/* ============================================================
   OKII LAB — okii-lab.com
   Deep-sea navy × Okinawan sun orange / 3D scroll LP
   ============================================================ */

:root{
  --bg0:      #050810;
  --bg1:      #081120;
  --deep:     #0B5F8F;
  --cyan:     #7FD8FF;
  --cyan-2:   #38BDF8;
  --orange:   #FF8C42;
  --coral:    #FF6B81;
  --green:    #5CFFB2;
  --fg:       #F2F8FF;
  --muted:    #8CA3B8;
  --line:     rgba(127,216,255,.14);
  --card:     rgba(10, 22, 40, .55);
  --glass:    rgba(6, 13, 26, .72);
  --font-jp:  "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-en:  "Space Grotesk", var(--font-jp);
  --font-mono:"IBM Plex Mono", ui-monospace, monospace;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
html:focus-within{ scroll-behavior:smooth; }
body{
  background:var(--bg0);
  color:var(--fg);
  font-family:var(--font-jp);
  font-weight:400;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--orange); color:#0A0A0A; }

/* --- scrollbar --- */
::-webkit-scrollbar{ width:10px; }
::-webkit-scrollbar-track{ background:var(--bg0); }
::-webkit-scrollbar-thumb{ background:#15304a; border-radius:99px; border:2px solid var(--bg0); }
::-webkit-scrollbar-thumb:hover{ background:var(--deep); }

.mono{ font-family:var(--font-mono); letter-spacing:.16em; }

/* ============ 3D canvas & overlays ============ */
#bg{
  position:fixed; inset:0;
  width:100%; height:100%;
  z-index:0;
  display:block;
}
.vignette{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 115%, rgba(11,95,143,.22), transparent 55%),
    radial-gradient(80% 60% at 85% -10%, rgba(255,140,66,.10), transparent 60%),
    radial-gradient(150% 150% at 50% 50%, transparent 55%, rgba(3,6,12,.72) 100%);
}
.noise{
  position:fixed; inset:0; z-index:1; pointer-events:none; opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ============ Loader ============ */
.loader{
  position:fixed; inset:0; z-index:99;
  background:var(--bg0);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px;
  transition:opacity .7s ease, visibility .7s;
}
.loader.done{ opacity:0; visibility:hidden; }
.loader-mark{ width:110px; }
.loader-mark .ring{ fill:none; stroke-dasharray:164; stroke-dashoffset:164; animation:draw 1.6s ease forwards; }
.loader-mark .ring-a{ stroke:var(--cyan); }
.loader-mark .ring-b{ stroke:var(--orange); animation-delay:.25s; }
@keyframes draw{ to{ stroke-dashoffset:0; } }
.loader-text{ font-size:12px; color:var(--muted); letter-spacing:.5em; animation:pulse 1.6s ease infinite; }
@keyframes pulse{ 50%{ opacity:.35; } }

/* ============ Header ============ */
.site-head{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px clamp(20px, 4vw, 48px);
  transition:background .4s ease, border-color .4s ease, padding .4s ease;
  border-bottom:1px solid transparent;
}
.site-head.scrolled{
  background:rgba(5,8,16,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  padding-top:12px; padding-bottom:12px;
}
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--fg); }
.brand-mark{ width:44px; flex:none; }
.brand-name{ font-family:var(--font-en); font-weight:700; letter-spacing:.22em; font-size:15px; }
.head-nav{ display:flex; align-items:center; gap:clamp(14px, 2.4vw, 30px); }
.head-nav a{
  color:var(--muted); text-decoration:none; font-size:13.5px; font-weight:500;
  letter-spacing:.08em; transition:color .25s;
}
.head-nav a:hover{ color:var(--cyan); }
.head-nav .head-cta{
  color:var(--bg0); background:var(--orange);
  padding:8px 18px; border-radius:99px; font-weight:700;
  transition:transform .25s, box-shadow .25s;
}
.head-nav .head-cta:hover{ color:var(--bg0); transform:translateY(-2px); box-shadow:0 6px 24px rgba(255,140,66,.35); }

/* ============ Dots nav ============ */
.dots{
  position:fixed; right:22px; top:50%; transform:translateY(-50%);
  z-index:40; display:flex; flex-direction:column; gap:14px;
}
.dots a{ width:10px; height:10px; display:grid; place-items:center; }
.dots a span{
  width:6px; height:6px; border-radius:50%;
  background:rgba(140,163,184,.5);
  transition:all .35s ease;
}
.dots a.active span{ background:var(--orange); box-shadow:0 0 12px rgba(255,140,66,.8); transform:scale(1.5); }

/* ============ Layout ============ */
main{ position:relative; z-index:2; }
.sec{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center;
  padding:clamp(96px, 14vh, 150px) clamp(22px, 6vw, 72px);
}
.wrap{ width:min(1120px, 100%); margin-inline:auto; }
.wrap.narrow{ width:min(880px, 100%); }
.wrap.center{ text-align:center; }

/* ============ Typography ============ */
h1{
  font-size:clamp(30px, 5.2vw, 62px);
  font-weight:900; line-height:1.26; letter-spacing:.01em;
  margin:26px 0 22px;
  text-shadow:0 2px 40px rgba(2,7,16,.7);
}
h2{
  font-size:clamp(28px, 4.6vw, 52px);
  font-weight:900; line-height:1.3; letter-spacing:.02em;
  margin:16px 0 22px;
  text-shadow:0 2px 34px rgba(2,7,16,.65);
}
h3{ font-family:var(--font-en); font-weight:700; letter-spacing:.03em; }
.grad{
  background:linear-gradient(100deg, var(--cyan) 0%, var(--cyan-2) 35%, var(--orange) 80%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.eyebrow{ font-size:11.5px; color:var(--cyan); opacity:.9; }
.secno{ font-size:12px; color:var(--orange); }
.lead{ font-size:clamp(15px, 1.8vw, 19px); color:#CBDCEB; max-width:36em; }
.lead strong{ color:var(--cyan); font-weight:700; }
.sub{ font-size:clamp(14.5px, 1.7vw, 18px); color:#C2D4E4; max-width:40em; margin-bottom:6px; }
.sub strong{ color:var(--cyan); font-weight:700; }
.body{ color:#C6D6E4; font-size:clamp(14.5px, 1.6vw, 17px); max-width:40em; margin-bottom:1.2em; }
.body strong{ color:var(--cyan); font-weight:700; }
.body em, .sub em{ font-style:normal; color:var(--orange); }

/* ============ Buttons ============ */
.cta{ display:flex; gap:16px; flex-wrap:wrap; margin-top:34px; }
.btn{
  display:inline-block; text-decoration:none; font-weight:700; font-size:14.5px;
  letter-spacing:.06em; padding:14px 30px; border-radius:99px;
  transition:transform .25s ease, box-shadow .25s ease, background .25s, color .25s, border-color .25s;
}
.btn.solid{ background:var(--orange); color:#0A0A0A; box-shadow:0 8px 30px rgba(255,140,66,.24); }
.btn.solid:hover{ transform:translateY(-3px); box-shadow:0 12px 38px rgba(255,140,66,.44); }
.btn.ghost{
  color:var(--cyan); border:1px solid rgba(127,216,255,.4);
  background:rgba(127,216,255,.06);
}
.btn.ghost:hover{ transform:translateY(-3px); border-color:var(--cyan); background:rgba(127,216,255,.12); }
.btn.big{ font-size:clamp(15px, 2.4vw, 20px); padding:18px 42px; font-family:var(--font-mono); letter-spacing:.05em; }

/* ============ Glass panel ============ */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:20px;
  backdrop-filter:blur(16px) saturate(1.1);
  -webkit-backdrop-filter:blur(16px) saturate(1.1);
  box-shadow:0 24px 70px rgba(2,7,16,.5);
}

/* ============ Hero ============ */
.hero{ min-height:116vh; }
.hero-svc{ margin-top:20px; font-size:11.5px; color:var(--muted); }
.scroll-cue{
  position:absolute; bottom:34px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-size:10.5px; color:var(--muted);
}
.scroll-cue i{
  width:1px; height:52px; display:block;
  background:linear-gradient(var(--cyan), transparent);
  animation:cue 2s ease infinite;
}
@keyframes cue{ 0%{ transform:scaleY(0); transform-origin:top; } 45%{ transform:scaleY(1); transform-origin:top; } 55%{ transform:scaleY(1); transform-origin:bottom; } 100%{ transform:scaleY(0); transform-origin:bottom; } }

/* ============ Marquee / Trust ticker ============ */
.marquee{
  position:relative; z-index:2; overflow:hidden;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:16px 0; background:rgba(5,8,16,.55); backdrop-filter:blur(6px);
}
.marquee-track{ display:flex; white-space:nowrap; width:max-content; animation:marquee 34s linear infinite; }
.marquee-track span{ font-size:13px; color:var(--muted); padding-right:2em; }
.marquee.trust .marquee-track span{ color:#B9CCDC; }
@keyframes marquee{ to{ transform:translateX(-50%); } }

/* ============ Pain（痛点） ============ */
.pain-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:22px; margin-top:40px;
}
.pain-col{ padding:32px 30px; }
.pain-head{ font-size:12px; color:var(--cyan); display:flex; align-items:center; gap:10px; margin-bottom:20px; }
.pain-dot{ width:8px; height:8px; border-radius:50%; background:var(--orange); box-shadow:0 0 10px rgba(255,140,66,.7); flex:none; }
.checklist{ list-style:none; display:flex; flex-direction:column; gap:15px; }
.checklist li{
  position:relative; padding-left:34px;
  font-size:14.5px; color:#D3E2F0; line-height:1.65;
}
.checklist li::before{
  content:""; position:absolute; left:0; top:2px;
  width:20px; height:20px; border-radius:5px;
  background:
    linear-gradient(rgba(255,107,129,.16), rgba(255,107,129,.16)),
    var(--bg1);
  border:1px solid rgba(255,107,129,.5);
}
.checklist li::after{
  content:"!"; position:absolute; left:0; top:2px;
  width:20px; height:20px; display:grid; place-items:center;
  font-family:var(--font-mono); font-size:12px; font-weight:700; color:var(--coral);
}

/* ============ Feature（サービス大型デモ） ============ */
.feature-grid{
  display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:clamp(24px, 4vw, 48px); align-items:center; margin-top:34px;
}
.feature-grid.rev .feature-media{ order:2; }
.feature-media{
  position:relative; border-radius:20px; overflow:hidden;
  border:1px solid var(--line);
  min-height:clamp(240px, 44vh, 440px); height:100%;
  background:
    radial-gradient(120% 130% at 50% 0%, rgba(11,95,143,.35), transparent 70%),
    linear-gradient(180deg, #0A1626, #060B14);
  box-shadow:0 24px 70px rgba(2,7,16,.55);
}
.feature-media video{
  position:absolute; inset:0;
  width:100%; height:100%; object-fit:contain; display:block; background:#060B14;
}
.media-tag{
  position:absolute; top:14px; left:14px; z-index:2;
  font-size:9.5px; color:var(--cyan); letter-spacing:.18em;
  background:rgba(5,8,16,.72); border:1px solid rgba(127,216,255,.35);
  padding:5px 12px; border-radius:99px; backdrop-filter:blur(6px);
}
.feature-body{ padding:clamp(26px, 3.4vw, 40px); }
.svc-head{ display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:16px; }
.badge{ font-size:10px; padding:5px 12px; border-radius:99px; letter-spacing:.14em; white-space:nowrap; }
.badge.live{ color:var(--green); border:1px solid rgba(92,255,178,.35); background:rgba(92,255,178,.07); }
.badge.beta{ color:var(--orange); border:1px solid rgba(255,140,66,.4); background:rgba(255,140,66,.07); }
.card-domain{ font-size:10.5px; color:var(--muted); }
.svc-title{ font-family:var(--font-jp); font-size:clamp(28px,4vw,40px); font-weight:900; display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin:0; text-shadow:none; }
.svc-en{ font-family:var(--font-en); font-size:13px; color:var(--muted); font-weight:500; letter-spacing:.2em; }
.svc-tag{ color:var(--cyan); font-size:clamp(15px,1.9vw,19px); font-weight:700; margin:10px 0 16px; }
.svc-desc{ font-size:14.5px; color:#C6D6E4; line-height:1.85; }
.svc-desc strong{ color:var(--orange); font-weight:700; }
.bene{ list-style:none; display:flex; flex-direction:column; gap:11px; margin:22px 0; }
.bene li{ position:relative; padding-left:30px; font-size:14px; color:#DCE9F5; line-height:1.6; }
.bene li::before{
  content:""; position:absolute; left:0; top:3px;
  width:19px; height:19px; border-radius:50%;
  background:rgba(92,255,178,.12); border:1px solid rgba(92,255,178,.55);
}
.bene li::after{
  content:""; position:absolute; left:6px; top:8px;
  width:6px; height:10px; border:solid var(--green); border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.flow{
  list-style:none; display:flex; flex-wrap:wrap; align-items:center; gap:8px 6px;
  margin:20px 0 4px; padding:16px 18px;
  border:1px dashed var(--line); border-radius:14px; background:rgba(127,216,255,.03);
}
.flow li{ font-size:11.5px; color:var(--cyan); letter-spacing:.05em; }
.flow li:not(:last-child)::after{ content:"→"; color:var(--muted); margin-left:8px; }
.proof{ display:flex; flex-wrap:wrap; gap:8px; margin:18px 0 26px; }
.proof-badge{
  font-size:10px; color:#AFC4D6; letter-spacing:.06em; line-height:1.4;
  border:1px solid var(--line); background:rgba(10,22,40,.5);
  padding:6px 12px; border-radius:99px;
}
.feature-body .btn.solid{ margin-top:4px; }

/* ============ How it works（導入の流れ） ============ */
.how-grid{ display:grid; grid-template-columns:1fr 1fr; gap:22px; margin-top:38px; }
.how-col{ padding:30px 28px; }
.how-name{ font-size:12px; color:var(--orange); margin-bottom:20px; letter-spacing:.14em; }
.steps{ list-style:none; display:flex; flex-direction:column; gap:16px; }
.steps li{ display:flex; align-items:flex-start; gap:16px; }
.step-n{
  flex:none; width:30px; height:30px; border-radius:50%;
  display:grid; place-items:center; font-size:13px; font-weight:700;
  color:var(--cyan); border:1px solid rgba(127,216,255,.4); background:rgba(127,216,255,.06);
}
.step-t{ font-size:14px; color:#D3E2F0; line-height:1.55; padding-top:3px; }

/* ============ Why Okii Lab（選ばれる理由） ============ */
.why-chips{ list-style:none; display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:34px 0; }
.why-chips li{
  border:1px solid var(--line); border-left:3px solid var(--orange);
  border-radius:12px; padding:18px 20px; background:var(--card); backdrop-filter:blur(10px);
  font-size:13px; color:#B9CCDC; line-height:1.6;
}
.why-chips li:nth-child(2){ border-left-color:var(--cyan); }
.why-chips li:nth-child(3){ border-left-color:var(--coral); }
.why-chips li:nth-child(4){ border-left-color:var(--cyan-2); }
.why-chips b{ display:block; font-family:var(--font-en); font-size:16px; color:var(--fg); font-weight:700; margin-bottom:6px; letter-spacing:.02em; }

.founder-box{
  display:flex; gap:34px; align-items:flex-start;
  padding:38px 36px; margin-top:6px;
}
.founder-mark{ flex:none; width:110px; opacity:.9; }
.founder-body{ flex:1; min-width:0; }
.cinfo div{
  display:flex; gap:20px; align-items:baseline;
  padding:11px 0; border-bottom:1px solid var(--line);
}
.cinfo div:first-child{ padding-top:0; }
.cinfo dt{ flex:0 0 92px; font-size:10.5px; color:var(--orange); }
.cinfo dd{ font-size:14px; color:#C6D6E4; }
.ceo-note{ margin-top:22px; font-size:13.5px; color:var(--muted); line-height:2; }
.ceo-note em{ font-style:normal; color:var(--cyan); font-weight:700; }
.ceo-note .mono{ display:block; margin-top:8px; font-size:10.5px; color:var(--cyan); }

/* ============ Contact / Footer ============ */
.contact{ min-height:108vh; }
.contact::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(85% 75% at 50% 55%, rgba(5,8,16,.8), rgba(5,8,16,.35) 62%, transparent 82%);
}
.contact .wrap{ position:relative; }
.contact .body{ margin-inline:auto; }
.contact .btn.big{ margin-top:14px; }
.mail-plain{ margin-top:16px; font-size:12.5px; color:var(--muted); }
.foot{ margin-top:96px; border-top:1px solid var(--line); padding-top:40px; }
.foot-services{ font-size:10.5px; color:var(--muted); margin-bottom:16px; }
.copyright{ font-size:10.5px; color:#5E7488; }

/* ============ Reveal animation ============ */
.reveal{
  opacity:0; transform:translateY(30px);
  transition:opacity .95s cubic-bezier(.2,.65,.25,1), transform .95s cubic-bezier(.2,.65,.25,1);
}
.reveal.d1{ transition-delay:.08s; }
.reveal.d2{ transition-delay:.18s; }
.reveal.d3{ transition-delay:.28s; }
.reveal.d4{ transition-delay:.4s; }
.reveal.in{ opacity:1; transform:none; }

/* ============ Responsive ============ */
.sp{ display:none; }
@media (max-width: 900px){
  .feature-grid, .feature-grid.rev{ grid-template-columns:1fr; }
  .feature-grid.rev .feature-media{ order:0; }
  .feature-media{ min-height:clamp(220px, 52vw, 360px); }
}
@media (max-width: 860px){
  .head-nav a:not(.head-cta){ display:none; }
  .dots{ display:none; }
  .pain-grid, .how-grid, .why-chips{ grid-template-columns:1fr; }
  .founder-box{ flex-direction:column; gap:20px; }
  .founder-mark{ width:84px; }
  .sp{ display:inline; }
  .hero{ min-height:102vh; }
  .cta .btn{ flex:1 1 auto; text-align:center; }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .marquee-track{ animation:none; }
  .scroll-cue i{ animation:none; }
  .reveal{ transition:none; opacity:1; transform:none; }
}