:root {
  --purple: #0c2340; --purple-mid: #163a5f; --purple-deep: #061525;
  --gold: #c9a84c; --gold-light: #e0c878; --gold-muted: #a8893a; --gold-soft: #f8f4e8;
  --navy: #0f0f18; --text: #1c1c28; --slate: #55556a; --slate-light: #88889c;
  --border: #e4e4e8; --bg: #f2f2f4; --card: #ffffff; --input-bg: #fafaf8;
  --green: #0a6b52; --green-bg: #e8f5f0; --red: #b02a22; --red-bg: #fdf0ee;
  --amber: #9a7200; --amber-bg: #fdf6e3;
  --radius: 8px; --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.03);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.02), 0 12px 32px rgba(0,0,0,0.05);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Plus Jakarta Sans", "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.55; font-size: 14px;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

/* ===== Top Nav ===== */
.top-nav { background: var(--purple); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.top-nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 16px 28px; min-height: 88px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav-brand { display: flex; align-items: center; gap: 16px; text-decoration: none; color: inherit; flex-shrink: 0; }
.nav-logo {
  width: 56px; height: 56px; border-radius: 12px;
  background: linear-gradient(145deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-muted) 100%);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.3rem; color: var(--purple-deep);
  letter-spacing: -0.04em; box-shadow: 0 2px 8px rgba(201,168,76,0.35), inset 0 1px 0 rgba(255,255,255,0.25);
}
.nav-brand-text { display: flex; flex-direction: column; gap: 1px; }
.nav-brand-name { font-size: 1.05rem; font-weight: 600; color: white; letter-spacing: -0.02em; }
.nav-brand-tag { font-size: 0.65rem; color: rgba(255,255,255,0.5); font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }
.nav-menu { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-menu a { display: block; padding: 8px 16px; font-size: 0.85rem; font-weight: 500; color: rgba(255,255,255,0.7); text-decoration: none; border-radius: 6px; transition: color 0.15s, background 0.15s; letter-spacing: 0.01em; white-space: nowrap; }
.nav-menu a:hover { color: white; background: rgba(255,255,255,0.1); }
.nav-menu a.active { color: var(--gold-light); background: rgba(201,168,76,0.15); font-weight: 600; }
.nav-toggle { display: none; width: 40px; height: 40px; border: none; background: rgba(255,255,255,0.12); color: white; border-radius: 6px; cursor: pointer; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: white; border-radius: 1px; transition: transform 0.2s, opacity 0.2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-menu { display: none; position: absolute; top: 88px; left: 0; right: 0; background: var(--purple); flex-direction: column; padding: 12px 20px 20px; border-bottom: 1px solid rgba(201,168,76,0.2); box-shadow: 0 8px 24px rgba(0,0,0,0.25); gap: 2px; }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 12px 16px; font-size: 0.9rem; }
}

/* ===== Page Header & Layout ===== */
.page-header { background: var(--purple); color: white; position: relative; padding-top: 6px; }
.page-header::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(201,168,76,0.4), transparent); }
.page-header-accent { height: 2px; background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 40%, transparent 100%); margin-bottom: 18px; }
.page-header-content { max-width: 1280px; margin: 0 auto; padding: 10px 36px 36px; }
.page-header-content h1 { font-size: 1.55rem; font-weight: 500; letter-spacing: -0.03em; margin-bottom: 4px; color: white; }
.page-header-content .h1-en { font-size: 0.9rem; font-weight: 400; color: rgba(255,255,255,0.42); margin-bottom: 10px; letter-spacing: 0.01em; }
.page-header-content p { font-size: 0.875rem; color: rgba(255,255,255,0.52); line-height: 1.55; max-width: 880px; font-weight: 400; }
.container { max-width: 1280px; margin: 0 auto; padding: 28px 36px 60px; }

/* ===== Cards & Forms ===== */
.card { background: var(--card); border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); margin-bottom: 20px; overflow: hidden; transition: box-shadow 0.2s ease; }
.card:hover { box-shadow: var(--shadow-lg); }
.card-header { padding: 14px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; background: linear-gradient(180deg, #fafafa 0%, #f6f6f7 100%); }
.card-header h2 { font-size: 1.05rem; font-weight: 600; color: var(--navy); display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.card-header h2 .en { font-size: 0.82rem; font-weight: 400; color: var(--slate-light); letter-spacing: 0.01em; }
.card-body { padding: 24px; }
.badge { font-size: 10px; font-weight: 600; background: var(--gold-soft); color: #6b5410; padding: 3px 10px; border-radius: 20px; letter-spacing: 0.04em; }

.form-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 960px) { .form-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .form-grid { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; gap: 6px; }
label { font-size: 0.72rem; font-weight: 500; color: var(--slate); letter-spacing: 0.02em; }
input, select { padding: 11px 13px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.9rem; font-family: inherit; background: var(--input-bg); color: var(--text); transition: border-color 0.15s, box-shadow 0.15s; }
input:focus, select:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,168,76,0.12); background: #fff; }
input:disabled { background: #f0f0f2; color: var(--slate-light); cursor: not-allowed; }

/* ===== Buttons, Summary & KPI ===== */
.btn-row { display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 11px 22px; border-radius: 6px; font-size: 0.85rem; font-weight: 600; font-family: inherit; cursor: pointer; border: none; transition: all 0.18s ease; }
.btn-primary { background: var(--purple); color: white; box-shadow: 0 1px 3px rgba(12,35,64,0.2); }
.btn-primary:hover { background: var(--purple-deep); box-shadow: 0 2px 8px rgba(12,35,64,0.25); transform: translateY(-1px); }
.btn-secondary { background: white; color: var(--navy); border: 1px solid var(--border); }
.btn-secondary:hover { background: #f7f7f8; border-color: #ccc; }

.summary-banner { text-align: center; padding: 22px; font-size: 1.0rem; font-weight: 600; letter-spacing: -0.02em; }
.summary-banner.profit { background: var(--green-bg); color: var(--green); }
.summary-banner.loss { background: var(--red-bg); color: var(--red); }
.summary-banner.breakeven { background: var(--amber-bg); color: var(--amber); }
.summary-banner.info { background: linear-gradient(180deg, #f0f4f8 0%, #e8eef4 100%); color: var(--purple); }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border-top: 1px solid var(--border); }
@media (max-width: 720px) { .kpi-row { grid-template-columns: 1fr 1fr; } }
.kpi { background: white; padding: 20px 16px; text-align: center; }
.kpi:hover { background: #fafafa; }
.kpi-label { font-size: 0.66rem; color: var(--slate-light); font-weight: 500; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.06em; }
.kpi-value { font-size: 1.12rem; font-weight: 700; color: var(--navy); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.kpi-value.green { color: var(--green); }
.kpi-value.red { color: var(--red); }
.kpi-value.gold { color: var(--gold-muted); }

/* ===== Data Sections ===== */
.section { padding: 24px; border-top: 1px solid var(--border); }
.section-title { font-size: 1.02rem; font-weight: 600; color: var(--navy); margin-bottom: 16px; display: flex; justify-content: space-between; align-items: center; }
.section-title-left { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.section-title-left::before { content: ''; display: inline-block; width: 3px; height: 16px; background: linear-gradient(180deg, var(--gold-light), var(--gold-muted)); border-radius: 1px; flex-shrink: 0; align-self: center; }
.section-title-left .en { font-size: 0.82rem; font-weight: 400; color: var(--slate-light); }
.toggle-link { font-size: 0.78rem; color: var(--purple); background: none; border: none; cursor: pointer; font-weight: 500; font-family: inherit; }
.toggle-link:hover { color: var(--gold-muted); }

.chart-box { position: relative; height: 300px; }
.table-scroll { max-height: 480px; overflow: auto; border: 1px solid var(--border); border-radius: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 0.8rem; font-variant-numeric: tabular-nums; }
th { background: #f8f8f9; font-weight: 600; color: var(--slate); text-align: right; padding: 11px 13px; border-bottom: 1px solid var(--border); position: sticky; top: 0; white-space: nowrap; z-index: 1; font-size: 0.75rem; letter-spacing: 0.01em; }
th:first-child { text-align: left; }
td { padding: 9px 13px; text-align: right; border-bottom: 1px solid #f0f0f2; color: var(--text); }
td:first-child { text-align: left; font-weight: 500; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafafa; }

.sens-wrap { overflow-x: auto; border-radius: 6px; border: 1px solid var(--border); }
.sens-table { border: none; }
.sens-table th, .sens-table td { text-align: center; min-width: 80px; }
.sens-table th:first-child, .sens-table td:first-child { text-align: left; min-width: 115px; }
.sens-table td.pos { color: var(--green); font-weight: 600; }
.sens-table td.neg { color: var(--red); }
.sens-table td.zero { color: var(--amber); }

.note { background: #f7f7f8; border-left: 3px solid var(--gold); border-radius: 0 6px 6px 0; padding: 16px 20px; font-size: 0.8rem; color: var(--slate); line-height: 1.7; }
.note strong { display: block; margin-bottom: 8px; color: var(--navy); font-size: 1.0rem; }
.note strong .en { font-weight: 400; color: var(--slate-light); font-size: 0.84rem; margin-left: 6px; }
.note ul { margin: 0 0 0 18px; }

footer { text-align: center; padding: 36px 0 20px; border-top: 1px solid var(--border); margin-top: 8px; }
.footer-copy { font-size: 0.76rem; color: var(--slate-light); letter-spacing: 0.02em; }
.footer-copy a { color: var(--purple); text-decoration: none; font-weight: 600; }
.footer-copy a:hover { color: var(--gold-muted); }
.footer-disclaimer { font-size: 0.7rem; color: var(--slate-light); margin-top: 6px; }

@media print {
  .top-nav, .btn-row, .toggle-link, .nav-toggle { display: none !important; }
  .table-scroll { max-height: none; }
  .card { break-inside: avoid; box-shadow: none; }
}