:root {
    --primary: #2c3e50;
    --primary-soft: #38556f;
    --accent: #e67e22;
    --gold: #f1c40f;
    --pink: #ff758c;
    --aqua: #0ea5e9;
    --bg: #fdfbf7;
    --card: #ffffff;
    --text: #334155;
    --muted: #64748b;
    --line: #e8edf2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft JhengHei", "Noto Sans TC", sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

a { color: inherit; }
.guide-hero {
    position: relative;
    overflow: hidden;
    padding: 72px 20px 82px;
    color: #fff;
    text-align: center;
    background:
        radial-gradient(circle at 16% 22%, rgba(255,255,255,.22), transparent 24%),
        radial-gradient(circle at 86% 15%, rgba(255,255,255,.16), transparent 20%),
        linear-gradient(135deg, var(--primary), var(--primary-soft) 52%, #0f766e);
}
.guide-hero::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -100px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 50px solid rgba(255,255,255,.06);
}
.guide-hero-inner { position: relative; z-index: 1; max-width: 930px; margin: 0 auto; }
.guide-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding: 7px 17px;
    border: 1px solid rgba(255,255,255,.38);
    border-radius: 999px;
    background: rgba(255,255,255,.13);
    font-size: .9rem;
    font-weight: 800;
    letter-spacing: .04em;
}
.guide-hero h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.25rem);
    line-height: 1.25;
    text-shadow: 0 4px 20px rgba(0,0,0,.24);
}
.guide-hero p {
    max-width: 760px;
    margin: 18px auto 0;
    color: rgba(255,255,255,.9);
    font-size: 1.12rem;
}
.guide-container {
    position: relative;
    z-index: 2;
    width: min(1000px, calc(100% - 32px));
    margin: -34px auto 80px;
}
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 0 0 16px;
    padding: 12px 18px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255,255,255,.97);
    box-shadow: 0 8px 28px rgba(44,62,80,.07);
    color: var(--muted);
    font-size: .9rem;
}
.breadcrumb a { color: #0369a1; text-decoration: none; font-weight: 800; }
.keyword-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.keyword-chip {
    display: inline-flex;
    padding: 6px 12px;
    border: 1px solid #fde68a;
    border-radius: 999px;
    background: #fffbeb;
    color: #92400e;
    font-size: .84rem;
    font-weight: 800;
}
.intro-card,
.content-card,
.faq-card,
.source-card,
.cta-card {
    margin-bottom: 24px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--card);
    box-shadow: 0 10px 30px rgba(44,62,80,.07);
}
.intro-card { border-top: 5px solid var(--gold); font-size: 1.08rem; }
.intro-card p:first-child { margin-top: 0; }
.intro-card p:last-child { margin-bottom: 0; }
.content-card { border-top: 5px solid var(--accent); }
.content-card:nth-of-type(even) { border-top-color: var(--aqua); }
.content-card h2,
.faq-card h2,
.source-card h2 {
    margin: 0 0 18px;
    color: var(--primary);
    font-size: clamp(1.45rem, 3vw, 1.9rem);
    line-height: 1.35;
}
.content-card h3 { margin: 24px 0 10px; color: #c2410c; font-size: 1.15rem; }
.content-card p { margin: 12px 0; }
.content-card ul,
.content-card ol { margin: 14px 0 0; padding-left: 1.35rem; }
.content-card li { margin: 8px 0; padding-left: 4px; }
.notice {
    margin-top: 20px;
    padding: 16px 18px;
    border-left: 5px solid var(--gold);
    border-radius: 10px;
    background: #fffbeb;
    color: #713f12;
}
.guide-table-wrap { overflow-x: auto; margin-top: 18px; }
.guide-table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    font-size: .96rem;
}
.guide-table th,
.guide-table td { padding: 13px 15px; border: 1px solid #dfe7ee; text-align: left; vertical-align: top; }
.guide-table th { background: #edf6fb; color: #0c4a6e; }
.faq-card { border-top: 5px solid var(--pink); }
.faq-card details {
    margin-top: 12px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
}
.faq-card summary {
    padding: 16px 18px;
    cursor: pointer;
    color: var(--primary);
    font-weight: 900;
    list-style-position: inside;
}
.faq-answer { padding: 0 18px 17px; color: #475569; }
.source-card { border-top: 5px solid #94a3b8; }
.source-card ul { margin: 0; padding-left: 1.25rem; }
.source-card a { color: #0369a1; font-weight: 800; }
.related-title { margin: 38px 0 16px; color: var(--primary); text-align: center; font-size: 1.75rem; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 16px;
}
.related-card {
    display: block;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    text-decoration: none;
    box-shadow: 0 7px 22px rgba(44,62,80,.06);
    transition: .25s ease;
}
.related-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.related-card strong { display: block; margin-bottom: 7px; color: var(--primary); font-size: 1.08rem; }
.related-card span { color: var(--muted); font-size: .93rem; }
.cta-card {
    margin-top: 28px;
    border: 0;
    color: #fff;
    text-align: center;
    background: linear-gradient(135deg, var(--pink), var(--accent));
}
.cta-card h2 { margin: 0 0 10px; font-size: 1.8rem; }
.cta-card p { margin: 0 0 20px; color: rgba(255,255,255,.92); }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border: 2px solid #fff;
    border-radius: 999px;
    background: #fff;
    color: #c2410c;
    text-decoration: none;
    font-weight: 900;
}
.cta-btn.secondary { background: transparent; color: #fff; }
.cute-nav {
    position: fixed;
    bottom: 20px;
    left: 50%;
    z-index: 99990;
    display: flex;
    gap: 22px;
    padding: 10px 23px;
    transform: translateX(-50%);
    border: 2px solid var(--gold);
    border-radius: 50px;
    background: rgba(255,255,255,.95);
    box-shadow: 0 10px 30px rgba(0,0,0,.15);
    backdrop-filter: blur(10px);
}
.cute-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--primary);
    text-decoration: none;
    font-size: .78rem;
    font-weight: 900;
    white-space: nowrap;
}
.cute-nav .nav-icon { font-size: 1.45rem; line-height: 1.2; }
.guide-footer {
    padding: 46px 20px 125px;
    background: #222;
    color: #aaa;
    text-align: center;
}
.guide-footer strong { color: #ddd; }

@media (max-width: 720px) {
    .guide-hero { padding: 52px 16px 72px; }
    .guide-hero p { font-size: 1rem; }
    .guide-container { width: min(100% - 20px, 1000px); }
    .intro-card,
    .content-card,
    .faq-card,
    .source-card,
    .cta-card { padding: 22px 18px; border-radius: 16px; }
    .cute-nav { width: 96%; justify-content: space-around; gap: 6px; padding: 10px 8px; bottom: 14px; }
    .cute-nav .nav-item { font-size: .67rem; }
    .cute-nav .nav-icon { font-size: 1.25rem; }
}