:root {
    --bg: #fffaf2;
    --card: #ffffff;
    --ink: #1f2723;
    --muted: #5f6f68;
    --brand: #df6a55;
    --brand-dark: #9d483b;
    --green: #4f7b65;
    --soft: #f6e8d8;
    --line: #eadbca;
    --shadow: 0 18px 45px rgba(77, 61, 45, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, var(--bg), #ffffff 45%, #fff7ef);
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 250, 242, 0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}
.nav-wrap, .search-panel, main, .footer-grid, .copyright {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}
.nav-wrap {
    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: 900;
    font-size: 1.22rem;
    color: var(--brand-dark);
    white-space: nowrap;
}
.brand img { border-radius: 16px; }
.main-menu {
    display: flex;
    gap: 4px;
    padding: 0;
    margin: 0;
    list-style: none;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.main-menu a {
    display: inline-block;
    padding: 9px 12px;
    border-radius: 999px;
    color: #405148;
    font-weight: 700;
    font-size: 0.94rem;
}
.main-menu a:hover { background: #fff; box-shadow: var(--shadow); color: var(--brand-dark); }
.nav-toggle { display: none; }
.search-panel { padding-bottom: 14px; }
.search-box {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 14px;
    box-shadow: 0 10px 24px rgba(77, 61, 45, 0.08);
}
.search-box label { font-weight: 800; color: var(--brand-dark); display: block; margin-bottom: 8px; }
.search-row { display: flex; gap: 10px; }
.search-row input {
    flex: 1;
    border: 1px solid #ead9c7;
    border-radius: 16px;
    padding: 12px 14px;
    font-size: 1rem;
    outline: none;
}
.search-row button, .btn {
    border: 0;
    border-radius: 16px;
    padding: 12px 18px;
    background: var(--brand);
    color: #fff;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(223, 106, 85, 0.24);
}
.search-message { margin: 8px 2px 0; color: var(--muted); font-size: 0.92rem; }
main { padding: 34px 0 56px; }
.breadcrumb {
    color: var(--muted);
    font-size: 0.92rem;
    margin: 0 0 18px;
}
.hero {
    display: grid;
    grid-template-columns: 1.04fr 0.96fr;
    gap: 28px;
    align-items: center;
    padding: 42px;
    border-radius: 36px;
    background: radial-gradient(circle at top left, #fff4dc, #fff 48%, #f5fbf5);
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
}
.eyebrow {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    padding: 7px 12px;
    border-radius: 999px;
    background: #fff2e7;
    color: var(--brand-dark);
    font-weight: 800;
    margin-bottom: 14px;
}
h1, h2, h3, h4, h5, h6 { line-height: 1.22; margin: 0 0 14px; }
h1 { font-size: clamp(2.1rem, 5vw, 4.4rem); letter-spacing: -0.05em; }
h2 { font-size: clamp(1.65rem, 3vw, 2.5rem); letter-spacing: -0.03em; }
h3 { font-size: 1.25rem; }
.lead { font-size: 1.12rem; color: #475a51; margin-bottom: 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn.secondary { background: #fff; color: var(--brand-dark); box-shadow: inset 0 0 0 1px var(--line); }
.hero-note { color: var(--muted); font-size: 0.94rem; margin-top: 18px; }
.hero-media figure, .feature-media figure { margin: 0; }
.hero-media img, .feature-media img {
    border-radius: 30px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.6);
}
.image-description { font-size: 0.84rem; color: var(--muted); margin: 9px 4px 0; }
.section {
    margin-top: 54px;
}
.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}
.section-head p { color: var(--muted); max-width: 650px; margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 22px;
    box-shadow: 0 12px 30px rgba(77, 61, 45, 0.08);
}
.card p { color: var(--muted); margin-bottom: 0; }
.badge, .tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 5px 10px;
    background: #f1f8ef;
    color: var(--green);
    font-weight: 800;
    font-size: 0.84rem;
    margin-bottom: 12px;
}
.video-card {
    overflow: hidden;
    padding: 0;
    position: relative;
}
.video-poster { position: relative; background: #fff; }
.video-poster video, .video-poster img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: 28px 28px 0 0;
}
.play-overlay {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: rgba(31,39,35,0.06);
    transition: background 0.22s ease;
}
.play-overlay span {
    width: 66px;
    height: 66px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.92);
    color: var(--brand-dark);
    font-weight: 900;
    transform: scale(0.94);
    opacity: 0;
    transition: all 0.22s ease;
}
.video-card:hover .play-overlay, .video-card.is-hover .play-overlay { background: rgba(31,39,35,0.25); }
.video-card:hover .play-overlay span, .video-card.is-hover .play-overlay span { opacity: 1; transform: scale(1); }
.video-card-body { padding: 20px; }
.metric { color: var(--brand-dark); font-weight: 800; font-size: 0.9rem; margin-top: 12px; }
.step-list { counter-reset: step; display: grid; gap: 14px; }
.step-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    align-items: start;
}
.step-number {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: #fff2e7;
    color: var(--brand-dark);
    font-weight: 900;
    display: grid;
    place-items: center;
}
.update-list, .faq-list, .review-list { display: grid; gap: 14px; }
.update-item, .faq-item, .review-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 18px;
}
.update-item strong { color: var(--brand-dark); }
.faq-item summary {
    cursor: pointer;
    font-weight: 900;
    color: var(--ink);
}
.faq-item p { margin-bottom: 0; color: var(--muted); }
.review-item blockquote { margin: 0; color: #405148; }
.review-item cite { display: block; margin-top: 12px; color: var(--muted); font-style: normal; font-weight: 800; }
.cta-band {
    background: linear-gradient(135deg, var(--brand), #f2aa6a);
    color: #fff;
    border-radius: 32px;
    padding: 32px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
}
.cta-band p { margin: 0; color: rgba(255,255,255,0.88); }
.cta-band .btn { background: #fff; color: var(--brand-dark); }
.page-hero {
    padding: 34px;
    border-radius: 34px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 26px;
    align-items: center;
}
.page-hero img { border-radius: 28px; }
.article-block { max-width: 860px; }
.article-block p { color: var(--muted); }
.kv-list { display: grid; gap: 12px; }
.kv-list li {
    list-style: none;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 14px 16px;
}
.contact-form {
    display: grid;
    gap: 12px;
}
.contact-form input, .contact-form textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px 14px;
    font: inherit;
}
.contact-form textarea { min-height: 130px; resize: vertical; }
.site-footer {
    background: #2c332f;
    color: #f9f4ed;
    padding: 44px 0 26px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr 1fr;
    gap: 28px;
}
.site-footer p, .site-footer li { color: rgba(249,244,237,0.78); }
.site-footer h2 { font-size: 1.1rem; color: #fff; }
.footer-links { padding: 0; margin: 0; list-style: none; columns: 2; }
.footer-links a { color: rgba(249,244,237,0.82); }
.footer-logo { color: #fff; margin-bottom: 12px; }
.copyright {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 18px;
    margin-top: 28px;
    color: rgba(249,244,237,0.7);
    font-size: 0.92rem;
}
@media (max-width: 920px) {
    .hero, .page-hero, .cta-band { grid-template-columns: 1fr; }
    .grid-4, .grid-3, .grid-2, .footer-grid { grid-template-columns: 1fr 1fr; }
    .main-menu { display: none; width: 100%; }
    .main-menu.open { display: flex; }
    .nav-wrap { flex-wrap: wrap; padding: 10px 0; }
    .nav-toggle { display: inline-flex; border: 1px solid var(--line); background: #fff; border-radius: 14px; padding: 10px 14px; font-weight: 800; }
}
@media (max-width: 640px) {
    .nav-wrap, .search-panel, main, .footer-grid, .copyright { width: min(100% - 22px, 1160px); }
    .hero, .page-hero { padding: 22px; border-radius: 26px; }
    .grid-4, .grid-3, .grid-2, .footer-grid { grid-template-columns: 1fr; }
    .search-row { flex-direction: column; }
    .section-head { display: block; }
    .hero-actions { flex-direction: column; }
    .btn, .search-row button { width: 100%; text-align: center; }
}