/* ==========================================================================
   欧皇冠军 · CHAMPION-OH — Shared Site Kit (/assets/site.css)
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B2B24;
  --ink-2:#123A31;
  --ink-3:#1E4A3E;
  --gold:#D8A63A;
  --gold-hi:#F2C75C;
  --red:#E2402F;
  --cyan:#2FD6C4;
  --paper:#F6F1E6;
  --grey:#8FA39B;
  --text:#14201C;

  --line-gold:rgba(216,166,58,.26);
  --line-gold-strong:rgba(216,166,58,.55);
  --line-grey:rgba(143,163,155,.22);
  --ink-soft:rgba(246,241,230,.74);

  --font-sans:"Noto Sans SC","Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Oswald","Noto Sans SC",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;

  --header-h:64px;
  --rail-w:72px;
  --gutter:24px;
  --maxw:1440px;
  --edge:clamp(16px,3vw,40px);
  --ease:cubic-bezier(.2,.7,.2,1);
}

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

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px);}

body,
h1,h2,h3,h4,h5,h6,
p,figure,blockquote,dl,dd,ul,ol{margin:0;}

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

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

a{color:inherit;}

button{font:inherit;color:inherit;background:none;border:0;}

table{border-collapse:collapse;}

:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px;}

/* ---------- 3. 中文排版基线 ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,h5,h6{
  font-weight:700;
  line-height:1.12;
  letter-spacing:.01em;
}

p{orphans:2;widows:2;}

strong,b{font-weight:700;}

::selection{background:var(--gold);color:var(--ink);}

/* ---------- 4. 布局容器 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--edge);
}

.section{padding-block:clamp(48px,7vw,104px);}

.stack > * + *{margin-top:1em;}

.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}

.on-dark{background:var(--ink);color:var(--paper);}
.on-paper{background:var(--paper);color:var(--text);}
.on-dark .eyebrow{color:var(--gold);}
.on-paper .eyebrow{color:#8A6210;}

/* ---------- 5. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.9em 1.6em;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:0;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}

.btn--gold{background:var(--gold);color:var(--ink);border-color:var(--gold);}
.btn--gold:hover{background:var(--gold-hi);border-color:var(--gold-hi);}
.btn--gold:active{transform:translateY(1px);}

.btn--ghost{background:transparent;color:var(--gold-hi);border-color:var(--line-gold-strong);}
.btn--ghost:hover{background:rgba(216,166,58,.12);border-color:var(--gold);color:var(--gold-hi);}

.btn--sm{font-size:13px;padding:.72em 1.15em;letter-spacing:.05em;}

/* ---------- 6. 小标 / 正文 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gold);
  line-height:1.4;
}
.eyebrow::before{
  content:"";
  width:28px;
  height:2px;
  flex:0 0 28px;
  background:currentColor;
}

.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.8;
}
.prose p + p{margin-top:1em;}
.prose h2{margin-top:1.8em;margin-bottom:.6em;font-size:clamp(22px,2.4vw,30px);}
.prose h3{margin-top:1.4em;margin-bottom:.5em;font-size:clamp(18px,1.8vw,22px);}
.prose a{color:#0F6E62;text-decoration:none;border-bottom:1px solid var(--cyan);}
.prose a:hover{color:var(--ink);background:rgba(47,214,196,.18);}
.prose ul,.prose ol{margin-block:1em;padding-left:1.2em;}
.prose ul li{list-style:none;position:relative;padding-left:16px;}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:2px;
  background:var(--gold);
}
.prose ol{list-style:decimal;}

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs{margin-block:22px 0;font-size:13px;color:var(--grey);}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumbs__list > li{display:flex;align-items:center;gap:8px;}
.breadcrumbs__list > li + li::before{content:"/";color:rgba(143,163,155,.6);}
.breadcrumbs a{text-decoration:none;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);}
.breadcrumbs a:hover{color:var(--cyan);border-bottom-color:currentColor;}
.breadcrumbs [aria-current="page"]{color:var(--gold);}

/* ---------- 8. 图片容器基础规则（页面阶段放置占位） ---------- */
.media{
  position:relative;
  overflow:hidden;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  background:var(--ink-3);
  border:1px solid var(--line-gold);
}
.media > img,
.media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(242,199,92,.22), transparent 56%),
    linear-gradient(180deg, rgba(11,43,36,0) 42%, rgba(11,43,36,.58) 100%);
}
.media--wide{aspect-ratio:21 / 9;}
.media--portrait{aspect-ratio:3 / 4;}
.media--square{aspect-ratio:1 / 1;}
.media--placeholder{
  display:grid;
  place-items:center;
  color:rgba(246,241,230,.38);
  font-size:11px;
  letter-spacing:.26em;
  text-transform:uppercase;
}
.media__caption{
  margin-top:10px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}

/* ---------- 9. 数据组件 ---------- */
.stat{display:flex;flex-direction:column;gap:6px;}
.stat__num{
  font-family:var(--font-num);
  font-weight:800;
  font-size:clamp(46px,7vw,110px);
  line-height:.86;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--gold-hi);
}
.stat__label{
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
}

.meter{
  position:relative;
  display:block;
  height:8px;
  background:rgba(143,163,155,.2);
  overflow:hidden;
}
.meter__fill{
  position:absolute;
  inset:0 auto 0 0;
  width:var(--meter,0%);
  background:var(--cyan);
  transition:width .4s var(--ease);
}
.meter--red .meter__fill{background:var(--red);}
.meter--gold .meter__fill{background:var(--gold);}

/* ---------- 10. 站点头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid var(--line-gold);
}

.skip-link{
  position:absolute;
  left:12px;
  top:-80px;
  z-index:200;
  padding:10px 18px;
  background:var(--gold);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:10px;}

.header-bar{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,28px);
  width:100%;
  max-width:var(--maxw);
  min-height:var(--header-h);
  margin-inline:auto;
  padding-inline:var(--edge);
}

/* 品牌锁定区 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--paper);
}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 38px;
  background:linear-gradient(150deg,var(--gold-hi),var(--gold));
  color:var(--ink);
  font-family:var(--font-num);
  font-size:17px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid rgba(11,43,36,.42);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.brand__txt{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:17px;font-weight:700;letter-spacing:.08em;}
.brand__tag{
  font-size:10px;
  letter-spacing:.2em;
  color:var(--grey);
  text-transform:uppercase;
  white-space:nowrap;
}
.brand--footer .brand__mark{width:44px;height:44px;flex-basis:44px;font-size:19px;}
.brand--footer .brand__name{font-size:19px;letter-spacing:.02em;}

/* 主导航 */
.primary-nav{margin-inline-start:auto;}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(2px,1vw,18px);
}
.primary-nav__link{
  position:relative;
  display:inline-block;
  padding:10px 8px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.05em;
  line-height:1.3;
  white-space:nowrap;
  text-decoration:none;
  color:rgba(246,241,230,.76);
  transition:color .18s var(--ease);
}
.primary-nav__link::after{
  content:"";
  position:absolute;
  left:8px;
  right:8px;
  bottom:3px;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .25s var(--ease);
}
.primary-nav__link:hover{color:var(--paper);}
.primary-nav__link:hover::after{transform:scaleX(1);}
.primary-nav__link[aria-current="page"]{color:var(--gold-hi);}
.primary-nav__link[aria-current="page"]::after{transform:scaleX(1);}

/* 头部操作区 */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.header-cta{white-space:nowrap;}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:0 12px;
  height:44px;
  border:1px solid var(--line-gold-strong);
  color:var(--paper);
  cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);background:rgba(216,166,58,.1);}
.nav-toggle__lines{
  position:relative;
  display:block;
  width:18px;
  height:12px;
}
.nav-toggle__lines::before,
.nav-toggle__lines::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:var(--gold-hi);
  transition:transform .22s var(--ease);
}
.nav-toggle__lines::before{top:0;}
.nav-toggle__lines::after{bottom:0;}
.nav-toggle__text{
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--grey);
}
.site-header[data-open] .nav-toggle__lines::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__lines::after{transform:translateY(-5px) rotate(-45deg);}
.site-header[data-open] .nav-toggle__text{color:var(--gold-hi);}

/* 阅读进度 */
.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(216,166,58,.14);
  pointer-events:none;
}
.header-progress__bar{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--gold),var(--gold-hi));
  transform:scaleX(0);
  transform-origin:0 50%;
}

/* 左侧刻度栏（≥1200px） */
.edge-rail{display:none;}

/* ---------- 11. 站点页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--paper);
  border-top:1px solid var(--line-gold);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(216,166,58,.1), transparent 58%),
    linear-gradient(90deg, rgba(143,163,155,.06) 1px, transparent 1px);
  background-size:auto, calc(100% / 6) 100%;
}

.footer-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(32px,5vw,64px);
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(44px,6vw,84px) var(--edge) clamp(32px,4vw,56px);
}

.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:18px;}
.footer-brand__line{
  max-width:34ch;
  font-size:15px;
  line-height:1.75;
  color:var(--ink-soft);
}

.copy-mail{
  display:inline-flex;
  flex-direction:column;
  align-items:flex-start;
  gap:2px;
  margin-top:6px;
  padding:12px 16px;
  border:1px solid var(--line-gold-strong);
  text-align:left;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.copy-mail:hover{background:var(--ink-2);border-color:var(--gold);}
.copy-mail__label{
  font-size:10px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--grey);
}
.copy-mail__value{
  font-family:var(--font-num);
  font-size:19px;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1.3;
  color:var(--gold-hi);
  word-break:break-all;
}
.copy-mail__hint{
  font-size:11px;
  letter-spacing:.1em;
  color:var(--grey);
  transition:color .18s var(--ease);
}
.copy-mail[data-copied]{border-color:var(--cyan);}
.copy-mail[data-copied] .copy-mail__hint{color:var(--cyan);}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,32px);
}
.footer-col__title{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  line-height:1.4;
  color:var(--gold);
}
.footer-col__title::after{
  content:"";
  flex:1 1 auto;
  height:1px;
  background:var(--line-gold);
}
.footer-col__list{display:grid;gap:11px;}
.footer-col__link{
  display:inline-flex;
  align-items:center;
  gap:0;
  font-size:15px;
  line-height:1.5;
  text-decoration:none;
  color:rgba(246,241,230,.76);
  transition:color .18s var(--ease),gap .18s var(--ease);
}
.footer-col__link::before{
  content:"";
  display:block;
  width:0;
  height:1px;
  background:var(--cyan);
  transition:width .2s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);}
.footer-col__link:hover::before{width:14px;margin-right:8px;}

.footer-meta{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 28px;
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:22px var(--edge) 40px;
  border-top:1px solid rgba(143,163,155,.2);
  font-size:13px;
  line-height:1.6;
  color:var(--grey);
}
.footer-meta__item{margin:0;}

.footer-watermark{
  position:absolute;
  right:14px;
  bottom:0;
  z-index:0;
  font-family:var(--font-num);
  font-weight:800;
  font-size:clamp(58px,12vw,168px);
  line-height:.78;
  letter-spacing:-.02em;
  color:transparent;
  -webkit-text-stroke:1px rgba(216,166,58,.14);
  pointer-events:none;
  user-select:none;
  white-space:nowrap;
}

/* ---------- 12. 滚动显现（需 JS 添加 .js-reveal） ---------- */
.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.js-reveal [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ---------- 13. 响应式：平板 / 手机 ---------- */
@media (max-width:1060px){
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .primary-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    margin-inline-start:0;
    padding:8px var(--edge) 32px;
    background:var(--ink-2);
    border-bottom:1px solid var(--line-gold);
    box-shadow:0 24px 48px rgba(0,0,0,.45);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-12px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .primary-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .primary-nav__list > li{border-bottom:1px solid var(--line-grey);}
  .primary-nav__link{
    display:block;
    padding:16px 2px;
    font-size:18px;
    font-weight:600;
    letter-spacing:.03em;
    color:var(--paper);
  }
  .primary-nav__link::after{display:none;}
  .primary-nav__link[aria-current="page"]{
    color:var(--gold-hi);
    box-shadow:inset 3px 0 0 var(--gold);
    padding-left:14px;
  }
  .site-header[data-open] .primary-nav{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
}

@media (max-width:820px){
  body{font-size:16px;}
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
  .brand__tag{font-size:9px;letter-spacing:.14em;}
}

@media (max-width:560px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .header-bar{gap:8px;}
  .brand__tag{display:none;}
  .footer-nav{grid-template-columns:1fr 1fr;}
  .footer-meta{flex-direction:column;align-items:flex-start;gap:8px;}
  .nav-toggle__text{display:none;}
  .nav-toggle{padding:0 10px;}
}

@media (max-width:380px){
  .brand__name{font-size:15px;}
  .brand__mark{width:34px;height:34px;flex-basis:34px;font-size:15px;}
}

/* ---------- 14. 桌面宽屏：左侧刻度栏 ---------- */
@media (min-width:1200px){
  body{padding-left:var(--rail-w);}

  .edge-rail{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    z-index:120;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:22px;
    width:var(--rail-w);
    background:var(--ink);
    border-right:1px solid var(--line-gold);
    pointer-events:none;
  }
  .edge-rail__tag{
    writing-mode:vertical-rl;
    font-size:10px;
    font-weight:600;
    letter-spacing:.42em;
    text-transform:uppercase;
    color:var(--grey);
  }
  .edge-rail__track{
    position:relative;
    display:block;
    width:2px;
    height:34vh;
    background:rgba(143,163,155,.22);
  }
  .edge-rail__track::before{
    content:"";
    position:absolute;
    top:0;
    bottom:0;
    left:-10px;
    width:6px;
    background-image:repeating-linear-gradient(
      180deg,
      rgba(143,163,155,.38) 0 1px,
      transparent 1px 12px
    );
  }
  .edge-rail__fill{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:0;
    background:linear-gradient(180deg,var(--gold-hi),var(--gold));
    transition:height .12s linear;
  }
}

/* ---------- 15. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js-reveal [data-reveal]{opacity:1 !important;transform:none !important;}
  .edge-rail__fill{transition:none !important;}
}