/* ===== 全局变量 ===== */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #1ABC9C;
  --color-primary-dark: #0f9b82;
  --color-primary-light: #E8F8F5;
  --color-primary-glow: rgba(26,188,156,0.25);
  --color-accent: #c9a96e;
  --color-accent-light: #e8d5b0;

  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-white: #ffffff;
  --color-bg: #f8fafb;
  --color-border: #e2e8f0;
  --color-dark: #1a2332;
  --color-dark-2: #243044;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.07);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
  --shadow-xl: 0 16px 64px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 40px rgba(26,188,156,0.12);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 16px 48px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 100px;

  --transition-fast: 0.15s cubic-bezier(0.4,0,0.2,1);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.5s cubic-bezier(0.4,0,0.2,1);
  --transition-spring: 0.6s cubic-bezier(0.34,1.56,0.64,1);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "STSong", Georgia, serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--color-bg); }
.section-dark {
  background: linear-gradient(160deg, var(--color-dark) 0%, var(--color-dark-2) 50%, #1c2d3f 100%);
  position: relative;
  overflow: hidden;
}
.section-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 20% 50%, rgba(26,188,156,0.06) 0%, transparent 100%),
    radial-gradient(ellipse 500px 350px at 80% 30%, rgba(201,169,110,0.05) 0%, transparent 100%);
  pointer-events: none;
}

/* ===== 波浪分割线 ===== */
.wave-divider {
  position: relative;
  height: 80px;
  margin-top: -80px;
  z-index: 2;
  pointer-events: none;
  line-height: 0;
}
.wave-divider svg {
  width: 100%;
  height: 100%;
  display: block;
}
.wave-divider-flip { transform: scaleY(-1); margin-top: 0; margin-bottom: -80px; }
.wave-divider-dark svg path { fill: var(--color-bg); }

/* ===== 徽章标签 ===== */
.section-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}
.section-badge-light {
  color: var(--color-accent);
  background: rgba(201,169,110,0.15);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  letter-spacing: 1px;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  margin: 1rem auto 0;
  border-radius: 2px;
}
.section-title-light { color: var(--color-white); }

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
.section-desc-light { color: rgba(255,255,255,0.6); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.3px;
}
.btn-icon { width: 20px; height: 20px; flex-shrink: 0; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(26,188,156,0.4);
}
.btn-primary:active { transform: translateY(-1px); }

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition);
}
.btn-primary:hover::before { opacity: 1; }

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}

/* 按钮涟漪 */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: scale(0);
  animation: rippleEffect 0.6s linear;
  pointer-events: none;
}
@keyframes rippleEffect {
  to { transform: scale(4); opacity: 0; }
}

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(255,255,255,0.3);
}
.header.scrolled {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
  border-bottom-color: rgba(226,232,240,0.5);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  transition: var(--transition);
}
.header.scrolled .container { height: 62px; }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  z-index: 10;
}
.logo-img {
  width: 36px; height: 36px;
  border-radius: 10px;
  transition: var(--transition);
}
.logo:hover .logo-img { transform: rotate(-5deg) scale(1.05); }

.nav-list { display: flex; gap: 2rem; }
.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%;
  width: 0; height: 2.5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: var(--transition);
  transform: translateX(-50%);
  border-radius: 2px;
}
.nav-link:hover, .nav-link.active { color: var(--color-primary-dark); }
.nav-link:hover::after, .nav-link.active::after { width: 24px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 5px; z-index: 10; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); transition: var(--transition); border-radius: 2px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== 首屏 Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 72px;
  overflow: hidden;
  background: linear-gradient(160deg, #E8F8F5 0%, #D5F5E3 25%, #B2E4D5 50%, #8FD5C3 75%, var(--color-white) 100%);
}

.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 20%, rgba(26,188,156,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 75% 70%, rgba(26,188,156,0.08) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 90%, rgba(201,169,110,0.06) 0%, transparent 50%);
  animation: heroBgShift 15s ease-in-out infinite alternate;
}
@keyframes heroBgShift {
  0% { opacity: 1; }
  100% { opacity: 0.7; transform: scale(1.05); }
}

.hero-glow {
  position: absolute;
  width: 500px; height: 500px;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(26,188,156,0.15) 0%, transparent 70%);
  filter: blur(40px);
  animation: glowPulse 5s ease-in-out infinite;
  pointer-events: none;
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.8; transform: translateX(-50%) scale(1.15); }
}

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

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0;
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  10% { opacity: 0.6; }
  80% { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-100vh) scale(1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 40px 20px;
}

.hero-logo {
  width: 110px; height: 110px;
  margin: 0 auto 28px;
  border-radius: 26px;
  box-shadow:
    0 12px 40px rgba(0,0,0,0.1),
    0 0 0 4px rgba(255,255,255,0.6),
    0 0 60px rgba(26,188,156,0.1);
  animation: logoFloat 4s ease-in-out infinite;
  transition: var(--transition);
}
.hero-logo:hover { transform: scale(1.05) rotate(-3deg); }
@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
  letter-spacing: 4px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  color: var(--color-primary);
  margin-bottom: 1.75rem;
  font-weight: 400;
  letter-spacing: 6px;
  opacity: 0.9;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 2.5rem;
  letter-spacing: 3px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

/* Hero 数据统计 */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: center;
}
.hero-stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.2;
}
.hero-stat-plus {
  font-size: 1.4rem;
  color: var(--color-accent);
  font-weight: 700;
}
.hero-stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-top: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, transparent, var(--color-primary), transparent);
  opacity: 0.4;
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-arrow {
  width: 24px; height: 24px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg);
  opacity: 0.5;
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0,0); opacity: 0.5; }
  50% { transform: rotate(45deg) translate(6px,6px); opacity: 0.8; }
}

/* ===== 核心功能卡片 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: var(--transition-slow);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(26,188,156,0.15);
}

.feature-card-glow {
  position: absolute;
  bottom: -40px; right: -40px;
  width: 120px; height: 120px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition-slow);
  pointer-events: none;
}
.feature-card:hover .feature-card-glow { opacity: 1; }

.feature-icon-wrap {
  width: 68px; height: 68px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, rgba(26,188,156,0.08) 100%);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.feature-card:hover .feature-icon-wrap {
  transform: scale(1.08) rotate(-3deg);
  background: linear-gradient(135deg, rgba(26,188,156,0.18) 0%, rgba(26,188,156,0.12) 100%);
}
.feature-icon { font-size: 2rem; }

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--color-text);
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* ===== APP 截图 ===== */
.screenshots-row {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
  align-items: flex-start;
}

.screenshot-item { flex: 0 1 300px; max-width: 320px; }

.phone-frame {
  position: relative;
  background: #0d0d0d;
  border-radius: 36px;
  padding: 14px;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.15),
    0 0 0 1px rgba(255,255,255,0.08) inset,
    0 1px 0 rgba(255,255,255,0.06) inset;
  transition: var(--transition-slow);
}
.phone-frame:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow:
    0 28px 72px rgba(0,0,0,0.2),
    0 0 0 1px rgba(255,255,255,0.1) inset,
    0 1px 0 rgba(255,255,255,0.08) inset;
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 26px;
  background: #0d0d0d;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}
.phone-notch::after {
  content: '';
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 8px;
  background: #1a1a2e;
  border-radius: 50%;
  box-shadow: 0 0 0 2px #111;
}

.screenshot-img {
  border-radius: 24px;
  width: 100%;
  aspect-ratio: auto;
  display: block;
}

/* ===== 宣传推广 ===== */
.promo-row {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
  position: relative;
  z-index: 1;
}

.promo-item {
  flex: 0 1 400px;
  max-width: 460px;
  transition: var(--transition-slow);
}

.promo-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  transition: var(--transition-slow);
}
.promo-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, rgba(26,188,156,0.4), rgba(201,169,110,0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

.promo-img {
  border-radius: var(--radius-lg);
  transition: var(--transition-slow);
}

.promo-tilt-left { transform: perspective(1000px) rotateY(2deg); }
.promo-tilt-left:hover { transform: perspective(1000px) rotateY(0deg) translateY(-6px); }
.promo-tilt-right { transform: perspective(1000px) rotateY(-2deg); }
.promo-tilt-right:hover { transform: perspective(1000px) rotateY(0deg) translateY(-6px); }

.promo-tilt-left:hover .promo-img,
.promo-tilt-right:hover .promo-img { transform: scale(1.03); }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.contact-card {
  background: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: var(--transition-slow);
  position: relative;
}
.contact-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20%; right: 20%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transform: scaleX(0);
  transition: var(--transition);
}
.contact-card:hover::after { transform: scaleX(1); }
.contact-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.contact-icon-wrap {
  width: 56px; height: 56px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, rgba(26,188,156,0.06) 100%);
  border-radius: 50%;
  transition: var(--transition);
}
.contact-card:hover .contact-icon-wrap {
  background: linear-gradient(135deg, rgba(26,188,156,0.15) 0%, rgba(26,188,156,0.08) 100%);
  transform: scale(1.1);
}
.contact-svg-icon {
  width: 24px; height: 24px;
  color: var(--color-primary-dark);
}

.contact-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.4rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}
.contact-value {
  font-size: 1rem;
  color: var(--color-text);
  word-break: break-all;
  font-weight: 500;
}
a.contact-value { transition: var(--transition-fast); }
a.contact-value:hover { color: var(--color-primary-dark); }

/* ===== 页脚 ===== */
.footer {
  position: relative;
  color: #fff;
  padding: 4rem 0 2.5rem;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(160deg, var(--color-dark) 0%, #162030 40%, var(--color-dark-2) 100%);
}
.footer-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 0%, rgba(26,188,156,0.08) 0%, transparent 100%),
    radial-gradient(ellipse 40% 40% at 80% 100%, rgba(201,169,110,0.05) 0%, transparent 100%);
  pointer-events: none;
}

.footer-content { position: relative; z-index: 1; }

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 1rem;
}
.footer-logo {
  width: 42px; height: 42px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.footer-brand-text { display: flex; flex-direction: column; align-items: flex-start; }
.footer-brand-name { font-size: 1.2rem; font-weight: 700; letter-spacing: 2px; }
.footer-brand-en { font-size: 0.7rem; opacity: 0.4; letter-spacing: 1px; text-transform: uppercase; }

.footer-tagline {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  opacity: 0.6;
  margin-bottom: 2rem;
  letter-spacing: 2px;
}

.footer-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  margin: 0 auto 1.5rem;
}

.footer-bottom { display: flex; flex-direction: column; gap: 0.5rem; align-items: center; }
.copyright { font-size: 0.85rem; opacity: 0.5; }
.icp { font-size: 0.78rem; opacity: 0.35; }

/* ===== 滚动动画 ===== */
[data-animate] {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}
[data-animate="fade-up"] { transform: translateY(36px); }
[data-animate="fade-left"] { transform: translateX(-36px); }
[data-animate="fade-right"] { transform: translateX(36px); }
[data-animate].in-view {
  opacity: 1 !important;
  transform: translate(0, 0) !important;
}

/* ===== 移动端 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav {
    position: fixed; top: 62px; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: var(--transition);
    z-index: 999;
  }
  .nav.active { transform: translateX(0); }
  .nav-list { flex-direction: column; padding: 2rem 1.5rem; gap: 0; }
  .nav-list li { border-bottom: 1px solid var(--color-border); }
  .nav-link { display: block; padding: 1.1rem 0; font-size: 1.05rem; }
  .nav-link::after { display: none; }
  .nav-toggle { display: flex; }

  .section { padding: 70px 0; }
  .section-title { font-size: 1.7rem; }
  .section-desc { font-size: 0.95rem; }

  .hero-content { padding: 20px 10px; }
  .hero-logo { width: 88px; height: 88px; border-radius: 22px; }
  .hero-title { font-size: 2rem; letter-spacing: 2px; }
  .hero-subtitle { letter-spacing: 3px; }
  .hero-desc { font-size: 0.95rem; }
  .hero-stats { gap: 1.2rem; }
  .hero-stat-number { font-size: 1.4rem; }
  .hero-stat-divider { height: 28px; }

  .features-grid { grid-template-columns: 1fr; gap: 1rem; }
  .feature-card { padding: 2rem 1.5rem; }

  .screenshots-row { gap: 2rem; }
  .screenshot-item { flex: 0 1 260px; max-width: 280px; }
  .phone-frame { border-radius: 28px; padding: 10px; }
  .phone-notch { width: 80px; height: 22px; top: 7px; }
  .screenshot-img { border-radius: 20px; }

  .promo-row { gap: 1.5rem; }
  .promo-item { flex: 0 1 100%; max-width: 100%; }
  .promo-tilt-left, .promo-tilt-right { transform: none; }
  .promo-tilt-left:hover, .promo-tilt-right:hover { transform: translateY(-4px); }

  .contact-grid { grid-template-columns: 1fr; }

  .hero-btns { flex-direction: column; align-items: center; }
  .btn { width: 220px; text-align: center; }

  .wave-divider { height: 50px; margin-top: -50px; }
  .wave-divider-flip { margin-top: 0; margin-bottom: -50px; }
  .scroll-indicator { bottom: 16px; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: 1rem; }
  .hero-stat-divider { width: 40px; height: 1px; background: linear-gradient(90deg, transparent, var(--color-primary), transparent); }
  .section { padding: 56px 0; }
  .container { padding: 0 16px; }
}