* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #ff6a00; --primary-d: #e85d00; --bg: #f5f6f8; --card: #fff;
  --text: #232930; --muted: #8a94a6; --border: #e8ebf0; --ok: #19be6b; --danger: #ed4014; --info: #2d8cf0;
}
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* header */
.header { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.header-in { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; gap: 24px; height: 60px; padding: 0 16px; }
.logo { display: flex; flex-direction: column; justify-content: center; line-height: 1.15; white-space: nowrap; }
.logo-name { font-size: 20px; font-weight: 800; color: var(--primary); }
.logo-name span { color: var(--text); }
.logo-slogan { font-size: 11px; color: var(--muted); font-weight: 400; letter-spacing: .5px; }
.nav { display: flex; gap: 20px; flex: 1; }
.nav a { color: #555; font-size: 15px; padding: 4px 0; }
.nav a:hover, .nav a.active { color: var(--primary); }
.header-right { display: flex; align-items: center; gap: 14px; }
.badge { background: var(--danger); color: #fff; border-radius: 10px; font-size: 11px; padding: 0 6px; margin-left: 4px; }
.role-switch { display: flex; border: 1px solid var(--primary); border-radius: 16px; overflow: hidden; font-size: 12px; }
.role-switch button { border: 0; background: #fff; color: var(--primary); padding: 4px 12px; cursor: pointer; }
.role-switch button.active { background: var(--primary); color: #fff; }

.container { max-width: 1180px; margin: 18px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 18px; margin-bottom: 16px; }
.row { display: flex; gap: 16px; }
.col { flex: 1; }
.muted { color: var(--muted); }
.tag { display: inline-block; background: #fff4ec; color: var(--primary); border: 1px solid #ffd9bf; border-radius: 4px;
  padding: 1px 8px; font-size: 12px; margin: 2px 4px 2px 0; }
.price { color: var(--danger); font-weight: 700; }
.price b { font-size: 20px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; border: 1px solid var(--primary);
  background: var(--primary); color: #fff; border-radius: 6px; padding: 8px 18px; font-size: 14px; cursor: pointer; transition: .15s; }
.btn:hover { background: var(--primary-d); }
.btn.ghost { background: #fff; color: var(--primary); }
.btn.gray { background: #fff; color: #555; border-color: var(--border); }
.btn.sm { padding: 4px 12px; font-size: 13px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.danger { background: var(--danger); border-color: var(--danger); }

/* forms */
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; }
.field .req { color: var(--danger); }
input[type=text], input[type=password], input[type=number], input[type=tel], select, textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 6px; padding: 9px 12px; font-size: 14px; font-family: inherit; }
textarea { min-height: 120px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); }
.inline { display: flex; gap: 10px; align-items: center; }
.radio-group label { display: inline-flex; align-items: center; gap: 4px; font-weight: 400; margin-right: 18px; cursor: pointer; }

/* demand grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.dcard { background: var(--card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; cursor: pointer; transition: .15s; display: flex; flex-direction: column; }
.dcard:hover { box-shadow: 0 6px 18px rgba(0,0,0,.08); transform: translateY(-2px); }
.dcard .cover { height: 130px; background: #f0f2f5 center/cover; display: flex; flex-direction: column; gap: 6px; align-items: center; justify-content: center; color: #b8c0cc; font-size: 13px; }
.cat-ico { width: 42px; height: 42px; }
.cat-ico-label { font-size: 12px; color: #aab2bf; }
.cat-chips a { display: inline-flex; align-items: center; gap: 5px; }
.cat-chips .cat-ico { width: 16px; height: 16px; }

/* 信任背书区 */
.trust-strip { display: flex; gap: 14px; margin-bottom: 16px; }
.trust-item { flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px; display: flex; gap: 12px; align-items: flex-start; }
.trust-ico { width: 40px; height: 40px; border-radius: 10px; background: #fff4ec; color: var(--primary); display: flex; align-items: center; justify-content: center; flex: none; }
.trust-ico .cat-ico { width: 22px; height: 22px; }
.trust-item h4 { font-size: 15px; margin-bottom: 3px; }
.trust-item p { font-size: 12px; color: var(--muted); line-height: 1.6; }
@media (max-width: 640px) { .trust-strip { flex-wrap: wrap; } .trust-item { min-width: 44%; } }
.dcard .body { padding: 12px 14px; flex: 1; display: flex; flex-direction: column; }
.dcard h4 { font-size: 15px; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 44px; }
.dcard .meta { display: flex; justify-content: space-between; align-items: center; margin-top: auto; font-size: 12px; color: var(--muted); }

.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 18px; }
.pagination button { border: 1px solid var(--border); background: #fff; padding: 6px 12px; border-radius: 4px; cursor: pointer; }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* sidebar layout */
.layout { display: flex; gap: 16px; align-items: flex-start; }
.sidebar { width: 200px; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 10px 0; flex-shrink: 0; }
.sidebar .group { padding: 8px 16px 4px; color: var(--muted); font-size: 12px; }
.sidebar a { display: block; padding: 9px 18px; color: #444; cursor: pointer; }
.sidebar a:hover { background: #f7f8fa; }
.sidebar a.active { color: var(--primary); background: #fff4ec; border-right: 3px solid var(--primary); font-weight: 600; }
.main { flex: 1; min-width: 0; }

/* table */
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { border-bottom: 1px solid var(--border); padding: 10px 12px; text-align: left; font-size: 13px; vertical-align: middle; }
th { background: #fafbfc; color: #666; font-weight: 600; }
.status { display: inline-block; padding: 1px 9px; border-radius: 10px; font-size: 12px; }
.s-pending { background: #fff7e6; color: #d48806; } .s-published { background: #e6fffb; color: #08979c; }
.s-completed { background: #f6ffed; color: #389e0d; } .s-rejected,.s-cancelled,.s-dispute { background: #fff1f0; color: #cf1322; }
.s-developing,.s-ordered,.s-await_confirm,.s-to_accept,.s-to_deliver { background: #e6f7ff; color: #096dd9; }
.s-draft,.s-offline { background: #f0f0f0; color: #888; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tabs button { border: 0; background: none; padding: 8px 14px; cursor: pointer; color: #666; border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* modal & toast */
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: #fff; border-radius: 10px; padding: 24px; width: 420px; max-width: 92vw; max-height: 88vh; overflow: auto; }
.modal h3 { margin-bottom: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
#toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast { background: #333; color: #fff; padding: 10px 20px; border-radius: 6px; animation: fade .3s; }
.toast.ok { background: var(--ok); } .toast.err { background: var(--danger); }
@keyframes fade { from { opacity: 0; transform: translateY(-8px); } }

.thumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.thumb { width: 90px; height: 90px; border: 1px solid var(--border); border-radius: 6px; object-fit: cover; position: relative; }
.thumb-wrap { position: relative; }
.thumb-wrap .del { position: absolute; top: -6px; right: -6px; background: var(--danger); color: #fff; border-radius: 50%; width: 20px; height: 20px; border: 0; cursor: pointer; }
.file-item { display: flex; justify-content: space-between; align-items: center; padding: 6px 10px; border: 1px solid var(--border); border-radius: 4px; margin-top: 6px; }

/* chat */
.chat { display: flex; height: 600px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: #fff; }
.chat-list { width: 260px; border-right: 1px solid var(--border); overflow-y: auto; }
.chat-list .item { padding: 12px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.chat-list .item:hover, .chat-list .item.active { background: #f7f8fa; }
.chat-main { flex: 1; display: flex; flex-direction: column; }
.chat-msgs { flex: 1; overflow-y: auto; padding: 16px; background: #f7f8fa; }
.msg { margin-bottom: 14px; display: flex; }
.msg .bubble { max-width: 70%; padding: 8px 12px; border-radius: 8px; background: #fff; }
.msg.me { justify-content: flex-end; }
.msg.me .bubble { background: #ffe6d2; }
.chat-input { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.chat-input input { flex: 1; }
.hero { background: linear-gradient(120deg, #ff8a3d, #ff6a00); color: #fff; border-radius: 10px; padding: 36px; margin-bottom: 18px; }
.hero h1 { font-size: 28px; margin-bottom: 8px; }
.cat-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-chips a { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 5px 14px; cursor: pointer; }
.cat-chips a:hover { border-color: var(--primary); color: var(--primary); }
.stat-row { display: flex; gap: 16px; }
.stat-row .card { flex: 1; text-align: center; }
.stat-row .num { font-size: 30px; font-weight: 800; color: var(--primary); }
.empty { text-align: center; color: var(--muted); padding: 50px 0; }
.rich-toolbar { display: flex; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.rich-toolbar button { border: 1px solid var(--border); background: #fff; border-radius: 4px; padding: 3px 9px; cursor: pointer; }
.rich-editor { min-height: 180px; border: 1px solid var(--border); border-radius: 6px; padding: 12px; overflow-y: auto; }
.rich-editor:focus { outline: none; border-color: var(--primary); }
/* 首页双入口引导 */
.dual-entry { display: flex; gap: 16px; margin-bottom: 18px; }
.entry-card { flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 22px; transition: .15s; }
.entry-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.06); }
.entry-head { display: flex; align-items: center; gap: 10px; }
.entry-ico { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; flex: none; }
.entry-ico svg { width: 24px; height: 24px; }
.entry-ico.orange { background: #fff4ec; color: var(--primary); }
.entry-ico.green { background: #eafff3; color: var(--ok); }
.entry-card h3 { margin: 12px 0 8px; font-size: 18px; }
.entry-card p { color: var(--muted); margin-bottom: 16px; min-height: 60px; line-height: 1.7; }
.entry-tag { display: inline-block; background: #fff4ec; color: var(--primary); border-radius: 4px; padding: 2px 10px; font-size: 13px; font-weight: 600; }
.entry-tag.green { background: #eafff3; color: var(--ok); }
@media (max-width: 640px) { .dual-entry { flex-direction: column; } .entry-card p { min-height: 0; } }

/* 开发者主页：统计/徽章/动态/作品 */
.profile-stats { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.ps-item { flex: 1; min-width: 80px; background: #fafbfc; border: 1px solid var(--border); border-radius: 8px; padding: 10px; text-align: center; }
.ps-num { font-size: 20px; font-weight: 800; color: var(--primary); }
.badge-tag { display: inline-block; border-radius: 4px; padding: 1px 8px; font-size: 12px; margin-right: 5px; }
.badge-tag.gold { background: #fff7e6; color: #d48806; } .badge-tag.blue { background: #e6f7ff; color: #096dd9; }
.badge-tag.green { background: #f6ffed; color: #389e0d; } .badge-tag.orange { background: #fff4ec; color: var(--primary); }
.badge-tag.gray { background: #f0f0f0; color: #888; }
.badge-tag.official { background: linear-gradient(135deg, #ff9a2e, #ff5e00); color: #fff; font-weight: 600; }
.chip { border: 1px solid var(--border); background: #fff; color: #555; border-radius: 16px; padding: 5px 16px; font-size: 13px; cursor: pointer; }
.chip.active { border-color: var(--primary); background: var(--primary); color: #fff; }
.dcard .cover { position: relative; }
.dcard .cover .badge-tag.official { position: absolute; top: 8px; left: 8px; margin: 0; box-shadow: 0 2px 6px rgba(255,94,0,.4); }
.post-item { border-bottom: 1px solid var(--border); padding: 10px 0; }
.works-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.work-card { border: 1px solid var(--border); border-radius: 8px; padding: 12px; }
.work-cover { height: 110px; background: #f0f2f5 center/cover; border-radius: 6px; margin-bottom: 8px; }
.work-card h4 { font-size: 14px; margin-bottom: 4px; }
.work-card p { font-size: 12px; margin-bottom: 6px; }

/* 首页开发者动态流 */
.feed-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feed-card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 14px; cursor: pointer; transition: .15s; }
.feed-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.08); transform: translateY(-2px); }
.feed-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 13px; margin-right: 8px; }
.feed-content { font-size: 13px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; }
.feed-imgs { display: flex; gap: 4px; }
.feed-img { flex: 1; height: 50px; background: #f0f2f5 center/cover; border-radius: 4px; }
@media (max-width: 920px) { .feed-grid { grid-template-columns: repeat(2,1fr); } .works-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px) { .feed-grid { grid-template-columns: 1fr; } .works-grid { grid-template-columns: 1fr; } }

/* 管理后台证书到期横幅 */
.cert-banner { padding: 10px 16px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }
.cert-banner.ok { background: #f6ffed; color: #389e0d; border: 1px solid #b7eb8f; }
.cert-banner.warn { background: #fff7e6; color: #d46b08; border: 1px solid #ffd591; }
.cert-banner.danger { background: #fff1f0; color: #cf1322; border: 1px solid #ffa39e; }

/* SEO 静态页脚 */
.site-footer { background: #1f2733; color: #c2cad6; margin-top: 40px; }
.footer-in { max-width: 1180px; margin: 0 auto; padding: 32px 16px; display: flex; gap: 40px; flex-wrap: wrap; }
.footer-col { flex: 1; min-width: 200px; }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.footer-brand span { color: var(--primary); }
.footer-col p { font-size: 13px; line-height: 1.8; color: #97a1b0; }
.footer-col h4 { color: #fff; margin-bottom: 12px; font-size: 15px; }
.footer-col a { display: inline-block; color: #97a1b0; font-size: 13px; margin: 0 14px 8px 0; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid #2c3645; text-align: center; padding: 16px; font-size: 12px; color: #6b7484; }

@media (max-width: 920px) { .grid { grid-template-columns: repeat(2,1fr); } .nav { display: none; } }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } .layout { flex-direction: column; } .sidebar { width: 100%; } .footer-in { gap: 20px; }
  .row { flex-direction: column; }
  .header-in { gap: 8px; padding: 0 10px; } .header-right { gap: 8px; } .logo-slogan { display: none; } }