/* ============================================
   千问办公企业版 - 宣传网站样式
   ============================================ */

/* === CSS Variables === */
:root {
  --bg-primary: #110f29;
  --bg-secondary: rgba(27, 24, 57, 0.6);
  --bg-card: rgba(27, 24, 57, 0.5);
  --bg-card-alt: rgba(17, 15, 41, 0.3);
  --text-primary: #f8fafc;
  --text-secondary: #9d9daf;
  --accent-cyan: #10b5cb;
  --accent-purple: #895af6;
  --accent-pink: #ec4699;
  --gradient-main: linear-gradient(135deg, #895af6, #10b5cb);
  --gradient-text: linear-gradient(135deg, #895af6, #ec4699);
  --gradient-btn: linear-gradient(to right, #895af6, #10b5cb);
  --border-card: 0.8px solid rgba(255, 255, 255, 0.1);
  --border-divider: 0.8px solid rgba(45, 43, 80, 0.5);
  --btn-secondary: #2a2749;
  --shadow-glow: 0 0 40px rgba(137, 90, 246, 0.3), 0 0 80px rgba(137, 90, 246, 0.1);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --max-width: 1280px;
  --nav-height: 64px;
}

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

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

body {
  font-family: "Alibaba PuHuiTi 3.0", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

/* === Container === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* === Section Common === */
.section {
  padding: 80px 0;
}

.section-tag {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(16, 181, 203, 0.1);
  border: 1px solid rgba(16, 181, 203, 0.2);
  margin-bottom: 24px;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-title .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
  background: rgba(17, 15, 41, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border-divider);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
}

.nav-logo-text .brand {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
}

.nav-logo-text .sub {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  padding: 8px 20px;
  border-radius: 8px;
  background: var(--gradient-btn);
  color: white !important;
  font-weight: 500;
  font-size: 14px;
  transition: opacity 0.2s;
}

.nav-cta:hover {
  opacity: 0.9;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

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

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

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(17, 15, 41, 0.98);
  backdrop-filter: blur(12px);
  z-index: 999;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav a {
  display: block;
  padding: 16px;
  font-size: 16px;
  color: var(--text-secondary);
  border-radius: 12px;
  transition: all 0.2s;
}

.mobile-nav a:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(137, 90, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 181, 203, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(16, 181, 203, 0.1);
  border: 1px solid rgba(16, 181, 203, 0.2);
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 32px;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero h1 .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-btn);
  color: white;
  min-width: 156px;
  height: 48px;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(137, 90, 246, 0.3);
}

.btn-secondary {
  background: var(--btn-secondary);
  color: var(--text-primary);
  min-width: 128px;
  height: 48px;
}

.btn-secondary:hover {
  background: #36335a;
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid rgba(16, 181, 203, 0.3);
  min-width: 128px;
  height: 48px;
}

.btn-outline:hover {
  background: rgba(16, 181, 203, 0.1);
}

.btn-full {
  width: 100%;
  height: 52px;
  font-size: 16px;
}

.hero-tags {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-tag svg {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
}

/* === Features Section === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: rgba(137, 90, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(16, 181, 203, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
}

/* === Card Header (icon + title row) === */
.card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.card-header h3 {
  margin-bottom: 0;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Why Need Section === */
.why-need-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.why-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.why-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.why-card-header svg {
  width: 28px;
  height: 28px;
  color: var(--accent-cyan);
}

.why-card-header h3 {
  font-size: 20px;
  font-weight: 600;
}

.why-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.why-card p:last-child {
  margin-bottom: 0;
}

/* Comparison */
.comparison-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.comparison-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-alt);
  border: var(--border-divider);
}

.comparison-tag {
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.comparison-tag.personal {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.comparison-tag.enterprise {
  background: rgba(16, 181, 203, 0.15);
  color: var(--accent-cyan);
}

.comparison-item span {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Problem list */
.problem-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.problem-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(236, 70, 153, 0.06);
  border: 1px solid rgba(236, 70, 153, 0.15);
  font-size: 14px;
  color: var(--text-secondary);
}

.problem-item svg {
  width: 16px;
  height: 16px;
  color: var(--accent-pink);
  flex-shrink: 0;
}

/* Control cards */
.control-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.control-card {
  background: var(--bg-card-alt);
  border: var(--border-divider);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.control-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.control-card .control-sub {
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.control-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Summary */
.why-summary {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.8;
  padding: 20px 24px;
  background: rgba(137, 90, 246, 0.08);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-purple);
}

.why-summary strong {
  color: var(--accent-cyan);
}

/* Action items */
.action-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.action-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-alt);
  border: var(--border-divider);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.action-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

/* CTA Banner */
.cta-banner {
  text-align: center;
  padding: 48px 32px;
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  margin-top: 32px;
}

.cta-banner .cta-en {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.cta-banner h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

/* === Advantages Section === */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.advantage-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.3s;
}

.advantage-card:hover {
  border-color: rgba(137, 90, 246, 0.3);
  transform: translateY(-2px);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(137, 90, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.advantage-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-purple);
}

.advantage-card .card-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Pricing Section === */
.pricing-promo {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.pricing-promo-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(16, 181, 203, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pricing-promo-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
}

.pricing-promo-text h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.pricing-promo-text p {
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.pricing-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all 0.3s;
}

.pricing-card.featured {
  border-color: rgba(137, 90, 246, 0.3);
  box-shadow: var(--shadow-glow);
}

.pricing-card-label {
  font-size: 13px;
  color: var(--accent-cyan);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.pricing-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-card .pricing-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: var(--border-divider);
}

.pricing-icon {
  position: absolute;
  top: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(16, 181, 203, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pricing-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
}

.pricing-price-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 4px;
}

.pricing-price .amount {
  font-size: 48px;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

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

.pricing-price-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.pricing-feature {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(45, 43, 80, 0.3);
  font-size: 14px;
}

.pricing-feature .label {
  color: var(--text-secondary);
}

.pricing-feature .value {
  font-weight: 500;
  text-align: right;
}

.pricing-feature .value.highlight {
  color: var(--accent-cyan);
}

.pricing-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(137, 90, 246, 0.15);
  color: var(--accent-purple);
  font-size: 12px;
  font-weight: 500;
  margin-top: 12px;
}

/* Common capabilities */
.common-capabilities {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.common-capabilities h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.capability-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-alt);
  border: var(--border-divider);
  font-size: 14px;
}

.capability-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* === About Section === */
.about-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}

.stat-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-card .stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 32px;
  max-width: 700px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-purple), var(--accent-cyan));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-purple);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent-purple);
}

.timeline-item .year {
  font-size: 13px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Contact Section === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(16, 181, 203, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
}

.contact-item-text h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-item-text p {
  font-size: 14px;
  color: var(--text-secondary);
}

.work-hours {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 8px;
}

.work-hours h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.work-hours p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-form h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--accent-pink);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(45, 43, 80, 0.5);
  background: rgba(17, 15, 41, 0.5);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-purple);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(157, 157, 175, 0.5);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  height: 48px;
  background: var(--gradient-btn);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
}

.form-submit:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* === Footer === */
.footer {
  border-top: var(--border-divider);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

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

.footer-brand .footer-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-brand .footer-logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.footer-brand .footer-logo-text {
  font-size: 16px;
  font-weight: 700;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 360px;
}

.footer-nav h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-contact p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.footer-bottom {
  border-top: var(--border-divider);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(157, 157, 175, 0.6);
}

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

.footer-tags span {
  font-size: 11px;
  color: rgba(157, 157, 175, 0.5);
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* === Scroll to Top === */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--btn-secondary);
  border: var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 100;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--accent-purple);
}

.scroll-top svg {
  width: 20px;
  height: 20px;
  color: var(--text-primary);
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* === Responsive === */
@media (max-width: 1024px) {
  .features-grid,
  .advantages-grid,
  .control-grid,
  .problem-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-cards {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 32px;
  }

  .section-title {
    font-size: 24px;
  }

  .features-grid,
  .advantages-grid,
  .control-grid,
  .problem-list,
  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .stat-card .stat-value {
    font-size: 28px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .pricing-promo {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .section {
    padding: 60px 0;
  }

  .why-card {
    padding: 24px;
  }

  .pricing-card {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

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

  .container {
    padding: 0 16px;
  }
}