* {
    box-sizing: border-box;
}

:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #11AEEA;
    --accent: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.12);
    --shadow-soft: 0 12px 30px rgba(21, 90, 157, 0.08);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --header-height: 78px;
}

html {
    scroll-behavior: smooth;
    background: var(--bg);
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    color: var(--text);
    background:
        radial-gradient(circle at 10% 8%, rgba(53, 215, 255, 0.15), transparent 28rem),
        radial-gradient(circle at 90% 24%, rgba(22, 136, 216, 0.11), transparent 30rem),
        var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    text-rendering: optimizeLegibility;
}

body.drawer-open {
    overflow: hidden;
}

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

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

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

button {
    font: inherit;
}

.skip-link {
    position: fixed;
    top: -100px;
    left: 16px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    color: #fff;
    background: var(--accent);
}

.skip-link:focus {
    top: 12px;
}

.container {
    width: min(100% - 32px, 1200px);
    margin-inline: auto;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.93);
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 24px rgba(21, 90, 157, 0.06);
}

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

.brand-logo,
.drawer-logo,
.footer-logo {
    flex: 0 0 auto;
}

.brand-logo img {
    width: clamp(116px, 9vw, 150px);
    height: 48px;
    object-fit: contain;
}

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

.nav-link {
    position: relative;
    flex: 0 0 auto;
    padding: 10px 0;
    color: var(--text);
    font-size: clamp(13px, 0.93vw, 15px);
    font-weight: 600;
    white-space: nowrap;
    transition: color .2s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--gradient);
    transform: translateX(-50%);
    transition: width .2s ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--accent);
}

.nav-link:hover::after,
.nav-link.is-active::after {
    width: 100%;
}

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

.main-btn,
.secondary-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    border: 0;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}

.main-btn {
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 10px 22px rgba(22, 136, 216, 0.24);
}

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

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

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    border-radius: 999px;
    background: var(--deep);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    opacity: 0;
    background: rgba(7, 58, 104, 0.48);
    transition: opacity .25s ease;
}

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

.mobile-drawer {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 1200;
    width: min(88vw, 380px);
    padding: 22px;
    overflow-y: auto;
    background: var(--surface);
    box-shadow: -20px 0 50px rgba(7, 58, 104, 0.18);
    transform: translateX(105%);
    transition: transform .28s ease;
}

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

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

.drawer-logo img,
.footer-logo img {
    width: 132px;
    height: 48px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    color: var(--deep);
    background: var(--soft);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.mobile-nav {
    display: grid;
    gap: 8px;
    padding: 20px 0;
}

.mobile-link {
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--text);
    font-weight: 650;
}

.mobile-link:hover,
.mobile-link.is-active {
    color: var(--accent);
    background: var(--soft);
}

.drawer-register {
    width: 100%;
}

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

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

.section-compact {
    padding: clamp(38px, 5vw, 64px) 0;
}

.section-soft {
    background: linear-gradient(180deg, rgba(232, 247, 255, 0.72), rgba(244, 251, 255, 0.2));
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(62px, 9vw, 122px) 0 clamp(48px, 7vw, 82px);
    background:
        linear-gradient(135deg, rgba(53, 215, 255, 0.16), rgba(22, 136, 216, 0.08)),
        var(--soft);
}

.page-hero::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -100px;
    width: 360px;
    height: 360px;
    border: 70px solid rgba(255, 255, 255, 0.42);
    border-radius: 50%;
}

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

.page-hero h1,
.hero-copy h1 {
    max-width: 880px;
    margin: 8px 0 18px;
    color: var(--deep);
    font-size: clamp(34px, 5.5vw, 66px);
    line-height: 1.16;
    letter-spacing: -0.04em;
}

.page-hero p,
.hero-copy > p {
    max-width: 780px;
    margin: 0;
    color: var(--muted);
    font-size: clamp(16px, 1.5vw, 20px);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    width: 24px;
    height: 2px;
    border-radius: 999px;
    background: var(--primary);
}

.hero-carousel-wrap {
    padding: clamp(22px, 3vw, 36px) 0 0;
}

.hero-carousel {
    position: relative;
    overflow: hidden;
    width: min(100% - 32px, 1360px);
    margin-inline: auto;
    aspect-ratio: 16 / 6.2;
    min-height: 260px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: var(--soft);
    box-shadow: var(--shadow);
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .55s ease, visibility .55s ease;
}

.carousel-slide.is-active {
    opacity: 1;
    visibility: visible;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--soft);
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 2;
    width: clamp(40px, 4vw, 52px);
    height: clamp(40px, 4vw, 52px);
    border: 1px solid rgba(255, 255, 255, 0.68);
    border-radius: 50%;
    color: #fff;
    background: rgba(7, 58, 104, 0.48);
    backdrop-filter: blur(8px);
    transform: translateY(-50%);
    cursor: pointer;
}

.carousel-arrow.prev { left: clamp(12px, 2vw, 24px); }
.carousel-arrow.next { right: clamp(12px, 2vw, 24px); }

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: clamp(12px, 2vw, 20px);
    z-index: 2;
    display: flex;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 999px;
    background: rgba(7, 58, 104, 0.3);
    transform: translateX(-50%);
}

.carousel-dot {
    width: 9px;
    height: 9px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .6);
    cursor: pointer;
}

.carousel-dot.is-active {
    width: 24px;
    border-radius: 999px;
    background: #fff;
}

.intro-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
    gap: clamp(24px, 4vw, 54px);
    align-items: center;
    padding: clamp(28px, 4vw, 52px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--shadow-soft);
}

.intro-panel h1 {
    margin: 10px 0 18px;
    color: var(--deep);
    font-size: clamp(32px, 4.6vw, 58px);
    line-height: 1.18;
}

.intro-panel p {
    color: var(--muted);
}

.intro-actions,
.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.stat-card {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--soft);
}

.stat-card strong {
    display: block;
    color: var(--accent);
    font-size: clamp(20px, 2.5vw, 30px);
}

.stat-card span {
    color: var(--muted);
    font-size: 14px;
}

.section-heading {
    max-width: 780px;
    margin-bottom: clamp(26px, 4vw, 44px);
}

.section-heading h2,
.split-copy h2,
.compliance-card h2 {
    margin: 8px 0 12px;
    color: var(--deep);
    font-size: clamp(28px, 3.8vw, 46px);
    line-height: 1.25;
}

.section-heading p,
.split-copy p,
.compliance-card p {
    margin: 0;
    color: var(--muted);
}

.quick-grid,
.feature-grid,
.review-grid,
.link-grid,
.service-grid,
.timeline-grid {
    display: grid;
    gap: 18px;
}

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

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

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

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

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

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

.quick-card,
.feature-card,
.review-card,
.service-card,
.timeline-card,
.info-card,
.faq-card {
    position: relative;
    min-width: 0;
    padding: clamp(22px, 3vw, 30px);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}

.quick-card {
    display: flex;
    min-height: 236px;
    flex-direction: column;
}

.quick-card h3,
.feature-card h3,
.service-card h3,
.timeline-card h3,
.info-card h3 {
    margin: 0 0 10px;
    color: var(--deep);
    font-size: 20px;
    line-height: 1.35;
}

.quick-card p,
.feature-card p,
.service-card p,
.timeline-card p,
.info-card p,
.review-card p {
    margin: 0;
    color: var(--muted);
}

.quick-card .text-link {
    margin-top: auto;
    padding-top: 18px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 750;
}

.text-link::after {
    content: "→";
    transition: transform .2s ease;
}

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

.split-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr);
    gap: clamp(28px, 5vw, 72px);
    align-items: center;
}

.split-section.reverse .split-media {
    order: 2;
}

.split-media {
    overflow: hidden;
    padding: clamp(12px, 2vw, 20px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.split-media img,
.media-grid img {
    width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: calc(var(--radius-xl) - 10px);
    background: var(--soft);
}

.check-list {
    display: grid;
    gap: 12px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 28px;
    color: var(--text);
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary);
    font-weight: 900;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.media-card {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}

.media-card h3 {
    margin: 16px 8px 4px;
    color: var(--deep);
}

.media-card p {
    margin: 0 8px 10px;
    color: var(--muted);
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.tag {
    display: inline-flex;
    padding: 7px 12px;
    border-radius: 999px;
    color: var(--accent);
    background: var(--soft);
    font-size: 13px;
    font-weight: 750;
}

.review-card {
    min-height: 230px;
}

.review-mark {
    height: 40px;
    color: var(--primary);
    font-family: Georgia, serif;
    font-size: 54px;
    line-height: 1;
}

.review-card strong {
    display: block;
    margin-top: 18px;
    color: var(--deep);
}

.notice-strip {
    padding: 20px 22px;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--deep);
    background: var(--soft);
}

.compliance-card {
    display: grid;
    grid-template-columns: minmax(220px, .75fr) minmax(0, 1.5fr) auto;
    gap: clamp(20px, 4vw, 42px);
    align-items: center;
    padding: clamp(28px, 4vw, 46px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #FFFFFF, #E8F7FF);
    box-shadow: var(--shadow-soft);
}

.compliance-card h2 {
    font-size: clamp(25px, 3vw, 38px);
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: 0 8px 24px rgba(21, 90, 157, .06);
}

.faq-item summary {
    position: relative;
    padding: 20px 54px 20px 22px;
    color: var(--deep);
    font-weight: 750;
    cursor: pointer;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 22px;
    top: 50%;
    color: var(--primary);
    font-size: 26px;
    transform: translateY(-50%);
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-answer {
    padding: 0 22px 22px;
    color: var(--muted);
}

.cta-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: clamp(28px, 5vw, 52px);
    border-radius: var(--radius-xl);
    color: #fff;
    background: linear-gradient(135deg, #11AEEA, #155A9D);
    box-shadow: var(--shadow);
}

.cta-panel h2 {
    margin: 0 0 8px;
    font-size: clamp(26px, 3.5vw, 42px);
}

.cta-panel p {
    max-width: 700px;
    margin: 0;
    color: rgba(255,255,255,.84);
}

.cta-panel .secondary-btn {
    flex: 0 0 auto;
}

.contact-list {
    display: grid;
    gap: 14px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.contact-list li {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.site-footer {
    padding: 64px 0 24px;
    color: var(--footer-text);
    background: var(--footer);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: clamp(28px, 5vw, 64px);
}

.footer-brand p {
    max-width: 420px;
    color: rgba(234, 248, 255, .75);
}

.site-footer h2 {
    margin: 0 0 16px;
    color: #fff;
    font-size: 17px;
}

.footer-links {
    display: grid;
    gap: 10px;
}

.footer-links a {
    color: rgba(234, 248, 255, .76);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-top: 48px;
    padding-top: 22px;
    border-top: 1px solid rgba(234, 248, 255, .16);
    color: rgba(234, 248, 255, .66);
    font-size: 13px;
}

.footer-bottom p {
    margin: 0;
}

.back-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 800;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    opacity: 0;
    visibility: hidden;
    color: #fff;
    background: var(--gradient);
    box-shadow: var(--shadow-soft);
    transform: translateY(14px);
    transition: .2s ease;
    cursor: pointer;
}

.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 1179px) {
    .desktop-nav {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .header-inner {
        justify-content: space-between;
    }
    .quick-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .service-grid,
    .timeline-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    :root { --header-height: 72px; }
    .hero-carousel {
        aspect-ratio: 16 / 8.5;
        min-height: 240px;
        border-radius: 22px;
    }
    .intro-panel,
    .split-section,
    .compliance-card {
        grid-template-columns: 1fr;
    }
    .split-section.reverse .split-media {
        order: initial;
    }
    .quick-grid,
    .feature-grid,
    .review-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .compliance-card .text-link {
        justify-self: start;
    }
    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .container,
    .header-inner,
    .hero-carousel {
        width: min(100% - 24px, 1200px);
    }
    .brand-logo img {
        width: 112px;
    }
    .main-btn {
        min-height: 42px;
        padding: 9px 17px;
    }
    .hero-carousel {
        aspect-ratio: 4 / 3;
        min-height: 220px;
    }
    .carousel-arrow {
        width: 40px;
        height: 40px;
    }
    .quick-grid,
    .feature-grid,
    .review-grid,
    .service-grid,
    .timeline-grid,
    .link-grid,
    .media-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .quick-card {
        min-height: 0;
    }
    .cta-panel,
    .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
    }
    .stat-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
    }
}