/* ============ 财会百晓生 · 共用样式 ============ */
:root {
  --primary: #185FA5;
  --primary-dark: #0C447C;
  --primary-light: #B5D4F4;
  --primary-deep: #042C53;
  --primary-bg: #E6F1FB;
  --gold: #D4A843;
  --success: #0E7C3A;
  --danger: #C0392B;
  --warning: #B7791F;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --gray-900: #111827;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  background: var(--gray-50); color: var(--gray-900);
  line-height: 1.6;
}
.emoji {
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", system-ui, -apple-system, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
.hidden { display: none !important; }
a { color: var(--primary); }

/* === Top Bar === */
.top-bar { background: var(--primary-deep); color: white; padding: 8px 20px; font-size: 13px; display: flex; justify-content: space-between; }
.top-bar a { color: var(--primary-light); text-decoration: none; }

/* === Header === */
.header {
  background: white; border-bottom: 3px solid var(--primary);
  padding: 14px 24px; display: flex; align-items: center; gap: 14px;
  position: sticky; top: 0; z-index: 100;
}
.header-logo { width: 40px; height: 40px; flex-shrink: 0; }
.header-title { font-size: 22px; font-weight: bold; color: var(--primary); }
.header-sub { font-size: 11px; color: var(--primary-dark); letter-spacing: 2px; }
.header-nav { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.header-nav a, .header-nav .nav-btn {
  color: var(--primary); text-decoration: none; font-size: 14px;
  padding: 6px 12px; border-radius: 4px; cursor: pointer; background: none; border: none;
  font-family: inherit;
}
.header-nav .nav-btn:hover, .header-nav a:hover { background: var(--primary-bg); }
.header-nav .primary-btn {
  background: var(--primary); color: white; padding: 8px 16px; border-radius: 8px;
  font-weight: 600;
}
.header-nav .primary-btn:hover { background: var(--primary-dark); color: white; }
.header-nav .outline-btn {
  border: 1.5px solid var(--primary); background: white; padding: 8px 14px;
  border-radius: 8px; font-weight: 600;
}
.header-nav .outline-btn:hover { background: var(--primary-bg); }

/* === Hero === */
.hero { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: white; padding: 40px 24px; text-align: center; }
.hero h1 { font-size: 32px; margin-bottom: 8px; }
.hero p { font-size: 16px; opacity: 0.9; margin-bottom: 20px; }
.hero-badges { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.badge { background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); padding: 6px 16px; border-radius: 20px; font-size: 13px; }
.badge.gold { background: rgba(212,168,67,0.25); border-color: var(--gold); }

/* === Main === */
.main { max-width: 800px; margin: 0 auto; padding: 24px 20px; }

/* === Step Sections === */
.step-section { background: white; border-radius: 12px; padding: 24px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.step-label { font-size: 13px; font-weight: bold; color: var(--primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.step-label::before {
  content: ''; width: 24px; height: 24px; background: var(--primary); color: white;
  border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px;
}
.step-1-label::before { content: '1'; }
.step-2-label::before { content: '2'; }
.step-3-label::before { content: '3'; }
.step-section.disabled { opacity: 0.4; pointer-events: none; }
.step-section.disabled .step-label { color: var(--gray-500); }

/* === Mode Selector === */
.mode-selector { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.mode-card {
  border: 2px solid var(--gray-200); border-radius: 10px; padding: 20px 16px;
  text-align: center; cursor: pointer; transition: all 0.2s; background: var(--gray-50);
}
.mode-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.mode-card.active { border-color: var(--primary); background: var(--primary-bg); box-shadow: 0 4px 12px rgba(24,95,165,0.15); }
.mode-card .mode-icon { font-size: 28px; margin-bottom: 8px; }
.mode-card .mode-title { font-size: 15px; font-weight: bold; color: var(--gray-900); margin-bottom: 4px; }
.mode-card.active .mode-title { color: var(--primary); }
.mode-card .mode-desc { font-size: 12px; color: var(--gray-500); }
.mode-card .mode-desc-note { font-size: 11px; color: var(--gray-400); }

/* === Course Grid === */
.course-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.course-item {
  border: 2px solid var(--gray-200); border-radius: 10px; padding: 16px;
  cursor: pointer; transition: all 0.2s; background: white;
}
.course-item:hover { border-color: var(--primary-light); }
.course-item.selected { border-color: var(--primary); background: var(--primary-bg); }
.course-item.trial-mode { border-style: dashed; }
.course-item.trial-mode.selected { border-color: var(--gold); background: rgba(212,168,67,0.08); }
.course-item-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; gap: 8px; }
.course-item-name { font-size: 16px; font-weight: bold; color: var(--gray-900); }
.course-item-price { font-size: 18px; font-weight: bold; color: var(--primary); white-space: nowrap; }
.version-toggle { display: flex; gap: 6px; margin-top: 8px; }
.version-btn {
  flex: 1; padding: 6px 8px; border: 1.5px solid var(--gray-200); border-radius: 6px;
  text-align: center; cursor: pointer; font-size: 12px; transition: all 0.15s;
  background: white; color: var(--gray-700);
}
.version-btn:hover { border-color: var(--primary); }
.version-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.course-item-desc { font-size: 12px; color: var(--gray-500); margin-top: 6px; }
.preview-tag {
  display: inline-flex; align-items: center; gap: 3px; font-size: 11px; padding: 2px 8px;
  border-radius: 4px; background: var(--primary-bg); color: var(--primary);
  border: 0.5px solid var(--primary-light); cursor: pointer; transition: all 0.15s;
}
.preview-tag:hover { background: var(--primary); color: white; border-color: var(--primary); }
.course-item-footer { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.semester-title, .chip-group-title {
  grid-column: 1 / -1; font-size: 15px; font-weight: bold; color: var(--gray-700);
  padding: 14px 4px 6px; margin-top: 4px; border-bottom: 2px solid var(--primary-light);
}

/* === Sub Sections === */
.sub-section { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--gray-200); }
.sub-section-title { font-size: 14px; font-weight: bold; color: var(--gray-700); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sub-section-hint { font-size: 12px; color: var(--gray-500); font-weight: normal; }
.sub-section-note { font-size: 11px; color: var(--gray-400); font-weight: normal; margin-left: auto; }
.trial-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.trial-chip {
  padding: 8px 14px; border: 2px solid var(--gray-200); border-radius: 8px; cursor: pointer;
  font-size: 13px; transition: all 0.15s; background: white; display: flex; align-items: center; gap: 6px;
}
.trial-chip:hover:not(.disabled) { border-color: var(--gold); }
.trial-chip.selected { border-color: var(--gold); background: rgba(212,168,67,0.1); color: var(--gold); font-weight: bold; }
.trial-chip.disabled { opacity: 0.4; cursor: not-allowed; }
.chip-tag { font-size: 11px; padding: 2px 6px; border-radius: 4px; background: var(--gray-100); color: var(--gray-500); }
.chip-price { font-weight: bold; color: var(--primary); }
.sub-section-empty { font-size: 13px; color: var(--gray-500); padding: 8px 0; }

/* === Summary + Form === */
.summary-box { background: var(--primary-bg); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.summary-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; }
.summary-row.total { border-top: 2px solid var(--primary-light); margin-top: 8px; padding-top: 12px; }
.summary-row.total .label { font-size: 16px; font-weight: bold; }
.summary-row.total .value { font-size: 28px; font-weight: bold; color: var(--primary); }
.summary-row .label { font-size: 14px; color: var(--gray-700); }
.summary-row .value { font-size: 14px; font-weight: bold; }
.summary-row .saved { color: var(--success); }
.summary-row .gift { color: var(--gold); font-weight: bold; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-field label { display: block; font-size: 13px; font-weight: bold; color: var(--gray-700); margin-bottom: 4px; }
.form-field input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--gray-300); border-radius: 6px;
  font-size: 14px; font-family: inherit;
}
.form-field input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.submit-btn {
  width: 100%; padding: 14px; background: var(--primary); color: white; border: none;
  border-radius: 8px; font-size: 16px; font-weight: bold; cursor: pointer; transition: background 0.2s;
  font-family: inherit;
}
.submit-btn:hover { background: var(--primary-dark); }
.submit-btn:disabled { background: var(--gray-300); cursor: not-allowed; }

/* === Device Tip === */
.device-tip {
  display: flex; gap: 14px; align-items: flex-start;
  background: linear-gradient(135deg, #FFF8E1 0%, var(--primary-bg) 100%);
  border: 2px solid var(--primary-light); border-radius: 10px; padding: 16px 18px;
  margin-top: 20px; font-size: 14px; color: var(--gray-900); line-height: 1.7;
  box-shadow: 0 2px 8px rgba(24,95,165,0.08);
}
.device-tip-icon { font-size: 32px; flex-shrink: 0; }
.device-tip .hl-kw { color: var(--primary-dark); font-weight: 700; }
.device-tip strong { color: var(--primary); font-size: 15px; }

/* === Why Section === */
.why-section { max-width: 800px; margin: 20px auto 0; padding: 0 20px; }
.why-toggle {
  display: flex; justify-content: space-between; align-items: center; background: white;
  border: 1px solid var(--gray-200); border-radius: 12px; padding: 16px 22px; cursor: pointer;
  transition: all 0.2s; box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.why-toggle:hover { border-color: var(--primary-light); }
.why-toggle-title { font-size: 19px; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 10px; }
.why-bulb { font-size: 24px; animation: bulb-pulse 1.6s ease-in-out infinite; }
@keyframes bulb-pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.18)} }
.why-arrow { font-size: 16px; color: var(--gray-500); transition: transform 0.3s; }
.why-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.why-content.expanded { max-height: 4000px; }
.why-inner { padding: 16px 0 4px; }
.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.pillar-mini { background: white; border: 1px solid var(--gray-200); border-radius: 10px; padding: 14px; transition: border-color 0.2s; }
.pillar-mini:hover { border-color: var(--primary-light); }
.pillar-mini h4 { font-size: 13px; font-weight: 600; color: var(--primary-dark); margin-bottom: 4px; }
.pillar-mini p { font-size: 12px; color: var(--gray-500); line-height: 1.5; }
.pillar-num {
  display: inline-block; width: 22px; height: 22px; background: var(--primary-bg); color: var(--primary);
  border-radius: 50%; text-align: center; line-height: 22px; font-size: 12px; font-weight: 700; margin-bottom: 6px;
}
.cmp-wrap { border: 1px solid var(--gray-200); border-radius: 10px; overflow-x: auto; }
.cmp-tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.cmp-tbl th, .cmp-tbl td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--gray-200); }
.cmp-tbl th { background: var(--primary-bg); color: var(--primary-dark); font-weight: 600; font-size: 12px; }
.cmp-tbl th.th-dim { background: var(--primary-deep); color: white; }
.cmp-tbl th.th-them { background: var(--gray-100); color: var(--gray-700); }
.cmp-tbl td.us { background: #FAFCFE; color: var(--primary-dark); line-height: 1.6; }
.cmp-tbl td.them { color: var(--gray-500); }
.cmp-tbl td.dim { font-weight: 600; background: var(--gray-50); font-size: 12px; }
.cmp-tbl .hl-kw { background: linear-gradient(180deg, transparent 60%, rgba(245,207,117,0.55) 60%); padding: 0 2px; font-weight: 600; color: var(--primary-deep); border-radius: 2px; }
.cmp-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; padding: 4px 14px; border-radius: 14px; font-weight: 600; margin-left: 6px; }
.cmp-badge.us { background: #E8F5E9; color: #1B5E20; border: 1.5px solid #2E7D32; }
.cmp-badge.them { background: var(--gray-100); color: var(--gray-700); border: 1.5px solid var(--gray-300); }
.cmp-badge .dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.cmp-badge.us .dot { background: #2E7D32; box-shadow: 0 0 6px rgba(46,125,50,0.6); animation: badge-pulse 1.6s ease-in-out infinite; }
.cmp-badge.them .dot { background: var(--gray-500); animation: badge-pulse 1.6s ease-in-out infinite; }
@keyframes badge-pulse { 0%,100%{transform:scale(1);opacity:1} 50%{transform:scale(1.3);opacity:.55} }

/* === Footer === */
.footer { background: var(--primary-deep); color: white; padding: 28px 20px; text-align: center; font-size: 13px; margin-top: 40px; }
.footer .qr-box { width: 110px; height: 110px; border-radius: 6px; background: white; padding: 4px; }
.footer .foot-row { display: flex; justify-content: center; align-items: center; gap: 14px; }
.footer .foot-text { text-align: left; font-size: 13px; line-height: 1.8; opacity: 0.95; }
.footer .foot-links { margin-top: 16px; opacity: 0.75; }
.footer .foot-links a { color: var(--primary-light); margin: 0 8px; text-decoration: none; }
.footer .foot-links a:hover { text-decoration: underline; }

/* === Toast === */
.toast {
  position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: 8px;
  color: white; font-size: 14px; z-index: 9999; animation: slideIn 0.3s ease; max-width: 320px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* === Payment Overlay === */
.pay-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.75); z-index: 10002;
  display: flex; align-items: flex-start; justify-content: center; overflow-y: auto; padding: 20px;
}
.pay-container {
  background: white; border-radius: 14px; max-width: 480px; width: 100%; padding: 28px 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.3); margin: auto;
}
.pay-container h2 { font-size: 20px; color: var(--gray-900); text-align: center; margin-bottom: 4px; }
.pay-sub { font-size: 13px; color: var(--gray-500); text-align: center; margin-bottom: 16px; }
.pay-amount { font-size: 36px; font-weight: bold; color: var(--danger); text-align: center; margin: 12px 0; }
.pay-amount small { font-size: 14px; color: var(--gray-500); font-weight: normal; }
.pay-steps { background: var(--gray-50); border-radius: 8px; padding: 12px 16px; font-size: 12px; color: var(--gray-700); line-height: 2; margin-bottom: 16px; }
.pay-steps span { display: inline-block; width: 20px; height: 20px; background: var(--primary); color: white; border-radius: 50%; text-align: center; line-height: 20px; font-size: 11px; margin-right: 4px; }
.pay-qr-row { display: flex; gap: 12px; justify-content: center; margin-bottom: 16px; }
.pay-qr-item { text-align: center; flex: 1; }
.pay-qr-item img { width: 140px; height: 140px; object-fit: contain; border-radius: 8px; border: 2px solid var(--gray-200); background: white; }
.pay-qr-label { font-size: 12px; color: var(--gray-700); margin-top: 4px; font-weight: 500; }
.pay-code-box {
  background: var(--primary-bg); border: 1.5px dashed var(--primary); border-radius: 8px;
  padding: 12px; display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 16px; flex-wrap: wrap;
}
.pay-code-label { font-size: 12px; color: var(--primary-dark); }
.pay-code-val { font-size: 24px; font-weight: bold; color: var(--primary); font-family: monospace; letter-spacing: 4px; }
.pay-code-copy {
  font-size: 12px; color: var(--primary); cursor: pointer; padding: 4px 10px;
  border: 1px solid var(--primary); border-radius: 4px; background: white;
}
.pay-code-copy:hover { background: var(--primary); color: white; }
.pay-input {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--gray-300); border-radius: 8px;
  font-size: 14px; font-family: inherit; margin-bottom: 10px;
}
.pay-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.pay-btn {
  width: 100%; padding: 14px; background: var(--primary); color: white; border: none;
  border-radius: 8px; font-size: 15px; font-weight: bold; cursor: pointer; margin-top: 4px; font-family: inherit;
}
.pay-btn:hover { background: var(--primary-dark); }
.pay-btn:disabled { background: var(--gray-300); cursor: not-allowed; }
.pay-back { display: block; text-align: center; font-size: 13px; color: var(--gray-500); cursor: pointer; margin-top: 12px; text-decoration: none; }
.pay-back:hover { color: var(--primary); }
.pay-result { margin-top: 16px; }
.pay-result h3 { font-size: 16px; margin-bottom: 8px; }
.pay-wait { text-align: center; padding: 20px 0; }
.wait-spinner { width: 40px; height: 40px; border: 4px solid var(--gray-200); border-top-color: var(--primary); border-radius: 50%; margin: 0 auto 16px; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.wait-title { font-size: 16px; color: var(--gray-900); margin-bottom: 8px; }
.wait-sub { font-size: 13px; color: var(--gray-500); line-height: 1.8; }
.wait-count { font-size: 12px; color: var(--gray-400); margin-top: 12px; }
.status-pill { display: inline-block; padding: 3px 12px; border-radius: 12px; font-size: 13px; font-weight: 600; }
.status-pending { background: #FEF3C7; color: var(--warning); }
.status-approved { background: #E8F5E9; color: var(--success); }
.status-rejected { background: #FDECEA; color: var(--danger); }
.result-card { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 10px; padding: 14px; font-size: 13px; line-height: 1.9; }
.result-card .k { color: var(--gray-500); }
.result-card .v { font-weight: 600; color: var(--gray-900); }
.access-code-box { display: flex; align-items: center; justify-content: space-between; gap: 8px; background: var(--primary-bg); border: 1.5px dashed var(--primary); border-radius: 8px; padding: 10px 12px; margin-top: 10px; }

/* === Confirm / Preview / My Courses Modal === */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 10000; display: flex; align-items: center; justify-content: center; }
.modal-box { background: white; border-radius: 12px; padding: 28px; max-width: 420px; width: 90%; box-shadow: 0 8px 32px rgba(0,0,0,0.2); }
.modal-box h3 { color: var(--primary); margin-bottom: 12px; font-size: 18px; }
.modal-box p { color: var(--gray-700); margin-bottom: 20px; line-height: 1.6; font-size: 14px; }
.modal-buttons { display: flex; gap: 12px; }
.modal-buttons button { flex: 1; padding: 12px; border-radius: 8px; font-size: 14px; font-weight: bold; cursor: pointer; border: none; font-family: inherit; }
.modal-buttons .btn-secondary { background: var(--gray-100); color: var(--gray-700); }
.modal-buttons .btn-secondary:hover { background: var(--gray-200); }
.modal-buttons .btn-primary { background: var(--primary); color: white; }
.modal-buttons .btn-primary:hover { background: var(--primary-dark); }

.mc-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 10003;
  display: flex; align-items: flex-start; justify-content: center; overflow-y: auto; padding: 40px 20px;
}
.mc-container {
  background: white; border-radius: 14px; max-width: 500px; width: 100%; padding: 32px 28px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.3); margin: auto;
}
.mc-close { float: right; font-size: 22px; color: var(--gray-300); cursor: pointer; line-height: 1; }
.mc-close:hover { color: var(--gray-700); }
.mc-title { font-size: 20px; font-weight: bold; color: var(--gray-900); text-align: center; margin-bottom: 4px; }
.mc-sub { font-size: 13px; color: var(--gray-500); text-align: center; margin-bottom: 20px; }
.mc-input {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--gray-300); border-radius: 8px;
  font-size: 15px; font-family: inherit; margin-bottom: 12px;
}
.mc-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.mc-input.code { font-family: monospace; letter-spacing: 4px; text-transform: uppercase; text-align: center; font-size: 18px; }
.mc-btn {
  width: 100%; padding: 14px; background: var(--primary); color: white; border: none;
  border-radius: 8px; font-size: 15px; font-weight: bold; cursor: pointer; font-family: inherit;
}
.mc-btn:hover { background: var(--primary-dark); }
.mc-msg { text-align: center; font-size: 13px; margin-top: 12px; min-height: 20px; }
.mc-msg.error { color: var(--danger); }
.mc-msg.success { color: var(--success); }
.mc-tools-header { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--gray-100); margin-bottom: 12px; }
.mc-user-name { font-size: 15px; font-weight: 600; color: var(--gray-900); }
.mc-logout-btn { font-size: 12px; color: var(--gray-500); cursor: pointer; padding: 4px 8px; border-radius: 4px; }
.mc-logout-btn:hover { color: var(--danger); background: rgba(220,53,69,0.08); }
.mc-tool-card {
  display: flex; align-items: center; padding: 14px 16px; border: 1px solid var(--gray-200);
  border-radius: 10px; margin-bottom: 10px; transition: border-color 0.2s, box-shadow 0.2s;
}
.mc-tool-card:hover { border-color: var(--primary); box-shadow: 0 2px 8px rgba(24,95,165,0.1); }
.mc-tool-icon {
  width: 44px; height: 44px; line-height: 44px; text-align: center; font-size: 18px; font-weight: 700;
  color: white; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 10px; margin-right: 14px; flex-shrink: 0;
}
.mc-tool-info { flex: 1; }
.mc-tool-name { font-size: 15px; font-weight: 600; color: var(--gray-900); }
.mc-tool-ver { font-size: 12px; color: var(--gray-500); }
.mc-tool-enter {
  padding: 8px 20px; background: var(--primary); color: white; border: none; border-radius: 6px;
  font-size: 14px; font-weight: 600; cursor: pointer; white-space: nowrap; font-family: inherit; text-decoration: none;
}
.mc-tool-enter:hover { background: var(--primary-dark); }
.mc-tool-enter.gold { background: var(--gold); }

/* === Preview modal === */
.preview-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 10001; display: flex; align-items: center; justify-content: center; padding: 20px; }
.preview-box { background: white; border-radius: 12px; max-width: 720px; width: 100%; overflow: hidden; }
.preview-header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--gray-200); }
.preview-header-title { font-size: 16px; font-weight: bold; color: var(--gray-900); }
.preview-close { font-size: 22px; color: var(--gray-500); cursor: pointer; background: none; border: none; }
.preview-body { padding: 18px 22px 24px; font-size: 14px; line-height: 1.9; color: var(--gray-700); max-height: 60vh; overflow-y: auto; }
.preview-body h4 { color: var(--primary-dark); margin: 12px 0 6px; font-size: 15px; }
.preview-body ul { padding-left: 20px; }
.preview-body mark { background: linear-gradient(180deg, transparent 55%, #FDE68A 55%); color: inherit; padding: 0 2px; }

/* ============================================================
   数据列表页 · 知识卡片（参考截图展现形式）
   ============================================================ */
.list-main { max-width: 1400px; margin: 0 auto; padding: 20px; }

.list-hero {
  background: white; border: 1px solid var(--gray-200); border-radius: 14px;
  padding: 20px 24px; margin-bottom: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.list-hero .lh-title { font-size: 22px; font-weight: 800; color: var(--primary-deep); }
.list-hero .lh-sub { font-size: 13px; color: var(--gray-500); margin-top: 2px; }
.list-hero .lh-qr { margin-left: auto; text-align: center; font-size: 11px; color: var(--gray-500); }
.list-hero .lh-qr img { width: 78px; height: 78px; border: 1px solid var(--gray-200); border-radius: 6px; background: white; }
.lh-stats { display: flex; gap: 14px; flex-wrap: wrap; }
.lh-stat { background: var(--primary-bg); border-radius: 10px; padding: 6px 14px; font-size: 12px; color: var(--primary-dark); }
.lh-stat b { font-size: 17px; margin-right: 4px; }

/* tabs */
.list-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.list-tab {
  padding: 9px 18px; border: 1.5px solid var(--gray-200); background: white; border-radius: 20px;
  font-size: 14px; cursor: pointer; color: var(--gray-700); transition: all 0.15s; font-family: inherit;
}
.list-tab:hover { border-color: var(--primary-light); color: var(--primary); }
.list-tab.active { background: var(--primary); border-color: var(--primary); color: white; font-weight: 600; }
.list-tab .cnt { font-size: 11px; opacity: 0.75; margin-left: 4px; }

/* toolbar */
.list-toolbar {
  background: white; border: 1px solid var(--gray-200); border-radius: 12px; padding: 12px 16px;
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 16px;
}
.search-box { flex: 1; min-width: 220px; position: relative; }
.search-box input {
  width: 100%; padding: 9px 12px 9px 34px; border: 1.5px solid var(--gray-200); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: var(--gray-50);
}
.search-box input:focus { outline: none; border-color: var(--primary); background: white; box-shadow: 0 0 0 3px var(--primary-bg); }
.search-box::before { content: '🔍'; position: absolute; left: 9px; top: 50%; transform: translateY(-50%); font-size: 13px; opacity: .6; }
.filter-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-chip {
  padding: 6px 12px; border: 1.5px solid var(--gray-200); border-radius: 16px; background: white;
  font-size: 12px; cursor: pointer; color: var(--gray-600, #4B5563); transition: all 0.15s; font-family: inherit;
}
.filter-chip:hover { border-color: var(--primary-light); }
.filter-chip.active { background: var(--primary-bg); border-color: var(--primary); color: var(--primary); font-weight: 600; }
.list-count { font-size: 13px; color: var(--gray-500); }
.list-count b { color: var(--primary); font-size: 16px; }

/* card grid (瀑布流：绝对定位由 list.js masonryLayout 计算) */
.card-grid { position: relative; }
.kcard {
  break-inside: avoid; background: white; border: 1px solid var(--gray-200); border-radius: 10px;
  margin-bottom: 14px; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s; display: inline-block; width: 100%;
}
.kcard:hover { border-color: var(--primary-light); box-shadow: 0 6px 18px rgba(24,95,165,0.14); transform: translateY(-2px); }
.kcard-head { background: var(--primary); color: white; padding: 9px 14px; display: flex; align-items: center; gap: 8px; }
.kcard-head .k-no {
  font-size: 11px; background: rgba(255,255,255,0.22); border: 1px solid rgba(255,255,255,0.4);
  padding: 1px 8px; border-radius: 10px; white-space: nowrap;
}
.kcard-head .k-cat { font-size: 11px; opacity: .85; margin-left: auto; white-space: nowrap; }
.kcard.cat-finh > .kcard-head { background: #0E7C3A; }
.kcard.cat-corp > .kcard-head { background: #6B21A8; }
.kcard.cat-empr > .kcard-head { background: #B45309; }
.kcard-title { font-size: 15.5px; font-weight: 800; color: var(--gray-900); padding: 12px 14px 8px; line-height: 1.5; }
.kcard-body { padding: 0 14px 10px; font-size: 13px; color: var(--gray-700); line-height: 1.85; }
.kcard-body p { margin-bottom: 8px; }
.kcard-body .k-sec {
  font-size: 13px; font-weight: 700; color: var(--primary-dark); margin: 10px 0 6px;
  padding-left: 8px; border-left: 3px solid var(--primary);
}
.kcard-body ul { padding-left: 18px; margin-bottom: 8px; }
.kcard-body li { margin-bottom: 4px; }
.kcard-body mark, .kcard-body .hl {
  background: linear-gradient(180deg, transparent 55%, #FDE68A 55%); color: inherit;
  padding: 0 2px; font-weight: 600;
}
.kcard-body .formula {
  background: #F1F6FD; border: 1px solid var(--primary-light); border-radius: 6px;
  padding: 8px 10px; margin: 8px 0; font-family: "Consolas", "Courier New", monospace;
  font-size: 12.5px; color: var(--primary-dark); line-height: 1.8; word-break: break-all;
}
.kcard-body .note {
  background: #FFF8E1; border-left: 3px solid var(--gold); border-radius: 0 6px 6px 0;
  padding: 8px 10px; margin: 8px 0; font-size: 12.5px; color: #7A5B12;
}
.kcard-body .warn {
  background: #FDECEA; border-left: 3px solid var(--danger); border-radius: 0 6px 6px 0;
  padding: 8px 10px; margin: 8px 0; font-size: 12.5px; color: #8C2F22;
}
.kcard-body .quote {
  background: var(--gray-50); border: 1px dashed var(--gray-300); border-radius: 6px;
  padding: 8px 10px; margin: 8px 0; font-size: 12.5px; color: var(--gray-600, #4B5563);
}
.kcard-foot { border-top: 1px dashed var(--gray-200); padding: 8px 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.ktag {
  font-size: 11px; padding: 2px 9px; border-radius: 4px; background: var(--primary-bg);
  color: var(--primary-dark); border: 0.5px solid var(--primary-light);
}
.ktag.gold { background: rgba(212,168,67,0.15); color: #8A6A1F; border-color: rgba(212,168,67,0.5); }
.ktag.green { background: #E8F5E9; color: #1B5E20; border-color: #A5D6A7; }
.ktag.purple { background: #F3E8FF; color: #6B21A8; border-color: #D8B4FE; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--gray-500); font-size: 14px; }
.empty-state .es-icon { font-size: 42px; margin-bottom: 10px; }

/* table view (讲义索引) */
.tbl-wrap { background: white; border: 1px solid var(--gray-200); border-radius: 12px; overflow-x: auto; }
.data-tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 640px; }
.data-tbl th, .data-tbl td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--gray-200); }
.data-tbl th { background: var(--primary-deep); color: white; font-size: 13px; font-weight: 600; position: sticky; top: 0; }
.data-tbl tr:hover td { background: var(--primary-bg); }
.data-tbl td.idx { color: var(--gray-400); width: 48px; }
.data-tbl .cell-topic { font-weight: 600; color: var(--gray-900); }
.data-tbl .cell-page { color: var(--primary); font-weight: 700; }
.data-tbl .cell-q { color: var(--danger); font-weight: 700; }
.data-tbl tr:last-child td { border-bottom: none; }

/* list footer nav */
.back-home {
  display: inline-flex; align-items: center; gap: 6px; margin-bottom: 14px; font-size: 13px;
  color: var(--primary); text-decoration: none; cursor: pointer;
}
.back-home:hover { text-decoration: underline; }

/* === Responsive === */
@media (max-width: 900px) {
  .pillar-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 24px; }
  .hero p { font-size: 14px; }
  .mode-selector, .course-grid, .form-row { grid-template-columns: 1fr; }
  .header { flex-wrap: wrap; padding: 10px 16px; gap: 8px; }
  .header-nav { display: flex; flex-wrap: wrap; justify-content: center; width: 100%; margin-left: 0; gap: 6px; }
  .header-nav a, .header-nav .nav-btn { font-size: 12px; padding: 5px 10px; }
  .list-hero .lh-qr { display: none; }
}