/* 修文PDF 官网样式：简洁现代 */

:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --border: rgba(255,255,255,.14);
  --primary: #E8112D;
  --primary-2: #ff3b4f;
  --shadow: 0 18px 40px rgba(0,0,0,.35);
  --radius: 18px;
}

*{ box-sizing: border-box; }
html, body{ margin: 0; padding: 0; }

body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 600px at 10% 0%, rgba(232,17,45,.25), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(27,86,165,.22), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }

.container{
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.72);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 14px;
}

.brand{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .3px;
}

.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(232,17,45,.85), rgba(255,59,79,.35));
  box-shadow: 0 10px 26px rgba(232,17,45,.26);
}

.brand-text{
  font-size: 16px;
}

.nav{
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}
.nav a:hover{ color: var(--text); }

.header-actions{
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle{
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle span{
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: rgba(255,255,255,.8);
}

.hero{
  padding: 56px 0 10px;
}

.hero-grid{
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 24px;
  align-items: center;
}

.hero-copy h1{
  font-size: clamp(28px, 3.3vw, 44px);
  margin: 10px 0 10px;
  line-height: 1.15;
}

.badge{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: 13px;
}

.lead{
  color: var(--muted);
  font-size: 16px;
  max-width: 54ch;
}

.cta-row{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
  align-items: center;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  padding: 12px 16px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform .08s ease, background .2s ease, border-color .2s ease;
}
.btn:active{ transform: translateY(1px); }

.btn-primary{
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 14px 28px rgba(232,17,45,.24);
}
.btn-primary:hover{ background: linear-gradient(135deg, #ff3b4f, #e8112d); }

.btn-ghost{
  background: rgba(255,255,255,.03);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover{ background: rgba(255,255,255,.07); }

.btn-taobao{
  background: linear-gradient(135deg, #ff6700, #ff8533);
  color: #fff;
  box-shadow: 0 14px 28px rgba(255,103,0,.25);
}
.btn-taobao:hover{ background: linear-gradient(135deg, #ff8533, #ff6700); }

.card-taobao{ border-color: rgba(255,103,0,.35); }

.btn-sm{
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
}

.btn-primary.btn-sm{ box-shadow: none; }

.hero-stats{
  display: flex;
  gap: 14px;
  margin-top: 22px;
  flex-wrap: wrap;
}
.stat{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius: 14px;
  padding: 14px 14px;
  min-width: 140px;
}
.stat-num{
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 4px;
}
.stat-label{
  color: var(--muted);
  font-size: 13px;
}

.hero-visual{
  display: flex;
  justify-content: flex-end;
}
.visual-card{
  width: 100%;
  max-width: 420px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.visual-title{
  font-weight: 900;
  margin: 6px 0 12px;
}
.chip-row{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}
.chip{
  font-size: 13px;
  color: rgba(255,255,255,.82);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  padding: 7px 10px;
  border-radius: 999px;
}
.visual-foot{
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  margin-top: 12px;
  font-size: 13px;
}
.dot{
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(232,17,45,.9);
  box-shadow: 0 0 0 5px rgba(232,17,45,.15);
}

.section{
  padding: 54px 0;
}
.section-alt{
  background: rgba(255,255,255,.02);
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.section-head h2{
  margin: 0 0 10px;
  font-size: 24px;
}
.section-head p{
  color: var(--muted);
  margin: 0;
}

.cards-grid{
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius: 16px;
  padding: 18px 16px;
}
.card h3{
  margin: 0 0 10px;
  font-size: 16px;
}
.card p{ color: var(--muted); margin: 0; }
.muted{ color: var(--muted); }

.list-grid{
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.list-item{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  border-radius: 16px;
  padding: 18px 16px;
}
.list-item h3{
  margin: 0 0 10px;
  font-size: 16px;
}
.list-item p{ margin: 0; color: var(--muted); }

.privacy-grid{
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.privacy-box{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius: 16px;
  padding: 18px 16px;
}
.privacy-box h3{
  margin: 0 0 10px;
  font-size: 16px;
}
.privacy-box p{ margin: 0; color: var(--muted); }
.note{
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  padding: 14px 16px;
  border: 1px dashed rgba(255,255,255,.2);
  border-radius: 16px;
}

.form-wrap{
  margin-top: 22px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding: 18px;
}

.form{
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form label{
  display: block;
  color: rgba(255,255,255,.84);
  font-size: 14px;
}

.form input, .form textarea{
  width: 100%;
  margin-top: 8px;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  color: var(--text);
  outline: none;
}
.form input:focus, .form textarea:focus{
  border-color: rgba(232,17,45,.7);
  box-shadow: 0 0 0 4px rgba(232,17,45,.18);
}
.form textarea{ resize: vertical; min-height: 120px; }

.form-actions{
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.form-hint{
  color: var(--muted);
  font-size: 13px;
}

.callout{
  margin-top: 18px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  border-radius: 16px;
  padding: 16px;
}
.callout-title{
  font-weight: 900;
  margin-bottom: 8px;
}
.callout-body p{
  margin: 0 0 8px;
  color: var(--muted);
}
.callout-ok{
  border-color: rgba(0, 255, 160, .25);
}
.callout-warn{
  border-color: rgba(255, 195, 0, .25);
}

.section-divider{
  height: 1px;
  background: rgba(255,255,255,.08);
  margin: 18px 0;
}

.row{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.cards-grid-2{
  grid-template-columns: repeat(2, 1fr) !important;
}

.site-footer{
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 20px;
}
.footer-inner{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.footer-brand{
  font-weight: 900;
}
.footer-sub{
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}
.footer-link{
  color: var(--muted);
  margin-left: 12px;
}
.footer-link:hover{ color: var(--text); }

.nav-open .nav{
  display: flex;
}

@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ justify-content: flex-start; }
  .cards-grid{ grid-template-columns: 1fr; }
  .list-grid{ grid-template-columns: 1fr; }
  .privacy-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .nav-toggle{ display: inline-flex; }
  .nav{
    display: none;
    position: absolute;
    left: 0; right: 0;
    top: 64px;
    margin: 0 auto;
    width: min(1080px, calc(100% - 32px));
    flex-direction: column;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(11,18,32,.95);
  }
  body.nav-open .nav{ display: flex; }
}