:root{--color-primary:#7a16f4;--color-primary-dark:#3c086d;--color-secondary:#00f09a;--color-accent:#ff2bbd;--color-text:#17131f;--color-muted:#665b74;--color-background:#fbf8ff;--color-surface:#fff;--color-line:#e1d2f4;--color-soft:#f2e8ff;--color-success-soft:#e2fff1;--radius-card:28px;--radius-control:999px;--shadow-card:0 18px 50px #30124c24;--shadow-soft:0 10px 24px #30124c1a;--max-width:1160px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--color-text);background:radial-gradient(circle at top left, #00f09a24, transparent 26rem), radial-gradient(circle at top right, #ff2bbd1f, transparent 26rem), var(--color-background);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}a{color:inherit}:focus-visible{outline-offset:4px;outline:3px solid #00f09ab3}.container{width:min(var(--max-width), calc(100% - 40px));margin-inline:auto}.site-header{z-index:50;min-height:76px;padding:14px max(20px, calc((100vw - var(--max-width)) / 2));-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fbf8ffd1;border-bottom:1px solid #e1d2f4b3;justify-content:space-between;align-items:center;gap:24px;display:flex;position:sticky;top:0}.brand,.admin-brand{color:var(--color-primary-dark);align-items:center;gap:10px;font-size:1.1rem;font-weight:950;text-decoration:none;display:inline-flex}.desktop-nav{color:var(--color-muted);align-items:center;gap:26px;font-weight:760;display:flex}.desktop-nav a,.site-footer a{text-decoration:none}.desktop-nav a:hover,.site-footer a:hover{color:var(--color-primary)}.header-actions,.hero__actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.button{border-radius:var(--radius-control);cursor:pointer;border:0;justify-content:center;align-items:center;gap:10px;min-height:48px;padding:0 22px;font-weight:900;text-decoration:none;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex}.button:hover:not(:disabled):not(.is-disabled){box-shadow:var(--shadow-soft);transform:translateY(-2px)}.button--primary{color:#fff;background:linear-gradient(135deg, var(--color-primary), #9a00ff)}.button--secondary{color:var(--color-primary-dark);border:1px solid var(--color-line);background:#fff}.button.is-disabled,.button:disabled{cursor:not-allowed;opacity:.72}.menu-button{border:1px solid var(--color-line);width:46px;height:46px;color:var(--color-primary-dark);background:#fff;border-radius:999px;justify-content:center;align-items:center;display:none}.mobile-menu{background:#13002457;justify-content:flex-end;display:flex;position:fixed;inset:0}.mobile-menu__panel{background:var(--color-surface);width:min(340px,88vw);height:100%;box-shadow:var(--shadow-card);flex-direction:column;gap:18px;padding:24px;display:flex}.mobile-menu__panel a{color:var(--color-text);font-size:1.1rem;font-weight:850;text-decoration:none}.hero{padding:76px 0 56px}.hero__grid{grid-template-columns:minmax(0,1fr) 420px;align-items:center;gap:56px;display:grid}.eyebrow{color:var(--color-primary);letter-spacing:0;align-items:center;gap:8px;margin:0 0 12px;font-weight:950;display:inline-flex}.hero h1{max-width:790px;margin:0;font-size:clamp(3.2rem,8vw,6.9rem);line-height:.92}.hero__subtitle{max-width:670px;color:var(--color-muted);margin:28px 0 12px;font-size:clamp(1.2rem,2vw,1.45rem);line-height:1.55}.hero__slogan{color:var(--color-primary-dark);margin:0 0 28px;font-size:1.08rem;font-weight:900}.hero__note{max-width:580px;color:var(--color-muted);align-items:center;gap:10px;margin-top:22px;font-weight:700;display:flex}.phone-shell{background:linear-gradient(135deg,#21003c,#8f00ff 55%,#ff2bbd);border-radius:42px;width:min(100%,390px);margin-inline:auto;padding:14px;position:relative;box-shadow:0 30px 80px #4500783d}.phone-shell:before{content:"";z-index:-1;filter:blur(28px);background:linear-gradient(135deg,#00e7ff47,#ff2bbd42);border-radius:52px;position:absolute;inset:-26px}.phone-screen{background:#fcf8ff;border-radius:32px;min-height:690px;padding:22px;overflow:hidden}.phone-top,.phone-controls{color:var(--color-primary);justify-content:space-between;align-items:center;font-weight:950;display:flex}.app-hero-card,.download-card{color:#fff;background:linear-gradient(135deg, var(--color-primary), #9a00ff)}.app-hero-card{border-radius:24px;align-items:center;gap:18px;margin:22px 0;padding:22px;display:flex}.app-hero-card h3,.app-hero-card p{margin:0}.app-hero-card p{opacity:.86;line-height:1.45}.mini-label{color:var(--color-primary-dark);background:var(--color-secondary);border-radius:999px;margin-bottom:8px;padding:7px 10px;font-size:.78rem;font-weight:950;display:inline-flex}.teacher-avatar{width:64px;height:64px;color:var(--color-primary-dark);background:#fff;border-radius:50%;flex:0 0 64px;place-items:center;font-size:1.8rem;font-weight:950;display:grid}.chat-card,.feedback-card,.feature-card,.trust-card,.timeline-step,.conversation-sample,.screenshot-card,.faq-item,.legal-page,.not-found,.login-form,.admin-card{background:var(--color-surface);border:1px solid var(--color-line);box-shadow:var(--shadow-soft)}.chat-card{border-radius:22px;margin-top:16px;padding:18px}.chat-card p{margin:8px 0 0;line-height:1.45}.chat-card--user{color:#fff;background:var(--color-primary);margin-left:42px}.chip-row{gap:8px;margin-top:12px;display:flex}.chip-row span,.trust-list li{color:#007746;background:var(--color-success-soft);border-radius:999px;padding:7px 10px;font-size:.86rem;font-weight:850}.feedback-card{color:var(--color-primary-dark);border-radius:18px;align-items:center;gap:10px;margin-top:18px;padding:14px;font-weight:850;display:flex}.phone-controls{margin-top:22px}.phone-controls button{width:48px;height:48px;color:var(--color-primary-dark);background:var(--color-soft);border:0;border-radius:50%}.section,.trust-section,.download-section{padding:72px 0}.section--soft{background:#ffffff7a}.section-title{max-width:720px;margin-bottom:34px}.section-title--center{text-align:center;margin-inline:auto}.section-title h2,.trust-card h2,.download-card h2{margin:0;font-size:clamp(2rem,4vw,3.3rem);line-height:1.03}.section-title p,.trust-card p,.download-card p{color:var(--color-muted);font-size:1.08rem;line-height:1.65}.trust-card{border-radius:var(--radius-card);grid-template-columns:minmax(0,1fr) 420px;gap:28px;padding:36px;display:grid}.trust-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none;display:grid}.trust-list li{align-items:center;gap:8px;padding:12px;display:flex}.ecosystem-section{padding-top:34px}.ecosystem-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.ecosystem-card{border-radius:var(--radius-card);background:linear-gradient(#fffffff5,#ffffffc7),radial-gradient(circle at 18% 12%,#00e6ff29,#0000 34%),radial-gradient(circle at 86% 0,#ff2dc724,#0000 34%);border:1px solid #7b17ee2e;flex-direction:column;min-height:430px;padding:28px;display:flex;box-shadow:0 18px 48px #1f0f471a}.ecosystem-card__icon{color:#061528;background:linear-gradient(135deg, var(--color-accent), #5effa2);border-radius:20px;place-items:center;width:62px;height:62px;display:grid}.ecosystem-card:nth-child(2) .ecosystem-card__icon{color:#fff;background:linear-gradient(135deg, var(--color-primary), #9a00ff)}.ecosystem-card:nth-child(3) .ecosystem-card__icon{color:#fff;background:linear-gradient(135deg,#0a88ff,#ff2dc7)}.ecosystem-card h3{margin:24px 0 10px;font-size:1.55rem;line-height:1.08}.ecosystem-card p{color:var(--color-muted);margin:0;line-height:1.62}.ecosystem-card__chips{flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:24px;display:flex}.ecosystem-card__chips span{min-height:34px;color:var(--color-primary-dark);background:#7b17ee1a;border-radius:999px;align-items:center;padding:7px 12px;font-size:.88rem;font-weight:850;display:inline-flex}.feature-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.feature-card{border-radius:24px;min-height:240px;padding:22px;transition:transform .16s,box-shadow .16s}.feature-card:hover{box-shadow:var(--shadow-card);transform:translateY(-4px)}.feature-card__icon,.download-card__icon,.screenshot-card__screen svg{color:#fff;background:linear-gradient(135deg, var(--color-primary), #9a00ff)}.feature-card__icon,.download-card__icon{border-radius:16px;place-items:center;width:54px;height:54px;display:grid}.feature-card h3,.timeline-step h3,.screenshot-card h3,.conversation-sample h3,.faq-item h3{margin:18px 0 8px;font-size:1.2rem}.feature-card p,.timeline-step p,.screenshot-card p{color:var(--color-muted);margin:0;line-height:1.55}.timeline{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.timeline-step{border-radius:24px;padding:24px;position:relative}.timeline-step__number{color:#fff;background:var(--color-primary);border-radius:50%;place-items:center;width:42px;height:42px;font-weight:950;display:grid}.use-case-layout{grid-template-columns:330px minmax(0,1fr);gap:24px;display:grid}.tabs{gap:10px;display:grid}.tabs button{border:1px solid var(--color-line);text-align:left;color:var(--color-text);cursor:pointer;background:#fff;border-radius:18px;padding:16px}.tabs button.is-active{color:#fff;background:var(--color-primary);border-color:var(--color-primary)}.tabs span{font-weight:950;display:block}.tabs small{color:inherit;opacity:.74;margin-top:5px;font-weight:850;display:block}.conversation-sample{border-radius:var(--radius-card);padding:28px}.conversation-sample__messages{gap:14px;margin-top:20px;display:grid}.bubble{background:var(--color-soft);border-radius:22px;max-width:78%;padding:16px}.bubble--user{color:#fff;background:var(--color-primary);justify-self:end}.bubble p{margin:6px 0 0;line-height:1.5}.screenshot-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.screenshot-card{border-radius:var(--radius-card);padding:16px}.screenshot-card__screen{aspect-ratio:9/15;background:linear-gradient(#7a16f41f,#00f09a1a),#fff;border-radius:24px;align-content:center;place-items:center;gap:14px;display:grid}.screenshot-card__screen svg{border-radius:22px;width:72px;height:72px;padding:18px}.download-card{box-shadow:var(--shadow-card);border-radius:34px;padding:44px}.download-card p{color:#ffffffdb;max-width:720px}.faq-list{gap:12px;max-width:860px;margin-inline:auto;display:grid}.faq-item{border-radius:20px;overflow:hidden}.faq-item h3{margin:0}.faq-item button{text-align:left;width:100%;color:var(--color-text);cursor:pointer;background:0 0;border:0;justify-content:space-between;align-items:center;padding:18px 20px;font-weight:950;display:flex}.faq-item svg{transition:transform .16s}.faq-item svg.is-open{transform:rotate(180deg)}.faq-item p{color:var(--color-muted);margin:0;padding:0 20px 20px;line-height:1.6}.site-footer{color:#fff;background:#130024;padding:52px 0 28px}.site-footer__grid{justify-content:space-between;align-items:flex-start;gap:30px;display:flex}.site-footer .brand{color:#fff}.site-footer p{color:#ffffffc2;max-width:420px;line-height:1.55}.site-footer nav{color:#ffffffc7;flex-wrap:wrap;gap:18px;font-weight:800;display:flex}.footer-admin{opacity:.68}.copyright{margin-top:32px;font-size:.92rem}.legal-page,.not-found{border-radius:var(--radius-card);width:min(860px,100% - 40px);margin:70px auto;padding:38px}.legal-page h1,.not-found h1{margin-top:0;font-size:clamp(2.2rem,5vw,4rem)}.legal-page p{color:var(--color-muted);line-height:1.7}.login-page{background:radial-gradient(circle at 0 0,#00f09a29,#0000 24rem),linear-gradient(135deg,#130024,#39006b);place-items:center;min-height:100vh;padding:24px;display:grid}.back-link{color:#fff;font-weight:850;position:fixed;top:24px;left:24px}.login-form{border-radius:30px;width:min(100%,460px);padding:34px}.login-form__icon{color:#fff;background:var(--color-primary);border-radius:18px;place-items:center;width:56px;height:56px;display:grid}.login-form h1{margin-bottom:8px}.login-form p,.form-message{color:var(--color-muted)}.login-form label{margin:16px 0 7px;font-weight:850;display:block}.login-form input{border:1px solid var(--color-line);width:100%;height:50px;color:var(--color-text);background:#fff;border-radius:16px;padding:0 14px}.password-field{border:1px solid var(--color-line);background:#fff;border-radius:16px;align-items:center;display:flex}.password-field input{border:0}.password-field button{width:48px;color:var(--color-muted);background:0 0;border:0}.checkbox-label{align-items:center;gap:10px;display:flex!important}.checkbox-label input{width:18px;height:18px}.form-message{min-height:24px;margin:10px 0}.admin-shell{background:#f7f3fb;grid-template-columns:260px minmax(0,1fr);min-height:100vh;display:grid}.admin-sidebar{color:#fff;background:#130024;padding:26px}.admin-sidebar nav{gap:12px;margin:34px 0;display:grid}.admin-sidebar a,.admin-sidebar button{color:#ffffffd1;font-weight:850;text-decoration:none}.admin-sidebar button{cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;padding:0;display:inline-flex}.admin-main{padding:40px}.admin-heading p{color:var(--color-primary);font-weight:950}.admin-heading h1{margin:0 0 22px;font-size:3rem}.admin-status{border:1px solid var(--color-line);background:#fff;border-radius:20px;justify-content:space-between;gap:16px;margin-bottom:24px;padding:18px;display:flex}.admin-status span{color:var(--color-muted);font-weight:800}.admin-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.admin-card{border-radius:24px;padding:24px}.admin-card svg{color:var(--color-primary)}.admin-card p,.screen-message p{color:var(--color-muted)}.screen-message{place-items:center;min-height:100vh;padding:24px;font-weight:850;display:grid}.screen-message--wide{text-align:center;align-content:center;gap:10px}@media (width<=1024px){.hero__grid,.trust-card,.use-case-layout,.ecosystem-grid{grid-template-columns:1fr}.feature-grid,.timeline,.admin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=768px){.desktop-nav{display:none}.menu-button{display:inline-flex}.site-header{min-height:68px}.hero{padding-top:42px}.hero__grid{gap:36px}.phone-screen{min-height:600px}.feature-grid,.ecosystem-grid,.timeline,.screenshot-grid,.trust-list,.admin-grid{grid-template-columns:1fr}.site-footer__grid,.admin-status{flex-direction:column}.admin-shell{grid-template-columns:1fr}.admin-sidebar{position:static}}@media (width<=420px){.container{width:min(100% - 28px, var(--max-width))}.site-header{padding-inline:14px}.header-actions .button{display:none}.hero h1{font-size:3.4rem}.hero__actions .button{width:100%}.phone-shell{border-radius:34px;padding:10px}.download-card,.trust-card,.legal-page,.not-found{padding:26px}.bubble{max-width:92%}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}