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

:root {
  --bg: #FFF8EC;
  --bg-alt: #FFEFD7;
  --paper: #FFFDF8;
  --ink: #1F2A2C;
  --red: #FF4B5C;
  --red-dark: #E63147;
  --lime: #B6F09C;
  --teal: #00C7B2;
  --yellow: #FFC233;
  --blue: #6E8DFF;
  --shadow: 6px 6px 0 var(--ink);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

html { scroll-behavior:smooth; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg);
  background-image: radial-gradient(var(--ink) 1px, transparent 1px);
  background-size: 30px 30px;
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

button { font-family: inherit; }
img { max-width: 100%; }
a { color: inherit; }

::selection { background: var(--yellow); color: var(--ink); }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg); border-left: 2px solid var(--ink); }
::-webkit-scrollbar-thumb { background: var(--red); border: 2px solid var(--ink); border-radius: 12px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; position: relative; scroll-margin-top: 80px; }
.section:nth-child(even) { background: rgba(255, 239, 215, 0.75); }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 236, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 2px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--red);
  color: #fff;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transform: rotate(-6deg);
  flex: none;
}

.main-nav { display: flex; align-items: center; gap: 6px; list-style: none; }

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 24px;
  border: 2px solid transparent;
  transition: all 0.2s;
}

.main-nav a:hover {
  background: var(--yellow);
  border-color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transform: translate(-1px, -1px);
}

.nav-cta {
  background: var(--red);
  color: #fff !important;
  border-color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  padding: 8px 20px;
}

.nav-cta:hover {
  background: var(--red-dark);
  color: #fff !important;
  box-shadow: 6px 6px 0 var(--ink);
  transform: translate(-2px, -2px);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--ink);
  background: var(--paper);
  border-radius: 12px;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 64px;
  padding: 150px 0 90px;
  position: relative;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 194, 51, 0.4), transparent 26%),
    radial-gradient(circle at 10% 86%, rgba(0, 199, 178, 0.22), transparent 28%);
}

.hero::before {
  content: "ACFUN";
  position: absolute;
  top: 8%;
  right: -3%;
  font-size: 20vw;
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: rgba(255, 75, 92, 0.08);
  white-space: nowrap;
  pointer-events: none;
  z-index: 0;
}

.hero-content { max-width: 700px; position: relative; z-index: 2; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 900;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 24px;
  background: var(--yellow);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transform: rotate(-2deg);
  letter-spacing: 1px;
}

.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  font-weight: 900;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.78;
  max-width: 580px;
  margin-bottom: 36px;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-image {
  flex: 0 1 44%;
  min-width: 320px;
  border-radius: var(--radius-lg);
  border: 3px solid var(--ink);
  background: var(--paper);
  box-shadow: 12px 12px 0 var(--red);
  transform: rotate(2deg);
  animation: bob 6s ease-in-out infinite;
  position: relative;
  z-index: 2;
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: calc(var(--radius-lg) - 6px);
}

.hero-image::before,
.hero-image::after {
  position: absolute;
  font-weight: 900;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  padding: 6px 16px;
  z-index: 3;
}

.hero-image::before {
  content: "弹幕不散";
  top: -18px;
  left: -18px;
  background: var(--yellow);
  transform: rotate(-6deg);
}

.hero-image::after {
  content: "鼻血不断";
  bottom: -14px;
  right: -16px;
  background: var(--teal);
  transform: rotate(4deg);
  font-size: 0.95rem;
}

@keyframes bob {
  0%, 100% { transform: rotate(2deg) translateY(0); }
  50% { transform: rotate(0deg) translateY(-8px); }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 14px;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: 5px 5px 0 var(--ink);
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-primary {
  background: var(--red);
  color: #fff;
  border-color: var(--ink);
}

.btn-primary:hover { background: var(--red-dark); color: #fff; }

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--yellow);
  box-shadow: 5px 5px 0 var(--ink);
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 2px;
  padding: 6px 16px;
  border: 2px solid var(--ink);
  border-radius: 30px;
  background: var(--paper);
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.section-desc {
  max-width: 640px;
  opacity: 0.72;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 6px 6px 0 var(--ink);
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
}

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 var(--teal);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--yellow);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  transform: rotate(-3deg);
}

.category-card:nth-child(even) .card-icon { background: var(--teal); }

.card-link {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--red);
  text-decoration: none;
  border-bottom: 3px solid var(--yellow);
  padding-bottom: 2px;
}

.card-link:hover { background: var(--yellow); }

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--yellow);
  overflow: hidden;
  transform: rotate(-1.5deg);
}

.feature-image img { width: 100%; display: block; object-fit: cover; }
.feature-text .section-title { text-align: left; }

.feature-list { list-style: none; margin-top: 16px; }

.feature-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  border-bottom: 2px dashed rgba(31, 42, 44, 0.2);
}

.feature-list li:last-child { border-bottom: none; }

.feature-list li::before {
  content: '✓';
  width: 26px;
  height: 26px;
  background: var(--lime);
  border: 2px solid var(--ink);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 900;
  box-shadow: 2px 2px 0 var(--ink);
  flex: none;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 20px;
  padding: 32px 20px;
  box-shadow: 6px 6px 0 var(--ink);
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-item:hover {
  transform: translateY(-4px) rotate(1deg);
  box-shadow: 8px 8px 0 var(--red);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--red);
}

.stat-label {
  font-size: 0.95rem;
  opacity: 0.8;
  margin-top: 8px;
  font-weight: 600;
}

.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border: 2px solid var(--ink);
  border-radius: 20px;
  overflow: hidden;
  background: var(--paper);
  box-shadow: 6px 6px 0 var(--ink);
  transition: transform 0.25s, box-shadow 0.25s;
}

.content-wall-item:hover {
  transform: translate(-3px, -3px) rotate(-0.5deg);
  box-shadow: 10px 10px 0 var(--teal);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
  display: block;
}

.content-wall-body { padding: 22px; }

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.content-wall-body p { opacity: 0.75; font-size: 0.95rem; }

.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 4px 4px 0 rgba(31, 42, 44, 0.15);
}

.faq-item.open { box-shadow: 6px 6px 0 var(--yellow); }

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 800;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--red);
  transition: transform 0.2s;
}

.faq-item.open .faq-question::after { content: '–'; }

.faq-item .faq-answer {
  padding: 0 22px 20px;
  display: none;
  opacity: 0.78;
  line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }

.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 30px;
  color: #fff;
  background-color: var(--red);
  background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 20px 20px;
  border: 3px solid var(--ink);
  box-shadow: 12px 12px 0 var(--ink);
  position: relative;
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: var(--yellow);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
}

.cta-banner .btn-primary:hover {
  background: var(--paper);
  color: var(--red-dark);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.site-footer {
  background: var(--bg-alt);
  border-top: 2px solid var(--ink);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand { font-weight: 900; font-size: 1.3rem; }

.footer-brand p {
  font-weight: 400;
  opacity: 0.7;
  max-width: 280px;
  margin-top: 14px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 900;
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  color: var(--ink);
  text-decoration: none;
  opacity: 0.7;
  padding: 4px 0;
  font-size: 0.92rem;
  transition: opacity 0.2s, padding-left 0.2s, color 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  padding-left: 4px;
  color: var(--red);
}

.footer-bottom {
  border-top: 2px solid rgba(31, 42, 44, 0.15);
  margin-top: 48px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.88rem;
  opacity: 0.75;
}

.text-accent { color: var(--red); }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.72; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

.marquee {
  background: var(--yellow);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 12px 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee-track {
  display: inline-block;
  animation: marquee 18s linear infinite;
}

.marquee-track span { margin: 0 28px; font-weight: 900; }

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg);
    padding: 20px;
    border-bottom: 2px solid var(--ink);
    box-shadow: 0 12px 0 rgba(31, 42, 44, 0.08);
  }

  .main-nav.open a { padding: 12px 16px; }

  .hero {
    flex-direction: column;
    padding-top: 120px;
    gap: 56px;
  }

  .hero-image { flex-basis: auto; width: 100%; }
  .section { padding: 64px 0; }
  .content-wall-item img { height: 180px; }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; }
  .header-inner { padding: 0 16px; }
  .hero { padding-top: 110px; padding-bottom: 60px; }
  .hero h1 { font-size: 2.2rem; }
  .cta-banner { padding: 48px 24px; }
}