/* メモ: ページ全体の色・文字・余白、各セクションのレイアウト、レスポンシブ表示や動きを定義します。 */
:root{--bg:#f4f5f6;--bg2:#fff;--ink:#14181f;--sub:#5d6674;--line:#dfe3e8;--accent:#1f6fe0;--navy:#0b2e5c;
box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0e1116;--bg2:#161b22;--ink:#eef1f5;--sub:#9aa4b2;--line:#262e38;--navy:#9ec3f2}}
:root[data-theme="dark"]{--bg:#0e1116;--bg2:#161b22;--ink:#eef1f5;--sub:#9aa4b2;--line:#262e38;--navy:#9ec3f2}
html{scroll-behavior:smooth;scroll-padding-top:calc(60px + env(safe-area-inset-top,0px));height:100%}
*{box-sizing:border-box}
html,body{overflow-x:clip;max-width:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;line-height:1.85;overflow-x:hidden;min-height:100%}
img,video{display:block;max-width:100%}
.wrap{max-width:1100px;margin:0 auto;padding:0 6vw}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:700;margin-bottom:14px}
h2{font-size:clamp(26px,4vw,44px);line-height:1.5;margin:0 0 20px;font-weight:900}
p{color:var(--sub);margin:0 0 14px;max-width:38em}
/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:30;display:flex;justify-content:space-between;align-items:center;padding:calc(10px + env(safe-area-inset-top,0px)) 6vw 10px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transform:translateY(-110%);transition:transform .6s cubic-bezier(.22,.8,.3,1)}
nav.show{transform:none}
nav img{height:30px;filter:var(--logo-f,none)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--logo-f:invert(1)}}
:root[data-theme="dark"]{--logo-f:invert(1)}
nav div a{color:var(--ink);text-decoration:none;font-size:13px;font-weight:700;margin-left:22px}
nav a:focus-visible,.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:620px){nav div a:nth-child(n+3){display:none}}
/* hero */
.hero{position:relative;height:100svh;min-height:420px;background:#dfe2e4;overflow:hidden}
.hero video{width:100%;height:100%;object-fit:cover}
.cue{position:absolute;left:50%;bottom:calc(26px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);font-size:11px;letter-spacing:.3em;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.5);opacity:0;animation:cue 1s 4s forwards;text-align:center}
.cue:after{content:"";display:block;width:1px;height:38px;margin:10px auto 0;background:#fff;animation:ln 1.8s ease-in-out infinite}
@keyframes cue{to{opacity:1}}@keyframes ln{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
/* statement */
.statement{padding:22vh 0 16vh;text-align:left}
.statement h2{font-size:clamp(30px,6vw,72px);line-height:1.45;margin:0}
.statement h2 span{display:block}
.statement p{margin-top:34px;font-size:clamp(15px,1.6vw,18px)}
/* reveal */
.rv{opacity:0;transform:translateX(var(--fx,0px)) translateY(var(--fy,18px));transition:opacity .9s ease,transform .9s cubic-bezier(.22,.8,.3,1)}
.rv.on{opacity:1;transform:none}
.fl{--fx:-60px;--fy:0px}.fr{--fx:60px;--fy:0px}
@media(max-width:620px){.fl{--fx:-24px}.fr{--fx:24px}}
/* video stage */
.stage{background:var(--bg2);padding:90px 0 100px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.vbox{position:relative;border-radius:16px;overflow:hidden;background:#111;aspect-ratio:16/9;box-shadow:0 30px 60px -30px rgba(0,0,0,.35)}
.vbox video{width:100%;height:100%;object-fit:cover}
.cap{position:absolute;left:0;right:0;bottom:0;padding:48px 28px 24px;background:linear-gradient(0deg,rgba(0,0,0,.65),transparent);color:#fff}
.cap b{display:block;font-size:12px;letter-spacing:.2em;opacity:.8}
.cap span{display:block;font-size:clamp(18px,3vw,30px);font-weight:900;line-height:1.5;transition:opacity .4s}
.dots{display:flex;gap:8px;margin-top:14px}
.dots i{width:28px;height:3px;border-radius:2px;background:rgba(255,255,255,.35);transition:background .3s}
.dots i.on{background:#fff}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:44px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}
.steps b{display:block;font-size:13px;color:var(--accent);letter-spacing:.14em}
.steps h3{font-size:19px;margin:6px 0 6px}
.steps p{font-size:14px;margin:0}
/* product */
.prod{padding:110px 0}
.pgrid{display:grid;grid-template-columns:.8fr 1.2fr;gap:6vw;align-items:center}
@media(max-width:820px){.pgrid{grid-template-columns:1fr}}
.pimg{background:linear-gradient(180deg,#e6e8ea,#f4f5f6);border-radius:16px;padding:20px 20px 0;overflow:hidden}
:root[data-theme="dark"] .pimg{background:#1a2029}
.pimg img{width:100%;max-width:340px;margin:0 auto;-webkit-mask-image:linear-gradient(180deg,#000 88%,transparent);mask-image:linear-gradient(180deg,#000 88%,transparent)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chips span{font-size:13px;font-weight:700;border:1px solid var(--line);background:var(--bg2);border-radius:999px;padding:6px 16px}
.note{margin-top:26px;border-left:3px solid var(--accent);padding-left:16px;font-size:13.5px}
/* numbers */
.nums{background:var(--navy);color:#fff;padding:100px 0}
:root[data-theme="dark"] .nums,:root:not([data-theme="light"]) .nums{--n:1}
.nums h2{color:#fff}
.ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:40px}
@media(max-width:760px){.ngrid{grid-template-columns:1fr}}
.ngrid b{display:block;font-size:clamp(46px,7vw,84px);font-weight:900;line-height:1.1;font-variant-numeric:tabular-nums;white-space:nowrap}
.ngrid small{display:block;font-size:12.5px;letter-spacing:.06em;color:#bcd3f2;margin-top:6px}
.ngrid p{color:#cfe0f7;font-size:13.5px;margin-top:8px}
.nums .eyebrow{color:#8fbdff}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .nums{background:#122a4a}}
/* why */
.why{padding:110px 0}
.four{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 8px}
.four span{background:var(--bg2);border:1px solid var(--line);border-radius:999px;padding:8px 20px;font-weight:700;font-size:14px}
/* story */
.story{padding:100px 0;background:var(--bg2);border-top:1px solid var(--line)}
.photos{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px;margin-top:34px}
@media(max-width:760px){.photos{grid-template-columns:1fr 1fr}.photos figure:first-child{grid-column:1/3}}
.photos figure{margin:0;border-radius:12px;overflow:hidden;position:relative;aspect-ratio:4/5;background:#ccc}
.photos figure:first-child{aspect-ratio:1}
.photos img{width:100%;height:100%;object-fit:cover}
.photos figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 10px;font-size:12.5px;color:#fff;background:linear-gradient(0deg,rgba(0,0,0,.6),transparent)}
.tl{margin-top:50px;border-left:2px solid var(--line);padding-left:24px}
.tl div{margin-bottom:22px}
.tl b{color:var(--accent);font-size:14px}
.tl p{margin:2px 0 0;color:var(--ink);font-size:15px}
.people{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;max-width:640px}
@media(max-width:560px){.people{grid-template-columns:1fr}}
.people b{font-size:18px}.people small{color:var(--accent);font-weight:700}
.people p{font-size:13.5px;margin:6px 0 0}

/* works */
.works{padding:110px 0}
.wlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px;margin-top:34px}
.wc{all:unset;box-sizing:border-box;cursor:pointer;display:block;background:var(--bg2);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:transform .35s,box-shadow .35s}
.wc:hover{transform:translateY(-6px);box-shadow:0 22px 40px -24px rgba(0,0,0,.4)}
.wc:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wm{aspect-ratio:16/10;background:linear-gradient(135deg,#0b2e5c,#1f6fe0);display:grid;place-items:center;color:#fff;font-weight:900;font-size:28px;overflow:hidden}
.wm{position:relative}.wm img,.wm video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s}.wm img[data-fit="contain"]{object-fit:contain;background:#e8eefb}.wm img[data-fit="top"]{object-position:50% 6%}
.wc:hover .wm img{transform:scale(1.05)}
.wb{padding:18px 20px 22px}
.wb small{color:var(--accent);font-weight:700;font-size:12px;letter-spacing:.08em}
.wb h3{margin:4px 0 6px;font-size:18px;line-height:1.5;color:var(--ink)}
.wb p{margin:0;font-size:13.5px;color:var(--sub)}
dialog{border:0;border-radius:16px;padding:0;max-width:min(680px,92vw);width:100%;background:var(--bg2);color:var(--ink)}
dialog::backdrop{background:rgba(8,12,18,.6);backdrop-filter:blur(4px)}
dialog .wm{aspect-ratio:16/9}
.dt{padding:24px 28px 30px}
.dt h3{margin:4px 0 12px;font-size:22px}
.dt p{font-size:15px;max-width:none}
.dt a{color:var(--accent);font-weight:700}
.dx{position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:50%;border:0;background:rgba(0,0,0,.55);color:#fff;font-size:20px;cursor:pointer}
/* road + contact */
.road{padding:100px 0}
.rows{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}
@media(max-width:760px){.rows{grid-template-columns:1fr}}
.rows div{border-top:3px solid var(--navy);padding-top:14px}
.rows small{color:var(--sub)}.rows h3{margin:2px 0 6px;font-size:18px}.rows p{font-size:13.5px}
.ask{margin-top:50px;background:var(--navy);color:#fff;border-radius:16px;padding:44px 6vw}
.ask h3{font-size:clamp(19px,2.6vw,28px);line-height:1.7;margin:0 0 12px}
.ask p{color:#cfe0f7;font-size:14px}
.btn{display:inline-block;margin-top:14px;background:#fff;color:#0b2e5c;font-weight:700;padding:13px 28px;border-radius:999px;text-decoration:none;font-size:14.5px}
footer{padding:50px 6vw calc(50px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--line);font-size:13px;color:var(--sub)}
footer .fi{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer img{height:34px;margin-bottom:12px;filter:var(--logo-f,none)}
footer a{color:var(--accent)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}nav{transform:none}.cue{opacity:1}}