/* ---------- 设计变量 ---------- */
:root {
    --primary: #2563ff;
    --primary-deep: #0b1030;
    --primary-dark: #060a24;
    --cyan: #00d4ff;
    --purple: #7c4dff;
    --gradient: linear-gradient(135deg, #2563ff 0%, #00d4ff 100%);
    --gradient-purple: linear-gradient(135deg, #7c4dff 0%, #2563ff 100%);
    --text-main: #1b2140;
    --text-sub: #5c6480;
    --text-light: #9aa3c0;
    --bg-light: #f5f8ff;
    --bg-gray: #f0f3fa;
    --white: #ffffff;
    --border: #e6ebf5;
    --shadow: 0 10px 40px rgba(20, 60, 150, 0.08);
    --shadow-hover: 0 20px 50px rgba(37, 99, 255, 0.18);
    --radius: 14px;
    --header-h: 76px;
    --container: 1200px;
}

/* ---------- 基础重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-main);
    background: var(--white);
    line-height: 1.7;
    font-size: 15px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color .25s ease;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.3;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.text-gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 34px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all .3s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 8px 24px rgba(37, 99, 255, .35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 34px rgba(37, 99, 255, .45);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, .55);
}

.btn-outline:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.btn-ghost {
    background: rgba(37, 99, 255, .08);
    color: var(--primary);
}

.btn-ghost:hover {
    background: var(--primary);
    color: #fff;
}

/* ---------- 顶部导航 ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    z-index: 1000;
    transition: all .35s ease;
    background: rgba(8, 12, 40, .85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.header.scrolled {
    height: 64px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 4px 24px rgba(15, 30, 80, .08);
}

.header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 21px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
}

.logo-mark {
    width: 38px;
    height: 38px;
    /* border-radius: 10px; */
    background: var(--gradient);
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 19px;
    box-shadow: 0 6px 18px rgba(0, 212, 255, .4);
}

.header.scrolled .logo {
    color: var(--text-main);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-list a {
    position: relative;
    padding: 5px 10px;
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, .82);
    border-radius: 8px;
}

.header.scrolled .nav-list a {
    color: var(--text-sub);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--cyan);
}

.header.scrolled .nav-list a:hover,
.header.scrolled .nav-list a.active {
    color: var(--primary);
}

.nav-list a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -2px;
    transform: translateX(-50%);
    width: 22px;
    height: 3px;
    border-radius: 3px;
    background: var(--gradient);
}

.nav-cta {
    margin-left: 12px;
}

/* 提高优先级，避免 .nav-list a 的默认样式覆盖按钮样式 */
.nav-list a.nav-cta {
    padding: 13px 26px;
    border-radius: 50px;
    color: #fff;
}

.nav-list a.nav-cta:hover {
    color: #fff;
}

.header.scrolled .nav-cta {
    color: #fff;
}


.header.scrolled .nav-list a.nav-cta {
    color:#fff;
}


/* 汉堡按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 42px;
    height: 42px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    height: 2.5px;
    width: 100%;
    border-radius: 3px;
    background: #fff;
    transition: all .3s ease;
}

.header.scrolled .nav-toggle span {
    background: var(--text-main);
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* ---------- 首页 Banner ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 40px) 0 60px;
    background: radial-gradient(ellipse at 75% 20%, #15205e 0%, #0a0f33 45%, #05081f 100%);
    overflow: hidden;
    color: #fff;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, .05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.hero-glow {
    position: absolute;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, .22), transparent 65%);
    top: -120px;
    right: -100px;
    pointer-events: none;
}

.hero-glow.two {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(124, 77, 255, .25), transparent 65%);
    top: auto;
    right: auto;
    bottom: -160px;
    left: -120px;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: 50px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    border-radius: 50px;
    background: rgba(0, 212, 255, .1);
    border: 1px solid rgba(0, 212, 255, .3);
    color: var(--cyan);
    font-size: 13.5px;
    margin-bottom: 26px;
}

.hero-badge .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .35; }
}

.hero h1 {
    font-size: 52px;
    line-height: 1.22;
    margin-bottom: 22px;
    letter-spacing: .5px;
}

.hero-desc {
    font-size: 17px;
    color: rgba(220, 228, 255, .78);
    max-width: 540px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 46px;
    flex-wrap: wrap;
}

.hero-stat .num {
    font-size: 34px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-stat .label {
    font-size: 13.5px;
    color: rgba(220, 228, 255, .6);
}

.hero-visual {
    position: relative;
}

.hero-visual img {
    width: 100%;
    border-radius: 22px;
    box-shadow: 0 30px 80px rgba(0, 120, 255, .35);
    border: 1px solid rgba(120, 180, 255, .25);
}

.hero-float-card {
    position: absolute;
    background: rgba(255, 255, 255, .1);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 14px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13.5px;
    animation: floaty 4.5s ease-in-out infinite;
}

.hero-float-card .fc-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-size: 18px;
    background: var(--gradient);
}

.hero-float-card .fc-t {
    font-weight: 700;
    font-size: 14px;
}

.hero-float-card .fc-s {
    color: rgba(220, 228, 255, .65);
    font-size: 12px;
}

.hero-float-card.f1 {
    top: 34px;
    left: -28px;
}

.hero-float-card.f2 {
    bottom: 40px;
    right: -22px;
    animation-delay: 1.6s;
}

@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

/* ---------- 通用区块 ---------- */
.section {
    padding: 96px 0;
}

.section.gray {
    background: var(--bg-light);
}

.section.dark {
    background: var(--primary-deep);
    color: #fff;
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 50px;
    background: rgba(37, 99, 255, .09);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section.dark .section-tag {
    background: rgba(0, 212, 255, .12);
    color: var(--cyan);
}

.section-head h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.section-head p {
    color: var(--text-sub);
    font-size: 16px;
}

.section.dark .section-head p {
    color: rgba(220, 228, 255, .65);
}

.section-more {
    text-align: center;
    margin-top: 48px;
}

/* ---------- 服务卡片（首页） ---------- */
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all .35s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 62px;
    height: 62px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(37, 99, 255, .12), rgba(0, 212, 255, .12));
    display: grid;
    place-items: center;
    font-size: 28px;
    margin-bottom: 22px;
    transition: all .35s ease;
}

.service-card:hover .service-icon {
    background: var(--gradient);
    transform: rotate(-6deg) scale(1.05);
}

.service-card h3 {
    font-size: 19px;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 18px;
}

.service-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}

.service-link::after {
    content: " →";
    transition: margin .25s ease;
}

.service-card:hover .service-link::after {
    margin-left: 6px;
}

/* ---------- 关于我们速览（首页） ---------- */
.about-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-media {
    position: relative;
}

.about-media img {
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.about-media .exp-badge {
    position: absolute;
    bottom: -26px;
    right: -14px;
    width: 148px;
    height: 148px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    display: grid;
    place-items: center;
    text-align: center;
    box-shadow: 0 16px 40px rgba(37, 99, 255, .4);
}

.exp-badge .big {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.1;
}

.exp-badge .small {
    font-size: 13px;
    opacity: .9;
}

.about-text .section-tag {
    margin-left: 0;
}

.about-text h2 {
    font-size: 34px;
    margin: 14px 0 20px;
}

.about-text > p {
    color: var(--text-sub);
    margin-bottom: 26px;
}

.about-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 34px;
}

.about-point {
    display: flex;
    gap: 12px;
}

.about-point .ap-ic {
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: rgba(37, 99, 255, .1);
    color: var(--primary);
    display: grid;
    place-items: center;
    font-weight: 700;
}

.about-point h4 {
    font-size: 15.5px;
    margin-bottom: 2px;
}

.about-point p {
    font-size: 13px;
    color: var(--text-sub);
}

/* ---------- 核心优势 ---------- */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

/* 四列网格（关于页文化卡片），随断点降列 */
.adv-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.adv-card {
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(120, 160, 255, .14);
    border-radius: var(--radius);
    padding: 38px 30px;
    transition: all .35s ease;
}

.adv-card:hover {
    background: rgba(37, 99, 255, .12);
    border-color: rgba(0, 212, 255, .4);
    transform: translateY(-8px);
}

.adv-num {
    font-size: 44px;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(0, 212, 255, .9), rgba(124, 77, 255, .9));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: .9;
    line-height: 1;
    margin-bottom: 18px;
}

.adv-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.adv-card p {
    /* color: rgba(220, 228, 255, .62); */
    color: var(--text-sub);
    font-size: 14px;
}

/* ---------- 数据统计 ---------- */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item .stat-num {
    font-size: 46px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.stat-item .stat-label {
    color: var(--text-sub);
    font-size: 15px;
}

/* ---------- 案例 ---------- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.case-card {
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    background: #0b1030;
    box-shadow: var(--shadow);
}

.case-card img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    transition: transform .5s ease;
}

.case-card:hover img {
    transform: scale(1.08);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 10, 36, .95) 0%, rgba(6, 10, 36, .45) 55%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 26px;
    color: #fff;
}

.case-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(0, 212, 255, .2);
    border: 1px solid rgba(0, 212, 255, .45);
    color: var(--cyan);
    font-size: 12px;
    margin-bottom: 10px;
}

.case-overlay h3 {
    font-size: 19px;
    margin-bottom: 6px;
}

.case-overlay p {
    font-size: 13.5px;
    color: rgba(220, 228, 255, .72);
    opacity: 0;
    transform: translateY(12px);
    transition: all .35s ease;
}

.case-card:hover .case-overlay p {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- app ---------- */
.app-grid {
    margin: 30px auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    /* border:1px solid #f00; */
}

.app-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all .35s ease;
}

.app-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.app-thumb {
    position: relative;
    height: 208px;
    overflow: hidden;
}

.app-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.app-card:hover .app-thumb img {
    transform: scale(1.06);
}

.app-cat {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 14px;
    border-radius: 50px;
    background: rgba(37, 99, 255, .92);
    color: #fff;
    font-size: 12px;
}

.app-body {
    padding: 24px 24px 26px;
}

.app-date {
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 10px;
}

.app-body h3 {
    font-size: 17.5px;
    margin-bottom: 10px;
    transition: color .25s ease;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.app-card:hover .app-body h3 {
    color: var(--primary);
}

.app-body p {
    color: var(--text-sub);
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}



/* ---------- 合作客户 ---------- */
.partner-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
}

.partner-item {
    padding: 18px 38px;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-sub);
    font-weight: 600;
    font-size: 17px;
    background: #fff;
    transition: all .3s ease;
    letter-spacing: 1px;
}

.partner-item:hover {
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 8px 22px rgba(37, 99, 255, .12);
    transform: translateY(-4px);
}

/* ---------- CTA ---------- */
.cta-banner {
    border-radius: 24px;
    padding: 64px 48px;
    background:
        radial-gradient(circle at 85% 20%, rgba(0, 212, 255, .3), transparent 55%),
        radial-gradient(circle at 10% 85%, rgba(124, 77, 255, .35), transparent 55%),
        var(--primary-deep);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.cta-banner h2 {
    font-size: 30px;
    margin-bottom: 10px;
}

.cta-banner p {
    color: rgba(220, 228, 255, .72);
    font-size: 16px;
}

/* ---------- 内页顶部横幅 ---------- */
.page-banner {
    padding: calc(var(--header-h) + 70px) 0 64px;
    text-align: center;
    color: #fff;
    position: relative;
    background: radial-gradient(ellipse at 70% 0%, #1a2566 0%, #0a0f33 55%, #05081f 100%);
    overflow: hidden;
}

.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, .05) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at top, #000 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at top, #000 20%, transparent 70%);
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    font-size: 40px;
    margin-bottom: 14px;
}

.page-banner p {
    color: rgba(220, 228, 255, .72);
    font-size: 16.5px;
}

.breadcrumb {
    margin-top: 20px;
    font-size: 14px;
    color: rgba(220, 228, 255, .55);
}

.breadcrumb a:hover {
    color: var(--cyan);
}

.breadcrumb span {
    margin: 0 10px;
}

/* ---------- 内页通用布局 ---------- */
.content-block h2 {
    font-size: 30px;
    margin-bottom: 18px;
}

.content-block p {
    color: var(--text-sub);
    margin-bottom: 16px;
}

.feature-list {
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.feature-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--text-sub);
}

.feature-list li::before {
    content: "✓";
    flex: 0 0 24px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-size: 13px;
    display: grid;
    place-items: center;
    margin-top: 2px;
}

/* 时间轴（服务流程） */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 22px;
    counter-reset: step;
}

.process-item {
    text-align: center;
    position: hidden;
}

.process-dot {
    width: 74px;
    height: 74px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--border);
    display: grid;
    place-items: center;
    font-size: 28px;
    position: relative;
    z-index: 2;
    transition: all .35s ease;
}

.process-item:hover .process-dot {
    background: var(--gradient);
    border-color: transparent;
    transform: scale(1.08);
    box-shadow: 0 12px 28px rgba(37, 99, 255, .35);
}

.process-item h4 {
    font-size: 17px;
    margin-bottom: 8px;
}

.process-item p {
    font-size: 13.5px;
    color: var(--text-sub);
}

/* 服务详情页列表 */
.service-detail-grid {
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.detail-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px 30px;
    transition: all .3s ease;
}

.detail-card:hover {
    border-color: rgba(37, 99, 255, .4);
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

.detail-card .d-icon {
    width: 58px;
    height: 58px;
    border-radius: 14px;
    background: var(--gradient);
    display: grid;
    place-items: center;
    font-size: 26px;
    color: #fff;
    margin-bottom: 20px;
}

.detail-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.detail-card p {
    color: var(--text-sub);
    font-size: 14.5px;
}

/* 技术栈标签 */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tech-tags span {
    padding: 9px 22px;
    border-radius: 50px;
    background: rgba(37, 99, 255, .07);
    border: 1px solid rgba(37, 99, 255, .18);
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    transition: all .25s ease;
}

.tech-tags span:hover {
    background: var(--gradient);
    color: #fff;
    border-color: transparent;
}

/* 方案两栏（小程序/APP） */
.solution-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-media img {
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(20, 50, 130, .25);
}

.solution-points {
    display: grid;
    gap: 20px;
    margin-top: 28px;
}

.solution-point {
    display: flex;
    gap: 16px;
}

.sp-icon {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(37, 99, 255, .12), rgba(0, 212, 255, .12));
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 22px;
}

.solution-point h4 {
    font-size: 17px;
    margin-bottom: 4px;
}

.solution-point p {
    font-size: 14px;
    color: var(--text-sub);
    margin: 0;
}

/* 价格/方案卡 */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: stretch;
}

.plan-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    transition: all .35s ease;
}

.plan-card.featured {
    border: 2px solid transparent;
    background:
        linear-gradient(#fff, #fff) padding-box,
        var(--gradient) border-box;
    box-shadow: var(--shadow-hover);
    position: relative;
    transform: translateY(-10px);
}

.plan-flag {
    position: absolute;
    top: 18px;
    right: -32px;
    transform: rotate(45deg);
    background: var(--gradient);
    color: #fff;
    font-size: 12px;
    padding: 4px 38px;
    overflow: hidden;
}

.plan-card h3 {
    font-size: 21px;
    margin-bottom: 8px;
}

.plan-price {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary);
    margin: 14px 0 4px;
}

.plan-price small {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 400;
}

.plan-desc {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 24px;
}

.plan-card ul {
    display: grid;
    gap: 12px;
    margin-bottom: 30px;
    flex: 1;
}

.plan-card li {
    color: var(--text-sub);
    font-size: 14.5px;
    display: flex;
    gap: 10px;
}

.plan-card li::before {
    content: "◆";
    color: var(--cyan);
    font-size: 11px;
    margin-top: 5px;
}

.plan-card .btn {
    width: 100%;
}

/* 新闻列表页 */
.news-list {
    display: grid;
    gap: 28px;
    /* max-width: 880px; */
    margin: 0 auto;

    grid-template-columns: repeat(3, 1fr);

    /* grid-template-columns: 2fr; */
}

.news-item {
    display: grid;
    /* grid-template-columns: 200px 2fr; */
    /* gap: 28px; */
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .3s ease;
}

.news-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.news-item .ni-thumb {
    /* height: 100%; */
    height: 200px;
    min-height: 100px;
    
}

.news-item .ni-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ni-body {
    /* padding: 26px 28px 26px 0; */
    padding: 26px;
}

.ni-meta {
    display: flex;
    gap: 18px;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.ni-meta .ni-cat {
    color: var(--primary);
    font-weight: 600;
}

.ni-body h3 {
    font-size: 20px;
    margin-bottom: 12px;
    transition: color .25s ease;
}

.news-item:hover .ni-body h3 {
    color: var(--primary);
}

.ni-body p {
    color: var(--text-sub);
    font-size: 14.5px;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ni-more {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a, .pagination .active, .pagination .disabled  {
    min-width: 42px;
    height: 42px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    display: grid;
    place-items: center;
    color: var(--text-sub);
    font-weight: 600;
}

.pagination a:hover,
.pagination a.active, .pagination .active {
    background: var(--gradient);
    color: #fff;
    border-color: transparent;
}

/* 案例筛选 */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 46px;
}

.filter-bar button {
    padding: 9px 26px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-sub);
    font-size: 14.5px;
    cursor: pointer;
    transition: all .25s ease;
}

.filter-bar button.active,
.filter-bar button:hover {
    background: var(--gradient);
    color: #fff;
    border-color: transparent;
}

/* 联系页 */
.contact-grid {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 40px;
}

.contact-info-card {
    background: var(--gradient);
    border-radius: 20px;
    padding: 44px 38px;
    color: #fff;
}

.contact-info-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.contact-info-card > p {
    color: rgba(255, 255, 255, .82);
    font-size: 14.5px;
    margin-bottom: 34px;
}

.ci-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 28px;
}

.ci-icon {
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .18);
    display: grid;
    place-items: center;
    font-size: 20px;
}

.ci-item h4 {
    font-size: 15px;
    opacity: .85;
    font-weight: 500;
    margin-bottom: 2px;
}

.ci-item p {
    font-size: 16.5px;
    font-weight: 700;
    margin: 0;
}

.contact-form-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 44px 40px;
    box-shadow: var(--shadow);
}

.contact-form-card h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.contact-form-card > p {
    color: var(--text-sub);
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.form-group label em {
    color: #f0445a;
    font-style: normal;
    margin-left: 3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 14.5px;
    font-family: inherit;
    color: var(--text-main);
    outline: none;
    transition: border-color .25s ease, box-shadow .25s ease;
    background: #fbfcff;
}

.form-group textarea {
    resize: vertical;
    min-height: 118px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(37, 99, 255, .1);
}

.form-msg {
    margin-top: 14px;
    font-size: 14px;
    display: none;
}

.form-msg.ok {
    display: block;
    color: #11a86b;
}

.form-msg.err {
    display: block;
    color: #f0445a;
}

/* 地图占位 */
.map-block {
    margin-top: 60px;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    height: 340px;
    position: relative;
    background:
        linear-gradient(rgba(37, 99, 255, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 255, .06) 1px, transparent 1px),
        linear-gradient(135deg, #eef3ff, #dfeaff);
    background-size: 44px 44px, 44px 44px, 100% 100%;
    display: grid;
    place-items: center;
    text-align: center;
}

.map-pin {
    width: 64px;
    height: 64px;
    border-radius: 50% 50% 50% 0;
    background: var(--gradient);
    transform: rotate(-45deg);
    margin: 0 auto 18px;
    display: grid;
    place-items: center;
    box-shadow: 0 12px 30px rgba(37, 99, 255, .4);
}

.map-pin span {
    transform: rotate(45deg);
    font-size: 26px;
}

.map-block h4 {
    font-size: 20px;
}

.map-block p {
    color: var(--text-sub);
    font-size: 14.5px;
}

/* FAQ */
.faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    background: #fff;
    overflow: hidden;
}

.faq-q {
    width: 100%;
    padding: 22px 26px;
    border: none;
    background: transparent;
    text-align: left;
    font-size: 16.5px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-family: inherit;
}

.faq-q::after {
    content: "+";
    font-size: 24px;
    color: var(--primary);
    transition: transform .3s ease;
    flex: 0 0 auto;
}

.faq-item.open .faq-q::after {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}

.faq-a p {
    padding: 0 26px 22px;
    color: var(--text-sub);
    font-size: 14.5px;
    margin: 0;
}

/* ---------- 团队（关于页） ---------- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
}

.team-card {
    text-align: center;
}

.team-avatar {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 18px;
    overflow: hidden;
    margin-bottom: 18px;
    position: relative;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.team-card:hover .team-avatar img {
    transform: scale(1.07);
}

.team-card h4 {
    font-size: 18px;
}

.team-card span {
    color: var(--primary);
    font-size: 13.5px;
    font-weight: 600;
}

.team-card p {
    color: var(--text-sub);
    font-size: 13.5px;
    margin-top: 6px;
}

/* 发展历程时间轴 */
.history {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.history::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--cyan), var(--purple));
    transform: translateX(-50%);
}

.his-item {
    position: relative;
    width: 50%;
    padding: 0 44px 40px;
}

.his-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.his-item:nth-child(even) {
    left: 50%;
}

.his-item::before {
    content: "";
    position: absolute;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gradient);
    box-shadow: 0 0 0 5px rgba(37, 99, 255, .15);
}

.his-item:nth-child(odd)::before {
    right: -7px;
}

.his-item:nth-child(even)::before {
    left: -7px;
}

.his-year {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 6px;
}

.his-item h4 {
    font-size: 17px;
    margin-bottom: 6px;
}

.his-item p {
    color: var(--text-sub);
    font-size: 14px;
}

/* ---------- 页脚 ---------- */
.footer {
    background: #060a20;
    color: rgba(210, 218, 245, .68);
    padding-top: 76px;
    font-size: 14px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 44px;
    padding-bottom: 54px;
}

.footer .logo {
    margin-bottom: 18px;
}

.footer-about p {
    margin-bottom: 22px;
    line-height: 1.8;
}

.footer-qr {
    display: flex;
    gap: 18px;
}

.qr-box {
    text-align: center;
}

.qr-square {
    width: 86px;
    height: 86px;
    border-radius: 10px;
    background:
        linear-gradient(45deg, #1a2350 25%, transparent 25%, transparent 75%, #1a2350 75%),
        linear-gradient(45deg, #1a2350 25%, transparent 25%, transparent 75%, #1a2350 75%);
    background-size: 14px 14px;
    background-position: 0 0, 7px 7px;
    background-color: #fff;
    border: 5px solid #fff;
    margin-bottom: 8px;
}

.qr-box span {
    font-size: 12.5px;
    color: rgba(210, 218, 245, .55);
}

.footer h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 22px;
}

.footer-links li {
    margin-bottom: 13px;
}

.footer-links a:hover {
    color: var(--cyan);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    align-items: flex-start;
}

.footer-contact .fc-ic {
    color: var(--cyan);
}

.footer-bottom {
    border-top: 1px solid rgba(120, 150, 220, .12);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: rgba(210, 218, 245, .45);
}

.footer-bottom a:hover {
    color: var(--cyan);
}

/* ---------- 返回顶部 ---------- */
.back-top {
    position: fixed;
    right: 26px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--gradient);
    color: #fff;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all .3s ease;
    z-index: 900;
    box-shadow: 0 10px 26px rgba(37, 99, 255, .4);
}

.back-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ---------- 滚动入场动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity .7s ease, transform .7s ease;
}

.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   响应式适配
   ========================================================================== */

/* 大屏 ≤1200px */
@media (max-width: 1200px) {
    .hero h1 { font-size: 44px; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(3, 1fr); gap: 30px; }
}

/* 1101-1200px：收紧导航间距，保证 8 个栏目单行不换行 */
@media (max-width: 1200px) and (min-width: 1101px) {
    .logo { font-size: 19px; }
    .logo-mark { width: 34px; height: 34px; font-size: 17px; }
    .nav-list { gap: 2px; }
    .nav-list a { padding: 8px 11px; font-size: 14.5px; }
    .nav-cta { margin-left: 6px; padding: 11px 24px; }
}

/* ≤1100px：切换为右侧抽屉导航 */
@media (max-width: 1100px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(82vw, 340px);
        height: 100vh;
        background: var(--primary-deep);
        padding: 90px 24px 30px;
        transform: translateX(100%);
        transition: transform .35s ease;
        box-shadow: -10px 0 40px rgba(0, 0, 0, .35);
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .nav-list a {
        display: block;
        padding: 14px 16px;
        color: rgba(255, 255, 255, .85);
        border-radius: 10px;
    }

    .nav-list a.active,
    .nav-list a:hover {
        background: rgba(37, 99, 255, .18);
        color: var(--cyan);
    }

    .nav-list a.active::after {
        display: none;
    }

    .nav-list a.nav-cta {
        margin: 16px 0 0;
        text-align: center;
        width: 100%;
        padding: 14px 16px;
        border-radius: 12px;
        color: #fff;
    }

    .nav-mask {
        position: fixed;
        inset: 0;
        background: rgba(4, 8, 26, .55);
        opacity: 0;
        visibility: hidden;
        transition: all .3s ease;
        z-index: 999;
    }

    .nav-mask.show {
        opacity: 1;
        visibility: visible;
    }
}

/* 外部图片加载期间的占位底色 */
.hero-visual img { background: linear-gradient(135deg, #14204d, #1d2f6b); }
.about-media img,
.solution-media img { background: #dce5f6; }
.case-card img { background: #10194a; }
.news-thumb img,
.news-item .ni-thumb img,
.team-avatar img { background: #dce5f6; }

/* 平板 ≤992px */
@media (max-width: 992px) {
    :root { --header-h: 66px; }

    .section { padding: 72px 0; }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 44px;
        text-align: center;
    }

    .hero { min-height: auto; }

    .hero-desc { margin-left: auto; margin-right: auto; }

    .hero-actions { justify-content: center; }

    .hero-stats { justify-content: center; gap: 34px; }

    .hero-visual {
        max-width: 520px;
        margin: 0 auto;
    }

    .hero-float-card.f1 { left: 0; }
    .hero-float-card.f2 { right: 0; }

    .about-wrap,
    .solution-wrap {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .about-media {
        max-width: 540px;
        margin: 0 auto;
    }

    .advantage-grid,
    .case-grid,
    .news-grid,
    .plan-grid,
    .contact-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plan-card.featured { transform: none; }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .news-item {
        grid-template-columns: 1fr;
    }

    .news-item .ni-thumb {
        min-height: 0;
        height: 220px;
    }

    /* .app-item {
        grid-template-columns: 1fr;
    }

    .app-item .ni-thumb {
        min-height: 0;
        height: 220px;
    } */


    .ni-body {
        padding: 24px 26px 28px;
    }

    .section-head h2,
    .content-block h2 { font-size: 28px; }

    .page-banner h1 { font-size: 34px; }

    .history::before { left: 12px; }

    .his-item,
    .his-item:nth-child(even) {
        width: 100%;
        left: 0;
        text-align: left;
        padding-left: 42px;
        padding-right: 0;
    }

    .his-item:nth-child(odd)::before,
    .his-item:nth-child(even)::before {
        left: 5px;
        right: auto;
    }

    .his-item:nth-child(odd) { text-align: left; }
}

/* 手机 ≤768px */
@media (max-width: 768px) {
    body { font-size: 14.5px; }

    .container { padding: 0 18px; }

    .hero { padding-top: calc(var(--header-h) + 30px); }

    .hero h1 { font-size: 32px; }

    .hero-desc { font-size: 15px; }

    .hero-stats { gap: 26px; }

    .hero-stat .num { font-size: 28px; }

    .hero-float-card { display: none; }

    .section { padding: 60px 0; }

    .section-head { margin-bottom: 42px; }

    .section-head h2,
    .content-block h2,
    .about-text h2 { font-size: 25px; }

    .section-head p { font-size: 15px; }

    .service-grid,
    .advantage-grid,
    .case-grid,
    .news-grid,
    .plan-grid,
    .contact-grid,
    .team-grid,
    .service-detail-grid {
        grid-template-columns: 1fr;
    }
    .app-grid { grid-template-columns: repeat(2, 1fr); }

    .about-points { grid-template-columns: 1fr; }

    .process-grid { grid-template-columns: 1fr; gap: 26px; }

    .case-card img { height: 230px; }

    .stats-bar { grid-template-columns: 1fr 1fr; gap: 30px 16px; }

    .stat-item .stat-num { font-size: 34px; }

    .cta-banner {
        padding: 44px 28px;
        text-align: center;
        justify-content: center;
    }

    .cta-banner h2 { font-size: 24px; }

    .btn { padding: 12px 28px; font-size: 14.5px; }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }

    .page-banner {
        padding: calc(var(--header-h) + 46px) 0 48px;
    }

    .page-banner h1 { font-size: 28px; }

    .form-row { grid-template-columns: 1fr; gap: 0; }

    .contact-form-card,
    .contact-info-card { padding: 32px 24px; }

    .about-media .exp-badge {
        width: 116px;
        height: 116px;
        right: 8px;
        bottom: -20px;
    }

    .exp-badge .big { font-size: 28px; }

    .back-top {
        right: 16px;
        bottom: 20px;
        width: 44px;
        height: 44px;
    }

    .partner-item {
        padding: 13px 24px;
        font-size: 15px;
    }

    .map-block { height: 260px; }
}

/* 小屏手机 ≤480px */
@media (max-width: 480px) {
    .hero h1 { font-size: 27px; }

    .hero-actions { flex-direction: column; align-items: stretch; }

    .hero-actions .btn { width: 100%; }

    .hero-stats { gap: 20px; }

    .hero-stat .num { font-size: 24px; }

    .section-head h2 { font-size: 22px; }

    .cta-banner h2 { font-size: 21px; }

    .filter-bar button { padding: 8px 18px; font-size: 13.5px; }

    .news-list,
    .news-grid{
        grid-template-columns: 1fr;
    }

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





/* ==========================================================================
   右侧浮动客服面板（首页）
   ========================================================================== */
.cs-float {
    position: fixed;
    top: 118px;
    right: 18px;
    z-index: 950;
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 14px;
}

.cs-item {
    position: relative;
}

.cs-btn {
    width: 62px;
    min-height: 62px;
    padding: 7px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid var(--border);
    /* border-radius: 15px; */
    border-radius: 10px;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px rgba(20, 60, 150, .14);
    color: var(--text-sub);
    cursor: pointer;
    transition: all .25s ease;
}

.cs-btn:hover,
.cs-item.is-open .cs-btn {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    transform: translateX(-5px);
    box-shadow: 0 10px 26px rgba(37, 99, 255, .35);
}

/* QQ / 微信 品牌色 */
.cs-item[data-cs="qq"] .cs-btn:hover,
.cs-item[data-cs="qq"].is-open .cs-btn {
    background: #12B7F5;
    box-shadow: 0 10px 26px rgba(18, 183, 245, .35);
}

.cs-item[data-cs="wechat"] .cs-btn:hover,
.cs-item[data-cs="wechat"].is-open .cs-btn {
    background: #07C160;
    box-shadow: 0 10px 26px rgba(7, 193, 96, .35);
}

.cs-ic {
    font-size: 20px;
    line-height: 1;
    display: grid;
    place-items: center;
}

.cs-ic.cs-svg {
    width: 22px;
    height: 22px;
}

.cs-ic.cs-svg svg {
    width: 100%;
    height: 100%;
}

.cs-btn small {
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
}

/* ---------- 信息弹层 ---------- */
.cs-pop {
    position: absolute;
    top: 0;
    right: calc(100% + 14px);
    width: 252px;
    padding: 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(15, 35, 90, .2);
    opacity: 0;
    visibility: hidden;
    transform: translateX(14px);
    transition: all .28s ease;
    pointer-events: none;
}

.cs-item.is-open .cs-pop {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    pointer-events: auto;
}

/* 小箭头 */
.cs-pop::after {
    content: "";
    position: absolute;
    top: 24px;
    right: -7px;
    width: 12px;
    height: 12px;
    background: #fff;
    border-top: 1px solid var(--border);
    border-right: 1px solid var(--border);
    transform: rotate(45deg);
}

.cs-pop-title {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border);
}

.cs-pop-line {
    font-size: 12.5px;
    color: var(--text-light);
    margin-bottom: 3px;
}

.cs-pop-main {
    display: block;
    font-size: 21px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--primary);
    margin-bottom: 10px;
}

.cs-pop-sub {
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--text-sub);
}

.cs-pop-link {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 50px;
    background: var(--gradient);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    box-shadow: 0 6px 16px rgba(37, 99, 255, .3);
}

.cs-pop-link:hover {
    color: #fff;
    transform: translateY(-2px);
}

/* 微信弹层二维码 */
.cs-qr {
    width: 124px;
    height: 124px;
    margin: 4px auto 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background:
        linear-gradient(45deg, #1a2350 25%, transparent 25%, transparent 75%, #1a2350 75%),
        linear-gradient(45deg, #1a2350 25%, transparent 25%, transparent 75%, #1a2350 75%);
    background-size: 15.5px 15.5px;
    background-position: 0 0, 7.75px 7.75px;
    background-color: #fff;
}

.cs-pop-wechat {
    text-align: center;
}

.cs-pop-wechat .cs-pop-title {
    text-align: left;
}

.cs-wechat-id {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 9px;
    background: var(--bg-light);
    font-size: 13px;
    color: var(--text-main);
    text-align: left;
}

.cs-wechat-id b {
    font-weight: 700;
}

.cs-copy {
    flex: 0 0 auto;
    border: none;
    border-radius: 7px;
    padding: 5px 12px;
    background: rgba(37, 99, 255, .1);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s ease;
}

.cs-copy:hover {
    background: var(--primary);
    color: #fff;
}

.cs-copy.done {
    background: #11a86b;
    color: #fff;
}

/* ---------- 手机端适配 ---------- */
@media (max-width: 768px) {
    .cs-float {
        top: 82px;
        right: 10px;
        gap: 2px;
    }

    .cs-btn {
        width: 50px;
        min-height: 50px;
        border-radius: 13px;
        padding: 6px 2px;
    }

    .cs-ic { font-size: 17px; }

    .cs-ic.cs-svg {
        width: 19px;
        height: 19px;
    }

    .cs-btn small { font-size: 10px; }

    .cs-pop {
        width: 232px;
        right: calc(100% + 10px);
        padding: 16px;
    }

    .cs-pop-main { font-size: 19px; }

    .cs-qr {
        width: 108px;
        height: 108px;
        background-size: 13.5px 13.5px;
        background-position: 0 0, 6.75px 6.75px;
    }
}

/* 超窄屏：隐藏文字标签，仅保留图标，弹层收窄 */
@media (max-width: 380px) {
    .cs-btn small { display: none; }

    .cs-btn {
        width: 44px;
        min-height: 44px;
    }

    .cs-pop { width: 218px; }
}

.to-back-top {   
    visibility: hidden;   
}

.to-back-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}


/* ==========================================================================
   APP 案例展示轮播（首页）
   ========================================================================== */
.app-slider {
    margin-top: 46px;
}

.as-body {
    position: relative;
}

.as-viewport {
    overflow: hidden;
}

.as-track {
    display: flex;
    gap: 20px;
    transition: transform .55s cubic-bezier(.22, .61, .36, 1);
    /* will-change: transform; */
}

.as-slide {
    position: relative;
    flex: 0 0 calc((100% - 60px) / 4);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .12);
    /* box-shadow: 0 18px 46px rgba(2, 8, 40, .5); */
    cursor: pointer;
}

.as-slide img {
    width: 100%;
    aspect-ratio: 9 / 16;
    object-fit: cover;
    transition: transform .5s ease;
}

.as-slide:hover img {
    transform: scale(1.06);
}

.as-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 42px 18px 14px;
    background: linear-gradient(to top, rgba(3, 8, 35, .94), rgba(3, 8, 35, 0));
    color: #fff;
}

.as-caption h3 {
    font-size: 16px;
    margin-bottom: 2px;
}

.as-caption p {
    font-size: 12.5px;
    color: rgba(255, 255, 255, .72);
}

/* 左右箭头：毛玻璃圆形按钮，悬浮在视口两侧 */
.as-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .3);
    background: rgba(255, 255, 255, .12);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
    transition: background .3s ease, border-color .3s ease, transform .3s ease;
}

.as-arrow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 11px;
    height: 11px;
    border-top: 2.5px solid #fff;
    border-right: 2.5px solid #fff;
}

.as-prev {
    left: 14px;
}

.as-prev::before {
    transform: translate(-38%, -50%) rotate(-135deg);
}

.as-next {
    right: 14px;
}

.as-next::before {
    transform: translate(-62%, -50%) rotate(45deg);
}

.as-arrow:hover {
    background: var(--gradient);
    border-color: transparent;
    transform: translateY(-50%) scale(1.08);
}

/* 底部小圆点 */
.as-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 26px;
}

.as-dot {
    width: 9px;
    height: 9px;
    padding: 0;
    border: none;
    border-radius: 99px;
    background: rgba(0, 0, 0, .28);
    cursor: pointer;
    transition: width .3s ease, background .3s ease;
}

.as-dot:hover {
    background: rgba(0, 0, 0, .55);

}

.as-dot.active {
    width: 26px;
    background: var(--gradient);
}

/* 平板：一行 2 张 */
@media (max-width: 1100px) {
    .as-slide {
        flex-basis: calc((100% - 20px) / 2);
    }
}

/* 手机：一行 2 张，箭头缩小 */
@media (max-width: 639px) {
    .app-slider {
        margin-top: 34px;
    }

    .as-slide {
        flex-basis: calc((100% - 20px) / 2);
    }

    .as-arrow {
        width: 38px;
        height: 38px;
    }

    .as-prev { left: 8px; }
    .as-next { right: 8px; }

    .as-dots {
        gap: 8px;
        margin-top: 20px;
    }
}