:root{--ink:#12323b;--muted:#607177;--paper:#fcfaf4;--white:#fff;--sea:#0f766e;--sea-dark:#0a5a55;--sky:#cfeef0;--sand:#efe4ce;--coral:#d85f45;--line:#d8ded9;--snow:#f3f8f7;--shadow:0 18px 50px rgba(18,50,59,.1);--radius:24px;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",YuGothic,Meiryo,sans-serif;font-size:16px;line-height:1.85}a{color:var(--sea-dark);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}img{max-width:100%}.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px}.skip-link:focus{top:12px}.setup-warning{padding:10px 5vw;background:#fff0d8;border-bottom:1px solid #e9c98e;text-align:center;color:#6a4511}.ad-disclosure{padding:7px 5vw;background:var(--ink);color:#dceaea;text-align:center;font-size:.78rem}.site-header{position:sticky;top:0;z-index:100;background:rgba(252,250,244,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(18,50,59,.1)}.header-inner{max-width:var(--max);margin:auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand strong{display:block;font-size:.98rem;letter-spacing:.03em}.brand small{display:block;color:var(--muted);font-size:.58rem;letter-spacing:.14em}.brand-mark{position:relative;width:44px;height:44px;border-radius:50%;overflow:hidden;background:var(--sky);flex:none}.brand-mark:before{content:"";position:absolute;left:6px;top:17px;width:32px;height:22px;background:var(--sea);clip-path:polygon(0 100%,45% 20%,65% 55%,78% 35%,100% 100%)}.brand-mark:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:12px;background:var(--coral);border-radius:50% 50% 0 0}.primary-nav{display:flex;gap:26px;align-items:center}.primary-nav a{color:var(--ink);text-decoration:none;font-size:.9rem;font-weight:700}.primary-nav a:hover{color:var(--sea)}.menu-button{display:none;border:1px solid var(--line);border-radius:10px;background:#fff;padding:8px 11px;color:var(--ink);font:inherit}.hero{max-width:var(--max);margin:0 auto;padding:72px 24px 86px;display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}.eyebrow{margin:0 0 16px;color:var(--sea);font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase}.hero h1,.page-hero h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:600;letter-spacing:-.035em;line-height:1.28;margin:0}.hero h1{font-size:clamp(2.5rem,5.2vw,4.9rem)}.hero h1 em{color:var(--sea);font-style:normal}.hero-lead{font-size:1.08rem;color:#40575e;max-width:620px;margin:28px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 20px;border-radius:999px;font-weight:800;text-decoration:none;border:1px solid transparent;cursor:pointer;font:inherit}.button.primary{background:var(--sea);color:#fff}.button.primary:hover{background:var(--sea-dark)}.button.secondary{background:transparent;color:var(--ink);border-color:#afbfbd}.hero-stats{display:flex;gap:0;margin:38px 0 0}.hero-stats div{padding:0 24px;border-left:1px solid var(--line)}.hero-stats div:first-child{padding-left:0;border-left:0}.hero-stats dt{font-size:.72rem;color:var(--muted)}.hero-stats dd{font-family:"Yu Mincho",serif;font-size:1.7rem;margin:2px 0 0}.landscape{position:relative;min-height:500px;border-radius:46% 46% 28px 28px;background:linear-gradient(#dff3f3 0 48%,#9fdad7 48% 62%,#2e8e86 62%);overflow:hidden;box-shadow:var(--shadow)}.sun{position:absolute;width:95px;height:95px;border-radius:50%;background:#efb85d;right:65px;top:55px}.mountain{position:absolute;bottom:38%;clip-path:polygon(50% 0,100% 100%,0 100%)}.mountain.far{width:360px;height:245px;left:-70px;background:#6ea59b}.mountain.near{width:400px;height:315px;right:-95px;background:#275f5b}.snow{position:absolute;width:150px;height:85px;right:29px;bottom:55%;background:#fff;clip-path:polygon(50% 0,76% 58%,62% 45%,52% 65%,39% 48%,25% 65%)}.water{position:absolute;left:-8%;bottom:-8%;width:116%;height:44%;background:repeating-radial-gradient(ellipse at 50% -20%,transparent 0 20px,rgba(255,255,255,.32) 22px 24px,transparent 26px 42px)}.steam{position:absolute;width:28px;height:120px;border-left:5px solid rgba(255,255,255,.75);border-radius:50%;transform:rotate(12deg)}.steam.one{right:170px;bottom:115px}.steam.two{right:125px;bottom:95px;transform:rotate(-10deg)}.field-note{position:absolute;left:28px;bottom:28px;background:rgba(255,255,255,.9);padding:19px 22px;border-radius:18px;box-shadow:0 12px 30px rgba(18,50,59,.15)}.field-note small{display:block;color:var(--coral);font-weight:800}.field-note strong{display:block;margin-top:4px;line-height:1.5}.path-section,.category-section,.featured-section,.principles,.content-shell{max-width:var(--max);margin:0 auto;padding:78px 24px}.path-section{border-top:1px solid var(--line)}.section-heading{margin-bottom:28px}.section-heading.split{display:flex;justify-content:space-between;align-items:end;gap:24px}.section-heading h2{margin:0;font-family:"Yu Mincho",serif;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.35}.section-heading p:not(.eyebrow){color:var(--muted);max-width:680px}.journey{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}.journey a{display:flex;flex-direction:column;padding:28px;color:var(--ink);text-decoration:none;border-left:1px solid var(--line)}.journey a:first-child{border-left:0}.journey a:hover{background:var(--snow)}.journey span{font-family:"Yu Mincho",serif;color:var(--coral);font-size:1.4rem}.journey strong{margin-top:32px}.journey small{margin-top:5px;color:var(--muted)}.category-section{background:#f0ebe0;max-width:none}.category-section>.section-heading,.category-section>.category-grid{max-width:var(--max);margin-left:auto;margin-right:auto}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.category-card{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:16px;background:#fff;color:var(--ink);text-decoration:none;padding:24px;border-radius:18px;border:1px solid transparent}.category-card:hover{border-color:#aac4c0;transform:translateY(-2px)}.category-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--sky);font-family:"Yu Mincho",serif}.category-card strong,.category-card small{display:block}.category-card small{color:var(--coral);font-size:.72rem}.category-card p{margin:8px 0 0;color:var(--muted);font-size:.84rem;line-height:1.6}.category-card .arrow{align-self:center}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;min-height:280px}.card-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.72rem}.article-card h3{font-size:1.06rem;line-height:1.65;margin:20px 0 10px}.article-card h3 a{color:var(--ink);text-decoration:none}.article-card h3 a:hover{color:var(--sea)}.article-card p{color:var(--muted);font-size:.86rem;line-height:1.75}.article-card .text-link{margin-top:auto;color:var(--sea);font-size:.82rem;font-weight:800}.principles{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}.principles h2{font-family:"Yu Mincho",serif;font-size:2.6rem;line-height:1.5}.principle-list article{display:grid;grid-template-columns:48px 1fr;column-gap:18px;padding:22px 0;border-top:1px solid var(--line)}.principle-list span{grid-row:1/3;color:var(--coral);font-family:"Yu Mincho",serif;font-size:1.4rem}.principle-list h3,.principle-list p{margin:0}.principle-list p{color:var(--muted)}.site-footer{background:var(--ink);color:#dce6e4;margin-top:80px;padding:60px 24px 24px}.footer-grid,.footer-bottom{max-width:var(--max);margin:auto}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:56px}.footer-brand{color:#fff}.footer-grid h2{font-size:.82rem;color:#fff}.footer-grid a:not(.brand){display:block;color:#c3d4d1;margin:8px 0;text-decoration:none;font-size:.86rem}.footer-grid p{max-width:420px;color:#afc3c0}.footer-bottom{display:flex;justify-content:space-between;margin-top:45px;padding-top:20px;border-top:1px solid #34515a;color:#9eb3b0;font-size:.76rem}.breadcrumbs{max-width:var(--max);margin:18px auto 0;padding:0 24px}.breadcrumbs ol{display:flex;gap:9px;list-style:none;margin:0;padding:0;font-size:.76rem;color:var(--muted);white-space:nowrap;overflow:auto}.breadcrumbs li+li:before{content:"/";margin-right:9px}.page-hero{max-width:var(--max);margin:auto;padding:70px 24px}.page-hero.compact{padding-bottom:46px}.page-hero h1{font-size:clamp(2.35rem,5vw,4.2rem);max-width:900px}.page-hero>p:last-child{max-width:720px;color:var(--muted);font-size:1.04rem}.content-shell{padding-top:32px}.content-shell.narrow{max-width:820px}.roadmap{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:56px}.roadmap article{background:#fff;padding:24px;border-radius:18px;border:1px solid var(--line)}.roadmap span{color:var(--coral);font-family:"Yu Mincho",serif;font-size:1.4rem}.roadmap h2{font-size:1rem}.roadmap p{font-size:.84rem;color:var(--muted)}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px}.comparison article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}.pr-label{display:inline-block;background:#fff1ec;color:#a63f2b;border:1px solid #e8aa9b;border-radius:999px;padding:3px 9px;font-size:.7rem;font-weight:800}.notice,.pillar-intro{margin:28px 0 50px;padding:24px 28px;border-radius:18px;background:#eef7f5;border-left:5px solid var(--sea)}.notice p{margin-bottom:0}.pillar-intro h2{font-family:"Yu Mincho",serif;font-size:1.8rem}.pillar-intro ul{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0}.pillar-intro li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 12px}.pagination{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:45px}.pagination a,.pagination span{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;text-decoration:none}.pagination span{background:var(--ink);color:#fff}.article-body{min-width:0}.article-layout{max-width:var(--max);margin:0 auto;padding:40px 24px 80px;display:grid;grid-template-columns:minmax(0,780px) 270px;gap:70px;align-items:start}.article-header{padding:32px 0 45px;border-bottom:1px solid var(--line)}.article-kicker{display:flex;gap:12px;color:var(--coral);font-size:.76rem;font-weight:800}.article-header h1{font-family:"Yu Mincho",serif;font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.35;margin:20px 0}.article-description{font-size:1.04rem;color:var(--muted)}.article-dates{display:flex;gap:25px;margin:28px 0 0}.article-dates div{display:flex;gap:8px}.article-dates dt{color:var(--muted);font-size:.74rem}.article-dates dd{margin:0;font-size:.74rem}.article-prose{font-size:1.01rem;line-height:2}.article-prose>p:first-child{font-size:1.08rem;color:#334f56}.article-prose h2{font-family:"Yu Mincho",serif;font-size:1.8rem;line-height:1.5;margin:64px 0 20px;padding-top:10px}.article-prose h3{font-size:1.08rem;margin:35px 0 10px}.article-prose p{margin:0 0 22px}.article-prose li{margin:7px 0}.article-prose a{overflow-wrap:anywhere}.answer-box{background:#eaf5f2;border-radius:18px;padding:20px 24px;margin:28px 0}.answer-box p{margin:0}.table-wrap{max-width:100%;overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;min-width:620px;background:#fff}th,td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:#edf5f3;font-size:.82rem}td{font-size:.86rem}.article-aside{position:relative}.sticky-card{position:sticky;top:110px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.sticky-card h2{font-family:"Yu Mincho",serif;font-size:1.25rem}.sticky-card ol{padding-left:22px}.sticky-card a{font-size:.82rem;font-weight:800}.affiliate-box,.next-step{margin:60px 0;padding:30px;background:#f0ebe0;border-radius:20px}.affiliate-box h2,.next-step h2{font-family:"Yu Mincho",serif}.cta-row{display:flex;gap:12px;flex-wrap:wrap}.unset-link{background:#fff;padding:14px;border-radius:10px;font-size:.84rem}.related{margin-top:70px}.related .article-grid{grid-template-columns:repeat(3,1fr)}.related .article-card{min-height:250px;padding:18px}.legal h2{font-family:"Yu Mincho",serif;font-size:1.7rem;margin-top:50px}.definition div{display:grid;grid-template-columns:180px 1fr;border-top:1px solid var(--line);padding:14px}.definition dt{font-weight:700}.definition dd{margin:0}.contact-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}.form-row{margin-bottom:22px}.form-row label{display:block;font-weight:800;margin-bottom:6px}.form-row input,.form-row select,.form-row textarea{width:100%;font:inherit;border:1px solid #9eb0ad;border-radius:10px;padding:12px;background:#fff}.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:3px solid #9fdad7;outline-offset:2px}.honeypot{position:absolute;left:-10000px}.check{display:flex;gap:9px;margin:18px 0}.sitemap-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.sitemap-list section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.sitemap-list h2{font-size:1.08rem}.sitemap-list li{margin:8px 0}.not-found{max-width:820px;margin:0 auto;padding:130px 24px;text-align:center}.not-found h1{font-family:"Yu Mincho",serif;font-size:3rem}.text-link{font-weight:800;text-decoration:none}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--coral);outline-offset:3px}@media(max-width:900px){.primary-nav{display:none;position:absolute;left:16px;right:16px;top:75px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:var(--shadow)}.primary-nav.open{display:grid}.primary-nav a{padding:10px}.menu-button{display:inline-flex;gap:7px;align-items:center}.hero{grid-template-columns:1fr;padding-top:50px}.landscape{min-height:420px}.journey{grid-template-columns:1fr 1fr}.journey a:nth-child(3){border-left:0;border-top:1px solid var(--line)}.journey a:nth-child(4){border-top:1px solid var(--line)}.category-grid,.article-grid{grid-template-columns:repeat(2,1fr)}.principles{grid-template-columns:1fr;gap:20px}.article-layout{grid-template-columns:1fr}.article-aside{display:none}.related .article-grid{grid-template-columns:1fr 1fr}.roadmap{grid-template-columns:1fr 1fr}}@media(max-width:620px){body{font-size:15px}.header-inner{padding:11px 16px}.brand small{display:none}.brand-mark{width:38px;height:38px}.hero{padding:42px 18px 64px;gap:36px}.hero h1{font-size:2.55rem}.landscape{min-height:340px;border-radius:40% 40% 22px 22px}.sun{width:70px;height:70px;right:35px;top:38px}.mountain.far{width:260px;height:180px}.mountain.near{width:290px;height:230px}.snow{width:110px;height:60px;right:20px}.field-note{left:16px;bottom:16px;padding:14px 16px}.hero-stats div{padding:0 15px}.path-section,.category-section,.featured-section,.principles,.content-shell{padding:54px 18px}.journey,.category-grid,.article-grid,.comparison,.roadmap,.sitemap-list,.footer-grid{grid-template-columns:1fr}.journey a{border-left:0;border-top:1px solid var(--line)}.journey a:first-child{border-top:0}.section-heading.split{align-items:start;flex-direction:column}.article-card{min-height:auto}.page-hero{padding:48px 18px 30px}.page-hero h1{font-size:2.45rem}.article-layout{padding:20px 18px 60px}.article-header h1{font-size:2.2rem}.article-dates{display:grid;gap:5px}.article-prose h2{font-size:1.55rem;margin-top:50px}.related .article-grid{grid-template-columns:1fr}.footer-bottom{display:grid;gap:8px}.definition div{grid-template-columns:1fr}.definition dd{margin-top:5px}.not-found h1{font-size:2.3rem}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}