:root {
    --ink: #102033;
    --muted: #5f7189;
    --line: rgba(37, 99, 235, 0.14);
    --panel: #ffffff;
    --soft: #f4f8ff;
    --soft-blue: #eaf4ff;
    --blue: #2368f2;
    --blue-2: #0f9cf5;
    --cyan: #17c7ff;
    --green: #15bf8a;
    --amber: #f6b73c;
    --shadow: 0 24px 70px rgba(35, 104, 242, 0.16);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.6;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    content: "";
    background:
        radial-gradient(circle at 10% 8%, rgba(23, 199, 255, 0.18), transparent 28%),
        radial-gradient(circle at 90% 18%, rgba(35, 104, 242, 0.12), transparent 30%),
        linear-gradient(180deg, #ffffff, #f7fbff 46%, #ffffff);
    pointer-events: none;
}

body::selection {
    color: #ffffff;
    background: rgba(35, 104, 242, 0.82);
}

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

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    padding: 0 clamp(20px, 5vw, 72px);
    color: var(--ink);
    background: rgba(255, 255, 255, 0.76);
    border-bottom: 1px solid rgba(35, 104, 242, 0.12);
    backdrop-filter: blur(18px);
    transition: background 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 12px 38px rgba(35, 104, 242, 0.12);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 17px;
    font-weight: 900;
    letter-spacing: 0;
}

.brand img {
    width: 38px;
    height: 38px;
    object-fit: contain;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    border-radius: 8px;
    box-shadow: 0 12px 26px rgba(35, 104, 242, 0.28);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    font-size: 14px;
    color: #405168;
}

.site-nav a {
    position: relative;
    padding: 26px 0;
    font-weight: 700;
}

.site-nav a::after {
    position: absolute;
    left: 0;
    bottom: 20px;
    width: 100%;
    height: 2px;
    content: "";
    background: linear-gradient(90deg, var(--blue), var(--cyan));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.2s ease;
}

.site-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    border: 1px solid rgba(35, 104, 242, 0.18);
    background: #ffffff;
    border-radius: 8px;
}

.nav-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--blue);
}

.hero {
    position: relative;
    min-height: 760px;
    color: var(--ink);
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.98), rgba(246, 251, 255, 0.92) 36%, rgba(238, 247, 255, 0.58) 72%),
        var(--hero-image) center / cover no-repeat,
        linear-gradient(135deg, #ffffff, #eaf5ff);
    overflow: hidden;
}

.hero::before {
    position: absolute;
    inset: 0;
    content: "";
    background-image:
        linear-gradient(rgba(35, 104, 242, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(35, 104, 242, 0.06) 1px, transparent 1px);
    background-size: 68px 68px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.58), transparent 86%);
    pointer-events: none;
    animation: gridDrift 18s linear infinite;
}

.hero-shade {
    position: absolute;
    inset: auto 0 0;
    height: 190px;
    background: linear-gradient(0deg, #ffffff 0, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 620px) minmax(280px, 420px);
    align-items: center;
    gap: clamp(34px, 6vw, 96px);
    width: min(1180px, calc(100% - 40px));
    min-height: 640px;
    margin: 0 auto;
    padding-top: 112px;
}

.eyebrow,
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--blue);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.eyebrow::before,
.section-label::before {
    width: 32px;
    height: 2px;
    content: "";
    background: currentColor;
}

.hero-copy h1 {
    max-width: 700px;
    margin: 20px 0 22px;
    color: #0c2038;
    font-size: 60px;
    line-height: 1.1;
    letter-spacing: 0;
    animation: riseIn 0.72s ease both;
}

.hero-copy p {
    max-width: 620px;
    margin: 0;
    color: var(--muted);
    font-size: 18px;
    animation: riseIn 0.72s 0.12s ease both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 36px;
    animation: riseIn 0.72s 0.22s ease both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 900;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--blue-2));
    box-shadow: 0 16px 42px rgba(35, 104, 242, 0.25);
}

.btn-ghost {
    color: var(--blue);
    border: 1px solid rgba(35, 104, 242, 0.22);
    background: rgba(255, 255, 255, 0.72);
}

.hero-panel {
    position: relative;
    padding: 24px;
    border: 1px solid rgba(35, 104, 242, 0.14);
    background: rgba(255, 255, 255, 0.78);
    border-radius: 8px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    animation: floatPanel 5.6s ease-in-out infinite, riseIn 0.72s 0.18s ease both;
}

.panel-head,
.panel-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-head {
    color: #6a7890;
    font-size: 13px;
    text-transform: uppercase;
}

.panel-head strong {
    color: var(--green);
    font-size: 12px;
}

.signal-map {
    position: relative;
    height: 220px;
    margin: 22px 0;
    border: 1px solid rgba(35, 104, 242, 0.12);
    background:
        linear-gradient(rgba(35, 104, 242, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(35, 104, 242, 0.07) 1px, transparent 1px),
        linear-gradient(135deg, rgba(35, 104, 242, 0.08), rgba(23, 199, 255, 0.08));
    background-size: 30px 30px, 30px 30px, auto;
    border-radius: 8px;
    overflow: hidden;
}

.signal-map::before,
.signal-map::after {
    position: absolute;
    inset: 50% auto auto 50%;
    width: 132px;
    height: 132px;
    content: "";
    border: 1px solid rgba(35, 104, 242, 0.38);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: radarPulse 3.4s ease-in-out infinite;
}

.signal-map::after {
    width: 68px;
    height: 68px;
    border-color: rgba(23, 199, 255, 0.72);
    box-shadow: 0 0 24px rgba(23, 199, 255, 0.22);
    animation-delay: 0.35s;
}

.signal-map i {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(21, 191, 138, 0.54);
    animation: dotPulse 2.6s ease-in-out infinite;
}

.signal-map i:nth-child(1) { top: 22%; left: 18%; }
.signal-map i:nth-child(2) { top: 18%; right: 20%; background: var(--blue); }
.signal-map i:nth-child(3) { top: 54%; left: 12%; background: var(--amber); animation-delay: 0.25s; }
.signal-map i:nth-child(4) { right: 14%; bottom: 24%; animation-delay: 0.5s; }
.signal-map i:nth-child(5) { left: 46%; bottom: 12%; background: var(--cyan); animation-delay: 0.75s; }
.signal-map i:nth-child(6) { top: 45%; right: 44%; background: #ffffff; border: 2px solid var(--blue); animation-delay: 1s; }

.panel-row {
    padding: 13px 0;
    color: #667891;
    border-top: 1px solid rgba(35, 104, 242, 0.1);
}

.panel-row strong {
    color: #0f3c86;
}

.stats-strip {
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    overflow: hidden;
    color: var(--ink);
    border: 1px solid rgba(35, 104, 242, 0.14);
    background: rgba(255, 255, 255, 0.86);
    border-radius: 8px;
    box-shadow: 0 18px 46px rgba(35, 104, 242, 0.12);
    backdrop-filter: blur(18px);
    animation: riseIn 0.72s 0.3s ease both;
}

.stats-strip div {
    padding: 22px 24px;
    border-right: 1px solid rgba(35, 104, 242, 0.1);
}

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

.stats-strip strong {
    display: block;
    color: var(--blue);
    font-size: 34px;
    line-height: 1;
}

.stats-strip span {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 14px;
}

.section {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 92px 0;
}

.intro {
    padding-top: 120px;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 54px;
    align-items: end;
    margin-top: 18px;
}

.split h2,
.section-head h2,
.contact-band h2 {
    margin: 0;
    font-size: 44px;
    line-height: 1.16;
    letter-spacing: 0;
}

.split p,
.section-head p,
.contact-band p {
    margin: 0;
    color: var(--muted);
    font-size: 17px;
}

.section-soft {
    width: 100%;
    padding: 92px max(20px, calc((100% - 1180px) / 2));
    background: linear-gradient(180deg, #f7fbff, #eef6ff);
}

.section-head {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr);
    gap: 32px;
    align-items: end;
    margin-bottom: 34px;
}

.section-head .section-label {
    grid-column: 1 / -1;
}

.section-head.compact {
    display: block;
    max-width: 760px;
}

.section-head.compact h2 {
    margin-top: 16px;
}

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

.solution-card {
    min-height: 260px;
    padding: 26px;
    background: #ffffff;
    border: 1px solid rgba(35, 104, 242, 0.12);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(35, 104, 242, 0.08);
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    animation: riseIn 0.7s ease both;
}

.solution-card:nth-child(2) { animation-delay: 0.06s; }
.solution-card:nth-child(3) { animation-delay: 0.12s; }
.solution-card:nth-child(4) { animation-delay: 0.18s; }
.solution-card:nth-child(5) { animation-delay: 0.24s; }
.solution-card:nth-child(6) { animation-delay: 0.3s; }

.solution-card:hover {
    transform: translateY(-6px);
    border-color: rgba(35, 104, 242, 0.36);
    box-shadow: var(--shadow);
}

.solution-card span {
    color: var(--blue);
    font-size: 13px;
    font-weight: 900;
}

.solution-card h3,
.feature-item h3,
.process-step h3 {
    margin: 18px 0 10px;
    font-size: 20px;
    line-height: 1.3;
    letter-spacing: 0;
}

.solution-card p,
.feature-item p,
.process-step p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-top: 36px;
}

.feature-item {
    padding: 30px;
    border: 1px solid rgba(35, 104, 242, 0.12);
    border-radius: 8px;
    background: linear-gradient(180deg, #ffffff, #f7fbff);
    box-shadow: 0 16px 40px rgba(35, 104, 242, 0.08);
    animation: riseIn 0.7s ease both;
}

.feature-item:nth-child(2) { animation-delay: 0.06s; }
.feature-item:nth-child(3) { animation-delay: 0.12s; }
.feature-item:nth-child(4) { animation-delay: 0.18s; }
.feature-item:nth-child(5) { animation-delay: 0.24s; }
.feature-item:nth-child(6) { animation-delay: 0.3s; }

@keyframes riseIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes radarPulse {
    0%, 100% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(0.96);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

@keyframes dotPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.82;
    }
    50% {
        transform: scale(1.42);
        opacity: 1;
    }
}

@keyframes gridDrift {
    from {
        background-position: 0 0, 0 0;
    }
    to {
        background-position: 68px 68px, 68px 68px;
    }
}

.feature-icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    border-radius: 8px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.process-section {
    padding-top: 60px;
}

.process-line {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 40px;
    border: 1px solid rgba(35, 104, 242, 0.12);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 18px 44px rgba(35, 104, 242, 0.08);
}

.process-step {
    position: relative;
    min-height: 230px;
    padding: 32px;
    background: #ffffff;
    border-right: 1px solid rgba(35, 104, 242, 0.1);
}

.process-step:last-child {
    border-right: 0;
}

.process-step > span {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    color: #ffffff;
    font-weight: 900;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    border-radius: 50%;
}

.contact-band {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
    gap: 34px;
    align-items: center;
    width: min(1180px, calc(100% - 40px));
    margin: 20px auto 92px;
    padding: clamp(32px, 6vw, 60px);
    color: #ffffff;
    background: linear-gradient(135deg, #2368f2, #17a8ff 58%, #15bf8a);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 22px 60px rgba(35, 104, 242, 0.2);
}

.contact-band .section-label {
    color: #ffffff;
}

.contact-band h2 {
    margin-top: 16px;
}

.contact-band p {
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.84);
}

.contact-actions {
    display: grid;
    gap: 18px;
    justify-items: start;
}

.contact-actions .btn-primary {
    color: var(--blue);
    background: #ffffff;
    box-shadow: 0 14px 34px rgba(16, 32, 51, 0.16);
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 28px clamp(20px, 5vw, 72px);
    color: #728093;
    background: #f8fbff;
    border-top: 1px solid rgba(35, 104, 242, 0.1);
    font-size: 14px;
}

@media (max-width: 980px) {
    .site-header {
        min-height: 68px;
    }

    .nav-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        top: 68px;
        left: 20px;
        right: 20px;
        display: none;
        padding: 14px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid rgba(35, 104, 242, 0.14);
        border-radius: 8px;
        box-shadow: 0 18px 44px rgba(35, 104, 242, 0.14);
    }

    .site-nav.is-open {
        display: grid;
        gap: 4px;
    }

    .site-nav a {
        padding: 12px;
    }

    .site-nav a::after {
        display: none;
    }

    .hero {
        min-height: auto;
        background-position: 58% center;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        min-height: auto;
        padding: 116px 0 34px;
    }

    .hero-copy h1 {
        font-size: 48px;
    }

    .hero-panel {
        max-width: 520px;
    }

    .stats-strip,
    .solution-grid,
    .feature-grid,
    .process-line,
    .split,
    .section-head,
    .contact-band {
        grid-template-columns: 1fr;
    }

    .stats-strip strong {
        font-size: 30px;
    }

    .split h2,
    .section-head h2,
    .contact-band h2 {
        font-size: 36px;
    }

    .stats-strip div,
    .process-step {
        border-right: 0;
        border-bottom: 1px solid rgba(35, 104, 242, 0.1);
    }

    .stats-strip div:last-child,
    .process-step:last-child {
        border-bottom: 0;
    }
}

@media (max-width: 640px) {
    .hero {
        background:
            linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(241, 248, 255, 0.9)),
            var(--hero-image) center top / cover no-repeat,
            #eef7ff;
    }

    .hero-copy h1 {
        font-size: 36px;
    }

    .hero-copy p {
        font-size: 16px;
    }

    .stats-strip strong {
        font-size: 28px;
    }

    .split h2,
    .section-head h2,
    .contact-band h2 {
        font-size: 30px;
    }

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

    .btn {
        min-height: 46px;
    }

    .hero-panel {
        padding: 18px;
    }

    .signal-map {
        height: 176px;
    }

    .section {
        padding: 70px 0;
    }

    .intro {
        padding-top: 86px;
    }

    .section-soft {
        padding-top: 70px;
        padding-bottom: 70px;
    }

    .solution-card,
    .feature-item,
    .process-step {
        min-height: auto;
        padding: 24px;
    }

    .site-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}