:root {
    --blue-950: #071743;
    --blue-900: #0a2463;
    --blue-700: #1264ff;
    --blue-500: #1d8bff;
    --cyan-400: #18d5e8;
    --green-500: #20c878;
    --orange-500: #ff8a1f;
    --yellow-400: #ffd34d;
    --ink: #11203b;
    --muted: #64748b;
    --line: #dce7f5;
    --surface: #ffffff;
    --soft: #f4f8ff;
    --shadow: 0 24px 80px rgba(10, 36, 99, 0.16);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background: #fff;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: 76px;
    padding: 0 clamp(20px, 5vw, 72px);
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid rgba(220, 231, 245, 0.7);
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: max-content;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    color: #fff;
    font-weight: 900;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--blue-700), var(--cyan-400) 55%, var(--green-500));
    box-shadow: 0 12px 28px rgba(18, 100, 255, 0.28);
}

.brand strong,
.brand small {
    display: block;
}

.brand strong {
    font-size: 18px;
    letter-spacing: 0;
}

.brand small {
    margin-top: 2px;
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(16px, 2.2vw, 30px);
    flex: 1;
    color: #334155;
    font-size: 15px;
}

.site-nav a {
    transition: color 0.2s ease;
}

.site-nav a:hover {
    color: var(--blue-700);
}

.header-cta,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 22px;
    border: 0;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}

.header-cta,
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--orange-500), #ffb629);
    box-shadow: 0 16px 34px rgba(255, 138, 31, 0.26);
}

.btn-secondary {
    color: var(--blue-900);
    background: #fff;
    border: 1px solid rgba(18, 100, 255, 0.2);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    background: var(--blue-900);
}

.section-band {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 22% 24%, rgba(24, 213, 232, 0.2), transparent 26%),
        radial-gradient(circle at 78% 20%, rgba(255, 211, 77, 0.18), transparent 25%),
        linear-gradient(135deg, #f7fbff 0%, #eef6ff 52%, #f8fffb 100%);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
    align-items: center;
    gap: clamp(28px, 5vw, 72px);
    min-height: calc(100vh - 76px);
    padding: clamp(58px, 7vw, 96px) clamp(20px, 5vw, 72px) 70px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(18, 100, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 100, 255, 0.08) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, #000 20%, transparent 88%);
}

.hero-content,
.hero-visual {
    position: relative;
    z-index: 1;
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--blue-700);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 720px;
    margin-bottom: 22px;
    color: var(--blue-950);
    font-size: clamp(42px, 5.4vw, 76px);
    line-height: 1.03;
    letter-spacing: 0;
}

.hero-lead {
    max-width: 650px;
    margin-bottom: 32px;
    color: #334155;
    font-size: clamp(17px, 1.6vw, 21px);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 40px;
}

.hero-actions .btn {
    min-height: 52px;
    padding-inline: 28px;
}

.hero-proof {
    display: grid;
    grid-template-columns: repeat(4, minmax(90px, 1fr));
    gap: 12px;
    max-width: 680px;
}

.hero-proof div {
    padding: 16px 14px;
    border: 1px solid rgba(18, 100, 255, 0.12);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.72);
}

.hero-proof strong {
    display: block;
    color: var(--blue-700);
    font-size: 26px;
    line-height: 1;
}

.hero-proof span {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 13px;
}

.hero-visual {
    min-height: 620px;
}

.dashboard-shell {
    position: absolute;
    inset: 42px 0 0 0;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.dashboard-top {
    display: flex;
    gap: 8px;
    padding: 8px 10px 16px;
}

.dashboard-top span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--line);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    grid-template-rows: 1fr 1fr;
    gap: 14px;
    height: calc(100% - 34px);
}

.panel {
    min-height: 0;
    padding: 18px;
    border: 1px solid rgba(220, 231, 245, 0.75);
    border-radius: 12px;
    background: #fff;
}

.panel-title {
    margin-bottom: 16px;
    color: var(--blue-950);
    font-weight: 800;
}

.panel-orders {
    background: linear-gradient(145deg, #fff, #ecf7ff);
}

.chart-bars {
    display: flex;
    align-items: end;
    gap: 12px;
    height: 170px;
}

.chart-bars i {
    flex: 1;
    border-radius: 8px 8px 3px 3px;
    background: linear-gradient(180deg, var(--cyan-400), var(--blue-700));
}

.panel-store {
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, var(--blue-700), var(--cyan-400));
}

.phone-preview {
    width: 138px;
    min-height: 236px;
    padding: 18px 14px;
    border: 8px solid rgba(255, 255, 255, 0.75);
    border-radius: 26px;
    color: #fff;
    background: rgba(255, 255, 255, 0.18);
}

.phone-preview span,
.phone-preview b,
.phone-preview em {
    display: block;
}

.phone-preview span {
    font-size: 13px;
}

.phone-preview b {
    margin: 12px 0;
    font-size: 18px;
}

.phone-preview em {
    height: 28px;
    margin-top: 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.52);
}

.panel-inventory ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.panel-inventory li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 13px;
    padding: 13px 12px;
    border-radius: 8px;
    background: var(--soft);
}

.panel-inventory strong {
    color: var(--green-500);
}

.panel-member {
    display: grid;
    align-content: center;
    justify-items: center;
    background: linear-gradient(145deg, #fff8eb, #fff);
}

.ring {
    display: grid;
    place-items: center;
    width: 154px;
    height: 154px;
    color: var(--orange-500);
    font-size: 34px;
    font-weight: 900;
    border-radius: 50%;
    background:
        radial-gradient(circle at center, #fff 0 56%, transparent 57%),
        conic-gradient(var(--orange-500) 0 76%, #ffe3ba 76% 100%);
}

.flow-card {
    position: absolute;
    z-index: 2;
    padding: 13px 18px;
    color: #fff;
    border-radius: 8px;
    font-weight: 800;
    box-shadow: 0 18px 40px rgba(10, 36, 99, 0.18);
}

.flow-a {
    top: 10px;
    right: 12%;
    background: var(--orange-500);
}

.flow-b {
    top: 42%;
    left: -18px;
    background: var(--blue-700);
}

.flow-c {
    right: -8px;
    bottom: 76px;
    background: var(--green-500);
}

.products,
.process,
.contact,
.more-content {
    padding: 92px clamp(20px, 5vw, 72px);
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 42px;
    text-align: center;
}

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

.section-heading h2,
.about-copy h2,
.contact h2 {
    margin-bottom: 14px;
    color: var(--blue-950);
    font-size: clamp(30px, 3vw, 46px);
    line-height: 1.18;
}

.section-heading p,
.about-copy p,
.contact p {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.8;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.product-card {
    min-height: 292px;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 18px 50px rgba(10, 36, 99, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 68px rgba(10, 36, 99, 0.14);
}

.product-icon {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    margin-bottom: 22px;
    color: #fff;
    border-radius: 8px;
    font-weight: 900;
}

.product-blue .product-icon {
    background: var(--blue-700);
}

.product-green .product-icon {
    background: var(--green-500);
}

.product-orange .product-icon {
    background: var(--orange-500);
}

.product-cyan .product-icon {
    background: var(--cyan-400);
}

.product-card h3 {
    margin-bottom: 12px;
    font-size: 23px;
}

.product-card p {
    color: var(--muted);
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.tags span {
    padding: 6px 10px;
    border-radius: 7px;
    color: var(--blue-900);
    font-size: 13px;
    background: var(--soft);
}

.solutions {
    padding: 92px clamp(20px, 5vw, 72px);
}

.scenario-wrap {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}

.scenario {
    min-height: 132px;
    padding: 20px;
    border: 1px solid rgba(18, 100, 255, 0.12);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.76);
}

.scenario.active {
    color: #fff;
    background: linear-gradient(135deg, var(--blue-700), var(--cyan-400));
    box-shadow: 0 20px 50px rgba(18, 100, 255, 0.25);
}

.scenario span,
.scenario strong {
    display: block;
}

.scenario span {
    margin-bottom: 34px;
    opacity: 0.74;
}

.scenario strong {
    font-size: 20px;
}

.process-line {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}

.process-line div {
    min-height: 220px;
    padding: 28px;
    background: #fff;
}

.process-line div + div {
    border-left: 1px solid var(--line);
}

.process-line span {
    color: var(--orange-500);
    font-weight: 900;
}

.process-line h3 {
    margin: 22px 0 12px;
    font-size: 22px;
}

.process-line p {
    color: var(--muted);
    line-height: 1.7;
}

.about {
    display: grid;
    grid-template-columns: 1fr 0.72fr;
    gap: clamp(24px, 4vw, 64px);
    align-items: center;
    padding: 92px clamp(20px, 5vw, 72px);
}

.about-card {
    padding: 34px;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
    box-shadow: var(--shadow);
}

.about-card strong {
    display: block;
    margin-bottom: 18px;
    font-size: 24px;
}

.about-card ul {
    margin: 0;
    padding-left: 20px;
    line-height: 2;
}

.contact-panel {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(24px, 4vw, 60px);
    align-items: start;
    padding: clamp(28px, 5vw, 54px);
    border-radius: 12px;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(7, 23, 67, 0.96), rgba(18, 100, 255, 0.92)),
        linear-gradient(45deg, transparent, rgba(24, 213, 232, 0.3));
}

.contact-panel .eyebrow,
.contact-panel p,
.contact-panel h2 {
    color: #fff;
}

.contact-form {
    display: grid;
    gap: 14px;
}

.contact-form label {
    display: grid;
    gap: 8px;
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 8px;
    padding: 14px 15px;
    color: #fff;
    font: inherit;
    background: rgba(255, 255, 255, 0.12);
    outline: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.66);
}

.contact-form .btn {
    width: max-content;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    place-items: center;
    padding: 20px;
    background: rgba(7, 23, 67, 0.56);
    backdrop-filter: blur(10px);
}

.modal-backdrop.is-open {
    display: grid;
}

.modal-card {
    width: min(440px, 100%);
    padding: 34px;
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 12px;
    text-align: center;
    background: #fff;
    box-shadow: 0 28px 90px rgba(7, 23, 67, 0.32);
}

.modal-icon {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    margin: 0 auto 18px;
    color: #fff;
    border-radius: 50%;
    font-size: 30px;
    font-weight: 900;
}

.modal-success .modal-icon {
    background: linear-gradient(135deg, var(--green-500), var(--cyan-400));
}

.modal-error .modal-icon {
    background: linear-gradient(135deg, var(--orange-500), #ffb629);
}

.modal-card h2 {
    margin-bottom: 10px;
    color: var(--blue-950);
    font-size: 28px;
}

.modal-card p {
    margin-bottom: 24px;
    color: var(--muted);
    line-height: 1.8;
}

.more-content {
    background: linear-gradient(180deg, #fff 0%, #f5f9ff 100%);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 58px;
}

.advantage-grid article {
    min-height: 210px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background:
        linear-gradient(145deg, rgba(29, 139, 255, 0.1), transparent 48%),
        #fff;
    box-shadow: 0 18px 50px rgba(10, 36, 99, 0.07);
}

.advantage-grid h3 {
    margin-bottom: 14px;
    color: var(--blue-950);
    font-size: 24px;
}

.advantage-grid p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.faq-panel {
    display: grid;
    grid-template-columns: 0.42fr 0.58fr;
    gap: clamp(24px, 4vw, 60px);
    align-items: start;
    padding: clamp(26px, 4vw, 46px);
    border: 1px solid rgba(18, 100, 255, 0.12);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 22px 70px rgba(10, 36, 99, 0.09);
}

.faq-panel h2 {
    margin-bottom: 0;
    color: var(--blue-950);
    font-size: clamp(30px, 3vw, 44px);
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-list details {
    padding: 18px 20px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--soft);
}

.faq-list summary {
    color: var(--blue-950);
    font-weight: 900;
    cursor: pointer;
}

.faq-list p {
    margin: 14px 0 0;
    color: var(--muted);
    line-height: 1.8;
}

.site-footer {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, minmax(150px, 0.6fr));
    gap: 34px;
    padding: 44px clamp(20px, 5vw, 72px) 24px;
    color: #fff;
    background: var(--blue-950);
}

.site-footer strong,
.site-footer a,
.site-footer span {
    display: block;
}

.site-footer strong {
    margin-bottom: 14px;
    font-size: 18px;
}

.site-footer a,
.site-footer span,
.site-footer p {
    margin: 0 0 10px;
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.7;
}

.site-footer a:hover {
    color: #fff;
}

.footer-brand {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.footer-brand .brand-mark {
    flex: 0 0 auto;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    grid-column: 1 / -1;
    gap: 16px;
    padding-top: 24px;
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 1120px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 560px;
    }

    .product-grid,
    .advantage-grid,
    .process-line {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .scenario-wrap {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .process-line div + div {
        border-left: 0;
    }

    .process-line div {
        border-top: 1px solid var(--line);
    }
}

@media (max-width: 840px) {
    .site-header {
        justify-content: space-between;
    }

    .nav-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        top: 76px;
        right: 20px;
        left: 20px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 18px;
        border: 1px solid var(--line);
        border-radius: 8px;
        background: #fff;
        box-shadow: var(--shadow);
    }

    .site-nav.open {
        display: flex;
    }

    .site-nav a {
        padding: 10px;
    }

    .header-cta {
        display: none;
    }

    .product-grid,
    .advantage-grid,
    .scenario-wrap,
    .process-line,
    .about,
    .contact-panel,
    .faq-panel,
    .site-footer {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
    }

    .hero-proof {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-visual {
        min-height: 500px;
    }

    .dashboard-shell {
        inset: 28px 0 0;
    }

    .flow-card {
        display: none;
    }

    .site-footer {
        gap: 22px;
    }

    .footer-bottom {
        flex-direction: column;
    }
}

@media (max-width: 560px) {
    .hero,
    .products,
    .solutions,
    .process,
    .about,
    .contact,
    .more-content {
        padding-inline: 16px;
    }

    h1 {
        font-size: 40px;
    }

    .hero-visual {
        min-height: 430px;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .panel-store,
    .panel-member {
        display: none;
    }
}