* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: #22303d;
    background: #f5f7fa;
    font-family: Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    letter-spacing: 0;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid #e4e9ef;
    backdrop-filter: blur(10px);
}
.nav-wrap {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #16324f;
    font-weight: 800;
}
.brand img { width: 42px; height: 42px; object-fit: contain; }
.brand span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
    padding: 9px 13px;
    border-radius: 6px;
    color: #4b5c6f;
    font-size: 15px;
    font-weight: 700;
}
.site-nav a:hover { color: #1f5f99; background: #edf5fc; }
.site-search {
    position: relative;
    width: 180px;
}
.site-search input {
    width: 100%;
    height: 38px;
    border: 1px solid #d8e2ec;
    border-radius: 6px;
    padding: 0 12px;
    color: #243647;
    outline: none;
}
.site-search input:focus {
    border-color: #3182ce;
    box-shadow: 0 0 0 3px rgba(49, 130, 206, .12);
}
.search-results {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 260px;
    padding: 8px;
    border: 1px solid #dbe5ef;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 16px 32px rgba(25, 42, 62, .14);
}
.search-results.show { display: grid; gap: 4px; }
.search-results a {
    padding: 8px 10px;
    border-radius: 6px;
    color: #28445f;
    font-size: 14px;
}
.search-results a:hover { background: #edf5fc; color: #1f5f99; }
.hero {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    color: #fff;
    background: #1d3f5f center center / cover no-repeat;
    overflow: hidden;
}
.hero-slider,
.hero-slide {
    position: absolute;
    inset: 0;
}
.hero-slide {
    background: #1d3f5f center center / cover no-repeat;
    opacity: 0;
    animation: heroFade 18s infinite;
}
.hero-slide:nth-child(1) { animation-delay: 0s; }
.hero-slide:nth-child(2) { animation-delay: 6s; }
.hero-slide:nth-child(3) { animation-delay: 12s; }
@keyframes heroFade {
    0%, 30% { opacity: 1; }
    36%, 100% { opacity: 0; }
}
.hero-shade,
.partner-shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(18, 42, 65, .88), rgba(28, 91, 137, .72));
}
.hero-inner { position: relative; z-index: 1; padding: 104px 0 92px; }
.eyebrow,
.section-kicker {
    margin: 0 0 12px;
    color: #0f766e;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}
.hero .eyebrow { color: #a7f3d0; }
.hero h1 {
    max-width: 820px;
    margin: 0;
    font-size: clamp(36px, 6vw, 64px);
    line-height: 1.12;
    letter-spacing: 0;
}
.hero-copy {
    max-width: 680px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, .9);
    font-size: 19px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-weight: 800;
}
.btn.primary { background: #f59e0b; color: #111827; }
.btn.ghost { border-color: rgba(255, 255, 255, .45); color: #fff; background: rgba(255, 255, 255, .08); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 44px; }
.hero-stats span {
    min-width: 142px;
    padding: 14px 18px;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 8px;
    background: rgba(255, 255, 255, .1);
}
.hero-stats strong { display: block; font-size: 24px; line-height: 1.2; }
.section { padding: 72px 0; border-bottom: 1px solid #e8edf2; }
.section h2 {
    margin: 0 0 22px;
    color: #1c4f7c;
    font-size: clamp(26px, 4vw, 36px);
    line-height: 1.25;
}
.section p { color: #536170; font-size: 16px; }
.lead { color: #35485a; font-size: 18px; }
.two-col {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
    gap: 42px;
    align-items: center;
}
.image-panel {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #dfe7ef;
    background: #fff;
    box-shadow: 0 14px 32px rgba(35, 56, 78, .1);
}
.image-panel img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.advantage-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 26px; }
.advantage-item {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    border: 1px solid #dfe8f0;
    border-radius: 8px;
    background: #fff;
    color: #183a5b;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(34, 48, 61, .05);
}
.business-section { background: #fff; }
.section-head { display: flex; justify-content: space-between; gap: 32px; align-items: end; margin-bottom: 28px; }
.section-head p { max-width: 460px; margin: 0; }
.business-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.business-card {
    min-height: 220px;
    padding: 24px;
    border: 1px solid #e1e8ef;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 10px 24px rgba(33, 50, 69, .06);
}
.card-index { display: inline-block; margin-bottom: 18px; color: #0f766e; font-size: 13px; font-weight: 900; }
.business-card h3 { margin: 0 0 10px; color: #1e527f; font-size: 20px; }
.business-card p { margin: 0; }
.package-section,
.news-section,
.payment-section,
.partners-section {
    background: #f5f7fa;
}
.package-grid,
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.package-card,
.news-card {
    padding: 24px;
    border: 1px solid #dfe8f0;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 10px 24px rgba(33, 50, 69, .06);
}
.package-card h3 {
    margin: 0 0 8px;
    color: #1c4f7c;
    font-size: 21px;
}
.package-card ul,
.check-list {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}
.package-card li,
.check-list li {
    position: relative;
    margin: 9px 0;
    padding-left: 22px;
    color: #536170;
}
.package-card li::before,
.check-list li::before {
    position: absolute;
    left: 0;
    top: .1em;
    color: #0f766e;
    content: "✓";
    font-weight: 900;
}
.text-link {
    display: inline-block;
    margin-top: 16px;
    color: #1f5f99;
    font-weight: 900;
}
.showcase-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.showcase-grid figure {
    margin: 0;
    overflow: hidden;
    border: 1px solid #dde6ee;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 8px 20px rgba(35, 56, 78, .06);
}
.showcase-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.showcase-grid figcaption { padding: 12px 14px; color: #34495d; font-weight: 800; }
.showcase-grid figcaption span {
    display: block;
    margin-top: 4px;
    color: #687789;
    font-size: 13px;
    font-weight: 400;
}
.case-item { display: none; }
.case-item.active { display: block; }
.case-grid .business-card { min-height: 160px; }
.case-card.has-media {
    padding: 0;
    overflow: hidden;
}
.case-card-body { padding: 24px; }
.case-card:not(.has-media) .case-card-body { padding: 0; }
.case-media {
    width: 100%;
    border-bottom: 1px solid #e1e8ef;
    background: #111827;
}
.case-media img,
.case-media video {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}
.case-media video {
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    background: #111827;
}
.case-media.portrait {
    display: flex;
    justify-content: center;
}
.case-media.portrait video {
    width: min(100%, 280px);
    max-height: 560px;
    aspect-ratio: 9 / 16;
}
.case-media.landscape video {
    aspect-ratio: 16 / 9;
}
.case-pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}
.case-page-btn {
    min-width: 42px;
    min-height: 38px;
    border: 1px solid #3182ce;
    border-radius: 6px;
    background: #fff;
    color: #1f5f99;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}
.case-page-btn.active,
.case-page-btn:hover {
    background: #3182ce;
    color: #fff;
}
.case-note {
    margin-top: 30px;
    padding: 22px;
    border: 1px solid #dfe8f0;
    border-radius: 8px;
    background: #fff;
    text-align: center;
    box-shadow: 0 8px 20px rgba(35, 56, 78, .06);
}
.case-note p { margin: 0; }
.case-note strong {
    display: block;
    margin-top: 8px;
    color: #1c4f7c;
    font-size: 17px;
}
.news-card strong {
    display: block;
    color: #1c4f7c;
    font-size: 18px;
}
.news-card p { margin-bottom: 0; }
.partner-section {
    position: relative;
    color: #fff;
    background: #204d72 center center / cover no-repeat;
    overflow: hidden;
}
.partner-inner { position: relative; z-index: 1; max-width: 900px; }
.partner-section .section-kicker { color: #a7f3d0; }
.partner-section h2 { color: #fff; }
.partner-section p { max-width: 840px; color: rgba(255, 255, 255, .88); font-size: 18px; }
.partner-policy {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
}
.partner-policy span {
    padding: 10px 14px;
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 6px;
    background: rgba(255, 255, 255, .12);
    color: #fff;
    font-weight: 800;
}
.tag-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}
.tag-grid span,
.partner-logo-grid div {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: 1px solid #dfe8f0;
    border-radius: 8px;
    background: #fff;
    color: #1c4f7c;
    font-weight: 900;
    box-shadow: 0 8px 18px rgba(34, 48, 61, .05);
}
.guide-section { background: #fff; }
.guide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}
.guide-grid article {
    padding: 26px;
    border: 1px solid #dfe8f0;
    border-radius: 8px;
    background: #f8fafc;
}
.partner-logo-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
}
.contact-section { background: #f5f7fa; }
.contact-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(320px, 1.05fr); gap: 30px; align-items: start; }
.contact-box,
.message-form {
    border: 1px solid #dde6ee;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 12px 26px rgba(33, 50, 69, .07);
}
.contact-box { padding: 22px; }
.contact-item {
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #edf1f5;
}
.contact-item:last-child { border-bottom: 0; }
.contact-item span { color: #6b7886; }
.contact-item strong { color: #243647; word-break: break-word; }
.copy-btn {
    border: 1px solid #cbd8e4;
    border-radius: 6px;
    background: #fff;
    color: #1f5f99;
    padding: 7px 10px;
    font: inherit;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}
.copy-btn:hover { background: #edf5fc; }
.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}
.btn.secondary {
    border-color: #cbd8e4;
    background: #fff;
    color: #1f5f99;
}
.qr-row {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-top: 18px;
    padding: 16px;
    border: 1px dashed #cbd8e4;
    border-radius: 8px;
    background: #fff;
}
.qr-row img { width: 110px; height: 110px; object-fit: cover; border-radius: 6px; }
.qr-row p { margin: 0; }
.message-form { padding: 26px; }
.message-form h3 { margin: 0 0 18px; color: #1c4f7c; font-size: 22px; }
.message-form label { display: block; margin: 15px 0 7px; color: #34495d; font-weight: 800; }
.message-form input,
.message-form textarea {
    width: 100%;
    border: 1px solid #cfdbe6;
    border-radius: 6px;
    padding: 11px 12px;
    color: #22303d;
    font: inherit;
    outline: none;
}
.message-form input:focus,
.message-form textarea:focus { border-color: #3182ce; box-shadow: 0 0 0 3px rgba(49, 130, 206, .14); }
.message-form textarea { resize: vertical; }
.message-form button {
    width: 100%;
    min-height: 46px;
    margin-top: 18px;
    border: 0;
    border-radius: 6px;
    background: #1f5f99;
    color: #fff;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}
.message-form button:hover { background: #194e7e; }
.site-footer { background: #16212c; color: #aeb8c2; padding: 30px 0; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
.site-footer p { margin: 0; }
.site-footer a { color: #d5e8ff; }
.float-service {
    position: fixed;
    right: 18px;
    bottom: 24px;
    z-index: 30;
    display: grid;
    gap: 8px;
}
.float-service a,
.float-service button {
    min-width: 54px;
    border: 0;
    border-radius: 6px;
    background: #1f5f99;
    color: #fff;
    padding: 9px 10px;
    font: inherit;
    font-size: 13px;
    font-weight: 900;
    text-align: center;
    box-shadow: 0 10px 22px rgba(31, 95, 153, .22);
    cursor: pointer;
}
.float-service a:hover,
.float-service button:hover { background: #194e7e; }
.copy-toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    z-index: 40;
    transform: translate(-50%, 20px);
    opacity: 0;
    pointer-events: none;
    border-radius: 8px;
    background: #111827;
    color: #fff;
    padding: 10px 14px;
    transition: opacity .18s ease, transform .18s ease;
}
.copy-toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}
.contact-dialog[hidden] { display: none; }
.contact-dialog {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: rgba(15, 23, 42, .52);
}
.contact-dialog-panel {
    width: min(390px, 100%);
    padding: 26px;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 24px 60px rgba(15, 23, 42, .28);
    text-align: center;
}
.contact-dialog-panel h3 {
    margin: 0 0 10px;
    color: #173b61;
    font-size: 22px;
}
.contact-dialog-panel p {
    margin: 0 0 20px;
    color: #536475;
    line-height: 1.7;
}
.contact-dialog-panel button {
    min-width: 108px;
    min-height: 42px;
    border: 0;
    border-radius: 6px;
    background: #1f6feb;
    color: #fff;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}
.contact-dialog-panel button:hover { background: #195cc4; }
@media (max-width: 920px) {
    .two-col,
    .contact-grid,
    .guide-grid { grid-template-columns: 1fr; }
    .business-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .showcase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .package-grid,
    .news-grid { grid-template-columns: 1fr; }
    .tag-grid,
    .partner-logo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .section-head { display: block; }
}
@media (max-width: 680px) {
    .container { width: min(100% - 28px, 1120px); }
    .nav-wrap { min-height: auto; padding: 12px 0; align-items: flex-start; flex-direction: column; }
    .site-nav { width: 100%; justify-content: space-between; gap: 4px; }
    .site-nav a { padding: 8px 9px; font-size: 14px; }
    .site-search { width: 100%; }
    .search-results { left: 0; right: auto; width: 100%; }
    .hero { min-height: 560px; }
    .hero-inner { padding: 76px 0; }
    .hero-copy { font-size: 17px; }
    .hero-stats span { width: 100%; }
    .section { padding: 52px 0; }
    .business-grid,
    .showcase-grid,
    .advantage-grid { grid-template-columns: 1fr; }
    .contact-item { grid-template-columns: 1fr; gap: 2px; }
    .contact-item .copy-btn { justify-self: start; margin-top: 6px; }
    .qr-row { align-items: flex-start; flex-direction: column; }
    .float-service { right: 12px; bottom: 14px; }
    .footer-inner { display: block; }
    .footer-inner p + p { margin-top: 8px; }
}