/* ============================================================
   SDK — Mobile Protection Product Page
   Scoped to body.page-sdk
   ============================================================ */
body.page-sdk{
    --sdk-blue: #2b78f6;
    --sdk-cyan: #22d0ff;
    --sdk-deep: #0a1a3a;
    --sdk-text: #253554;
    --sdk-text-light: #5b78a0;
    --sdk-text-muted: #858a8f;
    --sdk-bg-soft: #f4faff;
    --sdk-grad: linear-gradient(135deg, #2b78f6 0%, #22d0ff 100%);
    --sdk-grad-rev: linear-gradient(135deg, #22d0ff 0%, #2b78f6 100%);
    --sdk-card-shadow: 0 25px 60px -25px rgba(43, 120, 246, .25);

    overflow-x: hidden;
}
body.page-sdk *{ box-sizing: border-box; }
.page-sdk .m12{ width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================================
   1. Banner
   ============================================================ */
.page-sdk .banner_dy{
    position: relative;
    width: 100%;
    min-height: 540px;
    overflow: hidden;
    background-color: #06122e;
    color: #fff;
    isolation: isolate;
    display: flex;
    align-items: center;
}
.page-sdk .banner_dy_bg{
    position: absolute;
    inset: -4%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    animation: sdkBgDrift 24s ease-in-out infinite alternate;
    will-change: transform;
}
@keyframes sdkBgDrift{
    0%   { transform: scale(1.04) translate(0, 0); }
    50%  { transform: scale(1.08) translate(-1.5%, -.8%); }
    100% { transform: scale(1.05) translate(1%, .5%); }
}
.page-sdk .banner_dy_mask{
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(6,18,46,.78) 0%, rgba(6,18,46,.45) 55%, rgba(6,18,46,.25) 100%),
        linear-gradient(180deg, rgba(6,18,46,.25) 0%, rgba(6,18,46,.55) 100%);
    z-index: 1;
}
.page-sdk .banner_dy_grid{
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(34,208,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34,208,255,.06) 1px, transparent 1px);
    background-size: 44px 44px;
    animation: sdkGridMove 30s linear infinite;
    z-index: 2;
    pointer-events: none;
}
@keyframes sdkGridMove{
    0%   { background-position: 0 0, 0 0; }
    100% { background-position: 44px 44px, 44px 44px; }
}
.page-sdk .banner_dy_orb{
    position: absolute;
    width: 620px; height: 620px;
    right: -180px; top: -180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,208,255,.3), transparent 60%);
    filter: blur(40px);
    z-index: 2;
    animation: sdkOrbFloat 14s ease-in-out infinite;
    pointer-events: none;
}
.page-sdk .banner_dy_orb2{
    width: 480px; height: 480px;
    right: auto; top: auto;
    left: 30%; bottom: -180px;
    background: radial-gradient(circle, rgba(43,120,246,.28), transparent 60%);
    animation-duration: 18s;
    animation-direction: reverse;
}
@keyframes sdkOrbFloat{
    0%, 100% { transform: translate(0, 0); }
    50%      { transform: translate(-60px, 40px); }
}
.page-sdk .banner_dy_scan{
    position: absolute;
    inset: 0;
    z-index: 3;
    overflow: hidden;
    pointer-events: none;
}
.page-sdk .banner_dy_scan::before{
    content: "";
    position: absolute;
    top: -50%; left: -30%;
    width: 60%; height: 200%;
    background: linear-gradient(
        110deg,
        transparent 30%,
        rgba(34,208,255,.06) 45%,
        rgba(34,208,255,.18) 50%,
        rgba(34,208,255,.06) 55%,
        transparent 70%
    );
    transform: rotate(8deg);
    animation: sdkScanMove 7s ease-in-out infinite;
}
@keyframes sdkScanMove{
    0%   { transform: translateX(-30%) rotate(8deg); opacity: 0; }
    20%  { opacity: 1; }
    80%  { opacity: 1; }
    100% { transform: translateX(220%) rotate(8deg); opacity: 0; }
}

.page-sdk .banner_dy .m12{ position: relative; z-index: 5; }
.page-sdk .ban_cont3{
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 540px;
    padding: 80px 24px;
    gap: 40px;
}
.page-sdk .ban_cont1_left{
    max-width: 640px;
    flex: 1 1 0;
    min-width: 0;
}
.page-sdk .ban_badge{
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 18px;
    border-radius: 999px;
    background: rgba(255,255,255,.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.18);
    font-size: 12px;
    letter-spacing: 4px;
    color: rgba(255,255,255,.85);
    margin-bottom: 28px;
    font-weight: 500;
}
.page-sdk .ban_badge::before{
    content: "";
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--sdk-cyan);
    box-shadow: 0 0 12px rgba(34,208,255,.85);
    animation: sdkPulse 1.8s ease-in-out infinite;
}
@keyframes sdkPulse{
    0%, 100% { opacity: .55; transform: scale(1); }
    50%      { opacity: 1;   transform: scale(1.45); }
}
.page-sdk .ban_title{
    display: block;
    font-size: clamp(34px, 4.4vw, 56px);
    font-weight: 700;
    line-height: 1.18;
    margin: 0 0 22px;
    background: linear-gradient(135deg, #ffffff 0%, #d3e6ff 60%, #22d0ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -.5px;
    font-family: PingFang SC, Microsoft YaHei, Inter, sans-serif;
}
.page-sdk .ban_left_p{
    font-size: clamp(15px, 1.2vw, 18px);
    line-height: 1.75;
    color: rgba(255,255,255,.78);
    margin: 0 0 36px;
    max-width: 580px;
}
.page-sdk .ban_btnbox{ display: flex; flex-wrap: wrap; gap: 14px; }
.page-sdk .btn_public{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 30px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: .5px;
    transition: transform .35s cubic-bezier(.2,.8,.2,1), background .35s ease, box-shadow .35s ease, border-color .35s ease;
    border: 1px solid transparent;
    cursor: pointer;
    line-height: 1.4;
}
.page-sdk .ban_btn1{
    background: var(--sdk-grad);
    color: #fff;
    box-shadow: 0 16px 35px -10px rgba(43,120,246,.55);
}
.page-sdk .ban_btn1:hover{ transform: translateY(-3px); box-shadow: 0 22px 45px -10px rgba(34,208,255,.6); }
.page-sdk .ban_btn3{
    background: rgba(255,255,255,.1);
    color: #fff;
    border-color: rgba(255,255,255,.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.page-sdk .ban_btn3:hover{ background: rgba(255,255,255,.18); border-color: rgba(34,208,255,.5); transform: translateY(-3px); }
.page-sdk .ban_btn_help{
    background: transparent;
    color: rgba(255,255,255,.85);
    border-color: rgba(255,255,255,.3);
}
.page-sdk .ban_btn_help:hover{ background: rgba(255,255,255,.06); color: #fff; border-color: rgba(255,255,255,.5); transform: translateY(-3px); }

/* ----- Right Side Visual ----- */
.page-sdk .ban_right_visual{
    position: relative;
    flex: 0 0 460px;
    width: 460px;
    height: 460px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.page-sdk .brv_ring{
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(34,208,255,.35);
    animation: sdkSpin 18s linear infinite;
    pointer-events: none;
}
.page-sdk .brv_r1{ border-style: dashed; border-color: rgba(34,208,255,.4); }
.page-sdk .brv_r2{ inset: 50px; border-color: rgba(43,120,246,.4); animation-duration: 14s; animation-direction: reverse; }
.page-sdk .brv_r3{ inset: 100px; border-style: dotted; border-color: rgba(34,208,255,.5); animation-duration: 10s; }
.page-sdk .brv_ring::before{
    content: "";
    position: absolute;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--sdk-cyan);
    top: -5px; left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 16px rgba(34,208,255,.9);
}
.page-sdk .brv_r2::before{ background: var(--sdk-blue); box-shadow: 0 0 16px rgba(43,120,246,.9); top: auto; bottom: -5px; }
.page-sdk .brv_r3::before{ background: var(--sdk-cyan); top: 50%; left: -5px; transform: translateY(-50%); }
@keyframes sdkSpin{ to { transform: rotate(360deg); } }
.page-sdk .brv_glow{
    position: absolute;
    width: 260px; height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,208,255,.45), rgba(43,120,246,.2) 45%, transparent 70%);
    filter: blur(8px);
    animation: sdkGlowPulse 3.5s ease-in-out infinite;
    pointer-events: none;
}
@keyframes sdkGlowPulse{
    0%, 100% { transform: scale(1);   opacity: .65; }
    50%      { transform: scale(1.1); opacity: 1;   }
}
.page-sdk .brv_orbit{
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    animation: sdkSpin 30s linear infinite reverse;
}
.page-sdk .ban_right_img{
    position: relative;
    z-index: 5;
    max-width: 340px;
    height: auto;
    width: auto;
    margin: 0;
    filter:
        drop-shadow(0 25px 40px rgba(34,208,255,.4))
        drop-shadow(0 0 25px rgba(43,120,246,.3));
    animation: sdkFloat 4s ease-in-out infinite;
    will-change: transform;
}
@keyframes sdkFloat{
    0%, 100% { transform: translateY(0)     rotate(0deg); }
    25%      { transform: translateY(-12px) rotate(-1.2deg); }
    50%      { transform: translateY(-18px) rotate(0deg); }
    75%      { transform: translateY(-12px) rotate(1.2deg); }
}
.page-sdk .brv_spark{
    position: absolute;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--sdk-cyan);
    box-shadow: 0 0 14px var(--sdk-cyan);
    z-index: 4;
    pointer-events: none;
    animation: sdkSparkFloat 5s ease-in-out infinite;
}
.page-sdk .brv_spark_1{ top: 18%;  left: 16%; animation-delay: 0s;   }
.page-sdk .brv_spark_2{ top: 25%;  right: 12%; width: 6px; height: 6px; background: var(--sdk-blue); box-shadow: 0 0 12px var(--sdk-blue); animation-delay: 1.2s; }
.page-sdk .brv_spark_3{ bottom: 22%; left: 14%; width: 5px; height: 5px; animation-delay: 2.4s; }
.page-sdk .brv_spark_4{ bottom: 18%; right: 18%; width: 9px; height: 9px; animation-delay: 3.6s; }
@keyframes sdkSparkFloat{
    0%, 100% { transform: translateY(0)    scale(1);   opacity: .8; }
    50%      { transform: translateY(-15px) scale(1.3); opacity: 1; }
}

/* ============================================================
   2. mod_box & common title
   ============================================================ */
.page-sdk .mod_box{
    width: 100%;
    display: block;
    padding: 100px 0 80px;
    background:
        linear-gradient(180deg, rgba(244,250,255,.95) 0%, rgba(255,255,255,.95) 100%),
        url(/style/img/sdk_modbox_bg.png) 50% / cover no-repeat;
    position: relative;
    overflow: hidden;
}
.page-sdk .mod_box::before{
    content: "";
    position: absolute;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(43,120,246,.08), transparent 70%);
    right: -200px; top: 100px;
    filter: blur(60px);
    pointer-events: none;
}
.page-sdk .mod_box::after{
    content: "";
    position: absolute;
    width: 460px; height: 460px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,208,255,.08), transparent 70%);
    left: -180px; bottom: 100px;
    filter: blur(60px);
    pointer-events: none;
}
.page-sdk .mod_box > .m12{ position: relative; z-index: 1; }

.page-sdk .first_title{
    font-size: clamp(28px, 3.2vw, 42px);
    font-weight: 700;
    background: linear-gradient(135deg, #0a1a3a 0%, #2b78f6 90%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin: 0;
    line-height: 1.3;
    display: block;
    text-align: center;
    font-family: PingFang SC, Microsoft YaHei, Inter, sans-serif;
}
.page-sdk .first_title::after{
    content: "";
    display: block;
    width: 70px; height: 4px;
    background: var(--sdk-grad);
    border-radius: 2px;
    margin: 18px auto 0;
    box-shadow: 0 6px 14px -3px rgba(43,120,246,.4);
}

/* ============================================================
   3. mod1 — Product Features (2 columns, 2 rows of <li>)
   ============================================================ */
.page-sdk .mod1, .page-sdk .mod2{
    padding-bottom: 60px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 50px;
}
.page-sdk .mod1 > .m12{
    padding: 0;
}
.page-sdk .mod1_list{
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.page-sdk .mod1_list li{
    display: flex;
    height: auto;
    min-height: 200px;
    align-items: stretch;
    gap: 24px;
    width: 100%;
    list-style: none;
}
.page-sdk .mod1_list_pub{
    display: flex;
    padding: 32px 36px;
    flex-direction: column;
    gap: 14px;
    flex: 1 1 0;
    min-width: 0;
    border: 1px solid rgba(255,255,255,.7);
    background: linear-gradient(135deg, rgba(255,255,255,.85) 0%, rgba(243,250,255,.7) 100%);
    box-shadow: 0 20px 40px -20px rgba(43,120,246,.18);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 18px;
    transition: transform .45s cubic-bezier(.2,.8,.2,1),
                box-shadow .45s ease,
                border-color .45s ease,
                background .45s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}
.page-sdk .mod1_list_pub::before{
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 0%; height: 3px;
    background: var(--sdk-grad);
    transition: width .5s ease;
    z-index: 2;
}
.page-sdk .mod1_list_pub:hover{
    transform: translateY(-8px);
    border-color: rgba(34,208,255,.4);
    box-shadow: 0 35px 70px -20px rgba(43,120,246,.35);
    background: linear-gradient(135deg, rgba(255,255,255,.95) 0%, rgba(229,243,255,.9) 100%);
}
.page-sdk .mod1_list_pub:hover::before{ width: 100%; }
.page-sdk .mod1_listtext{
    display: flex;
    align-items: flex-start;
    gap: 22px;
    width: 100%;
}
.page-sdk .mod1_listtext > svg{
    flex-shrink: 0;
    width: 60px; height: 60px;
    transition: transform .5s ease;
}
.page-sdk .mod1_list_pub:hover .mod1_listtext > svg{
    transform: scale(1.08) rotate(-4deg);
}
.page-sdk .mod1_listtext dl{
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    flex: 1 1 0;
    min-width: 0;
    margin: 0;
}
.page-sdk .mod1_listtext dl dt{
    color: var(--sdk-text);
    font-family: PingFang SC, Microsoft YaHei, Inter, sans-serif;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
    transition: color .35s ease;
}
.page-sdk .mod1_list_pub:hover .mod1_listtext dl dt{ color: var(--sdk-blue); }
.page-sdk .mod1_listtext dl dd{
    color: var(--sdk-text-muted);
    text-align: justify;
    font-family: PingFang SC, Microsoft YaHei, Inter, sans-serif;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.75;
    margin: 0;
}

/* ============================================================
   4. SDK介入步骤 — Animated Steps with cycling image
   ============================================================ */
.page-sdk .good-content{
    width: 100%;
    max-width: 1100px;
    margin: 60px auto 0;
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 50px;
    background: linear-gradient(135deg, #ffffff 0%, #f4faff 100%);
    border-radius: 24px;
    border: 1px solid rgba(43,120,246,.08);
    box-shadow: 0 30px 70px -25px rgba(43,120,246,.25);
    position: relative;
    overflow: hidden;
}
.page-sdk .good-content::before{
    content: "";
    position: absolute;
    width: 300px; height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,208,255,.1), transparent 70%);
    right: -100px; top: -100px;
    filter: blur(50px);
    pointer-events: none;
}
.page-sdk .good-content::after{ content: none; }
.page-sdk .good-content .img-box{
    float: none;
    flex: 0 0 460px;
    width: 460px;
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(135deg, #f4faff 0%, #e8f4ff 100%);
    padding: 20px;
    position: relative;
    z-index: 1;
}
.page-sdk .good-content .img-box img{
    width: 100%;
    height: auto;
    display: block;
    transition: opacity .5s ease, transform .5s ease;
    animation: sdkImgFade 1s ease-in-out;
}
@keyframes sdkImgFade{
    from { opacity: .4; transform: scale(.96); }
    to   { opacity: 1;  transform: scale(1);   }
}
.page-sdk .detail{
    float: none;
    flex: 1 1 0;
    min-width: 0;
    margin: 0;
    padding-left: 28px;
    position: relative;
    z-index: 1;
}
.page-sdk .detail div{
    position: relative;
    margin-bottom: 22px;
    padding: 14px 18px;
    border-radius: 10px;
    transition: background .35s ease, transform .35s ease;
}
.page-sdk .detail div:hover{
    background: rgba(43,120,246,.05);
    transform: translateX(4px);
}
.page-sdk .detail div:last-child{ margin-bottom: 0; }

/* Numbered dot indicator on left */
.page-sdk .detail div::before{
    position: absolute;
    left: -24px; top: 20px;
    content: "";
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--sdk-grad);
    box-shadow: 0 0 10px rgba(43,120,246,.5);
    z-index: 2;
}
.page-sdk .detail div::after{
    position: absolute;
    left: -28px; top: 16px;
    content: "";
    width: 16px; height: 16px;
    border-radius: 50%;
    background: rgba(43,120,246,.18);
    animation: sdkStepPulse 2.4s ease-in-out infinite;
    z-index: 1;
}
.page-sdk .detail div:nth-child(2)::after{ animation-delay: .3s; }
.page-sdk .detail div:nth-child(3)::after{ animation-delay: .6s; }
.page-sdk .detail div:nth-child(4)::after{ animation-delay: .9s; }
.page-sdk .detail div:nth-child(5)::after{ animation-delay: 1.2s; }
.page-sdk .detail div:nth-child(6)::after{ animation-delay: 1.5s; }
@keyframes sdkStepPulse{
    0%, 100% { transform: scale(1);    opacity: .6; }
    50%      { transform: scale(1.5);  opacity: 1;  }
}

/* Connecting vertical line through all steps */
.page-sdk .detail::before{
    content: "";
    position: absolute;
    left: -20px; top: 24px;
    bottom: 24px;
    width: 2px;
    background: linear-gradient(180deg, rgba(43,120,246,.3), rgba(34,208,255,.3));
    border-radius: 1px;
}

.page-sdk .detail p{
    width: auto;
    margin: 0;
    font-family: PingFang SC, Microsoft YaHei, sans-serif;
}
.page-sdk .detail p:nth-of-type(1){
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 6px;
    color: var(--sdk-deep);
}
.page-sdk .detail p:nth-of-type(2){
    color: var(--sdk-text-light);
    font-size: 13.5px;
    line-height: 1.7;
    font-weight: 400;
}

/* ============================================================
   5. mod3 — VS Comparison (JUDUN vs Others)
   ============================================================ */
.page-sdk .mod3{
    width: 100%;
    background:
        linear-gradient(135deg, #0a1a3a 0%, #1a3a7a 50%, #0a1a3a 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 32px 0 rgba(210, 217, 236, .3);
    mix-blend-mode: normal;
}
.page-sdk .mod3::before{
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(34,208,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34,208,255,.06) 1px, transparent 1px);
    background-size: 44px 44px;
    pointer-events: none;
    z-index: 0;
}
.page-sdk .mod3::after{
    content: "";
    position: absolute;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,208,255,.15), transparent 60%);
    right: -200px; top: -200px;
    filter: blur(50px);
    pointer-events: none;
    z-index: 0;
}
.page-sdk .mod3_cont{
    width: 100%;
    background: transparent;
    text-align: center;
    padding: 100px 0;
    position: relative;
    z-index: 1;
}
.page-sdk .mod3_cont .first_title{
    background: linear-gradient(135deg, #ffffff 0%, #d3e6ff 60%, #22d0ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.page-sdk .mod3_cont ul{
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.page-sdk .mod3_vstitle{
    display: flex;
    width: 100%;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}
.page-sdk .vs_title_text{
    color: #fff;
    text-align: center;
    font-family: PingFang SC, Microsoft YaHei UI, sans-serif;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    display: flex;
    padding: 18px 40px;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex: 1 1 0;
    min-width: 0;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(34,208,255,.3);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    letter-spacing: 1px;
}
.page-sdk .vs_title_text:first-child{
    background: linear-gradient(135deg, rgba(43,120,246,.25) 0%, rgba(34,208,255,.18) 100%);
    border-color: rgba(34,208,255,.5);
    box-shadow: 0 0 20px rgba(34,208,255,.2);
    color: #22d0ff;
    font-weight: 800;
    letter-spacing: 2px;
}

.page-sdk .mod3_vslist{
    display: flex;
    width: 100%;
    align-items: stretch;
    gap: 20px;
    list-style: none;
}
.page-sdk .vs_list_pub{
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 22px 24px;
    gap: 14px;
    flex: 1 1 0;
    min-width: 0;
    align-self: stretch;
    background: #fff;
    color: var(--sdk-deep);
    font-family: PingFang SC, Microsoft YaHei, sans-serif;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    border-radius: 12px;
    border: 1px solid rgba(43,120,246,.08);
    transition: transform .4s ease, box-shadow .4s ease, background .4s ease;
    text-align: center;
}
.page-sdk .vs_list_l{
    background: linear-gradient(135deg, #ffffff 0%, #f4faff 100%);
    font-weight: 600;
}
.page-sdk .vs_list_l img{
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}
.page-sdk .vs_list_m{
    display: flex;
    width: 281px;
    max-width: 281px;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.page-sdk .vs_list_m span{
    display: block;
    min-width: 100px;
    text-align: center;
    font-family: PingFang SC, Inter, sans-serif;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    color: #fff;
    opacity: .9;
    letter-spacing: 1px;
}
.page-sdk .vs_line{
    width: 64px;
    height: 2px;
    position: relative;
    overflow: hidden;
    border-radius: 1px;
    background: rgba(255,255,255,.15);
}
.page-sdk .vs_line::before{
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--sdk-cyan));
    opacity: .5;
    transition: opacity .5s, transform .5s;
    transform: translateX(-30%);
}
.page-sdk .mod3_vslist:hover{ cursor: pointer; }
.page-sdk .mod3_vslist:hover .vs_line::before{
    opacity: 1;
    transform: translateX(0);
}
.page-sdk .mod3_vslist:hover .vs_list_m span{ opacity: 1; color: var(--sdk-cyan); text-shadow: 0 0 10px rgba(34,208,255,.4); }
.page-sdk .mod3_vslist:hover .vs_list_pub{
    transform: translateY(-3px);
    box-shadow: 0 18px 35px -10px rgba(43,120,246,.4);
}
.page-sdk .mod3_vslist:hover .vs_list_l{
    background: linear-gradient(135deg, #ffffff 0%, #e8f4ff 100%);
}

/* ============================================================
   6. Responsive
   ============================================================ */
@media (max-width: 1280px){
    .page-sdk .banner_dy{ min-height: 480px; }
    .page-sdk .ban_cont3{ min-height: 480px; padding: 70px 24px; gap: 30px; }
    .page-sdk .ban_right_visual{ flex: 0 0 380px; width: 380px; height: 380px; }
    .page-sdk .brv_r2{ inset: 40px; }
    .page-sdk .brv_r3{ inset: 80px; }
    .page-sdk .ban_right_img{ max-width: 280px; }
    .page-sdk .brv_glow{ width: 220px; height: 220px; }
    .page-sdk .good-content{ gap: 40px; padding: 40px; }
    .page-sdk .good-content .img-box{ flex: 0 0 380px; width: 380px; }
}

@media (max-width: 1024px){
    .page-sdk .ban_right_visual{ flex: 0 0 320px; width: 320px; height: 320px; }
    .page-sdk .brv_r2{ inset: 30px; }
    .page-sdk .brv_r3{ inset: 70px; }
    .page-sdk .ban_right_img{ max-width: 220px; }
    .page-sdk .brv_glow{ width: 180px; height: 180px; }
    .page-sdk .mod1_list li{ flex-direction: column; gap: 16px; min-height: 0; }
    .page-sdk .good-content{ flex-direction: column; gap: 30px; }
    .page-sdk .good-content .img-box{ flex: 0 0 auto; width: 100%; max-width: 480px; }
    .page-sdk .vs_list_m{ width: 200px; }
}

@media (max-width: 880px){
    .page-sdk .ban_cont3{
        flex-direction: column;
        align-items: flex-start;
        min-height: auto;
        padding: 60px 20px;
    }
    .page-sdk .ban_right_visual{
        flex: 0 0 auto;
        width: 280px; height: 280px;
        margin: 0 auto;
    }
    .page-sdk .brv_r2{ inset: 30px; }
    .page-sdk .brv_r3{ inset: 60px; }
    .page-sdk .ban_right_img{ max-width: 180px; }
    .page-sdk .brv_glow{ width: 160px; height: 160px; }
    .page-sdk .mod3_vslist{ flex-direction: column; gap: 12px; }
    .page-sdk .mod3_vstitle{ flex-wrap: wrap; gap: 12px; }
    .page-sdk .vs_list_m{ width: 100%; max-width: 100%; padding: 8px 0; }
    .page-sdk .vs_line{ width: 80px; }
}

@media (max-width: 640px){
    .page-sdk .ban_badge{ padding: 6px 14px; font-size: 11px; letter-spacing: 3px; margin-bottom: 22px; }
    .page-sdk .btn_public{ padding: 11px 22px; font-size: 13px; }
    .page-sdk .ban_right_visual{ width: 240px; height: 240px; }
    .page-sdk .brv_r2{ inset: 24px; }
    .page-sdk .brv_r3{ inset: 50px; }
    .page-sdk .ban_right_img{ max-width: 150px; }
    .page-sdk .brv_glow{ width: 130px; height: 130px; }
    .page-sdk .mod_box{ padding: 60px 0; }
    .page-sdk .mod1_list_pub{ padding: 22px 24px; }
    .page-sdk .mod1_listtext{ gap: 16px; }
    .page-sdk .mod1_listtext > svg{ width: 48px; height: 48px; }
    .page-sdk .good-content{ padding: 28px 20px; gap: 24px; }
    .page-sdk .detail{ padding-left: 24px; }
    .page-sdk .mod3_cont{ padding: 60px 0; }
    .page-sdk .vs_title_text{ padding: 14px 20px; font-size: 15px; }
    .page-sdk .vs_list_pub{ padding: 18px 16px; font-size: 14px; }
}