5px 9px;
  background:rgba(11,31,26,.8);border:1px solid rgba(255,106,31,.5);color:var(--flare-orange);
  font-family:var(--font-mono);font-size:11px;line-height:1;letter-spacing:.08em;
}

/* ---------- 15 表格 / 图例 / 时间轴 ---------- */
.data-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:14px;font-variant-numeric:tabular-nums}
.data-table caption{
  caption-side:top;text-align:left;padding-bottom:10px;
  font-family:var(--font-mono);font-size:12px;line-height:1.4;letter-spacing:.08em;text-transform:uppercase;color:var(--slate-600);
}
.data-table th,.data-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line-soft)}
.data-table thead th{font-size:12px;font-weight:400;letter-spacing:.1em;text-transform:uppercase;color:var(--slate-600)}
.data-table tbody tr:nth-child(even){background:rgba(40,64,58,.32)}
.data-table tbody tr:hover{background:rgba(47,212,255,.08)}
.legend{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--font-mono);font-size:12px;line-height:1.4;letter-spacing:.06em;color:var(--slate-600)}
.legend__item{display:inline-flex;align-items:center;gap:7px}
.legend__swatch{width:12px;height:12px;flex:none;border:1px solid rgba(255,255,255,.16)}
.legend__swatch--flare{background:var(--flare-orange)}
.legend__swatch--volt{background:var(--volt-blue)}
.legend__swatch--clay{background:var(--clay-600)}
.legend__swatch--yellow{background:var(--verdict-yellow)}
.timeline{position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--grid-line)}
.timeline__item{position:relative;padding-bottom:22px}
.timeline__item::before{
  content:"";position:absolute;left:-26px;top:6px;width:10px;height:10px;
  background:var(--ink-green-900);border:2px solid var(--flare-orange);
}

/* ---------- 16 面包屑与正文 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;line-height:1.5;letter-spacing:.08em;text-transform:uppercase;color:var(--slate-600);
}
.breadcrumbs a{transition:color .16s ease}
.breadcrumbs a:hover{color:var(--volt-blue)}
.breadcrumbs__sep{color:rgba(116,128,122,.5)}
.breadcrumbs [aria-current="page"]{color:var(--bone-70)}
.prose{max-width:38em;font-size:16px;line-height:1.78;color:var(--bone-85)}
.prose>*+*{margin-top:1.1em}
.prose h2{font-family:var(--font-display);font-size:clamp(20px,2.2vw,28px);font-weight:800;color:var(--bone-050);margin-top:1.8em}
.prose h3{font-family:var(--font-sans);font-size:17px;font-weight:900;letter-spacing:.01em;color:var(--bone-050)}
.prose ul,.prose ol{display:grid;gap:.5em;padding-left:1.2em}
.prose ul li{list-style:none;position:relative}
.prose ul li::before{content:"";position:absolute;left:-1.1em;top:.72em;width:8px;height:2px;background:var(--flare-orange)}
.prose ol{list-style:decimal}
.prose strong{color:var(--bone-050)}
.prose a{color:var(--volt-blue);border-bottom:1px solid rgba(47,212,255,.4)}
.prose blockquote{
  padding:22px 26px;border-left:4px solid var(--clay-600);
  background:var(--paper-000);color:var(--ink-green-900);
  font-family:var(--font-display);font-size:18px;line-height:1.6;
}
.prose code{font-family:var(--font-mono);font-size:14px;padding:2px 6px;background:rgba(40,64,58,.6);color:var(--volt-blue)}

/* ---------- 17 页脚 ---------- */
.site-footer{position:relative;margin-top:112px;background:var(--moss-800);border-top:1px solid var(--line-soft)}
.footer-band{height:6px;background:linear-gradient(90deg,var(--flare-orange) 0 26%,var(--volt-blue) 26% 58%,var(--clay-600) 58% 82%,var(--verdict-yellow) 82% 100%)}
.footer-shell{padding:56px 0 32px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand{padding-right:8px}
.footer-brand__link{display:inline-flex;align-items:center;gap:12px}
.footer-brand__logo{
  display:grid;place-items:center;width:42px;height:42px;
  background:linear-gradient(135deg,rgba(255,106,31,.24) 0 50%,rgba(47,212,255,.18) 50% 100%);
  border:1px solid var(--grid-line);
  color:var(--flare-orange);font-family:var(--font-mono);font-size:16px;font-weight:700;line-height:1;
}
.footer-brand__name{font-family:var(--font-display);font-size:20px;font-weight:800;line-height:1.1}
.footer-brand__line{margin-top:14px;max-width:30ch;font-size:14px;line-height:1.6;color:var(--bone-70)}
.footer-brand__meta{margin-top:12px;font-family:var(--font-mono);font-size:12px;line-height:1.6;letter-spacing:.06em;color:var(--slate-600)}
.footer-brand__year{margin-top:18px;font-family:var(--font-mono);font-size:12px;line-height:1.6;letter-spacing:.08em;color:var(--slate-600)}
.footer-col__title{
  padding-bottom:12px;border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12px;font-weight:400;line-height:1;letter-spacing:.16em;text-transform:uppercase;color:var(--volt-blue);
}
.footer-col__list{display:grid;gap:10px;margin-top:14px}
.footer-col__list a{font-size:14px;line-height:1.4;color:var(--bone-70);transition:color .16s ease}
.footer-col__list a:hover{color:var(--flare-orange)}
.footer-col__note{margin-top:12px;font-family:var(--font-mono);font-size:12px;line-height:1.7;letter-spacing:.02em;color:var(--slate-600)}
.footer-col--contact .footer-col__list a{color:var(--volt-blue)}
.footer-col--contact .footer-col__list a:hover{color:var(--flare-orange)}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:14px 28px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
}
.footer-legal__note{max-width:62ch;font-size:13px;line-height:1.7;color:var(--bone-70)}
.footer-legal__icp{font-family:var(--font-mono);font-size:12px;line-height:1.6;letter-spacing:.08em;color:var(--slate-600)}

/* ---------- 18 响应式 ---------- */
@media(min-width:720px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:span 2}
}
@media(min-width:1080px){
  .footer-grid{grid-template-columns:1.5fr repeat(4,minmax(0,1fr));gap:28px}
  .footer-brand{grid-column:auto}
}
@media(max-width:1023px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}
  .span-2,.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-10,.span-12{grid-column:span 6}
}
@media(max-width:767px){
  body{background-attachment:scroll}
}
@media(max-width:639px){
  :root{--header-h:76px;--col-gap:14px}
  .wrap{width:min(var(--wrap-max),100% - 28px)}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .span-2,.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-10,.span-12{grid-column:span 2}
  .site-footer{margin-top:72px}
  .footer-shell{padding:40px 0 26px}
  .card{padding:16px}
}

/* ---------- 19 动效偏好 ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
}