:root {
    --paper: #f2f0e9;
    --paper-deep: #e8e5da;
    --ink: #202721;
    --ink-soft: #566057;
    --line: #ced2c9;
    --primary: #526f55;
    --primary-deep: #384e3b;
    --primary-pale: #dce4d9;
    --serif: "Noto Serif TC", "Iowan Old Style", "Palatino Linotype", serif;
    --sans: "Noto Sans TC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-width: 320px;
    min-height: 100vh;
    color: var(--ink);
    background: var(--paper);
    font-family: var(--sans);
    font-size: 16px;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    display: block;
    height: 5px;
    background: var(--primary);
}

a { color: inherit; text-decoration: none; }

.page {
    width: min(1180px, calc(100% - 64px));
    margin: 0 auto;
    padding-bottom: 52px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    min-height: 112px;
    border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; min-width: 0; }

.brand-mark {
    flex: 0 0 auto;
    width: 64px;
    height: 46px;
    padding-right: 20px;
    border-right: 1px solid var(--line);
    object-fit: contain;
    object-position: left center;
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-left: 20px;
}

.brand-text strong {
    font-family: var(--serif);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.14em;
}

.brand-text span {
    color: var(--ink-soft);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 0 0 auto;
}

.lang-switch label {
    color: var(--ink-soft);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
}

.lang-switch select {
    min-width: 126px;
    padding: 8px 26px 8px 0;
    color: var(--primary-deep);
    border: 0;
    border-bottom: 1px solid var(--primary);
    border-radius: 0;
    outline: 0;
    background-color: transparent;
    font: 500 0.82rem/1.4 var(--sans);
    cursor: pointer;
}

.lang-switch select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
}

.hero {
    padding: clamp(64px, 8vw, 110px) 0 clamp(58px, 7vw, 92px);
    border-bottom: 1px solid var(--line);
}

.hero-inner > div {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(220px, 3fr);
    align-items: end;
    gap: clamp(52px, 9vw, 112px);
}

.hero p {
    max-width: 820px;
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(1.42rem, 2.45vw, 2.15rem);
    font-weight: 500;
    line-height: 1.78;
    letter-spacing: 0.025em;
}

.hero p::first-letter {
    float: left;
    margin: 0.12em 0.16em 0 0;
    color: var(--primary);
    font-size: 3.5em;
    font-weight: 600;
    line-height: 0.76;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--ink);
}

.button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 64px;
    padding: 0 42px 0 0;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: color 180ms ease, padding-left 180ms ease;
}

.button::after {
    content: "↗";
    position: absolute;
    right: 2px;
    color: var(--primary);
    font-family: var(--sans);
    font-size: 1.05rem;
    font-weight: 400;
}

.button:hover,
.button:focus-visible {
    padding-left: 10px;
    color: var(--primary-deep);
}

.button:focus-visible,
.site-link:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 5px;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    grid-template-rows: auto auto;
    margin: clamp(66px, 9vw, 120px) 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.card { position: relative; }

.card:first-child {
    grid-row: 1 / span 2;
    padding: clamp(44px, 6vw, 78px) clamp(46px, 7vw, 90px) clamp(50px, 7vw, 88px) 0;
    border-right: 1px solid var(--line);
}

.card:nth-child(2),
.card:nth-child(3) { padding-left: clamp(38px, 6vw, 76px); }

.card:nth-child(2) {
    padding-top: clamp(44px, 6vw, 70px);
    padding-bottom: clamp(34px, 5vw, 58px);
    border-bottom: 1px solid var(--line);
}

.card:nth-child(3) {
    padding-top: clamp(34px, 5vw, 58px);
    padding-bottom: clamp(44px, 6vw, 70px);
}

.card h2 {
    margin: 0 0 20px;
    color: var(--primary-deep);
    font-family: var(--serif);
    font-size: clamp(1.35rem, 2vw, 1.8rem);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.card:first-child h2 {
    max-width: 7em;
    margin-bottom: 32px;
    font-size: clamp(2.2rem, 4.4vw, 4rem);
    line-height: 1.2;
}

.card p {
    max-width: 38rem;
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.96rem;
    line-height: 2;
    letter-spacing: 0.015em;
}

.sites {
    display: grid;
    grid-template-columns: minmax(250px, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(58px, 9vw, 112px);
    padding: clamp(52px, 7vw, 86px);
    color: #f3f1e9;
    background: var(--primary-deep);
    box-shadow: 0 18px 45px rgba(38, 49, 39, 0.12);
}

.sites-header { align-self: start; }

.sites-header h2 {
    max-width: 6em;
    margin: 0 0 28px;
    font-family: var(--serif);
    font-size: clamp(2.35rem, 4.5vw, 4.5rem);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: 0.04em;
}

.sites-header p {
    margin: 0;
    color: #c9d2c8;
    font-size: 0.9rem;
    line-height: 1.95;
}

.site-list {
    align-self: end;
    border-top: 1px solid rgba(243, 241, 233, 0.45);
}

.site-link {
    position: relative;
    display: grid;
    grid-template-columns: minmax(7em, 0.7fr) minmax(0, 1.3fr);
    gap: 28px;
    padding: 27px 46px 27px 0;
    border-bottom: 1px solid rgba(243, 241, 233, 0.25);
    transition: padding-left 180ms ease, border-color 180ms ease;
}

.site-link::after {
    content: "↗";
    position: absolute;
    top: 26px;
    right: 0;
    color: var(--primary-pale);
}

.site-link:hover {
    padding-left: 10px;
    border-color: rgba(243, 241, 233, 0.6);
}

.site-link strong {
    font-family: var(--serif);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.site-link span {
    color: #c9d2c8;
    font-size: 0.85rem;
    line-height: 1.8;
}

.footer-note {
    max-width: 760px;
    margin: 46px 0 0 auto;
    padding: 4px 0 4px 22px;
    color: var(--ink-soft);
    border-left: 2px solid var(--primary);
    font-family: var(--serif);
    font-size: 0.88rem;
    line-height: 1.9;
    text-align: left;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(10px);
    animation: reveal 600ms cubic-bezier(0.2, 0.75, 0.25, 1) forwards;
}

[data-delay="1"] { animation-delay: 60ms; }
[data-delay="2"] { animation-delay: 120ms; }
[data-delay="3"] { animation-delay: 180ms; }
[data-delay="4"] { animation-delay: 240ms; }

@keyframes reveal {
    to { opacity: 1; transform: none; }
}

@media (max-width: 860px) {
    .page { width: min(100% - 40px, 1180px); }

    .hero-inner > div,
    .sites { grid-template-columns: 1fr; }

    .hero-inner > div { gap: 48px; }
    .hero-actions { max-width: 430px; }

    .content-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .card:first-child {
        grid-row: auto;
        padding-right: 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .card:nth-child(2),
    .card:nth-child(3) { padding-left: 0; }

    .sites { gap: 52px; }
}

@media (max-width: 560px) {
    .page {
        width: min(100% - 28px, 1180px);
        padding-bottom: 34px;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
        min-height: 0;
        padding: 26px 0 22px;
    }

    .brand-mark { width: 52px; height: 38px; padding-right: 14px; }
    .brand-text { padding-left: 14px; }
    .brand-text strong { font-size: 0.92rem; }
    .brand-text span { font-size: 0.72rem; }

    .lang-switch {
        width: 100%;
        justify-content: space-between;
    }

    .lang-switch select { flex: 1; }
    .hero { padding: 54px 0 62px; }

    .hero p {
        font-size: 1.32rem;
        line-height: 1.75;
    }

    .content-grid { margin: 70px 0; }

    .card:first-child,
    .card:nth-child(2),
    .card:nth-child(3) {
        padding-top: 40px;
        padding-bottom: 42px;
    }

    .sites {
        margin-inline: -14px;
        padding: 48px 28px;
        gap: 42px;
    }

    .site-link {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 24px 38px 24px 0;
    }

    .site-link::after { top: 24px; }
    .footer-note { margin-top: 36px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    [data-reveal] {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .button,
    .site-link { transition: none; }
}