* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    color: #1a1a1a;
    background: #fff;
    line-height: 1.7;
    font-size: 15px;
}
.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Header */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #eee;
}
.main-nav {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.logo {
    font-size: 20px; font-weight: 700;
    letter-spacing: 1px;
}
.nav-links {
    display: flex; align-items: center; gap: 36px;
}
.nav-links a {
    font-size: 14px; font-weight: 500; color: #444;
    transition: color 0.2s;
}
.nav-links a:hover { color: #000; }
.nav-contact {
    color: #000 !important;
    border: 1px solid #000; padding: 8px 18px !important;
}
.nav-user a {
    padding-left: 24px;
    border-left: 1px solid #ddd;
}
.menu-toggle {
    display: none;
    background: none; border: none; cursor: pointer;
    flex-direction: column; gap: 5px; padding: 8px;
}
.menu-toggle span {
    display: block; width: 22px; height: 2px; background: #000;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 28px; font-size: 14px; font-weight: 500;
    cursor: pointer; transition: all 0.2s;
}
.btn-dark { background: #000; color: #fff; }
.btn-dark:hover { background: #333; }
.btn-line { border: 1px solid #000; color: #000; }
.btn-line:hover { background: #000; color: #fff; }
.btn-text {
    font-size: 15px; font-weight: 500; color: #000;
    margin-left: 16px;
}
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-full { width: 100%; }

/* Section */
section { padding: 96px 0; }
.section-head {
    text-align: center; margin-bottom: 64px;
}
.section-head.left { text-align: left; }
.section-label {
    display: inline-block;
    font-size: 13px; font-weight: 500; color: #888;
    letter-spacing: 1px; margin-bottom: 12px;
    text-transform: uppercase;
}
.section-head h2 {
    font-size: 40px; font-weight: 700; line-height: 1.2;
}
.section-label.light { color: rgba(255,255,255,0.6); }

/* Hero */
.hero { padding-top: 160px; padding-bottom: 96px; }
.hero-wrap {
    display: grid; grid-template-columns: 1.1fr 1fr;
    gap: 64px; align-items: center;
}
.hero-text h1 {
    font-size: 56px; font-weight: 700; line-height: 1.15;
    margin-bottom: 28px;
}
.hero-desc {
    font-size: 17px; color: #666; line-height: 1.8;
    margin-bottom: 40px; max-width: 520px;
}
.hero-actions {
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.hero-img img {
    width: 100%; border-radius: 4px;
}

/* Platforms */
.platform-list {
    border-top: 1px solid #eee;
}
.platform-row {
    display: grid; grid-template-columns: 160px 1fr 40px;
    gap: 32px; align-items: center;
    padding: 28px 0;
    border-bottom: 1px solid #eee;
    transition: all 0.3s;
}
.platform-row:hover {
    padding-left: 16px;
    background: #fafafa;
}
.p-name {
    font-size: 22px; font-weight: 600;
}
.p-desc { color: #666; font-size: 15px; }
.p-arrow { font-size: 20px; color: #999; transition: 0.3s; }
.platform-row:hover .p-arrow { color: #000; transform: translateX(4px); }

/* Services */
.service-tabs {
    display: flex; gap: 0; border-bottom: 1px solid #eee;
    margin-bottom: 40px;
    overflow-x: auto;
}
.s-tab {
    background: none; border: none; cursor: pointer;
    padding: 16px 28px; font-size: 15px; font-weight: 500;
    color: #888; position: relative; white-space: nowrap;
    transition: color 0.2s;
}
.s-tab.active { color: #000; }
.s-tab.active::after {
    content: ''; position: absolute; bottom: -1px; left: 0; right: 0;
    height: 2px; background: #000;
}
.s-content { display: none; }
.s-content.active { display: block; }
.service-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr;
    gap: 24px;
}
.service-card {
    border: 1px solid #eee; padding: 32px;
    transition: all 0.3s;
    display: flex; flex-direction: column;
}
.service-card:hover {
    border-color: #000;
}
.service-card.main {
    background: #fafafa;
}
.service-card h3 {
    font-size: 20px; font-weight: 600;
    margin-bottom: 16px;
}
.s-desc {
    font-size: 14px; color: #666; line-height: 1.7;
    margin-bottom: 20px; flex: 1;
}
.s-list {
    margin-bottom: 24px;
}
.s-list li {
    font-size: 14px; color: #555;
    padding: 6px 0;
}
.s-bottom {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid #eee;
}
.s-price {
    font-size: 16px; font-weight: 600;
}

/* Values */
.values { background: #fafafa; }
.value-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.value-item {
    padding: 32px 0;
}
.v-num {
    font-size: 40px; font-weight: 700; color: #ddd;
    display: block; margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
}
.value-item h3 {
    font-size: 18px; font-weight: 600; margin-bottom: 12px;
}
.value-item p {
    font-size: 14px; color: #666; line-height: 1.7;
}

/* Process */
.process-list {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 24px; position: relative;
}
.process-list::before {
    content: ''; position: absolute;
    top: 32px; left: 12.5%; right: 12.5%;
    height: 1px; background: #eee;
    z-index: 0;
}
.p-item { text-align: center; position: relative; z-index: 1; }
.p-step {
    width: 64px; height: 64px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid #000; background: #fff;
    font-size: 22px; font-weight: 700;
    margin: 0 auto 24px;
    font-family: 'Inter', sans-serif;
}
.p-content h3 {
    font-size: 17px; font-weight: 600; margin-bottom: 10px;
}
.p-content p {
    font-size: 14px; color: #666; line-height: 1.7;
}

/* Notice */
.notice-grid {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.notice-grid > div {
    padding: 28px; border: 1px solid #eee;
}
.notice-grid h4 {
    font-size: 16px; font-weight: 600; margin-bottom: 12px;
}
.notice-grid p {
    font-size: 14px; color: #666; line-height: 1.7;
}

/* News */
.news { background: #fafafa; }
ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    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: 1px solid #eee;
    transition: all 0.3s;
}
ul.article-cards > li.article-card:hover {
    border-color: #000; transform: translateY(-2px);
}
.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: #1a1a1a;
}
.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-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    border-bottom: 1px solid #eee;
}
.faq-q {
    width: 100%; background: none; border: none; cursor: pointer;
    padding: 24px 0; text-align: left;
    font-size: 16px; font-weight: 500;
    display: flex; justify-content: space-between; align-items: center;
    font-family: inherit;
}
.faq-q span {
    font-size: 24px; font-weight: 300; color: #999;
    transition: transform 0.3s;
}
.faq-item.open .faq-q span { transform: rotate(45deg); color: #000; }
.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: 24px; font-size: 14px; color: #666; line-height: 1.8;
}

/* About */
.about-wrap {
    display: grid; grid-template-columns: 1fr 2fr;
    gap: 80px; align-items: start;
}
.about-text p {
    font-size: 15px; color: #444; line-height: 1.9;
    margin-bottom: 20px;
}

/* Apply */
.apply { background: #000; color: #fff; }
.apply .section-head { margin-bottom: 0; }
.apply-wrap {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 80px; align-items: start;
}
.apply-text h2 {
    font-size: 40px; font-weight: 700; line-height: 1.2;
    margin-bottom: 24px;
}
.apply-text > p {
    color: rgba(255,255,255,0.7); font-size: 15px; line-height: 1.8;
    margin-bottom: 32px;
}
.contact-info p {
    font-size: 15px; color: rgba(255,255,255,0.8);
    padding: 10px 0;
}
.contact-info a { color: #fff; }
.apply-form {
    background: rgba(255,255,255,0.05); padding: 40px;
    border: 1px solid rgba(255,255,255,0.1);
}
.form-row {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block; font-size: 13px; color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%; background: transparent; border: none;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding: 10px 0; font-size: 14px; color: #fff;
    font-family: inherit;
}
.form-group input::placeholder, .form-group textarea::placeholder {
    color: rgba(255,255,255,0.3);
}
.form-group select option { background: #000; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-bottom-color: #fff;
}
.apply-form .btn {
    margin-top: 24px;
    background: #fff; color: #000;
    border: 1px solid #fff;
}
.apply-form .btn:hover { background: transparent; color: #fff; }

/* Footer */
.site-footer {
    background: #0a0a0a; color: rgba(255,255,255,0.7);
    padding: 64px 0 32px;
    font-size: 14px;
}
.footer-top {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px; padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-info h3 {
    font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px;
}
.footer-info p { margin-bottom: 8px; color: rgba(255,255,255,0.6); }
.footer-info a { color: #fff; }
.footer-nav h4 {
    font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 20px;
}
.footer-nav a {
    display: block; padding: 6px 0;
    color: rgba(255,255,255,0.6); transition: color 0.2s;
}
.footer-nav a:hover { color: #fff; }
.footer-bottom {
    padding-top: 32px; text-align: center;
    color: rgba(255,255,255,0.4); font-size: 13px;
}

/* Article Detail */
.crumb { padding: 96px 0 24px; background: #fafafa; }
.crumb a { color: #666; font-size: 13px; }
.crumb span { color: #999; margin: 0 8px; font-size: 13px; }
.crumb a:hover { color: #000; }
.article-page { padding-top: 40px; padding-bottom: 80px; }
.article-content { max-width: 780px; margin: 0 auto; }
.art-header { margin-bottom: 40px; }
.art-header h1 {
    font-size: 36px; font-weight: 700; line-height: 1.3;
    margin-bottom: 20px;
}
.art-meta {
    display: flex; flex-direction: column; gap: 8px;
    padding-bottom: 20px; border-bottom: 1px solid #eee;
}
.art-summary { font-size: 15px; color: #666; line-height: 1.7; }
.art-date { font-size: 13px; color: #999; }
.art-cover { margin-bottom: 40px; }
.art-cover img { width: 100%; }
.art-body { font-size: 16px; line-height: 1.9; color: #333; }
.art-body p { margin-bottom: 20px; }
.art-body h2, .art-body h3, .art-body h4 {
    margin: 32px 0 16px; font-weight: 600;
}
.art-body h2 { font-size: 26px; }
.art-body h3 { font-size: 22px; }
.art-body h4 { font-size: 18px; }
.art-body img { max-width: 100%; height: auto; margin: 20px 0; }
.art-body ul, .art-body ol { margin: 16px 0; padding-left: 24px; }
.art-body li { margin-bottom: 8px; }
.art-cta {
    max-width: 780px; margin: 60px auto 40px;
    padding: 48px; background: #fafafa; text-align: center;
    border: 1px solid #eee;
}
.art-cta h3 { font-size: 24px; font-weight: 600; margin-bottom: 12px; }
.art-cta p { color: #666; margin-bottom: 24px; }
.cta-btns { display: flex; gap: 12px; justify-content: center; }
.art-back { text-align: center; }
.back {
    display: inline-block; font-size: 14px; color: #666;
    padding: 8px 0; border-bottom: 1px solid #ddd;
    transition: all 0.2s;
}
.back:hover { color: #000; border-color: #000; }

/* Responsive */
@media (max-width: 1024px) {
    .service-grid { grid-template-columns: 1fr; }
    .value-grid { grid-template-columns: repeat(2, 1fr); }
    .process-list { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .process-list::before { display: none; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .about-wrap { grid-template-columns: 1fr; gap: 32px; }
    .apply-wrap { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    section { padding: 64px 0; }
    .hero { padding-top: 120px; }
    .hero-wrap { grid-template-columns: 1fr; gap: 40px; }
    .hero-text h1 { font-size: 36px; }
    .section-head h2 { font-size: 28px; }
    .platform-row { grid-template-columns: 1fr; gap: 8px; padding: 20px 0; }
    .p-arrow { display: none; }
    .notice-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .apply-form { padding: 28px 24px; }
    .menu-toggle { display: flex; }
    .nav-links {
        display: none; position: absolute; top: 72px; left: 0; right: 0;
        background: #fff; flex-direction: column; gap: 0;
        padding: 16px 20px; border-bottom: 1px solid #eee;
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 14px 0; border-bottom: 1px solid #f5f5f5; }
    .nav-user a { padding-left: 0; border-left: none; }
    .nav-contact {
        border: none !important; padding: 14px 0 !important;
    }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .art-header h1 { font-size: 26px; }
    .art-cta { padding: 32px 24px; }
}

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

/* Toast */
.toast {
    position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%);
    background: #000; color: #fff; padding: 14px 32px;
    font-size: 14px; z-index: 9999;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.toast.show { opacity: 1; }