:root{
  --green:#15803D;
  --green-hover:#0f6b32;
  --green-soft:#DCFCE7;
  --light:#F0FCEF;
  --ink:#0F172A;
  --ink-deep:#07110C;
  --muted:#64748B;
  --line:#E2E9F0;
  --white:#fff;
  --font-cn:"Sarasa Gothic SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-en:"Inter",system-ui,sans-serif;
  --font-kr:"Noto Sans KR",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-cn);color:var(--ink);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--green);font-weight:700;font-family:var(--font-en)}
.section{padding:96px 0}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:34px;font-weight:800;margin:10px 0 14px;letter-spacing:-.01em}
.section-head p{color:var(--muted);font-size:17px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 30px;border-radius:50px;font-weight:600;font-size:16px;cursor:pointer;border:1.5px solid transparent;transition:.18s;font-family:var(--font-cn)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-hover);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--green);border-color:var(--green)}
.btn-ghost:hover{background:var(--green-soft)}
.btn-on-green{background:#fff;color:var(--green)}
.btn-on-green:hover{background:#eafaf0}
.btn-outline-green{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-green:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* header */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--green);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:18px;font-family:var(--font-en)}
.nav{display:flex;gap:32px;font-size:15px;color:#334155}
.nav a:hover{color:var(--green)}

/* hero */
.hero{position:relative;background:#fff;padding:72px 0 40px;overflow:hidden}
.hero::before{content:"";position:absolute;top:120px;right:-120px;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(74,222,128,.20),rgba(74,222,128,0) 70%);pointer-events:none}
.hero .wrap{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--green-soft);color:var(--green);font-size:14px;font-weight:600;padding:7px 16px;border-radius:50px;margin-bottom:26px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green)}
.hero-lead{font-size:18px;color:#475569;max-width:760px;margin:18px auto 8px}
.headline{font-size:56px;line-height:1.15;font-weight:900;letter-spacing:-.02em;margin:6px 0}
.headline .hl{color:var(--green)}
.cta-row{display:flex;gap:16px;margin:34px 0 14px;flex-wrap:wrap;justify-content:center}
.trust{font-size:14px;color:var(--muted)}

/* product mockup */
.mockup{width:100%;max-width:1000px;margin:54px auto 0;background:#fff;border-radius:18px;box-shadow:0 30px 70px -30px rgba(15,23,42,.30);border:1px solid var(--line);overflow:hidden}
.browser-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#f1f5f9;border-bottom:1px solid var(--line)}
.browser-bar .dots{display:flex;gap:6px}
.browser-bar .dots i{width:11px;height:11px;border-radius:50%;display:block}
.browser-bar .dots i:nth-child(1){background:#ef4444}
.browser-bar .dots i:nth-child(2){background:#f59e0b}
.browser-bar .dots i:nth-child(3){background:#10b981}
.browser-bar .url{flex:1;background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:6px 14px;font-size:13px;color:#64748b;font-family:var(--font-en);text-align:left}
.mockup-body{background:#f8fafc}
.mockup-body img{width:100%;display:block}

/* mode tags */
.mode-tags{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:40px auto 0}
.mode-tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:50px;padding:10px 20px;font-size:15px;font-weight:600;box-shadow:0 8px 20px -14px rgba(15,23,42,.25)}
.mode-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--green)}
.scroll-hint{margin:46px auto 0;display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--muted);font-size:13px}
.scroll-hint .arrow{width:22px;height:22px;border-right:2px solid #94a3b8;border-bottom:2px solid #94a3b8;transform:rotate(45deg)}

/* core features */
.core{background:#fff}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:88px}
.feature:last-child{margin-bottom:0}
.feature.reversed .f-text{order:2}
.feature .idx{font-family:var(--font-en);font-size:15px;font-weight:700;color:var(--green);letter-spacing:.08em}
.feature h3{font-size:28px;font-weight:800;margin:10px 0 14px}
.feature p{color:#475569;font-size:17px;max-width:480px}
.feature .visual{background:#f8fafc;border-radius:24px;border:1px solid var(--line);overflow:hidden;box-shadow:0 24px 60px -34px rgba(15,23,42,.28)}
.feature .visual img{width:100%}

/* generic showcase (local media / interpretation) */
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.showcase .copy h3{font-size:30px;font-weight:800;margin:12px 0 16px}
.showcase .copy p{color:#475569;font-size:17px;max-width:500px}
.points{list-style:none;margin-top:24px;display:flex;flex-direction:column;gap:14px}
.points li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:#334155}
.points .check{flex:none;width:24px;height:24px;border-radius:50%;background:var(--green-soft);color:var(--green);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px}
.screen{background:#fff;border-radius:24px;border:1px solid var(--line);overflow:hidden;box-shadow:0 26px 60px -34px rgba(15,23,42,.30)}
.screen img{width:100%}

/* section bgs */
.bg-light{background:var(--light)}
.bg-white{background:#fff}

/* interpretation dark card */
.interp-card{background:var(--ink-deep);border-radius:28px;padding:48px;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;overflow:hidden}
.interp-card .screen{border:none;box-shadow:none;background:transparent;border-radius:18px;overflow:hidden}
.interp-card .copy .eyebrow{color:#4ade80}
.interp-card .copy h3{color:#fff;font-size:28px;font-weight:800;margin:10px 0 14px}
.interp-card .copy p{color:#cbd5e1;font-size:16px}
.interp-card .points li{color:#e2e8f0}
.interp-card .points .check{background:rgba(74,222,128,.18);color:#4ade80}

/* transcript export */
.export{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;margin-top:88px}
.export .screen{border:none;box-shadow:0 26px 60px -34px rgba(15,23,42,.30);border-radius:24px}
.tags{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.tag{background:var(--green-soft);color:var(--green);font-weight:600;font-size:14px;padding:8px 18px;border-radius:50px}

/* use cases */
.cases-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:0 18px 44px -30px rgba(15,23,42,.22)}
.case.featured{background:var(--green);border-color:var(--green);color:#fff}
.case .num{font-family:var(--font-en);font-weight:800;color:var(--green);font-size:15px;letter-spacing:.06em}
.case.featured .num{color:#bbf7d0}
.case h3{font-size:22px;font-weight:800;margin:10px 0 10px}
.case p{font-size:15.5px;color:#475569}
.case.featured p{color:rgba(255,255,255,.9)}
.case .sub{margin-top:14px;font-size:13.5px;color:var(--muted)}
.case.featured .sub{color:#bbf7d0}

/* final cta */
.final{background:var(--green);color:#fff;text-align:center;padding:88px 0}
.final h2{font-size:38px;font-weight:900;letter-spacing:-.01em}
.final p{font-size:18px;color:rgba(255,255,255,.9);margin:14px auto 32px;max-width:620px}
.final .cta-row{justify-content:center}

/* footer */
.footer{background:var(--ink);color:#cbd5e1;padding:64px 0 28px}
.footer .top{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;padding-bottom:40px}
.footer .brand .logo{color:#fff;margin-bottom:16px}
.footer .brand p{font-size:15px;max-width:380px;color:#94a3b8}
.footer .cols{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.footer .col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer .col a{display:block;font-size:14.5px;color:#94a3b8;margin-bottom:10px}
.footer .col a:hover{color:#fff}
.footer .divider{height:1px;background:#1e293b;margin:8px 0 22px}
.footer .bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13.5px;color:#94a3b8}
.footer .bottom a{color:#cbd5e1}
.footer .bottom a:hover{color:#fff;text-decoration:underline}

/* responsive */
@media(max-width:900px){
  .nav{display:none}
  .headline{font-size:40px}
  .feature,.showcase,.interp-card,.export{grid-template-columns:1fr;gap:32px}
  .feature.reversed .f-text{order:0}
  .interp-card{padding:28px}
  .cases-grid{grid-template-columns:1fr}
  .footer .top{grid-template-columns:1fr}
  .section{padding:64px 0}
}