:root {
    --color-primary: #2e8b57;
    --color-primary-hover: #246c45;
    --color-primary-soft: #e8f3ec;
    --color-accent: #f0a51f;
    --color-accent-soft: #fdf3e0;
    --color-text: #2c3e50;
    --color-muted: #6b7a7d;
    --color-bg: #f7faf8;
    --color-card: #ffffff;
    --color-border: #e0e6e2;
    --radius: 14px;
    --shadow: 0 2px 6px rgba(46, 139, 87, 0.08), 0 8px 24px rgba(46, 139, 87, 0.06);
    --max-width: 1040px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
}

img { max-width: 100%; }

a { color: var(--color-primary); }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--color-border);
}

.site-header::before {
    content: "";
    display: block;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.brand {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 18px;
    white-space: nowrap;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-nav a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 15px;
    padding: 8px 14px;
    border-radius: 999px;
    transition: background 0.15s;
    white-space: nowrap;
}

.site-nav a:hover { background: var(--color-primary-soft); }

.site-nav a.active {
    background: var(--color-primary);
    color: #fff;
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 20px;
    line-height: 1;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--color-text);
}

/* ---------- hero ---------- */
.hero {
    background: linear-gradient(160deg, var(--color-primary-soft) 0%, #fff 55%, var(--color-accent-soft) 100%);
    padding: 72px 0 64px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(28px, 5vw, 44px);
    margin: 0 0 16px;
    line-height: 1.35;
}

.hero h1 em {
    font-style: normal;
    color: var(--color-primary);
}

.hero p.lead {
    font-size: clamp(16px, 2.5vw, 19px);
    color: var(--color-muted);
    max-width: 640px;
    margin: 0 auto 32px;
}

.hero-logo { width: 120px; height: 120px; margin-bottom: 8px; }

.badge {
    display: inline-block;
    background: var(--color-accent-soft);
    color: #a06c05;
    border: 1px solid #f3d9a4;
    border-radius: 999px;
    padding: 6px 18px;
    font-size: 14px;
    margin-bottom: 20px;
}

.btn-row {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    text-decoration: none;
    border-radius: 999px;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.1s, box-shadow 0.15s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(46, 139, 87, 0.3);
}

.btn-primary:hover { background: var(--color-primary-hover); }

.btn-outline {
    background: #fff;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover { background: var(--color-primary-soft); }

/* ---------- sections ---------- */
.section { padding: 64px 0; }

.section.alt { background: #fff; }

.section-title {
    text-align: center;
    font-size: clamp(24px, 4vw, 32px);
    margin: 0 0 8px;
}

.section-sub {
    text-align: center;
    color: var(--color-muted);
    margin: 0 auto 40px;
    max-width: 620px;
}

.section-title::after {
    content: "";
    display: block;
    width: 56px;
    height: 4px;
    border-radius: 2px;
    margin: 14px auto 0;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

/* ---------- cards ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 26px 22px;
}

.card .icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    background: var(--color-primary-soft);
    border: 1px solid #cde5d6;
    border-radius: 50%;
    margin-bottom: 14px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.card p {
    margin: 0;
    font-size: 14.5px;
    color: var(--color-muted);
}

/* ---------- product teaser / split ---------- */
.split {
    display: flex;
    align-items: center;
    gap: 40px;
}

.split .split-img {
    flex: 0 0 260px;
    text-align: center;
}

.split .split-img img { width: 220px; }

.split .split-body { flex: 1; }

.split h2 { margin-top: 0; }

.feature-list {
    list-style: none;
    padding: 0;
    margin: 16px 0;
}

.feature-list li {
    padding: 6px 0 6px 30px;
    position: relative;
}

.feature-list li::before {
    content: "✅";
    position: absolute;
    left: 0;
}

/* ---------- contact ---------- */
.contact-box {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 36px 28px;
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.contact-box .email {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    word-break: break-all;
}

.contact-box dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 18px;
    text-align: left;
    max-width: 400px;
    margin: 24px auto 0;
    font-size: 15px;
}

.contact-box dt { color: var(--color-muted); white-space: nowrap; }
.contact-box dd { margin: 0; }

/* ---------- footer ---------- */
.site-footer {
    background: #24513a;
    color: #d7e8dd;
    padding: 28px 0;
    font-size: 14px;
    text-align: center;
}

.site-footer p { margin: 4px 0; }

.site-footer a { color: #ffd98a; text-decoration: none; }

/* ---------- about ---------- */
.prose {
    max-width: 720px;
    margin: 0 auto;
    font-size: 16px;
}

.prose p { margin: 0 0 16px; }

/* ---------- security list ---------- */
.check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 14px;
    max-width: 860px;
    margin: 0 auto;
}

.check-item {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px 18px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 15px;
}

.check-item .mark { font-size: 20px; line-height: 1.4; }

.check-item b { display: block; margin-bottom: 2px; }

.check-item span.desc { color: var(--color-muted); font-size: 14px; }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
    .nav-toggle { display: block; }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow);
        padding: 8px 12px 14px;
    }

    .site-nav.open { display: flex; }

    .site-nav a { padding: 12px 14px; border-radius: 10px; }

    .hero { padding: 48px 0 44px; }

    .split { flex-direction: column; gap: 24px; }

    .split .split-img { flex: none; }

    .section { padding: 44px 0; }
}