:root{--deep:#1F3A35;--deeper:#16302B;--green:#157A6E;--mint:#9FD3C9;--pale:#DCEBE7;--paper:#F5F8F7;--line:#E3EAE8;--ink:#1B2421;--sub:#5B6F69;--muted:#8A9A95;--gold:#F2B544}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP","Noto Sans CJK JP","Yu Gothic",sans-serif;line-height:1.85;font-size:16px}
a{color:var(--green)}
img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.en{font-family:"Helvetica Neue",Arial,sans-serif;letter-spacing:.28em;font-size:12px;font-weight:600;color:var(--green)}
.rule{width:64px;height:4px;background:var(--gold);margin:26px 0}

/* ヘッダー */
header.top{background:var(--deep);color:#fff;position:sticky;top:0;z-index:10;box-shadow:0 1px 0 rgba(255,255,255,.06)}
header.top .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;flex:none}
.brand img{width:38px;height:38px;border-radius:9px;display:block}
.brand b{font-size:18px;letter-spacing:.08em;display:block;line-height:1.3}
.brand small{display:block;font-family:"Helvetica Neue",Arial,sans-serif;font-size:10px;letter-spacing:.3em;color:var(--mint);line-height:1.2}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:4px 22px;flex-wrap:wrap;justify-content:flex-end}
nav.main a{color:#E4EFEC;text-decoration:none;font-size:14px;padding:4px 0;border-bottom:2px solid transparent}
nav.main a:hover{color:#fff}
nav.main a[aria-current="page"]{color:#fff;border-bottom-color:var(--gold)}
nav.main a.cta{border:1px solid rgba(255,255,255,.4);border-radius:999px;padding:6px 16px;color:#fff}
nav.main a.cta:hover{background:rgba(255,255,255,.08)}
nav.main a.cta[aria-current="page"]{background:#fff;color:var(--deep);border-color:#fff}

/* はじめの大きな帯 */
.hero{background:var(--deep);color:#fff;padding:64px 0 80px;position:relative;overflow:hidden}
.hero .en{color:var(--mint)}
.hero h1{font-size:clamp(27px,4.8vw,44px);line-height:1.5;margin:14px 0 0;letter-spacing:.04em}
.hero p{max-width:660px;margin:0;color:#E4EFEC;font-size:16.5px}
.hero .cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}
.hero .split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center}
.hero .split h1{font-size:clamp(26px,3.3vw,40px)}
.nw{display:inline-block}
.shot{margin:0}
.shot .frame{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.shot .dots{display:flex;gap:6px;padding:10px 14px;background:#E9EEEC}
.shot .dots span{width:10px;height:10px;border-radius:50%;background:#C9D3D0}
.shot img{display:block;width:100%;height:auto}
.shot figcaption{margin-top:12px;font-size:13px;color:var(--mint)}
figure.wide{margin:30px 0 0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}
figure.wide img{display:block;width:100%;height:auto;border-radius:8px}
figure.wide figcaption{margin-top:10px;font-size:13px;color:var(--sub)}
.card .ico{display:block;margin-bottom:16px}
.pagehead{background:var(--deep);color:#fff;padding:48px 0 52px}
.pagehead .en{color:var(--mint)}
.pagehead h1{font-size:clamp(25px,4vw,36px);margin:10px 0 0;letter-spacing:.05em;line-height:1.5}
.pagehead p{margin:14px 0 0;color:#E4EFEC;max-width:700px}
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:999px;padding:13px 26px;font-size:15px;line-height:1.4}
.btn.main{background:#fff;color:var(--deep)}
.btn.ghost{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn.green{background:var(--green);color:#fff}
.more{display:inline-block;margin-top:22px;font-weight:700;text-decoration:none}
.more::after{content:" →"}

/* 章 */
section{padding:76px 0}
section.alt{background:var(--paper)}
h2{font-size:clamp(22px,3.4vw,30px);margin:8px 0 16px;letter-spacing:.04em;color:var(--deep);line-height:1.5}
.lead{color:var(--sub);max-width:740px;margin:0}

/* カード */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 24px}
.card .num{font-family:"Helvetica Neue",Arial,sans-serif;font-weight:700;color:var(--gold);font-size:20px;letter-spacing:.06em;display:block}
.card h3{margin:6px 0 8px;font-size:18px;color:var(--deep);line-height:1.5}
.card p{margin:0;color:var(--sub);font-size:15px}
.card ul{margin:12px 0 0;padding-left:1.2em;color:var(--sub);font-size:15px}

/* つくれるものの例 */
.examples{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.ex{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 24px}
.ex .ico{display:block;margin-bottom:14px}
.ex h3{margin:0 0 8px;font-size:18px;color:var(--deep)}
.ex p{margin:0;color:var(--sub);font-size:15px}

/* 開発中のもの */
.product{margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.product .head{background:linear-gradient(135deg,var(--deep),var(--green));color:#fff;padding:30px 30px 28px}
.tag{display:inline-block;font-size:12px;background:rgba(255,255,255,.16);border-radius:999px;padding:3px 12px;letter-spacing:.06em}
.product h3{font-size:clamp(21px,3vw,26px);margin:12px 0 6px;letter-spacing:.04em;line-height:1.5}
.product .head p{margin:0;color:#E4EFEC}
.features{display:grid;grid-template-columns:repeat(3,1fr)}
.features div{padding:24px 26px;border-top:1px solid var(--line)}
.features div+div{border-left:1px solid var(--line)}
.features .num{font-family:"Helvetica Neue",Arial,sans-serif;font-weight:700;color:var(--green);font-size:13px;letter-spacing:.2em}
.features h4{margin:6px 0 6px;font-size:17px;color:var(--deep)}
.features p{margin:0;color:var(--sub);font-size:15px}
.product .note{margin:0;padding:16px 26px;background:var(--pale);color:var(--deep);font-size:14.5px}
.who{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.who div{padding:20px 26px}
.who div+div{border-left:1px solid var(--line)}
.who b{display:block;color:var(--deep);font-size:15.5px}
.who span{color:var(--sub);font-size:14.5px}

/* 進め方 */
.steps{list-style:none;padding:0;margin:34px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.steps li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 20px;counter-increment:s}
.steps li::before{content:"0" counter(s);display:block;font-family:"Helvetica Neue",Arial,sans-serif;font-weight:700;color:var(--gold);font-size:20px;letter-spacing:.06em}
.steps b{display:block;color:var(--deep);font-size:16px;margin:6px 0 4px}
.steps span{color:var(--sub);font-size:14.5px}

/* 道具の一覧 */
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
.tools a{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 20px 18px;text-decoration:none;color:var(--ink)}
.tools a:hover{border-color:var(--mint)}
.tools b{display:block;color:var(--deep);font-size:16.5px}
.tools small{display:block;color:var(--green);font-size:12.5px;margin-top:2px}
.tools span{display:block;color:var(--sub);font-size:14.5px;margin-top:8px}

/* 分野のしるし */
.chips{list-style:none;padding:0;margin:22px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.chips li{background:var(--pale);color:var(--deep);border-radius:999px;padding:6px 16px;font-size:14.5px}

/* トドク工房について */
.two{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:start;margin-top:30px}
.two p{margin:0 0 14px}
.sign{margin-top:18px;color:var(--deep);font-weight:700}
.sign small{display:block;color:var(--muted);font-weight:400;font-size:13px}
dl.info{margin:0;border-top:1px solid var(--line)}
dl.info div{display:grid;grid-template-columns:7.5em 1fr;gap:12px;padding:14px 4px;border-bottom:1px solid var(--line)}
dl.info dt{color:var(--green);font-weight:700;font-size:14.5px}
dl.info dd{margin:0}
.timeline{list-style:none;margin:26px 0 0;padding:0;border-left:3px solid var(--pale)}
.timeline li{position:relative;padding:0 0 18px 22px}
.timeline li::before{content:"";position:absolute;left:-8px;top:8px;width:13px;height:13px;border-radius:50%;background:var(--green)}
.timeline b{display:block;color:var(--deep)}
.timeline span{color:var(--sub);font-size:15px}

/* お問い合わせ */
.contact{background:var(--deep);color:#fff;text-align:center}
.contact h2{color:#fff}
.contact .en{color:var(--mint)}
.contact p{color:#E4EFEC;margin:0 auto;max-width:760px}
.contact .rule{margin:24px auto 0}
.mail{display:inline-block;margin-top:26px;background:#fff;color:var(--deep);text-decoration:none;font-weight:700;font-size:clamp(17px,2.6vw,22px);border-radius:14px;padding:16px 30px;letter-spacing:.02em;word-break:break-all}
.mail.dark{background:var(--deep);color:#fff;margin-top:0}
.box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 28px 22px;margin-top:30px}
.box h3{margin:0 0 10px;color:var(--deep);font-size:18px}
.box ul{margin:0;padding-left:1.2em;color:var(--sub)}
.box p{margin:0;color:var(--sub)}
.center{text-align:center}

/* 足もと */
footer{background:var(--deeper);color:#B7CBC6;font-size:13.5px;padding:34px 0}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px}
footer a{color:#DCEBE7}
footer ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 18px}
footer .name{color:#fff;font-weight:700;letter-spacing:.06em}

@media (max-width:900px){
  header.top{position:static}
  header.top .bar{flex-direction:column;align-items:flex-start;gap:10px}
  nav.main ul{justify-content:flex-start;gap:4px 18px}
  .cards,.tools,.examples{grid-template-columns:1fr 1fr}
  .features,.who{grid-template-columns:1fr}
  .features div+div,.who div+div{border-left:0;border-top:1px solid var(--line)}
  .steps{grid-template-columns:1fr 1fr}
  .two{grid-template-columns:1fr;gap:28px}
  .hero .split{grid-template-columns:1fr;gap:36px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .brand b{font-size:17px}
  nav.main a{font-size:13.5px}
  section{padding:56px 0}
  .hero{padding:44px 0 58px}
  .pagehead{padding:36px 0 40px}
  .cards,.tools,.steps,.examples{grid-template-columns:1fr}
  .product .head{padding:24px 20px}
  .features div,.who div{padding:18px 20px}
  .product .note{padding:14px 20px}
  .box{padding:22px 20px 18px}
  dl.info div{grid-template-columns:1fr;gap:2px}
}