:root{--purple:#6c4cf1;--deep:#4326b8;--cyan:#43d7e8;--yellow:#ffd45a;--navy:#17213c;--pale:#f7f5ff;--line:#cec5ff;--green:#17b86a;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:86px}body{margin:0;color:var(--navy);font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.7;overflow-x:hidden}img{max-width:100%;height:auto}a{color:inherit;text-decoration:none}.wrap{width:min(1380px,calc(100% - 48px));margin-inline:auto}.skip-link{position:fixed;z-index:1000;top:8px;left:8px;padding:10px 16px;background:#fff;border:2px solid var(--purple);transform:translateY(-160%)}.skip-link:focus{transform:none}.site-header{position:sticky;z-index:100;top:0;background:rgba(255,255,255,.96);border-bottom:1px solid #e9e5ff;backdrop-filter:blur(12px)}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:grid;grid-template-columns:42px auto;grid-template-rows:auto auto;align-items:center;column-gap:10px;line-height:1.12;white-space:nowrap}.brand img{grid-row:1/3;width:42px;height:42px;object-fit:contain}.brand span{color:var(--deep);font-size:25px;font-weight:900}.brand small{font-size:10px;color:#66637a}.global-nav{display:flex;align-items:center;gap:27px;font-size:13px;font-weight:800}.global-nav a{white-space:nowrap}.global-nav .gift{padding:11px 20px;color:#fff;border-radius:999px;background:linear-gradient(135deg,#7458f4,#4326b8);box-shadow:0 5px 0 #191d4b}.menu-button{display:none}.breadcrumb{display:flex;align-items:center;gap:12px;padding-block:13px;color:#66637a;font-size:12px}.breadcrumb a{color:var(--deep);font-weight:800}.article-hero{overflow:hidden;background:radial-gradient(circle at 80% 30%,#fff 0 18%,transparent 45%),linear-gradient(90deg,#fff 0 58%,#f5f8f2 100%)}.hero-inner{min-height:470px;display:grid;grid-template-columns:58% 42%;align-items:end}.hero-copy{z-index:2;padding:28px 0 36px}.chapter-label{display:flex;gap:14px;margin:0 0 12px}.chapter-label span{padding:7px 22px;color:#fff;border-radius:999px;background:linear-gradient(135deg,#7254ee,#4427b8);font-size:14px;font-weight:900}.hero-copy h1{margin:0;font-size:clamp(34px,3.25vw,52px);line-height:1.28;letter-spacing:.02em}.hero-copy h1 span{display:block}.hero-copy>p:not(.chapter-label){max-width:780px;margin:13px 0 18px;font-weight:600}.hero-meta{display:grid;grid-template-columns:repeat(4,1fr);margin:0 0 20px;padding:0;background:#fff;border:1.5px solid var(--line);border-radius:14px;box-shadow:0 7px 24px rgba(67,38,184,.06)}.hero-meta div{padding:10px 16px;border-right:1px solid #ddd7fb}.hero-meta div:last-child{border:0}.hero-meta dt{font-size:11px}.hero-meta dd{margin:1px 0 0;font-size:16px;font-weight:900}.ai-mark{display:inline-grid;width:26px;height:26px;place-items:center;color:#fff;border-radius:7px;background:#12a66a;font-size:10px}.primary-button,.compact-button{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:58px;padding:13px 28px;color:#fff;border-radius:999px;background:linear-gradient(135deg,#7457ef,#4326b8);box-shadow:0 6px 0 #201b55;font-weight:900;letter-spacing:.04em;transition:transform .2s,box-shadow .2s}.primary-button:hover,.compact-button:hover{transform:translateY(-3px);box-shadow:0 9px 0 #201b55}.hero-copy>.primary-button{max-width:530px}.hero-character{height:470px;display:flex;align-items:flex-end;justify-content:center}.hero-character img{width:min(100%,390px);max-height:455px;object-fit:contain;object-position:center bottom}.section{padding-block:20px}.quick-start{background:linear-gradient(180deg,#faf9ff,#fff)}.quick-grid{display:grid;grid-template-columns:38% 62%;gap:18px}.goal-panel,.prep-panel{padding:16px 22px;border:2px solid #b7a9fb;border-radius:18px;background:#fff}.goal-panel h2,.prep-panel h2{margin:0 0 12px;color:var(--deep);font-size:21px;text-align:center}.check-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}.check-list li,.completion-grid li{position:relative;padding:9px 12px 9px 42px;border:1px solid #d9d3f3;border-radius:10px;background:#fff;font-weight:700}.check-list li::before,.completion-grid li::before{position:absolute;left:13px;top:11px;display:grid;width:20px;height:20px;place-items:center;color:#fff;border-radius:50%;background:var(--green);content:"✓";font-size:12px}.prep-list{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:0;padding:0;list-style:none}.prep-list li{min-width:0;display:grid;place-items:center;padding:8px;border:1px solid #d7d0f6;border-radius:10px;text-align:center;font-size:12px;font-weight:800}.prep-list img{width:54px;height:36px;object-fit:contain;object-position:center}.compact-button{max-width:520px;min-height:46px;margin:10px auto 0;padding:8px 24px}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:22px;padding-block:18px}.lesson-main{position:relative;display:grid;gap:16px;padding-left:42px}.lesson-main::before{position:absolute;left:13px;top:20px;bottom:20px;width:2px;background:#b5a8f9;content:""}.lesson-step{position:relative;padding:17px 20px;border:2px solid #c8bfff;border-radius:15px;background:#fff;box-shadow:0 5px 16px rgba(67,38,184,.05)}.lesson-step::before{position:absolute;left:-38px;top:24px;width:14px;height:14px;border:5px solid var(--purple);border-radius:50%;background:#fff;content:""}.lesson-step header{display:flex;align-items:center;gap:12px}.lesson-step header span{padding:4px 13px;color:#fff;border-radius:999px;background:linear-gradient(135deg,#7457ef,#4326b8);font-size:12px;font-weight:900}.lesson-step h2{margin:0;font-size:21px}.lesson-step>p{margin:5px 0 11px}.chat-window{padding:10px;border:1px solid #cfd0df;border-radius:10px;background:#fff}.chat-window>div{display:flex;justify-content:space-between;margin-top:7px;padding:9px 13px;color:#8b8a96;border:1px solid #ddd;border-radius:8px}.chat-window.answer{position:relative;margin-top:10px;padding-right:45px}.chat-window.answer>span{position:absolute;right:12px;bottom:12px;display:grid;width:28px;height:28px;place-items:center;color:#fff;border-radius:50%;background:#111}.chat-window.response{max-width:80%}.chat-window.response p,.chat-window.response ol{margin:5px 0}.copy-box{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:11px 13px;background:#fff;border:1.5px solid #cfc6fb;border-radius:10px}.copy-box p{margin:0;font-size:17px;font-weight:900}.copy-box button{flex:0 0 auto;padding:8px 15px;color:var(--purple);background:#fff;border:1.5px solid #b8aafa;border-radius:9px;font:inherit;font-weight:900;cursor:pointer}.copy-box button.copied{color:#fff;background:var(--green);border-color:var(--green)}.done-check{display:flex;align-items:center;gap:8px;width:max-content;max-width:100%;margin:10px 0 0 auto;padding:9px 13px;border:1px solid #d8d1f4;border-radius:9px;font-size:13px;font-weight:800}.done-check input{width:20px;height:20px;accent-color:var(--green)}.with-sai{padding-right:210px}.step-sai{position:absolute;right:12px;top:70px;width:185px;height:auto}.desktop-toc{position:sticky;top:92px;align-self:start;overflow:hidden;padding:20px;border:2px solid #c8bfff;border-radius:18px;background:#fff}.desktop-toc h2{margin:0 0 12px;color:var(--deep);font-size:18px;text-align:center}.desktop-toc ol{display:grid;gap:14px;margin:0;padding:0;list-style:none}.desktop-toc a{display:grid;padding:9px;border-left:4px solid #d2caff;font-size:12px}.desktop-toc a:hover{border-color:var(--purple);background:var(--pale)}.desktop-toc b{color:var(--deep)}.park-route{height:270px;margin:20px -20px -20px;background:linear-gradient(rgba(255,255,255,.08),rgba(255,255,255,.12)),url("assets/parts-v01/next-park-v01.png") center/cover no-repeat}.mobile-toc{display:none}.practice{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;padding:18px;border:2px solid #bfb2fa;border-radius:18px;background:#fff}.practice h2,.sample-answer h2{margin:0;color:var(--deep);font-size:20px}.practice p{margin:4px 0 12px}.copy-box.large{margin-top:12px}.copy-box.large strong{padding:2px 8px;background:#fff1b9;border-radius:6px}.sample-answer{padding-left:18px;border-left:1px dashed #9c8af3}.sample-answer ol{margin:10px 0}.troubles{padding:18px;border:1px solid #ddd7f7;border-radius:18px}.section-title{display:flex;align-items:center;gap:20px}.section-title h2{margin:0;color:var(--deep);font-size:21px}.section-title p{margin:0}.trouble-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px 70px;margin-top:10px}.trouble-grid details,.faq details{border:1.5px solid #cfc6fb;border-radius:9px;background:#fff}.trouble-grid summary,.faq summary{padding:9px 14px;color:var(--deep);font-weight:900;cursor:pointer}.trouble-grid details p,.faq details p{margin:0;padding:0 14px 12px}.evidence{display:grid;grid-template-columns:1fr 1fr;gap:18px}.tested,.memo{padding:17px;border:1.5px solid #cfc6fb;border-radius:16px}.tested h2,.memo h2{margin:0 0 10px;color:var(--deep);font-size:19px}.tested h2 small{margin-left:12px;font-size:10px;letter-spacing:.08em}.check-list.purple li{padding-block:4px;border:0}.check-list.purple li::before{top:7px;background:var(--purple)}.memo{border-color:#8fd8e4}.memo p{margin:0;padding:13px;border:1px solid #9ddbe5;border-radius:10px}.completion{display:grid;grid-template-columns:320px 1fr;align-items:end;gap:22px;padding:18px;border:1.5px solid #d8d1f4;border-radius:18px}.completion-sai{align-self:end}.completion-sai img{display:block;width:100%;height:130px;object-fit:contain;object-position:left bottom}.completion h2{margin:0 0 12px;color:var(--deep);font-size:22px}.completion-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0;padding:0;list-style:none}.summary{padding:14px 20px;border:1px solid #f1df9f;border-radius:16px;background:linear-gradient(90deg,#fffdf7,#fff)}.summary h2{margin:0;color:var(--deep);font-size:19px;text-align:center}.summary ol{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:6px 0 0;padding:0;list-style:none}.summary li{font-weight:800}.summary b{margin-right:10px;font-size:26px}.next-article{display:grid;grid-template-columns:1fr 36%;align-items:end;overflow:hidden;margin-top:18px;border:3px solid var(--purple);border-radius:18px}.next-article>div{padding:17px 22px}.next-article>div>span{display:inline-block;padding:4px 12px;color:#fff;border-radius:7px;background:var(--purple);font-weight:900}.next-article h2{margin:7px 0 3px;color:var(--deep);font-size:24px}.next-article p{margin:0 0 10px}.next-article .primary-button{max-width:620px;min-height:50px}.next-article>img{width:100%;height:190px;object-fit:cover;object-position:center}.next-paths{padding-block:12px}.next-paths h2{margin:0;color:var(--deep);font-size:17px}.next-paths>div{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.next-paths a{display:grid;grid-template-columns:35px 1fr;padding:11px 15px;border:1px solid #d8d1f4;border-radius:12px}.next-paths b,.next-paths small{grid-column:2}.free-gift{display:grid;grid-template-columns:1fr 430px 100px;align-items:center;gap:18px;padding:13px 18px;border:2px solid #91d8b2;border-radius:16px}.free-gift h2{margin:0;color:#07964c;font-size:20px}.free-gift p{margin:3px 0}.free-gift>a{display:flex;justify-content:space-between;padding:10px 20px;color:#fff;border-radius:999px;background:#12b85c;font-weight:900}.free-gift img{width:80px;height:65px;object-fit:contain}.article-info{padding-block:12px;color:#68667a;font-size:11px;text-align:center}.faq{border:1px solid #dcd6f8;border-radius:16px}.faq h2{margin:0 0 10px;color:var(--deep);font-size:20px}.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.site-footer{padding:18px 0;color:#fff;background:linear-gradient(110deg,#311d8f,#15245a)}.footer-inner{display:grid;grid-template-columns:250px 1fr;align-items:center;gap:20px}.footer-inner>div{display:flex;flex-direction:column}.footer-inner b{font-size:23px}.footer-inner small{font-size:10px}.footer-inner nav{display:flex;justify-content:center;gap:22px;font-size:12px}.footer-inner p{grid-column:1/-1;margin:0;text-align:center;font-size:10px}.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}.reveal.is-visible{opacity:1;transform:none}
@media(max-width:1080px){.wrap{width:min(100% - 32px,920px)}.global-nav{gap:15px;font-size:12px}.brand small{display:none}.hero-inner{grid-template-columns:62% 38%}.hero-meta{grid-template-columns:1fr 1fr}.hero-meta div:nth-child(2){border-right:0}.hero-meta div:nth-child(-n+2){border-bottom:1px solid #ddd7fb}.quick-grid{grid-template-columns:1fr}.lesson-layout{grid-template-columns:minmax(0,1fr) 225px}.free-gift{grid-template-columns:1fr 330px 80px}}
@media(max-width:820px){.header-inner{min-height:68px}.brand{grid-template-columns:36px auto}.brand img{width:36px;height:36px}.brand span{font-size:21px}.menu-button{display:grid;width:48px;height:46px;padding:9px;border:0;background:transparent;place-content:center;gap:5px}.menu-button span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.menu-button i{display:block;width:31px;height:3px;border-radius:4px;background:var(--navy)}.global-nav{position:absolute;top:68px;right:16px;display:none;width:min(330px,calc(100vw - 32px));padding:16px;background:#fff;border:2px solid #d4cbff;border-radius:16px;box-shadow:0 18px 40px rgba(23,33,60,.18)}.global-nav.open{display:grid}.global-nav a{padding:8px 10px}.global-nav .gift{text-align:center}.article-hero{background:linear-gradient(180deg,#fff,#f8f8f4)}.hero-inner{grid-template-columns:1fr;position:relative;min-height:620px}.hero-copy{padding-top:14px;padding-bottom:260px}.hero-copy h1{font-size:clamp(31px,6vw,44px)}.hero-character{position:absolute;right:0;bottom:0;width:48%;height:340px;justify-content:flex-end}.hero-character img{max-height:340px}.hero-copy>.primary-button{position:absolute;z-index:4;left:0;right:0;bottom:18px;max-width:none}.quick-grid{grid-template-columns:1fr 1fr}.prep-list{grid-template-columns:repeat(3,1fr)}.lesson-layout{display:block}.desktop-toc{display:none}.mobile-toc{display:block;margin-top:12px;border:2px solid #c8bfff;border-radius:12px}.mobile-toc summary{padding:10px 15px;color:var(--deep);font-weight:900}.mobile-toc ol{margin:0;padding:0 35px 12px}.practice,.evidence{grid-template-columns:1fr}.sample-answer{padding:0;border:0}.completion{grid-template-columns:230px 1fr}.next-article{grid-template-columns:1fr 34%}.free-gift{grid-template-columns:1fr 260px 70px}.footer-inner{grid-template-columns:1fr}.footer-inner nav{flex-wrap:wrap}.footer-inner p{grid-column:auto}}
@media(max-width:680px){body{line-height:1.62}.wrap{width:calc(100% - 28px)}.breadcrumb{overflow-x:auto;white-space:nowrap}.hero-inner{min-height:620px}.hero-copy{padding-bottom:245px}.chapter-label{gap:8px}.chapter-label span{padding:5px 15px;font-size:12px}.hero-copy h1{font-size:29px;line-height:1.32}.hero-copy>p:not(.chapter-label){font-size:13px}.hero-meta{width:68%;margin-bottom:12px}.hero-meta div{padding:7px 10px}.hero-meta dt{font-size:9px}.hero-meta dd{font-size:13px}.hero-character{width:51%;height:345px}.hero-character img{max-height:345px}.hero-copy>.primary-button{font-size:15px}.quick-grid{display:block}.goal-panel,.prep-panel{margin-bottom:12px;padding:14px}.goal-panel h2,.prep-panel h2{font-size:18px}.prep-list{grid-template-columns:repeat(3,1fr);gap:6px}.prep-list li{padding:6px 3px;font-size:10px}.prep-list img{width:43px;height:30px}.lesson-main{gap:12px;padding-left:23px}.lesson-main::before{left:4px}.lesson-step{padding:14px}.lesson-step::before{left:-24px;width:12px;height:12px;border-width:4px}.lesson-step header{align-items:flex-start}.lesson-step h2{font-size:18px}.lesson-step>p{font-size:13px}.copy-box{align-items:flex-end}.copy-box p{font-size:14px}.chat-window.response{max-width:none}.with-sai{padding-right:14px;padding-bottom:210px}.step-sai{top:auto;right:6px;bottom:67px;width:220px}.done-check{font-size:11px}.with-sai .done-check{position:absolute;right:14px;left:auto;bottom:14px;width:52%;margin:0}.practice{display:block;padding:14px}.practice>div+div{margin-top:18px}.troubles{padding:14px}.section-title{display:block}.section-title p{font-size:12px}.trouble-grid{grid-template-columns:1fr;gap:7px}.completion{display:block;padding:14px}.completion-sai img{height:115px;object-position:center bottom}.completion h2{text-align:center;font-size:19px}.completion-grid{grid-template-columns:1fr}.summary ol{grid-template-columns:1fr}.next-article{display:block;position:relative;padding-bottom:115px}.next-article>div{padding:14px}.next-article h2{font-size:20px}.next-article>img{position:absolute;right:0;bottom:0;width:55%;height:130px}.next-paths>div{grid-template-columns:1fr}.free-gift{grid-template-columns:1fr 70px;padding:13px}.free-gift>a{grid-column:1/-1;grid-row:2}.free-gift img{grid-column:2;grid-row:1}.faq-grid{grid-template-columns:1fr}.footer-inner nav{justify-content:flex-start;gap:8px 16px}.footer-inner p{text-align:left}.reveal{transform:translateY(10px)}}
@media(max-width:390px){.brand span{font-size:18px}.hero-copy h1{font-size:26px}.hero-inner{min-height:640px}.hero-copy{padding-bottom:250px}.hero-meta{width:72%}.hero-character{width:55%;height:315px}.hero-character img{max-height:315px}.prep-list{grid-template-columns:1fr 1fr}.prep-list li:last-child{grid-column:1/-1}.lesson-step header span{padding:3px 9px;font-size:10px}.copy-box{display:block}.copy-box button{width:100%;margin-top:8px}.with-sai{padding-bottom:205px}.with-sai .done-check{width:58%}.step-sai{width:205px}.completion h2{font-size:18px}.summary{padding:12px}.next-article>img{width:62%}.primary-button{padding-inline:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.primary-button,.compact-button{transition:none}}

/* v02 design-source fidelity corrections */
.hero-character{align-items:stretch;overflow:hidden}
.hero-character img{width:100%;height:100%;max-height:none;object-fit:cover;object-position:center}
.prep-list img{display:block;width:58px;height:48px;object-fit:contain;object-position:center}
.park-route{background-image:url("assets/parts-v02/sidebar-park-route-v02.png");background-position:center bottom;background-size:cover}
.completion-sai{position:relative;height:145px;overflow:hidden}
.completion-sai p{position:absolute;z-index:2;left:4px;top:18px;margin:0;padding:10px 16px;color:var(--deep);border:2px solid #a895ff;border-radius:16px;background:#fff;font-size:14px;font-weight:900;line-height:1.45}
.completion-sai p::after{position:absolute;right:-13px;top:50%;width:22px;height:22px;background:#fff;border-top:2px solid #a895ff;border-right:2px solid #a895ff;content:"";transform:translateY(-50%) rotate(45deg)}
.completion-sai img{position:absolute;right:0;bottom:-115px;display:block;width:165px;height:auto;max-width:none;object-fit:contain}
.free-gift img{display:block;width:72px;height:auto;max-height:76px;object-fit:contain}

@media (min-width:681px) and (max-width:1080px){
  .hero-meta{grid-template-columns:repeat(4,minmax(0,1fr))}
  .hero-meta div:nth-child(2){border-right:1px solid #ddd7fb}
  .hero-meta div:nth-child(-n+2){border-bottom:0}
  .hero-meta div:last-child{border-right:0}
}

@media(max-width:820px){
  .hero-character img{object-position:center}
}

@media(max-width:680px){
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-meta div:nth-child(2){border-right:0}
  .hero-meta div:nth-child(-n+2){border-bottom:1px solid #ddd7fb}
  .prep-list img{width:48px;height:42px}
  .completion-sai{height:150px;margin-bottom:8px}
  .completion-sai p{left:calc(50% - 150px);top:24px}
  .completion-sai img{right:calc(50% - 150px);bottom:-108px;width:170px}
  .free-gift img{width:64px;max-height:70px}
}

.completion-sai img{bottom:-141px}
@media(max-width:680px){.completion-sai img{bottom:-145px}}
.park-route{background:none}
.park-route img{display:block;width:100%;height:100%;object-fit:cover;object-position:center bottom}
@media(max-width:390px){.lesson-main,.lesson-step,.copy-box,.chat-window{min-width:0}.lesson-main{width:100%}.lesson-step{max-width:100%}}

/* v03 mobile flow: keep text, metadata, illustration and CTA in separate rows */
@media(max-width:680px){
  .hero-inner{display:flex;flex-direction:column;min-height:0;padding-bottom:18px}
  .hero-copy{order:1;padding:14px 0 0}
  .hero-meta{width:100%;grid-template-columns:1fr}
  .hero-meta div{border-right:0;border-bottom:1px solid #ddd7fb}
  .hero-meta div:nth-child(2){border-right:0}
  .hero-meta div:nth-child(-n+2){border-bottom:1px solid #ddd7fb}
  .hero-meta div:last-child{border-bottom:0}
  .hero-character{position:static;order:2;width:100%;height:auto;margin-top:16px;border-radius:18px;aspect-ratio:987/915}
  .hero-character img{width:100%;height:100%;object-fit:cover;object-position:center}
  .hero-copy>.primary-button{position:static;max-width:none;margin-top:16px}
  .lesson-step::before{left:-29px}
  .next-article{display:flex;flex-direction:column;padding-bottom:0}
  .next-article>img{position:static;order:2;width:100%;height:auto;max-height:190px;object-fit:cover;object-position:center}
}