:root { --ink: #172337; --muted: #667085; --coral: #ff5c68; --orange: #ff9b54; --rose: #f598b5; --line: #e6e7eb; --paper: #fffaf8; --panel: #fff; --navy: #142238; --radius: 18px; --shadow: 0 18px 50px rgb(41 27 35 / .10); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0px; color: var(--ink); background: linear-gradient(135deg, rgb(248, 252, 253) 0px, rgb(255, 248, 245) 50%, rgb(253, 227, 217) 100%); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif; line-height: 1.65; }
button, input { font: inherit; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 1000; padding: 8px 12px; background: rgb(255, 255, 255); color: var(--ink); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.topbar { position: sticky; top: 0px; z-index: 50; height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 0px 28px; border-bottom: 1px solid rgba(23, 35, 55, 0.08); background: rgba(255, 250, 248, 0.88); backdrop-filter: blur(18px); }
.brand { display: flex; align-items: center; gap: 11px; color: inherit; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--navy); color: rgb(255, 255, 255); font-size: 12px; font-weight: 800; letter-spacing: 0.05em; }
.brand strong, .brand small { display: block; line-height: 1.2; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 12px; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; width: min(300px, 32vw); padding: 8px 12px; border: 1px solid var(--line); border-radius: 12px; background: rgb(255, 255, 255); }
.search:focus-within { border-color: var(--coral); box-shadow: rgba(255, 92, 104, 0.12) 0px 0px 0px 3px; }
.search input { width: 100%; border: 0px; outline: 0px; background: transparent; color: var(--ink); }
.menu-button { display: none; border: 0px; border-radius: 10px; padding: 9px 13px; background: var(--navy); color: rgb(255, 255, 255); }
.shell { display: grid; grid-template-columns: 260px minmax(0px, 1fr); max-width: 1580px; margin: 0px auto; }
.sidebar { position: sticky; top: 72px; height: calc(100dvh - 72px); padding: 32px 22px 22px; border-right: 1px solid rgba(23, 35, 55, 0.08); background: rgba(255, 255, 255, 0.46); overflow: auto; }
.sidebar-head p, .kicker { text-transform: uppercase; letter-spacing: 0.14em; font-size: 11px; font-weight: 800; color: var(--coral); }
.sidebar-head strong { font-size: 18px; }
.sidebar nav { display: grid; gap: 4px; margin-top: 26px; }
.sidebar nav a { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border-radius: 11px; color: rgb(75, 85, 101); text-decoration: none; font-size: 14px; transition: background 0.2s, color 0.2s, transform 0.2s; }
.sidebar nav a:hover { transform: translateX(3px); }
.sidebar nav a.active { background: rgb(255, 255, 255); color: var(--ink); box-shadow: rgba(24, 34, 53, 0.08) 0px 6px 22px; }
.sidebar nav small { color: rgb(161, 167, 178); font-variant-numeric: tabular-nums; }
.sidebar-note { margin-top: 28px; padding: 16px; border: 1px solid rgba(23, 35, 55, 0.08); border-radius: 14px; background: rgba(255, 255, 255, 0.68); }
.sidebar-note span, .sidebar-note small, .sidebar-note strong { display: block; }
.sidebar-note span { color: var(--coral); font-size: 11px; font-weight: 800; }
.sidebar-note strong { margin: 5px 0px; font-size: 13px; }
.sidebar-note small { color: var(--muted); font-size: 11px; }
main { min-width: 0px; padding: 0px 48px 48px; }
.doc-section { scroll-margin-top: 92px; max-width: 1180px; margin: 0px auto; padding: 92px 0px; border-bottom: 1px solid rgba(23, 35, 55, 0.1); }
.hero { min-height: calc(100dvh - 72px); display: grid; grid-template-columns: minmax(0px, 0.8fr) minmax(480px, 1.2fr); align-items: center; gap: 54px; padding-top: 58px; }
.hero h1 { max-width: 700px; margin: 18px 0px 20px; font-size: clamp(42px, 5.2vw, 76px); line-height: 1.08; letter-spacing: -0.045em; }
.hero h1 em { color: var(--coral); font-style: normal; }
.lead { max-width: 620px; color: rgb(86, 97, 113); font-size: 18px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-points span { padding: 8px 14px; border: 1px solid rgba(23, 35, 55, 0.1); border-radius: 10px; background: rgb(255, 255, 255); font-size: 13px; font-weight: 700; }
.page-preview { display: block; width: 100%; padding: 0px; overflow: hidden; border: 0px; border-radius: var(--radius); background: rgb(255, 255, 255); box-shadow: var(--shadow); cursor: zoom-in; }
.page-preview img { display: block; width: 100%; height: auto; transition: transform 0.35s; }
.page-preview:hover img { transform: scale(1.012); }
.hero-preview { transform: rotate(1.2deg); }
.doc-section:not(.hero):not(.value) { display: grid; grid-template-columns: minmax(320px, 0.72fr) minmax(520px, 1.28fr); align-items: center; gap: 54px; }
.feature.reverse .section-copy { order: 2; }
.feature.reverse .page-preview { order: 1; }
.section-copy h2, .value h2 { max-width: 760px; margin: 8px 0px 16px; font-size: clamp(31px, 3.8vw, 52px); line-height: 1.14; letter-spacing: -0.035em; }
.section-copy > p:not(.kicker), .value-head > p:not(.kicker) { color: var(--muted); font-size: 17px; }
.steps { list-style: none; padding: 0px; margin: 28px 0px 0px; counter-reset: steps 0; }
.steps li { position: relative; display: grid; grid-template-columns: 80px 1fr; gap: 14px; padding: 15px 0px; }
.steps li::before { counter-increment: steps 1; content: "0" counter(steps); color: var(--coral); font-weight: 800; }
.steps b, .steps span { display: block; }
.steps span { grid-column: 2; color: var(--muted); font-size: 14px; }
.capabilities { display: grid; gap: 0px; margin-top: 24px; }
.capabilities div { padding: 14px 0px; border-bottom: 1px solid var(--line); }
.capabilities dt { font-weight: 800; }
.capabilities dd { margin: 4px 0px 0px; color: var(--muted); font-size: 14px; }
.mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.mini-grid article, .value-grid article { padding: 18px; border: 1px solid rgba(23, 35, 55, 0.08); border-radius: 14px; background: rgba(255, 255, 255, 0.72); }
.mini-grid p, .value-grid p { margin: 6px 0px 0px; color: var(--muted); font-size: 13px; }
.value { padding-bottom: 70px; }
.value-head { max-width: 760px; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 30px 0px 38px; }
.final-preview { max-width: 900px; margin: 0px auto; }
footer { max-width: 1180px; margin: 0px auto; padding: 28px 0px 10px; display: flex; justify-content: space-between; gap: 30px; color: var(--muted); font-size: 12px; }
footer strong { color: var(--ink); }
.no-results { max-width: 760px; margin: 80px auto; padding: 30px; border-radius: 14px; background: rgb(255, 255, 255); text-align: center; }
.lightbox { width: min(94vw, 1500px); max-height: 94vh; padding: 44px 12px 12px; border: 0px; border-radius: 18px; background: rgb(25, 28, 35); box-shadow: rgba(0, 0, 0, 0.45) 0px 40px 120px; }
.lightbox::backdrop { background: rgba(17, 19, 24, 0.78); backdrop-filter: blur(8px); }
.lightbox img { display: block; max-width: 100%; max-height: calc(-64px + 94vh); margin: auto; }
.lightbox button { position: absolute; top: 10px; right: 12px; padding: 7px 12px; border: 1px solid rgba(255, 255, 255, 0.24); border-radius: 9px; background: rgba(255, 255, 255, 0.1); color: rgb(255, 255, 255); cursor: pointer; }
.doc-section.search-hidden { display: none !important; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sidebar nav a, .page-preview img { transition: none; }
}
@media (max-width: 1050px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 60; top: 72px; left: 0px; width: min(320px, 86vw); transform: translateX(-105%); transition: transform 0.25s; background: rgb(255, 250, 248); box-shadow: rgba(20, 34, 56, 0.18) 30px 0px 80px; }
  .sidebar.open { transform: none; }
  .menu-button { display: block; }
  main { padding-inline: 28px; }
  .hero, .doc-section:not(.hero):not(.value) { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .feature.reverse .section-copy, .feature.reverse .page-preview { order: initial; }
  .hero-preview { transform: none; }
  .page-preview { max-width: 900px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .topbar { height: 64px; padding-inline: 16px; }
  .brand small { display: none; }
  .search { width: 42px; padding: 8px 10px; }
  .search input { position: absolute; width: 1px; height: 1px; opacity: 0; }
  .search:focus-within { position: absolute; left: 12px; right: 82px; width: auto; z-index: 2; }
  .search:focus-within input { position: static; width: 100%; height: auto; opacity: 1; }
  .sidebar { top: 64px; height: calc(100dvh - 64px); }
  main { padding-inline: 18px; }
  .doc-section { padding: 66px 0px; }
  .hero { padding-top: 50px; gap: 34px; }
  .hero h1 { font-size: 42px; }
  .lead { font-size: 16px; }
  .doc-section:not(.hero):not(.value) { grid-template-columns: minmax(0px, 1fr); gap: 32px; }
  .section-copy h2, .value h2 { font-size: 34px; }
  .value-grid, .mini-grid { grid-template-columns: 1fr; }
  .steps li { grid-template-columns: 50px 1fr; }
  .page-preview { border-radius: 12px; }
  footer { display: grid; }
  .lightbox { width: 98vw; padding-inline: 5px; }
}