/* ============================================================
   卡密分发站 · 设计系统 v2（商用简约风）
   ============================================================ */
:root{
  --bg:#f6f8fb; --surface:#fff; --surface-2:#fbfcfe;
  --ink:#0f172a; --ink-2:#475569; --ink-3:#94a3b8;
  --line:#e6ebf2; --line-2:#eef2f7;
  --brand:#2563eb; --brand-2:#7c3aed; --brand-ink:#1d4ed8;
  --ok:#059669; --warn:#d97706; --err:#dc2626;
  --r-sm:10px; --r:14px; --r-lg:20px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04),0 1px 3px rgba(15,23,42,.06);
  --shadow:0 10px 30px -12px rgba(15,23,42,.18);
  --shadow-lg:0 24px 60px -24px rgba(15,23,42,.28);
  --max:1160px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(37,99,235,.16)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 18px}

/* ---------- 顶栏 ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 18px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16.5px;letter-spacing:-.02em}
.brand-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:0 6px 16px -6px rgba(37,99,235,.6)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{padding:8px 13px;border-radius:10px;color:var(--ink-2);font-size:14px;font-weight:500;transition:.16s}
.nav-links a:hover{background:#f1f5f9;color:var(--ink)}
.nav-links a.on{background:#eef4ff;color:var(--brand)}
.nav-links a.cta{background:var(--ink);color:#fff;margin-left:6px}
.nav-links a.cta:hover{background:#1e293b}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;cursor:pointer}
@media(max-width:820px){
  .nav-toggle{display:block}
  .nav-links{position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px;gap:2px;display:none;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(900px 360px at 12% -10%,rgba(37,99,235,.13),transparent 60%),
             radial-gradient(700px 320px at 92% 0%,rgba(124,58,237,.12),transparent 55%),
             linear-gradient(180deg,#fff, #f9fbff)}
.hero-inner{max-width:var(--max);margin:0 auto;padding:54px 18px 42px;display:grid;grid-template-columns:1.25fr .75fr;gap:34px;align-items:center}
@media(max-width:860px){.hero-inner{grid-template-columns:1fr;padding:36px 18px 28px;gap:22px}}
.hero h1{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.03em;margin-bottom:12px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:var(--ink-2);font-size:15.5px;max-width:52ch}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.hero-card{background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow);backdrop-filter:blur(8px)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;text-align:center}
.hero-stats b{display:block;font-size:22px;letter-spacing:-.02em}
.hero-stats span{font-size:12px;color:var(--ink-3)}
.hero-stats .cell{padding:10px 6px;border-radius:12px;background:var(--surface-2)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 18px;border-radius:12px;border:1px solid transparent;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:.16s;white-space:nowrap}
.btn:hover{background:var(--brand-ink);transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(37,99,235,.8)}
.btn:active{transform:none}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{background:#f8fafc;box-shadow:var(--shadow-sm)}
.btn.dark{background:var(--ink)} .btn.dark:hover{background:#1e293b}
.btn.block{width:100%;padding:13px}
.btn.sm{padding:7px 12px;font-size:12.5px;border-radius:9px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用块 ---------- */
.section{padding:34px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:16px}
.section-head h2{font-size:20px;letter-spacing:-.02em}
.section-head .more{font-size:13px;color:var(--brand);font-weight:600}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm)}
.notice{display:flex;align-items:center;gap:10px;background:linear-gradient(90deg,#fffbeb,#fff7ed);border:1px solid #fde68a;color:#92400e;border-radius:12px;padding:11px 14px;font-size:13.5px;overflow:hidden}
.notice span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 筛选 ---------- */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.chips{display:flex;gap:8px;overflow:auto;padding-bottom:2px;flex:1;min-width:0}
.chip{padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:13px;white-space:nowrap;transition:.15s}
.chip:hover{border-color:#c7d2fe;color:var(--brand)}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.search{position:relative;min-width:200px}
.search input{width:100%;padding:10px 13px 10px 36px;border:1px solid var(--line);border-radius:11px;background:#fff;font-size:14px;outline:none}
.search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.search .ic{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ink-3);font-size:14px}
.sortsel{padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:#fff;font-size:13.5px;color:var(--ink-2)}

/* ---------- 商品卡 ---------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(min-width:700px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1000px){.grid{grid-template-columns:repeat(4,1fr)}}
.pcard{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:transform .2s,box-shadow .2s,border-color .2s}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dbe4f0}
.pcard .cover{position:relative;aspect-ratio:16/10;background:#eef2f7;overflow:hidden}
.pcard .cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.pcard:hover .cover img{transform:scale(1.045)}
.pcard .badge{position:absolute;left:10px;top:10px;padding:3px 9px;border-radius:999px;background:rgba(15,23,42,.72);color:#fff;font-size:11.5px;backdrop-filter:blur(4px)}
.pcard .body{padding:13px 13px 14px;display:flex;flex-direction:column;gap:7px;flex:1}
.pcard h3{font-size:14.5px;font-weight:650;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.6em}
.pcard .sum{font-size:12.5px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.pcard .row{display:flex;align-items:center;justify-content:space-between;margin-top:2px}
.price{color:var(--err);font-weight:800;font-size:17px;letter-spacing:-.02em}
.price small{font-size:11.5px;font-weight:600}
.pcard .go{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#eef4ff;color:var(--brand);font-size:14px}

/* ---------- 详情 ---------- */
.detail{display:grid;grid-template-columns:1.55fr .85fr;gap:22px;align-items:start}
@media(max-width:900px){.detail{grid-template-columns:1fr}}
.gallery{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#eef2f7}
.gallery .main{aspect-ratio:16/9;background:#eef2f7}
.gallery .main img{width:100%;height:100%;object-fit:cover}
.gallery .thumbs{display:flex;gap:6px;padding:8px;background:#fff;overflow:auto}
.gallery .thumbs img{width:64px;height:48px;object-fit:cover;border-radius:7px;cursor:pointer;opacity:.7;border:1px solid transparent}
.gallery .thumbs img.on{opacity:1;border-color:var(--brand)}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow-sm)}
.buy{position:sticky;top:82px}
.buy .price{font-size:30px}
.buy .kv{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);padding:9px 0;border-bottom:1px dashed var(--line-2)}
.buy .kv:last-of-type{border-bottom:0}
.tabs2{display:flex;gap:6px;border-bottom:1px solid var(--line);margin:22px 0 16px}
.tabs2 button{border:0;background:none;padding:10px 14px;font-size:14px;color:var(--ink-2);cursor:pointer;border-bottom:2px solid transparent;font-weight:600}
.tabs2 button.on{color:var(--ink);border-bottom-color:var(--brand)}
.content{font-size:15px;line-height:1.9;color:#1f2937}
.content img{border-radius:12px;margin:10px 0}
.content h3,.content h4{margin:18px 0 8px}
.content ul,.content ol{padding-left:22px}

/* ---------- 动态 ---------- */
.feed{display:flex;gap:14px;padding:18px;border-bottom:1px solid var(--line-2)}
.feed:last-child{border-bottom:0}
.feed .ava{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-weight:700;flex:0 0 auto}
.feed .body{flex:1;min-width:0}
.feed h4{font-size:14.5px;margin-bottom:4px}
.feed .txt{font-size:14px;color:#334155;white-space:pre-wrap;line-height:1.8}
.feed .imgs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:10px;max-width:420px}
.feed .imgs img{aspect-ratio:1/1;object-fit:cover;border-radius:9px;cursor:pointer}
.feed .meta{font-size:12px;color:var(--ink-3);margin-top:8px}

/* ---------- 素材瀑布 ---------- */
.masonry{columns:2;column-gap:12px}
@media(min-width:760px){.masonry{columns:3}}
@media(min-width:1040px){.masonry{columns:4}}
.masonry .m-item{break-inside:avoid;margin-bottom:12px;border-radius:14px;overflow:hidden;background:#fff;border:1px solid var(--line);cursor:pointer;transition:.2s}
.masonry .m-item:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.masonry video{width:100%;display:block}

/* ---------- 表单 ---------- */
.auth{min-height:calc(100vh - 64px);display:grid;grid-template-columns:1.05fr .95fr}
@media(max-width:860px){.auth{grid-template-columns:1fr}.auth .side{display:none}}
.auth .side{background:linear-gradient(150deg,#0f172a,#1e293b 45%,#312e81);color:#fff;padding:56px 46px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.auth .side h2{font-size:26px;letter-spacing:-.02em}
.auth .side p{color:#cbd5e1;font-size:14.5px}
.auth .side ul{margin:10px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.auth .side li{font-size:13.5px;color:#e2e8f0;display:flex;gap:8px;align-items:center}
.auth .main{display:flex;align-items:center;justify-content:center;padding:40px 18px}
.auth .box{width:100%;max-width:400px}
.auth h1{font-size:22px;margin-bottom:6px}
.auth .sub{color:var(--ink-2);font-size:13.5px;margin-bottom:22px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:15px;background:#fff;outline:none;transition:.15s}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.captcha{display:flex;gap:8px}.captcha .input{flex:1}.captcha img{width:104px;height:46px;border-radius:12px;border:1px solid var(--line);cursor:pointer}
.hint{font-size:12.5px;color:var(--ink-3)}
.flash{padding:11px 14px;border-radius:12px;font-size:13.5px;margin:0 0 14px}
.flash.ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.flash.err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* ---------- 列表 ---------- */
.list{overflow:hidden}
.list .item{display:flex;gap:14px;padding:16px;border-bottom:1px solid var(--line-2);align-items:center}
.list .item:last-child{border-bottom:0}
.list .item img.thumb{width:92px;height:68px;object-fit:cover;border-radius:10px;background:#eef2f7;flex:0 0 auto}
.list .grow{flex:1;min-width:0}
.list .title{font-weight:650;font-size:14.5px}
.list .sub{font-size:12.5px;color:var(--ink-3);margin-top:2px}
.empty{text-align:center;padding:56px 16px;color:var(--ink-3)}
.empty .big{font-size:34px;display:block;margin-bottom:10px}

/* ---------- 弹窗 / 提示 ---------- */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;padding:18px;z-index:120}
.modal.on{display:flex}
.modal .box{background:#fff;border-radius:18px;max-width:440px;width:100%;padding:22px;box-shadow:var(--shadow-lg);animation:pop .18s ease}
@keyframes pop{from{transform:scale(.96);opacity:.6}to{transform:scale(1);opacity:1}}
.modal .box h3{font-size:17px;margin-bottom:10px}
.modal .val{font:14px/1.7 ui-monospace,Consolas,monospace;background:#f1f5f9;border-radius:10px;padding:12px;word-break:break-all;margin:12px 0}
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(16px);background:#0f172a;color:#fff;padding:11px 18px;border-radius:999px;
  font-size:13.5px;opacity:0;pointer-events:none;transition:.24s;z-index:200;box-shadow:var(--shadow-lg)}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 页脚 ---------- */
.foot{margin-top:44px;border-top:1px solid var(--line);background:#fff}
.foot-inner{max-width:var(--max);margin:0 auto;padding:34px 18px 26px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
@media(max-width:760px){.foot-inner{grid-template-columns:1fr;gap:18px}}
.foot h5{font-size:13px;color:var(--ink);margin-bottom:10px}
.foot a,.foot p{font-size:13px;color:var(--ink-3);line-height:2}
.foot .copy{border-top:1px solid var(--line-2);padding:14px 18px;text-align:center;font-size:12.5px;color:var(--ink-3)}
.backtop{position:fixed;right:18px;bottom:22px;width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;z-index:90}
.backtop.on{opacity:1;pointer-events:auto}

/* ---------- 骨架 ---------- */
.skel{background:linear-gradient(90deg,#eef2f7 25%,#f7fafc 37%,#eef2f7 63%);background-size:400% 100%;animation:sh 1.2s infinite}
@keyframes sh{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* 后台兼容别名 */
.tip{font-size:12.5px;color:var(--ink-3)}
.mt{margin-top:12px}
.mb{margin-bottom:12px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}