:root {
  color-scheme: light;
  --paper: #faf7f1;
  --paper-raised: #f1ece3;
  --ink: #191612;
  --muted: #68635d;
  --line: #d9d2c8;
  --brand: #7c5af6;
  --brand-hover: #6849d8;
  --brand-pressed: #5032bc;
  --brand-soft: #f7f4fe;
  --brand-soft-2: #eae5ff;
  --brand-soft-3: #ddd3ff;
  --dark: #19161d;
  --dark-muted: #c1b9c8;
  --serif: Georgia, 'Noto Serif SC', 'Songti SC', SimSun, serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { text-decoration-color: var(--brand); }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 5px; border-radius: 1px; }
::selection { background: var(--brand-soft-3); color: var(--ink); }
.container { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; left: 12px; top: -100px; z-index: 10; padding: 8px 16px; background: var(--ink); color: #fff; }
.skip-link:focus { top: 12px; }
.site-header { position: relative; padding: 27px 0; }
.header-inner { display: flex; align-items: center; gap: 32px; }
.wordmark { display: inline-flex; align-items: baseline; gap: 5px; text-decoration: none; font: 26px/1 var(--serif); white-space: nowrap; }
.wordmark em { color: var(--brand); font-weight: 400; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: 27px; margin-left: auto; font-size: 14px; }
.site-nav a { text-decoration: none; white-space: nowrap; }
.site-nav a:hover { text-decoration: underline; }
.header-actions { display: flex; align-items: center; gap: 20px; font-size: 13px; }
.language-link { text-decoration: none; white-space: nowrap; }
.language-link:hover { text-decoration: underline; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 10px 23px; border: 1px solid var(--ink); border-radius: 0; color: var(--ink); background: transparent; font-size: 15px; font-weight: 600; line-height: 1.4; text-decoration: none; transition: background .15s, border-color .15s, color .15s; }
.button:hover { background: var(--paper-raised); text-decoration: none; }
.button:active { background: var(--line); }
.button-primary { border-color: var(--brand); background: var(--brand); color: #fff; }
.button-primary:hover { border-color: var(--brand-hover); background: var(--brand-hover); }
.button-primary:active { border-color: var(--brand-pressed); background: var(--brand-pressed); }
.button-ink { background: var(--ink); color: var(--paper); }
.button-ink:hover { background: #36312e; color: #fff; }
.button-small { min-height: 38px; padding: 7px 16px; font-size: 13px; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: transparent; padding: 11px 9px; cursor: pointer; }
.menu-toggle span { display: block; height: 1px; background: var(--ink); margin: 5px 0; }
.eyebrow { margin: 0 0 24px; font-size: 11px; line-height: 1.5; font-weight: 500; letter-spacing: .23em; text-transform: uppercase; }
.hero { padding: 68px 0 0; }
.hero h1 { margin: 0 0 18px; font: 400 clamp(56px, 6.9vw, 94px)/1.03 var(--serif); letter-spacing: -.05em; }
.hero h1 em { color: var(--brand); font-weight: 400; }
.hero h1 .ink-emphasis { color: var(--ink); }
:lang(zh-CN) .hero h1 { line-height: 1.28; letter-spacing: -.05em; font-size: clamp(45px, 5.8vw, 78px); }
.hero-copy { max-width: 735px; color: var(--muted); font-size: 19px; line-height: 1.75; }
.hero-copy p { margin: 0; }
.hero-copy p + p { margin-top: 7px; }
.hero-copy .value-proposition { color: var(--ink); font-size: 21px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 31px 0 46px; }
.concept { margin: 0; }
.concept-image { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #f1ece3; }
.concept figcaption { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; color: var(--muted); font-size: 12px; }
.caption-tag { white-space: nowrap; }
.host-strip { padding: 50px 0 64px; text-align: center; border-bottom: 1px solid var(--line); }
.host-strip p { margin: 0 0 17px; color: var(--muted); font-size: 13px; }
.host-names { display: flex; justify-content: center; flex-wrap: wrap; column-gap: 32px; row-gap: 13px; font-size: 16px; }
.host-names a { text-decoration: none; }
.host-names a:hover { text-decoration: underline; }
.host-names .primary-host { font-weight: 650; }
.section { padding: 88px 0; }
.section h2 { margin: 0 0 24px; font: 400 clamp(35px, 4.4vw, 54px)/1.2 var(--serif); letter-spacing: -.035em; }
:lang(zh-CN) .section h2 { line-height: 1.4; font-size: clamp(30px, 3.5vw, 44px); }
.why-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 85px; align-items: start; }
.why-copy { padding-top: 5px; }
.why-copy p { margin: 0; color: var(--muted); font-size: 19px; }
.why-copy p + p { margin-top: 18px; }
.why-link { display: inline-block; margin-top: 22px; font-size: 14px; }
.capabilities { background: var(--dark); color: var(--paper); }
.capabilities .eyebrow { color: var(--dark-muted); }
.capabilities .section-intro { margin: -8px 0 36px; color: var(--dark-muted); max-width: 690px; }
.capability-grid { display: grid; grid-template-columns: 1fr 1fr; }
.capability-card { padding: 32px 35px 37px 0; border-top: 1px solid #48404c; }
.capability-card:nth-child(even) { padding-left: 35px; padding-right: 0; border-left: 1px solid #48404c; }
.card-number { display: block; margin: 0 0 17px; color: #b49fff; font: italic 28px/1 var(--serif); }
.capability-card h3 { margin: 0 0 10px; font-size: 19px; font-weight: 600; line-height: 1.5; }
.capability-card p { margin: 0; max-width: 480px; color: var(--dark-muted); line-height: 1.7; }
.quick-intro { margin: -8px 0 31px; color: var(--muted); }
.host-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; margin-bottom: 40px; }
.host-link { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 17px 18px; border: 1px solid var(--line); color: var(--ink); font-size: 15px; line-height: 1.5; text-decoration: none; transition: background .15s; }
.host-link:hover { background: var(--paper-raised); text-decoration: none; }
.host-link.is-primary { border-color: #c5b4ee; background: var(--brand-soft); }
.host-link.is-primary:hover { background: var(--brand-soft-2); }
.host-link small { display: block; color: var(--muted); font-size: 11px; margin-top: 3px; }
.host-link .arrow { font-size: 20px; color: var(--muted); }
.start-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; padding: 0; margin: 0; list-style: none; }
.start-step { border-top: 2px solid var(--ink); padding-top: 18px; }
.start-number { color: var(--brand); font: 36px/1 var(--serif); }
.start-step h3 { margin: 16px 0 8px; font-size: 16px; line-height: 1.5; }
.start-step p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.guide-note { margin: 25px 0 0; color: var(--muted); font-size: 12px; }
.closing { padding: 0 0 78px; }
.closing-inner { padding: 43px 48px; border: 1px solid var(--brand-soft-3); background: var(--brand-soft); }
.closing h2 { margin: 0 0 12px; font: 400 clamp(30px, 4vw, 47px)/1.25 var(--serif); letter-spacing: -.035em; }
:lang(zh-CN) .closing h2 { line-height: 1.5; }
.closing p { margin: 0 0 24px; color: var(--muted); }
.site-footer { padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
@media (min-width: 1500px) { .hero { padding-top: 90px; } }
@media (max-width: 900px) {
  .container { width: calc(100% - 48px); }
  .header-inner { gap: 18px; }
  .site-nav { gap: 18px; }
  .hero { padding-top: 48px; }
  .why-grid { gap: 42px; }
  .section { padding: 65px 0; }
  .host-picker { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .container { width: calc(100% - 36px); }
  .site-header { padding: 18px 0; }
  .wordmark { font-size: 24px; }
  .header-inner { flex-wrap: wrap; gap: 14px; }
  .header-actions { margin-left: auto; gap: 13px; }
  .header-github { display: none; }
  .menu-toggle { display: block; }
  .site-nav { display: none; flex-basis: 100%; order: 3; margin: 2px 0 0; padding: 15px 0; border-top: 1px solid var(--line); justify-content: flex-start; flex-wrap: wrap; gap: 22px; }
  .site-nav.is-open { display: flex; }
  .hero { padding-top: 38px; }
  .eyebrow { font-size: 10px; letter-spacing: .16em; margin-bottom: 22px; }
  .hero h1 { font-size: clamp(42px, 9.5vw, 64px); line-height: 1.12; letter-spacing: -.055em; }
  :lang(zh-CN) .hero h1 { font-size: clamp(37px, 9.6vw, 58px); line-height: 1.4; }
  .hero-copy { font-size: 16px; line-height: 1.8; }
  .hero-copy .value-proposition { font-size: 18px; }
  .hero-actions { gap: 10px; margin: 27px 0 32px; }
  .button { padding: 11px 17px; font-size: 14px; }
  .concept-image { aspect-ratio: 1.65; object-fit: cover; }
  .concept figcaption { font-size: 11px; gap: 10px; }
  .host-strip { padding: 35px 0 43px; text-align: left; }
  .host-names { justify-content: flex-start; gap: 12px 24px; font-size: 14px; }
  .section { padding: 54px 0; }
  .section h2 { font-size: 37px; }
  :lang(zh-CN) .section h2 { font-size: 30px; }
  .why-grid { grid-template-columns: 1fr; gap: 8px; }
  .why-copy p { font-size: 17px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card, .capability-card:nth-child(even) { padding: 25px 0 28px; border-left: none; }
  .capability-card h3 { font-size: 18px; }
  .capability-card p { font-size: 15px; }
  .host-picker { gap: 9px; }
  .host-link { padding: 13px 12px; font-size: 13px; }
  .host-link small { font-size: 10px; }
  .start-steps { grid-template-columns: 1fr; gap: 27px; }
  .start-step { display: grid; grid-template-columns: 32px 1fr; column-gap: 12px; padding-top: 15px; }
  .start-number { grid-row: 1 / 3; font-size: 30px; }
  .start-step h3 { margin: 1px 0 5px; }
  .closing { padding-bottom: 48px; }
  .closing-inner { padding: 28px 24px; }
  .closing h2 { font-size: 31px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
}
@media (max-width: 359px) { .host-picker { grid-template-columns: 1fr; } .hero h1 { font-size: 38px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }