/* =====================================================
   数钳 DataClaws v4.0 — Single Page Design System
   ===================================================== */

/* ---- 1. CSS Variables ---- */
:root {
  --bg-primary: #060b1f;
  --bg-secondary: #0a0e2a;
  --bg-footer: #04081a;
  --bg-card: rgba(10, 20, 50, 0.6);
  --bg-card-hover: rgba(15, 30, 70, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.02);

  --color-primary: #00c6ff;
  --color-primary-dark: #0072ff;
  --color-accent: #f0a500;
  --color-accent-dark: #d18a00;

  --text-primary: #ffffff;
  --text-secondary: #b0c4de;
  --text-muted: #6b7c93;

  --border-glow: rgba(0, 198, 255, 0.2);
  --border-card: rgba(255, 255, 255, 0.06);
  --glow-blue: 0 0 20px rgba(0, 198, 255, 0.3);
  --glow-gold: 0 0 24px rgba(240, 165, 0, 0.35);

  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-primary-text: linear-gradient(135deg, #00c6ff 0%, #6ea8ff 100%);
  --gradient-gold: linear-gradient(135deg, #f0a500 0%, #ffd76e 100%);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --max-width: 1200px;
  --section-padding: 120px 20px;
  --section-padding-mobile: 70px 18px;
  --border-radius: 12px;
  --radius-lg: 16px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- 2. Reset / Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 56px;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }
::selection { background: rgba(0, 198, 255, 0.25); color: #fff; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(0, 198, 255, 0.25); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 198, 255, 0.4); }

/* ---- 3. Typography ---- */
h1, h2, h3, h4 { color: var(--text-primary); font-weight: 700; line-height: 1.25; letter-spacing: 0.5px; }
h2 { font-size: 40px; }
h3 { font-size: 24px; font-weight: 600; }
h4 { font-size: 18px; font-weight: 600; }
p { line-height: 1.8; }

/* ---- 4. Layout ---- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }
.section { position: relative; padding: var(--section-padding); }

.section-header { text-align: center; margin-bottom: 70px; }
.section-eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 4px; font-weight: 600;
  color: var(--color-primary); padding: 6px 14px;
  border: 1px solid var(--border-glow); border-radius: 999px;
  background: rgba(0, 198, 255, 0.06); margin-bottom: 18px;
}
.section-title { font-size: 40px; }
.title-line {
  width: 60px; height: 2px; margin: 18px auto 0;
  background: var(--gradient-primary); border-radius: 2px;
}
.title-line-gold { background: var(--gradient-gold); }
.section-desc { margin-top: 16px; color: var(--text-muted); font-size: 15px; max-width: 700px; margin-left: auto; margin-right: auto; }

/* ---- 5. Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 36px; border-radius: 8px; font-size: 15px; font-weight: 600;
  position: relative; overflow: hidden; cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease, filter 0.3s ease;
}
.btn span { position: relative; z-index: 1; }
.btn-primary {
  background: var(--gradient-primary); color: #fff;
  box-shadow: 0 6px 18px rgba(0, 114, 255, 0.35);
}
.btn-primary::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, #6ea8ff, #00c6ff);
  opacity: 0; transition: opacity 0.3s ease;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0, 198, 255, 0.5); }
.btn-primary:hover::before { opacity: 1; }
.btn-secondary {
  background: transparent; color: var(--color-primary);
  border: 1px solid var(--border-glow);
}
.btn-secondary:hover { background: rgba(0, 198, 255, 0.08); border-color: var(--color-primary); box-shadow: var(--glow-blue); transform: translateY(-3px); }
.btn-gold {
  background: var(--gradient-gold); color: #2a1a00;
  box-shadow: 0 6px 18px rgba(240, 165, 0, 0.35);
}
.btn-gold::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, #ffd76e, #f0a500); opacity: 0; transition: opacity 0.3s ease; }
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(240, 165, 0, 0.55); }
.btn-gold:hover::before { opacity: 1; }
.btn-outline {
  background: transparent; color: var(--color-primary);
  border: 1px solid var(--border-glow);
}
.btn-outline:hover { background: rgba(0, 198, 255, 0.08); border-color: var(--color-primary); transform: translateY(-3px); }
.btn-outline-gold {
  background: transparent; color: var(--color-accent);
  border: 1px solid rgba(240, 165, 0, 0.3);
}
.btn-outline-gold:hover { background: rgba(240, 165, 0, 0.08); border-color: var(--color-accent); transform: translateY(-3px); }
.btn-lg { padding: 16px 44px; font-size: 17px; }
.btn-block { width: 100%; }

/* ---- 6. Tag ---- */
.tag {
  display: inline-flex; align-items: center;
  padding: 8px 20px; font-size: 14px; border-radius: 20px;
  color: var(--color-primary);
  background: rgba(0, 198, 255, 0.06);
  border: 1px solid var(--border-glow);
  transition: all 0.3s ease;
}
.tag:hover { background: rgba(0, 198, 255, 0.16); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0, 198, 255, 0.2); }
.tag-lg { padding: 12px 28px; font-size: 15px; }
.tag-label { background: rgba(0, 198, 255, 0.12); font-weight: 600; font-size: 12px; padding: 5px 14px; letter-spacing: 1px; }

/* ---- 7. Header ---- */
#header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 70px;
  transition: background 0.35s ease, backdrop-filter 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}
#header.scrolled {
  background: rgba(6, 11, 31, 0.78);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--border-glow);
}
.nav-container { max-width: var(--max-width); margin: 0 auto; height: 100%; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 28px; width: auto; filter: drop-shadow(0 0 12px rgba(0, 198, 255, 0.5)); }
.logo-text { font-size: 22px; font-weight: 700; color: var(--color-primary); letter-spacing: 0.5px; }

.nav-menu { display: flex; gap: 36px; align-items: center; }
.nav-link { font-size: 15px; color: var(--text-secondary); position: relative; padding: 6px 0; transition: color 0.3s ease; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--gradient-primary); transition: width 0.3s ease; border-radius: 2px; }
.nav-link:hover { color: var(--color-primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--color-primary); }
.nav-link.active::after { width: 100%; }

.nav-cta { font-size: 14px; font-weight: 600; color: #fff; padding: 9px 22px; border-radius: 8px; background: var(--gradient-primary); box-shadow: 0 4px 14px rgba(0, 114, 255, 0.35); transition: transform 0.3s var(--ease), box-shadow 0.3s ease; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 198, 255, 0.45); }

.nav-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: transparent; }
.nav-progress span { display: block; height: 100%; width: 0; background: var(--gradient-primary); transition: width 0.1s linear; }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: var(--color-primary); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- 8. Hero ---- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 120px 20px 80px; overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; }
.hero-bg { position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(0, 198, 255, 0.10) 0%, transparent 55%),
              radial-gradient(ellipse at 80% 70%, rgba(0, 114, 255, 0.08) 0%, transparent 55%);
}
.hero-grid { position: absolute; inset: 0; z-index: 0;
  background-image: linear-gradient(rgba(0, 198, 255, 0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(0, 198, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(80px); z-index: 0; pointer-events: none; }
.hero-glow-1 { width: 460px; height: 460px; background: rgba(0, 198, 255, 0.18); top: -120px; left: -120px; animation: floatGlow 14s ease-in-out infinite; }
.hero-glow-2 { width: 520px; height: 520px; background: rgba(0, 114, 255, 0.16); bottom: -160px; right: -160px; animation: floatGlow 18s ease-in-out infinite reverse; }
@keyframes floatGlow { 0%,100% { transform: translate(0,0); } 50% { transform: translate(40px,30px); } }

.hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; font-size: 13px; color: var(--color-primary); border: 1px solid var(--border-glow); border-radius: 999px; background: rgba(0, 198, 255, 0.06); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; transform: translateY(20px); animation: heroIn 0.8s var(--ease) 0.1s forwards; }
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary); box-shadow: 0 0 8px var(--color-primary); animation: pulseDot 1.8s ease-in-out infinite; }
@keyframes pulseDot { 0%,100% { opacity: 0.6; transform: scale(1); } 50% { opacity: 1; transform: scale(1.3); } }

.hero-title { margin-top: 24px; font-size: 64px; font-weight: 700; background: var(--gradient-primary-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; letter-spacing: 2px; opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 0.25s forwards; }
.hero-tagline { margin-top: 12px; font-size: 32px; font-weight: 600; color: var(--text-primary); letter-spacing: 4px; opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 0.45s forwards; }
.hero-desc { margin-top: 22px; font-size: 18px; color: var(--text-secondary); opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 0.65s forwards; }
.hero-en { display: block; margin-top: 6px; font-size: 16px; color: var(--text-muted); }
.hero-pain { margin-top: 18px; font-size: 15px; color: var(--text-muted); opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 0.7s forwards; }
.hero-cta { margin-top: 36px; display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 0.85s forwards; }
.hero-footnote { margin-top: 24px; font-size: 13px; color: var(--text-muted); opacity: 0; transform: translateY(20px); animation: heroIn 0.9s var(--ease) 1s forwards; }
@keyframes heroIn { to { opacity: 1; transform: translateY(0); } }

.scroll-down { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--text-muted); cursor: pointer; font-size: 12px; letter-spacing: 2px; }
.scroll-mouse { width: 26px; height: 42px; border: 2px solid var(--text-muted); border-radius: 14px; display: flex; justify-content: center; padding-top: 7px; }
.scroll-wheel { width: 4px; height: 8px; background: var(--color-primary); border-radius: 2px; animation: scrollWheel 1.6s ease-in-out infinite; }
@keyframes scrollWheel { 0% { opacity: 1; transform: translateY(0); } 70% { opacity: 0; transform: translateY(14px); } 100% { opacity: 0; transform: translateY(0); } }

/* ---- 9. Pain Points ---- */
.pain-points { background: var(--bg-primary); }
.pain-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.pain-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--border-radius); padding: 32px 28px; display: flex; gap: 18px; align-items: flex-start; transition: all 0.3s var(--ease); }
.pain-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-4px); }
.pain-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 10px; display: flex; align-items: center; justify-content: center; background: rgba(255, 80, 80, 0.1); border: 1px solid rgba(255, 80, 80, 0.2); }
.pain-icon span { display: block; }
.icon-layers, .icon-filter-x, .icon-trend-up, .icon-alert { width: 20px; height: 20px; position: relative; }
.icon-layers::before, .icon-layers::after { content: ""; position: absolute; left: 2px; right: 2px; border: 2px solid #ff6060; border-radius: 2px; }
.icon-layers::before { top: 2px; height: 6px; } .icon-layers::after { top: 10px; height: 6px; }
.icon-filter-x::before { content: ""; position: absolute; inset: 0; border: 2px solid #ff6060; border-radius: 4px; clip-path: polygon(0 0, 16px 20px, 0 20px, 0 0); }
.icon-trend-up { border-left: 2px solid #ff6060; border-bottom: 2px solid #ff6060; width: 16px; height: 14px; margin-top: 4px; }
.icon-alert { border: 2px solid #ffa500; border-radius: 50%; width: 20px; height: 20px; }
.icon-alert::after { content: "!"; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #ffa500; }
.pain-body h3 { font-size: 18px; margin-bottom: 6px; color: var(--text-primary); }
.pain-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* ---- 10. Product Intro ---- */
.product-intro { background: var(--bg-secondary); }
.intro-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.intro-text p { margin-bottom: 18px; color: var(--text-secondary); font-size: 16px; }
.intro-tags { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.scenario-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.intro-visual { position: relative; aspect-ratio: 1 / 0.85; border-radius: var(--radius-lg); background: var(--bg-card); border: 1px solid var(--border-glow); display: flex; flex-direction: column; align-items: center; justify-content: center; overflow: hidden; backdrop-filter: blur(6px); }
.intro-visual::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at center, rgba(0, 198, 255, 0.12), transparent 70%); }
.orbits { position: relative; width: 280px; height: 280px; }
.orbit { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); border: 1px dashed rgba(0, 198, 255, 0.25); border-radius: 50%; }
.orbit-1 { width: 110px; height: 110px; animation: spin 14s linear infinite; }
.orbit-2 { width: 200px; height: 200px; animation: spin 22s linear infinite reverse; }
.orbit-3 { width: 280px; height: 280px; animation: spin 32s linear infinite; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.orbit-core { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 18px; height: 18px; border-radius: 50%; background: var(--gradient-primary); box-shadow: 0 0 24px 6px rgba(0, 198, 255, 0.6); animation: pulseCore 2.4s ease-in-out infinite; }
@keyframes pulseCore { 0%,100% { transform: translate(-50%, -50%) scale(1); } 50% { transform: translate(-50%, -50%) scale(1.25); } }
.node { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--color-primary); box-shadow: 0 0 12px rgba(0, 198, 255, 0.8); top: 50%; left: 50%; }
.node-1 { margin: -6px 0 0 -6px; transform: rotate(0deg) translateX(55px); }
.node-2 { margin: -6px 0 0 -6px; transform: rotate(60deg) translateX(55px); }
.node-3 { margin: -6px 0 0 -6px; transform: rotate(120deg) translateX(55px); }
.node-4 { margin: -6px 0 0 -6px; transform: rotate(180deg) translateX(100px); background: #6ea8ff; }
.node-5 { margin: -6px 0 0 -6px; transform: rotate(240deg) translateX(100px); background: #6ea8ff; }
.node-6 { margin: -6px 0 0 -6px; transform: rotate(300deg) translateX(140px); background: var(--color-accent); box-shadow: 0 0 12px rgba(240, 165, 0, 0.8); }
.visual-label { position: relative; margin-top: 30px; font-size: 13px; color: var(--text-muted); letter-spacing: 3px; }

/* ---- 11. Features ---- */
.features { background: var(--bg-primary); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--border-radius); padding: 28px 24px; transition: all 0.3s var(--ease); position: relative; overflow: hidden; }
.feature-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--gradient-primary); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
.feature-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; background: rgba(0, 198, 255, 0.1); border: 1px solid var(--border-glow); margin-bottom: 16px; position: relative; }
.feature-icon span { display: block; }
/* Feature icons - CSS drawn */
.feature-icon[data-icon="globe"] span { width: 16px; height: 16px; border: 2px solid var(--color-primary); border-radius: 50%; box-shadow: 0 0 10px var(--color-primary); }
.feature-icon[data-icon="sliders"] { padding-top: 6px; }
.feature-icon[data-icon="sliders"] span { width: 16px; height: 2px; background: var(--color-primary); display: block; }
.feature-icon[data-icon="sliders"] span:nth-child(2) { margin: 4px 0; width: 10px; margin-left: 6px; }
.feature-icon[data-icon="sliders"] span:nth-child(3) { width: 14px; }
.feature-icon[data-icon="sparkles"] span { width: 8px; height: 8px; background: var(--color-primary); transform: rotate(45deg); box-shadow: 0 0 14px var(--color-primary); }
.feature-icon[data-icon="clock"] span { width: 16px; height: 16px; border: 2px solid var(--color-primary); border-radius: 50%; position: relative; box-shadow: 0 0 10px var(--color-primary); }
.feature-icon[data-icon="clock"] span::before, .feature-icon[data-icon="clock"] span::after { content: ""; position: absolute; background: var(--color-primary); top: 50%; left: 50%; transform-origin: 0 0; }
.feature-icon[data-icon="clock"] span::before { width: 5px; height: 1px; }
.feature-icon[data-icon="clock"] span::after { width: 1px; height: 4px; }
.feature-icon[data-icon="file-text"] span:first-child { width: 12px; height: 16px; border: 2px solid var(--color-primary); border-radius: 2px; }
.feature-icon[data-icon="file-text"] span:last-child { width: 6px; height: 1px; background: var(--color-primary); margin-top: 3px; }
.feature-icon[data-icon="download"] span { width: 0; height: 0; border-left: 8px solid transparent; border-right: 8px solid transparent; border-top: 12px solid var(--color-primary); }
.feature-icon[data-icon="shield"] span { width: 14px; height: 16px; background: var(--color-primary); clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%); box-shadow: 0 0 12px var(--color-primary); }
.feature-icon[data-icon="refresh"] span { width: 16px; height: 16px; border: 2px solid var(--color-primary); border-radius: 50%; border-right-color: transparent; transform: rotate(-45deg); }
.feature-card h4 { font-size: 15px; line-height: 1.4; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ---- 12. Advantages ---- */
.advantages { background: var(--bg-secondary); }
.advantages-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.advantage-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--border-radius); padding: 28px 22px; text-align: center; transition: all 0.3s var(--ease); }
.advantage-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-6px); box-shadow: 0 14px 34px rgba(0,0,0,0.35); }
.advantage-num { width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; color: #fff; border: 1.5px solid transparent; background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box, var(--gradient-primary) border-box; box-shadow: 0 0 14px rgba(0, 198, 255, 0.2); }
.advantage-card h4 { font-size: 16px; margin-bottom: 10px; }
.advantage-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ---- 13. Audience ---- */
.audience { background: var(--bg-primary); }
.audience-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }

/* ---- 14. Pricing ---- */
.pricing { background: var(--bg-secondary); }
.pricing-bg { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 80%; max-width: 1000px; height: 600px; background: radial-gradient(ellipse at center, rgba(240, 165, 0, 0.06), transparent 60%); pointer-events: none; }
.pricing-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: stretch; max-width: 920px; margin: 0 auto; }
.pricing-card { position: relative; padding: 40px 36px; background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: all 0.4s var(--ease); display: flex; flex-direction: column; overflow: hidden; }
.pricing-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(0,0,0,0.4); border-color: var(--border-glow); }
.pricing-card-featured { border: 1px solid var(--color-accent); box-shadow: 0 0 0 1px rgba(240, 165, 0, 0.15), 0 0 40px rgba(240, 165, 0, 0.18); transform: scale(1.03); }
.pricing-card-featured:hover { transform: scale(1.03) translateY(-6px); box-shadow: 0 0 0 1px rgba(240, 165, 0, 0.3), 0 24px 60px rgba(240, 165, 0, 0.22); }
.card-shine { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: linear-gradient(115deg, transparent 40%, rgba(240, 165, 0, 0.08) 50%, transparent 60%); transform: translateX(-20%); animation: shine 6s ease-in-out infinite; pointer-events: none; }
@keyframes shine { 0%,100% { transform: translateX(-30%); } 50% { transform: translateX(30%); } }
.recommended-badge { position: absolute; top: 18px; right: 18px; padding: 6px 16px; font-size: 12px; font-weight: 700; color: #2a1a00; background: var(--gradient-gold); border-radius: 999px; box-shadow: 0 4px 12px rgba(240, 165, 0, 0.4); z-index: 2; }
.card-header { margin-bottom: 6px; }
.card-title { font-size: 24px; }
.card-subtitle { margin-top: 8px; color: var(--text-muted); font-size: 14px; }
.card-price { margin-top: 22px; display: flex; align-items: baseline; gap: 4px; }
.price-currency { font-size: 22px; font-weight: 600; color: var(--text-secondary); }
.price-num { font-size: 48px; font-weight: 700; color: var(--text-primary); letter-spacing: -1px; }
.pricing-card-featured .price-num { color: #ffd76e; }
.price-unit { font-size: 16px; color: var(--text-muted); }
.card-divider { height: 1px; background: var(--border-card); margin: 26px 0; }
.card-features { display: flex; flex-direction: column; gap: 14px; flex: 1; margin-bottom: 12px; }
.card-features li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-secondary); }
.check { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; border-radius: 50%; font-size: 12px; font-weight: 700; background: rgba(0, 198, 255, 0.15); color: var(--color-primary); flex-shrink: 0; }
.pricing-card-featured .check { background: rgba(240, 165, 0, 0.18); color: var(--color-accent); }
.card-fit { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; padding-top: 8px; border-top: 1px solid var(--border-card); }
.card-cta { width: 100%; }

.pricing-rules { margin: 50px auto 0; max-width: 620px; }
.pricing-rules h4 { font-size: 16px; color: var(--text-primary); margin-bottom: 16px; text-align: center; }
.pricing-rules ul { display: flex; flex-direction: column; gap: 10px; }
.pricing-rules li { font-size: 14px; color: var(--text-muted); display: flex; align-items: baseline; gap: 10px; }
.rule-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); flex-shrink: 0; margin-top: 8px; opacity: 0.6; }
.pricing-cta { margin-top: 40px; text-align: center; }

/* ---- 15. Compliance Highlight ---- */
.compliance { background: var(--bg-primary); }
.compliance-highlight { max-width: 800px; margin: 0 auto; background: rgba(240, 165, 0, 0.05); border: 1px solid rgba(240, 165, 0, 0.2); border-radius: var(--radius-lg); padding: 40px; backdrop-filter: blur(6px); }
.compliance-highlight-header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.compliance-highlight-header h3 { color: var(--color-accent); font-size: 22px; }
.compliance-highlight-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.compliance-highlight-list li { display: flex; align-items: flex-start; gap: 14px; font-size: 15px; color: var(--text-secondary); }
.cl-num { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: rgba(240, 165, 0, 0.15); color: var(--color-accent); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.compliance-links { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; padding-top: 8px; border-top: 1px solid rgba(240, 165, 0, 0.15); }
.legal-link { color: var(--color-primary); font-size: 14px; font-weight: 600; transition: color 0.3s ease; }
.legal-link:hover { color: var(--color-accent); text-decoration: underline; }

/* ---- 16. Help ---- */
.help { background: var(--bg-secondary); }
.help-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.help-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: 40px 32px; transition: all 0.3s var(--ease); position: relative; overflow: hidden; }
.help-card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at top left, rgba(0, 198, 255, 0.08), transparent 50%); opacity: 0; transition: opacity 0.3s ease; }
.help-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-6px); box-shadow: 0 18px 40px rgba(0,0,0,0.35); }
.help-card:hover::before { opacity: 1; }
.help-icon { width: 64px; height: 64px; margin-bottom: 22px; position: relative; display: flex; align-items: center; justify-content: center; }
.icon-book { flex-direction: column; }
.icon-book span { display: block; }
.icon-book span:nth-child(1) { width: 40px; height: 4px; background: var(--color-primary); margin-bottom: 6px; border-radius: 2px; opacity: 0.9; }
.icon-book span:nth-child(2) { width: 40px; height: 4px; background: var(--color-primary); margin-bottom: 6px; opacity: 0.6; border-radius: 2px; }
.icon-book span:nth-child(3) { width: 40px; height: 4px; background: var(--color-primary); opacity: 0.4; border-radius: 2px; }
.icon-question { width: 64px; height: 64px; border: 2px solid var(--color-primary); border-radius: 50%; font-size: 30px; font-weight: 700; color: var(--color-primary); box-shadow: 0 0 18px rgba(0,198,255,0.25); }
.icon-chat { width: 56px; height: 40px; background: rgba(0,198,255,0.08); border: 2px solid var(--color-primary); border-radius: 12px 12px 12px 4px; }
.icon-chat span:first-child { width: 28px; height: 4px; background: var(--color-primary); margin-top: 12px; margin-left: 12px; border-radius: 2px; opacity: 0.9; }
.chat-tail { width: 12px; height: 12px; position: absolute; left: 10px; bottom: -7px; background: rgba(0,198,255,0.08); border-right: 2px solid var(--color-primary); border-bottom: 2px solid var(--color-primary); transform: rotate(45deg); }
.help-title { font-size: 20px; margin-bottom: 18px; }
.help-tutorials { display: flex; flex-direction: column; gap: 8px; }
.help-tutorials li { font-size: 13px; color: var(--text-muted); padding-left: 16px; position: relative; }
.help-tutorials li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); opacity: 0.5; }

/* FAQ Accordion */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item { border: 1px solid var(--border-card); border-radius: 8px; overflow: hidden; background: rgba(0, 0, 0, 0.15); }
.faq-q { width: 100%; text-align: left; padding: 14px 16px; font-size: 13px; font-weight: 600; color: var(--text-secondary); display: flex; justify-content: space-between; align-items: center; gap: 12px; transition: color 0.3s ease; }
.faq-q:hover { color: var(--color-primary); }
.faq-arrow { width: 10px; height: 10px; border-right: 2px solid var(--text-muted); border-bottom: 2px solid var(--text-muted); transform: rotate(45deg); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.open .faq-arrow { transform: rotate(-135deg); }
.faq-a { max-height: 0; overflow: hidden; padding: 0 16px; font-size: 13px; color: var(--text-muted); line-height: 1.7; transition: max-height 0.3s ease, padding 0.3s ease; }
.faq-item.open .faq-a { max-height: 200px; padding: 0 16px 14px; }

.contact-info { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.contact-item { font-size: 14px; color: var(--text-secondary); }
.contact-item strong { color: var(--text-primary); }
.contact-item a { color: var(--color-primary); }
.help-btn { width: 100%; }

/* ---- 17. About ---- */
.about { background: var(--bg-primary); }
.about-intro { max-width: 820px; margin: 0 auto 50px; text-align: center; }
.about-intro p { font-size: 16px; color: var(--text-secondary); margin-bottom: 16px; }
.about-strengths { max-width: 820px; margin: 0 auto 50px; }
.about-strengths h3 { text-align: center; margin-bottom: 24px; font-size: 22px; }
.strengths-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.strength-item { font-size: 14px; color: var(--text-secondary); display: flex; align-items: flex-start; gap: 10px; padding: 14px 18px; background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--border-radius); }
.strength-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary); flex-shrink: 0; margin-top: 6px; box-shadow: 0 0 8px var(--color-primary); }

/* Compliance Card (gold) */
.compliance-card { max-width: 820px; margin: 0 auto 40px; background: rgba(240, 165, 0, 0.05); border: 1px solid rgba(240, 165, 0, 0.2); border-radius: var(--radius-lg); padding: 40px; backdrop-filter: blur(6px); }
.compliance-header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.shield-icon { width: 32px; height: 36px; display: inline-flex; align-items: center; justify-content: center; position: relative; box-shadow: 0 0 14px rgba(240,165,0,0.35); background: var(--gradient-gold); clip-path: polygon(50% 0, 100% 18%, 100% 70%, 50% 100%, 0 70%, 0 18%); }
.shield-inner { width: 12px; height: 8px; border-left: 2px solid #2a1a00; border-bottom: 2px solid #2a1a00; transform: rotate(45deg) translateY(-2px); }
.compliance-header h3 { color: var(--color-accent); font-size: 22px; }
.compliance-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.compliance-list li { display: flex; align-items: flex-start; gap: 14px; font-size: 14px; color: var(--text-secondary); }
.li-num { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: rgba(240, 165, 0, 0.15); color: var(--color-accent); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.compliance-agree { padding-top: 6px; font-size: 14px; color: var(--text-muted); display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.compliance-agree a { color: var(--color-primary); }
.compliance-agree a:hover { text-decoration: underline; }
.sep { color: var(--text-muted); }

.about-mission { max-width: 820px; margin: 0 auto 50px; text-align: center; }
.about-mission h3 { margin-bottom: 16px; font-size: 22px; }
.about-mission p { font-size: 16px; color: var(--text-secondary); }

.about-info { max-width: 820px; margin: 0 auto; }
.info-table { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--border-radius); overflow: hidden; }
.info-row { display: flex; border-bottom: 1px solid var(--border-card); }
.info-row:last-child { border-bottom: none; }
.info-label { width: 140px; flex-shrink: 0; padding: 16px 20px; font-size: 14px; font-weight: 600; color: var(--color-primary); background: rgba(0, 198, 255, 0.04); }
.info-value { padding: 16px 20px; font-size: 14px; color: var(--text-secondary); flex: 1; }

/* ---- 18. CTA Final ---- */
.cta-final { background: var(--bg-primary); position: relative; }
.cta-final::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 40%, rgba(0, 198, 255, 0.08), transparent 60%); pointer-events: none; }
.cta-content { text-align: center; max-width: 700px; margin: 0 auto; position: relative; z-index: 1; }
.cta-content h2 { font-size: 36px; margin-bottom: 18px; }
.cta-content p { font-size: 17px; color: var(--text-secondary); margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.cta-note { margin-top: 30px; font-size: 14px; color: var(--text-muted); }

/* ---- 19. Footer ---- */
#footer { position: relative; background: var(--bg-footer); padding: 70px 20px 30px; overflow: hidden; }
.footer-glow { position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 800px; height: 400px; background: radial-gradient(ellipse at center, rgba(0, 114, 255, 0.1), transparent 70%); pointer-events: none; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo .logo-img { height: 24px; }
.footer-intro { color: var(--color-primary); font-size: 16px; font-weight: 600; margin-bottom: 10px; letter-spacing: 2px; }
.footer-desc { color: var(--text-muted); font-size: 14px; max-width: 320px; }
.footer-col h4 { font-size: 16px; color: var(--text-primary); margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a { font-size: 14px; color: var(--text-muted); transition: color 0.3s ease; }
.footer-col ul a:hover { color: var(--color-primary); }
.footer-bottom .footer-line { height: 1px; background: var(--border-card); margin-bottom: 24px; }
.footer-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 10px; font-size: 13px; color: var(--text-muted); }
.footer-record { font-size: 12px; color: var(--text-muted); }

/* ---- 20. Floating Contact Bar ---- */
.floating-bar { position: fixed; bottom: 0; left: 0; right: 0; z-index: 900; height: 56px; background: rgba(6, 11, 31, 0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--border-glow); }
.floating-bar-inner { max-width: 800px; margin: 0 auto; height: 100%; display: flex; align-items: center; justify-content: center; gap: 20px; font-size: 14px; }
.floating-phone { color: var(--text-secondary); font-weight: 600; transition: color 0.3s ease; }
.floating-phone:hover { color: var(--color-primary); }
.floating-divider { color: var(--border-card); }
.floating-link { color: var(--color-primary); font-weight: 600; transition: color 0.3s ease; }
.floating-link:hover { color: #fff; }
.floating-cta { padding: 6px 16px; background: var(--gradient-primary); color: #fff; border-radius: 6px; font-size: 13px; font-weight: 600; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.floating-cta:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0, 198, 255, 0.4); }

/* ---- 21. Modals ---- */
.modal-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-content { background: var(--bg-secondary); border: 1px solid var(--border-glow); border-radius: var(--radius-lg); padding: 40px; max-width: 560px; width: 100%; max-height: 90vh; overflow-y: auto; position: relative; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5); }
.modal-close { position: absolute; top: 16px; right: 16px; font-size: 28px; color: var(--text-muted); width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: all 0.3s ease; }
.modal-close:hover { color: #fff; background: rgba(255,255,255,0.1); }
.modal-title { font-size: 24px; text-align: center; margin-bottom: 24px; }
.modal-shield { display: flex; justify-content: center; margin-bottom: 16px; }
.modal-warning { font-size: 15px; color: var(--color-accent); font-weight: 600; margin-bottom: 16px; text-align: center; }
.modal-ol { margin-bottom: 28px; padding-left: 24px; }
.modal-ol li { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.7; }
.modal-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Compliance Modal specific */
.compliance-modal-content { border-color: rgba(240, 165, 0, 0.3); box-shadow: 0 0 60px rgba(240, 165, 0, 0.15); }

/* Demo Modal specific */
.demo-modal-content .form-group { margin-bottom: 18px; }
.demo-modal-content label { display: block; font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.demo-modal-content input[type="text"] { width: 100%; padding: 12px 16px; border-radius: 8px; border: 1px solid var(--border-card); background: var(--bg-card); color: var(--text-primary); font-size: 14px; outline: none; transition: border-color 0.3s ease; }
.demo-modal-content input[type="text"]:focus { border-color: var(--color-primary); }
.required { color: #ff5050; }
.radio-group { display: flex; flex-direction: column; gap: 10px; }
.radio-label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
.radio-label input { accent-color: var(--color-primary); }
.form-success { text-align: center; padding: 20px 0; }
.form-success p { font-size: 15px; color: var(--text-secondary); margin-bottom: 8px; }
.form-success p:first-child { color: var(--color-primary); font-size: 18px; font-weight: 600; }

/* Legal Modal specific */
.legal-modal-content { max-width: 900px; width: 95vw; }
.legal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; padding-bottom: 16px; border-bottom: 1px solid var(--border-card); }
.legal-header h2 { font-size: 22px; }
.legal-body { font-size: 14px; color: var(--text-secondary); line-height: 2; }
.legal-body h3 { font-size: 16px; color: var(--color-primary); margin: 24px 0 12px; }
.legal-body p { margin-bottom: 12px; }
.legal-body ul, .legal-body ol { padding-left: 20px; margin-bottom: 12px; }
.legal-body li { margin-bottom: 6px; }
.legal-body hr { border: none; border-top: 1px solid var(--border-card); margin: 20px 0; }

/* ---- 22. Scroll Reveal ---- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* ---- 23. Responsive ---- */
@media (max-width: 1199px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .intro-layout { grid-template-columns: 1fr; gap: 40px; }
  .intro-visual { max-width: 460px; margin: 0 auto; }
}
@media (max-width: 768px) {
  :root { --section-padding: var(--section-padding-mobile); }
  .section-header { margin-bottom: 48px; }
  .section-title { font-size: 28px; }
  h2 { font-size: 28px; }
  h3 { font-size: 20px; }

  .nav-cta { display: none; }
  .nav-menu { position: fixed; top: 70px; left: 0; right: 0; bottom: 0; flex-direction: column; justify-content: center; gap: 32px; background: rgba(6, 11, 31, 0.98); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transform: translateX(100%); transition: transform 0.4s var(--ease); border-top: 1px solid var(--border-glow); }
  .nav-menu.open { transform: translateX(0); }
  .nav-link { font-size: 20px; }
  .hamburger { display: flex; }

  .hero { padding: 100px 18px 100px; }
  .hero-title { font-size: 38px; letter-spacing: 1px; }
  .hero-tagline { font-size: 22px; letter-spacing: 2px; }
  .hero-desc { font-size: 15px; }
  .hero-cta { flex-direction: column; width: 100%; gap: 14px; }
  .hero-cta .btn { width: 100%; }
  .scroll-down { display: none; }

  .pain-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .pricing-cards { grid-template-columns: 1fr; gap: 20px; }
  .pricing-card-featured { transform: none; }
  .pricing-card-featured:hover { transform: translateY(-6px); }
  .help-cards { grid-template-columns: 1fr; }
  .strengths-grid { grid-template-columns: 1fr; }

  .cta-content h2 { font-size: 28px; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; }

  .compliance-highlight { padding: 26px 22px; }
  .compliance-card { padding: 26px 22px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-meta { flex-direction: column; align-items: flex-start; }
  .info-row { flex-direction: column; }
  .info-label { width: 100%; padding: 10px 20px; }

  .floating-bar-inner { gap: 12px; font-size: 13px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .price-num { font-size: 40px; }
  .feature-card, .advantage-card { padding: 22px 18px; }
  .pricing-card { padding: 28px 24px; }
  .modal-content { padding: 28px 22px; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}