/* ========== 变量 ========== */
:root {
    --c-tea: #3E2A1F;
    --c-tea-deep: #2A1B12;
    --c-cream: #F5EFE6;
    --c-cream-2: #EFE7DB;
    --c-sand: #D4B896;
    --c-ink: #1A1A1A;
    --c-ink-2: #5A4A3E;
    --c-ink-3: #8A7868;
    --c-line: #E2D8C8;
    --c-vermilion: #6E111B;

    --font-serif-cn: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
    --font-serif-en: "Playfair Display", Georgia, serif;
    --font-sans-cn: "PingFang SC", "Microsoft YaHei", sans-serif;

    --w-container: 1240px;
    --w-narrow: 760px;

    --r-sm: 2px;
    --r-md: 4px;
    --r-lg: 8px;

    --shadow-sm: 0 1px 2px rgba(62,42,31,0.08);
    --shadow-md: 0 4px 16px rgba(62,42,31,0.10);
    --shadow-lg: 0 12px 40px rgba(62,42,31,0.18);

    --t-fast: 0.2s ease;
    --t-base: 0.4s ease;
    --t-slow: 0.8s ease;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }

body {
    font-family: var(--font-serif-cn);
    font-size: 16px;
    line-height: 1.8;
    color: var(--c-ink);
    background-color: var(--c-cream);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: var(--font-serif-cn);
    font-weight: 500;
    color: var(--c-tea);
    line-height: 1.3;
    letter-spacing: 0.02em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--c-ink-2); }
.english, .en { font-family: var(--font-serif-en); letter-spacing: 0.05em; }

.container {
    width: 100%;
    max-width: var(--w-container);
    margin: 0 auto;
    padding: 0 24px;
}
.narrow { max-width: var(--w-narrow); margin-left: auto; margin-right: auto; }
.text-center { text-align: center; }

.section { padding: 96px 0; }
@media (max-width: 768px) {
    .section { padding: 64px 0; }
}
.section-eyebrow {
    font-family: var(--font-serif-en);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-size: 0.75rem;
    color: var(--c-vermilion);
    margin-bottom: 16px;
}
.section-title { margin-bottom: 24px; }
.section-title.light { color: var(--c-cream); }
.section-lede {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--c-ink-2);
    max-width: 640px;
}
.section-lede.light { color: rgba(245,239,230,0.85); }
.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}
.section-head .section-title { margin-bottom: 0; }
.link-more {
    font-family: var(--font-serif-cn);
    color: var(--c-tea);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--c-tea);
    padding-bottom: 2px;
    transition: gap var(--t-fast);
}
.link-more:hover { color: var(--c-vermilion); border-color: var(--c-vermilion); }