:root {
    --pink: #FC88DC;
    --blue: #88B9FC;
    --main-gradient: linear-gradient(135deg, var(--pink) 0%, var(--blue) 100%);
    --bg-light: #F6F9F9;
    --pink-20: rgba(252, 136, 220, 0.2);
    --blue-20: rgba(136, 185, 252, 0.2);
    --pink-30: rgba(252, 136, 220, 0.3);
    --blue-30: rgba(136, 185, 252, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; cursor: none; }
html { overflow-x: hidden; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: #fff; color: #333; overflow-x: hidden; scroll-behavior: smooth; }

/* --- Custom Cursor --- */
.cursor-dot,
.cursor-outline {
    position: fixed;
    top: 0;
    left: 0;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 9999;
    pointer-events: none;
}

.cursor-dot {
    width: 8px;
    height: 8px;
    background-color: var(--blue);
}

.cursor-outline {
    width: 40px;
    height: 40px;
    border: 2px solid var(--pink);
    transition: width 0.2s, height 0.2s, background-color 0.2s;
}

body:hover .cursor-dot,
body:hover .cursor-outline {
    opacity: 1;
}

.cursor-hover {
    width: 60px;
    height: 60px;
    background-color: rgba(252, 136, 220, 0.1);
    border-color: transparent;
}

#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--main-gradient);
    z-index: 10000;
    transition: width 0.1s;
}

/* --- 导航栏 --- */
.header {
    height: 80px; display: flex; align-items: center; padding: 0 5%;
    position: fixed; top: 0; width: 100%; background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px); z-index: 1000; border-bottom: 1px solid rgba(0,0,0,0.05);
}

.logo-text {
    font-size: 32px; font-weight: 900; font-style: italic; letter-spacing: -1px;
    background: var(--main-gradient); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; padding-right: 15px;
    display: inline-block;
}

.header-actions {
    margin-left: auto; display: flex; align-items: center; gap: 12px;
}
.lang-select-wrap { position: relative; }
.lang-trigger {
    padding: 10px 36px 10px 16px;
    border-radius: 22px;
    border: 1px solid rgba(136,185,252,0.35);
    background: #fff;
    color: #333;
    font-size: 14px;
    box-shadow: 0 8px 20px rgba(136,185,252,0.18);
    transition: box-shadow .25s, border-color .25s, transform .15s;
    cursor: pointer;
    position: relative;
}
.lang-trigger::after {
    content: "";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px; height: 14px;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2388B9FC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat;
    background-size: 14px 14px;
}
.lang-trigger:hover {
    box-shadow: 0 12px 28px rgba(136,185,252,0.28);
    border-color: rgba(252,136,220,0.45);
    transform: translateY(-1px);
}
.lang-trigger:focus {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 2px var(--pink-20), 0 16px 30px rgba(136,185,252,0.32);
}
.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 180px;
    padding: 8px 0;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 18px 40px rgba(0,0,0,0.12);
    border: 1px solid rgba(136,185,252,0.25);
    display: none;
    z-index: 1001;
}
.lang-select-wrap.open .lang-menu { display: block; }
.lang-menu li {
    list-style: none;
    padding: 12px 16px;
    margin: 4px 0;
    cursor: pointer;
    font-size: 14px;
    color: #333;
    transition: background .15s, transform .1s;
    border-radius: 12px;
}
.lang-menu li:hover {
    background: linear-gradient(135deg, rgba(252,136,220,0.12), rgba(136,185,252,0.12));
    transform: translateY(-1px);
}
.lang-menu li.active {
    background: linear-gradient(135deg, rgba(252,136,220,0.18), rgba(136,185,252,0.18));
}
.lang-select {
    appearance: none;
    padding: 10px 36px 10px 16px;
    border-radius: 22px;
    border: 1px solid rgba(136,185,252,0.35);
    background: #fff;
    color: #333;
    font-size: 14px;
    box-shadow: 0 8px 20px rgba(136,185,252,0.18);
    transition: box-shadow .25s, border-color .25s, transform .15s;
}
.lang-select:hover {
    box-shadow: 0 12px 28px rgba(136,185,252,0.28);
    border-color: rgba(252,136,220,0.45);
    transform: translateY(-1px);
}
.lang-select:focus {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 2px var(--pink-20), 0 16px 30px rgba(136,185,252,0.32);
}
.lang-select-wrap::after {
    content: "";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2388B9FC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat;
    background-size: 14px 14px;
    opacity: .95;
    pointer-events: none;
}

/* --- 1. 无缝照片墙英雄区 --- */
.hero-section {
    position: relative; height: 100vh; width: 100%;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    background: #000; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}

.hero-section::after {
    content: "";
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 140px;
    background: var(--main-gradient);
    filter: blur(30px);
    opacity: 0.6;
    border-radius: 80px;
    pointer-events: none;
}

.bg-wall {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; flex-direction: column; justify-content: center; gap: 20px;
    opacity: 0.45; z-index: 1;
}

.row-container { display: flex; width: fit-content; gap: clamp(10px, 2.5vw, 20px); }
.row-container { will-change: transform; backface-visibility: hidden; }

.move-left { animation: seamlessLeft 40s linear infinite; }
.move-right { animation: seamlessRight 40s linear infinite; }

@keyframes seamlessLeft {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}
@keyframes seamlessRight {
    from { transform: translateX(-50%); }
    to { transform: translateX(0); }
}

.pic-box {
    width: clamp(200px, 24vw, 350px);
    height: clamp(130px, 15vw, 220px);
    border-radius: 24px;
    background: #222; flex-shrink: 0; overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.pic-box img { width: 100%; height: 100%; object-fit: cover; }

.hero-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.9) 100%);
    z-index: 2;
}

.hero-content {
    position: relative; z-index: 10; text-align: center; color: white;
    margin-top: -20px;
}
.hero-content h1 { font-size: clamp(40px, 8vw, 72px); font-weight: 900; margin-bottom: 20px; }
.hero-content p { font-size: clamp(18px, 3vw, 24px); letter-spacing: 12px; font-weight: 300; margin-bottom: 40px; }

.btn-group { display: flex; gap: 20px; justify-content: center; }
.btn { padding: 16px 45px; border-radius: 40px; font-size: 18px; font-weight: bold; text-decoration: none; transition: 0.3s; }
.btn-main { background: var(--main-gradient); color: white; }
.btn-sub { border: 2px solid white; color: white; }
.btn-sub:hover { background: white; color: #000; }
.btn { position: relative; overflow: hidden; }
.btn::before {
    content: "";
    position: absolute;
    left: 0; top: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.35), rgba(255,255,255,0));
    transform: translateX(-120%);
    transition: transform .6s ease;
    border-radius: inherit;
    pointer-events: none;
    mix-blend-mode: screen;
}
.btn:hover::before { transform: translateX(120%); }

/* --- Reveal Animations --- */
.reveal-up, .reveal-left, .reveal-right {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s cubic-bezier(0.19, 1, 0.22, 1), transform .7s cubic-bezier(0.19, 1, 0.22, 1);
}
.reveal-left { transform: translateX(-24px); }
.reveal-right { transform: translateX(24px); }
.reveal-active {
    opacity: 1;
    transform: translate3d(0,0,0);
}

.shine {
    background: linear-gradient(90deg, #ffffff 0%, rgba(255,255,255,0.6) 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 100%;
    animation: shineMove 2.8s ease-in-out infinite;
}
@keyframes shineMove {
    0% { background-position: 0% 0; }
    50% { background-position: 100% 0; }
    100% { background-position: 0% 0; }
}

.m-card { will-change: transform, box-shadow; }
.m-card:hover { transform: translateY(-15px) perspective(800px) rotateY(1.5deg); }
.m-card:hover .card-visual img { transform: scale(1.08); }

.milestone-dot:hover .milestone-dot-icon {
    transform: scale(1.03);
    box-shadow: 0 14px 28px rgba(0,0,0,0.18);
    transition: .25s ease;
}
/* --- 2. 交互营销板块 --- */
.marketing-section {
    padding: 120px 8% 100px;
    background-color: var(--bg-light);
    text-align: center;
}
.section-title { font-size: 36px; font-weight: 800; margin-bottom: 60px; background: var(--main-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.marketing-section {
    position: relative;
    overflow: hidden;
}

.marketing-section::before {
    content: "";
    position: absolute;
    top: -40px;
    left: -10%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle at 30% 30%, var(--pink-30), transparent 60%);
    filter: blur(40px);
    opacity: 0.7;
    pointer-events: none;
}

.marketing-section::after {
    content: "";
    position: absolute;
    top: 140px;
    right: -8%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle at 70% 70%, var(--blue-30), transparent 60%);
    filter: blur(40px);
    opacity: 0.7;
    pointer-events: none;
}

.marketing-section.anim-init .section-title,
.marketing-section.anim-init .m-card {
    opacity: 0;
    transform: translateY(40px);
}

.marketing-section.anim-active .section-title,
.marketing-section.anim-active .m-card {
    opacity: 1;
    transform: translateY(0);
}

.marketing-section.anim-init .section-title,
.marketing-section.anim-active .section-title {
    transition: opacity 0.7s cubic-bezier(0.19, 1, 0.22, 1), transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}

.marketing-section.anim-init .m-card,
.marketing-section.anim-active .m-card {
    transition: opacity 0.7s cubic-bezier(0.19, 1, 0.22, 1), transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}

.marketing-section.anim-active .card-container .m-card:nth-child(1) {
    transition-delay: 0.1s;
}
.marketing-section.anim-active .card-container .m-card:nth-child(2) {
    transition-delay: 0.25s;
}
.marketing-section.anim-active .card-container .m-card:nth-child(3) {
    transition-delay: 0.4s;
}

.card-container {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px; max-width: 1200px; margin: 0 auto;
}

.m-card {
    background: #fff; border-radius: 28px; overflow: hidden;
    display: flex; flex-direction: column; text-align: left;
    position: relative; transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    padding-bottom: 30px; cursor: pointer; border: 1px solid transparent;
}
.m-card:hover { transform: translateY(-15px); box-shadow: 0 30px 60px rgba(136, 185, 252, 0.15); border-color: var(--blue); }

.card-visual { width: 100%; height: 220px; background-color: #f0f4f4; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.card-visual img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.m-card:hover .card-visual img { transform: scale(1.08); }

.card-body { padding: 30px 35px 10px; }
.card-body h3 { font-size: 24px; font-weight: 800; margin-bottom: 12px; }
.card-body p.desc { font-size: 15px; color: #666; line-height: 1.6; }

.expandable-list {
    max-height: 0; overflow: hidden;
    transition: max-height 0.6s ease, margin 0.3s;
    padding: 0 35px; list-style: none;
}
.m-card:hover .expandable-list { max-height: 300px; margin-top: 20px; }
.expandable-list li { font-size: 14px; color: #555; margin-bottom: 12px; display: flex; gap: 10px; }
.expandable-list li::before { content: "●"; background: var(--main-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-size: 10px; margin-top: 2px; }

.quote { position: absolute; bottom: 20px; right: 30px; font-size: 40px; color: #f0f0f0; font-weight: bold; }

/* --- 3. 新添加：特色营销解决方案板块 --- */
.solutions-tabs-section {
    padding: 100px 8%;
    background: #fff;
    text-align: center;
    position: relative;
}

.solutions-tabs-section::before {
    content: "";
    position: absolute;
    top: 20px;
    left: -2%;
    width: 380px;
    height: 380px;
    background: radial-gradient(
        circle at 35% 35%,
        rgba(136, 185, 252, 0.18) 0%,
        rgba(136, 185, 252, 0.10) 40%,
        transparent 80%
    );
    filter: blur(46px);
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
    animation: floatBlob 8s ease-in-out infinite;
}

.solutions-tabs-section::after {
    content: "";
    position: absolute;
    top: 140px;
    right: -6%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle at 70% 70%, var(--pink-30), transparent 60%);
    filter: blur(44px);
    opacity: 0.9;
    pointer-events: none;
    z-index: 0;
    animation: floatBlob 10s ease-in-out infinite reverse;
}

@keyframes floatBlob {
    0% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
    100% { transform: translate(0, 0); }
}

.milestone-section {
    padding: 120px 12% 140px;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.milestone-section::before {
    content: "";
    position: absolute;
    top: 40px;
    left: 4%;
    width: 320px;
    height: 320px;
    background: radial-gradient(
        circle at 35% 35%,
        rgba(252, 136, 220, 0.18) 0%,
        rgba(252, 136, 220, 0.10) 40%,
        transparent 80%
    );
    filter: blur(46px);
    opacity: 0.45;
    pointer-events: none;
    z-index: 0;
    animation: floatBlob 9s ease-in-out infinite 1s;
}

.milestone-section::after {
    content: "";
    position: absolute;
    top: 180px;
    right: -6%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle at 70% 70%, var(--blue-30), transparent 60%);
    filter: blur(44px);
    opacity: 0.92;
    pointer-events: none;
    z-index: 0;
    animation: floatBlob 11s ease-in-out infinite reverse 1s;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 60px;
    border-bottom: 2px solid #f0f0f0;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    padding: 20px 10px;
    font-size: 18px;
    font-weight: 700;
    color: #999;
    cursor: pointer;
    position: relative;
    transition: 0.3s;
}

.tab-btn:hover { color: var(--blue); }

.tab-btn.active {
    color: #333;
}

/* 激活状态下划线 - 使用平台渐变色 */
.tab-btn.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--main-gradient);
    border-radius: 2px;
}

.tab-content-container {
    max-width: 1100px;
    margin: 0 auto;
    min-height: 400px;
}

/* 每一个面板的布局 */
.tab-panel {
    display: none;
    align-items: center;
    gap: 60px;
    text-align: left;
    animation: slideIn 0.6s ease;
}

.tab-panel.active {
    display: flex;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-info { flex: 1; }
.tab-info h2 { font-size: 32px; font-weight: 800; margin-bottom: 25px; }
.tab-info p { font-size: 16px; color: #666; line-height: 1.8; margin-bottom: 30px; }

.tab-visual-box {
    flex: 1;
    height: 380px;
    background: var(--bg-light);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 15px 35px rgba(0,0,0,0.03);
}
.tab-visual-box img { width: 100%; height: 100%; object-fit: cover; }

.more-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--pink);
    font-weight: 700;
    text-decoration: none;
    transition: 0.3s;
}
.more-link:hover { gap: 12px; opacity: 0.8; }

.milestone-section {
    padding: 120px 12% 140px;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.milestone-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.milestone-title-wrap {
    margin-bottom: 60px;
}

.milestone-title {
    font-size: 32px;
    font-weight: 800;
    background: var(--main-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.milestone-main {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.milestone-card {
    display: flex;
    align-items: stretch;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.06);
    background: #ffffff;
    position: relative;
}

.milestone-card-left {
    flex: 0 0 260px;
    background: var(--main-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: 800;
}

.milestone-card-right {
    flex: 1;
    padding: 32px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.milestone-date {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.milestone-heading {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 14px;
}

.milestone-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.milestone-timeline {
    position: relative;
    padding: 40px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.milestone-line {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--pink-20), var(--blue-20));
}

.milestone-dot {
    position: relative;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transform: translateY(-50%);
}

.milestone-dot-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    object-fit: contain;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
    background: #fff;
}

.milestone-dot-label {
    font-size: 12px;
    color: #999;
}

.milestone-dot.active::before {
    transform: scale(1.05);
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.18);
}

.milestone-dot.active .milestone-dot-label {
    color: #333;
    font-weight: 700;
}

.milestone-dot.active .milestone-dot-icon {
    outline: 3px solid var(--blue);
    outline-offset: 2px;
}

@keyframes milestoneSlideFromLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes milestoneSlideFromRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.milestone-card.anim-from-left {
    animation: milestoneSlideFromLeft 0.45s ease both;
}

.milestone-card.anim-from-right {
    animation: milestoneSlideFromRight 0.45s ease both;
}

@media (max-width: 768px) {
    .milestone-section {
        padding: 80px 6% 100px;
    }

    .milestone-card {
        flex-direction: column;
    }

    .milestone-card-left {
        flex-basis: auto;
        padding: 24px 0;
    }

    .milestone-card-right {
        padding: 24px 20px 28px;
    }

    .milestone-timeline {
        gap: 18px;
    }
}

.contact-section {
    padding: 120px 10% 100px;
    background: #fdfdfd;
    position: relative;
    overflow: hidden;
}

.contact-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 80px;
}

.contact-left {
    position: relative;
    flex: 1.4;
    display: flex;
    align-items: flex-start;
}

.contact-badge {
    position: absolute;
    left: -25%;
    top: -40%;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #ffe9a3, #ffd06b);
    opacity: 0.9;
    z-index: 0;
}

.contact-left-content {
    position: relative;
    z-index: 1;
}

.contact-title {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 40px;
    background: var(--main-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-left-items {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    margin-bottom: 12px;
}

.contact-item-label {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-item-link {
    font-size: 14px;
    color: var(--blue);
    text-decoration: none;
}

.contact-item-link:hover {
    text-decoration: underline;
}

.contact-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 28px;
}

 .contact-section::before {
    content: "";
    position: absolute;
    top: -20px;
    left: -10%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle at 30% 30%, var(--blue-20), transparent 60%);
    filter: blur(34px);
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
}

.contact-section::after {
    content: "";
    position: absolute;
    top: 100px;
    right: 6%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle at 70% 70%, var(--pink-30), transparent 60%);
    filter: blur(44px);
    opacity: 0.94;
    pointer-events: none;
    z-index: 0;
}
@media (max-width: 960px) {
    .contact-section {
        padding: 80px 6% 80px;
    }

    .contact-inner {
        flex-direction: column;
        gap: 40px;
    }

    .contact-badge {
        left: -10%;
        top: -20%;
        width: 320px;
        height: 320px;
    }
}