:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #6b7785;
  --border: #e3e7ec;
  --primary: #2563eb;
  --keep: #16a34a;
  --keep-bg: #ecfdf3;
  --keep-border: #86efac;
  --cut: #dc2626;
  --cut-bg: #fef2f2;
  --cut-border: #fca5a5;
  --warn: #b45309;
  --warn-bg: #fff7ed;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 2px 8px rgba(16, 24, 40, .04);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.6;
  font-size: 15px;
}
.container { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { line-height: 1.35; margin: 0; }
button, input, select { font: inherit; color: inherit; }
.small { font-size: 12px; color: var(--muted); }
[hidden] { display: none !important; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; padding-top: 14px; padding-bottom: 12px; }
.logo { font-size: 20px; font-weight: 800; letter-spacing: .02em; }
.tagline { margin: 0; color: var(--muted); font-size: 13px; }

/* Summary (sticky) */
.summary {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(16, 24, 40, .06);
  padding: 14px 0 12px;
}
.summary-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr); gap: 12px; }
.stat {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 14px; display: flex; flex-direction: column; gap: 2px; min-width: 0;
}
.stat-label { font-size: 12px; color: var(--muted); font-weight: 600; }
.stat-value { font-size: 28px; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.stat-value small { font-size: 14px; margin-left: 2px; font-weight: 700; }
.stat-save { background: linear-gradient(135deg, #fff5f5, #fff); border-color: var(--cut-border); }
.save-line { font-size: 15px; font-weight: 700; }
.save-line strong { font-size: 30px; color: var(--cut); font-variant-numeric: tabular-nums; margin: 0 2px; }
.save-sub { font-size: 13px; color: var(--muted); }
.save-sub strong { color: var(--text); font-size: 16px; font-variant-numeric: tabular-nums; }

.warn-badge {
  align-self: flex-start; margin-top: 4px;
  background: var(--warn-bg); color: var(--warn); border: 1px solid #fdba74;
  font-size: 12px; font-weight: 800; padding: 2px 10px; border-radius: 999px;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(234, 88, 12, .35); }
  50% { transform: scale(1.04); box-shadow: 0 0 0 6px rgba(234, 88, 12, 0); }
}
.stat.is-warn { border-color: #fdba74; background: var(--warn-bg); }
.stat.is-warn .stat-value { color: var(--warn); }

.summary-message { margin: 10px 0 8px; font-weight: 700; font-size: 15px; text-align: center; }
.summary-message.has-saving { color: var(--cut); }
.summary-message .num { font-size: 20px; font-variant-numeric: tabular-nums; }
.bump { animation: bump .35s ease; }
@keyframes bump { 0% { transform: scale(1); } 40% { transform: scale(1.08); } 100% { transform: scale(1); } }

.summary-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; max-height: 40vh; overflow: auto; }
.detail-col { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.detail-col h3 { font-size: 13px; margin-bottom: 6px; }
.detail-col ul { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.detail-col li { display: flex; justify-content: space-between; gap: 8px; padding: 3px 0; border-bottom: 1px dashed var(--border); }
.detail-col li:last-child { border-bottom: 0; }
.detail-col li.empty { color: var(--muted); justify-content: flex-start; }

/* Buttons */
.btn {
  border: 1px solid transparent; border-radius: 999px; padding: 9px 18px;
  font-weight: 700; font-size: 14px; cursor: pointer; transition: transform .08s, background .15s, opacity .15s;
  min-height: 40px;
}
.btn:active { transform: scale(.97); }
.btn:focus-visible, .seg button:focus-visible, input:focus-visible { outline: 3px solid rgba(37, 99, 235, .35); outline-offset: 2px; }
.btn-x { background: #0f1419; color: #fff; }
.btn-x:hover { background: #272c30; }
.btn-ghost { background: var(--surface); border-color: var(--border); }
.btn-ghost:hover { background: #f1f4f7; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-text { background: none; color: var(--muted); text-decoration: underline; padding: 6px 8px; }

/* Sections */
main { padding-top: 20px; padding-bottom: 32px; }
section h2 { font-size: 18px; font-weight: 800; }
.hint { color: var(--muted); font-size: 13px; margin: 6px 0 14px; }

/* Recommend */
.recommend {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin-bottom: 28px; box-shadow: var(--shadow);
}
.pr-badge {
  display: inline-block; vertical-align: middle; font-size: 11px; font-weight: 800;
  border: 1px solid var(--muted); color: var(--muted); border-radius: 4px; padding: 0 6px; margin-left: 4px;
}
.pr-notice { font-size: 12px; color: var(--muted); margin: 6px 0 12px; background: #f6f7f9; border-radius: 8px; padding: 8px 10px; }
.rec-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.rec-card {
  position: relative; border: 1px solid var(--border); border-radius: 12px; padding: 14px;
  display: flex; flex-direction: column; gap: 6px; background: #fff;
}
.rec-card .rec-pr { position: absolute; top: 10px; right: 10px; font-size: 10px; font-weight: 800; color: var(--muted); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; }
.rec-icon { font-size: 26px; }
.rec-tag { font-size: 11px; font-weight: 700; color: var(--primary); }
.rec-card h3 { font-size: 15px; }
.rec-card p { margin: 0; font-size: 13px; color: #45505c; flex: 1; }
.rec-estimate { font-size: 12px; font-weight: 700; color: var(--keep); }
.rec-cta {
  margin-top: 6px; display: block; text-align: center; text-decoration: none;
  background: #f0f5ff; color: var(--primary); border: 1px solid #c7d7fe; border-radius: 999px;
  padding: 8px 12px; font-weight: 700; font-size: 13px;
}
.rec-cta:hover { background: #e2ebff; }

/* Sorter */
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.legend { display: flex; gap: 6px; font-size: 12px; font-weight: 700; }
.lg { padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); }
.lg-keep { background: var(--keep-bg); border-color: var(--keep-border); color: var(--keep); }
.lg-cut { background: var(--cut-bg); border-color: var(--cut-border); color: var(--cut); }
.lg-off { color: var(--muted); background: #fff; }

.category { margin-bottom: 22px; }
.cat-title { font-size: 15px; font-weight: 800; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.cat-sum { font-size: 12px; font-weight: 600; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }

.card {
  background: var(--surface); border: 2px solid var(--border); border-radius: var(--radius);
  padding: 12px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .15s, background .15s, box-shadow .15s;
  box-shadow: var(--shadow);
}
.card[data-status="off"] .card-name { color: var(--muted); }
.card[data-status="keep"] { border-color: var(--keep-border); background: var(--keep-bg); }
.card[data-status="cut"] { border-color: var(--cut-border); background: var(--cut-bg); }
.card[data-status="cut"] .card-name { text-decoration: line-through; text-decoration-color: rgba(220, 38, 38, .5); }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.card-name {
  flex: 1; min-width: 0; width: 100%;
  font-weight: 800; font-size: 15px; color: var(--text);
  border: 1px solid transparent; border-radius: 6px; background: transparent;
  padding: 3px 22px 3px 4px; margin: -3px 0 -3px -4px;
  text-overflow: ellipsis; cursor: text;
  /* 鉛筆アイコンで編集できることを示す */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239aa5b1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 20h9'/%3E%3Cpath d='M16.5 3.5a2.1 2.1 0 0 1 3 3L7 19l-4 1 1-4Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 4px center; background-size: 13px;
}
.card-name:hover { border-color: var(--border); background-color: rgba(255, 255, 255, .7); }
.card-name:focus { border-color: var(--primary); background-color: #fff; background-image: none; outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .15); text-decoration: none !important; }
.card-del { border: 0; background: none; color: var(--muted); font-size: 18px; cursor: pointer; line-height: 1; padding: 4px 6px; border-radius: 6px; }
.card-del:hover { background: #eef1f4; color: var(--cut); }

.price-wrap { display: flex; align-items: center; gap: 4px; }
.price-wrap em { font-style: normal; font-size: 13px; color: var(--muted); white-space: nowrap; }

.price-wrap input {
  width: 100%; min-width: 0; border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  font-size: 16px; font-weight: 700; text-align: right; background: #fff; font-variant-numeric: tabular-nums;
}
.card[data-status="off"] .price-wrap input { color: var(--muted); }
.plan-select {
  width: 100%; min-width: 0; font-size: 13px; font-weight: 600; color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 28px 6px 8px; background-color: #fff;
  appearance: none; -webkit-appearance: none; cursor: pointer; text-overflow: ellipsis;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7785' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center; background-size: 14px;
}
.plan-select:focus-visible { outline: 3px solid rgba(37, 99, 235, .35); outline-offset: 2px; }
.card[data-status="off"] .plan-select { color: var(--muted); }

.seg { display: grid; grid-template-columns: 1fr 1fr 1fr; background: #eef1f4; border-radius: 10px; padding: 3px; gap: 3px; }
.seg button {
  border: 0; background: transparent; border-radius: 8px; padding: 8px 2px; min-height: 40px;
  font-size: 12.5px; font-weight: 700; color: var(--muted); cursor: pointer; transition: background .12s, color .12s;
}
.seg button.s-keep { color: var(--keep); }
.seg button.s-cut { color: var(--cut); }
.seg button[aria-pressed="true"].s-off { background: #fff; color: var(--text); box-shadow: 0 1px 2px rgba(0, 0, 0, .08); }
.seg button[aria-pressed="true"].s-keep { background: var(--keep); color: #fff; }
.seg button[aria-pressed="true"].s-cut { background: var(--cut); color: #fff; }

/* Custom form */
.custom-add { background: var(--surface); border: 1px dashed #c3cbd5; border-radius: var(--radius); padding: 16px; }
.custom-form { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; font-weight: 700; color: var(--muted); flex: 1 1 220px; }
.field-price { flex: 0 1 160px; }
.field input { border: 1px solid var(--border); border-radius: 8px; padding: 9px 10px; font-size: 16px; color: var(--text); background: #fff; width: 100%; }
.reset-row { text-align: center; margin-top: 8px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); padding: 20px 0 28px; text-align: center; }
.site-footer p { margin: 4px 0; }
.privacy { font-weight: 700; color: var(--keep); background: var(--keep-bg); display: inline-block; padding: 8px 14px; border-radius: 10px; font-size: 13px; }
.copy { margin-top: 10px !important; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: #1f2933; color: #fff; padding: 10px 18px; border-radius: 999px; font-size: 13px; font-weight: 700;
  z-index: 50; box-shadow: 0 6px 20px rgba(0, 0, 0, .2);
}

/* Responsive */
@media (max-width: 760px) {
  .rec-grid { grid-template-columns: minmax(0, 1fr); }
  .summary { padding: 10px 0 8px; }
  .summary-grid { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 8px; }
  .stat-save { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; align-items: baseline; column-gap: 10px; }
  .stat-save .stat-label { width: 100%; }
  .stat { padding: 8px 10px; }
  .stat-value { font-size: 21px; }
  .save-line strong { font-size: 24px; }
  .summary-message { font-size: 13px; margin: 6px 0; }
  .summary-message .num { font-size: 16px; }
  .btn { padding: 7px 14px; font-size: 13px; min-height: 36px; }
  .detail { grid-template-columns: minmax(0,1fr); max-height: 32vh; }
  .cards { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 8px; }
  .card { padding: 10px; gap: 8px; }
  .card-name { font-size: 14px; }

  .seg button { font-size: 12px; white-space: nowrap; }
  .seg .em { display: none; }
}
@media (max-width: 340px) {
  .cards { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}