/* 糖心Vlog 视频导航 — tlog.homes */
:root {
  --brand-yellow: #ffd54f;
  --brand-orange: #ff8a3d;
  --brand-magenta: #e91e8c;
  --brand-pink: #ff4d9a;
  --brand-purple: #7b2d8e;
  --brand-deep: #1a0a14;
  --text: #2a1a22;
  --text-muted: #5c4a54;
  --bg: #fff8fb;
  --bg-soft: #fff0f5;
  --surface: #ffffff;
  --border: rgba(233, 30, 140, 0.12);
  --shadow: 0 12px 40px rgba(123, 45, 142, 0.08);
  --radius: 16px;
  --max: 1120px;
  --header-h: 68px;
  --grad: linear-gradient(135deg, #ffd54f 0%, #ff8a3d 28%, #e91e8c 68%, #7b2d8e 100%);
  --grad-soft: linear-gradient(160deg, #fff8e7 0%, #ffe4f0 45%, #f3e5ff 100%);
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", "Songti 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);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(255, 213, 79, 0.28), transparent 50%),
    radial-gradient(ellipse 60% 40% at 90% 0%, rgba(233, 30, 140, 0.15), transparent 45%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(123, 45, 142, 0.08), transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
}

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

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

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  backdrop-filter: blur(14px);
  background: rgba(255, 248, 251, 0.88);
  border-bottom: 1px solid var(--border);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 700;
  flex-shrink: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(233, 30, 140, 0.25);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.25rem;
}

.nav a {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.35rem 0;
  position: relative;
}

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

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

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 10px;
  border-radius: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 6px 0;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  padding: 3.5rem 0 2.5rem;
  overflow: hidden;
}

.hero-panel {
  position: relative;
  border-radius: 24px;
  padding: 3rem 2.5rem;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad);
  opacity: 0.12;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.hero-brand img {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  box-shadow: 0 8px 28px rgba(233, 30, 140, 0.3);
  animation: float-logo 4s ease-in-out infinite;
}

@keyframes float-logo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.25;
  margin: 0 0 0.85rem;
  color: var(--brand-deep);
  font-weight: 700;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin: 0 0 1.5rem;
  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-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 24px rgba(233, 30, 140, 0.35);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.75);
  color: var(--brand-magenta);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--brand-purple);
}

/* Sections */
.section {
  padding: 2.75rem 0;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin: 0 0 0.5rem;
  color: var(--brand-deep);
}

.section-head p {
  margin: 0;
  color: var(--text-muted);
  max-width: 48em;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-magenta);
  margin-bottom: 0.35rem;
}

/* Prose */
.prose {
  font-size: 1.02rem;
  color: var(--text);
}

.prose p {
  margin: 0 0 1.1rem;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 1.75rem 0 0.75rem;
  color: var(--brand-deep);
}

.prose ul,
.prose ol {
  margin: 0 0 1.1rem;
  padding-left: 1.35rem;
}

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

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

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

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

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card figure {
  margin: 0;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #111;
}

.feature-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease;
}

.feature-card:hover img {
  transform: scale(1.03);
}

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

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

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

.cat-item {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s;
}

.cat-item:hover {
  transform: translateY(-3px);
  border-color: rgba(233, 30, 140, 0.35);
  color: inherit;
}

.cat-item figure {
  margin: 0;
  aspect-ratio: 3 / 5;
  overflow: hidden;
  background: #0d0d0d;
}

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

.cat-item .cat-label {
  padding: 0.85rem 1rem;
  font-weight: 600;
  text-align: center;
  font-size: 0.95rem;
}

/* Showcase row */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2rem;
  align-items: center;
}

.showcase.reverse {
  grid-template-columns: 1.15fr 1fr;
}

.showcase.reverse .showcase-media {
  order: 2;
}

.showcase-media {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  background: #111;
  animation: fade-up 0.8s ease both;
}

.showcase-media img {
  width: 100%;
  object-fit: cover;
  object-position: top;
  max-height: 560px;
}

.showcase-text h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 0.75rem;
}

.showcase-text p {
  color: var(--text-muted);
  margin: 0 0 0.85rem;
}

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

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

.vlog-strip figure {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
  aspect-ratio: 3 / 5;
}

.vlog-strip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

/* Info boxes / FAQ */
.info-list {
  display: grid;
  gap: 1rem;
}

.info-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.35rem;
}

.info-item h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.45rem;
}

.info-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Internal link panel */
.link-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}

.link-panel h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 1rem;
}

.link-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem 1.5rem;
}

.link-panel a {
  font-weight: 500;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 2.5rem 0 1.5rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 0.6rem;
}

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

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

.page-hero .breadcrumb a:hover {
  color: var(--brand-magenta);
}

.content-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem 2.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 2.5rem;
}

/* Error pages */
.error-page {
  min-height: calc(100vh - var(--header-h) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page .error-code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin: 0 0 0.5rem;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 0.75rem;
}

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

/* Footer */
.site-footer {
  margin-top: 2rem;
  background: var(--brand-deep);
  color: rgba(255, 255, 255, 0.82);
  padding: 2.5rem 0 1.5rem;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

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

.footer-brand span {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: #fff;
}

.site-footer h3 {
  font-size: 0.95rem;
  color: #fff;
  margin: 0 0 0.85rem;
  font-weight: 600;
}

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

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

.site-footer a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.92rem;
}

.site-footer a:hover {
  color: var(--brand-yellow);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* TOC nav on long pages */
.toc {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  columns: 2;
  gap: 1.5rem;
}

.toc li {
  margin-bottom: 0.3rem;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 960px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .showcase.reverse .showcase-media {
    order: 0;
  }

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

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

  .toc ol {
    columns: 1;
  }
}

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

  .nav {
    position: fixed;
    top: calc(var(--header-h) + var(--ads-h, 0px));
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255, 248, 251, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid var(--border);
  }

  .nav a::after {
    display: none;
  }

  .hero {
    padding: 1.75rem 0 1.25rem;
  }

  .hero-panel {
    padding: 1.75rem 1.25rem;
    border-radius: 18px;
  }

  .hero-brand img {
    width: 56px;
    height: 56px;
  }

  .feature-grid,
  .cat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

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

  .link-panel ul {
    grid-template-columns: 1fr;
  }

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

  .content-box {
    padding: 1.35rem 1.15rem;
  }

  .section {
    padding: 2rem 0;
  }

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

@media (max-width: 400px) {
  .feature-grid,
  .cat-grid {
    grid-template-columns: 1fr;
  }
}