:root {
  --bg: #f5f6f8;
  --paper: #ffffff;
  --ink: #15171a;
  --muted: #6f747d;
  --line: #dfe2e7;
  --blue: #1677ff;
  --blue-dark: #0c5acb;
  --green: #25a466;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", "Segoe UI", sans-serif; letter-spacing: 0; }
a { color: inherit; text-decoration: none; }
.shell { width: min(var(--max), calc(100% - 44px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; height: 64px; border-bottom: 1px solid rgba(223,226,231,.92); background: rgba(245,246,248,.94); backdrop-filter: blur(16px); }
.nav-inner { height: 100%; display: flex; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 720; white-space: nowrap; }
.brand img { border-radius: 50%; object-fit: cover; background: #dceaff; }
.nav-links { display: flex; align-items: center; gap: 25px; color: var(--muted); font-size: 13px; }
.nav-links a:hover, .nav-link:hover, .text-button:hover { color: var(--blue); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 16px; font-size: 13px; }
.nav-link { color: var(--muted); }
.nav-button, .primary-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 6px; background: var(--blue); color: #fff; font-weight: 680; }
.nav-button { min-height: 34px; padding: 0 14px; }
.nav-button:hover, .primary-button:hover { background: var(--blue-dark); }
.hero { min-height: 630px; display: grid; grid-template-columns: minmax(0, .94fr) minmax(420px, 1.06fr); align-items: center; gap: 40px; padding: 70px 0 54px; }
.hero-copy { min-width: 0; }
.eyebrow { margin: 0 0 16px; color: var(--muted); font-size: 11px; line-height: 1.3; font-weight: 750; letter-spacing: .08em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 580px; margin-bottom: 18px; font-size: clamp(52px, 8vw, 92px); line-height: .97; letter-spacing: -.03em; font-weight: 740; }
.hero-lede { max-width: 510px; margin-bottom: 12px; font-size: 24px; line-height: 1.28; letter-spacing: -.02em; }
.hero-note { max-width: 620px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: 20px; margin-top: 30px; }
.primary-button { min-height: 44px; padding: 0 18px; }
.text-button { color: var(--blue); font-weight: 650; }
.trust-row { display: flex; flex-wrap: wrap; gap: 16px 22px; margin-top: 44px; color: var(--muted); font-size: 12px; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row i, .live-dot { width: 7px; height: 7px; display: inline-block; border-radius: 50%; background: var(--green); }
.hero-art { min-width: 0; }
.network-board { position: relative; min-height: 430px; overflow: hidden; border: 1px solid #cdd2da; background: #eaedf1; }
.network-board::before, .network-board::after { content: ""; position: absolute; border: 1px solid #cdd2da; border-radius: 50%; }
.network-board::before { width: 430px; height: 430px; left: calc(50% - 215px); top: calc(50% - 215px); }
.network-board::after { width: 280px; height: 280px; left: calc(50% - 140px); top: calc(50% - 140px); }
.network-line { position: absolute; left: 50%; top: 50%; width: 42%; height: 1px; background: #b9c1cd; transform-origin: left center; }
.line-a { transform: rotate(-27deg); }.line-b { transform: rotate(27deg); }.line-c { transform: rotate(153deg); }.line-d { transform: rotate(207deg); }
.node { position: absolute; display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #bdc6d3; border-radius: 50%; background: var(--paper); color: #434b57; font-size: 11px; font-weight: 760; box-shadow: 0 2px 8px rgba(18,27,39,.08); }
.node-hk { left: 15%; top: 25%; }.node-jp { right: 14%; top: 22%; }.node-us { right: 12%; bottom: 21%; }.node-sg { left: 15%; bottom: 18%; }
.core-node { position: absolute; left: 50%; top: 50%; width: 142px; height: 142px; transform: translate(-50%, -50%); display: grid; place-items: center; align-content: center; gap: 4px; border: 1px solid #b9c4d1; border-radius: 50%; background: var(--paper); box-shadow: 0 8px 22px rgba(18,27,39,.12); }
.core-node img { width: 49px; height: 49px; border-radius: 50%; object-fit: cover; }
.core-node strong { font-size: 16px; }.core-node small { color: var(--muted); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.art-caption { position: absolute; left: 18px; bottom: 15px; display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.pricing-section { padding: 52px 0 74px; border-top: 1px solid var(--line); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 34px; margin-bottom: 26px; }
.section-heading h2, .help-section h2 { margin-bottom: 0; font-size: clamp(30px, 4vw, 52px); line-height: 1.02; letter-spacing: -.025em; }
.section-heading > p { max-width: 285px; margin-bottom: 3px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.plan-card { min-width: 0; min-height: 520px; display: flex; flex-direction: column; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: 0 2px 10px rgba(18,27,39,.04); transition: transform .22s ease, box-shadow .22s ease; }
.plan-card:hover { transform: translateY(-3px); box-shadow: 0 9px 22px rgba(18,27,39,.09); }
.plan-card.is-sold-out { opacity: .58; }
.plan-top { display: flex; align-items: center; justify-content: space-between; min-height: 20px; }
.plan-kicker { color: var(--muted); font-size: 11px; font-weight: 760; letter-spacing: .08em; text-transform: uppercase; }
.plan-badge { padding: 4px 7px; border-radius: 4px; background: #e7f2ff; color: var(--blue-dark); font-size: 10px; font-weight: 720; }
.plan-card h3 { margin: 20px 0 9px; font-size: 23px; line-height: 1.18; letter-spacing: -.018em; }
.plan-headline { min-height: 58px; margin-bottom: 20px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.plan-price { display: flex; align-items: baseline; margin-bottom: 20px; font-size: 38px; font-weight: 740; letter-spacing: -.03em; }
.plan-price > span { margin-right: 4px; font-size: 17px; }.plan-price small { margin-left: 3px; color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: 0; }
.plan-features { display: grid; gap: 12px; margin: 0 0 24px; padding: 0; list-style: none; }
.plan-features li { display: flex; align-items: flex-start; gap: 9px; color: #4f5661; font-size: 12px; line-height: 1.48; }
.feature-icon { flex: 0 0 18px; color: var(--blue); font-size: 14px; line-height: 1.2; }.plan-features b { color: var(--ink); margin-right: 4px; }
.plan-form { display: grid; gap: 8px; margin-top: auto; }.plan-form input { width: 100%; min-height: 38px; border: 1px solid var(--line); border-radius: 5px; background: #fbfcfd; padding: 0 10px; color: var(--ink); font: inherit; font-size: 12px; outline: 0; }.plan-form input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(22,119,255,.12); }
.plan-action { min-height: 40px; width: 100%; border: 0; border-radius: 5px; background: var(--blue); color: #fff; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }.plan-action:hover { background: var(--blue-dark); }.plan-action.is-disabled { background: #dfe2e7; color: #747b85; cursor: not-allowed; }
.service-strip { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 16px; padding: 24px 0 28px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }.service-strip > div { display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: center; }.strip-icon { grid-row: span 2; display: grid; place-items: center; width: 35px; height: 35px; border: 1px solid var(--line); border-radius: 50%; color: var(--blue); font-size: 10px; font-weight: 760; }.service-strip strong { font-size: 13px; }.service-strip small { color: var(--muted); font-size: 11px; }.strip-arrow { color: #9aa1ab; }
.help-section { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 78px 0; }.help-links { display: grid; align-content: center; gap: 15px; }.help-links a { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--blue); font-size: 14px; font-weight: 650; }.help-links a span { font-size: 18px; }
.site-footer { display: flex; align-items: center; gap: 18px; padding: 22px 0 30px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }.site-footer span:nth-child(2) { flex: 1; }.site-footer a { color: var(--blue); }.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 52px; }.hero-art { max-width: 680px; width: 100%; }.plan-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }.plan-card:last-child:nth-child(odd) { grid-column: 1 / -1; }.section-heading { align-items: start; flex-direction: column; gap: 14px; }.section-heading > p { max-width: 480px; } }
@media (max-width: 640px) { .shell { width: min(100% - 28px, var(--max)); }.site-header { height: 58px; }.nav-inner { gap: 15px; }.nav-links { display: none; }.nav-actions { gap: 9px; font-size: 12px; }.nav-button { min-height: 32px; padding: 0 10px; }.hero { min-height: 0; gap: 32px; padding: 48px 0 48px; }.hero-lede { font-size: 21px; }.hero-note { font-size: 13px; }.hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }.trust-row { gap: 10px 14px; margin-top: 30px; }.network-board { min-height: 330px; }.network-board::before { width: 330px; height: 330px; left: calc(50% - 165px); top: calc(50% - 165px); }.network-board::after { width: 220px; height: 220px; left: calc(50% - 110px); top: calc(50% - 110px); }.node { width: 42px; height: 42px; }.core-node { width: 116px; height: 116px; }.core-node img { width: 40px; height: 40px; }.pricing-section { padding: 40px 0 54px; }.plan-grid { grid-template-columns: 1fr; }.plan-card:last-child:nth-child(odd) { grid-column: auto; }.plan-card { min-height: 0; }.plan-headline { min-height: 0; }.service-strip { grid-template-columns: 1fr; gap: 14px; }.strip-arrow { display: none; }.help-section { grid-template-columns: 1fr; gap: 26px; padding: 54px 0; }.site-footer { align-items: flex-start; flex-wrap: wrap; gap: 8px 14px; }.site-footer span:nth-child(2) { flex-basis: 100%; order: 3; } }