:root {
  --bg: #080b10;
  --bg-soft: #0d1118;
  --panel: #11161f;
  --panel-2: #151c27;
  --line: #232c3a;
  --line-soft: #1a222e;
  --text: #f1f5f9;
  --muted: #93a1b5;
  --faint: #64748b;
  --green: #54d39a;
  --green-dark: #123b2b;
  --amber: #f3b34c;
  --blue: #76a9ff;
  --danger: #ff8b84;
  --radius: 16px;
  --max: 1180px;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 78% -10%, rgba(84, 211, 154, .10), transparent 62%),
    radial-gradient(700px 420px at 8% 8%, rgba(118, 169, 255, .07), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 15px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }
::selection { background: rgba(84, 211, 154, .3); }
.container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.faint { color: var(--faint); }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(8, 11, 16, .78);
  border-bottom: 1px solid var(--line-soft);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; object-fit: contain; }
.brand span { font-size: 16px; }
.brand small {
  font: 600 10px/1 var(--mono); color: var(--green); letter-spacing: .12em;
  border: 1px solid rgba(84, 211, 154, .28); background: rgba(84, 211, 154, .08);
  border-radius: 999px; padding: 5px 7px; margin-left: 2px;
}
.nav-links { display: flex; align-items: center; gap: 26px; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px;
  background: var(--panel); color: var(--text); font-weight: 600; font-size: 14px;
  transition: border-color .16s, background .16s, transform .16s;
}
.btn:hover { border-color: #384555; background: #18202b; }
.btn.primary { background: var(--green); border-color: var(--green); color: #07110c; }
.btn.primary:hover { background: #6fe2ad; border-color: #6fe2ad; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 7px 12px; font-size: 13px; border-radius: 8px; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn.block { width: 100%; }
.link-arrow { color: var(--green); font-weight: 600; font-size: 14px; }

/* hero */
.hero { padding: 92px 0 54px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 58px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; color: var(--green);
  font: 600 11px/1.2 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--green); opacity: .7; }
h1 { font-size: clamp(38px, 5.1vw, 66px); line-height: 1.08; letter-spacing: -.045em; margin: 0 0 22px; font-weight: 760; }
h1 em { color: var(--green); font-style: normal; }
.lead { font-size: 17px; color: var(--muted); max-width: 620px; margin: 0 0 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--faint); font-size: 13px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }

.terminal {
  background: linear-gradient(160deg, #141b25, #0d1219);
  border: 1px solid #2a3545; border-radius: 18px; overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .04);
}
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 12px 15px; border-bottom: 1px solid #202a38; }
.terminal-bar i { width: 9px; height: 9px; border-radius: 50%; background: #344050; }
.terminal-bar i:first-child { background: #e5776f; }
.terminal-bar i:nth-child(2) { background: #e8b45d; }
.terminal-bar i:nth-child(3) { background: #65c48b; }
.terminal-title { margin-left: auto; color: #6c7d92; font: 11px var(--mono); }
.terminal-body { padding: 24px 22px 26px; font: 12.5px/1.9 var(--mono); color: #aab8c9; }
.terminal-body .cmd { color: #dce7f4; }
.terminal-body .prompt { color: var(--green); }
.terminal-body .ok { color: #65d9a2; }
.terminal-body .dim { color: #64748b; }
.terminal-list { margin-top: 14px; padding-top: 14px; border-top: 1px dashed #25303f; display: grid; gap: 6px; }
.terminal-list div { display: flex; justify-content: space-between; gap: 14px; }
.terminal-list b { color: #dbe6f2; font-weight: 500; }
.terminal-list span { color: #6f8fa9; }

/* generic sections */
section { padding: 64px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
.section-head h2 { margin: 0 0 8px; font-size: clamp(26px, 3vw, 36px); letter-spacing: -.03em; }
.section-head p { margin: 0; color: var(--muted); max-width: 620px; }
.kicker { color: var(--green); font: 600 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 10px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card {
  background: linear-gradient(180deg, rgba(21, 28, 39, .9), rgba(15, 20, 28, .9));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
.card h3 { margin: 0 0 8px; font-size: 17px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.step { position: relative; overflow: hidden; }
.step .num { color: var(--green); font: 600 11px var(--mono); letter-spacing: .12em; margin-bottom: 20px; }
.step::after { content: ""; position: absolute; width: 140px; height: 140px; right: -66px; top: -66px; border-radius: 50%; background: rgba(84, 211, 154, .05); }

/* catalog */
.catalog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.skill-card { display: flex; flex-direction: column; min-height: 208px; }
.skill-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.skill-icon {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: rgba(84, 211, 154, .09); border: 1px solid rgba(84, 211, 154, .20); color: var(--green);
  font: 700 13px var(--mono);
}
.tag { font: 500 11px var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 4px 9px; white-space: nowrap; }
.skill-card h3 { margin: 0 0 7px; font-size: 17px; }
.skill-card p { margin: 0 0 18px; color: var(--muted); font-size: 13.5px; }
.skill-foot { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line-soft); display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 12px; color: var(--faint); }
.official { display: inline-flex; align-items: center; gap: 6px; color: var(--green); font-weight: 600; }
.official::before { content: "✓"; font-size: 11px; border: 1px solid rgba(84, 211, 154, .4); border-radius: 50%; width: 15px; height: 15px; display: grid; place-items: center; }
.loading { color: var(--faint); padding: 28px 0; font: 12px var(--mono); }
.empty { color: var(--muted); padding: 24px; border: 1px dashed var(--line); border-radius: 12px; }

/* trust */
.trust-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.trust-list { display: grid; gap: 14px; }
.trust-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
.trust-item:last-child { border-bottom: 0; }
.trust-item .mark { flex: 0 0 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--green-dark); color: var(--green); font-size: 12px; }
.trust-item h3 { margin: 0 0 3px; font-size: 14px; }
.trust-item p { margin: 0; color: var(--muted); font-size: 13px; }
.notice { border-left: 2px solid var(--amber); background: rgba(243, 179, 76, .06); padding: 16px 18px; border-radius: 0 10px 10px 0; color: #d9c6a2; font-size: 13px; }

/* service */
.service-band {
  border: 1px solid var(--line); border-radius: 20px; padding: 34px;
  background:
    radial-gradient(500px 180px at 100% 0, rgba(84, 211, 154, .10), transparent 70%),
    linear-gradient(120deg, #111720, #0d1219);
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
}
.service-band h2 { margin: 0 0 8px; font-size: 24px; letter-spacing: -.02em; }
.service-band p { margin: 0; color: var(--muted); max-width: 620px; font-size: 14px; }
.service-actions { display: flex; gap: 10px; flex-wrap: wrap; }

footer { border-top: 1px solid var(--line-soft); padding: 34px 0 44px; color: var(--faint); font-size: 12.5px; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a:hover { color: var(--text); }

/* portal */
.app-body { min-height: 100vh; }
.app-header { border-bottom: 1px solid var(--line-soft); background: rgba(8, 11, 16, .85); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 20; }
.app-header .nav { height: 64px; }
.user-chip { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; }
.avatar { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--green-dark); color: var(--green); font-weight: 700; font-size: 12px; }
.app-main { padding: 46px 0 70px; }
.app-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 26px; flex-wrap: wrap; }
.app-title h1 { font-size: 30px; margin: 0 0 6px; }
.app-title p { margin: 0; color: var(--muted); font-size: 14px; }
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  border-radius: 999px; padding: 7px 13px; font-size: 12.5px;
}
.filter:hover { color: var(--text); border-color: #384555; }
.filter.active { background: var(--green); border-color: var(--green); color: #07110c; font-weight: 650; }
.portal-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.portal-card { display: flex; flex-direction: column; gap: 15px; }
.portal-card .skill-top { margin-bottom: 0; }
.portal-card .skill-head { display: flex; gap: 13px; align-items: center; }
.portal-card h3 { margin: 0 0 3px; font-size: 16px; }
.portal-card .summary { margin: 0; color: var(--muted); font-size: 13px; min-height: 42px; }
.portal-card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.portal-card .tag { padding: 2px 8px; font-size: 10.5px; }
.portal-card .skill-foot { padding-top: 13px; }
.toggle-wrap { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 12px; }
.switch { position: relative; display: inline-flex; width: 40px; height: 23px; flex: 0 0 auto; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: #26303e; border: 1px solid #344050; border-radius: 999px; transition: .18s; }
.switch span::after { content: ""; position: absolute; width: 17px; height: 17px; left: 2px; top: 2px; border-radius: 50%; background: #91a0b3; transition: .18s; }
.switch input:checked + span { background: var(--green); border-color: var(--green); }
.switch input:checked + span::after { transform: translateX(17px); background: #07110c; }
.switch input:disabled + span { opacity: .5; }
.login-panel { max-width: 620px; margin: 42px auto; text-align: center; padding: 46px 30px; }
.login-panel h1 { font-size: 32px; margin-bottom: 12px; }
.login-panel p { color: var(--muted); margin: 0 auto 24px; max-width: 480px; }
.mini-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-top: 28px; text-align: left; }
.mini-step { background: var(--panel); padding: 15px; }
.mini-step b { display: block; color: var(--green); font: 600 10px var(--mono); margin-bottom: 6px; }
.mini-step span { color: var(--muted); font-size: 12px; }
.toast {
  position: fixed; right: 22px; bottom: 22px; z-index: 60; max-width: 360px;
  background: #16202c; border: 1px solid #2c3a4b; border-radius: 11px; padding: 13px 16px;
  box-shadow: 0 18px 40px rgba(0,0,0,.45); font-size: 13px; color: var(--text); display: none;
}
.toast.show { display: block; }
.toast.err { border-color: #5a3030; color: #ffb4ae; }

@media (max-width: 900px) {
  .hero-grid, .trust-wrap { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding-top: 58px; }
  .grid-3, .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .portal-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .service-band { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 620px) {
  .container { width: calc(100% - 32px); }
  .brand small { display: none; }
  .grid-3, .grid-2, .catalog-grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  h1 { font-size: 38px; }
  .hero-actions .btn { flex: 1; }
  .service-band { padding: 24px; }
  .mini-steps { grid-template-columns: 1fr; }
  .app-title h1 { font-size: 26px; }
  .user-chip .name { display: none; }
}