:root {
  color: #172238;
  background: #f3f6f8;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  line-height: 1.55;
  --navy: #112342;
  --navy-2: #203a63;
  --ink: #172238;
  --muted: #617087;
  --line: #d8e0e8;
  --paper: #ffffff;
  --canvas: #f3f6f8;
  --gold: #f2b51d;
  --gold-dark: #765400;
  --teal: #16866e;
  --teal-soft: #e6f5f0;
  --shadow: 0 18px 45px rgba(18, 35, 65, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--canvas); color: var(--ink); }
body::before {
  position: fixed; inset: 0; z-index: -1; content: "";
  background-image: linear-gradient(rgba(17,35,66,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(17,35,66,.025) 1px, transparent 1px);
  background-size: 32px 32px;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--teal); }
button, a { -webkit-tap-highlight-color: transparent; }
p, h1, h2, h3, ul { margin-top: 0; }
p { color: var(--muted); line-height: 1.75; }
ul { padding-left: 20px; }
.section-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid rgba(216,224,232,.9);
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
}
.nav-shell { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; min-width: 250px; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 8px; background: var(--gold); color: var(--navy); font-size: 19px; font-weight: 950;
}
.brand-copy strong { display: block; color: var(--navy); font-size: 15px; }
.brand-copy small { display: block; color: var(--muted); font-size: 11px; }
.top-nav { display: flex; align-items: center; justify-content: flex-end; gap: 22px; font-size: 14px; font-weight: 750; }
.top-nav a[aria-current="page"] { color: var(--teal); }
.language-nav { display: flex; gap: 6px; margin-left: 6px; padding-left: 16px; border-left: 1px solid var(--line); }
.language-nav a { padding: 6px 7px; font-size: 12px; }

.hero { min-height: calc(100vh - 70px); display: grid; align-items: center; padding: 54px 0 36px; }
.hero-grid { display: grid; grid-template-columns: minmax(360px, .85fr) minmax(500px, 1.15fr); gap: 48px; align-items: center; }
.eyebrow { display: block; margin-bottom: 13px; color: var(--teal); font-size: 13px; font-weight: 900; letter-spacing: 0; text-transform: uppercase; }
.hero h1 { margin-bottom: 18px; color: var(--navy); font-size: clamp(40px, 5vw, 68px); line-height: 1.04; letter-spacing: 0; }
.hero h1 .product-en { display: block; margin-top: 12px; color: var(--navy-2); font-size: .42em; font-weight: 800; }
.hero-lead { max-width: 620px; color: #485971; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 28px; }
.button {
  min-height: 42px; display: inline-flex; align-items: center; justify-content: center;
  padding: 9px 17px; border: 1px solid var(--navy); border-radius: 6px;
  background: var(--navy); color: white; font: inherit; font-weight: 850; cursor: pointer;
}
.button:hover { background: var(--navy-2); color: white; }
.button.secondary { background: white; color: var(--navy); }
.button.secondary:hover { border-color: var(--teal); color: var(--teal); }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge { display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: white; color: #41526a; font-size: 13px; font-weight: 750; }
.badge::before { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); content: ""; }
.badge.is-live::before { background: var(--teal); }

.paper-demo { position: relative; min-height: 500px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: center; }
.paper {
  position: relative; min-height: 420px; padding: 28px 26px;
  border: 1px solid #cfd7e0; background: white; box-shadow: var(--shadow);
}
.paper:nth-child(2) { transform: translateY(22px); }
.paper::after { position: absolute; inset: 7px; border: 1px solid #eef1f4; content: ""; pointer-events: none; }
.paper-head { position: relative; z-index: 1; margin-bottom: 24px; text-align: center; }
.paper-head strong { display: block; color: #1b2638; font-family: Georgia, serif; font-size: 16px; }
.paper-head small { color: #6a7484; font-size: 10px; }
.paper-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 22px; color: #606b7b; font-size: 9px; }
.paper-fields span { padding-bottom: 4px; border-bottom: 1px solid #9ca7b5; }
.paper-lines { display: grid; gap: 15px; }
.paper-line { display: grid; grid-template-columns: 20px 1fr; gap: 8px; color: #718095; font-size: 10px; }
.paper-line span:last-child { border-bottom: 1px dotted #9ca7b5; }
.paper-score { position: absolute; right: 26px; bottom: 24px; color: #566276; font-size: 10px; }
.paper-demo-caption {
  position: absolute; right: 18px; bottom: -4px; z-index: 2;
  padding: 9px 12px; border: 1px solid #d8e0e8; border-radius: 6px;
  background: white; color: var(--navy); box-shadow: 0 8px 24px rgba(18,35,65,.08); font-size: 12px; font-weight: 850;
}

.status-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.status-grid { display: grid; grid-template-columns: repeat(5, 1fr); }
.status-item { padding: 19px 20px; border-right: 1px solid var(--line); }
.status-item:last-child { border-right: 0; }
.status-item small { display: block; margin-bottom: 4px; color: var(--muted); font-size: 11px; }
.status-item strong { color: var(--navy); font-size: 14px; }

.page-section { padding: 74px 0; }
.page-section.alt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.section-heading { display: grid; grid-template-columns: .7fr 1.3fr; gap: 42px; align-items: end; margin-bottom: 34px; }
.section-heading h2 { margin-bottom: 0; color: var(--navy); font-size: clamp(28px, 3.3vw, 42px); line-height: 1.15; }
.section-heading p { max-width: 670px; margin-bottom: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-item { min-height: 210px; padding: 27px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.72); }
.feature-number { display: block; margin-bottom: 28px; color: var(--gold-dark); font-size: 12px; font-weight: 900; }
.feature-item h3 { margin-bottom: 9px; color: var(--navy); font-size: 19px; }
.feature-item p { margin-bottom: 0; font-size: 14px; }
.locale-note { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); color: #31455e; font-size: 12px; line-height: 1.75; }

.comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; box-shadow: 0 12px 32px rgba(18,35,65,.05); }
.comparison-table { width: 100%; min-width: 720px; border-collapse: collapse; }
.comparison-table th, .comparison-table td { padding: 17px 20px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison-table th { background: #f6f8fa; color: var(--navy); font-size: 13px; }
.comparison-table td { color: #526278; }
.comparison-table tr:last-child td { border-bottom: 0; }
.comparison-table td:first-child { width: 25%; color: #8b6710; font-weight: 850; }
.comparison-table td:nth-child(2) { width: 34%; }
.comparison-table td:nth-child(3) { color: var(--navy); font-weight: 700; }

.audience-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.audience-item { min-height: 175px; padding: 26px; background: white; }
.audience-item span { color: var(--teal); font-size: 12px; font-weight: 900; }
.audience-item h3 { margin: 18px 0 8px; color: var(--navy); }
.audience-item p { margin-bottom: 0; font-size: 14px; }

.privacy-band { display: grid; grid-template-columns: .9fr 1.1fr; gap: 54px; align-items: center; }
.privacy-panel { padding: 34px; border-left: 4px solid var(--teal); background: var(--teal-soft); }
.privacy-panel h2 { color: var(--navy); font-size: 34px; }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 24px; margin: 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 23px; color: #384c63; font-size: 14px; }
.check-list li::before { position: absolute; left: 0; color: var(--teal); font-weight: 950; content: "✓"; }

.roadmap { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.roadmap::before { position: absolute; top: 13px; right: 0; left: 0; height: 1px; background: var(--line); content: ""; }
.roadmap-step { position: relative; padding-top: 38px; }
.roadmap-marker { position: absolute; top: 7px; left: 0; width: 13px; height: 13px; border: 3px solid var(--canvas); border-radius: 50%; background: #94a1b1; box-shadow: 0 0 0 1px #94a1b1; }
.roadmap-step.current .roadmap-marker { background: var(--teal); box-shadow: 0 0 0 1px var(--teal); }
.roadmap-step.planned .roadmap-marker { background: var(--gold); box-shadow: 0 0 0 1px var(--gold); }
.roadmap-status { color: var(--muted); font-size: 11px; font-weight: 850; text-transform: uppercase; }
.roadmap-step h3 { margin: 5px 0 14px; color: var(--navy); font-size: 23px; }
.roadmap-step li { margin-bottom: 7px; color: #526278; font-size: 14px; }

.updates-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 48px; }
.update-entry { display: grid; grid-template-columns: 96px 1fr; gap: 18px; padding: 20px 0; border-top: 1px solid var(--line); }
.update-entry time, .release-meta time { color: var(--muted); font-size: 12px; }
.update-entry h3 { margin-bottom: 5px; color: var(--navy); font-size: 18px; }
.update-entry p { margin-bottom: 0; font-size: 14px; }
.release-list { border-top: 1px solid var(--line); }
.release-row { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.release-row.is-latest { border-left: 3px solid var(--gold); padding-left: 18px; }
.release-meta strong { display: block; color: var(--navy); font-size: 14px; overflow-wrap: anywhere; }
.release-row ul { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 22px; margin: 0; color: #526278; font-size: 13px; }

.test-panel { display: grid; grid-template-columns: 1fr .9fr; gap: 38px; padding: 38px; border: 1px solid #2a4166; background: var(--navy); color: white; }
.test-panel h2 { color: white; font-size: 34px; }
.test-panel p { color: #c7d2e3; }
.test-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; align-self: stretch; background: rgba(255,255,255,.16); }
.test-fact { padding: 17px; background: var(--navy); }
.test-fact small { display: block; color: #9eb0c9; font-size: 11px; }
.test-fact strong { display: block; margin-top: 4px; color: white; font-size: 14px; }

.site-footer { padding: 30px 0 38px; border-top: 1px solid var(--line); background: white; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; }
.footer-brand strong { color: var(--navy); }
.footer-brand p, .filing-line { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 16px; font-size: 12px; font-weight: 750; }

@media (max-width: 980px) {
  .top-nav > a:not(.nav-priority), .brand-copy small { display: none; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; }
  .paper-demo { width: min(700px, 100%); margin: 0 auto; }
  .status-grid { grid-template-columns: repeat(3, 1fr); }
  .status-item { border-bottom: 1px solid var(--line); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-band, .updates-layout, .test-panel { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .section-shell { width: min(100% - 28px, 1180px); }
  .nav-shell { min-height: 62px; }
  .brand { min-width: 0; }
  .brand-mark { width: 34px; height: 34px; }
  .top-nav { gap: 8px; }
  .top-nav > a { display: none; }
  .language-nav { margin-left: 0; padding-left: 8px; }
  .hero { padding: 38px 0 28px; }
  .hero h1 { font-size: 39px; }
  .hero-lead { font-size: 16px; }
  .paper-demo { min-height: 390px; gap: 9px; }
  .paper { min-height: 340px; padding: 20px 14px; }
  .paper:nth-child(2) { transform: translateY(12px); }
  .paper-fields { grid-template-columns: 1fr; gap: 5px; }
  .paper-lines { gap: 11px; }
  .paper-demo-caption { right: 8px; bottom: 2px; }
  .status-grid { grid-template-columns: 1fr 1fr; }
  .status-item { padding: 15px 14px; }
  .page-section { padding: 54px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 12px; }
  .feature-grid, .audience-grid, .roadmap { grid-template-columns: 1fr; }
  .feature-item { min-height: auto; }
  .roadmap { gap: 12px; }
  .roadmap::before { top: 0; bottom: 0; left: 6px; width: 1px; height: auto; }
  .roadmap-step { padding: 0 0 22px 32px; }
  .roadmap-marker { top: 5px; }
  .privacy-panel { padding: 25px; }
  .check-list { grid-template-columns: 1fr; }
  .release-row, .update-entry { grid-template-columns: 1fr; gap: 8px; }
  .release-row ul { grid-template-columns: 1fr; }
  .test-panel { padding: 25px; }
  .test-facts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}