:root {
  --bg: #0c1117;
  --bg-soft: #131a23;
  --card: #18202c;
  --border: #25303f;
  --text: #e7edf5;
  --text-dim: #95a3b5;
  --text-mute: #5e6b7d;
  --accent: #c8a45c;
  --accent-soft: #2a2418;
  --green: #4cb782;
  --red: #d96a6a;
  --blue: #5b9bf0;
  --radius: 14px;
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12,17,23,0.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: 0.5px; }
.brand .mark { width: 30px; height: 30px; border-radius: 7px; background: linear-gradient(135deg, var(--accent), #8a6b32); display: grid; place-items: center; color: #0c1117; font-weight: 800; font-size: 15px; }
.brand .sub { color: var(--text-dim); font-weight: 400; font-size: 13px; letter-spacing: 0; }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { color: var(--text-dim); font-size: 14px; }
.nav a:hover { color: var(--text); text-decoration: none; }
.btn {
  display: inline-block; padding: 11px 22px; border-radius: 999px;
  background: var(--accent); color: #0c1117; font-weight: 600; font-size: 14px;
  border: none; cursor: pointer; transition: filter 0.15s, transform 0.05s;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.sm { padding: 7px 14px; font-size: 13px; }

/* hero */
.hero { padding: 90px 0 70px; border-bottom: 1px solid var(--border);
  background: radial-gradient(1200px 400px at 70% -10%, rgba(200,164,92,0.10), transparent 70%); }
.hero h1 { font-size: 46px; line-height: 1.18; margin: 0 0 20px; font-weight: 700; letter-spacing: -0.5px; }
.hero h1 .gold { color: var(--accent); }
.hero p.lead { font-size: 18px; color: var(--text-dim); max-width: 640px; margin: 0 0 32px; }
.hero .ctas { display: flex; gap: 14px; flex-wrap: wrap; }

/* sections */
.section { padding: 64px 0; border-bottom: 1px solid var(--border); }
.section h2 { font-size: 30px; margin: 0 0 14px; font-weight: 700; }
.section .kicker { color: var(--accent); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; }
.section p.muted { color: var(--text-dim); max-width: 720px; }
.grid { display: grid; gap: 20px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 820px) { .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; } .hero h1 { font-size: 34px; } }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--text-dim); font-size: 14px; }
.card .num { font-size: 30px; color: var(--accent); font-weight: 700; margin-bottom: 8px; }

ul.bullets { margin: 0; padding: 0; list-style: none; }
ul.bullets li { padding: 12px 0; border-bottom: 1px solid var(--border); display: flex; gap: 12px; align-items: flex-start; }
ul.bullets li:last-child { border-bottom: none; }
ul.bullets li .ico { color: var(--accent); flex: 0 0 auto; }

/* footer */
.site-footer { padding: 40px 0; color: var(--text-mute); font-size: 13px; border-top: 1px solid var(--border); }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }

/* form */
.form-wrap { max-width: 720px; margin: 40px auto; }
.form-wrap h1 { font-size: 32px; margin: 0 0 8px; }
.form-wrap p.sub { color: var(--text-dim); margin: 0 0 28px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; margin-bottom: 7px; font-weight: 500; }
.field label .req { color: var(--red); }
.field label .opt { color: var(--text-mute); font-weight: 400; font-size: 12px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: 10px; color: var(--text);
  font-size: 15px; font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
}
.field textarea { resize: vertical; min-height: 110px; }
.field .hint { color: var(--text-mute); font-size: 12px; margin-top: 6px; }
.field .err { color: var(--red); font-size: 12px; margin-top: 6px; display: none; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--red); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 640px) { .row { grid-template-columns: 1fr; } }
.file-drop {
  border: 1.5px dashed var(--border); border-radius: 12px; padding: 28px;
  text-align: center; color: var(--text-dim); cursor: pointer; transition: 0.15s;
}
.file-drop:hover { border-color: var(--accent); color: var(--text); }
.file-drop input { display: none; }
.file-drop.has-file { border-color: var(--green); color: var(--text); }
.form-actions { display: flex; gap: 12px; align-items: center; margin-top: 8px; }
.form-msg { font-size: 14px; color: var(--text-dim); }
.form-msg.err { color: var(--red); }
.form-msg.ok { color: var(--green); }

/* thanks */
.thanks { text-align: center; padding: 100px 0; }
.thanks .check { width: 72px; height: 72px; border-radius: 50%; background: var(--green); display: grid; place-items: center; margin: 0 auto 24px; color: #0c1117; font-size: 36px; }

/* admin */
.admin-bar { background: var(--bg-soft); border-bottom: 1px solid var(--border); padding: 12px 0; }
.admin-bar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.admin-bar .stats { color: var(--text-dim); font-size: 14px; }
.admin-bar .stats b { color: var(--text); }
.admin-filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 20px 0; }
.admin-filters select, .admin-filters input {
  padding: 8px 12px; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px; font-family: inherit;
}
.admin-filters input.search { min-width: 220px; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th { text-align: left; color: var(--text-dim); font-weight: 500; padding: 12px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.tbl td { padding: 14px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.tbl tr:hover td { background: var(--bg-soft); }
table.tbl .name { font-weight: 600; }
table.tbl .muted { color: var(--text-dim); }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 500; white-space: nowrap; }
.pill.pending { background: #2a2a2a; color: var(--text-dim); }
.pill.interested { background: rgba(76,183,130,0.15); color: var(--green); }
.pill.not_interested { background: rgba(217,106,106,0.15); color: var(--red); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 6px; background: var(--bg-soft); border: 1px solid var(--border); font-size: 12px; color: var(--text-dim); margin-right: 4px; }
.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; font-size: 13px; }
.link-btn:hover { text-decoration: underline; }

/* modal detail */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 100; display: none; place-items: center; padding: 24px; }
.modal-bg.open { display: grid; }
.modal { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); max-width: 640px; width: 100%; max-height: 88vh; overflow: auto; padding: 28px; }
.modal h2 { margin: 0 0 6px; }
.modal .meta { color: var(--text-dim); font-size: 13px; margin-bottom: 18px; }
.modal .kv { display: grid; grid-template-columns: 110px 1fr; gap: 10px 14px; margin: 14px 0; font-size: 14px; }
.modal .kv .k { color: var(--text-mute); }
.modal .kv .v { color: var(--text); }
.modal .section-label { margin: 22px 0 8px; color: var(--text-dim); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; }
.modal textarea.notes { width: 100%; min-height: 80px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px; color: var(--text); padding: 10px; font-family: inherit; font-size: 14px; resize: vertical; }
.modal .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.modal .close { position: absolute; }

/* login */
.login-card { max-width: 380px; margin: 80px auto; }
.empty { text-align: center; padding: 80px 0; color: var(--text-mute); }

/* stats band */
.stats-band { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 36px; }
.stats-band .stat { text-align: center; padding: 18px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); }
.stats-band .stat .n { font-size: 30px; color: var(--accent); font-weight: 700; }
.stats-band .stat .l { color: var(--text-dim); font-size: 13px; margin-top: 4px; }
@media (max-width: 640px) { .stats-band { grid-template-columns: 1fr; } }

/* investment cases */
.cases { display: grid; gap: 20px; margin-top: 28px; }
.case {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; transition: border-color 0.15s;
}
.case:hover { border-color: var(--accent); }
.case-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.case-head .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.case-stage { color: var(--text-mute); font-size: 13px; }
.case h3 { margin: 0 0 6px; font-size: 19px; }
.case .scene { color: var(--text-dim); font-size: 14px; margin: 0 0 18px; }
.case-body { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 640px) { .case-body { grid-template-columns: 1fr; gap: 14px; } }
.case-label { color: var(--accent); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 10px; }
.case-body ul { margin: 0; padding: 0; list-style: none; }
.case-body ul li { padding: 6px 0; color: var(--text); font-size: 14px; display: flex; gap: 8px; }
.case-body ul li::before { content: '›'; color: var(--accent); flex: 0 0 auto; }
.case-result { background: var(--accent-soft); border: 1px solid rgba(200,164,92,0.3); border-radius: 10px; padding: 14px; color: var(--text); font-size: 14px; line-height: 1.6; }
.case-result b { color: var(--accent); }
.case-note { margin-top: 24px; color: var(--text-mute); font-size: 12px; text-align: center; }