:root {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: #102a20;
  background: #f5f5ed;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
.site-shell {
  min-height: 100svh;
  overflow: hidden;
  background: radial-gradient(circle at 73% 34%, #dcefd3 0, transparent 31%),
    linear-gradient(145deg, #faf9f2 0%, #eef3e9 55%, #e1ecde 100%);
}
.site-header, .hero, .promise, .site-footer { width: min(100% - 96px, 1380px); margin-inline: auto; }
.site-header { height: 104px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #173c2c21; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand img { border-radius: 12px; box-shadow: 0 5px 16px #1239261c; }
.brand-wordmark { display: flex; flex-direction: column; gap: 3px; }
.brand-wordmark strong { font-family: Georgia, serif; font-size: 22px; letter-spacing: .08em; line-height: 1; }
.brand-wordmark small { font-size: 10px; font-weight: 700; letter-spacing: .18em; }
.access-label { display: flex; align-items: center; gap: 11px; font-size: 10px; font-weight: 800; letter-spacing: .18em; color: #35684a; }
.access-dot { width: 7px; height: 7px; border-radius: 50%; background: #69a33b; box-shadow: 0 0 0 5px #70ab4730; }

.hero { min-height: min(710px, calc(100svh - 105px)); display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 36px; padding: 55px 0 80px; }
.hero-copy { position: relative; z-index: 2; animation: rise .8s both; }
.eyebrow { display: flex; align-items: center; gap: 14px; margin: 0 0 35px; color: #527452; font-size: 11px; font-weight: 800; letter-spacing: .26em; }
.eyebrow-line { width: 38px; height: 1px; background: #72996b; }
h1 { margin: 0; font-family: Georgia, "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(44px, 4.9vw, 76px); line-height: 1.34; font-weight: 700; letter-spacing: -.075em; white-space: nowrap; }
h1 span { color: #2e7747; }
.lead { margin: 30px 0 0; color: #53685a; font-size: 16px; line-height: 2; letter-spacing: .02em; }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.primary-action { min-width: 236px; min-height: 70px; padding: 10px 11px 10px 28px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: space-between; gap: 23px; background: #123c2b; color: #fff; text-decoration: none; font-size: 15px; font-weight: 800; letter-spacing: .05em; box-shadow: 0 15px 32px #123c2b2e; transition: transform .25s, box-shadow .25s, background .25s; }
.primary-action:hover { transform: translateY(-4px); background: #20543a; box-shadow: 0 21px 39px #123c2b3d; }
.primary-action:focus-visible, .tree-button:focus-visible { outline: 3px solid #1d7045; outline-offset: 5px; }
.action-arrow { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; background: #d4ef7d; color: #123c2b; font-size: 24px; font-weight: 400; line-height: 1; transition: transform .25s; }
.primary-action:hover .action-arrow { transform: rotate(45deg); }
.auth-note { margin: 0; color: #6d7e71; font-size: 11px; line-height: 1.5; font-weight: 600; white-space: nowrap; }

.hero-art { min-height: 590px; position: relative; display: flex; align-items: center; justify-content: center; animation: rise 1s .12s both; }
.art-halo { position: absolute; width: min(48vw, 680px); aspect-ratio: 1; border-radius: 50%; border: 1px solid #54825a25; box-shadow: 0 0 0 56px #54825a08, 0 0 0 115px #54825a05; transform: translate(16px, -4px); }
.art-halo:after { content: ""; position: absolute; inset: 12%; border-radius: 50%; border: 1px dashed #4d8a6425; }
.art-frame { position: relative; z-index: 1; width: min(100%, 530px); padding: 15px; background: #fffdf4; border: 1px solid #fff; box-shadow: 0 32px 90px #21472f2a, 0 2px 12px #21472f12; transform: rotate(-3deg); transition: transform .45s, box-shadow .45s; }
.art-frame:hover { transform: rotate(-1deg) translateY(-7px); box-shadow: 0 42px 100px #21472f30, 0 2px 12px #21472f12; }
.art-frame-top, .art-frame-bottom { height: 29px; display: flex; align-items: center; justify-content: space-between; color: #789077; font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.art-frame-top { padding: 0 7px 9px; }
.art-frame-bottom { height: 35px; padding: 11px 7px 0; }
.frame-dots { display: flex; gap: 5px; }
.frame-dots i { display: block; width: 5px; height: 5px; background: #aec7a8; border-radius: 50%; }
.tree-button { position: relative; display: block; width: 100%; aspect-ratio: 1; overflow: hidden; padding: 0; border: 0; background: #f6fff3; cursor: pointer; }
.tree-image { display: block; width: 100%; height: 100%; object-fit: cover; transform-origin: 50% 85%; animation: breeze 6s ease-in-out infinite; }
.tree-button:hover .tree-image { animation-duration: 3.5s; }
.tree-button.is-shaking .tree-image { animation: shake 1.1s ease-in-out both; }
.leaf { position: absolute; width: 11px; height: 19px; border-radius: 100% 0 100% 0; background: linear-gradient(150deg, #d4ef6a, #56ad36); opacity: 0; pointer-events: none; }
.leaf-1 { left: 23%; top: 33%; --dx: -65px; --dy: 95px; --rot: 180deg; }
.leaf-2 { left: 74%; top: 28%; --dx: 77px; --dy: 82px; --rot: 240deg; }
.leaf-3 { left: 60%; top: 15%; --dx: -24px; --dy: 100px; --rot: 360deg; }
.leaf-4 { left: 16%; top: 55%; --dx: 48px; --dy: 91px; --rot: 250deg; }
.leaf-5 { left: 83%; top: 52%; --dx: -46px; --dy: 86px; --rot: 320deg; }
.tree-button.is-shaking .leaf { animation: leaf-fall 1.45s ease-out both; }
.tree-button.is-shaking .leaf:nth-of-type(odd) { animation-delay: .12s; }
.mini-star { font-size: 23px; line-height: 0; color: #75a956; }
.art-note { position: absolute; z-index: 2; right: -12px; bottom: 3%; display: flex; align-items: end; justify-content: space-between; width: 185px; height: 121px; padding: 22px; border-radius: 3px; background: #d8ef85; color: #1d422d; box-shadow: 0 15px 30px #213d281c; transform: rotate(5deg); font-family: Georgia, "Yu Mincho", serif; font-size: 17px; font-weight: 700; line-height: 1.45; letter-spacing: -.04em; }
.art-note>span:last-child { font-family: sans-serif; font-size: 25px; font-weight: 400; line-height: 1; }

.promise { display: grid; grid-template-columns: 1.45fr 1fr 1fr; gap: 34px; align-items: stretch; padding: 36px 0 38px; border-top: 1px solid #173c2c2a; }
.promise-heading { display: flex; flex-direction: column; gap: 16px; }
.promise-kicker, .promise-number { color: #5c8063; font-size: 10px; letter-spacing: .2em; font-weight: 800; }
.promise-heading strong { font-family: Georgia, "Yu Mincho", serif; font-size: 20px; line-height: 1.5; letter-spacing: -.04em; }
.promise-detail { padding-left: 28px; border-left: 1px solid #173c2c2a; }
.promise-number span { color: #a8bba4; }
.promise-detail p { margin: 12px 0 0; color: #53685a; font-size: 12px; line-height: 1.85; }
.site-footer { min-height: 75px; display: flex; justify-content: space-between; align-items: center; gap: 20px; color: #819086; font-size: 9px; font-weight: 700; letter-spacing: .16em; border-top: 1px solid #173c2c16; }
.footer-separator { margin: 0 8px; color: #9bab9d; }

@keyframes rise { from { opacity: 0; transform: translateY(17px); } to { opacity: 1; transform: translateY(0); } }
@keyframes breeze { 0%, 100% { transform: rotate(-.7deg) scale(1.015); } 50% { transform: rotate(.7deg) scale(1.015); } }
@keyframes shake { 0%, 100% { transform: rotate(0) scale(1.015); } 20% { transform: rotate(3deg) scale(1.04); } 42% { transform: rotate(-3deg) scale(1.04); } 65% { transform: rotate(1.7deg) scale(1.03); } 82% { transform: rotate(-.7deg) scale(1.02); } }
@keyframes leaf-fall { 0% { opacity: 0; transform: translate(0, 0) rotate(0); } 18% { opacity: 1; } 100% { opacity: 0; transform: translate(var(--dx), var(--dy)) rotate(var(--rot)); } }
@media (max-width: 1140px) { .hero { gap: 10px; } .hero-art { min-height: 500px; } h1 { font-size: clamp(40px, 4.7vw, 62px); } }
@media (max-width: 850px) {
  .site-header, .hero, .promise, .site-footer { width: min(100% - 48px, 680px); }
  .site-header { height: 84px; }
  .hero { display: flex; flex-direction: column; align-items: stretch; gap: 18px; padding: 65px 0 66px; min-height: 0; }
  .hero-art { min-height: 0; padding: 30px 42px 55px; }
  .art-halo { width: 78%; }
  .art-frame { width: min(100%, 510px); }
  .art-note { right: 5px; bottom: 10px; }
  .promise { grid-template-columns: 1fr 1fr; }
  .promise-heading { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .site-header, .hero, .promise, .site-footer { width: calc(100% - 40px); }
  .site-header { height: 76px; }
  .brand img { width: 34px; height: 34px; }
  .brand-wordmark strong { font-size: 17px; }
  .brand-wordmark small { font-size: 9px; }
  .access-label { font-size: 8px; letter-spacing: .1em; }
  .hero { padding: 52px 0 41px; gap: 15px; }
  .eyebrow { font-size: 9px; margin-bottom: 26px; letter-spacing: .2em; }
  .eyebrow-line { width: 27px; }
  h1 { font-size: clamp(35px, 8.8vw, 53px); line-height: 1.42; white-space: normal; }
  .lead { font-size: 13px; line-height: 1.9; margin-top: 23px; }
  .hero-actions { margin-top: 30px; gap: 15px; }
  .primary-action { width: 100%; min-height: 66px; }
  .auth-note { padding-left: 5px; font-size: 10px; }
  .hero-art { padding: 32px 19px 35px; }
  .art-frame { padding: 10px; }
  .art-frame-top, .art-frame-bottom { font-size: 7px; }
  .art-note { width: 130px; height: 91px; padding: 14px; right: -6px; bottom: 6px; font-size: 12px; }
  .art-note>span:last-child { font-size: 21px; }
  .promise { display: block; padding: 30px 0; }
  .promise-heading strong { font-size: 19px; }
  .promise-detail { margin-top: 28px; padding-left: 15px; }
  .promise-detail p { font-size: 12px; }
  .site-footer { min-height: 74px; font-size: 8px; letter-spacing: .08em; }
}
@media (max-width: 360px) { .mobile-rest { display: block; } }
@media (prefers-reduced-motion: reduce) {
  .hero-copy, .hero-art, .tree-image, .tree-button.is-shaking .tree-image, .tree-button.is-shaking .leaf { animation: none; }
  .primary-action, .action-arrow, .art-frame { transition: none; }
}