/* ========================================
   昊彩繁星 企业官网 - 核心样式
   色调：深蓝 / 紫色渐变 + 白色留白
   ======================================== */

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

:root {
  --color-primary:   #1a1e4a;
  --color-secondary: #2d1b69;
  --color-accent:    #6c63ff;
  --color-accent2:   #a78bfa;
  --color-light:     #f8f9ff;
  --color-white:     #ffffff;
  --color-text:      #1e1e2e;
  --color-muted:     #6b7280;
  --color-border:    rgba(108, 99, 255, 0.15);

  --grad-hero: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  --grad-accent: linear-gradient(135deg, #6c63ff 0%, #a78bfa 100%);
  --grad-card:  linear-gradient(145deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 8px 32px rgba(108, 99, 255, 0.12);
  --shadow-hover: 0 16px 48px rgba(108, 99, 255, 0.25);

  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: var(--color-accent); border-radius: 3px; }

/* ========================================
   HEADER / NAVBAR
   ======================================== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 0;
}

#header.scrolled {
  background: rgba(15, 12, 41, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 2px 24px rgba(0,0,0,0.3);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 40px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--grad-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -1px;
  box-shadow: 0 4px 16px rgba(108,99,255,0.4);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 18px; right: 18px;
  height: 2px;
  background: var(--grad-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-links a:hover {
  color: #fff;
  background: rgba(108, 99, 255, 0.15);
}

.nav-links a:hover::after { transform: scaleX(1); }

/* CTA Button */
.nav-cta {
  background: var(--grad-accent) !important;
  color: #fff !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 4px 16px rgba(108,99,255,0.35);
}

.nav-cta:hover {
  background: linear-gradient(135deg, #7c74ff 0%, #b89bfa 100%) !important;
  box-shadow: 0 6px 24px rgba(108,99,255,0.5) !important;
  transform: translateY(-1px);
}

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

/* 后台管理入口 */
.nav-admin {
  color: rgba(255,255,255,0.55) !important;
  font-size: 13px !important;
  padding: 6px 14px !important;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm) !important;
  letter-spacing: 0.5px;
  transition: color var(--transition), border-color var(--transition), background var(--transition) !important;
}
.nav-admin:hover {
  color: #fff !important;
  border-color: rgba(255,255,255,0.4) !important;
  background: rgba(255,255,255,0.08) !important;
}
.nav-admin::after { display: none !important; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================================
   HERO SECTION
   ======================================== */
#hero {
  min-height: 100vh;
  background: var(--grad-hero);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* 星空粒子背景 */
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-bg canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}

/* 光晕装饰 */
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  animation: glowPulse 6s ease-in-out infinite;
}

.glow-1 {
  width: 600px; height: 600px;
  background: #6c63ff;
  top: -100px; right: -100px;
  animation-delay: 0s;
}

.glow-2 {
  width: 400px; height: 400px;
  background: #a78bfa;
  bottom: -50px; left: 10%;
  animation-delay: 3s;
}

.glow-3 {
  width: 300px; height: 300px;
  background: #3b82f6;
  top: 40%; left: 40%;
  animation-delay: 1.5s;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(1.1); }
}

/* Grid 线条背景 */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Hero 容器：PC端为绝对定位子元素提供参照，内容垂直居中 */
#hero .container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding-top: 72px;
  padding-bottom: 180px; /* 为底部stats留空间 */
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  width: 100%;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 99, 255, 0.2);
  border: 1px solid rgba(108, 99, 255, 0.4);
  color: var(--color-accent2);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 28px;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease both;
}

.hero-tag::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--color-accent2);
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s 0.2s ease both;
}

.hero-title .highlight {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto 48px;
  animation: fadeInUp 0.8s 0.4s ease both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.6s ease both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad-accent);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: 100px;
  box-shadow: 0 8px 32px rgba(108,99,255,0.4);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(108,99,255,0.55);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: rgba(255,255,255,0.85);
  font-size: 16px;
  font-weight: 600;
  padding: 13px 36px;
  border-radius: 100px;
  border: 1.5px solid rgba(255,255,255,0.25);
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: rgba(255,255,255,0.6);
  color: #fff;
  background: rgba(255,255,255,0.06);
  transform: translateY(-3px);
}

/* 向下箭头 */
.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  animation: bounceY 2s ease-in-out infinite;
}

.scroll-hint svg { opacity: 0.5; }

@keyframes bounceY {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Hero 数据统计 */
.hero-stats {
  position: absolute;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 48px;
  z-index: 2;
  animation: fadeInUp 0.8s 0.8s ease both;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.stat-num span {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}

/* ========================================
   SECTION COMMON
   ======================================== */
section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Reveal 动画 */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========================================
   SERVICES SECTION
   ======================================== */
#services {
  background: var(--color-light);
}

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

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(108, 99, 255, 0.3);
}

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

.service-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
  transition: transform var(--transition);
}

.service-card:hover .service-icon { transform: scale(1.1) rotate(5deg); }

.icon-1 { background: linear-gradient(135deg, #ede9fe, #ddd6fe); }
.icon-2 { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.icon-3 { background: linear-gradient(135deg, #e0e7ff, #c7d2fe); }

.service-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

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

.tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(108, 99, 255, 0.08);
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid rgba(108, 99, 255, 0.15);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
  margin-top: 20px;
  transition: gap var(--transition);
}

.service-card:hover .service-link { gap: 10px; }

/* ========================================
   ABOUT SECTION
   ======================================== */
#about {
  background: #fff;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-card-main {
  background: var(--grad-hero);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.about-card-main::before {
  content: '昊彩\A繁星';
  white-space: pre;
  position: absolute;
  top: -20px; right: -10px;
  font-size: 120px;
  font-weight: 900;
  color: rgba(108,99,255,0.12);
  line-height: 1;
  letter-spacing: -5px;
  user-select: none;
}

.about-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.25);
  border: 1px solid rgba(108,99,255,0.4);
  color: var(--color-accent2);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
  width: fit-content;
}

.about-card-title {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}

.about-card-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* 浮动小卡片 */
.about-float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: 12px;
}

.float-card-1 {
  top: -24px; right: -20px;
  animation: floatY 3s ease-in-out infinite;
}

.float-card-2 {
  bottom: -20px; left: -20px;
  animation: floatY 3s 1.5s ease-in-out infinite;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.float-info-label {
  font-size: 12px;
  color: var(--color-muted);
}

.float-info-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

/* About Right */
.about-content .section-header {
  text-align: left;
  margin-bottom: 32px;
}

.about-desc {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.9;
  margin-bottom: 32px;
}

.value-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.value-dot {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(108,99,255,0.12), rgba(167,139,250,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.value-text strong {
  display: block;
  font-size: 15px;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.value-text span {
  font-size: 14px;
  color: var(--color-muted);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
#contact {
  background: var(--color-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-hover);
}

.contact-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(108,99,255,0.3);
}

.contact-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
}

/* Map Placeholder */
.map-placeholder {
  background: var(--grad-hero);
  border-radius: var(--radius-lg);
  min-height: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  position: relative;
  overflow: hidden;
}

.map-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.1) 1px, transparent 1px);
  background-size: 40px 40px;
}

.map-icon {
  font-size: 48px;
  filter: drop-shadow(0 4px 16px rgba(108,99,255,0.5));
  position: relative;
  z-index: 1;
  animation: floatY 3s ease-in-out infinite;
}

.map-text {
  position: relative;
  z-index: 1;
}

/* ========================================
   FOOTER
   ======================================== */
#footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.55);
  padding: 60px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 2.4fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 32px;
}

/* 桌面端导航列组：3列并排 */
.footer-cols-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-brand .logo-text {
  font-size: 22px;
  margin-bottom: 12px;
  display: block;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 280px;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.social-btn:hover {
  background: rgba(108,99,255,0.3);
  border-color: rgba(108,99,255,0.5);
  transform: translateY(-2px);
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-accent2);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}

.footer-bottom a:hover { color: var(--color-accent2); }

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* ---------- 平板（≤1024px） ---------- */
@media (max-width: 1024px) {
  .services-grid        { grid-template-columns: repeat(2, 1fr); }
  .about-inner          { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid         { grid-template-columns: 1fr; }
  .footer-inner         { grid-template-columns: 1fr; gap: 32px; }
  .footer-cols-group    { grid-template-columns: repeat(3, 1fr); }
  .hero-stats           { gap: 32px; }
  .about-card-main      { min-height: 300px; }
  #hero .container      { padding-bottom: 160px; }
}

/* ---------- 手机端（≤768px） ---------- */
@media (max-width: 768px) {

  /* === 全局 === */
  section { padding: 56px 0; }
  .container { padding: 0 18px; }

  /* === 导航栏 === */
  .navbar { padding: 0 18px; height: 60px; }

  /* 移动端菜单：全屏遮罩式下拉 */
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    bottom: 0;                          /* 撑满剩余屏幕 */
    background: rgba(10, 8, 30, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 32px 24px 40px;
    gap: 6px;
    overflow-y: auto;
    z-index: 999;
  }
  .nav-links.open { display: flex; }

  /* 移动端每个菜单项更大更易点击 */
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    width: 100%;
    padding: 14px 20px;
    font-size: 17px;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-md);
    text-align: left;
  }
  .nav-links a::after { display: none; }
  .nav-links a:hover  { background: rgba(108,99,255,0.18); color: #fff; }

  /* 联系我们按钮在移动端变为全宽块状 */
  .nav-links .nav-cta {
    margin-top: 12px;
    text-align: center;
    padding: 14px 20px;
    border-radius: var(--radius-md) !important;
  }

  .hamburger { display: flex; }

  /* 防止菜单打开时背景滚动（由 JS 控制 body） */

  /* === Hero 区 === */
  #hero { min-height: 100svh; }

  /* 移动端container：取消min-height和大bottom-padding，改为普通纵向flex */
  #hero .container {
    min-height: 100svh;
    padding-top: 80px;
    padding-bottom: 40px;
    justify-content: center;
    gap: 48px;
  }

  .hero-content { width: 100%; }

  .hero-tag {
    font-size: 11px;
    letter-spacing: 1.5px;
    padding: 5px 14px;
  }

  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 32px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    max-width: 280px;
    justify-content: center;
    font-size: 15px;
    padding: 13px 24px;
  }
  .hero-stats {
    position: static;
    transform: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    width: 100%;
    max-width: 340px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    overflow: hidden;
    animation: none;
    opacity: 1;
    white-space: normal;
  }

  .stat-item {
    padding: 18px 12px;
    border-right: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    text-align: center;
  }
  .stat-item:nth-child(2n)  { border-right: none; }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4)   { border-bottom: none; }

  .stat-num   { font-size: 26px; }
  .stat-label { font-size: 12px; }

  /* 隐藏向下箭头 */
  .scroll-hint { display: none; }

  /* === Section 标题 === */
  .section-title { font-size: clamp(24px, 6vw, 34px); }
  .section-desc  { font-size: 15px; }
  .section-header { margin-bottom: 40px; }

  /* === 服务卡片：单列 === */
  .services-grid { grid-template-columns: 1fr; gap: 20px; }

  .service-card { padding: 28px 24px; }
  .service-icon { width: 52px; height: 52px; font-size: 24px; margin-bottom: 18px; }
  .service-title { font-size: 19px; }

  /* === 关于我们 === */
  .about-inner    { gap: 32px; }
  .about-float-card { display: none; }

  .about-card-main {
    min-height: 240px;
    padding: 32px 28px;
  }
  .about-card-main::before { font-size: 80px; }
  .about-card-title { font-size: 22px; }

  .about-content .section-header { margin-bottom: 20px; }
  .about-desc { font-size: 15px; margin-bottom: 20px; }

  /* === 联系我们 === */
  .contact-grid  { gap: 24px; }

  .contact-card {
    padding: 20px 20px;
    gap: 14px;
  }
  .contact-icon { width: 44px; height: 44px; font-size: 18px; }
  .contact-value { font-size: 14px; }

  .map-placeholder { min-height: 200px; }

  /* === 页脚 === */
  #footer { padding: 48px 0 24px; }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 36px;
    margin-bottom: 24px;
  }

  .footer-brand p { max-width: 100%; }

  /* 导航列横排 2×2 */
  .footer-cols-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    font-size: 12px;
  }
}

/* ---------- 小屏手机（≤480px） ---------- */
@media (max-width: 480px) {
  .container { padding: 0 14px; }

  /* 导航 */
  .navbar { padding: 0 14px; }
  .logo-text { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }

  /* Hero */
  .hero-tag { font-size: 10px; letter-spacing: 1px; }

  .btn-primary,
  .btn-secondary { max-width: 100%; }

  /* 服务卡片 */
  .service-card { padding: 24px 18px; }
  .service-title { font-size: 18px; }
  .service-desc  { font-size: 14px; }
  .tag { font-size: 11px; padding: 3px 10px; }

  /* 关于我们 */
  .about-card-main { padding: 28px 20px; min-height: 200px; }
  .about-card-title { font-size: 20px; }
  .about-card-main::before { font-size: 60px; opacity: 0.08; }

  /* 联系我们 */
  .contact-card { padding: 16px 16px; }
  .contact-value { font-size: 13px; word-break: break-all; }

  /* 页脚 */
  .footer-cols-group { grid-template-columns: 1fr 1fr; gap: 20px; }
  .footer-col h4 { font-size: 14px; margin-bottom: 14px; }
  .footer-col ul li a { font-size: 13px; }
}

/* ---------- 超小屏（≤360px） ---------- */
@media (max-width: 360px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .stat-num   { font-size: 22px; }
  .footer-cols-group { grid-template-columns: 1fr; }
}