:root {
    --paper: #f3eee4;
    --paper-2: #fffdf8;
    --ink: #1a2421;
    --muted: #4e5b54;
    --pine: #1f4d3a;
    --pine-deep: #143328;
    --gold: #6d5228;
    --clay: #b54832;
    --line: rgba(26, 36, 33, 0.14);
    --shadow: 0 18px 40px rgba(20, 51, 40, 0.08);
    --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", serif;
    --sans: "Noto Sans TC", "PingFang TC", "Noto Sans CJK TC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background:
        radial-gradient(circle at top left, rgba(176, 137, 72, 0.16), transparent 32rem),
        var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 1.05rem;
    line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: var(--pine); }
h1, h2, h3 { font-family: var(--serif); line-height: 1.25; font-weight: 560; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.3rem, 5vw, 4.4rem); margin: 0 0 0.6rem; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin: 0 0 0.7rem; }
h3 { font-size: 1.35rem; margin: 0 0 0.4rem; }
p { margin: 0 0 1rem; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.skip {
    position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: white; padding: 0.5rem 0.8rem;
}
.skip:focus { top: 1rem; z-index: 5; }

.site-header {
    position: sticky; top: 0; z-index: 4;
    background: rgba(243, 238, 228, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
.header-bar { display: flex; align-items: center; gap: 0.8rem; min-height: 4.6rem; }
.brand { display: flex; gap: 0.7rem; align-items: center; text-decoration: none; color: inherit; margin-right: auto; }
.brand strong, .brand small { display: block; }
.brand strong { font-family: var(--serif); font-size: 1.2rem; letter-spacing: 0; }
.brand small { color: var(--muted); font-size: 0.78rem; }
.mark {
    width: 2.75rem; height: 2.75rem; border-radius: 50%;
    object-fit: cover; background: #fff; flex: none;
    box-shadow: 0 0 0 1px rgba(26, 36, 33, 0.12);
}
.footer-mark { width: 3.4rem; height: 3.4rem; margin-bottom: 0.7rem; }
.site-nav { display: flex; gap: 1.1rem; }
.site-nav a { text-decoration: none; color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--clay); }
.nav-toggle { display: none; }
.socials, .social-menu { display: flex; align-items: center; gap: 0.45rem; }
.socials a, .social-menu a {
    color: var(--ink); text-decoration: none;
}
.socials a {
    width: 2.25rem; height: 2.25rem; border-radius: 50%;
    display: grid; place-items: center;
    box-shadow: inset 0 0 0 1.5px rgba(26, 36, 33, 0.28);
}
.socials svg { width: 1.05rem; height: 1.05rem; }
.social-menu { display: none; }
.visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.btn, button.btn {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--clay); color: #fffdf8; text-decoration: none;
    border: 0; border-radius: 999px; padding: 0.75rem 1.15rem;
    font: inherit; font-weight: 700; cursor: pointer;
}
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn-small { padding: 0.55rem 0.9rem; font-size: 0.92rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: center; margin-top: 1.2rem; }
.actions .text-link { font-weight: 700; }
.kicker { color: var(--gold); font-weight: 700; letter-spacing: 0.08em; margin-bottom: 0.4rem; }
.lede { font-size: 1.15rem; max-width: 42rem; color: var(--ink); }
.note { color: var(--muted); font-size: 0.95rem; }
.meta { color: var(--muted); }

.hero { padding: 1.4rem 0 1rem; }
.hero-banner { width: 100%; height: auto; border-radius: 1.2rem; margin: 0 0 1.6rem; }
.about-layout { display: grid; grid-template-columns: minmax(12rem, 18rem) 1fr; gap: 1.6rem; align-items: start; max-width: 1120px; }
.about-portrait { width: 100%; height: auto; border-radius: 1.1rem; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 2rem; align-items: end; }
.hero-card {
    background: var(--pine-deep); color: #f6f1e7;
    border-radius: 1.4rem 1.4rem 2.4rem 1.4rem;
    padding: 1.4rem 1.4rem 1.2rem;
    box-shadow: var(--shadow);
}
.hero-card ol { list-style: none; margin: 0; padding: 0; }
.hero-card li { display: flex; gap: 0.7rem; margin: 0.85rem 0; }
.hero-card span { font-family: var(--serif); color: #e6c98a; }
.card-label { margin: 0; letter-spacing: 0.12em; font-size: 0.82rem; }
.hero-card .text-link { color: #f6f1e7; }

.section-head, .split { display: flex; justify-content: space-between; gap: 1rem; align-items: end; flex-wrap: wrap; }
.pillars, .feed, .page-intro, .article, .topic-list, .seminar-layout { padding: 2.2rem 0; }
.pillar-grid, .card-grid, .topic-list { display: grid; gap: 1rem; }
.pillar-grid { grid-template-columns: repeat(auto-fit, minmax(13.5rem, 1fr)); }
.card-grid { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.topic-list { grid-template-columns: 1fr 1fr; }
.pillar, .post-card, .topic-list article, .contact-card, .related, .inner-band {
    background: var(--paper-2);
    border: 1px solid var(--line);
    border-radius: 1.1rem;
}
.pillar, .topic-list article { padding: 1.1rem 1.1rem 1rem; text-decoration: none; color: inherit; display: block; min-height: 11rem; }
.pillar p, .topic-list p { color: var(--gold); }
.pillar h3, .topic-list h2 { color: var(--ink); }
.pillar span, .topic-list a { color: var(--clay); font-weight: 700; }

.post-card { overflow: hidden; display: flex; flex-direction: column; }
.post-visual { min-height: 9rem; background: var(--pine); color: #f4efe6; display: grid; place-items: center; text-decoration: none; }
.post-visual img { width: 100%; height: 12rem; object-fit: cover; }
.pattern { background:
    linear-gradient(160deg, rgba(255,255,255,0.08), transparent 40%),
    repeating-linear-gradient(135deg, #1f4d3a, #1f4d3a 12px, #143328 12px, #143328 24px);
}
.post-body { padding: 1rem 1rem 1.1rem; }
.post-body h3 a { color: inherit; text-decoration: none; }

.band { background: var(--pine); color: #f6f1e7; padding: 2rem 0; }
.band .btn-ghost { color: #f6f1e7; box-shadow: inset 0 0 0 1.5px #f6f1e7; }
.inner-band { background: var(--pine-deep); color: #f6f1e7; padding: 1.2rem; margin: 1.5rem 0; }
.inner-band .btn { background: #f3eee4; color: var(--pine-deep); }

.article { max-width: 820px; }
.article.about-layout { max-width: 1120px; }
.article-image { width: 100%; border-radius: 1rem; margin: 1rem 0; max-height: 28rem; object-fit: cover; }
.prose p { font-size: 1.08rem; }
.plain-list { padding-left: 1.2rem; }
.related { padding: 1rem 1.1rem; margin-top: 1.5rem; }
.seminar-layout { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 1.2rem; align-items: start; }
.stack-form, .contact-card { background: var(--paper-2); border: 1px solid var(--line); border-radius: 1.1rem; padding: 1.1rem; }
.stack-form { display: grid; gap: 0.85rem; }
.stack-form label, .check { display: grid; gap: 0.35rem; font-weight: 700; }
.stack-form input, .stack-form select, .stack-form textarea {
    width: 100%; font: inherit; font-weight: 400; padding: 0.7rem 0.75rem;
    border-radius: 0.7rem; border: 1px solid var(--line); background: white; color: var(--ink);
}
.check { grid-template-columns: auto 1fr; align-items: start; font-weight: 400; }
.check input { width: auto; margin-top: 0.35rem; }
.honey { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.field-error { color: var(--clay); font-weight: 500; }
.notice { background: #e7f2ea; border: 1px solid #b7d7c2; padding: 0.8rem 1rem; border-radius: 0.8rem; margin-bottom: 1rem; }
.notice-error { background: #fdecea; border-color: #f0c2b8; }
.contact-card h2 { font-size: 1.3rem; }
.contact-card ul { padding-left: 1.1rem; }

.site-footer { background: var(--pine-deep); color: #efe7da; margin-top: 2rem; padding: 2.2rem 0 1rem; }
.site-footer a { color: #efe7da; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1.5rem; }
.footer-grid h2 { font-size: 1rem; font-family: var(--sans); letter-spacing: 0.08em; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.mark-line { letter-spacing: 0.14em; color: #e6c98a; }
.legal { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 1.2rem; padding-top: 0.8rem; color: #d9d0c3; font-size: 0.92rem; }

:focus-visible { outline: 3px solid #e6c98a; outline-offset: 2px; }
@media (max-width: 1180px) {
    .header-bar .btn-small { display: none; }
}
@media (max-width: 900px) {
    .hero-grid, .about-layout, .topic-list, .seminar-layout, .footer-grid, .section-head, .split {
        grid-template-columns: 1fr;
        display: grid;
    }
    .nav-toggle {
        display: inline-flex; background: transparent; border: 1px solid var(--line);
        border-radius: 999px; padding: 0.4rem 0.8rem; font: inherit;
    }
    .site-nav {
        display: none; position: absolute; left: 0; right: 0; top: 4.6rem;
        background: var(--paper-2); border-bottom: 1px solid var(--line);
        padding: 0.6rem 1rem 1rem; flex-direction: column;
    }
    .about-portrait { max-width: 16rem; }
    .site-nav.is-open { display: flex; }
    .social-menu { display: flex; flex-direction: column; gap: 0.8rem; padding-top: 0.4rem; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}
body.admin-bar .site-header { top: 32px; }
@media (max-width: 782px) {
    body.admin-bar .site-header { top: 46px; }
}