@charset "UTF-8";
:root{--ink:#183a30;--body:#364b43;--paper:#f6f7f0;--white:#fffef8;--green:#235b44;--lime:#d8f17c;--muted:#5b6f65;--line:#d8e0d4;--soft:#e9eee3;--radius:20px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--paper);color:var(--body);font-family:"Yu Gothic","Meiryo",system-ui,sans-serif;font-size:16px;line-height:1.85;overflow-wrap:anywhere}
a{color:var(--green);text-underline-offset:.25em}
a:hover{text-decoration-thickness:2px}
button,a,summary{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid #d7781b;outline-offset:5px}
img{max-width:100%;height:auto;display:block}
button{font:inherit}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{color:var(--ink)}
h1,h2{letter-spacing:-.045em;line-height:1.45}
h1{font-size:clamp(2.35rem,4.1vw,4.1rem);font-weight:750;margin-bottom:24px}
h2{font-size:clamp(1.7rem,2.7vw,2.7rem);margin-bottom:20px}
h3{font-size:1.2rem;line-height:1.65;margin-bottom:12px}
p{margin-bottom:20px}
ul,ol{padding-left:1.35em}
li+li{margin-top:8px}
.container{width:min(1180px,calc(100% - 80px));margin-inline:auto}
.skip-link{position:fixed;top:-100px;left:20px;z-index:20;background:var(--ink);color:white;padding:12px 20px;border-radius:8px}
.skip-link:focus{top:12px}
.site-header{border-bottom:1px solid var(--line);background:var(--paper)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:96px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font:800 25px/1.2 system-ui,sans-serif;text-decoration:none;letter-spacing:-1px;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:50%;background:var(--ink);display:grid;place-items:center;color:var(--lime);font:800 23px/1 Georgia,serif}
.brand small{font-size:11px;font-weight:500;letter-spacing:.13em;display:block;margin-top:5px}
.site-nav{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.site-nav a{font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.site-nav a[aria-current=page]{border-bottom:2px solid var(--green)}
.site-nav .nav-cta{background:var(--ink);color:white;border-radius:7px;padding:10px 17px}
.eyebrow{font:700 12px/1.5 system-ui,sans-serif;letter-spacing:.18em;color:var(--green);margin-bottom:22px;display:flex;align-items:center;gap:10px;text-transform:uppercase}
.eyebrow:before{content:"";display:block;width:25px;height:2px;background:currentColor}
.intro{font-size:17px;line-height:2;max-width:39em;color:var(--body)}
.small,.muted{color:var(--muted);font-size:13px}
.small a{font-weight:600}
.hero{padding:76px 0 66px}
.hero-grid{display:grid;grid-template-columns:1fr 1.04fr;gap:54px;align-items:center}
.hero h1 span{display:block}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:28px 0 16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:50px;padding:12px 23px;border-radius:7px;background:var(--green);color:#fff;text-decoration:none;font-size:14px;font-weight:750;line-height:1.5;border:1px solid var(--green);transition:background .18s,transform .18s}
.btn:hover{background:var(--ink);transform:translateY(-2px)}
.btn.secondary{background:transparent;color:var(--ink);border-color:#a7b7a9}
.btn.secondary:hover{background:var(--soft)}
.btn.light{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.text-link{font-size:14px;font-weight:700;display:inline-block}
.hero-visual{position:relative;background:#e2e9db;padding:30px 24px 24px;border-radius:26px}
.visual-label{display:flex;align-items:center;justify-content:space-between;gap:10px;font:600 11px/1.5 system-ui,sans-serif;letter-spacing:.08em;color:var(--green);margin-bottom:24px}
.visual-label .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#55834e;margin-right:7px}
.screen-frame{padding:7px;background:#22332d;border-radius:11px;box-shadow:0 20px 30px #2543331a;transform:rotate(-2deg)}
.screen-frame img{width:100%;border-radius:5px;aspect-ratio:1014/586}
.visual-caption{display:flex;align-items:center;gap:12px;margin-top:27px}
.visual-caption img{width:38px;height:38px;border-radius:8px}
.visual-caption strong{display:block;color:var(--ink);font-size:14px}
.visual-caption span{display:block;font-size:11px;color:var(--muted)}
.hero-sticker{font-size:11px;border:1px solid #abb9a3;border-radius:99px;padding:4px 10px;margin-left:auto;white-space:nowrap}
.section{padding:72px 0;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
.section-head h2{margin:0}
.section-head .eyebrow{margin-bottom:12px}
.section-head p{margin:0;max-width:420px}
.status{display:inline-flex;align-items:center;gap:7px;border-radius:5px;background:#e4efdc;padding:4px 10px;font-size:11px;font-weight:750;color:#315c30;letter-spacing:.04em}
.status:before{content:"";width:6px;height:6px;background:#4e873d;border-radius:50%}
.status.dev{background:#ece9df;color:#675b3c}
.status.dev:before{background:#a08746}
.product-feature{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);display:grid;grid-template-columns:1.1fr 1fr;overflow:hidden}
.product-copy{padding:42px}
.product-copy h3{font:750 clamp(1.5rem,2.4vw,2.1rem)/1.4 system-ui,sans-serif;letter-spacing:-.04em;margin:16px 0}
.product-copy .actions{margin:24px 0 0}
.product-image{padding:32px;background:#e9eee3;display:flex;flex-direction:column;justify-content:center}
.product-image img{border:6px solid #23352e;border-radius:9px}
.product-image p{font-size:11px;margin:13px 0 0;color:var(--muted)}
.facts{display:flex;gap:20px;flex-wrap:wrap;font-size:12px;margin:24px 0 0;padding:0;list-style:none}
.facts li{margin:0;padding-right:20px;border-right:1px solid var(--line)}
.facts li:last-child{border:0;padding:0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.story{border-top:2px solid var(--ink);padding:24px 0 0}
.story-art{min-height:145px;border-radius:12px;background:#e3e9db;margin:0 0 24px;padding:24px;display:flex;align-items:center;justify-content:center;color:var(--green)}
.story-art .letters{font:600 52px/1.1 Georgia,serif;letter-spacing:-3px}
.story-art img{width:86px;height:86px}
.story-meta{font-size:11px;letter-spacing:.08em;color:var(--muted);margin-bottom:10px}
.story h3 a{color:var(--ink);text-decoration:none}
.story p{font-size:14px}
.story a:hover{text-decoration:underline}
.story-art.chess{background:#e9e4d7;background-image:linear-gradient(90deg,transparent 49%,#c7b994 50%,transparent 51%),linear-gradient(transparent 49%,#c7b994 50%,transparent 51%);background-size:33.333% 33.333%}
.story-art.model{background:#dde6e6}
.story-art svg{width:90px;height:90px}
.about-band{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
.about-band p:last-child{margin-bottom:0}
.support-band{background:var(--ink);color:#e1e9dd;border-radius:var(--radius);padding:42px;display:flex;justify-content:space-between;align-items:center;gap:40px}
.support-band h2{color:white;font-size:25px;margin-bottom:10px}
.support-band p{font-size:14px;margin:0;max-width:43em}
.support-band .actions{margin:0;flex-shrink:0}
.site-footer{border-top:1px solid var(--line);padding:42px 0 24px}
.footer-main{display:flex;justify-content:space-between;gap:35px;margin-bottom:40px}
.footer-main .brand{font-size:22px}
.footer-main p{font-size:12px;margin:14px 0 0}
.footer-links{display:flex;flex-wrap:wrap;gap:13px 24px;max-width:510px;justify-content:flex-end;align-content:start}
.footer-links a{font-size:12px;text-decoration:none}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px}
.page-intro{padding:54px 0 44px}
.page-intro h1{max-width:920px;font-size:clamp(2rem,3.5vw,3.25rem)}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:10px;font-size:11px;margin:0 0 28px;color:var(--muted)}
.breadcrumbs a{color:inherit}
.product-hero{padding-top:46px}
.product-hero h1{font-family:system-ui,sans-serif;line-height:1.16;font-size:clamp(2.5rem,4.7vw,4.3rem)}
.product-hero .subtitle{font-size:22px;color:var(--ink);font-weight:700;line-height:1.7}
.product-hero .status{margin-bottom:20px}
.subnav{display:flex;gap:30px;flex-wrap:wrap;padding:19px 0;border-top:1px solid var(--line);font-size:13px;font-weight:600}
.feature-item{padding:24px 0;border-top:1px solid var(--line)}
.feature-number{font:500 36px/1.2 Georgia,serif;color:#96a78e;margin-bottom:18px}
.feature-item p{font-size:14px;margin-bottom:0}
.format-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:1px solid var(--line);margin-top:36px;padding-top:22px;font-size:13px}
.format-list strong{display:block;color:var(--ink);margin-bottom:8px}
.pricing-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:36px;display:flex;flex-direction:column;align-items:start}
.pricing-card.featured{background:var(--ink);color:#dae7d9;border-color:var(--ink)}
.pricing-card h3{font-size:21px}
.pricing-card.featured h3,.pricing-card.featured .price{color:#fff}
.pricing-card.featured .small{color:#cad7c6}
.price{font:600 44px/1.25 system-ui,sans-serif;color:var(--ink);letter-spacing:-1px;margin:12px 0 8px}
.price span{font-size:17px;margin-left:5px;letter-spacing:0}
.pricing-card ul{font-size:14px;margin-bottom:30px}
.pricing-card .btn{margin-top:auto}
.pricing-card .small{margin-top:14px;margin-bottom:0}
.note{background:var(--soft);border-left:3px solid #7d9870;padding:20px 24px;margin:24px 0;font-size:14px;border-radius:0 8px 8px 0}
.note p:last-child{margin-bottom:0}
.requirements{margin:0;border-top:1px solid var(--line)}
.requirements>div{display:grid;grid-template-columns:160px 1fr;border-bottom:1px solid var(--line);gap:24px;padding:18px 0;font-size:14px}
.requirements dt{font-weight:750;color:var(--ink)}
.requirements dd{margin:0}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:20px 26px 20px 0;font-weight:700;color:var(--ink)}
.faq details p{font-size:14px;padding:0 28px 10px 0;max-width:68em}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:72px;align-items:start;padding-bottom:70px}
.article-body{font-size:16px;line-height:2.05;min-width:0}
.article-body h2{font-size:25px;padding-top:22px;margin-top:35px}
.article-body h3{margin-top:28px}
.article-body figure{margin:30px 0}
.article-body figcaption{font-size:12px;line-height:1.7;margin-top:10px;color:var(--muted)}
.article-body figure img{border-radius:10px;border:1px solid var(--line)}
.article-body blockquote{border-left:3px solid var(--green);margin:28px 0;padding:6px 24px;color:var(--ink)}
.article-sidebar{position:sticky;top:24px;border-top:2px solid var(--ink);padding-top:22px;font-size:13px}
.article-sidebar p{font-weight:700}
.article-sidebar ol{padding-left:20px}
.article-sidebar .btn{margin-top:15px}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.narrow{max-width:820px}
.legal h2{font-size:23px;margin-top:36px}
.legal h3{font-size:18px;margin-top:24px}
.legal{padding-bottom:72px}
.legal p,.legal li{font-size:14px}
.legal .note p{font-size:14px}
.contact-address{font:650 clamp(20px,3vw,32px)/1.5 system-ui,sans-serif;display:inline-block;margin-bottom:24px}
.back-link{font-size:13px}
.link-panel{padding:26px 30px;border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--white)}
.link-panel p{margin:0;font-size:14px}
.link-panel strong{display:block;font-size:17px;margin-bottom:5px;color:var(--ink)}
.steps{counter-reset:step;list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.steps li{counter-increment:step;margin:0;border-top:1px solid var(--line);padding:24px 0}
.steps li:before{content:"0" counter(step);display:block;font:400 34px/1.3 Georgia,serif;color:#7d9870;margin-bottom:16px}
.steps p{font-size:14px}
.video-link{display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid var(--line);border-radius:10px;padding:20px 25px;text-decoration:none;background:var(--white);margin-top:30px}
.video-link span{font-size:13px}
.video-link strong{display:block;font-size:16px}
@media(min-width:1500px){.hero{padding:90px 0 80px}}
@media(max-width:1000px){.container{width:calc(100% - 48px)}.site-nav{gap:17px}.hero-grid{gap:28px}.hero-visual{padding:22px 18px}.hero-sticker{display:none}.product-copy{padding:30px}.about-band{gap:40px}.article-layout{gap:34px;grid-template-columns:minmax(0,1fr) 210px}.support-band{padding:32px;gap:24px}.support-band .actions{flex-shrink:1}}
@media(max-width:760px){.container{width:calc(100% - 36px)}.header-inner{min-height:88px;flex-wrap:wrap;gap:12px;padding:18px 0 14px}.brand{font-size:23px}.brand small{font-size:9px}.brand-mark{width:30px;height:30px}.site-nav{gap:18px;justify-content:space-between;width:100%;padding-top:6px}.site-nav a{font-size:12px}.site-nav .nav-cta{padding:7px 11px}.hero{padding:42px 0}.hero-grid{grid-template-columns:1fr;gap:35px}.hero h1{font-size:clamp(2.1rem,8.8vw,3.6rem);margin-bottom:21px}.hero .intro{font-size:15px}.hero-visual{padding:24px 20px;max-width:590px}.visual-caption{margin-top:24px}.visual-label{margin-bottom:20px}.hero-sticker{display:block}.actions{margin-top:23px;gap:10px}.btn{padding:13px 18px;font-size:13px}.section{padding:46px 0}.section-head{display:block;margin-bottom:25px}.section-head>p,.section-head>.text-link{margin-top:15px}.product-feature{grid-template-columns:1fr}.product-copy{padding:26px}.product-image{padding:25px}.grid-3{grid-template-columns:1fr;gap:32px}.grid-2{grid-template-columns:1fr;gap:20px}.story-art{min-height:150px}.about-band{grid-template-columns:1fr;gap:10px}.support-band{display:block;padding:28px}.support-band .actions{margin-top:22px}.footer-main{display:block;margin-bottom:25px}.footer-links{justify-content:flex-start;margin-top:27px;gap:15px 23px}.footer-bottom{flex-direction:column;gap:7px}.page-intro{padding:30px 0}.page-intro h1{font-size:30px}.article-layout{display:block}.article-sidebar{position:static;margin-top:38px}.article-body{font-size:15px}.article-body h2{font-size:23px}.format-list{grid-template-columns:1fr;gap:18px}.pricing-card{padding:27px}.requirements>div{grid-template-columns:1fr;gap:5px;padding:16px 0}.steps{grid-template-columns:1fr;gap:0}.steps li{display:grid;grid-template-columns:45px 1fr;gap:0 17px}.steps li:before{grid-row:span 2;font-size:29px}.steps p{grid-column:2;margin-bottom:0}.steps h3{margin-top:0}.subnav{gap:13px 24px;font-size:12px}.product-hero h1{font-size:42px}.product-hero .subtitle{font-size:19px}.link-panel{display:block;padding:24px}.link-panel .btn{margin-top:20px}.contact-address{font-size:23px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
@media(max-width:760px){.hero-sticker{display:none}}

/* Keep the original YouTube banner whole at every viewport width. */
.channel-section{padding:0 0 56px}
.channel-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:20px}
.channel-heading .eyebrow{margin-bottom:7px}
.channel-heading h2{font-size:clamp(1.25rem,2vw,1.65rem);margin:0}
.channel-banner{display:block}
.channel-banner img{display:block;width:100%;height:auto;object-fit:contain}
.channel-caption{margin:12px 0 0}