/* ============================================================
   财神棋牌老版本 · 规则档案  共享样式  /assets/site.css
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --paper:#F3E7CE;
  --card:#FBF6EA;
  --green:#123A32;
  --green-deep:#0D2C26;
  --ink:#0E1512;
  --red:#B3272D;
  --red-deep:#7A1B1E;
  --gold:#D9A441;
  --gold-hi:#F2D07A;
  --cyan:#3FD6C8;
  --slate:#2A4A46;

  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Roboto Mono","DIN Alternate",ui-monospace,SFMono-Regular,monospace;
  --font-body:"Noto Serif SC","Source Han Serif SC","Songti SC","PingFang SC",serif;

  --ease:cubic-bezier(0.2,0.7,0.2,1);
  --shell:1320px;
  --cut:20px;

  --shadow-card:0 1px 0 rgba(14,21,18,.18), 0 14px 26px -22px rgba(14,21,18,.6);
  --shadow-lift:0 3px 0 rgba(14,21,18,.2), 0 20px 34px -24px rgba(14,21,18,.75);
  --focus-ring:0 0 0 2px var(--paper), 0 0 0 4px var(--gold-hi);
}

/* ---------- 2. Reset 与全局纹理 ---------- */
*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background-color:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  overflow-x:hidden;
}

/* 纸张噪点 + CRT 扫描线（全站底层纹理，强度 < 6%） */
body::before,
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:40;
}
body::before{
  background-image:repeating-linear-gradient(to bottom, rgba(14,21,18,.055) 0 1px, rgba(14,21,18,0) 1px 4px);
  opacity:.75;
}
body::after{
  background-image:radial-gradient(rgba(14,21,18,.16) 0.5px, transparent 0.6px);
  background-size:3px 3px;
  opacity:.32;
}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
  margin:0 0 .62em;
}
h1{font-size:clamp(34px,4.4vw,56px);letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.8vw,34px);}
h3{font-size:clamp(19px,2vw,22px);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.25em;}
a{color:var(--red-deep);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;border:0;}
table{border-collapse:collapse;}

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

/* ---------- 3. 布局基元 ---------- */
.shell{
  width:min(var(--shell),100% - 40px);
  margin-inline:auto;
}
.section{padding:56px 0;}
.section--tight{padding:32px 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px 24px;
  padding-bottom:12px;
  margin-bottom:26px;
  border-bottom:2px solid var(--ink);
}
.section-head h2{margin:0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 6px;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--red);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red);flex:none;}
.lede{
  font-size:18px;
  line-height:1.8;
  color:var(--slate);
  max-width:62ch;
  margin:0;
}
.prose{max-width:64ch;font-size:17px;line-height:1.85;}
.prose h2{margin-top:2.2em;}
.prose h3{margin-top:1.8em;}
.prose li{margin-bottom:.5em;}
.prose blockquote{
  margin:1.6em 0;
  padding:14px 20px;
  border-left:4px solid var(--red);
  background:rgba(179,39,45,.06);
  color:var(--slate);
  font-size:16px;
}
.grid-2{display:grid;gap:20px;grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- 4. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:-9999px;
  z-index:200;
  padding:12px 20px;
  background:var(--red);
  color:var(--gold-hi);
  border:2px solid var(--gold-hi);
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  text-decoration:none;
}
.skip-link:focus{left:12px;top:12px;text-decoration:none;}

/* ---------- 5. 页头（框架式导航） ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,#17483D 0%,var(--green) 58%,var(--green-deep) 100%);
  color:var(--paper);
  border-bottom:2px solid var(--gold);
  box-shadow:0 16px 30px -26px rgba(14,21,18,1);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:5px 5px 0;
  border:1px solid rgba(217,164,65,.32);
  border-bottom:0;
  border-radius:10px 10px 0 0;
  pointer-events:none;
}
.header-inner{
  position:relative;
  z-index:1;
  width:min(var(--shell),100% - 40px);
  margin:0 auto;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:12px 24px;
  padding:14px 0 12px;
  transition:padding .24s var(--ease);
}
.site-header.is-condensed .header-inner{padding:8px 0 6px;}
.site-header.is-condensed .header-meta{display:none;}

.brand-link{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:inherit;
  text-decoration:none;
  min-width:0;
}
.brand-link:hover{text-decoration:none;}
.brand-mark{
  flex:none;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  background:var(--red);
  color:var(--gold-hi);
  font-family:var(--font-head);
  font-weight:900;
  font-size:23px;
  line-height:1;
  border:2px solid var(--gold);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:transform .18s var(--ease);
}
.brand-link:hover .brand-mark{transform:translateY(-2px);}
.brand-text{display:block;min-width:0;}
.brand-name{
  display:block;
  font-family:var(--font-head);
  font-weight:900;
  font-size:18px;
  line-height:1.2;
  letter-spacing:.4px;
  color:var(--card);
}
.brand-sub{
  display:block;
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(243,231,206,.66);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  transition:opacity .2s var(--ease);
}
.site-header.is-condensed .brand-sub{opacity:0;}

.header-meta{
  justify-self:center;
  margin:0;
  padding-left:14px;
  border-left:2px solid rgba(217,164,65,.6);
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(243,231,206,.7);
  white-space:nowrap;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:2px solid transparent;
  border-radius:3px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-primary{
  background:var(--red);
  color:var(--gold-hi);
  border-color:var(--gold);
  box-shadow:0 3px 0 var(--red-deep);
}
.btn-primary:hover{background:#C42F35;box-shadow:0 5px 0 var(--red-deep);}
.btn-ghost{
  background:transparent;
  color:var(--paper);
  border-color:rgba(217,164,65,.7);
}
.btn-ghost:hover{background:rgba(217,164,65,.14);color:var(--gold-hi);}

/* 移动端开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  background:transparent;
  color:var(--card);
  border:2px solid rgba(217,164,65,.7);
  border-radius:3px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:14px;
  cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(217,164,65,.16);border-color:var(--gold-hi);}
.toggle-bars{display:grid;gap:4px;}
.toggle-bar{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.toggle-label{white-space:nowrap;}

/* 导航行 */
.header-nav-row{
  position:relative;
  z-index:1;
  width:min(var(--shell),100% - 40px);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:6px 0 10px;
  border-top:1px dashed rgba(217,164,65,.42);
}
.site-nav{display:block;}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  gap:4px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-item{display:block;}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 13px;
  border:1px solid transparent;
  border-radius:3px;
  font-family:var(--font-head);
  font-weight:700;
  font-size:15px;
  line-height:1.2;
  color:rgba(243,231,206,.84);
  text-decoration:none;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-link:hover{
  color:var(--card);
  background:rgba(63,214,200,.14);
  transform:translateY(-2px);
  text-decoration:none;
}
.nav-link[aria-current="page"]{
  color:var(--card);
  background:var(--red);
  border-color:var(--gold);
  box-shadow:0 2px 0 var(--red-deep);
}
.nav-link[aria-current="page"]::before{
  content:"";
  flex:none;
  width:6px;
  height:6px;
  background:var(--gold-hi);
  transform:rotate(45deg);
}

/* 年份刻度母题 */
.year-scale{
  display:flex;
  align-items:center;
  gap:0;
  flex:none;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.05em;
  color:rgba(243,231,206,.55);
}
.year-scale-label{
  margin-right:8px;
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold);
}
.year-scale-item{
  position:relative;
  padding:0 2px 0 13px;
  transition:color .18s var(--ease);
}
.year-scale-item::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:1px;
  height:12px;
  margin-top:-6px;
  background:var(--gold);
  opacity:.5;
}
.year-scale-item.is-current{color:var(--gold-hi);font-weight:700;}
.year-scale-item.is-current::before{width:2px;height:16px;margin-top:-8px;opacity:1;}

/* 阅读进度 */
.progress-rail{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:rgba(14,21,18,.4);
  overflow:hidden;
}
.progress-fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--red),var(--gold) 62%,var(--gold-hi));
  transition:width .1s linear;
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background:linear-gradient(180deg,var(--green) 0%,var(--green-deep) 100%);
  color:rgba(243,231,206,.82);
  border-top:3px solid var(--gold);
}
.site-footer::before{
  content:"";
  display:block;
  height:9px;
  background:repeating-linear-gradient(135deg,var(--red) 0 10px,var(--red-deep) 10px 20px);
}
.footer-inner{
  width:min(var(--shell),100% - 40px);
  margin:0 auto;
  padding:52px 0 26px;
  display:grid;
  grid-template-columns:minmax(240px,1.1fr) minmax(0,2.4fr);
  gap:44px 56px;
}
.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:14px;
}
.footer-brand .brand-name{font-size:19px;}
.footer-tagline{
  margin:0;
  max-width:34ch;
  font-size:14px;
  line-height:1.8;
  color:rgba(243,231,206,.68);
}
.footer-address{
  margin:0;
  font-size:13.5px;
  line-height:1.7;
  color:rgba(243,231,206,.6);
}
.footer-scale{
  display:flex;
  flex-wrap:wrap;
  gap:2px;
  width:100%;
  padding-top:12px;
  border-top:1px dashed rgba(217,164,65,.35);
  font-family:var(--font-num);
  font-size:12px;
  color:rgba(243,231,206,.5);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:28px 24px;
}
.footer-col{min-width:0;}
.footer-title{
  margin:0 0 14px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(217,164,65,.35);
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  letter-spacing:.06em;
  color:var(--gold);
}
.footer-list{
  display:grid;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-link{
  font-size:14.5px;
  line-height:1.55;
  color:rgba(243,231,206,.8);
  border-bottom:1px solid transparent;
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--cyan);text-decoration:none;}
.footer-contact{
  display:block;
  font-family:var(--font-num);
  font-size:13px;
  line-height:1.7;
  color:rgba(243,231,206,.72);
  word-break:break-all;
}
.footer-bottom{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  padding-top:22px;
  border-top:1px dashed rgba(217,164,65,.4);
  font-size:13px;
  color:rgba(243,231,206,.62);
}
.footer-legal{
  margin:0;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--gold);
}
.footer-copy{
  margin:0;
  font-family:var(--font-num);
  font-size:12.5px;
}
.footer-note{
  flex:1 1 320px;
  min-width:240px;
  margin:0;
  line-height:1.7;
}

/* ---------- 7. 通用内容组件 ---------- */
.crumb{margin:0 0 20px;}
.crumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-num);
  font-size:13.5px;
}
.crumb-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--slate);
}
.crumb-item + .crumb-item::before{
  content:"/";
  color:var(--gold);
}
.crumb-link{color:var(--slate);text-decoration:none;}
.crumb-link:hover{color:var(--red);text-decoration:underline;}

.card{
  position:relative;
  padding:20px 22px 24px;
  background:var(--card);
  border:1px solid rgba(14,21,18,.22);
  border-radius:4px;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card::after{
  content:"";
  position:absolute;
  right:-1px;
  bottom:-1px;
  width:20px;
  height:20px;
  background:var(--red);
  clip-path:polygon(100% 0,100% 100%,0 100%);
  border-bottom-right-radius:4px;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);}
.card-index{
  display:inline-block;
  margin-bottom:10px;
  padding:2px 8px;
  border:1px solid rgba(179,39,45,.35);
  border-radius:2px;
  background:rgba(179,39,45,.1);
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--red);
}
.card-title{
  margin:0 0 8px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:19px;
  line-height:1.35;
}
.card-text{
  margin:0 0 10px;
  font-size:15.5px;
  line-height:1.75;
  color:var(--slate);
}
.card-meta{
  margin:0;
  font-family:var(--font-num);
  font-size:13.5px;
  color:var(--slate);
}

.scoreboard{
  display:grid;
  gap:6px;
  padding:20px 18px;
  background:var(--green);
  color:var(--card);
  border:2px solid var(--gold);
  border-radius:4px;
  text-align:center;
}
.scoreboard-value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(44px,7vw,80px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--gold-hi);
}
.scoreboard-label{
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.1em;
  color:rgba(243,231,206,.82);
}
.scoreboard-unit{font-size:.4em;margin-left:6px;color:rgba(243,231,206,.7);}

.seal{
  flex:none;
  display:inline-grid;
  place-items:center;
  width:58px;
  height:58px;
  padding:4px;
  border:2px solid var(--red);
  border-radius:50%;
  background:rgba(179,39,45,.05);
  color:var(--red);
  font-family:var(--font-head);
  font-weight:900;
  font-size:12.5px;
  line-height:1.15;
  text-align:center;
  letter-spacing:.02em;
  transform:rotate(-7deg);
  box-shadow:inset 0 0 0 3px var(--paper),inset 0 0 0 4px rgba(179,39,45,.6);
}
.seal--sm{width:44px;height:44px;font-size:11px;}
.seal--cyan{
  border-color:var(--cyan);
  color:var(--slate);
  background:rgba(63,214,200,.08);
  box-shadow:inset 0 0 0 3px var(--paper),inset 0 0 0 4px rgba(63,214,200,.6);
}

.chip-group{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  background:var(--card);
  border:1px solid rgba(14,21,18,.28);
  border-radius:999px;
  font-family:var(--font-head);
  font-weight:700;
  font-size:13.5px;
  line-height:1.4;
  color:var(--slate);
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{transform:translateY(-2px);border-color:var(--red);color:var(--red);}
.chip[aria-pressed="true"],
.chip.is-active{
  background:var(--green);
  color:var(--gold-hi);
  border-color:var(--gold);
}

.panel{
  background:var(--card);
  border:1px solid rgba(14,21,18,.22);
  border-radius:4px;
  overflow:hidden;
}
.panel + .panel{margin-top:10px;}
.panel-head{margin:0;}
.panel-trigger{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:15px 18px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-family:var(--font-head);
  font-weight:800;
  font-size:16px;
  line-height:1.5;
  color:var(--ink);
  transition:background-color .18s var(--ease);
}
.panel-trigger:hover{background:rgba(217,164,65,.16);}
.panel-trigger::after{
  content:"";
  flex:none;
  width:9px;
  height:9px;
  border-right:2px solid var(--red);
  border-bottom:2px solid var(--red);
  transform:rotate(45deg) translate(-2px,-2px);
  transition:transform .22s var(--ease);
}
.panel-trigger[aria-expanded="true"]::after{transform:rotate(225deg) translate(-2px,-2px);}
.panel-body{
  padding:0 18px 16px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--slate);
}
.panel-body[hidden]{display:none;}

.table-wrap{
  overflow-x:auto;
  background:var(--card);
  border:1px solid rgba(14,21,18,.22);
  border-radius:4px;
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
.data-table th{
  padding:12px 14px;
  background:var(--green);
  color:var(--gold-hi);
  font-family:var(--font-head);
  font-weight:700;
  font-size:14px;
  letter-spacing:.04em;
  text-align:left;
  white-space:nowrap;
}
.data-table td{
  padding:11px 14px;
  border-top:1px solid rgba(14,21,18,.12);
  vertical-align:top;
}
.data-table tbody tr:nth-child(even){background:rgba(18,58,50,.05);}
.data-table .num,
.data-table [data-num]{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
}

/* 图片容器基础规则（页面阶段放入占位或实拍图） */
.media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border:1px solid rgba(14,21,18,.3);
  border-radius:4px;
  background:
    linear-gradient(135deg,rgba(18,58,50,.94),rgba(122,27,30,.86)),
    repeating-linear-gradient(45deg,rgba(217,164,65,.14) 0 10px,rgba(217,164,65,0) 10px 20px);
}
.media:empty::after{
  content:"图像占位";
  position:absolute;
  left:12px;
  bottom:10px;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.18em;
  color:rgba(243,231,206,.78);
}
.media > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--wide{aspect-ratio:16/9;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}
.media--band{aspect-ratio:21/9;}
.media-caption{
  margin:8px 0 0;
  font-size:13px;
  line-height:1.7;
  color:var(--slate);
}

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

/* ---------- 8. 滚动显现 ---------- */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
html.js-reveal [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1180px){
  .header-meta{font-size:12.5px;}
  .footer-inner{grid-template-columns:minmax(220px,1fr) minmax(0,2fr);gap:40px 36px;}
}

@media (max-width:1024px){
  .header-meta{display:none;}
  .footer-inner{grid-template-columns:1fr;gap:36px;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:900px){
  .header-inner{padding:12px 0 10px;}
  .nav-toggle{display:inline-flex;}
  .header-nav-row{
    display:block;
    padding:0;
    border-top:1px dashed rgba(217,164,65,.42);
  }
  .site-nav{
    max-height:0;
    overflow:hidden;
    padding:0;
    transition:max-height .32s var(--ease),padding .24s var(--ease);
  }
  .site-nav[data-open]{
    max-height:74vh;
    overflow-y:auto;
    padding:6px 0 4px;
  }
  .nav-list{flex-direction:column;gap:0;}
  .nav-link{
    display:flex;
    width:100%;
    padding:13px 14px;
    border-radius:0;
    border-bottom:1px solid rgba(217,164,65,.18);
  }
  .nav-link:hover{transform:none;}
  .nav-link[aria-current="page"]{box-shadow:none;}
  .year-scale{
    justify-content:flex-start;
    padding:8px 0 10px;
    overflow-x:auto;
  }
  .section{padding:40px 0;}
  .site-footer{margin-top:64px;}
}

@media (max-width:640px){
  .shell,
  .header-inner,
  .header-nav-row,
  .footer-inner{width:min(var(--shell),100% - 24px);}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .section-head{align-items:flex-start;}
  .scoreboard{padding:16px 14px;}
}

@media (max-width:520px){
  .brand-sub{display:none;}
  .brand-name{font-size:16px;}
  .brand-mark{width:38px;height:38px;font-size:20px;}
  .btn{padding:9px 14px;font-size:14px;}
  .nav-toggle{padding:8px 10px;}
  .toggle-label{display:none;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-inner{padding:40px 0 22px;}
}

/* ---------- 10. 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  body::before,
  body::after{display:none;}
  html.js-reveal [data-reveal]{opacity:1;transform:none;}
  .btn:hover,
  .card:hover,
  .nav-link:hover,
  .chip:hover,
  .brand-link:hover .brand-mark{transform:none;}
}