/* ============================================================
   黑料曝光 · 设计系统 v1.0
   风格：纸质档案 / 印刷调查风 · 硬阴影 · 荧光标记
   ============================================================ */

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

:root{
  --paper:      #F7F4EC;
  --paper-2:    #EFEADF;
  --surface:    #FFFFFF;
  --ink:        #16132C;
  --ink-2:      #5C5677;
  --line:       #DED7C9;
  --red:        #FF3B24;
  --red-soft:   #FFE6E1;
  --violet:     #5B2AFF;
  --violet-soft:#EAE3FF;
  --lime:       #D9F94A;
  --radius-s:   4px;
  --radius-m:   12px;
  --shadow-hard: 5px 5px 0 var(--ink);
  --shadow-soft: 4px 4px 0 rgba(22,19,44,.12);
}

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);
  background-image:
    linear-gradient(rgba(22,19,44,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,19,44,.032) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb { background: var(--ink); border: 2px solid var(--paper-2); border-radius: 20px; }
::-webkit-scrollbar-thumb:hover { background: var(--red); }

/* ===== 核心布局 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding: 88px 0;
  position: relative;
}

.section:nth-child(even) {
  background: rgba(22,19,44,.038);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(247,244,236,.86);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1.5px solid var(--ink);
  transition: background .3s ease;
}

.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;
  letter-spacing: -.02em;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}

.logo-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  font-weight: 900;
  color: #fff;
  background: var(--red);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-7deg);
  transition: transform .25s ease;
  flex-shrink: 0;
}

.logo:hover .logo-icon { transform: rotate(6deg) scale(1.06); }

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

.main-nav a {
  position: relative;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ink);
  padding-bottom: 3px;
  transition: color .2s ease;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--red);
  transition: width .28s cubic-bezier(.4,0,.2,1);
}

.main-nav a:hover { color: var(--red); }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 9px 20px !important;
  border-radius: 100px !important;
  color: #fff !important;
  font-weight: 800 !important;
  background: var(--ink);
  box-shadow: 3px 3px 0 var(--red);
  transition: transform .18s ease, box-shadow .18s ease;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  color: #fff !important;
  transform: translate(2px,2px);
  box-shadow: 1px 1px 0 var(--red);
}

.menu-toggle {
  display: none;
  width: 44px; height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: 8px;
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
}

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

/* ===== 首页 Hero ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 150px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '真相';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  font-size: clamp(90px, 15vw, 190px);
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(22,19,44,.085);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .2em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
  background: var(--lime);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.6vw, 3.9rem);
  line-height: 1.1;
  letter-spacing: -.035em;
  font-weight: 900;
  margin-bottom: 22px;
}

.hero p {
  font-size: 1.08rem;
  color: var(--ink-2);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.85;
}

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

.hero-image {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--violet);
  background: var(--surface);
}

.hero-image img {
  width: 100%;
  height: auto;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 6px;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 800;
  letter-spacing: .02em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform .18s cubic-bezier(.4,0,.2,1), box-shadow .18s ease, background .2s ease, color .2s ease;
}

.btn:focus-visible {
  outline: 2px dashed var(--red);
  outline-offset: 3px;
}

.btn-primary {
  color: #fff;
  background: var(--red);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.btn-primary:hover {
  transform: translate(3px,3px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-primary:active { transform: translate(5px,5px); box-shadow: 0 0 0 var(--ink); }

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  color: var(--ink);
  box-shadow: 5px 5px 0 rgba(22,19,44,.14);
}

.btn-outline:hover {
  background: var(--ink);
  color: #fff;
  transform: translate(3px,3px);
  box-shadow: 2px 2px 0 var(--red);
}

/* ===== 标签 / 标题 ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 14px;
}

.section-label::before {
  content: '';
  width: 26px;
  height: 2px;
  background: var(--violet);
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(1.6rem, 3.6vw, 2.45rem);
  font-weight: 900;
  letter-spacing: -.032em;
  line-height: 1.18;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 600px;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 44px;
}

/* ===== 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-m);
  padding: 28px;
  border: 2px solid var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  transition: transform .22s cubic-bezier(.4,0,.2,1), box-shadow .22s ease;
  position: relative;
}

.category-card:hover {
  transform: translate(-3px,-3px);
  box-shadow: 8px 8px 0 var(--red);
}

.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: var(--violet-soft);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: .02em;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid var(--red);
  padding-bottom: 2px;
  transition: color .2s ease, gap .2s ease;
}

.card-link:hover { color: var(--red); gap: 11px; }

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

.feature-image {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--violet);
  background: var(--surface);
}

.feature-image img {
  width: 100%;
  height: auto;
}

.feature-text h2,
.feature-text h3 {
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -.028em;
  line-height: 1.25;
  margin-bottom: 14px;
}

.feature-text p {
  color: var(--ink-2);
  line-height: 1.85;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
  display: grid;
  gap: 10px;
}

.feature-list li {
  padding: 11px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 500;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.feature-list li:hover {
  border-color: var(--ink);
  transform: translateX(5px);
  box-shadow: 4px 4px 0 var(--lime);
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  font-size: .68rem;
  color: #fff;
  background: var(--ink);
  width: 20px; height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== 数据条 ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: var(--radius-m);
  border: 2px solid var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  transition: transform .22s cubic-bezier(.4,0,.2,1), box-shadow .22s ease, background .25s ease;
}

.stat-item:hover {
  background: var(--lime);
  transform: translateY(-5px);
  box-shadow: 6px 6px 0 var(--ink);
}

.stat-number {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -.045em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink-2);
  margin-top: 12px;
}

/* ===== 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-m);
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  transition: transform .22s cubic-bezier(.4,0,.2,1), box-shadow .22s ease;
}

.content-wall-item:hover {
  transform: translate(-3px,-3px);
  box-shadow: 8px 8px 0 var(--red);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
  filter: saturate(1.06) contrast(1.03);
  transition: transform .5s cubic-bezier(.2,.8,.2,1);
}

.content-wall-item:hover img { transform: scale(1.04); }

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.4;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: .9rem;
  color: var(--ink-2);
  line-height: 1.75;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 2px solid var(--ink);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--surface);
  box-shadow: 3px 3px 0 rgba(22,19,44,.1);
  transition: box-shadow .22s ease, background .25s ease;
}

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

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.01em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  line-height: 1.5;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--red);
  flex-shrink: 0;
  transition: transform .28s cubic-bezier(.4,0,.2,1);
}

.faq-item.open { background: #FFFDF4; box-shadow: 6px 6px 0 var(--lime); }

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: var(--ink-2);
  font-size: .95rem;
  line-height: 1.85;
  border-top: 1px dashed var(--line);
  padding-top: 16px;
  margin: 0 0 0;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeUp .28s cubic-bezier(.4,0,.2,1);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== CTA 横幅 ===== */
.cta-banner {
  padding: 66px 32px;
  text-align: center;
  border-radius: 18px;
  color: #fff;
  background: var(--violet);
  border: 2px solid var(--ink);
  box-shadow: 12px 12px 0 var(--lime);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,.07) 0 12px,
    transparent 12px 24px
  );
  pointer-events: none;
}

.cta-banner > * { position: relative; z-index: 1; }

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -.032em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.cta-banner p {
  color: rgba(255,255,255,.8);
  max-width: 540px;
  margin: 0 auto 32px;
  font-size: 1rem;
  line-height: 1.8;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--ink) !important;
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
}

.cta-banner .btn-primary:hover {
  transform: translate(3px,3px);
  box-shadow: 2px 2px 0 var(--ink);
  background: var(--lime);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 64px 0 28px;
  background: var(--paper-2);
  border-top: 2px solid var(--ink);
  color: var(--ink);
}

.site-footer .container { position: relative; }

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

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-brand p {
  font-size: .9rem;
  color: var(--ink-2);
  line-height: 1.85;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: var(--ink);
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 11px;
}

.footer-col a {
  font-size: .9rem;
  color: var(--ink-2);
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-col a:hover {
  color: var(--red);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 46px;
  padding-top: 22px;
  text-align: center;
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--ink-2);
}

/* ===== 工具类 ===== */
.text-accent {
  color: var(--red);
  background-image: linear-gradient(180deg, transparent 68%, rgba(217,249,74,.9) 68%);
  background-repeat: no-repeat;
  padding: 0 .05em;
}

.text-center { text-align: center; }

.seo-description {
  max-width: 620px;
  margin: 0 auto 48px;
  color: var(--ink-2);
  font-size: .95rem;
  line-height: 1.9;
  text-align: center;
}

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

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }

  .hero { padding: 128px 0 72px; }
  .hero::before { display: none; }

  .feature-block { grid-template-columns: 1fr; gap: 36px; }
  .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;
    align-items: flex-start;
    gap: 18px;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--paper);
    padding: 24px;
    border-bottom: 2px solid var(--ink);
    box-shadow: 0 10px 0 rgba(22,19,44,.08);
  }

  .main-nav.open a { font-size: 1rem; }
  .nav-cta { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }

  .cards-grid,
  .content-wall,
  .stats-bar,
  .footer-grid { grid-template-columns: 1fr; }

  .hero-buttons { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }

  .cta-banner { padding: 48px 22px; box-shadow: 7px 7px 0 var(--lime); }
  .content-wall-item img { height: 180px; }
}