:root {
  --brand: #e91e8c;
  --brand-deep: #c2186a;
  --brand-soft: #ffe4f1;
  --ink: #1a1218;
  --ink-muted: #5c4a55;
  --paper: #fff8fb;
  --line: rgba(233, 30, 140, 0.14);
  --shadow: 0 18px 48px rgba(194, 24, 106, 0.12);
  --radius: 18px;
  --max: 1120px;
  --font-display: "ZCOOL KuaiLe", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  background:
    radial-gradient(1200px 600px at 10% -10%, #ffd6ea 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #ffe9f4 0%, transparent 50%),
    linear-gradient(180deg, #fff5fa 0%, var(--paper) 40%, #ffffff 100%);
  min-height: 100vh;
}

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

a {
  color: var(--brand-deep);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--brand);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255, 248, 251, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 6px 16px rgba(233, 30, 140, 0.25);
}

.nav-toggle {
  display: none;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  color: var(--ink);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-toggle span {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, top 0.2s ease;
}

.nav-toggle span::before {
  top: -5px;
}

.nav-toggle span::after {
  top: 5px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.site-nav a {
  color: var(--ink-muted);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.25s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--brand-deep);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: clamp(420px, 78vh, 720px);
  display: grid;
  align-items: end;
  color: #fff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(26, 10, 20, 0.78) 0%, rgba(194, 24, 106, 0.45) 45%, rgba(26, 10, 20, 0.55) 100%),
    url("/screen-comic-serial.jpg") center / cover no-repeat;
  transform: scale(1.04);
  animation: heroZoom 18s ease-in-out infinite alternate;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 105, 180, 0.35), transparent 40%),
    linear-gradient(180deg, transparent 40%, rgba(20, 8, 16, 0.75) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 3.5rem;
  max-width: 720px;
  animation: fadeUp 0.9s ease both;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.hero-brand img {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.hero-brand span {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  text-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  font-weight: 700;
  line-height: 1.35;
}

.hero p {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.92);
  max-width: 36em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, #ff4fa3, #e91e8c 55%, #c2186a);
  color: #fff;
  box-shadow: 0 12px 28px rgba(233, 30, 140, 0.35);
}

.btn-primary:hover {
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.22);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 228, 241, 0.55), rgba(255, 255, 255, 0.2));
}

.section-head {
  margin-bottom: 1.75rem;
  max-width: 720px;
}

.section-head h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--ink);
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--brand-deep);
  font-size: 0.9rem;
  font-weight: 600;
}

.chip:hover {
  background: var(--brand-soft);
}

/* Feature showcase */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
}

.feature-item:hover {
  transform: translateY(-6px);
}

.feature-item img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: top center;
}

.feature-body {
  padding: 1rem 1.1rem 1.25rem;
}

.feature-body h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.feature-body p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* Media blocks */
.media-block {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
  margin: 2.5rem 0;
}

.media-block.reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.media-block.reverse .media-copy {
  order: 2;
}

.media-block.reverse .media-visual {
  order: 1;
}

.media-visual {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  background: #fff;
}

.media-visual img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top center;
}

.media-copy h3 {
  margin: 0 0 0.75rem;
  font-size: 1.45rem;
  font-family: var(--font-display);
}

.media-copy p {
  margin: 0 0 1rem;
  color: var(--ink-muted);
}

.media-copy ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-muted);
}

.media-copy li + li {
  margin-top: 0.35rem;
}

/* Long SEO article */
.seo-article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  box-shadow: var(--shadow);
}

.seo-article h2,
.seo-article h3 {
  font-family: var(--font-display);
  scroll-margin-top: 5rem;
}

.seo-article h2 {
  margin-top: 0;
  font-size: 1.7rem;
}

.seo-article h3 {
  margin-top: 2rem;
  font-size: 1.25rem;
  color: var(--brand-deep);
}

.seo-article p {
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.seo-article ul,
.seo-article ol {
  color: var(--ink-muted);
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
}

.toc {
  background: var(--brand-soft);
  border-radius: 16px;
  padding: 1rem 1.15rem;
  margin-bottom: 1.75rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
}

.toc a {
  font-weight: 500;
}

/* Stats strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat {
  text-align: center;
  padding: 1.1rem 0.75rem;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
}

.stat b {
  display: block;
  font-size: 1.5rem;
  color: var(--brand-deep);
  font-family: var(--font-display);
}

.stat span {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 3rem 0 1.5rem;
}

.page-hero h1 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.page-hero p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 42em;
}

.breadcrumb {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.breadcrumb a {
  color: var(--brand-deep);
}

.content-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow);
  margin-bottom: 3rem;
}

.content-panel h2 {
  margin-top: 1.75rem;
  font-size: 1.3rem;
  color: var(--brand-deep);
  font-family: var(--font-display);
}

.content-panel h2:first-child {
  margin-top: 0;
}

.content-panel p,
.content-panel li {
  color: var(--ink-muted);
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-card {
  max-width: 520px;
}

.error-card .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 6rem);
  line-height: 1;
  background: linear-gradient(135deg, #ff4fa3, #c2186a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
}

.error-card h1 {
  margin: 0 0 0.75rem;
  font-size: 1.6rem;
}

.error-card p {
  color: var(--ink-muted);
  margin: 0 0 1.5rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  background: linear-gradient(180deg, #2a1522, #1a0f16);
  color: rgba(255, 255, 255, 0.82);
  padding: 2.75rem 0 1.75rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer h3 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  color: #fff;
  font-size: 1.1rem;
}

.site-footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.78);
}

.site-footer a:hover {
  color: #ffb6d9;
}

.footer-links {
  display: grid;
  gap: 0.45rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.1rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: space-between;
}

/* Animations */
@keyframes heroZoom {
  from { transform: scale(1.02); }
  to { transform: scale(1.08); }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  animation: fadeUp 0.8s ease both;
}

/* Mobile */
@media (max-width: 960px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .media-block,
  .media-block.reverse {
    grid-template-columns: 1fr;
  }

  .media-block.reverse .media-copy,
  .media-block.reverse .media-visual {
    order: initial;
  }

  .stat-strip {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    z-index: 60;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0.75rem 0.75rem;
    background: rgba(255, 248, 251, 0.98);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
    position: absolute;
  }

  .site-nav a {
    padding: 0.65rem 0.35rem;
  }

  .header-inner {
    flex-wrap: nowrap;
  }

  .hero {
    min-height: 560px;
  }

  .hero-content {
    padding: 3.5rem 0 2.5rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3rem 0;
  }

  .media-visual img {
    aspect-ratio: 3 / 3.6;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg,
  .reveal,
  .hero-content {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}