/* Knock Knock 網站接待 — landing draft. Self-contained; no external fonts/scripts (CSP: self only). */
:root{--kk-navy:#13345a;--kk-amber:#f2a83b;--ink:#163341;--muted:#5b6478;--paper:#f7f5f0;--line:#e3e6ed}
*{box-sizing:border-box}body{margin:0;font:16px/1.7 system-ui,-apple-system,"Noto Sans TC",sans-serif;color:var(--ink);background:#fff}
a{color:var(--kk-navy)}.wrap{max-width:1080px;margin:auto;padding:0 24px}
.draft{background:#fff4dc;color:#6b4a0a;font-size:13px;text-align:center;padding:8px 16px}
.top{display:flex;align-items:center;justify-content:space-between;padding:22px 0}.logo{font-weight:800;letter-spacing:.02em;color:var(--kk-navy);text-decoration:none;font-size:18px}.logo span{color:var(--kk-amber)}
.top nav a{margin-left:22px;font-size:14px;color:var(--muted);text-decoration:none}
.hero{padding:56px 0 48px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:#ad690b}
h1{font-size:clamp(34px,4.6vw,54px);line-height:1.18;letter-spacing:-.03em;margin:14px 0 18px;color:var(--kk-navy)}
.lead{font-size:19px;color:var(--muted);max-width:560px}
.cta{display:inline-flex;align-items:center;gap:10px;margin:26px 12px 0 0;padding:14px 22px;border-radius:999px;background:var(--kk-amber);color:var(--kk-navy);font-weight:750;text-decoration:none}.cta.ghost{background:#fff;border:1px solid var(--line);color:var(--kk-navy)}
.note{font-size:13px;color:var(--muted);margin-top:14px}
.mock{border:1px solid var(--line);border-radius:18px;background:var(--paper);padding:22px;min-height:360px;position:relative;overflow:hidden}
.mock .bubble{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:10px 0;max-width:86%;font-size:15px}.mock .me{margin-left:auto;background:#e8eff8}
.mock .k{font-size:12px;color:#62798a;font-weight:650}.mock .chip{display:inline-block;border:1px solid #9ab2c5;border-radius:8px;padding:6px 10px;font-size:13px;margin:6px 6px 0 0;background:#fff}
.mock .dot{position:absolute;right:18px;bottom:18px;width:52px;height:52px;border-radius:50%;background:var(--kk-amber);box-shadow:0 8px 30px #6b4a0a40}
section.feat{padding:40px 0;border-top:1px solid var(--line)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff}.card h3{margin:8px 0 6px;font-size:18px;color:var(--kk-navy)}.card p{margin:0;color:var(--muted);font-size:15px}.card .n{font-weight:800;color:var(--kk-amber);font-size:22px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}.steps div{padding:18px;border-radius:12px;background:var(--paper);font-size:15px}.steps div::before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--kk-navy);color:#fff;font-weight:700;margin-bottom:8px}
.compare{width:100%;border-collapse:collapse;font-size:15px}.compare th,.compare td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}.compare th{color:var(--muted);font-weight:650;font-size:13px}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{cursor:pointer;font-weight:650}
footer{padding:36px 0 60px;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
@media(max-width:820px){.hero{grid-template-columns:1fr;padding:36px 0}.grid,.steps{grid-template-columns:1fr}.top nav{display:none}}