/* ============================================================
   太阳城主站 · 共享样式表 /assets/site.css
   浮岛导航 · 日轨页脚 · 档案式通用组件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --sun-orange:#FF6A00;
  --sun-gold:#FFB020;
  --sun-pale:#FFE0B2;
  --sand:#F6F1E7;
  --paper:#FFFFFF;
  --navy:#0B1B33;
  --navy-2:#12263F;
  --cyan:#26E0D6;
  --slate:#5A6B7C;
  --ink:#06121F;

  --radius-s:14px;
  --radius-m:22px;
  --radius-l:32px;
  --radius-pill:999px;

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

  --shadow-1:0 10px 24px rgba(11,27,51,.08);
  --shadow-2:0 18px 44px rgba(11,27,51,.14);
  --shadow-sun:0 12px 28px rgba(255,106,0,.30);

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

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--navy);
  background-color:var(--sand);
  background-image:radial-gradient(circle at 88% -5%, rgba(255,176,32,.20), rgba(255,176,32,0) 46%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;line-height:1.16;color:var(--navy)}
h1{font-size:clamp(48px,9vw,132px);line-height:1.02}
h2{font-size:clamp(28px,4vw,56px)}
h3{font-size:24px;line-height:1.3}
p,li{text-wrap:pretty}
strong{font-weight:800}
::selection{background:var(--sun-pale);color:var(--ink)}

:focus-visible{outline:3px solid var(--sun-orange);outline-offset:3px;border-radius:8px}
.section--dark :focus-visible,
.site-footer :focus-visible,
.nav-island :focus-visible{outline-color:var(--cyan)}

#main-content{scroll-margin-top:112px}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.coord{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;color:var(--slate);text-transform:uppercase}
.coord--strong{color:var(--navy);font-weight:600}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:8px;z-index:200;
  padding:10px 20px;border-radius:var(--radius-pill);
  background:var(--navy);color:var(--sand);
  font-size:14px;font-weight:700;
  opacity:0;pointer-events:none;transform:translateY(-130%);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.skip-link:focus{opacity:1;pointer-events:auto;transform:translateY(0)}

/* ---------- 5. 头部：悬浮胶囊浮岛 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  padding:16px 0 14px;
  background:transparent;
  transition:padding .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header[data-compact]{
  padding:8px 0;
  background:rgba(246,241,231,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:0 12px 30px rgba(11,27,51,.10);
}
.header-shell{
  position:relative;
  display:flex;align-items:center;gap:12px;flex-wrap:nowrap;
  width:min(1280px,calc(100% - 40px));
  margin:0 auto;
}

/* 品牌浮岛 */
.brand-island{
  display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;
  padding:8px 18px 8px 10px;
  border-radius:var(--radius-pill);
  background:var(--paper);
  border:1px solid rgba(11,27,51,.08);
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.brand-island:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.brand-disc{
  position:relative;flex:0 0 auto;
  width:34px;height:34px;border-radius:50%;
  background:radial-gradient(circle at 34% 30%,#FFE0B2 0 16%,#FFB020 44%,#FF6A00 74%,#C24A00 100%);
  box-shadow:0 0 0 1px rgba(11,27,51,.16),0 6px 14px rgba(255,106,0,.34);
}
.brand-disc::after{content:"";position:absolute;inset:6px;border-radius:50%;border:1px solid rgba(255,255,255,.55)}
.brand-disc--lg{width:46px;height:46px;box-shadow:0 0 0 1px rgba(255,176,32,.4),0 12px 26px rgba(255,106,0,.36)}
.brand-words{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--navy)}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--slate)}
.site-header[data-compact] .brand-sub{display:none}

/* 导航胶囊 */
.nav-island{
  display:flex;align-items:center;
  margin:0 auto;padding:6px;
  border-radius:var(--radius-pill);
  background:linear-gradient(180deg,var(--navy),var(--navy-2));
  border:1px solid rgba(246,241,231,.08);
  box-shadow:0 14px 30px rgba(11,27,51,.22);
}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;min-height:44px;
  padding:0 16px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;
  color:rgba(246,241,231,.82);
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-link:hover{
  background:rgba(255,106,0,.18);
  color:#FFFFFF;
  box-shadow:inset 0 0 0 1px rgba(255,176,32,.5);
}
.nav-link[aria-current="page"]{
  background:linear-gradient(135deg,var(--sun-orange),var(--sun-gold));
  color:var(--ink);
  box-shadow:0 6px 16px rgba(255,106,0,.34);
}
.nav-tip{
  position:absolute;top:calc(100% + 12px);left:50%;
  padding:8px 13px;border-radius:12px;
  background:var(--ink);color:var(--sand);
  font-size:12.5px;font-weight:500;line-height:1.4;white-space:nowrap;
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translate(-50%,-5px);
  box-shadow:0 12px 26px rgba(6,18,31,.34);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.nav-link:hover .nav-tip,
.nav-link:focus-visible .nav-tip{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* 右侧动作区 */
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.cta-capsule{
  display:inline-flex;align-items:center;gap:9px;min-height:48px;
  padding:0 22px;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,var(--sun-orange),var(--sun-gold));
  color:var(--ink);font-size:15px;font-weight:800;
  box-shadow:var(--shadow-sun);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-capsule::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--ink);opacity:.7}
.cta-capsule:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,106,0,.38)}

.nav-toggle{
  display:none;align-items:center;gap:10px;min-height:48px;
  padding:0 16px;border-radius:var(--radius-pill);
  background:var(--navy);color:var(--sand);
  border:1px solid rgba(246,241,231,.14);
  font-size:14px;font-weight:700;
}
.nav-toggle-bars{position:relative;display:inline-block;width:18px;height:12px}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;
  background:var(--sun-gold);
  transition:transform .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

/* 阅读进度 */
.scroll-track{
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:rgba(11,27,51,.07);overflow:hidden;pointer-events:none;
}
.scroll-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--sun-gold),var(--sun-orange));
  transition:transform .12s linear;
}

/* ---------- 6. 页脚：日轨档案层 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  padding:clamp(48px,7vw,88px) 0 30px;
  background:var(--ink);
  color:rgba(246,241,231,.82);
}
.site-footer::before{
  content:"";position:absolute;left:50%;bottom:-380px;
  width:min(1120px,140%);aspect-ratio:1;transform:translateX(-50%);
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(255,106,0,.30),rgba(255,106,0,0) 62%);
}
.site-footer::after{
  content:"";position:absolute;left:50%;bottom:-320px;
  width:min(720px,110%);aspect-ratio:1;transform:translateX(-50%);
  border-radius:50%;border:1px solid rgba(255,176,32,.22);pointer-events:none;
  box-shadow:0 0 0 74px rgba(255,176,32,.05),0 0 0 148px rgba(255,176,32,.035);
}
.footer-shell{
  position:relative;z-index:2;
  display:flex;flex-direction:column;gap:clamp(32px,5vw,56px);
  width:min(1240px,calc(100% - 40px));
  margin:0 auto;
}
.footer-top{
  display:grid;grid-template-columns:minmax(240px,1fr) 2.2fr;
  gap:clamp(28px,5vw,64px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.footer-brand-name{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--sand);letter-spacing:-.01em}
.footer-tagline{font-size:15px;line-height:1.7;color:rgba(246,241,231,.72);max-width:32ch}
.footer-status{
  font-family:var(--font-mono);font-size:12.5px;line-height:1.75;
  color:var(--cyan);max-width:34ch;
  padding-left:12px;border-left:2px solid rgba(38,224,214,.5);
}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,3vw,32px)}
.footer-col-title{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;
  color:var(--sun-gold);margin-bottom:12px;
}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{
  display:inline-flex;align-items:center;min-height:36px;
  font-size:14.5px;color:rgba(246,241,231,.78);
  transition:color .16s var(--ease),padding-left .16s var(--ease);
}
.footer-links a::before{
  content:"";flex:0 0 auto;width:5px;height:5px;border-radius:50%;
  margin-right:9px;background:rgba(255,176,32,.55);
  transition:background-color .16s var(--ease);
}
.footer-links a:hover{color:var(--sun-gold);padding-left:6px}
.footer-links a:hover::before{background:var(--sun-orange)}
.footer-legal{
  display:flex;flex-direction:column;gap:16px;
  padding-top:24px;border-top:1px solid rgba(246,241,231,.14);
}
.footer-contact{font-size:13.5px;line-height:1.8;color:rgba(246,241,231,.66);max-width:76ch}
.footer-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 28px}
.footer-icp{font-family:var(--font-mono);font-size:13.5px;letter-spacing:.04em;color:rgba(246,241,231,.74)}
.footer-copy{font-family:var(--font-mono);font-size:12.5px;color:rgba(246,241,231,.5)}
.back-top{
  display:inline-flex;align-items:center;gap:10px;min-height:44px;
  padding:0 18px;border-radius:var(--radius-pill);
  border:1px solid rgba(246,241,231,.24);
  color:var(--sand);font-size:14px;font-weight:700;
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.back-top:hover{border-color:var(--sun-gold);color:var(--sun-gold);transform:translateY(-2px)}
.back-top-mark{
  width:12px;height:12px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--sun-pale),var(--sun-orange));
}

/* ---------- 7. 版式容器 ---------- */
.wrap{width:min(1240px,calc(100% - 40px));margin-inline:auto}
.wrap--narrow{width:min(880px,calc(100% - 40px));margin-inline:auto}
.section{position:relative;padding:clamp(48px,7vw,104px) 0}
.section--paper{background:var(--paper)}
.section--dark{background:var(--navy);color:rgba(246,241,231,.82)}
.section--dark h1,.section--dark h2,.section--dark h3{color:var(--sand)}
.section-head{display:flex;flex-direction:column;gap:12px;max-width:760px;margin-bottom:clamp(24px,4vw,48px)}
.section-head p{color:var(--slate);max-width:40ch}
.section--dark .section-head p{color:rgba(246,241,231,.72)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;
  color:var(--sun-orange);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--sun-orange)}
.lede{font-size:19px;line-height:1.7;color:var(--slate);max-width:38ch}
.orbit-line{
  height:1px;border:0;
  background-image:repeating-linear-gradient(90deg,rgba(11,27,51,.24) 0 6px,transparent 6px 15px);
}
.section--dark .orbit-line{background-image:repeating-linear-gradient(90deg,rgba(246,241,231,.24) 0 6px,transparent 6px 15px)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-pill);
  font-size:16px;font-weight:700;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:linear-gradient(135deg,var(--sun-orange),var(--sun-gold));color:var(--ink);box-shadow:var(--shadow-sun)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,106,0,.38)}
.btn--ghost{background:var(--paper);border-color:rgba(11,27,51,.2);color:var(--navy)}
.btn--ghost:hover{border-color:var(--sun-orange);color:var(--sun-orange);transform:translateY(-2px)}
.btn--onDark{border-color:rgba(246,241,231,.32);color:var(--sand)}
.btn--onDark:hover{border-color:var(--sun-gold);color:var(--sun-gold);transform:translateY(-2px)}

/* ---------- 9. 卡片与指标 ---------- */
.card{
  position:relative;overflow:hidden;
  padding:clamp(20px,3vw,32px);
  border-radius:var(--radius-m);
  background:var(--paper);
  border:1px solid rgba(11,27,51,.08);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--sun-gold),var(--sun-orange));
  opacity:0;transition:opacity .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,106,0,.32)}
.card:hover::before{opacity:1}
.stat{
  display:flex;flex-direction:column;gap:6px;
  padding:22px 24px;border-radius:var(--radius-m);
  background:var(--paper);border:1px solid rgba(11,27,51,.08);
}
.stat-value{
  font-family:var(--font-mono);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(28px,4vw,40px);line-height:1.15;color:var(--navy);
}
.stat-label{font-size:14px;color:var(--slate)}

/* ---------- 10. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}

/* ---------- 11. 图像容器（供页面阶段放图） ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);
  background:var(--navy-2);
  aspect-ratio:16/10;
  isolation:isolate;
}
.media-frame > img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(152deg,rgba(255,176,32,.34),rgba(11,27,51,.70));
  mix-blend-mode:multiply;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:16px 20px;color:var(--sand);font-size:14px;line-height:1.6;
}

/* ---------- 12. 图例与标签 ---------- */
.legend{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13.5px;color:var(--slate)}
.legend-item{display:inline-flex;align-items:center;gap:8px}
.legend-swatch{width:14px;height:14px;border-radius:4px;background:var(--sun-orange);box-shadow:0 0 0 1px rgba(11,27,51,.12)}
.legend-swatch--gold{background:var(--sun-gold)}
.legend-swatch--navy{background:var(--navy-2)}
.legend-swatch--cyan{background:var(--cyan)}
.legend-swatch--sand{background:var(--sun-pale)}
.tag{
  display:inline-flex;align-items:center;gap:6px;min-height:30px;padding:0 12px;
  border-radius:var(--radius-pill);background:var(--sun-pale);
  color:#8A3B00;font-size:13px;font-weight:600;
}
.tag--navy{background:var(--navy);color:var(--sand)}
.tag--cyan{background:var(--navy-2);color:var(--cyan);font-family:var(--font-mono)}

/* ---------- 13. 筛选胶囊 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-chip{
  display:inline-flex;align-items:center;min-height:44px;padding:0 18px;
  border-radius:var(--radius-pill);border:1px solid rgba(11,27,51,.16);
  background:var(--paper);color:var(--navy);font-size:14px;font-weight:600;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.filter-chip:hover{border-color:var(--sun-orange);color:var(--sun-orange);transform:translateY(-1px)}
.filter-chip[aria-pressed="true"]{
  background:linear-gradient(135deg,var(--sun-orange),var(--sun-gold));
  border-color:transparent;color:var(--ink);
}

/* ---------- 14. 日冕折叠面板 ---------- */
.corona-panel{
  overflow:hidden;border-radius:var(--radius-m);
  background:var(--sun-pale);border:1px solid rgba(255,106,0,.2);
}
.corona-panel > summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:56px;padding:16px 22px;cursor:pointer;
  font-weight:700;color:var(--navy);list-style:none;
}
.corona-panel > summary::-webkit-details-marker{display:none}
.corona-panel > summary::after{
  content:"＋";flex:0 0 auto;font-family:var(--font-mono);font-weight:700;color:var(--sun-orange);
}
.corona-panel[open] > summary::after{content:"－"}
.corona-panel__body{padding:0 22px 22px;background:var(--paper);font-size:16px;color:var(--navy)}

/* ---------- 15. 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-family:var(--font-mono);font-size:13px;color:var(--slate)}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li:not(:last-child)::after{content:"/";margin:0 6px;color:rgba(90,107,124,.5)}
.crumbs a{transition:color .16s var(--ease)}
.crumbs a:hover{color:var(--sun-orange)}
.crumbs [aria-current="page"]{color:var(--navy);font-weight:600}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1080px){
  .nav-link{padding:0 12px;font-size:14px}
  .cta-capsule{padding:0 16px;font-size:14px}
  .footer-top{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .site-header{padding:12px 0}
  .header-shell{flex-wrap:wrap;width:calc(100% - 24px);gap:8px}
  .brand-island{flex:0 0 auto;padding:8px 14px 8px 9px}
  .header-actions{margin-left:auto}
  .nav-toggle{display:inline-flex}
  .nav-island{
    display:none;order:3;flex:0 0 100%;margin:6px 0 0;
    border-radius:24px;padding:10px;box-shadow:0 16px 32px rgba(11,27,51,.26);
  }
  .site-header[data-open]{background:rgba(246,241,231,.96);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
  .site-header[data-open] .nav-island{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{
    flex-direction:column;align-items:flex-start;justify-content:center;gap:2px;
    min-height:58px;padding:10px 16px;border-radius:16px;
  }
  .nav-tip{
    position:static;opacity:1;visibility:visible;transform:none;
    background:none;box-shadow:none;padding:0;white-space:normal;
    color:rgba(246,241,231,.58);font-size:12.5px;
  }
  .nav-link[aria-current="page"] .nav-tip{color:rgba(6,18,31,.7)}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .lede,.section-head p{max-width:60ch}
}
@media (max-width:640px){
  body{font-size:16px}
  .brand-sub{display:none}
  .cta-capsule{padding:0 14px;font-size:13.5px;min-height:44px}
  .cta-capsule::after{display:none}
  .nav-toggle{padding:0 14px;min-height:44px}
  .footer-grid{grid-template-columns:1fr}
  .footer-meta{flex-direction:column;align-items:flex-start}
  .footer-status{max-width:none}
}
@media (max-width:420px){
  .nav-toggle-text{display:none}
}

/* ---------- 17. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover,.btn:hover,.cta-capsule:hover,.brand-island:hover,.back-top:hover,.filter-chip:hover{transform:none}
}