/* =========================================================
   大发地址服务 · 共享样式表 /assets/site.css
   设计基调：档案室 × 评测实验室 · 墨蓝承重 暖金点睛 朱砂提醒
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#0F2440;
  --ink-700:#1B355A;
  --ink-soft:#3B4859;
  --gold-500:#C99A3E;
  --gold-200:#F0D9A8;
  --cinnabar-600:#C8402F;
  --paper-50:#F7F4EE;
  --gray-100:#E8E6E1;
  --gray-500:#6B7480;
  --glass-40:rgba(255,255,255,0.55);
  --line:rgba(15,36,64,0.14);
  --line-strong:rgba(15,36,64,0.3);
  --font-head:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Roboto Mono",monospace;
  --radius-s:6px;
  --radius-m:12px;
  --radius-l:20px;
  --shadow-soft:0 18px 44px -30px rgba(15,36,64,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:74px;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ink-900);
  background-color:var(--paper-50);
  background-image:
    radial-gradient(1100px 520px at 90% -8%, rgba(201,154,62,.20), transparent 68%),
    radial-gradient(880px 460px at -10% 2%, rgba(27,53,90,.16), transparent 70%),
    linear-gradient(to right, rgba(15,36,64,.042) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,36,64,.042) 1px, transparent 1px);
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-size:100% 100%,100% 100%,96px 96px,96px 96px;
  background-position:0 0,0 0,0 0,0 0;
  background-attachment:scroll;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.28;letter-spacing:-.01em;margin:0}
p{margin:0}
ul,ol{margin:0}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:3px solid var(--gold-500);outline-offset:3px;border-radius:4px}

/* ---------- 3. 无障碍跳转 ---------- */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:200;
  display:inline-block;padding:10px 18px;
  background:var(--ink-900);color:#fff;
  font-size:14px;font-weight:700;text-decoration:none;
  border-radius:0 0 10px 10px;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 4. 布局容器 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:20px;
}
.container--narrow{max-width:860px}
.section{padding-block:clamp(44px,6.5vw,92px)}
.section--tight{padding-block:clamp(28px,4vw,52px)}
.section--paper{background:linear-gradient(180deg,rgba(232,230,225,.72),rgba(247,244,238,.2))}
.rule{height:1px;border:0;margin:0;background:var(--line)}
.rule--gold{background:linear-gradient(90deg,var(--gold-500),rgba(201,154,62,0))}

/* ---------- 5. 标题组 ---------- */
.section-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--gold-500);
}
.section-kicker::before{
  content:"";display:block;width:26px;height:2px;background:currentColor;flex:none;
}
.section-title{margin-top:10px;font-size:clamp(24px,3.4vw,34px)}
.section-lead{margin-top:12px;max-width:66ch;font-size:16px;color:var(--ink-soft)}
.section-head{margin-bottom:clamp(22px,3vw,36px)}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,238,.88);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.header-bar{
  display:flex;align-items:center;gap:18px;
  min-height:var(--header-h);
}
.brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--ink-900);flex:none;
}
.brand-mark{
  width:42px;height:42px;flex:none;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--ink-900) 0%,var(--ink-700) 58%,var(--gold-500) 100%);
  color:var(--gold-200);
  font-family:var(--font-head);font-size:20px;font-weight:900;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(240,217,168,.38);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-family:var(--font-head);font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-version{
  font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  color:var(--gold-500);
}

.nav{margin-left:auto}
.nav-list{
  display:flex;align-items:center;gap:2px;
  list-style:none;padding:0;
}
.nav-item{display:block}
.nav-link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:9px 12px;border-radius:9px;
  border:1px solid transparent;
  font-size:15px;font-weight:500;color:var(--ink-700);
  text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.nav-num{
  font-family:var(--font-num);font-size:10px;letter-spacing:.06em;
  color:var(--gray-500);font-variant-numeric:tabular-nums;
}
.nav-link:hover{color:var(--ink-900);background:var(--glass-40);border-color:var(--line)}
.nav-link[aria-current="page"]{
  color:var(--ink-900);font-weight:700;
  border-color:rgba(201,154,62,.65);
  background:linear-gradient(180deg,rgba(240,217,168,.6),rgba(240,217,168,.18));
}
.nav-link[aria-current="page"] .nav-num{color:var(--cinnabar-600)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border-radius:10px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.62);
  font-size:14px;font-weight:700;color:var(--ink-900);
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold-500)}
.nav-toggle-bars{
  display:inline-flex;flex-direction:column;justify-content:space-between;
  width:18px;height:12px;flex:none;
}
.nav-toggle-bars i{
  display:block;height:2px;border-radius:2px;background:var(--ink-900);
  transition:transform .26s var(--ease),opacity .18s var(--ease);
}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.header-cta{flex:none;margin-left:6px}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;
  width:100%;height:2px;
  background:linear-gradient(90deg,var(--gold-500),var(--cinnabar-600));
  transform:scaleX(0);transform-origin:0 50%;
  pointer-events:none;
  transition:transform .12s linear;
}

/* ---------- 7. 按钮与文字链 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-head);font-size:15px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--gold{
  background:linear-gradient(140deg,#DBB05C,var(--gold-500));
  color:#241804;
  box-shadow:0 12px 26px -16px rgba(201,154,62,.95);
}
.btn--gold:hover{transform:translateY(-1px);box-shadow:0 18px 32px -18px rgba(201,154,62,1)}
.btn--ghost{
  border-color:var(--line-strong);
  background:rgba(255,255,255,.5);
  color:var(--ink-900);
}
.btn--ghost:hover{border-color:var(--gold-500);background:rgba(240,217,168,.4)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  text-decoration:none;
  border-bottom:1px solid var(--gold-500);padding-bottom:2px;
  transition:color .2s var(--ease);
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--cinnabar-600)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 8. 面包屑与标记 ---------- */
.breadcrumb{padding-block:18px 4px}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;padding:0;margin:0;
  font-size:13px;color:var(--gray-500);
}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li + li::before{content:"/";color:var(--line-strong)}
.breadcrumb-list a{color:var(--ink-700);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.breadcrumb-list a:hover{color:var(--gold-500);border-bottom-color:currentColor}
.breadcrumb-current{color:var(--ink-900);font-weight:700}
.version-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:var(--radius-s);
  border:1px solid rgba(201,154,62,.5);
  background:rgba(240,217,168,.4);
  font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.14em;
  color:#6B4D10;
}
.version-badge::before{content:"—";color:var(--cinnabar-600)}

/* ---------- 9. Bento 网格与卡片 ---------- */
.bento-grid{
  display:grid;grid-template-columns:repeat(12,1fr);
  gap:16px;
}
.bento-card{
  grid-column:span 4;
  display:flex;flex-direction:column;gap:12px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:rgba(255,255,255,.86);
  box-shadow:var(--shadow-soft);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.bento-card:hover{border-color:rgba(201,154,62,.7);transform:translateY(-2px)}
.bento-card--half{grid-column:span 6}
.bento-card--wide{grid-column:span 8}
.bento-card--full{grid-column:span 12}
.bento-card--glass{
  background:var(--glass-40);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-color:rgba(255,255,255,.75);
}
.bento-card--ink{
  background:linear-gradient(155deg,var(--ink-900),var(--ink-700));
  border-color:rgba(240,217,168,.28);
  color:rgba(255,255,255,.86);
}
.bento-card--ink .card-title,.bento-card--ink .stat-figure{color:#fff}
.bento-card--ink .card-text{color:rgba(255,255,255,.76)}
.card-title{font-family:var(--font-head);font-size:20px;font-weight:800;color:var(--ink-900)}
.card-text{font-size:15px;color:var(--ink-soft)}
.glass-panel{
  border:1px solid rgba(255,255,255,.78);
  border-radius:var(--radius-l);
  background:var(--glass-40);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-soft);
}

/* ---------- 10. 数据展示 ---------- */
.stat-frame{
  padding:18px 20px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-m);
  background:rgba(255,255,255,.62);
}
.stat-figure{
  display:block;
  font-family:var(--font-head);
  font-size:clamp(38px,6vw,68px);
  font-weight:900;line-height:1;letter-spacing:-.03em;
  color:var(--ink-900);
  font-variant-numeric:tabular-nums;
}
.stat-unit{
  margin-left:6px;
  font-size:.36em;font-weight:700;letter-spacing:.08em;
  color:var(--gold-500);
}
.stat-label{
  margin-top:8px;
  font-size:13px;letter-spacing:.1em;color:var(--gray-500);
}
.stat-group{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}

/* ---------- 11. 标签与状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  border:1px solid transparent;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  white-space:nowrap;
}
.tag--gold{background:rgba(240,217,168,.62);color:#6B4D10;border-color:rgba(201,154,62,.5)}
.tag--ink{background:rgba(27,53,90,.1);color:var(--ink-700);border-color:rgba(27,53,90,.22)}
.tag--red{background:rgba(200,64,47,.12);color:var(--cinnabar-600);border-color:rgba(200,64,47,.3)}
.status-dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;flex:none;
  background:var(--cinnabar-600);
  box-shadow:0 0 0 3px rgba(200,64,47,.16);
}
.status-dot--gold{background:var(--gold-500);box-shadow:0 0 0 3px rgba(201,154,62,.2)}
.status-dot--ink{background:var(--ink-700);box-shadow:0 0 0 3px rgba(27,53,90,.14)}

/* ---------- 12. 索引列表与索引导航 ---------- */
.index-list{list-style:none;padding:0;display:grid;gap:10px}
.index-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(255,255,255,.72);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.index-item:hover{border-color:rgba(201,154,62,.7);transform:translateX(3px);background:#fff}
.index-num{
  flex:none;padding-top:3px;
  font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--gold-500);font-variant-numeric:tabular-nums;
}
.index-body{display:flex;flex-direction:column;gap:4px;min-width:0}

.index-nav{position:relative}
.index-nav-list{list-style:none;padding:0;display:grid;gap:2px}
.index-nav-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:10px;
  border-left:2px solid transparent;
  font-size:14px;color:var(--gray-500);text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.index-nav-link::before{
  content:"";width:6px;height:6px;border-radius:50%;flex:none;
  background:var(--line-strong);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.index-nav-link:hover{color:var(--ink-900);background:rgba(255,255,255,.66)}
.index-nav-link.is-active,
.index-nav-link[aria-current="true"]{
  color:var(--ink-900);font-weight:700;
  border-left-color:var(--gold-500);
  background:linear-gradient(90deg,rgba(240,217,168,.6),rgba(240,217,168,0));
}
.index-nav-link.is-active::before,
.index-nav-link[aria-current="true"]::before{background:var(--gold-500);transform:scale(1.25)}

/* ---------- 13. 表格 ---------- */
.ledger-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:#fff;
}
.ledger-table{width:100%;min-width:640px;font-size:14.5px}
.ledger-table thead th{
  padding:13px 16px;
  background:var(--ink-700);color:#fff;
  text-align:left;font-size:13px;font-weight:700;letter-spacing:.08em;
  white-space:nowrap;
}
.ledger-table tbody td{
  padding:13px 16px;
  border-top:1px solid var(--line);
  color:var(--ink-soft);vertical-align:top;
}
.ledger-table tbody tr:nth-child(even) td{background:rgba(232,230,225,.45)}
.ledger-table tbody tr:hover td{background:rgba(240,217,168,.3)}
.ledger-table strong{color:var(--ink-900)}

/* ---------- 14. 手风琴 ---------- */
.accordion{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;background:#fff;
}
.accordion-item + .accordion-item{border-top:1px solid var(--line)}
.accordion-trigger{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 20px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--ink-900);
  transition:background .2s var(--ease);
}
.accordion-trigger:hover{background:rgba(240,217,168,.28)}
.accordion-trigger[aria-expanded="true"]{background:rgba(240,217,168,.34)}
.accordion-index{
  flex:none;min-width:30px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;
  color:var(--gray-500);font-variant-numeric:tabular-nums;
}
.accordion-icon{
  position:relative;margin-left:auto;width:18px;height:18px;flex:none;
}
.accordion-icon::before,
.accordion-icon::after{
  content:"";position:absolute;left:0;top:50%;width:100%;height:2px;
  background:var(--gold-500);transform:translateY(-50%);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.accordion-icon::after{transform:translateY(-50%) rotate(90deg)}
.accordion-trigger[aria-expanded="true"] .accordion-icon::after{transform:translateY(-50%) rotate(0deg);opacity:.25}
.accordion-panel{
  padding:0 20px 20px 64px;
  font-size:15px;color:var(--ink-soft);
  animation:panelIn .28s var(--ease);
}
.accordion-panel[hidden]{display:none}
@keyframes panelIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}

/* ---------- 15. 标签页筛选 ---------- */
.tab-bar{display:flex;flex-wrap:wrap;gap:8px}
.tab-button{
  padding:9px 16px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.62);
  font-size:14px;font-weight:700;color:var(--ink-700);
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.tab-button:hover{border-color:var(--gold-500);color:var(--ink-900)}
.tab-button[aria-selected="true"]{
  background:linear-gradient(140deg,var(--ink-900),var(--ink-700));
  border-color:var(--ink-900);color:#fff;
}
.tab-panel[hidden]{display:none}

/* ---------- 16. 图片容器（页面阶段放入 img） ---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:
    radial-gradient(520px 260px at 82% 8%, rgba(240,217,168,.5), transparent 70%),
    linear-gradient(150deg,var(--ink-900),var(--ink-700) 58%,var(--gold-500));
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--band{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--map{aspect-ratio:4/3}
.media-frame--flat{
  background:linear-gradient(150deg,var(--gray-100),rgba(255,255,255,.6));
  border-color:var(--line-strong);
}

/* ---------- 17. 页脚 ---------- */
.site-footer{
  margin-top:clamp(40px,7vw,96px);
  position:relative;
  background:linear-gradient(180deg,var(--ink-900) 0%,#0B1B31 62%,#08182C 100%);
  color:rgba(255,255,255,.76);
  border-top:3px solid var(--gold-500);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:32px;
  padding-block:clamp(38px,5.5vw,68px);
}
.footer-col{min-width:0}
.footer-col--brand{display:flex;flex-direction:column;gap:14px}
.brand--footer{color:#fff}
.brand--footer .brand-name{color:#fff}
.brand--footer .brand-version{color:var(--gold-200)}
.brand--footer .brand-mark{
  background:linear-gradient(150deg,var(--gold-500),#8E6A22);
  color:var(--ink-900);
  box-shadow:inset 0 0 0 1px rgba(15,36,64,.35);
}
.footer-note{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:34ch}
.footer-version{
  font-family:var(--font-num);font-size:12px;letter-spacing:.12em;
  color:var(--gold-200);
}
.footer-version strong{color:#fff;font-size:14px}
.footer-title{
  margin-bottom:14px;
  font-size:12px;font-weight:700;letter-spacing:.2em;
  color:var(--gold-200);
}
.footer-list{list-style:none;padding:0;display:grid;gap:9px}
.footer-list a{
  font-size:14px;color:rgba(255,255,255,.75);text-decoration:none;
  border-bottom:1px solid transparent;padding-bottom:1px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-list a:hover{color:var(--gold-200);border-bottom-color:rgba(240,217,168,.7)}
.footer-contact{list-style:none;padding:0;display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-key{
  display:block;
  font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  color:var(--gold-500);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.footer-links a{color:rgba(255,255,255,.68);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:var(--gold-200)}
.footer-icp{font-family:var(--font-num);letter-spacing:.08em;color:rgba(255,255,255,.72)}

/* ---------- 18. 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:22px;z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  font-size:13px;font-weight:700;color:var(--ink-900);
  cursor:pointer;box-shadow:var(--shadow-soft);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{border-color:var(--gold-500);background:rgba(240,217,168,.9);transform:translateY(-2px)}
.to-top[hidden]{display:none}

/* ---------- 19. 显现动效 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- 20. 响应式 ---------- */
@media (max-width:1024px){
  .bento-card{grid-column:span 6}
  .bento-card--wide{grid-column:span 12}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}
  .footer-col--brand{grid-column:1 / -1}
}

@media (max-width:920px){
  .header-bar{flex-wrap:wrap;gap:10px;padding-block:10px;min-height:0}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-cta{display:none}
  .nav{
    order:3;flex-basis:100%;margin-left:0;
    display:none;
    border-top:1px solid var(--line);
    margin-top:6px;
  }
  .site-header[data-open] .nav{display:block;padding-block:10px 14px}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    justify-content:flex-start;
    padding:13px 10px;border-radius:10px;
    border-bottom:1px solid var(--line);
    font-size:16px;
  }
  .nav-item:last-child .nav-link{border-bottom:0}
  .nav-link[aria-current="page"]{background:linear-gradient(90deg,rgba(240,217,168,.6),rgba(240,217,168,.05));border-color:transparent;border-bottom-color:var(--line)}
}

@media (max-width:640px){
  body{font-size:15.5px}
  .container{padding-inline:16px}
  .bento-card,
  .bento-card--half,
  .bento-card--wide,
  .bento-card--full{grid-column:span 12}
  .bento-card{padding:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .stat-figure{font-size:clamp(34px,11vw,52px)}
  .to-top{right:14px;bottom:16px}
}

/* ---------- 21. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js .reveal{opacity:1;transform:none}
  .bento-card:hover,.index-item:hover,.btn--gold:hover,.to-top:hover{transform:none}
}