:root {
  --bg: #07111f;
  --bg-soft: rgba(255, 255, 255, 0.08);
  --panel: rgba(8, 19, 34, 0.72);
  --panel-strong: rgba(8, 19, 34, 0.9);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f8fbff;
  --text-muted: #adc0d4;
  --ink: #07111f;
  --accent: #ff9a3c;
  --cyan: #6fe6ff;
  --mint: #6ff3c4;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 999px;
  --font-display: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(111, 230, 255, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 154, 60, 0.15), transparent 24%),
    linear-gradient(180deg, #07111f 0%, #0b1830 42%, #091524 100%);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.page-shell { position: relative; overflow: hidden; }
.aurora {
  position: fixed; width: 34rem; height: 34rem; border-radius: 50%;
  filter: blur(120px); opacity: 0.28; pointer-events: none; z-index: 0;
}
.aurora-left { top: -8rem; left: -12rem; background: #26d2ff; }
.aurora-right { top: 26rem; right: -12rem; background: #ff7d4d; }
.topbar, .section, .footer { position: relative; z-index: 1; }
.topbar {
  width: min(1180px, calc(100% - 32px)); margin: 20px auto 0; padding: 14px 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  border: 1px solid var(--line); background: rgba(7, 17, 31, 0.62);
  backdrop-filter: blur(18px); border-radius: var(--radius-sm);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.18);
}
.brand-block { display: flex; align-items: center; gap: 14px; }
.brand-chip {
  display: inline-flex; align-items: center; justify-content: center; padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(255, 154, 60, 0.22), rgba(111, 230, 255, 0.18));
  color: #fff4e8; font-family: var(--font-display); font-size: 12px; font-weight: 800;
  letter-spacing: 0.2em; text-transform: uppercase;
}
.brand-title { font-family: var(--font-display); font-size: 20px; font-weight: 800; }
.topnav { display: flex; align-items: center; gap: 22px; color: var(--text-muted); font-size: 14px; }
.topnav a { transition: color 180ms ease, transform 180ms ease; }
.topnav a:hover { color: var(--text); transform: translateY(-1px); }
.header-cta, .button {
  display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius-sm);
  font-weight: 700; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}
.header-cta {
  min-height: 46px; padding: 0 18px; color: var(--ink);
  background: linear-gradient(135deg, #ffd08a, #ff9a3c); box-shadow: 0 10px 24px rgba(255, 154, 60, 0.28);
}
.header-cta:hover, .button:hover, .card-link:hover, .faq-item summary:hover { transform: translateY(-2px); }
.section { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 72px 0; }
.hero {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.88fr);
  gap: 32px; align-items: center; min-height: calc(100vh - 96px); padding-top: 36px;
}
.hero-copy { max-width: 700px; }
.eyebrow, .section-kicker, .panel-badge, .card-tag { text-transform: uppercase; letter-spacing: 0.22em; font-size: 12px; font-weight: 700; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--cyan); margin-bottom: 20px; }
.eyebrow::before { content: ""; width: 48px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); }
.hero h1, .section-heading h2, .footer h3 { margin: 0; font-family: var(--font-display); letter-spacing: -0.04em; }
.hero h1 { font-size: clamp(42px, 7vw, 86px); line-height: 0.96; }
.hero-description, .section-heading p, .footer-copy { color: var(--text-muted); line-height: 1.75; }
.hero-description { max-width: 640px; margin: 24px 0 0; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.button { min-height: 58px; padding: 0 26px; border: 1px solid transparent; }
.button-primary { color: var(--ink); background: linear-gradient(135deg, #ffe1a7, #ff9a3c); box-shadow: 0 18px 38px rgba(255, 154, 60, 0.28); }
.button-secondary { color: var(--text); background: rgba(255, 255, 255, 0.05); border-color: var(--line); }
.hero-metrics { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.metric {
  min-width: 160px; padding: 18px 20px; background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line); border-radius: var(--radius-md); backdrop-filter: blur(14px);
}
.metric strong { display: block; font-family: var(--font-display); font-size: 28px; font-weight: 800; }
.metric span { display: block; margin-top: 6px; color: var(--text-muted); font-size: 14px; }
.hero-panel {
  padding: 24px; border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid var(--line); box-shadow: var(--shadow); backdrop-filter: blur(20px);
}
.panel-badge { display: inline-flex; padding: 8px 12px; border-radius: var(--radius-sm); color: #fff8ed; background: rgba(255,154,60,0.18); }
.panel-card { margin-top: 18px; padding: 24px; border-radius: var(--radius-lg); background: var(--panel-strong); border: 1px solid rgba(255,255,255,0.1); }
.panel-label { color: var(--text-muted); font-size: 14px; }
.panel-stack { display: grid; gap: 14px; margin-top: 18px; }
.quick-card {
  display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center;
  padding: 18px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.08);
}
.quick-icon, .tool-icon, .service-mark { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.quick-icon {
  width: 48px; height: 48px; border-radius: 16px;
  background: linear-gradient(135deg, rgba(255,154,60,0.24), rgba(111,230,255,0.22));
  font-size: 22px;
}
.quick-copy strong, .tool-card h3, .service-card h3, .tutorial-card h3, .workflow-step h3 {
  display: block; font-family: var(--font-display); font-size: 20px; font-weight: 800; line-height: 1.15;
}
.quick-copy span, .panel-note, .card-meta, .tutorial-status, .workflow-step p, .faq-answer { color: var(--text-muted); line-height: 1.7; }
.quick-arrow { color: var(--cyan); font-size: 22px; }
.panel-note { margin-top: 18px; padding: 16px 18px; border-radius: var(--radius-md); background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); }
.section-heading { max-width: 720px; margin-bottom: 28px; }
.section-kicker { color: var(--mint); margin-bottom: 14px; }
.section-heading h2 { font-size: clamp(30px, 4vw, 52px); }
.section-heading p { margin: 18px 0 0; font-size: 17px; }
.service-grid, .tool-grid, .workflow-grid, .tutorial-grid { display: grid; gap: 20px; }
.service-grid, .tool-grid, .workflow-grid, .tutorial-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-card, .tool-card, .tutorial-card, .workflow-step, .faq-item {
  position: relative; overflow: hidden; border-radius: var(--radius-lg); border: 1px solid var(--line);
}
.service-card, .tutorial-card, .workflow-step, .faq-item { background: rgba(255,255,255,0.05); backdrop-filter: blur(16px); }
.service-card { min-height: 290px; padding: 24px; }
.service-card::after, .tool-card::after, .tutorial-card::after {
  content: ""; position: absolute; inset: auto -20% -55% auto; width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.18), transparent 68%); pointer-events: none;
}
.service-mark {
  width: 60px; height: 60px; border-radius: 20px; margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(255,154,60,0.26), rgba(111,230,255,0.22)); font-size: 28px;
}
.card-tag { display: inline-flex; margin-top: 18px; padding: 8px 12px; border-radius: var(--radius-sm); background: rgba(255,255,255,0.08); color: #fff0d8; }
.card-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 24px; color: var(--text); font-weight: 700; }
.tool-card {
  min-height: 310px; padding: 26px; background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(235,244,255,0.9));
  color: var(--ink); box-shadow: 0 22px 50px rgba(0,0,0,0.18);
}
.tool-card .card-meta { color: #45607b; }
.tool-card .card-tag { color: #6d3b00; background: rgba(255,154,60,0.14); }
.tool-icon {
  width: 72px; height: 72px; border-radius: 24px; margin-bottom: 20px;
  background: linear-gradient(135deg, #0d2745, #112f55); color: white; font-size: 32px;
}
.tool-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 28px; color: #0d2745; font-weight: 800; }
.workflow-step { padding: 24px; }
.workflow-index {
  display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 18px;
  background: linear-gradient(135deg, rgba(255,154,60,0.22), rgba(111,230,255,0.18));
  color: #fff7ea; font-family: var(--font-display); font-size: 24px; font-weight: 800;
}
.workflow-step h3 { margin: 20px 0 12px; }
.tutorial-card { min-height: 290px; padding: 24px; }
.tutorial-topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tutorial-status { font-size: 13px; }
.faq-list { display: grid; gap: 16px; }
.faq-item summary { list-style: none; cursor: pointer; padding: 22px 24px; font-family: var(--font-display); font-size: 20px; font-weight: 700; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-answer { padding: 0 24px 24px; }
.footer {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 24px;
  padding-top: 20px; padding-bottom: 60px;
}
.footer-mark {
  margin: 0 0 12px; color: var(--cyan); font-family: var(--font-display); font-size: 14px; font-weight: 800;
  letter-spacing: 0.24em; text-transform: uppercase;
}
.footer h3 { font-size: clamp(28px, 4vw, 44px); }
.footer-copy { max-width: 660px; margin: 18px 0 0; }
.footer-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 540ms ease, transform 540ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 1080px) {
  .hero, .service-grid, .tool-grid, .workflow-grid, .tutorial-grid, .footer { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { display: grid; }
  .footer { align-items: flex-start; }
}
@media (max-width: 920px) {
  .topbar { flex-wrap: wrap; justify-content: center; border-radius: 28px; }
  .topnav { order: 3; width: 100%; justify-content: center; flex-wrap: wrap; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 26px; }
  .service-grid, .tool-grid, .workflow-grid, .tutorial-grid { grid-template-columns: 1fr; }
  .footer { display: grid; grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .section, .footer { width: min(1180px, calc(100% - 24px)); }
  .topbar { width: min(1180px, calc(100% - 24px)); margin-top: 12px; padding: 14px; }
  .brand-block { width: 100%; justify-content: center; flex-direction: column; gap: 10px; }
  .header-cta, .button { width: 100%; }
  .hero-actions, .hero-metrics, .footer-actions { flex-direction: column; }
  .hero-panel, .panel-card, .service-card, .tool-card, .tutorial-card, .workflow-step, .faq-item { border-radius: 22px; }
  .quick-card { grid-template-columns: auto 1fr; }
  .quick-arrow { display: none; }
  .hero h1 { font-size: 42px; }
  .section-heading h2 { font-size: 30px; }
  .faq-item summary { font-size: 18px; }
}