/* ============================================================
   每日大塞 · 堵车不堵心
   Design System — "Road Paper Neo-Brutalist"
   浅纸底 + 交通色 + 硬阴影 + 虚线车道
   ============================================================ */

:root{
  --paper:      #FFF6EA;
  --paper-2:    #F1ECFF;
  --paper-3:    #FFF0E6;
  --ink:        #17152F;
  --ink-soft:   #5C5680;
  --orange:     #FF5A1F;
  --violet:     #6C4BFF;
  --lime:       #C6F24E;
  --pink:       #FF9EC0;
  --sky:        #9EDBFF;

  --line:       2px solid var(--ink);
  --r-sm:       12px;
  --r-md:       18px;
  --r-lg:       26px;

  --sh-sm:      3px 3px 0 var(--ink);
  --sh:         4px 4px 0 var(--ink);
  --sh-lg:      8px 8px 0 var(--ink);

  --ease:       cubic-bezier(.2,.75,.25,1.15);
}

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

html{ scroll-behavior:smooth; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  padding-top:68px;
  color:var(--ink);
  line-height:1.7;
  background-color:var(--paper);
  background-image:radial-gradient(rgba(23,21,47,.075) 1.2px, transparent 1.2px);
  background-size:24px 24px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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

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

::-webkit-scrollbar{ width:12px; }
::-webkit-scrollbar-track{ background:var(--paper); }
::-webkit-scrollbar-thumb{
  background:var(--orange);
  border:2px solid var(--ink);
  border-radius:999px;
}

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

/* ============================================================
   核心布局 — 必须居中
   ============================================================ */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section { padding:96px 0; position:relative; }
.section:nth-child(even) { background:#F1ECFF; }

.section:nth-child(even)::before{
  content:'';
  position:absolute; top:0; left:0;
  width:100%; height:4px;
  background:repeating-linear-gradient(90deg,
    var(--ink) 0 30px, transparent 30px 58px);
  opacity:.18;
}

/* ============================================================
   导航 — 固定顶部
   ============================================================ */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(255,246,234,.86);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:2px 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:1.18rem;
  letter-spacing:-.02em;
  text-decoration:none; color:var(--ink);
}

.logo-icon {
  width:36px; height:36px; border-radius:11px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem;
  background:var(--orange);
  color:#fff;
  border:var(--line);
  box-shadow:2px 2px 0 var(--ink);
  transform:rotate(-7deg);
  transition:transform .3s var(--ease), background .3s;
}
.logo:hover .logo-icon{ transform:rotate(7deg) scale(1.06); background:var(--violet); }

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

.main-nav a {
  position:relative;
  text-decoration:none; font-size:.92rem; font-weight:700;
  color:var(--ink);
  transition:color .2s, transform .2s;
}
.main-nav a::after{
  content:'';
  position:absolute; left:0; bottom:-4px;
  height:2px; width:0;
  background:var(--orange);
  transition:width .25s var(--ease);
}
.main-nav a:hover{ color:var(--orange); }
.main-nav a:hover::after{ width:100%; }

.nav-cta {
  padding:9px 20px; border-radius:999px;
  color:#fff !important; font-weight:800;
  background:var(--ink);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--orange);
  transition:transform .18s var(--ease), box-shadow .18s var(--ease);
}
.nav-cta::after{ display:none; }
.nav-cta:hover{ transform:translate(-2px,-2px); box-shadow:5px 5px 0 var(--orange); }

.menu-toggle {
  display:none;
  width:44px; height:44px;
  align-items:center; justify-content:center;
  background:var(--lime);
  border:var(--line);
  border-radius:13px;
  box-shadow:var(--sh-sm);
  font-size:1.2rem; font-weight:900;
  color:var(--ink); cursor:pointer;
}

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  min-height:70vh;
  display:flex; align-items:center;
  padding:84px 0 72px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:'';
  position:absolute; left:0; bottom:0;
  width:100%; height:8px;
  background:repeating-linear-gradient(90deg,
    var(--ink) 0 34px, transparent 34px 64px);
  opacity:.22;
  animation:roadMove 2.6s linear infinite;
}
@keyframes roadMove{ to{ background-position-x:64px; } }

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

.hero-eyebrow {
  display:inline-block; font-size:.78rem; font-weight:900;
  letter-spacing:.18em; text-transform:uppercase;
  padding:6px 16px; border-radius:999px;
  margin-bottom:22px;
  background:var(--lime);
  color:var(--ink);
  border:var(--line);
  box-shadow:var(--sh-sm);
}

.hero h1 {
  font-size:clamp(2.3rem, 6.2vw, 4.4rem);
  line-height:1.06;
  letter-spacing:-.035em;
  font-weight:900;
  margin-bottom:22px;
}
.hero h1 em{
  font-style:normal;
  color:var(--orange);
  background:linear-gradient(transparent 62%, rgba(198,242,78,.85) 62%);
  padding:0 .08em;
}

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

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

.hero-image {
  border-radius:var(--r-lg);
  overflow:hidden;
  border:var(--line);
  box-shadow:var(--sh-lg);
  transform:rotate(-.8deg);
  transition:transform .45s var(--ease);
}
.hero-image:hover{ transform:rotate(0deg) scale(1.01); }
.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:14px;
  font-weight:800; font-size:.96rem; letter-spacing:.01em;
  cursor:pointer; border:none; text-decoration:none;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .2s;
  will-change:transform;
}

.btn-primary {
  color:#fff;
  background:var(--orange);
  border:var(--line);
  box-shadow:var(--sh);
}
.btn-primary:hover{
  transform:translate(-3px,-3px);
  box-shadow:6px 6px 0 var(--ink);
}
.btn-primary:active{ transform:translate(0,0); box-shadow:1px 1px 0 var(--ink); }

.btn-outline {
  background:#fff;
  color:var(--ink);
  border:var(--line);
  box-shadow:var(--sh);
}
.btn-outline:hover{
  transform:translate(-3px,-3px);
  box-shadow:6px 6px 0 var(--ink);
  background:var(--lime);
}
.btn-outline:active{ transform:translate(0,0); box-shadow:1px 1px 0 var(--ink); }

/* ============================================================
   标签 / 标题
   ============================================================ */
.section-label {
  display:inline-block;
  font-size:.74rem; font-weight:900;
  letter-spacing:.3em; text-transform:uppercase;
  padding:5px 14px; margin-bottom:18px;
  color:var(--ink);
  background:var(--pink);
  border:var(--line);
  border-radius:999px;
  box-shadow:var(--sh-sm);
}

.section-title {
  font-size:clamp(1.7rem, 3.8vw, 2.6rem);
  font-weight:900;
  line-height:1.15;
  letter-spacing:-.03em;
  margin-bottom:16px;
}

.section-desc {
  max-width:600px;
  font-size:1.02rem;
  color:var(--ink-soft);
  margin-bottom:44px;
}

/* ============================================================
   卡片网格
   ============================================================ */
.cards-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:26px;
}

.category-card {
  position:relative;
  border-radius:var(--r-md);
  padding:30px 28px;
  background:#fff;
  border:var(--line);
  box-shadow:var(--sh);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s;
}
.category-card:hover {
  transform:translate(-5px,-5px);
  box-shadow:9px 9px 0 var(--ink);
  background:#FFFBEF;
}

.card-icon {
  width:52px; height:52px;
  border-radius:15px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
  font-size:1.35rem;
  background:var(--lime);
  border:var(--line);
  box-shadow:2px 2px 0 var(--ink);
}

.cards-grid .category-card:nth-child(3n+2) .card-icon{ background:var(--sky); }
.cards-grid .category-card:nth-child(3n+3) .card-icon{ background:var(--pink); }
.cards-grid .category-card:nth-child(4n+1) .card-icon{ background:var(--lime); }

.category-card h3{
  font-size:1.12rem; font-weight:900;
  letter-spacing:-.01em; margin-bottom:8px;
}
.category-card p{ font-size:.92rem; color:var(--ink-soft); margin-bottom:16px; }

.card-link {
  font-weight:900; font-size:.86rem;
  text-decoration:none;
  color:var(--orange);
  border-bottom:2px dashed rgba(255,90,31,.5);
  padding-bottom:2px;
  transition:color .2s, border-color .2s;
}
.card-link:hover{ color:var(--violet); border-color:var(--violet); }

/* ============================================================
   特性块
   ============================================================ */
.feature-block {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}

.feature-image {
  border-radius:var(--r-lg);
  overflow:hidden;
  border:var(--line);
  box-shadow:var(--sh-lg);
  transform:rotate(1deg);
}
.feature-image img { width:100%; height:auto; }

.feature-text h2{
  font-size:clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight:900; line-height:1.18;
  letter-spacing:-.03em; margin-bottom:16px;
}
.feature-text p{ color:var(--ink-soft); margin-bottom:22px; }

.feature-list { list-style:none; }
.feature-list li {
  padding:9px 0;
  display:flex; align-items:center; gap:12px;
  font-weight:600; font-size:.96rem;
}
.feature-list li::before {
  content:'✓';
  flex:0 0 auto;
  width:24px; height:24px;
  display:flex; align-items:center; justify-content:center;
  font-size:.72rem; font-weight:900;
  background:var(--lime);
  border:2px solid var(--ink);
  border-radius:50%;
}

/* ============================================================
   数据条
   ============================================================ */
.stats-bar {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  text-align:center;
}

.stat-item {
  padding:30px 20px;
  border-radius:var(--r-md);
  background:#fff;
  border:var(--line);
  box-shadow:var(--sh);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease);
}
.stat-item:hover{ transform:translate(-4px,-4px); box-shadow:8px 8px 0 var(--ink); }

.stat-number {
  font-size:clamp(1.9rem, 4vw, 2.7rem);
  font-weight:900;
  line-height:1;
  letter-spacing:-.045em;
  color:var(--orange);
}

.stat-item:nth-child(2) .stat-number{ color:var(--violet); }
.stat-item:nth-child(3) .stat-number{ color:#3E9B4F; }
.stat-item:nth-child(4) .stat-number{ color:#D6337A; }

.stat-label {
  font-size:.8rem; font-weight:800;
  letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-soft);
  margin-top:10px;
}

/* ============================================================
   内容墙
   ============================================================ */
.content-wall {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:26px;
}

.content-wall-item {
  border-radius:var(--r-md);
  overflow:hidden;
  background:#fff;
  border:var(--line);
  box-shadow:var(--sh);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease);
}
.content-wall-item:hover {
  transform:translate(-5px,-5px);
  box-shadow:9px 9px 0 var(--ink);
}

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

.content-wall-body { padding:22px; }
.content-wall-body h3{
  font-size:1.05rem; font-weight:900;
  letter-spacing:-.01em; margin-bottom:8px;
}
.content-wall-body p{ font-size:.9rem; color:var(--ink-soft); }

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

.faq-item {
  background:#fff;
  border:var(--line);
  border-radius:var(--r-sm);
  margin-bottom:12px;
  overflow:hidden;
  cursor:pointer;
  box-shadow:var(--sh-sm);
  transition:box-shadow .2s var(--ease), transform .2s var(--ease), background .2s;
}
.faq-item:hover{ transform:translate(-2px,-2px); box-shadow:5px 5px 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;
  font-size:1.4rem; font-weight:900; line-height:1;
  color:var(--orange);
  transition:transform .25s var(--ease), color .25s;
}
.faq-item.open .faq-question::after{
  content:'–';
  transform:rotate(180deg);
  color:var(--violet);
}

.faq-item .faq-answer {
  padding:0 22px 18px;
  display:none;
  font-size:.94rem;
  color:var(--ink-soft);
  border-top:2px dashed rgba(23,21,47,.18);
  padding-top:14px;
  margin:0 22px 18px;
  padding-left:0; padding-right:0;
}
.faq-item.open {
  background:#FFF4E9;
  box-shadow:6px 6px 0 var(--ink);
  transform:translate(-2px,-2px);
}
.faq-item.open .faq-answer { display:block; }

/* ============================================================
   CTA 横幅
   ============================================================ */
.cta-banner {
  position:relative;
  padding:64px 28px;
  text-align:center;
  border-radius:var(--r-lg);
  color:#fff;
  background:linear-gradient(118deg, #FF5A1F 0%, #FF8148 42%, #6C4BFF 100%);
  border:var(--line);
  box-shadow:var(--sh-lg);
  overflow:hidden;
}
.cta-banner::before{
  content:'';
  position:absolute; left:0; top:50%;
  width:100%; height:6px;
  transform:translateY(-50%);
  background:repeating-linear-gradient(90deg,
    rgba(255,255,255,.55) 0 30px, transparent 30px 56px);
  opacity:.5;
  pointer-events:none;
}
.cta-banner h2 {
  color:#fff;
  position:relative;
  font-size:clamp(1.6rem, 3.6vw, 2.4rem);
  font-weight:900;
  letter-spacing:-.03em;
  margin-bottom:14px;
}
.cta-banner p{
  position:relative;
  max-width:520px; margin:0 auto 30px;
  color:rgba(255,255,255,.92);
  font-size:1rem;
}
.cta-banner .btn-primary {
  position:relative;
  background:#fff;
  color:var(--ink);
  border:var(--line);
  box-shadow:var(--sh);
}
.cta-banner .btn-primary:hover{
  background:var(--lime);
  transform:translate(-3px,-3px);
  box-shadow:6px 6px 0 var(--ink);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  padding:64px 0 28px;
  background:var(--paper-2);
  border-top:var(--line);
  position:relative;
}
.site-footer::before{
  content:'';
  position:absolute; top:0; left:0;
  width:100%; height:4px;
  background:repeating-linear-gradient(90deg,
    var(--ink) 0 30px, transparent 30px 58px);
  opacity:.2;
}

.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:44px;
}

.footer-brand .logo{ margin-bottom:16px; }
.footer-brand p{ font-size:.92rem; color:var(--ink-soft); max-width:320px; }

.footer-col h4{
  font-size:.78rem; font-weight:900;
  letter-spacing:.24em; text-transform:uppercase;
  margin-bottom:16px;
  color:var(--violet);
}
.footer-col ul{ list-style:none; }
.footer-col li{ margin-bottom:9px; }
.footer-col a{
  font-size:.9rem; font-weight:600;
  color:var(--ink-soft);
  text-decoration:none;
  transition:color .2s, padding-left .2s;
}
.footer-col a:hover{ color:var(--orange); padding-left:5px; }

.footer-bottom {
  border-top:1px dashed rgba(23,21,47,.32);
  margin-top:44px;
  padding-top:22px;
  text-align:center;
  font-size:.85rem;
  color:var(--ink-soft);
}

/* ============================================================
   工具类
   ============================================================ */
.text-accent {
  color:var(--orange);
  background:linear-gradient(transparent 63%, rgba(198,242,78,.9) 63%);
  padding:0 .1em;
  font-weight:900;
}
.text-center { text-align:center; }

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

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

/* ============================================================
   ⚠️ 响应式
   ============================================================ */
@media (max-width: 1024px){
  .section{ padding:80px 0; }
  .feature-block{ gap:40px; }
  .footer-grid{ gap:32px; }
}

@media (max-width: 768px) {
  .section{ padding:68px 0; }
  .feature-block { grid-template-columns:1fr; }
  .feature-image{ transform:none; }
  .stats-bar { grid-template-columns:repeat(2,1fr); gap:18px; }
  .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:stretch;
    position:absolute; top:68px; left:0; width:100%;
    background:var(--paper);
    padding:22px 24px 28px;
    gap:18px;
    border-bottom:var(--line);
    box-shadow:0 10px 0 rgba(23,21,47,.12);
  }
  .main-nav.open a{ font-size:1rem; padding:4px 0; }
  .main-nav.open .nav-cta{ text-align:center; }
  .hero{ padding:60px 0 56px; min-height:auto; }
  .hero p{ font-size:1rem; }
  .cta-banner{ padding:48px 22px; }
  .section-label{ font-size:.68rem; letter-spacing:.22em; }
}

@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; }
  .btn{ width:100%; }
  .hero h1{ font-size:2.15rem; letter-spacing:-.02em; }
  .section-title{ font-size:1.55rem; }
  .category-card{ padding:24px 20px; }
  .stat-item{ padding:24px 16px; }
  .content-wall-item img{ height:180px; }
  .cta-banner h2{ font-size:1.45rem; }
}

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