/* =========================================================================
   优游站 — /assets/site.css
   共享外壳：悬浮胶囊头部 / 手账式页脚 / 通用组件与色彩分区
   ========================================================================= */

/* ---------- 1. 设计变量 ---------- */
:root{
  /* 珠宝色板：晨雾蓝 + 深浦蓝绿 承重，暖橙 行动，砖红/青绿/靛紫/酒红 分区 */
  --paper:#FAF4E8;
  --paper-2:#F3EADB;
  --mist:#DCEAF2;
  --deep:#0E3B43;
  --orange:#F28C38;
  --orange-deep:#DD7520;
  --paper-orange:#FBE3C6;
  --brick:#A44A3F;
  --teal:#2F7F73;
  --indigo:#3B3355;
  --wine:#7A2E3A;
  --ink:#20252B;
  --ink-soft:#4A5158;
  --ink-mute:#6E767E;
  --line:rgba(14,59,67,.14);
  --line-strong:rgba(14,59,67,.32);
  --on-deep:rgba(250,244,232,.86);
  --on-deep-soft:rgba(250,244,232,.6);
  --glass:rgba(250,244,232,.74);
  --glass-cool:rgba(220,234,242,.55);

  /* 尺度与节奏 */
  --shell:1200px;
  --gutter:clamp(16px,4vw,48px);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --dock-h:62px;
  --shadow-1:0 1px 0 rgba(14,59,67,.04),0 10px 28px -20px rgba(14,59,67,.5);
  --shadow-2:0 22px 60px -34px rgba(14,59,67,.62);
  --ease:cubic-bezier(.2,.7,.2,1);

  /* 字体：本机中黑标题 + 高可读正文 + 等宽索引 */
  --font-title:"Alibaba PuHuiTi 3.0","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

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

html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(1100px 560px at 8% -12%,rgba(220,234,242,.92),rgba(220,234,242,0) 62%),
    radial-gradient(900px 480px at 102% 2%,rgba(251,227,198,.6),rgba(251,227,198,0) 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-title);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.015em;
  color:var(--deep);
}

p{margin:0}
img,svg,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd{margin:0}
[hidden]{display:none !important}
[tabindex="-1"]:focus{outline:none}

::selection{background:var(--orange);color:#1d1509}

:focus-visible{
  outline:2px solid var(--brick);
  outline-offset:3px;
  border-radius:3px;
}
.footer :focus-visible,
.panel--deep :focus-visible,
.section--deep :focus-visible{outline-color:var(--orange)}

/* ---------- 3. 排版与容器 ---------- */
.wrap{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{
  position:relative;
  padding-block:clamp(40px,6vw,88px);
}
.section--mist{
  background:linear-gradient(180deg,rgba(220,234,242,.7),rgba(220,234,242,.28));
  border-block:1px solid var(--line);
}
.section--deep{
  background:var(--deep);
  color:var(--on-deep);
}
.section--deep h1,.section--deep h2,.section--deep h3{color:var(--paper)}

.display{
  font-family:var(--font-title);
  font-weight:800;
  font-size:clamp(36px,6.2vw,70px);
  line-height:1.05;
  letter-spacing:-.025em;
  color:var(--deep);
  text-wrap:balance;
}
.h2{
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.18;
}
.h3{
  font-size:clamp(19px,2.2vw,24px);
  line-height:1.3;
}
.lede{
  font-size:clamp(17px,2vw,19px);
  line-height:1.8;
  color:var(--ink-soft);
  max-width:62ch;
}
.mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-mute);
  text-transform:uppercase;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--teal);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:currentColor;
  opacity:.7;
}
.section--deep .eyebrow{color:var(--orange)}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 12px);
}
.section--deep .rule{background:repeating-linear-gradient(90deg,rgba(250,244,232,.3) 0 6px,transparent 6px 12px)}

.prose{
  max-width:68ch;
  color:var(--ink-soft);
}
.prose > * + *{margin-top:1rem}
.prose h2,.prose h3{color:var(--deep);margin-top:2rem}
.prose ul,.prose ol{list-style:disc;padding-left:1.25em}
.prose li + li{margin-top:.35rem}
.prose a{color:var(--brick);text-underline-offset:3px}
.prose strong{color:var(--ink);font-weight:700}

.stack{display:grid;gap:clamp(14px,2vw,22px)}
.grid{
  display:grid;
  gap:clamp(18px,2.6vw,32px);
}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--asym{grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr)}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 4. 顶部跳转 ---------- */
.skip-link{
  position:fixed;
  top:-70px;
  left:max(16px,var(--gutter));
  z-index:200;
  padding:.78rem 1.15rem;
  border-radius:0 0 var(--r-md) var(--r-md);
  background:var(--deep);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{top:0}

/* ---------- 5. 双周公告条 ---------- */
.ticker{
  background:var(--deep);
  color:var(--on-deep);
  border-bottom:1px solid rgba(250,244,232,.14);
}
.ticker__inner{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:.5rem var(--gutter);
  display:flex;
  align-items:center;
  gap:.75rem;
}
.ticker__label{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--orange);
  border:1px solid rgba(242,140,56,.55);
  border-radius:var(--r-pill);
  padding:.28rem .62rem;
  white-space:nowrap;
}
.ticker__body{
  min-width:0;
  flex:1 1 auto;
}
.ticker__text{
  font-size:13.5px;
  line-height:1.5;
  color:var(--on-deep);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.ticker__actions{
  flex:0 0 auto;
  display:flex;
  gap:.4rem;
}
.ticker__link{
  display:inline-block;
  padding:.4rem .78rem;
  border-radius:var(--r-pill);
  background:rgba(250,244,232,.12);
  color:var(--paper);
  font-size:12.5px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.ticker__link:hover{background:var(--orange);color:#1d1509}
.ticker__link--ghost{
  background:transparent;
  border:1px solid rgba(250,244,232,.32);
}
.ticker__link--ghost:hover{border-color:transparent}
.ticker__toggle{
  display:none;
  align-items:center;
  gap:.35rem;
  border:1px solid rgba(250,244,232,.28);
  background:transparent;
  color:var(--on-deep);
  border-radius:var(--r-pill);
  padding:.34rem .6rem;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  cursor:pointer;
}
.ticker__chevron{
  width:0;height:0;
  border-left:4px solid transparent;
  border-right:4px solid transparent;
  border-bottom:5px solid currentColor;
  transition:transform .2s var(--ease);
}
.ticker__toggle[aria-expanded="false"] .ticker__chevron{transform:rotate(180deg)}

/* ---------- 6. 悬浮胶囊头部 ---------- */
.masthead{
  position:sticky;
  top:0;
  z-index:60;
  padding:10px var(--gutter) 6px;
}
.progress{
  position:fixed;
  inset:0 0 auto 0;
  height:3px;
  z-index:90;
  pointer-events:none;
}
.progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--teal),var(--orange) 58%,var(--brick));
  transition:width .12s linear;
}
.masthead__inner{
  width:min(var(--shell),100%);
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:.6rem;
}

/* 品牌浮岛 */
.brand{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  padding:.42rem .95rem .42rem .45rem;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  backdrop-filter:blur(16px) saturate(1.25);
  box-shadow:var(--shadow-1);
  text-decoration:none;
  color:var(--deep);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.brand:hover{background:rgba(250,244,232,.9)}
.brand__mark{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  border-radius:12px;
  background:var(--deep);
  color:var(--paper-orange);
  font-family:var(--font-title);
  font-size:17px;
  font-weight:800;
  line-height:1;
}
.brand__text{
  display:flex;
  flex-direction:column;
  gap:1px;
}
.brand__name{
  font-family:var(--font-title);
  font-size:17px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--deep);
  line-height:1.1;
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.06em;
  color:var(--ink-mute);
  white-space:nowrap;
  line-height:1.2;
}

/* 栏目浮岛 */
.nav{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  justify-content:center;
}
.nav__list{
  display:flex;
  align-items:center;
  gap:.12rem;
  padding:.3rem;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  backdrop-filter:blur(16px) saturate(1.25);
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s var(--ease);
}
.nav__item{flex:0 0 auto}
.nav__link{
  position:relative;
  display:block;
  padding:.5rem .82rem;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:600;
  line-height:1.4;
  color:var(--deep);
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .15s var(--ease);
}
.nav__link:hover{background:var(--mist)}
.nav__link:active{transform:translateY(1px)}
.nav__link[aria-current="page"]{
  background:var(--deep);
  color:var(--paper);
  box-shadow:inset 0 0 0 1px rgba(250,244,232,.16);
}
.nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:.26rem;
  width:4px;height:4px;
  margin-left:-2px;
  border-radius:50%;
  background:var(--orange);
}

/* 移动端折叠按钮 */
.nav-toggle{
  display:none;
  flex:0 0 auto;
  align-items:center;
  gap:.45rem;
  padding:.6rem .85rem;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  backdrop-filter:blur(16px) saturate(1.25);
  box-shadow:var(--shadow-1);
  color:var(--deep);
  font-size:13px;
  font-weight:700;
  cursor:pointer;
}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:16px;
}
.nav-toggle__bars i{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .18s 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)}
.nav-toggle__label{white-space:nowrap}

/* 暖橙直达钮 */
.quick-entry{
  flex:0 0 auto;
  display:inline-block;
  padding:.62rem 1.05rem;
  border-radius:var(--r-pill);
  background:var(--orange);
  color:#1d1509;
  font-size:14px;
  font-weight:800;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  box-shadow:0 12px 26px -16px rgba(242,140,56,.95);
  transition:background .2s var(--ease),transform .15s var(--ease),color .2s var(--ease);
}
.quick-entry:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px)}
.quick-entry:active{transform:translateY(0)}

.masthead[data-stuck="true"] .brand,
.masthead[data-stuck="true"] .nav__list,
.masthead[data-stuck="true"] .nav-toggle{box-shadow:var(--shadow-2)}

/* ---------- 7. 画册封底式页脚 ---------- */
.footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background-color:var(--deep);
  background-image:
    linear-gradient(180deg,rgba(250,244,232,.07),rgba(250,244,232,0) 36%),
    repeating-linear-gradient(90deg,rgba(250,244,232,.05) 0 1px,transparent 1px 72px);
  color:var(--on-deep);
}
.footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:6px;
  background:linear-gradient(90deg,var(--teal),var(--orange) 46%,var(--brick) 78%,var(--wine));
}

/* 常驻公告 / 反馈条 */
.dock{
  position:sticky;
  bottom:0;
  z-index:20;
  background:rgba(251,227,198,.95);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(164,74,63,.3);
  box-shadow:0 -14px 34px -26px rgba(14,59,67,.75);
}
.dock__inner{
  width:min(var(--shell),100%);
  margin-inline:auto;
  min-height:var(--dock-h);
  padding:.55rem var(--gutter);
  display:flex;
  align-items:center;
  gap:.7rem;
  flex-wrap:wrap;
}
.dock__mono{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brick);
  border:1px dashed rgba(164,74,63,.5);
  border-radius:var(--r-pill);
  padding:.24rem .6rem;
  white-space:nowrap;
}
.dock__text{
  flex:1 1 240px;
  min-width:0;
  font-size:13.5px;
  line-height:1.5;
  color:#43272A;
}
.dock__links{
  flex:0 0 auto;
  display:flex;
  gap:.4rem;
}
.dock__btn{
  display:inline-block;
  padding:.46rem .82rem;
  border-radius:var(--r-pill);
  border:1px solid rgba(164,74,63,.45);
  background:transparent;
  color:var(--brick);
  font-size:12.5px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.dock__btn:hover{background:rgba(164,74,63,.12)}
.dock__btn--solid{
  background:var(--brick);
  border-color:var(--brick);
  color:var(--paper);
}
.dock__btn--solid:hover{background:var(--wine);border-color:var(--wine);color:var(--paper)}

/* 四栏索引 */
.footer__inner{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:clamp(34px,5vw,60px) var(--gutter) clamp(26px,4vw,44px);
  display:grid;
  grid-template-columns:1.5fr 1fr 1.35fr 1fr;
  gap:clamp(22px,3.6vw,46px);
}
.footer__brand{min-width:0}
.footer__logo{
  font-family:var(--font-title);
  font-size:clamp(26px,3vw,34px);
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--paper);
  line-height:1.1;
}
.footer__tag{
  margin-top:.6rem;
  max-width:26ch;
  font-size:14px;
  line-height:1.7;
  color:var(--on-deep-soft);
}
.footer__mono{
  margin-top:.9rem;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--orange);
}
.footer__col{min-width:0}
.footer__col-title{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:rgba(250,244,232,.55);
  padding-bottom:.55rem;
  border-bottom:1px dashed rgba(250,244,232,.22);
  margin-bottom:.8rem;
}
.footer__list{display:grid;gap:.42rem}
.footer__link{
  display:inline-block;
  font-size:14px;
  color:var(--on-deep);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer__link:hover{color:var(--orange);border-bottom-color:rgba(242,140,56,.6)}

.footer__contact{display:grid;gap:.7rem}
.footer__contact-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.35rem .45rem;
}
.footer__contact-label{
  width:100%;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(250,244,232,.45);
}
.footer__contact-value{
  font-size:13.5px;
  line-height:1.5;
  color:var(--paper);
  word-break:break-word;
}
.copy-btn{
  border:1px solid rgba(250,244,232,.28);
  background:transparent;
  color:rgba(250,244,232,.8);
  border-radius:var(--r-pill);
  padding:.16rem .52rem;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.copy-btn:hover{background:var(--orange);border-color:transparent;color:#1d1509}
.copy-btn[data-copied="true"]{background:var(--teal);border-color:transparent;color:#fff}
.footer__note{
  margin-top:.85rem;
  font-size:12px;
  line-height:1.65;
  color:rgba(250,244,232,.48);
}

.footer__base{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:1.1rem var(--gutter) max(84px,calc(var(--dock-h) + 40px));
  border-top:1px solid rgba(250,244,232,.16);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.55rem 1.4rem;
}
.footer__copy{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(250,244,232,.62);
}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  gap:1rem;
}
.footer__legal-link{
  font-size:12.5px;
  color:rgba(250,244,232,.72);
  text-decoration:none;
  border-bottom:1px solid rgba(250,244,232,.24);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer__legal-link:hover{color:var(--orange);border-bottom-color:var(--orange)}

/* ---------- 8. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.78rem 1.35rem;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--deep);color:var(--paper)}
.btn--solid:hover{background:var(--teal)}
.btn--accent{background:var(--orange);color:#1d1509}
.btn--accent:hover{background:var(--orange-deep);color:#fff}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--deep)}
.btn--ghost:hover{background:var(--mist)}
.btn--quiet{background:var(--paper-orange);color:var(--wine)}
.btn--quiet:hover{background:#F8D6AF}
.btn--sm{padding:.55rem .95rem;font-size:13.5px}

/* ---------- 9. 内容层：实色面板与玻璃层 ---------- */
.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,28px);
  box-shadow:var(--shadow-1);
}
.glass{
  background:var(--glass-cool);
  border:1px solid rgba(255,255,255,.6);
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,28px);
  -webkit-backdrop-filter:blur(10px) saturate(1.15);
  backdrop-filter:blur(10px) saturate(1.15);
  box-shadow:var(--shadow-1);
}
.panel{
  background:#FFFDF8;
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,30px);
  border:1px solid var(--line);
}
.panel--deep{
  background:var(--deep);
  border-color:transparent;
  color:var(--on-deep);
}
.panel--deep h2,.panel--deep h3{color:var(--paper)}
.panel--indigo{
  background:var(--indigo);
  border-color:transparent;
  color:rgba(250,244,232,.9);
}
.panel--indigo h2,.panel--indigo h3{color:var(--paper)}

/* 状态标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  padding:.24rem .58rem;
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.1em;
  line-height:1.5;
  background:var(--mist);
  color:var(--deep);
}
.tag--beta{
  background:rgba(164,74,63,.1);
  border:1px dashed rgba(164,74,63,.55);
  color:var(--brick);
}
.tag--new{background:var(--orange);color:#1d1509}
.tag--teal{background:rgba(47,127,115,.14);color:var(--teal)}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs{padding-top:1.15rem}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}
.breadcrumbs__item{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:var(--ink-mute);
}
.breadcrumbs__item + .breadcrumbs__item::before{
  content:"/";
  color:var(--line-strong);
}
.breadcrumbs__link{
  color:var(--ink-mute);
  text-decoration:none;
  transition:color .18s var(--ease);
}
.breadcrumbs__link:hover{color:var(--brick)}
.breadcrumbs__current{color:var(--deep);font-weight:600}

/* ---------- 11. 主题筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem;
  padding:.42rem;
  border-radius:var(--r-pill);
  background:rgba(220,234,242,.58);
  border:1px solid var(--line);
  width:fit-content;
  max-width:100%;
}
.filter-btn{
  padding:.44rem .85rem;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--deep);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  line-height:1.3;
  cursor:pointer;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.filter-btn:hover{background:rgba(250,244,232,.9)}
.filter-btn[aria-pressed="true"]{
  background:var(--deep);
  color:var(--paper);
}
.filter-count{
  margin-left:.35rem;
  padding:.2rem .55rem;
  border-radius:var(--r-pill);
  background:rgba(47,127,115,.14);
  color:var(--teal);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
}

/* ---------- 12. 图片容器基础规则（页面阶段放入本地图片） ---------- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background-color:var(--mist);
  background-image:repeating-linear-gradient(135deg,rgba(14,59,67,.06) 0 10px,rgba(14,59,67,0) 10px 20px);
  isolation:isolate;
}
.media__img,
.media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--slant{clip-path:polygon(0 0,100% 3%,100% 100%,0 97%)}
.media__caption{
  position:absolute;
  left:10px;
  right:10px;
  bottom:10px;
  padding:.32rem .6rem;
  border-radius:var(--r-sm);
  background:rgba(250,244,232,.84);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--deep);
}

/* ---------- 13. 返回顶部与滚动显现 ---------- */
.to-top{
  position:fixed;
  right:clamp(12px,3vw,26px);
  bottom:calc(var(--dock-h) + 18px + env(safe-area-inset-bottom,0px));
  z-index:80;
  width:46px;height:46px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(250,244,232,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--deep);
  cursor:pointer;
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s,background .2s;
}
.to-top::before{
  content:"";
  width:10px;height:10px;
  border-left:2px solid currentColor;
  border-top:2px solid currentColor;
  transform:translateY(2px) rotate(45deg);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--orange);color:#1d1509;border-color:transparent}

html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
html.has-js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1080px){
  .brand__sub{display:none}
  .nav__link{padding:.48rem .7rem;font-size:13.5px}
  .footer__inner{grid-template-columns:1.4fr 1fr 1.4fr;gap:clamp(20px,3vw,34px)}
  .footer__col:last-child{grid-column:1 / -1}
}

@media (max-width:900px){
  body{font-size:16px}
  .masthead{padding:8px var(--gutter) 4px}
  .masthead__inner{flex-wrap:wrap;gap:.5rem}
  .brand{order:1;flex:1 1 auto}
  .quick-entry{order:2;padding:.55rem .9rem;font-size:13.5px}
  .nav-toggle{order:3;display:inline-flex}
  .nav{
    order:4;
    flex:1 1 100%;
    display:none;
    justify-content:flex-start;
  }
  .nav[data-open="true"]{display:block}
  .nav__list{
    width:100%;
    justify-content:flex-start;
    overflow-x:auto;
    overflow-y:hidden;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
    box-shadow:var(--shadow-2);
  }
  .nav__list::-webkit-scrollbar{display:none}
  .nav__link{font-size:13.5px;padding:.5rem .8rem}
  .ticker__inner{flex-wrap:wrap;gap:.45rem .6rem;padding-block:.55rem}
  .ticker__body{flex:1 1 100%;order:3}
  .ticker__text{white-space:normal;font-size:13px}
  .ticker__actions{order:2;margin-left:auto}
  .ticker__toggle{order:1;display:inline-flex;margin-left:auto}
  .ticker__label{order:0}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--asym{grid-template-columns:minmax(0,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
  .footer__col:last-child{grid-column:auto}
  .filter-bar{border-radius:var(--r-lg)}
}

@media (max-width:620px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footer__inner{grid-template-columns:minmax(0,1fr)}
  .footer__brand,.footer__col:last-child{grid-column:auto}
  .dock__inner{min-height:0;padding-block:.6rem}
  .dock__text{flex:1 1 100%;order:3}
  .dock__links{width:100%;order:4}
  .dock__btn{flex:1 1 auto;text-align:center}
  .footer__base{flex-direction:column;align-items:flex-start}
  .to-top{width:42px;height:42px}
  .display{font-size:clamp(32px,9vw,42px)}
}

/* ---------- 15. 减少动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.has-js [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}