/* ============================================================
   NIIGATA TRADING AGENT — Main Stylesheet
   Style: Senior-Friendly / Large Text / High Contrast / Clear
   ベースフォント: 18px（中高年向け標準）
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Base Colors */
  --clr-bg:          #ffffff;
  --clr-bg-2:        #f5f4f1;
  --clr-bg-dark:     #1a2a3a;
  --clr-bg-dark-2:   #111e2b;

  /* Accent */
  --clr-navy:        #1a3558;
  --clr-navy-mid:    #254d80;
  --clr-navy-lt:     #3468a8;
  --clr-gold:        #a07820;
  --clr-gold-lt:     #c49428;

  /* Text — すべて高コントラスト */
  --clr-text:        #111111;
  --clr-text-mid:    #2a2a2a;
  --clr-text-light:  #444444;

  /* UI */
  --clr-border:      #cccccc;
  --clr-border-mid:  #bbbbbb;
  --clr-white:       #ffffff;
  --clr-line:        #06c755;

  /* Fonts */
  --font-main: 'M PLUS 1p', 'Helvetica Neue', Arial, sans-serif;
  --font-en:   'Cormorant Garamond', Georgia, serif;
  --font-num:  'Noto Sans JP', 'M PLUS 1p', sans-serif;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,.10);
  --shadow-md:  0 6px 24px rgba(0,0,0,.13);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.16);

  /* Radii */
  --radius-sm:  8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --trans:      0.25s ease;
  --trans-slow: 0.5s ease;

  --max-w: 1060px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 18px;
  /* ノッチ・セーフエリア対応 */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 2.0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ★ セクション余白を広めに */
.section-wrapper { padding: clamp(4rem, 10vw, 8rem) 0; }
.section-alt      { background: var(--clr-bg-2); }

.pc-only { display: inline; }
.sp-only { display: none; }

/* ---------- Section Headers ---------- */
.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.section-label {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-navy-lt);
  display: block;
  margin-bottom: 0.85rem;
}

.section-title {
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--clr-navy);
  line-height: 1.3;
  margin-bottom: 1.25rem;
}

.section-dark .section-title { color: #ffffff; }

.section-desc {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--clr-text-light);
  line-height: 2.1;
  max-width: 700px;
  margin: 0 auto;
}

.section-dark .section-desc { color: rgba(255,255,255,.88); }

/* ============================================================
   HEADER / NAV
   ============================================================ */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid transparent;
  transition: border-color var(--trans), box-shadow var(--trans);
  /* ノッチ（セーフエリア）対応 */
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}

#site-header.scrolled {
  border-bottom-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  /* nav-containerはpadding-topを持たない（safe-areaはheaderで吸収） */
}

.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.logo-en {
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--clr-navy);
  line-height: 1;
}

.logo-ja {
  display: none;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--clr-text-light);
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.2vw, 1.2rem);
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--clr-text-mid);
  transition: color var(--trans);
  padding: 0.2rem 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: width var(--trans);
}

.nav-links a:hover { color: var(--clr-navy); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--clr-navy) !important;
  color: #ffffff !important;
  padding: 0.45rem 1.1rem !important;
  border-radius: 100px !important;
  font-size: 0.82rem !important;
  transition: background var(--trans), transform var(--trans) !important;
}

.nav-cta:hover {
  background: var(--clr-navy-mid) !important;
  transform: translateY(-1px) !important;
}

.nav-cta::after { display: none !important; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
}

.nav-hamburger span {
  display: block;
  /* ★ ハンバーガーも大きく */
  width: 28px; height: 2.5px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: var(--trans);
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  /* 画像がない場合のフォールバック */
  background: linear-gradient(150deg, #e8f0fa 0%, #f4f7fc 50%, #fffef8 100%);
}

/* 背景写真レイヤー */
.hero-bg-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  /* 写真をほんのり明るく調整 */
  filter: brightness(0.78) saturate(1.1);
  transform: scale(1.03);
  transition: transform 8s ease;
  z-index: 0;
}

#hero:hover .hero-bg-img {
  transform: scale(1.06);
}

/* 写真の上のグラデーションオーバーレイ — テキストを読みやすく */
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      160deg,
      rgba(15, 35, 65, 0.62) 0%,
      rgba(20, 45, 80, 0.45) 50%,
      rgba(10, 25, 50, 0.55) 100%
    );
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  /* 背景画像・オーバーレイより前面に */
  z-index: 2;
  text-align: center;
  padding: 80px var(--gutter) 2rem;
  max-width: 860px;
  animation: heroFadeIn 1s ease forwards;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-en);
  font-size: 1.0rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,.92);
  background: rgba(255,255,255,0.12);
  border: 1.5px solid rgba(255,255,255,0.35);
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.3s forwards;
}

.hero-eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--clr-gold);
  border-radius: 50%;
}

.hero-headline {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #ffffff;
  text-shadow: 0 2px 16px rgba(0,0,0,0.25);
  line-height: 1.25;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.5s forwards;
}

.hero-sub {
  /* ★ サブテキストも大きく */
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 500;
  color: rgba(255,255,255,.9);
  line-height: 2.2;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.7s forwards;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.9s forwards;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  /* ★ バッジも大きく */
  padding: 0.65rem 1.4rem;
  border-radius: 100px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.badge i {
  color: rgba(255,255,255,.85);
  font-size: 1.0rem;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--clr-navy);
  color: #ffffff;
  /* ★ ボタンを大きく・押しやすく */
  padding: 1.1rem 2.8rem;
  border-radius: 100px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 8px 28px rgba(26,53,88,.3);
  transition: background var(--trans), transform var(--trans), box-shadow var(--trans);
  opacity: 0;
  animation: fadeUp 0.7s ease 1.1s forwards;
}

.hero-btn i { font-size: 1.3rem; color: var(--clr-line); }

.hero-btn:hover {
  background: var(--clr-navy-mid);
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(26,53,88,.35);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 1.5s forwards;
  z-index: 2;
}

.hero-scroll-indicator span {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,.7);
  text-transform: uppercase;
}

.scroll-line {
  width: 1px; height: 36px;
  background: linear-gradient(to bottom, var(--clr-navy-lt), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%       { opacity: 0.3; transform: scaleY(0.6); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   BAND
   ============================================================ */
.band-section {
  background: var(--clr-navy);
  /* ★ バンドの余白を広く */
  padding: 1.6rem var(--gutter);
}

.band-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.band-text {
  /* ★ バンドテキストを大きく */
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 500;
  color: #ffffff;
  letter-spacing: 0.1em;
}

/* ============================================================
   ABOUT — STRENGTHS
   ============================================================ */
#about { background: var(--clr-bg); }

.strength-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}

.strength-card {
  background: var(--clr-bg);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-lg);
  /* ★ カード内余白を広く */
  padding: 2.25rem 2rem;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.strength-card:hover {
  border-color: var(--clr-navy-lt);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.strength-icon {
  /* ★ アイコン枠を大きく */
  width: 58px; height: 58px;
  background: linear-gradient(135deg, #e8f0fa, #d0e2f5);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.4rem;
  color: var(--clr-navy);
  font-size: 1.3rem;
}

.strength-card h3 {
  /* ★ カード見出しを大きく */
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-navy);
  margin-bottom: 0.8rem;
  letter-spacing: 0.02em;
}

.strength-card p {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--clr-text-light);
  line-height: 2.0;
}

.license-banner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: linear-gradient(135deg, #e8f0fa, #f4f0e4);
  border: 2px solid rgba(26,53,88,.15);
  border-radius: var(--radius-md);
  /* ★ バナー余白を広く */
  padding: 1.5rem 2rem;
}

.license-banner > i {
  font-size: 2.4rem;
  color: var(--clr-gold);
  flex-shrink: 0;
}

.license-banner strong {
  display: block;
  color: var(--clr-navy);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.license-banner span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--clr-text-light);
}

/* ============================================================
   SERVICES
   ============================================================ */
/* ★ ネイビー濃色背景でカードとの対比をはっきりさせる */
#services {
  background: linear-gradient(160deg, #0f2540 0%, #1a3558 60%, #0f2540 100%);
}

/* セクションヘッダーのラベル・タイトル・説明文を白に */
#services .section-label { color: #c9a84c; }
#services .section-title { color: #ffffff; }
#services .section-desc  { color: rgba(255,255,255,.85); }

.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.service-card {
  /* ★ カードを白にして暗い背景と明確に区別 */
  background: #ffffff;
  border: 2px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.service-card:hover {
  border-color: rgba(255,255,255,.5);
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,.35);
}

.service-card-featured {
  /* ★ おすすめカードはゴールドの枠線で差別化 */
  border-color: #c9a84c;
  border-width: 3px;
  box-shadow: 0 8px 32px rgba(0,0,0,.35);
}

.service-card-featured:hover {
  border-color: #e4c060;
}

.service-card-header {
  /* ★ カードヘッダーをネイビーで統一 → 白本文との対比を明確に */
  padding: 2.25rem 2rem 1.75rem;
  border-bottom: 2px solid #e5e7eb;
  background: linear-gradient(135deg, #1e3f6e 0%, #254d80 100%);
}

.service-card-featured .service-card-header {
  /* ★ おすすめカードはより濃いネイビー */
  background: linear-gradient(135deg, #0f2540 0%, #1a3558 100%);
  border-bottom: 3px solid #c9a84c;
}

.service-tag {
  font-family: var(--font-en);
  font-size: 1.15rem;
  letter-spacing: 0.2em;
  color: #c9a84c;
  display: block;
  margin-bottom: 0.65rem;
  font-weight: 700;
}

.service-card-featured .service-tag { color: #e4c060; }

.service-name {
  font-family: var(--font-en);
  font-size: 2.4rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 0.4rem;
}

.service-card-featured .service-name { color: #ffffff; }

.service-name span {
  font-family: var(--font-main);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  display: block;
  margin-top: 0.25rem;
  color: #ffffff;
}

.service-tagline {
  font-size: 1.25rem;
  font-weight: 500;
  color: rgba(255,255,255,.88);
}

.service-card-featured .service-tagline { color: rgba(255,255,255,.88); }

.service-card-body {
  /* ★ カード本文は白背景・濃いテキスト */
  background: #ffffff;
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.service-lead {
  font-size: 1.1rem;
  font-weight: 400;
  /* ★ 白背景上では濃いグレーで読みやすく */
  color: #444444;
  line-height: 2.1;
}

.service-list {
  display: flex;
  flex-direction: column;
  /* ★ リスト間隔を広く */
  gap: 0.75rem;
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  font-size: 1.1rem;
  font-weight: 400;
  /* ★ 白背景上で濃いテキスト */
  color: #2a2a2a;
  line-height: 1.95;
}

.service-list li i {
  color: #ffffff;
  flex-shrink: 0;
  margin-top: 0.25rem;
  font-size: 0.78rem;
  /* ★ チェックアイコンをネイビー塗りで目立たせる */
  background: var(--clr-navy);
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

.service-list li strong {
  /* ★ 強調テキストをネイビーで視認性アップ */
  color: #1a3558;
  font-weight: 700;
}

.service-merit {
  margin-top: auto;
  /* ★ 「こんな方に」ボックスを淡いネイビー背景で区別 */
  background: #eef4fc;
  border: 1.5px solid #c8d8ee;
  border-left: 5px solid var(--clr-navy);
  padding: 1.1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.featured-merit {
  background: #fdf6e8;
  border-color: #e8cc88;
  border-left-color: #a07820;
}

.service-merit strong {
  display: block;
  /* ★ 「こんな方に」ラベルを大きく・濃く */
  font-size: 1.0rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #1a3558;
  margin-bottom: 0.5rem;
}

.featured-merit strong {
  color: #7a5a10;
}

.service-merit p {
  font-size: 1.05rem;
  font-weight: 400;
  color: #2a3a50;
  line-height: 2.0;
}

.featured-merit p {
  color: #5a4010;
}

/* ============================================================
   PRIVACY COMMITMENT
   ============================================================ */
#privacy-commitment { background: var(--clr-bg); }

.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.privacy-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.privacy-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  /* ★ ステップ間の余白を広く */
  padding: 1.75rem 0;
  border-bottom: 2px solid var(--clr-border);
}

.privacy-step:last-child { border-bottom: none; }

.ps-num {
  font-family: var(--font-num);
  font-size: 4.0rem;
  font-weight: 700;
  color: var(--clr-navy);
  opacity: 0.55;
  line-height: 1;
  flex-shrink: 0;
  width: 4.5rem;
  text-align: right;
  padding-top: 0.1rem;
}

.ps-content h4 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--clr-navy);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.ps-content p {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--clr-text-light);
  line-height: 2.0;
}

.privacy-message-box {
  position: sticky;
  top: 100px;
}

.privacy-message-box blockquote {
  background: linear-gradient(145deg, #1a3558, #254d80);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-lg);
}

.privacy-message-box blockquote p {
  font-size: 1rem;
  font-weight: 400;
  color: #ffffff;
  line-height: 2.2;
  margin-bottom: 1rem;
}

.privacy-message-box blockquote p:last-of-type { margin-bottom: 1.5rem; }

.privacy-message-box blockquote footer {
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,.65);
}

.privacy-note {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  background: #fffbf0;
  border: 2px solid #e8cc88;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.privacy-note i {
  color: var(--clr-gold);
  flex-shrink: 0;
  margin-top: 0.15rem;
  font-size: 1rem;
}

.privacy-note p {
  font-size: 1.05rem;
  font-weight: 400;
  color: #4a3508;
  line-height: 2.0;
}

/* ============================================================
   FLOW
   ============================================================ */
#flow { background: var(--clr-bg-2); }

.flow-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  background: #ffffff;
  border: 2px solid var(--clr-border);
  border-radius: 100px;
  padding: 0.4rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.flow-tab {
  /* ★ タブボタンを大きく */
  padding: 0.85rem 2.5rem;
  border-radius: 100px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font-main);
  color: var(--clr-text-light);
  background: transparent;
  transition: var(--trans);
  letter-spacing: 0.02em;
  /* ★ タップしやすく最小高さを確保 */
  min-height: 56px;
}

.flow-tab.active {
  background: var(--clr-navy);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.flow-tab:hover:not(.active) {
  color: var(--clr-navy);
  background: rgba(26,53,88,.06);
}

.flow-steps {
  max-width: 700px;
  margin: 0 auto;
}

.flow-steps.hidden { display: none; }

.flow-step {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
}

.flow-step-num {
  font-family: var(--font-num);
  font-size: 5.0rem;
  font-weight: 700;
  color: var(--clr-navy);
  opacity: 0.55;
  line-height: 1;
  flex-shrink: 0;
  width: 5.0rem;
}

.flow-step-body {
  background: #ffffff;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  /* 画像がある場合はpaddingをなくして画像を上に */
  padding: 0;
  overflow: hidden;
  flex: 1;
  margin-bottom: 1.1rem;
  transition: border-color var(--trans), box-shadow var(--trans);
}

/* フロー画像 */
.flow-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
  display: block;
  border-bottom: 2px solid var(--clr-border);
}

/* テキスト部分は画像の下にpadding */
.flow-step-body h4,
.flow-step-body p,
.flow-step-body .flow-time {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.flow-step-body h4 { padding-top: 1.25rem; }
.flow-step-body .flow-time { padding-bottom: 1.25rem; display: inline-flex; margin-left: 1.5rem; margin-bottom: 1.25rem; }

.flow-step-body:hover { border-color: var(--clr-navy-lt); }

.flow-step-body h4 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--clr-navy);
  margin-bottom: 0.6rem;
}

.flow-step-body p {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--clr-text-light);
  line-height: 2.0;
  margin-bottom: 0.7rem;
}

.flow-time {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-navy-lt);
  background: #e8f0fa;
  padding: 0.4rem 1.1rem;
  border-radius: 100px;
}

.flow-arrow {
  padding-left: 1.2rem;
  color: var(--clr-border-mid);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

/* ============================================================
   PRICING
   ============================================================ */
#pricing { background: var(--clr-bg); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
  margin-bottom: 2.25rem;
  align-items: start;
}

.pricing-card {
  background: #ffffff;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.pricing-card:hover {
  border-color: var(--clr-navy-lt);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card-featured {
  border-color: var(--clr-navy);
  border-width: 2px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.pricing-card-featured::before {
  content: 'おすすめ';
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  background: var(--clr-gold);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
}

.pricing-card-header {
  padding: 2rem 2rem 1.5rem;
  border-bottom: 2px solid var(--clr-border);
  background: linear-gradient(135deg, #f2f6fc, #ffffff);
}

.pricing-card-featured .pricing-card-header {
  background: linear-gradient(135deg, #1a3558, #254d80);
  border-bottom-color: rgba(255,255,255,.15);
}

.pricing-plan-tag {
  font-family: var(--font-num);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  color: var(--clr-gold);
  display: block;
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.pricing-card-featured .pricing-plan-tag { color: rgba(255,255,255,.65); }

.pricing-card-header h3 {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--clr-navy);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.pricing-card-featured .pricing-card-header h3 { color: #ffffff; }

.pricing-card-header p {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--clr-text-light);
}

.pricing-card-featured .pricing-card-header p { color: rgba(255,255,255,.82); }

.pricing-main-fee {
  padding: 1.75rem 2rem;
  background: #f5f8fd;
  border-bottom: 2px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.pricing-card-featured .pricing-main-fee {
  background: #eaf0f8;
}

.fee-label {
  font-size: 1.1rem;
  color: var(--clr-gold);
  letter-spacing: 0.12em;
  font-family: var(--font-num);
  text-transform: uppercase;
  font-weight: 700;
}

.fee-value {
  font-family: var(--font-num);
  font-size: 1.2rem;
  color: var(--clr-text-mid);
  letter-spacing: 0.02em;
}

.fee-value em {
  font-size: 4.2rem;
  font-style: normal;
  color: var(--clr-navy);
  font-weight: 700;
  margin: 0 0.05em;
}

.fee-value small {
  font-size: 1.2rem;
  color: var(--clr-navy-lt);
}

.fee-note {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--clr-text-light);
}

.pricing-includes {
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  border-bottom: 2px solid var(--clr-border);
}

.pricing-includes li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--clr-text-mid);
}

.pricing-includes li i {
  color: var(--clr-navy);
  font-size: 1.0rem;
  flex-shrink: 0;
}

.pricing-option {
  padding: 1.5rem 2rem;
}

.pricing-option strong {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--clr-gold);
  text-transform: uppercase;
  font-family: var(--font-en);
  margin-bottom: 0.85rem;
  font-weight: 700;
}

.option-table { width: 100%; border-collapse: collapse; }

.option-table td {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--clr-text-mid);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--clr-border);
  line-height: 1.9;
}

.option-table td:last-child {
  text-align: right;
  font-weight: 700;
  color: var(--clr-navy);
  white-space: nowrap;
  padding-left: 0.5rem;
}

.pricing-note-box {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  background: #fffbf0;
  border: 2px solid #e8cc88;
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
}

.pricing-note-box > i {
  color: var(--clr-gold);
  flex-shrink: 0;
  margin-top: 0.2rem;
  font-size: 1.1rem;
}

.pricing-note-box strong {
  display: block;
  font-size: 0.95rem;
  color: #4a3508;
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.pricing-note-box ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.pricing-note-box li {
  font-size: 1.05rem;
  font-weight: 400;
  color: #4a3a18;
  padding-left: 1.1rem;
  position: relative;
  line-height: 2.0;
}

.pricing-note-box li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--clr-gold);
}

/* ============================================================
   CASES
   ============================================================ */
#cases { background: var(--clr-bg-2); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.case-card {
  background: #ffffff;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.case-card:hover {
  border-color: var(--clr-navy-lt);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.case-card-privacy {
  border-color: rgba(26,53,88,.25);
  background: linear-gradient(145deg, #eef4fc, #fff);
}

.case-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, #e8f0fa, #d0e2f5);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-navy);
  font-size: 1.15rem;
  margin-bottom: 1.1rem;
}

.case-tag {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-navy-lt);
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.case-card h4 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--clr-navy);
  margin-bottom: 0.8rem;
  line-height: 1.6;
}

.case-card p {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--clr-text-light);
  line-height: 2.0;
}

/* ============================================================
   FAQ
   ============================================================ */
#faq { background: var(--clr-bg); }

.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 2px solid var(--clr-border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.75rem 0;
  text-align: left;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-text);
  font-family: var(--font-main);
  line-height: 1.75;
  transition: color var(--trans);
  min-height: 72px;
}

.faq-question:hover { color: var(--clr-navy); }

.faq-icon {
  flex-shrink: 0;
  /* ★ アイコンボタンを大きく（タップしやすく） */
  width: 34px; height: 34px;
  background: var(--clr-bg-2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-navy);
  font-size: 0.85rem;
  transition: transform var(--trans), background var(--trans);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--clr-navy);
  color: #ffffff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--trans-slow);
}

.faq-answer p {
  padding: 0.25rem 0 1.75rem;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--clr-text-mid);
  line-height: 2.1;
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact { background: var(--clr-bg-dark); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.light-label { color: rgba(255,255,255,.7) !important; }

.contact-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #ffffff;
  margin-bottom: 1.1rem;
  line-height: 1.4;
}

.contact-desc {
  font-size: 1.2rem;
  font-weight: 400;
  color: rgba(255,255,255,.88);
  line-height: 2.2;
  margin-bottom: 2rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  /* ★ お問い合わせ情報を大きく */
  font-size: 1.15rem;
  font-weight: 400;
  color: rgba(255,255,255,.85);
}

.contact-info-item i {
  color: var(--clr-gold-lt);
  width: 1.1rem;
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  /* ★ ボタン余白を大きく・タップしやすく */
  padding: 1.4rem 2rem;
  border-radius: var(--radius-md);
  transition: transform var(--trans), box-shadow var(--trans), filter var(--trans);
  /* ★ 最小高さを確保 */
  min-height: 72px;
}

.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  filter: brightness(1.06);
}

.contact-btn i { font-size: 2rem; flex-shrink: 0; }
.contact-btn div { flex: 1; }
.contact-btn strong {
  display: block;
  /* ★ ボタンラベルを大きく */
  font-size: 1.2rem;
  font-weight: 700;
}
.contact-btn span {
  display: block;
  font-size: 1.05rem;
  font-weight: 400;
  margin-top: 0.15rem;
  opacity: 0.9;
}

.line-btn {
  background: var(--clr-line);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(6,199,85,.35);
}

.mail-btn {
  background: rgba(255,255,255,.1);
  border: 2px solid rgba(255,255,255,.2);
  color: #ffffff;
}

.mail-btn i { color: var(--clr-gold-lt); }

.contact-note {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1.1rem 1.4rem;
  border: 2px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.06);
}

.contact-note i {
  color: var(--clr-gold-lt);
  flex-shrink: 0;
  font-size: 1rem;
  margin-top: 0.1rem;
}

.contact-note p {
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255,255,255,.88);
  line-height: 2.0;
}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
  background: var(--clr-bg-dark-2);
  border-top: 2px solid rgba(255,255,255,.08);
}

.footer-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem var(--gutter) 2.5rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: start;
}

.footer-logo-en {
  font-family: var(--font-en);
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  color: #ffffff;
  display: block;
  margin-bottom: 0.3rem;
}

.footer-logo-ja {
  font-size: 0.88rem;
  font-weight: 400;
  color: rgba(255,255,255,.7);
  display: block;
  margin-bottom: 1.1rem;
  letter-spacing: 0.06em;
}

.footer-desc {
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255,255,255,.75);
  line-height: 2.0;
}

.footer-links-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,.85);
  text-transform: uppercase;
  font-family: var(--font-en);
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col a {
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255,255,255,.75);
  transition: color var(--trans);
}

.footer-col a:hover { color: #ffffff; }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.4rem var(--gutter);
  border-top: 1px solid rgba(255,255,255,.07);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-license,
.footer-copy {
  font-size: 1.0rem;
  font-weight: 400;
  color: rgba(255,255,255,.65);
  font-family: var(--font-en);
  letter-spacing: 0.06em;
}

/* ============================================================
   PAGE TOP BUTTON
   ============================================================ */
#page-top {
  position: fixed;
  bottom: 2rem; right: 1.75rem;
  /* ★ ページトップボタンを大きく・タップしやすく */
  width: 54px; height: 54px;
  background: var(--clr-navy);
  border-radius: 50%;
  color: #ffffff;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--trans), transform var(--trans), background var(--trans);
  z-index: 900;
  box-shadow: var(--shadow-md);
}

#page-top.visible { opacity: 1; pointer-events: auto; }

#page-top:hover {
  background: var(--clr-navy-mid);
  transform: translateY(-3px);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — TABLET (≤960px)
   ============================================================ */
@media (max-width: 960px) {
  .privacy-grid     { grid-template-columns: 1fr; }
  .contact-grid     { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-container { grid-template-columns: 1fr; gap: 2.5rem; }
  .privacy-message-box { position: static; }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤640px)
   ============================================================ */
@media (max-width: 640px) {
  /* ★ モバイルでもフォントは十分な大きさを確保 */
  html { font-size: 17px; }

  .pc-only { display: none; }
  .sp-only { display: inline; }

  /* Nav */
  .nav-hamburger { display: flex; }

  .nav-links {
    position: fixed;
    /* ヘッダー高さ56px + セーフエリア分を考慮 */
    top: calc(56px + env(safe-area-inset-top, 0px));
    left: 0; right: 0;
    background: rgba(255,255,255,.98);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem var(--gutter) 2rem;
    gap: 0;
    transform: translateY(-110%);
    transition: transform var(--trans);
    border-bottom: 2px solid var(--clr-border);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open { transform: translateY(0); }

  .nav-links li { border-bottom: 1px solid var(--clr-border); }

  .nav-links a {
    display: block;
    /* ★ モバイルメニューのリンクを大きく・タップしやすく */
    padding: 1.1rem 0;
    font-size: 1.05rem;
    color: var(--clr-text-mid);
    min-height: 52px;
  }

  .nav-links a::after { display: none; }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
    padding: 0.85rem !important;
    border-radius: var(--radius-sm) !important;
    font-size: 1rem !important;
  }

  /* Hero */
  .hero-badges { flex-direction: column; align-items: center; }

  /* service-cards はスマホのみ1列（PCは3列固定） */
  .service-cards { grid-template-columns: 1fr; }
  /* その他カード — 1列 */
  .pricing-grid,
  .cases-grid,
  .strength-grid { grid-template-columns: 1fr; }

  /* Footer */
  .footer-links-wrap { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .footer-bottom     { flex-direction: column; text-align: center; }

  /* License banner */
  .license-banner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .footer-links-wrap { grid-template-columns: 1fr; }
  .flow-step { gap: 0.85rem; }
  /* ★ 小画面でもフロー番号を十分大きく保つ */
  .flow-step-num { font-size: 3.2rem; width: 3.5rem; }
  .pricing-card-featured::before { display: none; }

  /* ★ 小さい画面でもボタンをタップしやすく */
  .contact-btn { padding: 1.2rem 1.5rem; }
  .hero-btn    { padding: 1rem 2rem; }
}