/* =========================================================
   /assets/site.css — 财神8主站共享层
   reset / 变量 / 中文排版 / 悬浮胶囊头部 / 索引页脚 / 通用组件
   ========================================================= */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--paper);color:var(--brown);
  font-family:var(--font-body);font-size:1rem;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

:root{
  --ink:#0D0E0B;
  --ink-2:#1B1C17;
  --paper:#F2EADA;
  --paper-2:#E8DFCB;
  --gold:#C9A24B;
  --gold-bright:#E9CB84;
  --vermilion:#B23A2F;
  --jade:#2E6B5D;
  --brown:#2B2018;
  --fog:#8B7442;
  --ash:#B9B0A0;

  --line:rgba(139,116,66,.42);
  --line-strong:rgba(139,116,66,.62);
  --line-ink:rgba(139,116,66,.34);
  --paper-text-soft:#5B4A36;

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --cut:18px;
  --cut-lg:26px;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --fs-12:.75rem;
  --fs-14:.875rem;
  --fs-16:1rem;
  --fs-18:1.125rem;
  --fs-24:1.5rem;

  --dur-fast:140ms;
  --dur:200ms;
  --dur-slow:260ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 焦点 ---------- */
:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}
.site-header :where(a,button):focus-visible,
.site-footer :where(a,button):focus-visible,
.section--ink :where(a,button):focus-visible,
.back-to-top:focus-visible{outline-color:var(--gold-bright)}

/* ---------- 跳到主要内容 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:400;
  display:inline-block;padding:10px 20px;border-radius:999px;
  background:var(--gold);color:var(--ink);
  font-size:var(--fs-14);font-weight:600;letter-spacing:.02em;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease)}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 头部：悬浮胶囊 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px var(--gutter) 0;
  background:linear-gradient(180deg,rgba(13,14,11,.35),rgba(13,14,11,0));
  transition:padding var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.site-header[data-scrolled="true"]{
  padding-top:6px;
  background:linear-gradient(180deg,rgba(242,234,218,.92),rgba(242,234,218,0))}

.header-shell{width:100%;max-width:var(--shell);margin-inline:auto}

.nav-capsule{
  display:flex;align-items:center;gap:clamp(10px,1.8vw,24px);
  padding:9px 12px 9px 18px;
  border:1px solid var(--line-ink);
  border-radius:999px;
  background:rgba(13,14,11,.82);
  color:var(--paper);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             padding var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease)}
.site-header[data-scrolled="true"] .nav-capsule{
  padding-block:7px;
  background:rgba(13,14,11,.95);
  border-color:rgba(201,162,75,.5);
  box-shadow:0 16px 36px -26px #000}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0}
.brand-mark{
  position:relative;width:26px;height:26px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--gold-bright) 0%,var(--gold) 52%,#8A6A2A 100%);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
  transition:transform var(--dur) var(--ease)}
.brand-mark::after{
  content:"";position:absolute;inset:8px;background:var(--ink);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}
.brand:hover .brand-mark{transform:rotate(45deg)}
.brand-text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand-name{
  font-family:var(--font-display);font-weight:800;font-size:1.0625rem;
  letter-spacing:.04em;line-height:1.2;color:var(--gold-bright);white-space:nowrap}
.brand-latin{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.22em;
  text-transform:uppercase;color:rgba(185,176,160,.82);line-height:1.4;white-space:nowrap}

/* 导航 */
.primary-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(4px,1.3vw,18px);flex-wrap:nowrap}
.nav-item{flex:0 0 auto}
.nav-link{
  position:relative;display:inline-block;padding:6px 2px;
  font-size:.875rem;letter-spacing:.01em;color:rgba(242,234,218,.78);
  transition:color var(--dur-fast) var(--ease);white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:18px;height:2px;
  background:var(--gold);opacity:0;
  transform:translate(-50%,4px) scaleX(.2);transform-origin:50% 50%;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-link:hover{color:var(--gold-bright)}
.nav-link:hover::after{opacity:1;transform:translate(-50%,0) scaleX(1)}
.nav-link[aria-current="page"]{color:var(--gold-bright)}
.nav-link[aria-current="page"]::after{opacity:1;transform:translate(-50%,0) scaleX(1)}

/* 右侧工具 */
.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.header-meta{
  font-size:11px;line-height:1.5;letter-spacing:.04em;
  color:rgba(185,176,160,.8);
  padding-left:14px;border-left:1px solid var(--line-ink);
  max-width:11em}
.version-badge{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--gold);border:1px solid var(--line-strong);
  padding:3px 9px;border-radius:999px;white-space:nowrap;
  background:rgba(201,162,75,.08)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line-strong);cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease)}
.nav-toggle:hover{border-color:var(--gold-bright);background:rgba(201,162,75,.12)}
.nav-toggle-bar{
  display:block;width:16px;height:1.5px;background:var(--paper);
  transition:transform var(--dur) var(--ease),opacity var(--dur-fast) var(--ease)}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:999px;border:1px solid transparent;
  font-size:var(--fs-14);font-weight:500;letter-spacing:.02em;line-height:1.3;
  cursor:pointer;text-align:center;
  transition:background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             transform var(--dur-fast) var(--ease)}
.btn:active{transform:translateY(1px)}
.btn--sm{padding:7px 15px;font-size:.8125rem}
.btn--gold{
  background:linear-gradient(100deg,var(--gold) 0%,#DCBB78 100%);
  color:#171812;font-weight:600}
.btn--gold:hover{background:linear-gradient(100deg,var(--gold-bright) 0%,var(--gold) 100%)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-strong)}
.btn--ghost:hover{color:var(--gold-bright);border-color:var(--gold-bright);background:rgba(201,162,75,.1)}
.btn--ink{background:transparent;color:var(--brown);border-color:rgba(43,32,24,.34)}
.btn--ink:hover{color:#171812;border-color:var(--brown);background:rgba(43,32,24,.07)}

/* ---------- 容器与分区 ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(48px,7vw,96px);position:relative}
.section--paper{background:var(--paper);color:var(--brown)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--ink .page-lead,
.section--ink .prose{color:rgba(242,234,218,.9)}
.section--ink .eyebrow,
.section--ink .media-caption,
.section--ink .stat-label{color:var(--ash)}

.hairline{height:1px;width:100%;border:0;background:var(--line);margin-block:clamp(20px,3vw,32px)}
.section--ink .hairline{background:var(--line-ink)}

/* ---------- 内页标题区 ---------- */
.page-head{padding-block:clamp(28px,5vw,56px) clamp(18px,3vw,32px)}
.eyebrow{
  display:block;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--fog);margin-bottom:14px}
.page-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2rem,4.6vw,3.25rem);line-height:1.14;letter-spacing:.02em}
.page-lead{
  margin-top:16px;max-width:56ch;font-size:clamp(1rem,1.5vw,1.125rem);
  line-height:1.8;color:var(--paper-text-soft)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(20px,3vw,36px)}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--flip{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.grid--two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--three{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 切角面板 ---------- */
.panel{
  position:relative;padding:clamp(18px,2.4vw,28px);
  background:rgba(255,255,255,.42);
  border:1px solid var(--line)}
.panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  padding-bottom:calc(clamp(18px,2.4vw,28px) + 8px)}
.section--ink .panel{background:rgba(27,28,23,.86);border-color:var(--line-ink)}

/* ---------- 目录索引节点 ---------- */
.index-node{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  gap:14px;align-items:baseline;
  padding:14px 2px;border-bottom:1px solid var(--line);
  color:var(--brown);
  transition:color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             padding-left var(--dur) var(--ease)}
.index-node:hover,.index-node:focus-visible{
  color:#6B4A12;border-color:var(--gold);padding-left:6px}
.index-node-num{font-family:var(--font-mono);font-size:11.5px;color:var(--fog);letter-spacing:.08em}
.index-node-label{font-family:var(--font-display);font-weight:700;font-size:1.0625rem;letter-spacing:.02em}
.index-node-meta{font-family:var(--font-mono);font-size:11.5px;color:var(--fog);white-space:nowrap}
.section--ink .index-node{color:var(--paper);border-color:var(--line-ink)}
.section--ink .index-node:hover,.section--ink .index-node:focus-visible{
  color:var(--gold-bright);border-color:var(--gold)}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  background:var(--ink-2);border:1px solid var(--line-ink)}
.media::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    repeating-linear-gradient(12deg,rgba(201,162,75,.16) 0 1px,transparent 1px 22px),
    repeating-linear-gradient(102deg,rgba(46,107,93,.14) 0 1px,transparent 1px 34px),
    radial-gradient(120% 90% at 82% 10%,rgba(201,162,75,.3),transparent 62%);
  transition:transform var(--dur-slow) var(--ease)}
.media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;z-index:2;
  background:linear-gradient(90deg,var(--gold),rgba(201,162,75,0) 72%)}
.media:hover::before{transform:scale(1.03)}
.media > img,.media > picture > img{
  position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut-lg)),calc(100% - var(--cut-lg)) 100%,0 100%)}
.media-caption{
  margin-top:9px;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.03em;color:var(--fog)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border-radius:2px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  background:rgba(46,107,93,.12);color:var(--jade);border:1px solid rgba(46,107,93,.34)}
.tag--red{background:rgba(178,58,47,.1);color:var(--vermilion);border-color:rgba(178,58,47,.34)}
.tag--gold{background:rgba(201,162,75,.16);color:#7A5C1C;border-color:rgba(201,162,75,.5)}
.section--ink .tag{color:#8FC4B6;background:rgba(46,107,93,.2);border-color:rgba(46,107,93,.5)}
.section--ink .tag--red{color:#E7A79F;background:rgba(178,58,47,.2);border-color:rgba(178,58,47,.5)}
.section--ink .tag--gold{color:var(--gold-bright);background:rgba(201,162,75,.16);border-color:rgba(201,162,75,.5)}

/* ---------- 筛选 chip ---------- */
.chip-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);background:transparent;
  font-size:.8125rem;letter-spacing:.02em;color:var(--brown);cursor:pointer;
  transition:background-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease)}
.chip:hover{border-color:var(--gold);color:#6B4A12}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--gold-bright);border-color:var(--ink)}
.section--ink .chip{color:var(--paper);border-color:var(--line-strong);background:rgba(27,28,23,.6)}
.section--ink .chip:hover{border-color:var(--gold-bright);color:var(--gold-bright)}
.section--ink .chip[aria-pressed="true"]{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.filter-count{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--fog)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--fog)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:rgba(139,116,66,.7)}
.breadcrumb-link{color:inherit;border-bottom:1px solid transparent;transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease)}
.breadcrumb-link:hover{color:#6B4A12;border-color:var(--gold)}
.section--ink .breadcrumb{color:var(--ash)}
.section--ink .breadcrumb-link:hover{color:var(--gold-bright)}

/* ---------- 长文 ---------- */
.prose{max-width:68ch;font-size:var(--fs-16);line-height:1.85;color:var(--brown)}
.prose > * + *{margin-top:1.05em}
.prose h2{font-family:var(--font-display);font-weight:800;font-size:clamp(1.35rem,2.4vw,1.75rem);line-height:1.35;letter-spacing:.02em;margin-top:2em}
.prose h3{font-family:var(--font-display);font-weight:700;font-size:clamp(1.1rem,1.8vw,1.25rem);margin-top:1.6em}
.prose ul,.prose ol{padding-left:0}
.prose li{position:relative;padding-left:18px}
.prose li + li{margin-top:.45em}
.prose li::before{content:"";position:absolute;left:0;top:.82em;width:8px;height:1px;background:var(--gold)}
.prose a{color:#6B4A12;border-bottom:1px solid var(--gold);transition:color var(--dur-fast) var(--ease)}
.prose a:hover{color:var(--vermilion);border-color:var(--vermilion)}
.prose strong{font-weight:600;color:#1F170F}

/* ---------- 概览数字 ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-number{
  font-family:var(--font-mono);font-weight:500;line-height:.95;letter-spacing:-.02em;
  font-size:clamp(2.1rem,5.6vw,3.5rem);color:var(--gold)}
.stat-label{font-size:.8125rem;letter-spacing:.04em;color:var(--fog)}

/* ---------- 动效工具 ---------- */
.reveal{
  opacity:0;transform:translate3d(0,8px,0);
  transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:300;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--gold),var(--vermilion));
  pointer-events:none;transition:transform 120ms linear}

.back-to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:150;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;border-radius:999px;
  border:1px solid rgba(201,162,75,.55);
  background:rgba(13,14,11,.92);color:var(--gold-bright);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;cursor:pointer;
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),background-color var(--dur-fast) var(--ease)}
.back-to-top.is-on{opacity:1;transform:none;pointer-events:auto}
.back-to-top:hover{background:rgba(27,28,23,.98);border-color:var(--gold-bright)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink);color:var(--ash);
  border-top:1px solid var(--line-ink)}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold) 0%,rgba(201,162,75,.35) 38%,rgba(201,162,75,0) 78%)}
.footer-inner{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--gutter) 26px}
.footer-top{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(28px,5vw,64px);align-items:start}
.footer-brand{
  display:flex;flex-direction:column;gap:10px;
  padding-right:clamp(0px,3vw,28px);
  border-right:1px solid var(--line-ink)}
.footer-brand-name{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.25rem,2.4vw,1.625rem);letter-spacing:.04em;
  line-height:1.2;color:var(--paper)}
.footer-brand-latin{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--gold)}
.footer-note{
  margin-top:6px;max-width:26ch;font-size:.8125rem;line-height:1.75;
  color:rgba(185,176,160,.88)}
.footer-quick-note{
  align-self:flex-start;margin-top:6px;padding-bottom:2px;
  font-size:.8125rem;color:var(--gold-bright);
  border-bottom:1px dashed rgba(201,162,75,.55);
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease)}
.footer-quick-note:hover{color:#F6E4B8;border-color:var(--gold-bright)}

.footer-cols{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,3vw,34px)}
.footer-col{min-width:0}
.footer-col-title{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-body);font-size:11.5px;font-weight:600;
  letter-spacing:.18em;text-transform:none;color:var(--paper);
  padding-bottom:10px;margin-bottom:12px;
  border-bottom:1px solid var(--line-ink)}
.footer-col-title::before{
  content:"";width:12px;height:2px;flex:0 0 auto;background:var(--gold)}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:.8125rem;line-height:1.7}
.footer-link{
  display:inline-block;color:rgba(242,234,218,.74);
  border-bottom:1px solid transparent;
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease)}
.footer-link:hover{color:var(--gold-bright);border-bottom-color:rgba(233,203,132,.6)}
.footer-text{color:rgba(185,176,160,.92);overflow-wrap:anywhere}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 22px;
  margin-top:clamp(28px,4vw,48px);padding-top:18px;
  border-top:1px solid var(--line-ink);
  font-size:.75rem;line-height:1.7;color:rgba(185,176,160,.82)}
.footer-legal,.footer-icp{
  font-family:var(--font-mono);letter-spacing:.05em;color:rgba(185,176,160,.9)}
.footer-contact-note{
  flex:1 1 320px;min-width:220px;color:rgba(185,176,160,.7)}

/* ---------- 响应式 ---------- */
@media (max-width:1360px){
  .header-meta{display:none}
}
@media (max-width:1100px){
  .nav-list{gap:6px}
  .nav-link{font-size:.8125rem}
  .brand-latin{font-size:9px;letter-spacing:.18em}
}
@media (max-width:980px){
  .site-header{padding-top:10px}
  .nav-capsule{
    flex-wrap:wrap;gap:10px;row-gap:0;
    padding:10px 12px 10px 14px;border-radius:22px}
  .primary-nav{
    order:3;flex:1 1 100%;width:100%;display:none;
    justify-content:flex-start;
    margin-top:8px;padding-top:8px;
    border-top:1px solid var(--line-ink)}
  .site-header[data-open="true"] .primary-nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-item{width:100%}
  .nav-link{
    display:block;padding:12px 10px;border-radius:12px;font-size:.9375rem}
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link[aria-current="page"]{background:rgba(201,162,75,.12)}
  .nav-toggle{display:inline-flex}
  .header-tools{margin-left:auto;gap:8px}
  .grid--split,.grid--flip,.grid--two,.grid--three{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-brand{border-right:0;border-bottom:1px solid var(--line-ink);padding:0 0 22px}
  .footer-note{max-width:42ch}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
}
@media (max-width:620px){
  .brand-name{font-size:.9375rem}
  .version-badge{display:none}
  .header-tools .btn--gold{padding:6px 12px;font-size:.75rem}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{gap:8px 14px}
  .footer-contact-note{flex:1 1 100%}
  .back-to-top{padding:9px 13px;font-size:11px}
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .media:hover::before{transform:none}
  .brand:hover .brand-mark{transform:none}
}