*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-padding-top: 86px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: #0F0E17;
    color: #FFFFFF;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

/* ======================== 通用工具类 ======================== */
.dd-rq {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.dd-qk {
    padding: 7rem 0;
    position: relative;
}

.dd-qk-tb {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 5rem;
}

.dd-qk-bq {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.9rem;
    background: transparent;
    border: 1px solid rgba(200, 200, 216, 0.45);
    border-radius: 9999px;
    color: #C8C8D8;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.85rem;
    letter-spacing: 0.08em;
}

.dd-qk-bt {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.dd-qk-fbt {
    font-size: 1.05rem;
    color: #C8C8D8;
    line-height: 1.8;
}

/* 按钮 */
.dd-an {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border-radius: 9999px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    cursor: pointer;
}

.dd-an-z {
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(26, 115, 231, 0.4);
}

.dd-an-z:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(26, 115, 231, 0.5);
}

.dd-an-bk {
    background: transparent;
    color: #FFFFFF;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
}

.dd-an-bk:hover {
    border-color: #673ab7;
    background: rgba(26, 115, 231, 0.1);
}

.dd-an-x {
    padding: 0.6rem 1.4rem;
    font-size: 0.9rem;
}

.dd-an-l {
    background: #fff;
    color: #0F0E17;
}

.dd-an-l:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.dd-an-l-bk {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.dd-an-l-bk:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* ======================== Header / 导航栏 ======================== */
.dd-tb {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 86px;
    z-index: 1000;
    padding: 0.85rem 0;
    background: linear-gradient(180deg, rgba(15, 14, 23, 0.88) 0%, rgba(15, 14, 23, 0.5) 72%, rgba(15, 14, 23, 0) 100%);
    display: flex;
    align-items: center;
    pointer-events: none;
}

.dd-dh-rq {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 62px;
    padding: 0.45rem 0.55rem 0.45rem 0.7rem;
    background: rgba(20, 20, 36, 0.68);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 9999px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(26px) saturate(1.2);
    -webkit-backdrop-filter: blur(26px) saturate(1.2);
    pointer-events: auto;
    overflow: hidden;
}

.dd-dh-rq::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        radial-gradient(circle at 12% 50%, rgba(26, 115, 231, 0.22), transparent 28%),
        radial-gradient(circle at 88% 50%, rgba(103, 58, 183, 0.2), transparent 30%);
    opacity: 0.8;
    pointer-events: none;
}

.dd-bz {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.4rem;
    font-weight: 800;
}

.dd-tb .dd-bz {
    position: relative;
    z-index: 1;
    gap: 0.65rem;
    padding: 0.38rem 0.9rem 0.38rem 0.42rem;
}

.dd-bz-tb {
    color: #673ab7;
    font-size: 1.3rem;
}

.dd-bz-wz {
    color: #FFFFFF;
    letter-spacing: 0;
}

.dd-bz-qd {
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dd-bz-tp {
    height: 38px;
    width: auto;
    display: block;
}

.dd-tb .dd-bz-tp {
    height: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 22px rgba(26, 115, 231, 0.25);
}

.dd-bz-yj .dd-bz-tp {
    height: 44px;
}

/* 移动端专用下载按钮 - 桌面端隐藏 */
.dd-an-xz-sj {
    display: none;
}

.dd-dh-cd {
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    justify-content: center;
}

.dd-dh-lb {
    display: flex;
    gap: 0.35rem;
    padding: 0.32rem;
    border-radius: 9999px;
}

.dd-dh-lj {
    font-size: 0.95rem;
    color: #C8C8D8;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 0.95rem;
    border-radius: 9999px;
}

.dd-dh-lj::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #673ab7;
    opacity: 0;
    transform: translateX(-50%) scale(0.6);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-dh-lj:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.08);
}

.dd-dh-lj:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

.dd-dh-cz {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dd-dh-cz .dd-an-z {
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 10px 26px rgba(26, 115, 231, 0.32);
}

/* ======================== Hero 首屏 ======================== */
.dd-sp {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(86px + 2rem) 0 5rem;
    background: linear-gradient(160deg, #0F0E17 0%, #1A1A2E 50%, #1E1E32 100%);
    position: relative;
    overflow: hidden;
}

.dd-sp-bj {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.dd-sp-gb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: blobFloat 8s ease-in-out infinite;
}

.dd-gb-1 {
    width: 500px;
    height: 500px;
    background: #1a73e7;
    top: -100px;
    left: -100px;
}

.dd-gb-2 {
    width: 400px;
    height: 400px;
    background: #673ab7;
    bottom: -50px;
    right: 10%;
    animation-delay: 2s;
}

.dd-gb-3 {
    width: 350px;
    height: 350px;
    background: #00CEC9;
    top: 40%;
    right: -50px;
    animation-delay: 4s;
    opacity: 0.15;
}

@keyframes blobFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.dd-sp-rq {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.dd-sp-nr {
    position: relative;
    flex: 1;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.dd-sp-bq {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.95rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #C8C8D8;
    border-radius: 9999px;
    font-size: 0.82rem;
    margin-bottom: 1.25rem;
}

.dd-sp-bt {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.dd-jb-wz {
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dd-sp-ms {
    font-size: 1.1rem;
    color: #C8C8D8;
    line-height: 1.8;
    margin-bottom: 0.9rem;
    max-width: 560px;
}

.dd-sp-fg {
    width: 72px;
    height: 3px;
    margin-bottom: 1.6rem;
    border-radius: 9999px;
    background: linear-gradient(90deg, #1a73e7 0%, #673ab7 100%);
}

.dd-sp-an {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero 视觉区域 */
.dd-sp-sj {
    position: relative;
    width: 360px;
    justify-self: end;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dd-sp-js {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.dd-js-tx {
    position: absolute;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* 角色头像 - 400x400px */
.dd-js-tx-1 {
    background: url('../images/dadyai-app-screenshot-01.jpg') center/cover no-repeat;
    top: 5%;
    left: 0;
    animation: floatAvatar 4s ease-in-out infinite;
}

.dd-js-tx-2 {
    background: url('../images/dadyai-app-screenshot-02.jpg') center/cover no-repeat;
    top: 10%;
    right: 5%;
    animation: floatAvatar 4s ease-in-out infinite 1s;
}

.dd-js-tx-3 {
    background: url('../images/dadyai-app-screenshot-03.jpg') center/cover no-repeat;
    bottom: 15%;
    left: 8%;
    animation: floatAvatar 4s ease-in-out infinite 2s;
}

.dd-js-tx-4 {
    background: url('../images/dadyai-app-screenshot-04.jpg') center/cover no-repeat;
    bottom: 5%;
    right: 0;
    animation: floatAvatar 4s ease-in-out infinite 3s;
}

@keyframes floatAvatar {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 聊天演示框 */
.dd-lt-ys {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: none;
    min-height: 650px;
    padding: 1.1rem 0.75rem 1.35rem;
    background: linear-gradient(145deg, rgba(12, 14, 24, 0.96), rgba(34, 34, 54, 0.92));
    backdrop-filter: blur(24px) saturate(1.2);
    -webkit-backdrop-filter: blur(24px) saturate(1.2);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 42px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.48), inset 0 0 0 8px rgba(255, 255, 255, 0.045);
    overflow: hidden;
}

.dd-lt-ys::before {
    content: '';
    position: absolute;
    top: 0.72rem;
    left: 50%;
    width: 92px;
    height: 24px;
    border-radius: 9999px;
    background: #090A12;
    box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.08);
    transform: translateX(-50%);
    z-index: 3;
}

.dd-lt-ys::after {
    content: '';
    position: absolute;
    bottom: 0.62rem;
    left: 50%;
    width: 116px;
    height: 4px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.42);
    transform: translateX(-50%);
    z-index: 3;
}

.dd-lt-tb {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 3rem 1rem 0.85rem;
    background: linear-gradient(180deg, rgba(26, 115, 231, 0.22), rgba(26, 115, 231, 0.04));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 0;
    border-radius: 32px 32px 0 0;
}

.dd-lt-tx {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    flex-shrink: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08), 0 10px 24px rgba(26, 115, 231, 0.28);
}

.dd-lt-tx img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dd-lt-mc {
    display: flex;
    flex-direction: column;
}

.dd-lt-mc strong {
    font-size: 1rem;
    letter-spacing: 0;
}

.dd-lt-mc span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: #00CEC9;
}

.dd-lt-mc span i {
    font-size: 0.55rem;
    line-height: 1;
}

.dd-lt-zt {
    position: relative;
    z-index: 1;
    min-height: 405px;
    padding: 1rem 1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background:
        radial-gradient(circle at 18% 10%, rgba(26, 115, 231, 0.2), transparent 30%),
        radial-gradient(circle at 82% 24%, rgba(103, 58, 183, 0.18), transparent 28%),
        linear-gradient(180deg, #101224 0%, #15172B 100%);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.dd-lt-xx {
    max-width: 82%;
    padding: 0.78rem 0.95rem;
    border-radius: 18px;
    font-size: 0.86rem;
    line-height: 1.6;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.dd-lt-zn {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.92);
    color: #15172B;
    border-bottom-left-radius: 6px;
}

.dd-lt-yh {
    align-self: flex-end;
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    color: #fff;
    border-bottom-right-radius: 6px;
}

.dd-lt-sr {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem;
    padding: 0.85rem 1rem 1.35rem;
    background: rgba(16, 18, 36, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 0;
    border-radius: 0 0 32px 32px;
}

.dd-lt-sr span {
    flex: 1;
    min-height: 38px;
    display: flex;
    align-items: center;
    padding: 0 0.9rem;
    color: #8888A0;
    font-size: 0.86rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
}

.dd-lt-fs {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 10px 22px rgba(26, 115, 231, 0.28);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-lt-fs i {
    font-size: 1.1rem;
    line-height: 1;
}

.dd-lt-fs:hover {
    transform: scale(1.1);
}

/* ======================== 产品展示 ======================== */
.dd-zs {
    background: #1A1A2E;
}

.dd-zs-gz {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.dd-zs-x {
    text-align: center;
}

/* 产品截图 - 竖版手机截图展示 */
.dd-zs-tp {
    width: 100%;
    aspect-ratio: 9 / 16;
    border-radius: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.dd-zs-yt {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 底部渐变遮罩 + 标题文字 */
.dd-zs-zz {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 50%, rgba(15, 14, 23, 0.9) 100%);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.dd-zs-sm {
    color: #F0EFFF;
    font-size: 1rem;
    font-weight: 600;
}

.dd-zs-x:hover .dd-zs-tp {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* ======================== 核心功能 ======================== */
.dd-gn {
    background: #1A1A2E;
}

.dd-gn-gz {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.dd-gn-kp {
    background: #1E1E32;
    border-radius: 24px;
    padding: 3rem 1.5rem;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.dd-gn-kp:hover {
    transform: translateY(-6px);
    background: #25254A;
    border-color: rgba(26, 115, 231, 0.3);
    box-shadow: 0 0 40px rgba(26, 115, 231, 0.3);
}

.dd-gn-tb {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: rgba(26, 115, 231, 0.12);
    border-radius: 16px;
}

.dd-gn-tb i {
    line-height: 1;
}

.dd-gn-bt {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.dd-gn-ms {
    font-size: 0.9rem;
    color: #C8C8D8;
    line-height: 1.7;
}

/* ======================== 用户评价 ======================== */
.dd-pj {
    background: #1A1A2E;
}

.dd-pj-gz {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.dd-pj-kp {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(30, 30, 50, 0.92), rgba(22, 22, 38, 0.92));
    border-radius: 18px;
    padding: 1.35rem;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.dd-pj-kp::before {
    content: '';
    position: absolute;
    top: 0;
    left: 1.35rem;
    right: 1.35rem;
    height: 2px;
    background: linear-gradient(90deg, #1a73e7 0%, #673ab7 100%);
    opacity: 0.85;
}

.dd-pj-kp:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.dd-pj-yh {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 1rem;
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 1.35rem;
    line-height: 1;
}

.dd-pj-yh i {
    line-height: 1;
}

.dd-pj-wz {
    flex: 1;
    font-size: 0.92rem;
    color: #C8C8D8;
    line-height: 1.85;
    margin-bottom: 1.35rem;
}

.dd-pj-zz {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: 48px;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.dd-pj-xx {
    display: flex;
    flex-direction: column;
}

.dd-pj-xx strong {
    font-size: 0.9rem;
    color: #FFFFFF;
    line-height: 1.3;
}

.dd-pj-xx span {
    font-size: 0.75rem;
    color: #8888A0;
}

/* ======================== FAQ 常见问题 ======================== */
.dd-wt {
    background: #0F0E17;
}

.dd-wt-lb {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dd-wt-x {
    background: #1E1E32;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-wt-x:hover {
    border-color: rgba(26, 115, 231, 0.2);
}

.dd-wt-x.dd-jh {
    border-color: rgba(26, 115, 231, 0.4);
    box-shadow: 0 0 40px rgba(26, 115, 231, 0.3);
}

.dd-wt-tw {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    color: #FFFFFF;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-wt-tw:hover {
    color: #673ab7;
}

.dd-wt-tb {
    font-size: 1.5rem;
    color: #673ab7;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    margin-left: 1rem;
    line-height: 1;
}

.dd-wt-tb i {
    display: block;
    line-height: 1;
}

.dd-wt-x.dd-jh .dd-wt-tb {
    transform: rotate(45deg);
}

.dd-wt-da {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.5rem;
}

.dd-wt-x.dd-jh .dd-wt-da {
    max-height: 300px;
    padding: 0 1.5rem 1.2rem;
}

.dd-wt-da p {
    font-size: 0.95rem;
    color: #C8C8D8;
    line-height: 1.8;
}

/* ======================== 页脚 ======================== */
.dd-yj {
    background: #1A1A2E;
    padding: 5rem 0 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.dd-yj-tb {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 5rem;
    margin-bottom: 3rem;
}

.dd-yj-pp .dd-bz {
    margin-bottom: 1rem;
}

.dd-yj-ms {
    font-size: 0.9rem;
    color: #8888A0;
    line-height: 1.7;
    max-width: 300px;
}

.dd-yj-lj {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.dd-yj-l h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.dd-yj-l ul {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.dd-yj-l a {
    font-size: 0.88rem;
    color: #8888A0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-yj-l a:hover {
    color: #673ab7;
}

.dd-yj-db {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.82rem;
    color: #5A5A72;
}

.dd-xs {
    opacity: 1;
    transform: translateY(0);
}

/* ======================== 响应式 - 平板 (max-width: 992px) ======================== */
@media (max-width: 992px) {
    .dd-qk {
        padding: 5rem 0;
    }

    .dd-qk-tb {
        margin: 0 auto 4rem;
    }

    .dd-sp {
        padding: calc(86px + 2rem) 0 4rem;
    }

    .dd-sp-bt {
        font-size: 2.6rem;
    }

    .dd-sp-rq {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .dd-sp-nr {
        max-width: 720px;
        align-items: center;
        margin: 0 auto;
    }

    .dd-sp-ms {
        max-width: 620px;
    }

    .dd-sp-fg {
        margin-left: auto;
        margin-right: auto;
    }

    .dd-sp-an {
        justify-content: center;
    }

    .dd-sp-sj {
        width: 100%;
        max-width: 400px;
        justify-self: center;
        margin: 0 auto;
    }

    .dd-zs-gz {
        grid-template-columns: repeat(2, 1fr);
        max-width: 600px;
        margin: 0 auto;
    }

    .dd-gn-gz {
        grid-template-columns: repeat(2, 1fr);
    }

    .dd-pj-gz {
        grid-template-columns: repeat(2, 1fr);
    }

    .dd-qk-bt {
        font-size: 2rem;
    }

    .dd-yj-tb {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .dd-yj {
        padding: 4rem 0 1.5rem;
    }

    .dd-yj-ms {
        max-width: 100%;
    }
}

/* ======================== 响应式 - 移动端 (max-width: 768px) ==================== */
@media (max-width: 768px) {
    .dd-qk {
        padding: 4rem 0;
    }

    .dd-qk-tb {
        margin: 0 auto 3rem;
    }

    .dd-sp {
        padding: calc(78px + 2rem) 0 3rem;
    }

    .dd-sp-sj.dd-xs {
        display: none;
    }

    .dd-gn-kp,
    .dd-pj-kp {
        padding: 1.25rem;
    }

    .dd-rq {
        padding: 0 1rem;
    }

    .dd-tb {
        height: auto;
        min-height: 78px;
        padding: 0.6rem 0;
    }

    .dd-dh-rq {
        min-height: 58px;
        flex-wrap: nowrap;
        gap: 0.5rem;
        padding: 0.42rem 0.5rem 0.42rem 0.55rem;
        border-radius: 24px;
    }

    .dd-tb .dd-bz {
        min-width: 0;
        padding: 0.3rem 0.65rem 0.3rem 0.32rem;
    }

    .dd-tb .dd-bz-tp {
        height: 34px;
        border-radius: 10px;
    }

    .dd-tb .dd-bz-wz {
        font-size: 1.05rem;
    }

    .dd-dh-cd {
        display: none;
    }

    .dd-dh-cz .dd-an-x {
        display: none;
    }

    .dd-an-xz-sj {
        display: inline-flex;
        padding: 0.55rem 0.9rem;
        font-size: 0.82rem;
        flex-shrink: 0;
    }

    .dd-sp-bt {
        font-size: 2.6rem;
    }

    .dd-sp-ms {
        font-size: 1rem;
    }

    .dd-sp-an {
        flex-direction: column;
        width: 100%;
    }

    .dd-sp-an .dd-an {
        width: 100%;
    }

    .dd-sp-sj {
        width: 100%;
        max-width: 100%;
    }

    .dd-js-tx {
        width: 55px;
        height: 55px;
    }

    .dd-gn-gz {
        grid-template-columns: 1fr;
    }

    .dd-pj-gz {
        grid-template-columns: 1fr;
    }

    .dd-qk-bt {
        font-size: 1.7rem;
    }

    .dd-qk-fbt {
        font-size: 0.95rem;
    }

    .dd-yj-lj {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .dd-yj-db {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .dd-yj {
        padding: 3rem 0 1.5rem;
    }

    .dd-yj-tb {
        gap: 2rem;
        margin-bottom: 2rem;
    }

    .dd-wt-tw {
        font-size: 0.95rem;
        padding: 1rem 1.2rem;
    }

    .dd-wt-da p {
        font-size: 0.88rem;
    }

    .dd-zs-gz {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .dd-zs-tp {
        aspect-ratio: 9 / 16;
    }
}

/* ======================== 响应式 - 小屏移动端 (max-width: 480px) ==================== */
@media (max-width: 480px) {
    .dd-sp-bt {
        font-size: 1.7rem;
    }

    .dd-sp-bq {
        font-size: 0.78rem;
    }

    .dd-qk-bt {
        font-size: 1.5rem;
    }

    .dd-bz {
        font-size: 1.2rem;
    }

    .dd-lt-ys {
        max-width: 100%;
    }

    .dd-js-tx {
        width: 45px;
        height: 45px;
    }
}

/* ======================== 法律页面（隐私政策/服务条款）======================== */
.dd-fl-qk {
    background: #0F0E17;
    min-height: 100vh;
}

.dd-fl-nr {
    max-width: 800px;
    margin: 0 auto;
    color: #C8C8D8;
    line-height: 1.9;
}

.dd-fl-bt {
    font-size: 2.2rem;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #1a73e7 0%, #673ab7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dd-fl-gx {
    font-size: 0.9rem;
    color: #8888A0;
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dd-fl-xbt {
    font-size: 1.25rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.dd-fl-nr p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.dd-fl-lb {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1rem;
}

.dd-fl-lb li {
    margin-bottom: 0.6rem;
    font-size: 0.92rem;
    color: #C8C8D8;
}

.dd-fl-lb strong {
    color: #FFFFFF;
}

.dd-fl-lj {
    color: #673ab7;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dd-fl-lj:hover {
    color: #673ab7;
}

/* 法律页面移动端适配 */
@media (max-width: 768px) {
    .dd-fl-bt {
        font-size: 1.7rem;
    }

    .dd-fl-xbt {
        font-size: 1.1rem;
        margin-top: 2rem;
    }

    .dd-fl-gx {
        margin-bottom: 2rem;
    }

    .dd-fl-nr p,
    .dd-fl-lb li {
        font-size: 0.88rem;
    }
}



/*投诉按钮，严禁改动！！！*/
.report-floating {
    position: fixed;
    right: 20px;
    bottom: 24px;
    z-index: 100;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 13px;
    min-height: 44px;
    padding: 0 16px;
    border-radius: 999px;
    background: #2aa0ea;
    color: #fff;
}

.report-floating i {
    font-size: 18px;
    line-height: 1;
}