/* ============================================================
   about.css - 关于集和页面样式
   ============================================================ */

/* ============ 顶部 Hero（红色大色块） ============ */
.about-hero {
    background: #C8102E;
    color: #fff;
    padding: 76px 0 80px;
    position: relative;
    overflow: hidden;
}
.about-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.25), transparent);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.25), transparent);
    pointer-events: none;
}
.about-hero-inner {
    position: relative;
    z-index: 1;
    text-align: left;
}
.about-hero-eyebrow {
    display: inline-block;
    font-size: 12.5px;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.18em;
    line-height: 1.4;
    margin: 0 0 14px;
}
.about-hero h1 {
    font-size: clamp(34px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: 0.01em;
    line-height: 1.15;
    margin: 0 0 12px;
    max-width: 860px;
}
.about-hero p {
    font-size: 15.5px;
    line-height: 1.7;
    color: rgba(255,255,255,0.9);
    max-width: 720px;
    margin: 0 0 36px;
}
.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 28px 44px;
    padding-top: 2px;
    max-width: 100%;
    margin: 0;
    box-sizing: border-box;
    overflow: hidden;
}
.about-stat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 6px;
    padding: 0;
    flex: 0 0 auto;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}
.about-stat strong {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.01em;
    line-height: 1;
}
.about-stat span {
    font-size: 12.5px;
    color: rgba(255,255,255,0.82);
    letter-spacing: 0.03em;
    line-height: 1.4;
}

/* ============ 通用区块标题 ============ */
.about-section-head {
    text-align: center;
    margin: 0 auto 48px;
    max-width: 760px;
}
.about-section-head small {
    display: block;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: #888;
    text-transform: uppercase;
    margin-bottom: 14px;
    font-weight: 600;
}
.about-section-head h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a1a;
    letter-spacing: -0.01em;
    margin: 0 0 14px;
    line-height: 1.3;
}
.about-section-head p {
    font-size: 15px;
    color: #555;
    margin: 0;
    line-height: 1.8;
}
.about-section-head-left {
    text-align: left;
    margin-left: 0;
}
.about-section-head-left small {
    text-align: left;
}

/* ============ 品牌资产引言金句 ============ */
.about-why {
    background: #fff;
    padding: 88px 0 96px;
}
.about-why-inner {
    text-align: center;
}
/* 分隔符：— | —（中间红粗竖线） */
.about-why-divider {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 0 28px;
}
.about-why-div-line {
    width: 36px;
    height: 2px;
    background: #C8102E;
    display: inline-block;
}
.about-why-div-bar {
    width: 3px;
    height: 24px;
    background: #C8102E;
    display: inline-block;
    border-radius: 2px;
}
/* 金句 */
.about-why-quote {
    margin: 0 auto 20px;
    max-width: 880px;
    font-size: clamp(20px, 2.6vw, 28px);
    font-weight: 500;
    color: #1f2937;
    line-height: 1.7;
    letter-spacing: 0.01em;
}
.about-why-quote strong {
    font-weight: 800;
    color: #111827;
}
/* 描述段 */
.about-why-desc {
    margin: 0 auto;
    font-size: 14.5px;
    line-height: 2;
    color: #6b7280;
    max-width: 760px;
    letter-spacing: 0.01em;
}

/* ============ 品牌精神（深色居中） ============ */
.about-spirit {
    background: #1b1b1d;
    color: #fff;
    padding: 88px 0 92px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.about-spirit::before,
.about-spirit::after {
    content: "";
    position: absolute;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}
.about-spirit::before {
    left: -200px;
    top: -200px;
    background: radial-gradient(circle, rgba(200,16,46,0.15) 0%, transparent 70%);
}
.about-spirit::after {
    right: -200px;
    bottom: -200px;
    background: radial-gradient(circle, rgba(200,16,46,0.08) 0%, transparent 70%);
}
.about-spirit-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}
.about-spirit small {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    letter-spacing: 0.3em;
    margin-bottom: 28px;
    font-weight: 500;
}
.about-spirit h2 {
    font-size: clamp(32px, 4.5vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 18px;
    letter-spacing: -0.01em;
}
.about-spirit-hero-sub {
    font-size: 15.5px;
    color: #ff4d5a;
    margin: 0 0 44px !important;
    letter-spacing: 0.04em;
    font-weight: 600;
}
.about-spirit-text {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0 auto 48px;
    max-width: 560px;
}
.about-spirit-text p {
    font-size: 15px;
    line-height: 1.9;
    color: rgba(255,255,255,0.72);
    margin: 0;
    letter-spacing: 0.02em;
}
.about-spirit-text p.is-strong {
    color: #fff;
    font-weight: 700;
    font-size: 16.5px;
}
.about-spirit-text p.is-strong.has-line {
    position: relative;
    padding-top: 18px;
    margin-top: 8px;
}
.about-spirit-text p.is-strong.has-line::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: rgba(200,16,46,0.7);
}
.about-spirit-signature {
    font-size: 15px !important;
    color: rgba(255,255,255,0.85) !important;
    font-weight: 600 !important;
    margin-top: 12px !important;
    font-style: italic;
}
.about-spirit-end {
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 800;
    line-height: 1.55;
    margin: 0;
    padding-top: 36px;
    border-top: 1px solid rgba(255,255,255,0.12);
    letter-spacing: -0.01em;
    color: #fff;
}
.about-spirit-end span {
    color: #ff4d5a;
}

/* ============ 发展历程 ============ */
.about-milestones {
    background: #f7f7f8;
    padding: 88px 0 92px;
}
.about-milestones-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    max-width: 1160px;
    margin: 0 auto;
}
.about-milestone {
    background: #fff;
    border: 1px solid #ececee;
    padding: 30px 32px 34px;
    transition: all 0.25s ease;
    border-radius: 2px;
}
.about-milestone:hover {
    border-color: rgba(200,16,46,0.35);
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(0,0,0,0.04);
}
.about-year {
    display: inline-block;
    font-size: 18px;
    font-weight: 800;
    color: #c8102e;
    letter-spacing: 0.02em;
    margin-bottom: 14px;
    line-height: 1;
}
.about-milestone h3 {
    font-size: 16.5px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 10px;
}
.about-milestone p {
    font-size: 13.5px;
    line-height: 1.8;
    color: #555;
    margin: 0;
}

/* ============ 联系我们 ============ */
.about-contact {
    background: #f7f7f8;
    padding: 40px 0 100px;
}
.about-honor {
    max-width: 1100px;
    margin: 0 auto 56px;
    background: linear-gradient(135deg, #1a1a1c 0%, #252528 60%, #1a1a1c 100%);
    padding: 52px 48px 58px;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.04);
    border: 1px solid rgba(212,175,55,0.18);
}
.about-honor::before {
    content: "";
    position: absolute;
    inset: 8px;
    border: 1px solid rgba(212,175,55,0.25);
    border-radius: 2px;
    pointer-events: none;
    z-index: 0;
}
.about-honor::after {
    content: "";
    position: absolute;
    top: -120px;
    right: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(212,175,55,0.12) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.about-honor-inner {
    position: relative;
    z-index: 1;
    text-align: center;
}
.about-honor-head {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 18px;
    margin-bottom: 16px;
    width: 100%;
}
.about-honor-bar {
    width: 40px;
    height: 1px;
    background: linear-gradient(to right, transparent, #c9a961, transparent);
    display: inline-block;
}
.about-honor-head small {
    font-size: 11.5px;
    letter-spacing: 0.45em;
    color: #c9a961;
    font-weight: 600;
    display: inline-block;
}
.about-honor h2 {
    font-size: 28px;
    font-weight: 700;
    color: #e8d39a;
    margin: 0 0 12px;
    letter-spacing: 0.12em;
    background: linear-gradient(180deg, #f5deaa 0%, #c9a961 60%, #9a7d3d 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: block;
}
.about-honor-sub {
    font-size: 13.5px;
    color: rgba(255,255,255,0.55);
    margin: 0 auto 42px;
    max-width: 560px;
    line-height: 1.8;
}

.about-honor-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.about-honor-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid rgba(201,169,97,0.2);
    padding: 36px 20px 30px;
    text-align: center;
    position: relative;
    border-radius: 2px;
    transition: all 0.3s ease;
}
.about-honor-card::before {
    content: "";
    position: absolute;
    top: 14px;
    left: 14px;
    right: 14px;
    bottom: 14px;
    border: 1px solid rgba(201,169,97,0.1);
    border-radius: 1px;
    pointer-events: none;
    transition: border-color 0.3s ease;
}
.about-honor-card::after {
    content: "◆";
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(201,169,97,0.35);
    font-size: 8px;
    line-height: 1;
}
.about-honor-card:hover {
    border-color: rgba(212,175,55,0.55);
    background: linear-gradient(180deg, rgba(212,175,55,0.08) 0%, rgba(201,169,97,0.02) 100%);
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(0,0,0,0.3);
}
.about-honor-card:hover::before {
    border-color: rgba(212,175,55,0.4);
}
.about-honor-badge {
    display: inline-block;
    font-family: 'Playfair Display', 'Times New Roman', serif;
    font-size: 22px;
    font-weight: 700;
    font-style: italic;
    color: #c9a961;
    letter-spacing: 0.05em;
    line-height: 1;
    margin-bottom: 22px;
    padding-bottom: 18px;
    position: relative;
}
.about-honor-badge::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 1px;
    background: linear-gradient(to right, transparent, #c9a961, transparent);
}
.about-honor-card h3 {
    font-size: 15px;
    font-weight: 700;
    color: #f0e4c5;
    margin: 0 0 8px;
    letter-spacing: 0.04em;
}
.about-honor-card p {
    font-size: 12.5px;
    color: rgba(255,255,255,0.55);
    line-height: 1.7;
    margin: 0;
    letter-spacing: 0.02em;
}
.about-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
    align-items: stretch;
}

/* ========== 左侧：联系信息卡片 ========== */
.about-contact-info {
    position: relative;
    background: linear-gradient(160deg, #1d1d20 0%, #252528 60%, #1d1d20 100%);
    padding: 46px 42px 48px;
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.22), inset 0 1px 0 rgba(255,255,255,0.04);
    border: 1px solid rgba(201,169,97,0.2);
}
.about-contact-info::before {
    content: "";
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(201,169,97,0.18);
    border-radius: 2px;
    pointer-events: none;
    z-index: 0;
}
.about-contact-info::after {
    content: "";
    position: absolute;
    top: -100px;
    right: -100px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(200,16,46,0.18) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* 顶部标签区 */
.about-contact-info-head {
    position: relative;
    z-index: 1;
    text-align: center;
    padding-bottom: 28px;
    margin-bottom: 28px;
    border-bottom: 1px solid rgba(201,169,97,0.2);
}
.about-contact-info-head small {
    display: block;
    font-size: 11px;
    color: #c9a961;
    letter-spacing: 0.5em;
    margin-bottom: 10px;
    font-weight: 600;
}
.about-contact-info-head h3 {
    font-size: 20px;
    color: #f0e4c5;
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.08em;
    background: linear-gradient(180deg, #f5deaa 0%, #c9a961 70%, #9a7d3d 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* 信息项 */
.about-contact-item {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.about-contact-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.about-contact-icon {
    width: 42px;
    height: 42px;
    min-width: 42px;
    background: rgba(200,16,46,0.12);
    border: 1px solid rgba(200,16,46,0.35);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    flex-shrink: 0;
    margin-top: 2px;
    transition: all 0.2s ease;
}
.about-contact-item:hover .about-contact-icon {
    background: #c8102e;
    border-color: #c8102e;
}
.about-contact-item small {
    display: block;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 6px;
    letter-spacing: 0.2em;
    font-weight: 600;
    text-transform: uppercase;
}
.about-contact-item strong {
    font-size: 16px;
    font-weight: 600;
    color: #f3ead2;
    line-height: 1.55;
    display: block;
}

/* ========== 右侧：预约表单卡片 ========== */
.about-contact-form {
    position: relative;
    background: #fff;
    padding: 44px 46px 48px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    border-radius: 4px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.08), 0 1px 0 rgba(0,0,0,0.03);
    border: 1px solid #ececee;
}
.about-contact-form::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #c8102e 0%, #e85262 50%, #c8102e 100%);
    border-radius: 4px 4px 0 0;
}
.about-contact-form h3 {
    position: relative;
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 6px;
    padding-bottom: 14px;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 12px;
}
.about-contact-form h3::before {
    content: "";
    width: 18px;
    height: 2px;
    background: #c8102e;
    display: inline-block;
    flex-shrink: 0;
}
.about-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.about-contact-form input,
.about-contact-form select,
.about-contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e5e5e7;
    border-radius: 2px;
    font-size: 13.5px;
    color: #1a1a1a;
    background: #fcfcfd;
    font-family: inherit;
    transition: all 0.2s ease;
    box-sizing: border-box;
    letter-spacing: 0.02em;
}
.about-contact-form input:focus,
.about-contact-form select:focus,
.about-contact-form textarea:focus {
    outline: none;
    border-color: #c8102e;
    background: #fff;
    box-shadow: 0 4px 16px rgba(200,16,46,0.1);
}
.about-contact-form input::placeholder,
.about-contact-form textarea::placeholder {
    color: #a8a8ac;
}
.about-contact-form textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.7;
}
.about-contact-form select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none' stroke='%23c8102e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 18px center;
    background-color: #fcfcfd;
    padding-right: 44px;
    color: #1a1a1a;
}
.about-contact-form select option {
    color: #1a1a1a;
}

.about-submit {
    width: 100%;
    margin-top: 10px;
    padding: 16px 22px;
    background: linear-gradient(180deg, #c8102e 0%, #aa0e26 100%);
    color: #fff;
    border: none;
    border-radius: 2px;
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.1em;
    transition: all 0.25s ease;
    box-shadow: 0 10px 24px rgba(200,16,46,0.28);
}
.about-submit:hover {
    background: linear-gradient(180deg, #e31536 0%, #c8102e 100%);
    transform: translateY(-1px);
    box-shadow: 0 14px 30px rgba(200,16,46,0.36);
}
.about-submit span {
    transition: transform 0.2s ease;
}
.about-submit:hover span {
    transform: translateX(4px);
}

/* ============ 关于集和新版介绍模块 ============ */
.about-intro {
    background: #f9fafb;
    padding: 80px 0 96px;
}

/* 顶栏：左眉标标题 + 右按钮 */
.about-intro-top {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 36px;
}
.about-intro-eyebrow {
    display: block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #C8102E;
    margin-bottom: 10px;
}
.about-intro-title {
    margin: 0;
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-intro-top-right {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}
.about-intro-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 18px;
    border-radius: 6px;
    background: #fff;
    border: 1px solid #e5e7eb;
    color: #4b5563;
    font-size: 13.5px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.about-intro-btn svg { flex-shrink: 0; }
.about-intro-btn:hover {
    border-color: #c8102e;
    color: #c8102e;
    transform: translateY(-1px);
}
.about-intro-btn--solid {
    background: #fff;
    color: #4b5563;
}
.about-intro-btn--solid:hover {
    background: #fff0f2;
}

/* 主体 2 栏 */
.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 44px;
    align-items: stretch;
    margin-bottom: 44px;
}
.about-intro-text {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 18px;
}
.about-intro-text p {
    margin: 0;
    font-size: 15px;
    line-height: 2;
    color: #374151;
    letter-spacing: 0.01em;
}

/* 右侧深红渐变信任卡 */
.about-intro-card {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
}
.about-intro-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, #8b0a1f 0%, #C8102E 55%, #a90e26 100%);
    z-index: 0;
}
.about-intro-card-inner {
    position: relative;
    z-index: 1;
    color: #fff;
    padding: 32px 30px 30px;
    text-align: center;
}
.about-intro-card-date {
    display: block;
    font-size: 12px;
    color: rgba(255,255,255,0.75);
    letter-spacing: 0.08em;
    margin-bottom: 6px;
}
.about-intro-card-years {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 12px;
}
.about-intro-card-years strong {
    font-size: clamp(22px, 2.4vw, 30px);
    font-weight: 800;
    color: #fff;
    line-height: 1;
}
.about-intro-card-years span {
    font-size: 14.5px;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
}
.about-intro-card-title {
    margin: 0 0 26px;
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 800;
    line-height: 1.4;
    color: #fff;
    letter-spacing: 0.02em;
}
/* 3 项数据 */
.about-intro-card-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 20px 0 22px;
    border-top: 1px solid rgba(255,255,255,0.18);
    border-bottom: 1px solid rgba(255,255,255,0.18);
    margin-bottom: 24px;
}
.about-intro-card-stat {
    text-align: center;
}
.about-intro-card-stat strong {
    display: block;
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 6px;
}
.about-intro-card-stat sup {
    font-size: 0.55em;
    font-weight: 600;
    vertical-align: top;
    margin-left: 1px;
}
.about-intro-card-stat span {
    display: block;
    font-size: 12.5px;
    color: rgba(255,255,255,0.85);
}

/* 2 行 LOGO 网格 */
.about-intro-logos {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.about-intro-logos-row {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
}
.about-intro-logos-row span {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 38px;
    padding: 0 4px;
    background: #fff;
    color: #4b5563;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 600;
    text-align: center;
    line-height: 1.1;
    letter-spacing: 0.01em;
    transition: all 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.about-intro-logos-row span:hover {
    color: #c8102e;
    transform: translateY(-1px);
}

/* 底部 3 张价值卡 */
.about-intro-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.about-intro-value {
    background: #fff;
    border-radius: 10px;
    padding: 28px 26px 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: all 0.25s ease;
}
.about-intro-value:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(0,0,0,0.06);
}
.about-intro-value-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 4px;
    background: #fff0f2;
    color: #c8102e;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
}
.about-intro-value-title {
    margin: 0 0 18px;
    font-size: 17.5px;
    font-weight: 500;
    color: #1f2937;
    line-height: 1.5;
}
.about-intro-value-title strong {
    color: #c8102e;
    font-weight: 800;
    display: inline-block;
    margin-top: 2px;
}
.about-intro-value-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.about-intro-value-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13.5px;
    line-height: 1.7;
    color: #4b5563;
}
.about-intro-value-list li::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    background: #c8102e;
    border-radius: 50%;
    margin-top: 9px;
    flex-shrink: 0;
}

/* ============ 三大难题模块 ============ */
.about-problems {
    background: #fff;
    padding: 80px 0 96px;
}
.about-problems-head {
    text-align: left;
    max-width: 860px;
    margin: 0 0 42px;
}
.about-problems-title {
    margin: 0 0 10px;
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-problems-sub {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}
.about-problems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.about-problem-card {
    position: relative;
    background: #fff;
    border: 1px solid #ececef;
    border-radius: 6px;
    padding: 28px 26px 30px 30px;
    border-left: 4px solid #C8102E;
    transition: all 0.25s ease;
}
.about-problem-card:hover {
    transform: translateY(-3px);
    border-color: rgba(200,16,46,0.3);
    border-left-color: #C8102E;
    box-shadow: 0 14px 28px rgba(0,0,0,0.06);
}
.about-problem-num {
    display: block;
    font-family: "Helvetica Neue", Arial, sans-serif;
    font-size: 30px;
    font-weight: 800;
    color: #C8102E;
    line-height: 1;
    letter-spacing: 0.02em;
    margin-bottom: 14px;
}
.about-problem-name {
    margin: 0 0 12px;
    font-size: 19px;
    font-weight: 700;
    color: #111827;
}
.about-problem-desc {
    margin: 0;
    font-size: 14px;
    line-height: 1.9;
    color: #4b5563;
}

/* ============ 四大价值模块 ============ */
.about-values {
    background: #f9fafb;
    padding: 80px 0 96px;
}
.about-values-head {
    text-align: left;
    max-width: 860px;
    margin: 0 0 42px;
}
.about-values-title {
    margin: 0 0 10px;
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-values-sub {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}
.about-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-bottom: 40px;
}
.about-value-card {
    background: #fff;
    border-radius: 8px;
    padding: 26px 24px 28px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: all 0.25s ease;
}
.about-value-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.07);
}
.about-value-icon {
    width: 40px;
    height: 40px;
    background: #fff0f2;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    flex-shrink: 0;
}
.about-value-icon svg { flex-shrink: 0; }
.about-value-name {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    color: #111827;
}
.about-value-desc {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.9;
    color: #6b7280;
}

/* 底部深红长条 banner */
.about-values-banner {
    background: linear-gradient(90deg, #C8102E 0%, #b20e28 50%, #C8102E 100%);
    border-radius: 6px;
    padding: 18px 24px;
    text-align: center;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.06em;
}
.about-values-banner span {
    display: inline-block;
    white-space: nowrap;
}

/* ============ 差异化对比表 ============ */
.about-diff {
    background: #fff;
    padding: 80px 0 96px;
}
.about-diff-head {
    text-align: left;
    max-width: 900px;
    margin: 0 0 42px;
}
.about-diff-title {
    margin: 0 0 10px;
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-diff-sub {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}

/* 表格外层：防止移动端撑破容器 */
.about-diff-table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 10px;
    border: 1px solid #ececef;
    background: #fff;
}
.about-diff-table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    table-layout: fixed;
}
.about-diff-table th,
.about-diff-table td {
    padding: 0;
    vertical-align: middle;
    border-bottom: 1px solid #f1f2f4;
    font-size: 14.5px;
}
.about-diff-table thead th {
    padding: 20px 22px 18px;
    text-align: center;
    font-size: 14.5px;
    font-weight: 500;
    color: #4b5563;
    background: #fafbfc;
    border-bottom: 1px solid #ececef;
}
/* 表头：集和列 - 红底白字 */
.about-diff-table thead th.about-diff-col.is-feature {
    background: #C8102E;
    color: #fff;
    font-weight: 700;
    font-size: 15px;
}
/* 空表头（左上角） */
.about-diff-table .about-diff-col-label {
    width: 14%;
    text-align: left;
    background: #fafbfc;
}
.about-diff-table .about-diff-col {
    width: 17.5%;
}
.about-diff-table .about-diff-col.is-feature {
    width: 31%;
}
/* 行标签列（第一列深灰文字） */
.about-diff-table .about-diff-row-label {
    padding: 18px 22px;
    text-align: left;
    font-size: 13.5px;
    font-weight: 600;
    color: #6b7280;
    background: #fafbfc;
    border-right: 1px solid #f1f2f4;
    letter-spacing: 0.02em;
}
.about-diff-table td {
    padding: 18px 22px;
    text-align: center;
    color: #4b5563;
    line-height: 1.7;
    font-size: 14px;
}
.about-diff-table td span,
.about-diff-table th span {
    display: block;
    max-width: 100%;
    word-break: break-word;
}
/* 集和数据列 - 红底白字加粗 */
.about-diff-table tbody td.is-feature {
    background: #fff0f2;
    color: #C8102E;
    font-weight: 700;
    line-height: 1.7;
}
/* 斑马条纹（除表头和最后一行） */
.about-diff-table tbody tr:nth-child(even) td:not(.is-feature),
.about-diff-table tbody tr:nth-child(even) .about-diff-row-label {
    background: #fcfcfd;
}
/* 去掉最后一行底边线 */
.about-diff-table tbody tr:last-child th,
.about-diff-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============ 方法论体系：像经营银行一样 ============ */
.about-method {
    padding: 80px 0 96px;
    background:
        radial-gradient(ellipse at 10% 0%, rgba(255,199,210,0.28) 0%, rgba(255,199,210,0) 50%),
        radial-gradient(ellipse at 90% 10%, rgba(200,220,255,0.22) 0%, rgba(200,220,255,0) 55%),
        radial-gradient(ellipse at 50% 100%, rgba(255,200,220,0.18) 0%, rgba(255,200,220,0) 55%),
        linear-gradient(180deg, #ffffff 0%, #fbfbfc 100%);
}
.about-method-head {
    text-align: left;
    max-width: 960px;
    margin: 0 0 42px;
}
.about-method-eyebrow {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: #C8102E;
    margin-bottom: 10px;
    text-transform: uppercase;
}
.about-method-title {
    margin: 0 0 8px;
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-method-sub {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
}
.about-method-desc {
    margin: 0;
    font-size: 14.5px;
    line-height: 2;
    color: #4b5563;
}

/* 3 卡 Grid */
.about-method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-bottom: 40px;
}
.about-method-card {
    background: #fff;
    border-radius: 10px;
    padding: 26px 24px 28px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: all 0.25s ease;
}
.about-method-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 36px rgba(200,16,46,0.08), 0 2px 6px rgba(0,0,0,0.05);
}
.about-method-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.about-method-num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #C8102E;
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 10px rgba(200,16,46,0.2);
}
.about-method-name {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    color: #111827;
}
.about-method-tag {
    margin-left: auto;
    padding: 3px 10px;
    border-radius: 4px;
    background: #fff0f2;
    color: #C8102E;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
    flex-shrink: 0;
    white-space: nowrap;
}
.about-method-desc-line {
    margin: 0 0 14px;
    font-size: 14px;
    line-height: 1.85;
    color: #374151;
}
.about-method-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.about-method-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13.5px;
    line-height: 1.7;
    color: #4b5563;
    padding-left: 14px;
    position: relative;
}
.about-method-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    background: #C8102E;
    border-radius: 50%;
    flex-shrink: 0;
}

/* 底部 4 条长胶囊 */
.about-method-pills {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.about-method-pill {
    padding: 14px 18px;
    border-radius: 8px;
    background: linear-gradient(90deg, #fff0f2 0%, #ffe3e8 100%);
    color: #952a40;
    font-size: 13.5px;
    line-height: 1.6;
    font-weight: 500;
    text-align: center;
    border: 1px solid rgba(200,16,46,0.14);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.about-method-pill strong {
    color: #C8102E;
    font-weight: 700;
    margin-right: 2px;
}

/* ============ 核心业务模块 ============ */
.about-business {
    background: #fff;
    padding: 80px 0 96px;
}
.about-business-head {
    text-align: left;
    max-width: 900px;
    margin: 0 0 42px;
}
.about-business-title {
    margin: 0 0 8px;
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-business-sub {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}

/* 业务行列表 */
.about-business-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #ececef;
    background: #f9fafb;
}
.about-business-item {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 36px;
    padding: 28px 34px;
    align-items: center;
    background: #fff;
    border-bottom: 1px solid #f1f2f4;
    transition: background 0.2s ease;
}
.about-business-item:last-child {
    border-bottom: none;
}
.about-business-item.is-alt {
    background: #f9fafb;
}
.about-business-item:hover {
    background: #fff9fa;
}
.about-business-item.is-alt:hover {
    background: #fff4f5;
}
/* 左栏：标题行 + 标签 */
.about-business-left {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}
.about-business-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}
.about-business-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #C8102E;
    color: #C8102E;
    font-size: 14px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.about-business-item.is-alt .about-business-num {
    background: #fff;
}
.about-business-name {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    color: #111827;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}
.about-business-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 4px 12px;
    border-radius: 4px;
    background: #fff0f2;
    color: #C8102E;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.about-business-item.is-alt .about-business-tag {
    background: #fff;
    border: 1px solid rgba(200,16,46,0.18);
}
/* 右栏：描述 */
.about-business-desc {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.9;
    color: #4b5563;
}

/* ============ 杰出企业同行者 ============ */
.about-partners {
    background: #fafafa;
    padding: 80px 0 96px;
}
.about-partners-head {
    text-align: left;
    max-width: 980px;
    margin: 0 0 44px;
}
.about-partners-title {
    margin: 0 0 10px;
    font-size: clamp(26px, 3.2vw, 38px);
    font-weight: 900;
    color: #111827;
    letter-spacing: 0.005em;
}
.about-partners-sub {
    margin: 0;
    font-size: 15.5px;
    font-weight: 500;
    color: #374151;
}
/* 表格 */
.about-partners-table {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #ececef;
}
.about-partners-row {
    display: grid;
    grid-template-columns: 200px 320px 1fr;
    gap: 0;
    border-bottom: 1px solid #f1f2f4;
    transition: background 0.18s ease;
}
.about-partners-row:last-child {
    border-bottom: none;
}
.about-partners-row--head {
    border-top: 2px solid #111827;
    background: #fff;
}
.about-partners-row--head .about-partners-cell span {
    font-size: 14px;
    font-weight: 700;
    color: #111827;
}
.about-partners-row--body:hover {
    background: #fff8f9;
}
.about-partners-cell {
    padding: 20px 24px;
    font-size: 14.5px;
    line-height: 1.75;
    display: flex;
    align-items: center;
    min-width: 0;
}
/* 赛道列 */
.about-partners-cell.is-sort {
    color: #374151;
    padding-left: 28px;
}
.about-partners-sort-name {
    font-weight: 700;
    color: #C8102E;
    font-size: 14.5px;
    letter-spacing: 0.01em;
}
/* 案例列 */
.about-partners-cell.is-case {
    color: #1f2937;
    font-weight: 500;
    border-left: 1px solid #f1f2f4;
}
/* 成果列 */
.about-partners-cell.is-result {
    color: #6b7280;
    border-left: 1px solid #f1f2f4;
    padding-right: 32px;
    flex-wrap: wrap;
}

/* ============ 关于集和创始人 ============ */
.about-founder {
    background: #fff;
    padding: 80px 0 96px;
}
.about-founder-head {
    text-align: left;
    margin: 0 0 40px;
}
.about-founder-eyebrow {
    display: inline-block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #C8102E;
}
.about-founder-title {
    margin: 0;
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
/* 主 grid 1:1 */
.about-founder-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: stretch;
}
/* 左照片 */
.about-founder-photo {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(17, 24, 39, 0.12);
    background: linear-gradient(180deg, #f3ece5 0%, #e9d9c9 100%);
    height: 100%;
    min-height: 0;
}
.about-founder-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.45s ease;
}
.about-founder-photo:hover img {
    transform: scale(1.04);
}
/* 右介绍 */
.about-founder-info {
    min-width: 0;
}
.about-founder-name {
    margin: 0 0 18px;
    font-size: clamp(30px, 3.4vw, 42px);
    font-weight: 900;
    color: #111827;
    letter-spacing: 0.01em;
    line-height: 1.1;
}
.about-founder-lead {
    margin: 0 0 22px;
    font-size: 16.5px;
    font-weight: 600;
    color: #1f2937;
    line-height: 1.7;
}
.about-founder-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}
.about-founder-body p {
    margin: 0;
    font-size: 14.5px;
    line-height: 2;
    color: #4b5563;
    text-indent: 0;
}
/* 核心知识产权灰框 */
.about-founder-ip {
    border: 1px solid #ececef;
    border-radius: 10px;
    padding: 20px 24px 22px;
    background: #fafafa;
}
.about-founder-ip-title {
    font-size: 14px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 14px;
}
.about-founder-ip-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.about-founder-ip-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    line-height: 1.65;
    color: #374151;
}
.about-founder-ip-dot {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    margin-top: 4px;
    border-radius: 50%;
    border: 2px solid #C8102E;
    background: #fff;
    position: relative;
}
.about-founder-ip-dot::after {
    content: "";
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: #C8102E;
}

/* ============ 为什么是集和 ============ */
.about-why {
    background: #fff;
    padding: 80px 0 96px;
}
.about-why-head {
    text-align: left;
    max-width: 900px;
    margin: 0 0 44px;
}
.about-why-title {
    margin: 0 0 8px;
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
}
.about-why-sub {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}
/* 2x2 卡片 */
.about-why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 36px;
}
.about-why-card {
    background: #fff;
    border: 1px solid #ececef;
    border-radius: 10px;
    padding: 28px 28px 30px;
    transition: all 0.25s ease;
}
.about-why-card:hover {
    transform: translateY(-3px);
    border-color: #f7c8d0;
    box-shadow: 0 18px 36px rgba(200,16,46,0.06), 0 2px 6px rgba(0,0,0,0.03);
}
/* 红色标签 + 左边红竖线 */
.about-why-tag {
    display: inline-flex;
    align-items: center;
    position: relative;
    padding-left: 14px;
    margin-bottom: 16px;
}
.about-why-tag::before {
    content: "";
    position: absolute;
    left: 0;
    top: 3px;
    bottom: 3px;
    width: 3px;
    border-radius: 2px;
    background: #C8102E;
}
.about-why-tag span {
    font-size: 16px;
    font-weight: 800;
    color: #C8102E;
    letter-spacing: 0.02em;
}
.about-why-desc {
    margin: 0;
    font-size: 14.5px;
    line-height: 2;
    color: #4b5563;
}
/* 渐变 banner */
.about-why-banner {
    border-radius: 10px;
    padding: 30px 40px 32px;
    text-align: center;
    background: linear-gradient(90deg, #eef2ff 0%, #f5f1ff 35%, #fdeef3 75%, #fef1f5 100%);
    position: relative;
    overflow: hidden;
}
.about-why-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 10% 50%, rgba(180,200,255,0.22) 0%, rgba(180,200,255,0) 55%),
        radial-gradient(ellipse at 90% 50%, rgba(255,180,200,0.24) 0%, rgba(255,180,200,0) 55%);
    pointer-events: none;
}
.about-why-banner > * { position: relative; z-index: 1; }
.about-why-banner-title {
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.01em;
    margin-bottom: 8px;
}
.about-why-banner-sub {
    margin: 0;
    font-size: 14.5px;
    color: #4b5563;
}

/* ============ 响应式 ============ */
@media (max-width: 1180px) {
    .about-intro-logos-row { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 1000px) {
    .about-intro { padding: 64px 0 72px; }
    .about-intro-grid { grid-template-columns: 1fr; gap: 32px; }
    .about-intro-values { grid-template-columns: 1fr; }
    .about-intro-top { flex-direction: column; align-items: flex-start; gap: 18px; }
    .about-problems { padding: 60px 0 68px; }
    .about-problems-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .about-values { padding: 60px 0 68px; }
    .about-values-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 28px; }
    .about-diff { padding: 60px 0 68px; }
    .about-diff-table .about-diff-col-label { width: 16%; }
    .about-diff-table .about-diff-col { width: 19%; }
    .about-diff-table .about-diff-col.is-feature { width: 27%; }
    .about-method { padding: 60px 0 68px; }
    .about-method-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 28px; }
    .about-method-pills { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .about-business { padding: 60px 0 68px; }
    .about-business-item { grid-template-columns: 260px 1fr; gap: 24px; padding: 22px 26px; }
    .about-business-name { font-size: 18px; }
    .about-partners { padding: 60px 0 68px; }
    .about-partners-title { font-size: 30px; }
    .about-partners-row { grid-template-columns: 170px 260px 1fr; }
    .about-partners-cell { padding: 18px 20px; font-size: 14px; }
    .about-partners-cell.is-sort { padding-left: 24px; }
    .about-partners-cell.is-result { padding-right: 24px; }
    .about-founder { padding: 60px 0 68px; }
    .about-founder-head { margin-bottom: 32px; }
    .about-founder-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 36px; }
    .about-founder-name { font-size: 34px; }
    .about-founder-lead { font-size: 15.5px; }
    .about-why { padding: 60px 0 68px; }
    .about-why-head { margin-bottom: 32px; }
    .about-why-grid { gap: 16px; }
    .about-why-card { padding: 22px 22px 24px; }
    .about-why-banner { padding: 24px 28px 26px; }
}
@media (max-width: 640px) {
    .about-intro { padding: 44px 0 52px; }
    .about-intro-top { margin-bottom: 26px; }
    .about-intro-top-right { width: 100%; }
    .about-intro-btn { flex: 1; justify-content: center; font-size: 13px; height: 40px; }
    .about-intro-text p { font-size: 14px; line-height: 1.9; }
    .about-intro-card-inner { padding: 24px 20px 22px; }
    .about-intro-card-title { margin-bottom: 20px; }
    .about-intro-card-stats { padding: 16px 0; margin-bottom: 18px; }
    .about-intro-logos-row { grid-template-columns: repeat(4, 1fr); gap: 6px; }
    .about-intro-logos-row span { height: 34px; font-size: 10.5px; }
    .about-intro-values { gap: 14px; margin-bottom: 0; }
    .about-intro-value { padding: 22px 20px; }
    .about-problems { padding: 44px 0 52px; }
    .about-problems-head { margin-bottom: 28px; }
    .about-problems-title { font-size: 22px; }
    .about-problems-grid { grid-template-columns: 1fr; gap: 14px; }
    .about-problem-card { padding: 22px 22px 24px 24px; }
    .about-problem-num { font-size: 26px; margin-bottom: 10px; }
    .about-problem-name { font-size: 17px; }
    .about-problem-desc { font-size: 13.5px; line-height: 1.8; }
    .about-values { padding: 44px 0 52px; }
    .about-values-head { margin-bottom: 28px; }
    .about-values-title { font-size: 22px; }
    .about-values-grid { grid-template-columns: 1fr; gap: 14px; margin-bottom: 22px; }
    .about-value-card { padding: 22px 20px 24px; }
    .about-values-banner { padding: 14px 18px; font-size: 14px; letter-spacing: 0.04em; }
    .about-values-banner span { white-space: normal; }
    .about-diff { padding: 44px 0 52px; }
    .about-diff-head { margin-bottom: 28px; }
    .about-diff-title { font-size: 22px; }
    .about-diff-table .about-diff-col-label { width: 120px; min-width: 120px; }
    .about-diff-table .about-diff-col { width: 140px; min-width: 140px; }
    .about-diff-table .about-diff-col.is-feature { width: 200px; min-width: 200px; }
    .about-diff-table thead th { padding: 16px 14px; font-size: 13.5px; }
    .about-diff-table .about-diff-row-label { padding: 16px 14px; font-size: 12.5px; }
    .about-diff-table td { padding: 16px 14px; font-size: 13px; }
    .about-method { padding: 44px 0 52px; }
    .about-method-head { margin-bottom: 28px; }
    .about-method-title { font-size: 22px; }
    .about-method-grid { grid-template-columns: 1fr; gap: 14px; margin-bottom: 22px; }
    .about-method-card { padding: 22px 20px 24px; }
    .about-method-name { font-size: 18px; }
    .about-method-card-head { flex-wrap: wrap; gap: 8px; }
    .about-method-tag { margin-left: 0; }
    .about-method-pills { grid-template-columns: 1fr; gap: 10px; }
    .about-method-pill { padding: 12px 16px; font-size: 13px; }
    .about-business { padding: 44px 0 52px; }
    .about-business-head { margin-bottom: 28px; }
    .about-business-title { font-size: 22px; }
    .about-business-item { grid-template-columns: 1fr; gap: 14px; padding: 20px 20px 22px; }
    .about-business-left { gap: 8px; }
    .about-business-name { font-size: 17px; }
    .about-business-desc { font-size: 13.5px; line-height: 1.8; }
    .about-partners { padding: 44px 0 52px; }
    .about-partners-head { margin-bottom: 28px; }
    .about-partners-title { font-size: 24px; }
    .about-partners-sub { font-size: 14.5px; line-height: 1.8; }
    .about-partners-table { border-radius: 8px; }
    .about-partners-row { grid-template-columns: 1fr; border-bottom: none; }
    .about-partners-row--head { display: none; }
    .about-partners-row--body {
        padding: 18px 18px 20px;
        border-bottom: 1px solid #f1f2f4;
        gap: 10px;
    }
    .about-partners-cell { padding: 0; border-left: none !important; }
    .about-partners-cell.is-sort,
    .about-partners-cell.is-case,
    .about-partners-cell.is-result { padding-left: 0; padding-right: 0; }
    .about-partners-cell::before {
        display: inline-block;
        font-weight: 700;
        color: #9ca3af;
        font-size: 12px;
        min-width: 74px;
        margin-right: 10px;
    }
    .about-partners-cell.is-sort::before { content: "赛道"; }
    .about-partners-cell.is-case::before { content: "代表案例"; }
    .about-partners-cell.is-result::before { content: "核心成果"; }
    .about-partners-sort-name { font-size: 14px; }
    .about-partners-cell.is-case { font-size: 13.5px; }
    .about-partners-cell.is-result { font-size: 13.5px; line-height: 1.7; }
    .about-founder { padding: 44px 0 52px; }
    .about-founder-head { margin-bottom: 26px; }
    .about-founder-title { font-size: 24px; }
    .about-founder-grid { grid-template-columns: 1fr; gap: 28px; }
    .about-founder-photo {
        aspect-ratio: 4 / 3;
        max-height: 420px;
        margin: 0 auto;
        width: 100%;
    }
    .about-founder-name { font-size: 28px; margin-bottom: 14px; }
    .about-founder-lead { font-size: 15px; margin-bottom: 18px; }
    .about-founder-body { gap: 10px; margin-bottom: 20px; }
    .about-founder-body p { font-size: 13.5px; line-height: 1.85; }
    .about-founder-ip { padding: 18px 20px 20px; }
    .about-founder-ip-list { gap: 8px; }
    .about-founder-ip-list li { font-size: 13.5px; }
    .about-founder-ip-dot { width: 13px; height: 13px; }
    .about-why { padding: 44px 0 52px; }
    .about-why-head { margin-bottom: 28px; }
    .about-why-title { font-size: 24px; }
    .about-why-sub { font-size: 14.5px; line-height: 1.8; }
    .about-why-grid { grid-template-columns: 1fr; gap: 14px; margin-bottom: 24px; }
    .about-why-card { padding: 20px 20px 22px; }
    .about-why-tag { margin-bottom: 12px; }
    .about-why-tag span { font-size: 15px; }
    .about-why-desc { font-size: 13.5px; line-height: 1.85; }
    .about-why-banner { padding: 20px 22px 22px; border-radius: 8px; }
    .about-why-banner-title { font-size: 17px; margin-bottom: 6px; letter-spacing: 0; }
    .about-why-banner-sub { font-size: 13.5px; }
}