@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500&family=Orbitron:wght@700;900&display=swap');

:root{
  --paper:#ffffff;
  --mist:#f5f5f5;
  --ink:#1f1f1f;
  --ink-2:#4d4d4d;
  --ink-3:#6d6d6d;
  --line:rgba(31,31,31,.13);
  --glass:rgba(255,255,255,.62);
  --edge:rgba(255,255,255,.92);
  --r:28px;
  --shadow:0 22px 46px -28px rgba(17,17,17,.45);
  --shadow-soft:0 6px 18px -10px rgba(17,17,17,.28);
  --font-mono:"JetBrains Mono",ui-monospace,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-hud:"Orbitron","JetBrains Mono","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  overflow-x:hidden;
}

body{
  margin:0;
  width:100%;
  font-family:var(--font-mono);
  font-size:16.5px;
  line-height:1.78;
  color:var(--ink);
  background-color:var(--mist);
  background-image:
    radial-gradient(900px 540px at 8% -10%, #ffffff 0%, rgba(255,255,255,0) 62%),
    radial-gradient(720px 520px at 98% 4%, rgba(255,255,255,.95) 0%, rgba(255,255,255,0) 58%),
    linear-gradient(180deg,#fbfbfb 0%, #f5f5f5 46%, #f7f7f7 100%);
  background-attachment:fixed;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

a{color:inherit}

img,
svg,
video,
iframe{max-width:100%}

img{height:auto}

:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:3px;
  border-radius:8px;
}

[id]{scroll-margin-top:118px}

/* 顶部细条 */
.ticker{
  background:var(--ink);
  color:var(--paper);
  min-height:34px;
  max-width:100%;
  display:flex;
  align-items:center;
  padding:6px clamp(16px,4vw,40px);
  overflow:hidden;
}
.ticker-line{
  margin:0;
  min-width:0;
  font-family:var(--font-hud);
  font-size:13px;
  letter-spacing:.34em;
  text-transform:uppercase;
  white-space:nowrap;
  opacity:.92;
}

/* 顶栏 */
.topbar{
  position:sticky;
  top:0;
  z-index:70;
  max-width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px clamp(16px,4vw,40px);
  background:rgba(255,255,255,.76);
  -webkit-backdrop-filter:blur(20px) saturate(1.6);
  backdrop-filter:blur(20px) saturate(1.6);
  border-bottom:1px solid var(--line);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  min-width:0;
  padding:4px 10px 4px 4px;
  border-radius:999px;
  text-decoration:none;
  font-family:var(--font-hud);
  font-weight:900;
  font-size:17px;
  letter-spacing:.06em;
  line-height:1.2;
  transition:background .25s ease,transform .25s ease;
}
.brand span{min-width:0;overflow-wrap:anywhere}
.brand:hover{background:rgba(31,31,31,.06);transform:translateY(-1px)}
.brand .mark{
  width:34px;
  height:34px;
  flex:0 0 34px;
  border-radius:50%;
  object-fit:cover;
  display:block;
  background:var(--mist);
  border:1px solid var(--line);
}

.dock{position:relative;flex:0 0 auto}

.dock-btn{
  list-style:none;
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  box-shadow:var(--shadow-soft);
  font-size:16px;
  letter-spacing:.08em;
  white-space:nowrap;
  cursor:pointer;
  user-select:none;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.dock-btn::-webkit-details-marker{display:none}
.dock-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.dock-btn i{
  width:8px;height:8px;
  flex:0 0 8px;
  border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-1px);
  transition:transform .25s ease;
}
.dock[open] .dock-btn{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.dock[open] .dock-btn i{transform:rotate(-135deg) translateY(-1px)}

.dock-menu{
  position:absolute;
  right:0;
  top:calc(100% + 12px);
  width:min(84vw,340px);
  max-width:calc(100vw - 24px);
  margin:0;
  padding:14px;
  list-style:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px;
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(22px);
  backdrop-filter:blur(22px);
  box-shadow:var(--shadow);
  animation:dockIn .22s ease both;
}
details:not([open]) > .dock-menu{display:none}

@keyframes dockIn{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

.dock-menu a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 12px;
  border-radius:14px;
  font-size:16px;
  text-decoration:none;
  transition:background .2s ease,transform .2s ease;
}
.dock-menu a:hover{background:var(--mist);transform:translateX(2px)}

/* 首屏 */
main{display:block;max-width:100%}

.stage{
  display:grid;
  gap:26px;
  align-items:center;
  max-width:1180px;
  margin:0 auto;
  padding:clamp(26px,6vw,60px) clamp(16px,4vw,40px) clamp(20px,4vw,40px);
  min-height:calc(100svh - 120px);
}

.stage-copy{min-width:0;max-width:100%}

.headline{
  margin:0 0 18px;
  max-width:100%;
  font-family:var(--font-hud);
  font-weight:900;
  font-size:clamp(30px,7.2vw,62px);
  line-height:1.08;
  letter-spacing:.005em;
  overflow-wrap:anywhere;
  word-break:break-word;
}

.lead{
  margin:0;
  max-width:46ch;
  font-size:clamp(16px,2.3vw,19px);
  line-height:1.75;
  color:var(--ink-2);
  overflow-wrap:anywhere;
}

.stage-art{
  position:relative;
  margin:0;
  max-width:100%;
  border-radius:32px;
  overflow:hidden;
  min-height:280px;
  aspect-ratio:4/3;
  border:1px solid var(--edge);
  background:
    linear-gradient(135deg,rgba(255,255,255,.9),rgba(245,245,245,.75));
  box-shadow:var(--shadow);
  display:flex;
  align-items:flex-end;
}
.stage-art::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(31,31,31,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,31,31,.055) 1px,transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
}
.stage-art .hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.chip{
  position:relative;
  margin:16px;
  padding:8px 16px;
  min-height:40px;
  max-width:calc(100% - 32px);
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  border:1px solid var(--edge);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  font-family:var(--font-hud);
  font-size:13px;
  letter-spacing:.16em;
  overflow-wrap:anywhere;
  box-shadow:var(--shadow-soft);
}

/* 内容区 */
.board{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:20px;
  max-width:1180px;
  margin:0 auto;
  padding:clamp(22px,4vw,40px) clamp(16px,4vw,40px) clamp(40px,7vw,72px);
}

.prose{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:16px;
  min-width:0;
  max-width:100%;
}

.prose > *{
  min-width:0;
  max-width:100%;
  padding:clamp(20px,3.2vw,32px);
  border-radius:var(--r);
  border:1px solid var(--edge);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  backdrop-filter:blur(16px) saturate(1.4);
  box-shadow:var(--shadow);
  overflow-wrap:anywhere;
  word-break:break-word;
  overflow-x:auto;
  overflow-y:hidden;
  overscroll-behavior-x:contain;
  transition:transform .3s ease,box-shadow .3s ease;
}
.prose > *:hover{
  transform:translateY(-2px) scale(1.004);
  box-shadow:0 26px 54px -30px rgba(17,17,17,.5);
}

.prose *{min-width:0}

.prose h2{
  margin:0 0 12px;
  font-family:var(--font-hud);
  font-weight:700;
  font-size:clamp(20px,2.8vw,27px);
  line-height:1.32;
  letter-spacing:.01em;
  overflow-wrap:anywhere;
}

.prose h3{
  margin:26px 0 10px;
  font-size:clamp(17px,2.2vw,19px);
  line-height:1.5;
}

.prose p{margin:0 0 1em;max-width:66ch;overflow-wrap:anywhere}
.prose p:last-child{margin-bottom:0}

.prose ul,
.prose ol{margin:0 0 1em;padding-left:1.25em}
.prose li{margin:0 0 .45em;overflow-wrap:anywhere}
.prose li:last-child{margin-bottom:0}

.prose a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;overflow-wrap:anywhere}

.prose blockquote{
  margin:0 0 1em;
  padding:14px 18px;
  border-left:3px solid var(--ink);
  border-radius:0 16px 16px 0;
  background:rgba(255,255,255,.6);
  color:var(--ink-2);
  overflow-wrap:anywhere;
}

.prose img{
  height:auto;
  max-width:100%;
  border-radius:18px;
  border:1px solid var(--line);
}

.prose table{
  width:100%;
  max-width:100%;
  table-layout:fixed;
  border-collapse:collapse;
  font-size:16px;
}
.prose th,
.prose td{
  padding:10px 12px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
  overflow-wrap:anywhere;
  word-break:break-word;
}

.prose code{
  font-size:15px;
  padding:1px 6px;
  border-radius:8px;
  background:rgba(31,31,31,.07);
  overflow-wrap:anywhere;
}

.prose pre{
  margin:0 0 1em;
  padding:14px 16px;
  max-width:100%;
  overflow-x:auto;
  border-radius:16px;
  background:rgba(31,31,31,.06);
  font-size:15px;
  line-height:1.6;
}
.prose pre code{padding:0;background:none;white-space:pre}

/* 右侧栏 */
.rail{
  order:2;
  min-width:0;
  max-width:100%;
  padding:22px;
  border-radius:24px;
  border:1px solid var(--edge);
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  align-self:start;
}

.rail-title{
  margin:0;
  font-family:var(--font-hud);
  font-size:16px;
  font-weight:700;
  letter-spacing:.2em;
}

.rail .subtitle{
  margin:4px 0 14px;
  font-size:15px;
  letter-spacing:.04em;
  color:var(--ink-3);
  overflow-wrap:anywhere;
}

.rail-menu{
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:4px;
}
.rail-menu a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 12px;
  border-radius:12px;
  font-size:16px;
  text-decoration:none;
  color:var(--ink-2);
  overflow-wrap:anywhere;
  transition:background .2s ease,color .2s ease,padding-left .2s ease;
}
.rail-menu a:hover{background:var(--mist);color:var(--ink);padding-left:16px}

/* 页脚 */
footer{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  max-width:100%;
  padding:22px clamp(16px,4vw,40px);
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
}

.brand--foot{
  font-size:18px;
  padding:4px 12px 4px 8px;
  background:var(--paper);
  border:1px solid var(--line);
}

.foot-nav{
  display:flex;
  flex-wrap:wrap;
  gap:2px 16px;
  min-width:0;
  max-width:100%;
}
.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:16px;
  text-decoration:none;
  color:var(--ink-2);
  transition:color .2s ease;
}
.foot-nav a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}

.foot-copy{
  font-size:15px;
  letter-spacing:.04em;
  color:var(--ink-3);
  overflow-wrap:anywhere;
}

/* 显隐动画 */
.js .reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1);
}
.js .reveal.in{opacity:1;transform:none}

/* 断点 */
@media (min-width:640px){
  .stage-art{aspect-ratio:16/11}
  .foot-copy{font-size:15px}
}

@media (min-width:900px){
  .stage{
    grid-template-columns:1.02fr .98fr;
    gap:clamp(28px,5vw,56px);
    min-height:calc(100svh - 130px);
  }
  .stage-art{aspect-ratio:5/6;min-height:360px}
}

@media (min-width:820px){
  .prose{grid-template-columns:repeat(2,minmax(0,1fr))}
  .prose > *:nth-child(3n+1){grid-column:1 / -1}
}

@media (min-width:1040px){
  .board{grid-template-columns:minmax(0,1fr) 286px;gap:24px;align-items:start}
  .rail{position:sticky;top:calc(76px + 22px)}
}

@media (max-width:519px){
  body{font-size:16px}
  .ticker-line{font-size:12px;letter-spacing:.24em}
  .brand{font-size:16px;gap:8px;padding-right:8px}
  .brand .mark{width:30px;height:30px;flex-basis:30px}
  .dock-btn{padding:9px 14px;gap:8px}
  .dock-menu{grid-template-columns:1fr;width:min(80vw,270px);padding:12px}
  .chip{font-size:12px;margin:12px;max-width:calc(100% - 24px)}
  .prose > *{padding:20px 18px;border-radius:22px}
  footer{gap:6px 16px}
  .brand--foot{font-size:16px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .prose > *{transition:none}
  .prose > *:hover{transform:none}
  .brand,.dock-btn,.dock-menu a,.rail-menu a,.foot-nav a{transition:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}