:root {
  --dao-navy: #062A4F;
  --dao-navy-2: #0E3A66;
  --dao-light: #F4F7FA;
  --dao-border: #DDE5EE;
  --dao-text: #222222;
  --dao-muted: #666666;
  --dao-white: #FFFFFF;
  --dao-accent: #2D6CDF;
  --dao-error: #C0392B;
  --dao-success: #1E7D4E;
  --dao-shadow: 0 14px 35px rgba(6, 42, 79, 0.08);
  --dao-radius: 14px;
  --dao-font: -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--dao-text); font-family: var(--dao-font); font-size: 16px; line-height: 1.9; background: var(--dao-white); letter-spacing: 0.02em; }
a { color: var(--dao-navy); text-decoration: none; }
a:hover { text-decoration: underline; }
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { left: 16px; top: 16px; z-index: 100; width: auto; height: auto; padding: 10px 14px; background: var(--dao-white); border: 2px solid var(--dao-navy); }
.dao-container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.dao-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--dao-border); }
.dao-header__inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.dao-logo { display: inline-flex; flex-direction: column; color: var(--dao-navy); text-decoration: none; line-height: 1.1; flex: 0 0 auto; }
.dao-logo:hover { text-decoration: none; }
.dao-logo__main { font-size: 29px; font-weight: 800; letter-spacing: 0.02em; }
.dao-logo__sub { margin-top: 5px; color: var(--dao-navy-2); font-size: 12px; font-weight: 600; opacity: 0.86; }
.dao-nav { display: flex; align-items: center; gap: 22px; font-size: 14px; font-weight: 700; }
.dao-nav a { position: relative; color: var(--dao-text); text-decoration: none; padding: 28px 0; white-space: nowrap; }
.dao-nav a:hover { color: var(--dao-navy); text-decoration: none; }
.dao-nav a:hover::after { content: ""; position: absolute; left: 0; right: 0; bottom: 19px; height: 3px; background: var(--dao-navy); border-radius: 999px; }
.dao-menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--dao-border); background: var(--dao-white); border-radius: 10px; cursor: pointer; }
.dao-menu-toggle span, .dao-menu-toggle span::before, .dao-menu-toggle span::after { display: block; width: 22px; height: 2px; background: var(--dao-navy); margin: 0 auto; position: relative; border-radius: 999px; }
.dao-menu-toggle span::before, .dao-menu-toggle span::after { content: ""; position: absolute; left: 0; }
.dao-menu-toggle span::before { top: -7px; }
.dao-menu-toggle span::after { top: 7px; }
.dao-hero { position: relative; overflow: hidden; background: linear-gradient(90deg, #fff 0%, #fff 45%, #eef5fb 100%); }
.dao-hero::after { content: ""; position: absolute; inset: 0; opacity: 0.75; background: radial-gradient(circle at 78% 24%, rgba(45,108,223,0.22), transparent 21%), linear-gradient(135deg, transparent 0 55%, rgba(6,42,79,0.07) 56% 57%, transparent 58%); pointer-events: none; }
.dao-hero__inner { position: relative; z-index: 1; min-height: 510px; display: grid; grid-template-columns: 1.05fr 0.95fr; align-items: center; gap: 48px; }
.dao-eyebrow { color: var(--dao-navy-2); font-size: 13px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 16px; }
.dao-hero h1 { margin: 0; color: var(--dao-navy); font-size: clamp(34px, 4vw, 52px); line-height: 1.45; letter-spacing: 0.04em; }
.dao-hero__lead { margin: 28px 0 0; font-size: 18px; line-height: 2.05; max-width: 640px; }
.dao-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 34px; }
.dao-button { display: inline-flex; align-items: center; justify-content: center; min-width: 180px; min-height: 52px; padding: 0 24px; border-radius: 8px; border: 1px solid var(--dao-navy); background: var(--dao-navy); color: var(--dao-white); font-weight: 800; text-decoration: none; box-shadow: 0 8px 18px rgba(6,42,79,0.18); cursor: pointer; font-family: inherit; font-size: 16px; }
.dao-button:hover { background: #031D38; text-decoration: none; }
.dao-button--sub { background: var(--dao-white); color: var(--dao-navy); box-shadow: none; }
.dao-button--sub:hover { background: var(--dao-light); }
.dao-hero-visual { position: relative; min-height: 340px; border-radius: 28px; background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(244,247,250,0.9)); box-shadow: var(--dao-shadow); border: 1px solid rgba(221,229,238,0.9); padding: 32px; overflow: hidden; }
.dao-visual-card { position: relative; z-index: 2; width: 70%; padding: 18px 20px; border-radius: 14px; background: rgba(255,255,255,0.86); border: 1px solid var(--dao-border); }
.dao-visual-card strong { color: var(--dao-navy); font-size: 18px; display: block; }
.dao-visual-card span { color: var(--dao-muted); font-size: 13px; }
.dao-chart { position: absolute; left: 38px; right: 38px; bottom: 56px; height: 170px; border-left: 2px solid var(--dao-border); border-bottom: 2px solid var(--dao-border); }
.dao-bar { position: absolute; bottom: 0; width: 42px; background: linear-gradient(180deg, #7BA6E8, #0E3A66); border-radius: 6px 6px 0 0; }
.dao-bar:nth-child(1){ left: 10%; height: 48px; opacity: .55; }
.dao-bar:nth-child(2){ left: 27%; height: 78px; opacity: .65; }
.dao-bar:nth-child(3){ left: 44%; height: 104px; opacity: .75; }
.dao-bar:nth-child(4){ left: 61%; height: 128px; opacity: .88; }
.dao-bar:nth-child(5){ left: 78%; height: 152px; opacity: 1; }
.dao-line { position: absolute; inset: 30px 24px 48px 24px; background: url("data:image/svg+xml,%3Csvg width='500' height='170' viewBox='0 0 500 170' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 130 C65 110 86 72 143 86 C200 100 220 28 283 44 C350 60 370 24 500 18' fill='none' stroke='%232D6CDF' stroke-width='4'/%3E%3Cpath d='M0 130 C65 110 86 72 143 86 C200 100 220 28 283 44 C350 60 370 24 500 18' fill='none' stroke='%23FF9E2C' stroke-width='2' stroke-dasharray='12 10'/%3E%3C/svg%3E") center/contain no-repeat; }
.dao-section { padding: 84px 0; }
.dao-section--light { background: var(--dao-light); }
.dao-section__head { text-align: center; margin: 0 auto 40px; max-width: 760px; }
.dao-section__head h2 { margin: 0; color: var(--dao-navy); font-size: clamp(28px, 3.2vw, 42px); line-height: 1.45; letter-spacing: 0.04em; }
.dao-section__head p { margin: 18px 0 0; color: var(--dao-muted); }
.dao-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.dao-card { background: var(--dao-white); border: 1px solid var(--dao-border); border-radius: var(--dao-radius); padding: 30px 24px; box-shadow: 0 7px 18px rgba(6,42,79,0.04); }
.dao-card__mark { color: var(--dao-navy); font-weight: 900; font-size: 28px; opacity: .22; line-height: 1; margin-bottom: 18px; }
.dao-card h3, .dao-feature h3 { margin: 0 0 12px; color: var(--dao-navy); font-size: 19px; line-height: 1.5; }
.dao-card p, .dao-feature p { margin: 0; font-size: 14px; color: var(--dao-muted); }
.dao-feature-list { display: grid; gap: 18px; }
.dao-feature { display: grid; grid-template-columns: 70px 1fr; gap: 24px; align-items: center; padding: 30px; border: 1px solid var(--dao-border); border-radius: var(--dao-radius); background: #fff; }
.dao-feature__icon { display: flex; align-items: center; justify-content: center; width: 54px; height: 54px; border-radius: 50%; color: var(--dao-white); background: var(--dao-navy); font-weight: 900; }
.dao-table-wrap { overflow-x: auto; }
.dao-table { width: 100%; border-collapse: collapse; border: 1px solid var(--dao-border); background: #fff; }
.dao-table th, .dao-table td { border: 1px solid var(--dao-border); padding: 20px 22px; text-align: left; vertical-align: top; }
.dao-table th { width: 240px; background: var(--dao-light); color: var(--dao-navy); font-weight: 800; }
.dao-policy h3, .dao-privacy h3 { margin: 34px 0 12px; color: var(--dao-navy); font-size: 22px; }
.dao-note { margin: 30px 0; padding: 28px; background: #fff; border-radius: var(--dao-radius); border: 1px solid var(--dao-border); }
.dao-note h3 { margin-top: 0; }
.dao-contact-layout { display: grid; grid-template-columns: 1fr 0.55fr; gap: 36px; align-items: start; }
.dao-form { padding: 38px; border: 1px solid var(--dao-border); border-radius: var(--dao-radius); box-shadow: var(--dao-shadow); background: #fff; }
.dao-field { margin-bottom: 22px; }
.dao-label { display: flex; gap: 8px; font-weight: 800; margin-bottom: 8px; }
.dao-required { color: var(--dao-error); font-size: 13px; }
.dao-input, .dao-select, .dao-textarea { width: 100%; border: 1px solid #C8D2DE; border-radius: 8px; padding: 14px 16px; font: inherit; background: #fff; }
.dao-textarea { min-height: 170px; resize: vertical; }
.dao-checkbox { display: flex; gap: 10px; align-items: center; font-weight: 700; }
.dao-submit { width: 100%; margin-top: 18px; }
.dao-hidden { position: absolute !important; left: -9999px !important; opacity: 0 !important; }
.dao-sidebar { padding: 30px; border: 1px solid var(--dao-border); border-radius: var(--dao-radius); background: var(--dao-light); }
.dao-sidebar h2 { margin: 0 0 18px; color: var(--dao-navy); font-size: 22px; }
.dao-check-list { margin: 0; padding: 0; list-style: none; }
.dao-check-list li { position: relative; padding-left: 28px; margin-bottom: 12px; }
.dao-check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--dao-navy); font-weight: 900; }
.dao-footer { background: linear-gradient(135deg, #052244, #062A4F 70%, #0E3A66); color: #fff; padding: 46px 0; }
.dao-footer__inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 36px; }
.dao-footer a { color: #fff; opacity: .94; }
.dao-footer__brand strong { display: block; font-size: 28px; line-height: 1; margin-bottom: 10px; }
.dao-footer__brand p { margin: 0; opacity: .9; font-size: 14px; line-height: 1.8; }
.dao-footer__nav { display: flex; flex-wrap: wrap; gap: 10px 18px; justify-content: flex-end; font-size: 14px; }
.dao-copyright { margin-top: 18px; opacity: .86; font-size: 13px; text-align: right; }
@media (max-width: 980px) {
  .dao-container { width: min(100% - 36px, 1120px); }
  .dao-menu-toggle { display: inline-flex; align-items: center; }
  .dao-nav { display: none; position: absolute; left: 18px; right: 18px; top: 78px; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border: 1px solid var(--dao-border); border-radius: 14px; box-shadow: var(--dao-shadow); padding: 10px; }
  .dao-nav.is-open { display: flex; }
  .dao-nav a { padding: 14px; border-radius: 8px; }
  .dao-nav a:hover::after { display: none; }
  .dao-nav a:hover { background: var(--dao-light); }
  .dao-hero__inner { grid-template-columns: 1fr; min-height: auto; padding: 64px 0; }
  .dao-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .dao-contact-layout { grid-template-columns: 1fr; }
  .dao-footer__inner { flex-direction: column; }
  .dao-footer__nav { justify-content: flex-start; }
  .dao-copyright { text-align: left; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  .dao-header__inner { min-height: 70px; }
  .dao-logo__main { font-size: 25px; }
  .dao-nav { top: 70px; }
  .dao-hero__inner { padding: 44px 0; }
  .dao-hero__lead { font-size: 16px; }
  .dao-actions { flex-direction: column; }
  .dao-button { width: 100%; }
  .dao-hero-visual { display: none; }
  .dao-section { padding: 58px 0; }
  .dao-grid-4 { grid-template-columns: 1fr; }
  .dao-feature { grid-template-columns: 1fr; gap: 10px; }
  .dao-table th, .dao-table td { display: block; width: 100%; }
  .dao-form { padding: 24px; }
}