/* ==========================================================================
   新锐智联 XINRUILINK · 门户网站样式
   品牌色系统 / 通用组件 / 响应式
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
    /* 品牌色 */
    --c-primary: #17225E;
    --c-primary-deep: #0B1440;
    --c-blue: #0482F5;
    --c-blue-soft: #4DA6F8;
    --c-teal: #23DABF;

    /* 中性色 */
    --c-text: #1A2238;
    --c-text-sub: #5A6379;
    --c-gray: #8B95A5;
    --c-border: #E8EDF5;
    --c-bg: #FFFFFF;
    --c-bg-soft: #F4F7FC;
    --c-bg-soft-2: #EDF3FC;

    /* 尺寸 */
    --container: 1200px;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --nav-h: 72px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(23, 34, 94, .05);
    --shadow: 0 8px 28px rgba(23, 34, 94, .08);
    --shadow-lg: 0 20px 56px rgba(23, 34, 94, .14);

    /* 动效 */
    --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, p, ul, ol, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }

::selection { background: var(--c-blue); color: #fff; }

/* ---------- 3. 布局 ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.section { padding: 100px 0; position: relative; }
.section--soft { background: var(--c-bg-soft); }
.section--tight { padding: 72px 0; }

/* 章节标题 */
.sec-head { max-width: 760px; margin-bottom: 56px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.sec-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--c-blue);
    margin-bottom: 16px;
}
.sec-tag::before {
    content: "";
    width: 24px;
    height: 2px;
    background: var(--c-blue);
    border-radius: 2px;
}
.sec-head--center .sec-tag::before { display: none; }

.sec-title {
    font-size: 40px;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--c-primary);
}
.sec-desc {
    margin-top: 18px;
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text-sub);
}

/* ---------- 4. 导航 ---------- */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 100;
    background: rgba(255, 255, 255, .82);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.nav.is-scrolled {
    background: rgba(255, 255, 255, .96);
    border-bottom-color: var(--c-border);
    box-shadow: 0 4px 20px rgba(23, 34, 94, .06);
}

.nav__inner {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 40px;
}

.nav__brand { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav__logo { height: 34px; width: auto; }
.nav__divider { width: 1px; height: 22px; background: var(--c-border); }
.nav__slogan {
    font-size: 13px;
    font-weight: 400;
    color: var(--c-gray);
    letter-spacing: .08em;
    white-space: nowrap;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 34px;
    margin-left: auto;
    font-size: 15px;
    font-weight: 500;
}
.nav__link {
    position: relative;
    padding: 6px 0;
    color: var(--c-text-sub);
    transition: color .25s var(--ease);
}
.nav__link::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 0; height: 2px;
    background: var(--c-blue);
    border-radius: 2px;
    transition: width .3s var(--ease);
}
.nav__link:hover { color: var(--c-primary); }
.nav__link:hover::after,
.nav__link.is-active::after { width: 100%; }
.nav__link.is-active { color: var(--c-primary); font-weight: 600; }

.nav__cta {
    margin-left: 8px;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--c-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: background .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.nav__cta:hover {
    background: var(--c-blue);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(4, 130, 245, .3);
}

/* 移动端菜单按钮 */
.nav__toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; }
.nav__toggle span { display: block; width: 20px; height: 2px; background: var(--c-primary); position: relative; border-radius: 2px; }
.nav__toggle span::before, .nav__toggle span::after {
    content: ""; position: absolute; left: 0; width: 20px; height: 2px;
    background: var(--c-primary); border-radius: 2px;
}
.nav__toggle span::before { top: -6px; }
.nav__toggle span::after { top: 6px; }

/* ---------- 5. Hero ---------- */
.hero {
    position: relative;
    padding: calc(var(--nav-h) + 96px) 0 110px;
    background: linear-gradient(135deg, #0B1440 0%, #17225E 52%, #1A2A6B 100%);
    overflow: hidden;
    isolation: isolate;
}

/* Hero 装饰层 */
.hero__deco { position: absolute; inset: 0; pointer-events: none; z-index: -1; }
.hero__deco::before {
    content: "";
    position: absolute;
    top: -280px; right: -180px;
    width: 760px; height: 760px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 130, 245, .34) 0%, transparent 66%);
}
.hero__deco::after {
    content: "";
    position: absolute;
    bottom: -300px; left: -200px;
    width: 680px; height: 680px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(35, 218, 191, .22) 0%, transparent 68%);
}
.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 78%);
}
.hero__ring {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 50%;
}
.hero__ring--1 { width: 420px; height: 420px; top: 60px; right: 8%; }
.hero__ring--2 { width: 620px; height: 620px; top: -40px; right: 2%; border-color: rgba(35, 218, 191, .14); }

.hero__inner {
    display: grid;
    grid-template-columns: 1.02fr .98fr;
    gap: 64px;
    align-items: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 16px 7px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .14);
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, .82);
    letter-spacing: .04em;
    margin-bottom: 28px;
}
.hero__badge i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 46px;
    height: 22px;
    padding: 0 9px;
    border-radius: 999px;
    background: var(--c-teal);
    color: #06231E;
    font-style: normal;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .02em;
}

.hero__title {
    font-size: 56px;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -.025em;
    color: #fff;
}
.hero__title em {
    font-style: normal;
    background: linear-gradient(96deg, #4DA6F8 0%, #23DABF 96%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__sub {
    margin-top: 24px;
    max-width: 520px;
    font-size: 17px;
    line-height: 1.85;
    color: rgba(255, 255, 255, .7);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 52px;
    padding: 0 32px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    transition: transform .25s var(--ease), box-shadow .25s var(--ease),
        background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn--primary {
    background: linear-gradient(96deg, #0482F5, #2E9BFF);
    color: #fff;
    box-shadow: 0 10px 28px rgba(4, 130, 245, .34);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(4, 130, 245, .44); }
.btn--ghost {
    border: 1px solid rgba(255, 255, 255, .28);
    color: #fff;
    background: rgba(255, 255, 255, .04);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .5); transform: translateY(-2px); }
.btn--dark {
    background: var(--c-primary);
    color: #fff;
    box-shadow: 0 10px 28px rgba(23, 34, 94, .26);
}
.btn--dark:hover { background: var(--c-blue); transform: translateY(-2px); box-shadow: 0 16px 36px rgba(4, 130, 245, .34); }
.btn--line {
    border: 1px solid var(--c-border);
    color: var(--c-primary);
    background: #fff;
}
.btn--line:hover { border-color: var(--c-blue); color: var(--c-blue); transform: translateY(-2px); }

/* Hero 右侧视觉 */
.hero__visual { position: relative; }
.hero__shot {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 32px 80px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .12);
    transform: perspective(1200px) rotateY(-4deg) rotateX(1.5deg);
    transition: transform .6s var(--ease);
}
.hero__shot:hover { transform: perspective(1200px) rotateY(0deg) rotateX(0deg); }
.hero__shot img { width: 100%; }

/* 悬浮数据卡片 */
.hero__float {
    position: absolute;
    left: -34px;
    bottom: 36px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    border-radius: 14px;
    background: rgba(255, 255, 255, .97);
    box-shadow: 0 18px 44px rgba(0, 0, 0, .28);
    animation: floatY 5s ease-in-out infinite;
}
.hero__float-icon {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--c-blue), var(--c-teal));
    color: #fff;
}
.hero__float-num { font-size: 20px; font-weight: 700; color: var(--c-primary); line-height: 1.2; }
.hero__float-label { font-size: 12px; color: var(--c-gray); line-height: 1.4; }

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ---------- 6. 数据成绩条 ---------- */
.stats {
    position: relative;
    margin-top: -52px;
    z-index: 3;
}
.stats__inner {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 36px 20px;
}
.stats__item { text-align: center; position: relative; }
.stats__item + .stats__item::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 1px; height: 44px;
    background: var(--c-border);
}
.stats__num {
    font-size: 38px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -.02em;
    color: var(--c-primary);
    font-variant-numeric: tabular-nums;
}
.stats__num span { font-size: 20px; font-weight: 600; color: var(--c-blue); margin-left: 2px; }
.stats__label { margin-top: 8px; font-size: 14px; color: var(--c-text-sub); }

/* ---------- 7. 服务卡片 ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.card {
    position: relative;
    padding: 34px 30px 30px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-blue), var(--c-teal));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .4s var(--ease);
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.card:hover::before { transform: scaleX(1); }

.card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 54px; height: 54px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(4, 130, 245, .1), rgba(35, 218, 191, .12));
    color: var(--c-blue);
    margin-bottom: 24px;
    transition: background .35s var(--ease), color .35s var(--ease);
}
.card:hover .card__icon { background: linear-gradient(135deg, var(--c-blue), var(--c-teal)); color: #fff; }

.card__title { font-size: 19px; font-weight: 700; color: var(--c-primary); }
.card__text { margin-top: 12px; font-size: 14.5px; line-height: 1.8; color: var(--c-text-sub); }
.card__list { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.card__list li {
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--c-bg-soft);
    font-size: 12.5px;
    color: var(--c-text-sub);
}

/* ---------- 8. 平台产品 ---------- */
.platform { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.pcard {
    position: relative;
    padding: 40px 34px 36px;
    border-radius: var(--radius-lg);
    background: #fff;
    border: 1px solid var(--c-border);
    overflow: hidden;
    transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.pcard:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.pcard__glow {
    position: absolute;
    top: -70px; right: -70px;
    width: 190px; height: 190px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 130, 245, .16), transparent 68%);
    transition: transform .5s var(--ease);
}
.pcard:hover .pcard__glow { transform: scale(1.35); }

.pcard__code {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .1em;
    color: var(--c-blue);
    margin-bottom: 6px;
}
.pcard__name { font-size: 24px; font-weight: 700; color: var(--c-primary); letter-spacing: -.01em; }
.pcard__type { margin-top: 6px; font-size: 14px; color: var(--c-gray); }
.pcard__divider { height: 1px; background: var(--c-border); margin: 24px 0; }
.pcard__desc { font-size: 14.5px; line-height: 1.8; color: var(--c-text-sub); }
.pcard__feat { margin-top: 20px; display: grid; gap: 10px; }
.pcard__feat li {
    position: relative;
    padding-left: 18px;
    font-size: 14px;
    color: var(--c-text-sub);
}
.pcard__feat li::before {
    content: "";
    position: absolute;
    left: 0; top: 10px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-teal);
}

/* ---------- 9. 行业解决方案 ---------- */
.industry { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.icard {
    padding: 30px 24px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--c-border);
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.icard:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(4, 130, 245, .4); }
.icard__num {
    font-size: 13px;
    font-weight: 700;
    color: var(--c-blue);
    letter-spacing: .06em;
}
.icard__title { margin-top: 14px; font-size: 17px; font-weight: 700; color: var(--c-primary); }
.icard__text { margin-top: 10px; font-size: 13.5px; line-height: 1.8; color: var(--c-text-sub); }

/* ---------- 10. 案例 ---------- */
.cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.case {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--c-border);
    transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.case:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #0B1440; }
.case__media img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform .7s var(--ease);
}
.case:hover .case__media img { transform: scale(1.05); }
.case__media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 20, 64, .5), transparent 52%);
}
.case__cat {
    position: absolute;
    top: 16px; left: 16px;
    z-index: 2;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(4, 130, 245, .92);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    backdrop-filter: blur(6px);
}
.case__body { padding: 24px 26px 28px; }
.case__title { font-size: 18px; font-weight: 700; color: var(--c-primary); }
.case__meta { margin-top: 8px; font-size: 13.5px; color: var(--c-gray); }

/* 窄幅大屏图卡片（横向留白展示） */
.case--wide { grid-column: 1 / -1; }
.case--wide .case__media { aspect-ratio: 21 / 6; }
.case--wide .case__media img { object-fit: contain; background: #0B1440; }

/* 移动端案例（左侧手机截图 + 右侧说明）—— 备用布局，切换竖版截图案例时启用 */
.case--showcase {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 400px 1fr;
    align-items: stretch;
}
.case--showcase .case__media {
    aspect-ratio: auto;
    min-height: 380px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 40px 40px 0;
    background: linear-gradient(158deg, #0B1440 0%, #17225E 56%, #1A2A6B 100%);
}
.case--showcase .case__media::before {
    content: "";
    position: absolute;
    top: -80px; right: -60px;
    width: 260px; height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 130, 245, .3), transparent 68%);
}
.case--showcase .case__media::after { display: none; }
.case--showcase .case__media img {
    position: relative;
    z-index: 1;
    width: auto;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -10px 44px rgba(0, 0, 0, .52);
    transition: transform .6s var(--ease);
}
.case--showcase:hover .case__media img { transform: translateY(-8px) scale(1.02); }
.case--showcase .case__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 44px 48px;
}
.case__desc {
    margin-top: 16px;
    font-size: 14.5px;
    line-height: 1.85;
    color: var(--c-text-sub);
    max-width: 460px;
}

/* ---------- 11. 合作流程 ---------- */
.flow {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
    counter-reset: step;
}
.flow__item { position: relative; text-align: center; padding-top: 52px; }
.flow__item::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--c-border);
    color: var(--c-blue);
    font-size: 13px;
    font-weight: 700;
    z-index: 2;
    transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.flow__item::after {
    content: "";
    position: absolute;
    top: 20px; left: calc(50% + 24px);
    width: calc(100% - 48px);
    height: 1px;
    background: var(--c-border);
}
.flow__item:last-child::after { display: none; }
.flow__item:hover::before { background: var(--c-blue); border-color: var(--c-blue); color: #fff; }
.flow__title { font-size: 15px; font-weight: 700; color: var(--c-primary); }
.flow__text { margin-top: 6px; font-size: 12.5px; line-height: 1.7; color: var(--c-gray); }

/* ---------- 12. CTA ---------- */
.cta {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(120deg, #0B1440 0%, #17225E 58%, #1C2C70 100%);
    overflow: hidden;
    text-align: center;
}
.cta::before {
    content: "";
    position: absolute;
    top: -180px; left: 50%;
    transform: translateX(-50%);
    width: 900px; height: 500px;
    background: radial-gradient(ellipse, rgba(4, 130, 245, .28), transparent 68%);
    pointer-events: none;
}
.cta__title { position: relative; font-size: 38px; font-weight: 700; color: #fff; letter-spacing: -.02em; }
.cta__text { position: relative; margin: 18px auto 36px; max-width: 560px; font-size: 16px; line-height: 1.85; color: rgba(255, 255, 255, .68); }
.cta__actions { position: relative; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 13. 页脚 ---------- */
.footer { background: #0A1235; color: rgba(255, 255, 255, .62); padding: 68px 0 0; }
.footer__top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 52px;
}
.footer__logo { height: 34px; margin-bottom: 20px; filter: brightness(0) invert(1); opacity: .95; }
.footer__desc { font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer__title { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 18px; letter-spacing: .04em; }
.footer__list { display: grid; gap: 11px; font-size: 14px; }
.footer__list a { transition: color .25s var(--ease); }
.footer__list a:hover { color: var(--c-teal); }
.footer__contact li { display: flex; gap: 10px; font-size: 14px; line-height: 1.7; }
.footer__contact svg { flex-shrink: 0; margin-top: 4px; opacity: .55; }
.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    padding: 22px 0 26px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    font-size: 13px;
    color: rgba(255, 255, 255, .42);
}
.footer__legal {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}
.footer__icp { transition: color .25s var(--ease); }
.footer__icp:hover { color: var(--c-teal); }

/* ---------- 14. 滚动渐显 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
    will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .hero__float { animation: none; }
    html { scroll-behavior: auto; }
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1100px) {
    .nav__slogan { display: none; }
    .nav__menu { gap: 24px; }
    .hero__inner { grid-template-columns: 1fr; gap: 52px; }
    .hero__title { font-size: 46px; }
    .hero__shot { transform: none; }
    .hero__float { left: 16px; bottom: 16px; }
    .hero__ring { display: none; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .platform { grid-template-columns: repeat(2, 1fr); }
    .industry { grid-template-columns: repeat(3, 1fr); }
    .flow { grid-template-columns: repeat(4, 1fr); row-gap: 34px; }
    .flow__item::after { display: none; }
    .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 860px) {
    .nav__menu { display: none; }
    .nav__toggle { display: flex; margin-left: auto; }
    .nav__inner { gap: 16px; }

    .nav.is-open .nav__menu {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        position: absolute;
        top: var(--nav-h); left: 0; right: 0;
        padding: 16px 24px 24px;
        background: #fff;
        border-bottom: 1px solid var(--c-border);
        box-shadow: 0 16px 32px rgba(23, 34, 94, .1);
    }
    .nav.is-open .nav__link { padding: 12px 0; border-bottom: 1px solid var(--c-bg-soft); }
    .nav.is-open .nav__link::after { display: none; }
    .nav.is-open .nav__cta { margin: 12px 0 0; text-align: center; }

    .section { padding: 72px 0; }
    .sec-title { font-size: 30px; }
    .hero { padding: calc(var(--nav-h) + 64px) 0 88px; }
    .hero__title { font-size: 38px; }
    .stats__inner { grid-template-columns: repeat(2, 1fr); gap: 28px 0; padding: 30px 12px; }
    .stats__item + .stats__item::before { display: none; }
    .stats__item:nth-child(even)::before { display: block; }
    .stats__item:last-child { grid-column: 1 / -1; }
    .grid-3, .grid-2, .platform, .industry, .cases { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr; }
    .flow { grid-template-columns: repeat(2, 1fr); }
    .case--wide .case__media { aspect-ratio: 16 / 9; }
    .case--showcase { grid-template-columns: 1fr; }
    .case--showcase .case__media { min-height: 320px; padding: 32px 32px 0; }
    .case--showcase .case__media img { max-height: 320px; }
    .case--showcase .case__body { padding: 28px 26px 34px; }
    .cta__title { font-size: 28px; }
    .footer__top { grid-template-columns: 1fr; gap: 34px; }
    .footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .container { padding: 0 18px; }
    .hero__title { font-size: 32px; }
    .sec-title { font-size: 26px; }
    .btn { height: 48px; padding: 0 24px; font-size: 14px; }
    .stats__num { font-size: 30px; }
}

/* ==========================================================================
   16. 内页组件（page-hero / 筛选 / 灯箱 / 资质 / 表格 / 表单）
   ========================================================================== */

/* ---------- 内页头部 ---------- */
.page-hero {
    position: relative;
    padding: calc(var(--nav-h) + 88px) 0 84px;
    background: linear-gradient(135deg, #0B1440 0%, #17225E 55%, #1A2A6B 100%);
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 88% 100% at 50% 0%, #000 10%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 88% 100% at 50% 0%, #000 10%, transparent 80%);
    pointer-events: none;
}
.page-hero::after {
    content: "";
    position: absolute;
    top: -220px; right: -140px;
    width: 620px; height: 620px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 130, 245, .3), transparent 66%);
    pointer-events: none;
}
.page-hero__inner { position: relative; z-index: 1; max-width: 780px; }
.page-hero__tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--c-teal);
    margin-bottom: 18px;
}
.page-hero__title {
    font-size: 46px;
    line-height: 1.24;
    font-weight: 700;
    letter-spacing: -.02em;
    color: #fff;
}
.page-hero__desc {
    margin-top: 20px;
    font-size: 16.5px;
    line-height: 1.85;
    color: rgba(255, 255, 255, .68);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 30px;
    font-size: 13.5px;
    color: rgba(255, 255, 255, .45);
}
.breadcrumb a { transition: color .25s var(--ease); }
.breadcrumb a:hover { color: var(--c-teal); }
.breadcrumb span { color: rgba(255, 255, 255, .78); }

/* ---------- 筛选标签 ---------- */
.filter {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 44px;
}
.filter__btn {
    padding: 9px 22px;
    border-radius: 999px;
    border: 1px solid var(--c-border);
    background: #fff;
    font-size: 14px;
    color: var(--c-text-sub);
    transition: all .28s var(--ease);
}
.filter__btn:hover { border-color: var(--c-blue); color: var(--c-blue); }
.filter__btn.is-active {
    background: var(--c-primary);
    border-color: var(--c-primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(23, 34, 94, .22);
}

/* 案例隐藏态（筛选） */
.case.is-hidden { display: none; }

/* ---------- 灯箱 ---------- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 48px 32px;
    background: rgba(6, 10, 30, .94);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.lightbox.is-open { display: flex; }
.lightbox__img {
    max-width: 92vw;
    max-height: 84vh;
    border-radius: 10px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, .6);
}
.lightbox__cap {
    position: absolute;
    left: 0; right: 0; bottom: 26px;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, .72);
}
.lightbox__close {
    position: absolute;
    top: 22px; right: 26px;
    width: 44px; height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    color: #fff;
    transition: background .25s var(--ease);
}
.lightbox__close:hover { background: rgba(255, 255, 255, .22); }

/* ---------- 竖版案例卡 ---------- */
.case--vertical .case__media {
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 32px 32px 0;
    background: linear-gradient(158deg, #0B1440, #17225E 58%, #1A2A6B);
}
.case--vertical .case__media::after { display: none; }
.case--vertical .case__media img {
    width: auto;
    height: auto;
    max-height: 100%;
    object-fit: contain;
    border-radius: 14px 14px 0 0;
    box-shadow: 0 -8px 36px rgba(0, 0, 0, .5);
}

/* ---------- 资质 / 知识产权 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.cert {
    padding: 28px 20px;
    text-align: center;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.cert:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(4, 130, 245, .35); }
.cert__code { font-size: 16px; font-weight: 700; color: var(--c-primary); letter-spacing: -.01em; }
.cert__name { margin-top: 10px; font-size: 13px; line-height: 1.6; color: var(--c-gray); }

.ip-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ip-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: 10px;
    font-size: 14px;
    color: var(--c-text-sub);
    transition: border-color .28s var(--ease), color .28s var(--ease);
}
.ip-item::before {
    content: "";
    flex-shrink: 0;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-teal);
}
.ip-item:hover { border-color: rgba(4, 130, 245, .35); color: var(--c-text); }

/* ---------- 业务领域表格 ---------- */
.biz-wrap {
    overflow-x: auto;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
}
.biz-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.biz-table th {
    padding: 20px 26px;
    text-align: left;
    font-size: 14px;
    font-weight: 700;
    color: var(--c-primary);
    background: var(--c-bg-soft);
    border-bottom: 1px solid var(--c-border);
    white-space: nowrap;
}
.biz-table th:first-child { width: 120px; }
.biz-table td {
    padding: 22px 26px;
    font-size: 14.5px;
    line-height: 1.8;
    color: var(--c-text-sub);
    border-bottom: 1px solid var(--c-border);
    vertical-align: top;
}
.biz-table tr:last-child td { border-bottom: 0; }
.biz-table td:first-child {
    font-weight: 700;
    color: var(--c-primary);
    white-space: nowrap;
    vertical-align: middle;
}
.biz-table em {
    font-style: normal;
    color: var(--c-blue);
}

/* ---------- 联系方式 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: start; }
.contact-card {
    padding: 40px 38px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
}
.contact-item { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--c-border); }
.contact-item:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-item__icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(4, 130, 245, .1), rgba(35, 218, 191, .12));
    color: var(--c-blue);
}
.contact-item__label { font-size: 13px; color: var(--c-gray); }
.contact-item__value { margin-top: 6px; font-size: 15.5px; line-height: 1.7; color: var(--c-text); font-weight: 500; }

/* ---------- 表单 ---------- */
.form { display: grid; gap: 18px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form__field { display: grid; gap: 8px; }
.form__label { font-size: 13.5px; font-weight: 600; color: var(--c-text); }
.form__label span { color: #E5484D; margin-left: 2px; }
.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: 13px 16px;
    font-family: inherit;
    font-size: 14.5px;
    color: var(--c-text);
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: 10px;
    outline: none;
    transition: border-color .25s var(--ease);
    appearance: none;
}
.form__input::placeholder,
.form__textarea::placeholder { color: var(--c-gray); }
.form__input:focus,
.form__textarea:focus,
.form__select:focus { border-color: var(--c-blue); box-shadow: none; }
.form__textarea { min-height: 132px; resize: vertical; line-height: 1.7; }
.form__select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5L6 6.5l5-5' stroke='%238B95A5' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
.form__hint { font-size: 12.5px; color: var(--c-gray); }
.form__submit { margin-top: 6px; width: 100%; }

/* ---------- 联系方式补充响应式 ---------- */
@media (max-width: 1100px) {
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .ip-list { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .page-hero { padding: calc(var(--nav-h) + 60px) 0 60px; }
    .page-hero__title { font-size: 30px; }
    .page-hero__desc { font-size: 15px; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .ip-list { grid-template-columns: 1fr; }
    .form__row { grid-template-columns: 1fr; }
    .contact-card { padding: 28px 22px; }
    .lightbox { padding: 24px 16px; }
    .lightbox__close { top: 12px; right: 12px; }
}

/* ==========================================================================
   17. 行业解决方案区块（交替图文）
   ========================================================================== */
.solution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    padding: 58px 0;
    border-bottom: 1px solid var(--c-border);
}
.solution:last-child { border-bottom: 0; padding-bottom: 0; }
.solution:first-child { padding-top: 0; }
.solution--rev .solution__media { order: 2; }
.solution__media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 16 / 10;
    background: #0B1440;
}
.solution__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .7s var(--ease);
}
.solution:hover .solution__media img { transform: scale(1.04); }
.solution__num {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .1em;
    color: var(--c-blue);
}
.solution__title {
    margin-top: 12px;
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--c-primary);
}
.solution__desc {
    margin-top: 16px;
    font-size: 15.5px;
    line-height: 1.85;
    color: var(--c-text-sub);
}
.solution__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.solution__tags li {
    padding: 7px 16px;
    border-radius: 999px;
    background: var(--c-bg-soft);
    border: 1px solid transparent;
    font-size: 13.5px;
    color: var(--c-text-sub);
    transition: all .28s var(--ease);
}
.solution__tags li:hover {
    background: #fff;
    border-color: rgba(4, 130, 245, .35);
    color: var(--c-blue);
}

@media (max-width: 860px) {
    .solution {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 40px 0;
    }
    .solution--rev .solution__media { order: 0; }
    .solution__title { font-size: 24px; }
}

/* ==========================================================================
   18. 关于我们（简介 + 数据卡）
   ========================================================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1.12fr .88fr;
    gap: 60px;
    align-items: center;
}
.about-intro__text p {
    margin-top: 18px;
    font-size: 15.5px;
    line-height: 1.9;
    color: var(--c-text-sub);
}
.about-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.fact {
    padding: 28px 24px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.fact:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(4, 130, 245, .35); }
.fact__num {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -.02em;
    color: var(--c-primary);
    font-variant-numeric: tabular-nums;
}
.fact__num span { font-size: 16px; font-weight: 600; color: var(--c-blue); margin-left: 2px; }
.fact__label { margin-top: 8px; font-size: 13.5px; color: var(--c-text-sub); }

@media (max-width: 1100px) {
    .about-intro { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 480px) {
    .about-facts { grid-template-columns: 1fr; }
}

/* 行业解决方案：装饰型媒体块（无实拍图时使用） */
.solution__deco {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(158deg, #0B1440 0%, #17225E 58%, #1A2A6B 100%);
    overflow: hidden;
}
.solution__deco::before {
    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: 48px 48px;
    mask-image: radial-gradient(circle at 50% 50%, #000 10%, transparent 72%);
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 10%, transparent 72%);
}
.solution__deco::after {
    content: "";
    position: absolute;
    width: 320px; height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(35, 218, 191, .22), transparent 66%);
}
.solution__deco svg {
    position: relative;
    z-index: 1;
    width: 92px;
    height: 92px;
    color: rgba(255, 255, 255, .85);
}

/* 计数数字继承父级字号与颜色（单位 span 保持小号蓝色） */
.stats__num span[data-count],
.fact__num span[data-count] {
    font-size: inherit;
    font-weight: inherit;
    color: inherit;
    margin-left: 0;
}

/* ==========================================================================
   19. 联系我们 · 办公地点地图定位卡
   ========================================================================== */
.map-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}

.map-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #0B1440;
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow);
    transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.map-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.map-card__media {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}
.map-card__media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .8s var(--ease);
}
.map-card:hover .map-card__media img { transform: scale(1.035); }

/* 引导线（由脚本按卡片实际位置绘制） */
.map-card__leader {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

/* 图上信息浮层（悬于地图之上，由引导线指向定位针） */
.map-card__info {
    position: absolute;
    left: 3%;
    bottom: 3.6%;
    width: 52%;
    padding: 12px 15px 11px;
    border-radius: 12px;
    background: rgba(10, 18, 52, .9);
    border: 1px solid rgba(255, 255, 255, .18);
    box-shadow: 0 16px 40px rgba(4, 9, 28, .45);
    z-index: 3;
}

.map-card__city {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .01em;
    color: #fff;
}
.map-card__city em {
    font-style: normal;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .38);
}
.map-card__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--c-teal);
    box-shadow: 0 0 0 4px rgba(35, 218, 191, .18);
    flex-shrink: 0;
}

.map-card__addr {
    margin-top: 7px;
    font-size: 13px;
    line-height: 1.6;
    color: rgba(255, 255, 255, .82);
}

.map-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 3px 14px;
    margin-top: 9px;
    padding-top: 9px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: 12px;
    color: rgba(255, 255, 255, .58);
}

/* 表单容器：与上方地图区同宽 */
.contact-card--form { width: 100%; }

/* 两张地图始终左右并排，仅手机窄屏堆叠 */
@media (max-width: 680px) {
    .map-grid { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 1100px) {
    .map-card__info { width: 61%; padding: 12px 14px 11px; }
    .map-card__city { font-size: 13.5px; }
    .map-card__addr { font-size: 12px; line-height: 1.55; margin-top: 7px; }
    .map-card__meta { font-size: 11px; gap: 3px 12px; margin-top: 9px; padding-top: 9px; }
}

@media (max-width: 860px) {
    .contact-card--form { padding: 28px 22px; }
}