/* ================================================================
   POLUS — Contemporary Residence
   今回添付の index.html 用。HTML・JavaScriptの変更は不要です。
   01: 配色と基本設定 / 02: 共通部品 / 03〜11: 掲載順の各セクション
   色は :root の変数で編集。各部品の色は基本ルールで一度だけ指定し、
   画面幅別ルールでは配置・サイズを調整します。
   ================================================================ */
/*//////////////////////////////////////////////////////////////////////////
  1. Reset - リセット
//////////////////////////////////////////////////////////////////////////*/
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, textarea, p, blockquote, th, td { margin: 0; padding: 0; }
table { border-collapse: collapse; border-spacing: 0; }
fieldset, img { border: 0; vertical-align: bottom; }
address, caption, cite, code, dfn, em, strong, th, var { font-style: normal; font-weight: normal; }
ol, ul { list-style: none; }
caption, th { text-align: left; }
h1, h2, h3, h4, h5, h6 { font-size: 100%; font-weight: normal; }
q:before, q:after { content: ''; }
abbr, acronym { border: 0; }
*, *:before, *:after { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; -o-box-sizing: border-box; -ms-box-sizing: border-box; box-sizing: border-box; }

/* 01. 配色・基本設定 */
:root {
  --ink: #23362f;
  --text: #43524b;
  --muted: #64736b;
  --line: #dee3dc;
  --paper: #ffffff;
  --canvas: #fafaf7;
  --surface: #f0f3ed;
  --green: #00A040;
  --green-hover: #005237;
  --green-soft: #e8f1e9;
  --accent: #127191;
  --accent-hover: #0b5356;
  --accent-soft: #f8eee6;
  --accent-check: #d0312d;
  --inverse: #ffffff;
  --footer: #20392f;
  --footer-text: #ffffff;
  --footer-muted: #dce6df;
  --radius: 8px;
  --shadow: 0 12px 40px rgb(31 53 41 / 0.045);
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--text);
  background: var(--canvas);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    sans-serif;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.025em;
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
h4,
p {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
select {
  font: inherit;
}
button {
  cursor: pointer;
}
button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
svg {
  display: block;
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 4px;
}
section[id] {
  scroll-margin-top: 125px;
}
.bl {
  display: inline-block;
}
.desktop-only {
  display: none;
}
.mobile-only {
  display: inline;
}

/* 02. 共通の余白・見出し・ボタン */
.container {
  width: min(100%, 1280px);
  padding-inline: 24px;
  margin-inline: auto;
}
.section {
  padding-block: 72px;
}
.section-header {
  max-width: 100%;
  margin: 0 0 36px;
  text-align: left;
}
.section-eyebrow,
.search-eyebrow {
  display: block;
  margin-bottom: 14px;
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.section-title,
.achievement-section-title,
.contact-section-title {
  color: var(--ink);
  font-size: clamp(25px, 3.15vw, 42px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.045em;
  text-wrap: balance;
}
.section-description {
  max-width: 830px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.95;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
  text-align: center;
  transition:
    background-color 0.2s,
    border-color 0.2s,
    box-shadow 0.2s;
}
.button:active {
  transform: translateY(1px);
}
.button-icon {
  flex-shrink: 0;
  font-size: 0.85em;
}
.button--full {
  display: flex;
  width: 100%;
}
.button--accent {
  color: var(--inverse);
  background: var(--accent);
}
.button--accent:hover {
  background: var(--accent-hover);
}
.button--polus,
.button--primary {
  color: var(--inverse);
  background: var(--green);
}
.button--polus:hover,
.button--primary:hover {
  background: var(--green-hover);
}
.button--dark {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--line);
}
.button--dark:hover {
  background: var(--surface);
  border-color: var(--muted);
}
.button--glass {
  color: var(--inverse);
  background: rgb(18 37 27 / 0.24);
  border-color: rgb(255 255 255 / 0.6);
  backdrop-filter: blur(8px);
}
.button--glass:hover {
  background: rgb(18 37 27 / 0.55);
  border-color: var(--inverse);
}
.button--outline {
  color: var(--green);
  background: transparent;
  border-color: #b6cbbb;
}
.button--outline:hover {
  color: var(--inverse);
  background: var(--green);
  border-color: var(--green);
}
.text-button {
  min-height: 44px;
  padding: 10px 24px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--text);
  background: var(--paper);
  font-size: 13px;
}
.text-button:hover {
  background: var(--surface);
  border-color: var(--muted);
}

/* 03. ヘッダー。告知は可読性を確保した落ち着いた配色 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}
.maintenance-bar {
  padding-block: 7px;
  color: #735019;
  background: #f5efdc;
  border-bottom: 1px solid #e9e0c5;
}
.maintenance-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.maintenance-icon {
  flex-shrink: 0;
  font-size: 11px;
}
.maintenance-message {
  font-size: 11px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.035em;
}
.header-navigation {
  background: rgb(255 255 255 / 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-block: 14px;
}
.brand-link {
  display: inline-block;
  min-width: 0;
}
.brand-link:hover {
  opacity: 0.8;
}
.brand-logo {
  width: auto;
  height: 26px;
  max-width: 138px;
  object-fit: contain;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-shrink: 0;
}
.header-contact {
  display: none;
  text-align: right;
}
.header-contact-title {
  display: block;
  color: var(--text);
  font-size: 11px;
  font-weight: 500;
}
.header-contact-note {
  display: block;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}
.header-reservation {
  min-height: 40px;
  padding: 9px 15px;
  font-size: 12px;
  white-space: nowrap;
}

/* 04. 写真と余白で見せるメインビジュアル */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--inverse);
  background: #254237;
}
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 560px;
  padding-block: 64px 80px;
}
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgb(14 31 22 / 0.66),
    rgb(14 31 22 / 0.29) 60%,
    rgb(14 31 22 / 0.08)
  );
}
.hero-bottom-fade {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 180px;
  background: linear-gradient(0deg, rgb(14 31 22 / 0.22), transparent);
}
.hero-caption {
  position: absolute;
  right: 16px;
  bottom: 14px;
  z-index: 2;
  max-width: calc(100% - 32px);
  padding: 4px 9px;
  border-radius: 2px;
  color: var(--inverse);
  background: rgb(13 31 21 / 0.65);
  font-size: 9px;
  line-height: 1.7;
}
.hero-content {
  position: relative;
  z-index: 1;
  font-family: 'Noto Serif JP', "游明朝体", YuMincho, serif;
  font-feature-settings: "palt";
}
.hero-copy {
  max-width: 920px;
}
.hero-award {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  padding: 0 0 12px;
  border-bottom: 1px solid rgb(255 255 255 / 0.45);
  font-size: 11px;
  font-weight: 500;
}
.hero-award-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #cfdbb5;
}
.hero-award-label {
  letter-spacing: 0.08em;
}
.hero-title {
  margin-bottom: 24px;
  font-size: clamp(34px, 4.3vw, 60px);
  font-weight: 500;
  line-height: 1.65;
  letter-spacing: 0.065em;
  text-wrap: balance;
  text-shadow: 0 2px 20px rgb(0 0 0 / 0.18);
}
.hero-description {
  max-width: 690px;
  margin-bottom: 32px;
  font-size: 13px;
  font-weight: 400;
  line-height: 2.15;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 8px rgb(0 0 0 / 0.2);
}
.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}
.hero-search,
.hero-about {
  min-height: 54px;
  padding: 14px 25px;
  font-size: 14px;
}
.hero-search {
  min-width: 200px;
}
.hero-star {
  color: #e7dfbd;
  font-size: 12px;
}

/* 05. フェア。予約・詳細の優先順位を整理 */
.campaign-section {
  padding-block: 28px 40px;
  background: var(--paper);
}
.campaign-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.campaign-banner {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  padding: 0;
  border: 0;
  color: var(--inverse);
  background: #254237;
  text-align: left;
}
.campaign-image {
  width: 100%;
  min-height: 150px;
  max-height: 260px;
  object-fit: cover;
  transition: 0.4s;
}
.campaign-banner:hover .campaign-image {
  opacity: 0.8;
  transition: 0.4s;
}
.campaign-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 11px;
  border: 1px solid rgb(255 255 255 / 0.3);
  background: rgb(21 41 29 / 0.78);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
}
.campaign-caption {
  position: absolute;
  right: 10px;
  bottom: 9px;
  max-width: calc(100% - 20px);
  padding: 3px 8px;
  background: rgb(21 41 29 / 0.78);
  font-size: 9px;
  line-height: 1.7;
}
.campaign-caption-note {
  display: none;
}
.campaign-summary {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  gap: 20px;
  padding: 24px;
}
.campaign-summary-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}
.campaign-date {
  flex-shrink: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.campaign-summary-text {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.95;
}
.campaign-summary-value {
  color: var(--accent-check);
  font-size: 16px;
  font-weight: 700;
}
.campaign-desktop-separator {
  display: none;
}
.campaign-mobile-separator {
  display: inline;
}
.campaign-summary-note {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
}
.campaign-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.campaign-actions .button {
  flex: 1;
  min-height: 44px;
  padding: 10px 16px;
  font-size: 12px;
}
.accordion-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  transition: transform 0.2s;
}
[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}
.campaign-details {
  background: var(--canvas);
}
.campaign-details-inner {
  padding: 28px 24px;
  border-top: 1px solid var(--line);
}
.campaign-details-header {
  margin-bottom: 28px;
}
.campaign-details-title {
  color: var(--ink);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.65;
}
.campaign-benefits {
  display: grid;
  gap: 20px;
}
.campaign-benefit {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.campaign-benefit-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.campaign-contract-label,
.campaign-visit-label {
  padding: 4px 10px;
  color: var(--green);
  background: var(--green-soft);
  font-size: 11px;
  font-weight: 700;
}
.campaign-benefit-condition {
  color: var(--muted);
  font-size: 11px;
}
.campaign-benefit-title {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.9;
}
.campaign-benefit-value {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  font-size: clamp(22px, 2.4vw, 29px);
  font-weight: 700;
  line-height: 1.6;
}
.campaign-benefit-description {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.9;
}
.campaign-benefit-description p + p {
  margin-top: 8px;
}
.campaign-benefit-subtitle {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}
.campaign-benefit-action {
  margin-top: 24px;
}
.campaign-reservation {
  font-size: 13px;
}
.campaign-close {
  margin-top: 28px;
  text-align: center;
}

/* 06. 検索フォーム。主要な操作に色を絞る */
.property-section {
  padding-block: 64px 80px;
  background: var(--canvas);
}
.property-header {
  margin-bottom: 36px;
}
.search-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.search-status-dot {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--green);
}
.search-panel {
  margin: 0 0 30px;
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.search-panel-header {
  margin-bottom: 28px;
}
.search-eyebrow {
  margin-bottom: 8px;
  font-size: 10px;
}
.search-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
}
.search-title-icon,
.area-title-icon {
  color: var(--green);
  font-size: 0.9em;
}
.search-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}
.search-fields > div {
  min-width: 0;
}
.search-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
}
.search-select {
  width: 100%;
  min-height: 52px;
  padding: 13px 38px 13px 15px;
  border: 1px solid #cad4ca;
  border-radius: 4px;
  color: var(--ink);
  background-color: var(--paper);
  font-size: 14px;
  line-height: 1.7;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364736b' stroke-width='1.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  transition:
    border-color 0.18s,
    box-shadow 0.18s;
}
.search-select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgb(0 109 70 / 0.08);
}
.search-submit-cell {
  display: flex;
  align-items: end;
}
.search-submit {
  min-height: 52px;
  font-size: 15px;
}
.search-disclaimer {
  display: flex;
  align-items: start;
  gap: 9px;
  padding: 14px 0;
  border-block: 1px solid var(--line);
}
.search-disclaimer-icon {
  flex-shrink: 0;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}
.search-disclaimer-text {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.9;
}
.quick-search {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}
.quick-search-label {
  width: 100%;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}
.quick-search-button {
  min-height: 36px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
  background: var(--paper);
  font-size: 12px;
  font-weight: 400;
  transition:
    border-color 0.18s,
    background-color 0.18s;
}
.quick-search-button:hover {
  border-color: #9bb6a2;
  background: var(--green-soft);
}

/* 07. 都県タブと市区町村。並び順はHTML・JavaScriptのまま */
.area-panel {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.area-panel-header {
  display: flex;
  flex-direction: column;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}
.area-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
}
.area-description {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
}
.area-all-link {
  align-self: start;
  flex-shrink: 0;
  min-height: 40px;
  padding: 9px 14px;
  font-size: 11px;
}
.area-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.area-tab {
  position: relative;
  min-height: 48px;
  padding: 12px 6px;
  border: 0;
  color: var(--muted);
  background: transparent;
  font-size: 13px;
  font-weight: 500;
}
.area-tab::after {
  position: absolute;
  inset-inline: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
  content: "";
}
.area-tab[aria-pressed="true"] {
  color: var(--green);
  font-weight: 700;
}
.area-tab[aria-pressed="true"]::after {
  background: var(--green);
}
.area-tab[aria-pressed="false"]:hover {
  color: var(--ink);
  background: var(--canvas);
}
.area-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
}
.city-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  min-width: 0;
  min-height: 48px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  transition:
    color 0.18s,
    background-color 0.18s;
}
.city-link:hover {
  color: var(--green);
  background: var(--green-soft);
}
.city-name {
  min-width: 0;
  overflow-wrap: anywhere;
}
.city-arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: inherit;
  opacity: 0.55;
  transition: transform 0.18s;
}
.city-link:hover .city-arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* 08. 特徴カード。番号・線・左揃えで情報の階層をつくる */
.features-section {
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.feature-grid {
  display: grid;
  gap: 16px;
  counter-reset: feature;
}
.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  min-width: 0;
  padding: 28px;
  border: 1px solid #e1e6dc;
  border-radius: var(--radius);
  background: var(--paper);
  counter-increment: feature;
  transition: border-color 0.2s;
}
.feature-card::before {
  position: absolute;
  top: 24px;
  right: 28px;
  color: transparent;
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  content: counter(feature, decimal-leading-zero);
}
.feature-card:hover {
  border-color: #a4bcaa;
}
.feature-icon,
.contact-icon {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  color: var(--green);
  font-size: 25px;
}
.feature-label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.7;
  text-transform: uppercase;
}
.feature-title {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: 0.015em;
  text-align: left;
}
.feature-description {
  color: var(--text);
  font-size: 13px;
  line-height: 2;
}
.feature-footer {
  display: flex;
  flex-direction: column;
  align-items: start;
  gap: 6px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.8;
}
.feature-highlight {
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

/* 09. 実績。数字を引き立てる、枠のない3列 */
.achievements-section {
  background: var(--paper);
}
.achievement-grid {
  display: grid;
  gap: 0;
}
.achievement-card {
  min-width: 0;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.achievement-label {
  display: block;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.achievement-title {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.9;
}
.achievement-value {
  display: inline-block;
  margin-top: 8px;
  color: var(--green);
  font-size: clamp(27px, 2.7vw, 36px);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: -0.02em;
}
.achievement-description {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
  line-height: 2;
}
.registered-mark {
  font-size: 10px;
  vertical-align: super;
}

/* 10. 問い合わせ・SNS。予約を主、SNSを補助として見せる */
.contact-section {
  border-top: 1px solid var(--line);
  background: var(--canvas);
}
.contact-header {
  margin-bottom: 36px;
}
.contact-intro {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}
.contact-grid {
  display: grid;
  gap: 20px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.contact-icon {
  margin-bottom: 20px;
  font-size: 27px;
}
.contact-title {
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.8;
}
.contact-description {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
  line-height: 2;
}
.contact-action {
  margin-top: 28px;
}
.contact-form-link {
  min-height: 54px;
  font-size: 14px;
}
.contact-social-description {
  margin-bottom: 24px;
}
.social-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.social-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 140px;
  padding: 20px 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--canvas);
  transition:
    border-color 0.18s,
    background-color 0.18s;
}
.social-link:hover {
  background: var(--paper);
}
.social-link--line:hover {
  border-color: var(--green);
}
.social-link--youtube:hover {
  border-color: var(--accent);
}
.social-icon {
  width: 45px;
  height: 45px;
  margin-bottom: 6px;
  object-fit: contain;
}
.social-title {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}
.social-description {
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.8;
  text-align: center;
}

/* 11. フッター */
.site-footer {
  padding-block: 48px 26px;
  color: var(--footer-text);
  background: var(--footer);
  font-size: 13px;
}
.footer-contact {
  padding-bottom: 32px;
  border-bottom: 1px solid rgb(255 255 255 / 0.16);
}
.footer-brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  color: var(--inverse);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.footer-brand-english {
  color: var(--footer-muted);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.12em;
}
.footer-address {
  font-size: 12px;
  line-height: 2.1;
}
.footer-phone {
  color: var(--inverse);
  font-weight: 700;
}
.footer-phone:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-hours {
  color: var(--footer-muted);
  font-size: 11px;
}
.footer-legal {
  padding-block: 26px;
  border-bottom: 1px solid rgb(255 255 255 / 0.16);
  color: var(--footer-muted);
  font-size: 10px;
  line-height: 2;
}
.footer-legal p + p {
  margin-top: 8px;
}
.footer-legal-note {
  padding-top: 6px;
}
.footer-copyright {
  padding-top: 24px;
  color: var(--footer-muted);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-align: left;
}

/* 12. 画面幅別の配置。並べ替え・非表示による掲載内容の省略はしない */
@media (min-width: 640px) {
  .container {
    padding-inline: 36px;
  }
  .section {
    padding-block: 88px;
  }
  .desktop-only {
    display: inline;
  }
  .mobile-only {
    display: none;
  }
  .brand-logo {
    height: 34px;
    max-width: none;
  }
  .header-content {
    padding-block: 18px;
  }
  .header-reservation {
    min-height: 46px;
    padding: 12px 22px;
    font-size: 13px;
  }
  .hero-visual {
    min-height: 600px;
    padding-block: 84px;
  }
  .hero-description {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: row;
    align-items: center;
  }
  .hero-caption {
    right: 24px;
    bottom: 18px;
    font-size: 10px;
  }
  .campaign-section {
    padding-block: 32px 48px;
  }
  .campaign-caption-note {
    display: inline;
  }
  .campaign-summary {
    padding: 26px 28px;
  }
  .campaign-summary-content {
    gap: 10px;
  }
  .campaign-actions {
    width: fit-content;
  }
  .campaign-actions .button {
    flex: none;
    min-width: 120px;
  }
  .campaign-benefits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .campaign-details-inner {
    padding: 36px;
  }
  .property-section {
    padding-block: 80px 96px;
  }
  .section-header {
    margin-bottom: 42px;
  }
  .search-panel,
  .area-panel {
    padding: 32px;
  }
  .search-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 20px;
  }
  .quick-search-label {
    width: auto;
    margin-bottom: 0;
    margin-right: 4px;
  }
  .area-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
  }
  .city-link {
    font-size: 13px;
    min-height: 52px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .feature-card {
    padding: 30px;
  }
  .feature-card::before {
    right: 30px;
  }
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .contact-card {
    padding: 32px;
  }
}
@media (min-width: 960px) {
  .container {
    padding-inline: 48px;
  }
  .section {
    padding-block: 104px;
  }
  .header-contact {
    display: block;
  }
  .hero-visual {
    min-height: 650px;
  }
  .hero-award {
    margin-bottom: 30px;
    font-size: 12px;
  }
  .campaign-summary {
    flex-direction: row;
    align-items: center;
    gap: 24px;
  }
  .campaign-summary-content {
    flex: 1;
  }
  .campaign-summary-text {
    font-size: 12px;
  }
  .campaign-actions .button {
    min-width: auto;
  }
  .property-section {
    padding-block: 88px 112px;
  }
  .search-panel,
  .area-panel {
    padding: 36px 40px;
  }
  .search-fields {
    grid-template-columns: 1fr 1fr 1fr 0.8fr;
    gap: 20px;
  }
  .area-panel-header {
    flex-direction: row;
    align-items: center;
  }
  .area-all-link {
    align-self: center;
  }
  .area-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .feature-card {
    padding: 32px;
  }
  .feature-card::before {
    top: 30px;
    right: 32px;
  }
  .achievement-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .achievement-card {
    padding: 32px 28px 0;
    border-top: 0;
    border-left: 1px solid var(--line);
  }
  .achievement-card:first-child {
    padding-left: 0;
    border-left: 0;
  }
  .achievement-card:last-child {
    padding-right: 0;
  }
  .contact-grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 28px;
  }
  .contact-card {
    padding: 40px;
  }
  .site-footer {
    padding-top: 64px;
  }
}
@media (min-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 359px) {
  .container {
    padding-inline: 18px;
  }
  .hero-title {
    font-size: 30px;
  }
  .header-reservation {
    padding-inline: 10px;
  }
  .brand-logo {
    max-width: 120px;
  }
  .search-panel,
  .area-panel {
    padding-inline: 20px;
  }
  .feature-card,
  .contact-card {
    padding: 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}