* {
    box-sizing: border-box;
}

:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 45px rgba(21, 90, 157, 0.12);
    --shadow-small: 0 10px 28px rgba(21, 90, 157, 0.09);
    --radius: 22px;
    --radius-small: 15px;
    --header-height: 78px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
}

body.drawer-open {
    overflow: hidden;
}

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

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 28px rgba(21, 90, 157, 0.07);
    backdrop-filter: blur(14px);
}

.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 28px);
}

.brand-logo,
.drawer-brand {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
}

.brand-logo img {
    width: clamp(108px, 10vw, 152px);
    max-height: 48px;
    object-fit: contain;
}

.desktop-nav {
    min-width: 0;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(8px, 1.15vw, 18px);
    overflow: hidden;
}

.desktop-nav a {
    position: relative;
    flex: 0 1 auto;
    white-space: nowrap;
    color: var(--text);
    font-size: clamp(13px, 0.92vw, 15px);
    font-weight: 700;
    transition: color 0.2s ease;
}

.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: -9px;
    height: 2px;
    border-radius: 99px;
    background: var(--gradient);
    transition: left 0.2s ease, right 0.2s ease;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
    color: var(--primary-strong);
}

.desktop-nav a:hover::after,
.desktop-nav a.is-active::after {
    left: 0;
    right: 0;
}

.header-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

.main-btn,
.secondary-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 800;
    white-space: nowrap;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.main-btn {
    color: #FFFFFF;
    background: var(--gradient);
    box-shadow: 0 10px 24px rgba(22, 136, 216, 0.22);
}

.secondary-btn {
    color: var(--primary-strong);
    background: var(--surface);
    border: 1px solid var(--border);
}

.main-btn:hover,
.secondary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(22, 136, 216, 0.18);
}

.menu-toggle {
    width: 46px;
    height: 46px;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    cursor: pointer;
}

.menu-toggle span {
    width: 21px;
    height: 2px;
    border-radius: 99px;
    background: var(--deep);
}

.site-main {
    padding-top: var(--header-height);
}

.container {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
}

.section {
    padding: clamp(58px, 7vw, 96px) 0;
}

.section-compact {
    padding: clamp(34px, 5vw, 62px) 0;
}

.section-soft {
    background: var(--soft);
}

.section-head {
    max-width: 780px;
    margin-bottom: 34px;
}

.section-head.centered {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    margin-bottom: 10px;
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
}

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

h1,
h2,
h3 {
    color: var(--deep);
    line-height: 1.3;
}

h1 {
    margin-bottom: 20px;
    font-size: clamp(34px, 5vw, 62px);
    letter-spacing: -0.035em;
}

h2 {
    margin-bottom: 16px;
    font-size: clamp(27px, 3.4vw, 42px);
    letter-spacing: -0.025em;
}

h3 {
    margin-bottom: 10px;
    font-size: clamp(19px, 2vw, 24px);
}

p {
    color: var(--muted);
}

.lead {
    max-width: 780px;
    font-size: clamp(17px, 2vw, 20px);
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(72px, 9vw, 126px) 0 clamp(58px, 7vw, 92px);
    background:
        radial-gradient(circle at 85% 15%, rgba(53, 215, 255, 0.28), transparent 30%),
        radial-gradient(circle at 12% 10%, rgba(22, 136, 216, 0.15), transparent 28%),
        linear-gradient(180deg, #FFFFFF 0%, #E8F7FF 100%);
}

.page-hero::after {
    content: "";
    position: absolute;
    right: -90px;
    bottom: -110px;
    width: 340px;
    height: 340px;
    border: 1px solid rgba(17, 174, 234, 0.22);
    border-radius: 50%;
    box-shadow: 0 0 0 42px rgba(17, 174, 234, 0.06), 0 0 0 84px rgba(17, 174, 234, 0.035);
}

.page-hero .container {
    position: relative;
    z-index: 1;
}

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

.carousel-section {
    padding: 28px 0 0;
}

.carousel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: clamp(18px, 3vw, 30px);
    background: var(--soft);
    box-shadow: var(--shadow);
    aspect-ratio: 16 / 5.4;
}

.carousel-track,
.carousel-slide {
    position: absolute;
    inset: 0;
}

.carousel-slide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.55s ease;
}

.carousel-slide.is-active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.carousel-arrow {
    position: absolute;
    z-index: 3;
    top: 50%;
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 50%;
    color: #FFFFFF;
    background: rgba(7, 58, 104, 0.48);
    backdrop-filter: blur(8px);
    cursor: pointer;
    transform: translateY(-50%);
}

.carousel-arrow:hover {
    background: rgba(7, 58, 104, 0.72);
}

.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }

.carousel-dots {
    position: absolute;
    z-index: 3;
    left: 50%;
    bottom: 16px;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.62);
    box-shadow: 0 0 0 1px rgba(7, 58, 104, 0.2);
    cursor: pointer;
}

.carousel-dot.is-active {
    width: 28px;
    border-radius: 999px;
    background: #FFFFFF;
}

.split-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: clamp(32px, 6vw, 72px);
    align-items: center;
}

.split-layout.reverse .media-card {
    order: -1;
}

.media-card {
    min-width: 0;
    padding: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.media-card img {
    width: 100%;
    max-height: 460px;
    object-fit: contain;
    border-radius: calc(var(--radius) - 8px);
    background: var(--soft);
}

.card-grid,
.quick-grid,
.testimonial-grid,
.feature-grid,
.stat-grid,
.faq-grid {
    display: grid;
    gap: 20px;
}

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

.quick-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.content-card,
.quick-card,
.feature-card,
.testimonial-card,
.stat-card,
.faq-card,
.image-product-card {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    background: var(--surface);
    box-shadow: var(--shadow-small);
}

.content-card,
.quick-card,
.feature-card,
.testimonial-card,
.stat-card,
.faq-card {
    padding: clamp(22px, 3vw, 30px);
}

.content-card,
.quick-card,
.feature-card,
.testimonial-card,
.image-product-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.content-card:hover,
.quick-card:hover,
.feature-card:hover,
.testimonial-card:hover,
.image-product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.quick-card {
    display: flex;
    flex-direction: column;
}

.quick-card p {
    flex: 1;
    font-size: 14px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-strong);
    font-weight: 800;
}

.text-link::after {
    content: "→";
    transition: transform 0.2s ease;
}

.text-link:hover::after {
    transform: translateX(4px);
}

.tag-list,
.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 22px 0;
}

.tag,
.pill {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 5px 13px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--deep);
    background: var(--soft);
    font-size: 14px;
    font-weight: 700;
}

.image-product-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.image-product-card {
    overflow: hidden;
}

.image-product-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: contain;
    background: var(--soft);
}

.image-product-card .card-body {
    padding: 24px;
}

.list-clean {
    margin: 0;
    padding: 0;
    list-style: none;
}

.list-clean li {
    position: relative;
    padding: 9px 0 9px 24px;
    color: var(--muted);
}

.list-clean li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 19px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gradient);
}

.testimonial-role {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 800;
}

.testimonial-card p {
    margin-bottom: 0;
    color: var(--text);
}

.stat-card strong {
    display: block;
    color: var(--primary-strong);
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.2;
}

.stat-card span {
    color: var(--muted);
}

.notice-card {
    display: grid;
    grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.3fr) auto;
    gap: 26px;
    align-items: center;
    padding: clamp(26px, 4vw, 42px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(135deg, #FFFFFF 0%, #E8F7FF 100%);
    box-shadow: var(--shadow-small);
}

.notice-card h2,
.notice-card p {
    margin-bottom: 0;
}

.faq-card h3 {
    font-size: 19px;
}

.faq-card p {
    margin-bottom: 0;
}

.callout {
    padding: clamp(32px, 5vw, 58px);
    border-radius: var(--radius);
    color: #FFFFFF;
    background: linear-gradient(135deg, #0D7DC4 0%, #19BCEB 100%);
    box-shadow: var(--shadow);
}

.callout h2,
.callout p {
    color: #FFFFFF;
}

.callout p {
    max-width: 760px;
    opacity: 0.92;
}

.site-footer {
    color: var(--footer-text);
    background: var(--footer);
}

.footer-inner {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
    padding: 64px 0 38px;
    display: grid;
    grid-template-columns: 1.1fr 1.9fr;
    gap: 70px;
}

.footer-brand img {
    width: 148px;
    max-height: 50px;
    margin-bottom: 18px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-brand p,
.footer-bottom p {
    color: rgba(234, 248, 255, 0.78);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.footer-links h3 {
    color: #FFFFFF;
    font-size: 16px;
}

.footer-links a {
    display: block;
    margin: 8px 0;
    color: rgba(234, 248, 255, 0.8);
    font-size: 14px;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
    padding: 22px 0 32px;
    display: flex;
    justify-content: space-between;
    gap: 28px;
    border-top: 1px solid rgba(234, 248, 255, 0.16);
    font-size: 13px;
}

.footer-bottom p {
    margin-bottom: 0;
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, 0.42);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.drawer-overlay.is-visible {
    opacity: 1;
}

.mobile-drawer {
    position: fixed;
    z-index: 1100;
    inset: 0 0 0 auto;
    width: min(88vw, 390px);
    padding: 22px;
    overflow-y: auto;
    background: #FFFFFF;
    box-shadow: -20px 0 60px rgba(7, 58, 104, 0.18);
    transform: translateX(105%);
    transition: transform 0.28s ease;
}

.mobile-drawer.is-open {
    transform: translateX(0);
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.drawer-brand img {
    width: 132px;
    max-height: 46px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 13px;
    color: var(--deep);
    background: var(--soft);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 22px 0;
}

.drawer-nav a {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    background: var(--bg);
    font-weight: 700;
}

.drawer-nav a.is-active {
    color: #FFFFFF;
    border-color: transparent;
    background: var(--gradient);
}

.drawer-register {
    width: 100%;
}

@media (max-width: 1179px) {
    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .header-inner {
        justify-content: space-between;
    }
}

@media (max-width: 980px) {
    .quick-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .card-grid,
    .testimonial-grid,
    .image-product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .split-layout {
        grid-template-columns: 1fr;
    }

    .split-layout.reverse .media-card {
        order: initial;
    }

    .notice-card {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 34px;
    }
}

@media (max-width: 720px) {
    :root {
        --header-height: 68px;
    }

    .header-inner,
    .container,
    .footer-inner,
    .footer-bottom {
        width: min(100% - 24px, 1180px);
    }

    .brand-logo img {
        width: 112px;
    }

    .header-actions .main-btn {
        min-height: 40px;
        padding: 0 17px;
        font-size: 14px;
    }

    .menu-toggle {
        width: 42px;
        height: 42px;
    }

    .carousel {
        aspect-ratio: 16 / 9;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
    }

    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }

    .card-grid,
    .testimonial-grid,
    .image-product-grid,
    .faq-grid,
    .quick-grid,
    .feature-grid,
    .stat-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 420px) {
    .header-inner {
        gap: 8px;
    }

    .brand-logo img {
        width: 98px;
    }

    .header-actions {
        gap: 6px;
    }

    .header-actions .main-btn {
        padding: 0 14px;
    }

    .drawer-nav,
    .footer-links {
        grid-template-columns: 1fr;
    }
}