:root {
  color-scheme: light;
  --ink: #102033;
  --muted: #637184;
  --blue: #1677d2;
  --sky: #83d7f4;
  --paper: #f7f8fa;
  --line: #dfe5eb;
  --night: #091a2b;
  --wrap: 1160px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
.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; }
.site-header { height: 76px; padding: 0 clamp(22px, 5vw, 72px); display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(18,40,62,.08); position: relative; z-index: 5; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 760; letter-spacing: -.045em; white-space: nowrap; }
.brand-light { font-weight: 440; color: #607184; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 12px; background: var(--night); color: var(--sky); font-family: Georgia, serif; font-size: 25px; font-style: italic; line-height: 1; }
.desktop-nav { display: flex; gap: clamp(22px, 3.2vw, 44px); color: #596b7d; font-size: 13px; font-weight: 620; }
.desktop-nav a, .text-link { transition: color .2s ease; }
.desktop-nav a:hover, .text-link:hover { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.language-picker select { appearance: none; border: 0; outline: 0; cursor: pointer; color: #445568; background: transparent; padding: 8px 22px 8px 4px; font-size: 12px; font-weight: 650; background-image: linear-gradient(45deg, transparent 50%, #657487 50%), linear-gradient(135deg, #657487 50%, transparent 50%); background-position: calc(100% - 9px) 13px, calc(100% - 5px) 13px; background-size: 4px 4px, 4px 4px; background-repeat: no-repeat; }
.header-github { display: inline-flex; gap: 7px; align-items: center; font-size: 12px; font-weight: 700; }
.hero { position: relative; min-height: 650px; overflow: hidden; background: var(--night); color: #f5f8fc; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: .17; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to right, black, transparent 86%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); z-index: -1; pointer-events: none; }
.hero-glow-one { width: 560px; height: 560px; right: -60px; top: -220px; background: radial-gradient(circle, rgba(26,133,220,.33), transparent 70%); }
.hero-glow-two { width: 480px; height: 480px; left: 29%; bottom: -360px; background: radial-gradient(circle, rgba(27,118,204,.22), transparent 72%); }
.hero-inner { max-width: var(--wrap); min-height: 595px; margin: auto; padding: 92px 28px 68px; display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: clamp(44px, 7vw, 96px); }
.hero-copy { max-width: 510px; }
.eyebrow { margin: 0 0 18px; color: #728399; font-size: 11px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.hero-eyebrow { display: flex; align-items: center; gap: 9px; color: #a4bacb; letter-spacing: .1em; }
.status-dot, .visual-live b { width: 7px; height: 7px; border-radius: 50%; background: #55d2a2; box-shadow: 0 0 12px rgba(85,210,162,.8); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { margin: 0; font-size: clamp(48px, 6vw, 76px); line-height: 1.08; letter-spacing: -.065em; font-weight: 730; }
.hero-subtitle { margin: 19px 0 9px; color: var(--sky); font-size: clamp(20px, 2.4vw, 27px); font-weight: 620; letter-spacing: -.04em; }
.hero-description { max-width: 450px; margin: 0; color: #aebdca; font-size: 15px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 21px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 13px; min-height: 45px; padding: 0 17px; border-radius: 9px; font-size: 13px; font-weight: 750; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #071827; background: var(--sky); box-shadow: 0 8px 24px rgba(64,176,227,.18); }
.button-primary:hover { background: #a2e7ff; box-shadow: 0 12px 30px rgba(64,176,227,.28); }
.button-quiet { padding-left: 0; color: #c0cbd5; }
.button-quiet:hover { color: white; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 31px; }
.meta-chip { padding: 6px 9px; color: #a8bac8; background: rgba(255,255,255,.055); border: 1px solid rgba(255,255,255,.11); border-radius: 5px; font-size: 10px; font-weight: 650; letter-spacing: .03em; }
.hero-visual { margin: 0; padding: 11px; border: 1px solid rgba(196,225,245,.22); border-radius: 15px; background: rgba(243,249,255,.09); box-shadow: 0 35px 90px rgba(0,0,0,.34), inset 0 1px 0 rgba(255,255,255,.15); transform: perspective(1400px) rotateY(-3deg) rotateX(1deg); }
.visual-topline { height: 33px; display: flex; align-items: center; justify-content: space-between; padding: 0 5px 8px; color: #b1c2d1; font-size: 10px; font-weight: 650; }
.visual-topline > span:first-child { display: flex; gap: 5px; }
.visual-topline i { width: 7px; height: 7px; border-radius: 50%; background: #7892a9; }
.visual-topline i:first-child { background: #ff7774; }.visual-topline i:nth-child(2) { background: #f6c65c; }.visual-topline i:nth-child(3) { background: #55cb87; }
.visual-live { display: flex; align-items: center; gap: 6px; color: #93aaba; font-size: 8px; letter-spacing: .12em; }
.visual-live b { width: 5px; height: 5px; }
.hero-visual img { display: block; width: 100%; height: auto; border-radius: 7px; }
.hero-visual figcaption { display: flex; align-items: center; gap: 9px; padding: 11px 3px 2px; color: #d5e1e9; font-size: 11px; }
.caption-key { display: inline-grid; place-items: center; min-width: 21px; height: 21px; padding: 0 5px; border: 1px solid rgba(148,218,248,.35); border-radius: 5px; color: var(--sky); font-family: ui-monospace, monospace; }
.hero-bottomline { max-width: var(--wrap); margin: 0 auto; padding: 0 28px 20px; display: flex; justify-content: space-between; color: #687c8d; font-size: 10px; letter-spacing: .07em; }
.hero-bottomline span:last-child { color: #728b9d; }
.section-wrap { width: min(var(--wrap), 100% - 56px); margin: 0 auto; }
.feature-section { padding-top: 105px; padding-bottom: 102px; }
.section-heading { max-width: 670px; margin-bottom: 43px; }
.section-heading h2, .difference-intro h2, .compat-layout h2 { margin: 0; color: var(--ink); font-size: clamp(34px, 4.2vw, 52px); line-height: 1.14; letter-spacing: -.055em; }
.section-heading > p:last-child { max-width: 560px; margin: 16px 0 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.mobile-break { display: none; }
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.demo-card { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border: 1px solid #e2e7ed; border-radius: 13px; background: white; box-shadow: 0 10px 35px rgba(20,43,68,.035); }
.demo-card-wide { grid-column: 1 / -1; display: grid; grid-template-columns: .64fr 1.36fr; align-items: center; }
.demo-copy { padding: 25px 25px 22px; }
.demo-number { color: #8a9aab; font: 700 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; }
.demo-copy h3 { margin: 12px 0 8px; font-size: 20px; letter-spacing: -.04em; }
.demo-copy p { min-height: 46px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.mini-tag { display: inline-flex; margin-top: 15px; padding: 6px 8px; border-radius: 5px; color: #1a69ad; background: #eaf5fe; font-size: 10px; font-weight: 740; }
.demo-media { overflow: hidden; margin: 0 18px 18px; border-radius: 8px; background: #e8edf2; }
.demo-card-wide .demo-media { margin: 18px 18px 18px 0; }
.demo-media img { display: block; width: 100%; height: auto; }
.demo-disclaimer { margin: 15px 0 0; color: #8793a0; font-size: 10px; }
.catalog-heading { margin: 72px 0 25px; padding-top: 30px; border-top: 1px solid var(--line); }
.catalog-heading .eyebrow { margin-bottom: 10px; }
.catalog-heading h3 { margin: 0; font-size: clamp(25px, 3vw, 34px); letter-spacing: -.045em; }
.catalog-heading > p:last-child { margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.catalog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.catalog-card { position: relative; min-width: 0; min-height: 190px; padding: 21px 20px 18px; border: 1px solid #e2e7ed; border-radius: 11px; background: rgba(255,255,255,.82); }
.catalog-index { display: inline-grid; place-items: center; width: 25px; height: 25px; margin-bottom: 13px; border-radius: 7px; color: #176eb0; background: #eaf5fe; font: 700 10px ui-monospace, monospace; }
.catalog-card h4 { margin: 0 0 8px; font-size: 14px; letter-spacing: -.025em; }
.catalog-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.75; }
.catalog-card code { display: block; margin-top: 13px; color: #3178aa; font: 600 10px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
.catalog-card-note { background: #edf2f6; }
.catalog-card-note .catalog-index { color: #526579; background: #dce5ed; }
.difference-section { padding: 88px 0 94px; background: #edf2f6; border-top: 1px solid #e4e9ee; border-bottom: 1px solid #e4e9ee; }
.difference-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.eyebrow-blue { color: #327db7; }
.difference-intro { position: sticky; top: 105px; }
.difference-intro h2 { font-size: clamp(36px, 4vw, 50px); }
.difference-intro > p:last-child { margin: 17px 0 0; max-width: 370px; color: #647487; font-size: 14px; line-height: 1.8; }
.difference-list { border-top: 1px solid #d3dce4; }
.difference-item { display: grid; grid-template-columns: 40px 1fr 28px; gap: 15px; padding: 22px 0; border-bottom: 1px solid #d3dce4; }
.difference-icon { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid #c5d3df; border-radius: 10px; color: #1975bb; background: rgba(255,255,255,.55); font-family: Georgia, serif; font-size: 20px; }
.difference-item h3 { margin: 1px 0 5px; font-size: 15px; letter-spacing: -.025em; }
.difference-item p { margin: 0; color: #68798b; font-size: 12px; line-height: 1.65; }
.item-index { padding-top: 4px; color: #98a6b2; font: 10px ui-monospace, monospace; }
.how-section { padding-top: 100px; padding-bottom: 106px; }
.compact-heading { margin-bottom: 28px; }
.compact-heading h2 { font-size: clamp(31px, 3.5vw, 42px); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.step-card { position: relative; padding: 22px 24px 24px 0; }
.step-card + .step-card { padding-left: 24px; border-left: 1px solid var(--line); }
.step-card > span { color: #3884bc; font: 700 11px ui-monospace, monospace; }
.step-card h3 { margin: 18px 0 7px; font-size: 16px; }
.step-card p { max-width: 290px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.compat-section { padding: 82px 0; background: var(--night); color: white; }
.compat-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 25px 70px; align-items: start; }
.compat-layout .eyebrow { color: var(--sky); }
.compat-layout h2 { color: white; font-size: clamp(31px, 3.7vw, 43px); }
.compat-lead { max-width: 390px; margin: 14px 0 0; color: #9eafbe; font-size: 13px; line-height: 1.75; }
.compat-facts { border-top: 1px solid rgba(255,255,255,.17); }
.compat-facts > div { display: grid; grid-template-columns: 132px 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.13); font-size: 11px; }
.compat-facts span { color: #8ea3b4; }
.compat-facts strong { color: #e3edf5; font-weight: 650; line-height: 1.55; }
.preview-warning { grid-column: 1 / -1; display: flex; gap: 13px; align-items: flex-start; margin: 10px 0 0; padding: 15px 17px; border: 1px solid rgba(255,198,108,.24); border-radius: 9px; background: rgba(255,189,89,.07); }
.warning-symbol { flex: 0 0 21px; height: 21px; display: grid; place-items: center; border: 1px solid rgba(255,196,100,.55); border-radius: 50%; color: #ffcb78; font-size: 12px; font-weight: 800; }
.preview-warning p { margin: 0; color: #c7d1da; font-size: 11px; line-height: 1.75; }
.compat-actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 21px; }
.button-dark { color: var(--night); background: white; }
.button-dark:hover { background: #e8f7ff; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: #b7cad9; font-size: 12px; font-weight: 680; }
.site-footer { background: #061321; color: #a4b3c0; }
.footer-inner { width: min(var(--wrap), 100% - 56px); min-height: 88px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.footer-brand { color: #e8f0f5; font-size: 14px; }.footer-brand .brand-mark { width: 28px; height: 28px; font-size: 20px; border: 1px solid rgba(255,255,255,.12); }
.footer-brand .brand-light { color: #9aabba; }
.footer-inner p { margin: 0; color: #718394; font-size: 10px; }
.footer-inner > a:last-child { color: #bdd5e4; font-size: 11px; font-weight: 650; }

@media (max-width: 900px) {
  .desktop-nav { gap: 17px; }
  .hero-inner { gap: 38px; grid-template-columns: .9fr 1.1fr; padding-top: 70px; }
  .hero h1 { font-size: clamp(44px, 7vw, 64px); }
  .difference-layout { gap: 45px; }
  .demo-card-wide { grid-template-columns: .75fr 1.25fr; }
}
@media (max-width: 700px) {
  .site-header { height: 64px; padding: 0 17px; }
  .brand { font-size: 15px; gap: 8px; }
  .brand-mark { width: 30px; height: 30px; font-size: 22px; border-radius: 10px; }
  .desktop-nav { display: none; }
  .header-actions { gap: 9px; }
  .header-github { font-size: 0; width: 30px; height: 30px; justify-content: center; border: 1px solid var(--line); border-radius: 50%; }
  .header-github span:last-child { font-size: 14px; }
  .language-picker select { max-width: 89px; font-size: 11px; }
  .hero { min-height: 0; }
  .hero-inner { min-height: 0; padding: 63px 22px 47px; display: flex; flex-direction: column; align-items: stretch; gap: 39px; }
  .hero h1 { font-size: clamp(48px, 13vw, 66px); }
  .hero-description { font-size: 13px; }
  .hero-actions { margin-top: 23px; gap: 17px; }
  .button { min-height: 42px; padding: 0 13px; font-size: 12px; }
  .hero-meta { margin-top: 22px; }
  .hero-visual { transform: none; padding: 8px; }
  .visual-topline { font-size: 9px; }
  .hero-bottomline { padding: 0 23px 17px; font-size: 9px; }
  .section-wrap { width: calc(100% - 40px); }
  .feature-section { padding-top: 72px; padding-bottom: 70px; }
  .section-heading { margin-bottom: 27px; }
  .section-heading h2 { font-size: 36px; }
  .section-heading > p:last-child { font-size: 13px; }
  .mobile-break { display: initial; }
  .demo-grid { grid-template-columns: 1fr; gap: 13px; }
  .demo-card-wide { display: flex; }
  .demo-copy { padding: 21px 20px 14px; }
  .demo-copy h3 { font-size: 18px; }
  .demo-copy p { min-height: 0; }
  .demo-media, .demo-card-wide .demo-media { margin: 8px 12px 12px; }
  .demo-card-wide .demo-media { order: 2; }
  .demo-disclaimer { font-size: 9px; }
  .catalog-heading { margin-top: 52px; padding-top: 24px; }
  .catalog-grid { grid-template-columns: 1fr; gap: 9px; }
  .catalog-card { min-height: 0; padding: 18px; }
  .catalog-card p { font-size: 12px; }
  .difference-section { padding: 68px 0; }
  .difference-layout { grid-template-columns: 1fr; gap: 34px; }
  .difference-intro { position: static; }
  .difference-intro h2 { font-size: 39px; }
  .difference-intro > p:last-child { font-size: 13px; }
  .difference-item { grid-template-columns: 36px 1fr 22px; gap: 11px; padding: 18px 0; }
  .difference-item p { font-size: 11px; }
  .how-section { padding-top: 72px; padding-bottom: 72px; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card, .step-card + .step-card { padding: 18px 0; border-left: 0; }
  .step-card + .step-card { border-top: 1px solid var(--line); }
  .step-card h3 { margin: 10px 0 5px; }
  .step-card p { max-width: none; }
  .compat-section { padding: 67px 0; }
  .compat-layout { grid-template-columns: 1fr; gap: 22px; }
  .compat-layout h2 { font-size: 35px; }
  .compat-facts > div { grid-template-columns: 95px 1fr; gap: 11px; font-size: 10px; }
  .preview-warning { grid-column: auto; }
  .compat-actions { grid-column: auto; flex-wrap: wrap; gap: 15px; }
  .footer-inner { width: calc(100% - 40px); min-height: 85px; flex-wrap: wrap; padding: 17px 0; }
  .footer-inner p { order: 3; flex: 1 0 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}