/* 易卡授权站 · 样式 v3「企业官网」
   深蓝科技风：渐变 hero、能力条、特性网格、流程、授权方案、FAQ、CTA、多列页脚。
   portal / admin 等业务页沿用既有 class（card / btn / table / tag / kv …），自动获得新视觉。 */

:root {
  --brand-50: #eef3ff;
  --brand-100: #dfe8ff;
  --brand-200: #c2d4ff;
  --brand-500: #3b74ff;
  --brand-600: #1657ff;
  --brand-700: #0e45d8;

  --ink: #0d1526;
  --ink-2: #46506a;
  --ink-3: #8791a6;
  --line: #e5e8f0;
  --line-strong: #d3d9e6;
  --canvas: #f4f6fa;
  --surface: #ffffff;

  --navy-950: #060d20;
  --navy-900: #0a1330;
  --navy-800: #101c40;
  --navy-700: #16264f;

  --ok: #0da06a;
  --ok-soft: #e3f6ee;
  --warn: #b25e09;
  --warn-soft: #fdf1de;
  --danger: #d33a3a;
  --danger-soft: #fdecec;

  --radius: 14px;
  --r-btn: 10px;
  --r-input: 10px;

  --shadow-sm: 0 1px 2px rgba(13, 21, 38, .05);
  --shadow-md: 0 8px 28px -10px rgba(13, 21, 38, .14);
  --shadow-lg: 0 28px 56px -24px rgba(13, 21, 38, .28);

  --sans: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
  --t: .18s ease;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--brand-200); color: var(--navy-900); }

a { color: var(--brand-600); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--brand-700); }

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: 24px; line-height: 1.3; }
h2 { font-size: 16px; line-height: 1.5; }
p { margin: 0 0 10px; }
ol, ul { margin: 0; }

.muted { color: var(--ink-2); }
.small { font-size: 12.5px; }
.tiny { font-size: 11.5px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.ta-r { text-align: right; }
.inline { display: inline; }

.label-caps {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ══════════ 顶栏 ══════════ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -.01em;
  flex: none;
}
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  position: relative;
  display: inline-block;
  flex: none;
  box-shadow: 0 4px 12px -4px rgba(22, 87, 255, .5);
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 2px;
  border: 1.5px solid #fff;
  border-right-color: transparent;
  border-bottom-color: transparent;
  transform: rotate(45deg);
}
.brand small {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: .04em;
  margin-left: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--ink-2);
  margin-right: auto;
}
.nav-links a {
  color: var(--ink-2);
  padding: 7px 12px;
  border-radius: 8px;
  transition: color var(--t), background var(--t);
}
.nav-links a:hover { color: var(--ink); background: #f1f4f9; }

.nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-actions > a.nav-login { color: var(--ink-2); font-size: 14px; padding: 7px 6px; }
.nav-actions > a.nav-login:hover { color: var(--ink); }
.nav-user {
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 12.5px;
  max-width: 9em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ══════════ 容器 ══════════ */
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 28px 72px;
}

/* ══════════ 按钮 ══════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 42px;
  padding: 0 18px;
  border-radius: var(--r-btn);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--t), border-color var(--t), color var(--t), box-shadow var(--t), transform var(--t);
}
.btn:hover { background: #fafbfd; border-color: #c3cad9; color: var(--ink); }
.btn:active { transform: translateY(.5px); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--brand-100); border-color: var(--brand-500); }
.btn-primary {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 16px -6px rgba(22, 87, 255, .45);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-600), #0b3bbd);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 22px -6px rgba(22, 87, 255, .55);
}
.btn-light { background: #fff; border-color: transparent; color: var(--navy-900); box-shadow: var(--shadow-md); }
.btn-light:hover { background: #fff; color: var(--brand-700); border-color: transparent; }
.btn-outline-light {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .28);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .45); color: #fff; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: #f1f4f9; color: var(--ink); }
.btn-sm { height: 34px; padding: 0 13px; font-size: 12.5px; border-radius: 9px; }
.btn-lg { height: 48px; padding: 0 24px; font-size: 15px; border-radius: 12px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ══════════ 表单 ══════════ */
.stack { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field > span { font-size: 12px; font-weight: 500; letter-spacing: .02em; color: var(--ink-2); }
input[type=text], input[type=password], input[type=email], input[type=number],
input:not([type]), select, textarea {
  height: 44px;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-input);
  background: #fff;
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}
textarea { height: auto; padding: 11px 13px; line-height: 1.6; }
input::placeholder, textarea::placeholder { color: #aab2c2; }
input:hover, select:hover, textarea:hover { border-color: #c3cad9; }
input:focus, select:focus, textarea:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-100);
}
.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  align-items: end;
}
.form-grid .btn { justify-self: start; }

/* ══════════ 内容面（业务页卡片） ══════════ */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.card > h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.card.note { background: #fbfcfe; }
.card.empty { text-align: center; padding: 56px 26px; }
.card.empty h2 { display: block; border: 0; padding: 0; margin-bottom: 8px; }

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
.page-head h1 { margin-bottom: 6px; }
.page-head .muted { margin: 0; font-size: 13px; }
.page-head-meta { text-align: right; font-size: 12.5px; color: var(--ink-3); }
.page-head-meta strong { display: block; color: var(--ink); font-family: var(--mono); font-size: 13px; }

/* 子导航（吸顶） */
.subtabs {
  display: flex;
  gap: 2px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 64px;
  background: var(--canvas);
  z-index: 10;
}
.subtab {
  padding: 11px 15px;
  font-size: 13.5px;
  color: var(--ink-2);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--t), border-color var(--t);
}
.subtab:hover { color: var(--ink); }
.subtab.is-active { color: var(--brand-600); border-bottom-color: var(--brand-600); font-weight: 500; }

/* 统计 */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
}
.stat { background: var(--surface); padding: 18px 20px; }
.stat span {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 8px;
}
.stat strong {
  font-size: 28px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  line-height: 1;
}

/* 表格 */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 12px 11px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.table td {
  padding: 13px 12px;
  border-bottom: 1px solid #f1f3f5;
  vertical-align: middle;
}
.table td:first-child, .table th:first-child { padding-left: 2px; }
.table td:last-child, .table th:last-child { padding-right: 2px; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background var(--t); }
.table tbody tr:hover { background: #fafbfd; }
.table .mono { font-size: 12.5px; }

/* 状态胶囊 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 20px;
  white-space: nowrap;
  background: #f1f3f5;
  color: var(--ink-2);
}
.tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: .75;
}
.tag-ok { background: var(--ok-soft); color: #0a7a52; }
.tag-wait { background: var(--warn-soft); color: var(--warn); }
.tag-dead { background: #f1f3f5; color: var(--ink-3); }
.tag-plain { background: #eef1f6; color: var(--ink-2); }

/* 提示条 */
.flash {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 13.5px;
  border: 1px solid transparent;
}
.flash::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}
.flash-success { background: var(--ok-soft); color: #0a7a52; border-color: #c6e9d9; }
.flash-error { background: var(--danger-soft); color: var(--danger); border-color: #f5d2d2; }

/* 定位表 */
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 0; margin: 0; font-size: 13.5px; }
.kv dt, .kv dd { margin: 0; padding: 12px 0; border-bottom: 1px solid #f1f3f5; }
.kv dt {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 14px;
}
.kv dd:last-of-type, .kv dt:last-of-type { border-bottom: 0; }

/* 代码区 / 公钥 */
.code-area {
  width: 100%;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  background: #fbfcfe;
  border: 1px solid var(--line);
  border-radius: 10px;
  resize: vertical;
  word-break: break-all;
  color: var(--ink-2);
}
.pubkey {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding: 12px 14px;
  background: #fbfcfe;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
}
.pubkey code {
  flex: 1;
  min-width: 220px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-2);
  word-break: break-all;
}
.row-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

/* 编号列表 */
.steps { list-style: none; padding: 0; counter-reset: step; display: grid; gap: 0; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 0 14px 42px;
  border-bottom: 1px solid #f1f3f5;
  font-size: 13.5px;
  color: var(--ink-2);
}
.steps li:last-child { border-bottom: 0; }
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: .04em;
}
.steps li strong { color: var(--ink); font-weight: 600; }

/* ═══════════════════════════════════════
   企业官网 · 落地页
   ═══════════════════════════════════════ */

/* ── Hero ── */
.hero {
  position: relative;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(59, 116, 255, .38), transparent 60%),
    radial-gradient(640px 420px at -8% 110%, rgba(22, 87, 255, .22), transparent 55%),
    linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 52%, var(--navy-700) 100%);
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px) 0 0 / 100% 44px,
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px) 0 0 / 44px 100%;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 100%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -180px;
  width: 760px;
  height: 360px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(59, 116, 255, .28), transparent);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 92px 28px 104px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 64px;
  align-items: center;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .2);
  background: rgba(255, 255, 255, .07);
  color: rgba(255, 255, 255, .85);
}
.chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #4ade98;
  box-shadow: 0 0 0 3px rgba(74, 222, 152, .22);
}
.hero h1 {
  margin: 24px 0 20px;
  font-size: 46px;
  line-height: 1.16;
  letter-spacing: -.03em;
  font-weight: 700;
  max-width: 12em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #7ea6ff, #b7ccff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .72);
  max-width: 30em;
}
.hero-actions { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }
.hero-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .5);
}
.hero-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.hero-meta div { display: flex; align-items: center; gap: 9px; font-size: 13px; color: rgba(255, 255, 255, .68); }
.hero-meta svg { flex: none; opacity: .85; }

/* Hero 右侧：许可证卡片 */
.hero-visual { position: relative; }
.lic-card {
  position: relative;
  background: rgba(255, 255, 255, .97);
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  color: var(--ink);
}
.lic-card::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-500), #7ea6ff 60%, #4ade98);
}
.lic-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--line);
}
.lic-logo {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700));
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.lic-head b { font-size: 14px; display: block; line-height: 1.3; }
.lic-head span { font-size: 11.5px; color: var(--ink-3); }
.lic-badge {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 500;
  color: #0a7a52;
  background: var(--ok-soft);
  border-radius: 999px;
  padding: 4px 11px;
}
.lic-badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--ok); }
.lic-body { padding: 8px 22px 14px; }
.lic-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed #eef0f5;
  font-size: 13px;
}
.lic-row:last-child { border-bottom: 0; }
.lic-row dt { color: var(--ink-3); font-size: 12px; flex: none; }
.lic-row dd { margin: 0; font-family: var(--mono); font-size: 12.5px; color: var(--ink); text-align: right; word-break: break-all; }
.lic-foot {
  padding: 13px 22px 16px;
  background: #f8fafd;
  border-top: 1px solid var(--line);
}
.lic-foot .label-caps { display: block; margin-bottom: 6px; }
.lic-foot code {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-2);
  word-break: break-all;
  line-height: 1.6;
  display: block;
}
.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 10px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink);
  animation: floaty 5.5s ease-in-out infinite;
}
.float-chip svg { flex: none; }
.float-chip.fc-a { top: -26px; right: -18px; }
.float-chip.fc-b { bottom: -24px; left: -22px; animation-delay: -2.6s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── 通用 section ── */
.section { padding: 88px 28px; }
.section.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-inner { max-width: 1180px; margin: 0 auto; }
.section-head { max-width: 640px; margin: 0 auto 52px; text-align: center; }
.section-head .chip {
  border-color: var(--brand-100);
  background: var(--brand-50);
  color: var(--brand-700);
}
.section-head .chip::before { background: var(--brand-500); box-shadow: 0 0 0 3px var(--brand-100); }
.section-head h2 { margin: 18px 0 12px; font-size: 34px; line-height: 1.25; letter-spacing: -.02em; }
.section-head p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* 特性网格 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 26px;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-200);
}
.feature-icon {
  width: 46px; height: 46px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--brand-50), var(--brand-100));
  border: 1px solid var(--brand-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-600);
  margin-bottom: 18px;
}
.feature h3 { font-size: 16px; margin-bottom: 8px; }
.feature p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }

/* 激活流程 */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.flow-grid::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-200), var(--brand-500), var(--brand-200));
  opacity: .5;
}
.flow-step {
  position: relative;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 22px;
  text-align: center;
}
.flow-no {
  width: 54px; height: 54px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  font-family: var(--mono);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 22px -8px rgba(22, 87, 255, .55);
  position: relative;
  z-index: 1;
}
.flow-step h3 { font-size: 15.5px; margin-bottom: 8px; }
.flow-step p { margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.7; }

/* 授权方案 */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}
.plan {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--t), box-shadow var(--t);
}
.plan:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.plan.is-hot {
  border: 2px solid var(--brand-500);
  box-shadow: 0 20px 44px -18px rgba(22, 87, 255, .38);
}
.plan-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 6px 14px -4px rgba(22, 87, 255, .5);
  white-space: nowrap;
}
.plan-name { font-size: 17px; }
.plan-for { margin: 6px 0 20px; font-size: 13px; color: var(--ink-3); }
.plan-price { display: flex; align-items: baseline; gap: 8px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.plan-price b { font-size: 40px; font-weight: 700; letter-spacing: -.03em; line-height: 1; }
.plan-price span { font-size: 13px; color: var(--ink-2); }
.plan-list { list-style: none; padding: 0; margin: 20px 0 26px; display: grid; gap: 11px; flex: 1; }
.plan-list li {
  position: relative;
  padding-left: 26px;
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.6;
}
.plan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--ok-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%230da06a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center / 10px no-repeat;
}
.plan-note {
  margin: 26px auto 0;
  max-width: 760px;
  text-align: center;
  font-size: 13px;
  color: var(--ink-3);
}

/* FAQ */
.faq { max-width: 780px; margin: 0 auto; display: grid; gap: 12px; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 22px;
  transition: border-color var(--t), box-shadow var(--t);
}
.faq details[open] { border-color: var(--brand-200); box-shadow: var(--shadow-sm); }
.faq summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  margin-left: auto;
  flex: none;
  width: 18px; height: 18px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238791a6' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center / 14px no-repeat;
  transition: transform var(--t);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > p { margin: 0; padding: 0 0 20px; font-size: 13.5px; color: var(--ink-2); line-height: 1.8; }

/* CTA */
.cta {
  position: relative;
  background:
    radial-gradient(600px 300px at 50% -20%, rgba(59, 116, 255, .35), transparent 65%),
    linear-gradient(150deg, var(--navy-900), var(--navy-700));
  color: #fff;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px) 0 0 / 100% 40px,
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px) 0 0 / 40px 100%;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 84px 28px;
  text-align: center;
}
.cta h2 { font-size: 34px; letter-spacing: -.02em; line-height: 1.3; }
.cta p { margin: 14px 0 34px; color: rgba(255, 255, 255, .68); font-size: 15px; }

/* ══════════ 页脚 ══════════ */
.site-foot {
  background: var(--navy-950);
  color: rgba(255, 255, 255, .62);
  font-size: 13px;
}
.foot-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 60px 28px 0;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
}
.foot-brand .brand { color: #fff; }
.foot-brand .brand:hover { color: #fff; }
.foot-brand p { margin: 16px 0 0; font-size: 12.5px; line-height: 1.8; max-width: 26em; }
.foot-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: .02em;
}
.foot-col ul { list-style: none; padding: 0; display: grid; gap: 11px; }
.foot-col a { color: rgba(255, 255, 255, .58); }
.foot-col a:hover { color: #fff; }
.foot-bar {
  max-width: 1180px;
  margin: 48px auto 0;
  padding: 20px 28px 26px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: rgba(255, 255, 255, .4);
}
.foot-bar a { color: rgba(255, 255, 255, .5); }
.foot-bar a:hover { color: rgba(255, 255, 255, .8); }

/* ══════════ 登录 / 注册 ══════════ */
.auth-body { background: var(--surface); }
.auth-split { display: grid; grid-template-columns: 1fr 1fr; min-height: 100vh; }
.auth-aside {
  position: relative;
  background:
    radial-gradient(700px 420px at 110% 0%, rgba(59, 116, 255, .32), transparent 60%),
    linear-gradient(155deg, var(--navy-900), var(--navy-700));
  color: #fff;
  padding: 52px 56px;
  display: flex;
  flex-direction: column;
  gap: 48px;
  overflow: hidden;
}
.auth-aside::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px) 0 0 / 100% 32px,
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px) 0 0 / 32px 100%;
  pointer-events: none;
}
.auth-aside > * { position: relative; z-index: 1; }
.auth-aside .brand { color: #fff; }
.auth-aside .brand:hover { color: #fff; }
.auth-aside .brand-mark { box-shadow: none; }
.auth-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.auth-top .back { font-size: 12.5px; color: rgba(255, 255, 255, .55); }
.auth-top .back:hover { color: #fff; }
.aside-headline { font-size: 32px; line-height: 1.32; font-weight: 600; letter-spacing: -.02em; max-width: 12em; }
.aside-headline em {
  font-style: normal;
  background: linear-gradient(100deg, #7ea6ff, #b7ccff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.aside-list { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 15px; }
.aside-list li { display: flex; gap: 12px; font-size: 13.5px; line-height: 1.65; color: rgba(255, 255, 255, .72); }
.aside-list li svg { flex: none; margin-top: 3px; opacity: .9; }
.auth-aside .foot-note { margin-top: auto; font-size: 11.5px; color: rgba(255, 255, 255, .38); letter-spacing: .04em; }
.auth-main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 40px;
  background: var(--surface);
}
.auth-box { width: 100%; max-width: 380px; }
.auth-box h1 { font-size: 26px; margin-bottom: 8px; letter-spacing: -.02em; }
.auth-box .sub { margin: 0 0 30px; font-size: 13.5px; color: var(--ink-2); }
.auth-box .foot-link { margin: 24px 0 0; font-size: 13.5px; color: var(--ink-2); text-align: center; }

/* ══════════ 自助换绑折叠块 ══════════ */
.rebind-box {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 18px;
  background: #fbfcfe;
}
.rebind-box > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color var(--t);
}
.rebind-box > summary::-webkit-details-marker { display: none; }
.rebind-box > summary::after {
  content: "";
  margin-left: auto;
  width: 16px; height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238791a6' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center / 12px no-repeat;
  transition: transform var(--t);
}
.rebind-box[open] > summary::after { transform: rotate(45deg); }
.rebind-box[open] > summary { border-bottom: 1px solid var(--line); }
.rebind-left { font-size: 12px; font-weight: 400; color: var(--ink-3); margin-left: 4px; }
.rebind-box form { padding: 18px 0 20px; }

/* ══════════ 响应式 ══════════ */
@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .plan-grid { grid-template-columns: 1fr;
    max-width: 520px; margin: 0 auto; }
  .plan.is-hot { order: -1; }
}

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 64px 24px 76px; }
  .hero h1 { font-size: 38px; }
  .hero-visual { max-width: 480px; }
  .float-chip.fc-a { right: 0; }
  .float-chip.fc-b { left: 0; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid::before { display: none; }
  .nav-links {
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { flex: none; white-space: nowrap; }
  .foot-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .auth-split { grid-template-columns: 1fr; min-height: 0; }
  .auth-aside { display: none; }
  .auth-main { padding: 48px 24px 64px; }
}

@media (max-width: 720px) {
  .wrap { padding: 22px 16px 56px; }
  .topbar-inner { padding: 0 16px; height: 58px; gap: 12px; }
  .brand { font-size: 14px; gap: 8px; }
  .brand small { display: none; }
  .section { padding: 56px 16px; }
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 26px; }
  .hero h1 { font-size: 32px; }
  .hero .lead { font-size: 14.5px; }
  .hero-meta { gap: 14px 22px; }
  .hero-actions .btn { flex: 1; }
  .feature-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  .cta-inner { padding: 60px 20px; }
  .cta h2 { font-size: 26px; }
  .foot-inner { grid-template-columns: 1fr; gap: 28px; padding-top: 44px; }
  .foot-bar { justify-content: center; text-align: center; }
  .card { padding: 18px 16px; border-radius: 12px; }
  .table { display: block; overflow-x: auto; white-space: nowrap; }
  .kv { grid-template-columns: 92px 1fr; }
  .page-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .page-head-meta { text-align: left; }
  .form-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat strong { font-size: 22px; }
  .subtabs { top: 58px; overflow-x: auto; scrollbar-width: none; }
  .subtabs::-webkit-scrollbar { display: none; }
  .subtab { white-space: nowrap; }
  .plan { padding: 26px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}