/* =========================================================
   黑料不打烊 · 设计系统
   风格：Risograph 孔版印刷 / 复古小报拼贴
   色板：奶油纸 + 朱红 + 电光蓝 + 蜜金 + 薄荷
   ========================================================= */

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root{
  --paper:#FBF3E4;
  --paper-deep:#F4E8D2;
  --paper-tint:#F7EFDE;
  --ink:#1A1038;
  --ink-70:rgba(26,16,56,.72);
  --ink-60:rgba(26,16,56,.6);
  --ink-40:rgba(26,16,56,.4);
  --red:#FF3B2F;
  --blue:#2B2BF0;
  --gold:#FFC93C;
  --mint:#A8EFD4;
  --line:2px solid var(--ink);
  --hard:6px 6px 0 var(--ink);
  --hard-sm:4px 4px 0 var(--ink);
  --hard-lg:10px 10px 0 var(--ink);
  --ease:cubic-bezier(.22,.61,.36,1);
}

html{
  scroll-behavior:smooth;
  scroll-padding-top:92px;
}

body{
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  color:var(--ink);
  line-height:1.7;
  background-color:var(--paper);
  background-image:radial-gradient(rgba(26,16,56,.075) 1px, transparent 1px);
  background-size:22px 22px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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

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

h1,h2,h3,h4,h5{ line-height:1.22; letter-spacing:-.02em; font-weight:900; }

/* ================= 核心布局 ================= */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  width:100%;
}

.section{
  padding:80px 0;
  position:relative;
}

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

/* ================= 导航 ================= */
.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1000;
  background:rgba(251,243,228,.88);
  backdrop-filter:blur(12px) saturate(160%);
  -webkit-backdrop-filter:blur(12px) saturate(160%);
  border-bottom:3px solid var(--ink);
}

.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:-.01em;
  text-decoration:none;
  color:var(--ink);
  white-space:nowrap;
}

.logo-icon{
  width:38px;
  height:38px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  background:var(--red);
  color:#fff;
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .18s var(--ease), box-shadow .18s var(--ease);
}

.logo:hover .logo-icon{
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 var(--ink);
}

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

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

.main-nav a::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:3px;
  background:var(--red);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s var(--ease);
}

.main-nav a:hover{ color:var(--red); }
.main-nav a:hover::after{ transform:scaleX(1); }

.nav-cta{
  padding:9px 22px;
  border-radius:999px;
  color:#fff !important;
  font-weight:800 !important;
  font-size:.85rem !important;
  background:var(--ink);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--red);
  transition:transform .16s var(--ease), box-shadow .16s var(--ease);
}

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

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

.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border:2px solid var(--ink);
  border-radius:10px;
  background:#fff;
  box-shadow:3px 3px 0 var(--ink);
  color:var(--ink);
  font-size:1.1rem;
  cursor:pointer;
}

/* ================= Hero ================= */
.hero{
  min-height:70vh;
  display:flex;
  align-items:center;
  padding:148px 0 88px;
  position:relative;
  overflow:hidden;
  background:var(--paper);
}

.hero::before{
  content:'';
  position:absolute;
  top:80px;
  right:-140px;
  width:460px;
  height:460px;
  border-radius:50%;
  border:3px solid var(--ink);
  background-image:repeating-linear-gradient(
      45deg,
      rgba(255,255,255,.65) 0 10px,
      transparent 10px 22px
  );
  background-color:var(--mint);
  z-index:0;
  pointer-events:none;
}

.hero::after{
  content:'';
  position:absolute;
  bottom:64px;
  left:-70px;
  width:170px;
  height:170px;
  background:var(--gold);
  border:3px solid var(--ink);
  border-radius:26px;
  transform:rotate(-14deg);
  z-index:0;
  pointer-events:none;
}

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

.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 18px;
  border-radius:999px;
  margin-bottom:22px;
  background:var(--gold);
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}

.hero h1{
  font-size:clamp(2.3rem, 5.4vw, 3.8rem);
  line-height:1.14;
  margin-bottom:22px;
  font-weight:900;
  letter-spacing:-.035em;
}

.hero p{
  font-size:1.08rem;
  color:var(--ink-70);
  max-width:560px;
  margin-bottom:34px;
}

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

.hero-image{
  border-radius:18px;
  overflow:hidden;
  border:var(--line);
  box-shadow:var(--hard-lg);
  background:#fff;
}

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

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 30px;
  border-radius:11px;
  font-weight:800;
  font-size:.92rem;
  letter-spacing:.02em;
  cursor:pointer;
  border:2px solid var(--ink);
  text-decoration:none;
  box-shadow:var(--hard-sm);
  transition:transform .16s var(--ease), box-shadow .16s var(--ease), background .2s var(--ease);
}

.btn:hover{
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--ink);
}

.btn:active{
  transform:translate(4px,4px);
  box-shadow:0 0 0 var(--ink);
}

.btn-primary{
  background:var(--red);
  color:#fff;
}

.btn-primary:hover{
  background:#FF5348;
}

.btn-outline{
  background:#fff;
  color:var(--ink);
  border:2px solid var(--ink);
}

.btn-outline:hover{
  background:var(--mint);
}

/* ================= 标签 / 标题 ================= */
.section-label{
  display:inline-block;
  position:relative;
  padding-left:28px;
  font-size:.74rem;
  font-weight:900;
  letter-spacing:.3em;
  text-transform:uppercase;
  margin-bottom:14px;
  color:var(--blue);
}

.section-label::before{
  content:'';
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%) rotate(45deg);
  width:12px;
  height:12px;
  background:var(--red);
  border:2px solid var(--ink);
}

.section-title{
  font-size:clamp(1.6rem, 3.4vw, 2.3rem);
  margin-bottom:16px;
  letter-spacing:-.03em;
  font-weight:900;
}

.section-desc{
  max-width:600px;
  color:var(--ink-70);
  margin-bottom:44px;
  font-size:1rem;
}

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

.category-card{
  border-radius:18px;
  padding:30px 28px;
  border:var(--line);
  background:#fff;
  box-shadow:var(--hard);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}

.category-card:hover{
  transform:translate(-3px,-3px);
  box-shadow:10px 10px 0 var(--ink);
}

.category-card:nth-child(4n+1){ box-shadow:6px 6px 0 var(--red); }
.category-card:nth-child(4n+2){ box-shadow:6px 6px 0 var(--blue); }
.category-card:nth-child(4n+3){ box-shadow:6px 6px 0 var(--gold); }
.category-card:nth-child(4n+4){ box-shadow:6px 6px 0 var(--mint); }

.category-card:nth-child(4n+1):hover{ box-shadow:10px 10px 0 var(--red); }
.category-card:nth-child(4n+2):hover{ box-shadow:10px 10px 0 var(--blue); }
.category-card:nth-child(4n+3):hover{ box-shadow:10px 10px 0 var(--gold); }
.category-card:nth-child(4n+4):hover{ box-shadow:10px 10px 0 var(--mint); }

.card-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
  font-size:1.3rem;
  border:2px solid var(--ink);
  background:var(--gold);
  color:var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}

.category-card:nth-child(4n+1) .card-icon{ background:var(--red); color:#fff; }
.category-card:nth-child(4n+2) .card-icon{ background:var(--blue); color:#fff; }
.category-card:nth-child(4n+3) .card-icon{ background:var(--gold); color:var(--ink); }
.category-card:nth-child(4n+4) .card-icon{ background:var(--mint); color:var(--ink); }

.category-card h3{
  font-size:1.12rem;
  font-weight:900;
  margin-bottom:10px;
  letter-spacing:-.02em;
}

.category-card p{
  font-size:.92rem;
  color:var(--ink-60);
  margin-bottom:16px;
}

.card-link{
  display:inline-block;
  font-weight:800;
  font-size:.85rem;
  text-decoration:none;
  color:var(--ink);
  border-bottom:3px solid var(--red);
  padding-bottom:2px;
  transition:color .2s var(--ease), border-color .2s var(--ease), letter-spacing .2s var(--ease);
}

.card-link:hover{
  color:var(--red);
  border-color:var(--ink);
  letter-spacing:.04em;
}

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

.feature-image{
  border-radius:18px;
  overflow:hidden;
  border:var(--line);
  box-shadow:10px 10px 0 var(--blue);
  background:#fff;
}

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

.feature-text{ position:relative; }

.feature-text h2{
  font-size:clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom:16px;
  letter-spacing:-.03em;
}

.feature-text p{
  color:var(--ink-70);
  margin-bottom:24px;
}

.feature-list{
  list-style:none;
  display:grid;
  gap:4px;
}

.feature-list li{
  padding:7px 0;
  display:flex;
  align-items:center;
  gap:12px;
  font-size:.95rem;
  font-weight:600;
}

.feature-list li::before{
  content:'✓';
  flex:0 0 auto;
  width:24px;
  height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--mint);
  border:2px solid var(--ink);
  font-size:.7rem;
  font-weight:900;
  color:var(--ink);
}

.feature-list li:nth-child(even)::before{ background:var(--gold); }

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

.stat-item{
  padding:28px 22px;
  border-radius:18px;
  border:var(--line);
  background:#fff;
  box-shadow:var(--hard-sm);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease);
}

.stat-item:hover{
  transform:translate(-2px,-2px);
  box-shadow:8px 8px 0 var(--ink);
}

.stat-number{
  font-size:clamp(1.9rem, 4vw, 2.6rem);
  font-weight:900;
  letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
  color:var(--red);
  line-height:1.1;
}

.stat-item:nth-child(2) .stat-number{ color:var(--blue); }
.stat-item:nth-child(3) .stat-number{ color:#E39A00; }
.stat-item:nth-child(4) .stat-number{ color:#12A97A; }

.stat-label{
  font-size:.83rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink-60);
  margin-top:8px;
}

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

.content-wall-item{
  border-radius:18px;
  overflow:hidden;
  border:var(--line);
  background:#fff;
  box-shadow:var(--hard);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease);
  display:flex;
  flex-direction:column;
}

.content-wall-item:hover{
  transform:translate(-3px,-3px);
  box-shadow:11px 11px 0 var(--ink);
}

.content-wall-item img{
  width:100%;
  height:200px;
  object-fit:cover;
  border-bottom:var(--line);
  filter:saturate(1.08) contrast(1.03);
}

.content-wall-body{
  padding:22px 20px 24px;
  flex:1;
  display:flex;
  flex-direction:column;
}

.content-wall-body h3{
  font-size:1.05rem;
  font-weight:900;
  margin-bottom:8px;
  letter-spacing:-.02em;
}

.content-wall-body p{
  font-size:.9rem;
  color:var(--ink-60);
  margin-bottom:14px;
}

.content-wall-body .card-link{ margin-top:auto; }

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

.faq-item{
  border:var(--line);
  border-radius:16px;
  margin-bottom:12px;
  overflow:hidden;
  cursor:pointer;
  background:#fff;
  box-shadow:var(--hard-sm);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}

.faq-item:hover{
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 var(--ink);
}

.faq-item .faq-question{
  padding:18px 22px;
  font-weight:800;
  font-size:.98rem;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
}

.faq-item .faq-question::after{
  content:'＋';
  flex:0 0 auto;
  width:28px;
  height:28px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  background:var(--gold);
  border:2px solid var(--ink);
  font-size:.9rem;
  font-weight:900;
  line-height:1;
  color:var(--ink);
  transition:transform .25s var(--ease), background .25s var(--ease);
}

.faq-item.open .faq-question::after{
  content:'－';
  background:var(--red);
  color:#fff;
  transform:rotate(180deg);
}

.faq-item .faq-answer{
  padding:0 22px 18px;
  display:none;
  color:var(--ink-70);
  font-size:.93rem;
  border-top:2px dashed rgba(26,16,56,.18);
  margin:0 22px;
  padding-left:0;
  padding-right:0;
  padding-top:14px;
}

.faq-item.open{
  background:var(--paper-tint);
  box-shadow:8px 8px 0 var(--red);
}

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

/* ================= CTA 横幅 ================= */
.cta-banner{
  padding:60px 28px;
  text-align:center;
  border-radius:24px;
  color:#fff;
  border:3px solid var(--ink);
  box-shadow:var(--hard-lg);
  background-color:var(--red);
  background-image:repeating-linear-gradient(
      135deg,
      rgba(255,255,255,.12) 0 12px,
      transparent 12px 26px
  );
  position:relative;
  overflow:hidden;
}

.cta-banner h2{
  color:#fff;
  font-size:clamp(1.5rem, 3.4vw, 2.2rem);
  margin-bottom:14px;
  letter-spacing:-.03em;
  font-weight:900;
}

.cta-banner p{
  color:rgba(255,255,255,.9);
  max-width:520px;
  margin:0 auto 28px;
  font-size:1rem;
}

.cta-banner .btn-primary{
  background:#fff;
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 var(--ink);
}

.cta-banner .btn-primary:hover{
  background:var(--gold);
}

.cta-banner .hero-buttons{
  justify-content:center;
}

/* ================= 页脚 ================= */
.site-footer{
  padding:56px 0 28px;
  background:var(--paper-deep);
  border-top:3px solid var(--ink);
}

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

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

.footer-brand .logo{
  margin-bottom:16px;
}

.footer-brand p{
  font-size:.9rem;
  color:var(--ink-60);
  max-width:300px;
}

.footer-col h4{
  font-size:.76rem;
  font-weight:900;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:16px;
}

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

.footer-col li{
  margin-bottom:9px;
}

.footer-col a{
  text-decoration:none;
  font-size:.9rem;
  color:var(--ink-60);
  transition:color .2s var(--ease), padding-left .2s var(--ease);
}

.footer-col a:hover{
  color:var(--red);
  padding-left:6px;
}

.footer-bottom{
  border-top:1px solid rgba(26,16,56,.16);
  margin-top:44px;
  padding-top:22px;
  text-align:center;
  font-size:.83rem;
  color:var(--ink-60);
  letter-spacing:.02em;
}

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

.seo-description{
  max-width:600px;
  margin:0 auto 48px;
  color:var(--ink-70);
  text-align:center;
  font-size:.98rem;
}

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

/* ================= 响应式 ================= */
@media (max-width:1024px){
  .hero::before{ width:340px; height:340px; right:-160px; }
  .hero::after{ width:130px; height:130px; }
}

@media (max-width:768px){
  .section{ padding:64px 0; }
  .feature-block{ grid-template-columns:1fr; gap:36px; }
  .stats-bar{ grid-template-columns:repeat(2, 1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }

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

  .main-nav.open{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
    position:absolute;
    top:68px;
    left:0;
    width:100%;
    background:var(--paper);
    padding:22px 24px 28px;
    border-bottom:3px solid var(--ink);
    box-shadow:0 12px 0 rgba(26,16,56,.08);
  }

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

  .main-nav.open a{
    display:block;
    width:100%;
    padding:12px 0;
    font-size:1rem;
    border-bottom:2px dashed rgba(26,16,56,.15);
  }

  .main-nav.open a.nav-cta{
    display:inline-flex;
    width:auto;
    margin-top:14px;
    border-bottom:2px solid var(--ink);
  }

  .hero{
    padding:124px 0 72px;
    min-height:auto;
  }

  .hero::before{ opacity:.55; }
  .hero::after{ display:none; }

  .cta-banner{ padding:48px 20px; box-shadow:6px 6px 0 var(--ink); }
}

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

  .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:2.05rem; }
  .section-title{ font-size:1.5rem; }
  .btn{ padding:12px 24px; }
  .category-card{ padding:24px 20px; }
  .cta-banner{ box-shadow:5px 5px 0 var(--ink); border-radius:18px; }
}