/* ============================================================
   BizCraft by fromdata — style.css
   プライマリカラー: #2563eb（ブルー）
   ============================================================ */

/* ===== リセット & ベース ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.75;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; transition: color 0.2s; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
address { font-style: normal; }

/* ===== CSS変数 ===== */
:root {
  --color-primary:      #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-darker: #1e40af;
  --color-primary-light:#3b82f6;
  --color-primary-pale: #eff6ff;
  --color-accent:       #b91c26;
  --color-text:         #1a1a2e;
  --color-text-muted:   #64748b;
  --color-bg:           #f8fafc;
  --color-bg-dark:      #f1f5f9;
  --color-border:       #e2e8f0;
  --color-white:        #ffffff;
  --color-footer-bg:    #0f172a;
  --color-footer-text:  #94a3b8;
  --max-w: 1200px;
  --section-py: 5rem;
  --radius: 10px;
  --shadow: 0 2px 16px rgba(37,99,235,0.07);
  --shadow-hover: 0 6px 28px rgba(37,99,235,0.14);
  --transition: 0.22s ease;
}

/* ===== ユーティリティ ===== */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: var(--section-py) 0; }
.section--gray { background: var(--color-bg); }
.section--dark { background: var(--color-footer-bg); color: var(--color-white); }

/* セクションヘッダー */
.section__header { text-align: center; margin-bottom: 3.5rem; }
.section__label {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}
.section--dark .section__label { color: var(--color-primary-light); }
.section__label::before,
.section__label::after {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}
.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.section__desc {
  margin-top: 1rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.95rem;
}
.section--dark .section__desc { color: #94a3b8; }

/* ===== ボタン ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.85rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1.5px solid transparent;
  letter-spacing: 0.02em;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37,99,235,0.3);
}
.btn--accent {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: #8f1520;
  border-color: #8f1520;
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(185,28,38,0.3);
}
.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary-pale);
}
.btn--ghost-white {
  background: transparent;
  border-color: rgba(255,255,255,0.45);
  color: var(--color-white);
}
.btn--ghost-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.8);
}
.btn--lg { padding: 1rem 2.25rem; font-size: 1rem; }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ===== ヘッダー ===== */
.header {
  position: sticky; top: 0; z-index: 200;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s;
}
.header.is-scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.07); }
.header__inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.header__logo {
  display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0;
}
.header__logo img { height: 34px; width: auto; }
.header__logo-by {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-border);
  padding-left: 0.75rem;
  line-height: 1.3;
}
.header__logo-by span { display: block; color: var(--color-text); font-weight: 700; font-size: 0.72rem; }
.header__nav ul {
  display: flex; align-items: center; gap: 0.1rem;
}
.header__nav a {
  display: block; padding: 0.5rem 0.9rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text); border-radius: 999px;
  transition: var(--transition);
}
.header__nav a:hover { color: var(--color-primary); background: var(--color-primary-pale); }
.header__nav .nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.5rem 1.2rem;
  margin-left: 0.5rem;
  font-weight: 700;
}
.header__nav .nav-cta:hover {
  background: #8f1520 !important;
  color: var(--color-white) !important;
}
.header__menu-btn {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; background: none; border: none; cursor: pointer;
  padding: 6px; width: 40px; height: 40px;
}
.header__menu-btn span {
  display: block; width: 22px; height: 1.5px;
  background: var(--color-text); border-radius: 2px;
  transition: var(--transition); transform-origin: center;
}
.header__menu-btn.is-active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.header__menu-btn.is-active span:nth-child(2) { opacity: 0; }
.header__menu-btn.is-active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ===== ヒーロー ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 45%, #1d4ed8 100%);
  min-height: 620px;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 75% 50%, rgba(59,130,246,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(37,99,235,0.12) 0%, transparent 70%);
  pointer-events: none;
}
/* グリッドパターン */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero__inner {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 0 auto; width: 100%;
  padding: 5rem 1.5rem;
  display: grid; grid-template-columns: 58% 42%;
  gap: 3rem; align-items: center;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.2em;
  text-transform: uppercase; color: rgba(148,163,184,0.85);
  margin-bottom: 1.25rem;
}
.hero__eyebrow::before {
  content: ''; display: block; width: 20px; height: 1px;
  background: var(--color-primary-light);
}
.hero__title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}
.hero__title em {
  font-style: normal;
  color: var(--color-primary-light);
}
.hero__desc {
  font-size: 1rem;
  color: rgba(203,213,225,0.9);
  max-width: 640px;
  margin-bottom: 2.5rem;
  line-height: 1.85;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__visual {
  display: flex; align-items: center; justify-content: center;
}
.hero__media { position: relative; width: 100%; }
.hero__media::before {
  content: '';
  position: absolute; inset: -10%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.16) 0%, transparent 70%);
}
.hero__media-img {
  position: relative; width: 100%; display: block;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.4));
}

/* ===== キーポイントバー ===== */
.keypoints {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 0;
}
.keypoints__inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.keypoint-item {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.5rem 1.75rem;
  border-right: 1px solid var(--color-border);
}
.keypoint-item:last-child { border-right: none; }
.keypoint-item__icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--color-primary-pale);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--color-primary);
}
.keypoint-item__icon svg { width: 22px; height: 22px; }
.keypoint-item__text strong {
  display: block; font-size: 0.875rem; font-weight: 700;
  line-height: 1.3; margin-bottom: 0.15rem;
}
.keypoint-item__text span { font-size: 0.78rem; color: var(--color-text-muted); }

/* ===== BizCraftとは ===== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center;
}
.about-label {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--color-primary); margin-bottom: 0.75rem;
}
.about-label::before { content: ''; display: block; width: 16px; height: 1.5px; background: var(--color-primary); }
.about-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800; line-height: 1.3;
  margin-bottom: 1.5rem;
}
.about-desc {
  font-size: 0.95rem; color: var(--color-text-muted);
  line-height: 1.9; margin-bottom: 1.75rem;
}
.about-flow {
  width: 100%; border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

/* 課題カード */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.problem-item {
  display: flex; align-items: flex-start; gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.problem-item:hover { border-color: var(--color-primary); }
.problem-item__icon { color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }
.problem-item p { font-size: 0.9rem; font-weight: 600; margin: 0; line-height: 1.5; }
.problems-note {
  font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.9;
  max-width: 760px; margin: 0 auto; padding: 1.25rem 1.5rem;
  background: var(--color-white); border-radius: var(--radius);
  border-left: 3px solid var(--color-primary);
}

/* Before / After 比較 */
.ba-compare {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem; align-items: stretch; max-width: 980px; margin: 2rem auto 0;
}
.ba-block { padding: 1.75rem 2rem; border-radius: var(--radius); }
.ba-block--before { background: #fef2f2; border-left: 3px solid #dc2626; }
.ba-block--after { background: #f0fdf4; border-left: 3px solid #16a34a; }
.ba-block__label {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase; margin-bottom: 1rem;
}
.ba-block--before .ba-block__label { color: #dc2626; }
.ba-block--after .ba-block__label { color: #16a34a; }
.ba-block__list { display: flex; flex-direction: column; gap: 0.65rem; }
.ba-block__list li { font-size: 0.875rem; line-height: 1.6; padding-left: 1.4em; position: relative; }
.ba-block--before .ba-block__list li { color: #7f1d1d; }
.ba-block--before .ba-block__list li::before { content: '✗'; position: absolute; left: 0; color: #dc2626; font-weight: 700; }
.ba-block--after .ba-block__list li { color: #14532d; }
.ba-block--after .ba-block__list li::before { content: '✓'; position: absolute; left: 0; color: #16a34a; font-weight: 700; }
.ba-arrow { display: flex; align-items: center; justify-content: center; font-size: 1.75rem; font-weight: 800; color: var(--color-primary); }

/* BizCraft+ 拡張セクション */
.extension-diagram {
  max-width: 780px; margin: 2.5rem auto 0;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-bg); padding: 2.5rem;
}
.extension-modules {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem; margin-bottom: 1.75rem;
}
.extension-module {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  padding: 1rem 0.5rem; border-radius: var(--radius);
  border: 1px solid rgba(37,99,235,0.2); background: var(--color-primary-pale);
  text-align: center; font-size: 0.85rem; font-weight: 700; color: var(--color-text);
}
.extension-module__icon { width: 24px; height: 24px; color: var(--color-primary); }
.extension-module__icon svg { width: 100%; height: 100%; }
.extension-modules--plus { margin-top: 1.75rem; margin-bottom: 0; }
.extension-module--plus { border-color: rgba(234,88,12,0.3); background: #fff7ed; color: #c2410c; }
.extension-module--plus .extension-module__icon { color: #c2410c; }
.extension-boxes { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.extension-box {
  flex: 1 1 260px; max-width: 320px; padding: 1.5rem; border-radius: var(--radius);
  text-align: center; border: 1px solid var(--color-border);
}
.extension-box--core { background: var(--color-primary-pale); border-color: rgba(37,99,235,0.35); }
.extension-box--plus { background: #fff7ed; border-color: rgba(234,88,12,0.35); }
.extension-box__title { font-size: 1.1rem; font-weight: 800; margin-bottom: 0.35rem; }
.extension-box--plus .extension-box__title { color: #c2410c; }
.extension-box__desc { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.6; }
.extension-db { display: flex; align-items: center; flex-shrink: 0; padding: 0 1rem; }
.extension-db__line { width: 1.5rem; height: 1px; background: var(--color-primary); opacity: 0.5; }
.extension-db__icon-wrap { display: flex; flex-direction: column; align-items: center; gap: 0.2rem; padding: 0 0.5rem; color: var(--color-primary); }
.extension-db__icon-wrap svg { width: 22px; height: 22px; }
.extension-db__label { font-size: 0.7rem; font-weight: 800; color: var(--color-primary); }
.extension-note {
  font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.85;
  max-width: 720px; margin: 1.75rem auto 0; text-align: center;
}
.extension-examples {
  max-width: 960px; margin: 2rem auto 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.extension-example-card {
  padding: 1.25rem 1.4rem; border-radius: var(--radius);
  border: 1px solid rgba(234,88,12,0.25); background: #fff7ed;
}
.extension-example-card__head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.85rem; }
.extension-example-card__icon { width: 26px; height: 26px; color: #c2410c; flex-shrink: 0; }
.extension-example-card__icon svg { width: 100%; height: 100%; }
.extension-example-card__title { font-size: 0.95rem; font-weight: 800; color: #9a3412; }
.extension-example-card__list { display: flex; flex-direction: column; gap: 0.45rem; }
.extension-example-card__list li {
  font-size: 0.82rem; color: var(--color-text-muted); line-height: 1.5;
  padding-left: 0.9rem; position: relative;
}
.extension-example-card__list li::before { content: '–'; position: absolute; left: 0; color: #c2410c; }

/* ===== 機能モジュール（タブ） ===== */
.module-tabs {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-bottom: 2.5rem; justify-content: center;
}
.module-tab {
  padding: 0.6rem 1.35rem;
  border-radius: 999px;
  font-size: 0.875rem; font-weight: 600;
  border: 1.5px solid rgba(255,255,255,0.15);
  color: rgba(203,213,225,0.75);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
}
.module-tab:hover {
  border-color: rgba(255,255,255,0.35);
  color: var(--color-white);
  background: rgba(255,255,255,0.06);
}
.module-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 12px rgba(37,99,235,0.4);
}
.module-tag {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(59,130,246,0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(59,130,246,0.25);
  padding: 0.2rem 0.6rem;
  border-radius: 999px; margin-bottom: 0.75rem;
}
.module-panel { display: none; }
.module-panel.is-active { display: block; }
.module-panel__inner {
  display: grid; grid-template-columns: 44% 56%;
  gap: 3rem; align-items: start;
}
.module-panel__title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800; color: var(--color-white);
  margin-bottom: 0.75rem; line-height: 1.3;
}
.module-panel__desc {
  font-size: 0.9rem; color: #94a3b8;
  line-height: 1.85; margin-bottom: 1.5rem;
}
.module-feature-list {
  display: flex; flex-direction: column; gap: 0.55rem;
  margin-bottom: 0;
}
.module-feature-list li {
  display: flex; align-items: flex-start; gap: 0.7rem;
  font-size: 0.875rem; color: rgba(203,213,225,0.85);
  line-height: 1.6;
}
.module-feature-list li::before {
  content: '';
  display: block; width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary-light);
  flex-shrink: 0; margin-top: 0.45rem;
}
.module-screen-wrap {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 8px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}
.module-screen-bar {
  display: flex; gap: 5px; padding: 0 2px 6px;
}
.module-screen-bar span {
  display: block; width: 7px; height: 7px; border-radius: 50%;
}
.module-screen-bar span:nth-child(1) { background: rgba(255,255,255,0.2); }
.module-screen-bar span:nth-child(2) { background: rgba(255,255,255,0.12); }
.module-screen-bar span:nth-child(3) { background: rgba(255,255,255,0.08); }
.module-screen-img {
  width: 100%; border-radius: 6px; display: block;
  border: 1px solid rgba(255,255,255,0.06);
  cursor: zoom-in;
}

/* 画像拡大ライトボックス */
.img-lightbox {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(15,23,42,0.85);
  display: flex; align-items: center; justify-content: center;
  padding: 4vh 4vw;
  opacity: 0; visibility: hidden;
  transition: opacity 0.2s ease;
}
.img-lightbox.is-open { opacity: 1; visibility: visible; }
.img-lightbox__img {
  max-width: 100%; max-height: 92vh;
  border-radius: 8px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}
.img-lightbox__close {
  position: absolute; top: 20px; right: 24px;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2);
  color: #fff; font-size: 1.5rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.img-lightbox__close:hover { background: rgba(255,255,255,0.22); }

/* スクリーンショットなし — 機能ビジュアル代替 */
.module-feature-visual {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 2rem 2.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  min-height: 220px; justify-content: center;
}
.module-feature-visual__item {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.15);
  border-radius: 8px;
}
.module-feature-visual__item svg { width: 20px; height: 20px; color: var(--color-primary-light); flex-shrink: 0; }
.module-feature-visual__item p { font-size: 0.875rem; color: rgba(203,213,225,0.9); margin: 0; font-weight: 500; }

/* ===== 差別化ポイント ===== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.benefit-card {
  padding: 2rem 1.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.benefit-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s ease;
}
.benefit-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.benefit-card:hover::before { transform: scaleX(1); }
.benefit-card__num {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em;
  color: var(--color-primary); opacity: 0.6;
  margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem;
}
.benefit-card__num::after { content: ''; flex: 1; height: 1px; background: var(--color-border); }
.benefit-card__icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--color-primary-pale);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); margin-bottom: 1rem;
}
.benefit-card__icon svg { width: 24px; height: 24px; }
.benefit-card__title { font-size: 1rem; font-weight: 700; margin-bottom: 0.6rem; line-height: 1.4; }
.benefit-card__desc { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.8; }

/* ===== セキュリティ ===== */
.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.security-item {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: rgba(37,99,235,0.05);
  border: 1px solid rgba(37,99,235,0.12);
  border-radius: var(--radius);
}
.security-item__icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--color-primary-pale);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); flex-shrink: 0;
}
.security-item__icon svg { width: 18px; height: 18px; }
.security-item__label { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em; color: var(--color-text-muted); margin-bottom: 0.2rem; }
.security-item__value { font-size: 0.9rem; font-weight: 600; color: var(--color-text); line-height: 1.4; }

/* ===== 対象業種 ===== */
.target-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.target-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: var(--transition);
}
.target-card:hover { box-shadow: var(--shadow-hover); border-color: var(--color-primary); transform: translateY(-3px); }
.target-card__icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--color-primary); color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}
.target-card__icon svg { width: 26px; height: 26px; }
.target-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.6rem; }
.target-card__modules { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 1rem; line-height: 1.5; }
.target-card__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.target-tag {
  font-size: 0.75rem; font-weight: 600;
  padding: 0.2rem 0.65rem; border-radius: 999px;
  background: var(--color-primary-pale);
  color: var(--color-primary);
  border: 1px solid rgba(37,99,235,0.15);
}

/* ===== テックスタック ===== */
.tech-tag {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 8px;
  font-size: 0.8rem; font-weight: 600;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(203,213,225,0.8);
  white-space: nowrap;
}
.tech-group { margin-bottom: 2rem; }
.tech-group__label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: #64748b; margin-bottom: 0.75rem;
}
.tech-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ===== CTAバナー ===== */
.cta-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);
  padding: 5rem 0;
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; top: -80px; right: -80px;
  width: 300px; height: 300px;
  border-radius: 50%;
  border: 50px solid rgba(255,255,255,0.04);
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute; bottom: -60px; left: -60px;
  width: 220px; height: 220px;
  border-radius: 50%;
  border: 35px solid rgba(255,255,255,0.04);
  pointer-events: none;
}
.cta-section__inner { position: relative; z-index: 1; }
.cta-section__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800; color: var(--color-white);
  margin-bottom: 0.75rem; line-height: 1.3;
}
.cta-section__desc {
  font-size: 0.95rem; color: rgba(203,213,225,0.85);
  margin-bottom: 2rem;
}
.cta-section__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ===== フッター ===== */
.footer { background: var(--color-footer-bg); color: var(--color-footer-text); }
.footer__inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 4rem 1.5rem 2.5rem;
  display: grid; grid-template-columns: 240px 1fr auto;
  gap: 4rem; align-items: start;
}
.footer__brand {}
.footer__brand img { height: 32px; width: auto; filter: brightness(0) invert(1); }
.footer__tagline { font-size: 0.83rem; margin-top: 0.75rem; opacity: 0.5; line-height: 1.7; }
.footer__parent {
  margin-top: 1.25rem;
  font-size: 0.78rem; opacity: 0.45;
  display: flex; align-items: center; gap: 0.4rem;
}
.footer__parent a { opacity: 1; color: rgba(148,163,184,0.7); transition: color 0.2s; }
.footer__parent a:hover { color: var(--color-white); }
.footer__nav { display: flex; gap: 3.5rem; }
.footer__nav-heading {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
  margin-bottom: 1rem;
}
.footer__nav ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer__nav a { font-size: 0.83rem; opacity: 0.45; transition: opacity 0.2s; }
.footer__nav a:hover { opacity: 1; color: var(--color-white); }
.footer__info { }
.footer__contact-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; font-weight: 600;
  color: var(--color-primary-light);
  padding: 0.65rem 1.25rem;
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 999px; margin-bottom: 1.5rem;
  transition: var(--transition);
}
.footer__contact-link:hover { background: rgba(59,130,246,0.1); border-color: var(--color-primary-light); }
.footer__contact-link svg { width: 14px; height: 14px; }
.footer__address { font-size: 0.8rem; line-height: 1.85; opacity: 0.4; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  text-align: center; padding: 1.25rem;
  font-size: 0.78rem; opacity: 0.35;
  max-width: var(--max-w); margin: 0 auto;
}

/* ===== レスポンシブ ===== */
@media (max-width: 1024px) {
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .keypoints__inner { grid-template-columns: repeat(2, 1fr); }
  .keypoint-item:nth-child(2) { border-right: none; }
  .keypoint-item:nth-child(3) { border-top: 1px solid var(--color-border); }
  .keypoint-item:nth-child(4) { border-top: 1px solid var(--color-border); border-right: none; }
}

@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .module-panel__inner { grid-template-columns: 1fr; }
  .target-grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__info { grid-column: 1 / -1; }
  .footer__nav { gap: 2rem; }
}

@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }
  .header__nav {
    display: none; position: fixed;
    top: 68px; left: 0; right: 0; bottom: 0;
    background: var(--color-white); padding: 1.5rem;
    overflow-y: auto; z-index: 199;
  }
  .header__nav.is-open { display: block; }
  .header__nav ul { flex-direction: column; gap: 0; }
  .header__nav li a {
    display: block; padding: 1rem;
    font-size: 1rem; border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }
  .header__nav .nav-cta { margin-top: 1.5rem; margin-left: 0; display: block; text-align: center; border-radius: var(--radius); border-bottom: none; }
  .header__menu-btn { display: flex; }
  .module-tabs { gap: 0.35rem; }
  .module-tab { font-size: 0.8rem; padding: 0.5rem 1rem; }
  .benefits-grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 2.5rem; padding: 3rem 1.5rem 2rem; }
  .footer__nav { flex-direction: column; gap: 1.5rem; }
  .hero { min-height: auto; }
  .hero__inner { padding: 4rem 1.5rem; }
}

@media (max-width: 640px) {
  .keypoints__inner { grid-template-columns: 1fr; }
  .keypoint-item { border-right: none; border-top: 1px solid var(--color-border); }
  .keypoint-item:first-child { border-top: none; }
  .target-grid { grid-template-columns: 1fr; }
  .cta-section__actions { flex-direction: column; align-items: center; }
}

/* ===== BizCraft × DigiAid シナジーセクション ===== */
.synergy-section {
  background: linear-gradient(160deg, #f0f7ff 0%, #eef2ff 100%);
  position: relative; overflow: hidden;
}
.synergy-section::before {
  content: '';
  position: absolute; top: -120px; right: -120px;
  width: 450px; height: 450px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.synergy-section::after {
  content: '';
  position: absolute; bottom: -80px; left: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(185,28,38,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.synergy-combo {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  background: var(--color-white);
  border-radius: 16px;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 28px rgba(37,99,235,0.08);
  overflow: hidden;
  margin-bottom: 2rem;
}
.synergy-card { padding: 2.25rem 2rem; }
.synergy-card--bizcraft { border-right: 1px solid var(--color-border); }
.synergy-card--digiaid  { border-left:  1px solid var(--color-border); }

.synergy-card__badge {
  display: inline-flex; align-items: center;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 0.2rem 0.65rem;
  border-radius: 999px; margin-bottom: 0.75rem;
}
.synergy-card--bizcraft .synergy-card__badge {
  background: var(--color-primary-pale);
  color: var(--color-primary);
  border: 1px solid rgba(37,99,235,0.15);
}
.synergy-card--digiaid .synergy-card__badge {
  background: #fff1f2;
  color: var(--color-accent);
  border: 1px solid rgba(185,28,38,0.15);
}
.synergy-card__name {
  font-size: 1.5rem; font-weight: 900;
  margin-bottom: 0.5rem; line-height: 1.2;
}
.synergy-card--bizcraft .synergy-card__name { color: var(--color-primary); }
.synergy-card--digiaid  .synergy-card__name { color: var(--color-accent); }
.synergy-card__subtitle {
  font-size: 0.83rem; color: var(--color-text-muted);
  margin-bottom: 1.25rem; line-height: 1.7;
}
.synergy-card__list { display: flex; flex-direction: column; gap: 0.5rem; }
.synergy-card__list li {
  display: flex; align-items: flex-start; gap: 0.6rem;
  font-size: 0.875rem; color: var(--color-text); line-height: 1.5;
}
.synergy-card__list li::before {
  content: '';
  display: block; width: 6px; height: 6px;
  border-radius: 50%; flex-shrink: 0; margin-top: 0.42rem;
}
.synergy-card--bizcraft .synergy-card__list li::before { background: var(--color-primary); }
.synergy-card--digiaid  .synergy-card__list li::before { background: var(--color-accent); }

.synergy-plus {
  display: flex; align-items: center; justify-content: center;
  padding: 0 1.25rem;
  font-size: 1.75rem; font-weight: 900; flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.synergy-result {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2.25rem 2rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 2px 12px rgba(37,99,235,0.05);
}
.synergy-result__label {
  display: flex; align-items: center; gap: 1rem;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--color-text-muted);
  margin-bottom: 2rem;
}
.synergy-result__label::before,
.synergy-result__label::after { content: ''; flex: 1; height: 1px; background: var(--color-border); }

.synergy-steps {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem; position: relative;
}
.synergy-steps::before {
  content: '';
  position: absolute;
  top: 23px;
  left: calc(16.67% + 24px);
  right: calc(16.67% + 24px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 0;
}
.synergy-step { text-align: center; position: relative; z-index: 1; }
.synergy-step__num {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #1e40af);
  color: var(--color-white);
  font-size: 0.83rem; font-weight: 800;
  margin: 0 auto 1rem;
  box-shadow: 0 3px 12px rgba(37,99,235,0.28);
}
.synergy-step h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.4; }
.synergy-step p { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.75; }
.synergy-step__media {
  margin: 1rem auto 0; max-width: 160px;
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.synergy-step__media img { width: 100%; display: block; }

.synergy-menu {
  margin-top: 2.25rem; padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.synergy-menu__title {
  font-size: 0.8rem; font-weight: 800; letter-spacing: 0.06em;
  color: var(--color-text-muted); margin-bottom: 1rem; text-align: center;
}
.synergy-menu__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}
.synergy-menu__item {
  padding: 0.75rem 1rem; border-radius: var(--radius);
  background: var(--color-bg); border: 1px solid var(--color-border);
  font-size: 0.8rem; font-weight: 600; text-align: center;
}

.synergy-cta { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* 導入事例紹介 */
.case-study__card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: 16px; padding: 2.5rem; max-width: 900px; margin: 0 auto;
}
.case-study__header {
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  margin-bottom: 2rem; padding-bottom: 2rem; border-bottom: 1px solid var(--color-border);
}
.case-study__logo { height: 48px; width: auto; }
.case-study__company-name { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.25rem; }
.case-study__company-link { font-size: 0.8rem; color: var(--color-primary); }
.case-study__tag {
  display: inline-block; margin-left: 0.75rem;
  font-size: 0.72rem; font-weight: 700; padding: 0.25rem 0.75rem; border-radius: 999px;
  background: var(--color-primary-pale); color: var(--color-primary);
}
.case-study__section-title {
  font-size: 0.95rem; font-weight: 800; margin: 2rem 0 1rem;
}
.case-study__section-title:first-of-type { margin-top: 0; }
.case-study__overview-text { font-size: 0.875rem; line-height: 1.85; color: var(--color-text); margin-bottom: 1rem; }
.case-study__list { display: flex; flex-direction: column; gap: 0.5rem; }
.case-study__list li {
  font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.6;
  padding-left: 1.2rem; position: relative;
}
.case-study__list li::before { content: '✓'; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

.case-study__phases {
  position: relative; display: flex; flex-direction: column;
  gap: 2rem; padding-left: 3rem;
}
.case-study__phases::before {
  content: ''; position: absolute; left: 1.15rem; top: 0.2rem; bottom: 0.2rem;
  width: 2px; background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
}
.case-study__phase { position: relative; }
.case-study__phase-num {
  position: absolute; left: -3rem; top: 0;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #1e40af);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 800;
  box-shadow: 0 3px 12px rgba(37,99,235,0.28);
}
.case-study__phase-head { display: flex; align-items: baseline; gap: 0.6rem; margin-bottom: 0.9rem; padding-top: 0.3rem; }
.case-study__phase-title { font-size: 0.95rem; font-weight: 800; }
.case-study__phase-duration {
  font-size: 0.7rem; font-weight: 700; color: var(--color-primary);
  background: var(--color-primary-pale); padding: 0.15rem 0.6rem; border-radius: 999px;
}
.case-study__phase-items {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}
.case-study__phase-item {
  padding: 1rem 1.1rem; border-radius: 10px;
  background: var(--color-white); border: 1px solid var(--color-border);
}
.case-study__phase-item-title {
  font-size: 0.8rem; font-weight: 700; margin-bottom: 0.35rem;
  padding-left: 0.8rem; position: relative;
}
.case-study__phase-item-title::before {
  content: ''; position: absolute; left: 0; top: 0.35rem;
  width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary);
}
.case-study__phase-item-desc { font-size: 0.78rem; color: var(--color-text-muted); line-height: 1.7; }

.case-study__media {
  margin-top: 1rem; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .synergy-combo { grid-template-columns: 1fr; }
  .synergy-card--bizcraft { border-right: none; border-bottom: 1px solid var(--color-border); }
  .synergy-card--digiaid  { border-left:  none; border-top:    1px solid var(--color-border); }
  .synergy-plus {
    padding: 0.6rem 1.5rem; font-size: 1.5rem;
    background: none; -webkit-text-fill-color: var(--color-text-muted);
    background-clip: unset; display: block; text-align: center;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
  .synergy-steps { grid-template-columns: 1fr; gap: 1.25rem; }
  .synergy-steps::before { display: none; }
  .synergy-cta { flex-direction: column; align-items: center; }
}