/* 关于我们页 — 精致 AI 布局 */

.about-section {
    padding: 3rem 0 4.5rem;
    position: relative;
    z-index: 1;
}

.about-cta-wrap {
    padding: 0 0 3rem;
    position: relative;
    z-index: 1;
}

.about-layout {
    display: grid;
    grid-template-columns: 1fr minmax(280px, 340px);
    gap: 1.75rem;
    align-items: start;
}

/* ─── 左侧主内容 ─── */
.about-intro {
    margin-bottom: 2rem;
}

.about-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #0f766e;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.25);
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

.about-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #22d3ee;
    box-shadow: 0 0 8px #22d3ee;
}

.about-intro h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #0b1224;
    margin-bottom: 0.85rem;
    line-height: 1.3;
}

.about-lead {
    font-size: 1.0625rem;
    color: #5c6578;
    line-height: 1.85;
    max-width: 38rem;
}

.about-lead strong {
    color: #0f766e;
    font-weight: 600;
}

.about-cap-heading {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.about-cap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.about-cap-card {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    padding: 1.25rem 1.15rem;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.05);
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    position: relative;
    overflow: hidden;
}

.about-cap-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #14b8a6, #6366f1);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.about-cap-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 211, 238, 0.35);
    box-shadow: 0 16px 40px rgba(13, 148, 136, 0.1);
}

.about-cap-card:hover::before {
    opacity: 1;
}

.about-cap-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #0f766e;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(129, 140, 248, 0.12));
    border: 1px solid rgba(34, 211, 238, 0.22);
    margin-bottom: 0.75rem;
}

.about-cap-card h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #0b1224;
    margin-bottom: 0.35rem;
}

.about-cap-card p {
    font-size: 0.8125rem;
    color: #64748b;
    line-height: 1.65;
    margin: 0;
}

/* ─── 右侧联系卡 ─── */
.about-section .contact-card {
    position: sticky;
    top: 5.5rem;
    padding: 1.75rem 1.5rem;
    border-radius: 20px;
    background: linear-gradient(155deg, #070b14 0%, #0f172a 42%, #132035 100%);
    border: 1px solid rgba(34, 211, 238, 0.28);
    box-shadow:
        0 24px 64px rgba(7, 11, 20, 0.35),
        0 0 48px rgba(34, 211, 238, 0.08);
    overflow: hidden;
}

.about-section .contact-card::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -25%;
    width: 70%;
    height: 80%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 65%);
    pointer-events: none;
}

.about-section .contact-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
    pointer-events: none;
}

.contact-card-inner {
    position: relative;
    z-index: 1;
}

.contact-card-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #22d3ee;
    margin-bottom: 0.5rem;
}

.about-section .contact-card h4 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 0.45rem;
    letter-spacing: -0.02em;
}

.contact-card-desc {
    font-size: 0.875rem;
    color: rgba(226, 232, 240, 0.75);
    line-height: 1.65;
    margin-bottom: 1.5rem;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 1.5rem;
}

.about-section .contact-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(34, 211, 238, 0.12);
    border-radius: 14px;
    transition: border-color 0.3s ease, background 0.3s ease;
    margin: 0;
}

.about-section .contact-item:hover {
    background: rgba(34, 211, 238, 0.08);
    border-color: rgba(34, 211, 238, 0.28);
}

.about-section .contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(34, 211, 238, 0.12);
    border: 1px solid rgba(34, 211, 238, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0;
}

.about-section .contact-icon svg {
    width: 18px;
    height: 18px;
    stroke: #22d3ee;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.contact-item-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.contact-item-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(148, 163, 184, 0.9);
}

.contact-item-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: #f1f5f9;
    word-break: break-all;
}

.contact-cta {
    display: block;
    width: 100%;
    padding: 0.9rem 1.25rem;
    text-align: center;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #070b14;
    text-decoration: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #22d3ee 0%, #14b8a6 50%, #6366f1 100%);
    box-shadow: 0 8px 24px rgba(34, 211, 238, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(34, 211, 238, 0.35);
    color: #070b14;
}

.contact-note {
    margin-top: 0.85rem;
    font-size: 0.75rem;
    color: rgba(148, 163, 184, 0.8);
    text-align: center;
    line-height: 1.5;
}

/* ─── 发展历程 ─── */
.history-section {
    padding: 4.5rem 0;
    position: relative;
    z-index: 1;
}

.history-section .section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: #f8fafc;
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 700;
}

.timeline-card {
    max-width: 720px;
    margin: 0 auto;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(34, 211, 238, 0.2);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.timeline-header {
    background: linear-gradient(135deg, rgba(15, 118, 110, 0.95) 0%, rgba(79, 70, 229, 0.9) 100%);
    padding: 2.25rem 2rem;
    color: #f8fafc;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.timeline-year-badge {
    width: 3.75rem;
    height: 3.75rem;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: #0f766e;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.timeline-body h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.timeline-body p {
    font-size: 0.9375rem;
    opacity: 0.92;
    line-height: 1.75;
    margin: 0;
}

/* ─── 业态标签 ─── */
.partners-section {
    padding: 4rem 0 5rem;
    position: relative;
    z-index: 1;
}

.partners-section .section-title {
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    color: #0b1224;
    text-align: center;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.partners-lead {
    text-align: center;
    font-size: 0.9375rem;
    color: #94a3b8;
    margin-bottom: 2rem;
}

.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    max-width: 820px;
    margin: 0 auto;
}

.page-about .partner-item {
    padding: 0.65rem 1.15rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(34, 211, 238, 0.15);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: all 0.3s ease;
}

.page-about .partner-item:hover {
    color: #0f766e;
    border-color: rgba(34, 211, 238, 0.35);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.1);
}

.page-about .home-roadmap-section {
    position: relative;
    z-index: 1;
}

/* 动画 */
.about-cap-card.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.about-cap-card.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 960px) {
    .about-layout {
        grid-template-columns: 1fr;
    }

    .about-section .contact-card {
        position: static;
        order: -1;
    }
}

@media (max-width: 560px) {
    .about-cap-grid {
        grid-template-columns: 1fr;
    }

    .timeline-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}