:root {
  --bg: #f7f2ea;
  --bg-2: #eef1ff;
  --ink: #15203a;
  --muted: #5f6a82;
  --line: rgba(21, 32, 58, 0.12);
  --card: rgba(255, 255, 255, 0.82);
  --card-strong: rgba(255, 255, 255, 0.94);
  --accent: #ff6a5e;
  --accent-2: #7c4dff;
  --accent-3: #ffb347;
  --accent-4: #12b8a6;
  --shadow: 0 18px 50px rgba(18, 24, 40, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 179, 71, 0.26), transparent 18%),
    radial-gradient(circle at 88% 14%, rgba(124, 77, 255, 0.22), transparent 17%),
    radial-gradient(circle at 72% 82%, rgba(255, 106, 94, 0.15), transparent 16%),
    linear-gradient(180deg, #fffdf9 0%, #f7f2ea 34%, #eef1ff 100%);
  font-family: "Segoe UI Variable", "Segoe UI", "Microsoft YaHei UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(21, 32, 58, 0.04) 1px, transparent 1px);
  background-size: 18px 18px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.3), transparent 70%);
  opacity: 0.55;
  z-index: -1;
}

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

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

button,
a.button {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  z-index: 30;
}

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

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(247, 242, 234, 0.84);
  border-bottom: 1px solid rgba(21, 32, 58, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 84px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(124, 77, 255, 0.16), rgba(255, 106, 94, 0.16));
  box-shadow: inset 0 0 0 1px rgba(21, 32, 58, 0.08);
  overflow: hidden;
  flex: 0 0 auto;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong {
  font-size: 1.05rem;
  line-height: 1.1;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
}

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

.nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible,
.nav a.is-active {
  background: rgba(255, 255, 255, 0.84);
  color: var(--ink);
  transform: translateY(-1px);
}

.nav-cta {
  margin-left: 8px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(21, 32, 58, 0.14);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 14px;
  color: var(--ink);
}

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

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.page-main {
  padding: 28px 0 64px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 12px;
}

.hero-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  padding: 34px;
  border-radius: 34px;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.76)),
    linear-gradient(135deg, rgba(255, 179, 71, 0.16), rgba(124, 77, 255, 0.13));
  border: 1px solid rgba(21, 32, 58, 0.08);
  box-shadow: var(--shadow);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: auto -8% -18% auto;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 106, 94, 0.24), rgba(255, 106, 94, 0));
  filter: blur(2px);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(124, 77, 255, 0.1);
  color: #4e37b8;
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 4px rgba(255, 106, 94, 0.12);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.04em;
}

.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 60ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.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;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #ff8d4d 60%, #ffb347);
  box-shadow: 0 14px 28px rgba(255, 106, 94, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(21, 32, 58, 0.12);
  color: var(--ink);
}

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

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(21, 32, 58, 0.08);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.chip b {
  color: var(--ink);
}

.hero-aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.hero-stat {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stat-card {
  padding: 18px 16px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(21, 32, 58, 0.08);
  box-shadow: 0 10px 24px rgba(21, 32, 58, 0.06);
}

.stat-card strong {
  display: block;
  font-size: 1.35rem;
  line-height: 1.1;
}

.stat-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.88rem;
}

.hero-note {
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(17, 28, 60, 0.96), rgba(39, 44, 78, 0.9));
  color: #fff;
  box-shadow: 0 16px 34px rgba(17, 28, 60, 0.2);
}

.hero-note h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.hero-note ul {
  margin: 0;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.88);
}

.section {
  margin-top: 30px;
}

.section-card {
  padding: 28px;
  border-radius: 30px;
  background: var(--card);
  border: 1px solid rgba(21, 32, 58, 0.08);
  box-shadow: var(--shadow);
}

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

.section-head h2,
.section-head h3,
.section-head h4 {
  margin: 0;
  line-height: 1.15;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.15rem);
}

.section-head p {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #4e37b8;
  font-weight: 800;
  white-space: nowrap;
}

.feature-grid,
.review-grid,
.faq-grid,
.support-grid,
.gallery-grid,
.step-grid,
.quick-grid {
  display: grid;
  gap: 16px;
}

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

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

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

.feature-card,
.review-card,
.faq-card,
.support-card,
.gallery-card,
.step-card,
.quick-card {
  padding: 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(21, 32, 58, 0.08);
  box-shadow: 0 12px 28px rgba(21, 32, 58, 0.05);
}

.feature-card h3,
.support-card h3,
.review-card h3,
.step-card h3,
.faq-card summary,
.quick-card h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.25;
}

.feature-icon,
.support-icon,
.quick-icon {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 106, 94, 0.16), rgba(124, 77, 255, 0.14));
  color: var(--ink);
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.feature-card p,
.review-card p,
.support-card p,
.step-card p,
.quick-card p,
.faq-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

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

.gallery-grid {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
}

.gallery-hero {
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(17, 28, 60, 0.98), rgba(62, 54, 110, 0.95));
  color: #fff;
  box-shadow: 0 20px 42px rgba(17, 28, 60, 0.18);
}

.gallery-hero h3 {
  margin: 0;
  font-size: 1.55rem;
}

.gallery-hero p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.84);
}

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

.screen-card {
  padding: 14px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(21, 32, 58, 0.08);
  box-shadow: 0 12px 24px rgba(21, 32, 58, 0.07);
}

.screen-card img {
  width: 100%;
  max-width: 380px;
  margin-inline: auto;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 16px 32px rgba(21, 32, 58, 0.12);
}

.screen-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.screen-caption strong {
  color: var(--ink);
}

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

.deep-link {
  position: relative;
  overflow: hidden;
  padding: 24px;
  min-height: 180px;
  border-radius: 24px;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.82)),
    linear-gradient(135deg, rgba(255, 179, 71, 0.16), rgba(124, 77, 255, 0.12));
  border: 1px solid rgba(21, 32, 58, 0.08);
}

.deep-link::after {
  content: "";
  position: absolute;
  inset: auto -25px -25px auto;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 94, 0.22), rgba(255, 106, 94, 0));
}

.deep-link h3 {
  margin: 0;
  font-size: 1.25rem;
}

.deep-link p {
  margin: 10px 0 18px;
  color: var(--muted);
  max-width: 36ch;
}

.quote {
  padding: 18px 18px 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 251, 246, 0.95));
  border: 1px solid rgba(21, 32, 58, 0.08);
}

.quote p {
  margin: 0;
  font-size: 0.98rem;
}

.quote footer {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

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

.faq-card details {
  padding: 0;
}

.faq-card summary {
  list-style: none;
  cursor: pointer;
}

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

.faq-card summary::after {
  content: "+";
  float: right;
  font-size: 1.2rem;
  color: var(--accent-2);
  transition: transform 0.2s ease;
}

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

.faq-card[open],
.faq-card details[open] {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 242, 255, 0.98));
}

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

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

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 900;
  margin-bottom: 12px;
}

.check-list,
.bullet-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.check-list li,
.bullet-list li {
  margin: 6px 0;
}

.callout {
  padding: 18px 20px;
  border-radius: 20px;
  border-left: 5px solid var(--accent);
  background: rgba(255, 250, 246, 0.9);
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 16px;
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.timeline-item {
  position: relative;
  padding: 18px 18px 18px 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(21, 32, 58, 0.08);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 26px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(124, 77, 255, 0.1);
}

.timeline-item h3 {
  margin: 0;
}

.footer {
  margin-top: 38px;
  padding: 28px 0 38px;
}

.footer-inner {
  padding: 24px 26px;
  border-radius: 28px;
  background: rgba(17, 28, 60, 0.96);
  color: rgba(255, 255, 255, 0.92);
  box-shadow: 0 20px 46px rgba(17, 28, 60, 0.18);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: start;
}

.footer h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: #fff;
}

.footer p,
.footer li {
  color: rgba(255, 255, 255, 0.78);
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: #fff;
  font-weight: 700;
}

.disclaimer {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.94rem;
}

.copyright {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.88rem;
}

.jsonld {
  display: none;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

.sticky-download {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 25;
  display: none;
}

.sticky-download .btn {
  box-shadow: 0 14px 30px rgba(255, 106, 94, 0.24);
}

.page-title {
  margin: 0 0 10px;
  font-size: clamp(1.85rem, 4vw, 3rem);
  line-height: 1.08;
}

.page-lead {
  margin: 0;
  max-width: 70ch;
  color: var(--muted);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
}

.side-note {
  position: sticky;
  top: 106px;
  align-self: start;
  padding: 20px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(21, 32, 58, 0.08);
}

.side-note h3 {
  margin: 0 0 10px;
}

.side-note a {
  display: block;
  margin-top: 10px;
  color: #4e37b8;
  font-weight: 800;
}

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

.article p {
  margin: 0;
  color: var(--muted);
}

.article h2 {
  margin: 0 0 8px;
  font-size: 1.3rem;
}

.article section {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(21, 32, 58, 0.08);
}

.article ul,
.article ol {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.article li {
  margin: 6px 0;
}

.mini-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.mini-links a {
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(124, 77, 255, 0.1);
  color: #4e37b8;
  font-weight: 800;
}

.accordion {
  display: grid;
  gap: 14px;
}

.accordion details {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(21, 32, 58, 0.08);
  padding: 18px 20px;
}

.accordion summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

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

.accordion summary::after {
  content: "+";
  float: right;
  color: var(--accent-2);
}

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

.accordion p {
  margin: 10px 0 0;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-panel,
  .gallery-grid,
  .content-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .side-note {
    position: static;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 84px;
    display: grid;
    gap: 6px;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(21, 32, 58, 0.08);
    box-shadow: var(--shadow);
    transform-origin: top right;
    transform: scale(0.98);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

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

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

  .nav-cta {
    margin-left: 0;
  }

  .feature-grid,
  .review-grid,
  .support-grid,
  .faq-grid,
  .step-grid,
  .deep-links,
  .screen-grid,
  .quick-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-panel {
    padding: 24px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    min-height: 76px;
  }

  .brand-text span {
    display: none;
  }

  .hero {
    padding-top: 18px;
  }

  .hero-panel,
  .section-card {
    padding: 18px;
    border-radius: 22px;
  }

  .hero h1 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero p,
  .page-lead {
    font-size: 0.98rem;
  }

  .sticky-download {
    display: block;
  }
}