:root{
  --bg:#fffdfa;
  --ink:#14171a;
  --muted:#606974;
  --line:#e9e2d8;
  --blue:#d8f0ff;
  --blue-soft:#eef8ff;
  --mint:#dff7e8;
  --mint-soft:#eefaf2;
  --yellow:#ffe99b;
  --yellow-soft:#fff7cf;
  --paper:#fffefa;
  --shadow:0 24px 64px rgba(38,54,72,.11);
  --soft-shadow:0 10px 24px rgba(38,54,72,.07);
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Arial,sans-serif;
  --latin-serif:"Newsreader",ui-serif,Georgia,serif;
  --zh-serif:"Songti SC","Noto Serif SC","STSong","Noto Serif SC",Georgia,serif;
  --ja-serif:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",ui-serif,serif;
  --serif:var(--latin-serif);
  --mono:"SF Mono","JetBrains Mono",Menlo,monospace;
  --resource-title-size:clamp(46px,7vw,86px);
  --resource-title-leading:1.02;
}
*{box-sizing:border-box;-webkit-font-smoothing:antialiased}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;overflow-x:hidden}
html[lang="zh-CN"]{
  --serif:var(--zh-serif);
  --resource-title-size:clamp(42px,6vw,76px);
  --resource-title-leading:1.08;
}
html[lang="ja"]{
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Hiragino Sans","Noto Serif JP",sans-serif;
  --serif:var(--ja-serif);
  --resource-title-size:clamp(40px,5.8vw,72px);
  --resource-title-leading:1.12;
}
body{
  min-width:320px;
  min-height:100vh;
  background:
    radial-gradient(circle at 18% 4%,rgba(216,240,255,.78),transparent 32%),
    radial-gradient(circle at 86% 12%,rgba(223,247,232,.62),transparent 30%),
    linear-gradient(180deg,#fffdfa 0%,#fffefa 46%,#fffdfa 100%);
  color:var(--ink);
  font:15px/1.65 var(--sans);
}
a{color:inherit;text-decoration:none}
button{font:inherit}
::selection{background:var(--yellow-soft);color:var(--ink)}
.nav{
  position:sticky;
  top:0;
  z-index:50;
  height:62px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding-inline:max(22px,calc((100vw - 1180px)/2));
  border-bottom:1px solid rgba(233,226,216,.68);
  background:rgba(255,253,250,.84);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-size:15px;
  font-weight:850;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.brand-mark{
  width:28px;
  height:28px;
  flex:0 0 auto;
  border-radius:8px;
  background:url("uploads/Icon-iOS-Default-1024@1x.png") center/cover no-repeat;
  box-shadow:0 10px 22px rgba(0,0,0,.16);
}
.brand-mark::after{display:none}
.nav-links{
  display:flex;
  align-items:center;
  gap:34px;
  color:#30353b;
  font-size:14px;
}
.nav-links a{transition:color .18s ease}
.nav-links a:hover{color:#070809}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-cta,.cta-button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:0 20px;
  border:0;
  border-radius:999px;
  background:#070809;
  color:#fff;
  font-size:14px;
  font-weight:760;
  box-shadow:0 12px 22px rgba(0,0,0,.16);
}
.nav-cta:hover .arr,.cta-button:hover .arr{transform:translateX(3px)}
.arr{display:inline-block;margin-left:2px;transition:transform .18s ease}
.lang-switcher{
  display:inline-flex;
  align-items:center;
  gap:3px;
  padding:3px;
  border-radius:999px;
  background:rgba(255,255,255,.62);
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.08);
}
.lang-switcher button{
  min-height:28px;
  padding:0 9px;
  border:0;
  border-radius:999px;
  background:transparent;
  color:#68727d;
  font-size:12px;
  font-weight:760;
  cursor:pointer;
}
.lang-switcher button.active,
.lang-switcher button[aria-pressed="true"]{
  background:#111315;
  color:#fff;
  box-shadow:0 8px 16px rgba(0,0,0,.12);
}
.page-shell{
  position:relative;
  z-index:2;
  width:min(1040px,calc(100% - 44px));
  margin:0 auto;
  padding:88px 0 72px;
}
.hero{
  max-width:820px;
  margin:0 auto 52px;
  text-align:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:18px;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.7);
  color:#5f6872;
  font-size:13px;
  font-weight:760;
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.08),0 12px 30px rgba(38,54,72,.06);
}
.dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#67c9ff;
  box-shadow:0 0 0 6px rgba(103,201,255,.16);
}
h1{
  margin:0 0 18px;
  color:var(--ink);
  font:400 var(--resource-title-size)/var(--resource-title-leading) var(--serif);
  letter-spacing:0;
  text-wrap:balance;
  overflow-wrap:anywhere;
}
h1 em{font-style:italic;color:#3a4148}
.lead{
  max-width:760px;
  margin:0 auto;
  color:var(--muted);
  font-size:18px;
  line-height:1.78;
  text-wrap:pretty;
  overflow-wrap:anywhere;
}
.resource-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:18px;
}
.section-card,.changelog-card{
  min-width:0;
  max-width:100%;
  border:0;
  border-radius:18px;
  background:linear-gradient(135deg,rgba(255,255,255,.84),rgba(255,254,250,.68));
  padding:30px;
  box-shadow:var(--soft-shadow),inset 0 0 0 1px rgba(20,23,26,.045);
}
.section-card:nth-child(3n+1){
  background:linear-gradient(135deg,rgba(238,248,255,.9),rgba(255,254,250,.78));
}
.section-card:nth-child(3n+2){
  background:linear-gradient(135deg,rgba(238,250,242,.9),rgba(255,254,250,.76));
}
.section-card:nth-child(3n+3){
  background:linear-gradient(135deg,rgba(255,247,207,.82),rgba(255,254,250,.76));
}
.section-kicker{
  margin-bottom:10px;
  color:#69737d;
  font-size:12px;
  font-weight:800;
  letter-spacing:.04em;
  text-transform:uppercase;
}
.section-card h2,.changelog-card h2{
  margin:0 0 12px;
  color:var(--ink);
  font-size:24px;
  line-height:1.24;
  letter-spacing:0;
  overflow-wrap:anywhere;
  word-break:break-word;
}
.section-card p,.changelog-summary{
  margin:0;
  color:var(--muted);
  overflow-wrap:anywhere;
  word-break:break-word;
}
.section-card .section-action{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 14px;
  margin-top:18px;
}
.section-card .section-action a{
  display:inline-flex;
  min-height:40px;
  align-items:center;
  justify-content:center;
  padding:0 16px;
  border-radius:999px;
  background:#101112;
  color:#fff;
  font-size:14px;
  font-weight:780;
  box-shadow:0 12px 22px rgba(0,0,0,.13);
}
.section-card .section-action span{
  color:#747c84;
  font-size:13px;
}
.item-list,.key-list,.changelog-section-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin-top:18px;
}
.item,.key-row,.changelog-section{
  min-width:0;
  border:0;
  border-radius:14px;
  background:rgba(255,255,255,.58);
  padding:18px;
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.05);
}
.item{min-height:112px}
.item strong,.key-desc strong,.changelog-section h3{
  display:block;
  margin:0 0 7px;
  color:var(--ink);
  font-size:16px;
  line-height:1.32;
}
.item span,.key-desc span,.changelog-section p{
  display:block;
  color:#6b737b;
  font-size:14px;
  line-height:1.65;
  overflow-wrap:anywhere;
}
.hidden-field{display:none}
.resource-form{
  margin-top:22px;
  padding:18px;
  border-radius:16px;
  background:rgba(255,255,255,.66);
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.06);
}
.resource-form label{
  display:block;
  margin-bottom:10px;
  color:#30353b;
  font-size:13px;
  font-weight:760;
}
.resource-form-row{
  display:flex;
  gap:10px;
}
.resource-form input[type="email"]{
  min-width:0;
  flex:1 1 auto;
  height:48px;
  border:0;
  border-radius:13px;
  background:#fff;
  color:var(--ink);
  padding:0 15px;
  font:650 15px/1 var(--sans);
  outline:none;
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.1);
}
.resource-form input[type="email"]:focus{
  box-shadow:inset 0 0 0 2px rgba(103,201,255,.74),0 0 0 5px rgba(103,201,255,.14);
}
.resource-form button{
  flex:0 0 auto;
  min-width:124px;
  height:48px;
  border:0;
  border-radius:13px;
  background:#101112;
  color:#fff;
  padding:0 18px;
  font-size:14px;
  font-weight:780;
  cursor:pointer;
  box-shadow:0 12px 22px rgba(0,0,0,.13);
}
.resource-form button:disabled{cursor:default;opacity:.78}
.resource-form-note{
  margin-top:11px;
  color:#747c84;
  font-size:13px;
  line-height:1.55;
}
.resource-form.is-success .resource-form-note{color:#2f8a55}
.resource-form.is-error .resource-form-note{color:#b0473f}
.key-row{
  display:grid;
  grid-template-columns:112px minmax(0,1fr);
  gap:14px;
  align-items:start;
}
.key{
  color:#111315;
  font:760 13px/1.45 var(--mono);
}
.changelog-months{
  margin:-18px auto 28px;
  padding:12px 14px;
  border:0;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background:rgba(255,255,255,.62);
  box-shadow:var(--soft-shadow),inset 0 0 0 1px rgba(20,23,26,.045);
}
.changelog-months span{
  flex:0 0 auto;
  color:#6a727b;
  font:760 12px/1 var(--sans);
}
.changelog-months div{
  min-width:0;
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  padding-bottom:1px;
}
.changelog-months a{
  flex:0 0 auto;
  padding:7px 11px;
  border-radius:999px;
  background:rgba(255,255,255,.66);
  color:#30353b;
  font:760 12px/1 var(--sans);
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.06);
}
.changelog-timeline{
  position:relative;
  display:grid;
  gap:24px;
}
.changelog-timeline::before{
  content:"";
  position:absolute;
  top:8px;
  bottom:8px;
  left:128px;
  width:1px;
  background:linear-gradient(180deg,transparent,rgba(20,23,26,.12),transparent);
}
.changelog-release{
  position:relative;
  display:grid;
  grid-template-columns:112px minmax(0,1fr);
  gap:32px;
  scroll-margin-top:94px;
}
.changelog-release::before{
  content:"";
  position:absolute;
  left:124px;
  top:18px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:#67c9ff;
  box-shadow:0 0 0 7px rgba(255,253,250,.92);
}
.changelog-meta{
  padding-top:5px;
  color:#747c84;
  font:760 12px/1.45 var(--mono);
}
.changelog-meta time,.changelog-meta span{
  display:block;
  overflow-wrap:anywhere;
}
.changelog-meta span{margin-top:7px;color:#3c4248}
.changelog-card{
  background:linear-gradient(135deg,rgba(255,255,255,.86),rgba(238,248,255,.72));
}
.changelog-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:16px;
}
.changelog-tags span{
  padding:6px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.66);
  color:#69737d;
  font:760 11px/1 var(--sans);
  box-shadow:inset 0 0 0 1px rgba(20,23,26,.055);
}
.changelog-card h2{font-size:28px;line-height:1.18}
.changelog-summary{max-width:780px;font-size:16px;line-height:1.75}
.changelog-section h3{font-size:17px}
.changelog-bullets{
  display:grid;
  gap:8px;
  margin:14px 0 0;
  padding:0;
  list-style:none;
}
.changelog-bullets li{
  position:relative;
  padding-left:18px;
  color:#6b737b;
  font-size:14px;
  line-height:1.65;
  overflow-wrap:anywhere;
  word-break:break-word;
}
.changelog-bullets li::before{
  content:"";
  position:absolute;
  left:0;
  top:.76em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:#67c9ff;
}
.cta-panel{
  margin-top:22px;
  padding:28px;
  border-radius:18px;
  background:linear-gradient(135deg,#dff7e8,#c7f0d6 72%,#fff7cf);
  color:var(--ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  box-shadow:var(--shadow);
}
.cta-panel h2{
  margin:0 0 6px;
  color:var(--ink);
  font-size:24px;
  line-height:1.25;
}
.cta-panel p{margin:0;color:#56606a}
.cta-button{
  flex:0 0 auto;
  min-height:44px;
  padding:0 22px;
}
footer{
  position:relative;
  z-index:2;
  margin-top:24px;
  background:#101112;
  color:#f7f4ee;
}
.foot{
  width:min(1180px,calc(100% - 44px));
  margin:0 auto;
  padding:52px 0 34px;
  display:grid;
  grid-template-columns:1.35fr repeat(3,1fr);
  gap:42px;
}
.foot-col{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:10px;
  color:rgba(255,255,255,.58);
  font-size:13px;
}
.foot-col h4{
  margin:0 0 4px;
  color:rgba(255,255,255,.86);
  font-size:12px;
  font-weight:760;
}
.foot-col a{transition:color .18s ease}
.foot-col a:hover{color:#fff}
.foot-tag{
  max-width:300px;
  color:rgba(255,255,255,.58);
  line-height:1.7;
}
.foot-brand{color:#fff}
.foot-bottom{
  width:min(1180px,calc(100% - 44px));
  margin:0 auto;
  padding:0 0 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  color:rgba(255,255,255,.48);
  font:650 12px/1.3 var(--sans);
}
.foot-bottom .lang-switcher{
  background:rgba(255,255,255,.08);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.foot-bottom .lang-switcher button{color:rgba(255,255,255,.62)}
.foot-bottom .lang-switcher button.active,
.foot-bottom .lang-switcher button[aria-pressed="true"]{
  background:#fff;
  color:#111315;
}
@media (max-width:880px){
  .nav-links{gap:20px}
}
@media (max-width:760px){
  .nav{
    height:60px;
    padding-inline:18px;
  }
  .nav-links,.nav-cta{display:none}
  .page-shell{
    width:min(100% - 32px,520px);
    padding:58px 0 54px;
  }
  .hero{
    margin-bottom:34px;
    text-align:left;
  }
  h1{font-size:42px}
  .lead{font-size:16px;margin-left:0}
  .section-card,.changelog-card{padding:22px;border-radius:16px}
  .item-list,.key-list,.changelog-section-grid{grid-template-columns:1fr}
  .key-row{grid-template-columns:1fr;gap:8px}
  .resource-form{padding:15px}
  .resource-form-row{flex-direction:column}
  .resource-form button{width:100%}
  .changelog-months{
    margin:-12px 0 22px;
    align-items:flex-start;
    flex-direction:column;
    gap:10px;
    border-radius:16px;
  }
  .changelog-months div{width:100%}
  .changelog-timeline{gap:20px}
  .changelog-timeline::before{left:8px}
  .changelog-release{grid-template-columns:1fr;gap:10px;padding-left:24px}
  .changelog-release::before{left:4px;top:10px}
  .changelog-meta{
    padding-top:0;
    display:flex;
    flex-wrap:wrap;
    gap:8px 12px;
  }
  .changelog-meta span{margin-top:0}
  .changelog-card h2{font-size:23px}
  .changelog-summary{font-size:15px;line-height:1.7}
  .cta-panel{
    align-items:flex-start;
    flex-direction:column;
    padding:24px;
  }
  .cta-button{width:100%}
  .foot{
    width:min(100% - 36px,520px);
    grid-template-columns:1fr 1fr;
    padding:40px 0 28px;
    gap:30px;
  }
  .foot-col:first-child{grid-column:1/-1}
  .foot-bottom{
    width:min(100% - 36px,520px);
    padding:0 0 26px;
    align-items:flex-start;
    flex-direction:column;
  }
}
@media (max-width:440px){
  .foot{grid-template-columns:1fr}
}