:root {
    --paper: #fdfaf3;
    --paper-deep: #f4ecdc;
    --ink: #43392b;
    --ink-soft: #6a5e48;
    --accent: #a86a2e;
    --accent-soft: #c08a4c;
    --rule: rgba(120, 96, 58, 0.28);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'EB Garamond', Georgia, 'Times New Roman', serif;
    background-color: var(--paper);
    background-image:
        radial-gradient(ellipse at 50% -10%, rgba(255, 250, 235, 0.9), transparent 55%),
        radial-gradient(ellipse at top left, rgba(255, 244, 214, 0.55), transparent 45%),
        radial-gradient(ellipse at bottom right, rgba(226, 205, 165, 0.28), transparent 55%);
    color: var(--ink);
    line-height: 1.75;
    font-size: 1.2rem;
    min-height: 100vh;
}

.page {
    max-width: 44rem;
    margin: 0 auto;
    padding: 2.5rem 1.75rem 5rem;
}

/* ---------- Language switcher ---------- */

.lang-switcher {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 3rem;
}

.lang-switcher button {
    font-family: 'EB Garamond', 'Noto Serif SC', Georgia, serif;
    font-size: 1rem;
    letter-spacing: 0.08em;
    color: var(--ink-soft);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 2px;
    padding: 0.3rem 0.9rem;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.lang-switcher button:hover {
    color: var(--accent);
}

.lang-switcher button.active {
    color: var(--accent);
    border-color: var(--rule);
}

.lang-switcher .sep {
    align-self: center;
    color: var(--rule);
}

/* ---------- Translations ---------- */

.translation {
    display: none;
}

.translation.active {
    display: block;
}

.translation[lang="zh"] {
    font-family: 'Noto Serif SC', 'EB Garamond', serif;
}

/* ---------- Header ---------- */

header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.ornament {
    font-size: 1.4rem;
    color: var(--accent-soft);
    letter-spacing: 0.75em;
    margin-bottom: 1.5rem;
}

h1 {
    font-family: 'Cormorant Garamond', 'EB Garamond', serif;
    font-weight: 600;
    font-size: clamp(2.4rem, 6vw, 3.6rem);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink);
    line-height: 1.15;
}

.translation[lang="zh"] h1 {
    font-family: 'Noto Serif SC', serif;
    letter-spacing: 0.25em;
}

.divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 2.5rem auto;
    color: var(--accent-soft);
}

.divider::before,
.divider::after {
    content: "";
    height: 1px;
    width: min(8rem, 25vw);
    background: linear-gradient(to var(--dir, right), transparent, var(--rule));
}

.divider::before { --dir: right; }
.divider::after { --dir: left; }

/* ---------- Letter ---------- */

.letter {
    background: linear-gradient(160deg, #fffefb 0%, #faf4e8 100%);
    border: 1px solid rgba(150, 124, 84, 0.22);
    border-radius: 6px;
    box-shadow:
        0 1px 2px rgba(120, 100, 66, 0.06),
        0 14px 44px rgba(120, 100, 66, 0.14);
    padding: clamp(2rem, 6vw, 3.75rem);
    position: relative;
}

.letter::before {
    content: "";
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(122, 100, 66, 0.18);
    border-radius: 2px;
    pointer-events: none;
}

.salutation {
    font-family: 'Caveat', cursive;
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.translation[lang="zh"] .salutation {
    font-family: 'Ma Shan Zheng', 'Noto Serif SC', cursive;
}

.letter p {
    margin-bottom: 1.4rem;
    text-align: left;
}

.translation[lang="zh"] .letter p {
    text-align: justify;
}

.translation:not([lang="zh"]) .letter p:first-of-type::first-letter {
    font-family: 'Cormorant Garamond', serif;
    font-size: 3.4em;
    font-weight: 500;
    float: left;
    line-height: 0.85;
    padding-right: 0.12em;
    color: var(--accent);
}

blockquote {
    margin: 2.25rem 1.5rem;
    padding-left: 1.25rem;
    border-left: 2px solid var(--accent-soft);
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 1.3rem;
    color: var(--ink-soft);
    text-align: left;
}

.translation[lang="zh"] blockquote {
    font-family: 'Noto Serif SC', serif;
    font-style: normal;
}

blockquote footer {
    margin-top: 0.6rem;
    font-size: 1.05rem;
    font-style: normal;
    letter-spacing: 0.08em;
    color: var(--accent);
}

.signoff {
    margin-top: 2.5rem;
    text-align: right;
}

.signoff .closing {
    font-style: italic;
    color: var(--ink-soft);
    margin-bottom: 0.25rem;
}

.signoff .signature {
    font-family: 'Caveat', cursive;
    font-size: 2.1rem;
    color: var(--accent);
}

.translation[lang="zh"] .signoff .closing {
    font-style: normal;
}

.translation[lang="zh"] .signoff .signature {
    font-family: 'Ma Shan Zheng', 'Noto Serif SC', cursive;
    font-size: 1.9rem;
}

/* ---------- Footer ---------- */

.page-footer {
    margin-top: 3.5rem;
    text-align: center;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    color: var(--ink-soft);
    font-size: 1.1rem;
}

.translation[lang="zh"] .page-footer {
    font-family: 'Noto Serif SC', serif;
    font-style: normal;
}

.page-footer .mark {
    display: block;
    font-size: 1.3rem;
    color: var(--accent-soft);
    letter-spacing: 0.5em;
    margin-bottom: 0.75rem;
}

/* ---------- QR code ---------- */

.qr-block {
    margin-top: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.qr-block a {
    display: inline-block;
    background: #fdfbf5;
    padding: 0.9rem;
    border-radius: 6px;
    border: 1px solid rgba(122, 100, 66, 0.25);
    box-shadow: 0 4px 16px rgba(58, 50, 38, 0.12);
    line-height: 0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qr-block a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(58, 50, 38, 0.18);
}

.qr-block img {
    display: block;
    width: 140px;
    height: 140px;
}

.qr-block .qr-caption {
    margin-top: 1rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 1.05rem;
    letter-spacing: 0.03em;
    color: var(--ink-soft);
}

.qr-block .qr-caption a {
    all: unset;
    color: var(--accent);
    cursor: pointer;
    text-decoration: none;
}

.qr-block .qr-caption a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    body {
        font-size: 1.1rem;
    }
    blockquote {
        margin: 2rem 0.5rem;
    }
}