/* =========================================
   D.support 公式サイト スタイルシート v2
   デザイン言語: DESIGN.md（LP F案ベース／先端医療・サイエンス系）
   シグネチャー: スキューカード・立体シャドウ・青→緑グラデーション
   ========================================= */

/* ---------- Design Tokens ---------- */
:root {
  /* Colors */
  --color-base: #ffffff;
  --color-base-2: #f4f8fb;
  --color-primary: #0099cc;        /* DS Blue */
  --color-primary-light: #33bbdd;
  --color-primary-dark: #333366;   /* Navy */
  --color-navy: #333366;
  --color-accent: #00cc99;         /* Green */
  --color-sub: #9999cc;
  --color-link: #007799;           /* 本文リンク（コントラスト確保用の濃色） */

  /* v1互換エイリアス（HTML内のインラインstyleが参照） */
  --color-bg-dark: #333366;
  --color-bg-secondary: #f4f8fb;
  --color-bg-light: #f4f8fb;
  --color-surface: #ffffff;
  --color-surface-alt: #f4f8fb;
  --color-text-primary: #333366;
  --color-text-secondary: #535353;
  --color-text-muted: #8a8aa0;
  --color-text: #333333;
  --color-border: rgba(0, 153, 204, 0.16);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0099cc 0%, #00cc99 100%);
  --gradient-primary-hover: linear-gradient(135deg, #007799 0%, #00aa77 100%);
  --gradient-navy: linear-gradient(135deg, #333366 0%, #2266aa 100%);
  --gradient-hero-band-main: linear-gradient(135deg, #333366 0%, #66bbdd 100%);
  --gradient-hero-band-sub: linear-gradient(135deg, #66ddbb 0%, #ffffff 100%);
  --gradient-page-hero: linear-gradient(135deg, #333366 0%, #1f4e8c 55%, #0099cc 100%);
  --gradient-underline: linear-gradient(90deg, #0099cc, #9999cc);
  --gradient-vertical-badge: linear-gradient(to bottom, #333366 0%, #0099cc 100%);

  /* Typography */
  --font-display: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
  --font-body: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-number: 'Outfit', 'Noto Sans JP', sans-serif;

  --text-hero: clamp(2rem, 5vw, 3.5rem);
  --text-display: clamp(1.6rem, 3.4vw, 2.25rem);
  --text-heading: clamp(1.4rem, 2.8vw, 1.875rem);
  --text-subheading: clamp(1.1rem, 2vw, 1.375rem);
  --text-body-lg: 1.0625rem;
  --text-body: 0.9375rem;
  --text-small: 0.8125rem;
  --text-caption: 0.75rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 7rem;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(51, 51, 102, 0.06);
  --shadow-md: 0 4px 14px rgba(51, 51, 102, 0.1);
  --shadow-lg: 0 12px 32px rgba(51, 51, 102, 0.14);
  --shadow-card: 0 4px 14px rgba(51, 51, 102, 0.08);
  --shadow-button: 0 4px 14px rgba(0, 153, 204, 0.35);
  --shadow-pop-navy: 4px 4px 0 #ffffff, 5px 5px 0 #333366;
  --shadow-pop-blue: 4px 4px 0 #ffffff, 5px 5px 0 #0099cc;
  --shadow-pop-green: 4px 4px 0 #ffffff, 5px 5px 0 #00cc99;

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;

  /* ステップグラデーション帯域（順序リスト用） */
  --step-c1: #333366;
  --step-c2: #2266aa;
  --step-c3: #0099cc;
  --step-c4: #00bbaa;
  --step-c5: #00cc99;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 153, 204, 0.4);
  border-radius: 4px;
}

::selection {
  background: rgba(0, 153, 204, 0.25);
}

[hidden] {
  display: none !important;
}

/* grain は v2 デザインでは不使用 */
.grain {
  display: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 153, 204, 0.12);
  transition: box-shadow var(--transition-base), height var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 44px;
  width: auto;
}

.logo-text {
  font-family: var(--font-number);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.2rem;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--color-navy);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  bottom: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease-out-quart);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link[aria-current='page']::after {
  transform: scaleX(1);
}

.nav-link[aria-current='page'] {
  color: var(--color-primary);
}

/* ドロップダウン */
.nav-item-dropdown {
  position: relative;
}

.nav-caret {
  display: inline-block;
  margin-left: 4px;
  transition: transform 0.2s var(--ease-out-quart);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 260px;
  padding: var(--space-xs) 0;
  background: var(--color-base);
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-top: 3px solid #0099cc;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s var(--ease-out-quart), transform 0.2s var(--ease-out-quart), visibility 0.2s;
}

.nav-item-dropdown:hover .nav-dropdown,
.nav-item-dropdown:focus-within .nav-dropdown,
.nav-item-dropdown.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-item-dropdown:hover .nav-caret,
.nav-item-dropdown:focus-within .nav-caret,
.nav-item-dropdown.is-open .nav-caret {
  transform: rotate(180deg);
}

.nav-dropdown a {
  display: block;
  padding: 0.65rem var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 400;
  color: var(--color-navy);
}

.nav-dropdown a:hover,
.nav-dropdown a:focus-visible {
  background: var(--color-base-2);
  color: var(--color-primary);
}

/* ハンバーガー */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-navy);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* モバイルナビ */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-sm);
  padding: calc(var(--header-height) + var(--space-md)) var(--space-lg) var(--space-2xl);
  overflow-y: auto;
  background: var(--color-base);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  padding: var(--space-xs) var(--space-lg);
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

.mobile-nav .mobile-nav-sub {
  font-size: var(--text-small);
  font-weight: 400;
  padding-left: calc(var(--space-lg) + 1em);
  opacity: 0.9;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-display);
  font-size: var(--text-body);
  font-weight: 700;
  line-height: 1.4;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
  min-height: 56px;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--gradient-primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 204, 153, 0.4);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.96);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- Hero（トップ） ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-2xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
}

/* オーバーレイ: 左から Navy → 透明（F案の型） */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(51, 51, 102, 0.5) 0%,
    rgba(51, 51, 102, 0.32) 35%,
    rgba(0, 153, 204, 0.1) 70%,
    rgba(0, 153, 204, 0.04) 100%
  );
}

/* 医療業界をつなぐネットワークのSVGアニメーション */
.hero-network {
  position: absolute;
  right: 4%;
  bottom: -6%;
  width: min(46vw, 560px);
  height: auto;
  color: #ffffff;
  opacity: 0.5;
}

.hn-links line {
  stroke: currentColor;
  stroke-opacity: 0.45;
  stroke-dasharray: 6 10;
  animation: hnDash 26s linear infinite;
}

.hn-nodes circle {
  fill: #ffffff;
  fill-opacity: 0.85;
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.65));
  animation: hnFloat 7s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.hn-nodes circle:nth-child(2n) { animation-duration: 9s; animation-delay: -2s; }
.hn-nodes circle:nth-child(3n) { animation-duration: 11s; animation-delay: -4s; }
.hn-nodes circle:nth-child(4n) { animation-duration: 8s; animation-delay: -1s; }

.hn-core {
  fill: #00cc99 !important;
  fill-opacity: 1;
  filter: drop-shadow(0 0 12px rgba(0, 204, 153, 0.9));
  animation: hnPulse 3.2s ease-in-out infinite !important;
}

@keyframes hnDash {
  to { stroke-dashoffset: -320; }
}

@keyframes hnFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes hnPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.35); }
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
}

.hero-title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: var(--space-lg);
}

/* ヒーロー帯（スキュー + 立体シャドウ） */
.hero-box {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  padding: 0.5rem 1.5rem;
  transform: skewX(-5deg);
}

.hero-box > span {
  display: inline-block;
  transform: skewX(5deg);
}

/* 1行目: 白→緑の明るい帯 + 紺文字 */
.hero-box-white {
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  background: var(--gradient-hero-band-sub);
  color: var(--color-navy);
  box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.9), 5px 5px 0 #66ddbb;
  margin-bottom: 1.25rem;
}

/* 2行目: 紺→青の帯 + 白文字（メイン） */
.hero-box-blue {
  font-size: clamp(1.55rem, 3.6vw, 2.7rem);
  background: var(--gradient-hero-band-main);
  color: #fff;
  box-shadow: var(--shadow-pop-navy);
}

/* サブタイトル帯（skew + 全角トラッキング — F案の型） */
.hero-subtitle-band {
  display: inline-block;
  margin-bottom: var(--space-lg);
}

.hero-subtitle-band span {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(0.9375rem, 1.8vw, 1.25rem);
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  padding: 0.65rem 1.9rem;
  transform: skewX(-5deg);
  box-shadow: 4px 4px 0 #fff, 5px 5px 0 #333366;
  letter-spacing: 0.5em;
}

.hero-description {
  max-width: 620px;
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  line-height: 1.9;
  color: #fff;
  text-shadow: 0 1px 10px rgba(51, 51, 102, 0.55);
}

/* ヒーローCTA（白地＋青枠 — F案 hero-cta の型） */
.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
}

.btn-hero-main {
  background: #fff;
  color: var(--color-link);
  border: 2px solid var(--color-primary);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 153, 204, 0.3);
}

.btn-hero-main:hover {
  background: #f6fbfd;
  color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 153, 204, 0.4);
}

.cta-note {
  font-size: var(--text-small);
  color: #fff;
  opacity: 0.9;
  text-shadow: 0 1px 8px rgba(51, 51, 102, 0.55);
}

/* ヒーロー内の登場アニメーション（F案の型） */
@keyframes heroFadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* タイトル（LCP要素）は即時表示し、以降の要素だけ順次フェードイン
   （LCPがアニメーション完了待ちになるのを防ぐ） */
.hero-content .hero-subtitle-band,
.hero-content .hero-description,
.hero-content .hero-cta {
  animation: heroFadeInUp 0.6s var(--ease-out-quart) forwards;
  opacity: 0;
}

.hero-content .hero-subtitle-band { animation-delay: 0.15s; }
.hero-content .hero-description { animation-delay: 0.3s; }
.hero-content .hero-cta { animation-delay: 0.45s; }

/* PC/SP出し分け */
.sp-only { display: none; }
.pc-only { display: inline; }

@media (max-width: 768px) {
  .sp-only { display: inline; }
  .pc-only { display: none; }
}

/* 左端の縦書きサイドタイトル */
.side-title {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  background: var(--gradient-vertical-badge);
  padding: 30px 12px;
  color: #fff;
  font-family: var(--font-number);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.hero .hero-content.container {
  padding-left: calc(var(--space-md) + 44px); /* サイドタイトル分の逃げ */
  padding-right: calc(var(--space-md) + 120px); /* サイドバッジ分の逃げ */
}

/* 右側サイドバッジ（F案の型） */
.side-badges {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 6;
  display: flex;
  flex-direction: column;
}

.side-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 120px;
  padding: 22px 14px;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.side-badge-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.side-badge-icon svg {
  width: 32px;
  height: 32px;
}

.side-badge-text {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.side-badge-primary {
  background: var(--color-primary-dark);
  color: #fff;
}

.side-badge-secondary {
  background: #007ea8; /* 白文字とのコントラスト4.5:1確保 */
  color: #fff;
}

.side-badge-accent {
  background: linear-gradient(180deg, #007ea8 0%, #008a6e 100%); /* コントラスト確保 */
  color: #fff;
}

a.side-badge-accent:hover {
  background: linear-gradient(180deg, #007799 0%, #009988 100%);
  color: #fff;
}

.side-badge-cta {
  background: #00875f; /* 白文字とのコントラスト4.5:1確保 */
  color: #fff;
}

a.side-badge-cta:hover {
  background: #00734f;
  color: #fff;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-family: var(--font-number);
  font-size: 0.6875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, #fff, transparent);
  animation: scrollPulse 1.8s var(--ease-in-out) infinite;
}

@keyframes scrollPulse {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- ページヒーロー（下層） ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-2xl);
  background: var(--gradient-page-hero);
  color: #fff;
  overflow: hidden;
}

/* 右上の装飾三角 */
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 160px 160px 0;
  border-color: transparent rgba(0, 204, 153, 0.25) transparent transparent;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--gradient-primary);
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero-label {
  display: inline-block;
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #fff;
  background: var(--gradient-primary);
  padding: 0.35rem 1.1rem;
  transform: skewX(-5deg);
  box-shadow: 3px 3px 0 rgba(255, 255, 255, 0.85), 4px 4px 0 #333366;
  margin-bottom: var(--space-md);
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.page-hero-description {
  max-width: 640px;
  font-size: var(--text-body);
  opacity: 0.92;
}

/* ---------- Sections ---------- */
.section {
  padding: var(--space-2xl) 0;
}

.section-light {
  background: var(--color-base-2);
}

.section-header {
  max-width: 760px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.section-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-title,
.section-header .section-title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-navy);
}

.section-header .section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  border-radius: 2px;
  background: var(--gradient-underline);
  margin: var(--space-sm) auto 0;
}

.section-subtitle {
  margin-top: var(--space-sm);
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

.text-caption {
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

/* ---------- カード（左2色ボーダー + コーナー三角） ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.card-grid--3col {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  position: relative;
  padding: var(--space-lg);
  padding-left: calc(var(--space-lg) + 6px);
  background: var(--color-base);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

/* 左の2色ボーダー */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(to bottom, #0099cc 0%, #0099cc 50%, #00cc99 50%, #00cc99 100%);
}

/* 右下のコーナー三角 */
.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  border-style: solid;
  border-width: 0 0 36px 36px;
  border-color: transparent transparent #00cc99 transparent;
}

.card-grid .card:nth-child(even)::after {
  border-color: transparent transparent #0099cc transparent;
}

.card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-lg);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  color: var(--color-navy);
}

/* ゴースト番号 */
.card-number {
  flex-shrink: 0;
  font-family: var(--font-number);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.3;
}

.card-list li {
  position: relative;
  padding-left: 1.2em;
  margin-bottom: 0.4em;
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  transform: skewX(-8deg);
  background: var(--gradient-primary);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--color-primary);
}

.service-link:hover {
  color: var(--color-primary-dark);
  gap: 10px;
}

.service-link svg {
  transition: transform var(--transition-fast);
}

.service-link:hover svg {
  transform: translateX(2px);
}

/* ---------- データテーブル ---------- */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-radius: 12px;
  background: var(--color-base);
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: var(--text-body);
}

.data-table th,
.data-table td {
  padding: 0.8rem var(--space-sm);
  text-align: left;
  border-bottom: 1px solid rgba(0, 153, 204, 0.12);
  vertical-align: top;
}

.data-table thead th {
  background: var(--gradient-navy);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  border-bottom: none;
}

.data-table tbody th {
  background: var(--color-base-2);
  font-weight: 700;
  color: var(--color-navy);
}

.data-table tbody tr:nth-child(even) td {
  background: rgba(244, 248, 251, 0.6);
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table .num {
  font-family: var(--font-number);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------- 凡例・バッジ ---------- */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  margin: var(--space-sm) 0 var(--space-lg);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.badge {
  display: inline-block;
  padding: 0.12em 0.75em;
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.06em;
  background: var(--color-base-2);
  color: var(--color-primary);
  transform: skewX(-8deg);
}

.badge > * {
  transform: skewX(8deg);
}

.badge--new {
  background: var(--gradient-primary);
  color: #fff;
}

.badge--closed {
  background: #e3e6ec;
  color: var(--color-text-muted);
}

/* ---------- タイムライン（ステップグラデーション） ---------- */
.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding-left: 64px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--step-c1), var(--step-c3), var(--step-c5));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

/* スキュー正方形のマーカー */
.timeline-marker {
  position: absolute;
  left: -64px;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 42px;
  transform: skewX(-6deg);
  background: var(--step-c3);
  box-shadow: 3px 3px 0 #fff, 4px 4px 0 rgba(51, 51, 102, 0.35);
  color: #fff;
  font-family: var(--font-number);
  font-size: 1.05rem;
  font-weight: 700;
}

/* 帯域色: 5色を位置で割当 */
.timeline-item:nth-child(5n + 1) .timeline-marker { background: var(--step-c1); }
.timeline-item:nth-child(5n + 2) .timeline-marker { background: var(--step-c2); }
.timeline-item:nth-child(5n + 3) .timeline-marker { background: var(--step-c3); }
.timeline-item:nth-child(5n + 4) .timeline-marker { background: var(--step-c4); }
.timeline-item:nth-child(5n + 5) .timeline-marker { background: var(--step-c5); }

.timeline-title {
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.25em;
  padding-top: 0.35em;
}

.timeline-text {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

/* ---------- アコーディオン（FAQ型） ---------- */
.accordion {
  background: rgba(0, 153, 204, 0.08);
  border-radius: 10px;
  overflow: hidden;
}

.accordion + .accordion {
  margin-top: var(--space-sm);
}

.accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  font-weight: 700;
  color: var(--color-navy);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast);
}

.accordion summary:hover {
  color: var(--color-primary);
}

.accordion summary::-webkit-details-marker {
  display: none;
}

/* ＋アイコン（グラデーション円・開時45度回転） */
.accordion summary::after {
  content: '＋';
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 400;
  transition: transform var(--transition-base);
}

.accordion[open] summary::after {
  transform: rotate(45deg);
}

.accordion-body {
  padding: 0 var(--space-md) var(--space-md);
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

/* ---------- 対比2カラム（承継 売却/譲受） ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: stretch;
}

.compare-col {
  display: flex;
  flex-direction: column;
  background: var(--color-base);
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.compare-col-head {
  padding: var(--space-sm) var(--space-md);
  background: var(--gradient-primary);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  text-align: center;
  position: relative;
}

.compare-col-head::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.35);
}

.compare-col--buy .compare-col-head {
  background: var(--gradient-navy);
}

.compare-col-body {
  padding: var(--space-md);
}

/* ---------- デュアルCTA（スキューパネル） ---------- */
.dual-cta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--space-lg) + 8px);
}

.dual-cta-panel {
  padding: var(--space-lg);
  background: var(--color-base);
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-left: 4px solid var(--color-primary);
  border-radius: 10px;
  text-align: center;
  transform: skewX(-3deg);
  box-shadow: var(--shadow-pop-blue);
}

.dual-cta-panel:nth-child(2) {
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-pop-green);
}

.dual-cta-panel > * {
  transform: skewX(3deg);
}

.dual-cta-panel p {
  margin-bottom: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  color: var(--color-navy);
}

.dual-cta-panel strong {
  color: var(--color-primary);
}

/* ---------- フォーム ---------- */
.form {
  max-width: 780px;
  margin: 0 auto;
}

.form-section {
  position: relative;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  background: var(--color-base);
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.form-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.form-section-title {
  margin-bottom: var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  color: var(--color-navy);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: 0.4em;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--color-navy);
}

.required-badge,
.optional-badge {
  padding: 0.1em 0.55em;
  font-size: var(--text-caption);
  font-weight: 600;
  transform: skewX(-8deg);
}

.required-badge {
  background: #d64545;
  color: #fff;
}

.optional-badge {
  background: var(--color-base-2);
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid #c6d4e0;
  border-radius: 8px;
  background: var(--color-base);
  font-family: var(--font-body);
  font-size: 16px; /* iOSのズーム防止のため16px未満にしない */
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 153, 204, 0.18);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5em;
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.form-check input {
  margin-top: 0.3em;
  accent-color: var(--color-primary);
}

.form-note {
  margin-top: 0.4em;
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

.form-actions {
  margin-top: var(--space-lg);
  text-align: center;
}

.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- 注記・バナー ---------- */
.notice {
  padding: var(--space-sm) var(--space-md);
  border-left: 4px solid var(--color-primary);
  border-radius: 8px;
  background: var(--color-base-2);
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

.platform-banner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: 12px;
  background: var(--color-navy);
  color: #fff;
  overflow: hidden;
}

.platform-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.platform-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  border-style: solid;
  border-width: 0 0 48px 48px;
  border-color: transparent transparent rgba(0, 204, 153, 0.5) transparent;
}

.platform-banner h3 {
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  margin-bottom: 0.3em;
}

.platform-banner p {
  font-size: var(--text-small);
  opacity: 0.85;
  max-width: 640px;
}

/* Navy面上のアウトラインボタンは透明地＋白枠にする */
.platform-banner .btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
}

.platform-banner .btn-outline:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.todo-note {
  padding: var(--space-md);
  border: 2px dashed #c6d4e0;
  border-radius: 10px;
  text-align: center;
  font-size: var(--text-small);
  color: var(--color-text-muted);
  background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(51, 51, 102, 0.02) 10px, rgba(51, 51, 102, 0.02) 20px);
}

/* ---------- 記事型 ---------- */
.prose {
  max-width: 760px;
  margin: 0 auto;
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  line-height: 1.9;
}

.prose h2 {
  margin: var(--space-xl) 0 var(--space-sm);
  padding-left: var(--space-sm);
  border-left: 4px solid var(--color-primary);
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  color: var(--color-navy);
}

.prose ul {
  padding-left: 1.4em;
  list-style: disc;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- CTAセクション ---------- */
.cta-section {
  position: relative;
  background: var(--color-navy);
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--gradient-primary);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: var(--gradient-primary);
  opacity: 0.15;
  transform: skewX(-12deg);
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  color: #fff;
  background: var(--gradient-primary);
  padding: 0.4rem 1.75rem;
  transform: skewX(-5deg);
  box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.9), 5px 5px 0 rgba(0, 204, 153, 0.6);
  margin-bottom: var(--space-md);
}

.cta-description {
  font-size: var(--text-body);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: var(--space-lg);
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
}

/* CTA上の主ボタンは白地＋青枠（F案 hero-cta の型） */
.cta-buttons .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: 0 4px 15px rgba(0, 153, 204, 0.3);
}

.cta-buttons .btn-primary:hover {
  background: #f6fbfd;
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.cta-buttons .btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
}

.cta-buttons .btn-outline:hover {
  border-color: #fff;
  color: #fff;
}

/* ---------- モバイル固定CTAバー ---------- */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 98;
  padding: var(--space-xs) var(--space-sm);
  padding-bottom: max(var(--space-xs), env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(0, 153, 204, 0.15);
}

/* ---------- フッター ---------- */
.footer {
  position: relative;
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.footer a {
  color: rgba(255, 255, 255, 0.8);
}

.footer a:hover {
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-sm);
}

.footer-logo img {
  height: 40px;
  width: auto;
  background: #fff;
  border-radius: 8px;
  padding: 3px;
}

.footer-logo span {
  font-family: var(--font-number);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.footer-tagline {
  font-size: var(--text-small);
  line-height: 1.9;
  opacity: 0.85;
}

.footer-nav h4,
.footer-nav .footer-heading {
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #7fd4ea;
  margin-bottom: var(--space-sm);
}

.footer-nav ul li {
  margin-bottom: 0.5em;
  font-size: var(--text-small);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-copyright {
  font-family: var(--font-number);
  font-size: var(--text-caption);
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-caption);
}

/* ---------- スクロールアニメーション（main.jsが .active を付与） ---------- */
.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  transition: opacity 0.7s var(--ease-out-quart), transform 0.7s var(--ease-out-quart);
  will-change: opacity, transform;
}

.reveal { transform: translateY(24px); }
.reveal-left { transform: translateX(-32px); }
.reveal-right { transform: translateX(32px); }
.reveal-scale { transform: scale(0.94); }

.reveal.active,
.reveal-left.active,
.reveal-right.active,
.reveal-scale.active {
  opacity: 1;
  transform: none;
}

/* ---------- ユーティリティ ---------- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ---------- レスポンシブ ---------- */
@media (max-width: 1280px) {
  .nav-list { gap: var(--space-sm); }
  .nav { gap: var(--space-md); }
}

@media (max-width: 1024px) {
  .side-title,
  .side-badges { display: none; }

  .hero .hero-content.container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .nav .nav-list,
  .nav > .btn {
    display: none;
  }

  .mobile-menu-btn { display: flex; }
  .mobile-nav { display: flex; }

  .card-grid--3col { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}

@media (max-width: 768px) {
  :root { --header-height: 64px; }

  .logo img { height: 36px; }
  .logo-text { font-size: 1.125rem; }

  .hero {
    min-height: auto;
  }

  .hero-overlay {
    background: linear-gradient(
      to bottom,
      rgba(51, 51, 102, 0.78) 0%,
      rgba(51, 51, 102, 0.62) 50%,
      rgba(0, 153, 204, 0.45) 100%
    );
  }

  .hero-network {
    right: -12%;
    bottom: -4%;
    width: 78vw;
    opacity: 0.35;
  }

  .hero-cta { width: 100%; }
  .hero-cta .btn { width: 100%; }
  .hero-scroll { display: none; }

  .page-hero {
    padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
  }

  .page-hero::before { border-width: 0 90px 90px 0; }

  .section { padding: var(--space-xl) 0; }
  .section-header { margin-bottom: var(--space-lg); }

  .card-grid,
  .card-grid--3col,
  .compare-grid,
  .dual-cta,
  .form-grid { grid-template-columns: 1fr; }

  .card:hover { transform: none; }

  .dual-cta-panel {
    transform: skewX(-2deg);
  }

  .timeline { padding-left: 54px; }
  .timeline-marker { left: -54px; width: 40px; height: 38px; font-size: 0.9375rem; }

  .platform-banner { flex-direction: column; align-items: flex-start; }

  .accordion summary { font-size: var(--text-body); }
  .accordion summary::after { width: 34px; height: 34px; font-size: 1.05rem; }

  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* 固定CTAバー表示 + 本文の逃げ */
  .mobile-cta-bar { display: block; }
  body { padding-bottom: 72px; }
  .footer { padding-bottom: calc(var(--space-lg) + 72px); }
}

@media (max-width: 480px) {
  .hero-box { padding: 0.4rem 1rem; }
  .cta-title { font-size: 1.25rem; }
  .btn-lg { width: 100%; }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-copy > * { opacity: 1; }
  .reveal, .reveal-left, .reveal-right, .reveal-scale { opacity: 1; transform: none; }
}

/* ---------- Print ---------- */
@media print {
  .header,
  .mobile-nav,
  .mobile-cta-bar,
  .cta-section,
  .hero-scroll { display: none !important; }

  body { padding-bottom: 0; }
}

/* ---------- 承継の流れ（2列並行フロー） ---------- */
.flow-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  max-width: 920px;
  margin: 0 auto;
}

.flow-col-head {
  padding: 0.6rem 1rem;
  margin-bottom: var(--space-md);
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  font-weight: 700;
  color: #fff;
  transform: skewX(-3deg);
}

.flow-col-head--sell {
  background: var(--gradient-primary);
  box-shadow: 4px 4px 0 #fff, 5px 5px 0 #00cc99;
}

.flow-col-head--buy {
  background: var(--gradient-navy);
  box-shadow: var(--shadow-pop-navy);
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.flow-chip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.95rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(0, 153, 204, 0.15);
  border-left: 4px solid var(--step-c3);
  transform: skewX(-3deg);
  box-shadow: 2px 2px 0 #fff, 3px 3px 0 rgba(51, 51, 102, 0.25);
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 400;
  color: var(--color-navy);
}

.flow-chip > * {
  transform: skewX(3deg);
}

.flow-chip-num {
  min-width: 1.4em;
  text-align: right;
  font-family: var(--font-number);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.55;
}

/* ステップ帯域色（timelineと同じ5色） */
.flow-list li:nth-child(5n + 1) { border-left-color: var(--step-c1); }
.flow-list li:nth-child(5n + 2) { border-left-color: var(--step-c2); }
.flow-list li:nth-child(5n + 3) { border-left-color: var(--step-c3); }
.flow-list li:nth-child(5n + 4) { border-left-color: var(--step-c4); }
.flow-list li:nth-child(5n + 5) { border-left-color: var(--step-c5); }

@media (max-width: 768px) {
  .flow-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .flow-chip { transform: skewX(-2deg); }
}

/* ---------- フォームタブ（プラットフォーム 依頼/受諾） ---------- */
.form-tabs-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  max-width: 780px;
  margin: 0 auto var(--space-lg);
}

.form-tabs-nav label {
  padding: 0.85rem 1rem;
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-body);
  font-weight: 700;
  color: var(--color-navy);
  background: var(--color-base);
  border: 1px solid rgba(0, 153, 204, 0.25);
  border-radius: 10px;
  cursor: pointer;
  transform: skewX(-3deg);
  transition: all var(--transition-fast);
}

.form-tabs-nav label:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

#tab-request:checked ~ .form-tabs-nav label[data-tab='request'],
#tab-accept:checked ~ .form-tabs-nav label[data-tab='accept'] {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
  box-shadow: 3px 3px 0 #fff, 4px 4px 0 rgba(51, 51, 102, 0.4);
}

.form-tab-panel {
  display: none;
}

#tab-request:checked ~ .form-tab-panel[data-panel='request'],
#tab-accept:checked ~ .form-tab-panel[data-panel='accept'] {
  display: block;
}

@media (max-width: 600px) {
  .form-tabs-nav { grid-template-columns: 1fr; }
}

/* ---------- プラットフォーム ハブ図 ---------- */
.hub-figure {
  max-width: 800px;
  margin: 0 auto;
}

.hub-figure svg {
  width: 100%;
  height: auto;
}

.hub-links line {
  stroke: rgba(0, 153, 204, 0.45);
  stroke-width: 2;
  stroke-dasharray: 5 7;
  animation: hnDash 30s linear infinite;
}

.hub-node {
  animation: hnFloat 9s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.hub-node:nth-of-type(2n) { animation-duration: 11s; }
.hub-node:nth-of-type(3n) { animation-duration: 13s; }

.hub-node rect {
  fill: var(--color-navy);
  filter: drop-shadow(3px 3px 0 rgba(0, 153, 204, 0.35));
}

.hub-node text {
  fill: #fff;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
}

.hub-center rect {
  fill: url(#hubGrad);
  filter: drop-shadow(4px 4px 0 rgba(51, 51, 102, 0.45));
}

.hub-center text {
  fill: #fff;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
}

/* ---------- コラム（記事一覧・記事ページ） ---------- */
.article-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.article-card .article-date {
  font-family: var(--font-number);
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

.article-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-navy);
}

.article-card p {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

/* パンくず */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  padding: var(--space-sm) 0 0;
  font-size: var(--text-caption);
  color: rgba(255, 255, 255, 0.85);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.breadcrumb li + li::before {
  content: '›';
  margin-right: 0.5em;
  opacity: 0.7;
}

/* 記事本文 */
.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  max-width: 760px;
  margin: 0 auto var(--space-lg);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.article-meta .article-date {
  font-family: var(--font-number);
}

.article-body h2 {
  margin: var(--space-xl) 0 var(--space-sm);
  padding: 0.35rem 0 0.35rem var(--space-sm);
  border-left: 5px solid;
  border-image: linear-gradient(to bottom, #0099cc, #00cc99) 1;
  background: var(--color-base-2);
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-navy);
}

.article-body h3 {
  margin: var(--space-lg) 0 var(--space-xs);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
}

.article-body p {
  margin-bottom: 1em;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.2em;
  padding-left: 1.6em;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  margin-bottom: 0.35em;
}

.article-body .table-wrap {
  margin: var(--space-sm) 0 var(--space-md);
}

.article-body .data-table {
  min-width: 560px;
}

/* 目次 */
.article-toc {
  margin: var(--space-lg) 0;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-base-2);
  border: 1px solid rgba(0, 153, 204, 0.18);
  border-radius: 10px;
}

.article-toc-title {
  font-family: var(--font-number);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.4em;
}

.article-toc ol {
  margin: 0;
  padding-left: 1.4em;
  list-style: decimal;
  font-size: var(--text-small);
}

.article-toc a {
  color: var(--color-navy);
}

.article-toc a:hover {
  color: var(--color-primary);
}

/* 記事内CTAボックス */
.article-cta {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-navy);
  border-radius: 12px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.article-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.article-cta-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  padding: 0.2rem 0.9rem;
  transform: skewX(-5deg);
  margin-bottom: var(--space-xs);
}

.article-cta p {
  font-size: var(--text-body);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-sm);
}

.article-cta .btn {
  margin-right: var(--space-xs);
}

/* 注記・免責 */
.article-note {
  margin-top: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-base-2);
  border-radius: 8px;
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

/* 執筆者 */
.article-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(0, 153, 204, 0.18);
  border-radius: 10px;
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.article-author img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

/* 関連記事 */
.article-related {
  max-width: 760px;
  margin: var(--space-xl) auto 0;
}

.article-related h2 {
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-sm);
}