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

:root {
  --primary: #6c5ce7;
  --primary-dark: #5b4bd5;
  --primary-light: #a55eea;
  --bg: #f7f8fa;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --green: #10b981;
  --blue: #3b82f6;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* ========== Gradient Text ========== */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.45);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border: 1.5px solid var(--gray-200);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108, 92, 231, 0.04);
}
.btn-white {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 14px; }
.btn-block { width: 100%; }
.btn-nav { padding: 8px 20px; font-size: 13px; }

/* ========== Navbar ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.04);
  transition: all 0.3s;
}
.navbar.scrolled {
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-800);
}
.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
}
.logo-img.small { width: 30px; height: 30px; border-radius: 8px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a:not(.btn) {
  font-size: 14px;
  color: var(--gray-500);
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:not(.btn):hover { color: var(--primary); }

.mobile-menu-btn { display: none; }

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(108, 92, 231, 0.08) 0%, transparent 70%);
}
.hero-inner { position: relative; }
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--gray-900);
}
.hero-desc {
  font-size: 18px;
  color: var(--gray-500);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 60px;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}
.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-800);
}
.stat-label {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--gray-200);
}

/* ========== Section Common ========== */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 16px;
  color: var(--gray-400);
}

/* ========== Features ========== */
.features {
  padding: 100px 0;
  background: var(--bg);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ========== Toolbox Showcase ========== */
.toolbox-showcase {
  margin-top: 48px;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
}
.toolbox-title {
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  color: var(--gray-700);
}
.toolbox-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.tool-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 8px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  transition: all 0.2s;
}
.tool-tag:hover {
  background: rgba(108, 92, 231, 0.06);
  border-color: var(--primary);
  color: var(--primary);
}

/* ========== Advantages ========== */
.advantages {
  padding: 100px 0;
  background: var(--bg);
}
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.compare-card {
  padding: 36px 32px;
}
.compare-card.ours {
  background: var(--white);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.compare-card.others {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-left: none;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.compare-label {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--gray-100);
}
.compare-card.ours .compare-label {
  color: var(--primary);
  border-bottom-color: rgba(108, 92, 231, 0.2);
}
.compare-card.others .compare-label {
  color: var(--gray-400);
}
.compare-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.compare-card li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 13.5px;
  line-height: 1.5;
}
.compare-card li strong { font-weight: 600; }
.advantage { color: var(--gray-700); }
.disadvantage { color: var(--gray-400); font-size: 13px; }

.icon-yes, .icon-no {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.icon-yes {
  background: #d1fae5;
}
.icon-yes::before {
  content: '';
  display: block;
  width: 8px;
  height: 5px;
  border-left: 2px solid #059669;
  border-bottom: 2px solid #059669;
  transform: rotate(-45deg);
  margin-top: -2px;
}
.icon-no {
  background: #fee2e2;
  position: relative;
}
.icon-no::before, .icon-no::after {
  content: '';
  position: absolute;
  width: 9px;
  height: 2px;
  background: #ef4444;
  border-radius: 1px;
  top: 50%;
  left: 50%;
}
.icon-no::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.icon-no::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

@media (max-width: 768px) {
  .compare-grid { grid-template-columns: 1fr; border-radius: var(--radius-lg); }
  .compare-card.ours { border-radius: var(--radius-lg) var(--radius-lg) 0 0; border: 2px solid var(--primary); }
  .compare-card.others { border-radius: 0 0 var(--radius-lg) var(--radius-lg); border: 1px solid var(--gray-200); border-top: none; }
}

/* ========== Showcase ========== */
.showcase {
  padding: 100px 0;
}
.showcase-window {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}
.window-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.window-title { flex: 1; text-align: center; font-size: 12px; color: var(--gray-400); }
.window-body {
  display: flex;
  min-height: 360px;
  background: var(--bg);
}
.mock-sidebar {
  width: 180px;
  background: white;
  border-right: 1px solid var(--gray-100);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mock-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
  margin-bottom: 12px;
}
.mock-nav-item {
  height: 36px;
  border-radius: 10px;
  background: var(--gray-100);
}
.mock-nav-item.active {
  background: var(--primary);
}
.mock-main {
  flex: 1;
  padding: 20px;
}
.mock-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.mock-title-bar {
  width: 120px;
  height: 20px;
  border-radius: 6px;
  background: var(--gray-200);
}
.mock-btn-group { display: flex; gap: 8px; }
.mock-btn {
  width: 80px;
  height: 32px;
  border-radius: 8px;
}
.mock-btn.purple { background: var(--primary); }
.mock-btn.outline { background: transparent; border: 1.5px solid var(--gray-300); }
.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.mock-card {
  background: white;
  border-radius: 12px;
  padding: 16px;
  border: 1px solid var(--gray-100);
}
.mock-card-title {
  width: 70%;
  height: 14px;
  border-radius: 4px;
  background: var(--gray-200);
  margin-bottom: 10px;
}
.mock-card-text {
  width: 100%;
  height: 10px;
  border-radius: 3px;
  background: var(--gray-100);
  margin-bottom: 6px;
}
.mock-card-text.short { width: 60%; }
.mock-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
}
.mock-badge {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 600;
}
.mock-badge.green { background: #d1fae5; color: #059669; }
.mock-badge.blue { background: #dbeafe; color: #2563eb; }
.mock-badge.gray { background: var(--gray-100); color: var(--gray-400); }
.mock-card-stat { font-size: 11px; color: var(--gray-400); font-weight: 600; }

/* ========== Workflow ========== */
.workflow {
  padding: 100px 0;
  background: var(--bg);
}
.workflow-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
}
.step {
  flex: 1;
  text-align: center;
  max-width: 220px;
}
.step-num {
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}
.step-arrow {
  font-size: 24px;
  color: var(--gray-300);
  margin-top: 20px;
  flex-shrink: 0;
}

/* ========== Pricing ========== */
.pricing {
  padding: 100px 0;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.price-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all 0.3s;
}
.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.price-card.popular {
  border-color: var(--primary);
  box-shadow: 0 8px 30px rgba(108, 92, 231, 0.15);
}
.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  border-radius: 100px;
  background: var(--primary);
  color: white;
  font-size: 12px;
  font-weight: 600;
}
.price-level {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 16px;
}
.price-amount {
  margin-bottom: 28px;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.price-currency { font-size: 20px; font-weight: 600; color: var(--gray-500); }
.price-num { font-size: 48px; font-weight: 800; color: var(--gray-900); line-height: 1; }
.price-period { font-size: 14px; color: var(--gray-400); margin-left: 4px; }
.price-features {
  list-style: none;
  margin-bottom: 28px;
}
.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-50);
}
.price-features li.disabled { color: var(--gray-400); }
.check { color: var(--green); font-weight: 700; }
.cross { color: var(--gray-300); }

/* ========== Download ========== */
.download {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.download-inner {
  text-align: center;
  color: white;
}
.download-inner h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}
.download-inner p {
  font-size: 16px;
  opacity: 0.85;
  margin-bottom: 36px;
}
.download-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
}
.download-version {
  font-size: 13px;
  opacity: 0.7;
}
.download-tips {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 13px;
  opacity: 0.8;
}

/* ========== Footer ========== */
.footer {
  padding: 60px 0 0;
  background: var(--gray-900);
  color: var(--gray-400);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  padding-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  max-width: 280px;
}
.footer-links {
  display: flex;
  gap: 60px;
}
.footer-col h4 {
  color: white;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--gray-400);
  padding: 4px 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .hero-title { font-size: 32px; }
  .hero-desc { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 22px; }

  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }

  .workflow-steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); }

  .mock-cards { grid-template-columns: 1fr; }
  .mock-sidebar { width: 60px; }

  .nav-links { display: none; }
  .mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
  }
  .mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--gray-600);
    border-radius: 2px;
  }

  .section-title { font-size: 26px; }
  .download-inner h2 { font-size: 26px; }
  .download-actions { flex-direction: column; }
  .download-tips { flex-direction: column; gap: 8px; }

  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-links { gap: 40px; }
}