:root{--ink:#303442;--muted:#7d8190;--accent:#7063ad;--line:#eceef2}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:#fff;color:var(--ink);font:16px/1.9 'Segoe UI',Tahoma,Arial,sans-serif}a{color:inherit;text-decoration:none}a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}header,main,footer{width:min(1140px,calc(100% - 64px));margin:auto}header{display:flex;align-items:center;justify-content:space-between;padding:25px 0;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:24px;font-weight:750;direction:ltr;color:var(--accent);letter-spacing:-.7px}nav{display:flex;align-items:center;gap:28px;font-size:14px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;background:var(--accent);color:white;padding:11px 22px;border-radius:8px;font-size:14px;font-weight:600}.button:hover{background:#60539a}.button.small{padding:7px 16px}.hero{padding:92px 0;display:grid;grid-template-columns:1.15fr 1fr;gap:76px;align-items:center}.eyebrow{font-size:13px;color:var(--accent);display:inline-flex;align-items:center;gap:8px}.eyebrow i{width:6px;height:6px;background:#89a792;border-radius:50%}h1{font-size:clamp(32px,3.6vw,47px);line-height:1.5;letter-spacing:-1.1px;margin:20px 0}h1 span{color:var(--accent)}.hero_text>p{font-size:17px;line-height:2;color:var(--muted);max-width:530px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin:28px 0 15px}.secondary{font-size:13px;color:var(--accent)}.hero_text>small{display:block;color:var(--muted);font-size:11px;max-width:440px}.preview{background:#fff;border:1px solid #e7e4ee;border-radius:14px;box-shadow:0 15px 55px #41364f09;overflow:hidden}.preview_head{padding:16px 20px;display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line);font-size:14px}.chat_symbol{width:32px;height:32px;background:#f1eff8;color:var(--accent);display:grid;place-items:center;border-radius:8px;font-size:24px}.demo_label{margin-right:auto;font-size:10px;color:var(--muted)}.conversation{padding:28px 20px;background:#fcfcfd;min-height:260px}.message{display:flex;align-items:start;gap:10px;margin-bottom:25px}.avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eeeaf6;color:var(--accent);flex:none;font-size:13px}.avatar.green{background:#edf3ef;color:#6c8c7a}.message b{font-size:12px;font-weight:600}.message small{font-size:9px;font-weight:400;color:#a2a4af;margin-right:9px}.message p{margin:6px 0 0;font-size:13px;line-height:1.8;background:white;border:1px solid var(--line);padding:8px 11px;border-radius:8px}.room_hint{font-size:10px;text-align:center;color:#a1a3ae;margin:32px 0 0}.preview_input{display:flex;justify-content:space-between;background:#f7f7fa;border:1px solid var(--line);border-radius:7px;margin:12px;padding:8px 12px;font-size:11px;color:var(--muted)}.features{padding:35px 0 70px;border-top:1px solid var(--line)}h2{font-size:27px;margin:10px 0}p{margin:10px 0}.section_intro>p,.try p{color:var(--muted);font-size:14px}.feature_grid{display:grid;grid-template-columns:repeat(3,1fr);gap:44px;margin-top:40px}.number{font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums}h3{font-size:17px;margin:12px 0}.feature_grid p{font-size:14px;color:var(--muted);line-height:2}.try{border-top:1px solid var(--line);padding:40px 0 60px;display:flex;justify-content:space-between;align-items:center;gap:25px}.try h2{font-size:24px}footer{border-top:1px solid var(--line);padding:24px 0;display:flex;align-items:center;gap:22px;font-size:12px;color:var(--muted)}footer>span:last-child{margin-right:auto}@media(max-width:850px){.hero{gap:30px;padding:55px 0}.hero_text>p{font-size:15px}.actions{gap:12px}.feature_grid{gap:22px}}@media(max-width:650px){header,main,footer{width:calc(100% - 32px)}header{padding:18px 0}.brand{font-size:21px}nav{gap:12px}nav>a:not(.button):not(.lang_switch){display:none}.hero{grid-template-columns:1fr;padding:40px 0;gap:30px}h1{font-size:34px;margin:15px 0}.hero_text>p{font-size:15px}.preview{max-width:450px;width:100%;margin:auto}.feature_grid{grid-template-columns:1fr;gap:15px;margin-top:24px}.feature_grid article{border-top:1px solid var(--line);padding-top:15px}.features{padding:28px 0 35px}h2{font-size:23px}.try{align-items:start;flex-direction:column;padding:25px 0 35px}.try h2{font-size:22px}footer{flex-wrap:wrap;gap:10px 18px}footer>span:last-child{margin-right:0;width:100%}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Clearer platform introduction and stronger visual hierarchy. */
:root{--ink:#292c3d;--muted:#606577;--accent:#6251a6;--line:#e5e3ec}
body{background:#fff}header{padding:20px 0}.brand{font-size:26px}nav{font-size:15px}nav>a:hover{color:var(--accent)}nav>.button:hover{color:white}
.hero{padding:64px 0;gap:52px;position:relative}.hero_text>p{color:#555b6d;font-size:18px;line-height:1.95}h1{font-size:clamp(36px,4vw,52px);line-height:1.45;letter-spacing:-1px;margin:16px 0}.eyebrow{font-weight:600;color:#6251a6;background:#f0ecf8;padding:4px 10px;border-radius:5px}
.hero_points{display:flex;flex-wrap:wrap;gap:7px 15px;margin:20px 0;color:#454b5e;font-size:13px}.hero_points span:before{content:'✓';color:#477962;margin-left:6px;font-weight:bold}
.actions{margin:25px 0 14px;gap:12px}.button{font-size:15px;padding:12px 20px;border-radius:7px}.secondary{border:1px solid #d6cfe8;padding:11px 16px;border-radius:7px;font-size:14px;background:#fff}.secondary:hover{background:#f5f2fa}.hero_text>small{font-size:12px;color:#666b7a;max-width:none}
.preview{border:1px solid #d9d1e9;box-shadow:12px 16px 0 #efebf6;border-radius:12px}.preview_head{background:#6251a6;color:white;padding:17px}.demo_label{color:#eee8ff;border:1px solid #b9acd9;padding:1px 7px;border-radius:4px}.chat_symbol{background:#ffffff21;color:#fff}.conversation{background:#f7f6fa;min-height:285px;padding:28px 17px}.message b{font-size:14px}.message p{font-size:15px;padding:10px 12px;color:#424758;border-color:#e4deed}.message small{font-size:10px;color:#74798a}.avatar{width:38px;height:38px;font-size:15px;background:#e5ddf2}.avatar.green{background:#dfede5;color:#48745a}.room_hint{font-size:12px;color:#6b7081}.preview_input{font-size:13px;padding:10px;color:#605676;background:#f2eff8}
.platform_summary{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:#f5f3f9;padding:24px 28px;border:1px solid #e6e0ef;border-radius:9px;margin-bottom:42px}.platform_summary>div+div{border-right:1px solid #ded7e9;padding-right:30px}.platform_summary span{font-size:12px;color:var(--accent)}.platform_summary b{display:block;font-size:19px;margin-top:4px}.platform_summary p{font-size:14px;color:#62677a;margin:4px 0 0}
.features{padding:36px 0 50px;border:0}.section_intro>p{font-size:16px;color:#62677a}.feature_grid{gap:18px;margin-top:28px}.feature_grid article{border:1px solid #e5e1ec;border-radius:9px;padding:22px;background:#fff}.number{width:34px;height:34px;display:grid;place-items:center;background:#eee9f7;color:var(--accent);font-size:14px;font-weight:700;border-radius:7px}.feature_grid h3{font-size:19px}.feature_grid p{font-size:15px;color:#62677a}.try{background:#f5f3f9;padding:28px;border:1px solid #e6e0ef;border-radius:9px;margin:5px 0 50px}.try p{color:#62677a;font-size:15px}
@media(max-width:650px){.hero{padding:32px 0 42px;gap:32px}h1{font-size:36px}.hero_text>p{font-size:16px}.hero_points{gap:6px 12px;font-size:12px}.hero_text>small{font-size:11px}.actions{align-items:stretch}.actions>a{flex:1;min-width:145px;text-align:center;font-size:13px;padding:11px 10px}.preview{width:calc(100% - 10px);margin-right:0;box-shadow:8px 9px 0 #efebf6}.conversation{min-height:245px}.message p{font-size:13px}.platform_summary{grid-template-columns:1fr;padding:20px;gap:18px;margin-bottom:18px}.platform_summary>div+div{border-right:0;border-top:1px solid #ded7e9;padding:16px 0 0}.platform_summary b{font-size:18px}.section_intro>p{font-size:14px}.feature_grid article{padding:18px}.feature_grid h3{font-size:18px}.try{padding:20px;gap:16px;margin-bottom:30px}.try p{font-size:14px}.try .button{width:100%}}

header .lang_switch{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:4px 12px;border:1px solid var(--line);border-radius:8px;white-space:nowrap;color:var(--accent);font-weight:600}
@media(max-width:650px){header{flex-wrap:wrap;gap:10px}header nav{margin-inline-start:auto;flex-wrap:wrap;gap:8px}header .lang_switch{font-size:13px}}