/* =========================================
   NFC-TS サイト スタイルシート
   ========================================= */

/* --- CSS変数 --- */
:root {
  /* 谷口松雄堂ブランドカラー（スレートネイビー＋オレンジ） */
  --color-primary: #2F4A5B;
  --color-primary-dark: #233A48;
  --color-primary-light: #4D7286;
  --color-accent: #E35329;
  --color-accent-light: #ED8A63;
  --color-dark: #1C2E37;
  --color-dark-2: #233A46;
  --color-dark-3: #2F4A5B;
  --color-gray: #F4F5F3;
  --color-gray-2: #E3E5E2;
  --color-gray-3: #9CA3A0;
  --color-text: #333333;
  --color-text-light: #757B80;
  --color-white: #FFFFFF;
  --gradient-primary: linear-gradient(135deg, #2F4A5B 0%, #4D7286 100%);
  --gradient-accent: linear-gradient(135deg, #E35329 0%, #ED8A63 100%);
  --gradient-dark: linear-gradient(135deg, #1C2E37 0%, #2F4A5B 100%);
  --shadow-sm: 0 2px 8px rgba(47, 74, 91, 0.08);
  --shadow-md: 0 8px 30px rgba(47, 74, 91, 0.14);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
  --border-accent: 5px solid var(--color-primary);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --transition: all 0.3s ease;
}

/* --- リセット・ベース --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* --- ユーティリティ --- */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section { padding: 60px 0; }
.section--dark { background: var(--color-dark-2); color: var(--color-white); }
.section--gray { background: var(--color-gray); }
.section__label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
  padding-left: 23px;
  opacity: 0.8;
}
.section--dark .section__label { color: var(--color-accent); }
.section__title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
  border-left: var(--border-accent);
  padding-left: 18px;
  color: var(--color-text);
}
.section--dark .section__title {
  border-left-color: var(--color-accent);
  color: var(--color-white);
}
.section__desc {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 600px;
  margin-bottom: 30px;
  padding-left: 23px;
  line-height: 1.8;
}
.section--dark .section__desc { color: #9CA3AF; }
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-sm { font-size: 13px; }
.link { color: var(--color-primary); text-decoration: underline; }

/* --- ボタン --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}
.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(47, 74, 91, 0.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(47, 74, 91, 0.45);
}
.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}
.btn--sm { padding: 10px 22px; font-size: 14px; }
.btn--lg { padding: 18px 40px; font-size: 16px; }
.btn--xl { padding: 20px 56px; font-size: 18px; }
.btn--full { width: 100%; }
.btn--outline { background: transparent; border: 2px solid var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: var(--color-white); }
.btn--solid { background: var(--color-primary); color: var(--color-white); border: 2px solid var(--color-primary); }
.btn--solid:hover { opacity: 0.9; }

/* =========================================
   ヘッダー
   ========================================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 8px 0;
  background: #fff;
  border-bottom: 1px solid var(--color-gray-2);
  transition: var(--transition);
}
.header.scrolled {
  padding: 4px 0;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.header__logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
}
.header__brand-logo { height: 42px; width: auto; display: block; }
.header__divider { width: 1px; height: 30px; background: var(--color-gray-2); flex-shrink: 0; }
.header__product { display: inline-flex; letter-spacing: 0.02em; }
.logo-nfc { color: var(--color-text); }
.logo-ts { color: var(--color-accent); }
.nav__list {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav__sep {
  width: 1px;
  height: 18px;
  background: var(--color-gray-2);
  margin: 0 2px;
}
.nav__list a {
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  position: relative;
}
.nav__list a:not(.btn):hover { color: var(--color-primary); }
.nav__list a.btn--primary,
.nav__list a.btn--primary:hover { color: var(--color-white); }
.nav__list a.active:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================
   ヒーロー
   ========================================= */
.hero {
  position: relative;
  background: #EFCDB6;
  padding: 70px 20px 22px;
  overflow: hidden;
}
.hero__bg { display: none; }
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  background: #F8F2E6;
  background-image: radial-gradient(rgba(47,74,91,0.045) 1px, transparent 1px);
  background-size: 18px 18px;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 20px;
  padding: 36px 48px;
  box-shadow: 0 10px 36px rgba(120,80,50,0.12);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}
.hero__col--title { text-align: right; }
.hero__col--title .hero__title { margin-bottom: 0; }
.hero__anniv {
  display: block;
  width: clamp(140px, 18vw, 184px);
  height: auto;
  margin-bottom: 20px;
}
.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(227,83,41,0.1);
  border: 1px solid rgba(227,83,41,0.45);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 18px;
}
.hero__title {
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 20px;
}
.hero__sub {
  font-size: clamp(15px, 1.7vw, 18px);
  color: var(--color-text-light);
  margin-bottom: 30px;
  line-height: 1.75;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 0;
}
.hero .btn--ghost {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.hero .btn--ghost:hover {
  background: rgba(47,74,91,0.08);
  border-color: var(--color-primary);
}
.hero__stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat__num {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
}
.stat__label { font-size: 13px; color: var(--color-text-light); }
.stat__divider { width: 1px; height: 40px; background: var(--color-gray-2); }
.hero__scroll {
  display: none;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
}

/* =========================================
   課題セクション
   ========================================= */
.problem { background: var(--color-white); }
.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.problem__card {
  padding: 32px;
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.problem__card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}
.problem__icon { font-size: 36px; margin-bottom: 16px; }
.problem__card p { font-size: 15px; color: var(--color-text-light); line-height: 1.7; }
.problem__card strong { color: var(--color-text); }
.problem__arrow { text-align: center; }
.arrow-down {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  padding: 16px 32px;
  background: rgba(47,74,91,0.06);
  border-radius: 50px;
  border: 2px dashed rgba(47,74,91,0.3);
}
.arrow-down::before { content: '▼'; }

/* =========================================
   特徴セクション
   ========================================= */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  padding: 40px 32px;
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.feature-card:hover::before { opacity: 1; }
.feature-card--accent {
  background: linear-gradient(135deg, #EEF2F4 0%, #DCE5EA 100%);
  border-color: rgba(47,74,91,0.25);
}
.feature-card__num {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.feature-card__icon { font-size: 40px; margin-bottom: 16px; color: var(--color-primary); line-height: 1; }
.feature-card__icon svg { width: 42px; height: 42px; vertical-align: middle; }
.feature-card--accent .feature-card__icon { color: var(--color-accent); }
.feature-card__title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.feature-card__text { font-size: 14px; color: var(--color-text-light); line-height: 1.8; }
.features__more { text-align: center; margin-top: 36px; }

/* Lite：対応商品 & スマホ画面ウォークスルー（画面はダミー差し替え前提） */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 960px; margin: 0 auto; }
.product-card { background: #fff; border: 1px solid var(--color-gray-2); border-radius: 14px; overflow: hidden; box-shadow: 0 4px 14px rgba(0,0,0,0.05); }
.product-card__img { aspect-ratio: 4 / 5; background: #F1ECE3; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; color: var(--color-text-light); font-size: 13px; font-weight: 700; overflow: hidden; }
.product-card__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-gallery-wrap { margin-top: 30px; }
.product-gallery-label { font-size: 14px; font-weight: 700; color: var(--color-text); margin-bottom: 12px; }
.product-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; max-width: 720px; margin: 0 auto; }
.product-gallery img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 8px; border: 1px solid var(--color-gray-2); display: block; }
.product-card__img small { font-size: 11px; font-weight: 500; opacity: 0.75; }
.product-card__body { padding: 20px; }
.product-card__badge { display: inline-block; font-size: 11px; font-weight: 700; color: var(--color-accent); background: rgba(227,83,41,0.1); padding: 3px 11px; border-radius: 50px; margin-bottom: 10px; }
.product-card__name { font-size: 17px; font-weight: 700; color: var(--color-text); margin-bottom: 8px; }
.product-card__text { font-size: 13.5px; color: var(--color-text-light); line-height: 1.8; }

.walkthrough__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; max-width: 960px; margin: 8px auto 0; }
.walk-step { text-align: center; }
.phone-mock { width: 190px; max-width: 78%; margin: 0 auto 16px; aspect-ratio: 9 / 19; background: #fff; border: 8px solid var(--color-primary); border-radius: 26px; overflow: hidden; box-shadow: 0 8px 22px rgba(0,0,0,0.12); }
.phone-mock img { width: 100%; height: 100%; object-fit: cover; display: block; }
.phone-mock__ph { width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; background: #F1ECE3; color: var(--color-text-light); font-size: 13px; font-weight: 700; text-align: center; line-height: 1.5; }
.phone-mock__ph small { font-size: 11px; font-weight: 500; opacity: 0.75; }
.walk-step__num { display: inline-block; font-family: var(--font-en); font-weight: 700; color: var(--color-accent); font-size: 13px; letter-spacing: 0.08em; margin-bottom: 6px; }
.walk-step__title { font-size: 17px; font-weight: 700; color: var(--color-text); margin-bottom: 8px; }
.walk-step__text { font-size: 13.5px; color: var(--color-text-light); line-height: 1.85; }
@media (max-width: 760px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); max-width: 600px; }
  .walkthrough__grid { grid-template-columns: repeat(2, 1fr); max-width: 560px; }
}
@media (max-width: 600px) {
  .product-grid { grid-template-columns: 1fr; max-width: 360px; }
  .product-gallery { grid-template-columns: repeat(2, 1fr); }
}

/* =========================================
   想い・企業理念（ブランドストーリー）
   ========================================= */
.story { background: #F7F3EA; }
.story__inner { max-width: 760px; margin: 0 auto; }
.story__tagline {
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  line-height: 1.5;
  margin-bottom: 10px;
}
.story__title {
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.6;
  letter-spacing: 0.04em;
  padding-left: 1em;
  margin-bottom: 28px;
}
.story__body p {
  font-size: 16px;
  line-height: 2.15;
  color: var(--color-text);
  margin-bottom: 22px;
}
.story__body p:last-child { margin-bottom: 0; }

/* =========================================
   ご案内（各ページ誘導）
   ========================================= */
.guide__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.guide-card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}
.guide-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.guide-card__icon { font-size: 36px; margin-bottom: 14px; }
.guide-card__title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--color-text);
}
.guide-card__text {
  font-size: 13.5px;
  color: var(--color-text-light);
  line-height: 1.8;
  flex-grow: 1;
  margin-bottom: 16px;
}
.guide-card__link {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
}

/* =========================================
   2つのシステム（Lite / Business）比較
   ========================================= */
.systems__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.system-card {
  display: flex;
  flex-direction: column;
  padding: 36px 32px;
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  background: var(--color-white);
  transition: var(--transition);
}
.system-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.system-card--lite { border-top: 5px solid var(--color-accent); }
.system-card--biz { border-top: 5px solid var(--color-primary); }
.system-card__badge {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.system-card--lite .system-card__badge { background: rgba(227,83,41,0.1); color: var(--color-accent); }
.system-card--biz .system-card__badge { background: rgba(47,74,91,0.1); color: var(--color-primary); }
.system-card__name {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}
.system-card__name span { color: var(--color-primary); }
.system-card--lite .system-card__name span { color: var(--color-accent); }
.system-card__who { font-size: 13px; color: var(--color-text); background: rgba(0,0,0,0.035); border-radius: 6px; padding: 9px 13px; margin-bottom: 14px; line-height: 1.7; }
.system-card__who strong { color: var(--color-primary); margin-right: 4px; }
.system-card--lite .system-card__who strong { color: var(--color-accent); }
.system-card__desc { font-size: 14px; color: var(--color-text-light); line-height: 1.9; margin-bottom: 18px; }
.system-card__list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.system-card__list li { position: relative; padding-left: 24px; font-size: 14px; color: var(--color-text); }
.system-card__list li::before { content: '✓'; position: absolute; left: 0; font-weight: 700; color: var(--color-primary); }
.system-card--lite .system-card__list li::before { color: var(--color-accent); }
.system-card .btn { margin-top: auto; }
@media (max-width: 760px) { .systems__grid { grid-template-columns: 1fr; } }

/* =========================================
   活用シーン
   ========================================= */
.usecases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}
.usecase-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}
.usecase-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.usecase-card__img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 72px;
}
.usecase-card__img--bridal { background: linear-gradient(135deg, #ede9ff 0%, #c4b5fd 100%); }
.usecase-card__img--gift { background: linear-gradient(135deg, #fff0f6 0%, #fbb6ce 100%); }
.usecase-card__img--b2b { background: linear-gradient(135deg, #DCE5EA 0%, #93c5fd 100%); }
.usecase-card__img--personal { background: linear-gradient(135deg, #FBE9DD 0%, #F0A988 100%); }
.usecase-card__body { padding: 32px; }
.usecase-card__body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}
.usecase-card__body p { font-size: 14px; color: var(--color-text-light); margin-bottom: 20px; line-height: 1.8; }
.usecase-card__body ul { display: flex; flex-wrap: wrap; gap: 8px; }
.usecase-card__body li {
  padding: 4px 14px;
  background: rgba(47, 74, 91, 0.07);
  border: 1px solid rgba(47, 74, 91, 0.2);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
}

/* =========================================
   NFC-TSの組み込み方（注文方法）
   ========================================= */
.implement__premise {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px 32px;
  background: var(--color-gray);
  border-left: var(--border-accent);
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}
.implement__premise-icon { font-size: 40px; line-height: 1; flex-shrink: 0; }
.implement__premise strong {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 6px;
}
.implement__premise p { font-size: 14px; color: var(--color-text-light); line-height: 1.8; }
.implement__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.implement-card {
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.implement-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.implement-card__num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: 14px;
}
.implement-card__icon { font-size: 40px; margin-bottom: 14px; }
.implement-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}
.implement-card__text {
  font-size: 13.5px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 18px;
  flex-grow: 1;
}
.implement-card__tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(47,74,91,0.08);
  padding: 6px 14px;
  border-radius: 50px;
}
.implement__note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--color-text-light);
  text-align: center;
}

/* =========================================
   導入の流れ
   ========================================= */
.flow__steps {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}
.flow__step {
  flex: 1;
  min-width: 240px;
  padding: 40px 32px;
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.flow__step:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.flow__step-num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.flow__step-icon { font-size: 48px; margin-bottom: 16px; }
.flow__step-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.flow__step-text { font-size: 14px; color: var(--color-text-light); line-height: 1.8; }
.flow__arrow {
  font-size: 32px;
  color: var(--color-primary);
  flex-shrink: 0;
  padding-top: 80px;
  font-weight: 300;
}

/* =========================================
   料金
   ========================================= */
.pricing__table-wrap { overflow-x: auto; margin-bottom: 24px; }
.pricing__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 520px;
}
.pricing__table th, .pricing__table td {
  padding: 16px 24px;
  text-align: center;
  border-bottom: 1px solid var(--color-gray-2);
}
.pricing__table th {
  background: var(--color-primary-dark);
  color: var(--color-white);
  font-weight: 700;
  font-size: 14px;
}
/* =========================================
   アコーディオン（NFC解説ページの各セクション）
   ========================================= */
.section.acc { padding: 40px 0; }
.acc .acc__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  user-select: none;
}
.acc .acc__head .section__title { margin-bottom: 0; }
.acc__lead {
  margin-top: 8px;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-light);
}
.acc__btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  background: transparent;
  border: 1.5px solid var(--color-primary);
  padding: 9px 20px;
  border-radius: 50px;
  white-space: nowrap;
  transition: var(--transition);
}
.acc__head:hover .acc__btn { background: var(--color-primary); color: #fff; }
.acc__icon { font-size: 16px; line-height: 1; }
.acc__body { display: none; padding-top: 28px; }
.acc.is-open .acc__body { display: block; }
.acc.is-open .acc__btn { color: var(--color-accent); border-color: var(--color-accent); }
.acc.is-open .acc__head:hover .acc__btn { background: var(--color-accent); color: #fff; }
@media (max-width: 600px) {
  .acc .acc__head { flex-direction: column; align-items: flex-start; gap: 14px; }
}

.pricing__table--nowrap2 th:nth-child(1),
.pricing__table--nowrap2 td:nth-child(1),
.pricing__table--nowrap2 th:nth-child(2),
.pricing__table--nowrap2 td:nth-child(2) { white-space: nowrap; }
.pricing__table th:first-child { text-align: left; border-radius: 8px 0 0 0; }
.pricing__table th:last-child { border-radius: 0 8px 0 0; }
.pricing__table td:first-child { text-align: left; font-weight: 600; }
.pricing__table tr:hover td { background: var(--color-gray); }
.pricing__note { font-size: 13px; color: var(--color-text-light); margin-bottom: 40px; line-height: 1.8; }
.pricing__cta { text-align: center; }

/* =========================================
   CTA セクション
   ========================================= */
.cta-section {
  position: relative;
  padding: 64px 0;
  text-align: center;
  overflow: hidden;
  background: var(--color-dark);
}
.cta-section__bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(47,74,91,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47,74,91,0.08) 1px, transparent 1px);
  background-size: 60px 60px;
}
.cta-section__inner { position: relative; z-index: 1; }
.cta-section__title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 20px;
  line-height: 1.4;
}
.cta-section__text {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 40px;
}

/* =========================================
   フッター
   ========================================= */
.footer {
  background: #06080F;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  flex-wrap: wrap;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer__logo {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  display: inline-block;
}
.footer__logo .logo-nfc { color: var(--color-white); }
.footer__logo .logo-ts { color: var(--color-accent); }
.footer__tagline { font-size: 14px; margin-bottom: 8px; }
.footer__company { font-size: 13px; color: rgba(255,255,255,0.5); }
.footer__anniv { display: block; width: 124px; height: auto; margin-top: 18px; opacity: 0.92; }
.footer__nav ul { display: flex; flex-wrap: wrap; gap: 16px 32px; }
.footer__nav a { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer__nav a:hover { color: var(--color-white); }
.footer__bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* =========================================
   ページヘッダー（共通）
   ========================================= */
.page-hero {
  position: relative;
  padding: 104px 0 44px;
  background: #F8F2E6;
  border-bottom: 3px solid var(--color-accent);
  overflow: hidden;
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(47,74,91,0.05) 1px, transparent 1px);
  background-size: 18px 18px;
}
.page-hero__inner { position: relative; z-index: 1; }
.page-hero__title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.page-hero__sub { font-size: 16px; color: var(--color-text-light); }

/* =========================================
   事例ページ
   ========================================= */
.cases { }
.cases__filter {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  border: 2px solid var(--color-gray-2);
  color: var(--color-text-light);
  background: var(--color-white);
  transition: var(--transition);
  cursor: pointer;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}
.cases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 32px;
}
.case-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}
.case-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.case-card__tag {
  position: absolute;
  top: 16px; left: 16px;
  padding: 4px 12px;
  background: rgba(47,74,91,0.9);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: 50px;
  z-index: 1;
}
.case-card__img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
}
.case-card__img--bridal { background: linear-gradient(135deg, #f0e6ff 0%, #c4b5fd 100%); }
.case-card__img--bridal2 { background: linear-gradient(135deg, #fce7f3 0%, #f9a8d4 100%); }
.case-card__img--gift { background: linear-gradient(135deg, #fef3c7 0%, #fcd34d 100%); }
.case-card__img--product { background: linear-gradient(135deg, #d1fae5 0%, #6ee7b7 100%); }
.case-card__img--card { background: linear-gradient(135deg, #DCE5EA 0%, #93c5fd 100%); }
.case-card__img--event { background: linear-gradient(135deg, #fee2e2 0%, #fca5a5 100%); }
.case-card__body { padding: 28px; }
.case-card__title { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.case-card__client { font-size: 13px; color: var(--color-text-light); margin-bottom: 14px; }
.case-card__text { font-size: 14px; color: var(--color-text-light); margin-bottom: 20px; line-height: 1.8; }
.case-card__results { padding: 0; }
.case-card__results li {
  font-size: 13px;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 1px solid var(--color-gray-2);
  padding-left: 16px;
  position: relative;
}
.case-card__results li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}
.case-card__results li:last-child { border-bottom: none; }
.case-card__results strong { color: var(--color-primary); }

/* 非表示カード（フィルター用） */
.case-card.hidden {
  display: none;
}

/* =========================================
   お問い合わせページ
   ========================================= */
.contact__wrap {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: flex-start;
}
.contact__title { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.contact__desc { color: var(--color-text-light); margin-bottom: 40px; line-height: 1.8; }

.form-group { margin-bottom: 24px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}
.required {
  display: inline-block;
  font-size: 11px;
  background: #EF4444;
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-white);
  transition: var(--transition);
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(47,74,91,0.1);
}
.form-textarea { resize: vertical; min-height: 160px; }
.form-checkboxes { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--color-primary); }
.checkbox-label--lg { font-size: 15px; margin-bottom: 4px; }
.form-message {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  display: none;
}
.form-message.success {
  display: block;
  background: #D1FAE5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}
.form-message.error {
  display: block;
  background: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FECACA;
}
.contact__info-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}
.contact__info-title { font-size: 22px; font-weight: 700; margin-bottom: 24px; }
.contact__info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.8;
}
.contact__info-icon { font-size: 24px; flex-shrink: 0; }
.contact__flow-card {
  background: linear-gradient(135deg, #EEF2F4 0%, #DCE5EA 100%);
  border: 2px solid rgba(47,74,91,0.15);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact__flow-title { font-size: 18px; font-weight: 700; margin-bottom: 24px; color: var(--color-primary); }
.contact__flow-list { display: flex; flex-direction: column; gap: 20px; }
.contact__flow-list li { display: flex; gap: 16px; align-items: flex-start; }
.flow-num {
  width: 32px; height: 32px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-en);
  flex-shrink: 0;
}
.contact__flow-list strong { font-size: 15px; display: block; margin-bottom: 4px; }
.contact__flow-list p { font-size: 13px; color: var(--color-text-light); }
.privacy-policy {
  margin-top: 64px;
  padding: 32px;
  background: var(--color-gray);
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-light);
}
.privacy-policy h3 { font-size: 16px; font-weight: 700; margin-bottom: 12px; color: var(--color-text); }
.privacy-policy ul { margin: 12px 0 12px 20px; list-style: disc; }
.privacy-policy p { margin-bottom: 8px; }

/* =========================================
   アニメーション
   ========================================= */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* =========================================
   レスポンシブ
   ========================================= */
@media (max-width: 900px) {
  .header__nav { display: none; }
  .header__nav.open {
    display: flex;
    position: fixed;
    top: 60px; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
  }
  .header__nav.open .nav__list {
    flex-direction: column;
    align-items: center;
    gap: 0;
    width: 100%;
  }
  .header__nav.open .nav__list li {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.08);
  }
  .header__nav.open .nav__list a {
    display: block;
    padding: 18px 24px;
    font-size: 18px;
  }
  .nav__sep { display: none; }
  .hamburger { display: flex; }
  .header__brand-logo { height: 34px; }
  .header__product { font-size: 19px; }
  .contact__wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .flow__steps { flex-direction: column; }
  .flow__arrow { transform: rotate(90deg); padding-top: 0; align-self: center; }
  .implement__grid { grid-template-columns: repeat(2, 1fr); }
  .guide__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__inner { grid-template-columns: 1fr; gap: 22px; }
  .hero__col--title { text-align: left; order: -1; }
}

@media (max-width: 600px) {
  .section { padding: 44px 0; }
  .header__brand-logo { height: 30px; }
  .header__product { font-size: 17px; }
  .header__divider { height: 24px; }
  .hero { padding: 72px 14px 18px; }
  .hero__inner { padding: 36px 22px; }
  .hero__actions { flex-direction: column; }
  .hero__stats { gap: 16px; }
  .stat__divider { display: none; }
  .cases__grid { grid-template-columns: 1fr; }
  .usecases__grid { grid-template-columns: 1fr; }
  .implement__grid { grid-template-columns: 1fr; }
  .implement__premise { flex-direction: column; gap: 12px; }
  .guide__grid { grid-template-columns: 1fr; }
}