/* about.html専用スタイル - モダンでスタイリッシュなレイアウト */

:root {
    --about-bg: #f2f6fa;
    --about-surface: #ffffff;
    --about-text: #052235;
    --about-muted: #5d6c7a;
    --about-accent: #53CFFE;
    --about-accent-dark: #1B8DE6;
    --about-border: rgba(4, 40, 60, 0.12);
    --about-gradient: linear-gradient(130deg, #1B8DE6 0%, #53CFFE 45%, #ABE1FA 100%);
}

.about-hero .page-title {
    font-size: clamp(28px, 3vw, 36px);
    line-height: 1.4;
    letter-spacing: 0.02em;
    color: var(--about-text);
    font-weight: 700;
    margin: 28px 0 0;
}

.about-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.04em;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.about-button--primary {
    background: var(--about-gradient);
    color: #fff;
    box-shadow: 0 15px 30px rgba(15, 94, 170, 0.25);
}

.about-button--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(15, 94, 170, 0.35);
}

.about-button--ghost {
    background: rgba(255, 255, 255, 0.45);
    color: #0F5EAA;
    border: 2px solid rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.about-button--ghost:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.6);
    border-color: rgba(255, 255, 255, 1);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

/* Hero */
.about-hero {
    position: relative;
    padding: 80px 0 120px;
    background: linear-gradient(165deg, #ffffff 0%, #ecf3f8 35%, #e3eff7 100%);
}

.about-hero__inner {
    display: grid;
    gap: 48px;
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
}

.about-hero__copy {
    max-width: 620px;
}

.about-hero__lead {
    margin: 28px 0 32px;
    font-size: 17px;
    line-height: 1.9;
    color: var(--about-muted);
}

.about-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.about-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.meta-item {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(4, 40, 60, 0.12);
    border-radius: 12px;
    padding: 16px 20px;
    min-width: 160px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.meta-item span {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(5, 34, 53, 0.6);
}

.meta-item strong {
    font-size: 17px;
    color: var(--about-text);
    font-weight: 700;
}

.about-hero__visual {
    border-radius: 28px;
    min-height: 420px;
    background-size: cover;
    background-position: center;
    position: relative;
    box-shadow: 0 35px 65px rgba(2, 26, 47, 0.28);
}

.about-hero__visual::after {
    content: '';
    position: absolute;
    inset: 20px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 24px;
    pointer-events: none;
}

/* FAQ */
.about-faq {
    padding: 120px 0;
    background: #ffffff;
}

.faq-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.faq-header h2 {
    font-size: clamp(30px, 3vw, 36px);
    margin: 24px 0 16px;
    color: var(--about-text);
}

.faq-header p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--about-muted);
}

/* 縦積みレイアウト（Baigieスタイル） */
.faq-section {
    max-width: 900px;
    margin: 0 auto 48px;
}

.faq-question {
    background: hsla(0, 0%, 96%, 0.5);
    border-radius: 12px;
    padding: 24px 32px;
    margin-bottom: 20px;
}

.faq-question h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--about-text);
    letter-spacing: 0.02em;
    margin: 0;
}

.faq-answer {
    padding: 0 16px;
}

.faq-answer p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--about-muted);
    margin: 10px 0;
}

.faq-answer table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
}

.faq-answer table th {
    background: hsla(0, 0%, 96%, 0.5);
    border: 1px solid #f2f2f2;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--about-text);
    min-width: 100px;
    max-width: 240px;
}

.faq-answer table td {
    border: 1px solid #f2f2f2;
    padding: 12px;
    color: var(--about-muted);
}

.faq-answer ul,
.faq-answer ol {
    margin: 10px 0;
    padding-left: 24px;
}

.faq-answer li {
    font-size: 15px;
    line-height: 1.9;
    color: var(--about-muted);
    margin: 6px 0;
}

/* Overview */
.about-overview {
    padding: 120px 0;
    background: var(--about-bg);
}

.about-overview h2 {
    font-size: clamp(28px, 3vw, 36px);
    margin: 24px 0 48px;
    color: var(--about-text);
}

.about-overview__grid {
    display: grid;
    gap: 48px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
}

.overview-copy p {
    font-size: 16px;
    line-height: 1.9;
    color: var(--about-muted);
    margin-bottom: 18px;
    text-align: left;
}

.overview-highlights {
    display: grid;
    gap: 24px;
}

.overview-card {
    background: var(--about-surface);
    border-radius: 16px;
    padding: 26px 28px 28px;
    box-shadow: 0 18px 40px rgba(2, 26, 47, 0.08);
    border: 1px solid var(--about-border);
    position: relative;
}

.overview-card__index {
    position: absolute;
    top: 18px;
    right: 24px;
    font-size: 14px;
    letter-spacing: 0.2em;
    color: rgba(5, 34, 53, 0.25);
}

.overview-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--about-text);
}

.overview-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--about-muted);
}

/* Numbers */
.about-numbers {
    padding: 120px 0;
    background: linear-gradient(135deg, #1B8DE6 0%, #53CFFE 50%, #ABE1FA 100%);
    color: #fff;
}

.about-numbers .container {
    text-align: center;
}

.about-numbers h2 {
    font-size: clamp(30px, 3vw, 38px);
    margin: 24px 0 48px;
}

.number-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.number-card {
    background: rgba(245, 240, 230, 0.95);
    border-radius: 18px;
    padding: 32px 28px;
    border: 1px solid rgba(200, 190, 180, 0.4);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.number-card::after {
    content: '';
    position: absolute;
    inset: -20% -40% auto auto;
    height: 140px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.45), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.number-card:hover {
    transform: translateY(-6px);
    border-color: rgba(200, 190, 180, 0.6);
    background: rgba(250, 245, 235, 1);
}

.number-card:hover::after {
    opacity: 1;
}

.number-card__value {
    font-size: clamp(44px, 4vw, 60px);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ocean-deep);
}

.number-card__value span {
    position: relative;
}

.number-card__value .unit {
    font-size: 20px;
    margin-left: 6px;
}

.number-card__label {
    margin-top: 20px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--about-text);
}

.number-card__note {
    margin-top: 12px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--about-muted);
}

/* Business */
.about-business {
    padding: 130px 0;
    background: #fbfdff;
}

.about-business .section-heading {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.about-business .section-heading h2 {
    color: var(--about-text);
}

.about-business .section-heading p {
    color: var(--about-muted);
    line-height: 1.9;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.business-card {
    position: relative;
    min-height: 320px;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(2, 26, 47, 0.7);
}

.business-card__overlay {
    position: absolute;
    inset: 0;
    background: var(--card-bg, none);
    background-size: cover;
    background-position: center;
    filter: saturate(1.1) brightness(0.85);
    transform: scale(1.03);
}

.business-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(1, 16, 28, 0.65) 0%, rgba(1, 16, 28, 0.9) 100%);
}

.business-card__content {
    position: relative;
    z-index: 1;
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: flex-end;
    color: #fff;
}

.business-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
}

.business-card p {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.85;
}

/* Culture */
.about-culture {
    padding: 130px 0;
    background: linear-gradient(110deg, #1B8DE6 0%, #53CFFE 45%, #ABE1FA 100%);
    color: #fff;
}

.culture-header {
    max-width: 740px;
    margin: 0 auto 56px;
    text-align: center;
}

.culture-header h2 {
    font-size: clamp(30px, 3vw, 38px);
    margin: 24px 0 20px;
}

.culture-header p {
    font-size: 16px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.8);
}

.culture-content {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 36px;
    align-items: stretch;
}

.culture-list {
    display: grid;
    gap: 24px;
}

.culture-card {
    background: rgba(245, 240, 230, 0.95);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid rgba(200, 190, 180, 0.4);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.culture-card::after {
    content: '';
    position: absolute;
    inset: -20% -40% auto auto;
    height: 140px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.45), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.culture-card:hover {
    transform: translateY(-6px);
    border-color: rgba(200, 190, 180, 0.6);
    background: rgba(250, 245, 235, 1);
}

.culture-card:hover::after {
    opacity: 1;
}

.culture-card h3 {
    font-size: 20px;
    margin-bottom: 14px;
    color: var(--ocean-deep);
}

.culture-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--about-muted);
}

.culture-aside {
    display: grid;
    gap: 24px;
}

.culture-aside__image {
    border-radius: 24px;
    min-height: 260px;
    background-size: cover;
    background-position: center;
    position: relative;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
}

.culture-aside__image::after {
    content: '';
    position: absolute;
    inset: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
}

.culture-metrics {
    display: grid;
    gap: 14px;
    background: rgba(245, 240, 230, 0.95);
    border: 1px solid rgba(200, 190, 180, 0.4);
    border-radius: 18px;
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.culture-metrics::after {
    content: '';
    position: absolute;
    inset: -20% -40% auto auto;
    height: 140px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.45), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.culture-metrics:hover {
    transform: translateY(-6px);
    border-color: rgba(200, 190, 180, 0.6);
    background: rgba(250, 245, 235, 1);
}

.culture-metrics:hover::after {
    opacity: 1;
}

.culture-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    color: var(--about-muted);
    position: relative;
    z-index: 1;
}

.culture-metric dt {
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--about-text);
}

.culture-metric dd {
    color: var(--ocean-deep);
    font-weight: 600;
}

/* Flow */
.about-flow {
    padding: 120px 0;
    background: #f5f9fc;
}

.about-flow .container {
    text-align: center;
}

.about-flow h2 {
    color: var(--about-text);
    margin-bottom: 56px;
    font-size: clamp(30px, 3vw, 36px);
}

.flow-timeline {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.flow-step {
    position: relative;
    padding: 36px 32px;
    border-radius: 18px;
    background: var(--about-surface);
    border: 1px solid var(--about-border);
    box-shadow: 0 20px 45px rgba(2, 26, 47, 0.08);
}

.flow-step__index {
    display: inline-flex;
    align-items: center;
    letter-spacing: 0.24em;
    font-size: 12px;
    padding: 8px 18px;
    border-radius: 999px;
    margin-bottom: 18px;
    background: rgba(3, 36, 54, 0.08);
    color: var(--about-accent-dark);
}

.flow-step h3 {
    font-size: 20px;
    margin-bottom: 14px;
    color: var(--about-text);
}

.flow-step p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--about-muted);
}

/* Support */
.about-support {
    padding: 130px 0;
    background: #ffffff;
}

.about-support .section-heading {
    max-width: 760px;
    margin: 0 auto 56px;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.support-card {
    padding: 32px 28px;
    border-radius: 18px;
    background: var(--about-bg);
    border: 1px solid var(--about-border);
    box-shadow: 0 14px 30px rgba(2, 26, 47, 0.08);
}

.support-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--about-text);
}

.support-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--about-muted);
}

/* Navigation */
.about-navigation {
    padding: 120px 0;
    background: linear-gradient(135deg, rgba(2, 26, 47, 0.04) 0%, rgba(2, 26, 47, 0.12) 100%);
}

.about-navigation__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
    align-items: center;
    background: #ffffff;
    border-radius: 28px;
    padding: 48px;
    border: 1px solid var(--about-border);
    box-shadow: 0 24px 60px rgba(2, 26, 47, 0.1);
}

.about-navigation__copy h2 {
    font-size: 30px;
    color: var(--about-text);
    margin-top: 18px;
    margin-bottom: 16px;
}

.about-navigation__copy p {
    color: var(--about-muted);
    line-height: 1.8;
}

.about-navigation__links {
    display: grid;
    gap: 18px;
}

.about-navigation__link {
    display: flex;
    flex-direction: column;
    padding: 22px 26px;
    border-radius: 16px;
    border: 1px solid var(--about-border);
    background: var(--about-bg);
    text-decoration: none;
    color: var(--about-text);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.about-navigation__link span {
    font-size: 12px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: rgba(5, 34, 53, 0.5);
    margin-bottom: 10px;
}

.about-navigation__link strong {
    font-size: 18px;
    font-weight: 600;
}

.about-navigation__link:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 168, 204, 0.5);
    box-shadow: 0 20px 35px rgba(2, 26, 47, 0.12);
}

/* Responsive */
@media (max-width: 1024px) {
    .about-hero__inner,
    .about-overview__grid,
    .culture-content,
    .about-navigation__inner {
        grid-template-columns: 1fr;
    }

    .about-hero__visual {
        min-height: 360px;
    }

    .faq-grid,
    .number-grid,
    .business-grid,
    .flow-timeline,
    .support-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .about-hero {
        padding: 60px 0 80px;
    }

    .about-hero__actions {
        justify-content: flex-start;
    }

    .meta-item {
        min-width: 140px;
    }

    .about-overview,
    .about-numbers,
    .about-business,
    .about-culture,
    .about-flow,
    .about-support,
    .about-navigation {
        padding: 80px 0;
    }

    .about-faq {
        padding: 80px 0;
    }

    .faq-section {
        margin-bottom: 32px;
    }

    .faq-question {
        padding: 20px 24px;
        margin-bottom: 16px;
    }

    .faq-question h3 {
        font-size: 18px;
    }

    .faq-answer {
        padding: 0 8px;
    }

    .faq-answer table th,
    .faq-answer table td {
        padding: 10px;
        font-size: 14px;
    }

    .number-grid,
    .business-grid,
    .flow-timeline,
    .support-grid {
        grid-template-columns: 1fr;
    }

    .about-navigation__inner {
        padding: 32px;
    }
}

@media (max-width: 520px) {
    .about-hero__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .meta-item {
        width: 100%;
    }

    .about-navigation__links {
        gap: 12px;
    }
}

/* interview-navigation スタイル（interview.htmlと統一） */
.interview-navigation {
    padding: 120px 0;
    background: var(--about-bg);
}

.interview-navigation .section-heading {
    max-width: 720px;
    margin: 0 auto 56px;
}

.interview-navigation .section-heading h2 {
    color: var(--about-text);
}

.interview-navigation .navigation-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

/* Navigation cards - 明るい背景用のスタイル上書き */
.interview-navigation .navigation-card {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(4, 40, 60, 0.12);
    color: var(--about-text);
}

.interview-navigation .navigation-card__label {
    color: rgba(4, 40, 60, 0.7);
}

.interview-navigation .navigation-card h3 {
    color: var(--about-text);
}

.interview-navigation .navigation-card p {
    color: var(--about-muted);
}

.interview-navigation .navigation-card:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--about-accent);
}

/* Responsive for interview-navigation */
@media (max-width: 1024px) {
    .interview-navigation .navigation-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .interview-navigation {
        padding: 80px 0;
    }

    .interview-navigation .navigation-grid {
        grid-template-columns: 1fr;
    }
}