:root{--g:#2b4a8b;--g2:#3d63b3;--ai-l:#e4ebf8;--coral:#f2836b;--coral-l:#ffe3da;--mus:#f2b84b;--mus-l:#fff0cc;--cream:#fffaf1;--ink:#1e2433;--mute:#5a6275}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"M PLUS Rounded 1c","Noto Sans JP",sans-serif;font-size:16px;line-height:1.75;color:var(--ink);background:var(--cream);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
/* header */
.hd{background:#fff;position:sticky;top:0;z-index:20;box-shadow:0 2px 0 rgba(43,74,139,.08)}
.hd .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;text-decoration:none;color:var(--g);min-height:44px}
.seal{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--g);color:#fff;font-family:"Noto Serif JP",serif;font-size:19px;box-shadow:inset 0 -3px 0 var(--coral)}
.gnav{margin-left:auto;display:flex;gap:4px}
.gnav a{padding:10px 14px;min-height:44px;display:flex;align-items:center;text-decoration:none;font-weight:700;border-radius:999px;font-size:16px}
.gnav a:hover{background:var(--ai-l)}
.menu-btn{display:none;font-size:16px;margin-left:auto;width:44px;height:44px;border:0;background:var(--ai-l);border-radius:12px}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:20px;height:2px;background:var(--g);margin:auto;position:relative;content:""}
.menu-btn span::before{position:absolute;top:-6px}.menu-btn span::after{position:absolute;top:6px}
/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#e3ebfa 0%,#fff5e0 55%,#ffe4d8 100%);padding:36px 0 48px}
.blob{position:absolute;border-radius:50%;pointer-events:none}
.b1{width:540px;height:540px;right:-130px;top:-150px;background:var(--g);opacity:.95;border-radius:46% 54% 60% 40%/50% 45% 55% 50%}
.b2{width:260px;height:260px;right:400px;bottom:-120px;background:var(--mus);opacity:.85}
.b3{width:140px;height:140px;left:-50px;top:240px;background:var(--coral);opacity:.5}
.hero-in{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
.eyebrow{display:flex;gap:8px;margin:0 0 10px;flex-wrap:wrap}
.eyebrow span{background:#fff;color:var(--g);font-weight:700;font-size:14px;padding:3px 12px;border-radius:999px;box-shadow:0 2px 0 rgba(43,74,139,.15)}
h1{font-size:44px;line-height:1.3;margin:0 0 8px;font-weight:800;color:var(--g);letter-spacing:.02em}
h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--mus) 62%);padding:0 2px}
.lead{margin:0 0 16px;font-size:17px;color:var(--mute);font-weight:500}
.tool{background:#fff;border-radius:24px;padding:20px;box-shadow:0 18px 40px rgba(43,74,139,.18),0 4px 0 var(--g);position:relative;z-index:2}
.f{display:block}
.fl{font-size:16px;font-weight:700;color:var(--g)}
textarea{display:block;width:100%;font:inherit;font-size:17px;line-height:1.6;border:2px solid #dfe5f0;border-radius:14px;padding:10px 14px;background:#fbfcfe;color:var(--ink);resize:vertical;min-height:96px;margin:4px 0 12px}
textarea:focus{outline:none;border-color:var(--g2);background:#fff}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--ai-l);border-radius:14px;padding:4px}
.seg-b{min-height:44px;border:0;background:transparent;border-radius:11px;font:inherit;font-weight:800;font-size:16px;color:var(--g);cursor:pointer}
.seg-b.on{background:var(--g);color:#fff;box-shadow:0 3px 8px rgba(43,74,139,.3)}
.btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;margin-top:14px;min-height:56px;border:0;border-radius:16px;background:var(--coral);color:#fff;font:inherit;font-weight:800;font-size:18px;cursor:pointer;box-shadow:0 4px 0 #c95d47}
.btn:hover{transform:translateY(-1px)}
.arw{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#fff;color:var(--coral);font-size:16px}
.opt{margin-top:10px}
.ol{display:block;font-size:16px;font-weight:700;color:var(--g);line-height:1.4;margin-bottom:4px}
.ol small{font-size:14px;font-weight:500;color:var(--mute)}
.seg4{grid-template-columns:repeat(4,1fr)}
.seg-lite{background:#f4f6fb}.seg-lite .seg-b{font-weight:700}.seg-lite .seg-b.on{background:#fff;color:var(--g);box-shadow:0 0 0 2px var(--g2) inset}
.desk-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
/* result */
.rec{background:var(--ai-l);border-radius:16px;padding:12px 16px 12px;position:relative}
.rec-k{margin:0 0 4px;display:inline-block;background:var(--g);color:#fff;font-weight:800;font-size:16px;padding:0 12px;border-radius:999px}
.why{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:2px}
.why li{font-size:16px;color:var(--ink);line-height:1.6}
.why b{color:var(--g)}
.k{display:inline-block;font-size:14px;font-weight:800;color:#fff;border-radius:6px;padding:0 6px;margin:0 6px 0 2px;line-height:1.6}
.k1{background:var(--g)}.k2{background:var(--coral)}.k3{background:#d99a20}
.alt{margin-top:8px;border-radius:12px;background:#f8f9fc}
.alt summary{min-height:44px;display:flex;align-items:center;padding:0 14px;font-weight:800;color:var(--g);cursor:pointer;font-size:16px}
.alt ul{margin:0;padding:0 14px 10px 32px}
.alt li{margin-bottom:4px}
.tag{display:inline-block;margin-left:6px;font-size:14px;font-weight:700;background:var(--mus-l);color:#8a5f00;border-radius:999px;padding:0 8px}
.spin{display:none;width:20px;height:20px;border:3px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.btn:disabled{background:#f0a796;box-shadow:0 4px 0 #d9897a;cursor:wait;transform:none}
.skel,.err{display:none;margin-top:18px;border-top:2px dashed #dfe5f0;padding-top:14px}
.skel span{display:block;height:18px;border-radius:9px;margin:10px 0;background:linear-gradient(90deg,#e8edf6 25%,#f5f7fb 50%,#e8edf6 75%);background-size:200% 100%;animation:sh 1.2s infinite}
.skel span:first-child{width:38%;height:24px}.skel .s2{width:85%}.skel .s3{width:60%}
@keyframes sh{to{background-position:-200% 0}}
.err p{margin:0;background:#fff1ee;border:2px solid #f6b7a8;color:#a2391f;border-radius:14px;padding:12px 14px;font-weight:700}
.retry{display:flex;align-items:center;justify-content:center;margin:10px 0 0;min-height:48px;padding:0 22px;border:0;background:var(--g);color:#fff;border-radius:14px;font:inherit;font-weight:800;font-size:16px;cursor:pointer;box-shadow:0 4px 0 #1b2d55}
.is-loading .spin{display:block}.is-loading .arw{display:none}
.is-loading .res,.is-error .res{display:none}
.is-loading .skel{display:block}.is-error .err{display:block}

.res{margin-top:18px;border-top:2px dashed #dfe5f0;padding-top:14px}
.res.pop{animation:pop .4s ease}
@keyframes pop{from{opacity:.3;transform:translateY(6px)}to{opacity:1;transform:none}}
.copy{display:flex;align-items:center;justify-content:center;margin:8px 0 0 auto;min-height:44px;padding:0 18px;border:2px solid var(--g);background:#fff;color:var(--g);border-radius:12px;font:inherit;font-weight:800;font-size:16px;cursor:pointer}
.hero-art{position:relative}
.art-frame{border-radius:32px;overflow:hidden;aspect-ratio:4/5;box-shadow:0 24px 50px rgba(30,36,51,.25);border:6px solid #fff;transform:rotate(1.5deg)}
.art-frame img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;background:#fff;border-radius:16px;padding:8px 16px;font-weight:700;box-shadow:0 8px 20px rgba(30,36,51,.18);font-size:16px}
.badge b{color:var(--coral);font-size:24px;margin-right:2px}
.bd1{left:-28px;top:40px;transform:rotate(-4deg)}
.bd2{right:-10px;bottom:36px;background:var(--mus);color:var(--ink)}
/* ads */
.ad{position:relative;margin:28px auto;background:repeating-linear-gradient(45deg,#eef0f5,#eef0f5 10px,#e6e9f0 10px,#e6e9f0 20px);border:1px dashed #c3c9d6;border-radius:8px;flex:none}
.ad span{position:absolute;top:4px;left:8px;font-size:12px;color:#7d8597}
.ad-728{width:728px;height:90px}
.ad-336{width:336px;height:280px}
.ad-300{display:none;width:300px;height:250px}
/* sections */
.sec{padding:64px 0}
.sec-h{text-align:center;margin-bottom:32px}
.kicker{margin:0;font-weight:800;color:var(--coral);letter-spacing:.2em;font-size:16px}
h2{font-size:32px;margin:4px 0;color:var(--g);font-weight:800;line-height:1.4}
.sub{margin:0;color:var(--mute)}
/* examples */
.ex-sec{background:#fff}
.exs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ex{border-radius:22px;padding:18px 20px;background:var(--cream);box-shadow:0 5px 0 var(--ai-l);display:grid;gap:6px}
.ex:nth-child(3n+2){box-shadow:0 5px 0 var(--coral-l)}.ex:nth-child(3n){box-shadow:0 5px 0 var(--mus-l)}
.ex-b{margin:0;color:var(--mute);font-size:16px;text-decoration:line-through;text-decoration-color:rgba(242,131,107,.6)}
.ex-b::before{content:"BEFORE";display:inline-block;margin-right:8px;font-size:12px;font-weight:800;color:#a06f00;background:var(--mus-l);padding:0 8px;border-radius:999px;text-decoration:none}
.ex-a{width:32px;height:32px;border-radius:50%;background:var(--coral);color:#fff;display:grid;place-items:center;font-weight:800;transform:rotate(90deg)}
.ex-k{margin:0;font-size:20px;font-weight:800;color:var(--g)}
/* tools */
.tools-sec{background:var(--g);position:relative}
.tools-sec h2{color:#fff}
.tools-sec .kicker{color:var(--mus)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border-radius:24px;padding:20px;text-decoration:none;display:grid;grid-template-columns:96px 1fr;grid-template-rows:auto auto;column-gap:16px;align-items:center;transition:transform .15s;min-height:44px}
.card:hover{transform:translateY(-4px)}
.card img{grid-row:1/3;width:96px;height:96px;border-radius:20px;object-fit:cover}
.ct{margin:0;font-size:20px;font-weight:800;color:var(--g);align-self:end}
.cd{margin:0;color:var(--mute);align-self:start}
.c1{box-shadow:0 6px 0 var(--coral)}.c2{box-shadow:0 6px 0 var(--mus)}.c3{box-shadow:0 6px 0 #9fb8ea}.c4{box-shadow:0 6px 0 var(--mus)}.c5{box-shadow:0 6px 0 var(--coral)}.c6{box-shadow:0 6px 0 #9fb8ea}
/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps li{background:#fff;border-radius:24px;padding:16px 16px 24px;position:relative;box-shadow:0 8px 24px rgba(30,36,51,.08)}
.steps img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:18px;background:var(--ai-l)}
.st-n{position:absolute;top:4px;left:4px;width:48px;height:48px;border-radius:50%;background:var(--coral);color:#fff;display:grid;place-items:center;font-size:22px;font-weight:800;box-shadow:0 4px 0 #c95d47}
.st-t{font-size:20px;font-weight:800;color:var(--g);margin:14px 0 4px}
.steps p{margin:0}
/* faq */
.faq{background:#fff}
.faq details{background:var(--cream);border-radius:18px;margin-bottom:12px;padding:0 20px}
.faq summary{min-height:56px;display:flex;align-items:center;font-weight:800;cursor:pointer;list-style:none;gap:12px;font-size:17px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";display:grid;place-items:center;flex:none;width:32px;height:32px;border-radius:50%;background:var(--g);color:#fff}
.faq details p{margin:0;padding:0 0 18px 44px}
/* footer */
.ft{background:#1b2d55;color:#e6ebf5;padding:40px 0}
.ft .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:16px 32px}
.ft-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;margin:0}
.ft .seal{background:var(--coral);box-shadow:none}
.ft-links{display:flex;flex-wrap:wrap;gap:4px}
.ft-links a{min-height:44px;display:flex;align-items:center;padding:0 12px;text-decoration:none}
.ft small{margin-left:auto;font-size:14px;opacity:.7}
/* tablet */
@media (max-width:960px){.hero-in{grid-template-columns:1fr}.hero-art{max-width:520px;margin:0 auto}.cards,.exs{grid-template-columns:1fr 1fr}.gnav{display:none}.menu-btn{display:block}.ad-728{display:none}.ad-300{display:block}}
/* mobile */
@media (max-width:640px){
 .wrap{padding:0 16px}
 .hd .wrap{height:52px}.logo{font-size:17px}.seal{width:32px;height:32px}
 .hero{padding:12px 0 28px}
 .b1{width:140px;height:140px;right:-80px;top:-80px}.b3{display:none}
 .eyebrow{display:none}
 h1{font-size:28px;margin-bottom:4px}
 .lead{font-size:16px;margin-bottom:10px;line-height:1.5}
 .tool{padding:14px;border-radius:20px}
 textarea{min-height:80px;margin-bottom:2px;padding:8px 12px}
 .desk-row{display:block}.lead{display:none}
 .opt{margin-top:8px}.ol{margin-bottom:2px}.seg{padding:3px}
 .seg-b{padding:0 2px}
 .btn{margin-top:12px;min-height:54px}
 .out{font-size:17px}
 .hero-art{margin-top:8px}
 .art-frame{aspect-ratio:4/3;transform:none}.art-frame img{object-position:center 25%}
 .bd1{left:8px;top:-12px}.bd2{right:8px}
 .ad-728,.ad-336{display:none}.ad-300{display:block}
 .sec{padding:44px 0}
 h2{font-size:24px}
 .exs{grid-template-columns:1fr;gap:14px}
 .cards{grid-template-columns:1fr;gap:14px}
 .card{grid-template-columns:72px 1fr}.card img{width:72px;height:72px}
 .steps{grid-template-columns:1fr}
 .ft small{margin-left:0}
}
.out{margin:0;font-size:18px;font-weight:700;line-height:1.7}
.out mark{background:linear-gradient(transparent 58%,#ffd88a 58%);color:inherit;padding:0 1px}
@media (max-width:640px){.out{font-size:17px}}
/* Behavior and validation; the approved illustration, colors and layout are retained. */
[hidden]{display:none!important}
.seg4{grid-template-columns:repeat(5,minmax(0,1fr))}
.privacy{font-size:13px;color:var(--mute);line-height:1.7;margin:14px 4px 0}
.input-hint{font-size:14px;color:#a2391f;margin:4px 0}
.demo-notice{font-size:13px;color:var(--mute);margin:0 0 8px}
.out,.why,.alt{overflow-wrap:anywhere;white-space:pre-wrap}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--g2);outline-offset:3px}
@media(max-width:960px){.gnav.is-open{display:flex;position:absolute;top:100%;left:0;right:0;background:#fff;flex-wrap:wrap;padding:8px 16px;box-shadow:0 4px 8px #2b4a8b22}}