:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-tertiary: #eef0f3;
  --surface: #ffffff;
  --surface-strong: #fafbfc;
  --line: #e4e7eb;
  --line-strong: #d6dae0;
  --text: #1f2328;
  --muted: #656d76;
  --tertiary: #9198a0;
  --accent: #5b67f1;
  --accent-hover: #4a55e0;
  --accent-soft: #eef0ff;
  --purple: #8b94f5;
  --success: #2da44e;
  --success-soft: #dafbe3;
  --danger: #cf222e;
  --danger-soft: #ffebe9;
  --warning: #d4a72c;
  --shadow: 0 16px 36px rgba(31, 35, 40, .11), 0 4px 12px rgba(31, 35, 40, .05);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    linear-gradient(rgba(91,103,241,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91,103,241,.025) 1px, transparent 1px),
    radial-gradient(circle at 48% 0%, #f4f5ff 0, var(--bg) 48%);
  background-size: 52px 52px, 52px 52px, auto;
  overflow-x: hidden;
}
button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
button:disabled { cursor: default; opacity: .5; }

.ambient { position: fixed; border-radius: 50%; filter: blur(80px); pointer-events: none; opacity: .16; }
.ambient-one { width: 420px; height: 420px; background: var(--accent); top: -220px; right: 8%; }
.ambient-two { width: 360px; height: 360px; background: var(--purple); bottom: -220px; left: -100px; opacity: .1; }
.topbar {
  width: min(1280px, calc(100% - 48px));
  height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 2;
}
.brand { color: inherit; text-decoration: none; display: inline-flex; align-items: center; gap: 13px; }
.brand > span:last-child { display: grid; gap: 1px; }
.brand strong { font-size: 17px; letter-spacing: -.02em; }
.brand small { color: var(--muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; position: relative; transform: rotate(30deg); }
.brand-mark i { position: absolute; display: block; border: 1.5px solid var(--accent); border-radius: 4px; }
.brand-mark i:nth-child(1) { width: 25px; height: 25px; opacity: .45; }
.brand-mark i:nth-child(2) { width: 17px; height: 17px; opacity: .72; }
.brand-mark i:nth-child(3) { width: 8px; height: 8px; background: var(--accent); box-shadow: 0 0 14px rgba(91,103,241,.38); }
.service-strip { display: flex; align-items: center; gap: 9px; }
.status-chip { min-height: 34px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; display: flex; align-items: center; gap: 7px; background: var(--surface); box-shadow: 0 1px 2px rgba(31,35,40,.05); }
.status-chip i { width: 7px; height: 7px; border-radius: 50%; background: var(--warning); box-shadow: 0 0 12px currentColor; }
.status-chip b { color: var(--muted); font-size: 11px; font-weight: 500; }
.status-chip em { font-size: 11px; font-style: normal; }
.status-chip.ok i { background: var(--success); }
.status-chip.bad i { background: var(--danger); }
.status-chip.bad em { color: var(--danger); }
.icon-button { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 9px; display: grid; place-items: center; background: var(--surface); cursor: pointer; transition: .18s ease; }
.icon-button:hover { border-color: var(--line-strong); background: var(--surface-strong); transform: translateY(-1px); }
.icon-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

main { width: min(1180px, calc(100% - 48px)); margin: 0 auto; position: relative; z-index: 1; }
.hero { min-height: calc(100vh - 150px); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr); gap: clamp(48px, 8vw, 116px); align-items: center; padding: 64px 0 82px; }
.hero-copy { max-width: 680px; }
.eyebrow { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 24px; height: 1px; background: var(--accent); }
.hero h1, .console-heading h1 { margin: 20px 0; letter-spacing: -.06em; line-height: .99; font-size: clamp(50px, 6.4vw, 86px); font-weight: 620; }
.hero h1 em { font-style: normal; color: transparent; background: linear-gradient(95deg, var(--accent), var(--purple)); background-clip: text; -webkit-background-clip: text; }
.hero-copy > p { max-width: 620px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.protocol-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 42px; border: 1px solid var(--line); border-radius: 13px; overflow: hidden; background: var(--surface); box-shadow: 0 1px 5px rgba(31,35,40,.03); }
.protocol-grid article { padding: 19px 22px; display: grid; gap: 5px; border-right: 1px solid var(--line); }
.protocol-grid article:last-child { border-right: 0; }
.protocol-grid strong { font-size: 18px; font-weight: 600; }
.protocol-grid span { color: var(--muted); font-size: 11px; }
.login-card { padding: 31px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow); position: relative; overflow: hidden; }
.credential-card { width: min(100%, 560px); margin: 32px auto 0; }
.card-glow { position: absolute; width: 210px; height: 210px; right: -100px; top: -120px; border-radius: 50%; background: var(--accent); filter: blur(60px); opacity: .08; }
.card-heading { display: flex; gap: 14px; align-items: center; margin-bottom: 28px; position: relative; }
.card-heading p, .surface-heading p { margin: 0 0 3px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.card-heading h2, .surface-heading h2 { margin: 0; font-size: 21px; letter-spacing: -.025em; }
.lock-mark { width: 43px; height: 43px; border-radius: 13px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); border: 1px solid #e2e5ff; }
.lock-mark svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; }
form { position: relative; }
.login-card form { display: grid; gap: 17px; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: .04em; }
input { width: 100%; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 9px; padding: 12px 13px; transition: border-color .18s, background .18s, box-shadow .18s; }
input::placeholder { color: var(--tertiary); }
input:hover { border-color: var(--line-strong); }
input:focus { border-color: var(--accent); background: var(--surface); box-shadow: 0 0 0 3px var(--accent-soft); }
.primary-button { width: 100%; margin-top: 5px; padding: 13px 16px; border: 0; border-radius: 9px; display: flex; justify-content: center; align-items: center; gap: 8px; color: #fff; background: var(--accent); font-weight: 750; cursor: pointer; box-shadow: 0 4px 12px rgba(91,103,241,.24); transition: .18s ease; }
.primary-button:hover { transform: translateY(-1px); background: var(--accent-hover); box-shadow: 0 7px 18px rgba(91,103,241,.28); }
.primary-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.privacy-note { margin: 18px 0 0; color: var(--tertiary); font-size: 10px; line-height: 1.5; display: flex; gap: 8px; }
.privacy-note span { color: var(--success); font-size: 7px; margin-top: 3px; }

.console-view { padding: 64px 0 90px; min-height: calc(100vh - 150px); }
.console-heading { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 38px; }
.console-heading h1 { font-size: clamp(42px, 5vw, 64px); margin: 13px 0 7px; }
.console-heading p { margin: 0; color: var(--muted); }
.secondary-button { padding: 10px 15px; border-radius: 10px; border: 1px solid var(--line-strong); background: transparent; cursor: pointer; }
.secondary-button:hover { border-color: var(--accent); background: var(--bg-secondary); color: var(--accent); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: var(--surface); border-radius: 13px; overflow: hidden; margin-bottom: 22px; box-shadow: 0 1px 5px rgba(31,35,40,.03); }
.metric-grid article { min-height: 134px; padding: 23px; display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.metric-grid article:last-child { border-right: 0; }
.metric-grid span { color: var(--muted); font-size: 11px; }
.metric-grid strong { margin: 12px 0 8px; font-size: 27px; font-weight: 620; letter-spacing: -.04em; }
.metric-grid small { color: var(--tertiary); font-size: 10px; }
.content-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 22px; }
.surface { border: 1px solid var(--line); border-radius: 13px; background: var(--surface); padding: 25px; box-shadow: 0 1px 5px rgba(31,35,40,.03); }
.surface-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.secure-badge { color: var(--accent); background: var(--accent-soft); border: 1px solid #e2e5ff; padding: 6px 9px; border-radius: 999px; font-size: 9px; letter-spacing: .08em; }
.surface-intro { margin: -9px 0 19px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.create-form { margin-bottom: 20px; padding: 16px; border-radius: 13px; background: var(--bg-secondary); border: 1px solid var(--line); }
.create-form > div { display: flex; gap: 8px; margin-top: 8px; }
.create-form input { padding: 10px 12px; }
.create-form button { border: 0; border-radius: 9px; padding: 0 17px; color: #fff; background: var(--accent); font-weight: 700; cursor: pointer; }
.create-form button:hover { background: var(--accent-hover); }
.vault-list, .device-list { display: grid; gap: 9px; }
.vault-item, .device-item { min-width: 0; border: 1px solid var(--line); background: var(--surface-strong); border-radius: 9px; padding: 15px 16px; display: flex; align-items: center; gap: 13px; }
.vault-symbol, .device-symbol { width: 38px; height: 38px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 9px; background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.device-symbol { color: #7443ad; background: #f3eefe; }
.item-copy { min-width: 0; flex: 1; }
.item-copy strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.item-copy small { color: var(--muted); font-size: 10px; }
progress { display: block; width: 100%; height: 4px; margin-top: 9px; border: 0; border-radius: 99px; overflow: hidden; accent-color: var(--accent); }
progress::-webkit-progress-bar { background: var(--bg-tertiary); }
progress::-webkit-progress-value { background: linear-gradient(90deg, var(--accent), var(--purple)); }
.item-side { text-align: right; flex: 0 0 auto; }
.item-side strong { display: block; font-size: 12px; }
.item-side small { color: var(--muted); font-size: 9px; }
.danger-button { border: 1px solid #ffc1bd; color: var(--danger); background: var(--danger-soft); border-radius: 8px; padding: 7px 9px; cursor: pointer; font-size: 10px; }
.danger-button:hover { background: #ffd8d5; }
.revoked { opacity: .48; }
.empty-state { min-height: 100px; display: grid; place-items: center; color: var(--muted); border: 1px dashed var(--line); border-radius: 12px; font-size: 12px; }
footer { width: min(1280px, calc(100% - 48px)); min-height: 62px; margin: 0 auto; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; color: var(--tertiary); font-size: 9px; letter-spacing: .04em; position: relative; z-index: 1; }
.toast { position: fixed; z-index: 10; right: 24px; bottom: 24px; max-width: min(420px, calc(100% - 48px)); padding: 13px 16px; border: 1px solid var(--line-strong); border-radius: 9px; background: var(--surface); box-shadow: var(--shadow); font-size: 12px; }
.toast.error { color: var(--danger); border-color: #ffc1bd; background: var(--danger-soft); }

@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; padding-top: 76px; }
  .hero-copy { max-width: none; }
  .login-card { max-width: 560px; width: 100%; }
  .content-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid article:nth-child(2) { border-right: 0; }
  .metric-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 620px) {
  .topbar, main, footer { width: min(100% - 28px, 1180px); }
  .topbar { height: 74px; }
  .brand small, .status-chip b, footer span:last-child { display: none; }
  .status-chip { padding: 0 9px; }
  .hero { padding: 52px 0 64px; gap: 45px; }
  .hero h1 { font-size: 43px; }
  .hero-copy > p { font-size: 14px; }
  .protocol-grid article { padding: 15px 11px; }
  .protocol-grid strong { font-size: 14px; }
  .login-card, .surface { padding: 21px; }
  .console-heading { align-items: flex-start; gap: 18px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-grid article { min-height: 116px; border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-grid article:last-child { border-bottom: 0; }
  .create-form > div { flex-direction: column; }
  .create-form button { padding: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}