/* ============================================================
   黑料入口 1112321016.net  —  「证据档案」设计系统
   Palette: 米纸 #F4F1EA / 墨 #16161D / 朱砂 #FF3D2E / 荧光绿 #D9FF4B / 深靛 #2B1B6B
   ============================================================ */

:root{
  --paper:#f4f1ea;
  --paper-deep:#eae5d8;
  --paper-line:#ddd6c5;
  --ink:#16161d;
  --ink-70:rgba(22,22,29,.70);
  --ink-50:rgba(22,22,29,.50);
  --ink-12:rgba(22,22,29,.12);
  --vermilion:#ff3d2e;
  --vermilion-dk:#d9241a;
  --lime:#d9ff4b;
  --indigo:#2b1b6b;
  --teal:#0b6e6e;
  --radius:4px;
  --shadow-hard:8px 8px 0 var(--ink);
  --shadow-soft:0 18px 40px -18px rgba(22,22,29,.35);
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
}

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

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  background-color:var(--paper);
  color:var(--ink);
  line-height:1.65;
  font-size:16px;
  letter-spacing:.01em;
  background-image:
    linear-gradient(rgba(22,22,29,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,22,29,.035) 1px, transparent 1px);
  background-size:36px 36px;
  background-position:-1px -1px;
}

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

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

a{ color:inherit; }

h1,h2,h3,h4{ letter-spacing:-.02em; line-height:1.18; }

/* 截面红线装饰 */
.section{ position:relative; }

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

.section { padding:80px 0; }

.section:nth-child(even) { background:#f8f9fa; }

/* 逐节覆写，保持米纸统一感 */
.section:nth-child(even){
  background:
    repeating-linear-gradient(135deg, rgba(22,22,29,.028) 0 2px, transparent 2px 9px),
    var(--paper-deep);
}

/* 每节顶部一条案卷编号线 */
.section > .container::before{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,var(--ink) 0 60px,var(--ink-12) 60px 100%);
  margin-bottom:56px;
  opacity:.9;
}
.hero > .container::before,
.cta-banner::before,
.site-footer .container::before{ display:none; }

/* ============================================================
   导航 — 固定顶部
   ============================================================ */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ink-12);
  background:rgba(244,241,234,.88);
  backdrop-filter:blur(14px) saturate(140%);
}
.site-header::after{
  content:"";
  position:absolute; left:0; bottom:-1px; width:100%; height:3px;
  background:linear-gradient(90deg,var(--vermilion) 0 22%, var(--lime) 22% 30%, transparent 30% 100%);
  pointer-events:none;
}

.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:1.15rem; text-decoration:none; color:var(--ink);
  letter-spacing:-.03em;
}
.logo-icon {
  width:36px; height:36px; border-radius:var(--radius);
  display:flex; align-items:center; justify-content:center;
  font-size:1rem;
  background:var(--ink);
  color:var(--lime);
  box-shadow:3px 3px 0 var(--vermilion);
  font-weight:800;
}

.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:500;
  transition:0.2s; color:var(--ink-70); position:relative; padding:4px 2px;
  background-image:linear-gradient(var(--vermilion),var(--vermilion));
  background-repeat:no-repeat;
  background-size:0% 2px;
  background-position:0 100%;
  transition:background-size .28s cubic-bezier(.6,0,.2,1), color .2s;
}
.main-nav a:hover{ color:var(--ink); background-size:100% 2px; }

.nav-cta {
  padding:8px 20px; border-radius:var(--radius);
  color:#fff!important; font-weight:700;
  background:var(--vermilion);
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .18s, box-shadow .18s, background .18s;
}
.nav-cta:hover{ background:var(--ink)!important; transform:translate(-1px,-1px); box-shadow:5px 5px 0 var(--vermilion); }

.menu-toggle {
  display:none; align-items:center; justify-content:center;
  width:42px; height:38px; border:1.5px solid var(--ink); border-radius:var(--radius);
  background:transparent; color:var(--ink); font-size:1rem; cursor:pointer;
  box-shadow:3px 3px 0 var(--ink);
}

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  min-height:70vh; display:flex; align-items:center;
  padding-top:132px; padding-bottom:72px;
  position:relative; overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute; right:-160px; top:60px;
  width:520px; height:520px; border-radius:50%;
  background:radial-gradient(circle at 35% 35%, rgba(217,255,75,.85), rgba(255,61,46,.16) 55%, transparent 72%);
  filter:blur(6px);
  z-index:0; pointer-events:none;
}
.hero::after{
  content:"MASKED  /  VERIFIED";
  position:absolute; right:-40px; bottom:40px;
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.45em;
  color:var(--ink-50); transform:rotate(-90deg); transform-origin:bottom right;
  pointer-events:none;
}

.hero-content { max-width:720px; position:relative; z-index:2; }

.hero-eyebrow {
  display:inline-block; font-size:0.78rem; font-weight:700;
  padding:5px 14px; border-radius:100px; margin-bottom:20px;
  background:var(--lime); color:var(--ink);
  font-family:var(--font-mono); letter-spacing:.14em; text-transform:uppercase;
  border:1.5px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}

.hero h1 {
  font-size:2.9rem; line-height:1.16; margin-bottom:22px;
  font-weight:900; letter-spacing:-.045em;
}
.hero h1::after{
  content:"";
  display:block; width:120px; height:12px; margin-top:18px;
  background:repeating-linear-gradient(90deg,var(--vermilion) 0 10px, transparent 10px 18px);
}
.hero p {
  font-size:1.08rem; color:var(--ink-70); max-width:560px; margin-bottom:34px;
}
.hero-buttons { display:flex; gap:14px; flex-wrap:wrap; }

.hero-image { border-radius:var(--radius); overflow:hidden; }
.hero-image img { width:100%; height:auto; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 28px; border-radius:var(--radius);
  font-weight:700; cursor:pointer; border:none; text-decoration:none;
  font-size:.95rem; letter-spacing:.02em;
  transition:transform .18s cubic-bezier(.6,0,.2,1), box-shadow .18s, background .18s, color .18s;
}

.btn-primary {
  color:#fff;
  background:var(--vermilion);
  box-shadow:5px 5px 0 var(--ink);
}
.btn-primary:hover{
  background:var(--ink);
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 var(--vermilion);
}
.btn-primary:active{ transform:translate(2px,2px); box-shadow:1px 1px 0 var(--ink); }

.btn-outline {
  background:transparent; border:1.6px solid var(--ink); color:var(--ink);
  box-shadow:5px 5px 0 rgba(22,22,29,.12);
}
.btn-outline:hover{
  background:var(--lime);
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 var(--ink);
}

/* ============================================================
   标签 / 标题
   ============================================================ */
.section-label {
  display:inline-block; font-size:0.76rem; font-weight:700;
  letter-spacing:2.4px; margin-bottom:14px;
  font-family:var(--font-mono); text-transform:uppercase;
  color:var(--vermilion);
  padding-left:26px; position:relative;
}
.section-label::before{
  content:"";
  position:absolute; left:0; top:50%; transform:translateY(-50%);
  width:16px; height:2px; background:var(--vermilion);
}

.section-title {
  font-size:2.1rem; margin-bottom:16px; font-weight:900; letter-spacing:-.04em;
  max-width:760px;
}
.section-desc {
  max-width:600px; color:var(--ink-70); margin-bottom:44px; font-size:1.02rem;
}

/* ============================================================
   卡片网格
   ============================================================ */
.cards-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px;
}

.category-card {
  border-radius:var(--radius); padding:28px;
  border:1.5px solid var(--ink);
  background:#fffdf7;
  transition:transform .22s cubic-bezier(.6,0,.2,1), box-shadow .22s, background .22s;
  position:relative; overflow:hidden;
}
.category-card::before{
  content:"";
  position:absolute; top:0; left:0; width:100%; height:5px;
  background:var(--ink);
  transform:scaleX(.22); transform-origin:left;
  transition:transform .32s cubic-bezier(.6,0,.2,1), background .22s;
}
.category-card:hover {
  transform:translateY(-4px);
  box-shadow:8px 8px 0 var(--ink);
  background:var(--lime);
}
.category-card:hover::before{ transform:scaleX(1); background:var(--vermilion); }

.card-icon {
  width:48px; height:48px; border-radius:var(--radius);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.25rem;
  background:var(--paper-deep);
  border:1.5px solid var(--ink);
  box-shadow:3px 3px 0 rgba(22,22,29,.14);
}
.category-card:hover .card-icon{ background:#fff; box-shadow:3px 3px 0 var(--ink); }

.category-card h3{ font-size:1.12rem; font-weight:800; margin-bottom:8px; letter-spacing:-.02em; }

.card-link {
  font-weight:800; font-size:0.82rem; text-decoration:none;
  font-family:var(--font-mono); letter-spacing:.08em; text-transform:uppercase;
  color:var(--vermilion); display:inline-flex; align-items:center; gap:6px;
  margin-top:14px; border-bottom:1.5px solid currentColor; padding-bottom:2px;
}
.category-card:hover .card-link{ color:var(--ink); }
.card-link::after{ content:"→"; transition:transform .22s; }
.card-link:hover::after{ transform:translateX(4px); }

/* ============================================================
   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:1.5px solid var(--ink); box-shadow:var(--shadow-hard); background:#fff; }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { position:relative; }
.feature-text h2{ font-size:1.9rem; font-weight:900; letter-spacing:-.04em; margin-bottom:16px; }
.feature-text p{ color:var(--ink-70); margin-bottom:20px; }

.feature-list { list-style:none; margin-top:8px; }
.feature-list li {
  padding:9px 0; display:flex; align-items:flex-start; gap:10px;
  border-bottom:1px dashed var(--ink-12); font-weight:500;
}
.feature-list li:last-child{ border-bottom:none; }
.feature-list li::before {
  content:'✓'; font-weight:900;
  width:20px; height:20px; flex:0 0 20px; margin-top:3px;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:.7rem; border-radius:50%;
  background:var(--ink); color:var(--lime);
}

/* ============================================================
   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:var(--radius);
  border:1.5px solid var(--ink);
  background:#fffdf7;
  position:relative;
  transition:transform .22s, box-shadow .22s, background .22s;
}
.stat-item:hover{ transform:translateY(-4px); box-shadow:7px 7px 0 var(--ink); background:var(--lime); }
.stat-item::after{
  content:"";
  position:absolute; right:12px; top:12px;
  width:7px; height:7px; border-radius:50%; background:var(--vermilion);
}

.stat-number {
  font-size:2.3rem; font-weight:900; letter-spacing:-.05em;
  font-family:var(--font-mono);
  color:var(--ink); line-height:1;
}
.stat-label { font-size:0.88rem; color:var(--ink-70); margin-top:10px; letter-spacing:.04em; }

/* ============================================================
   内容墙
   ============================================================ */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }

.content-wall-item {
  border-radius:var(--radius); overflow:hidden;
  border:1.5px solid var(--ink);
  background:#fffdf7;
  transition:transform .22s cubic-bezier(.6,0,.2,1), box-shadow .22s;
}
.content-wall-item:hover { transform:translate(-3px,-3px); box-shadow:8px 8px 0 var(--ink); }

.content-wall-item img {
  width:100%; height:200px; object-fit:cover;
  filter:grayscale(.35) contrast(1.06);
  transition:filter .35s, transform .5s;
  border-bottom:1.5px solid var(--ink);
}
.content-wall-item:hover img{ filter:grayscale(0) contrast(1); transform:scale(1.03); }

.content-wall-body { padding:20px; }
.content-wall-body h3{ font-size:1.05rem; font-weight:800; margin-bottom:8px; }
.content-wall-body p{ font-size:.92rem; color:var(--ink-70); }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width:800px; margin:0 auto; }

.faq-item {
  border:1.5px solid var(--ink); border-radius:var(--radius);
  margin-bottom:10px; overflow:hidden; cursor:pointer;
  background:#fffdf7;
  transition:box-shadow .2s, transform .2s, background .2s;
}
.faq-item:hover{ transform:translate(-2px,-2px); box-shadow:5px 5px 0 var(--ink); }

.faq-item .faq-question {
  padding:18px 22px; font-weight:700;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
  font-size:1rem;
}
.faq-item .faq-question::after{
  content:"+"; font-family:var(--font-mono); font-weight:700;
  font-size:1.3rem; line-height:1; color:var(--vermilion);
  transition:transform .25s;
}
.faq-item.open{ background:var(--lime); box-shadow:6px 6px 0 var(--ink); }
.faq-item.open .faq-question::after{ transform:rotate(45deg); color:var(--ink); }

.faq-item .faq-answer {
  padding:0 22px 18px; display:none; color:var(--ink-70); font-size:.95rem;
}
.faq-item.open .faq-answer { display:block; }

/* ============================================================
   CTA 横幅
   ============================================================ */
.cta-banner {
  padding:64px 40px; text-align:center; border-radius:var(--radius); color:#fff;
  background:linear-gradient(118deg, var(--vermilion) 0%, #c72a8f 46%, var(--indigo) 100%);
  position:relative; overflow:hidden;
  border:1.5px solid var(--ink);
  box-shadow:10px 10px 0 var(--ink);
}
.cta-banner::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
}
.cta-banner > *{ position:relative; z-index:2; }
.cta-banner h2 {
  color:#fff; font-size:2rem; font-weight:900; letter-spacing:-.04em;
  max-width:720px; margin:0 auto 14px;
}
.cta-banner p{ color:rgba(255,255,255,.86); max-width:560px; margin:0 auto 30px; }
.cta-banner .btn-primary {
  background:#fff; color:var(--ink);
  box-shadow:5px 5px 0 rgba(0,0,0,.45);
}
.cta-banner .btn-primary:hover{ background:var(--lime); transform:translate(-2px,-2px); box-shadow:8px 8px 0 rgba(0,0,0,.5); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  padding:64px 0 28px;
  background:var(--paper-deep);
  border-top:1.5px solid var(--ink);
  color:var(--ink);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute; top:-1.5px; left:0; width:100%; height:6px;
  background:repeating-linear-gradient(90deg,var(--ink) 0 14px, transparent 14px 28px);
}

.site-footer .container { }

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

.footer-brand { font-size:.94rem; color:var(--ink-70); }
.footer-brand strong{ display:block; color:var(--ink); font-size:1.1rem; font-weight:900; letter-spacing:-.02em; margin-bottom:12px; }

.footer-col h4{
  font-size:.78rem; font-family:var(--font-mono); font-weight:700;
  letter-spacing:.18em; text-transform:uppercase; margin-bottom:16px;
  color:var(--vermilion);
}
.footer-col ul{ list-style:none; }
.footer-col li{ margin-bottom:10px; }
.footer-col a{
  text-decoration:none; font-size:.9rem; color:var(--ink-70);
  transition:color .18s, padding-left .18s;
}
.footer-col a:hover{ color:var(--ink); padding-left:5px; }

.footer-bottom {
  border-top:1px solid rgba(22,22,29,.16);
  margin-top:44px; padding-top:22px; text-align:center;
  font-size:0.82rem; color:var(--ink-50);
  font-family:var(--font-mono); letter-spacing:.06em;
}

/* ============================================================
   工具类
   ============================================================ */
.text-accent { color:var(--vermilion); font-weight:700; }
.text-center { text-align:center; }

.text-center.section-title,
.section-title.text-center{ margin-left:auto; margin-right:auto; }
.text-center .section-label{ padding-left:0; padding-right:0; }
.text-center .section-label::before{ display:none; }

.seo-description { max-width:600px; margin:0 auto 48px; color:var(--ink-70); }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 键盘可达性 */
a:focus-visible,button:focus-visible,.faq-item:focus-visible{
  outline:2.5px solid var(--vermilion);
  outline-offset:3px;
}

/* ============================================================
   ⚠️ 响应式
   ============================================================ */
@media (max-width: 1024px){
  .hero h1{ font-size:2.5rem; }
  .footer-grid{ grid-template-columns:1.6fr 1fr 1fr; gap:32px; }
  .feature-block{ gap:40px; }
}

@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; }

  .hero{ padding-top:110px; }
  .hero h1{ font-size:2.05rem; }
  .hero::before{ width:340px; height:340px; right:-140px; }
  .section{ padding:60px 0; }
  .section-title{ font-size:1.6rem; }
  .cta-banner{ padding:44px 22px; box-shadow:6px 6px 0 var(--ink); }
  .cta-banner h2{ font-size:1.5rem; }

  .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(--paper); padding:22px 24px;
    gap:16px; border-bottom:1.5px solid var(--ink);
    box-shadow:0 12px 24px -14px rgba(22,22,29,.4);
  }
  .main-nav.open a{ font-size:1rem; width:100%; padding:6px 0; border-bottom:1px dashed var(--ink-12); }
  .main-nav.open .nav-cta{ width:auto; border-bottom:none; color:#fff!important; }
}

@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; }
  .hero-buttons .btn{ width:100%; }
  .hero h1{ font-size:1.78rem; }
  .stat-number{ font-size:1.9rem; }
  .category-card{ padding:22px; }
  body{ background-size:26px 26px; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce){
  *{ animation:none!important; transition:none!important; scroll-behavior:auto!important; }
}