/* =========================================================
   华体汇国际 简体中文站 — 共享样式 /assets/site.css
   ========================================================= */

:root{
  --gold:#E8A33D;
  --gold-light:#F6D9A0;
  --deep:#0F2A47;
  --deep-dark:#081A2E;
  --teal:#29C7B7;
  --cloud:#F7F4EE;
  --graphite:#1B2430;
  --mist:#6B7C93;
  --mint:#DCF2EE;
  --coral:#E4663F;

  --line:rgba(107,124,147,.28);
  --line-gold:rgba(232,163,61,.4);
  --line-light:rgba(247,244,238,.14);

  --ticker-h:34px;
  --nav-h:74px;
  --header-h:calc(var(--ticker-h) + var(--nav-h));
  --wrap:1280px;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,"Times New Roman",serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --radius-lg:26px;
  --radius-md:18px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--cloud);
  color:var(--graphite);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:500;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,picture,video{max-width:100%;display:block}
img{height:auto}
h1,h2,h3,h4,h5{font-weight:900;line-height:1.22;letter-spacing:.03em;margin:0 0 .55em}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.75rem,3.4vw,3rem)}
h3{font-size:clamp(1.25rem,2vw,1.375rem)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
button{font:inherit;color:inherit}
a{color:var(--deep)}
::selection{background:var(--gold-light);color:#3a2400}

:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:6px}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--gold-light)}

/* ---------- 工具 ---------- */
.sr-only{
  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;
}
.skip-link{
  position:fixed;left:16px;top:-90px;z-index:400;
  padding:12px 20px;border-radius:0 0 14px 14px;
  background:var(--gold);color:#081A2E;font-weight:800;font-size:14px;
  text-decoration:none;letter-spacing:.06em;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:820px}
.prose{max-width:38em}
.prose p{font-size:17px}

.eyebrow{
  display:block;margin:0 0 10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.26em;
  color:var(--mist);text-transform:uppercase;
}
.sec-num{
  display:block;margin:0 0 6px;
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(2.2rem,5vw,4rem);line-height:1;
  letter-spacing:.02em;color:var(--gold);
}
.rule{height:1px;border:0;background:var(--line);margin:0}
.rule--gold{background:var(--line-gold)}

/* ---------- 进度条 ---------- */
.progress{
  position:absolute;left:0;right:0;top:0;height:3px;
  background:rgba(247,244,238,.1);pointer-events:none;
}
.progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--teal),var(--gold));
  transition:width .12s linear;
}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  color:var(--cloud);
  background:rgba(8,26,46,.74);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(232,163,61,.22);
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-condensed{
  background:var(--deep-dark);
  border-bottom-color:rgba(232,163,61,.34);
  box-shadow:0 16px 36px rgba(8,26,46,.34);
}

/* 公告带 */
.ticker{
  background:linear-gradient(90deg,rgba(232,163,61,.2),rgba(41,199,183,.14) 58%,rgba(8,26,46,0));
}
.ticker__inner{
  max-width:var(--wrap);margin:0 auto;height:var(--ticker-h);
  padding:0 24px;display:flex;align-items:center;gap:12px;
  font-size:12.5px;letter-spacing:.04em;color:rgba(247,244,238,.78);
}
.ticker__dot{
  flex:none;width:7px;height:7px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 4px rgba(41,199,183,.16);
}
.ticker__label{
  flex:none;font-weight:800;letter-spacing:.16em;color:var(--gold-light);
}
.ticker__text{
  min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:rgba(247,244,238,.7);
}
.ticker__meta{
  margin-left:auto;flex:none;white-space:nowrap;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(247,244,238,.56);
}
.ticker__link{
  flex:none;white-space:nowrap;text-decoration:none;
  color:var(--teal);border-bottom:1px solid rgba(41,199,183,.45);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.ticker__link:hover{color:#fff;border-bottom-color:#fff}

/* 导航条 */
.masthead__inner{
  max-width:var(--wrap);margin:0 auto;height:var(--nav-h);
  padding:0 24px;display:flex;align-items:center;gap:22px;
  transition:height .3s var(--ease);
}
.site-header.is-condensed .masthead__inner{height:58px}

.brand{
  display:inline-flex;align-items:center;gap:12px;flex:none;
  text-decoration:none;color:var(--cloud);
}
.brand__mark{
  flex:none;width:42px;height:42px;display:grid;place-items:center;
  font-size:21px;font-weight:900;letter-spacing:.02em;color:#081A2E;
  background:linear-gradient(140deg,var(--gold-light),var(--gold) 58%,#c57f1c);
  border-radius:16px 5px 16px 5px;
  transition:transform .3s var(--ease);
}
.brand:hover .brand__mark{transform:translateY(-2px)}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-weight:900;font-size:18px;letter-spacing:.1em}
.brand__sub{font-size:10.5px;letter-spacing:.3em;color:rgba(247,244,238,.55)}

.primary-nav{margin-left:auto}
.primary-nav__list{
  display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none;
}
.primary-nav__link{
  display:block;padding:10px 13px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.05em;
  color:rgba(247,244,238,.76);text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.primary-nav__link:hover{color:#fff;background:rgba(41,199,183,.16)}
.primary-nav__link[aria-current="page"]{
  color:var(--gold);background:rgba(232,163,61,.14);
  box-shadow:inset 0 0 0 1px rgba(232,163,61,.34);
}
.nav-foot{display:none}

.masthead__tools{margin-left:auto;display:flex;align-items:center;gap:10px;flex:none}
.search-trigger{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;
  border:1px solid rgba(247,244,238,.22);
  color:rgba(247,244,238,.86);font-size:14px;font-weight:600;
  letter-spacing:.05em;text-decoration:none;white-space:nowrap;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.search-trigger:hover{
  border-color:var(--teal);color:var(--teal);background:rgba(41,199,183,.1);
}
.search-trigger__glyph{font-size:16px;line-height:1}
.cta-mini{
  display:inline-flex;align-items:center;
  padding:10px 18px;border-radius:999px;
  background:var(--gold);color:#081A2E;
  font-size:14px;font-weight:800;letter-spacing:.06em;text-decoration:none;white-space:nowrap;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.cta-mini:hover{background:var(--gold-light);transform:translateY(-1px)}

.nav-toggle{
  display:none;position:relative;flex:none;
  width:44px;height:44px;padding:0;cursor:pointer;
  border-radius:14px;border:1px solid rgba(247,244,238,.24);
  background:rgba(247,244,238,.06);color:var(--cloud);
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle::before,
.nav-toggle::after{
  content:"";position:absolute;left:12px;right:12px;height:2px;
  border-radius:2px;background:currentColor;
  transition:transform .26s var(--ease),opacity .2s var(--ease);
}
.nav-toggle::before{top:16px}
.nav-toggle::after{top:25px}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--teal);background:rgba(41,199,183,.16);
}
.nav-toggle[aria-expanded="true"]::before{transform:translateY(4.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"]::after{transform:translateY(-4.5px) rotate(-45deg)}

@keyframes navDrop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--deep-dark);color:rgba(247,244,238,.66);
  border-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--teal),var(--gold) 58%,var(--coral));
}
.footer__inner{
  max-width:var(--wrap);margin:0 auto;
  padding:58px 24px 42px;display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:38px 30px;
}
.footer__brand{
  grid-column:1/-1;display:flex;align-items:center;gap:14px;
  padding-bottom:26px;margin-bottom:6px;
  border-bottom:1px solid var(--line-light);
}
.footer__brand .brand__mark{width:46px;height:46px;font-size:22px}
.footer__brandname{
  margin:0;font-size:19px;font-weight:900;letter-spacing:.1em;color:var(--cloud);
}
.footer__brandsub{
  margin:3px 0 0;font-size:13px;letter-spacing:.06em;color:rgba(247,244,238,.52);
}
.footer__title{
  margin:0 0 16px;font-family:var(--font-mono);
  font-size:12.5px;font-weight:700;letter-spacing:.2em;color:var(--gold);
}
.footer__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer__link{
  display:inline-block;font-size:15px;color:rgba(247,244,238,.72);
  text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer__link:hover{color:var(--teal);transform:translateX(3px)}
.footer__note{
  margin:16px 0 0;font-size:13px;line-height:1.7;color:rgba(247,244,238,.5);
}
.footer__cta{
  display:inline-flex;align-items:center;margin-top:14px;
  padding:11px 18px;border-radius:999px;
  border:1px solid rgba(41,199,183,.5);color:var(--teal);
  font-size:14px;font-weight:700;letter-spacing:.05em;text-decoration:none;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.footer__cta:hover{background:rgba(41,199,183,.15);color:#fff;border-color:var(--teal)}

.footer__base{border-top:1px solid var(--line-light);background:rgba(0,0,0,.18)}
.footer__base-inner{
  max-width:var(--wrap);margin:0 auto;padding:20px 24px;
  display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(247,244,238,.55);
}
.footer__contact,
.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:0;
}
.footer__mono{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;
  color:rgba(247,244,238,.76);
}
.footer__dot{
  display:inline-block;width:4px;height:4px;border-radius:50%;
  background:rgba(247,244,238,.28);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:110;
  width:46px;height:46px;padding:0;cursor:pointer;
  display:grid;place-items:center;
  border-radius:16px 5px 16px 5px;
  border:1px solid rgba(232,163,61,.45);
  background:rgba(8,26,46,.94);color:var(--gold);
  font-size:18px;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--deep);color:var(--gold-light)}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:800;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--gold{background:var(--gold);color:#081A2E}
.btn--gold:hover{background:var(--gold-light);transform:translateY(-2px)}
.btn--deep{background:var(--deep);color:var(--cloud)}
.btn--deep:hover{background:#16406c;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(15,42,71,.26);color:var(--deep);background:transparent}
.btn--ghost:hover{border-color:var(--teal);color:#127e73}
.btn--ghost-light{border-color:rgba(247,244,238,.32);color:var(--cloud);background:transparent}
.btn--ghost-light:hover{border-color:var(--gold);color:var(--gold-light)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.05em;
  color:var(--mist);
}
.crumbs a{color:var(--mist);text-decoration:none}
.crumbs a:hover{color:var(--gold)}
.crumbs__sep{opacity:.55}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--mint);color:#12756a;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.tag--gold{background:var(--gold-light);color:#7a4c06}
.tag--coral{background:rgba(228,102,63,.16);color:#b8441f}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--radius-lg);
  background:linear-gradient(140deg,#12395e,var(--deep-dark) 72%);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(200deg,rgba(232,163,61,.16),transparent 58%);
}
.media img,
.media picture>img{width:100%;height:100%;object-fit:cover}
.media--hero{aspect-ratio:16/9}
.media--wide{aspect-ratio:3/2}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--panorama{aspect-ratio:21/9}
.media--inline{border-radius:var(--radius-md)}
.media__caption{
  position:absolute;left:18px;right:18px;bottom:14px;z-index:2;
  margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  color:rgba(247,244,238,.8);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:26px}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--5-4-3{grid-template-columns:5fr 4fr 3fr}
.grid--8-4{grid-template-columns:8fr 4fr}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}

/* ---------- 章节编号导航 ---------- */
.sec-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;
  color:rgba(247,244,238,.5);text-decoration:none;
  opacity:.45;transition:opacity .24s var(--ease),color .24s var(--ease);
}
.sec-link:hover{opacity:1;color:var(--gold-light)}
.sec-link.is-active,
.sec-link[aria-current="true"]{opacity:1;color:var(--gold)}

/* ---------- 进入视口动效 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(12px)}
.js [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .masthead__inner{gap:14px}
  .primary-nav__link{padding:9px 10px;font-size:14.5px;letter-spacing:.02em}
}

@media (max-width:980px){
  :root{--nav-h:62px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .masthead__tools{margin-left:auto}
  .primary-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    display:none;margin-left:0;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    padding:14px 18px 26px;
    background:var(--deep-dark);
    border-top:1px solid rgba(232,163,61,.26);
    border-bottom:1px solid rgba(232,163,61,.26);
    box-shadow:0 28px 50px rgba(8,26,46,.48);
  }
  .primary-nav[data-open]{display:block;animation:navDrop .26s var(--ease)}
  .primary-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .primary-nav__link{
    padding:15px 10px;border-radius:10px;font-size:17px;
    border-bottom:1px solid rgba(247,244,238,.1);
  }
  .primary-nav__link[aria-current="page"]{
    border-bottom-color:rgba(232,163,61,.34);box-shadow:none;
  }
  .nav-foot{
    display:block;margin-top:20px;padding:20px 10px 4px;
    border-top:1px dashed rgba(247,244,238,.2);
  }
  .nav-foot__label{
    margin:0 0 12px;font-family:var(--font-mono);
    font-size:11px;letter-spacing:.24em;color:var(--teal);
  }
  .nav-foot__link{
    display:block;margin-bottom:8px;padding:11px 14px;
    border-radius:12px;border-left:3px solid var(--gold);
    background:rgba(232,163,61,.12);
    color:var(--gold-light);font-size:15px;font-weight:700;text-decoration:none;
  }
  .nav-foot__link:hover{background:rgba(232,163,61,.2)}
  .nav-foot__meta{
    margin:10px 0 0;font-family:var(--font-mono);
    font-size:12.5px;letter-spacing:.03em;color:rgba(247,244,238,.58);
  }
  .grid--7-5,.grid--5-4-3,.grid--8-4,.grid--halves{grid-template-columns:1fr}
}

@media (max-width:820px){
  .ticker__text{display:none}
  .brand__sub{display:none}
  .footer__inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 22px}
}

@media (max-width:720px){
  body{font-size:16px}
  .ticker__inner,
  .masthead__inner,
  .wrap,
  .footer__inner,
  .footer__base-inner{padding-left:18px;padding-right:18px}
  .footer__inner{padding-top:44px;padding-bottom:32px}
  .search-trigger__text{display:none}
  .search-trigger{padding:9px 12px}
  .media--panorama{aspect-ratio:16/9}
  .media--tall{aspect-ratio:4/5}
  .media__caption{left:14px;right:14px;bottom:12px}
}

@media (max-width:560px){
  .cta-mini{display:none}
  .brand__name{font-size:16.5px;letter-spacing:.06em}
  .brand__mark{width:38px;height:38px;font-size:19px;border-radius:14px 4px 14px 4px}
  .ticker__meta{font-size:11px}
  .footer__inner{grid-template-columns:1fr}
  .footer__base-inner{flex-direction:column;align-items:flex-start}
}

/* ---------- 无障碍：降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js [data-reveal],
  .js [data-reveal].is-in{opacity:1 !important;transform:none !important}
  .progress__bar{transition:none}
  .to-top{transition:none}
}