/* ===== 创汇 AI信息撮合平台 样式 ===== */
:root{
  --bg:#f6f7fb;
  --bg2:#eef0f7;
  --card:#ffffff;
  --glass:rgba(255,255,255,.72);
  --glass-strong:rgba(255,255,255,.88);
  --text:#1a1d29;
  --text-2:#5b6172;
  --muted:#8a90a2;
  --line:#e7e9f0;
  --primary:#6366f1;
  --primary-d:#4f46e5;
  --primary-soft:rgba(99,102,241,.10);
  --accent:#22c55e;
  --warn:#f59e0b;
  --danger:#ef4444;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(31,38,80,.08);
  --shadow-lg:0 18px 60px rgba(31,38,80,.14);
  --maxw:1180px;
  --nav-h:64px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(99,102,241,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(34,197,94,.08), transparent 55%),
    linear-gradient(180deg,var(--bg),var(--bg2));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0 0 .4em;font-weight:700;line-height:1.3;letter-spacing:.2px}
p{margin:0 0 .8em}
.muted{color:var(--muted)}
.small{font-size:13px}
em{font-style:normal}

/* ===== 导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;
  background:var(--glass-strong);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s,background .3s;
}
.nav.scrolled{box-shadow:0 6px 24px rgba(31,38,80,.08)}
.nav-inner{max-width:var(--maxw);height:100%;margin:0 auto;padding:0 22px;display:flex;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;font-size:18px;
  box-shadow:0 6px 16px rgba(99,102,241,.35)
}
.logo-text em{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.5px}
.logo.small{font-size:16px}
.nav-links{display:flex;gap:6px;margin-left:14px;flex:1}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--text-2);
  transition:.2s;font-weight:500
}
.nav-links a:hover{background:var(--primary-soft);color:var(--primary-d)}
.nav-links a.active{background:var(--primary);color:#fff}
.nav-actions{display:flex;gap:8px;align-items:center}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ===== 按钮 ===== */
.btn{
  appearance:none;border:0;cursor:pointer;font-family:inherit;font-size:14.5px;font-weight:600;
  padding:10px 18px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  text-align:center;transition:transform .15s,box-shadow .2s,background .2s,opacity .2s;white-space:nowrap
}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(135deg,var(--primary),#7c83ff);color:#fff;box-shadow:0 8px 20px rgba(99,102,241,.32)}
.btn.primary:hover{box-shadow:0 10px 26px rgba(99,102,241,.42)}
.btn.ghost{background:rgba(255,255,255,.6);color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{background:#fff;border-color:var(--primary);color:var(--primary-d)}
.btn.dark{background:var(--text);color:#fff}
.btn.success{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff}
.btn.warn{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}
.btn.danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed}

/* ===== 通用布局 ===== */
.wrap{max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 28px) 22px 60px}
.section{padding:46px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.section-head h2{font-size:26px}
.section-head .sub{color:var(--muted);font-size:14px}
.tag-eyebrow{display:inline-block;color:var(--primary-d);font-weight:600;font-size:13px;letter-spacing:1px;text-transform:uppercase;margin-bottom:8px}

/* ===== Hero ===== */
.hero{
  max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 56px) 22px 40px;text-align:center;
}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.15;margin-bottom:16px}
.hero h1 .grad{background:linear-gradient(135deg,var(--primary),#8b5cf6 60%,#22c55e);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:var(--text-2);max-width:680px;margin:0 auto 26px}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;justify-content:center;margin-top:42px;flex-wrap:wrap}
.hero-stats .stat{text-align:center}
.hero-stats .num{font-size:30px;font-weight:800;color:var(--primary-d)}
.hero-stats .lab{color:var(--muted);font-size:13px}
.hero-blob{position:absolute;border-radius:50%;filter:blur(40px);opacity:.5;z-index:-1}

/* ===== 卡片/玻璃 ===== */
.glass{
  background:var(--glass);
  border:1px solid rgba(255,255,255,.6);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;overflow:hidden
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

/* ===== 设计师网格 ===== */
.grid{display:grid;gap:20px}
.grid.designers{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.grid.demands{grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid.cols-3,.grid.cols-4,.grid.designers,.grid.demands{grid-template-columns:1fr}}

.designer-card{cursor:pointer;display:flex;flex-direction:column}
.designer-cover{aspect-ratio:4/3;background:linear-gradient(135deg,#e0e7ff,#fce7f3);overflow:hidden;position:relative}
.designer-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.designer-card:hover .designer-cover img{transform:scale(1.06)}
.designer-body{padding:16px 16px 18px}
.designer-name{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px}
.designer-title{color:var(--muted);font-size:13px;margin-top:2px}
.designer-bio{color:var(--text-2);font-size:13.5px;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary-d);font-weight:500}
.chip.alt{background:#f1f3f9;color:var(--text-2)}
.designer-foot{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:12px;color:var(--muted)}

/* ===== 需求卡 ===== */
.demand-card{cursor:pointer;display:flex;flex-direction:column;padding:18px}
.demand-cat{font-size:12px;color:var(--primary-d);font-weight:600;background:var(--primary-soft);padding:3px 10px;border-radius:999px;align-self:flex-start}
.demand-title{font-size:16.5px;font-weight:700;margin:10px 0 8px;line-height:1.4}
.demand-desc{color:var(--text-2);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.demand-meta{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:13px}
.demand-budget{color:#16a34a;font-weight:700}

/* ===== 工具条 ===== */
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:22px}
.search{flex:1;min-width:220px;position:relative}
.search input{
  width:100%;padding:12px 16px 12px 42px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-family:inherit;font-size:14.5px;color:var(--text);transition:.2s
}
.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--muted)}
.select{padding:12px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-family:inherit;font-size:14px;color:var(--text);cursor:pointer}
.select:focus{outline:none;border-color:var(--primary)}

/* ===== 详情页 ===== */
.detail{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
@media(max-width:900px){.detail{grid-template-columns:1fr}}
.detail-main{padding:24px}
.detail-side{padding:22px;align-self:start;position:sticky;top:calc(var(--nav-h) + 16px)}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
.gallery .gitem{border-radius:var(--radius-sm);overflow:hidden;background:var(--bg2);cursor:pointer;position:relative}
.gallery .gitem img{width:100%;aspect-ratio:1;object-fit:cover;transition:transform .3s}
.gallery .gitem:hover img{transform:scale(1.05)}
.gallery .gitem .gcap{position:absolute;left:0;right:0;bottom:0;padding:8px 10px;font-size:12px;color:#fff;background:linear-gradient(180deg,transparent,rgba(0,0,0,.6))}
.contact-box h4{font-size:15px;margin-bottom:6px}
.contact-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.contact-row:last-child{border-bottom:0}
.contact-row .k{color:var(--muted)}
.contact-row .v{font-weight:600;display:flex;align-items:center;gap:8px;word-break:break-all;text-align:right}
.copy-btn{background:none;border:0;cursor:pointer;color:var(--primary-d);font-size:12px;padding:4px 8px;border-radius:6px}
.copy-btn:hover{background:var(--primary-soft)}

/* ===== 表单 ===== */
.form-card{max-width:760px;margin:0 auto;padding:30px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--text)}
.field label .req{color:var(--danger)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#fff;font-family:inherit;font-size:14.5px;color:var(--text);transition:.2s
}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.field-checks{display:flex;flex-wrap:wrap;gap:8px}
.field-check{padding:6px 12px;border:1px solid var(--line);border-radius:999px;font-size:13px;cursor:pointer;user-select:none;transition:.15s}
.field-check.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.upload-zone{border:2px dashed var(--line);border-radius:var(--radius-sm);padding:22px;text-align:center;color:var(--muted);cursor:pointer;transition:.2s;background:#fff}
.upload-zone:hover{border-color:var(--primary);color:var(--primary-d)}
.work-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:12px}
.work-item{position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;background:var(--bg2)}
.work-item img{width:100%;height:100%;object-fit:cover}
.work-item .rm{position:absolute;top:4px;right:4px;background:rgba(0,0,0,.6);color:#fff;border:0;border-radius:50%;width:22px;height:22px;cursor:pointer;font-size:13px;line-height:1}

/* ===== 后台 ===== */
.admin-shell{display:grid;grid-template-columns:230px 1fr;gap:22px;min-height:60vh}
@media(max-width:880px){.admin-shell{grid-template-columns:1fr}}
.admin-side{padding:20px;position:sticky;top:calc(var(--nav-h)+16px);align-self:start}
.admin-side h3{font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}
.admin-side a{display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);margin-bottom:4px;cursor:pointer;transition:.15s}
.admin-side a:hover{background:var(--primary-soft);color:var(--primary-d)}
.admin-side a.active{background:var(--primary);color:#fff}
.admin-main{padding:20px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:22px}
.stat-card{padding:18px;border-radius:var(--radius)}
.stat-card .n{font-size:28px;font-weight:800}
.stat-card .l{color:var(--muted);font-size:13px;margin-top:2px}
.admin-table{width:100%;border-collapse:collapse;font-size:13.5px}
.admin-table th,.admin-table td{padding:11px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.admin-table th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.status-badge{font-size:12px;padding:3px 9px;border-radius:999px;font-weight:600}
.status-pending{background:#fef3c7;color:#b45309}
.status-approved{background:#dcfce7;color:#15803d}
.status-rejected{background:#fee2e2;color:#b91c1c}
.mini-actions{display:flex;gap:6px;flex-wrap:wrap}
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty .big{font-size:42px;margin-bottom:8px}

/* ===== 关于/步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.steps{grid-template-columns:1fr}}
.step{padding:22px;border-radius:var(--radius)}
.step .no{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:10px}
.feature-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:880px){.feature-list{grid-template-columns:1fr}}
.feature{padding:20px;border-radius:var(--radius)}
.feature .ico{font-size:24px;margin-bottom:8px}
.disclaimer{padding:22px;border-radius:var(--radius);border-left:4px solid var(--warn);background:#fffbeb}

/* ===== Toast ===== */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:var(--text);color:#fff;padding:12px 20px;border-radius:999px;font-size:14px;
  opacity:0;pointer-events:none;transition:.3s;z-index:300;box-shadow:0 10px 30px rgba(0,0,0,.25)
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{background:var(--danger)}
.toast.success{background:var(--accent)}

/* ===== 模态 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(20,23,40,.45);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.modal-mask.show{display:flex;animation:fade .2s}
.modal{background:#fff;border-radius:var(--radius);max-width:560px;width:100%;padding:26px;box-shadow:var(--shadow-lg);max-height:88vh;overflow:auto}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.modal-head h3{margin:0}
.modal .x{background:none;border:0;font-size:22px;cursor:pointer;color:var(--muted);line-height:1}

/* ===== 分页 ===== */
.pager{display:flex;gap:6px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.pager button{min-width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:14px}
.pager button.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager button[disabled]{opacity:.5;cursor:not-allowed}

/* ===== 动画 ===== */
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.rise{animation:rise .5s ease both}
.fade-in{animation:fade .4s ease both}
.stagger > *{animation:rise .5s ease both}
.stagger > *:nth-child(1){animation-delay:.04s}
.stagger > *:nth-child(2){animation-delay:.10s}
.stagger > *:nth-child(3){animation-delay:.16s}
.stagger > *:nth-child(4){animation-delay:.22s}
.stagger > *:nth-child(5){animation-delay:.28s}
.stagger > *:nth-child(6){animation-delay:.34s}

/* ===== 响应式 ===== */
@media(max-width:860px){
  .nav-links{position:fixed;top:var(--nav-h);left:0;right:0;background:var(--glass-strong);flex-direction:column;padding:12px 16px;gap:4px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.3s;box-shadow:var(--shadow)}
  .nav-links.open{transform:none}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .hero-stats{gap:24px}
}