:root {
  --bg: #0b0b0d;
  --bg-soft: #141418;
  --bg-card: #1a1a20;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f3f3f5;
  --muted: #a8a8b3;
  --accent: #e11d48;
  --accent-soft: #fb7185;
  --accent-dark: #9f1239;
  --gold: #f59e0b;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --max: 1180px;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", 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;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(225, 29, 72, 0.22), transparent),
    radial-gradient(ellipse 40% 30% at 100% 20%, rgba(245, 158, 11, 0.08), transparent),
    var(--bg);
  line-height: 1.75;
  min-height: 100vh;
}

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

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

a:hover {
  color: #fff;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  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(16px);
  background: rgba(11, 11, 13, 0.85);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
}

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: background 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, top 0.2s ease;
}

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

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

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

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

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

/* Hero */
.hero {
  position: relative;
  min-height: min(92vh, 760px);
  display: grid;
  align-items: end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 11, 13, 0.25) 0%, rgba(11, 11, 13, 0.55) 45%, rgba(11, 11, 13, 0.96) 100%),
    url("/home-featured.jpg") center/cover no-repeat;
  transform: scale(1.02);
  animation: heroZoom 18s ease-in-out infinite alternate;
}

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

.hero-content {
  position: relative;
  z-index: 1;
  padding: 5rem 0 3.5rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  line-height: 1.05;
  margin: 0 0 0.8rem;
  color: #fff;
  text-shadow: 0 8px 40px rgba(0, 0, 0, 0.55);
  animation: fadeUp 0.8s ease both;
}

.hero h1 {
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  font-weight: 600;
  margin: 0 0 0.85rem;
  color: #fff;
  max-width: 26ch;
  animation: fadeUp 0.9s 0.08s ease both;
}

.hero-lead {
  color: var(--muted);
  max-width: 42ch;
  margin: 0 0 1.6rem;
  font-size: 1.05rem;
  animation: fadeUp 1s 0.15s ease both;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: fadeUp 1.05s 0.22s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 10px 30px rgba(225, 29, 72, 0.35);
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.08);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

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

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02), transparent);
}

.section-head {
  margin-bottom: 2rem;
  max-width: 48rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin: 0 0 0.6rem;
  line-height: 1.25;
}

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

.eyebrow {
  display: inline-block;
  color: var(--accent-soft);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(225, 29, 72, 0.4);
}

.feature-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.15rem;
}

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

/* Showcase / screenshots */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.shot {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

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

.shot img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.shot figcaption {
  padding: 0.75rem 0.85rem 0.95rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.shot figcaption strong {
  display: block;
  color: #fff;
  margin-bottom: 0.2rem;
  font-size: 0.98rem;
}

/* Category chips */
.cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.cat-list a {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.92rem;
}

.cat-list a:hover {
  border-color: var(--accent);
  color: #fff;
  background: rgba(225, 29, 72, 0.15);
}

/* Two column */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.split-reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.split-media {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 560px;
  object-fit: cover;
  object-position: top;
  margin-inline: auto;
}

.split-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
  margin: 0 0 0.8rem;
}

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

.split-copy ul {
  margin: 0 0 1.2rem;
  padding-left: 1.15rem;
  color: var(--muted);
}

.split-copy li {
  margin-bottom: 0.4rem;
}

/* Article / long SEO text */
.prose {
  max-width: 52rem;
}

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  line-height: 1.3;
  margin: 2.2rem 0 0.8rem;
}

.prose h2 {
  font-size: 1.65rem;
}

.prose h3 {
  font-size: 1.25rem;
}

.prose p {
  color: #c9c9d1;
  margin: 0 0 1.05rem;
}

.prose ul,
.prose ol {
  color: #c9c9d1;
  margin: 0 0 1.2rem;
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.45rem;
}

.toc {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0 2rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.6rem;
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.toc a {
  color: var(--accent-soft);
}

/* FAQ */
.faq {
  display: grid;
  gap: 0.85rem;
}

.faq details {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.15rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq details[open] summary {
  color: var(--accent-soft);
  margin-bottom: 0.6rem;
}

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

/* Page hero (inner pages) */
.page-hero {
  padding: 3.2rem 0 1.5rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 80% at 10% 0%, rgba(225, 29, 72, 0.18), transparent);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0 0 0.6rem;
}

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

.breadcrumb {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.9rem;
}

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

.breadcrumb a:hover {
  color: #fff;
}

/* Legal */
.legal {
  padding: 2.5rem 0 4rem;
}

.legal h2 {
  font-size: 1.35rem;
  margin: 2rem 0 0.7rem;
}

.legal p,
.legal li {
  color: #c9c9d1;
}

.update-note {
  color: var(--gold);
  font-size: 0.9rem;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1rem;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  line-height: 1;
  background: linear-gradient(135deg, #fff, var(--accent-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0;
}

.error-page h1 {
  margin: 0.6rem 0;
  font-size: 1.6rem;
}

.error-page p {
  color: var(--muted);
  max-width: 28rem;
  margin: 0 auto 1.5rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: #08080a;
  padding: 3rem 0 2rem;
  margin-top: 2rem;
}

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

.site-footer h3 {
  font-family: var(--font-display);
  margin: 0 0 0.8rem;
  font-size: 1.15rem;
}

.site-footer p,
.site-footer li {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.45rem;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  color: #777;
  font-size: 0.85rem;
}

/* Vlog strip */
.vlog-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

.vlog-strip .shot img {
  aspect-ratio: 3 / 4;
}

/* Animations on scroll-ish hover presence */
.reveal {
  animation: fadeUp 0.7s ease both;
}

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

  .showcase-grid,
  .vlog-strip {
    grid-template-columns: 1fr 1fr;
  }

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

  .split-reverse .split-media {
    order: -1;
  }

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

  .split-media img {
    max-height: 480px;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: rgba(11, 11, 13, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem 1.25rem;
    flex-direction: column;
    gap: 0.85rem;
  }

  .nav-links.open {
    display: flex;
  }

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

  .hero {
    min-height: 78vh;
  }

  .hero-content {
    padding: 4rem 0 2.5rem;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}