:root{
  --ink:#0B0B0F;
  --acid:#E9FF3D;
  --bone:#EDEDE7;
  --panel:#13131A;
  --dim:rgba(237,237,231,.74);
  --faint:rgba(237,237,231,.5);
  --line:rgba(237,237,231,.16);
  --disp:'Syncopate','Space Mono',ui-monospace,monospace;
  --mono:'Space Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
}

*{box-sizing:border-box}

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

body{
  margin:0;
  background:var(--ink);
  color:var(--bone);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.78;
}

article{scroll-margin-top:104px}

a{color:var(--acid);text-decoration:none}
a:hover,a:focus-visible{text-decoration:underline}

img{display:block;max-width:100%;height:auto}

p{margin:0 0 18px}

.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;
}

/* 顶栏 */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,11,15,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}

.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:6px;
  max-width:1260px;
  margin:0 auto;
  padding:4px 14px;
}

.nav-side{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
  margin:0;
  min-width:0;
}

.nav-r{justify-content:flex-end}

.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 9px;
  color:var(--bone);
  font-family:var(--mono);
  font-size:16px;
  letter-spacing:.01em;
  line-height:1.2;
}

.nav-link::before{
  content:"";
  width:5px;height:5px;
  margin-right:7px;
  background:var(--acid);
  flex:0 0 auto;
}

.nav-link:hover,.nav-link:focus-visible{
  color:var(--acid);
  text-decoration:none;
}

.brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 12px;
  color:var(--bone);
  font-family:var(--disp);
  font-weight:700;
  font-size:16px;
  letter-spacing:.14em;
  line-height:1.1;
  text-align:center;
  flex:0 0 auto;
}

.brand:hover,.brand:focus-visible{text-decoration:none;color:var(--acid)}
.brand img{max-height:30px;width:auto}

/* 主视觉 */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:stretch;
  min-height:100vh;
  min-height:100svh;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--ink);
}

.hero-bg{
  position:absolute;
  left:0;
  bottom:-.12em;
  z-index:0;
  font-family:var(--disp);
  font-weight:700;
  font-size:clamp(62px,14vw,190px);
  line-height:.82;
  letter-spacing:.02em;
  white-space:nowrap;
  color:transparent;
  -webkit-text-stroke:1px rgba(233,255,61,.26);
  pointer-events:none;
  will-change:transform;
}

.hero-figure{
  position:relative;
  z-index:1;
  grid-column:1;
  margin:0;
  min-height:56vh;
  background:var(--panel);
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
}

.hero-figure img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.04);
}

.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  background:linear-gradient(100deg,rgba(11,11,15,.05) 40%,rgba(11,11,15,.55) 100%);
}

.hero-copy{
  position:relative;
  z-index:3;
  grid-column:2;
  align-self:center;
  padding:70px 34px;
  text-align:right;
}

h1{
  margin:0 0 20px;
  font-family:var(--disp);
  font-weight:700;
  font-size:clamp(28px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:.03em;
  color:var(--bone);
}

.hero-lead{
  margin:0 0 30px;
  font-family:var(--mono);
  font-size:17px;
  line-height:1.75;
  color:var(--dim);
  max-width:38ch;
  margin-left:auto;
}

.hero-jump{
  display:inline-flex;
  align-items:center;
  min-height:48px;
  padding:0 24px;
  background:var(--acid);
  color:var(--ink);
  font-family:var(--mono);
  font-weight:700;
  font-size:16px;
  letter-spacing:.06em;
}

.hero-jump:hover,.hero-jump:focus-visible{
  text-decoration:none;
  background:var(--bone);
}

/* 侧栏 + 标题区 */
.deck{
  display:grid;
  grid-template-columns:minmax(0,220px) minmax(0,1fr);
  gap:34px;
  max-width:1260px;
  margin:0 auto;
  padding:72px 20px;
  border-bottom:1px solid var(--line);
}

.side{
  align-self:start;
  position:sticky;
  top:92px;
}

.side-links{
  margin:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}

.side-links a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:2px 8px;
  color:var(--dim);
  font-family:var(--mono);
  font-size:16px;
  line-height:1.3;
  border-left:2px solid var(--line);
}

.side-links a:hover,.side-links a:focus-visible{
  color:var(--acid);
  border-left-color:var(--acid);
  text-decoration:none;
}

.deck-body{padding-top:4px}

deck-body h2,h2{}

.deck-body h2{
  margin:0 0 14px;
  font-family:var(--disp);
  font-weight:700;
  font-size:clamp(26px,4.2vw,46px);
  line-height:1.14;
  letter-spacing:.08em;
  color:var(--bone);
}

.subtitle{
  margin:0;
  color:var(--acid);
  font-family:var(--mono);
  font-size:16px;
  letter-spacing:.2em;
}

/* 正文 */
main > article[id]{
  padding:80px 24px;
  border-bottom:1px solid var(--line);
}

main > article[id] > *{
  max-width:820px;
  margin-left:auto;
  margin-right:auto;
}

main > article[id]:nth-child(even){
  background:#0E0E14;
}

main > article[id] h2{
  margin:0 auto 16px;
  font-family:var(--disp);
  font-weight:700;
  font-size:clamp(23px,3.2vw,36px);
  line-height:1.26;
  letter-spacing:.05em;
  color:var(--bone);
}

main > article[id] h3{
  margin:34px auto 12px;
  font-family:var(--disp);
  font-size:19px;
  line-height:1.4;
  letter-spacing:.06em;
  color:var(--acid);
}

main > article[id] p{
  color:var(--dim);
  margin:0 auto 18px;
}

main > article[id] ul,
main > article[id] ol{
  color:var(--dim);
  margin:0 auto 20px;
  padding-left:1.35em;
}

main > article[id] li{margin:0 0 9px}
main > article[id] li::marker{color:var(--acid)}

main > article[id] blockquote{
  margin:26px auto;
  padding:16px 20px;
  background:var(--panel);
  border-left:3px solid var(--acid);
  color:var(--bone);
}

main > article[id] blockquote p{margin:0;color:var(--bone)}

main > article[id] figure{
  margin:28px auto;
  background:var(--panel);
}

main > article[id] img{width:100%}
main > article[id] figcaption{font-family:var(--mono);font-size:16px;color:var(--faint);padding:10px 2px}

main > article[id] strong{color:var(--bone)}
main > article[id] hr{border:0;border-top:1px solid var(--line);margin:34px auto}

main > article[id] > h2 + p{
  margin-bottom:26px;
  color:var(--dim);
}

/* 订阅块 */
.cta{
  max-width:1260px;
  margin:0 auto;
  padding:76px 20px 84px;
  border-bottom:1px solid var(--line);
}

.cta h2{
  margin:0 0 12px;
  font-family:var(--disp);
  font-weight:700;
  font-size:clamp(24px,3.6vw,40px);
  letter-spacing:.08em;
  line-height:1.2;
}

.cta .subtitle{margin-bottom:26px}

.cta-form{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  max-width:540px;
}

.cta-form input{
  flex:1 1 220px;
  min-height:50px;
  padding:0 14px;
  background:var(--panel);
  border:1px solid var(--line);
  color:var(--bone);
  font-family:var(--mono);
  font-size:16px;
}

.cta-form input::placeholder{color:var(--faint)}
.cta-form input:focus{outline:2px solid var(--acid);outline-offset:1px}

.cta-form button{
  min-height:50px;
  padding:0 28px;
  border:0;
  background:var(--acid);
  color:var(--ink);
  font-family:var(--mono);
  font-weight:700;
  font-size:16px;
  letter-spacing:.08em;
  cursor:pointer;
}

.cta-form button:hover,.cta-form button:focus-visible{background:var(--bone)}

/* 页脚 */
footer{
  max-width:1260px;
  margin:0 auto;
  padding:52px 20px 44px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 24px;
  align-items:center;
}

footer p{margin:0}

.f-brand{
  font-family:var(--disp);
  font-weight:700;
  font-size:16px;
  letter-spacing:.12em;
  line-height:1.5;
  color:var(--bone);
}

.f-links{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:2px 16px;
}

.f-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--dim);
  font-family:var(--mono);
  font-size:16px;
}

.f-links a:hover,.f-links a:focus-visible{color:var(--acid)}

footer small{
  grid-column:1 / -1;
  display:block;
  margin-top:12px;
  padding-top:18px;
  border-top:1px solid var(--line);
  text-align:center;
  color:var(--faint);
  font-family:var(--mono);
  font-size:16px;
  letter-spacing:.08em;
}

/* 滚动显现 */
.reveal{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .7s ease,transform .8s cubic-bezier(.18,.72,.24,1);
}

.reveal.in{
  opacity:1;
  transform:translateY(0);
}

@media (max-width:900px){
  .site-nav{flex-wrap:wrap;justify-content:center;padding:4px 10px}
  .brand{order:-1;width:100%}
  .nav-side{width:100%;justify-content:center}
  .nav-r{justify-content:center}

  .hero{grid-template-columns:1fr;min-height:0}
  .hero-figure{grid-column:1;min-height:42vh}
  .hero-figure::after{background:linear-gradient(180deg,rgba(11,11,15,0) 55%,rgba(11,11,15,.7) 100%)}
  .hero-copy{grid-column:1;padding:30px 20px 54px;text-align:left}
  .hero-lead{margin-left:0;margin-right:0}
  .hero-bg{font-size:clamp(54px,17vw,120px);opacity:.8}

  .deck{grid-template-columns:1fr;gap:22px;padding:52px 20px}
  .side{position:static}
  .side-links{flex-direction:row;flex-wrap:wrap;gap:0 8px}
  .side-links a{border-left:0;border-bottom:2px solid var(--line);padding:2px 6px}
  .side-links a:hover,.side-links a:focus-visible{border-left-color:transparent;border-bottom-color:var(--acid)}

  main > article[id]{padding:52px 20px}

  .cta{padding:56px 20px 62px}

  footer{grid-template-columns:1fr;text-align:center;padding:40px 20px 36px}
  .f-links{justify-content:center}
  footer small{margin-top:8px}

  article{scroll-margin-top:132px}
}

@media (max-width:420px){
  .nav-link{padding:0 7px;font-size:16px}
  .hero-copy{padding:26px 16px 48px}
  main > article[id]{padding:44px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero-bg{transform:none !important}
}

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