/* =========================================================
   末吉IT経営支援事務所 Web制作実績サイト
   デザイン: ミニマル・ホワイト（白×黒×アクセント青1色）
   依存なし（外部CDN・Webフォント不使用、システムフォントのみ）
   ========================================================= */
:root{
  --bg:#ffffff;
  --text:#101418;
  --muted:#6b727a;
  --line:#e6e8eb;
  --soft:#f6f7f8;
  --accent:#2554e0;
  --accent-soft:#eef2fd;
  --sans:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:2;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);z-index:50}
.head-in{display:flex;align-items:center;justify-content:space-between;height:68px;border-bottom:1px solid var(--line)}
.logo{font-size:15px;font-weight:700;letter-spacing:.06em;text-decoration:none}
.logo i{font-style:normal;color:var(--accent)}
nav{display:flex;gap:30px}
nav a{text-decoration:none;font-size:13px;letter-spacing:.1em;color:var(--muted);transition:color .2s}
nav a:hover{color:var(--accent)}
@media(max-width:640px){.head-in{flex-direction:column;align-items:flex-start;height:auto;padding:10px 0 12px;gap:6px}nav{gap:16px}nav a{font-size:12px;letter-spacing:.04em}}

/* hero */
.hero{padding:130px 0 110px}
.hero-kicker{font-size:12px;letter-spacing:.34em;color:var(--accent);margin-bottom:30px}
h1{font-size:clamp(32px,5.4vw,60px);font-weight:800;line-height:1.4;letter-spacing:.02em;max-width:18em}
h1 u{text-decoration:none;background:linear-gradient(transparent 68%,var(--accent-soft) 68%)}
.hero p.lede{margin-top:30px;max-width:33em;color:var(--muted);font-size:15px}
.hero-cta{margin-top:46px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.hint{font-size:12px;color:var(--muted);letter-spacing:.08em}
@media(max-width:640px){.hero{padding:80px 0 70px}}

/* buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;text-decoration:none;font-size:15px;letter-spacing:.1em;padding:16px 44px;border-radius:99px;transition:transform .15s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(37,84,224,.3)}

/* section common */
section{padding:100px 0}
.sec-head{margin-bottom:56px}
.sec-head span{font-size:11px;letter-spacing:.3em;color:var(--accent)}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:.04em;margin-top:10px}
@media(max-width:640px){section{padding:64px 0}.sec-head{margin-bottom:36px}}

/* works: bento grid — .wide の1件を大きく見せる */
.works-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:transform .2s,box-shadow .25s,border-color .2s}
.card:hover{transform:translateY(-5px);box-shadow:0 20px 50px rgba(16,20,24,.09);border-color:#d3d7dc}
.card.wide{grid-column:1/-1;display:grid;grid-template-columns:58fr 42fr}
.shot{aspect-ratio:16/10;position:relative;background:var(--soft);overflow:hidden}
.shot img{width:100%;height:100%;object-fit:cover;object-position:top center}
.card.wide .shot{aspect-ratio:auto;min-height:300px;border-right:1px solid var(--line)}
.card-body{padding:26px 28px 26px;display:flex;flex-direction:column;flex:1}
.card.wide .card-body{padding:40px 40px;justify-content:center}
.tags{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.tag{font-size:11px;letter-spacing:.1em;color:var(--accent);background:var(--accent-soft);padding:3px 12px;border-radius:99px}
.card h3{font-size:19px;font-weight:700;letter-spacing:.03em;line-height:1.55}
.card.wide h3{font-size:24px}
.card p{margin-top:12px;color:var(--muted);font-size:13.5px;flex:1}
.card.wide p{flex:0 1 auto}
.card-link{margin-top:20px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent);text-decoration:none;align-self:flex-start}
.card-link::after{content:" →";transition:margin-left .2s}
.card:hover .card-link::after{margin-left:6px}
@media(max-width:760px){.works-grid{grid-template-columns:1fr}.card.wide{display:flex;flex-direction:column}.card.wide .shot{aspect-ratio:16/10;min-height:0;border-right:none;border-bottom:1px solid var(--line)}.card.wide .card-body{padding:26px 28px}}

/* features */
.features{background:var(--soft)}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px 32px}
.feat .num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:15px}
.feat h3{font-size:18px;font-weight:700;margin:16px 0 10px;letter-spacing:.03em}
.feat p{font-size:13.5px;color:var(--muted)}
@media(max-width:820px){.feat-grid{grid-template-columns:1fr}}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.about-name{font-size:22px;font-weight:800;letter-spacing:.06em}
.about-en{font-size:11px;letter-spacing:.28em;color:var(--muted);margin-top:2px}
.copy{color:var(--accent);font-weight:700;font-size:15px;letter-spacing:.08em;margin:16px 0 18px}
.about-grid>div>p{color:var(--muted);font-size:14px}
dl.office{border-top:1px solid var(--line);font-size:14px}
dl.office div{display:grid;grid-template-columns:9em 1fr;border-bottom:1px solid var(--line);padding:15px 4px}
dl.office dt{color:var(--muted);letter-spacing:.06em;font-size:13px}
@media(max-width:820px){.about-grid{grid-template-columns:1fr;gap:36px}}

/* contact */
.contact{text-align:center}
.contact .box{background:var(--soft);border-radius:28px;padding:80px 32px}
.contact h2{font-size:clamp(24px,3.4vw,38px);font-weight:800;letter-spacing:.04em}
.contact p{margin:20px auto 38px;max-width:33em;color:var(--muted);font-size:14px}
.contact .addr{display:block;margin-top:18px;font-size:12px;color:var(--muted);letter-spacing:.08em}

footer{border-top:1px solid var(--line);color:var(--muted);font-size:12px;letter-spacing:.08em;text-align:center;padding:28px 16px}

/* scroll reveal（JS が動く環境でのみ有効。無効環境では常時表示） */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.js .rv.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .rv{opacity:1;transform:none;transition:none}}

/* works: 代表作（全項目）とその他の実績 */
.works-sub{font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--muted);margin:0 0 20px;display:flex;align-items:center;gap:14px}
.works-sub::after{content:"";flex:1;height:1px;background:var(--line)}
.works-sub:not(:first-of-type){margin-top:72px}
.case{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;margin-bottom:36px}
.case-top{display:grid;grid-template-columns:58fr 42fr;border-bottom:1px solid var(--line)}
.case .shot{aspect-ratio:auto;min-height:300px;border-right:1px solid var(--line)}
.case-head{padding:40px;display:flex;flex-direction:column;justify-content:center}
.case h3{font-size:24px;font-weight:700;letter-spacing:.03em;line-height:1.55}
.case-summary{margin-top:12px;color:var(--muted);font-size:14px}
.case-note{margin-top:10px;font-size:12px;color:var(--muted);line-height:1.8}
.case-detail{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;padding:14px 40px 34px}
.case-detail>div{padding:18px 0;border-bottom:1px solid var(--line)}
.case-detail>div:nth-last-child(-n+2){border-bottom:none}
.case-detail dt{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--accent);margin-bottom:4px}
.case-detail dd{font-size:14px;color:var(--text);line-height:1.9}
.case-detail a,.card-facts a{color:var(--accent);word-break:break-all}
.case-detail .case-bg{grid-column:1/-1}
.case-detail .case-point{grid-column:1/-1;background:var(--accent-soft);border:none;border-radius:14px;padding:22px 26px;margin:14px 0 8px}
.case-point dt{font-size:13px}
.case-point ul{list-style:none;display:grid;gap:10px}
.case-point li{position:relative;padding-left:1.1em;font-size:14px;line-height:1.9;color:var(--muted)}
.case-point li::before{content:"";position:absolute;left:0;top:.8em;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.case-point b{display:block;color:var(--text)}
.card-facts{margin-top:14px;flex:1;border-top:1px solid var(--line)}
.card-facts>div{padding:10px 0;border-bottom:1px solid var(--line)}
.card-facts dt{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
.card-facts dd{font-size:13.5px;color:var(--muted);line-height:1.85}
@media(max-width:760px){
  .case-top{display:flex;flex-direction:column}
  .case .shot{aspect-ratio:16/10;min-height:0;border-right:none;border-bottom:1px solid var(--line)}
  .case-head{padding:26px 24px}
  .case h3{font-size:20px}
  .case-detail{grid-template-columns:1fr;padding:6px 24px 24px}
  .case-detail>div:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .case-detail>div:last-child{border-bottom:none}
  .case-detail .case-point{padding:20px}
}