/* ============================================================
   黑料吃瓜反差 — RISO ZINE DESIGN SYSTEM
   Palette: 奶油纸 / 霓虹粉 / 电紫 / 酸黄 / 薄荷
   Style: 硬边框 + 硬投影 + 微旋转贴纸 + 网点纸纹
   ============================================================ */

:root{
  --cream:#FDF8F0;
  --cream-2:#F4ECE0;
  --paper:#FFFFFF;
  --ink:#181425;
  --pink:#FF3D7F;
  --violet:#6C4CF1;
  --acid:#E8FF59;
  --mint:#7EF0CB;
  --line:2px solid var(--ink);
  --shadow:6px 6px 0 var(--ink);
  --shadow-sm:4px 4px 0 var(--ink);
  --shadow-lg:10px 10px 0 var(--ink);
  --radius:18px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior:smooth; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    radial-gradient(rgba(24,20,37,0.075) 1px, transparent 1px),
    radial-gradient(rgba(255,61,127,0.06) 1px, transparent 1px);
  background-size:22px 22px, 22px 22px;
  background-position:0 0, 11px 11px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

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

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

a { color:inherit; }

/* ---------- 核心布局 ---------- */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section { padding:80px 0; position:relative; }

.section:nth-child(even) {
  background:var(--cream-2);
  border-top:2px dashed rgba(24,20,37,0.18);
  border-bottom:2px dashed rgba(24,20,37,0.18);
}

/* ---------- 导航 ---------- */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(253,248,240,0.86);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:var(--line);
}

.header-inner {
  display:flex; align-items:center; justify-content:space-between;
  height:68px; max-width:1200px; margin:0 auto; padding:0 24px;
}

.logo {
  display:flex; align-items:center; gap:10px;
  font-weight:900; font-size:1.2rem; letter-spacing:-0.02em;
  text-decoration:none; color:var(--ink);
}

.logo-icon {
  width:36px; height:36px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; font-weight:900; color:#fff;
  background:var(--pink);
  border:var(--line);
  box-shadow:3px 3px 0 var(--ink);
  transform:rotate(-7deg);
  transition:transform .25s cubic-bezier(.34,1.56,.64,1);
}
.logo:hover .logo-icon { transform:rotate(7deg) scale(1.06); }

.main-nav { display:flex; align-items:center; gap:26px; list-style:none; }

.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:700;
  color:var(--ink); position:relative; padding:4px 0;
  transition:0.2s;
}
.main-nav a::after {
  content:''; position:absolute; left:0; bottom:0;
  width:0; height:6px; background:var(--acid);
  z-index:-1; transition:width .25s ease;
  border-radius:2px;
}
.main-nav a:hover { transform:translateY(-1px); }
.main-nav a:hover::after { width:100%; }

.nav-cta {
  padding:9px 22px !important; border-radius:100px;
  color:#fff !important; font-weight:800 !important;
  background:var(--violet);
  border:var(--line);
  box-shadow:3px 3px 0 var(--ink);
  transition:.18s;
}
.nav-cta::after { display:none !important; }
.nav-cta:hover {
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 var(--ink);
}

.menu-toggle {
  display:none; flex-direction:column; align-items:center; justify-content:center;
  gap:4px; width:42px; height:42px; border-radius:12px;
  background:#fff; border:var(--line); box-shadow:3px 3px 0 var(--ink);
  cursor:pointer;
}
.menu-toggle span { display:block; width:18px; height:2.5px; background:var(--ink); border-radius:2px; }

/* ---------- 首页 Hero ---------- */
.hero {
  min-height:70vh; display:flex; align-items:center;
  padding:130px 0 80px; position:relative; overflow:hidden;
}

.hero::before {
  content:''; position:absolute; top:110px; right:-90px;
  width:320px; height:320px; border-radius:50%;
  background:var(--acid); opacity:.55; z-index:0;
  filter:blur(2px);
}
.hero::after {
  content:''; position:absolute; bottom:-70px; left:-60px;
  width:220px; height:220px; border-radius:44px;
  background:var(--mint); opacity:.5; transform:rotate(24deg); z-index:0;
}

.hero .container { position:relative; z-index:1; }

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

.hero-eyebrow {
  display:inline-block; font-size:0.78rem; font-weight:900;
  padding:6px 16px; border-radius:100px; margin-bottom:22px;
  background:var(--acid); color:var(--ink);
  border:var(--line); box-shadow:3px 3px 0 var(--ink);
  letter-spacing:0.18em; text-transform:uppercase;
  transform:rotate(-2.4deg);
}

.hero h1 {
  font-size:clamp(2.3rem, 6.2vw, 4.3rem);
  line-height:1.04; margin-bottom:22px;
  font-weight:900; letter-spacing:-0.035em;
}

.hero h1 em, .hero h1 .text-accent {
  font-style:normal;
  color:var(--violet);
  background:linear-gradient(transparent 62%, var(--acid) 62%);
  padding:0 4px;
}

.hero p {
  font-size:1.08rem; color:rgba(24,20,37,0.68);
  max-width:580px; margin-bottom:34px; font-weight:500;
}

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

.hero-image {
  border-radius:var(--radius); overflow:hidden;
  border:var(--line); box-shadow:var(--shadow-lg);
  transform:rotate(1.4deg); background:#fff;
}
.hero-image img { width:100%; height:auto; }

/* ---------- 按钮 ---------- */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 30px; border-radius:100px;
  font-weight:800; font-size:0.95rem; cursor:pointer;
  border:var(--line); text-decoration:none;
  box-shadow:var(--shadow-sm);
  transition:transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.btn:hover {
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--ink);
}
.btn:active { transform:translate(4px,4px); box-shadow:0 0 0 var(--ink); }

.btn-primary { background:var(--pink); color:#fff; }
.btn-primary:hover { background:#ff2a71; }

.btn-outline { background:#fff; color:var(--ink); border:var(--line); }
.btn-outline:hover { background:var(--acid); }

/* ---------- 标签 / 标题 ---------- */
.section-label {
  display:inline-flex; align-items:center; gap:8px;
  font-size:0.74rem; font-weight:900; letter-spacing:0.34em;
  text-transform:uppercase; color:var(--violet);
  margin-bottom:14px;
}
.section-label::before {
  content:''; width:10px; height:10px; background:var(--pink);
  border:2px solid var(--ink); border-radius:3px; display:inline-block;
  transform:rotate(12deg);
}

.section-title {
  font-size:clamp(1.7rem, 3.8vw, 2.6rem);
  font-weight:900; letter-spacing:-0.03em; line-height:1.15;
  margin-bottom:16px;
}

.section-desc {
  max-width:620px; color:rgba(24,20,37,0.66);
  margin-bottom:44px; font-weight:500;
}

.text-accent { color:var(--pink); }

/* ---------- 卡片网格 ---------- */
.cards-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:26px;
}

.category-card {
  border-radius:var(--radius); padding:28px;
  background:var(--paper); border:var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease, box-shadow .18s ease;
  position:relative;
}
.category-card:nth-child(3n+1) { transform:rotate(-0.7deg); }
.category-card:nth-child(3n+2) { transform:rotate(0.6deg); }

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

.card-icon {
  width:52px; height:52px; border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.35rem;
  border:var(--line); box-shadow:3px 3px 0 var(--ink);
  background:var(--acid);
}
.category-card:nth-child(2n) .card-icon { background:var(--mint); }
.category-card:nth-child(3n) .card-icon { background:#FFD9E6; }
.category-card:nth-child(4n) .card-icon { background:#DCD3FF; }

.category-card h3 { font-size:1.15rem; font-weight:900; margin-bottom:8px; letter-spacing:-0.01em; }
.category-card p { font-size:0.92rem; color:rgba(24,20,37,0.62); margin-bottom:16px; }

.card-link {
  font-weight:900; font-size:0.84rem; text-decoration:none;
  color:var(--violet); display:inline-flex; align-items:center; gap:6px;
  border-bottom:2px solid var(--acid); padding-bottom:2px;
  transition:.2s;
}
.card-link:hover { gap:12px; color:var(--pink); }

/* ---------- 特性块 ---------- */
.feature-block {
  display:grid; grid-template-columns:1fr 1fr;
  gap:56px; align-items:center;
}

.feature-image {
  border-radius:var(--radius); overflow:hidden;
  border:var(--line); box-shadow:var(--shadow-lg);
  background:#fff; transform:rotate(-1.2deg);
}
.feature-image img { width:100%; height:auto; }

.feature-text h2 { font-size:clamp(1.6rem,3.4vw,2.2rem); font-weight:900; letter-spacing:-0.025em; margin-bottom:14px; }
.feature-text p { color:rgba(24,20,37,0.68); margin-bottom:20px; }

.feature-list { list-style:none; }
.feature-list li {
  padding:9px 0; display:flex; align-items:center; gap:12px;
  font-weight:600; font-size:0.96rem;
}
.feature-list li::before {
  content:'✓'; font-weight:900; font-size:0.72rem;
  color:#fff; background:var(--pink);
  border:2px solid var(--ink);
  width:22px; height:22px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  flex:0 0 22px; box-shadow:2px 2px 0 var(--ink);
}
.feature-list li:nth-child(2n)::before { background:var(--violet); }
.feature-list li:nth-child(3n)::before { background:#2BB98A; }

/* ---------- 数据条 ---------- */
.stats-bar {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:22px; text-align:center;
}

.stat-item {
  padding:28px 18px; border-radius:var(--radius);
  background:var(--paper); border:var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease, box-shadow .18s ease;
}
.stat-item:hover { transform:translate(-2px,-2px); box-shadow:var(--shadow); }

.stat-number {
  font-size:clamp(2rem,4vw,2.6rem); font-weight:900;
  letter-spacing:-0.04em; line-height:1;
  color:var(--violet);
}
.stat-item:nth-child(2) .stat-number { color:var(--pink); }
.stat-item:nth-child(3) .stat-number { color:#1DA97C; }
.stat-item:nth-child(4) .stat-number { color:#E8590C; }

.stat-label {
  font-size:0.86rem; color:rgba(24,20,37,0.6);
  margin-top:10px; font-weight:700; letter-spacing:0.06em;
}

/* ---------- 内容墙 ---------- */
.content-wall {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:26px;
}

.content-wall-item {
  border-radius:var(--radius); overflow:hidden;
  background:var(--paper); border:var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease, box-shadow .18s ease;
}
.content-wall-item:hover {
  transform:translate(-3px,-3px);
  box-shadow:var(--shadow-lg);
}
.content-wall-item img {
  width:100%; height:200px; object-fit:cover;
  border-bottom:var(--line);
  filter:saturate(1.08) contrast(1.03);
}
.content-wall-body { padding:22px; }
.content-wall-body h3 { font-size:1.05rem; font-weight:900; margin-bottom:8px; letter-spacing:-0.01em; }
.content-wall-body p { font-size:0.9rem; color:rgba(24,20,37,0.62); }
.content-wall-body .card-link { margin-top:14px; }

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

.faq-item {
  background:var(--paper); border:var(--line);
  border-radius:14px; margin-bottom:12px; overflow:hidden;
  cursor:pointer; box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease, transform .18s ease;
}
.faq-item:hover { transform:translate(-2px,-2px); box-shadow:var(--shadow); }

.faq-item .faq-question {
  padding:18px 22px; font-weight:800; font-size:1rem;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.4rem; font-weight:900; line-height:1;
  color:var(--pink); transition:transform .25s ease;
  flex:0 0 auto;
}
.faq-item.open .faq-question::after { transform:rotate(135deg); color:var(--violet); }

.faq-item .faq-answer {
  padding:0 22px 20px; display:none;
  color:rgba(24,20,37,0.68); font-size:0.94rem;
  border-top:2px dashed rgba(24,20,37,0.14);
  margin:0 22px; padding:16px 0 20px;
}
.faq-item.open { box-shadow:var(--shadow); }
.faq-item.open .faq-answer { display:block; }

/* ---------- CTA横幅 ---------- */
.cta-banner {
  padding:60px 28px; text-align:center;
  border-radius:24px; color:#fff;
  background:linear-gradient(122deg, var(--pink) 0%, #FF7A45 42%, var(--violet) 100%);
  border:var(--line);
  box-shadow:var(--shadow-lg);
  position:relative; overflow:hidden;
}
.cta-banner::before {
  content:''; position:absolute; top:-40px; left:-30px;
  width:160px; height:160px; border-radius:50%;
  background:rgba(232,255,89,0.35);
}
.cta-banner::after {
  content:''; position:absolute; bottom:-60px; right:-40px;
  width:200px; height:200px; border-radius:50%;
  background:rgba(255,255,255,0.12);
}
.cta-banner > * { position:relative; z-index:1; }

.cta-banner h2 {
  color:#fff; font-size:clamp(1.6rem,3.6vw,2.4rem);
  font-weight:900; letter-spacing:-0.03em; margin-bottom:14px;
}
.cta-banner p { color:rgba(255,255,255,0.9); margin:0 auto 28px; max-width:560px; }

.cta-banner .btn-primary {
  background:#fff; color:var(--ink);
  border:var(--line); box-shadow:var(--shadow-sm);
}
.cta-banner .btn-primary:hover { background:var(--acid); }

/* ---------- 页脚 ---------- */
.site-footer {
  padding:56px 0 28px;
  background:var(--cream-2);
  border-top:var(--line);
  color:var(--ink);
}

.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px;
}

.footer-brand { }
.footer-brand .logo { margin-bottom:14px; }
.footer-brand p {
  font-size:0.92rem; color:rgba(24,20,37,0.62);
  max-width:320px;
}

.footer-col h4 {
  font-size:0.78rem; font-weight:900; letter-spacing:0.22em;
  text-transform:uppercase; color:var(--violet); margin-bottom:16px;
}
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:10px; }
.footer-col a {
  text-decoration:none; font-size:0.92rem; font-weight:600;
  color:rgba(24,20,37,0.72); transition:.18s;
  border-bottom:2px solid transparent;
}
.footer-col a:hover { color:var(--pink); border-bottom-color:var(--acid); }

.footer-bottom {
  border-top:2px dashed rgba(24,20,37,0.2);
  margin-top:44px; padding-top:22px;
  text-align:center; font-size:0.84rem;
  color:rgba(24,20,37,0.55); font-weight:600;
  letter-spacing:0.04em;
}

/* ---------- 工具类 ---------- */
.text-center { text-align:center; }

.seo-description {
  max-width:620px; margin:0 auto 48px;
  color:rgba(24,20,37,0.66); font-weight:500;
}

.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

.text-center .section-desc,
.text-center .seo-description { margin-left:auto; margin-right:auto; }
.text-center .section-label { justify-content:center; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .feature-block { grid-template-columns:1fr; gap:36px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding:60px 0; }
  .hero { padding:110px 0 60px; min-height:auto; }
  .hero::before { width:200px; height:200px; right:-70px; top:80px; }

  .main-nav { display:none; }
  .menu-toggle { display:flex; }

  .main-nav.open {
    display:flex; flex-direction:column; align-items:flex-start;
    position:absolute; top:68px; left:0; width:100%;
    background:var(--cream); padding:22px 24px 26px;
    gap:16px; border-bottom:var(--line);
    box-shadow:0 12px 0 rgba(24,20,37,0.08);
  }
  .main-nav.open li { width:100%; }
  .main-nav.open a { display:block; font-size:1rem; }
  .main-nav.open .nav-cta { display:inline-block; margin-top:6px; }

  .feature-image { transform:rotate(0deg); }
  .category-card { transform:rotate(0deg) !important; }
}

@media (max-width: 480px) {
  .cards-grid, .content-wall, .stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .hero-buttons { flex-direction:column; align-items:stretch; }
  .hero-buttons .btn { justify-content:center; }
  .cta-banner { padding:44px 20px; border-radius:20px; }
  .section-title { letter-spacing:-0.02em; }
}