/* DEAIGC 门户站共享样式（暗色） */
:root{
  --bg:#0b0d12; --card:#161a23; --card2:#1c2130; --line:#262c3a;
  --txt:#e9edf5; --muted:#8892a6; --accent:#5b8cff; --accent2:#25d3a4; --warn:#ffb020;
  --pink:#ff5b8c; --hdrH:96px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(900px 480px at 15% -8%, rgba(91,140,255,.16), transparent 62%), var(--bg);
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}

/* ---------- 头部（消息通知完全置顶 + 顶栏，整体吸顶） ---------- */
.hdr{position:sticky;top:0;z-index:60}
.topbar{
  display:flex;align-items:center;gap:14px;
  padding:12px 20px;background:rgba(11,13,18,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:-.01em}
.brand .logo{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:15px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--accent),#8b5cf6);
}
.brand small{color:var(--muted);font-weight:600;font-size:11px;letter-spacing:.08em}
.topbar .sp{flex:1}
.top-actions{display:flex;align-items:center;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border:1px solid var(--line);background:var(--card2);color:var(--txt);
  border-radius:10px;padding:9px 15px;font-size:14px;font-weight:600;cursor:pointer;
  transition:.15s;white-space:nowrap;
}
.btn:hover{border-color:#3a4356;background:#232a3b}
.btn.primary{background:linear-gradient(135deg,var(--accent),#7b6cff);border-color:transparent;color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}
.btn.sm{padding:6px 11px;font-size:13px;border-radius:8px}
.btn.block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed}

/* 会员入口 */
.member-entry{display:flex;align-items:center;gap:9px;cursor:pointer;padding:5px 11px 5px 5px;border-radius:999px;border:1px solid var(--line);background:var(--card);transition:.15s}
.member-entry:hover{border-color:var(--accent)}
.member-entry .avatar{width:30px;height:30px;border-radius:50%;object-fit:cover;background:linear-gradient(135deg,var(--accent),#8b5cf6);display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;flex:none}
.member-entry .meta{line-height:1.25;text-align:left}
.member-entry .meta b{font-size:13px;display:block;max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.member-entry .meta span{font-size:11px;color:var(--muted)}
.lv-chip{display:inline-block;padding:1px 7px;border-radius:6px;font-size:11px;font-weight:700;color:#fff}

/* ---------- 通知 ---------- */
.notice{
  display:flex;align-items:center;gap:10px;padding:10px 20px;font-size:13.5px;
  background:linear-gradient(90deg,rgba(91,140,255,.20),rgba(37,211,164,.13)),#0d1017;
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.notice .n-ico{flex:none;color:#fff;display:grid;place-items:center}
.notice .n-txt{flex:1;min-width:0}
.notice a{font-weight:700}
.notice .n-close{
  flex:none;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);background:var(--card2);
  color:var(--muted);cursor:pointer;font-size:15px;line-height:1;display:grid;place-items:center;
}
.notice .n-close:hover{color:var(--txt);border-color:#3a4356}

/* ---------- 布局（左侧栏贴左边缘，通到底） ---------- */
.layout{display:flex;align-items:flex-start;gap:20px;margin-left:224px;padding:20px 24px 48px;max-width:none}
.sidenav{
  position:fixed;left:0;top:var(--hdrH,96px);bottom:0;width:224px;z-index:50;
  background:rgba(11,13,18,.92);backdrop-filter:blur(12px);
  border-right:1px solid var(--line);border-radius:0;
  padding:14px 10px;overflow-y:auto;
}
.sidenav .sn-t{font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:700;padding:8px 10px 6px}
.sn-item{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;cursor:pointer;
  border:1px solid transparent;background:transparent;color:var(--txt);
  border-radius:10px;padding:10px 11px;font-size:14px;font-weight:600;transition:.14s;
}
.sn-item:hover{background:var(--card2)}
.sn-item.on{background:linear-gradient(135deg,rgba(91,140,255,.22),rgba(139,92,246,.14));border-color:rgba(91,140,255,.45);color:#fff}
.sn-item .ico{width:22px;flex:none;display:grid;place-items:center;color:#fff}
.sn-item .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 简化白色线条图标 */
.svgi{width:18px;height:18px;display:block;flex:none}

.content{flex:1;min-width:0;max-width:1180px}
.sec{display:none;animation:fade .25s ease}
.sec.on{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.sec-head{margin:2px 0 16px}
.sec-head h2{font-size:22px;font-weight:800;letter-spacing:-.02em;margin:0 0 6px;display:flex;align-items:center;gap:9px}
.sec-head h2 .ico{color:#fff;display:inline-grid;place-items:center}
.sec-head h2 .ico .svgi{width:20px;height:20px}
.sec-head p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.7}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:16px}
.card.tint{background:linear-gradient(135deg,rgba(91,140,255,.12),rgba(139,92,246,.08));border-color:rgba(91,140,255,.32)}
.card h3{font-size:15px;margin:0 0 10px;font-weight:700;display:flex;align-items:center;gap:8px}
.card h3 .tag{font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.06em}

.grid{display:grid;gap:12px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* 案例展示：16:9 大图网格 */
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:14px}
.case{background:var(--card2);border:1px solid var(--line);border-radius:12px;overflow:hidden;cursor:pointer;transition:.16s;display:block}
.case:hover{transform:translateY(-3px);border-color:var(--accent)}
.case .thumb{position:relative;aspect-ratio:16/9;background:#0e1118 center/cover no-repeat}
.case .thumb .play{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.62);border-radius:7px;padding:3px 8px;font-size:11px;color:#fff;opacity:0;transition:.16s;backdrop-filter:blur(2px)}
.case:hover .thumb .play{opacity:1}
.case .b{padding:10px 12px}
.case .b b{font-size:14px;display:block;margin-bottom:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.case .b span{font-size:12.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}

.cat-row{margin-bottom:14px}
.cat-row .ct{display:flex;align-items:baseline;gap:10px;margin-bottom:9px}
.cat-row .ct b{font-size:15.5px}
.cat-row .ct span{font-size:12.5px;color:var(--muted)}

table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
table.tbl th,table.tbl td{padding:10px 11px;border-bottom:1px solid rgba(255,255,255,.06);text-align:left;vertical-align:top}
table.tbl th{color:var(--muted);font-weight:600;font-size:12.5px;white-space:nowrap}
table.tbl tr:last-child td{border-bottom:none}
table.tbl td b{color:#fff}

.chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;background:var(--card2);border:1px solid var(--line);color:var(--muted)}
.chip.a{background:rgba(91,140,255,.16);border-color:rgba(91,140,255,.4);color:#a9c2ff}
.chip.g{background:rgba(37,211,164,.14);border-color:rgba(37,211,164,.4);color:#7fe3c8}
.chip.w{background:rgba(255,176,32,.14);border-color:rgba(255,176,32,.4);color:#ffd07a}

.feat{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:13px}
.feat .fi{font-size:19px;margin-bottom:6px}
.feat b{display:block;font-size:14px;margin-bottom:4px}
.feat p{margin:0;font-size:12.5px;color:var(--muted);line-height:1.6}

.steps{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px}
.step{flex:none;width:168px;background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:13px}
.step .n{width:24px;height:24px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#8b5cf6);display:grid;place-items:center;font-size:12px;font-weight:800;color:#fff;margin-bottom:8px}
.step b{display:block;font-size:13.5px;margin-bottom:3px}
.step p{margin:0;font-size:12px;color:var(--muted);line-height:1.55}

.faq details{background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:11px 13px;margin-bottom:9px}
.faq summary{cursor:pointer;font-weight:600;font-size:14px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:'＋';color:var(--accent);margin-right:8px;font-weight:800}
.faq details[open] summary::before{content:'－'}
.faq p{margin:9px 0 0;font-size:13.5px;color:var(--muted);line-height:1.7;padding-left:20px}

.tiers{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.tier{background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:15px;position:relative;display:flex;flex-direction:column}
.tier.rec{border-color:rgba(91,140,255,.55);background:linear-gradient(160deg,rgba(91,140,255,.14),var(--card2))}
.tier .rec-tag{position:absolute;top:-1px;right:12px;background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;font-size:10.5px;font-weight:800;padding:3px 9px;border-radius:0 0 8px 8px;letter-spacing:.06em}
.tier .tn{font-size:16px;font-weight:800;display:flex;align-items:center;gap:7px}
.tier .ten{font-size:10.5px;color:var(--muted);letter-spacing:.1em;font-weight:700}
.tier .tp{font-size:20px;font-weight:800;margin:8px 0 2px;color:#fff}
.tier .tper{font-size:12px;color:var(--muted);margin-bottom:10px}
.tier ul{margin:0;padding:0;list-style:none;flex:1}
.tier li{font-size:12.5px;color:var(--muted);line-height:1.6;padding:5px 0 5px 17px;position:relative;border-top:1px solid rgba(255,255,255,.05)}
.tier li:first-child{border-top:none}
.tier li::before{content:'✓';position:absolute;left:0;color:var(--accent2);font-weight:800;font-size:11px}

.hint{background:var(--card2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:11px 13px;font-size:13px;color:var(--muted);line-height:1.7}
.hint b{color:var(--txt)}
.hint.warn{border-left-color:var(--warn)}

.empty{padding:26px 16px;text-align:center;color:var(--muted);font-size:13.5px;background:var(--card2);border:1px dashed var(--line);border-radius:12px}

/* ---------- 弹层 ---------- */
.mask{position:fixed;inset:0;background:rgba(4,6,11,.72);backdrop-filter:blur(3px);z-index:100;display:none;align-items:center;justify-content:center;padding:18px}
.mask.on{display:flex}
.sheet{
  background:var(--card);border:1px solid var(--line);border-radius:16px;width:100%;max-width:460px;
  max-height:88vh;overflow:auto;padding:20px;animation:pop .2s ease;
}
.sheet.wide{max-width:820px}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(8px)}to{opacity:1;transform:none}}
.sheet h3{margin:0 0 4px;font-size:18px;font-weight:800}
.sheet .sub{margin:0 0 16px;color:var(--muted);font-size:13px}
.sheet .x{position:absolute}
.fld{margin-bottom:12px}
.fld label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px;font-weight:600}
.fld input,.fld textarea,.fld select{
  width:100%;background:#0e121a;border:1px solid var(--line);border-radius:10px;color:#fff;
  font-family:inherit;font-size:15px;padding:11px 12px;outline:none;transition:.15s;
}
.fld input:focus,.fld textarea:focus,.fld select:focus{border-color:var(--accent)}
.fld textarea{resize:vertical;min-height:74px;line-height:1.6}
.fld-row{display:flex;gap:11px}
.fld-row .fld{flex:1}
.form-msg{font-size:13px;margin:4px 0 10px;min-height:18px}
.form-msg.err{color:#ff7a90}
.form-msg.ok{color:var(--accent2)}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs button{
  border:none;background:transparent;color:var(--muted);font-size:14px;font-weight:600;
  padding:10px 13px;cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap;
}
.tabs button.on{color:#fff;border-bottom-color:var(--accent)}

.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:11px 18px;
  font-size:13.5px;z-index:200;opacity:0;transition:.25s;pointer-events:none;box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:rgba(37,211,164,.5)}
.toast.err{border-color:rgba(255,122,144,.5)}

@media (max-width:900px){
  .layout{flex-direction:column;margin-left:0;padding:14px;gap:14px}
  .content{max-width:none}
  .sidenav{position:static;width:100%;top:auto;bottom:auto;border-right:none;border-bottom:1px solid var(--line);display:flex;gap:6px;overflow-x:auto;padding:7px;background:var(--card);backdrop-filter:none}
  .sidenav .sn-t{display:none}
  .sn-item{flex:none;white-space:nowrap}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .topbar{padding:10px 14px}
  .brand small{display:none}
  .case-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
}
@media (max-width:560px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .fld-row{flex-direction:column;gap:0}
}