/* ============================================
   MOCCI 美橙数字科技 - 主样式表
   品牌色: #FF6B35 (美橙) · 18年数字营销服务商
   ============================================ */

/* CSS 变量 */
:root {
  /* 品牌色系 */
  --color-primary: #FF6B35;
  --color-primary-dark: #E54A1B;
  --color-primary-light: #FF8C5F;
  --color-primary-soft: #FFF1EA;
  --color-accent: #FFB627;
  --color-secondary: #1A1A2E;
  --color-ink: #0F0F1A;
  --color-text: #2D2D3A;
  --color-text-muted: #6B6B7B;
  --color-text-light: #9B9BA8;
  --color-border: #E8E8EE;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAFAFB;
  --color-bg-dark: #0F0F1A;
  --color-success: #16A34A;
  --color-success-soft: #DCFCE7;

  /* 字体 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* 圆角 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-full: 999px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(15, 15, 26, 0.06), 0 1px 2px rgba(15, 15, 26, 0.04);
  --shadow-md: 0 6px 20px rgba(15, 15, 26, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 15, 26, 0.12);
  --shadow-primary: 0 12px 32px rgba(255, 107, 53, 0.25);

  /* 容器 */
  --container: 80vw;
  --container-min: 1440px;
  --pad-x: clamp(20px, 3vw, 40px);

  /* 过渡 */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 字号 */
  --fs-base: 16px;
  --fs-sm: 14px;
  --fs-xs: 13px;
  --fs-lg: 18px;
  --fs-xl: 22px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

ul {
  list-style: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

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

/* 通用容器 */
.container {
  width: var(--container);
  min-width: var(--container-min);
  max-width: 100%;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* 小屏适配：窗口宽度小于1440px时取消最小宽度限制 */
@media (max-width: 1440px) {
  .container {
    min-width: 0;
    width: 100%;
  }
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--r-full);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  letter-spacing: 0.01em;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(255, 107, 53, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-ink);
  border: 1.5px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-ink);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-block {
  width: 100%;
}

.btn-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s var(--ease);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-img {
  height: 44px;
  width: auto;
  border-radius: 6px;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--r-sm);
  transition: all 0.2s var(--ease);
  position: relative;
}

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

.nav-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff !important;
  padding: 10px 20px;
  margin-left: 8px;
  box-shadow: var(--shadow-primary);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}

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

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   Hero 区
   ============================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  padding: 120px 0 80px;
  overflow: hidden;
  background: linear-gradient(180deg, #FFF8F4 0%, #FFFFFF 60%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 107, 53, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 53, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  animation: float 12s ease-in-out infinite;
}

.hero-blob-1 {
  top: -10%;
  right: -10%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, #FFB627, transparent);
}

.hero-blob-2 {
  bottom: 10%;
  left: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, #FF6B35, transparent);
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.08); }
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  color: var(--color-primary-dark);
  font-weight: 500;
  margin-bottom: 28px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(255, 107, 53, 0); }
}

.hero-title {
  font-size: clamp(40px, 7vw, 80px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.title-accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 80px;
}

.hero-actions .btn svg {
  width: 18px;
  height: 18px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
}

.stat-card {
  padding: 24px 16px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  text-align: center;
  transition: all 0.3s var(--ease);
}

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

.stat-num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 6px;
  font-feature-settings: "tnum";
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-text-light);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 30px;
  background: linear-gradient(180deg, var(--color-primary), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--color-primary);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -50%; }
  100% { top: 100%; }
}

/* ============================================
   信任标识条
   ============================================ */
.trust-bar {
  padding: 60px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 32px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--color-text);
}

.trust-item svg {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.trust-item span {
  font-size: 13px;
  line-height: 1.4;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ============================================
   通用区块
   ============================================ */
.section {
  padding: clamp(60px, 9vw, 120px) 0;
  position: relative;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4.5vw, 48px);
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-lead {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================
   About
   ============================================ */
.about {
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.about-card {
  padding: 32px 28px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 53, 0.3);
}

.about-card-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  border-color: transparent;
}

.about-card-primary h3,
.about-card-primary .about-icon {
  color: #fff;
}

.about-card-primary p {
  color: rgba(255, 255, 255, 0.9);
}

.about-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 107, 53, 0.1);
  border-radius: var(--r-md);
  color: var(--color-primary);
  margin-bottom: 20px;
}

.about-card-primary .about-icon {
  background: rgba(255, 255, 255, 0.15);
}

.about-icon svg {
  width: 24px;
  height: 24px;
}

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

.about-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.about-quote {
  position: relative;
  padding: 48px clamp(28px, 5vw, 60px);
  background: var(--color-bg-alt);
  border-radius: var(--r-xl);
  text-align: center;
  border: 1px solid var(--color-border);
}

.quote-mark {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
  opacity: 0.3;
  margin: 0 auto 20px;
}

.about-quote p {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.7;
  color: var(--color-text);
  max-width: 720px;
  margin: 0 auto;
  font-weight: 500;
}

/* 关于我们 - 核心数据条 */
.about-stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 48px);
  padding: 36px 40px;
  background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-secondary) 100%);
  border-radius: var(--r-xl);
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.about-stat {
  text-align: center;
  color: #fff;
}

.about-stat strong {
  display: block;
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
}

.about-stat strong span {
  font-size: 0.55em;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
}

.about-stat span {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 6px;
  font-weight: 500;
}

.about-stat-divider {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
}

/* 关于我们 - 卡片列表 */
.about-card-list {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.about-card-list li {
  font-size: 13px;
  color: var(--color-text-muted);
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}

.about-card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.6;
}

.about-card-primary .about-card-list {
  border-top-color: rgba(255, 255, 255, 0.15);
}

.about-card-primary .about-card-list li {
  color: rgba(255, 255, 255, 0.85);
}

.about-card-primary .about-card-list li::before {
  background: var(--color-accent);
  opacity: 1;
}

/* 关于我们 - 发展历程时间轴 */
.about-timeline {
  margin-bottom: 60px;
}

.timeline-title {
  text-align: center;
  font-size: clamp(20px, 2.5vw, 28px);
  margin-bottom: 40px;
}

.timeline-track {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  position: relative;
  padding: 0 20px;
}

.timeline-track::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 40px;
  right: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
  opacity: 0.2;
  border-radius: 2px;
}

.timeline-item {
  flex: 1;
  text-align: center;
  position: relative;
  max-width: 200px;
}

.timeline-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-primary);
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
  transition: all 0.3s var(--ease);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.3);
  background: var(--color-primary);
  box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.15);
}

.timeline-year {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.timeline-text {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: 0 8px;
}

/* ============================================
   Services
   ============================================ */
.services {
  background: var(--color-bg-alt);
}

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

.service-card {
  position: relative;
  padding: 36px 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  transition: all 0.4s var(--ease);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 107, 53, 0.2);
}

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

.service-num {
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 48px;
  font-weight: 800;
  color: var(--color-primary-soft);
  line-height: 1;
  letter-spacing: -0.04em;
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-soft), #FFF8F4);
  color: var(--color-primary);
  border-radius: var(--r-md);
  margin-bottom: 24px;
}

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

.service-card h3 {
  font-size: 22px;
  margin-bottom: 14px;
  position: relative;
}

.service-card > p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tags li {
  padding: 4px 12px;
  background: var(--color-bg-alt);
  border-radius: var(--r-full);
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ============================================
   GEO
   ============================================ */
.geo {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.geo::before {
  content: '';
  position: absolute;
  top: 20%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.06), transparent);
  border-radius: 50%;
  pointer-events: none;
}

.geo-highlight {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  margin-bottom: 80px;
  position: relative;
  z-index: 1;
}

.highlight-card {
  padding: 40px 36px;
  border-radius: var(--r-xl);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.highlight-main {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-primary-soft) 100%);
  border-color: rgba(255, 107, 53, 0.2);
}

.highlight-price {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-ink) 100%);
  color: #fff;
  border-color: transparent;
  text-align: center;
}

.highlight-label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.highlight-price .highlight-label {
  background: var(--color-accent);
  color: var(--color-ink);
}

.highlight-card h3 {
  font-size: clamp(22px, 3vw, 32px);
  margin-bottom: 16px;
  line-height: 1.3;
}

.highlight-main p {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.7;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin: 8px 0 16px;
  color: #fff;
}

.price-currency {
  font-size: 24px;
  font-weight: 600;
}

.price-num {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}

.price-unit {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.6);
}

.price-note {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  margin-bottom: 24px;
}

.highlight-price .btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-ink);
}

.geo-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 80px;
}

.feature-card {
  padding: 28px 24px;
  background: var(--color-bg-alt);
  border-radius: var(--r-md);
  border: 1px solid var(--color-border);
  transition: all 0.3s var(--ease);
}

.feature-card:hover {
  background: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--r-sm);
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.geo-platforms {
  padding: 48px 36px;
  background: var(--color-bg-alt);
  border-radius: var(--r-xl);
  margin-bottom: 60px;
}

.platforms-title {
  text-align: center;
  font-size: clamp(20px, 2.5vw, 28px);
  margin-bottom: 32px;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.platform-item {
  padding: 24px 16px;
  background: var(--color-bg);
  border-radius: var(--r-md);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all 0.3s var(--ease);
}

.platform-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.platform-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.platform-vendor {
  font-size: 12px;
  color: var(--color-text-muted);
}

.platform-more {
  background: linear-gradient(135deg, var(--color-primary-soft), #FFF8F4);
  border-color: rgba(255, 107, 53, 0.2);
}

.platform-more .platform-logo {
  color: var(--color-primary);
}

.geo-guarantee {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 36px;
  background: var(--color-ink);
  border-radius: var(--r-xl);
  color: #fff;
}

.guarantee-item {
  text-align: center;
  padding: 0 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.guarantee-item:last-child {
  border-right: 0;
}

.guarantee-num {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
  font-feature-settings: "tnum";
}

.guarantee-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Packages
   ============================================ */
.packages {
  background: var(--color-bg-alt);
}

.package-toggle {
  display: none;
  margin-bottom: 32px;
  background: var(--color-bg);
  border-radius: var(--r-full);
  padding: 6px;
  border: 1px solid var(--color-border);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.toggle-btn {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--r-full);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: all 0.3s var(--ease);
}

.toggle-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.package-card {
  position: relative;
  padding: 36px 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--r-xl);
  transition: all 0.4s var(--ease);
  display: flex;
  flex-direction: column;
}

.package-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.package-card-popular {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, #FFF8F4 0%, var(--color-bg) 30%);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.15);
  transform: scale(1.02);
}

.package-card-popular:hover {
  transform: scale(1.02) translateY(-6px);
}

.popular-tag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-primary);
}

.package-head {
  text-align: center;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.package-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-bg-alt);
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.badge-accent {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.package-name {
  font-size: 24px;
  margin-bottom: 8px;
}

.package-head > p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
  min-height: 40px;
}

.package-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  color: var(--color-ink);
}

.package-price .price-currency {
  font-size: 20px;
  color: var(--color-text-muted);
}

.package-price .price-num {
  font-size: 42px;
}

.package-price .price-unit {
  color: var(--color-text-muted);
  font-size: 14px;
}

.package-card-popular .package-price .price-num {
  color: var(--color-primary);
}

.package-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 28px;
}

.pkg-group h5 {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}

.pkg-group ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pkg-group li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
  line-height: 1.4;
}

.pkg-group li span {
  flex: 1;
}

.pkg-group li::before {
  content: '';
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 12px;
}

.pkg-group li.yes::before {
  background-color: var(--color-success-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316A34A' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
}

.pkg-group li.no::before {
  background-color: var(--color-bg-alt);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239B9BA8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'%3E%3C/line%3E%3Cline x1='6' y1='6' x2='18' y2='18'%3E%3C/line%3E%3C/svg%3E");
}

.pkg-group li.no {
  color: var(--color-text-light);
}

.pkg-group li em {
  font-style: normal;
  font-size: 12px;
  padding: 2px 8px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  border-radius: var(--r-full);
  font-weight: 600;
  white-space: nowrap;
}

.package-card .btn {
  margin-top: auto;
}

.packages-note {
  margin-top: 32px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================
   抖音运营明细
   ============================================ */
.douyin {
  background: var(--color-bg);
}

.douyin-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.douyin-block {
  padding: 40px 36px;
  background: var(--color-bg-alt);
  border-radius: var(--r-xl);
  border: 1px solid var(--color-border);
}

.douyin-block-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 22px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.block-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
}

.douyin-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.douyin-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-bg);
  border-radius: var(--r-sm);
  border: 1px solid var(--color-border);
  transition: all 0.2s var(--ease);
  font-size: 14px;
}

.douyin-list li:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.douyin-list .check {
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-success-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316A34A' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E") center / 14px no-repeat;
  flex-shrink: 0;
}

.douyin-list em {
  font-style: normal;
  padding: 2px 10px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 600;
}

/* 抖音运营 - 区块描述 */
.douyin-block-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  margin-top: -16px;
}

/* 抖音运营 - 特色区块(内容输出) */
.douyin-block-featured {
  background: linear-gradient(180deg, var(--color-primary-soft) 0%, var(--color-bg-alt) 40%);
  border-color: rgba(255, 107, 53, 0.2);
}

/* 抖音运营 - 宽幅区块(运营后期) */
.douyin-block-wide {
  grid-column: 1 / -1;
  background: var(--color-bg-alt);
}

.douyin-sub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* 抖音运营 - 交付汇总 */
.douyin-summary {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 40px;
  padding: 36px;
  background: var(--color-ink);
  border-radius: var(--r-xl);
  color: #fff;
}

.summary-item {
  text-align: center;
  padding: 0 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-item:last-child {
  border-right: 0;
}

.summary-num {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
}

.summary-num span {
  font-size: 0.5em;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.5);
}

.summary-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
}

/* ============================================
   服务流程
   ============================================ */
.process {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.step {
  flex: 1 1 200px;
  max-width: 240px;
  padding: 32px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  text-align: center;
  transition: all 0.3s var(--ease);
  position: relative;
}

.step:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* 服务流程 - 高亮步骤 */
.step-highlight {
  background: linear-gradient(180deg, var(--color-primary-soft) 0%, var(--color-bg) 40%);
  border-color: rgba(255, 107, 53, 0.2);
}

.step-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: var(--r-md);
  margin: 0 auto 16px;
}

.step-icon svg {
  width: 24px;
  height: 24px;
}

.step-deliverables {
  margin: 16px 0;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-deliverables li {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}

.step-deliverables li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.5;
}

.step-duration {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.step-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary-soft);
  margin-bottom: 12px;
  letter-spacing: -0.04em;
}

.step h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.step p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.step-arrow {
  flex-shrink: 0;
  color: var(--color-primary);
  opacity: 0.6;
}

.step-arrow svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   合作客户
   ============================================ */
.cases {
  background: var(--color-bg-alt);
}

.cases-block {
  margin-bottom: 40px;
}

.cases-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  margin-bottom: 20px;
}

.cases-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}

.cases-dot-2 { background: var(--color-accent); }
.cases-dot-3 { background: #1A1A2E; }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.case-tag {
  padding: 16px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--r-sm);
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.3s var(--ease);
}

.case-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   联系
   ============================================ */
.contact {
  background: var(--color-bg);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info .section-tag {
  margin-bottom: 16px;
}

.contact-info .section-title {
  text-align: left;
  margin-bottom: 16px;
}

.contact-lead {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-alt);
  border-radius: var(--r-md);
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
}

.contact-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-label {
  display: block;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-value {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
}

.contact-value a {
  color: inherit;
  transition: color 0.2s var(--ease);
}

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

/* QR 卡片 */
.contact-qr {
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-card {
  width: 100%;
  max-width: 380px;
  padding: 40px 36px;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-primary-soft) 100%);
  border-radius: var(--r-xl);
  border: 1px solid rgba(255, 107, 53, 0.15);
  text-align: center;
  transition: all 0.3s var(--ease);
}

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

.qr-img-wrap {
  width: 220px;
  height: 220px;
  margin: 0 auto 24px;
  padding: 12px;
  background: #fff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}

.qr-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--r-md);
}

.qr-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.qr-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 24px;
}

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

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-brand .logo-img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  border-radius: 4px;
}

.footer-brand > p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s var(--ease);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   回到顶部
   ============================================ */
.back-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s var(--ease);
  z-index: 99;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  transform: translateY(-4px);
}

.back-top svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   微信二维码弹框
   ============================================ */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}

.qr-modal.active {
  opacity: 1;
  visibility: visible;
}

.qr-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 15, 26, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.qr-modal-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: var(--r-xl);
  box-shadow: 0 30px 80px rgba(15, 15, 26, 0.3);
  transform: scale(0.9) translateY(20px);
  transition: transform 0.4s var(--ease-snap);
  overflow: hidden;
}

.qr-modal.active .qr-modal-content {
  transform: scale(1) translateY(0);
}

.qr-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all 0.2s var(--ease);
  z-index: 2;
}

.qr-modal-close:hover {
  background: var(--color-border);
  color: var(--color-ink);
  transform: rotate(90deg);
}

.qr-modal-close svg {
  width: 18px;
  height: 18px;
}

.qr-modal-body {
  padding: 48px 36px 36px;
  text-align: center;
}

.qr-modal-title {
  font-size: 24px;
  margin-bottom: 8px;
}

.qr-modal-subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.qr-modal-img-wrap {
  width: 240px;
  height: 240px;
  margin: 0 auto 24px;
  padding: 14px;
  background: var(--color-bg-alt);
  border-radius: var(--r-lg);
  border: 2px solid rgba(255, 107, 53, 0.15);
}

.qr-modal-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--r-md);
}

.qr-modal-tip {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

/* ============================================
   UX 优化增强
   ============================================ */

/* 焦点可见性 */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.toggle-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* 按钮点击反馈 */
.btn:active {
  transform: scale(0.97);
}

.btn-primary:active {
  transform: scale(0.97) translateY(0);
}

/* 导航链接 active 状态 */
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* 文字选中增强 */
::selection {
  background: var(--color-primary);
  color: #fff;
  text-shadow: none;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 107, 53, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 107, 53, 0.5);
}

/* 链接悬停过渡 */
a {
  -webkit-tap-highlight-color: transparent;
}

/* 图片懒加载占位 */
img[loading="lazy"] {
  background: var(--color-bg-alt);
}

/* 咨询按钮统一标识 */
[data-consult] {
  cursor: pointer;
}

/* ============================================
   滚动入场动画
   ============================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal]:nth-child(2) { transition-delay: 0.08s; }
[data-reveal]:nth-child(3) { transition-delay: 0.16s; }
[data-reveal]:nth-child(4) { transition-delay: 0.24s; }
[data-reveal]:nth-child(5) { transition-delay: 0.32s; }
[data-reveal]:nth-child(6) { transition-delay: 0.40s; }

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-inner {
    grid-template-columns: repeat(3, 1fr);
  }
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-stats-bar {
    gap: 20px;
  }
  .about-stat-divider {
    display: none;
  }
  .timeline-track {
    overflow-x: auto;
    padding-bottom: 12px;
  }
  .timeline-item {
    min-width: 140px;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .geo-features {
    grid-template-columns: repeat(2, 1fr);
  }
  .platforms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .douyin-summary {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .summary-item:nth-child(3) {
    border-right: 0;
  }
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 导航栏移动菜单 */
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease);
  }
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }
  .nav-link:last-child {
    border-bottom: 0;
  }
  .nav-cta {
    margin: 12px 0 0;
    border-radius: var(--r-sm);
    text-align: center;
  }

  /* Hero */
  .hero {
    padding: 100px 0 60px;
  }
  .hero-actions {
    margin-bottom: 60px;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .stat-card {
    padding: 18px 12px;
  }
  .hero-scroll {
    display: none;
  }

  /* 信任 */
  .trust-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* 区块 */
  .section {
    padding: 60px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }

  /* 关于 */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 服务 */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* GEO */
  .geo-highlight {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .highlight-card {
    padding: 28px 24px;
  }
  .geo-features {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .geo-platforms {
    padding: 32px 24px;
  }
  .geo-guarantee {
    grid-template-columns: repeat(2, 1fr);
    padding: 28px 20px;
    gap: 16px;
  }
  .guarantee-item {
    border-right: 0;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .guarantee-item:nth-last-child(-n+2) {
    border-bottom: 0;
    padding-bottom: 0;
  }

  /* 套餐 - 移动端折叠 */
  .package-toggle {
    display: flex;
  }
  .packages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .package-card {
    display: none;
  }
  .package-card.active {
    display: flex;
  }
  .package-card-popular {
    transform: none;
  }
  .package-card-popular:hover {
    transform: translateY(-6px);
  }

  /* 抖音 */
  .douyin-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .douyin-block {
    padding: 28px 24px;
  }
  .douyin-sub-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .douyin-summary {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 24px 16px;
  }
  .summary-item {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 16px;
  }
  .summary-item:nth-last-child(-n+2) {
    border-bottom: 0;
    padding-bottom: 0;
  }

  /* 关于 - 时间轴 */
  .timeline-track {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }
  .timeline-track::before {
    display: none;
  }
  .timeline-item {
    max-width: 280px;
  }
  .timeline-dot {
    margin-bottom: 8px;
  }

  /* 关于 - 统计条 */
  .about-stats-bar {
    gap: 16px;
    padding: 24px 20px;
  }
  .about-stat strong {
    font-size: 24px;
  }

  /* 流程 */
  .process-steps {
    flex-direction: column;
    gap: 12px;
  }
  .step {
    width: 100%;
    max-width: none;
  }
  .step-arrow {
    transform: rotate(90deg);
  }

  /* 案例 */
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .case-tag {
    padding: 12px 8px;
    font-size: 13px;
  }

  /* 联系 */
  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .qr-card {
    padding: 32px 24px;
  }
  .qr-img-wrap {
    width: 180px;
    height: 180px;
  }

  /* 弹框 */
  .qr-modal-body {
    padding: 40px 24px 28px;
  }
  .qr-modal-img-wrap {
    width: 200px;
    height: 200px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    gap: 10px;
  }
  .stat-card {
    padding: 16px 8px;
  }
  .stat-num {
    font-size: 24px;
  }
  .btn {
    padding: 12px 22px;
    font-size: 14px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
}