*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit}

:root{
  --ink:#07060C;
  --panel:#120A22;
  --panel-2:#0E0A1B;
  --violet:#7C3AED;
  --violet-glow:#C084FC;
  --arcade-blue:#2563EB;
  --warn:#FFD166;
  --score:#34D399;
  --paper:#F7F5FF;
  --muted:#9A93B8;
  --line:#3B2A5A;
  --line-soft:#261844;

  --font-display:"Archivo Black","Space Grotesk","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1200px;
  --gutter:clamp(16px,4vw,40px);
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-break:900px;
}

html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.2;letter-spacing:.02em}
a{text-decoration-thickness:1px;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--violet-glow);outline-offset:3px;border-radius:2px}
#main-content{display:block;scroll-margin-top:140px}

/* ---------- 通用容器 ---------- */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding-block:clamp(40px,6vw,84px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.surface-paper{background:var(--paper);color:#150E28;border:1px solid #DCD6F2}
.surface-paper a{color:var(--arcade-blue)}
.surface-paper h1,.surface-paper h2,.surface-paper h3{color:#0D0819}

/* ---------- 长文排版 ---------- */
.prose{max-width:62ch;font-size:17px;line-height:1.85}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:clamp(22px,2.6vw,30px);line-height:1.4;margin-top:2em;letter-spacing:.01em}
.prose h3{font-size:19px;line-height:1.5;margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.4em;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{color:var(--violet-glow)}
.surface-paper .prose a{color:var(--arcade-blue)}
.prose strong{font-weight:700}
.prose code{font-family:var(--font-mono);font-size:.9em;padding:.1em .35em;background:rgba(124,58,237,.18);border-radius:2px}
.surface-paper .prose code{background:rgba(124,58,237,.12)}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.breadcrumb li{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumb li:not(:first-child)::before{content:"/";color:#463363}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--violet-glow)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.25rem .55rem;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);background:rgba(18,10,34,.7);
  border:1px solid var(--line);border-radius:var(--radius);
  white-space:nowrap;
}
.tag--live{color:var(--score);border-color:rgba(52,211,153,.45);background:rgba(52,211,153,.1)}
.tag--warn{color:#2A1C00;background:var(--warn);border-color:var(--warn)}
.tag--violet{color:var(--violet-glow);border-color:rgba(192,132,252,.5);background:rgba(124,58,237,.16)}
.tag--blue{color:#C7D8FF;border-color:rgba(37,99,235,.55);background:rgba(37,99,235,.18)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:44px;padding:.7rem 1.25rem;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;line-height:1;
  color:var(--paper);background:transparent;
  border:1px solid var(--line);border-radius:var(--radius);
  text-decoration:none;cursor:pointer;
  transition:transform .16s var(--ease),background-color .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{
  color:#fff;background:var(--violet);border-color:var(--violet);
  box-shadow:0 0 0 1px rgba(192,132,252,.22),0 10px 26px -14px rgba(124,58,237,.95);
}
.btn--primary:hover{background:#8B4BF0;border-color:var(--violet-glow);box-shadow:0 0 0 1px rgba(192,132,252,.45),0 12px 30px -14px rgba(124,58,237,1)}
.btn--ghost{color:var(--paper);background:rgba(124,58,237,.08);border-color:var(--line)}
.btn--ghost:hover{background:rgba(124,58,237,.2);border-color:var(--violet)}

/* ---------- 跳至主内容 ---------- */
.skip-link{
  position:fixed;top:0;left:50%;z-index:300;
  transform:translate(-50%,-150%);
  padding:.75rem 1.4rem;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
  color:#140A0A;background:var(--warn);
  text-decoration:none;
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translate(-50%,0);outline:2px solid var(--paper);outline-offset:-4px}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,#0C0819 0%,#07060C 82%);
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.site-header::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.028) 0 1px,transparent 1px 4px);
  pointer-events:none;
}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:6;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--arcade-blue),var(--violet),var(--violet-glow));
  box-shadow:0 0 12px rgba(124,58,237,.75);
  pointer-events:none;
}
.header-shell{
  position:relative;z-index:2;
  width:100%;max-width:var(--shell);
  margin:0 auto;padding:0 var(--gutter);
}
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
  padding:1.05rem 0 .95rem;
}
.masthead__tag{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);white-space:nowrap;
}
.masthead__tag::before{
  content:"";display:inline-block;width:6px;height:6px;margin-right:.6rem;
  background:var(--score);box-shadow:0 0 10px var(--score);
  transform:rotate(45deg) translateY(-1px);vertical-align:middle;
}
.masthead__center{display:flex;flex-direction:column;align-items:center;gap:.2rem;text-align:center}
.brand{
  display:inline-flex;align-items:center;gap:.5rem;
  color:var(--paper);text-decoration:none;
}
.brand__mark{
  font-family:var(--font-mono);font-size:11px;line-height:1;
  padding:.32rem .36rem;
  color:var(--warn);background:rgba(255,209,102,.08);
  border:1px solid rgba(255,209,102,.4);
  box-shadow:0 0 14px -4px rgba(255,209,102,.7);
}
.brand__name{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(19px,2.3vw,26px);letter-spacing:.05em;line-height:1.1;
  white-space:nowrap;
  text-shadow:0 0 22px rgba(124,58,237,.55);
}
.masthead__descriptor{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;
}
.masthead__actions{display:flex;align-items:center;gap:.6rem;justify-self:end}
.header-cta{white-space:nowrap}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle{
  display:none;align-items:center;gap:.55rem;
  min-height:44px;padding:.5rem .8rem;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  color:var(--paper);background:rgba(124,58,237,.14);
  border:1px solid var(--line);border-radius:var(--radius);
  cursor:pointer;
  transition:background-color .16s ease,border-color .16s ease;
}
.nav-toggle:hover{background:rgba(124,58,237,.28);border-color:var(--violet)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .18s var(--ease),opacity .18s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* ---------- 导航 ---------- */
.site-nav{
  display:flex;align-items:center;justify-content:center;gap:.4rem;
  padding:.4rem 0;
  border-top:1px solid var(--line);
}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.15rem}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;gap:.5rem;
  min-height:44px;padding:.55rem .9rem;
  font-size:14px;letter-spacing:.06em;
  color:var(--muted);text-decoration:none;
  border-radius:var(--radius);
  transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-link::before{
  content:"";width:6px;height:6px;flex:0 0 auto;
  background:var(--line);transform:rotate(45deg);
  transition:background-color .18s ease,box-shadow .18s ease;
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::before{background:var(--violet-glow)}
.nav-link[aria-current="page"]{
  color:var(--paper);
  background:linear-gradient(180deg,rgba(124,58,237,.2),rgba(124,58,237,.04));
  box-shadow:inset 0 -2px 0 var(--violet);
}
.nav-link[aria-current="page"]::before{
  background:var(--violet-glow);
  box-shadow:0 0 10px var(--violet-glow),0 0 22px rgba(192,132,252,.55);
}
.nav-cta{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,110px);
  color:var(--paper);
  background:
    radial-gradient(900px 320px at 16% 0%,rgba(124,58,237,.2),transparent 68%),
    radial-gradient(720px 260px at 88% 6%,rgba(37,99,235,.16),transparent 70%),
    #09060F;
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.022) 0 1px,transparent 1px 5px);
  pointer-events:none;
}
.footer-shell{
  position:relative;z-index:1;
  width:100%;max-width:var(--shell);
  margin:0 auto;padding:0 var(--gutter);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(28px,5vw,64px);
  padding:clamp(40px,6vw,76px) 0 clamp(30px,4.5vw,48px);
}
.footer-kicker{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.28em;text-transform:uppercase;
  color:var(--muted);
}
.footer-wordmark{
  display:inline-block;margin:.55rem 0 .75rem;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(24px,3.2vw,34px);letter-spacing:.03em;line-height:1.15;
  color:var(--paper);text-decoration:none;
  text-shadow:0 0 24px rgba(124,58,237,.55);
}
.footer-summary{max-width:34ch;font-size:15px;line-height:1.8;color:var(--muted)}
.footer-cta{margin-top:1.4rem}
.footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,34px)}
.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-mono);font-weight:500;
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--warn);
  padding-bottom:.65rem;margin-bottom:.7rem;
  border-bottom:1px solid var(--line);
}
.footer-col__list{display:grid;gap:.1rem}
.footer-col__list a{
  display:inline-block;min-height:40px;padding:.45rem 0;
  font-size:14px;color:var(--muted);text-decoration:none;
  transition:color .16s ease,transform .16s var(--ease);
}
.footer-col__list a:hover{color:var(--paper);transform:translateX(3px)}
.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(215px,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.footer-contact__cell{
  display:flex;flex-direction:column;gap:.35rem;
  padding:1.05rem 1.15rem;
  background:var(--panel-2);
}
.footer-contact__label{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);
}
.footer-contact__value{font-size:14px;line-height:1.65;color:var(--paper);word-break:break-word}
.copy-btn{
  align-self:flex-start;margin-top:.45rem;
  min-height:34px;padding:.32rem .7rem;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--score);background:rgba(52,211,153,.08);
  border:1px solid rgba(52,211,153,.42);border-radius:var(--radius);
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.copy-btn:hover{background:rgba(52,211,153,.2);border-color:var(--score)}
.copy-btn[data-state="done"]{color:#06231A;background:var(--score);border-color:var(--score)}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:.6rem 1.5rem;
  margin-top:clamp(22px,3.5vw,34px);
  padding:1.1rem 0 2.2rem;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted);
}
.footer-legal__meta{color:var(--muted)}
.footer-legal__note{color:#7E7699}

/* ---------- 标签页组件 ---------- */
.tabs{display:block}
.tabs__list{
  display:flex;gap:.3rem;overflow-x:auto;
  border-bottom:1px solid var(--line);
  scrollbar-width:thin;
}
.tabs__tab{
  flex:0 0 auto;
  min-height:44px;padding:.65rem 1rem;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--muted);background:transparent;
  border:1px solid transparent;border-bottom:0;border-radius:var(--radius) var(--radius) 0 0;
  white-space:nowrap;cursor:pointer;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.tabs__tab:hover{color:var(--paper)}
.tabs__tab[aria-selected="true"]{
  color:var(--paper);
  background:linear-gradient(180deg,rgba(124,58,237,.3),rgba(124,58,237,.06));
  border-color:var(--line);
  box-shadow:inset 0 -2px 0 var(--violet-glow);
}
.tabs__panel{padding-top:1.4rem;animation:panelIn .3s var(--ease) both}
.tabs__panel[hidden]{display:none}
@keyframes panelIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(140deg,#170D2B,#0B0716 55%,#120A22);
  isolation:isolate;
}
.media > img,
.media > picture > img,
.media > svg{display:block;width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(7,6,12,.22) 0 1px,transparent 1px 4px);
}
.media--wide{aspect-ratio:21 / 9}
.media--tall{aspect-ratio:3 / 4}
.media--square{aspect-ratio:1 / 1}
.media__placeholder{
  display:grid;place-items:center;width:100%;height:100%;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);
}
.media__label{
  position:absolute;left:.75rem;bottom:.75rem;z-index:2;
  padding:.3rem .55rem;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--paper);background:rgba(7,6,12,.85);
  border:1px solid var(--line);
}

/* ---------- 滚动显现 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.js [data-reveal][data-revealed]{opacity:1;transform:none}
[data-reveal]{opacity:1}

/* ---------- 平板 ---------- */
@media (max-width:1024px){
  .footer-top{grid-template-columns:minmax(0,1fr);gap:clamp(24px,4vw,40px)}
}

/* ---------- 移动 ---------- */
@media (max-width:900px){
  body{font-size:16px}
  .masthead{grid-template-columns:1fr auto;gap:.5rem;padding:.85rem 0}
  .masthead__tag{display:none}
  .masthead__center{justify-self:start;text-align:left;align-items:flex-start}
  .masthead__descriptor{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:block;
    max-height:0;opacity:0;padding:0;border-top:0;
    overflow:hidden;
    transition:max-height .34s var(--ease),opacity .22s ease,padding .34s var(--ease);
  }
  .site-nav[data-open]{
    max-height:700px;opacity:1;
    padding:.5rem 0 1rem;
    border-top:1px solid var(--line);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:.1rem}
  .nav-link{width:100%;justify-content:flex-start;padding:.85rem .8rem;font-size:15px}
  .nav-cta{
    display:inline-flex;justify-content:center;
    width:calc(100% - 1.6rem);margin:.8rem .8rem .2rem;
  }
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:560px){
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .footer-links{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-template-columns:minmax(0,1fr)}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .brand__name{font-size:18px}
  .tabs__tab{font-size:11px;padding:.6rem .75rem}
}

/* ---------- 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;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .btn:hover,.footer-col__list a:hover{transform:none}
}