:root {
    --bg: #f3f7f8;
    --bg-deep: #0b3d4a;
    --bg-mid: #126277;
    --surface: #ffffff;
    --text: #16323a;
    --muted: #5f7a82;
    --line: rgba(18, 98, 119, 0.12);
    --accent: #0f8a7d;
    --accent-2: #1aa3c4;
    --shadow: 0 18px 50px rgba(11, 61, 74, 0.12);
    --radius: 18px;
    --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; }
.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.container.narrow { width: min(860px, calc(100% - 32px)); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(243, 247, 248, 0.86);
    border-bottom: 1px solid transparent;
    transition: box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.92);
    border-bottom-color: var(--line);
    box-shadow: 0 8px 24px rgba(11, 61, 74, 0.06);
}
.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    letter-spacing: 0.02em;
}
.brand-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 8px;
}
.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--bg-mid), var(--accent));
    font-size: 16px;
}
.brand-name { font-size: 18px; }
.site-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.site-nav a {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    transition: color .2s ease, background .2s ease;
}
.site-nav a:hover,
.site-nav a.active {
    color: var(--bg-deep);
    background: rgba(18, 98, 119, 0.08);
}
.site-nav .nav-cta {
    margin-left: 6px;
    background: linear-gradient(135deg, var(--bg-mid), var(--accent));
    color: #fff !important;
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 0;
    background: transparent;
    padding: 10px;
    cursor: pointer;
}
.nav-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--bg-deep);
    border-radius: 2px;
}

.hero {
    position: relative;
    overflow: hidden;
    color: #fff;
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 20%, rgba(26, 163, 196, 0.45), transparent 36%),
        radial-gradient(circle at 82% 18%, rgba(15, 138, 125, 0.38), transparent 34%),
        linear-gradient(145deg, #062832 0%, #0b3d4a 42%, #126277 100%);
}
.hero-bg::after {
    content: "";
    position: absolute;
    inset: auto -10% -30% 35%;
    height: 70%;
    background:
        linear-gradient(120deg, rgba(255,255,255,0.08), transparent 40%),
        repeating-linear-gradient(
            -18deg,
            rgba(255,255,255,0.05) 0 2px,
            transparent 2px 18px
        );
    transform: skewY(-8deg);
    opacity: 0.7;
}
.hero-inner {
    position: relative;
    z-index: 1;
    padding: 72px 0 88px;
    animation: rise .8s ease both;
}
.hero-kicker {
    margin: 0 0 16px;
    color: rgba(255,255,255,0.78);
    letter-spacing: 0.08em;
    font-size: 14px;
}
.hero-title {
    margin: 0;
    max-width: 16ch;
    font-size: clamp(34px, 6vw, 58px);
    line-height: 1.15;
    font-weight: 760;
    letter-spacing: -0.02em;
}
.hero-desc {
    margin: 20px 0 0;
    max-width: 40rem;
    color: rgba(255,255,255,0.82);
    font-size: 17px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(135deg, #19b7a5, #1aa3c4);
    color: #fff;
    box-shadow: 0 12px 30px rgba(26, 163, 196, 0.28);
}
.btn-ghost {
    border-color: rgba(255,255,255,0.28);
    color: #fff;
    background: rgba(255,255,255,0.06);
}
.btn-lg { min-height: 52px; padding: 0 28px; font-size: 16px; }
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 160px));
    gap: 18px;
    margin-top: 48px;
}
.stat-item strong {
    display: block;
    font-size: 28px;
    line-height: 1.2;
}
.stat-item span {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

.section { padding: 48px 0; }
.section-head {
    text-align: center;
    margin-bottom: 40px;
}
.section-head.left { text-align: left; }
.section-head.row-between {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    text-align: left;
}
.section-head h2 {
    margin: 0 0 12px;
    font-size: clamp(28px, 4vw, 36px);
    letter-spacing: -0.02em;
}
.section-head p {
    margin: 0;
    color: var(--muted);
    max-width: 46rem;
}
.section-head.row-between > div p,
.section-head.left p { margin-left: 0; margin-right: auto; }
.section-head p { margin-left: auto; margin-right: auto; }
.link-more {
    color: var(--bg-mid);
    font-weight: 600;
    white-space: nowrap;
}

.intro { padding-top: 40px; }
.pill-row {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}
.pill {
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(18, 98, 119, 0.08);
    color: var(--bg-deep);
    font-weight: 600;
    font-size: 14px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform .25s ease;
}
.feature-card:hover { transform: translateY(-4px); }
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    color: #fff;
    background: linear-gradient(135deg, var(--bg-mid), var(--accent));
    font-weight: 700;
}
.feature-card h3 { margin: 0 0 10px; font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); }
.feature-card ul {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}
.feature-card li {
    position: relative;
    padding-left: 18px;
    margin-top: 8px;
    color: var(--text);
}
.feature-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-2);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.news-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    transition: transform .25s ease, box-shadow .25s ease;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.news-card time,
.article-meta time,
.side-list time {
    color: var(--muted);
    font-size: 13px;
}
.news-card h3 {
    margin: 10px 0 18px;
    font-size: 18px;
    line-height: 1.45;
    min-height: 2.9em;
}
.news-read {
    color: var(--bg-mid);
    font-weight: 600;
    font-size: 14px;
}

.faq-list { display: grid; gap: 12px; }
.faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
}
.faq-q {
    width: 100%;
    text-align: left;
    border: 0;
    background: transparent;
    padding: 18px 20px;
    cursor: pointer;
    font-weight: 650;
    color: var(--text);
}
.faq-q::after {
    content: "+";
    float: right;
    color: var(--bg-mid);
    font-size: 18px;
}
.faq-item.open .faq-q::after { content: "–"; }
.faq-a {
    display: none;
    padding: 0 20px 18px;
    color: var(--muted);
}
.faq-item.open .faq-a { display: block; }
.faq-a p { margin: 0; }

.about {
    background:
        linear-gradient(180deg, rgba(18, 98, 119, 0.05), transparent 40%),
        var(--bg);
}
.about-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 36px;
    align-items: center;
}
.about-text { color: var(--muted); }
.about-list {
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}
.about-list li {
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255,255,255,0.8);
    border: 1px solid var(--line);
}
.about-stats {
    display: grid;
    gap: 16px;
}
.about-stat {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--line);
    padding: 24px;
    box-shadow: var(--shadow);
}
.about-stat strong {
    display: block;
    font-size: 34px;
    color: var(--bg-mid);
}
.about-stat span { color: var(--muted); }

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.review-card {
    margin: 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px;
    box-shadow: var(--shadow);
}
.review-card p {
    margin: 0 0 20px;
    color: var(--muted);
}
.review-card footer {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.review-card strong { color: var(--text); }
.review-card span { color: var(--muted); font-size: 13px; }

.cta { padding-top: 24px; padding-bottom: 48px; }
.cta-box {
    text-align: center;
    color: #fff;
    border-radius: 28px;
    padding: 40px 20px;
    background:
        radial-gradient(circle at 20% 20%, rgba(26,163,196,.35), transparent 35%),
        linear-gradient(135deg, #062832, #126277 55%, #0f8a7d);
    box-shadow: var(--shadow);
    animation: pulseGlow 4s ease-in-out infinite;
}
.cta-box h2 { margin: 0 0 10px; font-size: clamp(28px, 4vw, 36px); }
.cta-box p { margin: 0 0 24px; color: rgba(255,255,255,0.82); }

.page-banner {
    padding: 36px 0 22px;
    background:
        linear-gradient(135deg, rgba(11,61,74,0.92), rgba(18,98,119,0.88)),
        #0b3d4a;
    color: #fff;
}
.page-banner.compact { padding: 28px 0 18px; }
.page-banner h1 {
    margin: 8px 0 8px;
    font-size: clamp(28px, 4vw, 40px);
}
.page-banner p { margin: 0; color: rgba(255,255,255,0.78); }
.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}
.breadcrumb a:hover { color: #fff; }
.article-time { margin-top: 10px !important; }

.article-list { display: grid; gap: 14px; }
.article-item {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 22px 24px;
    transition: transform .2s ease, box-shadow .2s ease;
}
.article-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.article-item h2 {
    margin: 8px 0 12px;
    font-size: 22px;
    line-height: 1.4;
}
.article-link {
    color: var(--bg-mid);
    font-weight: 600;
    font-size: 14px;
}
.pager {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 28px;
}
.pager-btn {
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(18, 98, 119, 0.1);
    color: var(--bg-deep);
    font-weight: 600;
}
.pager-info { color: var(--muted); font-size: 14px; }

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
    align-items: start;
}
.article-body,
.side-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.article-body { padding: 28px; }
.rich-content {
    color: var(--text);
    overflow-wrap: anywhere;
}
.rich-content img { border-radius: 12px; margin: 12px 0; }
.rich-content p { margin: 0 0 1em; }
.rich-content h1,
.rich-content h2,
.rich-content h3 { margin: 1.2em 0 0.6em; }
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    font-size: 14px;
}
.article-nav a { color: var(--bg-mid); }
.side-card { padding: 22px; }
.side-card h3 { margin: 0 0 14px; font-size: 18px; }
.side-list {
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    display: grid;
    gap: 14px;
}
.side-list a {
    display: block;
    font-weight: 600;
    line-height: 1.45;
}
.side-empty { color: var(--muted); font-size: 14px; }
.empty-box {
    text-align: center;
    padding: 48px 20px;
    border-radius: var(--radius);
    border: 1px dashed var(--line);
    color: var(--muted);
    background: rgba(255,255,255,0.7);
}

.site-footer {
    margin-top: 40px;
    background: #072830;
    color: rgba(255,255,255,0.78);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 28px;
    padding: 48px 0 36px;
}
.footer-brand h3,
.footer-links h4 {
    margin: 0 0 14px;
    color: #fff;
}
.footer-brand p { margin: 0; max-width: 52ch; line-height: 1.6; }
.footer-links {
    display: grid;
    gap: 8px;
    align-content: start;
}
.footer-links a:hover { color: #fff; }
.footer-links p { margin: 0; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 16px 0 24px;
    font-size: 13px;
}
.footer-bottom .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 16px;
}
.footer-keywords {
    opacity: 0.72;
}

body.modal-open {
    overflow: hidden;
    touch-action: none;
}
.kefu-modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 9999;
    display: none;
}
.kefu-modal.open {
    display: block;
}
.kefu-mask {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.55);
}
.kefu-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    width: 320px;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0;
    padding: 0;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.kefu-close {
    position: absolute;
    top: 6px;
    right: 8px;
    z-index: 2;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    font-size: 28px;
    line-height: 40px;
    color: #666;
    cursor: pointer;
}
.kefu-body {
    padding: 36px 24px 28px;
    text-align: center;
}
.kefu-body h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
    color: #16323a;
}
.kefu-tip {
    margin: 0 0 20px;
    font-size: 13px;
    line-height: 1.5;
    color: #5f7a82;
}
.kefu-qrcode-wrap {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    padding: 8px;
    border: 1px solid rgba(18, 98, 119, 0.12);
    border-radius: 12px;
    background: #fff;
    box-sizing: border-box;
}
.kefu-qrcode {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    margin: 0;
    border: 0;
    border-radius: 6px;
}
.kefu-empty {
    padding: 40px 12px;
    border: 1px dashed rgba(18, 98, 119, 0.2);
    border-radius: 12px;
    color: #5f7a82;
    font-size: 14px;
}

@media (max-width: 480px) {
    .kefu-dialog {
        width: 280px;
    }
    .kefu-qrcode-wrap {
        width: 180px;
        height: 180px;
    }
    .kefu-body {
        padding: 32px 18px 22px;
    }
}

@keyframes rise {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 18px 50px rgba(11, 61, 74, 0.18); }
    50% { box-shadow: 0 22px 60px rgba(26, 163, 196, 0.28); }
}

@media (max-width: 960px) {
    .feature-grid,
    .news-grid,
    .review-grid,
    .about-grid,
    .footer-grid,
    .article-layout {
        grid-template-columns: 1fr;
    }
    .hero-stats { grid-template-columns: repeat(3, 1fr); }
    .section-head.row-between {
        flex-direction: column;
        align-items: flex-start;
    }
    .section { padding: 40px 0; }
    .footer-grid { padding: 36px 0 28px; gap: 22px; }
}
@media (max-width: 768px) {
    .container,
    .container.narrow {
        width: calc(100% - 24px);
    }
    .header-inner { min-height: 56px; }
    .brand-name { font-size: 16px; }
    .brand-mark {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    .nav-toggle { display: inline-block; }
    .site-header { position: sticky; }
    .site-nav {
        display: none;
        position: absolute;
        left: 12px;
        right: 12px;
        top: 56px;
        flex-direction: column;
        align-items: stretch;
        padding: 10px;
        border-radius: 14px;
        background: #fff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
        max-height: calc(100vh - 72px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    .site-nav a {
        padding: 12px 14px;
        font-size: 15px;
    }
    .site-nav.open { display: flex; }
    .site-nav .nav-cta { margin-left: 0; text-align: center; }
    .hero { min-height: auto; }
    .hero-inner { padding: 36px 0 48px; }
    .hero-title { font-size: clamp(28px, 8vw, 40px); }
    .hero-desc { font-size: 15px; }
    .hero-actions { margin-top: 24px; }
    .hero-actions .btn { width: 100%; }
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: 28px;
    }
    .section { padding: 32px 0; }
    .section-head { margin-bottom: 24px; }
    .section-head h2 { font-size: 24px; }
    .intro { padding-top: 28px; }
    .feature-card,
    .news-card,
    .review-card,
    .article-item,
    .article-body,
    .side-card {
        padding: 18px;
        border-radius: 14px;
    }
    .feature-grid,
    .news-grid,
    .review-grid { gap: 12px; }
    .page-banner { padding: 28px 0 18px; }
    .page-banner.compact { padding: 22px 0 14px; }
    .page-banner h1 { font-size: 22px; line-height: 1.35; word-break: break-word; }
    .article-body { padding: 16px; }
    .rich-content { font-size: 15px; }
    .rich-content table { display: block; overflow-x: auto; }
    .article-nav {
        flex-direction: column;
        gap: 10px;
    }
    .cta { padding-bottom: 32px; }
    .cta-box {
        padding: 28px 16px;
        border-radius: 18px;
    }
    .cta-box .btn { width: 100%; }
    .footer-grid { padding: 28px 0 20px; }
    .footer-brand p { max-width: none; font-size: 13px; }
    .footer-bottom .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .footer-keywords {
        font-size: 12px;
        line-height: 1.5;
        word-break: break-all;
    }
    .pager {
        flex-wrap: wrap;
        gap: 10px;
    }
}
@media (max-width: 480px) {
    .hero-stats { gap: 8px; }
    .stat-item strong { font-size: 22px; }
    .pill-row { gap: 8px; }
    .pill { padding: 8px 12px; font-size: 12px; }
}