:root{color-scheme:light;--ink:#182c37;--muted:#536570;--paper:#fcfbf8;--soft:#f1f5f4;--line:#dce5e5;--accent:#0c5c62;--accent-dark:#08464b;--gold:#c8842e;--white:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,system-ui,sans-serif;line-height:1.75}
a{color:var(--accent);text-underline-offset:3px}
button,input{font:inherit}
.wrap{width:min(1120px,calc(100% - 40px));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:8px;z-index:10}
.skip:focus{left:8px}
.site-head{background:rgba(252,251,248,.95);border-bottom:1px solid var(--line)}
.head-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-size:1.15rem;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:.04em}
nav{display:flex;align-items:center;gap:20px;font-size:.91rem;font-weight:700}
nav a{text-decoration:none;color:var(--ink)}
nav a:hover,nav a:focus-visible{color:var(--accent)}
.nav-cta{border:1px solid var(--accent);border-radius:999px;padding:7px 15px;color:var(--accent);background:transparent;cursor:pointer;font-weight:700}
.hero{padding-block:90px 76px}
.eyebrow,.section-tag{color:var(--accent);font-weight:800;font-size:.84rem;letter-spacing:.09em}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.5rem,6vw,4.8rem);line-height:1.25;letter-spacing:-.04em;max-width:900px;margin-bottom:22px}
.lead{font-size:clamp(1.08rem,2vw,1.28rem);color:#334954;max-width:780px;margin-bottom:28px}
.hero-actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 24px;border:0;border-radius:10px;background:var(--accent);color:var(--white);text-decoration:none;font-weight:800;cursor:pointer;box-shadow:0 5px 0 var(--accent-dark)}
.button:hover,.button:focus-visible{background:var(--accent-dark)}
.button:active{transform:translateY(3px);box-shadow:0 2px 0 var(--accent-dark)}
.text-link{font-weight:700}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:820px;margin-top:70px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.facts div{padding:22px 10px 20px 0;display:flex;gap:9px;align-items:baseline}
.facts strong{font-size:clamp(1.6rem,3vw,2.2rem);color:var(--ink);line-height:1}
.facts span{font-size:.84rem;color:var(--muted)}
.section{padding-block:76px}
.pale{background:var(--soft);border-block:1px solid #e9eeee}
h2{font-size:clamp(1.8rem,4vw,2.75rem);line-height:1.35;letter-spacing:-.025em;margin-bottom:20px}
h3{font-size:1.15rem;line-height:1.45;margin-bottom:10px}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px}
.steps article{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:25px;min-height:195px}
.step-number{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:#d9edeb;color:var(--accent-dark);font-weight:900;margin-bottom:20px}
.steps p,.explain p{color:var(--muted);margin:0}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.feature-grid article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}
.feature-grid p{color:var(--muted);margin:0}
.explain{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;margin-top:40px}
.note,.result-note{background:#e5eee9;border-left:5px solid var(--gold);padding:22px 24px;border-radius:4px 12px 12px 4px}
.note strong,.result-note strong{display:block;margin-bottom:8px}
.section-intro{max-width:760px;color:var(--muted);margin-bottom:30px}
.test-list{display:grid;gap:12px}
.test-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.test-card[open]{border-color:#aac9c5;box-shadow:0 8px 24px rgba(20,55,57,.06)}
.test-card>summary{display:grid;grid-template-columns:48px minmax(140px,1fr) minmax(180px,2fr) 20px;align-items:center;gap:16px;list-style:none;cursor:pointer;padding:18px 24px}
.test-card>summary::-webkit-details-marker,.script-box>summary::-webkit-details-marker{display:none}
.test-card>summary:after{content:"＋";font-size:1.3rem;color:var(--accent)}
.test-card[open]>summary:after{content:"−"}
.test-card>summary:hover{background:#f8fbfa}
.test-number{display:grid;place-items:center;width:43px;height:43px;background:#e1efed;color:var(--accent-dark);border-radius:11px;font-weight:900}
.test-title{font-weight:800;font-size:1.04rem}
.test-hint{font-size:.89rem;color:var(--muted)}
.test-body{border-top:1px solid var(--line);padding:20px 25px 25px}
.long-note{color:var(--accent-dark);font-size:.91rem;font-weight:700}
.script-box{background:#f7f7f3;border-radius:9px;padding:12px 15px;margin-bottom:24px}
.script-box summary{cursor:pointer;font-weight:800;color:var(--accent-dark)}
.script-box p{white-space:pre-wrap;margin:10px 0 0;color:#344952;font-size:.92rem}
.profile{border-top:1px solid var(--line);padding-top:19px;margin-top:19px}
.profile h3{font-size:1rem;margin:0 0 4px}
.profile-note{font-size:.85rem;color:var(--muted);margin:0 0 13px}
.audio-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.audio-item{padding:15px;background:#f5f8f7;border-radius:9px;min-width:0}
.audio-item strong{display:block;margin-bottom:8px;color:var(--ink)}
.audio-item audio{width:100%;height:48px}
.result-grid{display:grid;grid-template-columns:1.3fr .85fr;gap:60px;align-items:start}
.result-grid p{color:#334954}
.result-note p{margin-bottom:8px;font-size:.94rem}
.register-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.register-copy p:not(.section-tag){color:var(--muted)}
.register-form{background:white;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 12px 36px rgba(20,55,57,.07)}
.register-form>label:not(.consent){display:block;font-weight:800;margin:12px 0 6px}
.register-form input[type=text],.register-form input[type=email]{width:100%;height:49px;border:1px solid #9bb3b3;border-radius:8px;padding:10px 12px;background:#fff;color:var(--ink)}
.register-form input:focus-visible{outline:3px solid #83c4c4;outline-offset:2px}
.consent{display:flex;align-items:flex-start;gap:10px;margin-top:20px;font-size:.91rem;font-weight:700}
.consent input{width:18px;height:18px;flex:none;margin-top:4px;accent-color:var(--accent)}
.purpose{font-size:.82rem;color:var(--muted);line-height:1.7;margin:10px 0 22px}
.register-form .button{width:100%}
.entry-page{min-height:100vh;display:flex;flex-direction:column}
.entry-wrap{width:min(1060px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;padding-block:70px}
.entry-copy h1{font-size:clamp(2.5rem,5vw,4rem)}
.entry-copy>p:last-child{color:var(--muted)}
.entry-page .site-foot{margin-top:auto}
.form-error{background:#fff0ed;color:#9b3423;padding:10px;border-radius:8px;font-weight:700}
.trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.site-foot{border-top:1px solid var(--line);padding:28px 0;background:#eef3f1;color:var(--muted);font-size:.84rem}
.site-foot .wrap{display:flex;gap:30px;flex-wrap:wrap}
.site-foot p{margin:0}
.thanks-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:var(--soft)}
.thanks-card{max-width:550px;background:#fff;padding:clamp(30px,6vw,60px);border:1px solid var(--line);border-radius:18px;box-shadow:0 15px 35px rgba(20,55,57,.08)}
.thanks-card h1{font-size:2.2rem}
.thanks-card .button{margin-top:10px}
.small{font-size:.86rem;color:var(--muted);margin-top:35px}
@media(max-width:750px){.head-inner{align-items:flex-start;padding-block:15px;flex-direction:column}nav{gap:11px;flex-wrap:wrap;font-size:.81rem}.hero{padding-block:60px}.facts{margin-top:50px}.steps,.explain,.feature-grid,.result-grid,.register-section,.entry-wrap{grid-template-columns:1fr;gap:18px}.entry-wrap{padding-block:45px}.steps article{min-height:0}.test-card>summary{grid-template-columns:43px 1fr 20px;gap:11px;padding:14px}.test-hint{grid-column:2;grid-row:2}.test-card>summary:after{grid-column:3;grid-row:1}.test-body{padding:16px}.audio-grid{grid-template-columns:1fr}.register-form{padding:22px}}
@media(max-width:480px){.wrap{width:min(100% - 28px,1120px)}.facts{grid-template-columns:1fr}.facts div{padding:14px 0;border-bottom:1px solid var(--line)}.facts div:last-child{border-bottom:0}.site-foot .wrap{display:block}.site-foot p+p{margin-top:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}