:root {
  --bg: #12070a;
  --bg-elevated: #1c0c11;
  --surface: #271018;
  --surface-2: #32151f;
  --text: #fff6ef;
  --muted: #c9b0a2;
  --accent: #ff6a1a;
  --accent-soft: #ff9a4d;
  --gold: #f0c56d;
  --line: rgba(255, 246, 239, 0.1);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --nav-h: 68px;
  --font-display: "ZCOOL XiaoWei", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 106, 26, 0.22), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(240, 197, 109, 0.12), transparent 50%),
    linear-gradient(180deg, #18090d 0%, var(--bg) 40%, #0d0507 100%);
  line-height: 1.7;
  min-height: 100vh;
}

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

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

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(14, 6, 8, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  min-width: 0;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-desktop a {
  color: var(--muted);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--text);
  background: rgba(255, 106, 26, 0.12);
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1.25rem;
  font: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8a3d);
  color: #1a0804;
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(255, 106, 26, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: rgba(255, 106, 26, 0.45);
  color: var(--accent-soft);
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  cursor: pointer;
}

.menu-toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}



.menu-toggle[aria-expanded="true"] .label-open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .label-close {
  display: inline;
}

.nav-drawer {
  display: none;
  position: fixed;
  top: var(--nav-h);
  right: 0;
  width: min(86vw, 320px);
  height: calc(100vh - var(--nav-h));
  background: rgba(18, 7, 10, 0.98);
  border-left: 1px solid var(--line);
  padding: 1.25rem;
  z-index: 999;
  transform: translateX(104%);
  transition: transform 0.28s ease;
}

.nav-drawer.open {
  transform: translateX(0);
}

.nav-drawer a {
  display: block;
  color: var(--text);
  padding: 0.85rem 0.4rem;
  border-bottom: 1px solid var(--line);
}

.nav-drawer .drawer-auth {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.drawer-backdrop {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 998;
}

.drawer-backdrop.show {
  display: block;
}

main {
  padding-top: var(--nav-h);
}

.ads-slot {
  width: min(100% - 2rem, var(--max));
  margin: 0.75rem auto 0;
  padding: 0.6rem 0.8rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  color: #333;
}

.ads-slot .applist-title {
  color: #444;
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.02);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10, 4, 6, 0.25) 0%, rgba(10, 4, 6, 0.55) 45%, rgba(10, 4, 6, 0.92) 100%),
    linear-gradient(90deg, rgba(10, 4, 6, 0.72), transparent 55%);
}

.hero-content {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto 4.5rem;
  max-width: 640px;
  animation: riseIn 0.9s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1.05;
  margin: 0 0 0.8rem;
  color: #fff;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.hero p {
  margin: 0 0 1.4rem;
  color: #f3e2d6;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 106, 26, 0.05), transparent 40%);
}

.section-head {
  margin-bottom: 2rem;
  max-width: 680px;
}

.eyebrow {
  display: inline-block;
  color: var(--gold);
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  margin-bottom: 0.55rem;
  text-transform: uppercase;
}

.section-head h2,
.page-hero h1,
.content-block h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.2;
  margin: 0 0 0.7rem;
  font-weight: 400;
}

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

.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

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

.intro-visual {
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  animation: floatY 6s ease-in-out infinite;
}

.intro-visual img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.news-grid,
.core-grid,
.video-grid,
.cat-grid {
  display: grid;
  gap: 1.2rem;
}

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

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

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

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

.article-card,
.core-item,
.video-card,
.cat-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.article-card:hover,
.video-card:hover,
.cat-card:hover,
.core-item:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 106, 26, 0.35);
  box-shadow: var(--shadow);
}

.article-card img,
.video-card img,
.cat-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.article-card .body,
.video-card .body,
.cat-card .body {
  padding: 1rem 1.05rem 1.2rem;
}

.article-card h3,
.video-card h3,
.cat-card h3,
.core-item h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  line-height: 1.4;
}

.article-card p,
.video-card p,
.cat-card p,
.core-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.core-item {
  padding: 1.25rem;
  text-align: left;
}

.core-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 0.9rem;
}

.meta {
  display: inline-block;
  color: var(--gold);
  font-size: 0.78rem;
  margin-bottom: 0.4rem;
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
}

.faq-item button {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--text);
  font: inherit;
  padding: 1rem 1.15rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.faq-item button span:last-child {
  color: var(--accent-soft);
  flex-shrink: 0;
}

.faq-item .answer {
  display: none;
  padding: 0 1.15rem 1.1rem;
  color: var(--muted);
}

.faq-item.open .answer {
  display: block;
  animation: riseIn 0.35s ease;
}

.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(700px 280px at 80% 0%, rgba(255, 106, 26, 0.16), transparent 60%);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

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

.breadcrumb span {
  opacity: 0.5;
}

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

.content-block {
  max-width: 760px;
}

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

.content-block h2 {
  margin-top: 2rem;
}

.content-block h3 {
  margin-top: 1.4rem;
  font-size: 1.15rem;
}

.content-block ul {
  padding-left: 1.2rem;
}

.related {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.error-page {
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 5rem);
  margin: 0 0 0.5rem;
}

.error-page p {
  color: var(--muted);
  max-width: 480px;
  margin: 0 auto 1.4rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #0c0406;
  padding: 3rem 0 2rem;
}

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

.footer-brand {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
}

.footer-brand img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
}

.footer-brand p,
.site-footer p {
  color: var(--muted);
  margin: 0.4rem 0 0;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.form-card {
  max-width: 460px;
  margin: 0 auto;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
}

.form-card label {
  display: block;
  margin: 0.8rem 0 0.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.form-card input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  font: inherit;
}

.form-card .btn {
  width: 100%;
  margin-top: 1.2rem;
}

.form-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes heroDrift {
  from { transform: scale(1.02) translateY(0); }
  to { transform: scale(1.06) translateY(-1.5%); }
}

@media (max-width: 980px) {
  .news-grid,
  .video-grid,
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .core-grid,
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --nav-h: 60px;
  }

  .nav-desktop {
    display: none;
  }

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

  .nav-drawer {
    display: block;
  }

  .brand img {
    width: 34px;
    height: 34px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .hero {
    min-height: 78vh;
  }

  .hero-content {
    margin-bottom: 3rem;
  }

  .news-grid,
  .video-grid,
  .related-grid,
  .core-grid,
  .cat-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.2rem 0;
  }
}

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


/* icon-only menu toggle */
.menu-toggle .label-menu,
.menu-toggle .label-close,
.menu-toggle .label-open,
.menu-toggle .menu-label,
.menu-toggle .nav-toggle-label,
.menu-toggle [data-menu-label],
.menu-toggle [data-nav-label],
.nav-toggle .label-menu,
.nav-toggle .label-close,
.nav-toggle .menu-label,
.nav-toggle .nav-toggle-label,
.nav-toggle [data-nav-label],
.nav-toggle [data-menu-label] {
  display: none !important;
}
.menu-toggle,
.nav-toggle {
  gap: 0;
}