:root{color-scheme:dark;--bg:#07101f;--panel:rgba(14,27,48,.78);--line:rgba(148,163,184,.16);--text:#eef5ff;--muted:#9fb0c8;--blue:#4ca8ff;--cyan:#58e8ff;--green:#78e6b0;--amber:#ffcf70}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 15% -10%,rgba(53,151,255,.22),transparent 35%),radial-gradient(circle at 85% 5%,rgba(124,75,255,.19),transparent 34%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
a{color:inherit}.shell{width:min(1120px,calc(100% - 36px));margin:0 auto}.hero{min-height:620px;border-bottom:1px solid var(--line)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:760;letter-spacing:-.02em}.brand img{border-radius:10px;box-shadow:0 10px 34px rgba(53,136,255,.22)}.nav-links{display:flex;gap:24px;color:var(--muted);font-size:14px}.nav-links a{text-decoration:none}.nav-links a:hover{color:var(--text)}
.hero-body{padding:118px 0 110px;max-width:900px}.eyebrow,.kicker{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.16em}h1{margin:18px 0 22px;max-width:850px;font-size:clamp(42px,7vw,78px);line-height:1.06;letter-spacing:-.045em}.hero-copy{max-width:780px;margin:0;color:var(--muted);font-size:clamp(17px,2vw,21px)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:12px;text-decoration:none;font-weight:720}.primary{background:linear-gradient(135deg,#398cff,#7557ff);box-shadow:0 12px 36px rgba(69,113,255,.28)}.ghost{border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--muted)}
.section{padding:88px 0}.section-alt{padding:88px 0;background:rgba(5,13,27,.55);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-heading{max-width:740px;margin-bottom:34px}h2{margin:8px 0 10px;font-size:clamp(30px,4vw,45px);line-height:1.15;letter-spacing:-.035em}.section-heading p,.split p{color:var(--muted)}.steps,.rule-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.step,.rule,.code-card{border:1px solid var(--line);background:linear-gradient(180deg,rgba(18,35,62,.84),rgba(10,22,40,.82));border-radius:18px}.step,.rule{padding:24px}.step-no{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em}h3{margin:12px 0 8px;font-size:18px}.step p,.rule p{margin:0;color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}.code-card{padding:20px;overflow:hidden}.code-title{margin-bottom:12px;color:var(--muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.1em}pre{margin:0;padding:18px;overflow-x:auto;border-radius:12px;background:#050b16;color:#c8e8ff;white-space:pre-wrap;word-break:break-word;font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.notice{margin:14px 2px 0!important;color:var(--amber)!important;font-size:13px}.good{border-color:rgba(79,218,158,.22)}.warn{border-color:rgba(255,196,92,.24)}
.ai-tabs{border:1px solid var(--line);border-radius:20px;background:rgba(8,19,35,.72);overflow:hidden}.tab-input{position:absolute;opacity:0;pointer-events:none}.tab-list{display:flex;flex-wrap:wrap;gap:8px;padding:10px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.025)}.tab-list label{flex:1;white-space:nowrap;cursor:pointer;padding:11px 16px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:750;text-align:center;transition:.18s ease}.tab-list label:hover{color:var(--text);background:rgba(255,255,255,.045)}.tab-panel{display:none;padding:28px}.platform-head{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:22px}.platform-head h3{margin:7px 0 0;font-size:24px}.platform-badge{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.platform-link{flex:none;border:1px solid rgba(76,168,255,.32);border-radius:10px;padding:8px 12px;color:#8bc8ff;text-decoration:none;font-size:13px;font-weight:700}.platform-link:hover{border-color:rgba(76,168,255,.65);background:rgba(76,168,255,.08)}.guide-list{display:grid;gap:12px;margin:0;padding:0;counter-reset:webstep;list-style:none}.guide-list li{position:relative;padding:18px 18px 18px 58px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.025);counter-increment:webstep}.guide-list li:before{content:counter(webstep);position:absolute;left:18px;top:17px;width:25px;height:25px;display:grid;place-items:center;border-radius:8px;background:rgba(76,168,255,.12);color:#8bc8ff;font-size:12px;font-weight:800}.guide-list strong{display:block;margin-bottom:4px}.guide-list p{margin:0;color:var(--muted);font-size:14px}.guide-list a{color:#8bc8ff}.guide-list code{display:inline-block;padding:1px 6px;border:1px solid var(--line);border-radius:6px;background:#050b16;color:#c8e8ff;font-size:12px}.tab-note{margin:16px 0 0;padding:12px 14px;border-left:3px solid var(--amber);border-radius:0 9px 9px 0;background:rgba(255,207,112,.06);color:var(--amber);font-size:13px}#tab-chatgpt:checked~.tab-list label[for=tab-chatgpt],#tab-arena:checked~.tab-list label[for=tab-arena],#tab-devin:checked~.tab-list label[for=tab-devin],#tab-workbuddy:checked~.tab-list label[for=tab-workbuddy],#tab-trae:checked~.tab-list label[for=tab-trae],#tab-qwen:checked~.tab-list label[for=tab-qwen],#tab-manus:checked~.tab-list label[for=tab-manus],#tab-browseruse:checked~.tab-list label[for=tab-browseruse],#tab-zai:checked~.tab-list label[for=tab-zai],#tab-agnes:checked~.tab-list label[for=tab-agnes],#tab-other:checked~.tab-list label[for=tab-other]{background:linear-gradient(135deg,rgba(57,140,255,.22),rgba(117,87,255,.18));color:var(--text);box-shadow:inset 0 0 0 1px rgba(100,163,255,.18)}#tab-chatgpt:checked~.tab-panels .panel-chatgpt,#tab-arena:checked~.tab-panels .panel-arena,#tab-devin:checked~.tab-panels .panel-devin,#tab-workbuddy:checked~.tab-panels .panel-workbuddy,#tab-trae:checked~.tab-panels .panel-trae,#tab-qwen:checked~.tab-panels .panel-qwen,#tab-manus:checked~.tab-panels .panel-manus,#tab-browseruse:checked~.tab-panels .panel-browseruse,#tab-zai:checked~.tab-panels .panel-zai,#tab-agnes:checked~.tab-panels .panel-agnes,#tab-other:checked~.tab-panels .panel-other{display:block}
.community-section{padding-top:18px}.community-card{display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center;padding:34px;border:1px solid rgba(88,232,255,.2);border-radius:20px;background:linear-gradient(135deg,rgba(28,87,145,.2),rgba(91,50,169,.2))}.community-card h2{margin-bottom:8px}.community-card p{max-width:670px;margin:0;color:var(--muted)}.qq-box{min-width:230px;padding:20px 24px;border:1px solid rgba(255,255,255,.12);border-radius:16px;background:rgba(5,11,22,.5);text-align:center}.qq-box span,.qq-box small{display:block;color:var(--muted);font-size:12px}.qq-box strong{display:block;margin:5px 0;font-size:27px;letter-spacing:.035em;color:#a9eaff}
.faq{display:grid;gap:10px}details{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:0 18px}summary{cursor:pointer;padding:18px 0;font-weight:700}details p{margin:-4px 0 18px;color:var(--muted)}footer{border-top:1px solid var(--line);color:var(--muted)}.footer-inner{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px}.footer-brand{color:var(--text)}
@media(max-width:820px){.steps,.rule-grid{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr;gap:26px}.community-card{grid-template-columns:1fr}.qq-box{width:100%}}@media(max-width:580px){.nav-links{display:none}.hero{min-height:auto}.hero-body{padding:78px 0 80px}.section,.section-alt{padding:64px 0}.steps,.rule-grid{grid-template-columns:1fr}.tab-list{overflow-x:auto}.tab-list label{min-width:120px}.tab-panel{padding:18px}.platform-head{flex-direction:column}.guide-list li{padding-left:52px}.community-section{padding-top:10px}.community-card{padding:24px}.footer-inner{align-items:flex-start;flex-direction:column;justify-content:center;padding:28px 0}}
/* Marketing hero + SEO value section */
.hero-body{padding:102px 0 104px;max-width:970px}.hero-body h1{max-width:950px;line-height:1.04}.hero-copy{max-width:860px}.hero-points{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}.hero-points span{padding:7px 11px;border:1px solid rgba(88,232,255,.16);border-radius:999px;background:rgba(88,232,255,.055);color:#c9f6ff;font-size:12.5px;font-weight:700}.hero-actions{margin-top:30px}.hero-footnote{margin:14px 0 0;color:#72839c;font-size:11.5px}.value-section{padding:72px 0;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(10,21,39,.72),rgba(7,16,31,.2))}.value-heading{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.4fr);gap:36px;align-items:end;margin-bottom:28px}.value-heading .kicker{grid-column:1/-1}.value-heading h2{margin:0}.value-heading p{margin:0;color:var(--muted)}.value-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.value-card{padding:24px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,rgba(18,35,62,.72),rgba(9,19,35,.72))}.value-number{display:block;margin-bottom:10px;color:#a9eaff;font-size:22px;letter-spacing:-.02em}.value-number span{font-size:12px;color:var(--muted);font-weight:700}.value-card h3{margin:0 0 7px}.value-card p{margin:0;color:var(--muted);font-size:14px}@media(max-width:820px){.value-grid{grid-template-columns:1fr 1fr}.value-card:last-child{grid-column:1/-1}.value-heading{grid-template-columns:1fr;gap:12px}}@media(max-width:580px){.hero-body{padding:72px 0}.value-section{padding:56px 0}.value-grid{grid-template-columns:1fr}.value-card:last-child{grid-column:auto}}
/* Refined product-site theme: quieter, tighter and higher-contrast. */
:root{--bg:#0a0b0f;--panel:rgba(18,20,27,.82);--line:rgba(255,255,255,.085);--text:#f4f4f5;--muted:#a1a1aa;--blue:#8ab4ff;--cyan:#9bdcff;--green:#88d8b0;--amber:#e7c77a}
body{font-size:15px;line-height:1.62;background:radial-gradient(circle at 18% -12%,rgba(78,113,184,.16),transparent 32%),radial-gradient(circle at 82% 0%,rgba(112,82,170,.11),transparent 28%),var(--bg)}
.shell{width:min(1080px,calc(100% - 36px))}.hero{min-height:560px}.nav{height:68px}.brand{font-size:15px}.brand img{width:34px;height:34px;border-radius:9px;box-shadow:0 8px 26px rgba(61,96,156,.18)}.nav-links{gap:19px;font-size:13px;align-items:center}.nav-order{padding:8px 13px;border:1px solid rgba(255,255,255,.15);border-radius:9px;background:#f4f4f5;color:#111318!important;font-weight:750;transition:.18s ease}.nav-order:hover{background:#fff;text-decoration:none!important;transform:translateY(-1px)}
.hero-body{padding:82px 0 86px;max-width:880px}.hero-body h1{max-width:820px;margin:15px 0 18px;font-size:clamp(36px,5.4vw,60px);line-height:1.08;letter-spacing:-.038em}.eyebrow,.kicker{font-size:11px;letter-spacing:.14em;color:#8fc9ff}.hero-copy{max-width:790px;font-size:clamp(16px,1.65vw,18px);line-height:1.7}.hero-points{gap:7px;margin-top:21px}.hero-points span{padding:6px 10px;border-color:rgba(138,180,255,.14);background:rgba(138,180,255,.055);color:#d6e5ff;font-size:12px}.hero-actions{gap:9px;margin-top:25px}.button{min-height:42px;padding:0 17px;border-radius:10px;font-size:13px}.primary{background:#f4f4f5;color:#111318;box-shadow:none}.primary:hover{background:#fff;transform:translateY(-1px)}.order-button{font-weight:800}.ghost{background:rgba(255,255,255,.025);border-color:rgba(255,255,255,.1);color:#c4c6ce}.ghost:hover{border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.05)}.hero-footnote{margin-top:11px;color:#71717a;font-size:11px}
.value-section{padding:58px 0;background:rgba(255,255,255,.012)}.value-heading{gap:28px;margin-bottom:23px}.value-heading h2,h2{font-size:clamp(27px,3.3vw,38px);letter-spacing:-.028em}.value-heading p,.section-heading p,.split p{font-size:14px}.value-grid{gap:11px}.value-card,.step,.rule,.code-card{border-color:var(--line);background:linear-gradient(180deg,rgba(20,22,29,.86),rgba(14,16,22,.86));border-radius:14px}.value-card,.step,.rule{padding:20px}.value-number{font-size:19px;color:#b9d4ff}.value-card h3,h3{font-size:16.5px}.value-card p,.step p,.rule p{font-size:13.5px}.section,.section-alt{padding:70px 0}.section-alt{background:rgba(255,255,255,.012)}.section-heading{margin-bottom:28px}.steps,.rule-grid{gap:11px}.split{gap:36px}.code-card{padding:17px}pre{font-size:12px;background:#08090d}.ai-tabs{border-radius:15px;background:rgba(15,17,23,.84)}.tab-panel{padding:22px}.platform-head h3{font-size:20px}.guide-list{gap:9px}.guide-list li{padding:15px 16px 15px 54px;border-radius:11px;background:rgba(255,255,255,.018)}.guide-list p{font-size:13.5px}.community-card{padding:28px;border-color:rgba(138,180,255,.16);background:linear-gradient(135deg,rgba(48,65,103,.14),rgba(68,48,100,.11))}.qq-box{background:rgba(10,11,15,.55);border-color:var(--line)}details{border-radius:11px;background:rgba(17,19,25,.72)}summary{padding:15px 0;font-size:14px}details p{font-size:13.5px}
@media(max-width:820px){.nav-links a:not(.nav-order){display:none}.hero{min-height:auto}.hero-body{padding:66px 0 70px}.section,.section-alt{padding:58px 0}}
@media(max-width:580px){.shell{width:min(100% - 26px,1080px)}.nav{height:62px}.hero-body h1{font-size:36px}.hero-copy{font-size:15.5px}.hero-actions .button{width:100%}.value-section{padding:50px 0}.section,.section-alt{padding:52px 0}.community-card{padding:20px}}
.video-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:linear-gradient(180deg,rgba(20,22,29,.86),rgba(14,16,22,.86))}.video-link{display:block;text-decoration:none}.video-cover{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:radial-gradient(circle at center,rgba(138,180,255,.2),transparent 35%),#11141c;color:#f4f4f5;font-weight:700;font-size:18px}.play-button{width:72px;height:72px;display:grid;place-items:center;border-radius:50%;background:#f4f4f5;color:#111318;font-size:26px;padding-left:5px}.video-meta{padding:22px}.video-meta strong{font-size:18px}.video-meta p{margin:8px 0 0;color:var(--muted);font-size:14px}
.floating-tools{position:fixed;right:18px;bottom:24px;z-index:30;display:grid;gap:8px;justify-items:end}.floating-community,.back-to-top{border:1px solid rgba(255,255,255,.1);background:rgba(15,17,23,.92);color:var(--text);box-shadow:0 12px 34px rgba(0,0,0,.28);backdrop-filter:blur(14px)}.floating-community{display:flex;align-items:center;gap:9px;min-width:148px;padding:10px 12px;border-radius:12px;text-decoration:none;transition:.18s ease}.floating-community:hover{border-color:rgba(138,180,255,.25);background:rgba(22,25,34,.96);transform:translateY(-1px)}.floating-icon{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;background:rgba(138,180,255,.1);color:#cfe0ff;font-size:13px;font-weight:800}.floating-copy{display:grid;line-height:1.15}.floating-copy strong{font-size:12.5px}.floating-copy small{margin-top:4px;color:var(--muted);font-size:10.5px;letter-spacing:.025em}.back-to-top{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease,background .18s ease}.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{background:rgba(27,30,40,.98)}.back-to-top span{font-size:18px;line-height:1}.back-to-top small{margin-top:-10px;color:var(--muted);font-size:8px}@media(max-width:720px){.floating-tools{right:10px;bottom:12px;gap:6px}.floating-community{min-width:auto;width:46px;height:46px;padding:0;justify-content:center}.floating-copy{position:absolute;right:54px;bottom:54px;min-width:112px;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:rgba(15,17,23,.96);opacity:0;visibility:hidden;transform:translateX(4px);transition:.16s ease}.floating-community:hover .floating-copy,.floating-community:focus .floating-copy{opacity:1;visibility:visible;transform:translateX(0)}.floating-icon{background:transparent}.back-to-top{width:46px;height:46px}}
.video-carousel{position:relative}.video-viewport{overflow:hidden;border-radius:18px}.video-track{display:flex;align-items:stretch;transition:transform .45s ease}.video-slide{flex:0 0 100%;min-width:100%}.video-cover.has-thumb{position:relative;display:block;min-height:0;padding:0;aspect-ratio:16/9;background:#0b0e15}.video-cover.has-thumb img{display:block;width:100%;height:100%;object-fit:cover}.video-cover.has-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(5,8,14,.42));pointer-events:none}.video-cover.has-thumb .play-button{position:absolute;left:50%;top:50%;z-index:1;transform:translate(-50%,-50%);background:rgba(244,244,245,.94);box-shadow:0 12px 36px rgba(0,0,0,.4);transition:transform .18s ease}.video-link:hover .video-cover.has-thumb .play-button{transform:translate(-50%,-50%) scale(1.08)}
.carousel-arrow{position:absolute;top:50%;z-index:2;width:44px;height:44px;display:grid;place-items:center;padding:0 0 3px;border:1px solid rgba(255,255,255,.14);border-radius:50%;background:rgba(10,14,22,.74);color:#eef5ff;font-size:26px;line-height:1;cursor:pointer;transform:translateY(-50%);backdrop-filter:blur(8px);transition:.18s ease}.carousel-arrow:hover{background:rgba(27,32,44,.92);border-color:rgba(138,180,255,.42)}.carousel-prev{left:14px}.carousel-next{right:14px}.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:16px}.carousel-dot{width:9px;height:9px;padding:0;border:0;border-radius:999px;background:rgba(148,163,184,.35);cursor:pointer;transition:.2s ease}.carousel-dot.is-active{width:26px;background:var(--blue)}.carousel-dot:hover{background:rgba(148,163,184,.6)}.carousel-dot.is-active:hover{background:var(--blue)}@media(max-width:580px){.carousel-arrow{width:36px;height:36px;font-size:21px}.carousel-prev{left:8px}.carousel-next{right:8px}}