:root {
  --ink: #172640;
  --muted: #6e7d96;
  --line: #dce6f3;
  --paper: #f5f8fd;
  --white: #fff;
  --blue: #3478f6;
  --blue-deep: #183d80;
  --blue-soft: #eaf1ff;
  --teal: #16846d;
  --shadow: 0 18px 48px rgba(25, 56, 103, .1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--paper); }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
.shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.topbar { display: flex; align-items: center; justify-content: space-between; min-height: 82px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 24px; font-weight: 800; letter-spacing: .01em; }
.brand img { width: 44px; height: 44px; }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-link { color: var(--muted); font-size: 15px; font-weight: 650; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid transparent; border-radius: 12px; font-size: 15px; font-weight: 700; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { color: #fff; background: var(--blue); box-shadow: 0 10px 22px rgba(52, 120, 246, .22); }
.button-secondary { color: var(--ink); border-color: var(--line); background: #fff; }
.button-quiet { color: var(--blue); background: var(--blue-soft); }
.hero { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(360px, .96fr); gap: 76px; align-items: center; min-height: 650px; padding: 70px 0 86px; }
.eyebrow { color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.hero h1 { max-width: 660px; margin: 20px 0 0; font-size: clamp(42px, 5.5vw, 72px); line-height: 1.08; letter-spacing: -.035em; }
.hero-lede { max-width: 570px; margin: 26px 0 0; color: var(--muted); font-size: 19px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-meta { display: block; margin-top: 16px; color: var(--muted); font-size: 13px; }
.workspace { min-height: 420px; padding: 28px; border: 1px solid #28549a; border-radius: 24px; color: #fff; background: linear-gradient(145deg, #173f82, #0d2851); box-shadow: 0 24px 56px rgba(16, 51, 108, .24); }
.workspace-head, .workspace-footer { display: flex; justify-content: space-between; align-items: center; }
.workspace-label { color: #c7d8f2; font-size: 12px; font-weight: 750; letter-spacing: .14em; }
.live-pill { padding: 6px 10px; border-radius: 999px; color: #baf0da; background: rgba(186, 240, 218, .12); font-size: 11px; font-weight: 700; }
.chart { display: flex; align-items: flex-end; gap: 10px; height: 226px; margin-top: 40px; padding: 20px 18px 0; border-bottom: 1px solid rgba(255,255,255,.16); background: repeating-linear-gradient(to bottom, transparent 0, transparent 52px, rgba(255,255,255,.09) 53px); }
.bar { flex: 1; min-height: 20px; border-radius: 8px 8px 0 0; background: #7eb2ff; }
.workspace-footer { margin-top: 24px; }
.metric-label { display: block; color: #c7d8f2; font-size: 12px; }
.metric-value { display: block; margin-top: 6px; font-size: 19px; font-weight: 750; }
.metric-value.safe { color: #baf0da; }
.section { padding: 20px 0 80px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 24px; }
.section h2 { margin: 0; font-size: 32px; letter-spacing: -.02em; }
.section-intro { max-width: 470px; margin: 0; color: var(--muted); line-height: 1.65; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { min-height: 205px; padding: 26px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.feature-number { color: var(--blue); font-size: 13px; font-weight: 800; }
.feature-card h3 { margin: 20px 0 10px; font-size: 21px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.65; }
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.flow-item { padding: 24px 0; border-top: 2px solid var(--blue); }
.flow-item strong { display: block; font-size: 18px; }
.flow-item span { display: block; margin-top: 8px; color: var(--muted); line-height: 1.6; }
.footer { display: flex; justify-content: space-between; gap: 16px; padding: 30px 0 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.page-card { width: min(640px, 100%); margin: 40px auto 80px; padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: var(--shadow); }
.page-card h1 { margin: 0; font-size: 32px; }
.page-card .lead { margin: 10px 0 26px; color: var(--muted); line-height: 1.6; }
.field { display: block; margin-top: 17px; }
.field-label { display: block; margin-bottom: 8px; color: var(--ink); font-size: 14px; font-weight: 700; }
.input { width: 100%; height: 48px; padding: 0 14px; border: 1px solid var(--line); border-radius: 11px; color: var(--ink); background: #fbfdff; outline: 0; }
.input:focus { border-color: #8eafe7; box-shadow: 0 0 0 4px rgba(52,120,246,.1); }
.code-row { display: grid; grid-template-columns: 1fr 148px; gap: 10px; }
.captcha-row { display: grid; grid-template-columns: 1fr 132px; gap: 10px; align-items: center; }
.captcha { width: 132px; height: 48px; object-fit: contain; border: 1px solid var(--line); border-radius: 11px; background: var(--blue-soft); cursor: pointer; }
.form-error { margin: 15px 0 0; color: #c24555; font-size: 14px; line-height: 1.5; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.form-actions .button { flex: 1; min-width: 180px; }
.form-foot { margin-top: 18px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.invite-chip { display: inline-flex; margin-top: 8px; padding: 7px 10px; border-radius: 8px; color: var(--blue); background: var(--blue-soft); font-weight: 700; }
.download-layout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.download-card { min-height: 280px; padding: 26px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.platform-icon { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 15px; color: #fff; font-weight: 800; }
.platform-icon.android { background: #43a562; }.platform-icon.ios { background: #1d2533; font-size: 22px; }.platform-icon.web { background: var(--blue); }
.download-card h3 { margin: 18px 0 8px; font-size: 20px; }.download-card p { min-height: 72px; margin: 0; color: var(--muted); line-height: 1.6; }.download-card .button { width: 100%; margin-top: 20px; }
.steps { display: grid; gap: 10px; margin-top: 18px; padding: 16px; border-radius: 11px; background: var(--blue-soft); }.step { display: flex; gap: 8px; align-items: center; color: var(--ink); font-size: 13px; }.step b { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: var(--blue); background: #fff; }
.notice { margin-top: 16px; padding: 14px 16px; border-radius: 11px; color: var(--muted); background: #fff; font-size: 13px; line-height: 1.6; }
.toast { position: fixed; z-index: 10; right: 20px; bottom: 20px; max-width: min(360px, calc(100% - 40px)); padding: 12px 16px; border-radius: 10px; color: #fff; background: #1d2b43; box-shadow: var(--shadow); }
@media (max-width: 760px) { .shell { width: min(100% - 32px, 620px); }.topbar { min-height: 70px; }.nav-link { display: none; }.hero { grid-template-columns: 1fr; gap: 36px; min-height: auto; padding: 48px 0 64px; }.hero h1 { font-size: 46px; }.hero-lede { font-size: 17px; }.workspace { min-height: 350px; }.chart { height: 180px; }.feature-grid, .flow, .download-layout { grid-template-columns: 1fr; }.section-head { display: block; }.section-intro { margin-top: 12px; }.footer { flex-direction: column; }.page-card { margin: 24px auto 50px; padding: 24px; }.code-row { grid-template-columns: 1fr 126px; }.captcha-row { grid-template-columns: 1fr 112px; }.captcha { width: 112px; } }