/* ============================================
   AI玩读 - Main Stylesheet
   Design System: 深蓝+暖金，留白为主
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --bg: #F9F9F9;
  --bg-card: #FFFFFF;
  --text: #1E2A3E;
  --text-secondary: #6B7280;
  --accent: #C87A2C;
  --accent-dark: #B8860B;
  --material: #1E3A8A;
  --spiritual: #B45309;
  --hero-bg-start: #0F1B33;
  --hero-bg-end: #1A2744;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --radius: 8px;
  --font-title: 'Noto Sans SC', 'Inter', sans-serif;
  --font-body: 'Noto Sans SC', 'Inter', system-ui, sans-serif;
  --container: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-dark);
}

/* ---- Container ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: box-shadow 0.3s;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  box-shadow: var(--shadow);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--text);
  font-family: var(--font-title);
  text-decoration: none;
}

.logo-text {
  background: linear-gradient(135deg, var(--material), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav-link:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  padding: 32px 24px;
  z-index: 999;
  overflow-y: auto;
  overscroll-behavior: contain;
  box-shadow: 0 -1px 0 var(--border) inset;
}

.mobile-nav.active {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 60px;
}

.mobile-nav ul {
  list-style: none;
  text-align: center;
  width: 100%;
}

.mobile-nav li {
  margin: 24px 0;
}

.mobile-nav a {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  display: block;
  padding: 8px 0;
  transition: color 0.2s;
}

.mobile-nav a:hover {
  color: var(--accent);
}

/* ---- Hero ---- */
.hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--hero-bg-start), var(--hero-bg-end));
  color: #fff;
  text-align: center;
  padding: 100px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(200,122,44,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: 3rem;
  font-weight: 900;
  font-family: var(--font-title);
  line-height: 1.3;
  max-width: 680px;
  margin: 0 auto 20px;
  position: relative;
  background: linear-gradient(135deg, #FFFFFF, #E8D5B7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 8px;
  position: relative;
}

.hero-motto {
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 36px;
  font-style: italic;
  position: relative;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.3s;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(200,122,44,0.4);
}

.btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: #fff;
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(200,122,44,0.1);
  color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ---- Sections ---- */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-title);
  color: var(--text);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Cards Grid ---- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- Comparison Table ---- */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card);
}

.comparison-table th {
  background: var(--hero-bg-start);
  color: #fff;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
}

.comparison-table th:first-child {
  text-align: left;
  background: var(--hero-bg-start);
  opacity: 0.9;
}

.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text);
  text-align: center;
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.col-material {
  background: rgba(30,58,138,0.04);
}

.col-spiritual {
  background: rgba(181,83,9,0.04);
}

/* ---- Two-Card Column ---- */
.two-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card-material {
  background: linear-gradient(135deg, rgba(30,58,138,0.08), rgba(30,58,138,0.02));
  border-color: rgba(30,58,138,0.2);
}

.card-spiritual {
  background: linear-gradient(135deg, rgba(181,83,9,0.08), rgba(181,83,9,0.02));
  border-color: rgba(181,83,9,0.2);
}

/* ---- Concept Cards ---- */
.concepts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.concept-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}

.concept-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.concept-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.concept-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- Article List ---- */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.article-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.article-card .article-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.article-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.article-card h3 a {
  color: var(--text);
}

.article-card h3 a:hover {
  color: var(--accent);
}

.article-card .article-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.article-card .article-tag {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(200,122,44,0.1);
  padding: 2px 10px;
  border-radius: 100px;
}

/* ---- Rating Library ---- */
.rating-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.rating-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}

.rating-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.rating-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.rating-card h3 a {
  color: var(--text);
}

.rating-card h3 a:hover {
  color: var(--accent);
}

.rating-score {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}

.rating-score-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ---- Radar Chart (CSS approximation) ---- */
.radar-container {
  width: 140px;
  height: 140px;
  margin: 0 auto 16px;
  position: relative;
}

.radar-bg {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    var(--material) 0deg 72deg,
    #E74C3C 72deg 144deg,
    var(--spiritual) 144deg 216deg,
    #27AE60 216deg 288deg,
    #8E44AD 288deg 360deg
  );
  opacity: 0.1;
}

.radar-label {
  position: absolute;
  font-size: 0.6rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Bar score display */
.score-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.score-bar-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.score-bar-label {
  width: 60px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  text-align: right;
  flex-shrink: 0;
}

.score-bar-track {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease;
}

.score-bar-value {
  width: 40px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  flex-shrink: 0;
}

.fill-material { background: var(--material); }
.fill-society  { background: #E74C3C; }
.fill-self     { background: var(--spiritual); }
.fill-nature   { background: #27AE60; }

/* ---- Reading Demo ---- */
.reading-demo {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.reading-demo .book-header {
  margin-bottom: 20px;
}

.reading-demo .book-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 4px;
}

.reading-demo .book-author {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.reading-demo .book-summary {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.8;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  margin-bottom: 24px;
}

.reading-demo .demo-label {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Workflow Steps ---- */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.step-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- Content Page ---- */
.content-page {
  margin-top: var(--header-height);
  padding: 64px 0 80px;
}

.page-title {
  font-size: 2.2rem;
  font-weight: 900;
  font-family: var(--font-title);
  color: var(--text);
  margin-bottom: 12px;
  text-align: center;
}

.page-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 48px;
}

.content-body {
  max-width: 780px;
  margin: 0 auto;
}

.content-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 48px 0 16px;
  color: var(--text);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
}

.content-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--material);
}

.content-body p {
  margin-bottom: 16px;
  line-height: 1.8;
  color: var(--text);
}

.content-body blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(200,122,44,0.06), rgba(200,122,44,0.02));
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.8;
}

.content-body ul, .content-body ol {
  margin: 16px 0 16px 24px;
  line-height: 1.8;
}

.content-body li {
  margin-bottom: 8px;
}

/* ---- Post Page ---- */
.post-page {
  margin-top: var(--header-height);
  padding: 64px 0 80px;
}

.post-header {
  text-align: center;
  margin-bottom: 40px;
}

.post-title {
  font-size: 2rem;
  font-weight: 900;
  font-family: var(--font-title);
  margin-bottom: 12px;
}

.post-meta {
  display: flex;
  justify-content: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.post-tag {
  display: inline-block;
  background: rgba(200,122,44,0.1);
  color: var(--accent);
  padding: 2px 12px;
  border-radius: 100px;
  font-size: 0.8rem;
}

.post-content {
  max-width: 740px;
  margin: 0 auto;
  font-size: 1.02rem;
  line-height: 1.9;
}

.post-content h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 40px 0 16px;
}

.post-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 28px 0 12px;
}

.post-content p {
  margin-bottom: 16px;
}

.post-content blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  background: var(--bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.post-footer {
  max-width: 740px;
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.post-footer .share-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* ---- About Page ---- */
.about-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.about-motto {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent);
  font-style: italic;
  margin: 32px 0;
  padding: 20px;
  background: linear-gradient(135deg, rgba(200,122,44,0.08), rgba(200,122,44,0.02));
  border-radius: var(--radius);
}

.about-contact {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 32px;
}

.about-contact h3 {
  margin-bottom: 12px;
  color: var(--text);
}

.about-contact p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

/* ---- Rating Detail Page ---- */
.rating-detail {
  max-width: 740px;
  margin: 0 auto;
}

.rating-detail .book-info {
  text-align: center;
  margin-bottom: 32px;
}

.rating-detail .book-title-large {
  font-size: 2rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 4px;
}

.rating-detail .book-author {
  font-size: 1rem;
  color: var(--text-secondary);
}

.rating-detail .total-score {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--accent);
  text-align: center;
  margin-bottom: 4px;
}

.rating-detail .total-label {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.rating-summary-box {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  margin-bottom: 28px;
}

.rating-summary-box h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.rating-summary-box p {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.8;
}

.rating-reason-box {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 24px;
}

.rating-reason-box h3 {
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.rating-reason-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- CTA Section ---- */
.cta-section {
  text-align: center;
  padding: 64px 24px;
  background: linear-gradient(135deg, rgba(30,58,138,0.05), rgba(200,122,44,0.05));
  border-radius: var(--radius);
  margin: 48px auto;
  max-width: var(--container);
}

.cta-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.cta-section p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ---- Highlight Box ---- */
.highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  margin: 32px 0;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--hero-bg-start);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 6px;
  font-size: 0.85rem;
}

.footer-col a {
  color: rgba(255,255,255,0.6);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-col span {
  color: rgba(255,255,255,0.5);
}

.footer-bottom {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

.footer-motto {
  margin-top: 4px;
  font-style: italic;
  color: rgba(200,122,44,0.5);
}

.footer-icp {
  margin-top: 8px;
}

.footer-icp a {
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-icp a:hover {
  color: rgba(255,255,255,0.6);
}

/* ---- Animations ---- */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-secondary);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

/* ---- Scoring Rules Cards ---- */
.scoring-rules-block {
  margin: 32px 0;
}

.scoring-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.scoring-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 14px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
}

.scoring-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  opacity: 0.8;
}

.scoring-card-xiu::before { background: #4A90D9; }
.scoring-card-qi::before  { background: #E8913A; }
.scoring-card-zhi::before { background: #7B4FBF; }
.scoring-card-ping::before{ background: #3CAD8E; }

.scoring-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.scoring-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(200,122,44,0.2), var(--shadow-md);
}

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.card-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.card-indicators {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-ind {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg);
  padding: 4px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

/* Card detail panel */
.scoring-card-detail {
  margin-top: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 24px;
  animation: cardSlideIn 0.25s ease;
}

@keyframes cardSlideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.detail-header {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--border);
}

.detail-header-xiu { color: #4A90D9; }
.detail-header-qi  { color: #E8913A; }
.detail-header-zhi { color: #7B4FBF; }
.detail-header-ping{ color: #3CAD8E; }

.detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.detail-item:last-child { margin-bottom: 0; }

.detail-bullet {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  margin-top: 1px;
}

.detail-bullet.d1 { background: #B8860B; }
.detail-bullet.d3 { background: var(--material); }
.detail-bullet.d5 { background: #C0392B; }

.detail-name {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.detail-desc {
  white-space: nowrap;
}

.rules-cta {
  text-align: center;
  margin: 24px 0 32px;
}

.rules-try-btn {
  display: inline-block;
  padding: 12px 36px;
  background: linear-gradient(135deg, var(--material), var(--accent-dark));
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  box-shadow: var(--shadow);
}

.rules-try-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  opacity: 0.95;
  color: #fff;
}

@media (max-width: 768px) {
  .scoring-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .scoring-card {
    padding: 14px 8px;
  }

  .card-icon { font-size: 1.3rem; }
  .card-title { font-size: 0.95rem; }
  .card-subtitle { font-size: 0.72rem; margin-bottom: 6px; }
  .card-ind { font-size: 0.72rem; padding: 3px 5px; }

  .scoring-card-detail {
    padding: 14px 14px;
  }

  .detail-item {
    font-size: 0.78rem;
    gap: 6px;
    flex-wrap: wrap;
  }

  .detail-desc {
    white-space: normal;
  }

  .rules-try-btn {
    padding: 10px 28px;
    font-size: 0.95rem;
  }
}

/* 窄屏手机 (≤480px): 单列卡片 */
@media (max-width: 480px) {
  .scoring-cards {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .scoring-card {
    padding: 16px;
  }

  .card-icon { font-size: 1.3rem; }
  .card-title { font-size: 1rem; }
  .card-subtitle { font-size: 0.75rem; margin-bottom: 8px; }

  .card-indicators {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  .card-ind {
    font-size: 0.75rem;
    padding: 4px 8px;
    white-space: normal;
  }

  .scoring-card-detail {
    padding: 12px 12px;
    margin-top: 12px;
  }

  .detail-header {
    font-size: 0.9rem;
    margin-bottom: 8px;
  }

  .detail-item {
    font-size: 0.78rem;
    gap: 6px;
    margin-bottom: 6px;
    flex-wrap: wrap;
  }

  .detail-name {
    white-space: normal;
  }

  .detail-desc {
    white-space: normal;
  }

  .detail-bullet {
    width: 20px;
    height: 20px;
    font-size: 0.65rem;
  }

  .rules-cta {
    margin: 20px 0 24px;
  }

  .rules-try-btn {
    display: block;
    width: 100%;
    padding: 14px 20px;
    font-size: 1rem;
    text-align: center;
  }
}

/* ---- Responsive ---- */
@media (max-width: 992px) {
  :root {
    --container: 100%;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .cards-grid,
  .concepts-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .two-cards {
    grid-template-columns: 1fr;
  }

  .workflow-steps {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-links {
    gap: 32px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .rating-grid {
    grid-template-columns: 1fr;
  }
}

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

  .hamburger {
    display: flex;
  }

  .content-page,
  .post-page {
    padding: 40px 0 64px;
  }

  .page-title {
    font-size: 1.6rem;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 10px 12px;
    font-size: 0.8rem;
  }
}

/* 窄屏手机补充 */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 8px 6px;
    font-size: 0.72rem;
  }

  .workflow-steps {
    gap: 12px;
  }

  .page-title {
    font-size: 1.4rem;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .section-desc {
    font-size: 0.88rem;
  }
}

/* ============================================
   思想原点引语
   ============================================ */

.origin-quote-section {
  padding: 40px 0;
}

.origin-quote {
  display: flex;
  align-items: stretch;
  background: linear-gradient(135deg, #f8f4ea 0%, #fdfcf5 100%);
  border: 0.5px solid #e0d5b8;
  border-radius: 10px;
  padding: 28px 32px;
  max-width: 780px;
  margin: 0 auto;
}

.origin-quote-line {
  width: 4px;
  min-height: 100%;
  background: linear-gradient(180deg, #C87A2C 0%, #e8c97a 100%);
  border-radius: 2px;
  margin-right: 24px;
  flex-shrink: 0;
}

.origin-quote-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.origin-quote-main {
  font-size: 1.2rem;
  font-weight: 700;
  color: #C87A2C;
  line-height: 1.7;
  margin: 0;
}

.origin-quote-text {
  font-size: 0.95rem;
  color: #4a4440;
  line-height: 1.75;
  margin: 0;
}

.origin-quote-sub {
  font-size: 0.9rem;
  font-weight: 600;
  color: #1E2A3E;
  line-height: 1.7;
  margin: 0;
  padding-top: 6px;
  border-top: 1px dashed #d5c9a8;
}

@media (max-width: 768px) {
  .origin-quote {
    padding: 20px 18px;
    flex-direction: column;
  }

  .origin-quote-line {
    width: 100%;
    height: 3px;
    min-height: unset;
    margin-right: 0;
    margin-bottom: 16px;
  }

  .origin-quote-main {
    font-size: 1.1rem;
  }

  .origin-quote-text {
    font-size: 0.88rem;
  }

  .origin-quote-sub {
    font-size: 0.85rem;
  }
}