/* 糖心Vlog - tlog.lol */
:root {
  --bg: #0a0a0c;
  --bg-elev: #141418;
  --bg-card: #1a1a20;
  --border: #2a2a32;
  --text: #f2f2f5;
  --text-muted: #9a9aa8;
  --accent: #e83e8c;
  --accent-2: #ff6b35;
  --accent-3: #ffc107;
  --gradient: linear-gradient(135deg, #ffc107 0%, #ff6b35 45%, #e83e8c 100%);
  --radius: 12px;
  --max: 1120px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(232, 62, 140, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(255, 107, 53, 0.12), transparent),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(255, 193, 7, 0.06), transparent);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-2); }
ul, ol { padding-left: 1.25rem; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.35;
  font-weight: 700;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  flex-shrink: 0;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.logo-sub {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  color: var(--text-muted);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.92rem;
  white-space: nowrap;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--bg-card);
}

.nav-toggle {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

/* Hero */
.hero {
  position: relative;
  padding: 3.5rem 0 3rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--accent-3);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

.hero h1 span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
  max-width: 36em;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform .2s, opacity .2s;
}

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

.btn-primary {
  background: var(--gradient);
  color: #111;
}

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

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-visual {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  animation: fadeUp 0.8s ease both;
}

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

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,12,0.7) 0%, transparent 40%);
  pointer-events: none;
}

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

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

/* Sections */
.section {
  padding: 3.5rem 0;
}

.section-head {
  margin-bottom: 2rem;
  max-width: 40em;
}

.section-head h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 0.6rem;
}

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

.section-alt {
  background: rgba(20, 20, 24, 0.55);
  border-block: 1px solid var(--border);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s, transform .25s;
  animation: fadeUp 0.6s ease both;
}

.feature-card:hover {
  border-color: rgba(232, 62, 140, 0.45);
  transform: translateY(-4px);
}

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

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

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
  font-family: var(--font);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.cat-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 3/4;
  animation: fadeUp 0.7s ease both;
}

.cat-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform .4s;
}

.cat-item:hover img { transform: scale(1.05); }

.cat-item .label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.5rem 0.85rem 0.85rem;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Content / article */
.prose {
  max-width: 48em;
}

.prose h2 {
  font-size: 1.45rem;
  margin: 2.25rem 0 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.prose h3 {
  font-size: 1.15rem;
  margin: 1.6rem 0 0.6rem;
  color: #ffd6e8;
}

.prose p {
  margin-bottom: 1rem;
  color: #d4d4dc;
}

.prose ul, .prose ol {
  margin-bottom: 1rem;
  color: #d4d4dc;
}

.prose li { margin-bottom: 0.35rem; }

.prose strong { color: var(--text); }

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

.toc h2 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  border: none;
  padding: 0;
  font-family: var(--font);
}

.toc ol {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.toc a { color: var(--text-muted); }
.toc a:hover { color: var(--accent); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 1.25rem 0;
}

.shot img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  object-position: top;
}

.shot figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-elev);
}

.highlight-box {
  background: linear-gradient(135deg, rgba(232,62,140,0.12), rgba(255,107,53,0.08));
  border: 1px solid rgba(232, 62, 140, 0.35);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0;
}

.highlight-box h3 {
  margin-top: 0;
  color: var(--accent-3);
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  counter-reset: step;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient);
  color: #111;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
  font-family: var(--font);
}

.step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* FAQ */
.faq details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.65rem;
  padding: 0.9rem 1.1rem;
}

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

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

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

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

.faq details p {
  margin-top: 0.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Page hero (inner) */
.page-hero {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.page-hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 40em;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

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

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

.error-page .code {
  font-size: clamp(4rem, 15vw, 7rem);
  font-family: var(--font-display);
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 0.5rem;
  animation: floatSoft 3.5s ease-in-out infinite;
}

.error-page h1 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  background: #08080a;
  padding: 2.5rem 0 1.5rem;
}

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

.footer-brand .logo { margin-bottom: 0.75rem; }

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 28em;
}

.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
  font-family: var(--font);
}

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

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

.footer-col a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.age-notice {
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 0.5rem;
}

/* Related links */
.related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.related a {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.related a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Mobile */
@media (max-width: 900px) {
  .hero-grid,
  .two-col,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

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

  .hero-visual {
    max-width: 360px;
    margin-inline: auto;
  }

  .hero-visual img {
    aspect-ratio: 3/4;
  }

  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(10, 10, 12, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem 1rem;
    gap: 0.25rem;
  }

  .nav.open { display: flex; }

  .nav a {
    padding: 0.75rem 1rem;
  }

  .site-header { position: relative; }
  .site-header.is-open { z-index: 200; }

  .header-inner { position: relative; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .cat-grid { gap: 0.65rem; }
  .hero { padding: 2rem 0 1.5rem; }
  .section { padding: 2.25rem 0; }
}