/* 莘昕书堂 - 展示网站样式 */

:root {
  --color-primary: #c8764a;
  --color-primary-dark: #a85f38;
  --color-primary-light: #f4e8df;
  --color-secondary: #4a7c8c;
  --color-secondary-light: #e8f2f5;
  --color-bg: #fbf9f6;
  --color-bg-alt: #f3efe9;
  --color-surface: #ffffff;
  --color-text: #2a2a2a;
  --color-text-muted: #666666;
  --color-border: #e8e2da;
  --shadow-sm: 0 2px 8px rgba(42, 42, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(42, 42, 42, 0.08);
  --shadow-lg: 0 16px 48px rgba(42, 42, 42, 0.1);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --header-height: 72px;
  --container: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

img {
  max-width: 100%;
  display: block;
}

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

a:hover {
  color: var(--color-primary);
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-light);
}

.btn-block {
  width: 100%;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(251, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 18px;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: 10px;
  font-size: 20px;
}

.site-nav {
  display: flex;
  gap: 32px;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 15px;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--color-primary);
}

.header-cta {
  padding: 10px 22px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s;
}

/* Hero */
.hero {
  padding: calc(var(--header-height) + 64px) 0 80px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(200, 118, 74, 0.12), transparent),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(74, 124, 140, 0.08), transparent),
    var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.25;
  margin: 0 0 20px;
  font-weight: 700;
}

.hero h1 .highlight {
  color: var(--color-primary);
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-muted);
  margin: 0 0 32px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-stats li {
  display: flex;
  flex-direction: column;
}

.hero-stats strong {
  font-size: 20px;
  color: var(--color-primary);
}

.hero-stats span {
  font-size: 13px;
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
  min-height: 380px;
}

.hero-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px;
}

.hero-card-main {
  position: relative;
  z-index: 1;
}

.hero-card-main .card-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.hero-card-main h3 {
  margin: 0 0 20px;
  font-size: 18px;
}

.hero-card-main ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-card-main li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}

.hero-card-main li:last-child {
  border-bottom: none;
}

.hero-card-main li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  padding: 4px 8px;
  background: var(--color-secondary-light);
  color: var(--color-secondary);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
}

.hero-card-float {
  position: absolute;
  bottom: 24px;
  left: -24px;
  padding: 14px 24px;
  background: var(--color-secondary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 2;
}

/* Sections */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(26px, 4vw, 36px);
  margin: 0 0 16px;
  line-height: 1.3;
}

.section-desc {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 16px;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.about-card {
  background: var(--color-surface);
  padding: 32px 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.about-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.about-card h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.about-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

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

.service-card {
  background: var(--color-surface);
  padding: 32px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color 0.2s;
}

.service-card:hover {
  border-color: var(--color-primary);
}

.service-num {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-card h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.service-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* Timeline */
.timeline {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 72px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
  position: relative;
}

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

.timeline-item time {
  flex-shrink: 0;
  width: 72px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: right;
  padding-top: 4px;
}

.timeline-body {
  flex: 1;
  background: var(--color-surface);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  position: relative;
}

.timeline-body::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 20px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline-body h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.timeline-body p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

.schedule-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  margin-top: 40px;
}

/* Advantages */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.advantage-item {
  text-align: center;
  padding: 28px 20px;
}

.advantage-item h3 {
  margin: 0 0 12px;
  font-size: 17px;
  color: var(--color-primary-dark);
}

.advantage-item p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.quote-block {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: 40px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.quote-block blockquote {
  margin: 0 0 16px;
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text);
}

.quote-block cite {
  font-style: normal;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 200px);
  gap: 16px;
}

.gallery-item-lg {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-placeholder {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  background: linear-gradient(
    145deg,
    hsl(var(--hue, 30) 45% 92%),
    hsl(var(--hue, 30) 35% 85%)
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: hsl(var(--hue, 30) 30% 35%);
  font-weight: 600;
  font-size: 18px;
}

.gallery-placeholder small {
  font-size: 13px;
  font-weight: 400;
  opacity: 0.8;
}

.gallery-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  margin-top: 24px;
}

/* Contact */
.section-cta {
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(200, 118, 74, 0.1), transparent),
    var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
}

.contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-label {
  min-width: 80px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.contact-list small {
  width: 100%;
  font-size: 12px;
  color: var(--color-text-muted);
  opacity: 0.8;
}

.contact-form {
  background: var(--color-surface);
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.contact-form h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.form-hint {
  margin: 0 0 24px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.contact-form label {
  display: block;
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 15px;
  background: var(--color-bg);
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-success {
  margin-top: 16px;
  padding: 12px;
  background: var(--color-secondary-light);
  color: var(--color-secondary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  text-align: center;
}

/* Footer */
.site-footer {
  background: #2a2a2a;
  color: #ccc;
  padding: 48px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.footer-brand .logo-mark {
  width: 36px;
  height: 36px;
  font-size: 18px;
}

.footer-brand strong {
  display: block;
  color: #fff;
  font-size: 16px;
}

.footer-brand p {
  margin: 4px 0 0;
  font-size: 13px;
  color: #999;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: #ccc;
  font-size: 14px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-meta {
  text-align: right;
}

.footer-meta p {
  margin: 0 0 8px;
  font-size: 13px;
}

.footer-meta a {
  color: #999;
}

.footer-meta a:hover {
  color: #fff;
}

.footer-note {
  font-size: 12px !important;
  opacity: 0.6;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-card-float {
    left: auto;
    right: 16px;
    bottom: -16px;
  }

  .about-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .gallery-item-lg {
    grid-column: span 2;
    grid-row: span 1;
    min-height: 200px;
  }

  .gallery-item {
    min-height: 160px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
  }

  .footer-links {
    justify-content: center;
  }

  .footer-meta {
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav,
  .header-cta {
    display: none;
  }

  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .header-cta.mobile-visible {
    display: inline-flex;
    position: absolute;
    top: calc(var(--header-height) + 200px);
    left: 24px;
    right: 24px;
  }

  .hero-stats {
    gap: 24px;
  }

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

  .timeline::before {
    left: 8px;
  }

  .timeline-item {
    flex-direction: column;
    gap: 8px;
    padding-left: 32px;
  }

  .timeline-item time {
    text-align: left;
    width: auto;
  }

  .timeline-body::before {
    left: -28px;
  }

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

  .gallery-item-lg {
    grid-column: span 1;
  }

  .contact-form {
    padding: 24px;
  }
}