/* =========================================================
   利来体育 /assets/site.css
   共享外壳：reset · 变量 · 中文排版 · 头部 · 页脚 · 基础组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

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

body{margin:0;}

img,svg,video{display:block;max-width:100%;height:auto;}

button,input,select,textarea{font:inherit;color:inherit;}

button{background:none;border:0;padding:0;cursor:pointer;}

ul,ol{margin:0;padding:0;list-style:none;}

h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0;}

a{color:inherit;}

table{width:100%;border-collapse:collapse;}

/* ---------- 2. 变量 ---------- */
:root{
  --midnight:#0B1E3A;
  --abyss:#061428;
  --panel:#12305A;
  --steel:#1E4B7A;
  --cyan:#00E5FF;
  --signal:#FF6B35;
  --ice:#E8F4FF;
  --mist:#8FA6C4;
  --judge:#00C48C;
  --whistle:#FFD166;

  --ink-80:rgba(232,244,255,.86);
  --ink-70:rgba(232,244,255,.72);
  --ink-50:rgba(232,244,255,.52);

  --rate-xl:32px;
  --rate-lg:24px;
  --rate-md:16px;
  --rate-sm:10px;
  --pill:999px;

  --shell:1280px;
  --gut:clamp(18px,4vw,40px);

  --font-sans:"Inter","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",ui-monospace,"Cascadia Mono",Menlo,Consolas,"Noto Sans Mono",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 中文排版与页面底色 ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  color:var(--ice);
  background-color:var(--midnight);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(0,229,255,.13), transparent 62%),
    radial-gradient(820px 480px at 2% 4%, rgba(255,107,53,.08), transparent 60%),
    repeating-linear-gradient(0deg, rgba(232,244,255,.032) 0 1px, transparent 1px 104px),
    repeating-linear-gradient(90deg, rgba(232,244,255,.032) 0 1px, transparent 1px 104px);
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

html.nav-open,
html.nav-open body{overflow:hidden;}

h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;line-height:1.08;}

h1{font-size:clamp(38px,6.2vw,76px);line-height:1.04;}
h2{font-size:clamp(27px,3.9vw,46px);line-height:1.1;}
h3{font-size:clamp(20px,2.3vw,27px);line-height:1.2;}
h4{font-size:clamp(17px,1.7vw,20px);line-height:1.3;}

.h-display{
  font-size:clamp(44px,8vw,96px);
  line-height:1.02;
  font-weight:800;
  letter-spacing:-.022em;
}

p{line-height:1.78;}

.lede{
  font-size:clamp(17px,1.6vw,20px);
  line-height:1.72;
  color:var(--ink-80);
  max-width:62ch;
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  font-size:1.1em;
  letter-spacing:-.01em;
  color:var(--ice);
}

.num--xl{
  display:block;
  font-size:clamp(34px,5vw,56px);
  font-weight:700;
  line-height:1;
  color:var(--cyan);
}

::selection{background:rgba(0,229,255,.32);color:#fff;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 4. 容器 ---------- */
.shell{
  width:min(100% - 2 * var(--gut), var(--shell));
  margin-inline:auto;
}

/* ---------- 5. 头部 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-70px;
  z-index:200;
  padding:12px 22px;
  border-radius:0 0 14px 14px;
  background:var(--cyan);
  color:#061428;
  font-size:15px;
  font-weight:800;
  text-decoration:none;
  transition:top 160ms var(--ease);
}

.skip-link:focus{top:0;}

.masthead{
  position:sticky;
  top:0;
  z-index:80;
  background:transparent;
  transition:background-color 120ms linear, box-shadow 120ms linear;
}

.masthead[data-solid]{
  background:rgba(6,20,40,.94);
  box-shadow:0 22px 46px -36px rgba(0,0,0,.95);
}

@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .masthead[data-solid]{
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
}

.masthead__topline{
  background:rgba(6,20,40,.62);
  border-bottom:1px solid rgba(30,75,122,.35);
}

.masthead__topline-inner{
  width:min(100% - 2 * var(--gut), var(--shell));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:36px;
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--mist);
}

.pulse{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--cyan);
  animation:pulse 2.4s var(--ease) infinite;
}

@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,229,255,.45);}
  70%{box-shadow:0 0 0 10px rgba(0,229,255,0);}
  100%{box-shadow:0 0 0 0 rgba(0,229,255,0);}
}

.topline__text{
  min-width:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.topline__tag{
  margin-left:auto;
  flex:0 0 auto;
  padding:3px 12px;
  border:1px solid rgba(0,229,255,.35);
  border-radius:var(--pill);
  background:rgba(0,229,255,.08);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  white-space:nowrap;
}

.masthead__bar{position:relative;}

.masthead__bar-inner{
  position:relative;
  width:min(100% - 2 * var(--gut), var(--shell));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.6vw,38px);
  min-height:76px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--ice);
  border-radius:14px;
}

.brand__mark{
  position:relative;
  width:38px;
  height:38px;
  flex:0 0 auto;
  border-radius:13px;
  border:1px solid var(--steel);
  background:
    linear-gradient(158deg, rgba(0,229,255,.26), rgba(0,229,255,0) 62%),
    var(--panel);
  display:grid;
  place-items:center;
}

.brand__mark::before{
  content:"";
  width:13px;
  height:13px;
  border-radius:4px;
  background:var(--cyan);
  box-shadow:0 0 16px rgba(0,229,255,.85);
}

.brand__mark::after{
  content:"";
  position:absolute;
  left:8px;
  right:8px;
  bottom:8px;
  height:1px;
  background:linear-gradient(90deg, var(--signal), transparent);
}

.brand__text{display:grid;gap:1px;}

.brand__name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  line-height:1.15;
  color:#fff;
}

.brand__sub{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
  line-height:1.2;
}

/* 导航 */
.nav{margin-left:auto;}

.nav__list{
  display:flex;
  align-items:center;
  gap:clamp(2px,1vw,8px);
}

.nav__item{position:relative;}

.nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border-radius:var(--pill);
  color:var(--ice);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color 160ms var(--ease), color 160ms var(--ease);
}

.nav__link:hover{background:rgba(0,229,255,.1);color:#fff;}

.nav__link[aria-current="page"]{
  background:rgba(0,229,255,.14);
  color:#fff;
  box-shadow:inset 0 0 0 1px rgba(0,229,255,.5);
}

.nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:3px;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transform:translateX(-50%);
}

.nav__note{display:none;}

.masthead__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:var(--pill);
  border:1px solid var(--steel);
  background:rgba(18,48,90,.62);
  color:var(--ice);
  font-size:14px;
  font-weight:700;
  transition:border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.nav-toggle:hover{border-color:rgba(0,229,255,.6);}

.nav-toggle__bars{display:grid;gap:4px;width:18px;}

.nav-toggle__bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transition:transform 160ms var(--ease), opacity 160ms var(--ease);
}

.nav-toggle[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[data-open] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 阅读进度 */
.readout{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(30,75,122,.34);
  overflow:hidden;
  opacity:0;
  transition:opacity 120ms linear;
}

.masthead[data-solid] .readout{opacity:1;}

.readout__fill{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg, var(--cyan), var(--signal));
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  transition:transform 160ms var(--ease), background-color 160ms var(--ease),
             color 160ms var(--ease), border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}

.btn--signal{
  background:var(--signal);
  color:#0B1E3A;
  box-shadow:0 12px 28px -16px rgba(255,107,53,.95);
}

.btn--signal:hover{transform:translateY(-2px);}

.btn--ghost{
  background:transparent;
  color:var(--ice);
  border-color:var(--steel);
}

.btn--ghost:hover{
  transform:translateY(-2px);
  border-color:var(--cyan);
  color:#fff;
}

.btn--quiet{
  background:rgba(0,229,255,.12);
  color:var(--cyan);
  border-color:rgba(0,229,255,.38);
}

.btn--quiet:hover{
  transform:translateY(-2px);
  background:rgba(0,229,255,.2);
  color:#fff;
}

/* ---------- 7. 页脚 ---------- */
.foot{
  position:relative;
  margin-top:clamp(64px,10vw,120px);
  color:var(--mist);
  background:
    radial-gradient(900px 320px at 10% 0%, rgba(0,229,255,.09), transparent 65%),
    linear-gradient(180deg, var(--abyss), #04101f 62%, var(--abyss));
  border-top:1px solid rgba(30,75,122,.7);
}

.foot::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(0,229,255,.55) 22%, rgba(255,107,53,.5) 62%, transparent);
}

.foot::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  opacity:.5;
  background:linear-gradient(90deg, transparent, var(--cyan), var(--signal), transparent);
}

.foot__grid,
.foot__contact,
.foot__legal{
  width:min(100% - 2 * var(--gut), var(--shell));
  margin-inline:auto;
}

.foot__grid{
  display:grid;
  grid-template-columns:minmax(240px,1.5fr) repeat(3, minmax(130px,1fr));
  gap:clamp(26px,4vw,56px);
  padding:clamp(48px,7vw,88px) 0 clamp(30px,4vw,46px);
}

.foot__brand{display:grid;gap:18px;align-content:start;justify-items:start;}

.brand--foot{color:var(--ice);}

.foot__tagline{
  max-width:30ch;
  font-size:14.5px;
  line-height:1.7;
  color:var(--mist);
}

.foot__col{display:grid;gap:14px;align-content:start;}

.foot__col-title{
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--ice);
}

.foot__list{display:grid;gap:10px;}

.foot__link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:15px;
  color:var(--mist);
  text-decoration:none;
  border-radius:6px;
  transition:color 160ms var(--ease);
}

.foot__link::before{
  content:"";
  width:6px;
  height:1px;
  background:var(--steel);
  transition:width 160ms var(--ease), background-color 160ms var(--ease);
}

.foot__link:hover{color:var(--ice);}
.foot__link:hover::before{width:14px;background:var(--cyan);}

.foot__contact{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 30px;
  padding:20px 0;
  border-top:1px solid rgba(30,75,122,.55);
  border-bottom:1px solid rgba(30,75,122,.55);
  font-size:14px;
  line-height:1.6;
}

.foot__contact-label{
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--cyan);
}

.foot__contact-item{color:var(--mist);}

.foot__contact-item .num{
  font-size:14px;
  color:var(--ice);
}

.foot__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding:20px 0 34px;
  font-size:13.5px;
}

.foot__legal-line{color:var(--ink-50);}

.foot__legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
}

/* ---------- 8. 基础组件：面包屑 / 正文 / 章节 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 18px;
  font-size:13.5px;
  color:var(--mist);
}

.crumbs li{display:inline-flex;align-items:center;gap:8px;}

.crumbs li + li::before{
  content:"/";
  color:var(--steel);
}

.crumbs a{
  color:var(--mist);
  text-decoration:none;
  border-radius:4px;
  transition:color 160ms var(--ease);
}

.crumbs a:hover{color:var(--cyan);}

.crumbs [aria-current="page"]{color:var(--ice);}

.prose{
  max-width:72ch;
  font-size:17.5px;
  line-height:1.78;
  color:var(--ink-80);
}

.prose h2{
  margin:1.9em 0 .6em;
  font-size:clamp(24px,3vw,34px);
  color:var(--ice);
}

.prose h3{
  margin:1.5em 0 .5em;
  font-size:clamp(19px,2.1vw,24px);
  color:var(--ice);
}

.prose p{margin:0 0 1.1em;}

.prose strong{color:var(--ice);font-weight:800;}

.prose ul,
.prose ol{
  list-style:disc;
  padding-left:1.3em;
  margin:0 0 1.2em;
}

.prose ol{list-style:decimal;}

.prose li{margin:0 0 .5em;}

.prose a{
  color:var(--cyan);
  text-decoration:underline;
  text-decoration-color:rgba(0,229,255,.42);
  text-underline-offset:3px;
}

.prose a:hover{text-decoration-color:var(--cyan);}

.prose blockquote{
  margin:0 0 1.3em;
  padding:16px 22px;
  border-left:3px solid var(--signal);
  border-radius:0 16px 16px 0;
  background:rgba(18,48,90,.5);
  color:var(--ice);
}

.prose code{
  padding:2px 7px;
  border-radius:6px;
  background:rgba(6,20,40,.75);
  border:1px solid rgba(30,75,122,.7);
  font-family:var(--font-mono);
  font-size:.92em;
  color:var(--cyan);
}

.section{padding:clamp(48px,7vw,96px) 0;}

.section__head{
  display:grid;
  gap:12px;
  margin-bottom:clamp(24px,3vw,42px);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--cyan);
}

.eyebrow::before{
  content:"";
  width:24px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transition:width 280ms var(--ease) 80ms;
}

html[data-js="on"] [data-reveal]:not(.is-in) .eyebrow::before{width:0;}

/* ---------- 9. 基础组件：网格与卡片 ---------- */
.grid{
  display:grid;
  gap:clamp(14px,1.6vw,22px);
}

.grid--bento{grid-template-columns:repeat(12, minmax(0,1fr));}

.col-2{grid-column:span 2;}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

.card{
  position:relative;
  overflow:hidden;
  padding:clamp(20px,2.4vw,30px);
  border:1px solid rgba(30,75,122,.75);
  border-radius:var(--rate-lg);
  background:linear-gradient(180deg, rgba(18,48,90,.92), rgba(11,30,58,.92));
  transition:transform 160ms var(--ease), border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}

.card:hover{
  transform:translateY(-2px);
  border-color:rgba(0,229,255,.62);
  box-shadow:0 24px 44px -32px rgba(0,229,255,.6);
}

.card--focus{
  border-color:rgba(0,229,255,.36);
  background:linear-gradient(155deg, var(--panel), var(--midnight) 64%);
  border-radius:var(--rate-xl);
}

.card--focus::before{
  content:"";
  position:absolute;
  right:-90px;
  top:-110px;
  width:300px;
  height:300px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(0,229,255,.22), transparent 66%);
  pointer-events:none;
}

.card--quiet{
  background:rgba(6,20,40,.62);
  border-color:rgba(30,75,122,.55);
}

.card--cut::after{
  content:"";
  position:absolute;
  right:-34px;
  top:-34px;
  width:130px;
  height:1px;
  background:var(--cyan);
  opacity:.5;
  transform:rotate(-42deg);
}

/* 胶囊与标签 */
.pill-group{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 15px;
  border-radius:var(--pill);
  border:1px solid rgba(30,75,122,.9);
  background:rgba(6,20,40,.62);
  color:var(--mist);
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  transition:color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.pill:hover{color:var(--ice);border-color:rgba(0,229,255,.6);}

.pill--time{font-family:var(--font-mono);letter-spacing:.04em;}

.pill--on,
.pill[aria-pressed="true"]{
  background:rgba(0,229,255,.14);
  border-color:var(--cyan);
  color:#fff;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:9px;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.04em;
  white-space:nowrap;
}

.tag--live{background:rgba(255,107,53,.16);color:#FF8F63;}
.tag--ok{background:rgba(0,196,140,.16);color:#3AD9AC;}
.tag--data{background:rgba(0,229,255,.14);color:var(--cyan);}
.tag--note{background:rgba(255,209,102,.16);color:var(--whistle);}

/* 统计数字 */
.stat{display:grid;gap:6px;}

.stat__num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3vw,38px);
  font-weight:700;
  line-height:1;
  color:var(--cyan);
}

.stat__label{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--mist);
}

/* 时间轴 */
.timeline{
  position:relative;
  padding-left:28px;
}

.timeline::before{
  content:"";
  position:absolute;
  left:6px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(180deg, rgba(0,229,255,.7), rgba(30,75,122,.35));
}

.timeline__item{
  position:relative;
  padding-bottom:26px;
}

.timeline__item:last-child{padding-bottom:0;}

.timeline__item::before{
  content:"";
  position:absolute;
  left:-28px;
  top:7px;
  width:11px;
  height:11px;
  border-radius:50%;
  background:var(--midnight);
  border:2px solid var(--steel);
}

.timeline__item[data-state="now"]::before{
  background:var(--cyan);
  border-color:var(--cyan);
  box-shadow:0 0 0 4px rgba(0,229,255,.18);
}

.timeline__item[data-state="next"]::before{
  background:var(--signal);
  border-color:var(--signal);
}

/* 图片容器（页面阶段放置占位或图片） */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--rate-lg);
  border:1px solid rgba(30,75,122,.7);
  background:linear-gradient(150deg, var(--panel), var(--abyss));
}

.media > img,
.media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16 / 9;
}

.media--wide > img,
.media--wide > picture > img{aspect-ratio:21 / 9;}

.media--tall > img,
.media--tall > picture > img{aspect-ratio:4 / 5;}

.media--square > img,
.media--square > picture > img{aspect-ratio:1 / 1;}

.media__cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:16px 18px 14px;
  font-size:13px;
  line-height:1.5;
  color:rgba(232,244,255,.92);
  background:linear-gradient(transparent, rgba(6,20,40,.92));
}

.media--void{
  display:grid;
  place-items:center;
  min-height:220px;
  background-image:
    repeating-linear-gradient(135deg, rgba(0,229,255,.07) 0 2px, transparent 2px 13px),
    linear-gradient(150deg, var(--panel), var(--abyss));
}

.media--void::after{
  content:attr(data-label);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--mist);
  text-align:center;
  padding:0 16px;
}

/* ---------- 10. 显现动画 ---------- */
html[data-js="on"] [data-reveal]{
  opacity:0;
  transform:translateY(14px);
}

html[data-js="on"] [data-reveal].is-in{
  opacity:1;
  transform:none;
  transition:opacity 320ms var(--ease), transform 320ms var(--ease);
}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1200px){
  .col-9{grid-column:span 12;}
}

@media (max-width:900px){
  .masthead__bar-inner{min-height:66px;gap:12px;}
  .brand__mark{width:34px;height:34px;border-radius:11px;}
  .brand__name{font-size:16.5px;}
  .brand__sub{font-size:10.5px;letter-spacing:.1em;letter-spacing:.1em;}

  .nav-toggle{display:inline-flex;}
  .masthead__cta{display:none;}

  .nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    margin-left:0;
    padding:14px var(--gut) 32px;
    max-height:calc(100dvh - 102px);
    overflow-y:auto;
    background:rgba(6,20,40,.985);
    border-top:1px solid rgba(30,75,122,.7);
    border-bottom:1px solid rgba(30,75,122,.7);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms;
  }

  .nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
  }

  .nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }

  .nav__item{width:100%;}

  .nav__link{
    width:100%;
    justify-content:space-between;
    padding:16px;
    border-radius:14px;
    font-size:17px;
    border:1px solid transparent;
  }

  .nav__link[aria-current="page"]{
    border-color:rgba(0,229,255,.45);
    box-shadow:none;
  }

  .nav__link[aria-current="page"]::after{display:none;}

  .nav__note{
    display:inline;
    font-size:11.5px;
    font-weight:500;
    letter-spacing:.14em;
    color:var(--mist);
  }

  .grid--bento{grid-template-columns:repeat(6, minmax(0,1fr));}
  .col-2,
  .col-3{grid-column:span 3;}
  .col-4,
  .col-5,
  .col-6,
  .col-7,
  .col-8,
  .col-9,
  .col-12{grid-column:span 6;}

  .foot__grid{grid-template-columns:repeat(2, minmax(0,1fr));}
  .foot__brand{grid-column:1 / -1;}
}

@media (max-width:640px){
  body{font-size:16px;}
  .masthead__topline{display:none;}
  .masthead__bar-inner{min-height:60px;}
  .brand__sub{display:none;}
  .brand__mark{width:32px;height:32px;}
  .nav{max-height:calc(100dvh - 60px);}
  .btn{padding:11px 18px;font-size:14.5px;}

  .grid--bento{grid-template-columns:minmax(0,1fr);}
  .col-2,
  .col-3,
  .col-4,
  .col-5,
  .col-6,
  .col-7,
  .col-8,
  .col-9,
  .col-12{grid-column:span 1;}

  .foot__grid{grid-template-columns:minmax(0,1fr);}
  .foot__contact{flex-direction:column;align-items:flex-start;gap:10px;}
  .foot__legal{flex-direction:column;align-items:flex-start;}
}

/* ---------- 12. 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;
  }

  .pulse{animation:none;box-shadow:0 0 0 4px rgba(0,229,255,.18);}

  html[data-js="on"] [data-reveal]{
    opacity:1;
    transform:none;
  }

  html[data-js="on"] [data-reveal]:not(.is-in) .eyebrow::before{width:24px;}
}