/* 糖心Vlog - vlogtx.biz */
:root {
  --brand: #e11d48;
  --brand-dark: #be123c;
  --brand-soft: #fff1f2;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --bg: #fafaf9;
  --card: #ffffff;
  --max: 1120px;
  --radius: 12px;
  --shadow: 0 8px 28px rgba(28, 25, 23, 0.08);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.logo span {
  background: linear-gradient(120deg, var(--brand), #fb7185);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 8px;
}

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

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(225, 29, 72, 0.12), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 10%, rgba(251, 113, 133, 0.15), transparent 50%),
    linear-gradient(180deg, #fff 0%, var(--brand-soft) 100%);
  padding: 56px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--brand);
  background: #fff;
  border: 1px solid #fecdd3;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 28px;
  max-width: 36em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #fb7185);
  color: #fff;
  box-shadow: 0 10px 24px rgba(225, 29, 72, 0.28);
}

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

.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--shadow);
  object-fit: cover;
  aspect-ratio: 16 / 11;
}

.hero-float {
  position: absolute;
  right: -8px;
  bottom: -16px;
  width: 42%;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 3px solid #fff;
}

/* Sections */
.section {
  padding: 64px 0;
}

.section-alt {
  background: #fff;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

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

.section-label {
  display: inline-block;
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.feature-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #f5f5f4;
}

.feature-card .body {
  padding: 18px 18px 20px;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.92rem;
}

/* Category chips */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cat-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
}

.cat-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.cat-item h3 {
  font-size: 0.98rem;
  padding: 12px 10px 4px;
}

.cat-item p {
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0 12px 14px;
}

/* Showcase */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.showcase-grid figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.showcase-grid img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.showcase-grid figure:hover img {
  transform: scale(1.04);
}

.showcase-grid figcaption {
  padding: 10px 12px;
  font-size: 0.88rem;
  color: var(--muted);
  text-align: center;
}

/* Content prose */
.prose {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 36px;
}

.prose h2 {
  font-size: 1.35rem;
  margin: 28px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.prose h3 {
  font-size: 1.1rem;
  margin: 20px 0 10px;
}

.prose p {
  margin-bottom: 14px;
  color: #44403c;
}

.prose ul,
.prose ol {
  margin: 0 0 16px 1.2em;
  color: #44403c;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 6px;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  position: relative;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 14px;
}

.step h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.step p {
  color: var(--muted);
  font-size: 0.92rem;
}

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.faq-item p {
  color: var(--muted);
  font-size: 0.94rem;
}

/* Page banner */
.page-banner {
  background:
    linear-gradient(135deg, rgba(225, 29, 72, 0.08), rgba(251, 113, 133, 0.12)),
    #fff;
  border-bottom: 1px solid var(--line);
  padding: 40px 0 32px;
}

.page-banner h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 8px;
}

.page-banner p {
  color: var(--muted);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 12px;
}

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

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

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding: 60px 0;
}

.error-code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand), #fb7185);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}

.error-page h1 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-page p {
  color: var(--muted);
  margin-bottom: 28px;
}

/* Footer */
.site-footer {
  background: #1c1917;
  color: #a8a29e;
  padding: 48px 0 28px;
  margin-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.site-footer h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.site-footer a {
  color: #a8a29e;
  display: block;
  padding: 4px 0;
  font-size: 0.9rem;
}

.site-footer a:hover {
  color: #fda4af;
}

.footer-bottom {
  border-top: 1px solid #292524;
  padding-top: 20px;
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}

/* Dual layout helper */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.split img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.split.reverse .text {
  order: 2;
}

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

/* Mobile */
@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 16px;
    gap: 4px;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
  }

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

  .hero-float {
    display: none;
  }

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

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

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

  .prose {
    padding: 22px 18px;
  }

  .split.reverse .text,
  .split.reverse .media {
    order: initial;
  }

  .section {
    padding: 48px 0;
  }

  .hero {
    padding: 36px 0 32px;
  }
}

@media (max-width: 480px) {
  .cat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-copy,
.hero-visual {
  animation: fadeUp 0.7s ease both;
}

.hero-visual {
  animation-delay: 0.12s;
}

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