:root{--ink:#192927;--muted:#63706b;--paper:#f6f7f2;--white:#fff;--line:#dce3d8;--green:#ccf17e;--dark:#1e3630;--orange:#ffcdab;--purple:#dcd4f0;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;line-height:1.8}button,input,select{font:inherit}a{color:inherit;text-underline-offset:4px}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline-offset:4px}*:focus-visible{outline:3px solid #7863c8}button{cursor:pointer}button:disabled{cursor:default}h1,h2,h3,p{margin:0}h1{font-size:clamp(36px,4.6vw,62px);line-height:1.35;letter-spacing:-.045em;font-weight:800}h2{font-size:clamp(26px,3vw,36px);line-height:1.45;letter-spacing:-.035em}h3{font-size:20px;line-height:1.5}.wrap{width:min(1160px,calc(100% - 48px));margin:auto}.skip{position:absolute;top:-80px;z-index:99}.skip:focus{top:10px;background:white;padding:10px}.header{height:82px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:-.04em}.brandmark{width:32px;height:32px;border:1.5px solid var(--ink);border-radius:9px;display:grid;place-items:center;background:var(--green)}.brandmark:before{content:'';display:block;border-left:9px solid var(--ink);border-top:6px solid transparent;border-bottom:6px solid transparent;margin-left:3px}.nav{display:flex;gap:26px;align-items:center;font-size:13px;font-weight:600}.nav a{text-decoration:none}.nav a:hover{text-decoration:underline}.private{font-size:11px;border:1px solid var(--line);padding:5px 10px;border-radius:99px;color:var(--muted)}.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;padding:62px 0 42px;align-items:center}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:750;color:var(--muted);margin-bottom:18px}.eyebrow:before{content:'';display:inline-block;width:7px;height:7px;background:#8dbf42;border-radius:50%;margin-right:9px}.hero p{color:var(--muted);margin-top:22px;max-width:440px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:18px;border:1px solid var(--ink);background:var(--ink);color:white;text-decoration:none;padding:11px 20px;border-radius:99px;font-size:13px;font-weight:650;line-height:1.6}.btn.secondary{background:transparent;color:var(--ink);border-color:#a4b1a3}.btn:hover{filter:brightness(1.12)}.hero-board{background:var(--green);border-radius:24px;padding:28px;position:relative;min-height:305px;overflow:hidden}.board-label{font-size:11px;letter-spacing:.12em;font-weight:700}.board-equation{display:flex;align-items:center;justify-content:space-between;margin:30px 0 16px;gap:15px}.board-equation strong{font-size:48px;line-height:1;font-weight:650;letter-spacing:-.05em}.board-equation small{font-size:12px;display:block;margin-top:7px}.board-arrow{font-size:24px}.wave{display:flex;gap:4px;align-items:center;height:44px;border-bottom:1px solid #93b958;padding-bottom:12px;margin:8px 0 15px}.wave span{height:var(--h);width:7px;background:var(--dark);border-radius:3px;opacity:.8}.board-note{font-size:11px;line-height:1.6;max-width:330px}.mini-pill{border:1px solid #8aab58;border-radius:99px;display:inline-block;padding:4px 10px;font-size:10px;margin-top:14px}.intro-line{display:flex;gap:28px;border-bottom:1px solid var(--line);padding:0 0 29px;font-size:11px;color:var(--muted)}.intro-line span:before{content:'✓';margin-right:6px;color:var(--ink)}section{padding:48px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-head p{max-width:360px;color:var(--muted);font-size:13px}.section-label{font-size:10px;letter-spacing:.14em;color:var(--muted);margin-bottom:7px}.symptoms{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.symptom{background:white;border:1px solid var(--line);border-radius:14px;text-align:left;padding:18px 16px;color:var(--ink);font-weight:650;line-height:1.6;font-size:13px;min-height:110px}.symptom .num{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-bottom:10px}.symptom[aria-pressed=true]{border-color:var(--dark);background:var(--dark);color:white}.symptom[aria-pressed=true] .num{color:#cbd6cb}.diagnosis{background:white;border:1px solid var(--line);border-radius:18px;margin-top:14px;padding:26px;display:grid;grid-template-columns:.8fr 1.2fr;gap:30px}.diagnosis p{color:var(--muted);font-size:13px;margin-top:10px}.steps{list-style:none;padding:0;margin:0;counter-reset:s}.steps li{position:relative;padding:0 0 15px 34px;font-size:13px}.steps li:last-child{padding-bottom:0}.steps li:before{counter-increment:s;content:counter(s);background:var(--paper);width:24px;height:24px;line-height:24px;position:absolute;left:0;text-align:center;border-radius:50%;font-size:11px}.related{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.related a{font-size:11px;padding:4px 9px;border-radius:99px;background:var(--paper);text-decoration:none;border:1px solid var(--line)}.tools-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.tool-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}.tool{border-radius:20px;border:1px solid var(--line);background:white;overflow:hidden}.tool-top{padding:24px 24px 18px}.tool-top p{font-size:12px;color:var(--muted);margin-top:8px}.tool-tag{font-size:10px;color:var(--muted);letter-spacing:.12em;margin-bottom:6px}.tool-body{padding:0 24px 24px}.segmented{display:flex;background:var(--paper);padding:4px;border-radius:10px;margin:0 0 20px;gap:4px}.segmented button{flex:1;border:0;background:transparent;border-radius:7px;padding:7px 4px;color:var(--muted);font-size:12px}.segmented button[aria-pressed=true]{background:white;box-shadow:0 1px 3px #16292018;color:var(--ink);font-weight:700}.fields{display:grid;grid-template-columns:1fr 1fr;gap:13px}.field label{display:block;font-size:11px;font-weight:650;margin-bottom:6px}.input-unit{display:flex;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:9px;overflow:hidden}.input-unit input{width:100%;min-width:0;border:0;background:transparent;padding:10px 12px;color:var(--ink)}.input-unit span{font-size:11px;color:var(--muted);padding-right:12px;white-space:nowrap}select{width:100%;padding:10px;border:1px solid var(--line);background:var(--paper);border-radius:9px;font-size:13px;color:var(--ink)}.calc-result{background:#eaf4d9;border-radius:12px;padding:20px;margin-top:18px}.result-label{font-size:11px;color:var(--muted)}.result-number{font-size:40px;letter-spacing:-.045em;line-height:1.3}.result-number span{font-size:15px;margin-left:5px;letter-spacing:0}.calc-result p{font-size:11px;margin-top:8px;line-height:1.7}.formula{color:var(--muted);font-size:10px;margin-top:11px}.error{color:#9b2b20;font-size:12px;margin-top:12px;font-weight:650}.ratio-view{height:198px;background:#eef0ea;border-radius:12px;margin-top:18px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.target-frame{position:relative;background:#202d2b;box-shadow:0 6px 20px #17282224;overflow:hidden;border:1px solid #596760}.source-art{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--purple);display:flex;align-items:center;justify-content:center;overflow:hidden}.source-art:before{content:'';width:45%;height:70%;background:#9777bd;border-radius:100% 100% 0 0;position:absolute;bottom:-15%;left:9%}.source-art:after{content:'';position:absolute;width:16%;aspect-ratio:1;background:#f5eead;border-radius:50%;right:15%;top:15%}.source-art strong{z-index:1;font-weight:500;font-size:13px;border:1px dashed #66507f;padding:9px}.ratio-caption{font-size:11px;margin-top:12px;min-height:40px}.mini-note{font-size:10px;color:var(--muted);margin-top:8px}.searchbar{display:flex;align-items:center;gap:12px;background:white;border:1px solid var(--line);border-radius:12px;padding:12px 16px;max-width:500px;flex:1}.searchbar input{width:100%;border:0;background:none;outline:none;font-size:13px}.searchbar:focus-within{outline:3px solid #7863c8;outline-offset:3px}.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.chip{border:1px solid var(--line);border-radius:99px;background:transparent;padding:6px 14px;font-size:11px;color:var(--muted)}.chip[aria-pressed=true]{background:var(--ink);color:white;border-color:var(--ink)}.dictionary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.term-card{display:block;background:white;border:1px solid var(--line);border-radius:14px;padding:21px;text-decoration:none;transition:transform .15s,border-color .15s}.term-card:hover{transform:translateY(-2px);border-color:#869d80}.term-meta{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:var(--muted);margin-bottom:11px}.term-card h3{font-size:18px}.term-card .en{font-size:10px;color:var(--muted);margin-top:3px}.term-card p{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.8}.count{font-size:11px;color:var(--muted);margin:10px 0}.empty{border:1px dashed var(--line);padding:30px;border-radius:12px;grid-column:1/-1}.checklist{background:var(--dark);color:white;border-radius:20px;display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;padding:34px;margin-top:15px}.checklist p{font-size:12px;color:#bccdc3;margin-top:12px}.checklist label{display:flex;align-items:start;gap:12px;font-size:13px;margin-bottom:11px;cursor:pointer}.checklist input{margin-top:6px;accent-color:var(--green);width:17px;height:17px;flex-shrink:0}.check-progress{font-size:11px;color:var(--green);margin-top:15px}.reset{color:#c7d8c7;font-size:11px;background:transparent;border:0;padding:5px 0;text-decoration:underline}.footer{border-top:1px solid var(--line);padding:28px 0 35px;display:flex;justify-content:space-between;gap:24px;font-size:10px;color:var(--muted)}.footer nav{display:flex;gap:18px}.article{max-width:760px;margin:auto;padding:50px 0 70px}.breadcrumbs{font-size:11px;color:var(--muted);margin-bottom:25px}.article h1{font-size:42px}.article .lead{font-size:20px;margin:24px 0;line-height:1.85}.article h2{font-size:22px;margin:32px 0 10px}.article p{margin:12px 0;font-size:14px}.article .panel{padding:23px;border:1px solid var(--line);border-radius:15px;background:white;margin:22px 0}.article .panel.action{background:#eaf4d9}.article .source{font-size:11px;color:var(--muted)}.article li{margin-bottom:12px}.article hr{border:0;border-top:1px solid var(--line);margin:30px 0}.research-card{border-bottom:1px solid var(--line);padding:18px 0}.research-card h3{font-size:18px}.badge{font-size:10px;border-radius:99px;padding:4px 9px;background:var(--green);display:inline-block;margin-bottom:12px}[hidden]{display:none!important}@media(max-width:900px){.hero{gap:30px}.symptoms{grid-template-columns:repeat(3,1fr)}.tool-grid{grid-template-columns:1fr 1fr}.nav{gap:14px}.private{display:none}.dictionary-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:650px){.wrap{width:calc(100% - 32px)}.header{height:67px;gap:10px}.brand{font-size:17px;gap:8px}.brandmark{width:28px;height:28px;border-radius:8px}.nav{gap:12px;font-size:11px}.nav a:first-child{display:none}.hero{grid-template-columns:1fr;gap:26px;padding:35px 0 24px}.hero p{font-size:13px;margin-top:17px}.hero h1{font-size:39px}.eyebrow{margin-bottom:13px;font-size:10px}.hero-actions{margin-top:21px}.hero-board{padding:21px;min-height:0}.board-equation{margin:20px 0 13px;justify-content:flex-start;gap:28px}.board-equation strong{font-size:37px}.wave{position:absolute;right:20px;bottom:28px;width:95px;opacity:.2;border:0}.board-note{max-width:230px}.mini-pill{margin-top:10px}.intro-line{flex-wrap:wrap;gap:6px 16px;font-size:10px;padding-bottom:22px}section{padding:34px 0}.section-head{align-items:start;flex-direction:column;gap:12px;margin-bottom:19px}.section-head p{font-size:12px}.symptoms{grid-template-columns:repeat(2,1fr);gap:8px}.symptom{min-height:85px;padding:12px;font-size:12px}.symptom .num{margin-bottom:3px;font-size:10px}.symptom:last-child{grid-column:1/-1;min-height:55px;display:flex;align-items:center;gap:10px}.symptom:last-child .num{margin:0}.diagnosis{grid-template-columns:1fr;gap:20px;padding:21px}.diagnosis h3{font-size:19px}.diagnosis p{font-size:12px}.tool-grid{grid-template-columns:1fr}.tool-top{padding:22px 20px 16px}.tool-body{padding:0 20px 22px}.searchbar{width:100%;max-width:none}.dictionary-grid{grid-template-columns:1fr}.term-card{padding:17px}.term-meta{margin-bottom:7px}.term-card p{margin-top:8px}.filters{gap:6px}.chip{padding:5px 11px}.checklist{grid-template-columns:1fr;gap:24px;padding:24px}.footer{flex-direction:column;gap:12px}.article{padding:30px 0 45px}.article h1{font-size:34px}.article .lead{font-size:17px}.article p{font-size:13px}.article h2{font-size:21px}.article .panel{padding:19px}.ratio-view{height:195px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.term-card{transition:none}}
@media(max-width:650px){.hero h1{font-size:31px;line-height:1.45}.hero-actions{gap:9px}.hero-actions .btn{font-size:12px;padding:10px 14px;gap:10px}}