/* ==========================================================================
   assets/site.css — 大发彩票站 共享外壳
   墨蓝档案底色 / 切角面板 / 刻度框景 / 等宽索引
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#0A1A2E;
  --ink-800:#0E2036;
  --ink-700:#12273F;
  --ink-500:#24405F;
  --gray-400:#6E7783;
  --gray-200:#A8B0B8;
  --paper-100:#F2EFE7;
  --cinnabar-500:#C2402E;
  --cinnabar-300:#E4624B;
  --gold-400:#D6A94C;
  --jade-500:#2F8F79;
  --jade-300:#57B49B;
  --moss-400:#6E7F5C;
  --clay-500:#A9603C;

  --ink-soft:rgba(36,64,95,.7);
  --ink-veil:rgba(10,26,46,.82);
  --text-soft:#C9D1D8;

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --shell:1240px;
  --gutter:clamp(16px,4vw,32px);
  --cut:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.22s;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion: no-preference){ html{scroll-behavior:smooth} }
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.95;
  color:var(--paper-100);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 520px at 10% -6%, rgba(36,64,95,.55), transparent 72%),
    radial-gradient(720px 460px at 102% 4%, rgba(47,143,121,.10), transparent 70%),
    repeating-linear-gradient(0deg, rgba(36,64,95,.14) 0 1px, transparent 1px 108px);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--gold-400);outline-offset:3px;border-radius:2px}
#main-content{scroll-margin-top:120px}

/* ---------- 3. 中文排版层级 ---------- */
h1,h2,h3,h4{font-weight:700;line-height:1.24;letter-spacing:-.012em}
h1{font-size:clamp(30px,4.6vw,54px);letter-spacing:-.02em;font-stretch:semi-condensed}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:clamp(18px,2vw,22px)}
p{max-width:74ch}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.mono{letter-spacing:.06em}
.kicker{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--gray-200)}
.lede{font-size:clamp(15px,1.2vw,17px);line-height:2;color:var(--text-soft);max-width:64ch}
.note{font-size:13px;line-height:1.85;color:var(--gray-200)}
.note--boxed{padding:14px 16px;border-left:2px solid var(--clay-500);background:rgba(169,96,60,.09);max-width:70ch}
.meta-line{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--gray-400)}

/* ---------- 4. 布局 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--narrow{max-width:880px}
.site-main{display:block;padding-top:clamp(4px,1.2vw,14px)}
.section{padding-block:clamp(46px,7vw,92px)}
.section--tight{padding-block:clamp(26px,4vw,50px)}
.section__head{display:grid;gap:14px;margin-bottom:clamp(22px,3vw,38px);max-width:78ch}
.section__title{color:var(--paper-100)}
.section__lede{font-size:15px;line-height:2;color:var(--gray-200);max-width:66ch}
.section__body{display:grid;gap:clamp(18px,2.4vw,28px)}
.divider{height:1px;background:linear-gradient(to right,var(--ink-500),rgba(36,64,95,0))}
.stack{display:grid;gap:18px}
.stack--sm{display:grid;gap:8px}
.stack--lg{display:grid;gap:34px}
.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-rail{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(20px,2.6vw,30px)}
@media (min-width:1024px){
  .grid-rail{grid-template-columns:200px minmax(0,1fr) 264px;align-items:start}
  .grid-rail__aside{grid-column:1}
  .grid-rail__main{grid-column:2}
  .grid-rail__note{grid-column:3}
}
@media (max-width:820px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 5. 编号章节索引行 ---------- */
.index-line{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.index-line__num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(22px,2.6vw,32px);font-weight:700;color:var(--clay-500);line-height:1}
.index-line__rule{flex:1 1 40px;height:1px;min-width:32px;background:linear-gradient(to right,var(--ink-500),rgba(36,64,95,0))}
.index-line__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--gray-200)}

/* ---------- 6. 切角面板 ---------- */
.panel{
  --line-color:var(--ink-500);
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:var(--ink-700);
  border:1px solid var(--line-color);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.panel::before,.panel::after{
  content:"";position:absolute;width:var(--cut);height:var(--cut);pointer-events:none;
}
.panel::before{
  top:-1px;left:-1px;
  background:linear-gradient(135deg,transparent 46%,var(--line-color) 46%,var(--line-color) 54%,transparent 54%);
}
.panel::after{
  bottom:-1px;right:-1px;
  background:linear-gradient(135deg,transparent 46%,var(--line-color) 46%,var(--line-color) 54%,transparent 54%);
}
.panel:hover{transform:translateY(-2px)}
.panel--accent{--line-color:var(--gold-400)}
.panel--paper{background:var(--paper-100);color:var(--ink-900);--line-color:rgba(10,26,46,.38)}
.panel--paper .panel__title,.panel--paper .panel__meta{color:var(--ink-900)}
.panel--paper .note,.panel--paper .meta-line{color:#4A5560}
.panel--flush{padding:0}
.panel__head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.panel__title{font-size:17px;font-weight:700;letter-spacing:.01em}
.panel__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--gray-200);text-transform:uppercase}
.panel__body{display:grid;gap:12px}
.panel__foot{margin-top:16px;padding-top:14px;border-top:1px dashed rgba(36,64,95,.9)}

/* ---------- 7. 框景窗口与刻度 ---------- */
.frame{
  position:relative;
  padding:clamp(24px,3.6vw,48px);
  border:1px solid var(--ink-500);
  background:linear-gradient(180deg,rgba(18,39,63,.72),rgba(10,26,46,.34));
}
.frame::before,.frame::after{
  content:"";position:absolute;left:0;right:0;height:7px;pointer-events:none;
  background-image:repeating-linear-gradient(to right,var(--ink-500) 0 1px,transparent 1px 16px);
  opacity:.95;
}
.frame::before{top:0}
.frame::after{bottom:0}
.frame--tight{padding:clamp(16px,2.2vw,26px)}
.frame__label{
  position:absolute;
  padding:0 8px;
  background:var(--ink-900);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gray-200);
}
.frame__label--tl{top:-10px;left:16px}
.frame__label--tr{top:-10px;right:16px}
.frame__label--bl{bottom:-10px;left:16px}
.frame__label--br{bottom:-10px;right:16px}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:11px 20px;
  border:1px solid var(--ink-500);
  border-radius:2px;
  font-size:14px;line-height:1.4;letter-spacing:.02em;
  color:var(--paper-100);
  background:transparent;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--gold-400);color:var(--gold-400)}
.btn--primary{background:var(--cinnabar-500);border-color:var(--cinnabar-500);color:#FFF6F2;font-weight:600}
.btn--primary:hover{background:var(--cinnabar-300);border-color:var(--cinnabar-300);color:#2A0D08}
.btn--ghost:hover{background:var(--ink-700);color:var(--paper-100);border-color:var(--ink-500)}
.btn--quiet{padding:0;border:0;color:var(--gold-400);font-family:var(--font-mono);font-size:13px;letter-spacing:.1em}
.btn--quiet::after{content:"→";transition:transform var(--dur) var(--ease)}
.btn--quiet:hover{transform:none;color:var(--gold-400)}
.btn--quiet:hover::after{transform:translateX(4px)}

/* ---------- 9. 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  border:1px solid var(--ink-500);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gray-200);
}
.tag--paper{background:var(--paper-100);color:var(--ink-900);border-color:transparent}
.tag--jade{color:var(--jade-300);border-color:rgba(87,180,155,.5)}
.tag--gold{color:var(--gold-400);border-color:rgba(214,169,76,.55)}
.tag--clay{color:#D08A63;border-color:rgba(169,96,60,.65)}
.tag--moss{color:#9DAC88;border-color:rgba(110,127,92,.75)}

/* ---------- 10. 数据组件 ---------- */
.stat{display:grid;gap:4px}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gray-200)}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:700;font-size:clamp(26px,3.4vw,42px);line-height:1.08;color:var(--paper-100)}
.stat__unit{font-family:var(--font-sans);font-size:14px;font-weight:500;color:var(--gray-200);margin-left:6px}
.stat__hint{font-size:12px;color:var(--gray-400)}
.stat--gold .stat__value{color:var(--gold-400)}
.stat--jade .stat__value{color:var(--jade-300)}
.stat--cinnabar .stat__value{color:var(--cinnabar-300)}

.data-list{display:grid}
.data-list__row{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px dashed rgba(36,64,95,.9);font-size:14px}
.data-list__row:last-child{border-bottom:0}
.data-list__key{color:var(--gray-200)}
.data-list__val{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--paper-100)}
.data-list__val--up{color:var(--jade-300)}
.data-list__val--down{color:var(--cinnabar-300)}

.table-wrap{overflow-x:auto;border:1px solid var(--ink-500);background:rgba(18,39,63,.6)}
.table{min-width:520px;font-size:14px}
.table th,.table td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(36,64,95,.8)}
.table thead th{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gray-200);background:rgba(10,26,46,.7)}
.table tbody tr{transition:background-color var(--dur) var(--ease)}
.table tbody tr:hover{background:rgba(36,64,95,.38)}
.table .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--paper-100)}

.bar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12px;color:var(--gray-200)}
.bar__track{position:relative;height:6px;background:rgba(36,64,95,.7);overflow:hidden}
.bar__fill{display:block;height:100%;width:0;background:var(--jade-500);transition:width .4s var(--ease)}
.bar__fill--gold{background:var(--gold-400)}
.bar__fill--cinnabar{background:var(--cinnabar-500)}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;color:var(--gray-200)}
.breadcrumb__link{color:var(--gray-200);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb__link:hover{color:var(--paper-100);border-bottom-color:var(--gold-400)}
.breadcrumb__sep{color:var(--ink-500)}
.breadcrumb [aria-current="page"]{color:var(--paper-100)}

/* ---------- 12. 媒体容器（供页面阶段放置图片） ---------- */
.media{display:block}
.media__inner{
  position:relative;
  overflow:hidden;
  border:1px solid var(--ink-500);
  aspect-ratio:16/9;
  background-color:var(--ink-800);
  background-image:
    linear-gradient(rgba(36,64,95,.42) 1px,transparent 1px),
    linear-gradient(90deg,rgba(36,64,95,.42) 1px,transparent 1px);
  background-size:100% 34px,34px 100%;
}
.media--wide .media__inner{aspect-ratio:21/9}
.media--square .media__inner{aspect-ratio:1/1}
.media--tall .media__inner{aspect-ratio:3/4}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{margin-top:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--gray-200)}

/* ---------- 13. 工具类 ---------- */
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:50%;top:-70px;transform:translateX(-50%);
  z-index:200;padding:10px 20px;
  background:var(--paper-100);color:var(--ink-900);
  border-radius:0 0 6px 6px;font-size:13px;font-weight:600;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 14. 页头：悬浮胶囊 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:16px var(--gutter) 10px;
  background:linear-gradient(to bottom,var(--ink-900) 56%,rgba(10,26,46,.88) 78%,rgba(10,26,46,0));
  transition:padding .25s var(--ease);
}
.site-header[data-state="compact"]{padding-top:8px;padding-bottom:4px}
.site-header__bar{
  position:relative;
  display:flex;align-items:center;gap:16px;
  max-width:var(--shell);margin-inline:auto;
  padding:10px 14px 10px 16px;
  border:1px solid var(--ink-500);
  border-radius:999px;
  background:rgba(18,39,63,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 22px 44px -32px rgba(0,0,0,.95);
  transition:padding .25s var(--ease),background-color .25s var(--ease);
}
.site-header[data-state="compact"] .site-header__bar{padding-block:6px;background:rgba(18,39,63,.96)}
.site-header__tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand__glyph{
  position:relative;display:grid;place-items:center;flex:0 0 34px;
  width:34px;height:34px;
  border:1px solid var(--gold-400);
  color:var(--gold-400);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  background:linear-gradient(135deg,rgba(214,169,76,.16),transparent 72%);
}
.brand__glyph::after{
  content:"";position:absolute;right:-1px;bottom:-1px;width:9px;height:9px;
  background:linear-gradient(135deg,transparent 46%,var(--gold-400) 46%,var(--gold-400) 54%,transparent 54%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand__name{font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--paper-100);white-space:nowrap}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--gray-200);white-space:nowrap}

.site-nav{margin-left:auto;min-width:0}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__item{display:block}
.site-nav__link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:999px;
  font-size:14px;color:var(--gray-200);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.site-nav__link:hover{color:var(--paper-100);background:rgba(36,64,95,.6)}
.site-nav__link[aria-current="page"]{color:var(--paper-100);background:rgba(36,64,95,.82)}
.site-nav__link[aria-current="page"]::before{
  content:"";position:absolute;left:50%;bottom:2px;width:14px;height:2px;
  transform:translateX(-50%);background:var(--cinnabar-500);
}

.search-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--ink-500);border-radius:999px;
  background:rgba(10,26,46,.6);font-size:13px;color:var(--paper-100);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.search-trigger:hover{border-color:var(--gold-400);color:var(--gold-400)}
.search-trigger[aria-expanded="true"]{border-color:var(--gold-400);color:var(--gold-400);background:rgba(214,169,76,.14)}
.search-trigger__key{
  font-family:var(--font-mono);font-size:11px;line-height:1;
  padding:2px 5px;border:1px solid var(--ink-500);border-radius:2px;color:var(--gray-200);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.search-trigger[aria-expanded="true"] .search-trigger__key{color:var(--gold-400);border-color:rgba(214,169,76,.55)}
.search-trigger__label{white-space:nowrap}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:8px 14px;border:1px solid var(--ink-500);border-radius:999px;
  background:rgba(10,26,46,.6);font-size:13px;color:var(--paper-100);
}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1px;background:var(--paper-100);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

.search-panel{
  position:absolute;top:calc(100% + 12px);right:0;z-index:5;
  width:min(560px,calc(100vw - var(--gutter) * 2));
  padding:18px;
  border:1px solid var(--ink-500);border-radius:14px;
  background:rgba(18,39,63,.97);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 34px 64px -34px rgba(0,0,0,.95);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.search-panel[data-open]{opacity:1;visibility:visible;transform:none}
.search-panel__hint{margin-bottom:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--gray-200)}
.search-panel__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.search-panel__link{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 12px;
  padding:12px;border:1px solid transparent;border-radius:8px;
  background:rgba(10,26,46,.6);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.search-panel__link:hover{border-color:var(--gold-400);background:rgba(36,64,95,.62)}
.search-panel__key{grid-row:1 / span 2;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--clay-500)}
.search-panel__name{font-size:14px;color:var(--paper-100)}
.search-panel__desc{font-family:var(--font-mono);font-size:11px;color:var(--gray-200)}

.scroll-rail{
  position:absolute;left:26px;right:26px;bottom:5px;height:2px;
  border-radius:2px;background:rgba(36,64,95,.85);overflow:hidden;pointer-events:none;
}
.scroll-rail__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--jade-500),var(--gold-400))}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  margin-top:clamp(56px,8vw,110px);
  border-top:1px solid var(--ink-500);
  color:var(--paper-100);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(760px 340px at 12% 0%, rgba(47,143,121,.12), transparent 72%),
    radial-gradient(620px 300px at 92% 10%, rgba(169,96,60,.12), transparent 72%),
    repeating-linear-gradient(135deg, rgba(36,64,95,.24) 0 1px, transparent 1px 20px);
}
.site-footer__inner{padding-block:clamp(36px,5vw,64px) 26px}
.site-footer__top{display:grid;gap:32px;padding-bottom:30px;border-bottom:1px solid rgba(36,64,95,.85)}
@media (min-width:900px){
  .site-footer__top{grid-template-columns:minmax(240px,1fr) minmax(0,2.1fr);gap:52px}
}
.site-footer__brand{display:grid;gap:8px;align-content:start}
.site-footer__logo{font-size:clamp(20px,2vw,26px);font-weight:800;letter-spacing:.02em}
.site-footer__line{font-size:13px;line-height:1.9;color:var(--gray-200);max-width:34ch}
.site-footer__stamp{margin-top:8px}
.site-footer__nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
@media (min-width:720px){ .site-footer__nav{grid-template-columns:repeat(4,minmax(0,1fr))} }
.footer-col{display:grid;gap:12px;align-content:start}
.footer-col__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-400)}
.footer-col__list{display:grid;gap:8px}
.footer-col__item{display:block}
.footer-col__link{font-size:14px;color:var(--gray-200);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.footer-col__link:hover{color:var(--paper-100);border-bottom-color:var(--gold-400)}

.site-footer__contact{display:grid;gap:18px;padding:26px 0;border-bottom:1px solid rgba(36,64,95,.85)}
@media (min-width:900px){ .site-footer__contact{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px} }
.footer-contact__item{display:grid;gap:6px}
.footer-contact__key{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gray-200)}
.footer-contact__val{font-size:14px;color:var(--paper-100);word-break:break-word}
.footer-contact__note{grid-column:1 / -1;font-size:12px;line-height:1.85;color:var(--gray-400);max-width:70ch}

.site-footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  padding-top:22px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--gray-400);
}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal__item{display:block}
.footer-legal__link{color:var(--gray-200);transition:color var(--dur) var(--ease)}
.footer-legal__link:hover{color:var(--gold-400)}
.site-footer__icp{color:var(--gray-400)}
.site-footer__copy{margin-left:auto;color:var(--gray-200)}

/* ---------- 16. 返回顶部 ---------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,26px);bottom:clamp(14px,3vw,26px);z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;border:1px solid var(--ink-500);border-radius:999px;
  background:rgba(18,39,63,.94);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--gray-200);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--gold-400);color:var(--gold-400)}

/* ---------- 17. 显现与关联高亮 ---------- */
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}
[data-link-key]{transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
[data-link-key].is-linked{border-color:var(--gold-400);background-color:rgba(214,169,76,.1)}

/* ---------- 18. 响应式：平板与手机 ---------- */
@media (max-width:1180px){
  .site-nav__link{padding:8px 9px;font-size:13px}
  .search-trigger__label{display:none}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex}
  .site-header__bar{border-radius:22px;padding:10px 12px}
  .site-nav{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    margin:0;padding:10px;z-index:6;
    border:1px solid var(--ink-500);border-radius:18px;
    background:rgba(18,39,63,.98);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    box-shadow:0 34px 64px -34px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .site-nav__link{display:block;padding:12px 14px;border-radius:10px;font-size:15px}
  .site-nav__link[aria-current="page"]::before{left:5px;bottom:auto;top:50%;width:2px;height:16px;transform:translateY(-50%)}
  .search-panel{left:0;right:0;width:auto}
  .search-panel__list{grid-template-columns:minmax(0,1fr)}
  .scroll-rail{left:18px;right:18px}
}
@media (max-width:560px){
  body{line-height:1.9}
  .brand__sub{display:none}
  .search-trigger{padding:8px 10px}
  .site-footer__nav{gap:22px}
  .site-footer__bottom{font-size:11px}
  .site-footer__copy{margin-left:0}
}

/* ---------- 19. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
  .panel:hover,.btn:hover{transform:none}
  .bar__fill{transition:none}
}