/* ═══════════════════════════════════════════════
   设计令牌 & 重置
═══════════════════════════════════════════════ */
:root {
  --bg-deep:       #040d1f;
  --bg-footer:     #02071a;
  --grad-blue:     #2a4bff;
  --grad-cyan:     #00c9ff;
  --grad-purple:   #b829ff;
  --accent-cyan:   #00e5ff;
  --text-primary:  #f0f4ff;
  --text-muted:    rgba(240,244,255,0.55);
  --glass-bg:      rgba(255,255,255,0.05);
  --glass-border:  rgba(255,255,255,0.1);
  --card-hover-glow: 0 0 30px rgba(0,201,255,0.25);
  --nav-h:         68px;
  --radius-lg:     16px;
  --radius-md:     10px;
  --transition:    0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════════════
   渐变文字工具类
═══════════════════════════════════════════════ */
.gradient-text {
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-purple {
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════════
   毛玻璃卡片
═══════════════════════════════════════════════ */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
}
.glass-card-light {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
}

/* ═══════════════════════════════════════════════
   按钮
═══════════════════════════════════════════════ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-cyan));
  color: #fff;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary:hover {
  background: linear-gradient(270deg, var(--grad-blue), var(--grad-cyan));
  box-shadow: 0 0 28px rgba(0,201,255,0.45);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  background: transparent;
  color: var(--accent-cyan);
  border: 1.5px solid var(--accent-cyan);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-outline:hover {
  background: rgba(0,229,255,0.1);
  box-shadow: 0 0 18px rgba(0,229,255,0.3);
}

.btn-large { padding: 18px 48px; font-size: 1.1rem; }

/* ═══════════════════════════════════════════════
   Section 通用
═══════════════════════════════════════════════ */
.section { padding: 96px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 12px;
}
.section-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-cyan));
  border-radius: 2px;
  margin: 0 auto 16px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}
.section-subtitle small { opacity: 0.65; font-size: 0.85em; }

/* ═══════════════════════════════════════════════
   导航栏
═══════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition),
              backdrop-filter var(--transition);
}
.navbar.scrolled {
  background: rgba(4,13,31,0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}
.nav-logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-link {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
}

.nav-phones {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.nav-phone {
  flex-shrink: 0;
  font-size: 0.9rem;
  padding: 8px 18px;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════
   Hero
═══════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.aurora-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(42,75,255,0.18) 0%, transparent 70%),
              radial-gradient(ellipse 60% 50% at 80% 70%, rgba(0,201,255,0.1) 0%, transparent 70%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

/* Logo组 */
.hero-logo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.logo-ring-outer {
  position: relative;
  width: 160px; height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-ring-outer::before {
  content: '';
  position: absolute;
  inset: -16px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(90deg, var(--grad-blue), var(--grad-cyan), transparent) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: ring-spin 6s linear infinite;
}
.logo-ring-outer::after {
  content: '';
  position: absolute;
  inset: -30px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: linear-gradient(270deg, var(--grad-purple), transparent, var(--grad-cyan)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: ring-spin 10s linear infinite reverse;
  opacity: 0.6;
}

.logo-ring-inner {
  width: 140px; height: 140px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(42,75,255,0.5), 0 0 80px rgba(0,201,255,0.2);
}
.hero-logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-brand { text-align: center; }
.hero-brand-cn {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.25em;
  background: linear-gradient(90deg, #fff, var(--grad-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-brand-en {
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Hero文字 */
.hero-title {
  font-size: clamp(1.05rem, 3.8vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;   /* 强制单行 */
}
.hero-subtitle {
  color: var(--text-muted);
  font-size: clamp(0.85rem, 2vw, 1.15rem);
  margin-top: -16px;
  text-align: center;
}

/* CTA */
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.hero-call-btn { font-size: 0.95rem; }

/* 向下滚动 */
.scroll-down {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: var(--text-muted);
  margin-top: 8px;
  animation: bounce 2s ease-in-out infinite;
  transition: border-color var(--transition), color var(--transition);
}
.scroll-down:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

/* ═══════════════════════════════════════════════
   数据亮点条
═══════════════════════════════════════════════ */
.stats-bar {
  background: rgba(42,75,255,0.08);
  border-top: 1px solid rgba(42,75,255,0.25);
  border-bottom: 1px solid rgba(42,75,255,0.25);
  padding: 48px 24px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.stat-number {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1;
  display: block;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════
   关于我们
═══════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-intro {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 28px;
  line-height: 1.8;
}
.about-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}
.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}
.about-list li i {
  color: var(--accent-cyan);
  font-size: 1rem;
  flex-shrink: 0;
}
.about-desc {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.85;
}

/* 装饰图 */
.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.about-glow-ring {
  position: relative;
  width: 320px; height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-glow-bg {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42,75,255,0.35) 0%, rgba(0,201,255,0.15) 40%, transparent 70%);
}
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid transparent;
}
.orbit-ring-1 {
  width: 280px; height: 280px;
  background: linear-gradient(var(--bg-deep), var(--bg-deep)) padding-box,
              linear-gradient(90deg, var(--grad-blue), var(--grad-cyan)) border-box;
  animation: ring-spin 8s linear infinite;
}
.orbit-ring-2 {
  width: 320px; height: 320px;
  background: linear-gradient(var(--bg-deep), var(--bg-deep)) padding-box,
              linear-gradient(270deg, var(--grad-purple), transparent 60%) border-box;
  animation: ring-spin 14s linear infinite reverse;
  opacity: 0.5;
}
.about-logo-wrap {
  width: 180px; height: 180px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 50px rgba(42,75,255,0.4), 0 0 100px rgba(0,201,255,0.15);
  z-index: 1;
}
.about-logo-img { width: 100%; height: 100%; object-fit: cover; }

/* ═══════════════════════════════════════════════
   合作案例
═══════════════════════════════════════════════ */
.cases-section { background: rgba(255,255,255,0.015); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-hover-glow);
  border-color: rgba(0,229,255,0.35);
}

.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.case-tag-blue   { background: rgba(42,75,255,0.2); color: #7eb0ff; }
.case-tag-cyan   { background: rgba(0,201,255,0.15); color: var(--accent-cyan); }
.case-tag-purple { background: rgba(184,41,255,0.18); color: #d47aff; }
.case-tag-green  { background: rgba(0,230,118,0.15); color: #4dffa0; }

.case-metrics {
  display: flex;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.case-metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-metric.highlight .metric-value { font-size: 1.6rem; }
.metric-value {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}
.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.case-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--glass-border);
  padding-top: 14px;
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════
   价值观
═══════════════════════════════════════════════ */
.values-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--grad-blue) 0%, #1a1a6e 40%, var(--grad-purple) 100%);
}
.values-bg-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='2' cy='2' r='1' fill='rgba(255,255,255,0.06)'/%3E%3C/svg%3E") repeat;
  z-index: 0;
}
.values-content {
  position: relative;
  z-index: 1;
  text-align: center;
}
.values-quote {
  font-size: 8rem;
  line-height: 0.5;
  color: rgba(255,255,255,0.15);
  font-family: Georgia, serif;
  margin-bottom: 16px;
}
.values-headline {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: 0.2em;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 56px;
  text-shadow: 0 0 40px rgba(0,201,255,0.3);
}
.values-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.value-card {
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.value-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.value-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.4rem;
  color: #fff;
}
.value-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.value-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════
   联系方式
═══════════════════════════════════════════════ */
.contact-main {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  padding: 48px 40px;
  max-width: 860px;
  margin: 0 auto 40px;
  text-align: center;
}
.contact-phone-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  flex: 1;
  padding: 0 32px;
}
.contact-phone-divider {
  width: 1px;
  background: rgba(255,255,255,0.12);
  align-self: stretch;
  flex-shrink: 0;
}
.contact-phone {
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: filter var(--transition);
}
.contact-phone:hover { filter: brightness(1.2); }

.contact-call-btn { border-radius: 50px; }

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.contact-info-card {
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.contact-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-glow);
}
.contact-info-icon {
  font-size: 1.4rem;
  color: var(--accent-cyan);
  margin-top: 2px;
  flex-shrink: 0;
}
.contact-info-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}
.contact-info-card p {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════════
   页脚
═══════════════════════════════════════════════ */
.footer {
  background: var(--bg-footer);
  padding: 40px 0 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
}
.footer-logo {
  width: 28px; height: 28px;
  border-radius: 6px;
  object-fit: cover;
}
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  margin-left: auto;
}
.footer-nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--accent-cyan); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-bottom a {
  color: var(--accent-cyan);
  transition: opacity var(--transition);
}
.footer-bottom a:hover { opacity: 0.8; }

/* ═══════════════════════════════════════════════
   动画
═══════════════════════════════════════════════ */
@keyframes ring-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

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

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in-left {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fade-in-right {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

.fade-in-up,
.fade-in-left,
.fade-in-right {
  opacity: 0;
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-up.visible    { animation: fade-in-up   0.7s ease forwards; }
.fade-in-left.visible  { animation: fade-in-left  0.7s ease forwards; }
.fade-in-right.visible { animation: fade-in-right 0.7s ease forwards; }

/* ═══════════════════════════════════════════════
   响应式 – 平板 ≤ 1024px
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .nav-phone span { display: none; }          /* 只显示电话图标 */
  .nav-phone { padding: 8px 14px; }
}

/* ═══════════════════════════════════════════════
   响应式 – 平板 ≤ 900px
═══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .section { padding: 72px 0; }

  /* 导航：900px 以下隐藏导航文字链接，改用汉堡 */
  .nav-links { display: none; flex-direction: column; gap: 0; }
  .nav-links.open {
    display: flex;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(4,13,31,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    z-index: 999;
  }
  .nav-links.open .nav-link {
    display: block;
    padding: 14px 28px;
    font-size: 1rem;
  }
  .hamburger { display: flex; }
  .nav-phone { display: none; }               /* 平板以下导航栏隐藏电话，Hero有按钮 */

  /* 统计 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }

  /* 关于我们 */
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { order: -1; }

  /* 合作案例 */
  .cases-grid { grid-template-columns: 1fr; }

  /* 价值观 – 平板保留三列，字间距缩小 */
  .values-headline { letter-spacing: 0.12em; }
  .values-cards { gap: 16px; }

  /* 联系 */
  .contact-info-grid { grid-template-columns: repeat(3, 1fr); }

  /* 页脚 */
  .footer-nav { gap: 16px; }
}

/* ═══════════════════════════════════════════════
   响应式 – 手机 ≤ 640px
═══════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root { --nav-h: 56px; }

  .section { padding: 56px 0; }
  .section-header { margin-bottom: 40px; }

  /* Hero */
  .hero-content { padding: 32px 16px; gap: 20px; }
  .logo-ring-outer { width: 110px; height: 110px; }
  .logo-ring-inner { width: 92px; height: 92px; }
  .hero-brand-cn { letter-spacing: 0.15em; }
  .hero-cta { flex-direction: column; align-items: center; width: 100%; }
  .hero-cta .btn-primary,
  .hero-cta .btn-outline { width: 100%; max-width: 300px; justify-content: center; }

  /* 统计 */
  .stats-bar { padding: 36px 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }

  /* 关于我们装饰图 */
  .about-glow-ring { width: 220px; height: 220px; }
  .orbit-ring-1  { width: 192px; height: 192px; }
  .orbit-ring-2  { width: 220px; height: 220px; }
  .about-logo-wrap { width: 120px; height: 120px; }

  /* 价值观 */
  .values-quote { font-size: 5rem; }
  .values-headline { letter-spacing: 0.06em; margin-bottom: 36px; }
  .values-cards { grid-template-columns: 1fr; max-width: 360px; }

  /* 联系 */
  .contact-main { flex-direction: column; padding: 28px 16px; }
  .contact-phone-divider { width: 100%; height: 1px; align-self: auto; }
  .contact-phone-group { padding: 0; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .contact-info-card { flex-direction: row; gap: 14px; }

  /* 页脚 */
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-nav { margin-left: 0; gap: 14px; flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ═══════════════════════════════════════════════
   响应式 – 小屏手机 ≤ 390px
═══════════════════════════════════════════════ */
@media (max-width: 390px) {
  .hero-content { padding: 28px 12px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-number { font-size: 1.6rem; }
  .stat-label  { font-size: 0.78rem; }
  .contact-info-card { flex-direction: column; gap: 8px; }
}