/* ============================================================
   AI Adamskun — Landing (landing.css)
   薄い緑ベース / 濃い緑ボタン。りんごの木の相棒の世界。
   Signature: 幹から4本の枝が伸びて専門AIの実がなる "family tree"。
   ============================================================ */

:root{
  --bg:#E9F5E4;
  --bg-2:#F4FAEF;
  --paper:#FFFFFF;
  --leaf:#2E7D32;        /* ボタン・主アクセント */
  --leaf-deep:#1B5E20;
  --leaf-ink:#0E3B14;
  --sprout:#7FC24E;      /* 明るい若葉 */
  --sprout-soft:#C9E9AE;
  --bark:#E0913F;        /* 幹の色（暖色差し） */
  --bark-soft:#F6D9B4;
  --apple:#E5484D;       /* りんごの赤 */
  --ink:#20321A;
  --ink-2:#3E5433;
  --mist:#5E7A52;
  --line:#CFE6C4;
  --line-soft:#E1F0D8;

  --jp:"Noto Sans JP",system-ui,"Hiragino Kaku Gothic ProN",sans-serif;
  --round:"Zen Maru Gothic",var(--jp);
  --brand:"Baloo 2","Zen Maru Gothic",var(--jp);
  --mono:"Space Mono",ui-monospace,monospace;

  --wrap:1180px;
  --r:22px;
  --shadow:0 26px 60px -34px rgba(30,90,40,.45);
  --shadow-sm:0 12px 30px -20px rgba(30,90,40,.5);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-family:var(--jp);line-height:1.75;
  background:
    radial-gradient(1200px 700px at 88% -8%, color-mix(in srgb,var(--sprout) 26%,transparent), transparent 60%),
    radial-gradient(900px 640px at 4% 4%, color-mix(in srgb,var(--leaf) 12%,transparent), transparent 55%),
    var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}

/* eyebrow / headings */
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--leaf);display:inline-flex;align-items:center;gap:9px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--leaf);border-radius:2px}
h1,h2,h3{font-family:var(--round);line-height:1.28;margin:0;color:var(--ink);font-weight:900}
.lead{color:var(--ink-2);font-size:clamp(15px,1.5vw,17px)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-family:var(--round);
  border-radius:999px;padding:15px 26px;font-size:15px;transition:.18s;border:2px solid transparent;cursor:pointer}
.btn.primary{background:var(--leaf);color:#fff;box-shadow:0 14px 26px -12px color-mix(in srgb,var(--leaf) 75%,transparent)}
.btn.primary:hover{background:var(--leaf-deep);transform:translateY(-2px)}
.btn.ghost{background:#fff;color:var(--leaf-deep);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--leaf);transform:translateY(-2px)}
.btn.lg{padding:18px 34px;font-size:16.5px}

/* ============== NAV ============== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid var(--line-soft)}
.nav-in{max-width:var(--wrap);margin:0 auto;padding:12px 22px;display:flex;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--brand);font-weight:800;font-size:21px;color:var(--leaf-deep)}
.logo img{width:38px;height:38px;object-fit:contain;filter:drop-shadow(0 4px 6px rgba(30,90,40,.25))}
.nav-links{display:flex;gap:24px;margin-left:22px}
.nav-links a{font-size:14px;color:var(--ink-2);font-weight:700;transition:.15s}
.nav-links a:hover{color:var(--leaf)}
.nav-cta{margin-left:auto;display:flex;gap:10px;align-items:center}
.nav-cta .btn{padding:11px 20px;font-size:14px}
@media(max-width:860px){.nav-links{display:none}}

/* ============== HERO ============== */
.hero{position:relative;padding:64px 0 40px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:center}
.hero-copy h1{font-size:clamp(34px,5.4vw,60px);letter-spacing:-.01em}
.hero-copy h1 .hl{color:var(--leaf);position:relative;white-space:nowrap}
.hero-copy h1 .hl::after{content:"";position:absolute;left:-2%;right:-2%;bottom:.06em;height:.34em;
  background:color-mix(in srgb,var(--sprout) 55%,transparent);z-index:-1;border-radius:6px;transform:rotate(-1.2deg)}
.hero-copy .lead{margin:20px 0 26px;max-width:30em;font-size:clamp(15px,1.7vw,18px)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-sub{margin-top:20px;display:flex;gap:18px;flex-wrap:wrap;color:var(--mist);font-size:13px}
.hero-sub b{color:var(--leaf-deep);font-family:var(--round)}

.hero-stage{position:relative;display:grid;place-items:center;min-height:440px}
.hero-blob{position:absolute;width:112%;aspect-ratio:1;border-radius:46% 54% 55% 45%/52% 44% 56% 48%;
  background:radial-gradient(circle at 40% 34%, #fff, color-mix(in srgb,var(--sprout) 34%,#fff) 70%, color-mix(in srgb,var(--leaf) 22%,#fff));
  box-shadow:inset 0 8px 40px rgba(255,255,255,.7), var(--shadow);animation:morph 14s ease-in-out infinite}
@keyframes morph{
  0%,100%{border-radius:46% 54% 55% 45%/52% 44% 56% 48%}
  50%{border-radius:56% 44% 47% 53%/44% 55% 45% 56%}}
.hero-tree{position:relative;z-index:2;width:min(78%,380px);filter:drop-shadow(0 24px 26px rgba(30,90,40,.28));
  animation:sway 6s ease-in-out infinite;transform-origin:50% 92%}
@keyframes sway{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2deg)}}
/* floating leaves */
.leaf{position:absolute;width:26px;height:26px;border-radius:100% 0 100% 0;z-index:3;
  background:radial-gradient(circle at 30% 28%, color-mix(in srgb,var(--sprout) 40%,#fff), var(--sprout) 80%);
  box-shadow:inset 0 0 0 1.5px color-mix(in srgb,var(--leaf) 30%,transparent);opacity:.9;
  animation:drift 9s ease-in-out infinite}
.leaf.a{top:8%;left:6%;animation-delay:-1s}
.leaf.b{top:20%;right:2%;width:20px;height:20px;animation-delay:-4s;background:radial-gradient(circle at 30% 28%,#fff,var(--apple) 85%);border-radius:50%}
.leaf.c{bottom:14%;left:-2%;width:18px;height:18px;animation-delay:-2.5s}
.leaf.d{bottom:6%;right:10%;animation-delay:-6s}
@keyframes drift{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-14px) rotate(18deg)}}
@media(max-width:820px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-cta,.hero-sub{justify-content:center}
  .hero-copy .lead{margin-inline:auto}
  .hero-stage{min-height:360px;order:-1}
}

/* speech bubble on hero */
.hero-say{position:absolute;z-index:4;left:-6%;bottom:20%;background:#fff;border:1.5px solid var(--line);
  border-radius:16px 16px 16px 4px;padding:10px 14px;font-family:var(--round);font-weight:700;font-size:13px;
  color:var(--leaf-deep);box-shadow:var(--shadow-sm);max-width:180px;animation:pop 5s ease-in-out infinite}
@keyframes pop{0%,88%,100%{transform:translateY(0) scale(1)}92%{transform:translateY(-4px) scale(1.03)}}
@media(max-width:820px){.hero-say{left:2%;bottom:6%}}

/* ============== SECTION shell ============== */
.section{padding:76px 0;position:relative}
.section-head{max-width:640px;margin-bottom:44px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head h2{font-size:clamp(26px,3.4vw,40px);margin-top:14px}
.section-head p{color:var(--ink-2);margin-top:14px;font-size:16px}
.tint{background:
  linear-gradient(180deg, transparent, color-mix(in srgb,var(--sprout) 10%,transparent) 40%, transparent),
  var(--bg-2)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease, transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* ============== TRAITS ============== */
.traits{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.trait-list{display:grid;gap:16px}
.trait{display:flex;gap:16px;padding:20px 22px;background:#fff;border:1px solid var(--line-soft);
  border-radius:18px;box-shadow:var(--shadow-sm);transition:.2s}
.trait:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--leaf) 35%,var(--line))}
.trait .ic{flex:none;width:50px;height:50px;border-radius:15px;display:grid;place-items:center;font-size:24px;
  background:color-mix(in srgb,var(--sprout) 26%,#fff);border:1px solid color-mix(in srgb,var(--leaf) 22%,transparent)}
.trait h3{font-size:17px;margin-bottom:4px}
.trait p{margin:0;font-size:13.5px;color:var(--mist);line-height:1.7}
.trait-visual{position:relative}
.trait-visual .frame{border-radius:26px;overflow:hidden;background:
  radial-gradient(circle at 60% 30%, #fff, color-mix(in srgb,var(--sprout) 20%,#fff));
  border:1px solid var(--line);box-shadow:var(--shadow);padding:8px}
.trait-visual .frame img{border-radius:20px}
.trait-visual .tag{position:absolute;bottom:-14px;left:24px;background:var(--leaf);color:#fff;
  font-family:var(--round);font-weight:700;font-size:13px;padding:9px 16px;border-radius:999px;box-shadow:var(--shadow-sm)}
@media(max-width:820px){.traits{grid-template-columns:1fr}.trait-visual{order:-1}}

/* ============== FLOW (steps) ============== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line-soft);border-radius:18px;padding:26px 22px 24px;position:relative;
  box-shadow:var(--shadow-sm)}
.step::before{counter-increment:step;content:"0" counter(step);font-family:var(--mono);font-weight:700;
  color:var(--sprout);font-size:22px;letter-spacing:.05em}
.step h3{font-size:16.5px;margin:12px 0 8px}
.step p{margin:0;font-size:13.5px;color:var(--mist);line-height:1.7}
.step .em{font-size:26px;margin-top:6px}
.step-arrow{position:absolute;top:50%;right:-13px;transform:translateY(-50%);color:var(--sprout);font-size:20px;z-index:2}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}.step-arrow{display:none}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ============== TEAM / BRANCH (signature) ============== */
.team{position:relative}
.branch{position:relative;margin-top:20px}
.branch svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:visible}
.branch svg path{fill:none;stroke:color-mix(in srgb,var(--bark) 70%,var(--leaf));stroke-width:5;stroke-linecap:round;
  stroke-dasharray:var(--len);stroke-dashoffset:var(--len);opacity:.55}
.branch.in svg path{animation:grow 1.4s ease forwards}
.branch.in svg path.p2{animation-delay:.15s}.branch.in svg path.p3{animation-delay:.3s}.branch.in svg path.p4{animation-delay:.45s}
@keyframes grow{to{stroke-dashoffset:0}}

.trunk{position:relative;z-index:2;width:max-content;margin:0 auto 8px;text-align:center}
.trunk img{width:150px;margin:0 auto;filter:drop-shadow(0 16px 18px rgba(30,90,40,.28));animation:sway 6s ease-in-out infinite;transform-origin:50% 90%}
.trunk .lbl{margin-top:6px;font-family:var(--round);font-weight:900;color:var(--leaf-deep);font-size:18px}
.trunk .sub{font-size:12px;color:var(--mist)}

.branch-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.pcard{--pc:var(--leaf);background:#fff;border:1px solid var(--line-soft);border-top:4px solid var(--pc);
  border-radius:20px;padding:20px 18px 22px;text-align:center;box-shadow:var(--shadow-sm);transition:.22s;position:relative}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pcard .pic{height:132px;display:grid;place-items:center;margin-bottom:6px}
.pcard .pic img{max-height:132px;width:auto;filter:drop-shadow(0 10px 14px rgba(0,0,0,.16))}
.pcard .role{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--pc);font-weight:700}
.pcard h3{font-size:19px;margin:5px 0 2px;font-family:var(--brand);color:var(--pc)}
.pcard .make{font-size:13px;color:var(--ink-2);font-weight:700;font-family:var(--round);margin-bottom:8px}
.pcard p{font-size:12.5px;color:var(--mist);margin:0 0 14px;line-height:1.7;min-height:3.4em}
.pcard .api{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10.5px;
  color:var(--pc);background:color-mix(in srgb,var(--pc) 10%,#fff);border:1px solid color-mix(in srgb,var(--pc) 26%,transparent);
  padding:5px 10px;border-radius:999px;margin-bottom:12px}
.pcard a.plink{display:inline-block;font-size:12.5px;font-weight:800;color:var(--pc);font-family:var(--round)}
.pcard a.plink:hover{text-decoration:underline}
@media(max-width:900px){.branch-grid{grid-template-columns:repeat(2,1fr)}.branch svg{display:none}}
@media(max-width:480px){.branch-grid{grid-template-columns:1fr}}

/* ============== ASYNC DELIVERY ============== */
.async{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.pipe{background:#fff;border:1px solid var(--line-soft);border-radius:22px;padding:10px;box-shadow:var(--shadow)}
.pipe-row{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:16px}
.pipe-row + .pipe-row{border-top:1px dashed var(--line)}
.pipe-row .n{flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:20px;
  background:color-mix(in srgb,var(--sprout) 24%,#fff);border:1px solid color-mix(in srgb,var(--leaf) 20%,transparent)}
.pipe-row .tx b{font-family:var(--round);font-size:14.5px;color:var(--ink)}
.pipe-row .tx span{display:block;font-size:12.5px;color:var(--mist)}
.pipe-row.live .n{background:var(--leaf);color:#fff;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--leaf) 40%,transparent)}50%{box-shadow:0 0 0 8px transparent}}
@media(max-width:820px){.async{grid-template-columns:1fr}}

/* ============== VOICE / PROACTIVE mock ============== */
.voice{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.chat{background:#fff;border:1px solid var(--line-soft);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
.chat .b{max-width:86%;padding:12px 15px;border-radius:16px;font-size:13.5px;margin-bottom:12px;line-height:1.7}
.chat .b.ai{background:color-mix(in srgb,var(--sprout) 14%,#fff);border:1px solid var(--line);border-bottom-left-radius:5px}
.chat .b.me{background:color-mix(in srgb,var(--leaf) 12%,#fff);border:1px solid color-mix(in srgb,var(--leaf) 24%,var(--line));
  margin-left:auto;border-bottom-right-radius:5px}
.chat .b.pro{background:color-mix(in srgb,var(--bark) 14%,#fff);border:1px dashed color-mix(in srgb,var(--bark) 55%,var(--line));border-radius:16px}
.chat .b .who{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist);margin-bottom:4px}
.chat .b.pro .who{color:var(--bark)}
.wave{display:inline-flex;gap:3px;align-items:flex-end;height:16px;margin-left:6px;vertical-align:middle}
.wave i{width:3px;background:var(--leaf);border-radius:3px;animation:eq 1s ease-in-out infinite}
.wave i:nth-child(1){height:6px;animation-delay:-.9s}.wave i:nth-child(2){height:14px;animation-delay:-.6s}
.wave i:nth-child(3){height:9px;animation-delay:-.3s}.wave i:nth-child(4){height:16px}
@keyframes eq{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}
@media(max-width:820px){.voice{grid-template-columns:1fr}}

/* ============== CTA band ============== */
.cta{margin:20px 0 0;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--leaf),var(--leaf-deep));color:#fff;border-radius:34px;
  padding:56px 40px;text-align:center;box-shadow:var(--shadow)}
.cta::before,.cta::after{content:"";position:absolute;border-radius:50%;opacity:.16;background:#fff}
.cta::before{width:260px;height:260px;top:-120px;right:-60px}
.cta::after{width:200px;height:200px;bottom:-110px;left:-40px}
.cta h2{color:#fff;font-size:clamp(26px,3.6vw,40px);position:relative}
.cta p{color:color-mix(in srgb,#fff 86%,transparent);margin:14px auto 26px;max-width:30em;position:relative}
.cta .btn.primary{background:#fff;color:var(--leaf-deep);position:relative}
.cta .btn.primary:hover{background:#fff;transform:translateY(-2px)}
.cta img{width:96px;margin:0 auto 12px;filter:drop-shadow(0 12px 12px rgba(0,0,0,.25));animation:sway 6s ease-in-out infinite;transform-origin:50% 90%;position:relative}

/* ============== FOOTER ============== */
.foot{padding:52px 0 40px;border-top:1px solid var(--line);margin-top:76px;color:var(--mist);font-size:13px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:28px}
.foot .logo{margin-bottom:12px}
.foot h4{font-family:var(--round);font-size:13px;color:var(--ink);margin:0 0 10px;letter-spacing:.02em}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.foot ul a:hover{color:var(--leaf)}
.foot-btm{border-top:1px solid var(--line-soft);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:720px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.foot-grid{grid-template-columns:1fr}}

@media(prefers-reduced-motion:reduce){
  *{animation:none !important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .branch svg path{stroke-dashoffset:0 !important}
}