/* ============================================================
   棋牌指南 · 共享样式表 /assets/site.css
   暖纸 × 深墨 × 红土赤 × 翡翠 × 鎏金 / 粗野主义 Bento
   ============================================================ */

:root{
  --paper:#F4EDE2;
  --paper-2:#EAE0D1;
  --ink:#14161C;
  --red:#A8382A;
  --night:#1B2440;
  --emerald:#0F6B4F;
  --emerald-bright:#12A87A;
  --gold:#D9A419;
  --gold-deep:#9A7212;
  --slate:#5A6473;
  --alert:#E4572E;

  --line:rgba(20,22,28,.14);
  --line-strong:rgba(20,22,28,.28);
  --paper-70:rgba(244,237,226,.72);
  --paper-45:rgba(244,237,226,.45);

  --ease:cubic-bezier(.22,1,.36,1);
  --shell:1360px;
  --header-h:88px;

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

/* ---------- 1. RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--paper);
  background-image:radial-gradient(rgba(20,22,28,.055) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
table{border-collapse:collapse}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:2px}
#main-content{scroll-margin-top:calc(var(--header-h) + 16px)}

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

.skip-link{
  position:fixed;top:.6rem;left:.6rem;z-index:200;
  transform:translateY(-180%);
  background:var(--ink);color:var(--paper);
  border:2px solid var(--gold);
  padding:.7rem 1.05rem;
  font-size:14px;font-weight:900;letter-spacing:.06em;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 2. 布局容器与网格 ---------- */
.shell{width:min(var(--shell),100% - 2.5rem);margin-inline:auto}
.section{padding-block:clamp(2.5rem,6vw,5rem)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:1.25rem}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.rail{
  grid-column:span 1;
  border-left:2px dashed var(--line-strong);
  padding-left:.5rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--slate);
  writing-mode:vertical-rl;
}
.measure{max-width:68ch}

/* ---------- 3. 中文排版层级 ---------- */
.display-title{
  font-family:var(--font-display);
  font-size:clamp(32px,4.4vw,64px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.01em;
}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(26px,3vw,40px);
  font-weight:700;
  line-height:1.18;
  letter-spacing:-.005em;
}
.block-title{
  font-family:var(--font-sans);
  font-size:clamp(20px,2vw,26px);
  font-weight:900;
  line-height:1.3;
  letter-spacing:.005em;
}
.block-title::after{
  content:"";display:block;width:36px;height:4px;background:var(--red);margin-top:.55rem;
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--red);font-weight:600;
}
.lede{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.8;
  color:rgba(20,22,28,.82);
  max-width:64ch;
}
.prose{max-width:68ch;font-size:17px;line-height:1.75}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.4em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.35em 0}
.prose a{color:var(--red);text-decoration:underline;text-underline-offset:4px}
.prose h2,.prose h3{margin:1.8em 0 .6em;line-height:1.3}
.prose strong{font-weight:900}

.conclusion-band{
  display:grid;gap:.4rem;
  padding:1.5rem 1.75rem;
  border-left:8px solid var(--red);
  background:var(--night);
  color:var(--paper);
}
.band-number{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(36px,6vw,80px);
  line-height:1;
  color:var(--gold);
}
.band-text{font-size:clamp(16px,1.5vw,20px);line-height:1.6;color:var(--paper-70)}

/* ---------- 4. 按钮 / 胶囊 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.72rem 1.15rem;
  font-size:15px;font-weight:900;letter-spacing:.03em;
  border:2px solid var(--ink);
  background:var(--paper);color:var(--ink);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 var(--ink)}
.btn--primary{background:var(--red);color:#fff;border-color:var(--ink);box-shadow:4px 4px 0 rgba(20,22,28,.9)}
.btn--primary:hover{background:#B94030;box-shadow:6px 6px 0 rgba(20,22,28,.9)}
.btn--gold{background:var(--gold);color:var(--ink);border-color:var(--ink)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--onDark{background:transparent;color:var(--gold);border-color:var(--gold)}
.btn--onDark:hover{background:rgba(217,164,25,.14);box-shadow:4px 4px 0 rgba(217,164,25,.4)}

.chip{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.35rem .7rem;
  border:2px solid var(--ink);
  background:transparent;color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.08em;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.chip:hover{background:rgba(217,164,25,.2)}
.chip[aria-pressed="true"],.chip.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.badge{
  display:inline-flex;align-items:center;
  padding:.2rem .55rem;
  font-size:12px;font-weight:900;letter-spacing:.08em;
  border:2px solid var(--ink);
  background:var(--paper);color:var(--ink);
}
.badge--gold{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.badge--red{background:var(--red);border-color:var(--red);color:#fff}
.badge--emerald{background:var(--emerald);border-color:var(--emerald);color:#fff}
.badge--live{background:var(--emerald-bright);border-color:var(--emerald-bright);color:var(--ink)}

/* ---------- 5. 面板 / Bento 单元 ---------- */
.panel{
  background:var(--paper);
  border:3px solid var(--ink);
  box-shadow:6px 6px 0 rgba(20,22,28,.9);
  padding:1.25rem;
}
.panel--dark{background:var(--night);color:var(--paper);border-color:var(--ink);box-shadow:6px 6px 0 var(--red)}
.panel--dark .block-title{color:var(--paper)}
.panel--red{background:var(--red);color:#fff;border-color:var(--ink);box-shadow:6px 6px 0 var(--gold)}
.panel--red .block-title{color:#fff}
.panel--red .block-title::after{background:var(--gold)}
.panel--gold{background:var(--gold);color:var(--ink);border-color:var(--ink);box-shadow:6px 6px 0 var(--ink)}
.panel--flat{box-shadow:none;background:transparent;border:0;padding:0}
.panel-title{font-size:15px;font-weight:900;letter-spacing:.06em;margin-bottom:.6rem}

/* ---------- 6. 数据表 ---------- */
.data-table{width:100%;font-variant-numeric:tabular-nums;font-size:15px}
.data-table th,.data-table td{padding:.65rem .75rem;text-align:left;border-bottom:1px solid var(--line)}
.data-table thead th{
  font-size:12px;font-weight:900;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate);border-bottom:2px solid var(--ink);
}
.data-table tbody tr{transition:background-color .18s var(--ease)}
.data-table tbody tr:hover{background:rgba(217,164,25,.14)}
.data-table .num{font-family:var(--font-mono)}

/* ---------- 7. 可展开内容组 ---------- */
.disclosure{border:2px solid var(--ink);background:var(--paper)}
.disclosure + .disclosure{margin-top:.75rem}
.disclosure>summary{
  list-style:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;
  padding:1rem 1.15rem;
  font-size:17px;font-weight:900;line-height:1.5;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.disclosure>summary::-webkit-details-marker{display:none}
.disclosure>summary::after{
  content:"+";flex:0 0 auto;font-family:var(--font-mono);font-size:20px;line-height:1;color:var(--red);
}
.disclosure[open]>summary{background:var(--ink);color:var(--paper)}
.disclosure[open]>summary::after{content:"–";color:var(--gold)}
.disclosure-body{padding:1.1rem 1.15rem 1.3rem;border-top:1px dashed var(--line-strong)}

/* ---------- 8. 比分条 ---------- */
.score-rail{
  position:fixed;right:0;top:50%;transform:translateY(-50%);
  z-index:60;display:flex;flex-direction:column;gap:.5rem;width:82px;
}
.score-item{
  background:var(--ink);color:var(--paper);
  border-top:2px solid var(--gold);
  padding:.45rem .55rem;
  font-size:11px;letter-spacing:.06em;
}
.score-num{
  display:block;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:18px;line-height:1.2;color:var(--gold);
}

/* ---------- 9. 图像占位容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:3px solid var(--ink);
  background:var(--night);
  box-shadow:6px 6px 0 rgba(20,22,28,.85);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--checker::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-conic-gradient(from 0deg,rgba(217,164,25,.22) 0deg 90deg,transparent 90deg 180deg);
  background-size:56px 56px;
}
.media-frame--diagonal::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(135deg,rgba(168,56,42,.6),rgba(168,56,42,0) 58%);
}
.media-frame figcaption{
  position:absolute;left:0;bottom:0;right:0;
  padding:.6rem .8rem;
  background:rgba(20,22,28,.82);color:var(--paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
}
.media-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs{padding:1rem 0;font-size:13px;letter-spacing:.04em;color:var(--slate)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem}
.breadcrumbs li{display:flex;align-items:center;gap:.4rem}
.breadcrumbs li:not(:last-child)::after{content:"/";color:var(--gold-deep)}
.breadcrumbs a{color:var(--slate)}
.breadcrumbs a:hover{color:var(--red)}
.breadcrumbs [aria-current="page"]{color:var(--ink);font-weight:700}

/* ---------- 11. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  color:var(--paper);
  background:transparent;
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,22,28,.9) 0%,rgba(20,22,28,.62) 58%,rgba(20,22,28,0) 100%);
  transition:opacity .3s var(--ease);
}
.site-header--solid{
  background:var(--ink);
  box-shadow:0 5px 0 -2px var(--red),0 16px 32px rgba(20,22,28,.24);
  --header-h:68px;
}
.site-header--solid::after{opacity:0}

.header-progress{
  position:absolute;left:0;bottom:0;height:3px;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--red),var(--gold),var(--emerald-bright));
  z-index:3;
}
.header-inner{
  position:relative;z-index:2;
  width:min(var(--shell),100% - 2.5rem);
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;align-items:center;gap:1.25rem;
  padding-block:.5rem;
  transition:min-height .3s var(--ease);
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:.7rem;flex:0 0 auto}
.brand-mark{
  display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;
  width:36px;height:36px;flex:0 0 auto;
  border:2px solid var(--gold);background:var(--ink);
}
.brand-mark i:nth-child(1){background:var(--red)}
.brand-mark i:nth-child(2){background:var(--gold)}
.brand-mark i:nth-child(3){background:var(--emerald-bright)}
.brand-mark i:nth-child(4){background:var(--paper)}
.brand-mark--lg{width:48px;height:48px;border-width:3px}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-name{font-family:var(--font-display);font-size:21px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--gold);text-transform:uppercase}

/* 主导航 */
.primary-nav{margin-inline:auto}
.nav-list{display:flex;align-items:center;gap:.15rem}
.nav-item{display:block}
.nav-link{
  display:block;white-space:nowrap;
  padding:.5rem .68rem;
  font-size:15px;font-weight:700;
  color:var(--paper-70);
  border-bottom:3px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link:hover{color:var(--paper);border-bottom-color:var(--gold);background:rgba(244,237,226,.07)}
.nav-link[aria-current="page"]{color:var(--gold);border-bottom-color:var(--red)}

/* 头部工具区 */
.header-utils{display:flex;align-items:center;gap:.5rem;flex:0 0 auto}
.util-btn{
  padding:.42rem .68rem;
  border:2px solid rgba(244,237,226,.38);
  background:transparent;color:inherit;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.util-btn:hover{border-color:var(--gold);color:var(--gold)}
.util-btn[aria-expanded="true"]{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.cta-btn{
  display:inline-block;
  padding:.5rem .9rem;
  background:var(--red);color:#fff;
  border:2px solid var(--gold);
  font-size:14px;font-weight:900;letter-spacing:.04em;
  box-shadow:3px 3px 0 rgba(217,164,25,.4);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.cta-btn:hover{transform:translate(-1px,-1px);background:#B94030;box-shadow:5px 5px 0 rgba(217,164,25,.55)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  width:46px;height:42px;
  align-items:center;justify-content:center;
  border:2px solid var(--gold);background:transparent;
}
.nav-toggle-bars{display:grid;gap:4px;width:22px}
.nav-toggle-bars span{display:block;height:2px;background:var(--paper);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg)}

/* 头部下拉面板 */
.util-popover{
  position:absolute;top:100%;z-index:4;
  right:max(1.25rem,calc((100% - var(--shell)) / 2));
  width:min(320px,calc(100% - 2rem));
}
.util-popover[hidden]{display:none}
.util-panel{
  background:var(--paper);color:var(--ink);
  border:3px solid var(--ink);
  box-shadow:8px 8px 0 var(--red);
  padding:1rem 1.1rem 1.15rem;
}
.util-panel[hidden]{display:none}
.util-panel-title{
  font-size:13px;font-weight:900;letter-spacing:.12em;color:var(--red);
  padding-bottom:.5rem;margin-bottom:.55rem;
  border-bottom:2px solid var(--line);
}
.util-links{display:flex;flex-direction:column}
.util-link{
  display:flex;justify-content:space-between;align-items:center;gap:.75rem;
  padding:.45rem .1rem;
  font-size:15px;font-weight:700;
  border-bottom:1px dashed rgba(20,22,28,.18);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.util-link::after{content:"→";color:var(--gold-deep);font-family:var(--font-mono)}
.util-link:hover{color:var(--red);border-bottom-color:var(--red)}
.util-panel-note{margin:.75rem 0 0;font-size:12.5px;line-height:1.6;color:var(--slate)}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:5rem;
  background:var(--ink);
  color:rgba(244,237,226,.78);
  border-top:5px solid var(--red);
}
.footer-strip{
  height:14px;
  background-image:repeating-conic-gradient(from 0deg,var(--red) 0deg 90deg,var(--night) 90deg 180deg,var(--emerald) 180deg 270deg,var(--gold) 270deg 360deg);
  background-size:28px 28px;
  opacity:.9;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(200px,1.35fr) repeat(3,minmax(120px,.85fr)) minmax(250px,1.5fr);
  gap:2rem 1.5rem;
  padding:3rem 0 2.5rem;
  border-bottom:1px solid rgba(244,237,226,.16);
}
.footer-brand{display:flex;flex-direction:column;gap:.5rem}
.footer-name{margin-top:.35rem;font-family:var(--font-display);font-size:24px;color:var(--paper);letter-spacing:.02em}
.footer-sub{margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;color:var(--gold);text-transform:uppercase}
.footer-note{margin:.5rem 0 0;font-size:14px;color:var(--paper-45);max-width:22ch;line-height:1.7}
.footer-col{display:flex;flex-direction:column}
.footer-col-title{
  position:relative;
  font-size:14px;font-weight:900;letter-spacing:.1em;
  color:var(--paper);
  padding-bottom:.6rem;margin-bottom:1rem;
}
.footer-col-title::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:3px;background:var(--gold)}
.footer-links{display:flex;flex-direction:column;gap:.55rem}
.footer-link{
  display:inline-block;
  font-size:15px;color:var(--paper-70);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--gold);transform:translateX(3px)}

.footer-contact{display:flex;flex-direction:column}
.contact-list{display:flex;flex-direction:column;gap:.7rem}
.contact-line{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem;font-size:14.5px;line-height:1.6}
.contact-label{
  flex:0 0 auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  background:var(--gold);color:var(--ink);
  padding:.1rem .42rem;
}
.contact-value{color:rgba(244,237,226,.88);word-break:break-all}
.copy-btn{
  border:1px solid rgba(244,237,226,.35);
  color:var(--paper-70);
  font-size:11.5px;letter-spacing:.08em;
  padding:.15rem .45rem;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.copy-btn:hover{border-color:var(--gold);color:var(--gold)}
.copy-btn.is-copied{background:var(--emerald);border-color:var(--emerald-bright);color:#fff}
.footer-note-line{margin:.95rem 0 0;font-size:13px;line-height:1.7;color:var(--paper-45)}

.footer-base-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.6rem;
  padding:1.1rem 0 1.5rem;
  font-size:13px;
}
.footer-legal{margin:0;color:var(--paper-70)}
.footer-meta{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--paper-45)}

/* 回到顶部 */
.to-top{
  position:fixed;right:1.25rem;bottom:1.5rem;z-index:70;
  width:46px;height:46px;
  display:grid;place-items:center;
  background:var(--ink);color:var(--gold);
  border:2px solid var(--gold);
  font-family:var(--font-mono);font-size:18px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background-color .18s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--red);color:#fff;border-color:var(--paper)}

/* ---------- 13. 显现动效 ---------- */
.js-reveal [data-reveal]{opacity:0;transform:translateY(12px)}
.js-reveal [data-reveal].is-revealed{
  opacity:1;transform:none;
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1200px){
  .nav-link{padding:.5rem .5rem;font-size:14.5px}
  .footer-grid{grid-template-columns:minmax(180px,1.2fr) repeat(3,minmax(110px,.8fr)) minmax(220px,1.3fr);gap:1.6rem 1.2rem}
}

@media (max-width:1080px){
  .span-5,.span-7,.span-8{grid-column:span 12}
  .span-3,.span-4{grid-column:span 6}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-contact{grid-column:span 2}
}

@media (max-width:900px){
  :root{--header-h:66px}
  body{padding-bottom:66px}
  .header-inner{gap:.7rem;padding-block:.4rem}
  .brand-mark{width:32px;height:32px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:9.5px;letter-spacing:.1em}
  .nav-toggle{display:inline-flex;margin-left:auto}

  .primary-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    margin:0;
    background:var(--ink);
    border-top:2px solid var(--gold);
    padding:.4rem 1.25rem 1.35rem;
    max-height:calc(100vh - var(--header-h) - 66px);
    overflow-y:auto;z-index:5;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .primary-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid rgba(244,237,226,.14)}
  .nav-link{
    font-family:var(--font-display);
    font-size:19px;font-weight:700;
    padding:.85rem .7rem;
    border-bottom:0;border-left:3px solid transparent;
  }
  .nav-link[aria-current="page"]{border-left-color:var(--red);background:rgba(217,164,25,.09)}

  .header-utils{
    position:fixed;left:0;right:0;bottom:0;z-index:95;
    justify-content:space-between;
    gap:.4rem;
    padding:.5rem .9rem calc(.5rem + env(safe-area-inset-bottom,0px));
    background:var(--ink);
    border-top:2px solid var(--gold);
    box-shadow:0 -10px 24px rgba(20,22,28,.3);
  }
  .header-utils .util-btn{flex:1 1 auto;text-align:center}
  .header-utils .cta-btn{display:none}

  .util-popover{
    position:fixed;top:auto;bottom:72px;left:.9rem;right:.9rem;width:auto;
  }
  .to-top{bottom:82px;right:.9rem;width:42px;height:42px}

  body.is-nav-open{overflow:hidden}
  .score-rail{
    top:auto;bottom:66px;right:0;left:0;width:auto;transform:none;
    flex-direction:row;gap:0;overflow-x:auto;
  }
  .score-item{flex:1 1 0;border-top:0;border-left:2px solid var(--gold)}
}

@media (max-width:640px){
  .span-3,.span-4,.span-5,.span-6{grid-column:span 12}
  .section{padding-block:2.25rem}
  .panel{padding:1rem;box-shadow:5px 5px 0 rgba(20,22,28,.85)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:1.75rem;padding:2.25rem 0 2rem}
  .footer-contact{grid-column:span 1}
  .footer-base-inner{justify-content:flex-start}
  .conclusion-band{padding:1.15rem 1.15rem}
  .disclosure>summary{font-size:16px;padding:.85rem 1rem}
}

/* ---------- 15. 降低动效 ---------- */
@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;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .primary-nav{transition:none}
}