:root {
  --bg: #f4f4f4;
  --panel: #ffffff;
  --panel-soft: #f7f7f7;
  --text: #1a1a1a;
  --muted: #666666;
  --line: #e5e5e5;
  --line-strong: rgba(17, 17, 17, 0.18);
  --accent: #111111;
  --shadow: 0 20px 50px rgba(17, 17, 17, 0.06);
  --radius: 24px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Zen Kaku Gothic Antique", sans-serif;
  background:
    radial-gradient(circle at top, rgba(0, 0, 0, 0.04), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  color: var(--text);
}

button,
input,
textarea {
  font: inherit;
}

.page-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 120px;
}

.hero {
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  margin-bottom: 28px;
}

.hero__eyebrow {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero__title {
  margin: 12px 0 10px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.hero__lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  line-height: 2;
  font-size: 15px;
}

.layout {
  display: block;
}

.main-column {
  display: grid;
  gap: 28px;
}

.panel {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.panel--result {
  margin-top: 8px;
}

.panel__head {
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--line);
}

.panel__head--summary {
  background: linear-gradient(180deg, rgba(247, 247, 247, 0.9), rgba(255, 255, 255, 0.9));
}

.panel__step {
  display: inline-flex;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.panel__title {
  margin: 12px 0 0;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.panel__body {
  padding: 28px;
}

.panel__body--stack,
.section-block,
.section-block__head,
.option-list,
.action-stack,
.breakdown,
.breakdown__list,
.field {
  display: grid;
  gap: 16px;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.plan-grid--single {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.plan-card {
  position: relative;
  padding: 22px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(248, 248, 248, 0.92), rgba(255, 255, 255, 1));
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  text-align: left;
  overflow: hidden;
}

.plan-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17, 17, 17, 0.08), transparent 58%);
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}

.plan-card:hover {
  transform: translateY(-3px);
  border-color: rgba(17, 17, 17, 0.25);
  box-shadow: 0 16px 28px rgba(17, 17, 17, 0.08);
}

.plan-card:hover::after,
.plan-card:focus-visible::after {
  opacity: 1;
}

.plan-card:focus-visible {
  outline: 2px solid rgba(17, 17, 17, 0.22);
  outline-offset: 2px;
}

.plan-card.is-active {
  border-color: #111111;
  box-shadow: 0 18px 28px rgba(17, 17, 17, 0.18);
  background: linear-gradient(180deg, rgba(17, 17, 17, 1), rgba(36, 36, 36, 1));
  color: #ffffff;
}

.plan-card.is-active::after {
  opacity: 0.22;
}

.plan-card.is-active .plan-card__chip {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.72);
}

.plan-card.is-active .plan-card__lead {
  color: rgba(255, 255, 255, 0.76);
}

.plan-card.is-active .plan-card__price::before {
  color: rgba(255, 255, 255, 0.6);
}

.plan-card__chip {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

.plan-card__title,
.section-block__title {
  margin: 0;
  font-size: 22px;
  font-weight: 500;
}

.plan-card__title,
.plan-card__price,
.plan-card__lead,
.plan-card__price::before {
  color: inherit;
}

.plan-card__price {
  margin: 12px 0 8px;
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.plan-card__price::before {
  content: "参考価格";
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.plan-card__lead,
.section-block__desc,
.field__label,
.notice {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: 13px;
}

.plan-card__features {
  display: grid;
  gap: 8px;
}

.plan-card__feature,
.breakdown-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.plan-card__feature {
  font-size: 13px;
  color: var(--muted);
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.option-row {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  padding: 16px 18px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  position: relative;
}

.option-row:hover {
  transform: translateY(-1px);
  border-color: rgba(17, 17, 17, 0.18);
  box-shadow: 0 10px 22px rgba(17, 17, 17, 0.05);
}

.option-row.is-selected {
  border-color: #111111;
  background: linear-gradient(180deg, rgba(17, 17, 17, 1), rgba(36, 36, 36, 1));
  box-shadow: 0 16px 28px rgba(17, 17, 17, 0.14);
  color: #ffffff;
}

.option-row.is-selected .option-row__title,
.option-row.is-selected .option-row__price {
  color: #ffffff;
}

.option-row.is-selected .option-row__desc,
.option-row.is-selected .option-row__price-sub {
  color: rgba(255, 255, 255, 0.72);
}

.option-row.is-selected .option-row__check {
  accent-color: #ffffff;
}

.option-row.is-selected .qty-btn {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.option-row.is-selected .qty-btn:hover {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.14);
}

.option-row.is-selected .qty-value {
  color: #ffffff;
}

.option-row.is-disabled {
  opacity: 0.76;
}

.option-row__main {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
}

.option-row__check {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--accent);
}

.option-row__check:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.option-row__title {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
}

.option-row__desc,
.option-row__price-sub,
.breakdown-item__meta {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 12px;
}

.option-row__price,
.breakdown-item__price {
  text-align: right;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}

.option-row__qty {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
}

.qty-btn {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.qty-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(17, 17, 17, 0.28);
  background: #ffffff;
}

.qty-value {
  min-width: 22px;
  text-align: center;
}

.field__input,
.field__textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.95);
  padding: 14px 16px;
  color: var(--text);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.field__input:focus,
.field__textarea:focus {
  outline: none;
  border-color: rgba(17, 17, 17, 0.28);
  box-shadow: 0 0 0 4px rgba(17, 17, 17, 0.05);
  background: #ffffff;
}

.summary-card {
  padding: 26px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.98), rgba(51, 51, 51, 0.95));
  color: #ffffff;
}

.summary-card__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.summary-card__plan {
  margin-top: 10px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.86);
}

.summary-card__price {
  margin-top: 10px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.05em;
}

.summary-card__sub {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.breakdown__title {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.breakdown-item {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.breakdown-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.notice {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--text);
  border-radius: 999px;
  padding: 14px 18px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.action-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(17, 17, 17, 0.08);
  border-color: rgba(17, 17, 17, 0.28);
}

.action-btn:focus-visible {
  outline: 2px solid rgba(17, 17, 17, 0.22);
  outline-offset: 2px;
}

.action-btn--primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.action-btn--line {
  background: #ffffff;
  color: #111111;
  border-color: rgba(6, 199, 85, 0.38);
}

.action-btn--contact {
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.96), rgba(51, 51, 51, 0.96));
  color: #ffffff;
  border-color: rgba(17, 17, 17, 0.92);
}

.action-btn--line .action-btn__icon {
  color: #06c755;
}

.action-btn--ghost {
  background: var(--panel-soft);
}

.action-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
}

.action-btn__icon svg {
  width: 100%;
  height: 100%;
}

.action-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%) translateY(14px);
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(17, 17, 17, 0.92);
  color: #ffffff;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.sticky-summary {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: min(1120px, calc(100% - 24px));
  z-index: 20;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.sticky-summary__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgba(17, 17, 17, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 12px 28px rgba(17, 17, 17, 0.1);
  backdrop-filter: blur(14px);
  pointer-events: auto;
}

.sticky-summary__meta {
  display: grid;
  gap: 4px;
}

.sticky-summary__label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.sticky-summary__plan {
  font-size: 14px;
  color: var(--text);
}

.sticky-summary__price {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.sticky-summary__btn {
  border: 1px solid #111111;
  background: #111111;
  color: #ffffff;
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.sticky-summary__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(17, 17, 17, 0.16);
}

.print-sheet {
  display: none;
}

@media (max-width: 980px) {
  .page-shell {
    width: min(100% - 24px, 100%);
    padding-top: 32px;
    padding-bottom: 120px;
  }

  .hero__title {
    font-size: clamp(28px, 6vw, 40px);
  }

  .panel__head,
  .panel__body {
    padding-left: 22px;
    padding-right: 22px;
  }

  .plan-grid,
  .plan-grid--single {
    grid-template-columns: 1fr;
  }

  .sticky-summary__inner {
    grid-template-columns: 1fr auto;
  }

  .sticky-summary__btn {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 100%);
    padding-top: 24px;
    padding-bottom: 132px;
  }

  .plan-grid {
    grid-template-columns: 1fr;
  }

  .plan-grid--single {
    grid-template-columns: 1fr;
  }

  .panel__head,
  .panel__body {
    padding-left: 18px;
    padding-right: 18px;
  }

  .panel__title {
    font-size: 21px;
  }

  .option-row__main {
    grid-template-columns: auto 1fr;
  }

  .option-row__price {
    grid-column: 2;
    text-align: left;
  }

  .action-btn {
    justify-content: flex-start;
    text-align: left;
    border-radius: 18px;
  }

  .summary-card {
    padding: 22px 20px;
  }

  .summary-card__price {
    font-size: clamp(30px, 10vw, 42px);
  }

  .sticky-summary {
    width: calc(100% - 16px);
    bottom: 10px;
  }

  .sticky-summary__inner {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px 14px;
  }

  .sticky-summary__price {
    font-size: 20px;
  }

  .sticky-summary__btn {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .hero__lead,
  .section-block__desc,
  .notice,
  .field__label {
    font-size: 12px;
    line-height: 1.75;
  }

  .option-row {
    padding: 14px 14px 14px 16px;
  }

  .option-row__title {
    font-size: 14px;
  }

  .option-row__desc,
  .option-row__price-sub,
  .breakdown-item__meta {
    font-size: 11px;
  }

  .sticky-summary__plan {
    font-size: 13px;
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 10mm;
  }

  html,
  body {
    width: 210mm;
    height: 297mm;
    background: #ffffff;
  }

  body > .sticky-summary,
  body > .page-shell,
  body > .toast {
    display: none !important;
  }

  .print-sheet {
    display: block;
    width: 100%;
    max-width: 190mm;
    min-height: 0;
    padding: 0;
    color: #111111;
    font-family: "Zen Kaku Gothic Antique", sans-serif;
  }

  .print-sheet__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    border-bottom: 1px solid #111111;
    padding-bottom: 14px;
  }

  .print-sheet__brand,
  .print-sheet__section-title {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #5d6a7b;
  }

  .print-sheet__title {
    margin: 8px 0 0;
    font-size: 26px;
    font-weight: 500;
    letter-spacing: -0.03em;
  }

  .print-sheet__meta,
  .print-sheet__note {
    font-size: 12px;
    color: #5d6a7b;
    line-height: 1.8;
  }

  .print-sheet__total {
    margin-top: 18px;
    padding: 18px 20px;
    border: 1px solid #111111;
    background:
      linear-gradient(135deg, rgba(17, 17, 17, 0.04), transparent 45%),
      #fbfbfb;
    page-break-inside: avoid;
  }

  .print-sheet__total-label {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #5d6a7b;
  }

  .print-sheet__total-value {
    margin-top: 10px;
    font-size: 36px;
    line-height: 1;
    letter-spacing: -0.05em;
  }

  .print-sheet__total-sub {
    margin-top: 10px;
    font-size: 12px;
    color: #5d6a7b;
  }

  .print-sheet__section {
    margin-top: 16px;
    page-break-inside: avoid;
  }

  .print-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    table-layout: fixed;
    border: 1px solid #d8dee6;
  }

  .print-table thead th {
    background: #f3f4f6;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #525f70;
  }

  .print-table th,
  .print-table td {
    border-right: 1px solid #d8dee6;
    border-bottom: 1px solid #d8dee6;
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
    font-size: 11px;
    line-height: 1.6;
  }

  .print-table th:last-child,
  .print-table td:last-child {
    border-right: none;
  }

  .print-table tbody tr:last-child td {
    border-bottom: none;
  }

  .print-table tbody td:nth-child(1) {
    width: 28%;
    font-weight: 500;
  }

  .print-table tbody td:nth-child(2) {
    width: 48%;
    color: #5d6a7b;
  }

  .print-table tbody td:nth-child(3) {
    width: 24%;
    text-align: right;
    font-weight: 600;
    white-space: nowrap;
  }

  .print-sheet__message {
    min-height: 34mm;
    max-height: 88mm;
    overflow: hidden;
    padding: 12px;
    border: 1px solid #d8dee6;
    background: #fbfbfb;
    white-space: pre-wrap;
    line-height: 1.6;
    font-size: 11px;
  }

  .print-sheet__note {
    margin-top: 10px;
    font-size: 11px;
    line-height: 1.6;
    border-top: 1px solid #d8dee6;
    padding-top: 8px;
  }
}