/* ===== 变量与基础 ===== */
:root {
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-surface: #ffffff;
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-accent: #0ea5e9;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --font-sans: 'Outfit', 'Noto Sans SC', system-ui, sans-serif;
  --font-sc: 'Noto Sans SC', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(30, 64, 175, 0.08);
  --shadow-lg: 0 20px 50px rgba(30, 64, 175, 0.12);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.94) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.header.is-scrolled {
  box-shadow: 0 4px 24px rgba(30, 64, 175, 0.08);
  border-bottom-color: rgba(226, 232, 240, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  transition: color 0.2s ease, transform 0.2s ease;
}
.logo:hover {
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}
.logo-img {
  height: 42px;
  width: auto;
  display: block;
  border-radius: 8px;
  transition: transform 0.2s ease;
}
.logo:hover .logo-img {
  transform: scale(1.03);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}
.nav a:hover {
  color: var(--color-primary);
}
.nav a:hover::after {
  transform: scaleX(1);
}
.nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}
.nav a.active::after {
  transform: scaleX(1);
}
.nav-cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1rem !important;
  background: var(--color-primary);
  color: #fff !important;
  font-weight: 600;
  border-radius: var(--radius);
}
.nav-cta::after {
  display: none;
}
.nav-cta:hover {
  background: var(--color-primary-dark);
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.menu-toggle:hover {
  background: var(--color-surface);
  border-color: var(--color-primary-light);
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: background 0.2s ease;
}

/* Language switcher (top right) */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}
.lang-switcher a {
  color: var(--color-text-muted);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius);
  transition: color 0.2s ease, background 0.2s ease;
}
.lang-switcher a:hover {
  color: var(--color-primary);
  background: rgba(30, 64, 175, 0.06);
}
.lang-switcher a.is-lang-active {
  color: var(--color-primary);
  font-weight: 600;
}
.lang-switcher .lang-sep {
  color: var(--color-border);
  user-select: none;
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.5rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav a::after {
    display: none;
  }
  .nav-cta {
    margin-left: 0;
    margin-top: 0.5rem;
    text-align: center;
    justify-content: center;
  }
  .menu-toggle {
    display: flex;
  }
  /* 小屏 Hero：加强遮罩，保证任意背景图下文字都可读 */
  .hero-bg::after {
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.92) 0%, rgba(248, 250, 252, 0.88) 30%, rgba(239, 246, 255, 0.75) 100%);
  }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #eff6ff 0%, #dbeafe 40%, #e0f2fe 100%);
  background-image: url('../images/hero.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
}
/* 遮罩：左侧保证文字可读，带一点品牌蓝 tint，右侧保留背景氛围 */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(248, 250, 252, 0.88) 0%, rgba(239, 246, 255, 0.5) 40%, rgba(219, 234, 254, 0.15) 65%, transparent 75%);
  pointer-events: none;
}

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

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
  max-width: 14em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: var(--color-text-muted);
  margin: 0 0 2.25rem;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ===== 内页标题区 ===== */
.page-hero {
  padding: 6rem 0 3rem;
  background: linear-gradient(180deg, #eff6ff 0%, var(--color-bg) 100%);
  text-align: center;
}
.page-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.page-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin: 0 auto;
  max-width: 560px;
}

/* ===== 首页产品预览 ===== */
.section-products-preview {
  background: var(--color-surface);
}
.product-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.product-preview-card {
  display: block;
  background: var(--color-bg);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), box-shadow var(--transition);
  color: inherit;
}
.product-preview-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow);
  color: inherit;
}
.product-preview-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.5rem;
}
.product-preview-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  color: var(--color-text);
}
.product-preview-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}
.section-cta-wrap {
  text-align: center;
  margin: 0;
}

/* ===== 通用区块 ===== */
.section {
  padding: 4rem 0;
}
.section:nth-child(even) {
  background: var(--color-surface);
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 1rem;
  text-align: center;
  letter-spacing: -0.02em;
}

.section-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0 0 2rem;
}

/* ===== 我们解决什么问题 ===== */
.section-problems {
  background: var(--color-bg-alt);
}

.problem-list {
  max-width: 520px;
  margin: 0 auto 1.5rem;
  padding-left: 1.25rem;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 2;
}
.problem-list li {
  margin-bottom: 0.25rem;
}

.problem-cta {
  text-align: center;
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--color-primary);
  margin: 0;
}

/* ===== 核心产品 ===== */
.section-products .section-title {
  margin-bottom: 2.5rem;
}

.product {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  position: relative;
}

.product-featured {
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 32px rgba(30, 64, 175, 0.12);
}

.product-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: #22c55e;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
}

.product-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.25rem;
}

.product-tagline {
  font-size: 0.95rem;
  color: var(--color-primary);
  font-weight: 600;
  margin: 0 0 1rem;
}

.product-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}
.product-benefits li {
  padding: 0.35rem 0 0.35rem 1.5rem;
  position: relative;
}
.product-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #22c55e;
  font-weight: 700;
}

.product-desc,
.product-cta,
.product-applies {
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}
.product-cta {
  font-weight: 600;
  color: var(--color-primary);
}
.product-cta-wrap {
  margin: 1rem 0 0;
}

.product h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 1rem 0 0.5rem;
}
.product h4:first-of-type {
  margin-top: 0;
}

.product-pricing {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.price-note {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
}
.price-main {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0.25rem 0;
}
.price-includes {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0.5rem 0 0;
}

/* 产品色块标识 */
.product-kiosk .product-tagline { color: #16a34a; }
.product-ai .product-tagline { color: #7c3aed; }
.product-website .product-tagline { color: #2563eb; }
.product-pos .product-tagline { color: #ca8a04; }

/* ===== 一体化架构 ===== */
.section-architecture {
  background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
}

.architecture-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto 1.5rem;
}

.flow-step {
  background: var(--color-surface);
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
}
.flow-highlight {
  background: var(--color-primary);
  color: #fff;
}
.flow-arrow {
  color: var(--color-text-muted);
  font-size: 1.25rem;
}

.architecture-cta {
  text-align: center;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

/* ===== 为什么选择 Lark ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.why-card {
  background: var(--color-surface);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}
.why-card ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}
.why-icon {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.5rem;
}

.why-footer {
  text-align: center;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

/* ===== Kiosk 产品实拍 ===== */
.section-kiosk-gallery {
  background: var(--color-bg-alt);
}

.kiosk-gallery-subtitle {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 2.5rem 0 1rem;
  text-align: center;
}
.kiosk-gallery-subtitle:first-of-type {
  margin-top: 0;
}

.kiosk-gallery-specs {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0 0 1rem;
  text-align: center;
}

.kiosk-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
}

.kiosk-gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--color-surface);
  aspect-ratio: 3 / 4;
}

.kiosk-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 横版图片：厨房终端 */
.kiosk-gallery-landscape {
  aspect-ratio: 16 / 9;
  grid-column: 1 / -1;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.kiosk-gallery-kitchen {
  max-width: 700px;
  margin: 0 auto;
}

.kiosk-gallery-featured {
  grid-column: 1 / -1;
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
}

@media (min-width: 640px) {
  .kiosk-gallery:not(.kiosk-gallery-kitchen) {
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 1.5rem;
    max-width: 100%;
  }
  .kiosk-gallery-featured {
    grid-column: 1;
    grid-row: 1 / 3;
    margin: 0;
    max-width: none;
  }
  .kiosk-gallery-item:not(.kiosk-gallery-featured):not(.kiosk-gallery-landscape) {
    aspect-ratio: 3 / 4;
  }
}

@media (min-width: 900px) {
  .kiosk-gallery:not(.kiosk-gallery-kitchen) {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 1.5rem;
  }
}

/* ===== Kiosk 内页文案区块 ===== */
.kiosk-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem auto;
  max-width: 120px;
}

.page-hero .kiosk-divider {
  margin-top: 1.5rem;
}

.kiosk-pain-list {
  margin-bottom: 1.5rem;
}

.kiosk-solution {
  text-align: center;
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 0;
}

.why-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.kiosk-feature-list {
  max-width: 640px;
  margin: 0 auto;
}

.kiosk-feature {
  background: var(--color-surface);
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.kiosk-feature h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.kiosk-feature-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.9rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.kiosk-feature-icon {
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.kiosk-feature ul {
  margin: 0 0 0.5rem;
  padding-left: 1.25rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

.kiosk-feature p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.kiosk-feature-note {
  margin-top: 0.75rem !important;
  font-size: 0.9rem !important;
  color: var(--color-primary) !important;
}

.kiosk-bullet-list {
  max-width: 480px;
  margin: 0 auto 1rem;
  padding-left: 1.25rem;
  line-height: 2;
  color: var(--color-text);
}

.kiosk-bullet-list li {
  margin-bottom: 0.25rem;
}

.kiosk-scenario-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.kiosk-scenario-tags li {
  background: var(--color-surface);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

/* 适用场景标签在卡片内 */
.kiosk-feature ul.kiosk-scenario-tags-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-left: 0;
  margin-bottom: 0;
}

.kiosk-feature ul.kiosk-scenario-tags-inline li {
  margin-bottom: 0;
}

.kiosk-feature ul.kiosk-results-list {
  font-weight: 500;
  color: var(--color-text);
}

.kiosk-results-list {
  font-weight: 500;
  color: var(--color-text);
}

.kiosk-roi-intro {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.kiosk-quote-block {
  max-width: 480px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid #16a34a;
}

.kiosk-quote-block p {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.6;
}

.kiosk-quote-block p:last-child {
  margin-bottom: 0;
}

/* ===== 成功案例（故事型案例页） ===== */
.case-study-hero {
  padding: 5rem 0 3rem;
  background: linear-gradient(180deg, #eff6ff 0%, var(--color-bg) 100%);
  text-align: center;
}
.case-study-hero .case-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.case-study-hero .case-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.case-study-hero .case-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin: 0 auto;
  max-width: 520px;
  line-height: 1.7;
}

.case-study-section {
  padding: 3rem 0;
  max-width: 720px;
  margin: 0 auto;
}
.case-study-section:nth-child(even) {
  background: var(--color-surface);
}
.case-study-section .section-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}
.case-study-section p {
  color: var(--color-text-muted);
  margin: 0 0 1rem;
  line-height: 1.8;
}
.case-study-section ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  line-height: 1.9;
  color: var(--color-text);
}
.case-study-section ul.case-list-tight li {
  margin-bottom: 0.35rem;
}

.case-solution-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.case-solution-item {
  background: var(--color-surface);
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  text-align: left;
}
.case-solution-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.case-solution-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}
.case-solution-item p,
.case-solution-item ul {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}
.case-solution-item ul {
  padding-left: 1.15rem;
  margin-top: 0.5rem;
}
.case-website-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.5rem;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
}
.case-website-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.case-results-box {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  padding: 1.75rem 2rem;
  border-radius: var(--radius-lg);
  border-left: 4px solid #16a34a;
  margin: 1.5rem 0;
}
.case-results-box ul {
  margin: 0;
  padding-left: 1.25rem;
  line-height: 2;
  color: var(--color-text);
  font-weight: 500;
}
.case-results-box .case-results-note {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.case-before-now {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
@media (max-width: 600px) {
  .case-before-now {
    grid-template-columns: 1fr;
  }
}
.case-before-now .box {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
.case-before-now .box.before {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}
.case-before-now .box.now {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 80%);
  border-color: var(--color-primary-light);
}
.case-before-now .box h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}
.case-before-now .box p,
.case-before-now .box ul {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
}
.case-before-now .box ul {
  padding-left: 1.15rem;
}

.case-conclusion-block {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary-light);
  text-align: center;
  margin-top: 1.5rem;
}
.case-conclusion-block p {
  margin: 0 0 1rem;
  color: var(--color-text);
  font-size: 1.05rem;
  line-height: 1.8;
}
.case-conclusion-block .case-stack {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  margin: 1rem 0 0;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1rem;
}

.case-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem auto;
  max-width: 80px;
}

/* 保留旧版简单卡片样式（兼容） */
.case-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-primary);
}
.case-card h2,
.case-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-text);
}
.case-card ul {
  margin: 0;
  padding-left: 1.25rem;
  line-height: 2;
  color: var(--color-text-muted);
}

/* ===== 价格模式 ===== */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 2px solid var(--color-border);
}
.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-primary);
}
.pricing-card ul {
  margin: 0;
  padding-left: 1.25rem;
  line-height: 2;
  color: var(--color-text);
}
.pricing-card-cta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 1rem 0 1.25rem;
}
.pricing-card .btn {
  width: 100%;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 600px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.faq-item summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color-primary);
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item p {
  margin: 0;
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  margin-top: 0;
  margin-left: 0;
  margin-right: 0;
}

/* ===== 最终 CTA ===== */
.section-cta {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 4rem 0;
}

.cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin: 0 0 2rem;
  color: #fff;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.section-cta .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.section-cta .btn-primary:hover {
  background: #f1f5f9;
  color: var(--color-primary-dark);
  border-color: #f1f5f9;
}
.section-cta .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.8);
}
.section-cta .btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: #fff;
}
.section-cta-inline {
  padding: 3rem 0;
}

/* ===== 联系我们页 ===== */
.section-contact .section-title {
  margin-bottom: 2rem;
}
.contact-cta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}
.contact-card {
  display: block;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
  color: inherit;
}
.contact-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  color: inherit;
}
.contact-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}
.contact-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}
.contact-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-text);
  color: #94a3b8;
  padding: 2.5rem 0;
  text-align: center;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  margin: 0 0 0.25rem;
}

.footer-tagline {
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.footer-nav a {
  color: #94a3b8;
}
.footer-nav a:hover {
  color: #fff;
}

.footer-copy {
  font-size: 0.85rem;
  margin: 0;
}