/* ===== 全局重置 & 变量 ===== */
:root {
  --red: #bc1e22;         /* 老北京红 */
  --red-dark: #8b1317;
  --gold: #d4a853;
  --gold-light: #f0d68a;
  --cream: #faf6ef;
  --brown: #5a3e2b;
  --dark: #2c1f16;
  --gray: #7a6b5e;
  --light-gray: #e9e0d5;
  --shadow: 0 8px 32px rgba(44, 31, 22, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background: var(--cream);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-sm);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
section {
  padding: 80px 0;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.5px;
}
.btn-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 4px 16px rgba(188, 30, 34, 0.35);
}
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(188, 30, 34, 0.45);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}
.btn-block {
  width: 100%;
  justify-content: center;
}

/* ===== 标题 ===== */
.section-title {
  text-align: center;
  margin-bottom: 56px;
}
.section-title h2 {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--dark);
  position: relative;
  display: inline-block;
}
.section-title h2::after {
  content: '';
  display: block;
  width: 60%;
  height: 4px;
  background: var(--gold);
  margin: 12px auto 0;
  border-radius: 4px;
}
.section-title p {
  color: var(--gray);
  margin-top: 12px;
  font-size: 1.1rem;
}

/* ===== 导航 ===== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background: transparent;
  transition: var(--transition);
  padding: 12px 0;
}
#navbar.scrolled {
  background: rgba(44, 31, 22, 0.92);
  backdrop-filter: blur(12px);
  padding: 6px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.6rem;
  font-weight: 900;
  color: #fff;
}
.logo i {
  color: var(--gold);
}
.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: var(--transition);
}
.nav-links a:hover {
  color: #fff;
}
.nav-links a:hover::after {
  width: 100%;
}
.hamburger {
  display: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
}

/* ===== Hero ===== */
#hero {
  min-height: 100vh;
  background: url('https://images.unsplash.com/photo-1555126634-323283e090fa?w=1600&h=1000&fit=crop') center/cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(44,31,22,0.85) 0%, rgba(44,31,22,0.4) 100%);
  display: flex;
  align-items: center;
}
.hero-content {
  color: #fff;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero-content h1 {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 2px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.hero-content p {
  font-size: 1.3rem;
  margin: 20px 0 36px;
  opacity: 0.9;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 56px;
}
.hero-stats div {
  text-align: center;
}
.hero-stats .num {
  display: block;
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--gold);
}
.hero-stats .label {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* ===== 老字号 ===== */
#about {
  background: #fff;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text p {
  font-size: 1.1rem;
  color: var(--brown);
  margin-bottom: 20px;
  line-height: 1.8;
}
.about-sign {
  margin-top: 24px;
  font-weight: 600;
  color: var(--red);
  font-style: italic;
}
.about-image {
  position: relative;
}
.about-badge {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: var(--gold);
  color: var(--dark);
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ===== 菜单 ===== */
#menu {
  background: var(--cream);
}
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.menu-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(44,31,22,0.06);
  transition: var(--transition);
  cursor: default;
}
.menu-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(44,31,22,0.12);
}
.menu-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.menu-card-body {
  padding: 20px 22px 24px;
}
.menu-card-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.menu-card-body .desc {
  color: var(--gray);
  font-size: 0.9rem;
  margin-bottom: 14px;
  min-height: 2.6em;
}
.menu-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.menu-card-footer .price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--red);
}
.menu-card-footer .price small {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--gray);
}
.menu-tag {
  background: var(--gold-light);
  color: var(--brown);
  padding: 2px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ===== 特色 ===== */
#features {
  background: #fff;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.feature-card {
  text-align: center;
  padding: 32px 16px;
  border-radius: var(--radius);
  background: var(--cream);
  transition: var(--transition);
}
.feature-card:hover {
  background: #fff;
  box-shadow: var(--shadow);
  transform: scale(1.02);
}
.feature-icon {
  width: 72px;
  height: 72px;
  background: var(--red);
  color: #fff;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin: 0 auto 20px;
  box-shadow: 0 6px 20px rgba(188,30,34,0.25);
}
.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* ===== 食客说 ===== */
#testimonials {
  background: var(--cream);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: 0 4px 16px rgba(44,31,22,0.05);
  transition: var(--transition);
  position: relative;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.testimonial-card .quote {
  color: var(--brown);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 20px;
  min-height: 4.2em;
}
.testimonial-card .author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-card .author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.testimonial-card .author .name {
  font-weight: 700;
  font-size: 0.95rem;
}
.testimonial-card .author .from {
  font-size: 0.8rem;
  color: var(--gray);
}
.stars {
  color: var(--gold);
  margin-top: 4px;
  font-size: 0.85rem;
}

/* ===== 订座 ===== */
#reserve {
  background: #fff;
}
.reserve-wrap {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}
.reserve-form {
  background: var(--cream);
  padding: 36px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--brown);
}
.form-group label i {
  color: var(--red);
  margin-right: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212,168,83,0.2);
}
.form-tip {
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 12px;
}
.reserve-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--cream);
  padding: 20px 18px;
  border-radius: var(--radius-sm);
}
.info-card i {
  font-size: 1.8rem;
  color: var(--red);
  width: 48px;
  text-align: center;
}
.info-card h4 {
  font-weight: 700;
  font-size: 1rem;
}
.info-card p {
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== 页脚 ===== */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding-top: 60px;
}
.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 40px;
}
.footer-brand .logo {
  font-size: 1.8rem;
  margin-bottom: 8px;
}
.footer-brand p {
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.social {
  display: flex;
  gap: 16px;
}
.social a {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: rgba(255,255,255,0.7);
  font-size: 1.2rem;
}
.social a:hover {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.footer-links h4 {
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 1rem;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--gold);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--dark);
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  z-index: 9999;
  transition: 0.4s ease;
  opacity: 0;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  pointer-events: auto;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .about-grid,
  .reserve-wrap {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .testimonial-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 60%;
    height: 100vh;
    background: rgba(44,31,22,0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    transition: 0.4s ease;
    backdrop-filter: blur(12px);
    z-index: 998;
  }
  .nav-links.open {
    right: 0;
  }
  .hamburger {
    display: block;
    z-index: 999;
  }
  .hero-content h1 {
    font-size: 2.6rem;
  }
  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }
  .hero-stats .num {
    font-size: 1.8rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
  .section-title h2 {
    font-size: 2rem;
  }
}
@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-content p {
    font-size: 1rem;
  }
  .menu-grid {
    grid-template-columns: 1fr;
  }
  .footer-links {
    grid-template-columns: 1fr;
  }
  .reserve-form {
    padding: 24px 18px;
  }
}