/* ============================================================
   搏鱼体育站 · 共享样式 /assets/site.css
   夜航声呐观测屏：深海蓝底 + 珊瑚橙节点 + 切角面板 + 等宽数字
   ============================================================ */

:root{
  /* 品牌色板 */
  --ink-deep:#0B2239;
  --ink-night:#123A5A;
  --sonar:#5B7A8C;
  --mist:#A8C0C7;
  --sand:#F2EDE4;
  --shell:#FAF7F1;
  --coral:#FF6B4A;
  --coral-soft:#FFA184;
  --moss:#6F8B6A;
  --clay:#B56A4C;
  --rock:#38434C;
  --jet:#101820;
  /* 浅底上的深珊瑚／深苔文字（保证小字号对比） */
  --coral-text:#8A3018;
  --moss-text:#3C4F37;

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-editorial:"Songti SC","Source Han Serif SC","Noto Serif CJK SC","SimSun",serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,"Courier New",monospace;

  --cut:14px;
  --shell-max:1240px;
  --gutter:clamp(18px,4vw,40px);
  --pill:999px;
  --hair:1px solid rgba(168,192,199,.28);
  --hair-dark:1px solid rgba(56,67,76,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:160ms;
  --shadow-panel:0 18px 40px rgba(11,34,57,.10);
}

/* ---------------- reset ---------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,blockquote,dl,dd,figure,h1,h2,h3,h4,p,pre{margin:0}
body{
  min-height:100vh;
  font-family:var(--font-display);
  font-size:17px;
  line-height:1.75;
  color:var(--rock);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,picture{max-width:100%}
img{height:auto}
a{color:inherit}
button{font:inherit;color:inherit}
[hidden]{display:none !important}
#main-content{scroll-margin-top:96px}

/* ---------------- 中文排版 ---------------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.16;
  color:var(--ink-deep);
}
h1{font-size:clamp(34px,4.4vw,52px)}
h2{font-size:clamp(26px,3vw,36px)}
h3{font-size:clamp(20px,2vw,24px)}
h4{font-size:18px}

.label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sonar);
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.title-editorial{
  font-family:var(--font-editorial);
  font-weight:600;
  letter-spacing:0;
}
.prose{max-width:38em;font-size:17px;line-height:1.8}
.prose > * + *{margin-top:1em}
.prose h2,.prose h3{margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.35em}
.prose ul{list-style:square}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{color:var(--ink-night);text-decoration:none;border-bottom:2px solid rgba(255,107,74,.5)}
.prose a:hover{border-bottom-color:var(--coral)}
.prose blockquote{
  border-left:3px solid var(--clay);
  padding-left:1.1em;
  color:var(--ink-night);
  font-family:var(--font-editorial);
}

.link-underline{
  position:relative;
  display:inline-block;
  padding-bottom:2px;
  color:var(--ink-night);
  font-weight:600;
  text-decoration:none;
}
.link-underline::after{
  content:"";
  position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--coral);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.link-underline:hover::after,
.link-underline:focus-visible::after{transform:scaleX(1)}
.section--night .link-underline{color:var(--sand)}

/* ---------------- 容器与章节 ---------------- */
.container{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:860px}

.section{position:relative;padding-block:clamp(48px,6.5vw,92px)}
.section--sand{background:var(--sand)}
.section--shell{background:var(--shell)}
.section--night{background:var(--ink-deep);color:rgba(242,237,228,.86)}
.section--night h1,.section--night h2,.section--night h3,.section--night h4{color:var(--sand)}

.section-head{display:grid;gap:10px;max-width:56ch;margin-bottom:clamp(24px,3vw,40px)}
.section-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--clay);
}
.section-kicker::before{content:"";width:26px;height:2px;background:currentColor}
.section--night .section-kicker{color:var(--coral-soft)}
.section-title{font-size:clamp(26px,3.2vw,38px)}
.section-lead{max-width:36em;font-size:16.5px;color:var(--rock)}
.section--night .section-lead{color:rgba(242,237,228,.78)}

/* ---------------- 装饰：刻度与声呐纹 ---------------- */
.tick-strip{
  height:14px;
  color:rgba(168,192,199,.65);
  background-image:repeating-linear-gradient(90deg,currentColor 0 1px,transparent 1px 14px);
  opacity:.85;
}
.section--night .tick-strip{color:rgba(168,192,199,.42)}

.sonar-field{position:relative;isolation:isolate}
.sonar-field::before{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background:repeating-radial-gradient(circle at 18% 12%,rgba(168,192,199,.22) 0 1px,transparent 1px 30px);
  opacity:.5;
  pointer-events:none;
}
.section--night .sonar-field::before{
  background:repeating-radial-gradient(circle at 82% 18%,rgba(255,107,74,.20) 0 1px,transparent 1px 34px);
  opacity:.6;
}

/* ---------------- 网格 ---------------- */
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split-8-4{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:clamp(18px,2.4vw,34px)}
.split-7-5{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(18px,2.4vw,34px)}

/* ---------------- 切角面板 ---------------- */
.panel{
  position:relative;
  background:var(--shell);
  border:var(--hair-dark);
  padding:clamp(20px,2.4vw,32px);
  clip-path:polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    var(--cut) 100%,
    0 calc(100% - var(--cut))
  );
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.panel--sand{background:var(--sand)}
.panel--night{
  background:var(--ink-night);
  border-color:rgba(168,192,199,.26);
  color:rgba(242,237,228,.86);
}
.panel--night h2,.panel--night h3,.panel--night h4{color:var(--sand)}
.panel--interactive:hover,
.panel--interactive:focus-within{border-color:var(--coral);background:var(--shell)}
.panel--interactive:focus-within{box-shadow:var(--shadow-panel)}
.panel-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:8px 16px;margin-bottom:14px;
}
.panel-title{font-size:clamp(18px,1.8vw,22px);letter-spacing:-.01em}
.panel-meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--sonar)}
.panel--night .panel-meta{color:var(--mist)}

/* ---------------- 按钮 ---------------- */
.btn{
  --btn-bg:var(--ink-night);
  --btn-fg:var(--sand);
  --btn-line:transparent;
  display:inline-flex;align-items:center;gap:.55em;
  padding:.72em 1.3em;
  font-family:var(--font-display);
  font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.02em;
  color:var(--btn-fg);
  background:var(--btn-bg);
  border:1px solid var(--btn-line);
  text-decoration:none;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{--btn-bg:var(--coral);--btn-fg:var(--ink-deep)}
.btn--primary:hover{--btn-bg:var(--coral-soft)}
.btn--ghost{--btn-bg:transparent;--btn-fg:var(--sand);--btn-line:rgba(168,192,199,.45)}
.btn--ghost:hover{--btn-fg:var(--coral-soft);--btn-line:var(--coral)}
.btn--sm{padding:.55em 1em;font-size:13.5px}
.btn--block{width:100%;justify-content:center}

/* ---------------- 标签 ---------------- */
.tag{
  display:inline-flex;align-items:center;gap:.45em;
  padding:.42em .7em;
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:700;line-height:1;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-night);
  background:rgba(11,34,57,.07);
  border:1px solid rgba(11,34,57,.14);
  border-radius:2px;
}
.tag--coral{color:var(--coral-text);background:rgba(255,107,74,.16);border-color:rgba(255,107,74,.42)}
.tag--moss{color:var(--moss-text);background:rgba(111,139,106,.18);border-color:rgba(111,139,106,.42)}
.tag--on-dark{color:var(--sand);background:rgba(168,192,199,.14);border-color:rgba(168,192,199,.32)}

/* ---------------- 面包屑 ---------------- */
.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.55em;list-style:none;margin:0;padding:0}
.breadcrumb-item{display:inline-flex;align-items:center;gap:.55em;color:var(--sonar)}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--mist)}
.breadcrumb-link{color:var(--ink-night);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb-link:hover{color:var(--coral);border-bottom-color:var(--coral)}
.breadcrumb-current{color:var(--rock);font-weight:700}
.breadcrumb--on-dark .breadcrumb-item{color:var(--mist)}
.breadcrumb--on-dark .breadcrumb-link{color:var(--sand)}
.breadcrumb--on-dark .breadcrumb-current{color:var(--coral-soft)}

/* ---------------- 图片容器基础规则 ---------------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  background:linear-gradient(150deg,var(--ink-night),var(--ink-deep));
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--photo{aspect-ratio:4/3}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame--sonar::before{
  content:"";
  position:absolute;inset:0;z-index:0;
  background:repeating-radial-gradient(circle at 72% 78%,rgba(168,192,199,.22) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  margin:0;
  padding:28px 16px 12px;
  font-size:12.5px;letter-spacing:.04em;
  color:rgba(242,237,228,.9);
  background:linear-gradient(180deg,rgba(11,34,57,0),rgba(11,34,57,.86));
}

/* ---------------- 数据表格 ---------------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;font-size:15px;background:var(--shell)}
.data-table caption{caption-side:bottom;padding-top:10px;font-size:12px;color:var(--sonar);text-align:left}
.data-table th{
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--sonar);text-align:left;white-space:nowrap;
  border-bottom:1px solid rgba(56,67,76,.2);
}
.data-table td{padding:11px 14px;border-bottom:1px solid rgba(56,67,76,.1);vertical-align:middle}
.data-table tbody tr{transition:background var(--dur) var(--ease)}
.data-table tbody tr:nth-child(even){background:rgba(11,34,57,.035)}
.data-table tbody tr:hover{background:rgba(255,107,74,.09)}
.data-table .cell-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600}
.data-table tr.is-key td:first-child{box-shadow:inset 3px 0 0 var(--coral);font-weight:700}

/* ---------------- 标签页 ---------------- */
.tabs{display:block}
.tabs-list{
  display:flex;flex-wrap:wrap;gap:6px;
  margin-bottom:18px;
  border-bottom:1px solid rgba(56,67,76,.18);
}
.tab{
  appearance:none;
  padding:11px 16px;
  background:transparent;
  border:1px solid transparent;
  border-bottom:0;
  border-radius:10px 10px 0 0;
  font-family:var(--font-display);
  font-size:14px;font-weight:600;line-height:1;
  color:var(--rock);
  cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.tab:hover{background:rgba(11,34,57,.06)}
.tab[aria-selected="true"]{
  background:var(--shell);
  color:var(--ink-deep);
  border-color:rgba(56,67,76,.18);
  box-shadow:inset 0 3px 0 var(--coral);
}
.tab-panel{padding-top:4px}
.tab-panel:focus-visible{outline:2px solid var(--coral);outline-offset:4px}

/* ---------------- 返回顶部 ---------------- */
.to-top{
  position:fixed;
  right:clamp(14px,2.5vw,28px);
  bottom:clamp(14px,2.5vw,28px);
  z-index:55;
  display:none;
  place-items:center;
  width:46px;height:46px;padding:0;
  color:var(--sand);
  background:rgba(18,58,90,.94);
  border:1px solid rgba(168,192,199,.45);
  border-radius:50%;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.to-top[data-visible="true"]{display:grid}
.to-top:hover{border-color:var(--coral);color:var(--coral-soft);background:var(--ink-deep)}
.to-top::before{
  content:"";
  width:11px;height:11px;
  border-left:2px solid currentColor;
  border-top:2px solid currentColor;
  transform:rotate(45deg) translate(1px,1px);
}

/* ---------------- 跳过链接 ---------------- */
.skip-link{
  position:fixed;
  left:clamp(12px,3vw,24px);
  top:-80px;
  z-index:120;
  padding:10px 18px;
  font-size:14px;font-weight:700;
  color:var(--ink-deep);
  background:var(--coral);
  border-radius:0 0 12px 12px;
  text-decoration:none;
  transition:top 140ms var(--ease);
}
.skip-link:focus{top:0}

/* ============================================================
   头部：悬浮胶囊浮岛
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  padding-block:14px;
  background:var(--ink-deep);
  border-bottom:1px solid rgba(168,192,199,.18);
  transition:padding var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled="true"]{
  padding-block:8px;
  box-shadow:0 14px 34px rgba(11,34,57,.35);
}
.header-shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.nav-capsule{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
  padding:9px 10px 9px 16px;
  background:rgba(18,58,90,.78);
  border:1px solid rgba(168,192,199,.26);
  border-radius:var(--pill);
  backdrop-filter:blur(10px);
}

/* 品牌 */
.brand{display:flex;align-items:center;gap:11px;flex:none;color:var(--sand);text-decoration:none}
.brand-sonar{
  position:relative;
  display:grid;place-items:center;
  width:34px;height:34px;flex:none;
  border-radius:50%;
  border:1px solid rgba(255,107,74,.55);
  background:radial-gradient(circle at 50% 50%,rgba(255,107,74,.28),rgba(255,107,74,0) 72%);
}
.brand-sonar::before{
  content:"";
  position:absolute;inset:5px;
  border-radius:50%;
  border:1px solid rgba(168,192,199,.42);
}
.brand-sonar::after{
  content:"";
  position:absolute;right:-3px;top:-3px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--coral);
  box-shadow:0 0 0 2px var(--ink-deep);
}
.brand-sonar i{width:8px;height:8px;border-radius:50%;background:var(--coral-soft);display:block}
.brand-text{display:block}
.brand-name{display:block;font-size:16.5px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-descriptor{display:block;font-size:10.5px;letter-spacing:.14em;line-height:1.4;color:var(--mist)}

/* 导航 */
.primary-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-item{flex:0 0 auto}
.nav-link{
  display:inline-block;
  padding:8px 12px;
  border-radius:var(--pill);
  font-size:14px;font-weight:600;
  color:var(--mist);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:var(--sand);background:rgba(168,192,199,.14)}
.nav-link:focus-visible{outline:2px solid var(--coral);outline-offset:2px}
.nav-link[aria-current="page"]{color:var(--ink-deep);background:var(--sand)}

.nav-cta{display:none;gap:8px}
.header-actions{display:flex;align-items:center;gap:8px;flex:none}

/* 汉堡 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:8px 13px;
  color:var(--sand);
  background:transparent;
  border:1px solid rgba(168,192,199,.4);
  border-radius:var(--pill);
  font-family:var(--font-display);
  font-size:12.5px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--coral);color:var(--coral-soft)}
.nav-toggle-bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-bars > span{display:block;height:2px;width:100%;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle-label{font-size:12.5px;letter-spacing:.12em}
.site-header[data-open="true"] .nav-toggle-bars > span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars > span:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-bars > span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 滚动进度 */
.scroll-meter{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.scroll-meter__fill{
  display:block;
  height:100%;
  width:var(--scroll-progress,0%);
  background:linear-gradient(90deg,var(--coral),var(--coral-soft));
  transition:width 120ms linear;
}

/* ============================================================
   页脚：观测屏台账
   ============================================================ */
.site-footer{position:relative;background:var(--ink-deep);color:rgba(242,237,228,.82)}
.footer-ruler{
  height:14px;
  background-image:repeating-linear-gradient(90deg,rgba(168,192,199,.5) 0 1px,transparent 1px 16px);
  opacity:.55;
}
.footer-top{padding-block:clamp(40px,5vw,68px)}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,.85fr)) minmax(0,1.5fr);
  gap:clamp(22px,3vw,44px);
}
.footer-brand{min-width:0}
.footer-emblem{
  position:relative;
  display:block;
  width:46px;height:46px;
  margin-bottom:16px;
  border-radius:50%;
  border:1px solid rgba(255,107,74,.6);
  background:radial-gradient(circle at 50% 50%,rgba(255,107,74,.32),rgba(255,107,74,0) 72%);
}
.footer-emblem::before{content:"";position:absolute;inset:8px;border-radius:50%;border:1px solid rgba(168,192,199,.45)}
.footer-emblem::after{
  content:"";
  position:absolute;left:50%;top:50%;
  width:8px;height:8px;
  transform:translate(-50%,-50%);
  border-radius:50%;
  background:var(--coral);
}
.footer-brandname{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--sand)}
.footer-tagline{
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--coral-soft);
}
.footer-blurb{margin-top:14px;max-width:30ch;font-size:14px;line-height:1.7;color:rgba(242,237,228,.68)}

.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--mist);
}
.footer-links{display:grid;gap:10px;list-style:none;margin:0;padding:0}
.footer-link{
  display:inline-block;
  font-size:15px;
  color:var(--sand);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--coral-soft);border-bottom-color:rgba(255,161,132,.7)}

.footer-contact{min-width:0}
.contact-list{display:grid;gap:12px;list-style:none;margin:0;padding:0}
.contact-item{display:grid;gap:2px}
.contact-key{
  font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--sonar);
}
.contact-value{font-size:14px;line-height:1.6;color:var(--sand);overflow-wrap:anywhere}
.contact-value--mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.02em}
.footer-note{
  margin-top:14px;
  padding-left:12px;
  border-left:2px solid var(--clay);
  font-size:12.5px;line-height:1.65;
  color:rgba(242,237,228,.62);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  padding-block:18px 26px;
  border-top:1px solid rgba(168,192,199,.2);
}
.footer-copy{margin:0;font-size:12.5px;color:var(--sonar)}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 18px;list-style:none;margin:0;padding:0}
.legal-link{font-size:12.5px;color:var(--mist);text-decoration:none;transition:color var(--dur) var(--ease)}
.legal-link:hover{color:var(--coral-soft)}
.footer-icp{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--sonar)}

/* ============================================================
   焦点与动效偏好
   ============================================================ */
:where(a,button,[tabindex],summary):focus-visible{
  outline:2px solid var(--coral);
  outline-offset:3px;
  border-radius:4px;
}
.btn:focus-visible{outline:2px solid var(--coral-soft);outline-offset:3px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1120px){
  .header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    display:none;
    margin:0;
    padding:14px;
    max-height:calc(100vh - 130px);
    overflow-y:auto;
    background:var(--ink-night);
    border:1px solid rgba(168,192,199,.3);
    border-radius:20px;
    box-shadow:0 26px 54px rgba(6,18,31,.5);
    z-index:5;
  }
  .site-header[data-open="true"] .primary-nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{display:block;padding:12px 14px;border-radius:12px;font-size:15.5px}
  .nav-cta{
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
    margin-top:10px;
    padding-top:12px;
    border-top:1px solid rgba(168,192,199,.22);
  }
  .nav-cta .btn{justify-content:center}
}

@media (max-width:1000px){
  .split-8-4,.split-7-5{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:920px){
  .cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:620px){
  body{font-size:16px}
  .cols-2,.cols-3,.cols-4{grid-template-columns:minmax(0,1fr)}
  .brand-descriptor{display:none}
  .section{padding-block:clamp(38px,9vw,60px)}
}

@media (max-width:600px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-legal{justify-content:flex-start}
}