:root {
  --bg: #08101f;
  --bg-2: #111833;
  --panel: rgba(15, 20, 42, 0.82);
  --panel-strong: rgba(21, 28, 56, 0.96);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f7f3ff;
  --muted: rgba(247, 243, 255, 0.72);
  --soft: rgba(247, 243, 255, 0.56);
  --accent: #ff8a5b;
  --accent-2: #8a68ff;
  --accent-3: #3fd0ff;
  --accent-4: #ffe08a;
  --success: #5be28d;
  --shadow: 0 24px 60px rgba(5, 7, 15, 0.44);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100vw - 32px));
  --font-body: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-display: "KaiTi", "Noto Serif SC", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(255, 138, 91, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(138, 104, 255, 0.22), transparent 30%),
    radial-gradient(circle at bottom center, rgba(63, 208, 255, 0.14), transparent 28%),
    linear-gradient(180deg, #060a14 0%, #0a1122 36%, #0b1122 100%);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.06) 0 2px, transparent 2px),
    radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px),
    radial-gradient(circle at 35% 70%, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px);
  background-size: 160px 160px;
  opacity: 0.35;
}

body::after {
  background:
    linear-gradient(135deg, rgba(255, 138, 91, 0.06), transparent 30%),
    linear-gradient(315deg, rgba(138, 104, 255, 0.06), transparent 30%);
  mix-blend-mode: screen;
  opacity: 0.9;
}

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

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 14px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  z-index: 1000;
}

.skip-link:focus {
  left: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(18px);
  background: rgba(8, 12, 25, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  width: var(--container);
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

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

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 10px 26px rgba(255, 138, 91, 0.24);
}

.brand-copy {
  display: grid;
  gap: 3px;
}

.brand-copy strong {
  font-size: 1.02rem;
  letter-spacing: 0.06em;
}

.brand-copy span {
  font-size: 0.82rem;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 10px 15px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
  transition: 0.25s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  display: block;
}

.page {
  width: var(--container);
  margin: 0 auto;
  padding: 28px 0 64px;
}

.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 28px;
  align-items: center;
  padding: 24px 0 18px;
}

.hero-copy,
.hero-visual,
.section-card,
.info-card,
.stat-card,
.faq-card,
.panel,
.download-strip {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 34px;
  position: relative;
  overflow: hidden;
}

.hero-copy::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 138, 91, 0.12), transparent 40%),
    radial-gradient(circle at right top, rgba(138, 104, 255, 0.18), transparent 34%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
}

.eyebrow i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: inline-block;
  box-shadow: 0 0 0 6px rgba(255, 138, 91, 0.12);
}

.hero-labels {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.82rem;
  white-space: nowrap;
}

.hero h1,
.page-title {
  margin: 18px 0 12px;
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 2.8rem;
  max-width: 14ch;
}

.page.content .hero h1 {
  font-size: 2.5rem;
}

.hero p,
.section-lead,
.content p,
.content li,
.faq-answer,
.muted {
  color: var(--muted);
  line-height: 1.9;
  font-size: 1rem;
}

.hero p {
  max-width: 60ch;
  margin: 0 0 20px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ffb36b);
  color: #fff;
  box-shadow: 0 14px 28px rgba(255, 138, 91, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.1);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
}

.chip::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-3), var(--accent));
  box-shadow: 0 0 0 5px rgba(63, 208, 255, 0.12);
}

.hero-visual {
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: auto -8% -24% -8%;
  height: 42%;
  background: radial-gradient(circle at 50% 0%, rgba(255, 138, 91, 0.3), transparent 68%);
  filter: blur(18px);
}

.hero-frame {
  display: grid;
  gap: 14px;
}

.hero-main-shot {
  aspect-ratio: 10 / 14;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 24px 40px rgba(1, 4, 12, 0.42);
  transform: rotate(-2deg);
}

.hero-main-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-pills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mini-shot {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.mini-shot img {
  width: 88px;
  height: 112px;
  border-radius: 16px;
  object-fit: cover;
}

.mini-shot strong,
.screen-caption strong,
.card-title,
.faq-question,
.download-title,
.section-title,
.panel h3,
.panel h4 {
  display: block;
  color: #fff;
  line-height: 1.35;
}

.mini-shot span,
.screen-caption span,
.card-desc,
.panel p,
.faq-answer,
.download-copy {
  color: var(--muted);
  line-height: 1.8;
}

.section {
  margin-top: 26px;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-body);
  font-size: clamp(1.7rem, 2vw, 2.4rem);
  margin: 0;
}

.section-lead {
  margin: 0;
  max-width: 64ch;
}

.stat-grid,
.feature-grid,
.module-grid,
.screen-grid,
.review-grid,
.guide-grid,
.faq-grid,
.faq-summary-grid {
  display: grid;
  gap: 16px;
}

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

.stat-card {
  padding: 22px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--muted);
  margin: 0;
}

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

.info-card,
.feature-card,
.module-card,
.review-card,
.faq-card,
.guide-step,
.panel {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.feature-card,
.module-card,
.review-card,
.guide-step {
  position: relative;
  overflow: hidden;
}

.feature-card::before,
.module-card::before,
.review-card::before,
.guide-step::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 138, 91, 0.08), transparent 45%);
  pointer-events: none;
}

.card-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(255, 138, 91, 0.24), rgba(138, 104, 255, 0.24));
  color: #fff;
  font-weight: 800;
}

.feature-card h3,
.module-card h3,
.review-card h3,
.guide-step h3,
.faq-card h3,
.panel h3,
.panel h4 {
  margin: 0 0 10px;
  font-size: 1.14rem;
}

.feature-card p,
.module-card p,
.review-card p,
.guide-step p,
.panel p {
  margin: 0;
}

.screen-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.screen-card {
  overflow: hidden;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.screen-card img {
  width: 100%;
  aspect-ratio: 9 / 13;
  object-fit: cover;
}

.screen-caption {
  padding: 14px 14px 16px;
}

.screen-caption strong {
  margin-bottom: 6px;
  font-size: 1rem;
}

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

.module-card {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.module-card .link {
  margin-top: 14px;
  color: var(--accent-4);
  font-weight: 700;
}

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

.quote {
  font-size: 1.03rem;
  line-height: 1.8;
  color: #fff;
}

.quote-by {
  margin-top: 14px;
  color: var(--soft);
  font-size: 0.92rem;
}

.quote-by time {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
}

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

.faq-short {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-short strong {
  display: block;
  margin-bottom: 8px;
}

.faq-short span {
  color: var(--muted);
  line-height: 1.7;
}

.download-strip {
  margin-top: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 26px;
  background:
    linear-gradient(135deg, rgba(255, 138, 91, 0.16), rgba(138, 104, 255, 0.14)),
    var(--panel-strong);
}

.download-title {
  margin-bottom: 8px;
  font-size: 1.35rem;
}

.download-copy {
  max-width: 58ch;
  margin: 0;
}

.site-footer {
  margin-top: 28px;
  padding: 22px 0 36px;
  color: var(--muted);
}

.footer-inner {
  width: var(--container);
  margin: 0 auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

.footer-links a {
  color: var(--accent-4);
}

.content {
  display: grid;
  gap: 22px;
}

.content-grid-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.panel {
  background: rgba(15, 20, 42, 0.72);
}

.panel ul,
.check-list,
.content ol,
.content ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.9;
}

.guide-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-step .step-num {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  margin-bottom: 14px;
  font-weight: 800;
}

.guide-media {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.guide-media figure {
  margin: 0;
  overflow: hidden;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.guide-media img {
  width: 100%;
  aspect-ratio: 9 / 13;
  object-fit: cover;
}

.guide-media figcaption {
  padding: 12px 14px 14px;
  color: var(--muted);
  line-height: 1.7;
}

.faq-grid {
  grid-template-columns: 1.08fr 0.92fr;
  align-items: start;
}

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

.details-list details {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 16px 18px;
}

.details-list summary {
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
}

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

.details-list summary::after {
  content: "+";
  float: right;
  color: var(--accent-4);
  font-weight: 800;
}

.details-list details[open] summary::after {
  content: "−";
}

.faq-answer {
  margin: 12px 0 0;
}

.faq-side .panel + .panel {
  margin-top: 16px;
}

.banner {
  padding: 24px;
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 138, 91, 0.12), rgba(138, 104, 255, 0.16)),
    rgba(15, 20, 42, 0.84);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.banner strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.12rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .hero,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .screen-grid,
  .module-grid,
  .review-grid,
  .stat-grid,
  .guide-media,
  .faq-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid,
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .header-inner,
  .page,
  .footer-inner {
    width: min(100vw - 18px, var(--container));
  }

  .site-header {
    position: sticky;
  }

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

  .nav-links {
    position: absolute;
    top: 76px;
    left: 9px;
    right: 9px;
    display: grid;
    gap: 8px;
    padding: 12px;
    border-radius: 24px;
    background: rgba(10, 14, 28, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
    transform: scale(0.98) translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: 0.25s ease;
  }

  .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1) translateY(0);
  }

  .hero-copy,
  .hero-visual,
  .section-card,
  .info-card,
  .stat-card,
  .faq-card,
  .panel,
  .download-strip,
  .module-card,
  .feature-card,
  .review-card,
  .guide-step {
    border-radius: 22px;
  }

  .hero-copy {
    padding: 22px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: 2.25rem;
  }

  .page.content .hero h1 {
    font-size: 2.05rem;
  }

  .cta-row,
  .section-header,
  .download-strip {
    flex-direction: column;
    align-items: stretch;
  }

  .feature-grid,
  .module-grid,
  .review-grid,
  .stat-grid,
  .screen-grid,
  .guide-grid,
  .guide-media,
  .faq-summary-grid,
  .content-grid-two {
    grid-template-columns: 1fr;
  }

  .hero-pills {
    grid-template-columns: 1fr;
  }

  .mini-shot {
    grid-template-columns: 76px 1fr;
  }

  .mini-shot img {
    width: 76px;
    height: 98px;
  }

  .nav {
    position: relative;
  }
}