/* ====== Reset & Base ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-primary: #1a56db;
  --c-primary-light: #e8eefb;
  --c-primary-dark: #1e40af;
  --c-accent: #f59e0b;
  --c-accent-light: #fef3c7;
  --c-success: #059669;
  --c-success-light: #d1fae5;
  --c-danger: #dc2626;
  --c-danger-light: #fee2e2;
  --c-bg: #f8fafc;
  --c-white: #ffffff;
  --c-border: #e2e8f0;
  --c-text: #1e293b;
  --c-text-secondary: #64748b;
  --c-text-light: #94a3b8;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --max-w: 1280px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--c-text); background: var(--c-bg); line-height: 1.6; }

a { color: var(--c-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--c-primary-dark); }

/* ====== Top Nav ====== */
.top-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 60px;
}
.logo { display: flex; align-items: center; gap: 8px; color: var(--c-text); font-weight: 700; font-size: 18px; }
.logo:hover { color: var(--c-text); }
.logo-icon { display: inline-flex; width: 32px; height: 32px; background: var(--c-primary); color: white; border-radius: 8px; align-items: center; justify-content: center; font-size: 14px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  padding: 8px 16px; border-radius: 8px; font-size: 14px; font-weight: 500;
  color: var(--c-text-secondary); transition: all 0.2s;
}
.nav-links a:hover { background: var(--c-primary-light); color: var(--c-primary); }
.nav-links a.active { background: var(--c-primary); color: white; }

/* ====== Hero ====== */
.hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 50%, #3b82f6 100%);
  color: white; padding: 64px 24px; text-align: center;
}
.hero.hero-compact { padding: 18px 24px; }
.hero h1 { font-size: 22px; font-weight: 800; margin-bottom: 4px; letter-spacing: -0.5px; }
.hero-sub { font-size: 13px; opacity: 0.85; max-width: 600px; margin: 0 auto; }

/* Page anchor nav */
.page-anchor-nav {
  display: flex; gap: 8px; padding: 10px 0; background: #fff;
  border-bottom: 1px solid var(--c-border); position: sticky; top: 56px; z-index: 90;
}
.anchor-link {
  padding: 4px 0; font-size: 14px; font-weight: 400; color: var(--c-text-secondary);
  text-decoration: none; white-space: nowrap; transition: all .2s;
  position: relative;
}
.anchor-link:hover { color: var(--c-primary); }
.anchor-link.active { color: var(--c-primary); font-weight: 600; }
.anchor-link.active::after {
  content: ''; position: absolute; bottom: -10px; left: 0; right: 0;
  height: 2px; background: var(--c-primary);
}

/* ====== Matrix Section (全展示网格) ====== */
.matrix-section {
  max-width: 1360px; margin: 0 auto; padding: 24px 24px;
}
.mx-head {
  display: grid; grid-template-columns: 120px repeat(5, 1fr); gap: 10px;
  margin-bottom: 8px;
}
.mx-stage {
  text-align: center; padding: 10px 8px; font-size: 13px; font-weight: 700;
  color: var(--c-text-secondary); background: var(--c-bg); border-radius: 8px;
  border: 1px solid var(--c-border);
}
.mx-row {
  display: grid; grid-template-columns: 120px repeat(5, 1fr); gap: 10px;
  margin-bottom: 10px;
}
.mx-row:last-child { margin-bottom: 0; }
.mx-label {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px; font-size: 14px; font-weight: 700;
  background: var(--c-white); border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.mx-label-methods { border-left: 3px solid var(--c-primary); }
.mx-label-materials { border-left: 3px solid var(--c-accent); }
.mx-label-tools { border-left: 3px solid var(--c-success); }
.mx-cell {
  background: var(--c-white); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 10px 12px;
  transition: box-shadow 0.2s;
}
.mx-cell:hover { box-shadow: var(--shadow-sm); }
.mx-cell a {
  display: block; padding: 5px 8px; border-radius: 5px; font-size: 12px;
  color: var(--c-text); transition: all 0.15s; line-height: 1.5;
}
.mx-cell a:hover { background: var(--c-primary-light); color: var(--c-primary); }
.m-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.m-dot.blue { background: var(--c-primary); }
.m-dot.amber { background: var(--c-accent); }
.m-dot.green { background: var(--c-success); }

/* ====== Quick Section (专项功能) ====== */
.quick-section {
  max-width: 1320px; margin: 0 auto; padding: 0 24px 24px;
}
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quick-card {
  display: flex; align-items: center; gap: 14px; padding: 18px 20px;
  background: var(--c-white); border-radius: var(--radius); border: 1px solid var(--c-border);
  transition: all 0.25s; cursor: pointer; color: var(--c-text);
}
.quick-card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow); border-color: transparent;
}
.quick-icon-wrap {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.danger-bg { background: var(--c-danger-light); }
.blue-bg { background: var(--c-primary-light); }
.amber-bg { background: var(--c-accent-light); }
.green-bg { background: var(--c-success-light); }
.quick-icon { font-size: 22px; }
.quick-info { flex: 1; min-width: 0; }
.quick-info h3 { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.quick-info p { font-size: 12px; color: var(--c-text-secondary); line-height: 1.4; }
.quick-arrow { font-size: 18px; color: var(--c-text-light); flex-shrink: 0; transition: transform 0.2s; }
.quick-card:hover .quick-arrow { transform: translateX(3px); color: var(--c-primary); }

/* ====== Learning Path (新人路径) ====== */
.path-section {
  max-width: 1320px; margin: 0 auto; padding: 24px 24px 40px;
}
.path-title { font-size: 20px; font-weight: 800; text-align: center; margin-bottom: 20px; }
.path-steps { display: flex; flex-direction: column; gap: 0; }
.path-step {
  display: flex; align-items: flex-start; gap: 16px; position: relative;
}
.path-step + .path-step { margin-top: 12px; }
.path-num {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: var(--c-primary); color: white; font-size: 15px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.path-body {
  flex: 1; background: var(--c-white); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 16px 20px;
}
.path-body h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.path-body p { font-size: 13px; color: var(--c-text-secondary); line-height: 1.5; }
.path-link {
  display: inline-block; margin-top: 8px; font-size: 12px; font-weight: 600;
  color: var(--c-primary);
}
.path-link:hover { text-decoration: underline; }

/* ====== Footer ====== */
.site-footer { background: var(--c-text); color: rgba(255,255,255,0.7); text-align: center; padding: 32px 24px; margin-top: 0; }
.site-footer p { font-size: 14px; }
.footer-sub { font-size: 12px; margin-top: 4px; color: rgba(255,255,255,0.4); }
.footer-legal { font-size: 12px; line-height: 1.8; color: rgba(255,255,255,0.35); margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); }

/* ====== Download List (Dynamic Content) ====== */
.download-list { display: flex; flex-direction: column; gap: 10px; }
.download-item {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 20px; background: white; border: 1px solid var(--c-border);
  border-radius: 10px; transition: box-shadow 0.2s;
}
.download-item:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.download-item-info { flex: 1; min-width: 0; }
.download-item-info strong { display: block; font-size: 15px; margin-bottom: 4px; }
.download-file-meta { font-size: 12px; color: var(--c-text-light); word-break: break-all; }

/* ====== Sub Page Layout ====== */
.page-container { max-width: var(--max-w); margin: 0 auto; padding: 40px 24px; }
.page-title-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 50%, #3b82f6 100%);
  color: white; padding: 48px 24px;
}
.page-title-section h1 { font-size: 32px; font-weight: 800; margin-bottom: 8px; }
.page-title-section p { font-size: 16px; opacity: 0.8; }

/* Content blocks */
.content-block { margin-bottom: 48px; scroll-margin-top: 80px; }
.content-block h2 {
  font-size: 22px; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 3px solid var(--c-primary); display: inline-block;
}
.content-block h3 { font-size: 18px; font-weight: 700; margin: 20px 0 10px; }
.content-block p, .content-block li { font-size: 15px; line-height: 1.8; color: var(--c-text-secondary); }
.content-block ul, .content-block ol { padding-left: 20px; margin: 10px 0; }
.content-block li { margin-bottom: 6px; }

/* Info boxes */
.info-box {
  background: var(--c-primary-light); border-left: 4px solid var(--c-primary);
  padding: 20px 24px; border-radius: 0 var(--radius) var(--radius) 0; margin: 16px 0;
}
.info-box.warning { background: var(--c-accent-light); border-color: var(--c-accent); }
.info-box.success { background: var(--c-success-light); border-color: var(--c-success); }
.info-box.danger { background: var(--c-danger-light); border-color: var(--c-danger); }
.info-box strong { color: var(--c-text); }

/* Tip box */
.tip-box {
  background: linear-gradient(135deg, #fef3c7, #fde68a); border-left: 4px solid var(--c-accent);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0; margin: 16px 0;
  font-size: 14px;
}
.tip-box::before { content: '💡 实战技巧：'; font-weight: 700; color: #92400e; }

/* Script template */
.script-template {
  background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 24px; margin: 16px 0;
}
.script-role { font-weight: 700; color: var(--c-primary); margin-bottom: 6px; font-size: 14px; }
.script-content { color: var(--c-text); padding: 12px 16px; background: var(--c-bg); border-radius: 8px; margin-bottom: 12px; font-size: 14px; line-height: 1.8; }

/* Table */
.data-table-wrap { overflow-x: auto; margin: 16px 0; border-radius: var(--radius); border: 1px solid var(--c-border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { background: var(--c-primary); color: white; padding: 12px 16px; text-align: left; font-weight: 600; white-space: nowrap; }
.data-table td { padding: 10px 16px; border-bottom: 1px solid var(--c-border); }
.data-table tr:hover td { background: var(--c-primary-light); }
.data-table tr:nth-child(even) td { background: #f8fafc; }
.data-table tr:nth-child(even):hover td { background: var(--c-primary-light); }

/* Payment ledger */
.ledger-form {
  background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 28px; margin-bottom: 32px;
}
.ledger-form h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--c-text-secondary); }
.form-group input, .form-group select, .form-group textarea {
  padding: 10px 14px; border: 1px solid var(--c-border); border-radius: 8px;
  font-size: 14px; font-family: var(--font); transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 24px; border-radius: 8px; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; transition: all 0.2s; font-family: var(--font);
}
.btn-primary { background: var(--c-primary); color: white; }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-success { background: var(--c-success); color: white; }
.btn-danger { background: var(--c-danger); color: white; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.form-actions { margin-top: 16px; display: flex; gap: 12px; }

.ledger-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px;
}
.stat-card {
  background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 20px; text-align: center;
}
.stat-card .stat-value { font-size: 28px; font-weight: 800; color: var(--c-primary); }
.stat-card .stat-label { font-size: 13px; color: var(--c-text-secondary); margin-top: 4px; }

/* Growth page */
.growth-timeline { position: relative; padding-left: 32px; margin: 24px 0; }
.growth-timeline::before { content: ''; position: absolute; left: 10px; top: 0; bottom: 0; width: 2px; background: var(--c-primary); }
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before {
  content: ''; position: absolute; left: -26px; top: 6px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--c-primary); border: 3px solid var(--c-primary-light);
}
.timeline-date { font-size: 13px; color: var(--c-text-light); font-weight: 600; margin-bottom: 6px; }
.timeline-title { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.timeline-content { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }

/* Breadcrumb */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.breadcrumb { font-size: 13px; color: var(--c-text-light); }
.breadcrumb a { color: var(--c-text-secondary); }
.breadcrumb a:hover { color: var(--c-primary); }
.page-header .search-box { margin-bottom: 0; }
.page-header .search-box input { width: 220px; padding: 6px 14px; font-size: 13px; border-radius: 6px; border: 1px solid var(--c-border); background: var(--c-bg); color: var(--c-text); outline: none; transition: border-color .2s; }
.page-header .search-box input:focus { border-color: var(--c-primary); }
.page-header .search-box input::placeholder { color: var(--c-text-light); }

/* Tabs */
.tab-nav { display: flex; gap: 4px; border-bottom: 2px solid var(--c-border); margin-bottom: 24px; }
.tab-btn {
  padding: 10px 20px; font-size: 14px; font-weight: 600; border: none; background: none;
  color: var(--c-text-secondary); cursor: pointer; border-bottom: 2px solid transparent;
  margin-bottom: -2px; transition: all 0.2s; font-family: var(--font);
}
.tab-btn:hover { color: var(--c-primary); }
.tab-btn.active { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Accordion */
.accordion-item { border: 1px solid var(--c-border); border-radius: var(--radius); margin-bottom: 8px; overflow: hidden; }
.accordion-trigger {
  width: 100%; padding: 16px 20px; background: var(--c-white); border: none;
  font-size: 15px; font-weight: 600; color: var(--c-text); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; font-family: var(--font);
  transition: background 0.2s;
}
.accordion-trigger:hover { background: var(--c-primary-light); }
.accordion-trigger::after { content: '+'; font-size: 20px; color: var(--c-text-light); transition: transform 0.2s; }
.accordion-item.open .accordion-trigger::after { content: '−'; }
.accordion-body { padding: 0 20px; max-height: 0; overflow: hidden; transition: all 0.3s; }
.accordion-item.open .accordion-body { padding: 16px 20px; max-height: 1000px; }

/* Search box */
.search-box {
  display: flex; gap: 8px; margin-bottom: 32px;
}
.search-box input {
  flex: 1; padding: 12px 20px; border: 2px solid var(--c-border); border-radius: var(--radius);
  font-size: 15px; font-family: var(--font); transition: border-color 0.2s;
}
.search-box input:focus { outline: none; border-color: var(--c-primary); }

/* Tag */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600;
}
.tag-blue { background: var(--c-primary-light); color: var(--c-primary); }
.tag-amber { background: var(--c-accent-light); color: #92400e; }
.tag-green { background: var(--c-success-light); color: var(--c-success); }

/* ====== Frontend Login Overlay ====== */
.login-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1e293b 100%);
  display: flex; align-items: center; justify-content: center;
  opacity: 1; transition: opacity 0.3s ease;
}
.login-overlay.hiding { opacity: 0; pointer-events: none; }
.login-card {
  background: white; border-radius: 20px; padding: 48px 40px 40px;
  width: 100%; max-width: 400px; margin: 20px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.3);
}
.login-card-logo {
  text-align: center; margin-bottom: 32px;
}
.login-card-logo .logo-icon {
  display: inline-flex; width: 48px; height: 48px;
  background: var(--c-primary); color: white; border-radius: 14px;
  align-items: center; justify-content: center; font-size: 20px;
  margin-bottom: 12px;
}
.login-card-logo h2 {
  font-size: 22px; font-weight: 800; color: var(--c-text); margin-bottom: 4px;
}
.login-card-logo p {
  font-size: 13px; color: var(--c-text-light);
}
.login-field { margin-bottom: 20px; }
.login-field label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--c-text-secondary); margin-bottom: 6px;
}
.login-field input {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--c-border);
  border-radius: 10px; font-size: 15px; font-family: var(--font);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--c-bg);
}
.login-field input:focus {
  outline: none; border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,0.12);
  background: white;
}
.login-submit {
  width: 100%; padding: 14px; border: none; border-radius: 10px;
  background: var(--c-primary); color: white; font-size: 15px;
  font-weight: 700; cursor: pointer; font-family: var(--font);
  transition: background 0.2s, transform 0.1s;
  margin-top: 4px;
}
.login-submit:hover { background: var(--c-primary-dark); }
.login-submit:active { transform: scale(0.98); }
.login-error {
  display: none; font-size: 13px; color: var(--c-danger);
  margin-bottom: 16px; padding: 10px 14px;
  background: var(--c-danger-light); border-radius: 8px;
}
.login-footer {
  text-align: center; margin-top: 24px; padding-top: 20px;
  border-top: 1px solid var(--c-border);
  font-size: 12px; color: var(--c-text-light); line-height: 1.6;
}

/* Body state classes */
body.not-logged-in #login-overlay { display: flex; }
body.logged-in #login-overlay { display: none; }
body.logged-in .page-content-area { filter: none; pointer-events: auto; }
body.not-logged-in .page-content-area { filter: blur(8px); pointer-events: none; user-select: none; }

/* Responsive: login overlay */
@media (max-width: 480px) {
  .login-card { padding: 36px 24px 28px; margin: 16px; }
  .login-card-logo h2 { font-size: 20px; }
}

/* ====== Responsive ====== */
@media (max-width: 1024px) {
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .mx-head, .mx-row { grid-template-columns: 100px repeat(5, 1fr); gap: 6px; }
  .mx-cell a { font-size: 11px; }
}
@media (max-width: 768px) {
  .mx-head, .mx-row { grid-template-columns: 80px repeat(5, 1fr); gap: 4px; }
  .mx-stage { font-size: 11px; padding: 6px 4px; }
  .mx-label { font-size: 12px; padding: 8px; }
  .mx-cell { padding: 6px 8px; }
  .mx-cell a { font-size: 11px; padding: 3px 4px; }
  .path-steps { flex-direction: column; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero.hero-compact { padding: 16px 20px; }
  .hero h1 { font-size: 18px; }
  .hero-sub { font-size: 12px; }
  .quick-grid { grid-template-columns: 1fr; }
  .ledger-stats { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .mx-head { display: none; }
  .mx-row { display: flex; flex-direction: column; gap: 6px; }
  .mx-label { border-radius: 8px; border-left: 3px solid var(--c-primary); }
  .mx-cell { padding: 8px 10px; }
  .mx-cell a { font-size: 12px; }
}