/* ============================================================
   意昂体育 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

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

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

body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:clamp(16px,0.5vw + 14.4px,18px);
  font-weight:400;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul,ol{ margin:0; padding:0; list-style:none; }
p{ margin:0; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
table{ border-collapse:collapse; width:100%; }
[hidden]{ display:none !important; }

:where(a,button,summary,input,select,textarea,[tabindex]):focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:3px;
  border-radius:10px;
}

/* ---------- 2. 变量 ---------- */
:root{
  --green:#0B3D2E;
  --green-deep:#06261C;
  --green-soft:#1F6B4F;
  --orange:#FF6B35;
  --orange-soft:#FFB599;
  --cyan:#00C2A8;
  --gray:#E9ECEF;
  --white:#FFFFFF;
  --ink:#212529;
  --muted:#6C757D;

  --line:rgba(11,61,46,.13);
  --line-invert:rgba(255,255,255,.14);
  --surface-muted:#F3F6F5;

  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:28px;
  --radius-pill:999px;

  --shell:1280px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:64px;

  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --shadow-soft:0 24px 48px -32px rgba(6,38,28,.55);
  --shadow-lift:0 32px 64px -36px rgba(6,38,28,.75);
  --ease:cubic-bezier(.2,.75,.3,1);
}

@media (min-width:960px){
  :root{ --header-h:118px; }
}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,h4{
  margin:0;
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.015em;
  color:var(--green);
}
h1{ font-size:clamp(34px,5.4vw,72px); }
h2{ font-size:clamp(26px,3.4vw,42px); }
h3{ font-size:clamp(19px,1.6vw,24px); }
h4{ font-size:clamp(16px,1.2vw,18px); letter-spacing:.02em; }

.lead{
  font-size:clamp(16px,1.2vw,19px);
  line-height:1.8;
  color:var(--muted);
  max-width:64ch;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--orange);
}

.num,
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

.text-accent{ color:var(--orange); }
.text-muted{ color:var(--muted); }

.visually-hidden{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

[id]{ scroll-margin-top:calc(var(--header-h) + 16px); }

/* ---------- 4. 通用布局 ---------- */
.shell{
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
}
.shell--narrow{ --shell:980px; }

.section{ padding-block:clamp(48px,7vw,96px); }
.section--tint{ background:var(--surface-muted); }
.section--dark{
  background:
    radial-gradient(90% 130% at 100% 0%,rgba(0,194,168,.14),transparent 58%),
    linear-gradient(180deg,#0B3D2E 0%,#06261C 100%);
  color:rgba(255,255,255,.84);
}
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4{ color:#fff; }
.section--dark .lead{ color:rgba(255,255,255,.72); }

.section-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:end;
  gap:6px 20px;
  margin-bottom:clamp(24px,4vw,44px);
}
.section-index{
  font-family:var(--font-mono);
  font-size:clamp(30px,4.2vw,54px);
  font-weight:700;
  line-height:.86;
  letter-spacing:-.04em;
  color:var(--green);
  opacity:.16;
}
.section--dark .section-index{ color:var(--cyan); opacity:.42; }
.section-head-body{ min-width:0; }
.section-kicker{
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--orange);
}
.section-title{ font-size:clamp(26px,3.4vw,42px); }
.section-lead{
  margin-top:10px;
  max-width:62ch;
  font-size:clamp(15px,1.1vw,17px);
  color:var(--muted);
}
.section--dark .section-lead{ color:rgba(255,255,255,.7); }

.layout-rail{
  display:grid;
  grid-template-columns:1fr;
  align-items:start;
  gap:clamp(24px,4vw,48px);
}
@media (min-width:1000px){
  .layout-rail{ grid-template-columns:222px minmax(0,1fr); }
}

.split{
  display:grid;
  grid-template-columns:1fr;
  align-items:center;
  gap:clamp(28px,5vw,64px);
}
@media (min-width:900px){
  .split{ grid-template-columns:minmax(0,1fr) minmax(0,1fr); }
  .split--wide-left{ grid-template-columns:1.15fr .85fr; }
}

.grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(16px,2vw,26px);
}
@media (min-width:680px){
  .grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:860px){
  .grid--3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:1100px){
  .grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
}

.stack{ display:grid; gap:12px; }
.stack--lg{ gap:clamp(18px,2.4vw,30px); }
.cluster{ display:flex; flex-wrap:wrap; align-items:center; gap:10px; }

/* ---------- 5. 左侧数据轨道 ---------- */
.rail{
  position:sticky;
  top:calc(var(--header-h) + 20px);
  align-self:start;
  padding:22px 16px;
  border-radius:var(--radius-lg);
  background:
    radial-gradient(120% 60% at 100% 0%,rgba(0,194,168,.16),transparent 62%),
    linear-gradient(180deg,#0B3D2E 0%,#06261C 100%);
  color:#fff;
  box-shadow:var(--shadow-soft);
}
.rail-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.32em;
  color:var(--orange);
}
.rail-list{ display:grid; gap:3px; }
.rail-link{
  display:flex;
  align-items:baseline;
  gap:12px;
  width:100%;
  padding:10px 12px;
  border-left:2px solid transparent;
  border-radius:var(--radius-sm);
  color:rgba(255,255,255,.7);
  font-size:14.5px;
  text-align:left;
  transition:color .22s ease,background-color .22s ease,border-color .22s ease;
}
.rail-link::before{
  content:attr(data-step);
  font-family:var(--font-mono);
  font-size:10.5px;
  color:rgba(255,255,255,.42);
}
.rail-link:hover{ color:#fff; background:rgba(255,255,255,.08); }
.rail-link.is-active{
  color:#fff;
  background:rgba(255,255,255,.1);
  border-left-color:var(--orange);
}
.rail-link.is-active::before{ color:var(--orange); }
.rail-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line-invert);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.85;
  color:rgba(255,255,255,.5);
}
@media (max-width:999px){
  .rail{ position:static; }
}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  color:#fff;
  background:
    radial-gradient(90% 180% at 8% -60%,rgba(31,107,79,.85),transparent 62%),
    radial-gradient(70% 150% at 96% -30%,rgba(0,194,168,.18),transparent 60%),
    linear-gradient(180deg,#0B3D2E 0%,#06261C 100%);
  border-bottom:1px solid rgba(255,255,255,.09);
  transition:box-shadow .3s ease;
}
.site-header.is-stuck{
  box-shadow:0 26px 46px -34px rgba(6,38,28,.95);
}

.skip-link{
  position:absolute;
  left:50%;
  top:8px;
  z-index:200;
  padding:10px 22px;
  border-radius:var(--radius-pill);
  background:var(--orange);
  color:#fff;
  font-size:14px;
  font-weight:700;
  transform:translate(-50%,-170%);
  transition:transform .25s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{ transform:translate(-50%,0); }

.header-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:12px;
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  padding-block:clamp(10px,1.6vw,16px);
}
.header-left{
  display:flex;
  align-items:center;
  min-width:0;
}
.header-right{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:12px;
  min-width:0;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:6px 12px;
  border-radius:var(--radius-md);
  justify-self:center;
  transition:background-color .25s ease;
}
.brand:hover{ background:rgba(255,255,255,.07); }
.brand-glyph{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  flex:0 0 auto;
  border-radius:13px;
  background:linear-gradient(150deg,#FF6B35,#FF8A5B);
  color:#08281E;
  box-shadow:0 12px 22px -14px rgba(255,107,53,.9);
}
.brand-glyph svg{ width:22px; height:22px; }
.brand-words{ display:block; text-align:center; }
.brand-name{
  display:block;
  font-size:clamp(19px,1.9vw,25px);
  font-weight:800;
  letter-spacing:.14em;
  line-height:1.15;
  white-space:nowrap;
}
.brand-latin{
  display:block;
  margin-top:5px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.36em;
  color:rgba(255,255,255,.5);
  white-space:nowrap;
}

.season-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.86);
  white-space:nowrap;
}
.season-dot{
  display:block;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--cyan);
  animation:pulse-dot 2.6s var(--ease) infinite;
}
.season-short{ display:none; }
@keyframes pulse-dot{
  0%,100%{ box-shadow:0 0 0 4px rgba(0,194,168,.2); }
  50%{ box-shadow:0 0 0 8px rgba(0,194,168,.05); }
}

.nav-toggle{
  display:none;
  place-items:center;
  width:42px;
  height:42px;
  border-radius:13px;
  border:1px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.06);
  color:#fff;
  transition:background-color .25s ease,border-color .25s ease;
}
.nav-toggle:hover{ background:rgba(255,255,255,.15); border-color:rgba(255,255,255,.45); }
.nav-toggle-bars{ display:grid; gap:4px; width:18px; }
.nav-toggle-bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .3s var(--ease),opacity .3s ease;
}

.site-nav{
  position:relative;
  z-index:70;
  border-top:1px solid rgba(255,255,255,.1);
}
.nav-head,
.nav-close,
.nav-tail{ display:none; }
.nav-list{
  counter-reset:nav;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:4px;
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  padding-block:9px 13px;
}
.nav-list > li{ counter-increment:nav; }
.nav-list a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.8);
  transition:color .22s ease,background-color .22s ease;
}
.nav-list a::before{
  content:"0" counter(nav);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--orange);
}
.nav-list a:hover{
  color:#fff;
  background:rgba(255,255,255,.1);
}
.nav-list a[aria-current="page"]{
  color:#fff;
  background:var(--orange);
}
.nav-list a[aria-current="page"]::before{ color:#fff; opacity:.8; }

.nav-scrim{ display:none; }

@media (max-width:959px){
  .nav-toggle{ display:grid; }
  .brand{ gap:10px; padding:4px 6px; }
  .brand-latin{ display:none; }
  .brand-glyph{ width:34px; height:34px; border-radius:11px; }
  .brand-glyph svg{ width:19px; height:19px; }
  .btn--entry{ display:none; }
  .season-long{ display:none; }
  .season-short{ display:inline; }
  .season-badge{ padding:6px 11px; font-size:11.5px; }

  .site-nav{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    z-index:120;
    display:flex;
    flex-direction:column;
    width:min(330px,86vw);
    padding:20px 18px 26px;
    overflow-y:auto;
    overscroll-behavior:contain;
    background:
      radial-gradient(120% 60% at 100% 0%,rgba(0,194,168,.16),transparent 62%),
      linear-gradient(180deg,#06261C 0%,#0B3D2E 100%);
    border-top:0;
    border-right:1px solid rgba(255,255,255,.08);
    transform:translateX(-104%);
    visibility:hidden;
    transition:transform .44s var(--ease),visibility .44s var(--ease);
  }
  .site-nav[data-open]{
    transform:none;
    visibility:visible;
  }
  .nav-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding-bottom:16px;
    border-bottom:1px solid var(--line-invert);
  }
  .nav-head-title{
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.34em;
    color:var(--orange);
  }
  .nav-close{
    display:grid;
    place-items:center;
    width:36px;
    height:36px;
    border-radius:50%;
    border:1px solid var(--line-invert);
    color:#fff;
    font-size:15px;
    line-height:1;
    transition:background-color .25s ease;
  }
  .nav-close:hover{ background:rgba(255,255,255,.12); }
  .nav-list{
    flex:1 1 auto;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    width:100%;
    padding:18px 0;
  }
  .nav-list a{
    width:100%;
    padding:14px;
    border-radius:var(--radius-md);
    font-size:17px;
  }
  .nav-list a::before{ font-size:12px; }
  .nav-tail{
    display:block;
    padding-top:16px;
    border-top:1px solid var(--line-invert);
  }
  .nav-tail-note{
    margin-top:12px;
    font-family:var(--font-mono);
    font-size:11.5px;
    line-height:1.85;
    color:rgba(255,255,255,.55);
  }
  .nav-scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:110;
    background:rgba(6,38,28,.6);
    opacity:0;
    visibility:hidden;
    transition:opacity .3s ease,visibility .3s ease;
  }
  body.nav-open .nav-scrim{ opacity:1; visibility:visible; }
}

body.nav-open{ overflow:hidden; }

/* ---------- 7. 页脚 ---------- */
.site-footer{
  margin-top:clamp(56px,9vw,120px);
  color:rgba(255,255,255,.76);
  background:
    radial-gradient(80% 120% at 92% 0%,rgba(0,194,168,.12),transparent 58%),
    linear-gradient(180deg,#0B3D2E 0%,#06261C 100%);
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-shell{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(28px,4vw,52px);
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  padding-block:clamp(44px,6vw,76px);
}
@media (min-width:640px){
  .footer-shell{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:1040px){
  .footer-shell{ grid-template-columns:1.5fr 1fr 1fr 1.25fr; }
}

.footer-logo{
  font-size:clamp(20px,2vw,24px);
  font-weight:800;
  letter-spacing:.16em;
  color:#fff;
}
.footer-latin{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.3em;
  color:rgba(255,255,255,.42);
}
.footer-icp{
  display:inline-flex;
  align-items:center;
  margin-top:18px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-invert);
  font-family:var(--font-mono);
  font-size:12px;
  color:rgba(255,255,255,.66);
}

.footer-title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.28em;
  color:var(--orange);
}
.footer-list{ display:grid; gap:9px; font-size:14.5px; }
.footer-list a{
  border-bottom:1px solid transparent;
  transition:color .22s ease,border-color .22s ease;
}
.footer-list a:hover{ color:#fff; border-bottom-color:var(--orange); }
.footer-list--def li{ display:flex; gap:12px; align-items:baseline; }
.footer-key{
  flex:0 0 3.4em;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:rgba(255,255,255,.42);
}
.footer-value{
  flex:1 1 auto;
  min-width:0;
  word-break:break-word;
}

.copy-mail{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding:8px 16px;
  border-radius:var(--radius-pill);
  border:1px dashed rgba(255,255,255,.32);
  color:#fff;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  transition:border-color .25s ease,background-color .25s ease;
}
.copy-mail:hover{
  background:rgba(255,255,255,.08);
  border-color:var(--orange);
}
.copy-hint{
  display:block;
  margin-top:10px;
  min-height:1.2em;
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--cyan);
}

.footer-base{ border-top:1px solid rgba(255,255,255,.1); }
.footer-base-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 28px;
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  padding-block:20px 28px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:rgba(255,255,255,.58);
}

/* ---------- 8. 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 24px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:background-color .24s ease,color .24s ease,border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn:active{ transform:translateY(0); }
.btn--accent{
  background:var(--orange);
  color:#fff;
  box-shadow:0 16px 30px -20px rgba(255,107,53,.95);
}
.btn--accent:hover{ background:#FF7E4F; }
.btn--dark{ background:var(--green); color:#fff; }
.btn--dark:hover{ background:var(--green-soft); }
.btn--ghost{
  border-color:var(--line);
  color:var(--green);
  background:transparent;
}
.btn--ghost:hover{ background:var(--gray); }
.btn--onDark{
  border-color:rgba(255,255,255,.32);
  color:#fff;
}
.btn--onDark:hover{ background:rgba(255,255,255,.12); }
.btn--sm{ padding:9px 18px; font-size:13px; }
.btn--block{ width:100%; }
.btn--entry{ padding:10px 20px; font-size:14px; }

.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  background:var(--gray);
  color:var(--green);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  white-space:nowrap;
}
.pill--accent{ background:var(--orange-soft); color:#8A3210; }
.pill--light{ background:rgba(255,255,255,.14); color:#fff; }
.pill--line{
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
}

/* ---------- 9. 卡片 ---------- */
.card{
  position:relative;
  padding:clamp(20px,2.4vw,32px);
  border-radius:var(--radius-lg);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.card--flat{ box-shadow:none; }
.card--tint{ background:var(--surface-muted); border-color:transparent; }
.card--dark{
  background:
    radial-gradient(110% 90% at 100% 0%,rgba(0,194,168,.16),transparent 60%),
    linear-gradient(160deg,#0B3D2E 0%,#06261C 100%);
  border-color:transparent;
  color:rgba(255,255,255,.82);
}
.card--dark h3,
.card--dark h4{ color:#fff; }
.card--dark .text-muted{ color:rgba(255,255,255,.62); }
.card--slab{
  transform:skewX(-3deg);
  border-radius:var(--radius-lg);
}
.card--slab > *{ transform:skewX(3deg); }
.card--lift:hover{
  box-shadow:var(--shadow-lift);
  transform:translateY(-4px);
  transition:transform .3s var(--ease),box-shadow .3s ease;
}

/* ---------- 10. 技能树式步骤 ---------- */
.steps{
  counter-reset:step;
  display:grid;
  gap:14px;
}
.step{
  position:relative;
  counter-increment:step;
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:start;
  gap:clamp(14px,2vw,24px);
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--radius-lg);
  background:var(--white);
  border:1px solid var(--line);
}
.step::before{
  content:"";
  position:absolute;
  left:calc(clamp(18px,2.2vw,26px) + 21px);
  top:-14px;
  width:2px;
  height:14px;
  background:linear-gradient(180deg,transparent,var(--orange));
}
.step:first-child::before{ display:none; }
.step-index{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border-radius:var(--radius-md);
  background:var(--green);
  color:#fff;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
}
.step-index::before{ content:counter(step,decimal-leading-zero); }
.step-body h3{ margin-bottom:6px; }
.step-body p{ color:var(--muted); font-size:15px; }

/* ---------- 11. 数据表格 ---------- */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--radius-md);
  -webkit-overflow-scrolling:touch;
}
.data-table{
  width:100%;
  font-family:var(--font-mono);
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.data-table caption{
  caption-side:top;
  padding-bottom:12px;
  text-align:left;
  font-family:var(--font-sans);
  font-size:13px;
  color:var(--muted);
}
.data-table th,
.data-table td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  white-space:nowrap;
}
.data-table thead th{
  background:var(--surface-muted);
  border-bottom-color:transparent;
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}
.data-table tbody tr{ transition:background-color .2s ease; }
.data-table tbody tr:hover{ background:#F1F6F4; }
.data-table .is-num{ text-align:right; }
.data-table .is-highlight{ color:var(--orange); font-weight:700; }
.section--dark .data-table th,
.section--dark .data-table td{ border-bottom-color:rgba(255,255,255,.12); }
.section--dark .data-table thead th{ background:rgba(255,255,255,.06); color:rgba(255,255,255,.7); }
.section--dark .data-table tbody tr:hover{ background:rgba(255,255,255,.06); }

/* ---------- 12. 图片容器基座 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(150deg,#0B3D2E 0%,#06261C 100%);
  aspect-ratio:16 / 9;
  isolation:isolate;
}
.media > img,
.media > svg,
.media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--wide{ aspect-ratio:21 / 9; }
.media--square{ aspect-ratio:1 / 1; }
.media--tall{ aspect-ratio:3 / 4; }
.media--circle{ border-radius:50%; aspect-ratio:1 / 1; }
.media--rounded-sm{ border-radius:var(--radius-md); }
.media--pitch::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(90deg,transparent 0 46px,rgba(255,255,255,.05) 46px 48px);
}
.media-caption{
  margin-top:10px;
  font-size:12.5px;
  color:var(--muted);
}
.section--dark .media-caption{ color:rgba(255,255,255,.6); }

/* ---------- 13. 面包屑 / 注释 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--muted);
}
.breadcrumb li + li::before{
  content:"/";
  margin-right:8px;
  color:rgba(11,61,46,.3);
}
.breadcrumb a:hover{ color:var(--orange); }
.breadcrumb [aria-current="page"]{ color:var(--green); font-weight:700; }

.note-vertical{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.4em;
  font-family:var(--font-mono);
  font-size:11px;
  text-transform:uppercase;
  color:var(--muted);
}
.note-rotated{
  display:inline-block;
  transform:rotate(-90deg);
  transform-origin:left center;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.28em;
  color:var(--muted);
}
.section--dark .note-vertical,
.section--dark .note-rotated{ color:rgba(255,255,255,.55); }

/* ---------- 14. 滚动显现 ---------- */
html.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
html.js-ready [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 15. 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;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  html.js-ready [data-reveal]{
    opacity:1;
    transform:none;
  }
}