:root {
    --paper: #f4efe6;
    --paper-2: #ebe4d6;
    --ink: #2c241c;
    --mute: #6b5e52;
    --line: #d3c9b8;
    --orange: #d4651a;
    --brown: #5a3a28;
    --blue: #1a5aa8;
    --white: #fffdf8;
    --nav: 64px;
}
*, *::before, *::after { box-sizing: border-box; }
html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav) + 8px);
}
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
    font-size: 17px;
    line-height: 1.75;
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3 {
    font-family: "PMingLiU", "Songti TC", "Noto Serif TC", "Times New Roman", serif;
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 0.7rem;
}
.skip-link {
    position: absolute;
    left: 12px;
    top: -80px;
    background: var(--blue);
    color: #fff;
    padding: 8px 14px;
    z-index: 2000;
}
.skip-link:focus { top: 12px; }
.wrap { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.icon { width: 1.05em; height: 1.05em; display: inline-block; vertical-align: -0.12em; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
}
.nav-inner {
    min-height: var(--nav);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.brand {
    color: var(--orange);
    font-family: "PMingLiU", "Songti TC", serif;
    font-size: 1.45rem;
    letter-spacing: 0.08em;
}
.nav-toggle, .nav-close {
    display: none;
    background: none;
    border: 0;
    color: var(--ink);
    padding: 6px;
}
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 8px 12px;
    color: var(--brown);
}
.nav-link:hover { color: var(--blue); }
.nav-phone {
    margin-left: 8px;
    padding: 7px 12px;
    border: 1px solid var(--blue);
    color: var(--blue);
    font-size: 0.95rem;
}
.nav-phone:hover { background: var(--blue); color: #fff; }

.hero {
    padding: 48px 0 36px;
    border-bottom: 1px solid var(--line);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: center;
}
.plate {
    display: inline-block;
    background: var(--blue);
    color: #fff;
    text-align: center;
    min-width: 92px;
    margin-bottom: 18px;
    border: 2px solid #fff;
    outline: 2px solid var(--blue);
    line-height: 1.15;
}
.plate small { display: block; padding: 5px 10px 2px; font-size: 13px; }
.plate b { display: block; padding: 0 10px 6px; font-size: 26px; letter-spacing: 0.04em; }
h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    color: var(--orange);
    letter-spacing: 0.12em;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
h1 .kicker {
    font-family: "Microsoft JhengHei", "PingFang TC", sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--brown);
    letter-spacing: 0.04em;
    margin: 0 0 8px;
}
.lead { color: var(--mute); margin: 0 0 22px; max-width: 36em; }
.sign {
    width: min(280px, 88%);
    margin: 0 auto;
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: 1px solid transparent;
    font-size: 1rem;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: #b85612; }
.btn-line { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }

.meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    padding: 14px 0;
    color: var(--mute);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--line);
}
.meta-bar span { white-space: nowrap; }
.meta-bar b { color: var(--ink); font-weight: 700; }

section { padding: 56px 0; }
.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 28px;
    border-bottom: 2px solid var(--ink);
    padding-bottom: 10px;
}
.section-head h2 { margin: 0; font-size: 1.7rem; letter-spacing: 0.08em; }
.section-head p { margin: 0; color: var(--mute); }

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px 22px;
}
.product-card h3 { font-size: 1.2rem; margin: 12px 0 4px; }
.product-card p { margin: 0; color: var(--mute); font-size: 0.95rem; }
.product-card img,
.product-ph {
    width: 100%;
    height: 240px;
    object-fit: cover;
    background: var(--paper-2);
    border: 1px solid var(--line);
}
.product-ph {
    display: grid;
    place-items: center;
    font-family: "PMingLiU", "Songti TC", serif;
    font-size: 1.8rem;
    color: var(--brown);
    letter-spacing: 0.16em;
}
.product-no {
    display: block;
    margin-top: 10px;
    color: var(--orange);
    font-size: 0.82rem;
}

.size-guide { background: var(--paper-2); }
.table-wrap {
    overflow-x: auto;
    background: var(--white);
    border: 1px solid var(--line);
}
table { width: 100%; border-collapse: collapse; min-width: 520px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: var(--blue); color: #fff; font-weight: 600; }
tbody tr:nth-child(even) { background: #f7f3ea; }
.note {
    margin-top: 18px;
    padding: 14px 16px;
    background: var(--white);
    border-left: 4px solid var(--orange);
}
.note h3 { font-size: 1.05rem; margin-bottom: 6px; }
.note ul { margin: 0; padding-left: 1.2rem; color: var(--mute); }

.about-grid, .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: start;
}
.about-img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    border: 1px solid var(--line);
    background: var(--paper-2);
}
.checklist {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}
.checklist li {
    padding: 7px 0;
    border-bottom: 1px dashed var(--line);
}
.checklist li:last-child { border-bottom: 0; }

.catalog {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 36px;
    margin-top: 8px;
}
.catalog article {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
}
.catalog h3 { font-size: 1.15rem; margin: 0 0 4px; }
.catalog p { margin: 0; color: var(--mute); }

.faq { margin-top: 8px; }
.faq details {
    border-bottom: 1px solid var(--line);
    padding: 12px 0;
}
.faq summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--ink);
}
.faq p { margin: 8px 0 0; color: var(--mute); }

.contact-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.contact-list li {
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
}
.contact-list a:hover { color: var(--blue); }
.contact-list small {
    display: block;
    color: var(--mute);
    font-size: 0.85rem;
}
.map-wrap {
    min-height: 340px;
    height: 100%;
    border: 1px solid var(--line);
    background: var(--paper-2);
}
.map-wrap iframe { width: 100%; height: 100%; min-height: 340px; border: 0; }

footer {
    background: var(--brown);
    color: #eadfce;
    padding: 36px 0 84px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 28px;
    margin-bottom: 22px;
}
footer h3 {
    color: #fff;
    font-size: 1.05rem;
    margin-bottom: 8px;
}
footer p { margin: 2px 0; }
footer a:hover { color: #fff; }
.copy {
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 14px;
    font-size: 0.92rem;
}

.sticky-cta {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--line);
}
.sticky-cta a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 14px 8px;
    font-weight: 700;
}
.sticky-cta .call { background: var(--orange); color: #fff; }
.sticky-cta .map { background: var(--blue); color: #fff; }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

@media (max-width: 860px) {
    .hero-grid, .about-grid, .contact-grid, .product-grid, .footer-grid, .catalog {
        grid-template-columns: 1fr;
    }
    .hero { padding-top: 28px; }
    .sign { width: min(240px, 70%); }
    section { padding: 40px 0; }
    .nav-phone { display: none; }
    .nav-toggle, .nav-close { display: block; }
    .nav-menu {
        position: fixed;
        inset: 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 6px;
        padding: 48px 28px;
        background: var(--paper);
        transform: translateX(100%);
        transition: transform 0.22s ease;
    }
    .nav-menu.is-open { transform: none; }
    .nav-link { font-size: 1.5rem; padding: 10px 0; }
    .nav-close { position: absolute; top: 14px; right: 14px; }
    .sticky-cta { display: grid; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}