:root {
    --bg: #070b12;
    --panel: rgba(10, 18, 32, .82);
    --line: rgba(94, 214, 255, .16);
    --cyan: #3ee8d4;
    --blue: #6b93ff;
    --text: #e8f2ff;
    --muted: #8aa0b8;
    --danger: #ff6b7a;
    --ok: #3ee8a0;
    --warn: #f5c16c;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
    color: var(--text);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
}
a { color: var(--cyan); text-decoration: none; }
a:hover { color: #9ff7ec; }
.bg-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(900px 420px at 12% -10%, rgba(62, 232, 212, .12), transparent 55%),
        radial-gradient(800px 380px at 90% 0%, rgba(107, 147, 255, .16), transparent 50%),
        linear-gradient(rgba(94, 214, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(94, 214, 255, .05) 1px, transparent 1px);
    background-size: auto, auto, 36px 36px, 36px 36px;
    z-index: 0;
}
.app { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(7, 11, 18, .78);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand b { display: block; letter-spacing: 2px; }
.brand small { display: block; color: var(--muted); font-size: 10px; letter-spacing: 2px; }
.mark {
    width: 36px;
    height: 36px;
    border: 1px solid var(--cyan);
    color: var(--cyan);
    display: grid;
    place-items: center;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 0 16px rgba(62, 232, 212, .25);
}
.nav { display: flex; gap: 18px; flex: 1; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a.on, .nav a:hover { color: var(--text); }
.who { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.ghost-link { color: var(--muted); }
.chip {
    border: 1px solid var(--line);
    color: var(--cyan);
    padding: 2px 8px;
    font-size: 12px;
    letter-spacing: 1px;
}
.debt-bar {
    background: rgba(245, 193, 108, .12);
    border-bottom: 1px solid rgba(245, 193, 108, .28);
    color: var(--warn);
    padding: 10px 28px;
    font-size: 13px;
}
.debt-bar a { color: var(--warn); text-decoration: underline; }
.main { width: min(1120px, calc(100% - 40px)); margin: 24px auto 40px; flex: 1; }
.foot {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    padding: 16px 28px 24px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: 0 0 0 1px rgba(255,255,255,.02) inset;
    padding: 22px;
    margin-bottom: 18px;
}
h1, h2, h3 { margin: 0 0 12px; font-weight: 600; }
h1 { font-size: 28px; letter-spacing: 1px; }
.muted { color: var(--muted); font-size: 13px; line-height: 1.7; }
.err, .ok {
    padding: 10px 12px;
    margin-bottom: 14px;
    font-size: 14px;
    border: 1px solid;
}
.err { color: var(--danger); border-color: rgba(255,107,122,.4); background: rgba(255,107,122,.08); }
.ok { color: var(--ok); border-color: rgba(62,232,160,.35); background: rgba(62,232,160,.08); }
label.f { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 13px; }
input[type="text"], input[type="password"], input[type="tel"], input[type="number"], input[type="email"], textarea, select {
    width: 100%;
    background: rgba(4, 8, 16, .72);
    border: 1px solid var(--line);
    color: var(--text);
    padding: 11px 12px;
    font: inherit;
    outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(62, 232, 212, .12); }
textarea { min-height: 120px; resize: vertical; }
.sms-row { display: flex; gap: 8px; }
.sms-row input { flex: 1; }
button, .btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--cyan), var(--blue));
    color: #061018;
    border: none;
    padding: 11px 18px;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    font-family: inherit;
}
button.ghost, .btn.ghost {
    background: transparent;
    color: var(--cyan);
    border: 1px solid var(--cyan);
}
button.danger { background: #8d3b32; color: #fff; }
.btn.mini { padding: 7px 12px; font-size: 13px; }
.links { display: flex; gap: 16px; margin-top: 16px; }
.login-tabs { display: flex; gap: 8px; margin: 8px 0 16px; }
.login-tabs a {
    padding: 8px 14px;
    border: 1px solid var(--line);
    color: var(--muted);
}
.login-tabs a.on { color: var(--cyan); border-color: var(--cyan); }
.hero {
    padding: 48px 0 20px;
}
.hero .kicker { color: var(--cyan); letter-spacing: 4px; font-size: 12px; }
.hero h1 { font-size: 42px; line-height: 1.2; }
.hero p { max-width: 640px; color: #b9c7da; font-size: 16px; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 22px; }
.grid-3, .grid-2 { display: grid; gap: 14px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
    background: linear-gradient(180deg, rgba(18, 32, 54, .92), rgba(10, 18, 32, .9));
    border: 1px solid rgba(94, 214, 255, .28);
    padding: 18px;
}
.card b { display: block; margin-bottom: 8px; color: var(--cyan); }
.scene-list { display: flex; flex-wrap: wrap; gap: 8px; }
.scene-list a, .scene-list button, .scene-list label {
    border: 1px solid var(--line);
    color: var(--text);
    padding: 8px 12px;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
}
.scene-list input { display: none; }
.scene-list label:has(input:checked), .scene-list .on, .scene-list input:checked + span { border-color: var(--cyan); color: var(--cyan); }
.chat-layout { display: grid; grid-template-columns: 240px 1fr; gap: 16px; }
.side-list a {
    display: block;
    padding: 10px 12px;
    border: 1px solid transparent;
    color: var(--muted);
    margin-bottom: 6px;
}
.side-list a.on, .side-list a:hover { border-color: var(--line); color: var(--text); background: rgba(255,255,255,.03); }
.msgs { display: flex; flex-direction: column; align-items: stretch; gap: 12px; }
.msg { padding: 14px 16px; border: 1px solid var(--line); background: rgba(255,255,255,.02); line-height: 1.75; flex: 0 0 auto; }
.msg.user {
    align-self: flex-start;
    width: fit-content;
    max-width: min(720px, 100%);
    border-color: rgba(107, 147, 255, .35);
    background: rgba(107, 147, 255, .08);
}
.msg.user .q-body { white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; }
.msg.assistant { border-color: rgba(62, 232, 212, .28); width: 100%; }
.msg .role { color: var(--muted); font-size: 12px; letter-spacing: 1px; margin-bottom: 8px; }
.msg.assistant h1, .msg.assistant h2, .msg.assistant h3, .msg.assistant h4 { margin: 16px 0 8px; color: var(--cyan); font-weight: 600; line-height: 1.4; }
.msg.assistant h1 { font-size: 22px; }
.msg.assistant h2 { font-size: 18px; }
.msg.assistant h3, .msg.assistant h4 { font-size: 16px; }
.msg.assistant p { margin: 0 0 10px; }
.msg.assistant ul, .msg.assistant ol { margin: 0 0 12px; padding-left: 1.4em; }
.msg.assistant li { margin: 4px 0; }
.msg.assistant hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }
.msg.assistant strong { color: #fff; }
.msg.assistant code { background: rgba(62, 232, 212, .08); padding: 1px 6px; font-size: 13px; }
.msg.assistant pre { background: rgba(4, 8, 16, .72); border: 1px solid var(--line); padding: 12px; overflow: auto; margin: 0 0 12px; }
.msg.assistant pre code { background: none; padding: 0; }
.side-item { display: flex; align-items: flex-start; gap: 6px; margin-bottom: 6px; }
.side-item a.t { flex: 1; }
.side-item button { padding: 4px 8px; font-size: 12px; letter-spacing: 0; }
.chat-form textarea { min-height: 90px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat { background: var(--panel); border: 1px solid var(--line); padding: 16px; }
.stat span { color: var(--muted); font-size: 12px; letter-spacing: 1px; }
.stat b { display: block; margin-top: 8px; font-size: 24px; color: var(--cyan); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
.pager { display: flex; gap: 6px; margin-top: 14px; }
.pager a, .pager span { min-width: 32px; text-align: center; padding: 6px 8px; border: 1px solid var(--line); }
.pager span { color: #061018; background: var(--cyan); border-color: var(--cyan); }
.auth-body { min-height: 100vh; display: grid; place-items: center; }
.auth-wrap { width: min(460px, calc(100% - 32px)); position: relative; z-index: 1; }
.auth-card { margin-top: 18px; }
.auth-card button[type="submit"] { width: 100%; margin-top: 16px; }
.row-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.ops { display: flex; align-items: center; gap: 20px; white-space: nowrap; }
.ops form { margin: 0; }
.ops button { padding: 6px 14px; }
@media (max-width: 860px) {
    .topbar { flex-wrap: wrap; }
    .nav { order: 3; width: 100%; overflow: auto; }
    .main { width: calc(100% - 24px); }
    .grid-3, .grid-2, .stats, .chat-layout { grid-template-columns: 1fr; }
    .hero h1 { font-size: 30px; }
    .foot { flex-direction: column; }
}