/* =========================================================
   辉煌品牌 · /assets/site.css
   共享层：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,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
summary{list-style:none}
summary::-webkit-details-marker{display:none}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B0E12;
  --night:#101A2B;
  --slate:#1B2630;
  --line:#3A4650;
  --gold:#E08A2E;
  --amber:#F2C05B;
  --copper:#C25A1E;
  --teal:#4E8CA0;
  --paper:#F4EFE6;
  --mist:#98A4AE;
  --note:#E9E2D4;
  --ink-text:#1B2630;
  --line-soft:rgba(58,70,80,.55);
  --font-display:"Source Han Sans SC Heavy","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:76px;
  --measure:68ch;
}

/* ---------- 3. 基础与中文排版 ---------- */
body{
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.14;
}
h1{font-size:clamp(34px,6vw,72px)}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:clamp(20px,2.2vw,24px);line-height:1.35;letter-spacing:-.01em}
h4{font-size:18px;line-height:1.4}
p{max-width:var(--measure)}
strong{font-weight:800;color:var(--paper)}
::selection{background:var(--gold);color:#160D04}
#main-content{scroll-margin-top:96px}

/* ---------- 4. 可访问性 ---------- */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:90;
  padding:11px 18px;
  background:var(--gold);color:#160D04;
  font-size:14px;font-weight:800;letter-spacing:.08em;
  transition:top .16s ease;
}
.skip-link:focus{top:12px}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 5. 布局工具 ---------- */
.wrap{
  width:100%;max-width:1240px;margin-inline:auto;
  padding-inline:clamp(20px,5vw,56px);
}
.section{padding:clamp(56px,8vw,110px) 0}
.section--tight{padding:clamp(36px,5vw,64px) 0}
.section-head{display:flex;flex-direction:column;gap:14px;max-width:var(--measure);margin-bottom:clamp(28px,4vw,52px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:11px;font-weight:700;letter-spacing:.24em;color:var(--gold);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--copper)}
.lead{font-size:clamp(16px,1.6vw,19px);line-height:1.85;color:var(--mist);max-width:60ch}
.prose{display:flex;flex-direction:column;gap:18px;max-width:var(--measure)}
.prose p{color:#CFD6DC}
.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-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.offset-down{margin-top:clamp(18px,3vw,44px)}
.stack{display:flex;flex-direction:column;gap:16px}
.row{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.rule{height:1px;background:var(--line);border:0;margin:0}
.muted{color:var(--mist)}
.gold{color:var(--gold)}
.amber{color:var(--amber)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.vertical-label{
  writing-mode:vertical-rl;letter-spacing:.18em;
  font-size:11px;color:var(--mist);
}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(11,14,18,.97),rgba(11,14,18,.88));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(24px,6vw,110px);
  max-width:1440px;margin-inline:auto;min-height:var(--header-h);
  padding:12px clamp(20px,4vw,48px);
}
.brand-block{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand-link{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.brand-mark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(19px,2vw,23px);letter-spacing:.02em;color:var(--paper);
  transition:color .12s ease;
}
.brand-link:hover .brand-mark{color:var(--amber)}
.brand-sub{font-size:12px;letter-spacing:.18em;color:var(--mist)}
.brand-icp{font-size:11px;letter-spacing:.08em;color:#5F6B74}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:10px 14px;border:1px solid var(--line);
  color:var(--paper);font-size:12px;font-weight:700;letter-spacing:.18em;
  transition:border-color .12s ease,color .12s ease;
}
.nav-toggle:hover{border-color:var(--copper);color:var(--amber)}
.nav-toggle-bars{display:grid;gap:4px;width:18px}
.nav-toggle-bar{display:block;height:1px;background:currentColor;transition:transform .18s ease,opacity .18s ease}
.site-header[data-open] .nav-toggle-bar:nth-of-type(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:nth-of-type(2){opacity:0}
.site-header[data-open] .nav-toggle-bar:nth-of-type(3){transform:translateY(-5px) rotate(-45deg)}
.site-header[data-open] .nav-toggle{border-color:var(--gold);color:var(--amber)}

.site-nav{display:flex;align-items:center;gap:clamp(12px,2.2vw,28px);min-width:0}
.nav-list{display:flex;align-items:stretch;gap:0}
.nav-list>li+li{border-left:1px solid var(--line-soft)}
.nav-list a{position:relative;display:grid;gap:1px;padding:9px 14px}
.nav-num{
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.18em;color:var(--mist);
  transition:color .12s ease;
}
.nav-text{
  font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--paper);
  transition:color .12s ease;white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .12s ease;
}
.nav-list a:hover .nav-num,
.nav-list a:focus-visible .nav-num{color:var(--amber)}
.nav-list a:hover .nav-text,
.nav-list a:focus-visible .nav-text{color:var(--amber)}
.nav-list a:hover::after,
.nav-list a:focus-visible::after{transform:scaleX(1)}
.nav-list a[aria-current="page"] .nav-num{color:var(--gold)}
.nav-list a[aria-current="page"] .nav-text{color:var(--amber)}
.nav-list a[aria-current="page"]::after{transform:scaleX(1);background:var(--amber)}
.nav-quick{
  display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;
  padding:9px 16px;border:1px solid var(--copper);color:var(--amber);
  font-size:12px;font-weight:700;letter-spacing:.18em;white-space:nowrap;
  transition:background .12s ease,border-color .12s ease,color .12s ease;
}
.nav-quick::before{content:"";width:14px;height:1px;background:currentColor}
.nav-quick:hover{background:var(--gold);border-color:var(--gold);color:#160D04}
.door-gap{
  position:absolute;left:0;bottom:-1px;height:1px;width:8%;
  background:linear-gradient(90deg,var(--copper),var(--gold),var(--amber));
  box-shadow:0 0 12px rgba(242,192,91,.45);
  transition:width .3s ease;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{background:var(--night);border-top:1px solid var(--line)}
.footer-inner{
  max-width:1240px;margin-inline:auto;
  padding:clamp(36px,5vw,64px) clamp(20px,4vw,48px) 28px;
  display:grid;grid-template-columns:1.5fr 1fr 1.3fr 1fr;
  gap:clamp(24px,4vw,56px);
}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-mark{font-family:var(--font-display);font-weight:900;font-size:22px;letter-spacing:.02em;color:var(--paper)}
.footer-tagline{font-size:12px;letter-spacing:.18em;color:var(--mist)}
.footer-blurb{font-size:14px;line-height:1.85;color:var(--mist);max-width:34ch}
.footer-col{display:flex;flex-direction:column;gap:16px}
.footer-col-title{font-size:11px;font-weight:800;letter-spacing:.22em;color:var(--gold)}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  font-size:15px;color:var(--paper);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .12s ease,border-color .12s ease;
}
.footer-list a:hover{color:var(--amber);border-color:var(--amber)}
.footer-items{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.75;color:var(--mist)}
.footer-items li{position:relative;padding-left:15px}
.footer-items li::before{content:"";position:absolute;left:0;top:.8em;width:6px;height:1px;background:var(--copper)}
.footer-bar{
  max-width:1240px;margin-inline:auto;
  padding:16px clamp(20px,4vw,48px) 28px;
  border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--mist);
}
.footer-legal{letter-spacing:.06em;max-width:none}
.footer-note{max-width:46ch;color:#7D8892;line-height:1.7}

/* ---------- 8. 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;min-height:46px;
  padding:13px 26px;border:1px solid var(--line);background:transparent;
  font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--paper);
  transition:background .12s ease,color .12s ease,border-color .12s ease;
}
.btn:hover{border-color:var(--amber);color:var(--amber)}
.btn-primary{background:var(--gold);border-color:var(--gold);color:#160D04}
.btn-primary:hover{background:var(--amber);border-color:var(--amber);color:#160D04}
.btn-ghost{border-color:var(--copper);color:var(--amber)}
.btn-ghost:hover{background:rgba(194,90,30,.16);border-color:var(--amber);color:var(--amber)}

.breadcrumbs{padding:18px 0;border-bottom:1px solid var(--line-soft)}
.crumb-list{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;letter-spacing:.1em;color:var(--mist)}
.crumb-list li{display:flex;align-items:center;gap:10px}
.crumb-list li+li::before{content:"/";color:var(--line)}
.crumb-list a:hover{color:var(--amber)}
.crumb-list [aria-current="page"]{color:var(--paper)}

.page-head{
  padding:clamp(44px,7vw,96px) 0 clamp(26px,4vw,48px);
  border-bottom:1px solid var(--line-soft);
  display:flex;flex-direction:column;gap:16px;
}
.page-title{max-width:22ch}
.page-sub{font-size:clamp(15px,1.5vw,18px);line-height:1.85;color:var(--mist);max-width:60ch}

.panel{
  position:relative;background:var(--slate);border:1px solid var(--line);
  padding:clamp(20px,3vw,32px);
}
.panel--night{background:var(--night)}
.panel--paper{background:var(--note);border-color:#C9BFA8;color:var(--ink-text)}
.panel--paper p,.panel--paper h3,.panel--paper h4,.panel--paper .panel-title{color:var(--ink-text)}
.panel--paper .muted{color:#5C666F}
.panel-title{
  font-family:var(--font-display);font-weight:900;
  font-size:20px;letter-spacing:-.01em;color:var(--paper);margin-bottom:10px;
}

.note{
  background:var(--note);color:var(--ink-text);
  border-left:4px solid var(--copper);
  padding:16px 20px;font-size:14px;line-height:1.8;max-width:56ch;
}
.note-title{display:block;margin-bottom:6px;font-size:13px;font-weight:800;letter-spacing:.14em;color:#8A4413}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);background:rgba(27,38,48,.6);
  font-size:12px;letter-spacing:.1em;color:var(--mist);
}
.tag--gold{border-color:var(--gold);color:var(--amber)}
.tag--copper{border-color:var(--copper);color:#E39A66}

.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.chip-group{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:7px 14px;border:1px solid var(--line);background:transparent;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--mist);
  transition:background .12s ease,color .12s ease,border-color .12s ease;
}
.chip:hover{border-color:var(--copper);color:var(--amber)}
.chip[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:#160D04}

.accordion{border:1px solid var(--line);background:var(--slate)}
.accordion+.accordion{border-top:0}
.accordion>summary{
  display:flex;align-items:center;gap:14px;
  padding:16px clamp(16px,2.4vw,24px);
  font-size:16px;font-weight:700;color:var(--paper);cursor:pointer;
  transition:color .12s ease;
}
.accordion>summary::-webkit-details-marker{display:none}
.accordion>summary::after{
  content:"";margin-left:auto;width:9px;height:9px;flex:0 0 auto;
  border-right:1px solid var(--gold);border-bottom:1px solid var(--gold);
  transform:rotate(45deg);transition:transform .18s ease;
}
.accordion[open]>summary{color:var(--amber)}
.accordion[open]>summary::after{transform:rotate(-135deg)}
.accordion-body{
  padding:0 clamp(16px,2.4vw,24px) 20px;
  font-size:15px;line-height:1.85;color:var(--mist);
}

.steps{display:flex;flex-direction:column}
.step{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:20px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step-num{font-family:var(--font-display);font-weight:900;font-size:26px;line-height:1.1;color:var(--gold)}

.doorplate{display:inline-flex;flex-direction:column;gap:4px}
.num-block{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(64px,12vw,180px);line-height:.85;letter-spacing:-.04em;
  color:var(--gold);transition:color .16s ease;
}
.doorplate:hover .num-block{color:var(--amber)}
.num-label{font-size:11px;letter-spacing:.2em;color:var(--mist)}

.media{
  position:relative;display:block;width:100%;overflow:hidden;
  background:var(--slate);border:1px solid var(--line);
}
.media>img{width:100%;height:100%;object-fit:cover;filter:saturate(.95) contrast(1.03)}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--21x9{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--glow::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(100deg,transparent 38%,rgba(242,192,91,.22) 50%,transparent 62%);
}
.media--glow::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  border:1px solid rgba(224,138,46,.35);
}
.media-caption{margin-top:10px;font-size:12px;letter-spacing:.06em;color:var(--mist)}

/* ---------- 9. 显现 ---------- */
.js-ready [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.js-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1024px){
  :root{--header-h:68px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    max-height:calc(100vh - var(--header-h));overflow:auto;
    padding:8px clamp(20px,4vw,48px) 20px;
    background:#0D1117;border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.45);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);
    transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
  }
  .site-header[data-open] .site-nav{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .nav-list{flex-direction:column}
  .nav-list>li+li{border-left:0;border-top:1px solid var(--line-soft)}
  .nav-list a{grid-template-columns:52px 1fr;align-items:center;padding:14px 4px}
  .nav-list a::after{display:none}
  .nav-num{font-size:12px}
  .nav-text{font-size:17px}
  .nav-quick{margin-top:16px;justify-content:center}
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-blurb{max-width:44ch}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.85}
  .header-inner{gap:16px;padding:10px 18px}
  .brand-icp{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .footer-bar{flex-direction:column;align-items:flex-start}
  .step{grid-template-columns:44px 1fr;gap:12px}
  .btn{width:100%;justify-content:center}
  .nav-quick{width:100%}
}

/* ---------- 11. 减弱动效 ---------- */
@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-ready [data-reveal]{opacity:1;transform:none}
  .door-gap{transition:none}
}