:root{--ink:#17364a;--sub:#596e78;--line:#e4ebe7;--warm:#f8f6f0;--orange:#e89d38;--orange-dark:#b9671d;--bg:#fffdfa;--focus:#0b7776}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:4px}.shell{width:min(790px,calc(100% - 42px));margin:0 auto}.site-header{background:#fff;border-bottom:1px solid #ebf0ec}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:80px}.brand{display:flex;gap:10px;align-items:center;flex-shrink:0}.brand-mark{width:42px;height:42px}.brand strong{font-size:23px;line-height:1.2;letter-spacing:-.06em;display:block;font-weight:850;white-space:nowrap}.brand b{color:var(--orange-dark)}.brand small{display:block;color:#617b7a;font-size:10px;font-weight:750;letter-spacing:.16em;text-transform:uppercase}.header-skip{font-size:12px;color:#85959b;text-align:right}.header-skip span{text-decoration:underline;text-underline-offset:3px}.header-skip:hover{color:var(--ink)}.presentation{text-align:center;padding:48px 0 56px}.section-label{font-size:11px;color:#58817b;font-weight:850;letter-spacing:.16em;text-transform:uppercase;margin-bottom:15px}.presentation h1{font-size:clamp(30px,4.5vw,47px);letter-spacing:-.045em;line-height:1.14;margin:0 auto 18px;font-weight:850;max-width:765px;text-wrap:balance}.summary{font-size:clamp(16px,2vw,18px);color:var(--sub);max-width:680px;margin:0 auto 30px;line-height:1.65;text-wrap:pretty}.video-shell{width:100%;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:linear-gradient(140deg,#0d3144,#1e5060 72%,#346f6c);box-shadow:0 19px 44px rgba(20,48,54,.12);position:relative}.video-shell iframe{width:100%;height:100%;border:0;display:block}.placeholder{height:100%;width:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:22px;padding:25px;color:#e5eef0;font-size:14px}.play-circle{display:grid;place-items:center;width:78px;height:78px;border-radius:50%;background:var(--orange);box-shadow:0 12px 32px #0b253c70}.play-circle span{color:#193343;font-size:28px;margin-left:4px}.under-video{padding:23px 0 0}.takeaway{color:#47636a;font-size:15px;line-height:1.6;margin:0 auto 23px;max-width:690px}.action-row{display:flex;justify-content:center;align-items:center;gap:24px}.next-button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-width:212px;min-height:55px;background:#e8a043;color:#172f3d;font-weight:800;border:0;border-radius:11px;padding:14px 24px;cursor:pointer;font-size:17px;box-shadow:0 6px 18px #df9c3d30;transition:background .12s,transform .12s}.next-button:hover{background:#f4af51;transform:translateY(-1px)}.back-button{background:none;color:#7e9397;border:0;cursor:pointer;font-size:13px;text-decoration:underline;text-underline-offset:3px;padding:8px}.back-button:hover{color:var(--ink)}.subtle-skip{display:block;color:#86969a;font-size:12px;margin:20px auto 0;text-decoration:underline;text-decoration-color:#d1dbda;text-underline-offset:3px}.subtle-skip:hover{color:var(--ink)}.finish{border-top:1px solid var(--line);padding-top:28px;margin:36px 0 0}.finish h2{font-size:30px;letter-spacing:-.03em;margin:0 0 6px}.finish>p{color:var(--sub);max-width:610px;margin:0 auto 19px}.plan-glance{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:22px}.plan-glance span{background:#f3f7f4;border:1px solid #e1e9e3;color:#35545a;border-radius:9px;padding:10px 13px;font-size:13px}.join-button{min-width:0;max-width:100%}.share-more{max-width:690px;margin:33px auto 0;text-align:left;border:1px solid var(--line);background:#f9fbf8;border-radius:12px;padding:16px 20px}.share-more summary{cursor:pointer;font-weight:700;color:#416469;font-size:14px}.share-more p{font-size:13px;color:#64747a;margin:12px 0 0;line-height:1.65}.example-url{font-weight:750;color:var(--ink);font-size:14px;word-break:break-word;padding:11px 12px;margin-top:12px;background:#fff;border:1px solid var(--line);border-radius:8px}.site-footer{padding:24px 0 30px;border-top:1px solid #e6eeea;display:flex;align-items:center;gap:12px;justify-content:space-between;color:#8a999a;font-size:11px}.site-footer span:last-child{max-width:490px;text-align:right}
@media(max-width:640px){.shell{width:calc(100% - 30px)}.header-inner{min-height:68px}.brand-mark{width:36px;height:36px}.brand strong{font-size:20px}.header-skip{font-size:11px}.presentation{padding:32px 0 40px}.presentation h1{font-size:clamp(30px,8vw,42px)}.summary{font-size:16px;margin-bottom:22px}.video-shell{border-radius:10px}.play-circle{width:62px;height:62px}.play-circle span{font-size:22px}.placeholder{font-size:12px;gap:14px}.takeaway{font-size:14px}.plan-glance{flex-direction:column}.action-row{gap:16px}.next-button{font-size:16px;min-height:52px;min-width:200px}.finish h2{font-size:27px}.site-footer{flex-direction:column;text-align:center;gap:5px}.site-footer span:last-child{text-align:center}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
[hidden]{display:none!important}