/* ===== Design tokens · iOS 黑紫（默认 = 二级提交页配色） ===== */
:root {
  --bg-base: #15151e;
  --bg-elev: #0d0d15;
  --bg-card: rgba(22, 22, 34, 0.6);
  --bg-card-solid: #14141f;
  --bg-card-hover: rgba(30, 30, 45, 0.7);
  --bg-input: rgba(255, 255, 255, 0.04);
  --bg-input-focus: rgba(108, 34, 236, 0.08);

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --text-primary: #ff8080;
  --text-secondary: #858599;
  --text-muted: #54545f;

  --accent: #6c22ec;
  --accent-2: #9333ea;
  --accent-hover: #5a1cc7;
  --accent-soft: rgba(108, 34, 236, 0.1);
  --accent-border: rgba(108, 34, 236, 0.25);

  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.08);
  --danger-border: rgba(220, 38, 38, 0.25);

  --warning: #d97706;
  --warning-soft: rgba(217, 119, 6, 0.08);
  --warning-border: rgba(217, 119, 6, 0.25);

  --info: #2563eb;
  --info-soft: rgba(37, 99, 235, 0.08);
  --info-border: rgba(37, 99, 235, 0.25);

  --success: #059669;
  --success-soft: rgba(5, 150, 105, 0.08);
  --success-border: rgba(5, 150, 105, 0.25);

  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.03);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.03);
  --shadow-glow: 0 6px 20px rgba(124, 58, 237, 0.18);

  --wechat-green: #07c160;
  --wechat-green-hover: #06ad56;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(ellipse 1000px 700px at 12% 8%, rgba(124, 58, 237, 0.066) 0%, transparent 55%),
    radial-gradient(ellipse 900px 600px at 88% 86%, rgba(91, 33, 182, 0.05) 0%, transparent 55%),
    radial-gradient(ellipse 1400px 800px at 50% 50%, rgba(88, 28, 135, 0.017) 0%, transparent 65%);
  background-attachment: fixed;
}

/* 一级落地页覆写：更暗底色 + 更亮文字 + 更强背景光（150%）*/
body.landing {
  --bg-base: #020203;
  --text-primary: #f8eded;
  --text-secondary: #8b8b95;
  background-image:
    radial-gradient(ellipse 1000px 700px at 12% 8%, rgba(124, 58, 237, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 900px 600px at 88% 86%, rgba(91, 33, 182, 0.09) 0%, transparent 55%),
    radial-gradient(ellipse 1400px 800px at 50% 50%, rgba(88, 28, 135, 0.03) 0%, transparent 65%);
}

button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
input:focus, textarea:focus { outline: none; }

/* ===== Layout ===== */
.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
  margin-right: 4px;
  transition: all 0.2s ease;
}
.back-link:hover {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--text-primary);
}
.brand-mark {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: white;
  box-shadow: var(--shadow-glow);
}
.brand-name { font-size: 16px; font-weight: 600; letter-spacing: 0.01em; }
.brand-sub { font-size: 12px; color: var(--text-muted); }

.mode-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
}
.mode-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 24px;
  align-items: start;
}
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
}

/* ===== Card ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.card + .card { margin-top: 20px; }

.card-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 20px;
}
.card-head h2 {
  margin: 0; font-size: 16px; font-weight: 600;
  letter-spacing: -0.01em;
}
.card-head .icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent-soft), rgba(217, 70, 239, 0.1));
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
}

/* ===== Field ===== */
.field { margin-bottom: 20px; }
.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}
.field-label .req { color: var(--danger); margin-left: 2px; }

.input,
.textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.input:focus, .textarea:focus {
  border-color: var(--accent-border);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.input::placeholder, .textarea::placeholder { color: var(--text-muted); }
.textarea { min-height: 80px; resize: vertical; line-height: 1.5; }

.input-with-actions {
  display: flex; gap: 8px;
}
.input-with-actions .input { flex: 1; }

.field-counter {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.field-counter strong { color: var(--text-secondary); }
.field-counter.bad strong { color: var(--danger); }
.field-counter.ok strong { color: var(--success); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--r-sm);
  transition: all 0.2s ease;
}
.btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: white;
  box-shadow: var(--shadow-glow);
}
.btn.primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  border-color: transparent;
  box-shadow: 0 12px 36px rgba(168, 85, 247, 0.4);
}
.btn.primary.large {
  width: 100%; padding: 15px;
  font-size: 15px; font-weight: 600;
  border-radius: var(--r-md);
  letter-spacing: 0.01em;
}
.btn.ghost { background: transparent; }
.btn.compact { padding: 9px 14px; font-size: 12px; }

.btn-row {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 20px;
}
.btn-row .helper {
  margin-left: auto;
  align-self: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== Alert banners ===== */
.alert {
  display: flex; gap: 10px;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  border: 1px solid;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 12px;
}
.alert .alert-icon { flex: none; font-size: 14px; }
.alert.danger { background: var(--danger-soft); border-color: var(--danger-border); color: #fca5a5; }
.alert.warning { background: var(--warning-soft); border-color: var(--warning-border); color: #fcd34d; }
.alert.info { background: var(--info-soft); border-color: var(--info-border); color: #93c5fd; }
.alert.success { background: var(--success-soft); border-color: var(--success-border); color: #6ee7b7; }
.alert strong { color: inherit; font-weight: 600; }

/* ===== Confirmations block ===== */
.confirm-block {
  border: 1px solid var(--danger-border);
  background: var(--danger-soft);
  border-radius: var(--r-md);
  padding: 16px;
  margin-bottom: 20px;
}
.confirm-block-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
  font-weight: 600;
  color: #fca5a5;
}
.confirm-list { list-style: none; margin: 0; padding: 0; }
.confirm-list label {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 8px 4px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.6;
}
.confirm-list input[type="checkbox"] {
  margin-top: 2px;
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}
.confirm-list .confirm-link {
  color: #fca5a5;
  text-decoration: underline;
  font-weight: 600;
}
.confirm-list .confirm-link:hover { color: var(--text-primary); }

/* ===== Result panel ===== */
.result-card { margin-top: 20px; }
.result-card.hidden { display: none; }
.result-topline {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px;
  background: var(--success-soft);
  border: 1px solid var(--success-border);
  border-radius: var(--r-md);
  margin-bottom: 16px;
}
.result-topline.fail {
  background: var(--danger-soft);
  border-color: var(--danger-border);
}
.result-badge {
  flex: none;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-size: 18px;
}
.result-topline:not(.fail) .result-badge { background: var(--success); color: white; }
.result-topline.fail .result-badge { background: var(--danger); color: white; }
.result-title { margin: 0; font-size: 15px; font-weight: 600; }
.result-msg { margin: 4px 0 0 0; font-size: 13px; color: var(--text-secondary); }

/* ===== TOTP panel ===== */
.totp-input { margin-bottom: 14px; }
.otp-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}
.otp-cell {
  aspect-ratio: 1 / 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  font-weight: 600;
  font-family: ui-monospace, monospace;
  color: var(--accent);
}
.otp-cell.empty { color: var(--text-muted); }
.totp-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.totp-bar {
  height: 4px;
  background: var(--bg-input);
  border-radius: 999px;
  overflow: hidden;
}
.totp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #ec4899);
  transition: width 1s linear;
}
.totp-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 8px;
  display: none;
}
.totp-error.show { display: block; }

/* ===== Modal (教程) ===== */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  align-items: center; justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  width: 100%;
  max-width: 480px;
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.modal h3 { margin: 0 0 12px 0; font-size: 16px; }
.modal p { color: var(--text-secondary); font-size: 13px; }
.modal .form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* ===== Validate state ===== */
.validate-status {
  margin-top: 8px;
  font-size: 12px;
  display: none;
}
.validate-status.show { display: block; }
.validate-status.ok { color: var(--success); }
.validate-status.bad { color: var(--danger); }
.validate-status .spinner {
  display: inline-block;
  width: 10px; height: 10px;
  border: 2px solid var(--text-muted);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 4px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 通用工具 ===== */
.hidden { display: none !important; }

/* ===== 验证方式切换 + 备用码 ===== */
.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.radio-option {
  flex: 1;
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-input);
  transition: border-color 0.15s, background 0.15s;
}
.radio-option:hover { border-color: var(--border-strong); }
.radio-option input[type="radio"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
}
.radio-option input[type="radio"]:checked + span { color: var(--accent); font-weight: 600; }

.backup-secondary { margin-top: 8px; }

/* ===== 提交结果：任务状态轮询 ===== */
.task-watch {
  margin-top: 18px;
  padding: 20px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s, background 0.2s;
}
.task-watch-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
}
.task-watch-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 50%;
  font-size: 24px;
  flex: none;
}
.task-watch-title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}
.task-watch-phase {
  margin: 4px 0 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  word-break: break-word;
}
.task-watch-badge {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
}
.task-watch-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}
.task-watch-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  font-size: 13px;
  line-height: 1.5;
}
.task-watch-row > span:first-child {
  color: var(--text-muted);
  font-size: 12px;
}
.task-watch-row strong {
  color: var(--text-primary);
  font-weight: 500;
  word-break: break-word;
}
.task-watch-row code {
  font-family: ui-monospace, SF Mono, Consolas, monospace;
  color: var(--text-primary);
  font-size: 12px;
  word-break: break-all;
}
.task-watch-row.muted > span { color: var(--text-muted); font-size: 12px; }
.task-watch-hint {
  margin: 0;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
}

/* 四种 data-state 视觉 */
.task-watch[data-state="processing"] { border-color: var(--accent); }
.task-watch[data-state="processing"] .task-watch-icon {
  animation: spin 1.8s linear infinite;
}
.task-watch[data-state="success"] {
  border-color: var(--success-border);
  background: linear-gradient(180deg, var(--success-soft) 0%, var(--bg-card) 40%);
}
.task-watch[data-state="success"] .task-watch-icon { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.task-watch[data-state="success"] .task-watch-badge { background: rgba(16, 185, 129, 0.15); color: var(--success); border-color: var(--success-border); }
.task-watch[data-state="failed"] {
  border-color: var(--danger-border);
  background: linear-gradient(180deg, var(--danger-soft) 0%, var(--bg-card) 40%);
}
.task-watch[data-state="failed"] .task-watch-icon { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.task-watch[data-state="failed"] .task-watch-badge { background: rgba(239, 68, 68, 0.15); color: var(--danger); border-color: var(--danger-border); }
.task-watch[data-state="pending_manual"] {
  border-color: var(--warning-border);
  background: linear-gradient(180deg, var(--warning-soft) 0%, var(--bg-card) 40%);
}
.task-watch[data-state="pending_manual"] .task-watch-icon { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.task-watch[data-state="pending_manual"] .task-watch-badge { background: rgba(245, 158, 11, 0.15); color: var(--warning); border-color: var(--warning-border); }

/* ===== 侧栏：按卡密查询任务列表 ===== */
.card-lookup .helper {
  margin: 0 0 12px 0;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
}
.card-lookup .input-with-actions { gap: 8px; }
.lookup-error {
  margin-top: 10px;
  font-size: 12px;
  color: var(--danger);
  min-height: 0;
}
.lookup-error:not(:empty) { min-height: 18px; }
.task-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.task-list-empty {
  margin-top: 14px;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}
.task-list-item {
  padding: 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--bg-input);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.task-list-item-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.task-list-item-phase {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  word-break: break-word;
}
.task-list-item-badge {
  flex: none;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
}
.task-list-item-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 8px;
  font-size: 12px;
  line-height: 1.5;
}
.task-list-item-row > span:first-child { color: var(--text-muted); }
.task-list-item-row code {
  font-family: ui-monospace, SF Mono, Consolas, monospace;
  color: var(--text-primary);
  word-break: break-all;
}
.task-list-item-row strong { color: var(--text-primary); font-weight: 500; word-break: break-word; }
.task-list-item[data-state="success"] { border-color: var(--success-border); background: rgba(16, 185, 129, 0.08); }
.task-list-item[data-state="success"] .task-list-item-badge { border-color: var(--success-border); color: var(--success); background: rgba(16, 185, 129, 0.15); }
.task-list-item[data-state="failed"] { border-color: var(--danger-border); background: rgba(239, 68, 68, 0.08); }
.task-list-item[data-state="failed"] .task-list-item-badge { border-color: var(--danger-border); color: var(--danger); background: rgba(239, 68, 68, 0.15); }
.task-list-item[data-state="pending_manual"] { border-color: var(--warning-border); background: rgba(245, 158, 11, 0.08); }
.task-list-item[data-state="pending_manual"] .task-list-item-badge { border-color: var(--warning-border); color: var(--warning); background: rgba(245, 158, 11, 0.15); }
.task-list-item-refresh {
  align-self: flex-start;
  margin-top: 2px;
}

/* ===== 微信客服浮窗 ===== */
.support-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
}

.support-card {
  width: 320px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  padding: 18px;
  position: relative;
  transform-origin: bottom right;
  transition: opacity 0.2s, transform 0.2s;
}

.support-widget.collapsed .support-card {
  opacity: 0;
  transform: scale(0.85);
  pointer-events: none;
  visibility: hidden;
}

.support-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.support-close:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.support-head {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  padding-right: 24px;
}
.support-avatar {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--wechat-green);
  display: flex;
  align-items: center;
  justify-content: center;
}
.support-head-text { min-width: 0; }
.support-title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.support-sub {
  margin: 2px 0 0 0;
  font-size: 12px;
  color: var(--text-secondary);
}

.support-body {
  margin: 0 0 14px 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.support-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 11px 14px;
  background: var(--wechat-green);
  color: white;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: background 0.15s;
}
.support-cta:hover { background: var(--wechat-green-hover); }

.support-fab {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--wechat-green);
  box-shadow: var(--shadow-md);
  display: none;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, transform 0.15s;
}
.support-fab:hover {
  background: var(--wechat-green-hover);
  transform: scale(1.06);
}
.support-widget.collapsed .support-fab { display: flex; }

@media (max-width: 768px) {
  .support-widget { display: none; }
}