/* ===== DEVA SKINCARE — 清新鲜活护肤风 ===== */
:root {
  --mint: #5fae8f;
  --mint-dark: #4a9478;
  --mint-light: #eaf5f0;
  --gold: #c9a96b;
  --ink: #2b3a34;
  --gray: #7a8a83;
  --bg: #fbfdfc;
  --card: #ffffff;
  --line: #e6efeb;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(43, 58, 52, .07);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7; font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 760px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 22px; font-weight: 800; letter-spacing: 1px; color: var(--ink); }
.logo span { color: var(--mint); font-weight: 400; margin-left: 2px; }
.logo-light { color: #fff; }
.logo-light span { color: var(--gold); }
.nav { display: flex; gap: 6px; }
.nav a {
  padding: 8px 16px; border-radius: 20px; font-size: 15px; color: var(--gray);
  transition: all .2s;
}
.nav a:hover { color: var(--mint-dark); background: var(--mint-light); }
.nav a.active { color: #fff; background: var(--mint); }
.nav-toggle, .nav-burger { display: none; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--mint-light) 0%, #fdfbf6 55%, #f7efe2 100%);
  padding: 110px 0 120px; text-align: center;
}
.hero-tag { color: var(--gold); letter-spacing: 4px; font-size: 13px; font-weight: 600; margin-bottom: 18px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.25; letter-spacing: 2px; }
.hero-sub { margin: 22px auto 34px; max-width: 520px; color: var(--gray); font-size: 17px; }
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-block; padding: 12px 32px; border-radius: 28px;
  font-size: 15px; border: none; cursor: pointer; transition: all .25s;
}
.btn-primary { background: var(--mint); color: #fff; box-shadow: 0 4px 14px rgba(95,174,143,.35); }
.btn-primary:hover { background: var(--mint-dark); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--mint-dark); border: 1.5px solid var(--mint); }
.btn-ghost:hover { background: var(--mint-light); }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-alt { background: #f4f9f6; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 42px; flex-wrap: wrap; gap: 10px; }
.section-tag { color: var(--gold); font-size: 12px; letter-spacing: 3px; font-weight: 700; margin-bottom: 6px; }
.section-head h2, .page-hero h1 { font-size: 30px; letter-spacing: 1px; }
.section-more { color: var(--mint-dark); font-size: 14px; }
.section-more:hover { text-decoration: underline; }

/* ===== Page hero (内页头图) ===== */
.page-hero {
  background: linear-gradient(135deg, var(--mint-light), #fdfbf6);
  padding: 70px 0; text-align: center;
}
.page-hero p { color: var(--gray); margin-top: 8px; }

/* ===== Grid / Cards ===== */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

.value-card {
  background: var(--card); border-radius: var(--radius); padding: 36px 28px;
  text-align: center; box-shadow: var(--shadow); transition: transform .25s;
}
.value-card:hover { transform: translateY(-6px); }
.value-icon { font-size: 40px; margin-bottom: 14px; }
.value-card h3 { margin-bottom: 10px; font-size: 19px; }
.value-card p { color: var(--gray); font-size: 14.5px; }

/* ===== Product cards ===== */
.product-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s; display: block;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(43,58,52,.12); }
.product-ph {
  height: 210px; display: flex; align-items: center; justify-content: center;
}
.product-ph span { font-size: 52px; color: rgba(255,255,255,.9); font-weight: 700; }
.ph-1 { background: linear-gradient(135deg, #a8d8c0, #5fae8f); }
.ph-2 { background: linear-gradient(135deg, #cfe6d8, #8fc3a8); }
.ph-3 { background: linear-gradient(135deg, #e9dfc8, #c9a96b); }
.ph-4 { background: linear-gradient(135deg, #b7d9c9, #7ab89c); }
.product-info { padding: 20px 22px 24px; }
.product-cat { color: var(--gold); font-size: 12px; letter-spacing: 2px; font-weight: 600; margin-bottom: 6px; }
.product-info h3 { font-size: 17px; margin-bottom: 8px; }
.product-summary { color: var(--gray); font-size: 13.5px; }

/* ===== Product detail ===== */
.detail-section { padding-top: 60px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.detail-ph {
  height: 420px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.detail-ph span { font-size: 100px; color: rgba(255,255,255,.9); font-weight: 700; }
.detail-info h1 { font-size: 30px; margin: 6px 0 4px; }
.detail-en { color: var(--gray); font-size: 14px; font-style: italic; margin-bottom: 16px; }
.detail-summary { font-size: 16px; margin-bottom: 24px; }
.detail-block { background: var(--card); border-radius: var(--radius); padding: 22px 24px; margin-bottom: 16px; box-shadow: var(--shadow); }
.detail-block h3 { font-size: 16px; color: var(--mint-dark); margin-bottom: 8px; }
.detail-block p { color: var(--ink); font-size: 14.5px; }
.detail-info .btn { margin-top: 8px; }

/* ===== Filter bar ===== */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-chip {
  padding: 7px 20px; border-radius: 20px; font-size: 14px; color: var(--gray);
  background: var(--card); border: 1px solid var(--line); transition: all .2s;
}
.filter-chip:hover { color: var(--mint-dark); border-color: var(--mint); }
.filter-chip.active { background: var(--mint); color: #fff; border-color: var(--mint); }

/* ===== Articles ===== */
.article-card {
  background: var(--card); border-radius: var(--radius); padding: 30px 28px;
  box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px; transition: transform .25s;
}
.article-card:hover { transform: translateY(-6px); }
.article-date { color: var(--gold); font-size: 13px; letter-spacing: 1px; }
.article-card h3 { font-size: 18px; line-height: 1.5; }
.article-summary { color: var(--gray); font-size: 14px; flex: 1; }
.article-read { color: var(--mint-dark); font-size: 14px; }

.article-list { display: flex; flex-direction: column; gap: 18px; }
.article-row {
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  background: var(--card); border-radius: var(--radius); padding: 26px 30px;
  box-shadow: var(--shadow); transition: transform .2s;
}
.article-row:hover { transform: translateX(6px); }
.article-row h3 { font-size: 18px; margin-bottom: 6px; }
.article-row .article-date { white-space: nowrap; }

.article-detail h1 { font-size: 30px; margin: 8px 0 28px; line-height: 1.4; }
.article-body {
  background: var(--card); border-radius: var(--radius); padding: 36px 40px;
  box-shadow: var(--shadow); font-size: 16px; line-height: 2;
}
.article-body br + br { display: block; content: ""; margin-top: 12px; }
.article-back { margin-top: 30px; }

/* ===== About / Contact ===== */
.about-block h2 { font-size: 24px; margin-bottom: 18px; color: var(--mint-dark); }
.about-block p { margin-bottom: 14px; color: var(--ink); }
.about-block strong { color: var(--gold); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 44px; align-items: start; }
.contact-info { background: var(--mint-light); border-radius: var(--radius); padding: 36px 34px; }
.contact-info h2 { margin-bottom: 22px; font-size: 22px; }
.contact-info p { margin-bottom: 18px; }
.contact-info strong { color: var(--mint-dark); display: block; margin-bottom: 4px; }
.contact-note { color: var(--gray); font-size: 13.5px; }
.contact-form {
  background: var(--card); border-radius: var(--radius); padding: 36px 34px; box-shadow: var(--shadow);
}
.contact-form h2 { margin-bottom: 22px; font-size: 22px; }
.contact-form label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 16px; }
.contact-form input, .contact-form textarea {
  width: 100%; margin-top: 6px; padding: 11px 14px; border: 1px solid var(--line);
  border-radius: 10px; font-size: 15px; font-family: inherit; background: var(--bg); transition: border .2s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--mint); }
.form-msg { padding: 12px 16px; border-radius: 10px; font-size: 14px; margin-bottom: 18px; }
.form-msg.ok { background: var(--mint-light); color: var(--mint-dark); }
.form-msg.err { background: #fdeeee; color: #c0564f; }

/* ===== Empty tip ===== */
.empty-tip { text-align: center; color: var(--gray); padding: 40px 0; font-size: 15px; }
.empty-tip a { color: var(--mint-dark); text-decoration: underline; }

/* ===== Footer ===== */
.site-footer { background: #22332c; color: #b9c8c1; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 56px 20px 40px; }
.footer-brand p { font-size: 13.5px; margin-top: 12px; line-height: 1.9; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col a, .footer-col p { display: block; color: #b9c8c1; font-size: 14px; margin-bottom: 8px; }
.footer-col a:hover { color: var(--gold); }
.copyright {
  border-top: 1px solid rgba(255,255,255,.08); text-align: center;
  padding: 18px 20px; font-size: 13px; color: #8fa39b;
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .detail-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .article-row { flex-direction: column; align-items: flex-start; }
  .section { padding: 56px 0; }
  .nav {
    position: absolute; top: 64px; left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 12px 20px 18px; gap: 4px;
    border-bottom: 1px solid var(--line); display: none;
  }
  .nav a { padding: 12px 16px; }
  .nav-toggle:checked ~ .nav { display: flex; }
  .nav-burger { display: flex; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
  .nav-burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }

/* ===== 产品图（后台上传后前台显示）===== */
.product-ph.has-img, .detail-ph.has-img { padding: 0; overflow: hidden; }
.product-ph.has-img img, .detail-ph.has-img img { width: 100%; height: 100%; object-fit: cover; }
}