:root {
  --navy: #10285a;
  --navy-deep: #071737;
  --blue: #245ad7;
  --teal: #078b8a;
  --cyan: #70dce3;
  --ink: #13203b;
  --muted: #61708a;
  --line: #dce3ed;
  --surface: #f3f6fb;
  --white: #fff;
  --max: 1240px;
  --pad: clamp(22px, 5vw, 72px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.shell { width: min(var(--max), calc(100% - 2 * var(--pad))); margin-inline: auto; }

.site-header {
  height: 78px;
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid rgba(16, 40, 90, .12);
  background: rgba(255, 255, 255, .93);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: inline-flex; align-items: baseline; gap: 10px; text-decoration: none; width: max-content; }
.brand span { color: var(--navy); font-size: 31px; font-weight: 850; letter-spacing: -.055em; }
.brand small { color: var(--teal); font-size: 10px; font-weight: 800; letter-spacing: .18em; }
.site-header nav { display: flex; gap: 34px; }
.site-header nav a, .header-action { font-size: 14px; font-weight: 650; text-decoration: none; }
.site-header nav a:hover, .header-action:hover { color: var(--blue); }
.header-action { justify-self: end; color: var(--blue); padding-bottom: 4px; border-bottom: 1px solid var(--blue); }

.hero { min-height: 700px; display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(42px, 6vw, 88px); align-items: center; padding-top: 76px; padding-bottom: 76px; }
.eyebrow { margin: 0 0 20px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: .13em; }
.eyebrow span { width: 26px; height: 2px; display: inline-block; background: currentColor; margin: 0 9px 3px 0; }
.hero h1 { max-width: 690px; margin: 0; color: var(--navy-deep); font-size: clamp(49px, 5vw, 76px); line-height: 1.1; letter-spacing: -.058em; }
.hero-lead { max-width: 680px; margin: 28px 0 0; color: #425371; font-size: clamp(18px, 1.55vw, 22px); line-height: 1.72; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.button { min-height: 50px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; text-decoration: none; border: 1px solid var(--blue); font-weight: 720; font-size: 15px; transition: transform .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--blue); color: #fff; }
.button.primary:hover { background: var(--navy); border-color: var(--navy); }
.button.secondary { color: var(--blue); background: #fff; }
.trust-list { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 31px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; }
.trust-list li::before { content: "✓"; color: var(--teal); font-weight: 800; margin-right: 7px; }

.workbench-preview { border: 1px solid #cfd8e6; border-radius: 18px; background: #fff; box-shadow: 0 35px 85px rgba(9, 31, 70, .17); overflow: hidden; transform: perspective(1200px) rotateY(-3deg) rotateX(1deg); }
.window-bar { height: 46px; display: flex; align-items: center; gap: 8px; padding: 0 16px; background: #f7f8fb; border-bottom: 1px solid var(--line); }
.window-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff5e57; }
.window-bar i:nth-child(2) { background: #febc2e; }
.window-bar i:nth-child(3) { background: #28c840; }
.window-bar span { margin-left: auto; margin-right: auto; color: #7c879a; font-size: 11px; }
.window-body { min-height: 490px; display: grid; grid-template-columns: 142px 1fr; }
.window-body aside { padding: 22px 13px; background: #f5f6f8; border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.window-body aside strong { margin: 12px 9px 2px; color: #a1a9b6; font-size: 9px; font-weight: 700; }
.window-body aside span { padding: 8px 9px; border-radius: 7px; font-size: 10px; }
.window-body aside span.active { background: var(--blue); color: #fff; font-weight: 700; }
.preview-main { padding: 31px 28px; }
.preview-kicker { margin: 0 0 8px; color: var(--blue); font-size: 10px; font-weight: 750; }
.preview-main h2 { margin: 0; font-size: 26px; letter-spacing: -.035em; }
.preview-main > p:not(.preview-kicker) { color: var(--muted); font-size: 11px; line-height: 1.65; }
.preview-progress { margin: 23px 0 17px; padding: 15px; border-radius: 11px; background: #eef3ff; }
.preview-progress span { display: block; margin-bottom: 8px; color: var(--navy); font-size: 11px; }
.preview-progress span b { color: var(--blue); font-size: 19px; }
.preview-progress em { display: block; height: 5px; border-radius: 5px; background: #d6dfef; }
.preview-progress em i { display: block; width: 62.5%; height: 100%; border-radius: inherit; background: var(--blue); }
.preview-card { margin-top: 10px; padding: 13px 14px; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 10px; border: 1px solid var(--line); border-radius: 10px; }
.preview-card > b { color: var(--blue); font-size: 12px; }
.preview-card div { display: flex; flex-direction: column; gap: 3px; }
.preview-card strong { font-size: 11px; }
.preview-card small { color: var(--muted); font-size: 8px; }
.preview-card > span { color: var(--teal); font-size: 8px; font-weight: 750; }
.preview-card.muted > span { color: #929dad; }

.signal-bar { background: var(--navy-deep); color: #fff; }
.signal-bar .shell { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.signal-bar p { margin: 0; color: #cdd7e9; }
.signal-bar p strong { color: var(--cyan); }
.signal-bar span { color: #9faec7; font-size: 13px; }

.section { padding-top: 116px; padding-bottom: 116px; }
.section-heading { max-width: 850px; }
.section-heading h2, .evidence-copy h2, .privacy-section h2, .release-section h2 { margin: 0; color: var(--navy-deep); font-size: clamp(39px, 4vw, 59px); line-height: 1.15; letter-spacing: -.048em; }
.section-heading > p:last-child, .evidence-copy > p:not(.eyebrow), .release-section > div > p:last-child { max-width: 750px; color: var(--muted); font-size: 18px; line-height: 1.7; }
.feature-grid { margin-top: 52px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-grid article { min-height: 290px; padding: 30px 27px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-grid article > span { color: var(--teal); font-size: 13px; font-weight: 800; }
.feature-grid h3 { margin: 53px 0 14px; font-size: 23px; letter-spacing: -.03em; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.72; }

.visual-section { background: linear-gradient(180deg, #f5f8fc 0%, #fff 100%); }
.diagram-grid { margin-top: 54px; display: grid; grid-template-columns: 1.16fr .84fr; gap: 24px; align-items: stretch; }
.diagram-panel { margin: 0; padding: clamp(26px, 3vw, 42px); border: 1px solid var(--line); background: rgba(255,255,255,.9); box-shadow: 0 24px 70px rgba(9,31,70,.08); }
.diagram-title > span { display: inline-block; margin-bottom: 14px; padding: 6px 10px; background: #eaf7f5; color: #087875; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.diagram-title h3 { margin: 0; color: var(--navy-deep); font-size: clamp(25px, 2.4vw, 34px); letter-spacing: -.035em; }
.diagram-title p { max-width: 650px; margin: 12px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.mind-map { min-height: 455px; margin-top: 28px; padding: 34px 24px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); gap: 112px 128px; position: relative; isolation: isolate; }
.mind-map::before { content: ""; position: absolute; inset: 18% 15%; z-index: -1; background: linear-gradient(90deg, transparent calc(50% - 1px), #cdd9ea calc(50% - 1px), #cdd9ea calc(50% + 1px), transparent calc(50% + 1px)), linear-gradient(0deg, transparent calc(50% - 1px), #cdd9ea calc(50% - 1px), #cdd9ea calc(50% + 1px), transparent calc(50% + 1px)); transform: rotate(45deg) scale(.74); }
.map-center { width: 172px; height: 172px; padding: 22px; display: flex; flex-direction: column; align-items: center; justify-content: center; position: absolute; left: 50%; top: 50%; z-index: 3; transform: translate(-50%, -50%); border-radius: 50%; background: linear-gradient(145deg, var(--navy), #183f8d); color: #fff; box-shadow: 0 20px 45px rgba(16,40,90,.24), 0 0 0 12px rgba(36,90,215,.08); text-align: center; }
.map-center small { color: var(--cyan); font-size: 8px; font-weight: 800; letter-spacing: .12em; }
.map-center strong { margin-top: 4px; font-size: 47px; letter-spacing: -.06em; }
.map-center span { color: #d8e2f2; font-size: 12px; }
.map-branch { min-height: 118px; padding: 18px 19px; border: 1px solid #d7e0ec; background: #fff; display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; align-content: center; position: relative; box-shadow: 0 12px 28px rgba(9,31,70,.06); }
.map-branch b { grid-row: 1 / 4; color: var(--teal); font-size: 11px; }
.map-branch strong { color: var(--navy-deep); font-size: 18px; }
.map-branch span { color: #425371; font-size: 12px; }
.map-branch small { color: #7b879a; font-size: 10px; }
.branch-business, .branch-ship { border-left: 3px solid var(--teal); }
.branch-build, .branch-adopt { border-right: 3px solid var(--blue); }

.flow-panel { background: var(--navy-deep); border-color: var(--navy-deep); color: #fff; }
.flow-panel .diagram-title > span { background: rgba(112,220,227,.12); color: var(--cyan); }
.flow-panel .diagram-title h3 { color: #fff; }
.flow-panel .diagram-title p { color: #afbed5; }
.value-flow { margin: 31px 0 0; padding: 0; list-style: none; position: relative; }
.value-flow::before { content: ""; position: absolute; left: 23px; top: 26px; bottom: 26px; width: 2px; background: linear-gradient(var(--cyan), rgba(112,220,227,.18)); }
.value-flow li { min-height: 79px; display: grid; grid-template-columns: 48px 1fr; gap: 15px; position: relative; }
.value-flow li:not(:last-child)::after { content: ""; width: 8px; height: 8px; position: absolute; left: 20px; bottom: 5px; border-right: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(45deg); }
.value-flow b { width: 48px; height: 48px; display: grid; place-items: center; z-index: 1; border: 1px solid rgba(112,220,227,.45); border-radius: 50%; background: var(--navy-deep); color: var(--cyan); font-size: 11px; }
.value-flow div { padding: 3px 0 20px; display: flex; flex-direction: column; gap: 6px; }
.value-flow strong { font-size: 17px; }
.value-flow span { color: #9fb0cb; font-size: 12px; line-height: 1.5; }

.workflow-section { background: var(--navy); color: #fff; }
.section-heading.inverse h2 { color: #fff; }
.section-heading.inverse > p:last-child { color: #b8c5d9; }
.workflow { margin: 58px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.22); border-left: 1px solid rgba(255,255,255,.22); }
.workflow li { min-height: 176px; padding: 27px; display: flex; gap: 18px; border-right: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); }
.workflow b { color: var(--cyan); font-size: 12px; }
.workflow h3 { margin: 0 0 9px; font-size: 20px; }
.workflow p { margin: 0; color: #afbed5; font-size: 14px; line-height: 1.55; }

.evidence-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 8vw; align-items: center; }
.evidence-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.evidence-tags span { padding: 8px 12px; background: #eaf7f5; color: #087875; font-size: 12px; font-weight: 700; }
.job-list { border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(9, 31, 70, .1); }
.job-list > div { padding: 23px 25px; border-bottom: 1px solid var(--line); position: relative; }
.job-list > div:last-child { border-bottom: 0; }
.job-list strong { font-size: 17px; }
.job-list > div > span { float: right; padding: 5px 9px; background: #edf2ff; color: var(--blue); font-size: 10px; font-weight: 750; border-radius: 999px; }
.job-list > div > span.domestic { background: #fff2e7; color: #bd6419; }
.job-list h3 { margin: 12px 0 7px; font-size: 17px; }
.job-list p { margin: 0; color: var(--muted); font-size: 12px; }

.privacy-section { background: var(--surface); }
.privacy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9vw; }
.privacy-points p { margin: 0; padding: 24px 0; display: grid; grid-template-columns: 180px 1fr; gap: 22px; border-bottom: 1px solid #d3dce9; }
.privacy-points p:first-child { padding-top: 4px; }
.privacy-points strong { font-size: 16px; }
.privacy-points span { color: var(--muted); font-size: 14px; line-height: 1.65; }

.release-section { display: grid; grid-template-columns: 1.2fr .8fr; gap: 7vw; align-items: end; }
.release-section .actions { justify-content: flex-end; }

footer { padding: 52px 0; background: var(--navy-deep); color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 30px; }
.footer-brand span { color: #fff; }
.footer-grid p { color: #aebbd0; }
.footer-grid nav { display: flex; gap: 22px; }
.footer-grid nav a { color: #c7d2e4; font-size: 13px; text-decoration: none; }
.footer-grid nav a:hover { color: var(--cyan); }

.info-header { border-bottom: 1px solid var(--line); }
.info-nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; }
.info-nav a:last-child { color: var(--blue); font-size: 14px; text-decoration: none; }
.info-page { max-width: 820px; margin: 0 auto; padding: 76px 24px 120px; }
.info-page .eyebrow { margin-bottom: 14px; }
.info-page h1 { margin: 0 0 22px; color: var(--navy-deep); font-size: clamp(42px, 5vw, 66px); letter-spacing: -.05em; }
.info-page .lead { color: var(--muted); font-size: 19px; line-height: 1.7; }
.info-page section { margin-top: 34px; padding: 26px 28px; background: var(--surface); border-left: 3px solid var(--teal); }
.info-page h2 { margin: 0 0 11px; font-size: 23px; }
.info-page h3 { margin: 22px 0 7px; font-size: 17px; }
.info-page p, .info-page li { color: #4f607c; font-size: 15px; line-height: 1.75; }
.info-page .back { display: inline-block; margin-top: 42px; color: var(--blue); font-weight: 700; }

@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; }
  .workbench-preview { max-width: 650px; transform: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .diagram-grid { grid-template-columns: 1fr; }
  .evidence-section { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-header { height: 68px; grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { min-height: 0; padding-top: 58px; }
  .hero h1 { font-size: 46px; }
  .window-body { grid-template-columns: 105px 1fr; min-height: 420px; }
  .window-body aside { padding: 13px 8px; }
  .preview-main { padding: 24px 18px; }
  .preview-card { grid-template-columns: 25px 1fr; }
  .preview-card > span { display: none; }
  .signal-bar .shell { padding: 22px 0; flex-direction: column; align-items: flex-start; }
  .feature-grid, .workflow { grid-template-columns: 1fr; }
  .mind-map { min-height: 650px; grid-template-columns: 1fr; grid-template-rows: none; gap: 14px; padding: 0; }
  .mind-map::before { display: none; }
  .map-center { width: auto; height: auto; min-height: 125px; position: static; transform: none; border-radius: 0; grid-row: 1; }
  .map-center strong { font-size: 38px; }
  .map-branch { min-height: 104px; }
  .branch-business, .branch-build, .branch-ship, .branch-adopt { border-right: 1px solid #d7e0ec; border-left: 3px solid var(--teal); }
  .feature-grid article { min-height: 220px; }
  .feature-grid h3 { margin-top: 32px; }
  .privacy-grid, .release-section { grid-template-columns: 1fr; }
  .privacy-points p { grid-template-columns: 1fr; gap: 7px; }
  .release-section .actions { justify-content: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .shell { width: calc(100% - 36px); }
  .header-action { display: none; }
  .hero h1 { font-size: 39px; }
  .button { width: 100%; }
  .workbench-preview { display: none; }
  .section { padding-top: 82px; padding-bottom: 82px; }
  .feature-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}