@font-face{font-family:HakgyoansimWooju;src:url(/font/HakgyoansimWooju.woff2) format("woff2"),url(/font/HakgyoansimWooju.woff) format("woff");font-weight:400;font-style:normal;font-display:swap}:root{color-scheme:light;--bg: #f4efe7;--bg-accent: #e4d4bf;--text: #1e1d1a;--muted: #5f5a52;--line: rgba(30, 29, 26, .12);--card: rgba(255, 252, 247, .72);--primary: #bf5a36;--primary-strong: #9f451f}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{font-family:Segoe UI,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(191,90,54,.18),transparent 28%),linear-gradient(135deg,var(--bg),#fbf8f3 55%,var(--bg-accent))}a{color:inherit;text-decoration:none}.hero{width:min(1080px,calc(100% - 48px));margin:0 auto;min-height:100vh;display:grid;align-content:center;gap:1.5rem;padding:72px 0}.hero-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;align-items:center}.hero-text{text-align:left}.logo{display:block;margin-bottom:1rem;width:84px;height:auto}.eyebrow{margin:0;font-size:.95rem;letter-spacing:.14em;text-transform:uppercase;color:#29692a;font-weight:700}h1{margin:.4rem 0 .8rem;font-size:clamp(2.4rem,5vw,4.4rem);line-height:1.05;letter-spacing:-.02em}h1 span,.hero-text strong{display:inline-block}.hero-text strong{font-size:clamp(3rem,7vw,5rem);color:#1b6d19;font-weight:900;margin-left:.35rem}.smile{font-size:1.3rem;margin-left:.45rem}.lead{max-width:42rem;margin:0;font-size:1.15rem;line-height:1.7;color:#3d5036}.actions{display:flex;flex-wrap:wrap;gap:.875rem;padding-top:.8rem}.hero-simulated-chat{background:linear-gradient(145deg,#e4f8e9,#f5fff7);border:1px solid rgba(76,163,89,.25);border-radius:26px;padding:18px;box-shadow:0 20px 40px #194b1b2e}.chat-card{background:#fff;border-radius:18px;padding:1.25rem;display:grid;gap:.7rem}.chat-message{padding:.75rem .85rem;max-width:85%;font-size:.98rem;line-height:1.4;border-radius:12px}.from-system{background:#7acf7b;color:#fff;align-self:start;max-width:75%}.from-school{background:#f6f4d4;color:#293a1e;align-self:start}.button{border:1px solid transparent;border-radius:999px;padding:.85rem 1.3rem;font-weight:700;transition:transform .16s ease,background-color .16s ease,border-color .16s ease}.button.primary{background:#1e7e2a;color:#fff}.button.primary:hover{background:#266f21}.button.secondary{background:#fff;color:#2f5f2f;border-color:#abdcb0}.button.secondary:hover{background:#edf8ef}h1{margin:0;font-size:clamp(2.8rem,8vw,5.8rem);line-height:.95}.lead{max-width:42rem;margin:0;font-size:1.125rem;line-height:1.7;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:.875rem;padding-top:.5rem}.button{border:1px solid var(--line);border-radius:999px;padding:.95rem 1.25rem;font-weight:700;transition:transform .16s ease,background-color .16s ease,border-color .16s ease}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--primary);color:#fff8f2;border-color:transparent}.button.primary:hover{background:var(--primary-strong)}.button.secondary{background:var(--card);backdrop-filter:blur(8px)}.sec1{width:min(1080px,calc(100% - 48px));margin:0 auto;min-height:100vh;padding:60px 0 80px;display:grid;gap:1.4rem}.sec1-badge{display:inline-flex;align-items:center;gap:.65rem;padding:.6rem .9rem;background:#e8f3ea;border:1px solid #a8d5aa;border-radius:999px;color:#2d6f2f;font-weight:700;width:fit-content}.sec1-badge img{width:30px;height:auto}.sec1-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:center;gap:2rem}.sec1-text h1{margin:0;font-size:clamp(3rem,8vw,5.2rem);line-height:1.03}.sec1-text strong{color:#2d6f2f;margin-left:.4rem}.sec1-text .smile{font-size:1.6rem;margin-left:.4rem}.sec1-lead{margin-top:.9rem;color:#3f513a;font-size:1.2rem;line-height:1.65;max-width:42rem}.sec1-actions{margin-top:1.3rem;display:flex;flex-wrap:wrap;gap:.85rem}.sec1-preview .preview-frame{position:relative;width:100%;max-width:420px;margin:0 auto}.sec1-preview .preview-frame .frame{width:100%;display:block}.sec1-preview .preview-frame .frame-character,.sec1-preview .preview-frame .frame-avatar{position:absolute;left:50%;transform:translate(-50%)}.sec1-preview .preview-frame .frame-character{bottom:8%;width:75%}.sec1-preview .preview-frame .frame-avatar{bottom:68%;width:22%}@media(max-width:640px){.sec1{width:min(100% - 32px,960px);padding:48px 0}.sec1-lead{font-size:1rem}.sec1-actions{flex-direction:column}.button{text-align:center}}