/* ==========================================================================
   about.html — 關於我們
   版式：不對稱頁首 + 檔案清單 + 價值方格 + 縱向年表 + 座標拼貼
   ========================================================================== */

/* ---------- 01 頁首 ---------- */
.ab-hero {
    position: relative;
    padding: clamp(44px, 5.5vw, 76px) 0 0;
    background:
        radial-gradient(ellipse 60% 70% at 85% 0%, rgba(180, 69, 46, 0.07), transparent 70%),
        linear-gradient(180deg, var(--paper-raised) 0%, var(--paper) 78%);
}
.ab-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.68fr);
    gap: 56px 64px;
    align-items: start;
}
.ab-company {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: var(--muted);
    letter-spacing: 0.04em;
}
.ab-company::before {
    content: "";
    width: 18px;
    height: 2px;
    background: var(--seal);
}
.ab-hero h1 {
    margin: 22px 0 24px;
    font-size: clamp(38px, 5.2vw, 64px);
    line-height: 1.14;
    letter-spacing: 0.005em;
}
.ab-hero h1 span { display: block; }
.ab-lead {
    max-width: 50ch;
    font-family: var(--serif);
    font-size: clamp(16.5px, 1.6vw, 19px);
    font-weight: 400;
    line-height: 1.9;
    color: var(--ink-2);
}

.ab-reg {
    position: relative;
    padding: 28px 28px 24px;
    background: var(--pine);
    color: var(--on-dark);
    border-radius: var(--radius);
    box-shadow: 18px 18px 0 -1px var(--jade-wash);
}
.ab-reg-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line-dark);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--on-dark-muted);
}
.ab-reg-seal {
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(239, 243, 234, 0.45);
    border-radius: 2px;
    font-family: var(--serif);
    font-size: 14px;
    color: var(--on-dark);
}
.ab-reg-list > div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 15px 0;
    border-bottom: 1px solid var(--line-dark);
}
.ab-reg-list dt { font-size: 12.5px; color: var(--on-dark-muted); }
.ab-reg-list dd {
    font-family: var(--serif);
    font-size: 17px;
    color: var(--on-dark);
    text-align: right;
}
.ab-reg-foot {
    margin-top: 18px;
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--on-dark-muted);
}

.ab-facts {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: clamp(40px, 5vw, 60px);
    border-top: 1px solid var(--line);
}
.ab-facts > div {
    padding: 24px 20px 28px 0;
    border-right: 1px solid var(--line);
}
.ab-facts > div:not(:first-child) { padding-left: 24px; }
.ab-facts > div:last-child { border-right: none; }
.ab-facts dt { font-size: 12.5px; color: var(--muted); letter-spacing: 0.04em; }
.ab-facts dd {
    margin-top: 6px;
    font-family: var(--serif);
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 500;
    line-height: 1.1;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
}

/* ---------- 02 公司概述 ---------- */
.ab-overview {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.8fr);
    gap: 56px 64px;
    align-items: start;
}
.ab-story p {
    font-size: 16px;
    line-height: 1.95;
    color: var(--ink-2);
    max-width: 60ch;
}
.ab-story p + p { margin-top: 20px; }
.ab-story p:first-child {
    font-family: var(--serif);
    font-size: clamp(18px, 1.9vw, 21px);
    line-height: 1.85;
    color: var(--ink);
}

.ab-dossier {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px 26px 22px;
}
.ab-dossier-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    font-family: var(--serif);
    font-size: 16px;
    color: var(--ink);
    padding-bottom: 14px;
    border-bottom: 2px solid var(--ink);
}
.ab-dossier-head span:last-child {
    font-family: var(--sans);
    font-size: 12px;
    color: var(--seal);
    letter-spacing: 0.06em;
}
.ab-dossier-list > div {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    padding: 11px 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: 13.5px;
    line-height: 1.65;
}
.ab-dossier-list dt { color: var(--muted); }
.ab-dossier-list dd { color: var(--ink); text-align: right; }
.ab-dossier-note {
    margin-top: 14px;
    font-size: 12px;
    line-height: 1.75;
    color: var(--muted-soft);
}

/* ---------- 03 價值觀 ---------- */
.ab-values {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.ab-value {
    position: relative;
    padding: 34px 34px 36px;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: border-color var(--t-fast), background var(--t-fast);
}
.ab-value::before {
    content: "";
    position: absolute;
    top: 40px;
    left: 0;
    width: 16px;
    height: 3px;
    background: var(--seal);
}
.ab-value:hover { background: var(--paper); border-color: var(--ink-2); }
.ab-value h3 {
    font-size: clamp(22px, 2.3vw, 27px);
    margin-bottom: 14px;
}
.ab-value p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--ink-2);
    max-width: 44ch;
}

/* ---------- 04 年表 ---------- */
.ab-timeline {
    position: relative;
    margin-left: 4px;
    border-left: 1px solid var(--line);
}
.ab-timeline li {
    position: relative;
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 32px;
    padding: 0 0 38px 36px;
}
.ab-timeline li:last-child { padding-bottom: 4px; }
.ab-timeline li::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 9px;
    width: 9px;
    height: 9px;
    background: var(--paper-deep);
    border: 1px solid var(--seal);
    transform: rotate(45deg);
}
.ab-time {
    font-family: var(--serif);
    font-size: 19px;
    color: var(--seal);
    letter-spacing: 0.04em;
    font-variant-numeric: tabular-nums;
}
.ab-step h3 { font-size: clamp(21px, 2.2vw, 25px); margin-bottom: 10px; }
.ab-step p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--ink-2);
    max-width: 62ch;
}

/* ---------- 05 全球布局 ---------- */
.ab-map {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 16px;
}
.ab-place {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 28px 30px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}
.ab-code {
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--seal);
}
.ab-place h3 { font-size: clamp(21px, 2.1vw, 25px); }
.ab-place p {
    font-size: 14.5px;
    line-height: 1.9;
    color: var(--ink-2);
}
.ab-place-note {
    margin-top: auto;
    padding-top: 10px;
    font-size: 12px;
    letter-spacing: 0.05em;
    color: var(--muted);
    border-top: 1px solid var(--line);
}
.ab-place .tlink { margin-top: auto; align-self: flex-start; }

.ab-place.is-lead {
    grid-row: span 3;
    justify-content: flex-end;
    gap: 16px;
    padding: 38px 38px 34px;
    background: var(--pine);
    border-color: var(--pine);
    color: var(--on-dark);
}
.ab-place.is-lead .ab-code { color: var(--jade-wash); }
.ab-place.is-lead h3 {
    color: var(--on-dark);
    font-size: clamp(28px, 3vw, 38px);
    margin-bottom: 6px;
}
.ab-place.is-lead p {
    color: var(--on-dark-muted);
    font-size: 15px;
    max-width: 34ch;
}
.ab-place.is-lead .ab-place-note {
    color: var(--on-dark-muted);
    border-top-color: var(--line-dark);
}

/* ---------- 06 聯繫方式 ---------- */
.ab-contacts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.ab-contact {
    padding: 28px 30px 30px;
    background: var(--paper-raised);
    border-top: 2px solid var(--ink);
}
.ab-contact-label {
    font-size: 12.5px;
    letter-spacing: 0.08em;
    color: var(--muted);
}
.ab-contact-value {
    display: block;
    margin: 8px 0 12px;
    font-family: var(--serif);
    font-size: clamp(19px, 2.3vw, 25px);
    line-height: 1.4;
    color: var(--ink);
    overflow-wrap: anywhere;
    transition: color var(--t-fast);
}
a.ab-contact-value:hover { color: var(--seal); }
.ab-contact p {
    font-size: 14px;
    line-height: 1.85;
    color: var(--muted);
    max-width: 38ch;
}

/* ---------- 響應式 ---------- */
@media (max-width: 1024px) {
    .ab-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .ab-reg { box-shadow: 10px 10px 0 -1px var(--jade-wash); }
    .ab-overview { grid-template-columns: 1fr; gap: 40px; }
    .ab-timeline li { grid-template-columns: 108px minmax(0, 1fr); gap: 24px; }
    .ab-map { grid-template-columns: 1fr; }
    .ab-place.is-lead { grid-row: auto; }
}

@media (max-width: 768px) {
    .ab-hero { padding-top: 36px; }
    .ab-hero h1 { font-size: clamp(33px, 9vw, 44px); }
    .ab-reg { padding: 24px 22px 20px; box-shadow: 6px 6px 0 -1px var(--jade-wash); }
    .ab-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ab-facts > div { border-bottom: 1px solid var(--line); }
    .ab-facts > div:nth-child(2n) { border-right: none; }
    .ab-facts > div:nth-child(n + 3) { border-bottom: none; }
    .ab-facts > div:not(:first-child) { padding-left: 0; }
    .ab-facts > div:nth-child(even) { padding-left: 20px; }
    .ab-values { grid-template-columns: 1fr; }
    .ab-value { padding: 28px 24px 30px; }
    .ab-timeline { margin-left: 0; }
    .ab-timeline li {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 0 0 30px 26px;
    }
    .ab-timeline li::before { top: 7px; }
    .ab-place { padding: 24px 22px; }
    .ab-place.is-lead { padding: 28px 24px 26px; }
    .ab-contacts { grid-template-columns: 1fr; }
    .ab-contact { padding: 24px 22px 26px; }
}