@charset "UTF-8";
/* =========================================================
   住まいスクエア / SUMAI SQUARE  ルート（コーポレート）CSS
   Palette: navy #1F3A52 / gold #B5894E / off-white #F6F4F0
   ========================================================= */

/* ---------- デザイントークン ---------- */
:root {
  --color-primary: #1F3A52;
  --color-primary-dark: #16293A;
  --color-accent: #B5894E;
  --color-accent-light: #c9a878;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F6F4F0;
  --color-text: #2B2B2B;
  --color-text-light: #6B6B6B;
  --color-white: #FFFFFF;
  --color-border: #E4E1DB;

  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-latin: "Cormorant Garamond", "Times New Roman", serif;

  --header-height: 80px;
  --container: 1120px;
  --radius: 6px;
  --transition: 0.3s ease;
}

/* ---------- リセット ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition), opacity var(--transition); }
ul { list-style: none; }

/* ---------- 共通レイアウト ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: clamp(64px, 9vw, 120px) 0; }
.section-alt { background: var(--color-bg-soft); }

.section-head { text-align: center; margin-bottom: clamp(40px, 6vw, 64px); }
.section-label {
  display: block;
  font-family: var(--font-latin);
  font-size: 0.95rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  color: var(--color-primary-dark);
  line-height: 1.4;
  letter-spacing: 0.04em;
}
.section-lead {
  margin-top: 18px;
  color: var(--color-text-light);
  font-size: 0.98rem;
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: var(--radius);
  font-size: 0.97rem;
  font-weight: 500;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}
.btn::after { content: "→"; font-size: 0.9em; transition: transform var(--transition); }
.btn:hover::after { transform: translateX(4px); }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-light { background: #fff; color: var(--color-primary-dark); border-color: #fff; }
.btn-light:hover { background: transparent; color: #fff; border-color: #fff; }
.btn-small { padding: 10px 22px; font-size: 0.85rem; }

/* テキストリンク（ゴールド下線/矢印） */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--color-primary-dark);
}
.link-arrow::after { content: "→"; color: var(--color-accent); transition: transform var(--transition); }
.link-arrow:hover { color: var(--color-accent); }
.link-arrow:hover::after { transform: translateX(4px); }

/* =========================================================
   ヘッダー
   ========================================================= */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.07); }
.header-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo a { display: flex; flex-direction: column; line-height: 1.15; }
.logo-main {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: var(--color-primary-dark);
}
.logo-sub {
  font-family: var(--font-latin);
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.nav-list { display: flex; gap: 32px; }
.nav-list a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}
.nav-list a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--color-accent);
  transition: width var(--transition);
}
.nav-list a:hover { color: var(--color-accent); }
.nav-list a:hover::after { width: 100%; }
.header-contact { display: flex; align-items: center; }

/* ハンバーガー */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 6px;
  width: 38px; height: 38px; padding: 5px;
  background: none; border: none; cursor: pointer;
}
.hamburger span { display: block; width: 100%; height: 2px; background: var(--color-primary-dark); transition: all var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

.mobile-menu {
  display: none;
  position: fixed; top: var(--header-height); left: 0; width: 100%;
  background: #fff; border-bottom: 1px solid var(--color-border);
  padding: 24px; z-index: 999; box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.mobile-menu.active { display: block; }
.mobile-menu li { border-bottom: 1px solid var(--color-border); }
.mobile-menu li a { display: block; padding: 14px 4px; font-weight: 500; }
.mobile-menu .btn { width: 100%; margin-top: 18px; }

/* =========================================================
   ヒーロー
   ========================================================= */
.hero { position: relative; height: clamp(560px, 88vh, 880px); overflow: hidden; }
.hero-slider, .hero-slide { position: absolute; inset: 0; }
.hero-slide {
  opacity: 0;
  transition: opacity 1.2s ease;
  background-size: cover;
  background-position: center;
  background-color: var(--color-primary-dark); /* 画像未配置時のフォールバック */
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,41,58,0.15) 0%, rgba(22,41,58,0.10) 40%, rgba(22,41,58,0.55) 100%);
}
/* 写真があれば表示、無ければ単色フォールバック（::after で暗幕） */
.hero-slide.s1 { background-color: #24405b; background-image: url("assets/img/hero/01.jpg"); }
.hero-slide.s2 { background-color: #2b4a4a; background-image: url("assets/img/hero/02.jpg"); }
.hero-slide.s3 { background-color: #463827; background-image: url("assets/img/hero/03.jpg"); }

.hero-copy {
  position: absolute; left: 0; bottom: 0; z-index: 2;
  width: 100%; max-width: var(--container);
  left: 50%; transform: translateX(-50%);
  padding: 0 24px clamp(56px, 9vh, 110px);
  color: #fff;
}
.hero-copy .en {
  font-family: var(--font-latin);
  letter-spacing: 0.3em; text-transform: uppercase;
  font-size: 0.9rem; opacity: 0.9; margin-bottom: 18px;
}
.hero-copy h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.9rem, 5.2vw, 3.4rem);
  line-height: 1.45;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 18px rgba(0,0,0,0.25);
}
.hero-copy p { margin-top: 18px; font-size: 1rem; opacity: 0.92; max-width: 40em; }
.hero-scroll {
  position: absolute; right: 28px; bottom: 28px; z-index: 2;
  color: #fff; font-family: var(--font-latin); font-size: 0.75rem;
  letter-spacing: 0.25em; writing-mode: vertical-rl;
  display: flex; align-items: center; gap: 12px;
}
.hero-scroll::after { content: ""; width: 1px; height: 48px; background: rgba(255,255,255,0.7); animation: scrollline 1.8s ease-in-out infinite; }
@keyframes scrollline { 0%,100%{ transform: scaleY(0.3); transform-origin: top; } 50%{ transform: scaleY(1); transform-origin: top; } }
.hero-dots { position: absolute; left: 50%; transform: translateX(-50%); bottom: 20px; z-index: 3; display: flex; gap: 10px; }
.hero-dots button { width: 9px; height: 9px; border-radius: 50%; border: none; background: rgba(255,255,255,0.45); cursor: pointer; transition: background var(--transition); }
.hero-dots button.active { background: #fff; }

/* =========================================================
   ニュースバー
   ========================================================= */
.news-bar { background: var(--color-primary-dark); color: #fff; }
.news-bar-inner { display: flex; align-items: center; gap: 24px; padding: 16px 24px; max-width: var(--container); margin: 0 auto; }
.news-bar-label { font-family: var(--font-latin); letter-spacing: 0.2em; font-size: 0.8rem; color: var(--color-accent-light); flex-shrink: 0; }
.news-bar-list { overflow: hidden; }
.news-bar-list a { display: inline-flex; gap: 16px; align-items: baseline; font-size: 0.9rem; opacity: 0.92; }
.news-bar-list .date { color: var(--color-accent-light); font-family: var(--font-latin); letter-spacing: 0.05em; }
.news-bar-list a:hover { opacity: 1; color: var(--color-accent-light); }

/* =========================================================
   About
   ========================================================= */
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.about-copy .section-label { text-align: left; }
.about-copy h2 {
  font-family: var(--font-serif); font-weight: 700;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem); line-height: 1.6;
  color: var(--color-primary-dark); letter-spacing: 0.04em; margin-bottom: 24px;
}
.about-copy p { color: var(--color-text-light); margin-bottom: 16px; }
.about-visual { position: relative; aspect-ratio: 4/3; border-radius: 4px; overflow: hidden;
  background-color: #24405b; background-image: url("assets/img/about.jpg"); background-size: cover; background-position: center; }
.about-visual::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,0.25); margin: 14px; pointer-events: none; }

/* =========================================================
   運営メディア（3カラムカード）
   ========================================================= */
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.media-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: 4px;
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.media-card:hover { transform: translateY(-6px); box-shadow: 0 16px 36px rgba(22,41,58,0.12); }
.media-card__img { aspect-ratio: 3/2; background-size: cover; background-position: center; overflow: hidden; background-color: #24405b; }
.media-card__img.m1 { background-color: #24405b; background-image: url("assets/img/media/chumon.jpg"); }
.media-card__img.m2 { background-color: #2f5a4c; background-image: url("assets/img/media/exterior.jpg"); }
.media-card__img.m3 { background-color: #6b4f2e; background-image: url("assets/img/media/reform.jpg"); }
.media-card__body { padding: 26px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.media-card__label { font-family: var(--font-latin); letter-spacing: 0.2em; text-transform: uppercase; font-size: 0.78rem; color: var(--color-accent); margin-bottom: 8px; }
.media-card__title { font-family: var(--font-serif); font-weight: 700; font-size: 1.25rem; color: var(--color-primary-dark); margin-bottom: 12px; }
.media-card__desc { font-size: 0.9rem; color: var(--color-text-light); flex: 1; margin-bottom: 18px; }
.media-card__foot { margin-top: auto; }

/* =========================================================
   選ばれる理由
   ========================================================= */
.strength-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.strength-item { text-align: center; padding: 8px; }
.strength-num { font-family: var(--font-latin); font-size: 2.4rem; color: var(--color-accent); line-height: 1; margin-bottom: 14px; }
.strength-item h3 { font-family: var(--font-serif); font-weight: 700; font-size: 1.2rem; color: var(--color-primary-dark); margin-bottom: 12px; }
.strength-item p { font-size: 0.92rem; color: var(--color-text-light); }

/* =========================================================
   ご利用の流れ
   ========================================================= */
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.flow-step { position: relative; background: #fff; border: 1px solid var(--color-border); border-radius: 4px; padding: 32px 22px 26px; }
.flow-step::before {
  counter-increment: step; content: "STEP " counter(step);
  font-family: var(--font-latin); letter-spacing: 0.15em; font-size: 0.72rem;
  color: var(--color-accent); display: block; margin-bottom: 12px;
}
.flow-step h3 { font-family: var(--font-serif); font-weight: 700; font-size: 1.1rem; color: var(--color-primary-dark); margin-bottom: 10px; }
.flow-step p { font-size: 0.88rem; color: var(--color-text-light); }
.flow-step:not(:last-child)::after {
  content: "→"; position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
  color: var(--color-accent); font-size: 1.1rem; z-index: 1;
}

/* =========================================================
   CTAバンド
   ========================================================= */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff; text-align: center; padding: clamp(56px, 8vw, 88px) 0;
}
.cta-band h2 { font-family: var(--font-serif); font-weight: 700; font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 14px; letter-spacing: 0.04em; }
.cta-band p { opacity: 0.9; margin-bottom: 28px; }

/* =========================================================
   お問い合わせフォーム
   ========================================================= */
.contact-wrap { max-width: 720px; margin: 0 auto; }
.contact-form { display: grid; gap: 22px; }
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 0.9rem; font-weight: 500; color: var(--color-primary-dark); }
.form-row label .req { color: #c0392b; font-size: 0.78rem; margin-left: 6px; }
.form-row input, .form-row select, .form-row textarea {
  font-family: var(--font-sans); font-size: 1rem; color: var(--color-text);
  padding: 13px 16px; border: 1px solid var(--color-border); border-radius: var(--radius);
  background: #fff; transition: border-color var(--transition), box-shadow var(--transition);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(31,58,82,0.10);
}
.form-submit { text-align: center; margin-top: 8px; }
.form-note { font-size: 0.82rem; color: var(--color-text-light); text-align: center; margin-top: 14px; }
.grecaptcha-badge { visibility: hidden; }

/* =========================================================
   フッター
   ========================================================= */
.footer { background: var(--color-primary-dark); color: rgba(255,255,255,0.8); padding: clamp(48px,7vw,72px) 0 0; }
.footer-inner { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; padding-bottom: 44px; }
.footer-logo .logo-main { color: #fff; font-size: 1.7rem; }
.footer-logo .logo-sub { color: rgba(255,255,255,0.5); }
.footer-desc { margin-top: 12px; font-size: 0.88rem; opacity: 0.75; }
.footer-nav { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 28px; }
.footer-nav h4 { font-size: 0.85rem; font-weight: 700; color: #fff; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.15); }
.footer-nav li { margin-bottom: 9px; font-size: 0.88rem; }
.footer-nav a { color: rgba(255,255,255,0.8); }
.footer-nav a:hover { color: var(--color-accent-light); }
.footer-media-links { display: grid; grid-template-columns: 1fr; gap: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 18px 0; text-align: center; font-size: 0.78rem; opacity: 0.6; }

/* ページトップ */
.back-to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 6px 18px rgba(22,41,58,0.25);
}
.back-to-top.show { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-3px); }

/* =========================================================
   レスポンシブ
   ========================================================= */
@media (max-width: 1024px) {
  .nav, .header-contact { display: none; }
  .hamburger { display: flex; }
  .media-grid, .strength-grid { grid-template-columns: 1fr 1fr; }
  .flow-steps { grid-template-columns: 1fr 1fr; gap: 28px; }
  .flow-step:not(:last-child)::after { display: none; }
}
@media (max-width: 768px) {
  :root { --header-height: 64px; }
  .about-inner { grid-template-columns: 1fr; }
  .media-grid, .strength-grid, .flow-steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
  .footer-nav { grid-template-columns: 1fr 1fr; gap: 24px; }
  .hero-copy { padding-bottom: 72px; }
}