* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #333; background: #fff; line-height: 1.7; font-size: 15px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.2s; }
ul { list-style: none; }

:root {
    --blue: #1e5db1;
    --blue-dark: #174a8f;
    --blue-light: #e8f1fb;
}

/* Top Bar */
.top-bar {
    background: #f5f7fa; border-bottom: 1px solid #eaeaea;
    font-size: 13px; color: #666; line-height: 36px;
}
.top-bar .container {
    display: flex; justify-content: space-between; align-items: center;
}
.top-links span { margin: 0 10px; color: #ddd; }
.top-links a:hover { color: var(--blue); }

/* Header */
.site-header {
    background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky; top: 0; z-index: 100;
}
.main-nav {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.logo-mark {
    font-size: 24px; font-weight: 700; color: var(--blue);
    letter-spacing: 1px;
}
.nav-list {
    display: flex; align-items: center; gap: 8px;
}
.nav-list > li > a {
    display: block; padding: 0 18px; font-size: 15px;
    color: #333; font-weight: 500; line-height: 72px;
}
.nav-list > li > a:hover { color: var(--blue); }
.nav-btn {
    background: var(--blue); color: #fff !important;
    padding: 0 28px !important; line-height: 40px !important;
    margin-left: 10px; border-radius: 4px;
}
.nav-btn:hover { background: var(--blue-dark) !important; }
.menu-toggle {
    display: none; background: none; border: none; cursor: pointer;
    flex-direction: column; gap: 5px; padding: 8px;
}
.menu-toggle span {
    display: block; width: 24px; height: 2px; background: #333;
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 28px; font-size: 15px; font-weight: 500;
    cursor: pointer; border-radius: 4px; transition: all 0.2s;
    border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.btn-outline { border-color: var(--blue); color: var(--blue); background: transparent; }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: #f0f0f0; }
.btn-sm { padding: 8px 20px; font-size: 13px; }
.btn-full { width: 100%; }

/* Section */
section { padding: 80px 0; }
.section-title { margin-bottom: 50px; }
.section-title.center { text-align: center; }
.sub-title {
    display: block; font-size: 13px; color: var(--blue);
    letter-spacing: 2px; font-weight: 600; margin-bottom: 12px;
}
.section-title h2 {
    font-size: 32px; font-weight: 700; color: #222;
    margin-bottom: 12px;
}
.section-title p {
    font-size: 15px; color: #666; max-width: 600px;
}
.section-title.center p { margin: 0 auto; }
.sub-title.light { color: rgba(255,255,255,0.7); }
.section-title.light h2 { color: #fff; }

/* Hero */
.hero {
    background: linear-gradient(135deg, #1e5db1 0%, #2a7de1 100%);
    color: #fff; padding: 80px 0;
}
.hero-inner {
    display: grid; grid-template-columns: 1.2fr 1fr;
    gap: 60px; align-items: center;
}
.hero-text h1 {
    font-size: 46px; font-weight: 700; line-height: 1.2;
    margin-bottom: 24px;
}
.hero-sub {
    font-size: 16px; line-height: 1.8; opacity: 0.9;
    margin-bottom: 36px;
}
.hero-btns {
    display: flex; gap: 16px; margin-bottom: 28px;
    flex-wrap: wrap;
}
.hero-tel {
    font-size: 15px; opacity: 0.9;
}
.hero-tel a { font-weight: 600; margin-left: 8px; }
.hero-banner {
    width: 100%; border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

/* Advantage Bar */
.advantage-bar {
    background: #fff; padding: 0;
    border-bottom: 1px solid #eee;
}
.adv-row {
    display: grid; grid-template-columns: repeat(5, 1fr);
}
.adv-col {
    padding: 32px 20px; text-align: center;
    border-right: 1px solid #eee;
}
.adv-col:last-child { border-right: none; }
.adv-col strong {
    display: block; font-size: 28px; font-weight: 700;
    color: var(--blue); margin-bottom: 6px;
    font-family: Arial, sans-serif;
}
.adv-col span {
    font-size: 14px; color: #666;
}

/* Platforms */
.plat-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.plat-item {
    border: 1px solid #e5e5e5; border-radius: 6px;
    padding: 28px; transition: all 0.3s;
}
.plat-item:hover {
    border-color: var(--blue);
    box-shadow: 0 10px 30px rgba(30,93,177,0.1);
    transform: translateY(-3px);
}
.plat-header {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 20px; padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}
.plat-dot {
    width: 10px; height: 10px; border-radius: 50%;
}
.plat-dot.dy { background: #000; }
.plat-dot.xhs { background: #ff2442; }
.plat-dot.wx { background: #07c160; }
.plat-dot.ks { background: #ff4906; }
.plat-dot.bili { background: #00a1d6; }
.plat-dot.all { background: var(--blue); }
.plat-header h3 {
    font-size: 18px; font-weight: 600;
}
.plat-item ul li {
    font-size: 14px; color: #555; padding: 6px 0;
    padding-left: 16px; position: relative;
}
.plat-item ul li::before {
    content: ''; position: absolute; left: 0; top: 14px;
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--blue); opacity: 0.5;
}
.more {
    display: inline-block; margin-top: 16px;
    font-size: 14px; color: var(--blue); font-weight: 500;
}
.more:hover { color: var(--blue-dark); }

/* Services */
.services { background: #f7f9fc; }
.svc-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.svc-card {
    background: #fff; border-radius: 8px;
    padding: 32px; border: 1px solid #eee;
    position: relative; transition: all 0.3s;
    display: flex; flex-direction: column;
}
.svc-card:hover {
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}
.svc-card.highlight {
    border-color: var(--blue);
    border-width: 2px;
}
.svc-ribbon {
    position: absolute; top: -1px; right: 20px;
    background: var(--blue); color: #fff;
    padding: 4px 12px; font-size: 12px;
    border-radius: 0 0 4px 4px;
}
.svc-card h3 {
    font-size: 20px; font-weight: 600; margin-bottom: 14px;
    color: #222;
}
.svc-intro {
    font-size: 14px; color: #666; line-height: 1.7;
    margin-bottom: 20px; flex: 1;
}
.svc-points {
    margin-bottom: 24px;
}
.svc-points li {
    font-size: 13px; color: #555; padding: 5px 0;
}
.svc-bottom {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 20px; border-top: 1px solid #f0f0f0;
}
.price {
    font-size: 18px; font-weight: 600; color: var(--blue);
}

/* Reasons */
.reasons { background: var(--blue); color: #fff; }
.reason-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.reason-item {
    background: rgba(255,255,255,0.08);
    border-radius: 8px; padding: 32px;
    transition: background 0.3s;
}
.reason-item:hover { background: rgba(255,255,255,0.12); }
.reason-icon {
    width: 56px; height: 56px;
    background: rgba(255,255,255,0.15);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
}
.reason-item h3 {
    font-size: 18px; font-weight: 600; margin-bottom: 10px;
}
.reason-item p {
    font-size: 14px; opacity: 0.85; line-height: 1.7;
}

/* Process */
.proc-flow {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 20px; position: relative;
}
.proc-flow::before {
    content: ''; position: absolute;
    top: 30px; left: 12.5%; right: 12.5%;
    height: 2px; background: #e0e0e0; z-index: 0;
}
.proc-item { text-align: center; position: relative; z-index: 1; }
.proc-num {
    width: 60px; height: 60px; line-height: 60px;
    background: #fff; border: 2px solid var(--blue);
    color: var(--blue); border-radius: 50%;
    font-size: 22px; font-weight: 700;
    margin: 0 auto 20px;
    font-family: Arial, sans-serif;
}
.proc-item h3 {
    font-size: 17px; font-weight: 600; margin-bottom: 10px;
}
.proc-item p {
    font-size: 14px; color: #666; line-height: 1.7;
}

/* News */
.news { background: #f7f9fc; }
ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px; list-style: none; margin: 0; padding: 0;
    width: 100%; box-sizing: border-box;
}
ul.article-cards > li.article-card {
    min-width: 0; width: auto; max-width: none;
    margin: 0; float: none; box-sizing: border-box;
    background: #fff; border-radius: 8px; overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s;
}
ul.article-cards > li.article-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-3px);
}
.article-card a { display: block; }
.article-card .card-thumb { width: 100%; overflow: hidden; }
.article-card .card-thumb img {
    display: block; width: 100%; max-width: 100%;
    height: 180px; object-fit: cover;
}
.article-card .card-body { padding: 20px; }
.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 15px; font-weight: 600; line-height: 1.5;
    margin-bottom: 10px; color: #222;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card .card-date {
    display: block; font-size: 12px; color: #999; margin-bottom: 8px;
}
.article-card .card-summary {
    overflow-wrap: anywhere;
    font-size: 13px; color: #666; line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid #eee; }
.faq-q {
    width: 100%; background: none; border: none; cursor: pointer;
    padding: 20px 0; text-align: left;
    font-size: 16px; font-weight: 500; color: #222;
    display: flex; justify-content: space-between; align-items: center;
    font-family: inherit;
}
.faq-q span {
    font-size: 24px; color: var(--blue); font-weight: 300;
    transition: transform 0.3s;
}
.faq-item.open .faq-q span { transform: rotate(45deg); }
.faq-a {
    max-height: 0; overflow: hidden; transition: max-height 0.3s;
}
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p {
    padding-bottom: 20px; font-size: 14px; color: #666; line-height: 1.8;
}

/* About */
.about-inner {
    display: grid; grid-template-columns: 1.5fr 1fr;
    gap: 60px; align-items: start;
}
.about-text h2 {
    font-size: 32px; font-weight: 700; margin: 12px 0 20px;
}
.about-text .lead {
    font-size: 17px; color: #222; line-height: 1.8;
    margin-bottom: 20px;
}
.about-text p {
    font-size: 15px; color: #555; line-height: 1.8;
    margin-bottom: 16px;
}
.about-actions {
    display: flex; gap: 16px; margin-top: 28px;
}
.about-card {
    background: var(--blue-light);
    padding: 24px; border-radius: 6px; margin-bottom: 16px;
    border-left: 4px solid var(--blue);
}
.about-card h4 {
    font-size: 16px; font-weight: 600; color: var(--blue);
    margin-bottom: 8px;
}
.about-card p {
    font-size: 14px; color: #555; margin: 0;
}

/* Apply */
.apply-box {
    background: linear-gradient(135deg, #1e5db1 0%, #2a7de1 100%);
    border-radius: 12px; padding: 56px;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 48px; color: #fff;
}
.apply-left h2 {
    font-size: 32px; font-weight: 700; margin: 12px 0 20px;
}
.apply-left > p {
    font-size: 15px; opacity: 0.9; line-height: 1.8;
    margin-bottom: 32px;
}
.contact-methods { display: grid; gap: 16px; }
.cm-item {
    padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,0.15);
}
.cm-label {
    display: block; font-size: 12px; opacity: 0.7;
    margin-bottom: 6px;
}
.cm-value {
    font-size: 18px; font-weight: 600;
}
.cm-value:hover { opacity: 0.8; }
.apply-form {
    background: #fff; padding: 36px; border-radius: 8px;
    color: #333;
}
.form-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.form-item { margin-bottom: 14px; }
.form-item label {
    display: block; font-size: 13px; font-weight: 500;
    margin-bottom: 6px; color: #333;
}
.form-item input, .form-item select, .form-item textarea {
    width: 100%; padding: 10px 12px;
    border: 1px solid #ddd; border-radius: 4px;
    font-size: 14px; font-family: inherit; color: #333;
    transition: border-color 0.2s;
}
.form-item textarea { resize: vertical; }
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
    outline: none; border-color: var(--blue);
}
.form-item input::placeholder, .form-item textarea::placeholder {
    color: #aaa;
}
.form-item select option { background: #fff; }
.apply-form .btn { margin-top: 8px; }

/* Footer */
.footer-top {
    background: #1a2b48; color: rgba(255,255,255,0.7);
    padding: 56px 0 40px; font-size: 14px;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 36px;
}
.foot-brand h3 {
    font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px;
}
.foot-brand p { line-height: 1.8; margin-bottom: 12px; }
.hotline strong a { color: #fff; font-size: 20px; }
.foot-col h4 {
    font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 20px;
}
.foot-col a {
    display: block; padding: 5px 0;
    transition: color 0.2s;
}
.foot-col a:hover { color: #fff; }
.footer-bottom {
    background: #132036; color: rgba(255,255,255,0.4);
    padding: 20px 0; font-size: 13px; text-align: center;
}

/* Article */
.crumb {
    padding: 20px 0; background: #f7f9fc;
    border-bottom: 1px solid #eee;
}
.crumb a { color: #666; font-size: 13px; }
.crumb span { color: #999; margin: 0 8px; font-size: 13px; }
.crumb a:hover { color: var(--blue); }
.article-sec { padding: 40px 0 80px; }
.article-box {
    max-width: 820px; margin: 0 auto;
    background: #fff; padding: 40px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    border-radius: 8px;
}
.art-hd {
    margin-bottom: 32px; padding-bottom: 24px;
    border-bottom: 1px solid #eee;
}
.art-hd h1 {
    font-size: 28px; font-weight: 700; line-height: 1.4;
    color: #222; margin-bottom: 16px;
}
.art-info {
    display: flex; flex-direction: column; gap: 8px;
}
.art-info span { font-size: 14px; color: #666; line-height: 1.7; }
.art-info time { font-size: 13px; color: #999; }
.art-cover { margin-bottom: 32px; border-radius: 6px; overflow: hidden; }
.art-cover img { width: 100%; }
.art-body { font-size: 16px; line-height: 1.9; color: #444; }
.art-body p { margin-bottom: 20px; }
.art-body h2, .art-body h3, .art-body h4 {
    margin: 28px 0 16px; font-weight: 600; color: #222;
}
.art-body h2 { font-size: 22px; }
.art-body h3 { font-size: 19px; }
.art-body h4 { font-size: 17px; }
.art-body img { max-width: 100%; border-radius: 6px; margin: 20px 0; }
.art-body ul, .art-body ol { margin: 16px 0; padding-left: 24px; }
.art-body li { margin-bottom: 8px; }
.art-cta-box {
    max-width: 820px; margin: 40px auto;
    background: var(--blue-light); border-radius: 8px;
    padding: 40px; text-align: center;
}
.art-cta-box h3 {
    font-size: 22px; font-weight: 600; color: var(--blue);
    margin-bottom: 12px;
}
.art-cta-box p { color: #555; margin-bottom: 24px; }
.art-cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.art-back-link { text-align: center; }
.art-back-link a {
    display: inline-block; font-size: 14px; color: #666;
    padding: 8px 20px; border: 1px solid #ddd; border-radius: 4px;
}
.art-back-link a:hover { border-color: var(--blue); color: var(--blue); }

/* Responsive */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; }
    .plat-grid { grid-template-columns: repeat(2, 1fr); }
    .svc-grid { grid-template-columns: repeat(2, 1fr); }
    .reason-grid { grid-template-columns: repeat(2, 1fr); }
    .proc-flow { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .proc-flow::before { display: none; }
    .about-inner { grid-template-columns: 1fr; gap: 40px; }
    .apply-box { grid-template-columns: 1fr; padding: 40px 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .top-bar { font-size: 12px; }
    .top-links span { display: none; }
    .menu-toggle { display: flex; }
    .nav-list {
        display: none; position: absolute; top: 72px; left: 0; right: 0;
        background: #fff; flex-direction: column; gap: 0;
        padding: 10px 0; box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    .nav-list.open { display: flex; }
    .nav-list > li > a { line-height: 48px; padding: 0 20px; }
    .nav-btn { margin: 8px 20px !important; text-align: center; line-height: 40px !important; }
    section { padding: 56px 0; }
    .hero { padding: 50px 0; }
    .hero-text h1 { font-size: 32px; }
    .section-title h2 { font-size: 24px; }
    .adv-row { grid-template-columns: repeat(2, 1fr); }
    .adv-col { padding: 20px; border-bottom: 1px solid #eee; }
    .plat-grid { grid-template-columns: 1fr; }
    .svc-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .apply-box { padding: 32px 24px; }
    .apply-form { padding: 28px 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .article-box { padding: 24px 20px; }
    .art-hd h1 { font-size: 22px; }
    .art-cta-box { padding: 28px 20px; }
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}

/* Toast */
.toast {
    position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%);
    background: var(--blue); color: #fff; padding: 14px 32px;
    border-radius: 4px; font-size: 14px; z-index: 9999;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
    box-shadow: 0 8px 30px rgba(30,93,177,0.3);
}
.toast.show { opacity: 1; }