/* About Page Styles */
.about-hero {
    background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.18), transparent 55%),
                radial-gradient(circle at bottom right, rgba(139, 92, 246, 0.15), transparent 60%),
                linear-gradient(180deg, #ffffff 0%, #f1f5ff 100%);
    border-radius: 32px;
    padding: 6rem;
    display: grid;
    gap: 2.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    align-items: center;
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.08);
    position: relative;
    overflow: hidden;
}

.about-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.1), transparent 40%),
                radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.12), transparent 45%);
    opacity: 0.8;
    pointer-events: none;
}

.about-hero__content {
    position: relative;
    z-index: 1;
}

.about-hero__subtitle {
    font-size: 1rem;
    color: #64748b;
    margin-bottom: 0.8rem;
}

.about-hero__name {
    font-size: clamp(2.4rem, 3.6vw, 3.2rem);
    margin: 0;
    font-weight: 700;
    color: #1f2937;
}

.about-hero__role {
    font-size: 1.1rem;
    color: #475569;
    margin: 1rem 0 1.5rem;
    line-height: 1.7;
}

.about-hero__quote {
    position: relative;
    padding-left: 1.5rem;
    border-left: 4px solid #3b82f6;
    color: #1d4ed8;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

.about-hero__meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    color: #64748b;
    font-size: 0.95rem;
}

.about-hero__image {
    position: relative;
    z-index: 1;
    align-self: stretch;
    display: flex;
    justify-content: center;
}

.about-hero__image img {
    width: min(340px, 90%);
    border-radius: 28px;
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.25);
    object-fit: cover;
}

.about-section {
    padding: 4.5rem 1.5rem;
}

.about-section__heading {
    text-align: center;
    margin-bottom: 2.5rem;
}

.about-section__eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.85rem;
    font-weight: 700;
    color: rgba(59, 130, 246, 0.85);
    margin-bottom: 0.75rem;
}

.about-section__title {
    font-size: clamp(1.8rem, 2.6vw, 2.4rem);
    margin: 0;
    color: #0f172a;
}

.about-intro {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.about-intro__text {
    color: #475569;
    font-size: 1.05rem;
    line-height: 1.9;
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.about-stat-card {
    flex: 1 1 150px;
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.08) 100%);
    border-radius: 18px;
    padding: 1.8rem;
    text-align: center;
    color: #1e2838;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.about-stat-card__value {
    font-size: 2rem;
    font-weight: 700;
    color: #1d4ed8;
}

.about-stat-card__label {
    margin-top: 0.4rem;
    color: #475569;
}

.about-pill-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.about-pill {
    background: #ffffff;
    border-radius: 20px;
    padding: 1.6rem;
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.about-pill__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.75rem;
}

.about-pill__desc {
    color: #64748b;
    line-height: 1.7;
    font-size: 0.98rem;
}

.about-featured {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.95), rgba(99, 102, 241, 0.95));
    border-radius: 32px;
    padding: 4rem;
    color: #f8fafc;
    box-shadow: 0 40px 80px rgba(79, 70, 229, 0.35);
}

.about-featured__heading {
    text-align: center;
    margin-bottom: 2.5rem;
}

.about-featured__title {
    font-size: clamp(1.8rem, 2.8vw, 2.5rem);
    margin: 0.6rem 0;
    font-weight: 700;
}

.about-featured__subtitle {
    margin: 0;
    color: rgba(226, 232, 240, 0.85);
}

.about-featured__grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.about-feature-card {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.08) 0%, rgba(15, 23, 42, 0.16) 100%);
    border-radius: 22px;
    padding: 1.75rem;
    color: inherit;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.about-feature-card__label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: rgba(226, 232, 240, 0.75);
    margin-bottom: 0.75rem;
}

.about-feature-card__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.65rem;
}

.about-feature-card__text {
    margin: 0;
    line-height: 1.7;
    color: rgba(226, 232, 240, 0.85);
}

.about-split {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2.5rem;
}

.about-split-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.1);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.about-split-card__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.about-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.75rem;
}

.about-list li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    font-size: 1rem;
    color: #475569;
}

.about-list li::before {
    content: '•';
    color: var(--primary);
    font-size: 1.5rem;
    line-height: 1;
    margin-top: -0.15rem;
}

.about-cta {
    margin-top: 4rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 28px;
    padding: 2.5rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.about-cta__title {
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.about-cta__subtitle {
    margin: 0 0 1.5rem;
    color: #64748b;
    font-size: 1rem;
}

.about-cta__actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.about-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.about-btn--primary {
    background: linear-gradient(120deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 16px 30px rgba(59, 130, 246, 0.25);
}

.about-btn--primary:hover,
.about-btn--primary:focus {
    transform: translateY(-1px);
    box-shadow: 0 20px 36px rgba(59, 130, 246, 0.28);
}

.about-btn--ghost {
    background: rgba(255, 255, 255, 0.75);
    color: #1f2937;
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.about-btn--ghost:hover,
.about-btn--ghost:focus {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(59, 130, 246, 0.18);
}

@media (max-width: 768px) {
    .about-hero {
        padding: 2.4rem;
        border-radius: 24px;
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about-hero__title {
        font-size: clamp(2rem, 5vw, 2.4rem);
    }
    .about-hero__image {
        justify-content: center;
    }
    .about-hero__image img {
        width: 100%;
        max-width: 320px;
    }
    .about-intro {
        gap: 2rem;
    }
    .about-featured {
        padding: 3rem 2.4rem;
    }
    .about-featured__grid {
        gap: 1.5rem;
    }
    .about-cta {
        padding: 2.2rem 1.8rem;
    }
}

@media (max-width: 640px) {
    .about-section {
        padding: 3.2rem 1.5rem;
    }
    .about-intro {
        gap: 1.8rem;
    }
    .about-intro__text {
        font-size: 1rem;
    }
    .about-stats {
        gap: 1rem;
    }
    .about-stat-card {
        flex: 1 1 140px;
        padding: 1.4rem 1.2rem;
    }
    .about-stat-card__value {
        font-size: 1.7rem;
    }
    .about-pill {
        padding: 1.4rem;
    }
    .about-featured {
        padding: 2.6rem 1.8rem;
    }
    .about-featured__grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    .about-split {
        gap: 1.8rem;
    }
    .about-split-card {
        padding: 1.6rem 1.4rem;
    }
    .about-cta__actions {
        flex-direction: column;
        align-items: stretch;
    }
    .about-btn {
        width: 100%;
    }
}

@media (max-width: 500px) {
    .about-hero {
        padding: 2rem 1.4rem;
    }
    .about-hero__subtitle {
        font-size: 0.9rem;
    }
    .about-hero__role {
        font-size: 1rem;
    }
    .about-hero__quote {
        font-size: 0.96rem;
        margin-bottom: 1rem;
    }
    .about-hero__meta {
        font-size: 0.85rem;
        gap: 0.6rem;
    }
    .about-stat-card {
        flex: 1 1 130px;
    }
    .about-pill-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    .about-pill {
        padding: 1.3rem 1.2rem;
    }
    .about-feature-card {
        padding: 1.5rem 1.3rem;
    }
    .about-split-card__title {
        font-size: 1.1rem;
    }
    .about-list li {
        font-size: 0.95rem;
    }
}

@media (max-width: 420px) {
  .about-hero { padding: 1.25rem 1rem; border-radius: 20px; gap: 1.2rem; }
  .about-hero__name { font-size: 1.8rem; }
  .about-hero__quote { font-size: 0.9rem; border-left-width: 3px; }
  .about-hero__image img { max-width: 280px; }

  .about-intro__text { font-size: 0.98rem; line-height: 1.8; overflow-wrap: anywhere; word-break: break-word; }

  .about-featured { padding: 1.8rem 1.4rem; border-radius: 22px; box-shadow: 0 16px 32px rgba(79, 70, 229, 0.22); }
  .about-featured__title { font-size: 1.6rem; }
  .about-feature-card { padding: 1.2rem; }
  .about-feature-card__text { font-size: 0.95rem; overflow-wrap: anywhere; }

  .about-pill { padding: 1.1rem; }

  .about-cta { padding: 1.6rem 1.2rem; }
  .about-cta__title { font-size: 1.4rem; }
  .about-cta__subtitle { font-size: 0.95rem; }
  .about-btn { min-height: 44px; }
}

@media (max-width: 360px) {
  .about-hero { padding: 1rem 0.9rem; }
  .about-hero__name { font-size: 1.65rem; }
  .about-hero__role { font-size: 0.95rem; }
  .about-featured__title { font-size: 1.45rem; }
  .about-feature-card__title { font-size: 1.05rem; }
  .about-feature-card__text { font-size: 0.9rem; }
  .about-split-card { padding: 1.2rem; }
  .about-list li { font-size: 0.9rem; }
  .about-cta__title { font-size: 1.3rem; }
}

@media (max-width: 640px) {
  /* 第一个 section 在小屏增加左右内边距，避免贴边 */
  .about-section:first-of-type { padding-left: 1.75rem; padding-right: 1.75rem; }
}

@media (max-width: 500px) {
  .about-section:first-of-type { padding-left: 2rem; padding-right: 2rem; }
}

@media (max-width: 420px) {
  .about-section:first-of-type { padding-left: 1.5rem; padding-right: 1.5rem; }
}

@media (max-width: 360px) {
  .about-section:first-of-type { padding-left: 2.5rem; padding-right: 2.5rem; }
}