:root{--bg:#f8f8f5;--surface:#efefea;--text:#20211f;--muted:#62645e;--line:#d9dad2;--accent:#b84323;--button:#fdfcf9;--radius:16px;color-scheme:light dark}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font-family:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}header,main,footer{max-width:1240px;margin:auto;padding-inline:40px}header{height:96px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-size:23px;font-weight:800;letter-spacing:-1.1px;white-space:nowrap}.brand-mark{color:var(--accent);margin-inline-start:8px}nav{display:flex;gap:30px;margin-inline-start:auto;font-size:14px}nav a:hover{color:var(--accent)}select{background:transparent;border:1px solid var(--line);border-radius:8px;padding:10px;color:var(--text);max-width:140px}option{background:var(--bg)}section{padding-block:76px}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-block:44px 70px;min-height:600px}.eyebrow{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:1.8px;text-transform:uppercase;margin:0 0 22px}h1{font-size:clamp(44px,5.6vw,76px);line-height:1.03;letter-spacing:-3.5px;margin:0;max-width:660px;font-weight:650}h2{font-size:clamp(30px,3.4vw,44px);line-height:1.12;letter-spacing:-1.7px;margin:0 0 20px;font-weight:600}p{line-height:1.7}.intro{font-size:18px;color:var(--muted);max-width:470px;margin:26px 0 30px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:32px;border:0;border-radius:9px;background:var(--accent);color:var(--button);padding:18px 23px;font-size:15px;font-weight:600;white-space:nowrap;transition:transform .2s}.button:hover{transform:translateY(-2px)}.button:active{transform:scale(.98)}.hero-media{position:relative;height:505px;isolation:isolate}.hero-poster{position:absolute;padding:0;border:0;background:var(--surface);border-radius:var(--radius);overflow:hidden;width:235px;box-shadow:0 15px 40px #25251b20}.hero-poster img{display:block;width:100%;height:auto}.hero-poster.back{left:10px;top:10px;transform:rotate(-8deg)}.hero-poster.front{right:5px;bottom:0;transform:rotate(7deg)}.play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;width:58px;height:58px;background:#191919cc;color:#fff;display:grid;place-items:center;font-size:18px}.section-intro{max-width:620px;color:var(--muted);margin:0 0 32px}.work{border-top:1px solid var(--line)}.filmstrip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.film{margin:0}.film button{position:relative;display:block;padding:0;border:0;width:100%;background:var(--surface);border-radius:var(--radius);overflow:hidden}.film img{width:100%;height:auto;aspect-ratio:9/16;display:block;object-fit:cover;transition:transform .3s}.film button:hover img{transform:scale(1.035)}.film figcaption{font-size:13px;color:var(--muted);margin-top:12px;display:flex;justify-content:space-between;gap:4px}.results{display:grid;grid-template-columns:.8fr 1.4fr;gap:48px;align-items:center;border-top:1px solid var(--line)}.results-copy>p{color:var(--muted)}.metric{margin:32px 0 22px;display:grid;gap:8px}.metric strong{font-size:44px;letter-spacing:-2px;font-weight:500}.metric span,.small{font-size:12px;line-height:1.7;color:var(--muted)}.proof-main{padding:0;border:0;background:#282828;border-radius:var(--radius);overflow:hidden;display:block;width:100%}.proof img{width:100%;height:auto;display:block}.proof-caption{display:flex;justify-content:space-between;gap:20px;margin-top:16px;font-size:12px;color:var(--muted)}.text-button{border:0;padding:0;background:none;text-decoration:underline;text-underline-offset:4px;font-size:inherit}.all-results{grid-column:1/-1;display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.all-results[hidden]{display:none}.all-results button{padding:0;border:0;background:none}.all-results img{width:100%;border-radius:12px;display:block}.all-results p{font-size:13px;color:var(--muted)}.guide{display:grid;grid-template-columns:1.2fr .8fr;gap:90px;border-top:1px solid var(--line)}.chapter{padding:22px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:36px 1fr;gap:12px}.chapter-num{font-size:12px;color:var(--accent);padding-top:4px}.chapter h3{margin:0 0 7px;font-size:18px;font-weight:500}.chapter p{margin:0;color:var(--muted);font-size:14px}.purchase{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:36px;align-self:start;position:sticky;top:30px}.pack-label{font-size:15px}.price{font-size:64px;letter-spacing:-3px;margin-top:26px;white-space:nowrap}.price span{font-size:12px;letter-spacing:0;color:var(--muted)}.purchase>p{color:var(--muted);font-size:13px}.purchase ul{list-style:none;margin:28px 0;padding:0}.purchase li{font-size:14px;margin:16px 0;display:flex;gap:12px}.purchase li:before{content:'✓';color:var(--accent)}.buy{width:100%;margin:8px 0}.faq{display:grid;grid-template-columns:1fr 1.5fr;gap:60px;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:22px 0}summary{cursor:pointer;line-height:1.5;font-size:16px}details p{font-size:14px;color:var(--muted)}details a{color:var(--accent);text-decoration:underline}.contact{border-top:1px solid var(--line);padding-block:56px}.contact p{color:var(--muted)}.contact-link{font-size:24px;text-decoration:underline;text-underline-offset:6px}footer{padding-block:30px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:22px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}footer div{display:flex;gap:25px}footer p{width:100%;margin:0}dialog{border:1px solid var(--line);border-radius:var(--radius);padding:36px;background:var(--bg);color:var(--text);max-width:min(1000px,94vw);max-height:92dvh}dialog::backdrop{background:#111a;backdrop-filter:blur(5px)}.close{position:absolute;right:10px;top:6px;font-size:30px;background:var(--bg);border:0;border-radius:50%;width:36px;height:36px;z-index:1}#media-content video{display:block;max-height:79dvh;max-width:100%;width:auto;margin:auto}#media-content img{display:block;max-width:100%;max-height:78dvh;object-fit:contain}#notice-dialog{max-width:560px}#notice-dialog p{color:var(--muted);white-space:pre-line}.skip{position:fixed;top:-60px;left:20px;background:var(--bg);padding:12px;z-index:5}.skip:focus{top:10px}[dir=rtl] h1,[dir=rtl] h2{letter-spacing:0}[dir=rtl] .hero-media{direction:ltr}@media(prefers-color-scheme:dark){:root{--bg:#1c1e1c;--surface:#262925;--text:#f2f3ed;--muted:#afb4a9;--line:#3f443b;--accent:#f5a184;--button:#24150f}}@media(max-width:1000px){.hero-poster{width:195px}.hero-media{height:435px}.hero{min-height:520px}.guide{gap:40px}.purchase{padding:26px}.price{font-size:55px}.results{gap:28px}}@media(max-width:767px){header,main,footer{padding-inline:22px}header{height:80px;gap:12px}.brand{font-size:19px}nav{display:none}select{max-width:115px;font-size:12px}.hero{grid-template-columns:1fr;gap:34px;padding-top:30px}.hero-copy{max-width:550px}h1{font-size:51px;letter-spacing:-2.4px}.intro{font-size:16px}.hero-media{height:440px;width:min(100%,420px);margin:auto}.hero-poster{width:210px}.filmstrip{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;padding-bottom:12px}.film{flex:0 0 43%;scroll-snap-align:start}.results,.guide,.faq{grid-template-columns:1fr;gap:32px}section{padding-block:48px}.purchase{position:static}.results-copy{max-width:500px}.metric strong{font-size:40px}.all-results{grid-template-columns:1fr}.proof-caption{flex-wrap:wrap}.faq{gap:10px}.price{font-size:64px}}@media(max-width:380px){h1{font-size:44px}.hero-media{height:380px}.hero-poster{width:180px}.brand{font-size:16px}header,main,footer{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
/* Optional preview override; normal visitors follow their system theme. */
:root[data-theme=light]{--bg:#f8f8f5;--surface:#efefea;--text:#20211f;--muted:#62645e;--line:#d9dad2;--accent:#b84323;--button:#fdfcf9;color-scheme:light}
@media(min-width:1100px){h1{font-size:62px;letter-spacing:-2.8px}}
/* YouTube-led visual identity: official red mark, accessible red actions. */
:root{--accent:#cc151c;--button:#fffafa;--tint:#fceeed}
:root[data-theme=light]{--accent:#cc151c;--button:#fffafa;--tint:#fceeed}
.hero{position:relative;gap:34px;padding-top:50px;padding-bottom:60px}
.hero-eyebrow{display:flex;align-items:center;gap:12px;letter-spacing:1.3px;font-size:11px}
.hero-eyebrow img{flex:none}
h1{font-size:clamp(44px,4.4vw,62px);letter-spacing:-2.6px;line-height:1.08}
.headline-accent{display:block;color:var(--accent);margin-top:7px}
.hero-media:before{content:'';position:absolute;inset:28px -5px 8px 20px;background:var(--tint);border-radius:45% 45% 18% 45%;z-index:-1;transform:rotate(-6deg)}
.hero-poster.front{right:12px;bottom:10px;transform:rotate(5deg)}
.hero-poster.back{left:16px;transform:rotate(-7deg)}
.button{box-shadow:0 6px 18px #cc151c18}.button:hover{box-shadow:0 9px 22px #cc151c2b}
.play{background:#cc151cef;color:#fffafa;box-shadow:0 3px 14px #16161626}
.platform-workflow{display:grid;grid-template-columns:1fr auto 1fr auto 1.4fr;align-items:center;gap:32px;padding:30px 36px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin:12px 0 28px}
.platform-workflow a{display:grid;gap:9px}.platform-workflow a>span{font-size:12px;color:var(--muted)}
.platform-workflow strong{font-size:20px;font-weight:600;display:flex;align-items:center;gap:8px;letter-spacing:-.5px}
.workflow-arrow{font-size:24px;color:var(--accent)}
.work{border-top:0}.film button{border:1px solid var(--line)}
.results{border-top:1px solid var(--line)}.metric strong{color:var(--accent)}
.purchase{border:1px solid var(--accent);border-top:5px solid var(--accent);background:var(--tint)}
.pack-label{font-weight:600}.chapter-num{background:var(--tint);border-radius:8px;height:30px;display:grid;place-items:center;padding:0}
.price{font-weight:600}.contact[hidden]{display:none}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--accent:#ff6267;--button:#261012;--tint:#382326}.play{background:#cc151cef;color:#fffafa}}
@media(max-width:1000px){.platform-workflow{gap:15px;padding:24px}.platform-workflow strong{font-size:17px}}
@media(max-width:767px){.hero{padding-top:30px}h1{font-size:45px;letter-spacing:-1.8px}.hero-eyebrow{font-size:10px;letter-spacing:.6px}.hero-media:before{inset:25px 0 0 0}.platform-workflow{grid-template-columns:1fr;gap:18px;padding:24px;margin-top:0}.platform-workflow a{display:flex;align-items:center;justify-content:space-between;gap:18px}.platform-workflow strong{font-size:16px;text-align:end}.workflow-arrow{display:none}.platform-workflow a>span{max-width:100px;font-size:11px}.platform-workflow a:not(:last-child){padding-bottom:18px;border-bottom:1px solid var(--line)}.hero-poster.back{left:10px}.hero-poster.front{right:8px}}
@media(max-width:380px){h1{font-size:39px}.platform-workflow{padding:18px}.platform-workflow strong{font-size:14px}}
.access-link{border:1px solid var(--line);border-radius:999px;padding:10px 14px;color:var(--muted);font-size:13px;white-space:nowrap;transition:color .2s,border-color .2s,transform .2s}.access-link:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
@media(max-width:767px){.access-link{font-size:11px;padding:8px 10px;margin-left:auto}header{gap:8px}}