:root {
    --black: #07111d;
    --navy: #0b1b2d;
    --blue: #2267ff;
    --cyan: #19d7ff;
    --green: #38e8b6;
    --red: #ff3d3d;
    --ink: #101a2b;
    --body: #53647a;
    --muted: #91a3b7;
    --line: #dfe8f2;
    --surface: #f4f7fb;
    --white: #fff;
    --shadow: 0 24px 72px rgba(8, 28, 54, .16);
}

* {
    box-sizing: border-box;
    min-width: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    width: 100%;
    overflow-x: hidden;
    color: var(--ink);
    background: var(--surface);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.65;
}

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

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

.wrap {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(7, 17, 29, .92);
    border-bottom: 1px solid rgba(255,255,255,.08);
    backdrop-filter: blur(16px);
}

.nav-wrap {
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: 18px;
    font-weight: 900;
}

.brand-mark {
    width: 30px;
    height: 30px;
    display: inline-block;
    border-radius: 8px;
    background:
        linear-gradient(135deg, transparent 0 36%, var(--cyan) 36% 58%, transparent 58%),
        linear-gradient(45deg, var(--green) 0 36%, #fff 36% 64%, var(--blue) 64%);
    transform: rotate(45deg);
}

.main-nav {
    display: flex;
    gap: 32px;
    color: #dce8f5;
    font-size: 15px;
}

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

.nav-phone {
    height: 40px;
    display: inline-flex;
    align-items: center;
    padding: 0 18px;
    border-radius: 999px;
    color: #05131f;
    background: var(--green);
    font-weight: 900;
}

.hero {
    position: relative;
    overflow: hidden;
    color: #edf7ff;
    background:
        radial-gradient(circle at 74% 18%, rgba(25, 215, 255, .28), transparent 30%),
        radial-gradient(circle at 8% 20%, rgba(34, 103, 255, .24), transparent 32%),
        linear-gradient(135deg, #07111d 0%, #0a1e35 48%, #082e42 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    opacity: .2;
    background-image:
        linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
}

.hero-grid {
    position: relative;
    min-height: 720px;
    display: grid;
    grid-template-columns: .94fr 1.06fr;
    gap: 68px;
    align-items: center;
    padding: 92px 0 108px;
}

.eyebrow,
.label {
    margin: 0;
    color: var(--cyan);
    font-size: 14px;
    font-weight: 900;
    letter-spacing: .02em;
    overflow-wrap: anywhere;
}

.hero h1 {
    max-width: 720px;
    margin: 22px 0;
    color: #fff;
    font-size: 58px;
    line-height: 1.08;
    letter-spacing: 0;
}

.hero h1 span {
    display: block;
}

.hero-lead {
    max-width: 650px;
    margin: 0;
    color: #c5d7e8;
    font-size: 18px;
    overflow-wrap: anywhere;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.btn {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 900;
    transition: transform .2s ease, box-shadow .2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn.primary {
    color: #05131f;
    background: var(--green);
    box-shadow: 0 18px 44px rgba(56, 232, 182, .22);
}

.btn.ghost {
    color: #e9f7ff;
    border: 1px solid rgba(255,255,255,.24);
    background: rgba(255,255,255,.07);
}

.btn.outline {
    color: #102033;
    border: 1px solid #d7e4f1;
    background: #fff;
}

.hero-proof {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.hero-proof span {
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 999px;
    color: #cddced;
    background: rgba(255,255,255,.06);
    font-size: 14px;
}

.hero-system {
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 22px;
    overflow: hidden;
    background:
        linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(145deg, rgba(14,36,61,.95), rgba(6,18,34,.93));
    background-size: 30px 30px, 30px 30px, auto;
    box-shadow: var(--shadow);
}

.system-head {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 0 24px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.system-head strong {
    color: #fff;
    font-size: 18px;
}

.system-head span {
    color: #93aec6;
    font-size: 13px;
}

.system-board {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 26px;
}

.system-board article {
    min-height: 176px;
    padding: 22px;
    border: 1px solid rgba(255,255,255,.11);
    border-radius: 16px;
    background: rgba(255,255,255,.055);
}

.system-board i {
    color: var(--green);
    font-style: normal;
    font-size: 22px;
    font-weight: 900;
}

.system-board h2 {
    margin: 16px 0 8px;
    color: #fff;
    font-size: 22px;
    overflow-wrap: anywhere;
}

.system-board p {
    margin: 0;
    color: #aec1d4;
    font-size: 14px;
    overflow-wrap: anywhere;
}

.system-footer {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 0 26px 26px;
}

.system-footer span {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    color: #cdeeff;
    background: rgba(25, 215, 255, .08);
    font-size: 13px;
    font-weight: 900;
}

.metric-strip {
    position: relative;
    z-index: 3;
    margin-top: -44px;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    overflow: hidden;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 18px 56px rgba(14,37,68,.14);
}

.metrics div {
    padding: 28px 24px;
    border-right: 1px solid #edf2f7;
}

.metrics div:last-child {
    border-right: 0;
}

.metrics strong {
    display: block;
    color: #082a50;
    font-size: 26px;
}

.metrics span {
    display: block;
    margin-top: 8px;
    color: var(--body);
}

.section {
    padding: 96px 0;
}

.section-head {
    max-width: 780px;
    margin: 0 auto 42px;
    text-align: center;
}

.section-head.split {
    max-width: none;
    display: grid;
    grid-template-columns: 1fr .72fr;
    gap: 56px;
    align-items: end;
    text-align: left;
}

.section-head.left {
    margin: 0;
    text-align: left;
}

.section-head h2,
.brief-grid h2 {
    margin: 10px 0 14px;
    color: var(--ink);
    font-size: 38px;
    line-height: 1.22;
}

.section-head p,
.brief-grid p {
    margin: 0;
    color: var(--body);
    font-size: 17px;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.capability-grid article {
    min-height: 360px;
    padding: 28px;
    border: 1px solid #e1ebf5;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 12px 34px rgba(14,37,68,.06);
}

.capability-grid span {
    color: var(--blue);
    font-weight: 900;
}

.capability-grid h3 {
    margin: 18px 0 12px;
    color: var(--ink);
    font-size: 24px;
}

.capability-grid p {
    margin: 0 0 24px;
    color: var(--body);
}

.capability-grid b {
    color: #173c61;
    font-size: 14px;
}

.dark-section {
    color: #edf7ff;
    background:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(135deg, #07111d, #0b2f4a);
    background-size: 36px 36px, 36px 36px, auto;
}

.dark-section .section-head h2 {
    color: #fff;
}

.dark-section .section-head p {
    color: #b7c8da;
}

.industry-grid {
    display: grid;
    grid-template-columns: .85fr 1.15fr;
    gap: 58px;
    align-items: start;
}

.industry-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.industry-list div {
    min-height: 124px;
    padding: 22px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 16px;
    background: rgba(255,255,255,.065);
}

.industry-list b {
    display: block;
    color: #fff;
    font-size: 18px;
}

.industry-list span {
    display: block;
    margin-top: 8px;
    color: #b7c8da;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.case-card {
    overflow: hidden;
    border: 1px solid #e1ebf5;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 12px 34px rgba(14,37,68,.08);
}

.case-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: #dce8f5;
}

.case-card div {
    padding: 22px;
}

.case-card small {
    color: var(--blue);
    font-weight: 900;
}

.case-card h3 {
    margin: 8px 0;
    color: var(--ink);
    font-size: 20px;
    line-height: 1.35;
}

.case-card p {
    display: -webkit-box;
    min-height: 52px;
    margin: 0;
    overflow: hidden;
    color: var(--body);
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.center-action {
    margin-top: 34px;
    text-align: center;
}

.delivery {
    background:
        linear-gradient(rgba(36,102,170,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(36,102,170,.06) 1px, transparent 1px),
        #edf4fb;
    background-size: 28px 28px, 28px 28px, auto;
}

.delivery-line {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.delivery-line article {
    padding: 24px;
    border: 1px solid #dde8f4;
    border-radius: 16px;
    background: #fff;
}

.delivery-line span {
    color: var(--blue);
    font-size: 22px;
    font-weight: 900;
}

.delivery-line h3 {
    margin: 14px 0 8px;
    color: var(--ink);
}

.delivery-line p {
    margin: 0;
    color: var(--body);
}

.brief-section {
    color: #edf7ff;
    background:
        radial-gradient(circle at 86% 8%, rgba(56,232,182,.18), transparent 30%),
        linear-gradient(135deg, #07111d, #0d314a);
}

.brief-grid {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 56px;
    align-items: center;
}

.brief-grid h2 {
    color: #fff;
}

.brief-grid p {
    color: #b8cce0;
}

.brief-grid p a {
    color: var(--green);
    font-weight: 900;
}

.brief-form {
    display: grid;
    gap: 14px;
    padding: 28px;
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 16px;
    background: rgba(255,255,255,.08);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.brief-form label {
    display: grid;
    gap: 8px;
    color: #d8e7f7;
    font-weight: 800;
}

.brief-form input,
.brief-form select,
.brief-form textarea {
    width: 100%;
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 8px;
    padding: 12px 14px;
    color: #fff;
    background: rgba(4,14,26,.58);
    font: inherit;
}

.brief-form option {
    color: var(--ink);
}

.brief-form textarea {
    resize: vertical;
}

.brief-form button {
    height: 50px;
    border: 0;
    border-radius: 999px;
    color: #06111f;
    background: var(--green);
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}

.site-footer {
    color: #b6c6d8;
    background: #07111d;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .8fr 1fr;
    gap: 44px;
    padding: 54px 0;
}

.footer-grid strong,
.footer-grid b {
    display: block;
    margin-bottom: 12px;
    color: #fff;
    font-size: 18px;
}

.footer-grid a,
.footer-grid p {
    display: block;
    margin: 6px 0;
}

.copyright {
    padding: 18px 20px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,.08);
    color: #8094aa;
}

@media (max-width: 1100px) {
    .main-nav {
        display: none;
    }

    .hero-grid,
    .section-head.split,
    .industry-grid,
    .brief-grid {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 760px) {
    .wrap {
        width: calc(100% - 28px);
        max-width: calc(100vw - 28px);
    }

    .nav-wrap {
        height: 64px;
    }

    .brand {
        font-size: 16px;
    }

    .brand-mark {
        width: 24px;
        height: 24px;
    }

    .nav-phone {
        display: none;
    }

    .hero-grid {
        min-height: auto;
        gap: 28px;
        padding: 50px 0 78px;
        max-width: calc(100vw - 28px);
        overflow: hidden;
    }

    .hero-copy,
    .hero h1,
    .hero-lead,
    .eyebrow {
        max-width: calc(100vw - 28px);
        word-break: break-all;
    }

    .hero h1 {
        font-size: 32px;
        line-height: 1.18;
    }

    .hero-lead {
        font-size: 16px;
    }

    .hero-system {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        border-radius: 18px;
    }

    .hero-actions {
        display: grid;
        grid-template-columns: 1fr;
        max-width: 220px;
    }

    .hero-proof {
        display: grid;
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .hero-proof span {
        border-radius: 18px;
    }

    .system-head {
        display: block;
        padding: 18px;
    }

    .system-head span {
        display: block;
        margin-top: 4px;
    }

    .system-board,
    .system-footer,
    .metrics,
    .capability-grid,
    .industry-list,
    .case-grid,
    .delivery-line,
    .form-row,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .system-board {
        padding: 18px;
    }

    .system-board article {
        min-height: auto;
        padding: 18px;
        border-radius: 14px;
        max-width: 100%;
        overflow: hidden;
    }

    .system-board h2 {
        font-size: 20px;
    }

    .system-footer {
        padding: 0 18px 18px;
    }

    .metric-strip {
        margin-top: -26px;
    }

    .metrics div {
        border-right: 0;
        border-bottom: 1px solid #edf2f7;
    }

    .section {
        padding: 64px 0;
    }

    .section-head h2,
    .brief-grid h2 {
        font-size: 30px;
    }

    .capability-grid article {
        min-height: auto;
    }
}