/* ========================================
   昭通泓阳装饰有限责任公司 - 网站样式
   ======================================== */

:root {
  --color-primary: #2d5a4a;
  --color-primary-dark: #1e3f33;
  --color-primary-light: #4a7c69;
  --color-accent: #c9a96e;
  --color-accent-dark: #b08d4f;
  --color-dark: #1a1a1a;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f5f1;
  --color-bg-warm: #faf8f4;
  --color-border: #e8e4dc;
  --color-border-light: #f0ece4;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
}

/* ---------- 顶部导航 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 1px;
}

.logo-mark {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-text);
  position: relative;
  padding: 6px 0;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 10px 22px !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta {
    width: 100%;
    text-align: center;
  }
}

/* ---------- Hero 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  background: #000;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_living.jpg');
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.15); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 63, 51, 0.85) 0%, rgba(26, 26, 26, 0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 720px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(201, 169, 110, 0.2);
  border: 1px solid rgba(201, 169, 110, 0.5);
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero h1 span {
  color: var(--color-accent);
}

.hero p {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.9;
  opacity: 0.9;
  margin-bottom: 40px;
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #1a1a1a;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(201, 169, 110, 0.4);
}

.btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 2;
}

.hero-stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 24px 0;
}

.stat-item {
  text-align: center;
  color: #fff;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 6px;
}

@media (max-width: 768px) {
  .hero-stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 20px 0;
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .stat-num {
    font-size: 1.8rem;
  }
}

/* ---------- 通用 section ---------- */
.section {
  padding: 100px 0;
}

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

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

.section-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-accent-dark);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: var(--color-dark);
  line-height: 1.3;
  margin-bottom: 18px;
  font-weight: 700;
}

.section-desc {
  color: var(--color-text-light);
  font-size: 1.05rem;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }
}

/* ---------- 服务亮点 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: #fff;
  padding: 40px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: #fff;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--color-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ---------- 案例展示 ---------- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.case-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.08);
}

.case-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(201, 169, 110, 0.95);
  color: #1a1a1a;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.case-info {
  padding: 24px;
}

.case-info h3 {
  font-size: 1.15rem;
  color: var(--color-dark);
  margin-bottom: 8px;
  font-weight: 700;
}

.case-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.case-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.case-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.case-price small {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

@media (max-width: 900px) {
  .cases-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ---------- 流程 ---------- */
.process-wrap {
  position: relative;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
  padding: 0 8px;
}

.process-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: #fff;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  position: relative;
  z-index: 2;
  transition: var(--transition);
}

.process-step:hover .process-num {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.1);
}

.process-step h4 {
  font-size: 1rem;
  color: var(--color-dark);
  margin-bottom: 8px;
  font-weight: 700;
}

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

@media (max-width: 900px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* ---------- 报价方案 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.price-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 40px 32px;
  border: 1px solid var(--color-border-light);
  position: relative;
  transition: var(--transition);
}

.price-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: scale(1.03);
}

.price-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #1a1a1a;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
}

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

.price-card.featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.price-name {
  font-size: 1.2rem;
  color: var(--color-dark);
  font-weight: 700;
  margin-bottom: 8px;
}

.price-sub {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.price-amount small {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.price-unit {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.price-list {
  margin-bottom: 28px;
}

.price-list li {
  padding: 10px 0;
  font-size: 0.92rem;
  color: var(--color-text);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-bottom: 1px dashed var(--color-border-light);
}

.price-list li:last-child {
  border-bottom: none;
}

.price-list li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.price-card .btn {
  width: 100%;
}

@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .price-card.featured {
    transform: none;
  }
  .price-card.featured:hover {
    transform: translateY(-4px);
  }
}

/* ---------- 口碑评价 ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: #fff;
  padding: 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
}

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

.testimonial-quote {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--color-accent);
  line-height: 0.8;
  margin-bottom: 12px;
}

.testimonial-text {
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.testimonial-info h5 {
  font-size: 0.95rem;
  color: var(--color-dark);
  font-weight: 700;
}

.testimonial-info p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ---------- CTA 行动号召 ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding: 80px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-primary {
  background: var(--color-accent);
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
}

.footer-social a:hover {
  background: var(--color-accent);
  color: #1a1a1a;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

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

.footer-contact li {
  font-size: 0.9rem;
  margin-bottom: 14px;
  display: flex;
  gap: 10px;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 500px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 页面头部 banner ---------- */
.page-banner {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--color-bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.page-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 16px;
}

.page-banner p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 16px;
}

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

/* ---------- 服务项目详情 ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.service-detail:nth-child(even) {
  direction: rtl;
}

.service-detail:nth-child(even) > * {
  direction: ltr;
}

.service-detail-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.service-detail-img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.service-detail-content h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.service-detail-content p {
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.9;
}

.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.service-list li {
  padding: 10px 14px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .service-detail {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .service-detail:nth-child(even) {
    direction: ltr;
  }
}

/* ---------- FAQ 折叠 ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-accent);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-dark);
  text-align: left;
  background: none;
}

.faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-toggle {
  background: var(--color-primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 28px 22px;
}

.faq-answer p {
  color: var(--color-text-light);
  line-height: 1.9;
  font-size: 0.95rem;
}

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.about-img img {
  width: 100%;
}

.about-content h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-dark);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.about-stat h3 {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-accent-dark);
  font-weight: 700;
}

.about-stat p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

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

.value-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.4rem;
}

.value-card h4 {
  font-size: 1rem;
  color: var(--color-dark);
  margin-bottom: 8px;
}

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

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info-card {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 40px;
  border-radius: var(--radius-md);
  color: #fff;
}

.contact-info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.contact-info-card > p {
  opacity: 0.85;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact-item h5 {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-bottom: 4px;
  font-weight: 400;
}

.contact-item p {
  font-size: 1rem;
  font-weight: 500;
}

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--color-bg-warm);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(45, 90, 74, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  width: 100%;
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .contact-info-card,
  .contact-form {
    padding: 28px;
  }
}

/* ---------- 案例筛选 ---------- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.9rem;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---------- 信任徽章 ---------- */
.trust-bar {
  background: var(--color-bg-warm);
  padding: 48px 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.trust-item {
  padding: 0 16px;
}

.trust-item h4 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 6px;
  font-weight: 700;
}

.trust-item p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

/* ---------- 浮动咨询按钮 ---------- */
.float-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.float-btn:hover {
  background: var(--color-primary-dark);
  transform: scale(1.08);
}

.float-btn.phone {
  background: var(--color-accent);
  color: #1a1a1a;
}

.float-btn.phone:hover {
  background: var(--color-accent-dark);
}

/* ---------- 动画 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 工具类 ---------- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.hidden-mobile { display: block; }
.show-mobile { display: none; }

@media (max-width: 768px) {
  .hidden-mobile { display: none; }
  .show-mobile { display: block; }
}