/* ============================
   亮蓝科技 × 方案二（完整对齐版）
   严格对应 HTML 类名，不缺失、不覆盖
   ============================ */

.ssldun-about {
    position: relative;
    padding: 20px 0 20px;
    color: #0b1f33;
    /* background:
        radial-gradient(circle at 85% 18%, rgba(255, 255, 255, 0.5) 0, transparent 26%),
        radial-gradient(circle at 12% 88%, rgba(0, 220, 255, 0.28) 0, transparent 30%),
        linear-gradient(135deg, #006eff, #204cfd); */
    overflow: hidden;
    isolation: isolate;
    /* linear-gradient(to top, #006eff, #204cfd); */
}

/* 科技安全插画底纹 */
.ssldun-about::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.7;
    background:
        radial-gradient(circle at 78% 36%, transparent 58px, rgba(255, 255, 255, 0.18) 59px, rgba(255, 255, 255, 0.18) 62px, transparent 63px),
        radial-gradient(circle at 78% 36%, transparent 74px, rgba(255, 255, 255, 0.10) 75px, rgba(255, 255, 255, 0.10) 78px, transparent 79px),
        radial-gradient(circle at 18% 28%, transparent 46px, rgba(255, 255, 255, 0.16) 47px, rgba(255, 255, 255, 0.16) 50px, transparent 51px),
        radial-gradient(circle at 18% 28%, transparent 62px, rgba(255, 255, 255, 0.08) 63px, rgba(255, 255, 255, 0.08) 66px, transparent 67px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px) 0 0 / 36px 36px,
        linear-gradient(rgba(255, 255, 255, 0.10) 1px, transparent 1px) 0 0 / 36px 36px,
        radial-gradient(circle at 88% 72%, rgba(255, 255, 255, 0.55) 1.5px, transparent 2.5px),
        radial-gradient(circle at 82% 80%, rgba(255, 255, 255, 0.45) 1.5px, transparent 2.5px),
        radial-gradient(circle at 92% 82%, rgba(255, 255, 255, 0.40) 1.5px, transparent 2.5px),
        linear-gradient(105deg, transparent 52%, rgba(255, 255, 255, 0.18) 53%, transparent 54%);
    mask-image: radial-gradient(circle at 70% 40%, #000 55%, transparent 92%);
    -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 55%, transparent 92%);
}

.ssldun-about>* {
    position: relative;
    z-index: 1;
}

.ssldun-about .ssldun-about-container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

/* ── 主网格 ── */
.ssldun-about .ssldun-about-main-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 26px;
    align-items: stretch;
}

/* ============================
   左侧：Certum 白玻璃卡
   ============================ */
.ssldun-about .ssldun-about-left-block {
    min-width: 0;
}

.ssldun-about .ssldun-about-certum-intro-plain {
    height: 100%;
    background: rgba(255, 255, 255, 1);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    padding: 30px 32px;
    box-shadow:
        0 9px 24px rgba(0, 40, 120, 0.22),
        0 2px 0 rgba(255, 255, 255, 0.4) inset;
    transition: transform 0.35s, box-shadow 0.35s;
}

.ssldun-about .ssldun-about-certum-intro-plain:hover {
    transform: translateY(-3px);
    box-shadow:
        0 24px 60px rgba(0, 60, 160, 0.28),
        0 2px 0 rgba(255, 255, 255, 0.8) inset;
}

/* 公司名 Certum + Logo */
.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 14px;
    background: #0066ff;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    letter-spacing: 0.2px;
    line-height: 54px;
}

/* Logo 玻璃容器 */
.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name .ssldun-about-logo-glass {
    padding: 6px 16px;
    border-radius: 13px;
    /* background: linear-gradient(135deg, #007bff, #00c8e8); */
    /* background: linear-gradient(135deg, #0037ff, #1bcaff); */
    background-color: #0066ff;
    box-shadow:
        0 6px 18px rgba(0, 123, 255, 0.32),
        0 0 0 1px rgba(255, 255, 255, 0.4) inset;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s;
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name .ssldun-about-logo-glass:hover {
    transform: translateY(-2px) scale(1.03);
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name .ssldun-about-logo-glass img {
    width: 160px;
    display: block;
    /* filter: brightness(0) invert(1) drop-shadow(0 1px 3px rgba(0, 0, 0, 0.2)); */
}

/* 副标题行（盾牌 + 认证标签） */
.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-sub {
    font-size: 14px;
    color: #243a55;
    margin: 0 0 18px;
    padding-bottom: 16px;
    border-bottom: 1px dashed rgba(0, 123, 255, 0.25);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-sub>i.fa-shield-alt {
    color: #fff;
    /* background: linear-gradient(135deg, #007bff, #00c8e8); */
    background: linear-gradient(135deg, #0037ff, #1bcaff);
    padding: 7px;
    border-radius: 10px;
    font-size: 12px;
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-sub .ssldun-about-about-item {
    border: 1px solid rgba(0, 91, 219, 0.08);
    border-radius: 20px;
    padding: 3px 11px;
    margin: 0 2px;
    color: #0066ff;
    /* background: linear-gradient(135deg, #dbeafe, #e0f2fe); */
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 6px rgba(0, 91, 219, 0.08);
}

/* 描述段落 */
.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-certum-remark-item {
    font-size: 16px;
    line-height: 1.75;
    color: #0f2a44;
    margin: 0 0 12px;
    padding: 10px 14px 10px 16px;
    border: 1px solid rgba(0, 140, 255, 0.12);
    border-left: 4px solid #0066ff;
    border-radius: 0 12px 12px 0;
    box-shadow: 0 4px 12px rgba(0, 80, 200, 0.06);
    transition: transform 0.25s, border-left-color 0.25s;
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-certum-remark-item:hover {
    transform: translateX(3px);
    border-left-color: #00d42e;
}

.ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-certum-remark-item strong {
    color: #0066ff;
    font-weight: 700;
}

/* 核心产品区 */
.ssldun-about .ssldun-about-certum-advantage-wrap {
    margin-top: 22px;
}

.ssldun-about .ssldun-about-certum-advantage-title {
    font-size: 16px;
    font-weight: 800;
    color: #0066ff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.3px;
}

.ssldun-about .ssldun-about-certum-advantage-title i {
    color: #fff;
    /* background: linear-gradient(135deg, #008cff, #00c8d8); */
    background: linear-gradient(135deg, #0037ff, #1bcaff);
    padding: 7px;
    border-radius: 10px;
    font-size: 12px;
    box-shadow: 0 5px 12px rgba(0, 120, 255, 0.32);
}

.ssldun-about .ssldun-about-product-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ssldun-about .ssldun-about-product-link-item {
    padding: 9px 18px;
    border-radius: 25px;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #0037ff, #1bcaff);
    /* background: linear-gradient(135deg, #007bff, #00bfef); */
    box-shadow:
        0 7px 18px rgba(0, 90, 220, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.35) inset;
    transition: all 0.25s;
}

.ssldun-about .ssldun-about-product-link-item:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 15px rgba(0, 90, 220, 0.42),
        0 0 9px rgba(0, 200, 255, 0.55);
}

/* ============================
   右侧：SSLDUN + 4卡片
   ============================ */
.ssldun-about .ssldun-about-right-block {
    display: flex;
    flex-direction: column;
    gap: 25px;
    height: 100%;
    justify-content: center;
    min-width: 0;
}

/* SSLDUN 介绍卡片 */
.ssldun-about .ssldun-about-ssldun-intro-plain {
    /* background: linear-gradient(135deg, #006eff, #00c6ff); */
    background: linear-gradient(135deg, #001effd3, #00e5ffd5);
    border-radius: 24px;
    padding: 28px 32px;
    box-shadow: 0 4px 12px rgba(0, 60, 160, 0.3), 0 0 24px rgba(0, 180, 255, 0.25);
    transition: transform 0.35s, box-shadow 0.35s;
    color: #fff;
}

.ssldun-about .ssldun-about-ssldun-intro-plain:hover {
    transform: translateY(-4px);
    box-shadow:
        0 26px 64px rgba(0, 60, 160, 0.42),
        0 0 30px rgba(0, 210, 255, 0.38);
}

.ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-company-name {
    font-size: 27px;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    text-shadow: 0 2px 10px rgba(0, 40, 120, 0.28);
}

.ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-company-name .ssldun-about-cn-dot {
    width: 13px;
    height: 13px;
    border-radius: 50%;
    flex-shrink: 0;
    background: #fff;
    box-shadow:
        0 0 0 4px rgba(255, 255, 255, 0.28),
        0 0 18px rgba(255, 255, 255, 0.75);
}

.ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-badge-cert {
    color: #1f75ff;
    font-size: 18px;
    padding: 6px 15px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow:
        0 5px 14px rgba(0, 0, 0, 0.14),
        0 0 0 1px rgba(255, 255, 255, 0.6) inset;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-weight: 700;
}

.ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-sub {
    /* font-size: 14px; */
    color: rgba(255, 255, 255, 0.96);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 7px;
    font-weight: 500;
    text-shadow: 0 1px 6px rgba(0, 30, 90, 0.18);
}

/* ── 4个卡片 ── */
.ssldun-about .ssldun-about-badge-grid {
    display: grid;
    gap: 25px;
    grid-template-columns: 1fr 1fr;
}

.ssldun-about .ssldun-about-badge-glass {
    border-radius: 20px;
    padding: 19px 17px;
    color: #fff;
    box-shadow:
        0 10px 24px rgba(0, 60, 160, 0.22),
        0 0 0 1px rgba(255, 255, 255, 0.18) inset;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    gap: 8px;
    /* min-height: 112px; */
    position: relative;
    overflow: hidden;
    cursor: pointer;
    /* 玻璃感核心 */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

.ssldun-about .ssldun-about-badge-glass::after {
    content: "";
    position: absolute;
    right: -26px;
    top: -26px;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    pointer-events: none;
}

.ssldun-about .ssldun-about-badge-glass:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow:
        0 18px 38px rgba(0, 60, 160, 0.32),
        0 0 18px rgba(0, 210, 255, 0.28);
}

.ssldun-about .ssldun-about-badge-glass:nth-child(1) {
    /* background: linear-gradient(135deg, #0b56ff, #61caff); */
    background: linear-gradient(135deg, rgba(0, 175, 255, 0.9), rgba(41, 182, 246, 0.9));
}

.ssldun-about .ssldun-about-badge-glass:nth-child(2) {
    /* background: linear-gradient(135deg, #e5644f, #fffb6f); */
    background: linear-gradient(135deg, rgba(255, 197, 8, 0.87), rgba(255, 201, 40, 0.884));
}

.ssldun-about .ssldun-about-badge-glass:nth-child(3) {
    /* background: linear-gradient(135deg, #43aa64, #83f51a); */
    background: linear-gradient(135deg, rgba(20, 168, 84, 0.863), rgba(59, 237, 68, 0.884));
}

.ssldun-about .ssldun-about-badge-glass:nth-child(4) {
    /* background: linear-gradient(135deg, rgba(239, 83, 80, 0.88), rgba(229, 57, 53, 0.88)); */
    background: linear-gradient(135deg, rgba(255, 66, 63, 0.897), rgba(253, 64, 61, 0.897));
}

.ssldun-about .ssldun-about-badge-glass:nth-child(1):hover {
    box-shadow: 0 9px 19px rgba(0, 175, 255, 0.12), 0 0 9px rgba(41, 182, 246, 0.18);
}

.ssldun-about .ssldun-about-badge-glass:nth-child(2):hover {
    box-shadow: 0 9px 19px rgba(255, 197, 8, 0.12), 0 0 9px rgba(255, 202, 40, 0.18);
}

.ssldun-about .ssldun-about-badge-glass:nth-child(3):hover {
    box-shadow: 0 9px 19px rgba(20, 168, 84, 0.12), 0 0 9px rgba(59, 237, 68, 0.18);
}

.ssldun-about .ssldun-about-badge-glass:nth-child(4):hover {
    box-shadow: 0 9px 19px rgba(255, 66, 63, 0.12), 0 0 9px rgba(253, 64, 61, 0.18);
}

.ssldun-about .ssldun-about-icon-year-row {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    z-index: 1;
}

.ssldun-about .ssldun-about-icon-wrap {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.28);
    backdrop-filter: blur(6px);
    box-shadow:
        0 4px 10px rgba(0, 30, 90, 0.18),
        inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.ssldun-about .ssldun-about-year-text {
    /* font-size: 14px; */
    font-weight: 800;
    color: #fff;
    text-shadow: 0 1px 6px rgba(0, 40, 120, 0.25);
}

.ssldun-about .ssldun-about-badge-glass .ssldun-about-info {
    position: relative;
    z-index: 1;
}

.ssldun-about .ssldun-about-badge-glass .ssldun-about-info h4 {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 4px 0;
    text-shadow: 0 1px 6px rgba(0, 30, 90, 0.2);
}

.ssldun-about .ssldun-about-badge-glass .ssldun-about-info p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.94);
    margin: 0;
    line-height: 1.55;
    font-weight: 500;
}

/* ============================
   底部 cert-bar
   ============================ */
.ssldun-about .ssldun-about-cert-bar {
    margin-top: 26px;
    background: rgba(255, 255, 255, 1);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 1);
    border-radius: 20px;
    padding: 18px 28px;
    box-shadow:
        0 14px 38px rgba(0, 40, 120, 0.16),
        0 2px 0 rgba(255, 255, 255, 0.7) inset;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px 22px;
}

.ssldun-about .ssldun-about-trust-text {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ssldun-about .ssldun-about-trust-text>i.fa-check-circle {
    color: #008cff;
    font-size: 20px;
    filter: drop-shadow(0 2px 6px rgba(0, 120, 255, 0.35));
}

.ssldun-about .ssldun-about-trust-text span {
    font-size: 16px;
    font-weight: 700;
    color: #0066ff;
}

.ssldun-about .ssldun-about-trust-logos {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ssldun-about .ssldun-about-logo-item {
    background: rgba(255, 255, 255, 0.45);
    padding: 5px 18px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.7);
    letter-spacing: 0.2px;
    transition: all 0.2s;
    text-align: center;
    color: #005bdb;
    box-shadow:
        0 4px 10px rgba(0, 91, 219, 0.16),
        0 0 0 1px rgba(0, 140, 255, 0.12) inset;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.ssldun-about .ssldun-about-logo-item:nth-child(1) {
    color: #1962fe;
}

.ssldun-about .ssldun-about-logo-item:nth-child(2) {
    color: #d48c0e;
}

.ssldun-about .ssldun-about-logo-item:nth-child(3) {
    color: #14a854;
}

.ssldun-about .ssldun-about-logo-item:nth-child(4) {
    color: #d93a2a;
}

.ssldun-about .ssldun-about-logo-item:hover {
    /* background: linear-gradient(135deg, #007bff, #00d4c8); */
    /* color: #fff; */
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.58);
    box-shadow: inset 0 1px 0 rgba(0, 123, 255, 0.36),
        0 6px 20px rgba(25, 98, 254, 0.12);
    /* box-shadow:
        0 10px 22px rgba(0, 123, 255, 0.36),
        0 0 16px rgba(0, 210, 255, 0.45); */
}

/* ============================
   入场动画
   ============================ */
@keyframes techRise {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.98);
        filter: blur(2px);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.ssldun-about .ssldun-about-left-block,
.ssldun-about .ssldun-about-right-block,
.ssldun-about .ssldun-about-cert-bar {
    animation: techRise 0.7s cubic-bezier(0.16, 1, 0.2, 1) both;
}

.ssldun-about .ssldun-about-left-block {
    animation-delay: 0.05s;
}

.ssldun-about .ssldun-about-right-block {
    animation-delay: 0.14s;
}

.ssldun-about .ssldun-about-cert-bar {
    animation-delay: 0.24s;
}

/* ============================
   响应式
   ============================ */
@media (max-width: 992px) {
    .ssldun-about {
        padding: 56px 0 60px;
    }

    .ssldun-about .ssldun-about-main-grid {
        grid-template-columns: 1fr;
        gap: 22px;
    }
}

@media (max-width: 768px) {
    .ssldun-about .ssldun-about-badge-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ssldun-about .ssldun-about-cert-bar {
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
    }

    .ssldun-about .ssldun-about-trust-logos {
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: 100%;
    }

    .ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name,
    .ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-company-name {
        font-size: 23px;
        line-height: 1.4;
        flex-wrap: wrap;
    }
}

@media (max-width: 575.98px) {
    .ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-company-name .ssldun-about-logo-glass img {
        width: 120px;
    }

    .ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-sub .ssldun-about-about-item {
        padding: 0;
        border: none;
        box-shadow: none;
        font-size: 12px;
    }

    .ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-sub>i.fa-shield-alt {
        display: none;
    }

    .ssldun-about .ssldun-about-certum-intro-plain .ssldun-about-certum-remark-item {
        font-size: 14px;
    }

    .ssldun-about .ssldun-about-container-custom {
        padding: 0 12px;
    }

    .ssldun-about .ssldun-about-certum-intro-plain {
        padding: 25px 20px;
    }

    .ssldun-about .ssldun-about-badge-glass .ssldun-about-info p,
    .ssldun-about .ssldun-about-trust-text>i.fa-check-circle {
        display: none;
    }

    .ssldun-about .ssldun-about-logo-item {
        justify-content: center
    }

    .ssldun-about .ssldun-about-badge-glass .ssldun-about-info h4 {
        font-size: 16px;
        text-align: center;
    }

    .ssldun-about .ssldun-about-badge-grid {
        gap: 25px 10px;
    }

    .ssldun-about .ssldun-about-badge-glass {
        padding: 19px 12px;
    }

    .ssldun-about .ssldun-about-ssldun-intro-plain {
        padding: 25px 20px;
    }

    .ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-badge-cert {
        font-size: 14px;
        padding: 3px 5px;
    }

    .ssldun-about .ssldun-about-ssldun-intro-plain .ssldun-about-sub {
        font-size: 14px;
    }

    .ssldun-about {
        padding: 30px 0;
    }
}