*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure{margin:0}
img,svg,picture,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse}
[hidden]{display:none !important}

:root{
  --ink:#0B0D10;
  --ink-2:#101A26;
  --gold:#D4A24A;
  --gold-soft:#F2D492;
  --amber:#F08A3C;
  --silver:#C7CDD4;
  --aqua:#3FE0D0;
  --paper:#F6F4EF;
  --brut:#2A2F36;
  --white:#FFFFFF;

  --shell:1240px;
  --gutter:24px;
  --radius:2px;
  --header-h:72px;

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}

body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--silver);
  background:var(--ink);
  min-height:100vh;
}

h1,h2,h3,h4{color:var(--white);font-weight:900;line-height:1.16;letter-spacing:.06em}
h1{font-size:clamp(2.1rem,5.4vw,4.2rem)}
h2{font-size:clamp(1.5rem,3vw,2.35rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem);letter-spacing:.04em}
strong{color:var(--white);font-weight:800}
em{font-style:normal;color:var(--gold-soft)}
code,.mono{font-family:var(--font-mono);letter-spacing:.02em}

:focus-visible{outline:2px solid var(--aqua);outline-offset:3px;border-radius:2px}

/* ---------- 布局容器 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.34em;text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);display:block}

.grid{display:grid;gap:24px}
.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))}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:-120px;z-index:200;
  display:inline-block;padding:10px 18px;
  background:var(--gold);color:var(--ink);
  font-weight:900;font-size:14px;letter-spacing:.08em;
  border:2px solid var(--gold-soft);box-shadow:4px 4px 0 var(--brut);
  transition:top .2s ease;
}
.skip-link:focus{top:16px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding-block:14px;
  background:linear-gradient(180deg,rgba(11,13,16,.92),rgba(11,13,16,.45) 70%,rgba(11,13,16,0));
  border-bottom:1px solid transparent;
  transition:background .28s ease,padding .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header[data-scrolled]{
  padding-block:8px;
  background:rgba(11,13,16,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--brut);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:48px}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  position:relative;width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border:2px solid var(--gold);
  background:linear-gradient(150deg,rgba(212,162,74,.30),rgba(63,224,208,.10));
  box-shadow:3px 3px 0 var(--brut);
}
.brand-mark::before{content:"";width:11px;height:11px;background:var(--gold);transform:rotate(45deg)}
.brand-copy{display:flex;flex-direction:column;gap:1px}
.brand-name{display:block;font-size:17px;font-weight:900;letter-spacing:.16em;color:var(--white);line-height:1.2}
.brand-tag{display:block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.36em;color:var(--gold)}

/* 胶囊导航 */
.nav-capsule{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{
  display:flex;align-items:center;gap:2px;padding:6px;
  border:1px solid var(--brut);border-radius:999px;
  background:rgba(16,26,38,.78);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:0 12px 32px rgba(0,0,0,.42);
}
.nav-list a{
  display:block;padding:9px 17px;border-radius:999px;
  font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--silver);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-list a:hover{color:var(--white);background:rgba(212,162,74,.15)}
.nav-list a[aria-current="page"]{
  color:var(--ink);background:var(--gold);
  box-shadow:inset 0 0 0 1px var(--gold-soft);
}
.nav-list a[aria-current="page"]:hover{color:var(--ink);background:var(--gold-soft)}

/* 右侧操作区 */
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;
  border:2px solid var(--brut);border-radius:var(--radius);
  background:rgba(16,26,38,.78);color:var(--gold);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.icon-btn:hover{border-color:var(--gold);color:var(--gold-soft);background:rgba(212,162,74,.12)}
.nav-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;
  border:2px solid var(--brut);border-radius:var(--radius);
  background:rgba(16,26,38,.82);
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--gold);transition:transform .25s ease,opacity .2s ease}
.site-header[data-open] .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header[data-open] .nav-toggle span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border:2px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:900;letter-spacing:.1em;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn--gold{background:var(--gold);color:#191405;border-color:var(--gold-soft);box-shadow:4px 4px 0 var(--brut)}
.btn--gold:hover{background:var(--gold-soft);transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--brut)}
.btn--amber{background:var(--amber);color:#20120a;border-color:#ffb178;box-shadow:4px 4px 0 var(--brut)}
.btn--amber:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--brut)}
.btn--ghost{border-color:var(--brut);background:rgba(16,26,38,.72);color:var(--white)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft);background:rgba(212,162,74,.12)}
.header-cta{padding:10px 18px;font-size:13px}
.footer-cta{margin-top:18px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  background:
    radial-gradient(120% 90% at 12% -10%,rgba(212,162,74,.10),transparent 60%),
    radial-gradient(90% 70% at 92% 110%,rgba(63,224,208,.07),transparent 62%),
    var(--ink);
  border-top:2px solid var(--brut);
}
.site-footer::before{content:"";position:absolute;top:-2px;left:0;width:200px;height:2px;background:var(--gold)}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1.3fr 1.3fr .9fr;
  gap:40px;
  padding-block:clamp(44px,6vw,72px) clamp(32px,4vw,52px);
}
.footer-col{min-width:0}
.footer-brand .brand{margin-bottom:18px}
.footer-title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.28em;text-transform:uppercase;color:var(--gold);
  margin:0 0 18px;padding-bottom:10px;border-bottom:1px solid var(--brut);
}
.footer-text{font-size:14px;line-height:1.8;color:var(--silver);margin-bottom:10px;max-width:34ch}
.footer-text--mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:var(--gold-soft);word-break:break-all}
.footer-note{font-size:13px;letter-spacing:.06em;color:rgba(199,205,212,.72);margin-bottom:6px}
.footer-note--mono{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;color:rgba(212,162,74,.7)}
.footer-links{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.footer-links a{
  display:inline-block;font-size:14px;color:var(--silver);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.footer-links a:hover{color:var(--gold-soft);border-bottom-color:var(--gold)}
.footer-legal{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;
  padding-block:20px;
  border-top:1px solid var(--brut);
}
.footer-legal-line{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  color:rgba(199,205,212,.66);line-height:1.7;
}
.footer-legal-line a{color:rgba(199,205,212,.86);border-bottom:1px solid var(--brut)}
.footer-legal-line a:hover{color:var(--gold-soft);border-bottom-color:var(--gold)}
.footer-icp{color:var(--gold)}

/* ---------- 面包屑 / 正文 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:rgba(199,205,212,.6)}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--brut)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb [aria-current="page"]{color:var(--gold-soft)}

.prose{max-width:72ch;font-size:16.5px;line-height:1.85;color:var(--silver)}
.prose>*+*{margin-top:18px}
.prose h2{margin-top:44px;font-size:clamp(1.35rem,2.2vw,1.85rem)}
.prose h3{margin-top:32px}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:10px;padding-left:22px}
.prose ul li{list-style:none;position:relative}
.prose ul li::before{content:"";position:absolute;left:-18px;top:.72em;width:8px;height:2px;background:var(--gold)}
.prose ol{counter-reset:prose}
.prose ol li{list-style:decimal;counter-increment:prose;color:var(--silver)}
.prose strong{color:var(--gold-soft)}
.prose a{border-bottom:1px solid var(--gold);color:var(--gold-soft)}
.prose--paper{color:#33383f}
.prose--paper h2,.prose--paper h3,.prose--paper strong{color:var(--ink)}
.prose--paper a{color:#8a5f16}

/* ---------- 面板 / 标签 ---------- */
.panel{
  position:relative;
  padding:26px;
  background:var(--ink-2);
  border:2px solid var(--brut);
  box-shadow:8px 8px 0 rgba(0,0,0,.42);
}
.panel--flat{box-shadow:none;background:rgba(16,26,38,.55)}
.panel--gold{border-color:var(--gold);box-shadow:8px 8px 0 rgba(212,162,74,.22)}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--brut);background:rgba(16,26,38,.7);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--silver);
}
.tag{
  display:inline-block;padding:4px 10px;
  border:1px solid var(--gold);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--gold);
}
.tag--amber{border-color:var(--amber);color:var(--amber)}
.tag--aqua{border-color:var(--aqua);color:var(--aqua)}

/* ---------- 媒体容器（供页面阶段放置图像） ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  width:100%;
  border:2px solid var(--brut);
  background:
    linear-gradient(160deg,rgba(16,26,38,.96),rgba(11,13,16,.98) 55%,rgba(212,162,74,.16));
  box-shadow:8px 8px 0 rgba(0,0,0,.42);
}
.media-frame img,.media-frame picture>img{
  width:100%;height:100%;object-fit:cover;display:block;
  filter:saturate(.82) contrast(1.06);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(199,205,212,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(199,205,212,.10) 1px,transparent 1px);
  background-size:44px 44px;
  mix-blend-mode:screen;opacity:.55;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame--banner{aspect-ratio:21/9}

/* ---------- 主题筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-btn{
  padding:8px 16px;border-radius:999px;
  border:2px solid var(--brut);background:rgba(16,26,38,.72);
  font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--silver);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.filter-btn:hover{border-color:var(--gold);color:var(--gold-soft)}
.filter-btn.is-active{background:var(--aqua);border-color:var(--aqua);color:#06201e}
.filter-count{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--gold);margin-left:6px;
}
[data-tags].is-hidden{display:none !important}

/* ---------- 显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1.4fr 1.2fr 1.2fr;gap:32px}
  .footer-col:nth-child(4){grid-column:span 3}
  .footer-col:nth-child(4) .footer-links{flex-direction:row;flex-wrap:wrap;gap:18px}
}
@media (max-width:960px){
  :root{--gutter:20px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .brand-tag{display:none}
  .nav-capsule{
    position:fixed;
    top:76px;left:16px;right:16px;
    display:block;flex:none;
    z-index:90;
    opacity:0;visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .site-header[data-open] .nav-capsule{opacity:1;visibility:visible;transform:none}
  .nav-list{
    flex-direction:column;align-items:stretch;gap:4px;
    padding:12px;border-radius:6px;
    border:2px solid var(--brut);
    background:rgba(11,13,16,.97);
    box-shadow:8px 8px 0 rgba(42,47,54,.9);
    max-height:calc(100vh - 120px);
    overflow-y:auto;
  }
  .nav-list a{
    padding:14px 16px;border-radius:4px;font-size:16px;
    border-left:3px solid transparent;
  }
  .nav-list a:hover{background:rgba(212,162,74,.10)}
  .nav-list a[aria-current="page"]{
    background:rgba(212,162,74,.16);
    color:var(--gold);
    box-shadow:none;
    border-left-color:var(--gold);
  }
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .footer-col:nth-child(4){grid-column:span 2}
  .footer-col:nth-child(4) .footer-links{flex-direction:column;gap:10px}
  .footer-legal{justify-content:flex-start}
}
@media (max-width:640px){
  :root{--gutter:16px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .header-inner{gap:12px}
  .brand-name{font-size:15.5px;letter-spacing:.1em}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:nth-child(4){grid-column:auto}
  .footer-text{max-width:none}
  .panel{padding:20px;box-shadow:5px 5px 0 rgba(0,0,0,.42)}
  .media-frame{box-shadow:5px 5px 0 rgba(0,0,0,.42)}
}

@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]{opacity:1;transform:none}
  .skip-link{transition:none}
}