/* 辉煌CN官方 · 共享样式 /assets/site.css */

/* ---------- 1. 变量 ---------- */
:root{
  --indigo-950:#080D22;
  --indigo-900:#0E1638;
  --indigo-700:#1B2A5B;
  --indigo-500:#2F4585;
  --gold-500:#C9A227;
  --gold-300:#E7CD7A;
  --vermilion-600:#B7332B;
  --gray-050:#F3F4F7;
  --gray-300:#C7CBD6;
  --graphite-700:#39404F;
  --cyan-400:#4E93B0;

  --cut:18px;
  --edge:rgba(231,205,122,.22);
  --hair:rgba(199,203,214,.16);
  --ink-soft:rgba(243,244,247,.84);

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

  --wrap:1180px;
  --wrap-wide:1440px;
  --header-h:70px;
}

/* ---------- 2. Reset 与基础排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  background-color:var(--indigo-950);
  background-image:
    repeating-linear-gradient(90deg,rgba(231,205,122,.035) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(0deg,rgba(231,205,122,.028) 0 1px,transparent 1px 96px);
  color:var(--gray-050);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-family:var(--font-head);font-weight:800;letter-spacing:-.01em;line-height:1.15}
p{margin:0}
::selection{background:var(--gold-500);color:var(--indigo-950)}
:focus-visible{outline:2px solid var(--gold-300);outline-offset:3px}
.mono{font-family:var(--font-mono);font-weight:600}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap--wide{max-width:var(--wrap-wide)}
.offset-top{padding-top:var(--header-h)}
.section{padding:64px 0}
.section--tight{padding:40px 0}
.flow>*+*{margin-top:20px}
.rule-slant{height:1px;border:0;margin:0;background:linear-gradient(90deg,rgba(201,162,39,.7),rgba(183,51,43,.4) 42%,transparent);transform:skewY(-1.2deg)}

/* ---------- 3. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:120;
  padding:10px 18px;
  background:var(--gold-500);color:var(--indigo-950);
  font-family:var(--font-head);font-weight:800;font-size:14px;text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- 4. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  color:var(--gray-050);
  background:linear-gradient(180deg,rgba(8,13,34,.88) 0%,rgba(8,13,34,.46) 64%,rgba(8,13,34,0) 100%);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header[data-scrolled]{
  background:var(--indigo-950);
  border-bottom-color:rgba(201,162,39,.42);
  box-shadow:0 20px 44px -30px rgba(0,0,0,.95);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:var(--header-h)}

.brand{display:flex;align-items:center;gap:12px;padding:8px 0;text-decoration:none}
.brand-mark{
  flex:none;width:38px;height:38px;display:grid;place-items:center;
  font-family:var(--font-head);font-weight:900;font-size:19px;color:var(--indigo-950);
  background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-family:var(--font-head);font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-note{font-size:11.5px;letter-spacing:.16em;color:var(--gray-300)}
.brand-version{
  margin-left:4px;padding:2px 8px;
  font-size:11px;letter-spacing:.08em;color:var(--gold-300);
  border:1px solid rgba(231,205,122,.45);
}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;color:var(--gold-300);
  border:1px solid var(--edge);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}
.nav-toggle-bars{display:grid;gap:4px;width:18px}
.nav-toggle-bars span{display:block;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.nav-toggle-label{font-size:13px;letter-spacing:.14em}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav{display:flex;align-items:center;gap:8px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-block;padding:12px 13px;
  font-size:15px;letter-spacing:.03em;color:var(--ink-soft);text-decoration:none;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:7px;height:2px;
  background:var(--gold-500);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--gold-300)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--gold-300);font-weight:700}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold-300)}

.nav-aside{display:flex;align-items:center;gap:10px;margin-left:10px;padding-left:14px;border-left:1px solid var(--hair)}
.nav-mini{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--gray-300);text-decoration:none}
.nav-mini:hover{color:var(--gold-300)}
.nav-divider{display:block;width:1px;height:12px;background:var(--hair)}
.nav-cta{margin-left:6px}

.header-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(199,203,214,.14);overflow:hidden}
.header-progress-bar{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left;background:linear-gradient(90deg,var(--gold-500),var(--vermilion-600))}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-family:var(--font-head);font-size:14px;font-weight:700;letter-spacing:.06em;text-decoration:none;
  border:1px solid transparent;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--gold{background:var(--gold-500);color:var(--indigo-950)}
.btn--gold:hover{background:var(--gold-300)}
.btn--ghost{border-color:var(--edge);color:var(--gold-300);background:rgba(11,17,42,.42)}
.btn--ghost:hover{background:var(--indigo-700);color:var(--gray-050)}
.btn--sm{padding:8px 14px;font-size:13px}

/* ---------- 6. 通用内容基元 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.24em;color:var(--gold-300);
}
.eyebrow::after{content:"";width:44px;height:1px;background:linear-gradient(90deg,var(--gold-500),transparent)}
.lead{max-width:38em;font-size:19px;line-height:1.85;color:var(--gray-050)}
.prose{max-width:44em;font-size:16px;line-height:1.8;color:var(--ink-soft)}
.prose>*+*{margin-top:16px}
.prose h2{margin-top:34px;font-size:28px;color:var(--gray-050)}
.prose h3{margin-top:26px;font-size:20px;color:var(--gray-050)}
.prose strong{color:var(--gold-300)}

.chip{display:inline-block;padding:4px 12px;font-size:12.5px;letter-spacing:.06em;color:var(--gold-300);border:1px solid rgba(231,205,122,.5);border-radius:999px}
.chip--solid{background:var(--gold-500);color:var(--indigo-950);border-color:var(--gold-500)}
.chip--red{color:#F0B7B2;border-color:rgba(183,51,43,.6)}
.chip--cyan{color:#9CC7D8;border-color:rgba(78,147,176,.55)}

.grid{display:grid;gap:28px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}

.panel{
  position:relative;
  padding:28px 28px 30px;
  background:var(--indigo-700);
  border:1px solid var(--edge);
  filter:drop-shadow(0 20px 30px rgba(0,0,0,.5));
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  transition:clip-path .2s ease;
}
.panel::before{
  content:"";position:absolute;top:0;bottom:0;left:0;width:3px;
  background:var(--gold-500);transform:scaleY(0);transform-origin:top;transition:transform .22s ease;
}
.panel:hover{clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%)}
.panel:hover::before{transform:scaleY(1)}
.panel--light{
  background:var(--gray-050);color:var(--graphite-700);
  border-color:rgba(57,64,79,.16);
  clip-path:polygon(var(--cut) 0,100% 0,100% 100%,0 100%,0 var(--cut));
}
.panel--light:hover{clip-path:polygon(22px 0,100% 0,100% 100%,0 100%,0 22px)}
.panel--light .panel-title{color:var(--indigo-900)}
.panel--light .panel-body{color:var(--graphite-700)}
.panel-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:12px}
.panel-num{font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--gold-300);border:1px solid rgba(231,205,122,.4);padding:3px 8px}
.panel-title{font-size:26px;font-weight:800;color:var(--gray-050)}
.panel-body{max-width:44em;font-size:15.5px;line-height:1.8;color:var(--ink-soft)}

.band{
  position:relative;overflow:hidden;
  padding:44px 0;
  background:linear-gradient(90deg,var(--indigo-900) 0%,var(--indigo-700) 46%,var(--indigo-900) 100%);
  border-top:1px solid var(--edge);border-bottom:1px solid var(--edge);
}
.band::before{
  content:"";position:absolute;top:-40%;right:-6%;width:52%;height:180%;
  background:repeating-linear-gradient(115deg,rgba(231,205,122,.08) 0 1px,transparent 1px 22px);
  transform:skewX(-12deg);pointer-events:none;
}
.band--light{background:var(--gray-050);color:var(--graphite-700);border-color:rgba(57,64,79,.16)}
.band--light::before{background:repeating-linear-gradient(115deg,rgba(27,42,91,.07) 0 1px,transparent 1px 22px)}

.breadcrumb{padding:14px 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--gray-300)}
.breadcrumb-item{display:flex;align-items:center;gap:8px}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:rgba(201,162,39,.6)}
.breadcrumb-link{color:var(--gray-300);text-decoration:none}
.breadcrumb-link:hover{color:var(--gold-300)}
.breadcrumb-current{color:var(--gold-300)}

/* ---------- 7. 图片容器基础规则 ---------- */
.img-frame{
  position:relative;display:block;margin:0;overflow:hidden;
  background:linear-gradient(150deg,var(--indigo-700),var(--indigo-950) 72%);
  border:1px solid var(--edge);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
}
.img-frame::after{content:"";position:absolute;top:0;left:0;width:46px;height:2px;background:var(--gold-500)}
.img-frame>img{width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame__placeholder{
  display:grid;place-items:center;width:100%;height:100%;padding:24px;
  text-align:center;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;
  color:rgba(199,203,214,.72);
}
.img-frame__caption{
  padding:10px 14px;border-top:1px solid var(--hair);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--gray-300);
}

/* ---------- 8. 侧向索引与分段切换 ---------- */
.side-index{
  position:fixed;right:8px;top:50%;transform:translateY(-50%);z-index:70;
  display:flex;flex-direction:column;gap:16px;
}
.side-index__item{
  writing-mode:vertical-rl;text-orientation:mixed;
  padding:6px 2px;border-right:2px solid transparent;
  font-size:12px;letter-spacing:.3em;color:var(--gray-300);text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.side-index__item:hover{color:var(--gold-300)}
.side-index__item[aria-current="true"]{color:var(--gold-300);border-right-color:var(--gold-500)}

.seg{display:flex;flex-wrap:wrap;gap:4px;border-bottom:1px solid var(--hair)}
.seg-btn{
  position:relative;padding:10px 16px;
  font-size:14.5px;font-weight:600;letter-spacing:.04em;color:var(--gray-300);
  transition:color .18s ease;
}
.seg-btn::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  background:var(--gold-500);transform:scaleX(0);transition:transform .18s ease;
}
.seg-btn:hover{color:var(--gray-050)}
.seg-btn[aria-selected="true"]{color:var(--gold-300)}
.seg-btn[aria-selected="true"]::after{transform:scaleX(1)}
.seg-panel{padding:22px 0 0}
.seg-panel[hidden]{display:none}

/* ---------- 9. 入场显隐 ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .24s ease-out,transform .24s ease-out}
[data-reveal][data-visible]{opacity:1;transform:none}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:72px;
  color:var(--gray-300);
  background:var(--indigo-950);
  border-top:1px solid rgba(201,162,39,.35);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(231,205,122,.045) 0 1px,transparent 1px 72px),
    radial-gradient(120% 90% at 10% 0%,rgba(47,69,133,.62),transparent 62%),
    radial-gradient(90% 70% at 96% 100%,rgba(183,51,43,.18),transparent 60%);
}
.footer-decor{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.footer-decor-line{
  position:absolute;top:0;left:-6%;width:112%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,162,39,.6),rgba(183,51,43,.35),transparent);
  transform:rotate(-.6deg);transform-origin:left center;
}
.footer-inner{position:relative;z-index:1;padding:56px 24px 28px}

.footer-top{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px 40px;
  padding-bottom:26px;border-bottom:1px solid var(--hair);
}
.footer-brand{display:flex;align-items:flex-start;gap:14px;max-width:600px}
.footer-mark{
  flex:none;width:44px;height:44px;display:grid;place-items:center;
  font-family:var(--font-head);font-weight:900;font-size:21px;color:var(--gold-300);
  border:1px solid rgba(231,205,122,.5);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);
}
.footer-brand-text{min-width:0}
.footer-brand-name{font-family:var(--font-head);font-size:20px;font-weight:800;letter-spacing:.02em;color:var(--gray-050)}
.footer-brand-note{margin-top:6px;font-size:14px;line-height:1.7;color:var(--gray-300)}
.footer-meta{font-size:12px;letter-spacing:.14em;color:var(--gold-300)}

.footer-cols{display:grid;grid-template-columns:1.05fr .78fr 1.2fr;gap:38px;padding:34px 0 30px}
.footer-col{min-width:0}
.footer-col-title{
  display:flex;align-items:center;gap:10px;
  padding-left:12px;border-left:3px solid var(--gold-500);
  font-size:16px;font-weight:800;line-height:1.2;color:var(--gray-050);
}
.footer-col-num{font-size:11px;letter-spacing:.1em;color:var(--gold-300)}
.footer-col-desc{margin-top:12px;font-size:13.5px;line-height:1.7;color:var(--gray-300)}

.adapt-list{margin-top:14px;border-top:1px solid var(--hair)}
.adapt-item{padding:10px 0;border-bottom:1px solid var(--hair)}
.adapt-code{display:inline-block;font-size:11.5px;letter-spacing:.08em;color:var(--cyan-400)}
.adapt-name{display:block;margin-top:3px;font-size:14px;color:var(--gray-050)}
.adapt-more{
  display:block;max-height:0;opacity:0;overflow:hidden;
  font-size:12.5px;line-height:1.6;color:var(--gray-300);
  transition:max-height .22s ease,opacity .22s ease,margin-top .22s ease;
}
.adapt-item:hover .adapt-more,.adapt-item:focus-within .adapt-more{max-height:6em;opacity:1;margin-top:6px}

.footer-links{display:grid;gap:2px;margin-top:14px}
.footer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 0;border-bottom:1px solid var(--hair);
  font-size:14.5px;color:var(--gray-050);text-decoration:none;
  transition:color .18s ease,padding-left .18s ease;
}
.footer-link::after{content:"→";font-size:12px;color:var(--gold-300)}
.footer-link:hover{color:var(--gold-300);padding-left:6px}

.contact-list{display:grid;gap:12px;margin-top:14px}
.contact-line{display:grid;gap:4px;padding-bottom:10px;border-bottom:1px solid var(--hair)}
.contact-label{font-size:11.5px;letter-spacing:.14em;color:var(--gold-300)}
.contact-value{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.contact-text{font-size:14px;line-height:1.6;color:var(--gray-050);word-break:break-word}
.contact-note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--gray-300)}

.copy-btn{
  flex:none;padding:4px 10px;
  font-size:12px;letter-spacing:.06em;color:var(--gold-300);
  border:1px solid rgba(231,205,122,.42);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.copy-btn:hover{background:var(--gold-500);color:var(--indigo-950)}
.copy-btn[data-copied]{background:var(--gold-300);color:var(--indigo-950);border-color:var(--gold-300)}
.copy-btn--ghost{border-color:var(--hair);color:var(--gray-300)}
.copy-btn--ghost:hover{background:var(--gold-500);color:var(--indigo-950);border-color:var(--gold-500)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;
  padding-top:22px;border-top:1px solid rgba(201,162,39,.28);
  font-size:13px;
}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 22px}
.legal-link{color:var(--gray-300);text-decoration:none}
.legal-link:hover{color:var(--gold-300)}
.footer-icp{display:flex;align-items:center;gap:10px}
.footer-icp .mono{letter-spacing:.06em;color:var(--gray-300)}
.footer-copy{margin-left:auto;color:rgba(199,203,214,.75)}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1180px){
  .nav-aside{display:none}
  .side-index{display:none}
}
@media (max-width:980px){
  .grid--3,.grid--8-4{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    padding:18px 22px 28px;
    background:var(--indigo-950);
    border-top:1px solid rgba(201,162,39,.28);
    border-bottom:1px solid rgba(201,162,39,.42);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
  }
  .site-nav[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--hair)}
  .nav-link{display:block;padding:15px 4px;font-size:17px}
  .nav-link::after{left:4px;right:auto;width:26px;bottom:10px}
  .nav-aside{display:flex;margin:14px 0 4px;padding:0;gap:14px;border-left:0}
  .nav-cta{margin:8px 0 0}
  .section{padding:48px 0}
}
@media (max-width:680px){
  .grid--2{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr}
  .footer-copy{margin-left:0;width:100%}
  .panel{padding:22px 20px 24px}
  .panel-title{font-size:22px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .brand-note,.brand-version{display:none}
}

/* ---------- 12. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-reveal]{opacity:1;transform:none}
}