/* AI 门店助手 · 统一样式
   品牌色：主色暖橙 #F97316 / 文字深炭灰 #1F2937 / 背景米白 #FFF7ED / 辅助鼠尾草绿 #65A30D
   字体：Noto Sans SC（Google Fonts）→ 苹方/PingFang SC → 微软雅黑 fallback
   移动端优先（390px 基准），桌面端再放宽 */

:root{
  --orange:#F97316;
  --orange-dark:#EA6A0A;
  --ink:#1F2937;
  --ink-soft:#4B5563;
  --cream:#FFF7ED;
  --cream-deep:#FDEBD3;
  --sage:#65A30D;
  --white:#FFFFFF;
  --radius:14px;
  --shadow:0 2px 12px rgba(31,41,55,.08);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  background:var(--cream);
  color:var(--ink);
  font-size:16px;
  line-height:1.6;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;display:block}
a{color:var(--orange);text-decoration:none}
h1,h2,h3{line-height:1.3;font-weight:700}
h1{font-size:1.7rem}
h2{font-size:1.4rem;margin-bottom:.6rem}
h3{font-size:1.1rem}
p{margin:.5rem 0}
.small{font-size:.85rem;color:var(--ink-soft)}

.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
section{padding:44px 0}

/* 页眉 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid #F3E2C7;
  backdrop-filter:blur(6px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:1.05rem}
.brand img{width:40px;height:40px;border-radius:10px;background:var(--cream)}
.nav{display:flex;gap:4px;overflow-x:auto;padding:6px 0}
.nav a{
  color:var(--ink);font-size:.92rem;white-space:nowrap;
  padding:8px 12px;border-radius:8px;
}
.nav a:hover{background:var(--cream-deep)}
.nav a.active{color:var(--orange);font-weight:700}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:12px 26px;border-radius:10px;
  font-size:1rem;font-weight:700;cursor:pointer;border:0;
  transition:background .15s ease,transform .1s ease;
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark)}
.btn-primary:active{transform:scale(.98)}
.btn-secondary{background:var(--white);color:var(--orange);border:2px solid var(--orange)}
.btn-secondary:hover{background:var(--cream)}
.btn-block{width:100%}
.btn-sm{min-height:44px;padding:10px 18px;font-size:.92rem}

/* 手机底部吸底主按钮 */
.sticky-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.97);
  border-top:1px solid #F3E2C7;
}
@media (max-width:720px){
  .sticky-cta{display:block}
  body{padding-bottom:78px}
  .header-cta{display:none}
}

/* 首屏 */
.hero{padding:52px 0 36px;text-align:left}
.hero h1{font-size:1.75rem;margin-bottom:14px}
.hero h1 .hl{color:var(--orange)}
.hero-sub{color:var(--ink-soft);font-size:.95rem;margin:10px 0 20px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}
@media (max-width:720px){
  .hero-btns{flex-direction:column}
  .hero-btns .btn{width:100%}
}
.hero-cover{margin-top:22px}

/* 封面图占位：米白底 + 暖橙大字标题 + "封面图占位"标注
   TODO(二期): 替换为商家实拍调色图或正版图库图，不拿 AI 生成图冒充实拍 */
.cover-ph{
  position:relative;
  aspect-ratio:3/4;
  background:var(--cream-deep);
  border:2px dashed var(--orange);
  border-radius:var(--radius);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:20px;overflow:hidden;
}
.cover-ph .cover-title{color:var(--orange);font-weight:700;font-size:1.25rem;line-height:1.4}
.cover-ph .cover-tag{
  position:absolute;top:10px;right:10px;
  background:var(--ink);color:#fff;font-size:.72rem;
  padding:4px 10px;border-radius:20px;opacity:.85;
}
.cover-ph.wide{aspect-ratio:16/9}

/* 卡片 */
.card{
  background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;margin-bottom:18px;
}
.card h3{margin-bottom:8px}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media (min-width:720px){
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:1fr 1fr 1fr}
}

/* 样例卡 */
.sample-card{overflow:hidden}
.sample-meta{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{
  display:inline-block;font-size:.78rem;font-weight:700;
  padding:4px 12px;border-radius:20px;
  background:var(--cream-deep);color:var(--ink);
}
.chip.cat{background:var(--sage);color:#fff}
.sample-tags{font-size:.85rem;color:var(--ink-soft);margin:8px 0}
.sample-time{font-size:.85rem;color:var(--ink-soft);margin-bottom:12px}
.sample-time strong{color:var(--orange)}

/* 筛选 */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 26px}
.filter-btn{
  border:2px solid #EBD9BE;background:var(--white);color:var(--ink);
  border-radius:24px;padding:9px 20px;font-size:.92rem;font-weight:700;cursor:pointer;
}
.filter-btn.on{background:var(--orange);border-color:var(--orange);color:#fff}
.demo-note{
  background:#FFF4E0;border:1px solid #F5C86E;border-radius:10px;
  padding:14px 18px;font-size:.9rem;margin-bottom:24px;
}

/* 定价 */
.price-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:860px){.price-grid{grid-template-columns:repeat(4,1fr)}}
.price-card{position:relative;text-align:center;display:flex;flex-direction:column}
.price-card.featured{border:2px solid var(--orange)}
.price-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--orange);color:#fff;font-size:.78rem;font-weight:700;
  padding:4px 16px;border-radius:20px;white-space:nowrap;
}
.price{font-size:2rem;font-weight:700;color:var(--orange);margin:8px 0;font-family:Inter,'Noto Sans SC',sans-serif}
.price small{font-size:.85rem;color:var(--ink-soft);font-weight:400}
.price-card ul{list-style:none;text-align:left;margin:12px 0;flex:1}
.price-card li{padding:6px 0;font-size:.92rem;border-bottom:1px dashed #F3E2C7}
.price-card li:last-child{border-bottom:0}

/* 表单 */
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;margin-bottom:6px;font-size:.95rem}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border:2px solid #EBD9BE;border-radius:10px;
  font-size:1rem;font-family:inherit;background:#fff;color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);
}
.radio-cards{display:grid;gap:12px}
.radio-card{
  display:block;border:2px solid #EBD9BE;border-radius:12px;
  padding:16px;cursor:pointer;background:#fff;
}
.radio-card input{margin-right:8px}
.radio-card:has(input:checked){border-color:var(--orange);background:#FFF7ED}
.radio-card .rc-price{color:var(--orange);font-weight:700;font-size:1.15rem}

/* FAQ */
.faq-item{border-bottom:1px solid #F3E2C7;padding:18px 4px}
.faq-item h3{font-size:1.05rem;margin-bottom:8px;color:var(--ink)}
.faq-item h3::before{content:"Q ";color:var(--orange);font-weight:700}
.faq-item p{color:var(--ink-soft)}

/* 步骤 */
.steps{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:720px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.step .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--orange);color:#fff;font-weight:700;margin-bottom:10px;
}

/* 页脚 */
.site-footer{background:var(--ink);color:#E5E7EB;margin-top:40px}
.footer-inner{
  display:grid;gap:24px;grid-template-columns:1fr;
  padding:36px 0 20px;
}
@media (min-width:720px){.footer-inner{grid-template-columns:1.2fr 1fr 1fr}}
.site-footer h4{color:#fff;margin-bottom:10px;font-size:1rem}
.site-footer a{color:#FDBA74;font-size:.92rem}
.footer-links{list-style:none}
.footer-links li{margin:6px 0}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;margin-bottom:10px}
.footer-brand img{width:36px;height:36px;border-radius:8px;background:var(--cream)}
.footer-tag{font-size:.92rem;color:#D1D5DB}
.footer-fine{
  border-top:1px solid #374151;margin-top:8px;padding:16px 0 22px;
  font-size:.8rem;color:#9CA3AF;
}

/* 成功页 */
.success-box{text-align:center;padding:40px 20px}
.success-icon{
  width:72px;height:72px;border-radius:50%;background:var(--sage);
  color:#fff;font-size:2rem;display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.tally-wrap{margin-top:24px;text-align:left}
.tally-ph{
  border:2px dashed var(--orange);border-radius:var(--radius);
  background:#fff;padding:32px 20px;text-align:center;color:var(--ink-soft);
}

/* 博客 */
.post-list .card h3 a{color:var(--ink)}
.post-list .card h3 a:hover{color:var(--orange)}
.post-meta{font-size:.85rem;color:var(--ink-soft);margin-bottom:10px}
.article{max-width:760px}
.article h2{margin:28px 0 10px}
.article p{margin:12px 0;color:#374151}
.article ul{margin:12px 0 12px 22px;color:#374151}
.article li{margin:6px 0}
.cta-box{
  background:#fff;border:2px solid var(--orange);border-radius:var(--radius);
  padding:26px;margin:32px 0;text-align:center;
}
.cta-box h3{margin-bottom:8px}
.cta-box .hero-btns{justify-content:center}

/* 工具 */
.center{text-align:center}
.mt{margin-top:18px}
.notice{
  background:#fff;border-left:4px solid var(--sage);
  padding:12px 16px;border-radius:0 10px 10px 0;margin:16px 0;font-size:.92rem;
}
.divider{height:1px;background:#F3E2C7;margin:26px 0}