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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --bg: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-dim2: #64748b;
  --border: #2d2d4a;
  --gradient: linear-gradient(135deg, #6366f1, #06b6d4);
  --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,.3);
  --shadow-glow: 0 0 60px rgba(99,102,241,.15);
}

html { scroll-behavior: smooth; }

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

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ====== Gradient Text ====== */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====== Buttons ====== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px;
  font-weight: 600; font-size: 15px;
  transition: all .3s; cursor: pointer; border: none;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,102,241,.5);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary-light);
  background: rgba(99,102,241,.08);
}
.btn-lg { padding: 16px 36px; font-size: 17px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-block { display: flex; justify-content: center; width: 100%; }

/* ====== Navbar ====== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  transition: all .3s;
}
.navbar.scrolled {
  background: rgba(15,15,26,.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 700;
}
.nav-links {
  display: flex; gap: 32px;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 15px;
  transition: color .3s;
}
.nav-links a:hover { color: var(--text); }

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

/* ====== Hero ====== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(120px); opacity: .4;
}
.orb-1 {
  width: 600px; height: 600px;
  background: var(--primary);
  top: -200px; right: -150px;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-2 {
  width: 400px; height: 400px;
  background: var(--accent);
  bottom: -100px; left: -100px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.orb-3 {
  width: 300px; height: 300px;
  background: #a855f7;
  top: 50%; left: 40%;
  animation: orbFloat 12s ease-in-out infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(.95); }
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 650px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(99,102,241,.15);
  border: 1px solid rgba(99,102,241,.3);
  padding: 6px 16px; border-radius: 50px;
  font-size: 14px; color: var(--primary-light);
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 800;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-dim);
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats { display: flex; gap: 48px; }
.stat { display: flex; flex-direction: column; }
.stat-number { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 14px; color: var(--text-dim); margin-top: 2px; }

.hero-visual {
  position: absolute; right: -50px; top: 50%; transform: translateY(-50%);
  z-index: 1; pointer-events: none;
}
.hero-img { width: 600px; height: auto; opacity: .9; }

@media (max-width: 1024px) {
  .hero-visual { display: none; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
}

/* ====== Ticker ====== */
.ticker-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 10px 0; overflow: hidden;
  white-space: nowrap;
}
.ticker-track {
  display: inline-flex; gap: 48px;
  animation: ticker 25s linear infinite;
  font-size: 14px; color: var(--text-dim);
}
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-track span {
  display: inline-flex; align-items: center; gap: 6px;
}

/* ====== Section Header ====== */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 12px;
  font-weight: 700;
}
.section-header p {
  font-size: 17px; color: var(--text-dim);
}

/* ====== Models ====== */
.models { padding: 100px 0; }
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 20px;
}
.model-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all .3s;
  position: relative;
}
.model-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-glow);
}
.model-icon { width: 56px; height: 56px; margin-bottom: 16px; }
.model-card h3 { font-size: 16px; margin-bottom: 8px; }
.model-card p { font-size: 13px; color: var(--text-dim); line-height: 1.6; }
.model-tag {
  position: absolute; top: 12px; right: 12px;
  background: var(--gradient);
  color: #fff; font-size: 11px; padding: 3px 10px;
  border-radius: 50px; font-weight: 600;
}

/* ====== How To ====== */
.howto { padding: 100px 0; background: var(--bg-card); }
.steps {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 0; flex-wrap: wrap;
}
.step {
  text-align: center; max-width: 260px;
  position: relative;
}
.step-number {
  font-size: 13px; font-weight: 700; color: var(--primary-light);
  letter-spacing: 2px; margin-bottom: 12px; text-transform: uppercase;
}
.step-icon-wrap {
  width: 100px; height: 100px; border-radius: 50%;
  background: rgba(99,102,241,.1);
  border: 2px solid rgba(99,102,241,.25);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  transition: all .3s;
}
.step:hover .step-icon-wrap {
  border-color: var(--primary);
  box-shadow: 0 0 30px rgba(99,102,241,.2);
}
.step-icon { width: 52px; height: 52px; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-dim); }
.step-arrow {
  display: flex; align-items: center;
  padding: 0 20px; margin-top: 35px;
}
@media (max-width: 768px) {
  .step-arrow { display: none; }
  .steps { flex-direction: column; align-items: center; gap: 40px; }
}

/* ====== Plans ====== */
.plans { padding: 100px 0; }
.plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  align-items: stretch;
}
.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  transition: all .3s;
  display: flex; flex-direction: column;
}
.plan-card:hover {
  transform: translateY(-4px);
}
.plan-free:hover { border-color: #10b981; box-shadow: 0 0 40px rgba(16,185,129,.1); }
.plan-pro:hover { border-color: #f59e0b; box-shadow: 0 0 40px rgba(245,158,11,.1); }
.plan-ultimate:hover { border-color: #a855f7; box-shadow: 0 0 40px rgba(168,85,247,.1); }
.plan-card.plan-pro { border-color: rgba(245,158,11,.4); }
.plan-badge {
  display: inline-block;
  background: rgba(16,185,129,.15);
  color: #10b981;
  font-size: 13px; font-weight: 600;
  padding: 4px 14px; border-radius: 50px;
  margin-bottom: 16px;
}
.plan-badge-hot {
  background: rgba(245,158,11,.15);
  color: #f59e0b;
}
.plan-card h3 { font-size: 20px; margin-bottom: 16px; }
.plan-price { margin-bottom: 8px; }
.price-num { font-size: 42px; font-weight: 800; }
.price-unit { font-size: 16px; color: var(--text-dim); }
.plan-token {
  font-size: 15px; color: var(--primary-light);
  font-weight: 600; margin-bottom: 24px;
}
.plan-features {
  list-style: none; margin-bottom: 28px;
  flex: 1;
}
.plan-features li {
  padding: 8px 0; font-size: 15px;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.plan-features li:last-child { border-bottom: none; }

/* ====== Testimonials ====== */
.testimonials { padding: 100px 0; background: var(--bg-card); }
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.testimonial-stars {
  color: #f59e0b; font-size: 18px;
  margin-bottom: 12px; letter-spacing: 2px;
}
.testimonial-card > p {
  font-size: 15px; color: var(--text);
  margin-bottom: 20px; line-height: 1.7;
  font-style: italic;
}
.testimonial-user {
  display: flex; align-items: center; gap: 12px;
}
.testimonial-user strong { display: block; font-size: 14px; }
.testimonial-user span { font-size: 13px; color: var(--text-dim); }

/* ====== CTA ====== */
.cta-section { padding: 100px 0; position: relative; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; pointer-events: none; }
.orb-4 {
  width: 400px; height: 400px;
  background: var(--primary);
  border-radius: 50%; filter: blur(120px);
  position: absolute; top: -100px; left: -100px;
  opacity: .3;
}
.orb-5 {
  width: 300px; height: 300px;
  background: var(--accent);
  border-radius: 50%; filter: blur(100px);
  position: absolute; bottom: -80px; right: -80px;
  opacity: .3;
}
.cta-card {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px 48px;
}
.cta-info h2 { font-size: 32px; margin-bottom: 16px; }
.cta-info p { font-size: 16px; color: var(--text-dim); line-height: 1.8; margin-bottom: 20px; }
.cta-countdown {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(245,158,11,.1);
  color: #f59e0b; font-size: 14px;
  padding: 8px 18px; border-radius: 50px;
  margin-bottom: 20px;
}
.cta-features-mini { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--text-dim); }

.cta-form {
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}
.form-title {
  font-size: 20px; font-weight: 700;
  margin-bottom: 20px; text-align: center;
}
.form-group { margin-bottom: 14px; }
.form-group input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color .3s;
}
.form-group input:focus {
  border-color: var(--primary-light);
}
.form-group input::placeholder { color: var(--text-dim2); }
.form-note {
  text-align: center; font-size: 12px; color: var(--text-dim2);
  margin-top: 14px;
}
.form-note a { color: var(--primary-light); text-decoration: underline; }
.form-trust {
  display: flex; justify-content: center; gap: 24px;
  margin-top: 14px; font-size: 12px; color: var(--text-dim2);
}

@media (max-width: 768px) {
  .cta-card { grid-template-columns: 1fr; padding: 32px 24px; }
}

/* ====== FAQ ====== */
.faq { padding: 100px 0; }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
  max-width: 900px; margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: all .3s;
}
.faq-item:hover {
  border-color: var(--primary-light);
  background: var(--bg-card-hover);
}
.faq-item h3 {
  font-size: 16px; margin-bottom: 10px;
  color: var(--text);
}
.faq-item p {
  font-size: 14px; color: var(--text-dim);
  line-height: 1.7;
}

/* ====== Footer ====== */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer-brand p {
  color: var(--text-dim); font-size: 14px;
  margin-top: 12px;
}
.footer-links h4 {
  font-size: 14px; color: var(--text);
  margin-bottom: 16px; text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-links a {
  display: block; font-size: 14px; color: var(--text-dim);
  padding: 6px 0; transition: color .2s;
}
.footer-links a:hover { color: var(--text); }
.footer-bottom {
  text-align: center; padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-dim2);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ====== Back To Top ====== */
.back-to-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 999;
  width: 44px; height: 44px;
  background: var(--gradient);
  border-radius: 50%;
  display: none; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(99,102,241,.4);
  transition: all .3s;
}
.back-to-top:hover { transform: translateY(-3px); }