/* ============================================================
   /assets/site.css — 月博登录中心 共享外壳与基础组件
   01 reset · 02 tokens · 03 中文排版 · 04 布局工具
   05 按钮与控件 · 06 信息形态 · 07 图片容器
   08 头部轨道 · 09 页脚 · 10 响应式 · 11 动效与降级
   ============================================================ */

/* ---------- 01 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ol,ul{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{border-collapse:collapse;width:100%}
::selection{background:var(--amber);color:var(--ink)}

/* ---------- 02 tokens ---------- */
:root{
  --indigo:#1B2A4A;
  --ink:#0F1B33;
  --moon:#F5F7FA;
  --paper:#FBF8F1;
  --amber:#E8A33D;
  --teal:#2EC4B6;
  --mist:#8FA3C8;
  --line:#D7E0EE;
  --clay:#D96C5F;
  --pine:#2F7D6D;
  --line-soft:rgba(215,224,238,.55);
  --line-dark:rgba(215,224,238,.18);
  --rail-w:112px;
  --bar-h:64px;
  --maxw:1280px;
  --gutter:clamp(18px,5vw,64px);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC",STSong,"SimSun",serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --z-header:80;
  --z-drawer:90;
}

/* ---------- 03 基础与中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:clamp(1rem,1.05vw,1.125rem);
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--indigo);
  background:var(--moon);
  padding-top:var(--bar-h);
  -webkit-font-smoothing:antialiased;
}
#main-content{display:block;scroll-margin-top:calc(var(--bar-h) + 20px)}

.display{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(2.8rem,7vw,6.4rem);
  line-height:1.12;
  letter-spacing:.04em;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.22;letter-spacing:.03em}
h1{font-size:clamp(2.2rem,4.6vw,3.6rem)}
h2{font-size:clamp(1.7rem,3.2vw,2.6rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.4rem)}
h4{font-size:clamp(1rem,1.4vw,1.15rem)}
.section-title{font-family:var(--font-display);font-weight:700;font-size:clamp(1.8rem,3.4vw,3rem);line-height:1.2;letter-spacing:.04em}
.lede{font-size:clamp(1.02rem,1.4vw,1.28rem);line-height:1.75;max-width:60ch;color:rgba(27,42,74,.82)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.7rem;line-height:1.4;
  letter-spacing:.2em;color:var(--mist);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--amber);flex:0 0 auto}
.mono{font-family:var(--font-mono);letter-spacing:.02em}
.text-amber{color:var(--amber)}
.text-teal{color:var(--teal)}

.prose{max-width:68ch;line-height:1.8}
.prose > * + *{margin-top:1.05em}
.prose h2,.prose h3{margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.25em;list-style:revert}
.prose li + li{margin-top:.4em}
.prose a{color:inherit;border-bottom:1px solid rgba(46,196,182,.65)}
.prose a:hover{border-color:var(--amber)}
.prose strong{font-weight:700}
.prose blockquote{
  border-left:2px solid var(--amber);padding-left:1.1em;
  font-family:var(--font-display);font-size:1.05em;color:rgba(27,42,74,.9);
}

/* ---------- 04 布局工具 ---------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.stack{display:flex;flex-direction:column;gap:clamp(14px,2vw,24px)}
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.hairline{height:1px;background:var(--line-soft);border:0;margin:0}

.band{position:relative;padding:clamp(44px,7vw,96px) var(--gutter)}
.band__inner{max-width:var(--maxw);margin-inline:auto;position:relative;z-index:1}
.band--night{background:linear-gradient(168deg,#1B2A4A 0%,#16233F 52%,#0F1B33 100%);color:var(--moon)}
.band--indigo{background:var(--indigo);color:var(--moon)}
.band--paper{background:var(--paper);color:var(--indigo)}
.band--moon{background:var(--moon);color:var(--indigo)}
.band--night .lede,.band--indigo .lede{color:rgba(245,247,250,.82)}
.band--night .eyebrow,.band--indigo .eyebrow{color:rgba(143,163,200,.95)}
.band--night .prose,.band--indigo .prose{color:rgba(245,247,250,.86)}
.band--paper .prose{color:rgba(27,42,74,.88)}

.moon-arc{position:relative;height:clamp(56px,8vw,110px);overflow:hidden;pointer-events:none;color:var(--mist)}
.moon-arc::before{
  content:"";position:absolute;left:50%;top:100%;
  width:min(1600px,170vw);height:min(1600px,170vw);
  transform:translate(-50%,-88%);
  border-radius:50%;
  border-top:1px solid rgba(232,163,61,.45);
  box-shadow:0 -1px 0 rgba(46,196,182,.16);
}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;
  color:var(--mist);
}
.breadcrumbs a:hover{color:var(--amber)}
.breadcrumbs__sep{opacity:.55}
.breadcrumbs [aria-current="page"]{color:currentColor;opacity:.72}

/* ---------- 05 按钮与控件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);font-size:.9rem;font-weight:500;line-height:1.2;
  letter-spacing:.05em;padding:12px 22px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),
             transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--amber{background:var(--amber);color:var(--ink);box-shadow:0 12px 26px -16px rgba(232,163,61,.95)}
.btn--amber:hover{background:#F1AE53;transform:translateY(-1px)}
.btn--teal{background:var(--teal);color:var(--ink)}
.btn--teal:hover{background:#45D6C9;transform:translateY(-1px)}
.btn--ghost{background:rgba(245,247,250,.06);border-color:rgba(215,224,238,.4);color:var(--moon)}
.btn--ghost:hover{background:rgba(245,247,250,.14)}
.btn--quiet{background:transparent;border-color:var(--line);color:var(--indigo)}
.btn--quiet:hover{border-color:var(--teal);color:var(--indigo)}
.btn--sm{padding:8px 14px;font-size:.8rem}
.btn--block{width:100%}

.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--teal);flex:0 0 auto}
.dot--teal{background:var(--teal);box-shadow:0 0 0 3px rgba(46,196,182,.18)}
.dot--amber{background:var(--amber);box-shadow:0 0 0 3px rgba(232,163,61,.18)}
.dot--clay{background:var(--clay);box-shadow:0 0 0 3px rgba(217,108,95,.18)}
.dot--pine{background:var(--pine);box-shadow:0 0 0 3px rgba(47,125,109,.18)}

.copy-btn{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.08em;line-height:1;
  padding:5px 10px;border-radius:999px;
  border:1px solid rgba(215,224,238,.32);color:var(--mist);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.copy-btn:hover{color:var(--moon);border-color:var(--teal)}
.copy-btn[data-copied]{color:var(--ink);background:var(--teal);border-color:var(--teal)}

/* ---------- 06 信息形态 ---------- */
.glass{
  background:rgba(245,247,250,.07);
  border:1px solid rgba(215,224,238,.22);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-radius:var(--r-md);
}
.panel{
  background:var(--moon);color:var(--indigo);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:clamp(18px,2.4vw,28px);
}
.panel--paper{background:var(--paper)}
.panel--night{background:rgba(15,27,51,.62);color:var(--moon);border-color:rgba(215,224,238,.2)}
.card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--r-md);
  background:var(--moon);border:1px solid var(--line);
  box-shadow:0 20px 44px -36px rgba(15,27,51,.7);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(46,196,182,.5);box-shadow:0 26px 50px -34px rgba(15,27,51,.65)}
.card--night{background:rgba(15,27,51,.72);color:var(--moon);border-color:rgba(215,224,238,.2)}
.card-title{font-family:var(--font-display);font-weight:700;font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.4;letter-spacing:.03em}
.card-meta{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--mist)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;
  padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);color:rgba(27,42,74,.72);
}
.tag--amber{border-color:rgba(232,163,61,.55);color:#9A6413;background:rgba(232,163,61,.12)}
.tag--teal{border-color:rgba(46,196,182,.55);color:#176C65;background:rgba(46,196,182,.12)}
.card--night .tag,.panel--night .tag{border-color:rgba(215,224,238,.28);color:rgba(245,247,250,.8)}

.status-list{display:flex;flex-direction:column}
.status-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed var(--line-soft);
  font-size:.86rem;
}
.status-row:last-child{border-bottom:0}
.status-row__key{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;color:var(--mist);flex:0 0 auto}
.status-row__value{text-align:right;color:inherit}

.filter-bar{
  display:flex;flex-wrap:wrap;gap:6px;
  padding:6px;border-radius:999px;
  background:rgba(245,247,250,.06);border:1px solid rgba(215,224,238,.22);
  width:fit-content;max-width:100%;
}
.filter-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:999px;
  font-size:.82rem;letter-spacing:.05em;line-height:1.2;
  color:rgba(245,247,250,.78);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.filter-btn:hover{background:rgba(245,247,250,.1);color:var(--moon)}
.filter-btn[aria-pressed="true"]{background:var(--teal);color:var(--ink);font-weight:500}
.filter-btn__count{font-family:var(--font-mono);font-size:.68rem;opacity:.72}
.filter-bar--light{background:rgba(27,42,74,.05);border-color:var(--line)}
.filter-bar--light .filter-btn{color:rgba(27,42,74,.72)}
.filter-bar--light .filter-btn:hover{background:rgba(27,42,74,.08);color:var(--indigo)}
.filter-bar--light .filter-btn[aria-pressed="true"]{background:var(--indigo);color:var(--moon)}
.filter-empty{
  padding:18px 20px;border-radius:var(--r-md);
  border:1px dashed var(--line-soft);
  font-size:.9rem;color:var(--mist);
}
[data-filter-item]{transition:opacity .2s var(--ease),transform .2s var(--ease)}
[data-filter-item][hidden]{display:none !important}

/* ---------- 07 响应式图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;display:block;
  border-radius:var(--r-lg);
  aspect-ratio:16 / 10;
  background:linear-gradient(150deg,rgba(27,42,74,.95) 0%,rgba(15,27,51,.98) 60%,rgba(46,196,182,.14) 100%);
  border:1px solid rgba(215,224,238,.2);
}
.media-frame img,.media-frame picture{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__tag{
  position:absolute;left:14px;bottom:14px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;
  padding:5px 10px;border-radius:999px;
  background:rgba(15,27,51,.7);color:var(--moon);
  border:1px solid rgba(215,224,238,.24);
}

/* ---------- 08 头部轨道 ---------- */
.skip-link{
  position:fixed;top:-120px;left:14px;z-index:200;
  background:var(--amber);color:var(--ink);
  padding:10px 18px;border-radius:0 0 var(--r-sm) var(--r-sm);
  font-size:.88rem;font-weight:700;letter-spacing:.06em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

.site-header{
  position:fixed;z-index:var(--z-header);
  background:linear-gradient(180deg,#0F1B33 0%,#16233F 55%,#0F1B33 100%);
  color:var(--moon);
}
.site-header__bar{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;width:100%;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--moon);min-width:0}
.brand__moon{
  position:relative;flex:0 0 auto;
  width:32px;height:32px;border-radius:50%;
  background:
    radial-gradient(circle at 34% 30%,#FFF9EC 0%,#F4E6C6 34%,rgba(232,163,61,.42) 66%,rgba(232,163,61,0) 74%),
    linear-gradient(160deg,#E8A33D 0%,#B77C28 100%);
  box-shadow:0 0 0 1px rgba(232,163,61,.45),0 0 22px -6px rgba(232,163,61,.75);
}
.brand__moon::after{
  content:"";position:absolute;inset:-6px;border-radius:50%;
  border:1px solid rgba(143,163,200,.35);
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:.95rem;letter-spacing:.1em;white-space:nowrap}
.brand__tag{font-size:.66rem;letter-spacing:.06em;color:var(--mist);white-space:nowrap}

.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px solid rgba(215,224,238,.3);color:var(--moon);
  font-size:.78rem;letter-spacing:.1em;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{background:rgba(245,247,250,.08);border-color:rgba(46,196,182,.55)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor;transition:transform .2s var(--ease)}

.site-nav{display:flex;flex-direction:column;min-width:0}
.site-nav__head{display:none}
.site-nav__eyebrow{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--mist)}
.site-nav__close{
  font-size:.76rem;letter-spacing:.1em;color:var(--moon);
  padding:6px 12px;border-radius:999px;border:1px solid rgba(245,247,250,.26);
}
.site-nav__close:hover{border-color:var(--teal);color:var(--teal)}
.site-nav__list{display:flex;flex-direction:column;gap:2px}
.site-nav__link{
  position:relative;display:flex;align-items:baseline;gap:10px;
  padding:11px 12px;border-radius:10px;
  color:rgba(245,247,250,.8);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.site-nav__idx{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.04em;color:var(--mist);flex:0 0 auto}
.site-nav__label{font-size:.95rem;letter-spacing:.05em}
.site-nav__link:hover{background:rgba(245,247,250,.08);color:var(--moon)}
.site-nav__link[aria-current="page"]{background:rgba(232,163,61,.14);color:var(--moon)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--amber)}
.site-nav__link[aria-current="page"]::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;background:var(--amber);
}
.site-nav__foot{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;
  padding-top:16px;border-top:1px solid var(--line-dark);
}
.site-nav__support{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:10px;
  font-size:.8rem;letter-spacing:.08em;color:var(--moon);
  border:1px solid rgba(46,196,182,.45);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.site-nav__support:hover{background:rgba(46,196,182,.14);border-color:var(--teal)}
.site-nav__status{
  font-family:var(--font-mono);font-size:.62rem;line-height:1.75;
  letter-spacing:.03em;color:var(--mist);
}

.scroll-progress{
  position:fixed;left:0;right:0;bottom:0;height:2px;z-index:120;
  pointer-events:none;background:rgba(215,224,238,.14);
}
.scroll-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--amber),var(--teal));
}

/* 移动端：顶部条 + 抽屉 */
@media (max-width:1023px){
  .site-header{
    inset:0 0 auto 0;width:100%;height:var(--bar-h);
    display:flex;align-items:center;
    padding:0 16px;
    border-bottom:1px solid var(--line-dark);
    box-shadow:0 10px 30px -22px rgba(15,27,51,.9);
  }
  .site-nav{
    position:fixed;top:var(--bar-h);left:0;bottom:0;
    width:min(86vw,340px);z-index:var(--z-drawer);
    padding:18px 18px 28px;
    background:linear-gradient(180deg,#0F1B33 0%,#16233F 100%);
    border-right:1px solid rgba(215,224,238,.2);
    box-shadow:24px 0 60px -30px rgba(15,27,51,.95);
    overflow-y:auto;overscroll-behavior:contain;
    transform:translateX(-102%);opacity:.5;
    transition:transform .26s var(--ease),opacity .26s var(--ease);
  }
  .site-header[data-open] .site-nav{transform:translateX(0);opacity:1}
  .site-nav__head{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding-bottom:14px;margin-bottom:14px;
    border-bottom:1px solid var(--line-dark);
  }
  .site-header::before{
    content:"";position:fixed;top:var(--bar-h);right:0;bottom:0;left:0;
    z-index:85;
    background:rgba(15,27,51,.58);
    -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
    opacity:0;pointer-events:none;
    transition:opacity .24s var(--ease);
  }
  .site-header[data-open]::before{opacity:1;pointer-events:auto}
  .site-header[data-open] .nav-toggle{border-color:var(--teal)}
  .site-header[data-open] .nav-toggle__bars span:first-child{transform:translateY(2.75px) rotate(45deg)}
  .site-header[data-open] .nav-toggle__bars span:last-child{transform:translateY(-2.75px) rotate(-45deg)}
  html.nav-open,html.nav-open body{overflow:hidden}
}

/* 桌面端：左侧 112px 轨道 */
@media (min-width:1024px){
  body{padding-top:0;padding-left:var(--rail-w)}
  #main-content{scroll-margin-top:24px}
  .site-header{
    inset:0 auto 0 0;width:var(--rail-w);
    display:flex;flex-direction:column;
    border-right:1px solid var(--line-dark);
  }
  .site-header__bar{
    flex-direction:column;justify-content:flex-start;align-items:center;
    gap:0;padding:20px 8px 16px;
    border-bottom:1px solid rgba(215,224,238,.14);
  }
  .brand{flex-direction:column;gap:10px;text-align:center}
  .brand__moon{width:34px;height:34px}
  .brand__name{
    writing-mode:vertical-rl;text-orientation:upright;
    font-size:.78rem;letter-spacing:.18em;line-height:1.35;white-space:normal;
  }
  .brand__tag{display:none}
  .nav-toggle{display:none}
  .site-nav{flex:1 1 auto;padding:14px 8px 12px;overflow-y:auto;overscroll-behavior:contain}
  .site-nav__head{display:none}
  .site-nav__list{gap:3px}
  .site-nav__link{flex-direction:column;align-items:flex-start;gap:2px;padding:8px 9px;border-radius:9px}
  .site-nav__idx{font-size:.6rem}
  .site-nav__label{font-size:.82rem;letter-spacing:.02em;line-height:1.45}
  .site-nav__link[aria-current="page"]::before{top:8px;bottom:8px}
  .site-nav__foot{padding:12px 2px 0;gap:8px}
  .site-nav__support{padding:7px 8px;font-size:.74rem;letter-spacing:.02em;justify-content:center}
  .site-nav__status{font-size:.58rem;letter-spacing:0;text-align:center}
  .scroll-progress{left:var(--rail-w)}
}
@media (min-width:1024px) and (max-height:700px){
  .site-nav__status{display:none}
  .site-nav__link{padding:6px 9px}
}

/* ---------- 09 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,120px);
  padding-top:clamp(46px,7vw,92px);
  background:linear-gradient(180deg,#0F1B33 0%,#13203C 58%,#0A1326 100%);
  color:var(--moon);
}
.site-footer::before{
  content:"";position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:min(1280px,150%);height:1px;
  background:linear-gradient(90deg,transparent,rgba(232,163,61,.65),rgba(46,196,182,.5),transparent);
}
.site-footer__glow{
  position:absolute;left:-10%;right:-10%;bottom:-40%;height:70%;
  pointer-events:none;z-index:0;
  background:
    radial-gradient(58% 100% at 50% 100%,rgba(46,196,182,.18),rgba(46,196,182,0) 70%),
    radial-gradient(42% 84% at 18% 100%,rgba(232,163,61,.16),rgba(232,163,61,0) 72%);
}
.site-footer__inner{
  position:relative;z-index:1;
  max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);
  display:grid;gap:clamp(28px,4vw,52px);
  grid-template-columns:1fr;
}
.site-footer__lead{display:flex;flex-direction:column;gap:14px;min-width:0}
.site-footer__eyebrow{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.24em;
  color:var(--mist);
}
.site-footer__tagline{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.15;letter-spacing:.06em;
  color:var(--moon);
}
.site-footer__note{font-size:.92rem;line-height:1.8;color:rgba(245,247,250,.72);max-width:34ch}
.site-footer__contact{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.site-footer__contact-row{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 12px;
  padding-top:9px;border-top:1px dashed rgba(215,224,238,.18);
  font-size:.84rem;line-height:1.7;
}
.site-footer__contact-key{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;
  color:var(--mist);flex:0 0 auto;min-width:5.5em;
}
.site-footer__contact-value{color:rgba(245,247,250,.88);word-break:break-word;flex:1 1 auto;min-width:0}
.site-footer__col{min-width:0}
.site-footer__col-title{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;
  color:var(--mist);margin-bottom:14px;padding-bottom:10px;
  border-bottom:1px solid rgba(215,224,238,.14);
}
.site-footer__links{display:flex;flex-direction:column;gap:10px}
.site-footer__link{
  display:inline-block;width:fit-content;
  font-size:.9rem;color:rgba(245,247,250,.76);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.site-footer__link:hover{color:var(--moon);border-color:rgba(232,163,61,.7)}
.site-footer__disclaimer{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:clamp(28px,4vw,48px) auto 0;
  padding:0 var(--gutter);
  font-size:.76rem;line-height:1.75;letter-spacing:.02em;
  color:rgba(143,163,200,.95);
}
.site-footer__bottom{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:22px auto 0;
  padding:18px var(--gutter) 30px;
  border-top:1px solid rgba(215,224,238,.16);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 22px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.05em;
  color:rgba(143,163,200,.92);
}
.site-footer__copy,.site-footer__icp{white-space:nowrap}
.site-footer__legal{display:flex;flex-wrap:wrap;gap:8px 18px}
.site-footer__legal a{transition:color .18s var(--ease)}
.site-footer__legal a:hover{color:var(--amber)}

@media (min-width:720px){
  .site-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__lead{grid-column:1 / -1}
}
@media (min-width:1024px){
  .site-footer__inner{grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.82fr))}
  .site-footer__lead{grid-column:auto}
}

/* ---------- 10 动效与降级 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js [data-reveal].is-visible{opacity:1;transform:none}

:where(a,button,[tabindex],summary,input,textarea,select):focus-visible{
  outline:2px solid var(--teal);
  outline-offset:3px;
  border-radius:4px;
}

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