/* ============================================================
   禁漫下载 — Design System "Paper Bloom"
   Palette: warm paper / deep ink-teal / coral / mint / lilac
   ============================================================ */

:root{
  --paper:#fdfbf6;
  --paper-2:#f4efe4;
  --paper-3:#ffffff;
  --ink:#14272b;
  --ink-soft:rgba(20,39,43,.66);
  --ink-faint:rgba(20,39,43,.10);
  --ink-line:rgba(20,39,43,.14);
  --coral:#ff5a3c;
  --coral-deep:#e63f22;
  --mint:#bff3d7;
  --lime:#e2f462;
  --lilac:#cfc6ff;
  --sky:#bfe4ff;
  --radius-s:12px;
  --radius-m:20px;
  --radius-l:30px;
  --hard-shadow:6px 6px 0 rgba(20,39,43,.10);
  --soft-shadow:0 18px 40px -24px rgba(20,39,43,.35);
}

/* 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:1.7;
  padding-top:68px;
  -webkit-font-smoothing:antialiased;
}
/* 纸感纹理层 */
body::before{
  content:'';
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(191,243,215,.45) 0, transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(207,198,255,.42) 0, transparent 40%),
    radial-gradient(circle at 78% 92%, rgba(255,90,60,.10) 0, transparent 38%),
    radial-gradient(rgba(20,39,43,.055) 1px, transparent 1px);
  background-size:auto, auto, auto, 22px 22px;
  opacity:.9;
  mix-blend-mode:normal;
}
body > *{ position:relative; z-index:1; }

img{ max-width:100%; display:block; }
a{ color:inherit; }
::selection{ background:var(--lime); color:var(--ink); }
:focus-visible{ outline:2.5px dashed var(--coral); outline-offset:3px; border-radius:4px; }

::-webkit-scrollbar{ width:11px; }
::-webkit-scrollbar-track{ background:var(--paper-2); }
::-webkit-scrollbar-thumb{ background:var(--ink); border-radius:20px; border:3px solid var(--paper-2); }
::-webkit-scrollbar-thumb:hover{ background:var(--coral); }

/* 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:var(--paper-2);
  border-top:1px solid var(--ink-faint);
  border-bottom:1px solid var(--ink-faint);
}

/* 导航 — 固定顶部 */
.site-header{
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(253,251,246,.86);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1.5px solid var(--ink-faint);
}
.site-header::after{
  content:'';
  position:absolute; left:0; bottom:-1.5px; height:1.5px; width:100%;
  background:linear-gradient(90deg, transparent, var(--coral), var(--lilac), var(--mint), transparent);
  opacity:.75;
}
.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:800; font-size:1.15rem; letter-spacing:-.02em;
  text-decoration:none; color:var(--ink);
}
.logo:hover .logo-icon{ transform:rotate(-8deg) scale(1.06); }
.logo-icon{
  width:36px; height:36px; border-radius:11px;
  display:flex; align-items:center; justify-content:center; font-size:1rem;
  background:var(--ink); color:var(--lime);
  box-shadow:3px 3px 0 var(--coral);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1);
}
.main-nav{ display:flex; align-items:center; gap:26px; list-style:none; }
.main-nav a{
  text-decoration:none; font-size:.9rem; font-weight:600;
  color:var(--ink-soft); position:relative; padding:4px 0;
  transition:color .25s ease;
}
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:0; height:2px; width:0;
  background:var(--coral); border-radius:2px;
  transition:width .3s cubic-bezier(.65,.05,.36,1);
}
.main-nav a:hover{ color:var(--ink); }
.main-nav a:hover::after{ width:100%; }
.nav-cta{
  padding:9px 22px; border-radius:100px;
  color:#fff !important; font-weight:700;
  background:var(--ink);
  box-shadow:3px 3px 0 var(--coral);
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease;
}
.nav-cta::after{ display:none; }
.nav-cta:hover{
  background:var(--coral);
  transform:translate(-2px,-2px);
  box-shadow:5px 5px 0 var(--ink);
}
.menu-toggle{
  display:none; width:42px; height:42px; border-radius:12px;
  align-items:center; justify-content:center; cursor:pointer;
  background:var(--paper-3); border:1.5px solid var(--ink-line);
  font-size:1.1rem; color:var(--ink);
}

/* 首页Hero */
.hero{
  min-height:76vh; display:flex; align-items:center;
  padding:64px 0 80px; position:relative; overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute; width:420px; height:420px; right:-120px; top:-80px;
  background:radial-gradient(circle at 30% 30%, var(--lilac), transparent 70%);
  filter:blur(20px); opacity:.85; border-radius:50%;
}
.hero::after{
  content:'';
  position:absolute; width:300px; height:300px; left:-140px; bottom:-120px;
  background:radial-gradient(circle at 60% 40%, var(--mint), transparent 70%);
  filter:blur(16px); opacity:.9; border-radius:50%;
}
.hero-content{ max-width:760px; position:relative; z-index:2; }
.hero-eyebrow{
  display:inline-block; font-size:.78rem; font-weight:800;
  letter-spacing:.16em; text-transform:uppercase;
  padding:7px 16px; border-radius:100px; margin-bottom:22px;
  background:var(--lime); color:var(--ink);
  border:1.5px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  transform:rotate(-1.2deg);
}
.hero h1{
  font-size:clamp(2.3rem, 6.2vw, 4.3rem);
  line-height:1.06; letter-spacing:-.035em; font-weight:900;
  margin-bottom:22px; color:var(--ink);
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg, var(--coral) 0%, var(--coral-deep) 60%);
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}
.hero p{
  font-size:1.08rem; color:var(--ink-soft);
  max-width:560px; margin-bottom:34px; line-height:1.85;
}
.hero-buttons{ display:flex; gap:16px; flex-wrap:wrap; }
.hero-image{
  border-radius:var(--radius-l); overflow:hidden;
  border:2px solid var(--ink);
  box-shadow:12px 12px 0 var(--mint);
  transform:rotate(1deg);
  margin-top:40px;
}
.hero-image img{ width:100%; height:auto; }

/* 按钮 */
.btn{
  display:inline-flex; align-items:center; gap:9px;
  padding:14px 30px; border-radius:100px;
  font-weight:800; font-size:.92rem; cursor:pointer; border:none;
  text-decoration:none; letter-spacing:.01em;
  transition:transform .22s cubic-bezier(.34,1.56,.64,1), box-shadow .22s ease, background .22s ease, color .22s ease;
}
.btn-primary{
  color:#fff;
  background:var(--ink);
  box-shadow:5px 5px 0 var(--coral);
}
.btn-primary:hover{
  transform:translate(-3px,-3px);
  box-shadow:9px 9px 0 var(--coral);
  background:var(--coral);
}
.btn-outline{
  background:var(--paper-3); border:2px solid var(--ink); color:var(--ink);
  box-shadow:5px 5px 0 rgba(20,39,43,.14);
}
.btn-outline:hover{
  transform:translate(-3px,-3px);
  box-shadow:9px 9px 0 var(--lilac);
  background:var(--lime);
}

/* 标签/标题 */
.section-label{
  display:inline-flex; align-items:center; gap:9px;
  font-size:.76rem; font-weight:800; letter-spacing:.22em;
  text-transform:uppercase; margin-bottom:16px; color:var(--coral);
}
.section-label::before{
  content:''; width:26px; height:2.5px; border-radius:3px; background:var(--coral);
}
.section-title{
  font-size:clamp(1.6rem, 3.6vw, 2.4rem);
  margin-bottom:16px; font-weight:900;
  letter-spacing:-.03em; line-height:1.18; color:var(--ink);
}
.section-title span{
  display:inline-block;
  box-shadow:inset 0 -0.42em 0 var(--mint);
}
.section-desc{
  max-width:620px; color:var(--ink-soft); 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-m); padding:30px 28px;
  background:var(--paper-3);
  border:1.5px solid var(--ink-line);
  position:relative; overflow:hidden;
  transition:transform .3s cubic-bezier(.34,1.4,.64,1), box-shadow .3s ease, border-color .3s ease;
}
.category-card::after{
  content:'';
  position:absolute; top:-40px; right:-40px; width:96px; height:96px;
  border-radius:50%; background:var(--mint); opacity:0;
  transition:opacity .35s ease, transform .45s ease;
  transform:scale(.6);
}
.category-card:hover{
  transform:translateY(-6px) rotate(-.5deg);
  border-color:var(--ink);
  box-shadow:var(--hard-shadow);
}
.category-card:hover::after{ opacity:.85; transform:scale(1); }
.category-card > *{ position:relative; z-index:2; }
.card-icon{
  width:50px; height:50px; border-radius:15px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.3rem;
  background:var(--mint); border:1.5px solid var(--ink);
  box-shadow:3px 3px 0 rgba(20,39,43,.16);
}
.category-card:nth-child(3n+2) .card-icon{ background:var(--lilac); }
.category-card:nth-child(3n+3) .card-icon{ background:var(--lime); }
.category-card h3{
  font-size:1.14rem; font-weight:800; margin-bottom:8px; letter-spacing:-.01em;
}
.category-card p{ font-size:.92rem; color:var(--ink-soft); margin-bottom:16px; }
.card-link{
  font-weight:800; font-size:.84rem; text-decoration:none;
  color:var(--coral); display:inline-flex; align-items:center; gap:6px;
  border-bottom:2px solid transparent; padding-bottom:2px;
  transition:border-color .25s ease, gap .25s ease;
}
.card-link::after{ content:'→'; transition:transform .25s ease; }
.card-link:hover{ border-color:var(--coral); }
.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-l); overflow:hidden;
  border:2px solid var(--ink);
  box-shadow:14px 14px 0 var(--lilac);
  transform:rotate(-1deg);
}
.feature-image img{ width:100%; height:auto; }
.feature-block:nth-child(even) .feature-image{
  box-shadow:-14px 14px 0 var(--lime);
  transform:rotate(1deg);
}
.feature-text h2{
  font-size:clamp(1.5rem,3vw,2.1rem); font-weight:900;
  letter-spacing:-.03em; line-height:1.2; margin-bottom:16px;
}
.feature-text p{ color:var(--ink-soft); margin-bottom:22px; }
.feature-list{ list-style:none; display:grid; gap:10px; }
.feature-list li{
  padding:8px 0; display:flex; align-items:center; gap:12px;
  font-weight:600; font-size:.96rem;
}
.feature-list li::before{
  content:'✓';
  font-weight:900; font-size:.72rem; color:var(--ink);
  width:22px; height:22px; flex:0 0 22px; border-radius:50%;
  background:var(--mint); border:1.5px solid var(--ink);
  display:inline-flex; align-items:center; justify-content:center;
}

/* 数据条 */
.stats-bar{
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center;
}
.stat-item{
  padding:30px 20px; border-radius:var(--radius-m);
  background:var(--paper-3);
  border:1.5px dashed var(--ink-line);
  transition:transform .28s ease, border-color .28s ease, background .28s ease;
}
.stat-item:hover{
  transform:translateY(-5px);
  border-color:var(--coral);
  border-style:solid;
  background:#fffdf8;
}
.stat-number{
  font-size:clamp(1.9rem,4vw,2.5rem); font-weight:900; line-height:1.1;
  letter-spacing:-.04em;
  background:linear-gradient(120deg, var(--coral) 0%, var(--coral-deep) 45%, #7a4bff 110%);
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}
.stat-label{
  font-size:.86rem; color:var(--ink-soft); margin-top:8px;
  font-weight:600; 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-m); overflow:hidden;
  background:var(--paper-3);
  border:1.5px solid var(--ink-line);
  transition:transform .3s cubic-bezier(.34,1.4,.64,1), box-shadow .3s ease, border-color .3s ease;
}
.content-wall-item:hover{
  transform:translateY(-6px);
  border-color:var(--ink);
  box-shadow:var(--hard-shadow);
}
.content-wall-item img{
  width:100%; height:200px; object-fit:cover;
  border-bottom:1.5px solid var(--ink-line);
  transition:transform .6s cubic-bezier(.22,1,.36,1);
}
.content-wall-item:hover img{ transform:scale(1.05); }
.content-wall-body{ padding:22px 20px; }
.content-wall-body h3{
  font-size:1.04rem; font-weight:800; margin-bottom:8px; letter-spacing:-.01em;
}
.content-wall-body p{ font-size:.9rem; color:var(--ink-soft); margin-bottom:12px; }
.content-wall-body time{
  font-size:.76rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  color:var(--coral);
}

/* FAQ */
.faq-list{ max-width:800px; margin:0 auto; }
.faq-item{
  border:1.5px solid var(--ink-line); border-radius:var(--radius-m);
  margin-bottom:12px; overflow:hidden; cursor:pointer;
  background:var(--paper-3);
  transition:border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.faq-item:hover{ border-color:var(--ink); transform:translateY(-2px); }
.faq-item .faq-question{
  padding:18px 22px; font-weight:800; font-size:1rem;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-item .faq-question::after{
  content:'+'; font-size:1.3rem; font-weight:800; color:var(--coral);
  line-height:1; transition:transform .3s ease;
}
.faq-item.open .faq-question::after{ transform:rotate(45deg); }
.faq-item .faq-answer{
  padding:0 22px 18px; display:none; color:var(--ink-soft); font-size:.94rem;
}
.faq-item.open .faq-answer{ display:block; animation:fadeUp .35s ease both; }
.faq-item.open{ border-color:var(--ink); box-shadow:5px 5px 0 var(--mint); }

@keyframes fadeUp{
  from{ opacity:0; transform:translateY(-6px); }
  to{ opacity:1; transform:translateY(0); }
}

/* CTA横幅 */
.cta-banner{
  padding:64px 32px; text-align:center; border-radius:var(--radius-l);
  color:#fff; position:relative; overflow:hidden;
  background:linear-gradient(115deg, var(--coral) 0%, var(--coral-deep) 42%, #6a4bff 100%);
  border:2px solid var(--ink);
  box-shadow:14px 14px 0 var(--lime);
}
.cta-banner::before,.cta-banner::after{
  content:''; position:absolute; border-radius:50%;
  background:rgba(255,255,255,.16);
}
.cta-banner::before{ width:280px; height:280px; top:-140px; left:-80px; }
.cta-banner::after{ width:200px; height:200px; bottom:-110px; right:-40px; }
.cta-banner h2{
  color:#fff; font-size:clamp(1.6rem,3.6vw,2.3rem);
  font-weight:900; letter-spacing:-.03em; margin-bottom:12px;
  position:relative; z-index:2;
}
.cta-banner p{
  color:rgba(255,255,255,.9); margin:0 auto 28px; max-width:520px;
  position:relative; z-index:2;
}
.cta-banner .btn-primary{
  background:#fff; color:var(--ink);
  box-shadow:5px 5px 0 var(--ink);
  position:relative; z-index:2;
}
.cta-banner .btn-primary:hover{
  background:var(--lime); transform:translate(-3px,-3px);
  box-shadow:9px 9px 0 var(--ink);
}

/* 页脚 */
.site-footer{
  padding:64px 0 30px;
  background:var(--paper-2);
  border-top:1.5px solid var(--ink-faint);
  position:relative;
}
.site-footer::before{
  content:'';
  position:absolute; top:0; left:0; width:100%; height:4px;
  background:repeating-linear-gradient(90deg, var(--coral) 0 26px, var(--lilac) 26px 52px, var(--mint) 52px 78px, transparent 78px 104px);
  opacity:.75;
}
.site-footer .container{ max-width:1200px; }
.footer-grid{
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px;
}
.footer-brand .logo{ margin-bottom:16px; }
.footer-brand p{
  color:var(--ink-soft); font-size:.9rem; max-width:320px;
}
.footer-col h4{
  font-size:.78rem; font-weight:800; letter-spacing:.16em;
  text-transform:uppercase; margin-bottom:16px; color:var(--ink);
}
.footer-col ul{ list-style:none; display:grid; gap:10px; }
.footer-col ul a{
  text-decoration:none; font-size:.9rem; color:var(--ink-soft);
  transition:color .22s ease, padding-left .22s ease;
}
.footer-col ul a:hover{ color:var(--coral); padding-left:6px; }
.footer-bottom{
  border-top:1.5px solid var(--ink-faint);
  margin-top:44px; padding-top:22px; text-align:center;
  font-size:.84rem; color:var(--ink-soft); letter-spacing:.02em;
}

/* 工具类 */
.text-accent{ color:var(--coral); font-weight:800; }
.text-center{ text-align:center; }
.text-center .section-desc{ margin-left:auto; margin-right:auto; }
.seo-description{
  max-width:640px; margin:0 auto 48px; color:var(--ink-soft); font-size:1.02rem;
}
.mt-0{ margin-top:0; }
.mb-0{ margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 900px){
  .feature-block{ grid-template-columns:1fr; gap:36px; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
}
@media (max-width: 768px){
  body{ padding-top:64px; }
  .section{ padding:60px 0; }
  .hero{ min-height:auto; padding:48px 0 56px; }
  .stats-bar{ grid-template-columns:repeat(2,1fr); }
  .main-nav{
    display:none;
  }
  .menu-toggle{ display:flex; }
  .main-nav.open{
    display:flex; flex-direction:column; align-items:flex-start; gap:16px;
    position:absolute; top:68px; left:0; width:100%;
    background:var(--paper); padding:24px;
    border-bottom:1.5px solid var(--ink-line);
    box-shadow:0 24px 40px -28px rgba(20,39,43,.4);
    animation:fadeUp .3s ease both;
  }
  .nav-cta{ width:100%; justify-content:center; }
}
@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; }
  .cta-banner{ padding:44px 20px; box-shadow:8px 8px 0 var(--lime); }
  .hero h1{ font-size:2rem; }
}