/* ==========================================================================
   禁漫天堂要翻墙的风险 — 设计系统 v1.0
   风格：暖纸编辑体 × 警示胶带 × 软野兽派
   配色：米纸白 / 珊瑚警示红 / 合规青绿 / 琥珀黄
   ========================================================================== */

:root{
  /* —— 纸面底层 —— */
  --paper:      #FDF8F1;
  --paper-alt:  #F6EFE4;
  --card:       #FFFFFF;

  /* —— 墨色 —— */
  --ink:        #22323D;
  --ink-soft:   #5A6A75;
  --ink-faint:  #9AA6AE;

  /* —— 警示 / 合规 双主色 —— */
  --alert:      #FF5533;
  --alert-soft: #FFE7E0;
  --alert-deep: #D93A1B;

  --safe:       #0E9C8D;
  --safe-soft:  #DFF5F1;
  --safe-deep:  #0A6E63;

  --amber:      #FFC53D;
  --amber-soft: #FFF3D6;

  /* —— 结构与节奏 —— */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-pill: 999px;

  --hair: 1.5px solid rgba(34,50,61,.10);
  --hair-strong: 1.5px solid rgba(34,50,61,.16);

  --shadow-soft: 0 2px 4px rgba(34,50,61,.03), 0 12px 28px -12px rgba(34,50,61,.14);
  --shadow-lift: 0 4px 8px rgba(34,50,61,.04), 0 22px 44px -18px rgba(34,50,61,.22);

  --ease: cubic-bezier(.22,1,.36,1);
}

/* 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: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 纸纹 + 微光底 */
body::before{
  content:'';
  position:fixed; inset:0;
  pointer-events:none; z-index:0;
  background:
    radial-gradient(680px 420px at 88% -6%,  rgba(255,85,51,.11), transparent 68%),
    radial-gradient(560px 380px at 4% 12%,   rgba(14,156,141,.10), transparent 66%),
    radial-gradient(700px 500px at 50% 108%, rgba(255,197,61,.12), transparent 70%);
}

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

::selection{ background: var(--alert); color:#fff; }

:focus-visible{
  outline: 2.5px dashed var(--alert);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 滚动条 */
::-webkit-scrollbar{ width:11px; }
::-webkit-scrollbar-track{ background: var(--paper-alt); }
::-webkit-scrollbar-thumb{
  background: linear-gradient(var(--alert), var(--amber));
  border-radius: var(--r-pill);
  border: 3px solid var(--paper-alt);
}

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

.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section:nth-child(even) { background: #F6EFE4; }

.section:nth-child(even)::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height:5px;
  background: repeating-linear-gradient(
    -45deg,
    rgba(34,50,61,.07) 0 8px,
    transparent 8px 16px
  );
}

/* ==========================================================================
   导航 — 固定顶部
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(253,248,241,.88);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(34,50,61,.08);
}

.site-header::after{
  content:'';
  position:absolute; left:0; right:0; bottom:-1px; height:1px;
  background: linear-gradient(90deg, transparent, var(--alert), var(--amber), var(--safe), transparent);
  opacity:.55;
}

.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: 8px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: inherit;
  letter-spacing: -.02em;
}

.logo-icon {
  width: 36px; height: 36px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(140deg, var(--alert), var(--alert-deep));
  color: #fff;
  font-weight: 800;
  box-shadow: 3px 3px 0 rgba(14,156,141,.85);
  transform: rotate(-4deg);
  transition: transform .35s var(--ease);
}

.logo:hover .logo-icon{ transform: rotate(4deg) scale(1.06); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: color .22s var(--ease), letter-spacing .22s var(--ease);
  position: relative;
  padding: 4px 0;
  color: var(--ink-soft);
}

.main-nav a::after{
  content:'';
  position:absolute; left:0; bottom:0;
  width:0; height:2px;
  background: linear-gradient(90deg, var(--alert), var(--amber));
  border-radius: var(--r-pill);
  transition: width .3s var(--ease);
}

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

.nav-cta {
  padding: 8px 20px;
  border-radius: var(--r-pill);
  color: #fff !important;
  font-weight: 600;
  background: var(--ink);
  box-shadow: 3px 3px 0 var(--amber);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s;
}

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

.nav-cta:hover{
  background: var(--alert);
  transform: translate(-2px,-2px);
  box-shadow: 5px 5px 0 var(--amber);
}

.menu-toggle {
  display: none;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  border: var(--hair-strong);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--ink);
}

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before{
  content:'';
  position:absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(34,50,61,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,50,61,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 30% 40%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 30% 40%, #000 0%, transparent 72%);
  pointer-events:none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
  animation: rise .9s var(--ease) both;
}

@keyframes rise{
  from{ opacity:0; transform: translateY(26px); }
  to{ opacity:1; transform:none; }
}

.hero-eyebrow {
  display: inline-block;
  font-size: .85rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: var(--alert-soft);
  color: var(--alert-deep);
  border: 1px solid rgba(255,85,51,.28);
  letter-spacing: .04em;
}

.hero-eyebrow::before{
  content:'';
  display:inline-block;
  width:7px; height:7px;
  border-radius:50%;
  background: var(--alert);
  margin-right:8px;
  vertical-align: middle;
  animation: pulse 1.8s infinite;
}

@keyframes pulse{
  0%,100%{ box-shadow:0 0 0 0 rgba(255,85,51,.55); }
  50%    { box-shadow:0 0 0 7px rgba(255,85,51,0); }
}

.hero h1 {
  font-size: clamp(2.4rem, 5.4vw, 4rem);
  line-height: 1.12;
  margin-bottom: 20px;
  font-weight: 900;
  letter-spacing: -.035em;
  background: linear-gradient(115deg, var(--ink) 42%, var(--safe-deep) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 strong,
.hero h1 em{
  font-style: normal;
  color: var(--alert);
  position: relative;
  background: none;
  -webkit-text-fill-color: var(--alert);
}

.hero h1 strong::after,
.hero h1 em::after{
  content:'';
  position:absolute; left:0; right:0; bottom:.06em;
  height:.22em;
  background: var(--amber);
  border-radius: 3px;
  z-index:-1;
  opacity:.75;
}

.hero p {
  font-size: 1.1rem;
  opacity: .7;
  max-width: 560px;
  margin-bottom: 32px;
  color: var(--ink-soft);
}

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

.hero-image {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: 12px 12px 0 var(--safe);
  background: var(--card);
  transform: rotate(-1.2deg);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}

.hero-image:hover{
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 14px 16px 0 var(--amber);
}

.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: var(--r-pill);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), color .22s;
  font-size: .95rem;
  letter-spacing: .01em;
  position: relative;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--alert), var(--alert-deep));
  box-shadow: 4px 4px 0 rgba(14,156,141,.9);
}

.btn-primary:hover{
  transform: translate(-3px,-3px);
  box-shadow: 7px 7px 0 rgba(14,156,141,.9);
}

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

.btn-outline:hover{
  background: var(--ink);
  color: #fff;
  transform: translate(-2px,-2px);
  box-shadow: 4px 4px 0 var(--amber);
}

/* ==========================================================================
   标签 / 标题
   ========================================================================== */
.section-label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: var(--safe-deep);
  text-transform: uppercase;
}

.section-label::before{
  content:'—';
  margin-right: 8px;
  color: var(--alert);
  font-weight: 800;
}

.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  margin-bottom: 14px;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.24;
  color: var(--ink);
}

.section-desc {
  max-width: 600px;
  opacity: .7;
  margin-bottom: 40px;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.text-center .section-desc{ margin-left:auto; margin-right:auto; }

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

.category-card {
  border-radius: var(--r-md);
  padding: 28px;
  border: var(--hair);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
  background: var(--card);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.category-card::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height:4px;
  background: linear-gradient(90deg, var(--alert), var(--amber));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(255,85,51,.35);
}

.category-card:hover::before{ transform: scaleX(1); }

.card-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: var(--safe-soft);
  color: var(--safe-deep);
  transition: transform .35s var(--ease), background .3s;
}

.category-card:hover .card-icon{
  transform: rotate(-6deg) scale(1.06);
  background: var(--amber-soft);
}

.card-link {
  font-weight: 600;
  font-size: .85rem;
  text-decoration: none;
  color: var(--alert-deep);
  display: inline-block;
  margin-top: 10px;
  transition: gap .2s, transform .25s var(--ease);
}

.card-link::after{ content:' →'; transition: transform .25s var(--ease); display:inline-block; }
.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(--r-lg);
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: -10px 10px 0 var(--amber);
  background: var(--card);
}

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

.feature-text { position: relative; }

.feature-list { list-style: none; margin-top: 8px; }

.feature-list li {
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  transition: color .22s var(--ease), transform .22s var(--ease);
}

.feature-list li:hover{ color: var(--ink); transform: translateX(4px); }

.feature-list li::before {
  content:'✓';
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  min-width: 22px;
  border-radius: 50%;
  background: var(--safe);
  color: #fff;
  font-size: .75rem;
  line-height: 1;
}

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

.stat-item {
  padding: 24px;
  border-radius: var(--r-md);
  border: var(--hair);
  background: var(--card);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  position: relative;
  overflow: hidden;
}

.stat-item:nth-child(odd){ background: linear-gradient(160deg, #fff, var(--alert-soft)); }
.stat-item:nth-child(even){ background: linear-gradient(160deg, #fff, var(--safe-soft)); }

.stat-item:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--alert), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-item:nth-child(even) .stat-number{
  background: linear-gradient(135deg, var(--safe-deep), var(--safe));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: .9rem;
  opacity: .6;
  margin-top: 6px;
  color: var(--ink-soft);
  letter-spacing: .02em;
}

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

.content-wall-item {
  border-radius: var(--r-md);
  overflow: hidden;
  border: var(--hair);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  background: var(--card);
  box-shadow: var(--shadow-soft);
}

.content-wall-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .6s var(--ease);
}

.content-wall-item:hover img{ transform: scale(1.05); }

.content-wall-body { padding: 20px; }
.content-wall-body h3{ font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; letter-spacing: -.01em; }
.content-wall-body p{ font-size: .92rem; color: var(--ink-soft); }

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

.faq-item {
  border: var(--hair);
  border-radius: var(--r-sm);
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: var(--card);
  transition: border-color .25s, box-shadow .25s var(--ease), transform .25s var(--ease);
}

.faq-item:hover{ border-color: rgba(14,156,141,.4); transform: translateX(3px); }

.faq-item .faq-question {
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--ink);
}

.faq-item .faq-question::after{
  content:'+';
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--alert);
  line-height: 1;
  transition: transform .3s var(--ease);
}

.faq-item.open{ border-color: var(--alert); box-shadow: 4px 4px 0 var(--amber-soft); }

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

.faq-item .faq-answer {
  padding: 0 20px 16px;
  display: none;
  opacity: .7;
  color: var(--ink-soft);
  font-size: .95rem;
}

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

/* ==========================================================================
   CTA 横幅
   ========================================================================== */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: var(--r-lg);
  color: #fff;
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, var(--alert), #FF7A3C 48%, var(--amber));
  box-shadow: 0 22px 46px -22px rgba(255,85,51,.7);
}

.cta-banner::before{
  content:'';
  position:absolute; inset:0;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,.14) 0 10px,
    transparent 10px 24px
  );
  pointer-events:none;
}

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

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}

.cta-banner p{ opacity: .92; max-width: 560px; margin: 0 auto 26px; }

.cta-banner .btn-primary {
  background: #fff;
  color: var(--alert-deep);
  box-shadow: 4px 4px 0 rgba(34,50,61,.85);
}

.cta-banner .btn-primary:hover{
  transform: translate(-3px,-3px);
  box-shadow: 7px 7px 0 rgba(34,50,61,.85);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  padding: 56px 0 28px;
  background: var(--paper-alt);
  position: relative;
  z-index: 1;
  margin-top: 0;
}

.site-footer::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height:5px;
  background: repeating-linear-gradient(
    -45deg,
    var(--ink) 0 10px,
    var(--amber) 10px 20px
  );
  opacity:.85;
}

.site-footer .container { }

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

.footer-brand { }
.footer-brand p{ color: var(--ink-soft); font-size: .92rem; margin-top: 12px; max-width: 320px; }

.footer-col { }
.footer-col h4{
  font-size: .82rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--safe-deep);
  margin-bottom: 14px;
  font-weight: 700;
}

.footer-col ul{ list-style:none; }
.footer-col li{ margin-bottom: 8px; }
.footer-col a{
  text-decoration: none;
  font-size: .92rem;
  color: var(--ink-soft);
  transition: color .2s, padding-left .25s var(--ease);
}

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

.footer-bottom {
  border-top: 1px solid rgba(34,50,61,.12);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: .85rem;
  color: var(--ink-faint);
}

/* ==========================================================================
   工具类
   ========================================================================== */
.text-accent { color: var(--alert); }
.text-center { text-align: center; }

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: .7;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

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

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1024px){
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid .footer-col:last-child{ grid-column: span 3; }
}

@media (max-width: 768px) {
  .section{ padding: 64px 0; }
  .hero{ padding: 120px 0 64px; }
  .feature-block { grid-template-columns: 1fr; gap: 32px; }
  .feature-image{ box-shadow: -8px 8px 0 var(--amber); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid .footer-col:last-child{ grid-column: span 2; }

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

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0;
    width: 100%;
    background: #FFFFFF;
    padding: 20px;
    gap: 14px;
    align-items: flex-start;
    border-bottom: 1px solid rgba(34,50,61,.1);
    box-shadow: 0 18px 34px -20px rgba(34,50,61,.35);
  }

  .main-nav.open .nav-cta{ align-self: stretch; text-align: center; justify-content: center; }
}

@media (max-width: 480px) {
  .container{ padding: 0 18px; }
  .cards-grid, .content-wall, .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid .footer-col:last-child{ grid-column: span 1; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-buttons .btn{ justify-content: center; }
  .cta-banner{ padding: 40px 18px; border-radius: var(--r-md); }
}

/* 动效偏好 */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}