/* SAI Web Design テーマ用スタイル（すべて .sai の中だけに効きます） */

/* ---------- ベース ---------- */
.sai, .sai *, .sai *::before, .sai *::after { box-sizing: border-box; }
.sai {
  position: relative;
  width: 100%;
  overflow: hidden;
  font-family: 'Noto Sans JP', 'Jost', sans-serif;
  color: #1F3A3E;
  background: #FFFFFF;
  line-height: 1.9;
  letter-spacing: normal;
  text-align: left;
}
.sai h1, .sai h2, .sai h3, .sai p {
  margin: 0; padding: 0; border: 0; background: none;
  color: inherit; font-family: inherit; text-transform: none;
}
.sai img { max-width: none; height: auto; margin: 0; border: 0; box-shadow: none; }
.sai a { color: var(--sai-accent, #2A6A73); text-decoration: none; box-shadow: none; border: 0; }
.sai section, .sai header, .sai footer { margin: 0; }

/* ---------- 共通パーツ ---------- */
.sai .sai-label { font-family: 'Jost', sans-serif; font-size: 13px; letter-spacing: .3em; color: #4A6366; margin: 0 0 16px; }
.sai .sai-title { font-weight: 300; font-size: clamp(28px, 3.4vw, 42px); letter-spacing: .04em; margin: 0 0 56px; }
.sai .sai-wrap  { max-width: 1200px; margin: 0 auto; }
.sai .sai-sec   { max-width: 1200px; margin: 0 auto; padding: 120px clamp(24px, 6vw, 96px); }

.sai .sai-btn {
  display: inline-flex; align-items: center; min-height: 52px; padding: 0 36px;
  background: var(--sai-accent, #2A6A73); color: #FFFFFF; border: 1px solid var(--sai-accent, #2A6A73); border-radius: 999px;
  font-family: 'Jost', sans-serif; font-size: 14px; letter-spacing: .14em;
  transition: transform .3s ease, background .3s ease;
}
.sai .sai-btn:hover { transform: translateY(-2px); color: #FFFFFF; }
.sai .sai-btn--line { background: transparent; color: var(--sai-accent, #2A6A73); }
.sai .sai-btn--line:hover { color: var(--sai-accent, #2A6A73); }
.sai .sai-btn--lg { min-height: 56px; padding: 0 48px; font-size: 15px; }

.sai .sai-card { background: #FFFFFF; border-radius: 20px; transition: transform .4s ease, box-shadow .4s ease; }
.sai .sai-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(38, 48, 47, .10); }

/* ---------- ヒーロー ---------- */
.sai .sai-hero { position: relative; overflow: hidden; min-height: 780px; background: #FFFFFF; display: flex; flex-direction: column; }
.sai .sai-hbg  { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
.sai .sai-g    { transform-box: fill-box; transform-origin: center; }
.sai .sai-gb   { animation: sai-fb 18s ease-in-out infinite alternate; }
.sai .sai-gc   { animation: sai-fc 24s ease-in-out infinite alternate; }
.sai .sai-gd   { animation: sai-fd 20s ease-in-out infinite alternate; }
.sai .sai-ge1  { animation: sai-fe 12s ease-in-out infinite alternate; }
.sai .sai-ge2  { animation: sai-ff 15s ease-in-out infinite alternate; }

.sai .sai-head { position: absolute; top: 0; left: 0; right: 0; z-index: 5; display: flex; flex-wrap: wrap; gap: 16px 40px; align-items: center; justify-content: space-between; padding: 32px clamp(24px, 6vw, 96px); }
.sai .sai-logo { display: inline-flex; align-items: center; gap: 14px; font-family: 'Jost', sans-serif; font-weight: 500; font-size: 20px; letter-spacing: .18em; color: #1F3A3E; }
.sai .sai-logo img { width: 60px; height: 60px; object-fit: contain; }
.sai .sai-logo .sai-thin { font-weight: 300; }
.sai .sai-nav  { display: flex; flex-wrap: wrap; gap: 8px 36px; font-family: 'Jost', sans-serif; font-size: 14px; letter-spacing: .14em; }
.sai .sai-nav ul { display: flex; flex-wrap: wrap; gap: 8px 36px; list-style: none; margin: 0; padding: 0; }
.sai .sai-nav li { margin: 0; padding: 0; list-style: none; }
.sai .sai-nav a { padding: 10px 0; color: #1F3A3E; }
.sai .sai-nav a:hover { color: #3BA0AD; }

.sai .sai-hero-body { position: relative; z-index: 2; flex: 1; display: flex; flex-direction: column; justify-content: center; max-width: 1200px; width: 100%; margin: 0 auto; padding: 164px clamp(24px, 6vw, 96px) 160px; }
.sai .sai-eyebrow { font-family: 'Jost', sans-serif; font-weight: 300; font-size: 14px; letter-spacing: .32em; color: #3F6368; margin: 0 0 24px; }
.sai .sai-h1   { font-weight: 300; font-size: clamp(36px, 6.4vw, 84px); line-height: 1.28; letter-spacing: .04em; }
.sai .sai-lead { margin: 32px 0 0; max-width: 520px; font-weight: 300; font-size: clamp(15px, 1.5vw, 17px); color: #2E4A4E; }
.sai .sai-btns { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
.sai .sai-rise { animation: sai-rise 1.2s ease both; }
.sai .sai-r2   { animation-delay: .25s; }
.sai .sai-r3   { animation-delay: .5s; }

/* ---------- ABOUT ---------- */
.sai .sai-about { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 64px; align-items: center; }
.sai .sai-about .sai-title { margin: 0 0 28px; line-height: 1.5; }
.sai .sai-text { font-weight: 300; color: #2E4A4E; margin: 0 0 16px; }
.sai .sai-text:last-child { margin: 0; }
.sai .sai-art  { position: relative; height: 420px; border-radius: 200px 200px 24px 24px; background: #CFEAEE; overflow: hidden; }
.sai .sai-art-sun   { position: absolute; width: 260px; height: 260px; border-radius: 50%; background: #BEDD8F; left: 50%; top: 70px; transform: translateX(-50%); }
.sai .sai-art-hill1 { position: absolute; left: 0; right: 0; bottom: 0; height: 170px; background: #8DD0D9; border-radius: 100% 100% 0 0 / 60% 60% 0 0; }
.sai .sai-art-hill2 { position: absolute; left: -10%; width: 70%; bottom: 0; height: 110px; background: var(--sai-accent, #2A6A73); border-radius: 100% 100% 0 0 / 80% 80% 0 0; }

/* ---------- SERVICE ---------- */
.sai .sai-service { background: #E6F4F6; padding: 110px clamp(24px, 6vw, 96px); }
.sai .sai-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.sai .sai-service .sai-card { padding: 40px 32px; }
.sai .sai-card h3 { margin: 24px 0 12px; font-weight: 400; font-size: 20px; letter-spacing: .06em; }
.sai .sai-card p  { font-weight: 300; font-size: 15px; color: #3F5A5E; }

/* ---------- WORKS ---------- */
.sai .sai-works .sai-card { overflow: hidden; }
.sai .sai-thumb { position: relative; height: 220px; }
.sai .sai-thumb span { position: absolute; display: block; }
.sai .sai-cap { padding: 24px 28px 28px; }
.sai .sai-cap .sai-cat { font-family: 'Jost', sans-serif; font-size: 12px; letter-spacing: .2em; color: #4A6366; }
.sai .sai-cap h3 { margin: 6px 0 0; font-weight: 400; font-size: 18px; letter-spacing: normal; }

/* ---------- FLOW ---------- */
.sai .sai-flow { padding: 110px clamp(24px, 6vw, 96px); background: transparent; }
.sai .sai-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 36px; }
.sai .sai-num { font-family: 'Jost', sans-serif; font-weight: 300; font-size: 48px; line-height: 1; color: #2A8E9B; }
.sai .sai-steps h3 { margin: 16px 0 8px; font-weight: 400; font-size: 18px; }
.sai .sai-steps p  { font-weight: 300; font-size: 15px; color: #3F5A5E; }

/* ---------- CONTACT ---------- */
.sai .sai-contact { position: relative; overflow: hidden; padding: 120px clamp(24px, 6vw, 96px); text-align: center; background: #CFEAEE; }
.sai .sai-blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .8; }
.sai .sai-b2 { width: 480px; height: 480px; background: #BEDD8F; top: -160px; left: 10%; animation: sai-d2 27s ease-in-out infinite alternate; }
.sai .sai-b3 { width: 400px; height: 400px; background: #A0D9DF; bottom: -200px; right: 8%; animation: sai-d3 31s ease-in-out infinite alternate; }
.sai .sai-contact-inner { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.sai .sai-contact .sai-label { color: #2E4A4E; }
.sai .sai-contact .sai-title { margin: 0 0 24px; }
.sai .sai-contact .sai-text  { margin: 0 0 40px; }

/* ---------- FOOTER ---------- */
.sai .sai-foot { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; padding: 36px clamp(24px, 6vw, 96px); font-family: 'Jost', sans-serif; font-size: 13px; letter-spacing: .12em; color: #4A6366; }
.sai .sai-foot-logo { display: inline-flex; align-items: center; gap: 12px; }
.sai .sai-foot-logo img { width: 36px; height: 36px; object-fit: contain; }

/* ---------- アニメーション ---------- */
@keyframes sai-fb { to { transform: translate(28px, 20px) scale(1.03); } }
@keyframes sai-fc { to { transform: translate(-40px, 60px); } }
@keyframes sai-fd { to { transform: translate(50px, -30px) rotate(20deg); } }
@keyframes sai-fe { to { transform: translate(30px, -24px) scale(1.12); } }
@keyframes sai-ff { to { transform: translate(-20px, 22px) scale(.9); } }
@keyframes sai-d2 { to { transform: translate(-200px, 120px) scale(1.12); } }
@keyframes sai-d3 { to { transform: translate(-240px, -90px) scale(1.2); } }
@keyframes sai-rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .sai .sai-g, .sai .sai-blob, .sai .sai-rise { animation: none; }
}

/* ---------- 固定ページ・投稿（index.php） ---------- */
.sai .sai-page { max-width: 800px; margin: 0 auto; padding: 164px clamp(24px, 6vw, 48px) 100px; }
.sai .sai-page-title { font-weight: 300; font-size: clamp(28px, 3.4vw, 42px); letter-spacing: .04em; margin: 0 0 40px; }
.sai .sai-content p { margin: 0 0 1.4em; font-weight: 300; color: #2E4A4E; }
.sai .sai-content h2 { margin: 2em 0 .8em; font-weight: 400; font-size: 24px; }
.sai .sai-content h3 { margin: 1.8em 0 .6em; font-weight: 400; font-size: 20px; }
.sai .sai-content img { max-width: 100%; }
.sai .sai-content a { text-decoration: underline; }

/* ---------- サイト設定で変更できる要素 ---------- */
.sai .sai-card svg { color: var(--sai-accent, #2A6A73); }
.sai a.sai-card { display: block; color: inherit; }
.sai .sai-thumb { overflow: hidden; }
.sai .sai-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }