@charset "UTF-8";
/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0B0F1A;
  --bg-card: #131829;
  --primary: #2563EB;
  --accent: #06B6D4;
  --deep-blue: #1D4ED8;
  --light-blue: #38BDF8;
  --sky: #0EA5E9;
  --fg: #E2E8F0;
  --fg-muted: #94A3B8;
  --fg-dim: #64748B;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.16);
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #0d1117; }
::-webkit-scrollbar-thumb { background: #2a3040; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a4560; }

/* ===== Utility Classes ===== */
.container {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: 1280px;
}
.container-narrow {
  max-width: 768px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--light-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradient-flow 6s ease infinite;
}

.glass-card {
  background: rgba(19, 24, 41, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
}

.hide-mobile { display: none; }
@media (min-width: 640px) { .hide-mobile { display: inline; } }

/* ===== Animations ===== */
@keyframes gradient-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.7; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes border-glow {
  0%, 100% { border-color: rgba(37, 99, 235, 0.3); }
  50% { border-color: rgba(37, 99, 235, 0.6); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== Reveal Animation ===== */
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal-up.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Tags / Chips ===== */
.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.tag-blue { background: rgba(37,99,235,0.1); color: var(--primary); border-color: rgba(37,99,235,0.2); }
.tag-cyan { background: rgba(6,182,212,0.1); color: var(--accent); border-color: rgba(6,182,212,0.2); }
.tag-deep-blue { background: rgba(29,78,216,0.1); color: var(--deep-blue); border-color: rgba(29,78,216,0.2); }
.tag-light-blue { background: rgba(56,189,248,0.1); color: var(--light-blue); border-color: rgba(56,189,248,0.2); }
.tag-mid-blue { background: rgba(99,115,229,0.1); color: #6373E5; border-color: rgba(99,115,229,0.2); }
.tag-muted { background: rgba(148,163,184,0.1); color: var(--fg-muted); border-color: rgba(148,163,184,0.2); }
.tag-sky { background: rgba(14,165,233,0.1); color: var(--sky); border-color: rgba(14,165,233,0.2); }

.chip {
  display: inline-block;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  color: rgba(226,232,240,0.7);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ===== Section Shared ===== */
.section-divider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(37,99,235,0.3), transparent);
}
.divider-accent { background: linear-gradient(90deg, transparent, rgba(6,182,212,0.3), transparent); }
.divider-deep-blue { background: linear-gradient(90deg, transparent, rgba(29,78,216,0.3), transparent); }
.divider-blue { background: linear-gradient(90deg, transparent, rgba(37,99,235,0.3), transparent); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ===== Navigation ===== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(19, 24, 41, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.nav-inner {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-title {
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
}
.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  color: var(--fg-muted);
}
.nav-links a:hover { color: var(--fg); transition: color 0.2s; }
@media (min-width: 768px) { .nav-links { display: flex; } }
.nav-cta {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  transition: opacity 0.2s;
}
.nav-cta:hover { opacity: 0.9; }

/* ===== Hero Section ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg-image {
  position: absolute;
  inset: 0;
  background: url('https://coze-coding-project.tos.coze.site/coze_storage_7644724284363112484/image/generate_image_1bdab4de-b15f-40a6-a576-36acf24f0a10.jpeg?sign=1811467144-92f1c306b5-0-1a9b4d66d19022bd5a67f0ce9f3c38f558e6b5a7c79a0105e1f743a52da3952f') center/cover no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(11,15,26,0.8), rgba(11,15,26,0.6), #0B0F1A);
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  animation: glow-pulse 3s ease-in-out infinite;
}
.hero-glow-1 { top: 25%; left: 25%; width: 384px; height: 384px; background: rgba(37,99,235,0.2); filter: blur(120px); }
.hero-glow-2 { bottom: 25%; right: 25%; width: 320px; height: 320px; background: rgba(6,182,212,0.15); filter: blur(100px); animation-delay: 1.5s; }
.hero-glow-3 { top: 50%; left: 50%; width: 600px; height: 600px; transform: translate(-50%,-50%); background: rgba(29,78,216,0.1); filter: blur(150px); animation-delay: 0.8s; }

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 0 24px;
  max-width: 896px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 32px;
  background: rgba(19,24,41,0.6);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--deep-blue);
  animation: glow-pulse 3s ease-in-out infinite;
}
.badge-text {
  font-size: 14px;
  font-weight: 500;
  color: rgba(226,232,240,0.8);
  font-family: var(--font-mono);
}

.hero-heading {
  font-size: clamp(3rem, 7vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.hero-heading-sub {
  color: var(--fg);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.75;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
@media (min-width: 640px) {
  .hero-buttons { flex-direction: row; justify-content: center; }
}

.btn-primary-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  font-size: 18px;
  font-weight: 700;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--light-blue));
  background-size: 200% 200%;
  animation: gradient-flow 6s ease infinite;
  color: #fff;
  box-shadow: 0 25px 50px -12px rgba(37,99,235,0.25);
  transition: transform 0.3s;
}
.btn-primary-lg:hover { transform: scale(1.05); }

.btn-outline-lg {
  display: inline-flex;
  align-items: center;
  padding: 16px 32px;
  font-size: 18px;
  font-weight: 500;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.05);
  color: var(--fg);
  transition: all 0.3s;
}
.btn-outline-lg:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 64px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.stat-item { text-align: center; }
.stat-value {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 900;
  font-family: var(--font-mono);
}
.stat-label { font-size: 14px; color: var(--fg-muted); margin-top: 4px; }

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: float 6s ease-in-out infinite;
  color: var(--fg-muted);
  font-size: 12px;
}

/* ===== Controller Section ===== */
.section-controller {
  position: relative;
  padding: 96px 0;
}
@media (min-width: 640px) { .section-controller { padding: 128px 0; } }

.bg-orb {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  filter: blur(100px);
}
.bg-orb-left { top: 50%; left: -160px; background: rgba(37,99,235,0.05); }
.bg-orb-right { bottom: 0; right: -160px; background: rgba(6,182,212,0.05); }

.controller-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) { .controller-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .controller-grid { grid-template-columns: repeat(4, 1fr); } }

.controller-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(19,24,41,0.6);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  transition: border-color 0.5s;
}
.controller-card:hover { border-color: var(--border-hover); }
.controller-card:nth-child(1):hover { border-color: rgba(14,165,233,0.4); }
.controller-card:nth-child(2):hover { border-color: rgba(37,99,235,0.4); }
.controller-card:nth-child(3):hover { border-color: rgba(6,182,212,0.4); }
.controller-card:nth-child(4):hover { border-color: rgba(56,189,248,0.4); }

.card-glow {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}
.controller-card:hover .card-glow { opacity: 1; }
.bg-glow-sky { background: rgba(14,165,233,0.15); }
.bg-glow-blue { background: rgba(37,99,235,0.15); }
.bg-glow-cyan { background: rgba(6,182,212,0.15); }
.bg-glow-sky2 { background: rgba(56,189,248,0.15); }

.card-image {
  position: relative;
  height: 176px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
@media (min-width: 1024px) { .card-image { height: 192px; } }

.card-image-sky { background: linear-gradient(135deg, rgba(14,165,233,0.3), rgba(37,99,235,0.3)); }
.card-image-blue { background: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(29,78,216,0.3)); }
.card-image-cyan { background: linear-gradient(135deg, rgba(6,182,212,0.3), rgba(14,165,233,0.3)); }
.card-image-sky2 { background: linear-gradient(135deg, rgba(56,189,248,0.3), rgba(6,182,212,0.3)); }

.card-image-glow {
  position: absolute;
  inset: 0;
  filter: blur(60px);
  opacity: 0.4;
  transition: opacity 0.5s;
  pointer-events: none;
}
.controller-card:hover .card-image-glow { opacity: 0.7; }

.card-image img {
  position: relative;
  width: 144px;
  height: 144px;
  object-fit: contain;
  filter: drop-shadow(0 25px 50px rgba(0,0,0,0.5));
  transition: transform 0.5s;
}
@media (min-width: 1024px) { .card-image img { width: 160px; height: 160px; } }
.controller-card:hover .card-image img { transform: scale(1.1); }

.card-body { padding: 20px; }
.card-name { font-size: 18px; font-weight: 700; color: var(--fg); }
.card-subtitle { font-size: 12px; color: var(--fg-muted); margin-top: 2px; margin-bottom: 12px; }

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.card-features {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--fg-muted);
}
.dot {
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 6px;
}
.card-features li strong {
  color: rgba(226,232,240,0.9);
  font-weight: 500;
}

/* ===== Guide Test Section ===== */
.section-guide {
  position: relative;
  padding: 96px 0;
}
@media (min-width: 640px) { .section-guide { padding: 128px 0; } }

.guide-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--bg), rgba(24,32,56,0.3), var(--bg));
}
.guide-orb {
  position: absolute;
  width: 256px;
  height: 256px;
  border-radius: 50%;
  filter: blur(100px);
  animation: glow-pulse 3s ease-in-out infinite;
}
.guide-orb-1 { top: 33%; left: 25%; background: rgba(37,99,235,0.08); }
.guide-orb-2 { bottom: 33%; right: 25%; background: rgba(6,182,212,0.08); animation-delay: 2s; }

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 64px;
}
@media (min-width: 640px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .steps-grid { grid-template-columns: repeat(4, 1fr); } }

.step-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-icon-wrap {
  position: relative;
  margin-bottom: 24px;
}
.step-icon-glow {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  filter: blur(20px);
  animation: glow-pulse 3s ease-in-out infinite;
}
.glow-deep-blue { background: rgba(29,78,216,0.15); }
.glow-blue { background: rgba(37,99,235,0.15); }
.glow-cyan { background: rgba(6,182,212,0.15); }
.glow-light-blue { background: rgba(56,189,248,0.15); }

.step-icon-box {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: 16px;
  background: rgba(19,24,41,0.6);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg);
}

.step-number {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #fff;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-desc {
  font-size: 14px;
  color: var(--fg-muted);
  max-width: 200px;
  line-height: 1.6;
}

.step-connector {
  display: none;
}
@media (min-width: 1024px) {
  .step-connector {
    display: block;
    position: absolute;
    top: 40px;
    left: calc(50% + 60px);
    width: calc(100% - 120px);
    height: 1px;
    background: linear-gradient(90deg, rgba(37,99,235,0.3), rgba(6,182,212,0.3));
  }
  .step-card:last-child .step-connector { display: none; }
}

/* Guide CTA */
.guide-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.cta-pulse-ring {
  position: absolute;
  inset: -16px;
  border-radius: 20px;
  border: 2px solid rgba(37,99,235,0.2);
  animation: border-glow 3s ease-in-out infinite;
  pointer-events: none;
}
.cta-pulse-ring-outer {
  position: absolute;
  inset: -32px;
  border-radius: 28px;
  border: 1px solid rgba(37,99,235,0.1);
  animation: glow-pulse 3s ease-in-out infinite;
  pointer-events: none;
}

.btn-primary-xl {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 28px 48px;
  font-size: 20px;
  font-weight: 700;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--light-blue));
  background-size: 200% 200%;
  animation: gradient-flow 6s ease infinite;
  color: #fff;
  box-shadow: 0 25px 50px -12px rgba(37,99,235,0.3);
  transition: transform 0.3s;
}
.btn-primary-xl:hover { transform: scale(1.05); }

.cta-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--fg-muted);
  margin-top: 24px;
}
.cta-hint svg { color: var(--deep-blue); }

/* ===== FAQ Section ===== */
.section-faq {
  position: relative;
  padding: 96px 0;
}
@media (min-width: 640px) { .section-faq { padding: 128px 0; } }

.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  border-radius: 12px;
  padding: 0 24px;
  background: rgba(19,24,41,0.6);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.3s;
}
.accordion-item:hover { border-color: rgba(255,255,255,0.1); }
.accordion-item.open { border-color: rgba(37,99,235,0.2); }

.accordion-trigger {
  width: 100%;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(226,232,240,0.9);
  text-align: left;
  transition: color 0.2s;
}
.accordion-trigger:hover { color: var(--fg); }

.accordion-trigger-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}
.accordion-trigger-inner .tag {
  flex-shrink: 0;
  margin-bottom: 0;
  font-size: 11px;
  padding: 2px 8px;
}

.accordion-question {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.accordion-chevron {
  flex-shrink: 0;
  color: var(--fg-muted);
  transition: transform 0.2s ease;
}
.accordion-item.open .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}
.accordion-content-inner {
  padding-bottom: 20px;
  color: var(--fg-muted);
  line-height: 1.75;
  font-size: 15px;
}

/* ===== Footer CTA Section ===== */
.section-footer-cta {
  position: relative;
  padding: 96px 0 0;
  overflow: hidden;
}
@media (min-width: 640px) { .section-footer-cta { padding: 128px 0 0; } }

.footer-cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(37,99,235,0.05), rgba(6,182,212,0.05), transparent);
  pointer-events: none;
}
.footer-glow-1 {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%,-50%);
  border-radius: 50%;
  background: rgba(37,99,235,0.08);
  filter: blur(150px);
  pointer-events: none;
}
.footer-glow-2 {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  transform: translate(-50%,-50%);
  border-radius: 50%;
  background: rgba(6,182,212,0.06);
  filter: blur(120px);
  pointer-events: none;
}

.footer-cta-content {
  position: relative;
  z-index: 10;
  text-align: center;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 48px;
  font-size: 14px;
  color: var(--fg-muted);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.trust-item svg { color: var(--deep-blue); }

/* Footer */
.site-footer {
  position: relative;
  z-index: 10;
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-bottom: 32px;
}
@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}
.footer-copy {
  font-size: 14px;
  color: var(--fg-muted);
}