/* ============================================================
   黑料网y — 设计系统 "RISO DOSSIER / 档案纸感"
   配色：米白纸 + 朱砂橘 + 芥末黄 + 墨黑字
   ============================================================ */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  background-color:#FAF6EC;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(255,92,31,0.10) 0%, transparent 42%),
    radial-gradient(circle at 88% 82%, rgba(255,210,63,0.16) 0%, transparent 46%),
    repeating-linear-gradient(0deg, rgba(22,24,29,0.035) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(90deg, rgba(22,24,29,0.035) 0 1px, transparent 1px 34px);
  color:#16181D;
  -webkit-font-smoothing:antialiased;
  line-height:1.65;
  scroll-behavior:smooth;
}

::selection { background:#FF5C1F; color:#fff; }

/* 滚动条 */
::-webkit-scrollbar { width:11px; }
::-webkit-scrollbar-track { background:#F1EADB; }
::-webkit-scrollbar-thumb { background:#16181D; border:3px solid #F1EADB; border-radius:8px; }
::-webkit-scrollbar-thumb:hover { background:#FF5C1F; }

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

.section { padding:80px 0; position:relative; }
.section:nth-child(even) {
  background:#F1EADB;
  border-top:2px solid #16181D;
  border-bottom:2px solid #16181D;
}
.section:nth-child(odd) { background:transparent; }

/* ============================================================
   导航 — 固定顶部
   ============================================================ */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(250,246,236,0.92);
  backdrop-filter:blur(10px) saturate(1.4);
  -webkit-backdrop-filter:blur(10px) saturate(1.4);
  border-bottom:2px solid #16181D;
}

.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:-0.5px;
  text-decoration:none; color:#16181D;
}
.logo-icon {
  width:36px; height:36px; border-radius:8px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; font-weight:900;
  background:#FF5C1F; color:#fff;
  border:2px solid #16181D;
  box-shadow:3px 3px 0 #16181D;
  transform:rotate(-4deg);
  transition:transform .25s cubic-bezier(.34,1.56,.64,1);
}
.logo:hover .logo-icon { transform:rotate(6deg) scale(1.06); }

.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:600;
  color:#16181D; transition:0.2s; position:relative; padding:4px 0;
}
.main-nav a::after {
  content:''; position:absolute; left:0; bottom:0;
  width:0; height:3px; background:#FFD23F;
  transition:width .28s cubic-bezier(.65,0,.35,1);
  z-index:-1;
}
.main-nav a:hover { color:#E23E20; }
.main-nav a:hover::after { width:100%; }

.nav-cta {
  padding:8px 20px; border-radius:8px;
  color:#fff !important; font-weight:700;
  background:#E23E20;
  border:2px solid #16181D;
  box-shadow:3px 3px 0 #16181D;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.nav-cta::after { display:none; }
.nav-cta:hover {
  background:#FF5C1F;
  transform:translate(-2px,-2px);
  box-shadow:5px 5px 0 #16181D;
}
.menu-toggle {
  display:none; background:#FFD23F; color:#16181D;
  border:2px solid #16181D; border-radius:8px;
  width:42px; height:38px; align-items:center; justify-content:center;
  font-size:1.1rem; cursor:pointer; box-shadow:2px 2px 0 #16181D;
}

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  min-height:70vh; display:flex; align-items:center;
  padding:140px 0 90px;
  position:relative;
  overflow:hidden;
}
.hero::before {
  content:''; position:absolute; right:-140px; top:60px;
  width:460px; height:460px; border-radius:50%;
  background:radial-gradient(circle, rgba(255,92,31,0.22) 0%, rgba(255,210,63,0.10) 55%, transparent 72%);
  filter:blur(6px); pointer-events:none;
}
.hero::after {
  content:''; position:absolute; left:-60px; bottom:-80px;
  width:280px; height:280px;
  background:repeating-linear-gradient(45deg, rgba(22,24,29,0.07) 0 6px, transparent 6px 14px);
  transform:rotate(12deg); pointer-events:none;
}
.hero-content { max-width:720px; position:relative; z-index:2; }

.hero-eyebrow {
  display:inline-block; font-size:0.8rem; font-weight:800;
  padding:5px 16px; border-radius:999px; margin-bottom:22px;
  background:#FFD23F; color:#16181D;
  border:2px solid #16181D;
  box-shadow:3px 3px 0 #16181D;
  letter-spacing:2px;
}

.hero h1 {
  font-size:clamp(2.4rem, 6vw, 4.4rem);
  line-height:1.08; margin-bottom:24px;
  font-weight:900; letter-spacing:-2px;
  color:#16181D;
}
.hero h1 em, .hero h1 strong {
  font-style:normal;
  background:linear-gradient(180deg, transparent 58%, #FFD23F 58%, #FFD23F 92%, transparent 92%);
  padding:0 4px;
}

.hero p {
  font-size:1.1rem; opacity:0.72; max-width:560px; margin-bottom:36px;
  font-weight:500;
}

.hero-buttons { display:flex; gap:14px; flex-wrap:wrap; }

.hero-image {
  border-radius:14px; overflow:hidden;
  border:2px solid #16181D;
  box-shadow:10px 10px 0 #16181D;
  background:#F1EADB;
}
.hero-image img { width:100%; height:auto; display:block; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 28px; border-radius:8px;
  font-weight:800; font-size:0.95rem; cursor:pointer;
  border:2px solid #16181D; text-decoration:none;
  transition:transform .18s ease, box-shadow .18s ease, background .2s ease, color .2s ease;
  box-shadow:4px 4px 0 #16181D;
  letter-spacing:0.4px;
}
.btn:hover { transform:translate(-2px,-2px); box-shadow:7px 7px 0 #16181D; }
.btn:active { transform:translate(1px,1px); box-shadow:2px 2px 0 #16181D; }

.btn-primary { background:#E23E20; color:#fff; box-shadow:4px 4px 0 #16181D; }
.btn-primary:hover { background:#FF5C1F; }

.btn-outline { background:transparent; border:2px solid #16181D; color:#16181D; box-shadow:4px 4px 0 #FFD23F; }
.btn-outline:hover { background:#FFD23F; box-shadow:7px 7px 0 #16181D; }

/* ============================================================
   标签 / 标题
   ============================================================ */
.section-label {
  display:inline-block; font-size:0.75rem; font-weight:900;
  letter-spacing:3px; margin-bottom:14px;
  padding:4px 12px; color:#16181D;
  background:#FFD23F;
  border:2px solid #16181D;
  border-radius:4px;
  transform:rotate(-1.5deg);
  text-transform:uppercase;
}
.section-label::before { content:'§ '; color:#E23E20; }

.section-title {
  font-size:clamp(1.7rem, 3.4vw, 2.6rem);
  margin-bottom:16px; font-weight:900;
  letter-spacing:-1.2px; line-height:1.15;
  color:#16181D;
}
.section-title::after {
  content:''; display:block; width:64px; height:6px;
  margin-top:14px; background:#FF5C1F;
  border-radius:3px;
}

.section-desc {
  max-width:600px; opacity:0.72; margin-bottom:44px;
  font-size:1.02rem; font-weight:500;
}

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

.category-card {
  border-radius:12px; padding:28px;
  border:2px solid #16181D;
  background:#FFFFFF;
  box-shadow:6px 6px 0 #16181D;
  transition:transform .22s cubic-bezier(.34,1.4,.64,1), box-shadow .22s ease, background .22s ease;
  position:relative; overflow:hidden;
}
.category-card::after {
  content:''; position:absolute; top:0; right:0;
  width:44px; height:44px;
  background:repeating-linear-gradient(45deg, #FFD23F 0 5px, transparent 5px 10px);
  opacity:0.55;
}
.category-card:hover {
  transform:translate(-4px,-4px);
  box-shadow:11px 11px 0 #E23E20;
  background:#FFFDF7;
}

.card-icon {
  width:48px; height:48px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.3rem;
  background:#F1EADB; color:#16181D;
  border:2px solid #16181D;
  box-shadow:3px 3px 0 #FF5C1F;
}

.card-link {
  font-weight:900; font-size:0.82rem; text-decoration:none;
  color:#E23E20; letter-spacing:1px; text-transform:uppercase;
  display:inline-flex; align-items:center; gap:6px;
  border-bottom:2px solid transparent;
  transition:0.2s;
}
.card-link::after { content:'→'; transition:transform .2s ease; }
.card-link:hover { color:#16181D; border-bottom-color:#FFD23F; }
.card-link:hover::after { transform:translateX(5px); }

/* ============================================================
   特性块
   ============================================================ */
.feature-block {
  display:grid; grid-template-columns:1fr 1fr;
  gap:56px; align-items:center;
}
.feature-image {
  border-radius:14px; overflow:hidden;
  border:2px solid #16181D;
  box-shadow:10px 10px 0 #FFD23F;
  background:#fff;
}
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { position:relative; }
.feature-text::before {
  content:'“'; position:absolute; top:-58px; left:-14px;
  font-size:6rem; line-height:1; color:rgba(255,92,31,0.16);
  font-weight:900; pointer-events:none;
}

.feature-list { list-style:none; margin-top:22px; }
.feature-list li {
  padding:9px 0; display:flex; align-items:flex-start; gap:12px;
  font-weight:600; border-bottom:1px dashed rgba(22,24,29,0.22);
}
.feature-list li::before {
  content:'✓'; font-weight:900; flex:0 0 24px;
  width:24px; height:24px; border-radius:6px;
  display:inline-flex; align-items:center; justify-content:center;
  background:#FFD23F; color:#16181D;
  border:2px solid #16181D; font-size:0.75rem;
  margin-top:2px;
}

/* ============================================================
   数据条
   ============================================================ */
.stats-bar {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:24px; text-align:center;
}
.stat-item {
  padding:28px 20px; border-radius:12px;
  border:2px solid #16181D;
  background:#FFFFFF;
  box-shadow:5px 5px 0 #16181D;
  transition:transform .2s ease, box-shadow .2s ease;
}
.stat-item:nth-child(2) { box-shadow:5px 5px 0 #FFD23F; }
.stat-item:nth-child(3) { box-shadow:5px 5px 0 #FF5C1F; }
.stat-item:hover { transform:translateY(-6px) rotate(-1deg); }

.stat-number {
  font-size:2.4rem; font-weight:900; color:#16181D;
  letter-spacing:-2px; line-height:1;
}
.stat-number::after { content:''; display:block; width:28px; height:4px; background:#FF5C1F; margin:12px auto 0; border-radius:2px; }
.stat-label { font-size:0.88rem; opacity:0.62; margin-top:12px; font-weight:700; letter-spacing:1px; }

/* ============================================================
   内容墙
   ============================================================ */
.content-wall {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));
  gap:26px;
}
.content-wall-item {
  border-radius:12px; overflow:hidden;
  border:2px solid #16181D;
  background:#fff;
  box-shadow:6px 6px 0 #16181D;
  transition:transform .22s cubic-bezier(.34,1.4,.64,1), box-shadow .22s ease;
}
.content-wall-item:hover {
  transform:translate(-4px,-4px);
  box-shadow:11px 11px 0 #FFD23F;
}
.content-wall-item img {
  width:100%; height:200px; object-fit:cover; display:block;
  border-bottom:2px solid #16181D;
  filter:saturate(1.05) contrast(1.03);
  transition:transform .5s ease;
}
.content-wall-item:hover img { transform:scale(1.04); }
.content-wall-body { padding:20px; }
.content-wall-body h3 { font-weight:900; letter-spacing:-0.4px; margin-bottom:8px; }
.content-wall-body p { font-size:0.92rem; opacity:0.7; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item {
  border:2px solid #16181D; border-radius:10px;
  margin-bottom:12px; overflow:hidden; cursor:pointer;
  background:#FFFFFF;
  box-shadow:4px 4px 0 #16181D;
  transition:transform .18s ease, box-shadow .18s ease;
}
.faq-item:hover { transform:translate(-2px,-2px); box-shadow:6px 6px 0 #FFD23F; }
.faq-item .faq-question {
  padding:18px 22px; font-weight:800;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
  color:#16181D;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.4rem; font-weight:900; color:#E23E20;
  line-height:1; transition:transform .25s ease;
}
.faq-item.open .faq-question::after { content:'−'; transform:rotate(180deg); }
.faq-item .faq-answer {
  padding:0 22px 18px; display:none; opacity:0.72;
  border-top:2px dashed rgba(22,24,29,0.18);
  padding-top:16px; margin-top:0;
}
.faq-item.open { background:#FFFDF5; box-shadow:6px 6px 0 #FF5C1F; }
.faq-item.open .faq-answer { display:block; }

/* ============================================================
   CTA横幅
   ============================================================ */
.cta-banner {
  padding:60px 28px; text-align:center; border-radius:14px;
  color:#fff;
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,0.07) 0 12px, transparent 12px 24px),
    linear-gradient(115deg, #FF5C1F 0%, #E23E20 55%, #C43114 100%);
  border:2px solid #16181D;
  box-shadow:10px 10px 0 #16181D;
  position:relative; overflow:hidden;
}
.cta-banner::before {
  content:''; position:absolute; inset:14px;
  border:2px dashed rgba(255,255,255,0.4); border-radius:8px;
  pointer-events:none;
}
.cta-banner h2 {
  color:#fff; font-size:clamp(1.6rem, 3.6vw, 2.5rem);
  font-weight:900; letter-spacing:-1px; margin-bottom:14px;
  position:relative;
}
.cta-banner p { position:relative; opacity:0.9; margin-bottom:26px; font-weight:500; }
.cta-banner .btn-primary {
  background:#fff; color:#16181D !important;
  border-color:#16181D;
  box-shadow:4px 4px 0 #16181D;
  position:relative;
}
.cta-banner .btn-primary:hover { background:#FFD23F; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  padding:56px 0 28px;
  background:#F1EADB;
  border-top:2px solid #16181D;
  color:#16181D;
  position:relative;
}
.site-footer::before {
  content:''; position:absolute; top:0; left:0; width:100%; height:6px;
  background:repeating-linear-gradient(90deg, #FF5C1F 0 24px, #FFD23F 24px 48px, #16181D 48px 72px);
}
.site-footer .container { padding-top:14px; }

.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px;
}
.footer-brand { max-width:340px; }
.footer-brand .logo { margin-bottom:14px; }
.footer-brand p { font-size:0.9rem; opacity:0.68; line-height:1.8; }

.footer-col h4 {
  font-size:0.82rem; font-weight:900; letter-spacing:2px;
  text-transform:uppercase; margin-bottom:16px;
  color:#E23E20;
}
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:10px; }
.footer-col a {
  text-decoration:none; color:#16181D; font-size:0.9rem; font-weight:600;
  opacity:0.75; transition:0.2s;
  border-bottom:1px solid transparent;
}
.footer-col a:hover { opacity:1; color:#E23E20; border-bottom-color:#E23E20; }

.footer-bottom {
  border-top:2px solid rgba(22,24,29,0.16);
  margin-top:40px; padding-top:20px; text-align:center;
  font-size:0.82rem; opacity:0.6; font-weight:600; letter-spacing:0.5px;
}

/* ============================================================
   工具类
   ============================================================ */
.text-accent { color:#E23E20; font-weight:900; }
.text-center { text-align:center; }
.text-center .section-title::after { margin-left:auto; margin-right:auto; }
.text-center .section-desc { margin-left:auto; margin-right:auto; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.72; font-weight:500; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .section { padding:60px 0; }
  .hero { padding:120px 0 70px; min-height:auto; }
  .hero h1 { letter-spacing:-1px; }
  .feature-block { grid-template-columns:1fr; gap:36px; }
  .feature-image { box-shadow:7px 7px 0 #FFD23F; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .footer-brand { grid-column:1 / -1; max-width:none; }

  .menu-toggle { display:flex; }
  .main-nav {
    display:none;
    position:absolute; top:68px; left:0; width:100%;
    background:#FAF6EC;
    border-bottom:2px solid #16181D;
    padding:20px 24px 26px;
    flex-direction:column;
    align-items:flex-start;
    gap:14px;
    box-shadow:0 10px 0 rgba(22,24,29,0.14);
  }
  .main-nav.open { display:flex; }
  .main-nav a { font-size:1rem; }
  .nav-cta { width:100%; text-align:center; justify-content:center; display:flex; }
}

@media (max-width: 480px) {
  .container { padding:0 18px; }
  .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; box-shadow:6px 6px 0 #16181D; }
  .section-title::after { width:44px; }
  .stat-number { font-size:2rem; }
}