/* ================================================================
   黑料王 · 定风波 — 朱砂秘档 / Cinnabar Dossier
   Awwwards Design System : heiliaowang.tj.cn
   ================================================================ */

:root {
  --paper: #F5EFE2;
  --paper-deep: #EBE0CC;
  --milk: #FCF9F2;
  --ink: #1B1916;
  --ink-soft: #5C5448;
  --cinnabar: #C23B2E;
  --cinnabar-deep: #9F3025;
  --cinnabar-soft: rgba(194, 59, 46, 0.10);
  --teal: #155E61;
  --amber: #D9992B;
  --line: #E2D7C2;
  --line-strong: #C9B99D;
  --shadow-sm: 0 2px 12px rgba(27, 25, 22, 0.05);
  --shadow-md: 0 6px 32px rgba(27, 25, 22, 0.09);
  --shadow-lg: 0 20px 60px rgba(27, 25, 22, 0.14);
  --display: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
}

*, *::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: var(--paper);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(194, 59, 46, 0.025) 0%, transparent 30%),
    radial-gradient(circle at 88% 82%, rgba(21, 94, 97, 0.022) 0%, transparent 35%),
    repeating-linear-gradient(45deg, rgba(27, 25, 22, 0.006) 0px, rgba(27, 25, 22, 0.006) 1px, transparent 1px, transparent 9px);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--cinnabar);
  color: var(--milk);
}

::-webkit-scrollbar {
  width: 10px;
  background: var(--paper);
}
::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 5px;
  border: 2px solid var(--paper);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cinnabar);
}

/* ===================== 布局 Layout ===================== */

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

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

.section:nth-child(even) {
  background: var(--milk);
}

.section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 140px;
  background: linear-gradient(45deg, transparent 70%, rgba(194, 59, 46, 0.055) 70%, rgba(194, 59, 46, 0.055) 72%, transparent 72%, transparent 84%, rgba(194, 59, 46, 0.035) 84%, rgba(194, 59, 46, 0.035) 86%, transparent 86%);
  pointer-events: none;
  z-index: 0;
}

/* ===================== 导航 Header ===================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(245, 239, 226, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.28rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--display);
  letter-spacing: 0.06em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px 8px 8px 2px;
  background: var(--cinnabar);
  color: var(--milk);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 900;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
  transform: rotate(-4deg);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s;
  letter-spacing: 0.02em;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--cinnabar);
  transition: width 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.main-nav a:hover {
  color: var(--cinnabar);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 22px;
  background: var(--cinnabar) !important;
  border-radius: 3px !important;
  color: var(--milk) !important;
  font-weight: 700 !important;
  letter-spacing: 0.08em !important;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.15);
  transition: all 0.25s !important;
}

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

.nav-cta:hover {
  background: var(--cinnabar-deep) !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.2), 0 4px 18px rgba(194, 59, 46, 0.3);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: var(--milk);
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
}

.menu-toggle::before {
  content: "☰";
  font-size: 1.1rem;
  color: var(--ink);
}

/* ===================== Hero 首屏 ===================== */

.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 110px 0 80px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero::before {
  content: "曝";
  position: absolute;
  right: 3%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--display);
  font-size: clamp(200px, 38vw, 480px);
  font-weight: 900;
  line-height: 1;
  color: rgba(194, 59, 46, 0.045);
  pointer-events: none;
  user-select: none;
}

.hero::after {
  content: "定风波";
  position: absolute;
  right: 2%;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.55em;
  color: var(--cinnabar);
  border: 1.5px solid var(--cinnabar);
  padding: 30px 10px 18px;
  border-radius: 4px;
  opacity: 0.4;
  pointer-events: none;
  user-select: none;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 56px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1 1 55%;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 2px;
  margin-bottom: 22px;
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
  border: 1px solid rgba(194, 59, 46, 0.25);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: "●";
  font-size: 0.4rem;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(2.6rem, 5.2vw, 4.2rem);
  line-height: 1.12;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: 0.01em;
  position: relative;
  color: var(--ink);
}

.hero h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 0.22em;
  background: linear-gradient(100deg, var(--cinnabar) 0%, rgba(194, 59, 46, 0.35) 45%, transparent 90%);
  border-radius: 0 8px 8px 0;
  opacity: 0.16;
  pointer-events: none;
  z-index: -1;
}

.hero p {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.9;
  letter-spacing: 0.01em;
}

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

.hero-image {
  flex: 1 1 38%;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--milk);
  box-shadow: var(--shadow-md);
  max-width: 520px;
}

.hero-image::before {
  content: "▲ 涉密档案";
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--cinnabar);
  color: var(--milk);
  padding: 4px 12px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  z-index: 2;
  border-radius: 2px;
  box-shadow: 0 2px 10px rgba(194, 59, 46, 0.35);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  filter: sepia(12%) contrast(1.03);
  transition: filter 0.45s, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-image:hover img {
  filter: sepia(0%) contrast(1);
  transform: scale(1.02);
}

/* ===================== 按钮 Buttons ===================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 3px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  position: relative;
}

.btn::after {
  content: "→";
  transition: transform 0.3s;
}

.btn:hover::after {
  transform: translateX(4px);
}

.btn-primary {
  background: var(--cinnabar);
  color: var(--milk);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.12), 0 4px 20px rgba(194, 59, 46, 0.25);
}

.btn-primary:hover {
  background: var(--cinnabar-deep);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.2), 0 8px 28px rgba(194, 59, 46, 0.3);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  background: var(--cinnabar-soft);
  transform: translateY(-2px);
}

/* ===================== 标题标签 Section Labels ===================== */

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  margin-bottom: 16px;
  color: var(--cinnabar);
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--cinnabar);
  opacity: 0.5;
}

.section-label::after {
  content: "◆";
  font-size: 0.42rem;
  opacity: 0.7;
}

.section-title {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  line-height: 1.2;
  margin-bottom: 16px;
  font-weight: 900;
  color: var(--ink);
}

.section-desc {
  max-width: 620px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 44px;
  font-size: 0.98rem;
}

/* ===================== 卡片 Cards ===================== */

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

.category-card {
  background: var(--milk);
  border-radius: 3px;
  padding: 30px 28px 32px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cinnabar);
  position: relative;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.category-card::before {
  content: "№ " attr(data-index);
  position: absolute;
  top: 16px;
  right: 20px;
  font-family: var(--display);
  font-size: 0.7rem;
  color: var(--line-strong);
  letter-spacing: 0.08em;
}

.category-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, transparent 50%, var(--paper) 50%, var(--paper) 55%, rgba(194, 59, 46, 0.12) 100%);
  border-radius: 0 0 0 3px;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
  border-top-color: var(--cinnabar);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  border: 1px dashed rgba(194, 59, 46, 0.35);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--cinnabar);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  letter-spacing: 0.03em;
  transition: gap 0.25s;
}

.card-link::after {
  content: "→";
  transition: transform 0.25s;
}

.card-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.card-link:hover::after {
  transform: translateX(4px);
}

/* ===================== 特性 Features ===================== */

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

.feature-image {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--line);
  padding: 10px;
  box-shadow: var(--shadow-md);
}

.feature-image::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(115deg, transparent 40%, rgba(194, 59, 46, 0.05) 45%, transparent 60%);
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
  filter: saturate(0.95);
}

.feature-text {
  position: relative;
}

.feature-text p {
  color: var(--ink-soft);
  margin-bottom: 24px;
  line-height: 1.9;
}

.feature-list {
  list-style: none;
  margin-bottom: 28px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 1px dashed var(--line);
}

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

.feature-list li::before {
  content: "✓";
  font-weight: 900;
  color: var(--cinnabar);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--cinnabar-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* ===================== 数据 Stats ===================== */

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

.stat-item {
  padding: 32px 20px;
  background: var(--milk);
  border-radius: 3px;
  border: 1px solid var(--line);
  position: relative;
  transition: all 0.3s;
}

.stat-item:hover {
  border-color: var(--cinnabar);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.stat-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 2px;
  background: var(--cinnabar);
}

.stat-number {
  font-family: var(--display);
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--cinnabar);
  line-height: 1.1;
  display: block;
}

.stat-number::after {
  content: "·";
  font-size: 2rem;
  vertical-align: middle;
  margin-left: 2px;
  opacity: 0.5;
  color: var(--amber);
}

.stat-label {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ===================== 内容墙 Content Wall ===================== */

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

.content-wall-item {
  background: var(--milk);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
}

.content-wall-item::before {
  content: "机密档案";
  position: absolute;
  top: 14px;
  right: 0;
  background: var(--cinnabar);
  color: var(--milk);
  padding: 4px 12px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  border-radius: 2px 0 0 2px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(194, 59, 46, 0.3);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  filter: sepia(18%) contrast(1.02);
  transition: filter 0.4s, transform 0.5s;
}

.content-wall-item:hover img {
  filter: sepia(0%);
  transform: scale(1.02);
}

.content-wall-body {
  padding: 22px 22px 24px;
}

.content-wall-body h3 {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 16px;
}

/* ===================== FAQ ===================== */

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

.faq-item {
  background: var(--milk);
  border: 1px solid var(--line);
  border-radius: 3px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: rgba(194, 59, 46, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.98rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item .faq-question::before {
  content: "Q";
  width: 28px;
  height: 28px;
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 900;
  flex-shrink: 0;
}

.faq-item .faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--cinnabar);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  display: none;
  color: var(--ink-soft);
  line-height: 1.85;
  font-size: 0.92rem;
  border-top: 1px dashed var(--line);
  padding: 14px 24px 18px;
}

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

/* ===================== CTA 横幅 ===================== */

.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 4px;
  background: var(--cinnabar);
  color: var(--milk);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 180%;
  background: repeating-linear-gradient(45deg, transparent, transparent 6px, rgba(255, 255, 255, 0.05) 6px, rgba(255, 255, 255, 0.05) 7px);
  transform: rotate(12deg);
  pointer-events: none;
}

.cta-banner::after {
  content: "密";
  position: absolute;
  left: 18%;
  bottom: -30px;
  font-family: var(--display);
  font-size: 8rem;
  color: rgba(255, 255, 255, 0.07);
  pointer-events: none;
  line-height: 1;
}

.cta-banner h2 {
  font-family: var(--display);
  color: var(--milk);
  font-size: 2.2rem;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 480px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
  line-height: 1.8;
}

.cta-banner .btn-primary {
  background: var(--milk);
  color: var(--cinnabar);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
}

/* ===================== 页脚 Footer ===================== */

.site-footer {
  background: var(--paper-deep);
  padding: 64px 0 28px;
  border-top: 4px double var(--line-strong);
  position: relative;
}

.site-footer::before {
  content: "黑料王 · 定风波";
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--display);
  font-size: 0.65rem;
  color: rgba(194, 59, 46, 0.35);
  letter-spacing: 0.5em;
  white-space: nowrap;
}

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

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

.footer-brand {
  position: relative;
}

.footer-brand .logo {
  margin-bottom: 4px;
}

.footer-brand p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 280px;
  margin-top: 16px;
}

.footer-col h4 {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--ink);
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--cinnabar);
}

.footer-col ul {
  list-style: none;
}

.footer-col a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 5px 0;
  transition: color 0.2s, padding-left 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--line-strong);
  margin-top: 44px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.footer-bottom .seal {
  font-family: var(--display);
  color: var(--cinnabar);
  border: 1.5px solid var(--cinnabar);
  padding: 2px 10px;
  border-radius: 3px;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  opacity: 0.6;
}

/* ===================== 工具类 Utilities ===================== */

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--ink-soft);
  line-height: 1.9;
  text-align: center;
}

.seo-description::first-letter {
  font-family: var(--display);
  font-size: 1.6rem;
  color: var(--cinnabar);
  font-weight: 900;
  margin-right: 2px;
}

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

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

/* ===================== 响应式 Responsive ===================== */

@media (max-width: 992px) {
  .hero .container {
    flex-direction: column;
    gap: 48px;
  }

  .hero-image {
    flex: 1 1 auto;
    max-width: 100%;
    width: 100%;
  }

  .hero::after {
    display: none;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .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;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--paper);
    padding: 24px;
    border-bottom: 1px solid var(--line);
    gap: 0;
    box-shadow: var(--shadow-md);
  }

  .main-nav.open li {
    width: 100%;
  }

  .main-nav.open a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px dashed var(--line);
    width: 100%;
  }

  .main-nav.open .nav-cta {
    text-align: center;
    margin-top: 14px;
    border-bottom: none;
  }

  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero::after {
    display: none;
  }

  .section {
    padding: 64px 0;
  }

  .cta-banner {
    padding: 48px 28px;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }
}

@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;
    align-items: stretch;
  }

  .hero-buttons .btn {
    justify-content: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .header-inner {
    height: 64px;
    padding: 0 16px;
  }

  .main-nav.open {
    top: 64px;
  }

  .site-header {
    border-bottom-width: 1px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .cta-banner {
    padding: 40px 20px;
    border-radius: 3px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}