:root {
  --bg: #0f1216;
  --bg-soft: #161b22;
  --panel: #1b2129;
  --panel-2: #212934;
  --line: #2c3542;
  --ink: #e8edf3;
  --ink-soft: #a9b4c2;
  --ink-dim: #7b8794;
  --accent: #ffb020;
  --accent-2: #4aa8ff;
  --green: #37c98a;
  --red: #ff6b6b;
  --content: #4aa8ff;
  --consulting: #b98bff;
  --product: #37c98a;
  --investment: #ffb020;
  --other: #7b8794;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1c2530 0%, var(--bg) 55%);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* Topbar */
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(15, 18, 22, 0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 26px; filter: drop-shadow(0 0 10px rgba(255, 176, 32, 0.5)); }
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: 0.2px; }
.brand-sub { font-size: 12px; color: var(--ink-dim); }
.ghost-link { color: var(--ink-soft); text-decoration: none; font-size: 13px; border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; transition: 0.2s; }
.ghost-link:hover { color: var(--ink); border-color: var(--accent); }

/* Intro */
.intro { padding: 34px 0 10px; }
.intro h1 { font-size: clamp(22px, 3.4vw, 32px); line-height: 1.3; margin: 0 0 12px; letter-spacing: -0.3px; }
.intro h1 strong { color: var(--accent); font-weight: 700; }
.lead { color: var(--ink-soft); max-width: 780px; margin: 0; font-size: 15px; }
.lead strong { color: var(--ink); font-weight: 600; }

/* Grid */
.grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 20px; margin: 22px 0 8px; align-items: start; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.output-panel { position: sticky; top: 78px; }
@media (max-width: 900px) { .output-panel { position: static; } }

.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.panel-head.sub { margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--line); }
.panel-head h2 { font-size: 15px; margin: 0; color: var(--ink); }
.preset-actions { display: flex; gap: 8px; }

.chip { cursor: pointer; background: var(--panel-2); color: var(--ink-soft); border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; font-size: 12.5px; transition: 0.15s; }
.chip:hover { color: var(--ink); border-color: var(--accent); }
.chip.primary { background: linear-gradient(180deg, #ffbe3d, #ff9e0a); color: #201400; border-color: transparent; font-weight: 600; }
.chip.primary:hover { filter: brightness(1.05); }

/* Capacity */
.capacity-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .capacity-row { grid-template-columns: 1fr; } }
.cap-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ink-soft); }
.cap-field input { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; color: var(--ink); padding: 10px 12px; font-size: 15px; font-weight: 600; }
.cap-field input:focus { outline: none; border-color: var(--accent); }
.cap-field small { color: var(--ink-dim); font-size: 11.5px; font-weight: 400; }

/* Task cards */
.tasks { display: flex; flex-direction: column; gap: 10px; }
.task-card { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.task-card.invalid { border-color: var(--red); }
.task-top { display: flex; gap: 8px; margin-bottom: 10px; }
.t-name { flex: 1; background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; color: var(--ink); padding: 9px 11px; font-size: 14px; }
.t-name:focus { outline: none; border-color: var(--accent); }
.t-del { background: transparent; border: 1px solid var(--line); color: var(--ink-dim); border-radius: 8px; width: 34px; cursor: pointer; font-size: 13px; }
.t-del:hover { color: var(--red); border-color: var(--red); }

.task-fields { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
@media (max-width: 560px) { .task-fields { grid-template-columns: repeat(3, 1fr); } }
.task-fields label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--ink-dim); }
.task-fields select, .task-fields input[type="number"] { background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; color: var(--ink); padding: 7px 6px; font-size: 12.5px; }
.task-fields select:focus, .task-fields input:focus { outline: none; border-color: var(--accent); }
.reuse-field { align-items: center; }
.reuse-field input[type="checkbox"] { width: 20px; height: 20px; accent-color: var(--accent); margin-top: 3px; }

/* Output */
.out-empty { color: var(--ink-dim); text-align: center; padding: 40px 10px; font-size: 14px; }
.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 8px; }
@media (max-width: 480px) { .summary { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.stat .n { font-size: 20px; font-weight: 700; }
.stat .l { font-size: 11px; color: var(--ink-dim); }
.stat.util .n { color: var(--accent); }
.stat.defer .n { color: var(--red); }

.gauge { height: 8px; border-radius: 999px; background: var(--panel-2); overflow: hidden; margin: 12px 0 4px; display: flex; }
.gauge > i { display: block; height: 100%; }
.gauge-label { font-size: 11.5px; color: var(--ink-dim); margin-bottom: 14px; }

.warn { background: rgba(255, 107, 107, 0.08); border: 1px solid rgba(255, 107, 107, 0.35); border-radius: 10px; padding: 10px 12px; font-size: 12.5px; color: #ffd0d0; margin-bottom: 8px; }
.warn b { color: var(--red); }

.block-title { font-size: 12px; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.6px; margin: 18px 0 8px; }

.plan-item { display: flex; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.plan-item:last-child { border-bottom: none; }
.rank { font-size: 12px; color: var(--ink-dim); width: 20px; flex: none; padding-top: 2px; }
.pi-body { flex: 1; min-width: 0; }
.pi-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pi-name { font-weight: 600; font-size: 14px; }
.tag { font-size: 10.5px; padding: 2px 7px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); white-space: nowrap; }
.tag.line { color: #08121c; font-weight: 600; }
.tag.line.content { background: var(--content); }
.tag.line.consulting { background: var(--consulting); }
.tag.line.product { background: var(--product); }
.tag.line.investment { background: var(--investment); }
.tag.line.other { background: var(--other); }
.tag.reduced { color: var(--accent); border-color: var(--accent); }
.tag.deep { color: var(--accent-2); border-color: var(--accent-2); }
.pi-meta { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
.pi-mvp { font-size: 12px; color: var(--ink-dim); margin-top: 4px; padding-left: 10px; border-left: 2px solid var(--line); }
.pi-mvp b { color: var(--ink-soft); font-weight: 600; }
.score-pill { flex: none; font-size: 13px; font-weight: 700; color: var(--accent); width: 34px; text-align: right; }

.defer-item { padding: 10px 0; border-bottom: 1px dashed var(--line); }
.defer-item:last-child { border-bottom: none; }
.defer-name { font-size: 13.5px; font-weight: 600; }
.defer-reason { font-size: 12px; color: var(--red); margin-top: 2px; }
.defer-sug { font-size: 12px; color: var(--ink-dim); margin-top: 2px; }

.lines { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.line-row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; }
.line-row .ln { width: 46px; flex: none; color: var(--ink-soft); }
.line-bar { flex: 1; height: 10px; border-radius: 999px; background: var(--panel-2); overflow: hidden; }
.line-bar > i { display: block; height: 100%; }
.line-row .lv { width: 78px; flex: none; text-align: right; color: var(--ink-dim); }

.export-row { margin-top: 16px; display: flex; gap: 8px; }
.btn { cursor: pointer; border-radius: 10px; padding: 10px 14px; font-size: 13px; border: 1px solid var(--line); background: var(--panel-2); color: var(--ink); transition: 0.15s; }
.btn:hover { border-color: var(--accent); }
.btn.copied { border-color: var(--green); color: var(--green); }

/* How */
.how { margin: 30px 0 10px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.how h2 { font-size: 16px; margin: 0 0 12px; }
.how-list { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 13.5px; }
.how-list li { margin-bottom: 8px; }
.how-list em { color: var(--accent); font-style: normal; }
.fineprint { color: var(--ink-dim); font-size: 12px; margin: 14px 0 0; }

.foot { border-top: 1px solid var(--line); margin-top: 28px; padding: 18px 0; color: var(--ink-dim); font-size: 12.5px; text-align: center; }