html { scroll-behavior: smooth; }

:root {
    --about-serif: 'Noto Serif JP', serif;
    --about-panel-bg: #f7f7f5;
    --about-detail-color: var(--about-detail-color);
}

:root:lang(en) {
    --about-serif: 'Crimson Text', Georgia, serif;
}

:root:lang(zh-Hant) {
    --about-serif: 'Noto Serif TC', 'Noto Serif JP', serif;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --about-panel-bg: #171717;
        --about-detail-color: #c49a6c;
    }
}

:root[data-theme="dark"] {
    --about-panel-bg: #171717;
    --about-detail-color: #c49a6c;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
}

.about-hero {
    position: relative;
    min-height: calc(64vh - 70px);
    margin-top: 70px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    color: #fff;
    background: #111;
}

.about-hero picture,
.about-hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.about-hero-bg {
    object-fit: cover;
    filter: brightness(0.58) contrast(1.04) saturate(0.92);
}

.about-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.48) 44%, rgba(0,0,0,0.12) 100%),
        linear-gradient(0deg, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0) 58%);
    z-index: 1;
}

.about-hero-inner {
    position: relative;
    z-index: 2;
    width: min(1120px, calc(100% - 4rem));
    margin: 0 auto;
    padding: 3.5rem 0 3.25rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 3rem;
    align-items: end;
}

.lang-switcher {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.7rem;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    border: 1px solid rgba(255,255,255,0.34);
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
    font-size: 0.72rem;
    font-family: var(--secondary-font);
    color: rgba(255,255,255,0.86);
    text-decoration: none;
    letter-spacing: 0;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.lang-btn:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.75);
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    font-family: var(--secondary-font);
    font-size: 0.72rem;
    letter-spacing: 0;
    text-transform: uppercase;
    color: rgba(255,255,255,0.72);
    margin-bottom: 1rem;
}

.hero-label::before {
    content: '';
    width: 42px;
    height: 1px;
    background: #c49a6c;
}

.hero-title {
    max-width: 920px;
    font-family: var(--about-serif);
    font-size: 3.5rem;
    line-height: 1.28;
    text-wrap: balance;
    font-weight: 400;
    letter-spacing: 0;
    margin: 0 0 1.6rem;
    color: #fff;
}

.hero-title span {
    display: block;
}

.hero-title .hero-name {
    font-family: var(--secondary-font);
    font-size: 1.05rem;
    letter-spacing: 0;
    text-transform: uppercase;
    color: rgba(255,255,255,0.76);
    margin-bottom: 0.9rem;
}

.hero-subtitle {
    max-width: 620px;
    font-family: var(--about-serif);
    font-size: 1.13rem;
    line-height: 2.1;
    letter-spacing: 0;
    color: rgba(255,255,255,0.84);
    margin: 0;
}

.hero-meta {
    display: grid;
    gap: 0.75rem;
    color: rgba(255,255,255,0.8);
    font-family: var(--secondary-font);
    font-size: 0.76rem;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero-meta span {
    display: block;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.28);
}

.about-statement {
    padding: 4rem 2rem 6rem;
    background: var(--bg-color);
}

.statement-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1fr);
    gap: 4rem;
    align-items: center;
}

.statement-portrait {
    margin: 0;
}

.statement-portrait img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: 0 18px 40px rgba(0,0,0,0.12);
}

.statement-portrait figcaption {
    margin-top: 0.8rem;
    font-family: var(--secondary-font);
    font-size: 0.72rem;
    letter-spacing: 0;
    color: var(--text-lighter);
    text-transform: uppercase;
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-family: var(--secondary-font);
    font-size: 0.72rem;
    letter-spacing: 0;
    text-transform: uppercase;
    color: var(--about-detail-color);
    margin-bottom: 1rem;
}

.section-kicker::before {
    content: '';
    width: 34px;
    height: 1px;
    background: var(--about-detail-color);
}

.statement-title,
.section-title {
    font-family: var(--about-serif);
    font-size: 2.7rem;
    line-height: 1.55;
    font-weight: 400;
    letter-spacing: 0;
    color: var(--text-color);
    margin: 0 0 1.5rem;
}

.about-prose {
    font-family: var(--about-serif);
    color: var(--text-light);
    font-size: 0.96rem;
    line-height: 2.18;
    letter-spacing: 0;
}

.about-prose p {
    margin: 0 0 1.4rem;
}

.about-prose a {
    color: var(--text-color);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: #c49a6c;
}

.section-heading-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
    margin-bottom: 2rem;
}

.section-heading-row .about-prose {
    max-width: 520px;
    font-size: 0.86rem;
    line-height: 1.95;
}

.about-timeline {
    padding: 5.5rem 2rem 6rem;
    background: var(--about-panel-bg);
    border-top: 1px solid var(--border-color);
}

.about-timeline-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.timeline-grid {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 3rem;
    margin-top: 2.6rem;
}

.timeline-nav {
    position: sticky;
    top: 6rem;
    align-self: start;
    border-left: 1px solid var(--border-color);
}

.timeline-nav-btn {
    width: 100%;
    min-height: 44px;
    text-align: left;
    padding: 0.75rem 1rem;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    color: var(--text-lighter);
    cursor: pointer;
    font-family: var(--secondary-font);
    font-size: 0.78rem;
    letter-spacing: 0;
    transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.timeline-nav-btn:hover,
.timeline-nav-btn.active {
    color: var(--text-color);
    border-left-color: var(--about-detail-color);
    background: var(--white);
}

.timeline-nav-btn span {
    display: inline-block;
    width: 3.4rem;
    color: var(--about-detail-color);
    font-weight: 600;
}

.timeline-content {
    display: grid;
    gap: 1.2rem;
}

.timeline-item {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
}

.timeline-item-inner {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 1.2rem;
    align-items: start;
}

.timeline-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--secondary-font);
    font-size: 0.74rem;
    letter-spacing: 0;
    color: var(--about-detail-color);
    background: var(--bg-color);
}

.timeline-line {
    display: none;
}

.timeline-body .year {
    display: block;
    margin-bottom: 0.3rem;
    font-family: var(--secondary-font);
    font-size: 0.74rem;
    letter-spacing: 0;
    color: var(--about-detail-color);
    text-transform: uppercase;
}

.timeline-body h3 {
    margin: 0 0 0.7rem;
    font-family: var(--about-serif);
    font-size: 1.24rem;
    font-weight: 400;
    letter-spacing: 0;
    color: var(--text-color);
}

.timeline-body p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.9;
    font-family: var(--about-serif);
    font-size: 0.88rem;
    letter-spacing: 0;
}

.timeline-figure {
    margin: 1.1rem 0 0;
    overflow: hidden;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--white);
}

.timeline-figure img {
    display: block;
    width: 100%;
    height: auto;
}

.timeline-figure figcaption {
    padding: 0.65rem 0.9rem;
    font-size: 0.72rem;
    color: var(--text-lighter);
    font-family: var(--secondary-font);
    text-align: center;
    letter-spacing: 0;
}

.timeline-link {
    display: inline-block;
    margin-top: 0.9rem;
    font-size: 0.78rem;
    font-family: var(--secondary-font);
    color: var(--about-detail-color);
    text-decoration: none;
    letter-spacing: 0;
}

.about-footer {
    background: #1d1d1d;
    color: #fff;
    padding: 4rem 2rem 2rem;
}

.about-footer-grid {
    max-width: 1100px;
    margin: 0 auto 2.5rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
}

.about-footer h4 {
    font-family: var(--secondary-font);
    letter-spacing: 0;
    font-size: 1rem;
    font-weight: 500;
    margin: 0 0 1rem;
}

.about-footer-bio {
    max-width: 420px;
    font-family: var(--about-serif);
    font-size: 0.86rem;
    line-height: 2;
    color: #aaa;
    margin: 0;
}

.about-footer h5 {
    font-family: var(--secondary-font);
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    color: #777;
    margin: 0 0 1rem;
    letter-spacing: 0;
}

.about-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-footer li {
    margin-bottom: 0.55rem;
}

.about-footer a {
    color: #aaa;
    text-decoration: none;
    font-size: 0.82rem;
    font-family: var(--secondary-font);
    letter-spacing: 0;
}

.about-footer a:hover {
    color: #c49a6c;
}

.about-footer-copy {
    max-width: 1100px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid #333;
    text-align: center;
    font-size: 0.74rem;
    color: #666;
    font-family: var(--secondary-font);
    letter-spacing: 0;
}

@media (max-width: 900px) {
    .hero-title {
        font-size: 2.75rem;
    }

    .statement-title,
    .section-title {
        font-size: 2.25rem;
    }

    .about-hero-inner {
        grid-template-columns: 1fr;
        width: min(100% - 3rem, 760px);
    }

    .hero-meta {
        grid-template-columns: repeat(3, 1fr);
    }

    .statement-inner,
    .section-heading-row,
    .timeline-grid,
    .about-footer-grid {
        grid-template-columns: 1fr;
    }

    .timeline-nav {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.05rem;
    }

    .hero-title .hero-name {
        font-size: 0.9rem;
    }

    .hero-subtitle {
        font-size: 0.98rem;
    }

    .statement-title,
    .section-title {
        font-size: 1.65rem;
    }

    .about-hero {
        min-height: calc(66vh - 70px);
    }

    .about-hero-inner {
        width: calc(100% - 2rem);
        padding: 3rem 0 2.5rem;
    }

    .hero-meta {
        grid-template-columns: 1fr;
    }

    .about-statement,
    .about-timeline {
        padding-left: 1.3rem;
        padding-right: 1.3rem;
    }

    .statement-inner {
        gap: 2.2rem;
    }

    .timeline-nav {
        grid-template-columns: 1fr;
    }

    .timeline-item-inner {
        grid-template-columns: 1fr;
    }
}

/* ── Connect（SNS） ── */
.about-connect {
    padding: 4.25rem 2rem;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

.connect-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 14px;
}

.connect-card {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 1.15rem 1.2rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--white);
    text-decoration: none;
    position: relative;
    transition: transform .25s ease, box-shadow .25s ease;
}

.connect-card::after {
    content: "↗";
    position: absolute;
    top: 1rem;
    right: 1.1rem;
    font-family: var(--secondary-font);
    font-size: 0.85rem;
    color: var(--text-lighter);
    transition: color .25s ease, transform .25s ease;
}

.connect-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 26px rgba(0,0,0,0.08);
}

.connect-card:hover::after {
    color: var(--accent-color);
    transform: translate(2px, -2px);
}

.connect-service {
    font-family: var(--secondary-font);
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--text-color);
}

.connect-handle {
    font-family: var(--secondary-font);
    font-size: 0.8rem;
    color: var(--accent-color);
}

.connect-desc {
    font-family: var(--primary-font);
    font-size: 0.78rem;
    color: var(--text-light);
    line-height: 1.7;
}

:lang(en) .about-prose,
:lang(en) .timeline-body p {
    font-size: 1.1rem;
    line-height: 1.8;
}

:lang(en) .about-footer-bio {
    font-size: 1rem;
}

:lang(zh-Hant) .connect-desc {
    font-family: var(--about-serif);
}

.about-prose,
.timeline-body,
.connect-card,
.about-footer {
    overflow-wrap: anywhere;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    .connect-card,
    .connect-card::after {
        transition: none;
        transform: none;
    }
}