:root {
    --bg: #f6f4f1;
    --surface: #ffffff;
    --text: #1a1f26;
    --muted: #5c6570;
    --accent: #1e5f8a;
    --accent-soft: #e8f0f7;
    --border: #e2ddd4;
    --header-h: 3.5rem;
    font-size: 100%;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "DM Sans", "Noto Sans TC", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.zh,
.zh-block {
    font-family: "Noto Sans TC", "DM Sans", sans-serif;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(246, 244, 241, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 56rem;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: var(--header-h);
}

.brand {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.brand:hover {
    text-decoration: underline;
}

.site-nav {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.site-nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.site-nav a:hover {
    color: var(--accent);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    height: 2px;
    width: 1.35rem;
    background: var(--text);
    margin: 0 auto;
}

.hero {
    background: linear-gradient(160deg, var(--accent-soft) 0%, var(--bg) 55%);
    padding: clamp(2.5rem, 8vw, 4.5rem) 1.25rem;
    border-bottom: 1px solid var(--border);
}

.hero-inner {
    max-width: 40rem;
    margin: 0 auto;
}

.eyebrow {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin: 0 0 0.75rem;
}

.hero h1 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.75rem, 5vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.hero-sub {
    margin: 0 0 1.25rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
}

.lead {
    margin: 0 0 0.85rem;
    font-size: 1.05rem;
    color: var(--muted);
    max-width: 36rem;
}

.lead:last-of-type {
    margin-bottom: 0;
}

.section {
    padding: clamp(2rem, 5vw, 3rem) 1.25rem;
}

.section-alt {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.container {
    max-width: 40rem;
    margin: 0 auto;
}

.section h2 {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section p {
    margin: 0 0 1rem;
    color: var(--muted);
}

.section p:last-child {
    margin-bottom: 0;
}

.small {
    font-size: 0.9rem;
}

.service-list {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
    color: var(--muted);
}

.service-list li {
    margin-bottom: 0.5rem;
}

.service-list strong {
    color: var(--text);
}

.address {
    font-style: normal;
    margin: 0 0 1rem;
    color: var(--text);
    line-height: 1.7;
}

.social a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.social a:hover {
    text-decoration: underline;
}

.site-footer {
    padding: 2rem 1.25rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

.footer-inner {
    text-align: center;
}

.site-footer p {
    margin: 0.35rem 0;
    font-size: 0.875rem;
    color: var(--muted);
}

.footer-domain {
    font-size: 0.8rem;
    opacity: 0.85;
}