:root {
  --bg: #090b14;
  --bg-2: #0f1428;
  --panel: rgba(15, 20, 40, 0.84);
  --panel-2: rgba(23, 30, 58, 0.92);
  --line: rgba(255, 255, 255, 0.09);
  --text: #f5f7ff;
  --muted: #c6cce8;
  --soft: #9ea7ca;
  --accent: #ff6b8b;
  --accent-2: #7b5cff;
  --accent-3: #ffb24d;
  --success: #2dc8a9;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --radius: 28px;
  --radius-sm: 18px;
  --content: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 107, 139, 0.18), transparent 28%),
    radial-gradient(circle at 80% 8%, rgba(123, 92, 255, 0.16), transparent 26%),
    radial-gradient(circle at 75% 82%, rgba(255, 178, 77, 0.12), transparent 24%),
    linear-gradient(180deg, #0b1020 0%, #090b14 100%);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.page {
  position: relative;
  min-height: 100vh;
  overflow: clip;
}

.page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.28), transparent 70%);
  opacity: 0.32;
  z-index: 0;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 32px), var(--content));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 9, 18, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 84px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(123, 92, 255, 0.26);
}

.brand strong {
  display: block;
  font-size: 1.02rem;
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.brand span {
  display: block;
  margin-top: 2px;
  font-size: 0.86rem;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav a {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  transition: 0.2s ease;
}

.nav a:hover,
.nav a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.btn,
.link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover,
.link-btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 18px 36px rgba(123, 92, 255, 0.26);
}

.btn-secondary {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.btn-small {
  min-height: 42px;
  padding-inline: 18px;
  font-size: 0.95rem;
}

.hero {
  padding: 36px 0 22px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 28px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.92rem;
}

.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 0 0 6px rgba(255, 107, 139, 0.12);
}

.hero h1,
.page-title h1 {
  margin: 0;
  font-size: clamp(2.4rem, 4vw, 4.7rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.hero p,
.page-title p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.86;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.point {
  padding: 14px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.point strong {
  display: block;
  font-size: 1.05rem;
}

.point span {
  display: block;
  margin-top: 6px;
  color: var(--soft);
  font-size: 0.92rem;
  line-height: 1.45;
}

.hero-visual,
.preview-stage {
  position: relative;
}

.hero-visual .glow,
.preview-stage .glow {
  position: absolute;
  inset: auto;
  border-radius: 50%;
  filter: blur(18px);
  pointer-events: none;
}

.hero-visual .glow.one {
  width: 200px;
  height: 200px;
  top: -18px;
  right: 14px;
  background: rgba(255, 107, 139, 0.2);
}

.hero-visual .glow.two {
  width: 180px;
  height: 180px;
  left: 16px;
  bottom: 38px;
  background: rgba(123, 92, 255, 0.18);
}

.glass {
  background: linear-gradient(180deg, rgba(20, 26, 50, 0.92), rgba(15, 20, 38, 0.78));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 22px;
}

.hero-card .hero-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.hero-card .hero-card-top img {
  width: 72px;
  height: 72px;
  border-radius: 22px;
}

.hero-card .hero-card-top strong {
  display: block;
  font-size: 1.2rem;
}

.hero-card .hero-card-top span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.55;
}

.hero-grid .hero-card {
  overflow: hidden;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.mini {
  padding: 14px 14px 15px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.mini strong {
  display: block;
  font-size: 0.98rem;
}

.mini span {
  display: block;
  margin-top: 6px;
  color: var(--soft);
  font-size: 0.9rem;
  line-height: 1.45;
}

.section {
  padding: 24px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.section-head h2,
.section-head h3 {
  margin: 0;
  font-size: clamp(1.55rem, 2vw, 2.2rem);
}

.section-head p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.92rem;
}

.badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric {
  padding: 20px;
}

.metric strong {
  display: block;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.grid-3,
.grid-4,
.preview-grid,
.testimonial-grid,
.faq-grid {
  display: grid;
  gap: 16px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature,
.module-card,
.testimonial,
.faq-preview,
.content-card,
.step-card,
.tool-card,
.note-card {
  padding: 20px;
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.feature h3,
.module-card h3,
.testimonial h3,
.content-card h3,
.step-card h3,
.tool-card h3,
.note-card h3 {
  margin: 0;
  font-size: 1.08rem;
}

.feature p,
.module-card p,
.testimonial p,
.content-card p,
.step-card p,
.tool-card p,
.note-card p,
.faq-preview p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.feature .tag,
.content-card .tag,
.step-card .tag,
.tool-card .tag,
.note-card .tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--soft);
  font-size: 0.84rem;
  letter-spacing: 0.03em;
}

.preview-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.preview-card {
  padding: 16px;
  border-radius: 24px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.preview-card strong {
  display: block;
  margin-top: 14px;
  font-size: 1rem;
}

.preview-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.92rem;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.module-card {
  position: relative;
  overflow: hidden;
}

.module-card::after {
  content: "";
  position: absolute;
  inset: auto -30px -30px auto;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 139, 0.2), transparent 70%);
  pointer-events: none;
}

.module-card a {
  display: inline-flex;
  margin-top: 16px;
  color: #fff;
  font-weight: 700;
}

.module-card a::after {
  content: "→";
  margin-left: 8px;
}

.testimonial {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.testimonial cite {
  color: var(--soft);
  font-style: normal;
  font-size: 0.92rem;
}

.quote {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.faq-preview,
.faq-item {
  overflow: hidden;
}

.faq-preview h3,
.faq-item summary {
  margin: 0;
  font-size: 1.02rem;
}

.faq-preview-grid {
  display: grid;
  gap: 12px;
}

.faq-preview-grid a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.faq-preview-grid a span {
  color: var(--muted);
}

.download-cta {
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
}

.download-cta h2,
.download-cta p {
  margin: 0;
}

.download-cta p {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.8;
}

.footnote {
  margin: 18px 0 0;
  color: var(--soft);
  font-size: 0.92rem;
  line-height: 1.7;
}

.content-wrap {
  padding: 34px 0 28px;
}

.page-title {
  padding: 34px 0 10px;
}

.page-title .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 16px;
}

.stack {
  display: grid;
  gap: 16px;
}

.step-card {
  min-height: 100%;
}

.step-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}

.step-card h3 {
  margin-top: 14px;
}

.step-card ul,
.tool-card ul,
.note-card ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tool-card {
  min-height: 100%;
}

.tool-card .icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  margin-bottom: 12px;
  color: #fff;
  font-weight: 700;
}

.note-card {
  margin-top: 16px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  width: 34px;
  height: 34px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 1.1rem;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-answer {
  padding: 0 20px 18px;
  color: var(--muted);
  line-height: 1.85;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--soft);
  font-size: 0.92rem;
}

.breadcrumbs a {
  color: var(--muted);
}

.breadcrumbs span::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, 0.24);
}

.footer {
  margin-top: 34px;
  padding: 24px 0 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--soft);
}

.footer .shell {
  display: grid;
  gap: 10px;
}

.footer strong {
  color: var(--text);
}

.footer p {
  margin: 0;
  line-height: 1.85;
}

.footer .disclaimer {
  color: #f0d5da;
}

.surface {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 1080px) {
  .hero-grid,
  .content-grid,
  .download-cta {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .preview-grid,
  .module-grid,
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3,
  .tool-grid,
  .hero-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .shell {
    width: min(calc(100% - 24px), var(--content));
  }

  .topbar .shell {
    position: relative;
    min-height: 76px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px;
    border-radius: 24px;
    background: rgba(10, 13, 24, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
  }

  .topbar.is-open .nav {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
  }

  .hero,
  .content-wrap {
    padding-top: 22px;
  }

  .hero-points,
  .grid-3,
  .grid-4,
  .metrics,
  .preview-grid,
  .module-grid,
  .tool-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .hero h1,
  .page-title h1 {
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .hero-card,
  .metric,
  .feature,
  .module-card,
  .testimonial,
  .faq-preview,
  .content-card,
  .step-card,
  .tool-card,
  .note-card,
  .download-cta {
    padding: 18px;
  }

  .brand strong {
    font-size: 0.96rem;
  }

  .brand span {
    font-size: 0.78rem;
  }
}