/* =====================================================
 * 三九生物 - 保健食品信息发布平台 / 全站样式
 * 设计原则：扁平、专业、原生设计、无 Emoji、SVG 图标
 * ===================================================== */
:root {
  --c-primary: #1e6b4a;
  --c-primary-dark: #155a3d;
  --c-primary-soft: #e8f0ea;
  --c-accent: #b08d3a;
  --c-accent-soft: #f3e9d2;
  --c-text: #1f2937;
  --c-text-soft: #4b5563;
  --c-muted: #6b7280;
  --c-border: #e5e7eb;
  --c-border-soft: #f0eee9;
  --c-bg: #faf8f4;
  --c-bg-card: #ffffff;
  --c-danger: #b54545;
  --c-success: #1e6b4a;
  --shadow-sm: 0 1px 2px rgba(20, 40, 30, .04);
  --shadow-md: 0 4px 16px rgba(20, 40, 30, .06);
  --radius: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Heiti SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--c-primary-dark); text-decoration: none; transition: color .15s; }
a:hover { color: var(--c-primary); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { color: var(--c-text); margin: 0 0 .6em; line-height: 1.3; }
h1 { font-size: 30px; font-weight: 600; }
h2 { font-size: 22px; font-weight: 600; }
h3 { font-size: 18px; font-weight: 600; }
p { margin: 0 0 1em; }
button { font-family: inherit; cursor: pointer; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
}
.site-header .inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--c-text); }
.brand:hover { color: var(--c-text); }
.brand .logo-mark { width: 42px; height: 42px; flex-shrink: 0; }
.brand .name {
  font-size: 20px; font-weight: 600; letter-spacing: 1px;
  color: var(--c-primary-dark);
}
.brand .tagline {
  font-size: 12px; color: var(--c-muted); margin-left: 4px; letter-spacing: .5px;
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px; border-radius: var(--radius-sm);
  color: var(--c-text-soft); font-size: 15px;
}
.nav a:hover { background: var(--c-primary-soft); color: var(--c-primary-dark); }
.nav a.active { background: var(--c-primary-soft); color: var(--c-primary-dark); font-weight: 500; }
.user-area { display: flex; align-items: center; gap: 10px; margin-left: 12px; }
.user-area .who { color: var(--c-muted); font-size: 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 18px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-size: 14px; font-weight: 500; transition: all .15s;
  background: #fff; color: var(--c-text); border-color: var(--c-border);
}
.btn:hover { border-color: var(--c-primary); color: var(--c-primary-dark); }
.btn-primary {
  background: var(--c-primary); color: #fff; border-color: var(--c-primary);
}
.btn-primary:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--c-primary-dark); }
.btn-ghost:hover { background: var(--c-primary-soft); }
.btn-danger { background: #fff; color: var(--c-danger); border-color: #e7c9c9; }
.btn-danger:hover { background: #fbecec; border-color: var(--c-danger); }
.btn-success { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.btn-success:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }

/* ---------- footer ---------- */
.site-footer {
  margin-top: 60px;
  background: #1f2a26; color: #c9d1ce;
}
.site-footer .inner {
  max-width: 1200px; margin: 0 auto; padding: 40px 24px 24px;
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 36px;
}
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; font-weight: 500; }
.site-footer p { color: #9aa6a2; font-size: 13.5px; line-height: 1.8; margin: 0; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 8px; }
.site-footer ul a { color: #c9d1ce; font-size: 13.5px; }
.site-footer ul a:hover { color: #fff; }
.site-footer .contact-block { display: flex; flex-direction: column; gap: 6px; }
.site-footer .contact-block .contact-line {
  display: flex; align-items: flex-start; gap: 10px;
  color: #c9d1ce; font-size: 13.5px; margin: 0; line-height: 1.7;
  word-break: break-all;
}
.site-footer .contact-block .contact-label {
  color: #9aa6a2; flex-shrink: 0; min-width: 36px;
}
.site-footer .bottom {
  border-top: 1px solid #2c3833;
  max-width: 1200px; margin: 0 auto;
  padding: 16px 24px; font-size: 12.5px; color: #7e8a86;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.site-footer .beian {
  color: #c9d1ce;
}
.site-footer .beian a { color: #c9d1ce; }
.site-footer .beian a:hover { color: #fff; }
.site-footer .icon-shield { color: #d44a3a; }

/* ---------- container / layout ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 40px 0 10px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.section-head h2 { margin: 0; }
.section-head .more { color: var(--c-muted); font-size: 14px; }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(180deg, #f0ece1 0%, #faf8f4 100%);
  border-bottom: 1px solid var(--c-border-soft);
}
.hero .inner { max-width: 1200px; margin: 0 auto; padding: 70px 24px 56px; }
.hero h1 { font-size: 38px; font-weight: 600; color: var(--c-primary-dark); margin-bottom: 14px; }
.hero .lead { color: var(--c-text-soft); font-size: 17px; max-width: 720px; margin-bottom: 26px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .badge-row { display: flex; gap: 14px; margin-top: 22px; flex-wrap: wrap; }
.hero .badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; border: 1px solid var(--c-border);
  padding: 6px 12px; border-radius: 999px;
  color: var(--c-text-soft); font-size: 13px;
}
.hero .badge svg { color: var(--c-primary); }

/* ---------- category grid ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 540px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
.cat-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px 14px; text-align: center; transition: all .15s;
  color: var(--c-text);
}
.cat-card:hover { border-color: var(--c-primary); box-shadow: var(--shadow-md); transform: translateY(-1px); color: var(--c-text); }
.cat-card .icon-wrap {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 10px;
}
.cat-card .icon-wrap svg { width: 26px; height: 26px; }
.cat-card .name { font-size: 15px; font-weight: 500; color: var(--c-text); }
.cat-card .count { font-size: 12px; color: var(--c-muted); margin-top: 2px; }

/* ---------- listing card ---------- */
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .list-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .list-grid { grid-template-columns: 1fr; } }
.card {
  background: var(--c-bg-card); border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; transition: all .15s; display: flex; flex-direction: column;
}
.card:hover { box-shadow: var(--shadow-md); border-color: #d6d2c8; }
.card .img-wrap {
  aspect-ratio: 4/3; background: #f0eee9; overflow: hidden; position: relative;
}
.card .img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.card .img-wrap .placeholder {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #b8b3a6; font-size: 13px;
}
.card .body { padding: 16px 18px 18px; flex: 1; display: flex; flex-direction: column; }
.card .meta {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 12px; color: var(--c-muted);
}
.card .meta .cat {
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  padding: 2px 8px; border-radius: 4px; font-size: 11.5px;
}
.card .title {
  font-size: 16px; font-weight: 600; color: var(--c-text); margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  line-height: 1.45;
}
.card .summary { font-size: 13.5px; color: var(--c-text-soft); margin-bottom: 12px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card .foot {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12.5px; color: var(--c-muted); border-top: 1px solid var(--c-border-soft); padding-top: 10px;
}
.card .foot .view-count { color: var(--c-muted); display: inline-flex; align-items: center; gap: 4px; }

/* ---------- badges ---------- */
.badge-pill {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 4px; font-size: 12px;
}
.badge-audit {
  background: var(--c-primary-soft); color: var(--c-primary-dark);
}
.badge-audit svg { width: 12px; height: 12px; }
.badge-pending {
  background: var(--c-accent-soft); color: var(--c-accent);
}
.badge-rejected {
  background: #f7e2e2; color: var(--c-danger);
}

/* ---------- filter bar ---------- */
.filter-bar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 14px 18px; margin-bottom: 24px;
}
.filter-bar .cat-tabs { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.filter-bar .cat-tabs .tab {
  padding: 6px 14px; border-radius: 999px; font-size: 13.5px;
  background: transparent; border: 1px solid transparent; color: var(--c-text-soft);
  cursor: pointer;
}
.filter-bar .cat-tabs .tab:hover { color: var(--c-primary-dark); }
.filter-bar .cat-tabs .tab.active {
  background: var(--c-primary); color: #fff;
}
.filter-bar .search {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  padding: 6px 10px; min-width: 220px;
}
.filter-bar .search input {
  border: none; outline: none; font-size: 14px; flex: 1;
  background: transparent; color: var(--c-text); font-family: inherit;
}
.filter-bar .search svg { color: var(--c-muted); }

/* ---------- detail page ---------- */
.detail-wrap { display: grid; grid-template-columns: 1fr 320px; align-items: start; }
@media (max-width: 900px) { .detail-wrap { grid-template-columns: 1fr; } }
.crumbs { font-size: 13px; color: var(--c-muted); margin: 20px 0 14px; }
.crumbs a { color: var(--c-muted); }
.crumbs a:hover { color: var(--c-primary-dark); }
.crumbs .sep { margin: 0 8px; color: #d0ccc2; }

.detail-main { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; }
.detail-main .hero-img { aspect-ratio: 4/3; background: #f4f1ea; overflow: hidden; }
.detail-main .hero-img img { width: 100%; height: 100%; object-fit: cover; }
.detail-main .head { padding: 24px 28px 18px; border-bottom: 1px solid var(--c-border-soft); }
.detail-main .head .top-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.detail-main h1 { font-size: 26px; font-weight: 600; margin-bottom: 10px; }
.detail-main .meta-row { color: var(--c-muted); font-size: 13px; display: flex; gap: 16px; flex-wrap: wrap; }
.detail-main .meta-row .m { display: inline-flex; align-items: center; gap: 4px; }
.detail-main .body { padding: 24px 28px 28px; }
.detail-main .body h3 { margin-top: 22px; font-size: 16px; color: var(--c-primary-dark); }
.detail-main .body h3:first-child { margin-top: 0; }
.detail-main .body p { color: var(--c-text-soft); }
.info-table {
  width: 100%; border-collapse: collapse; margin: 8px 0 6px;
  border: 1px solid var(--c-border-soft); border-radius: var(--radius-sm); overflow: hidden;
}
.info-table th, .info-table td {
  text-align: left; padding: 12px 16px; font-size: 14px; vertical-align: top;
  border-bottom: 1px solid var(--c-border-soft);
}
.info-table th {
  background: #faf8f4; color: var(--c-text-soft); font-weight: 500; width: 110px;
}
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: none; }
.compliance-note-text {
  margin-top: 22px; padding: 14px 16px;
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  border-radius: var(--radius-sm); font-size: 13.5px;
  line-height: 1.7;
}

.contact-card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px 24px; margin-left: 20px; position: sticky; top: 86px;
}
@media (max-width: 900px) { .contact-card { margin-left: 0; margin-top: 18px; position: static; } }
.contact-card h3 { font-size: 16px; margin-bottom: 14px; color: var(--c-primary-dark); }
.contact-card .row { margin-bottom: 10px; font-size: 14px; }
.contact-card .label { color: var(--c-muted); font-size: 12.5px; margin-bottom: 2px; }
.contact-card .v { color: var(--c-text); }
.contact-card .login-hint {
  margin-top: 10px; padding-top: 14px; border-top: 1px dashed var(--c-border);
  font-size: 13px; color: var(--c-muted);
}
.contact-card .login-hint a { color: var(--c-primary-dark); font-weight: 500; }

/* ---------- forms ---------- */
.form-card {
  max-width: 560px; margin: 40px auto; background: #fff;
  border: 1px solid var(--c-border); border-radius: var(--radius); padding: 36px 40px;
  box-shadow: var(--shadow-sm);
}
.form-card h1 { font-size: 24px; text-align: center; margin-bottom: 8px; }
.form-card .sub { text-align: center; color: var(--c-muted); margin-bottom: 26px; font-size: 14px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13.5px; color: var(--c-text-soft); margin-bottom: 6px; }
.form-row label .req { color: var(--c-danger); margin-left: 2px; }
.form-row input[type=text], .form-row input[type=password], .form-row input[type=email],
.form-row input[type=tel], .form-row textarea, .form-row select {
  width: 100%; padding: 10px 12px; font-size: 14px; font-family: inherit;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  background: #fff; color: var(--c-text); transition: border-color .15s;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none; border-color: var(--c-primary);
}
.form-row textarea { resize: vertical; min-height: 88px; }
.form-row .hint { font-size: 12.5px; color: var(--c-muted); margin-top: 4px; }
.form-actions { margin-top: 22px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.form-actions .btn { min-width: 110px; }
.checkbox-row { display: flex; align-items: flex-start; gap: 8px; margin: 8px 0; font-size: 13.5px; color: var(--c-text-soft); }
.checkbox-row input[type=checkbox] { margin-top: 4px; }
.checkbox-row a { color: var(--c-primary-dark); }
.alt-link { text-align: center; margin-top: 18px; font-size: 13.5px; color: var(--c-muted); }
.alt-link a { color: var(--c-primary-dark); }

.publish-form .row-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 600px) { .publish-form .row-grid { grid-template-columns: 1fr; } }
.image-uploader {
  border: 1px dashed var(--c-border); border-radius: var(--radius-sm); padding: 16px;
  display: flex; align-items: center; gap: 14px;
}
.image-uploader .preview {
  width: 96px; height: 96px; background: #f4f1ea; border-radius: var(--radius-sm);
  overflow: hidden; display: flex; align-items: center; justify-content: center;
  color: #b8b3a6;
}
.image-uploader .preview img { width: 100%; height: 100%; object-fit: cover; }
.image-uploader .info { flex: 1; }
.image-uploader .info .filename { font-size: 13px; color: var(--c-text-soft); margin-top: 4px; word-break: break-all; }
.msg { padding: 10px 14px; border-radius: var(--radius-sm); font-size: 14px; margin: 10px 0; }
.msg.ok { background: var(--c-primary-soft); color: var(--c-primary-dark); }
.msg.err { background: #fbecec; color: var(--c-danger); }

/* ---------- admin ---------- */
.admin-tabs { display: flex; gap: 4px; margin-bottom: 18px; border-bottom: 1px solid var(--c-border); }
.admin-tabs .tab {
  padding: 10px 18px; cursor: pointer; font-size: 14px; color: var(--c-text-soft);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.admin-tabs .tab.active { color: var(--c-primary-dark); border-color: var(--c-primary); font-weight: 500; }
.admin-tabs .tab .num {
  background: var(--c-accent-soft); color: var(--c-accent);
  border-radius: 999px; padding: 1px 7px; font-size: 12px; margin-left: 4px;
}
.admin-list { display: flex; flex-direction: column; gap: 12px; }
.admin-item {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 18px 22px; display: grid; grid-template-columns: 90px 1fr auto; gap: 18px; align-items: center;
}
@media (max-width: 720px) { .admin-item { grid-template-columns: 70px 1fr; } .admin-item .actions { grid-column: 1 / -1; } }
.admin-item .thumb { width: 90px; height: 90px; background: #f4f1ea; border-radius: var(--radius-sm); overflow: hidden; }
.admin-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.admin-item .info .t { font-size: 15px; font-weight: 500; color: var(--c-text); margin-bottom: 6px; }
.admin-item .info .m { color: var(--c-muted); font-size: 13px; line-height: 1.7; }
.admin-item .info .m .sep { margin: 0 8px; color: #d0ccc2; }
.admin-item .actions { display: flex; gap: 8px; }
.admin-empty { background: #fff; border: 1px dashed var(--c-border); padding: 40px; text-align: center; color: var(--c-muted); border-radius: var(--radius); }

/* ---------- about / long text ---------- */
.long-article { max-width: 860px; margin: 0 auto; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 44px 52px; }
@media (max-width: 600px) { .long-article { padding: 28px 22px; } }
.long-article h1 { font-size: 26px; margin-bottom: 10px; }
.long-article .update { color: var(--c-muted); font-size: 13px; margin-bottom: 26px; }
.long-article h2 { font-size: 17px; margin-top: 28px; color: var(--c-primary-dark); }
.long-article p { color: var(--c-text-soft); }
.long-article ol, .long-article ul { padding-left: 22px; color: var(--c-text-soft); }
.long-article li { margin-bottom: 6px; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: stretch; }
@media (max-width: 760px) { .about-grid { grid-template-columns: 1fr; } }
.about-grid .pane { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 30px 32px; }
.about-grid .pane h2 { margin-top: 0; }
.about-grid .pane p { color: var(--c-text-soft); }

/* ---------- toast ---------- */
.toast-wrap { position: fixed; top: 80px; right: 24px; z-index: 1000; display: flex; flex-direction: column; gap: 10px; }
.toast {
  padding: 10px 16px; border-radius: var(--radius-sm);
  background: #fff; border: 1px solid var(--c-border);
  box-shadow: var(--shadow-md); font-size: 14px;
  min-width: 220px;
}
.toast.ok { border-left: 3px solid var(--c-success); }
.toast.err { border-left: 3px solid var(--c-danger); }

/* ---------- misc ---------- */
.text-muted { color: var(--c-muted); }
.mt-2 { margin-top: 14px; }
.mt-3 { margin-top: 22px; }
.mb-2 { margin-bottom: 14px; }
.flex-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.empty-state {
  background: #fff; border: 1px dashed var(--c-border);
  padding: 60px 30px; text-align: center; color: var(--c-muted); border-radius: var(--radius);
}
.empty-state svg { color: #d0ccc2; margin-bottom: 10px; }