:root {
    color-scheme: light;
    --ink: #17212b;
    --muted: #66727d;
    --line: #e5e9ed;
    --surface: #ffffff;
    --background: #f4f6f8;
    --accent: #1f7a8c;
    --accent-dark: #155565;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--background);
    color: var(--ink);
    font-family: "Segoe UI", "Microsoft JhengHei", sans-serif;
}

.hero {
    background: linear-gradient(130deg, #142c35 0%, #1b5361 60%, #277f8d 100%);
    color: white;
    padding: 56px 24px 62px;
}

.hero-inner, .content { max-width: 1180px; margin: 0 auto; }
.hero-inner { display: flex; align-items: center; gap: 22px; }
.brand-mark {
    width: 70px; height: 70px; border: 1px solid rgba(255,255,255,.45);
    border-radius: 18px; display: grid; place-items: center;
    font-size: 22px; font-weight: 700; letter-spacing: 1px;
    background: rgba(255,255,255,.12);
}
.eyebrow, .section-label { margin: 0 0 8px; font-size: 12px; letter-spacing: 2px; font-weight: 700; }
.eyebrow { color: #bde6eb; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(30px, 5vw, 46px); }
.subtitle { margin: 0; color: #d4eef0; font-size: 16px; }
.content { padding: 42px 24px 64px; }
.intro { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 24px; }
.section-label { color: var(--accent); }
h2 { margin-bottom: 8px; font-size: 28px; }
.intro p:last-child { margin-bottom: 0; color: var(--muted); }
.summary { display: flex; align-items: baseline; gap: 8px; color: var(--muted); }
.summary strong { color: var(--accent-dark); font-size: 34px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.feature-card { min-height: 190px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: 0 5px 16px rgba(20, 44, 53, .04); }
.feature-card.is-disabled { opacity: .78; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.feature-number { color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: 1px; }
.status { padding: 5px 9px; border-radius: 99px; background: #eef2f4; color: var(--muted); font-size: 11px; }
h3 { margin-bottom: 10px; font-size: 19px; }
.feature-card p { min-height: 42px; margin-bottom: 18px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.coming-soon { color: var(--accent); font-size: 13px; font-weight: 700; }
footer { padding: 0 24px 28px; text-align: center; color: #89939b; font-size: 12px; }

@media (max-width: 900px) { .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .hero { padding-top: 38px; } .hero-inner, .intro { align-items: flex-start; flex-direction: column; } .feature-grid { grid-template-columns: 1fr; } }