:root {
  --bg: #f4f6f8;
  --bg-2: #eef2f6;
  --ink: #12181f;
  --ink-soft: #5b6775;
  --line: #e2e8ef;
  --card: #ffffff;
  --accent: #0f8f7b;
  --accent-deep: #0b6d5e;
  --accent-soft: #e6f6f2;
  --ok: #1f7a4d;
  --warn: #9a6b12;
  --bad: #c2413a;
  --shadow: 0 12px 40px rgba(18, 24, 31, 0.06);
  --radius: 18px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  min-height: 100%;
  background:
    radial-gradient(900px 420px at 90% -10%, rgba(15, 143, 123, 0.08), transparent 50%),
    var(--bg);
  color: var(--ink);
  font-family: Outfit, "Noto Sans SC", sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; }
.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.serif { font-family: Outfit, "Noto Sans SC", sans-serif; }
.mono { font-family: "IBM Plex Mono", monospace; }

#app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.header-bar {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
}
.brand-text { font-size: 18px; font-weight: 700; letter-spacing: -0.03em; }
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  font-size: 14px;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding: 8px 12px;
  border-radius: 8px;
}
.nav a:hover { color: var(--ink); background: var(--bg-2); }
.nav a.on { color: var(--accent-deep); background: var(--accent-soft); font-weight: 600; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  flex-shrink: 0;
}
.header-actions > a { text-decoration: none; color: var(--ink-soft); font-size: 14px; }
.header-actions > a:hover { color: var(--ink); }
.user-chip {
  font-size: 13px;
  color: var(--ink-soft);
  background: var(--bg-2);
  border-radius: 999px;
  padding: 6px 10px;
}
.nav-quiet { color: var(--ink-soft); }
.site-main { flex: 1 0 auto; padding-bottom: 96px; }
.site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  background: #fff;
  border-top: 1px solid var(--line);
}
.footer-bar {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink-soft);
  font-size: 13px;
}
.btn {
  appearance: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.seal, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:hover { transform: translateY(-1px); }

.hero { padding: 56px 0 36px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero-modern { padding-top: 72px; }
.kicker { letter-spacing: 0.16em; font-size: 12px; color: var(--accent-deep); font-weight: 600; text-transform: uppercase; }
.hero h1 { font-size: clamp(40px, 6vw, 64px); line-height: 1.08; margin: 12px 0 18px; letter-spacing: -0.04em; text-wrap: pretty; }
.hero p.lead { font-size: 18px; color: var(--ink-soft); max-width: 32em; }
.cta { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.trust-row { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; color: var(--ink-soft); font-size: 12px; }
.trust-row span::before { content: "✓"; color: var(--accent); font-weight: 700; margin-right: 5px; }
.ticket {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 24px;
  border-radius: var(--radius);
}
.ticket h3 { margin: 0 0 14px; font-size: 16px; }
.hero-panel { padding: 28px; }
.panel-label { color: var(--accent-deep); text-transform: uppercase; letter-spacing: .12em; font-size: 11px; font-weight: 700; margin-bottom: 8px; }
.panel-stats { display: flex; gap: 28px; padding-top: 14px; }
.panel-stats div { display: flex; flex-direction: column; }
.panel-stats b { font-size: 20px; }
.panel-stats span { color: var(--ink-soft); font-size: 12px; }
.row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.row:last-child { border-bottom: 0; }

.grid-4, .grid-3, .grid-2 { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-4 > div {
  border: 1px solid var(--line);
  background: var(--card);
  padding: 16px 18px;
  border-radius: var(--radius);
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card, .panel {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: var(--radius);
}
.panel h2, .card h3 { margin: 0 0 8px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.section-heading h2 { margin-bottom: 4px; }
.text-link, .step-card a { color: var(--accent-deep); font-size: 13px; text-decoration: none; font-weight: 600; }
.step-card { position: relative; padding-top: 24px; }
.step-no { display: block; color: var(--accent); font: 600 12px "IBM Plex Mono", monospace; margin-bottom: 14px; }
.step-card p { min-height: 48px; }
.muted { color: var(--ink-soft); }
.tiny { font-size: 12px; color: var(--ink-soft); }
.section { padding: 28px 0 64px; }
.section h2 { font-size: 32px; margin: 0 0 8px; letter-spacing: -0.03em; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--ink-soft); font-weight: 500; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--bg-2); font-size: 12px; }
.tag.ok { color: var(--ok); background: #e8f6ee; }
.tag.bad { color: var(--bad); background: #fdecea; }
.tag.warn { color: var(--warn); background: #fff6e8; }
.table-wrap { overflow: auto; }
tr.order-pending td { background: #fffaf3; }
tr.order-paid td { background: #f4fbf6; }
tr.order-rejected td { background: #fdf6f5; }

.layout { display: grid; grid-template-columns: 220px 1fr; gap: 22px; padding: 28px 0 60px; }
.side a {
  display: block;
  padding: 10px 0;
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}
.side a.on { color: var(--ink); font-weight: 600; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 12px; color: var(--ink-soft); }
input, select, textarea {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 12px;
  width: 100%;
  border-radius: 12px;
}
textarea { min-height: 120px; resize: vertical; }
.flash { padding: 10px 12px; border-radius: 12px; background: var(--accent-soft); margin-bottom: 14px; }
.flash.err { background: #fdecea; color: var(--bad); }
pre, code { font-family: "IBM Plex Mono", monospace; }
pre {
  background: #12181f;
  color: #e8eef4;
  padding: 16px;
  overflow: auto;
  font-size: 13px;
  line-height: 1.6;
  border-radius: 14px;
}
.stat { font-size: 34px; line-height: 1; letter-spacing: -0.04em; }
.chat { display: flex; flex-direction: column; gap: 10px; min-height: 280px; }
.bubble { padding: 12px 14px; border: 1px solid var(--line); background: #fff; border-radius: 14px; white-space: pre-wrap; }
.bubble.me { border-color: transparent; background: var(--accent-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
}
.chip.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-deep); }
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}
.page-head .muted { margin: 0; flex: 1; }
.group-pick {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.group-pick .pick {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 12px 14px;
  cursor: pointer;
}
.group-pick .pick b { display: block; margin-bottom: 4px; }
.group-pick .pick span { display: block; font-size: 12px; color: var(--ink-soft); }
.group-pick .pick em { font-style: normal; font-size: 12px; color: var(--warn); margin-left: 6px; }
.group-pick .pick.on { border-color: var(--accent); background: var(--accent-soft); }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.key-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.key-mask { user-select: none; letter-spacing: 0.02em; white-space: nowrap; }
.empty-card {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 28px 20px;
  color: var(--ink-soft);
  text-align: center;
}
a.chip { text-decoration: none; display: inline-flex; align-items: center; }
.chart-card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px 12px 6px;
  margin: 8px 0 22px;
}
.chart-card svg {
  width: 100%;
  height: auto;
  display: block;
  font-size: 11px;
  fill: var(--ink-soft);
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.chart-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 99px;
  margin-right: 6px;
  vertical-align: -1px;
}
.stat .tiny { font-size: 13px; letter-spacing: 0; }
.chat-box {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 62vh;
  gap: 12px;
}
.chat-toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.chat-toolbar .field { margin: 0; flex: 1; min-width: 160px; }
.chat-log {
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 2px 8px;
  max-height: 52vh;
}
.chat-composer { display: flex; gap: 8px; align-items: flex-end; }
.chat-composer textarea { min-height: 72px; margin: 0; }
.bubble.sys { background: var(--bg-2); color: var(--ink-soft); }

.model-toolbar { display: flex; gap: 12px; margin: 22px 0 18px; flex-wrap: wrap; }
.model-toolbar input { max-width: 320px; }
.model-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.model-card {
  text-align: left;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  min-height: 188px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.model-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #c9d4de; }
.model-card .name { font-size: 18px; font-weight: 650; letter-spacing: -0.03em; }
.model-card .desc { color: var(--ink-soft); font-size: 13px; min-height: 36px; }
.model-card .tiny.risk { color: var(--warn); }
.model-action { display: block; color: var(--accent-deep); font-size: 12px; font-weight: 600; margin-top: 12px; }
.note-box { background: var(--bg); border-radius: 14px; padding: 12px 14px; margin: 10px 0; font-size: 13px; color: var(--ink-soft); }
.note-box b { display: block; color: var(--ink); margin-bottom: 4px; }
.note-box.warn { background: #fff6e8; }
.community-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 20px; margin-top: 18px; }
.post-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 12px 0; }
.post-card h3 { margin: 8px 0; }
.post-card p { margin: 0; color: var(--ink-soft); white-space: pre-wrap; }
.post-top, .post-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.post-actions { margin-top: 10px; }
.rank-list { margin: 12px 0 0; padding-left: 18px; }
.rank-list li { margin: 10px 0; }
a.card { text-decoration: none; color: inherit; display: block; }
.price-row { display: flex; gap: 8px; margin-top: auto; flex-wrap: wrap; }
.price-chip { background: var(--bg-2); border-radius: 999px; padding: 4px 10px; font-size: 12px; }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 24, 31, 0.38);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 20;
}
.overlay.pay-overlay { z-index: 50; }
.modal {
  width: min(640px, 100%);
  background: #fff;
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(18, 24, 31, 0.18);
  max-height: calc(100vh - 48px);
  overflow: auto;
}
.modal.pay-modal { width: min(420px, 100%); text-align: center; }
.modal h2 { margin: 8px 0 6px; letter-spacing: -0.03em; }
.modal-top { display: flex; justify-content: space-between; align-items: center; }
.pay-due {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 8px 0 4px;
}
.pay-due span { font-size: 18px; margin-right: 2px; }
.pay-amount-warn { text-align: left; margin: 8px 0 14px; }
.custom-amount { margin-top: 4px; }
#custom-amount-wrap[hidden] { display: none !important; }
.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0; }
.kv div { background: var(--bg); border-radius: 14px; padding: 12px 14px; }
.kv b { display: block; font-size: 18px; margin-top: 4px; }

.seg {
  display: flex;
  gap: 4px;
  background: var(--bg-2);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 16px;
}
.seg button {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
}
.seg button.on {
  background: #fff;
  color: var(--ink);
  font-weight: 600;
  box-shadow: var(--shadow);
}
.code-row { display: flex; gap: 8px; align-items: stretch; }
.code-row input { flex: 1; }
.code-row .btn { flex-shrink: 0; white-space: nowrap; border-radius: 12px; }
.amount-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.btn.alipay {
  background: #1677ff;
  border-color: #1677ff;
  color: #fff;
  width: 100%;
  justify-content: center;
  border-radius: 12px;
  padding: 12px 16px;
  margin: 4px 0 16px;
}
.btn.alipay:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.pay-qr { text-align: center; margin: 4px 0 18px; }
.pay-qr img {
  width: min(240px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
}
.pay-memo { text-align: left; margin: 0 0 14px; }
.pay-code-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--bg);
  border-radius: 12px;
  padding: 10px 12px;
  margin: 6px 0 8px;
}
.pay-code { font-size: 28px; letter-spacing: 0.12em; font-family: "IBM Plex Mono", monospace; }
.ticket-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 12px 0;
}
.ticket-top { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
.ticket-card h3 { margin: 0 0 8px; font-size: 16px; }
.ticket-body { margin: 0 0 10px; color: var(--ink-soft); white-space: pre-wrap; }
.ticket-reply {
  background: #e8f6ee;
  border-radius: 12px;
  padding: 12px 14px;
  white-space: pre-wrap;
  margin-bottom: 12px;
}
.ticket-reply b { display: block; margin-bottom: 4px; }
.ticket-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.ticket-form textarea { min-height: 80px; }
.docs-steps { margin: 18px 0 24px; padding-left: 22px; }
.docs-steps li { margin: 0 0 22px; }
.docs-steps b { display: block; margin-bottom: 6px; }
.docs-steps p { margin: 6px 0; color: var(--ink-soft); }
.copy-row {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 8px;
  align-items: center;
  background: var(--bg);
  border-radius: 12px;
  padding: 8px 10px;
  margin: 8px 0 12px;
  font-size: 13px;
}
.copy-row code { overflow: auto; }
.docs-dl, .docs-picks { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 12px 0 20px; }
.docs-dl a.card, .docs-picks a.card { text-decoration: none; color: inherit; }

@media (max-width: 860px) {
  .hero, .grid-4, .grid-3, .grid-2, .layout, .kv, .community-grid { grid-template-columns: 1fr; display: grid; }
  .header-bar { flex-wrap: wrap; gap: 10px 16px; padding: 10px 0; }
  .nav { flex-wrap: wrap; width: 100%; order: 3; }
  .header-actions { margin-left: 0; }
  .hero { padding-top: 28px; }
  .site-main { padding-bottom: 80px; }
  .copy-row { grid-template-columns: 1fr; }
  .group-pick { grid-template-columns: 1fr; }
  .page-head { flex-direction: column; }
}