/* ==========================================================================
   湖北启明软件开发有限公司 · 官网样式表
   主题色取自公司 Logo：深蓝 (#0b2a5b) → 科技蓝 (#1e90d8)
   ========================================================================== */

:root {
    --brand-deep: #0b2a5b;
    --brand-dark: #123a7a;
    --brand: #1e6fd8;
    --brand-light: #1e90d8;
    --brand-sky: #46b3f5;
    --brand-pale: #eaf3fd;
    --brand-pale-2: #f4f8fe;

    --text-1: #16233a;
    --text-2: #48566d;
    --text-3: #8794a8;
    --line: #e4eaf3;
    --bg: #ffffff;
    --bg-soft: #f6f9fd;
    --bg-deep: #0b1c39;

    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;

    --shadow-sm: 0 2px 10px rgba(18, 58, 122, 0.06);
    --shadow: 0 10px 30px rgba(18, 58, 122, 0.10);
    --shadow-lg: 0 20px 50px rgba(18, 58, 122, 0.16);

    --container: 1200px;
    --header-h: 76px;
    --grad: linear-gradient(120deg, var(--brand-deep) 0%, var(--brand) 52%, var(--brand-sky) 100%);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-1);
    background: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 15px; color: var(--text-1); }

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

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    transition: all .25s ease;
    white-space: nowrap;
    border: 1.5px solid transparent;
}
.btn-primary {
    background: var(--grad);
    color: #fff;
    box-shadow: 0 8px 20px rgba(30, 111, 216, .28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(30, 111, 216, .38); }
.btn-outline {
    border-color: var(--brand);
    color: var(--brand);
    background: #fff;
}
.btn-outline:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
.btn-ghost {
    border-color: rgba(255, 255, 255, .55);
    color: #fff;
    background: rgba(255, 255, 255, .08);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .2); }
.btn-light { background: #fff; color: var(--brand-dark); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 0, 0, .18); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- 头部导航 ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow .3s ease, background .3s ease;
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 46px; height: 46px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { font-size: 18px; font-weight: 700; color: var(--brand-deep); letter-spacing: .5px; }
.brand-sub { font-size: 10px; letter-spacing: 1.6px; color: var(--text-3); font-weight: 600; }

.site-nav { display: flex; align-items: center; gap: 12px; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-link {
    display: block;
    padding: 9px 15px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-2);
    transition: all .22s ease;
    position: relative;
}
.nav-link:hover { color: var(--brand); background: var(--brand-pale); }
.nav-link.is-active { color: var(--brand); font-weight: 700; background: var(--brand-pale); }
.nav-cta {
    margin-left: 8px;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--grad);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(30, 111, 216, .26);
    transition: all .25s ease;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(30, 111, 216, .36); }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 0 auto;
    background: var(--brand-deep);
    border-radius: 2px;
    transition: all .3s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--grad);
    color: #fff;
    padding: 90px 0 100px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 15% 25%, rgba(70, 179, 245, .40) 0, transparent 45%),
        radial-gradient(circle at 85% 15%, rgba(255, 255, 255, .16) 0, transparent 40%),
        radial-gradient(circle at 70% 90%, rgba(30, 144, 216, .35) 0, transparent 45%);
}
.hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,.7), transparent 85%);
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    align-items: center;
    gap: 60px;
}
.hero-tag {
    display: inline-block;
    padding: 7px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .16);
    border: 1px solid rgba(255, 255, 255, .28);
    font-size: 13px;
    letter-spacing: .6px;
    margin-bottom: 22px;
}
.hero-title {
    font-size: 46px;
    line-height: 1.25;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 20px;
    text-shadow: 0 6px 24px rgba(0, 0, 0, .14);
}
.hero-desc { font-size: 16.5px; color: rgba(255, 255, 255, .9); max-width: 620px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 22px; font-size: 14.5px; color: rgba(255, 255, 255, .92); }

.hero-visual { display: flex; justify-content: center; }
.hero-card {
    width: 100%;
    max-width: 340px;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .26);
    backdrop-filter: blur(8px);
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: floaty 6s ease-in-out infinite;
}
.hero-card img {
    width: 130px;
    height: 130px;
    object-fit: contain;
    margin: 0 auto 20px;
    background: #fff;
    border-radius: 26px;
    padding: 14px;
}
.hero-card-title { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.hero-card-sub { font-size: 13px; color: rgba(255, 255, 255, .82); margin-top: 6px; }

@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ---------- 通用 section ---------- */
.section { padding: 84px 0; }
.section-tight { padding: 40px 0; }
.section-alt { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--brand-light);
    margin-bottom: 12px;
    text-transform: uppercase;
}
.section-title { font-size: 34px; font-weight: 800; color: var(--brand-deep); letter-spacing: .5px; }
.section-desc { margin-top: 14px; color: var(--text-2); font-size: 16px; }
.section-foot { text-align: center; margin-top: 46px; }

.block-title { font-size: 26px; font-weight: 800; color: var(--brand-deep); margin-bottom: 20px; position: relative; padding-left: 18px; }
.block-title::before {
    content: "";
    position: absolute;
    left: 0; top: 6px; bottom: 6px;
    width: 5px;
    border-radius: 4px;
    background: var(--grad);
}
.sub-title { font-size: 18px; font-weight: 700; color: var(--brand-deep); margin: 28px 0 14px; }

/* ---------- 数据看板 ---------- */
.stats-section { padding: 0 0 10px; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: -58px;
    position: relative;
    z-index: 2;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
    transition: transform .3s ease;
}
.stat-card:hover { transform: translateY(-6px); }
.stat-value { font-size: 38px; font-weight: 800; color: var(--brand); line-height: 1; }
.stat-unit { font-size: 18px; margin-left: 2px; }
.stat-label { margin-top: 12px; color: var(--text-2); font-size: 15px; }

/* ---------- 服务卡片 ---------- */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
    display: block;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 34px 28px;
    transition: all .3s ease;
    position: relative;
    overflow: hidden;
}
.service-card::after {
    content: "";
    position: absolute;
    left: 0; top: 0;
    width: 100%; height: 4px;
    background: var(--grad);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::after { transform: scaleX(1); }
.service-icon {
    display: inline-flex;
    width: 62px; height: 62px;
    align-items: center; justify-content: center;
    font-size: 30px;
    border-radius: 16px;
    background: var(--brand-pale);
    margin-bottom: 20px;
}
.service-name { font-size: 20px; font-weight: 700; color: var(--brand-deep); margin-bottom: 12px; }
.service-summary { color: var(--text-2); font-size: 15px; }
.service-more { display: inline-block; margin-top: 18px; color: var(--brand); font-weight: 600; font-size: 14px; }

/* ---------- 解决方案卡片 ---------- */
.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.solution-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px 26px;
    transition: all .3s ease;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.solution-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
.solution-name { font-size: 19px; font-weight: 700; color: var(--brand-deep); }
.solution-scene {
    align-self: flex-start;
    font-size: 12px;
    color: var(--brand);
    background: var(--brand-pale);
    padding: 3px 12px;
    border-radius: 999px;
    font-weight: 600;
}
.solution-summary { color: var(--text-2); font-size: 14.5px; margin-bottom: 16px; }
.solution-points li {
    position: relative;
    padding-left: 20px;
    font-size: 14.5px;
    color: var(--text-2);
    margin-bottom: 8px;
}
.solution-points li::before {
    content: "";
    position: absolute;
    left: 2px; top: 10px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--brand-light);
}

/* ---------- 企业优势 ---------- */
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 26px;
    border: 1px solid var(--line);
    transition: all .3s ease;
    text-align: center;
}
.advantage-card:hover { border-color: var(--brand-light); box-shadow: var(--shadow); transform: translateY(-6px); }
.advantage-icon {
    display: inline-flex;
    width: 66px; height: 66px;
    align-items: center; justify-content: center;
    font-size: 32px;
    border-radius: 50%;
    background: var(--grad);
    margin-bottom: 18px;
}
.advantage-title { font-size: 19px; font-weight: 700; color: var(--brand-deep); margin-bottom: 10px; }
.advantage-text { color: var(--text-2); font-size: 14.5px; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.case-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px 30px;
    transition: all .3s ease;
    position: relative;
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.case-badge {
    display: inline-block;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--brand);
    background: var(--brand-pale);
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.case-name { font-size: 20px; font-weight: 700; color: var(--brand-deep); margin-bottom: 12px; }
.case-summary { color: var(--text-2); font-size: 15px; margin-bottom: 18px; }
.case-results-title { font-size: 14px; color: var(--text-3); font-weight: 600; margin-bottom: 10px; }
.case-results { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.case-results li {
    font-size: 13.5px;
    color: var(--brand-dark);
    background: var(--brand-pale-2);
    border: 1px solid var(--line);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}
.case-year { font-size: 13px; color: var(--text-3); }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
    display: block;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px 26px;
    transition: all .3s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.news-cat { font-size: 12.5px; font-weight: 600; color: var(--brand); background: var(--brand-pale); padding: 3px 12px; border-radius: 999px; }
.news-date { font-size: 13px; color: var(--text-3); }
.news-title { font-size: 17.5px; font-weight: 700; color: var(--brand-deep); line-height: 1.5; margin-bottom: 12px; }
.news-summary { font-size: 14.5px; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { display: inline-block; margin-top: 16px; color: var(--brand); font-weight: 600; font-size: 14px; }

/* ---------- CTA ---------- */
.cta-section { background: var(--grad); color: #fff; padding: 64px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-title { font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.cta-desc { color: rgba(255, 255, 255, .88); font-size: 16px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 内页 Hero ---------- */
.page-hero {
    background: var(--grad);
    color: #fff;
    padding: 72px 0 60px;
    position: relative;
    overflow: hidden;
}
.page-hero::after {
    content: "";
    position: absolute;
    right: -80px; top: -80px;
    width: 320px; height: 320px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}
.page-hero-sm { padding: 56px 0 44px; }
.page-eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 3px; color: rgba(255, 255, 255, .82); margin-bottom: 12px; }
.page-title { font-size: 38px; font-weight: 800; letter-spacing: .5px; margin-bottom: 12px; position: relative; }
.page-desc { color: rgba(255, 255, 255, .9); font-size: 16.5px; max-width: 720px; position: relative; }
.page-meta { color: rgba(255, 255, 255, .85); font-size: 14px; margin-top: 6px; position: relative; }
.breadcrumb { display: flex; gap: 8px; margin-top: 20px; font-size: 14px; color: rgba(255, 255, 255, .78); position: relative; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
.about-text p { color: var(--text-2); margin-bottom: 18px; text-align: justify; }
.about-badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.badge {
    font-size: 14px;
    font-weight: 600;
    color: var(--brand);
    background: var(--brand-pale);
    border: 1px solid rgba(30, 144, 216, .25);
    padding: 8px 18px;
    border-radius: 999px;
}
.about-card {
    background: var(--grad);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.about-card img { width: 120px; height: 120px; margin: 0 auto 20px; background: #fff; border-radius: 24px; padding: 12px; object-fit: contain; }
.about-card-name { font-size: 17px; font-weight: 700; }
.about-card-slogan { font-size: 13.5px; color: rgba(255, 255, 255, .85); margin-top: 6px; }

/* 时间线 */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 28px; }
.timeline::before {
    content: "";
    position: absolute;
    left: 6px; top: 8px; bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--brand-sky), var(--brand-deep));
    opacity: .35;
}
.timeline-item { position: relative; padding: 0 0 34px 30px; }
.timeline-item::before {
    content: "";
    position: absolute;
    left: -28px; top: 8px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--brand);
    box-shadow: 0 0 0 4px rgba(30, 111, 216, .12);
}
.timeline-year { font-size: 20px; font-weight: 800; color: var(--brand); margin-bottom: 4px; }
.timeline-title { font-size: 18px; font-weight: 700; color: var(--brand-deep); }
.timeline-text { color: var(--text-2); font-size: 15px; margin-top: 4px; }

/* 团队 */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px 22px;
    text-align: center;
    transition: all .3s ease;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.team-avatar {
    width: 76px; height: 76px;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    border-radius: 50%;
    background: var(--grad);
}
.team-name { font-size: 19px; font-weight: 700; color: var(--brand-deep); }
.team-role { font-size: 14px; color: var(--brand); font-weight: 600; margin: 4px 0; }
.team-title { font-size: 13px; color: var(--text-3); margin-bottom: 10px; }
.team-desc { font-size: 14px; color: var(--text-2); }

/* 文化 */
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture-card {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    padding: 32px 26px;
    text-align: center;
    transition: all .3s ease;
}
.culture-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); }
.culture-icon { display: inline-block; font-size: 34px; margin-bottom: 14px; }
.culture-card h3 { font-size: 19px; color: var(--brand-deep); margin-bottom: 10px; }
.culture-card p { color: var(--text-2); font-size: 14.5px; }

/* ---------- 服务详情 ---------- */
.chip-nav { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--text-2);
    background: #fff;
    border: 1px solid var(--line);
    padding: 9px 20px;
    border-radius: 999px;
    transition: all .25s ease;
}
.chip:hover { color: var(--brand); border-color: var(--brand); background: var(--brand-pale); transform: translateY(-2px); }

.service-detail-inner { display: grid; grid-template-columns: 1.7fr 1fr; gap: 46px; align-items: start; }
.service-detail-icon {
    display: inline-flex;
    width: 68px; height: 68px;
    align-items: center; justify-content: center;
    font-size: 34px;
    border-radius: 18px;
    background: var(--brand-pale);
    margin-bottom: 18px;
}
.service-detail-summary { font-size: 17px; font-weight: 600; color: var(--brand-dark); margin-bottom: 14px; }
.service-detail-desc { color: var(--text-2); text-align: justify; }

.feature-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--text-2); font-size: 15px; margin-bottom: 12px; }
.feature-check { color: var(--brand-light); font-weight: 700; flex-shrink: 0; }

.tech-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tech-tag {
    font-size: 13.5px;
    color: var(--brand-dark);
    background: var(--brand-pale-2);
    border: 1px solid var(--line);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}
.service-detail-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

.service-detail-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: calc(var(--header-h) + 24px); }
.side-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
}
.side-title { font-size: 17px; font-weight: 700; color: var(--brand-deep); margin-bottom: 16px; }
.process-list li { display: flex; align-items: center; gap: 12px; padding: 9px 0; font-size: 14.5px; color: var(--text-2); border-bottom: 1px dashed var(--line); }
.process-list li:last-child { border-bottom: none; }
.process-num { font-size: 13px; font-weight: 700; color: var(--brand); background: var(--brand-pale); width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; flex-shrink: 0; }
.side-card-accent { background: var(--grad); color: #fff; border: none; }
.side-card-accent .side-title { color: #fff; }
.side-card-accent p { color: rgba(255, 255, 255, .9); font-size: 14.5px; margin-bottom: 10px; }
.side-phone { font-size: 17px !important; font-weight: 800; letter-spacing: .3px; word-break: break-all; }
.side-phone a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 解决方案详情 ---------- */
.solution-scene-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
    background: var(--brand-pale);
    padding: 5px 16px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.solution-detail-summary { font-size: 16px; color: var(--text-2); max-width: 800px; }
.solution-detail-body { display: grid; grid-template-columns: 1.7fr 1fr; gap: 46px; align-items: start; margin-top: 10px; }
.solution-points-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; }
.solution-aside { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; display: flex; flex-direction: column; gap: 12px; }
.solution-scenario { color: var(--text-2); font-size: 15px; margin-bottom: 10px; }

/* ---------- 信赖 ---------- */
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 20px; transition: all .3s ease; }
.trust-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.trust-num { display: block; font-size: 36px; font-weight: 800; color: var(--brand); }
.trust-label { display: block; margin-top: 8px; color: var(--text-2); font-size: 15px; }

/* ---------- 新闻列表 ---------- */
.news-list { display: flex; flex-direction: column; gap: 22px; max-width: 960px; margin: 0 auto; }
.news-item {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 28px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px;
    transition: all .3s ease;
}
.news-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.news-item-date { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.news-day { font-size: 15px; font-weight: 700; color: var(--brand-deep); }
.news-cat-tag { font-size: 12.5px; color: var(--brand); background: var(--brand-pale); padding: 3px 12px; border-radius: 999px; font-weight: 600; }
.news-item-title { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.news-item-title a { transition: color .2s; }
.news-item-title a:hover { color: var(--brand); }
.news-item-summary { color: var(--text-2); font-size: 15px; }
.news-item-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.news-author { font-size: 13.5px; color: var(--text-3); }
.news-link { font-size: 14px; color: var(--brand); font-weight: 600; }

/* ---------- 新闻详情 ---------- */
.article-layout { display: grid; grid-template-columns: 1.9fr 1fr; gap: 46px; align-items: start; }
.article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 38px; }
.article-lead {
    font-size: 17px;
    color: var(--brand-dark);
    background: var(--brand-pale-2);
    border-left: 4px solid var(--brand);
    padding: 16px 20px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 26px;
    font-weight: 500;
}
.article-paragraph { color: var(--text-2); font-size: 16px; margin-bottom: 18px; text-align: justify; text-indent: 2em; }
.article-tags { display: flex; gap: 10px; margin: 28px 0; flex-wrap: wrap; }
.tag { font-size: 13.5px; color: var(--brand); background: var(--brand-pale); padding: 5px 14px; border-radius: 999px; font-weight: 500; }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; border-top: 1px solid var(--line); padding-top: 26px; }
.article-nav-item { display: flex; flex-direction: column; gap: 6px; padding: 16px 18px; border-radius: var(--radius-sm); background: var(--brand-pale-2); border: 1px solid var(--line); transition: all .25s ease; }
.article-nav-item:hover { border-color: var(--brand); background: var(--brand-pale); }
.article-nav-next { text-align: right; }
.article-nav-label { font-size: 12.5px; color: var(--text-3); font-weight: 600; }
.article-nav-title { font-size: 14.5px; color: var(--brand-deep); font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-nav-item.is-disabled { opacity: .55; }
.article-back { margin-top: 28px; }

.article-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: calc(var(--header-h) + 24px); }
.side-news-list li { border-bottom: 1px dashed var(--line); }
.side-news-list li:last-child { border-bottom: none; }
.side-news-list a { display: block; padding: 12px 0; }
.side-news-list a:hover .side-news-title { color: var(--brand); }
.side-news-title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 14.5px; color: var(--text-1); font-weight: 500; line-height: 1.55; }
.side-news-date { font-size: 12.5px; color: var(--text-3); }
.side-email { font-size: 14px !important; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 46px; align-items: start; }
.contact-intro { color: var(--text-2); margin-bottom: 26px; }
.contact-list { display: flex; flex-direction: column; gap: 20px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon {
    width: 46px; height: 46px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 20px;
    border-radius: 12px;
    background: var(--brand-pale);
    flex-shrink: 0;
}
.contact-list strong { display: block; font-size: 15px; color: var(--brand-deep); margin-bottom: 2px; }
.contact-list p { color: var(--text-2); font-size: 14.5px; }

.contact-form-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 38px 34px; box-shadow: var(--shadow); }
.contact-form-tip { color: var(--text-3); font-size: 14px; margin-bottom: 22px; }
.contact-form-tip em, .contact-form label em { color: #e23c3c; font-style: normal; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field label { font-size: 14.5px; font-weight: 600; color: var(--text-1); }
.form-field input, .form-field select, .form-field textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg-soft);
    transition: all .22s ease;
    outline: none;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
    border-color: var(--brand);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(30, 111, 216, .10);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.field-error { font-size: 13px; color: #e23c3c; }
.form-privacy { font-size: 12.5px; color: var(--text-3); text-align: center; }
.form-alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14.5px;
    margin-bottom: 22px;
    font-weight: 500;
}
.form-alert-success { background: #e8f7ee; color: #1a7f47; border: 1px solid #b7e4c8; }
.form-alert-error { background: #fdecec; color: #c32b2b; border: 1px solid #f5c2c2; }

/* ---------- 商务联络（企业邮箱） ---------- */
.mail-box { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.mail-placeholder {
    min-height: 260px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background:
        linear-gradient(135deg, rgba(30, 111, 216, .06), rgba(70, 179, 245, .10)),
        repeating-linear-gradient(0deg, var(--line) 0 1px, transparent 1px 42px),
        repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 42px),
        var(--bg-soft);
    text-align: center;
    padding: 44px 24px;
}
.mail-icon { font-size: 44px; }
.mail-name { font-size: 19px; font-weight: 700; color: var(--brand-deep); }
.mail-addr { font-size: 22px; font-weight: 800; letter-spacing: .5px; word-break: break-all; }
.mail-addr a { color: var(--brand); }
.mail-addr a:hover { text-decoration: underline; }
.mail-tip { color: var(--text-3); font-size: 13.5px; max-width: 560px; }

/* ---------- 404 ---------- */
.error-section { padding: 100px 0; }
.error-inner { text-align: center; max-width: 640px; }
.error-code {
    font-size: 120px;
    font-weight: 800;
    line-height: 1;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 4px;
}
.error-title { font-size: 30px; font-weight: 800; color: var(--brand-deep); margin: 18px 0 14px; }
.error-desc { color: var(--text-2); font-size: 16px; margin-bottom: 30px; }
.error-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.error-links { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; font-size: 14px; color: var(--text-3); }
.error-links a { color: var(--brand); font-weight: 600; }
.error-links a:hover { text-decoration: underline; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--bg-deep); color: rgba(255, 255, 255, .78); }
.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
    gap: 40px;
    padding: 64px 0 46px;
}
.footer-col { min-width: 0; }
.footer-logo {
    width: 54px; height: 54px;
    object-fit: contain;
    background: #fff;
    border-radius: 14px;
    padding: 6px;
    margin-bottom: 16px;
}
.footer-name { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.footer-slogan { font-size: 13.5px; color: var(--brand-sky); margin-bottom: 12px; }
.footer-intro { font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .62); max-width: 340px; }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; position: relative; padding-bottom: 12px; }
.footer-title::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 32px; height: 3px;
    border-radius: 2px;
    background: var(--grad);
}
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, .72); transition: all .22s ease; }
.footer-links a:hover { color: #fff; padding-left: 5px; }
.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 13px;
    font-size: 14px;
    color: rgba(255, 255, 255, .72);
    word-break: break-all;
    line-height: 1.6;
}
.fc-icon { flex-shrink: 0; }
.footer-contact-list a { color: rgba(255, 255, 255, .85); }
.footer-contact-list a:hover { color: #fff; text-decoration: underline; }
.footer-mail-btn {
    display: inline-block;
    margin-top: 8px;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--grad);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(30, 111, 216, .30);
    transition: all .25s ease;
}
.footer-mail-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(30, 111, 216, .42); }

/* 通用底部导航条 */
.footer-nav-bar {
    border-top: 1px solid rgba(255, 255, 255, .10);
    border-bottom: 1px solid rgba(255, 255, 255, .10);
    background: rgba(255, 255, 255, .03);
}
.footer-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 4px 8px;
    padding: 16px 0;
}
.footer-nav-link {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 14px;
    color: rgba(255, 255, 255, .78);
    transition: all .22s ease;
}
.footer-nav-link:hover { color: #fff; background: rgba(255, 255, 255, .10); }

/* 版权与备案 */
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 16px;
    padding: 20px 0 26px;
    text-align: center;
}
.copyright, .record { font-size: 13px; color: rgba(255, 255, 255, .55); }
.record { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; }
.record-link { color: rgba(255, 255, 255, .62); }
.record-link:hover { color: #fff; text-decoration: underline; }
.record-sep { color: rgba(255, 255, 255, .28); }

/* 联系页邮箱链接 */
.contact-list a { color: var(--brand); font-weight: 600; word-break: break-all; }
.contact-list a:hover { text-decoration: underline; }

/* ---------- 回到顶部 ---------- */
.back-to-top {
    position: fixed;
    right: 26px;
    bottom: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--grad);
    color: #fff;
    font-size: 20px;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: all .3s ease;
    z-index: 90;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }

/* ---------- 滚动出现动画（仅 JS 可用时启用，保证无 JS 时内容可见） ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr; gap: 44px; }
    .hero-visual { order: -1; }
    .hero-card { max-width: 300px; }
    .cards-grid, .solution-grid, .advantage-grid, .news-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .about-intro, .service-detail-inner, .solution-detail-body, .article-layout, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .service-detail-side, .article-side { position: static; }
    .trust-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
    .nav-toggle { display: flex; }
    .site-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: #fff;
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow);
        padding: 12px 20px 22px;
        transform: translateY(-140%);
        opacity: 0;
        pointer-events: none;
        transition: all .32s ease;
        max-height: calc(100vh - var(--header-h));
        overflow-y: auto;
    }
    .site-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
    .nav-link { padding: 13px 16px; border-radius: 10px; }
    .nav-cta { margin: 14px 0 0; text-align: center; }
    .brand-name { font-size: 15px; }
    .brand-sub { font-size: 9px; letter-spacing: 1px; }
    .brand-logo { width: 40px; height: 40px; }

    .hero { padding: 64px 0 76px; }
    .hero-title { font-size: 32px; }
    .section { padding: 60px 0; }
    .section-title, .page-title { font-size: 27px; }
    .block-title { font-size: 22px; }
    .stats-grid { margin-top: -40px; }
    .stat-value { font-size: 30px; }
    .cta-title { font-size: 24px; }
    .case-grid, .case-grid-lg { grid-template-columns: 1fr; }
    .article { padding: 28px 22px; }
    .contact-form-wrap { padding: 28px 22px; }
    .article-nav { grid-template-columns: 1fr; }
    .article-nav-next { text-align: left; }
    .error-code { font-size: 88px; }
}

@media (max-width: 620px) {
    .container { padding: 0 18px; }
    .cards-grid, .solution-grid, .advantage-grid, .news-grid, .culture-grid, .team-grid, .trust-grid, .stats-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .hero-title { font-size: 26px; }
    .hero-points { gap: 14px; font-size: 13.5px; }
    .hero-actions .btn { flex: 1 1 100%; }
    .news-item { grid-template-columns: 1fr; gap: 14px; padding: 22px 20px; }
    .section-title, .page-title { font-size: 23px; }
    .cta-inner { flex-direction: column; align-items: flex-start; }
    .cta-actions { width: 100%; }
    .cta-actions .btn { flex: 1 1 auto; }
    .error-code { font-size: 68px; }
    .back-to-top { right: 16px; bottom: 18px; }
}

/* ---------- 侧边浮动在线客服 ---------- */
.float-contact {
    position: fixed;
    right: 26px;
    bottom: 92px;
    z-index: 95;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-item { position: relative; }
.fc-btn {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform .26s ease, box-shadow .26s ease;
}
.fc-btn:hover { transform: translateY(-3px); }
.fc-btn-wechat { background: linear-gradient(135deg, #2bcf6d, #12a355); }
.fc-btn-wechat.is-open { box-shadow: 0 0 0 4px rgba(43, 207, 109, .22), var(--shadow); }
.fc-btn-qq { background: linear-gradient(135deg, #12b7f5, #0a7fd4); }
.float-tip {
    position: absolute;
    right: 56px;
    top: 50%;
    transform: translateY(-50%) translateX(6px);
    padding: 6px 12px;
    border-radius: 8px;
    background: rgba(15, 34, 62, .92);
    color: #fff;
    font-size: 12.5px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all .24s ease;
}
.float-item:hover .float-tip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}
.float-panel {
    position: absolute;
    right: 58px;
    bottom: 0;
    width: 210px;
    padding: 16px;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 20px 48px rgba(10, 30, 60, .26);
    text-align: center;
}
.float-panel::after {
    content: "";
    position: absolute;
    right: -6px;
    bottom: 16px;
    width: 12px;
    height: 12px;
    background: #fff;
    transform: rotate(45deg);
}
.float-panel img {
    width: 158px;
    height: 158px;
    object-fit: contain;
    border-radius: 10px;
    display: block;
    margin: 0 auto 10px;
}
.float-panel-name { font-size: 14px; font-weight: 700; color: var(--brand-deep); margin-bottom: 4px; }
.float-panel-tip { font-size: 12px; line-height: 1.65; color: var(--text-3); }
.float-panel[hidden] { display: none; }

/* ---------- 商务联络二维码区块 ---------- */
.mail-box { display: grid; grid-template-columns: 1.6fr 1fr; }
.mail-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 36px 24px;
    text-align: center;
    background: linear-gradient(135deg, rgba(30, 111, 216, .06), rgba(70, 179, 245, .12));
    border-left: 1px solid var(--line);
}
.mail-qr img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    border-radius: 12px;
    background: #fff;
    padding: 8px;
    box-shadow: var(--shadow-sm);
}
.mail-qr-name { font-size: 15px; font-weight: 700; color: var(--brand-deep); }
.mail-qr-tip { font-size: 13px; line-height: 1.7; color: var(--text-3); max-width: 220px; }
.mail-qq-btn {
    display: inline-block;
    margin-top: 14px;
    padding: 10px 24px;
    border-radius: 999px;
    background: linear-gradient(135deg, #12b7f5, #0a7fd4);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(10, 127, 212, .30);
    transition: all .25s ease;
}
.mail-qq-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(10, 127, 212, .42); }

/* ---------- 页脚响应式 ---------- */
@media (max-width: 900px) {
    .footer-top { grid-template-columns: 1fr 1fr; gap: 34px; padding: 52px 0 38px; }
    .mail-box { grid-template-columns: 1fr; }
    .mail-qr { border-left: none; border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
    .footer-top { grid-template-columns: 1fr; gap: 28px; padding: 44px 0 32px; }
    .footer-nav { flex-direction: column; gap: 2px; }
    .footer-bottom { flex-direction: column; gap: 8px; }
    .mail-addr { font-size: 18px; }
    .float-contact { right: 16px; bottom: 78px; gap: 10px; }
    .fc-btn { width: 42px; height: 42px; font-size: 18px; }
    .float-panel { right: 52px; width: 190px; }
    .float-panel img { width: 140px; height: 140px; }
    .float-tip { display: none; }
}

/* ---------- 主流 AI 解决方案框架 ---------- */
.ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.ai-card {
    display: flex;
    flex-direction: column;
    padding: 28px 26px;
    border-radius: var(--radius-lg);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.ai-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: rgba(30, 111, 216, .32);
}
.ai-card-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.ai-icon {
    width: 54px;
    height: 54px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(30, 111, 216, .10), rgba(70, 179, 245, .16));
}
.ai-card-title { min-width: 0; }
.ai-name { font-size: 17px; font-weight: 700; color: var(--brand-deep); margin-bottom: 4px; }
.ai-en { font-size: 11.5px; color: var(--text-3); letter-spacing: .3px; }
.ai-tagline {
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--brand);
    font-weight: 600;
    background: rgba(30, 111, 216, .06);
    border-left: 3px solid var(--brand);
    border-radius: 0 8px 8px 0;
    padding: 10px 14px;
    margin-bottom: 14px;
}
.ai-summary { font-size: 13.5px; line-height: 1.85; color: var(--text-2); margin-bottom: 16px; }
.ai-abilities { list-style: none; margin-bottom: 16px; }
.ai-abilities li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 9px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-2);
}
.ai-abilities li::before {
    content: "✔";
    position: absolute;
    left: 0;
    color: var(--brand);
    font-size: 12px;
}
.ai-stacks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.ai-stack {
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 12px;
    color: var(--brand-deep);
    background: rgba(30, 111, 216, .08);
    border: 1px solid rgba(30, 111, 216, .16);
}
.ai-scene {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px dashed var(--line);
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--text-3);
}
.ai-scene-label {
    display: inline-block;
    margin-right: 8px;
    padding: 2px 9px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 600;
    color: #fff;
    background: var(--grad);
}

/* AI 项目落地四步 */
.ai-flow {
    margin-top: 46px;
    padding: 34px 30px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(30, 111, 216, .06), rgba(70, 179, 245, .12));
    border: 1px solid var(--line);
}
.ai-flow-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--brand-deep);
    text-align: center;
    margin-bottom: 26px;
}
.ai-flow-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.ai-step {
    padding: 20px 18px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.ai-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--grad);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 12px;
}
.ai-step-title { font-size: 15px; font-weight: 700; color: var(--brand-deep); margin-bottom: 8px; }
.ai-step-text { font-size: 13px; line-height: 1.8; color: var(--text-2); }

/* AI 区块响应式 */
@media (max-width: 1080px) {
    .ai-grid { grid-template-columns: repeat(2, 1fr); }
    .ai-flow-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
    .ai-grid { grid-template-columns: 1fr; gap: 20px; }
    .ai-flow-steps { grid-template-columns: 1fr; }
    .ai-flow { padding: 26px 20px; }
    .ai-card { padding: 22px 20px; }
    .ai-icon { width: 46px; height: 46px; font-size: 22px; }
}