:root {
    --ink: #2b2a28;
    --paper: #f7f4ef;
    --wall: #fbf9f5;
    --mute: #7a766e;
    --line: #e4dfd5;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "Georgia", "Palatino Linotype", "Songti SC", "STSong", serif;
    color: var(--ink);
    background: var(--wall);
    line-height: 1.8;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1040px, calc(100% - 48px)); margin: 0 auto; }

.gallery-bar {
    text-align: center;
    padding: 14px 20px;
    letter-spacing: 0.32em;
    font-size: 11px;
    color: var(--mute);
    border-bottom: 1px solid var(--line);
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(251, 249, 245, 0.94);
}
.nav-wrap {
    display: flex;
    align-items: center;
    gap: 20px;
    min-height: 76px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
}
.logo-mark {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border: 1px solid var(--ink);
    font-size: 12px;
}
.nav-toggle { display: none; }
.nav-burger {
    display: none;
    margin-left: auto;
    padding: 6px 10px;
    border: 1px solid var(--ink);
    font-size: 13px;
}
.nav-menu { display: flex; gap: 20px; flex: 1; font-size: 14px; }
.nav-menu a { color: var(--mute); }
.nav-menu a.active, .nav-menu a:hover { color: var(--ink); }
.nav-actions { display: flex; gap: 10px; }

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--ink);
    letter-spacing: 0.06em;
}
.btn:hover { background: var(--ink); color: var(--wall); }
.btn-lg { padding: 14px 28px; }
.btn-ghost { color: var(--mute); border-color: var(--line); }

.hero { padding: 88px 0 96px; }
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 0.85fr;
    gap: 72px;
    align-items: center;
}
.tag {
    display: inline-block;
    margin-bottom: 18px;
    letter-spacing: 0.22em;
    font-size: 11px;
    color: var(--mute);
}
.hero-kicker { color: var(--mute); margin-bottom: 12px; font-size: 15px; }
.hero h1 {
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.3;
    margin-bottom: 20px;
    font-weight: 500;
}
.hero p { color: var(--mute); max-width: 34em; }
.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 22px;
    color: var(--mute);
    font-size: 13px;
    letter-spacing: 0.06em;
}
.hero-visual img {
    width: 100%;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
}

.data-band { padding: 8px 0 48px; }
.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    text-align: center;
}
.data-grid > div { padding: 12px; }
.data-num { font-size: 26px; font-weight: 500; }
.data-label { color: var(--mute); font-size: 12px; letter-spacing: 0.16em; }

.section { padding: 72px 0; }
.section.alt { background: var(--paper); }
.section-head { margin-bottom: 36px; max-width: 28em; }
.section-head h2 { font-size: 28px; margin-bottom: 10px; font-weight: 500; }
.section-head p { color: var(--mute); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.card { padding: 0; background: transparent; }
.card h3 { margin: 12px 0 8px; font-size: 19px; font-weight: 500; }
.card p { color: var(--mute); font-size: 15px; }
.card.main { padding-top: 8px; border-top: 1px solid var(--ink); }
.icon {
    width: 24px;
    height: 1px;
    background: var(--ink);
}
.solution-card img {
    height: 168px;
    width: 100%;
    object-fit: cover;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
}
.price { margin-bottom: 8px; letter-spacing: 0.08em; }

.cta {
    padding: 88px 0;
    text-align: center;
}
.cta h2 { font-size: 30px; margin-bottom: 12px; font-weight: 500; }
.cta p { color: var(--mute); margin-bottom: 24px; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

.site-footer {
    padding: 48px 0 24px;
    border-top: 1px solid var(--line);
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { margin-bottom: 12px; font-weight: 500; letter-spacing: 0.08em; }
.footer-grid a, .footer-grid p { display: block; color: var(--mute); margin-bottom: 8px; font-size: 14px; }
.footer-bottom {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    color: var(--mute);
    font-size: 12px;
    letter-spacing: 0.06em;
}

.page-hero { padding: 72px 0 20px; }
.page-hero h1 { font-size: 34px; margin: 10px 0 14px; font-weight: 500; }
.page-hero p { color: var(--mute); max-width: 38em; }
.dl-list, .help-list { display: grid; gap: 28px; }
.dl-item, .help-box { padding-top: 18px; border-top: 1px solid var(--line); }
.dl-item { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.dl-item.main { border-top-color: var(--ink); }
.specs { display: flex; gap: 16px; color: var(--mute); font-size: 13px; margin: 8px 0; }
.shot { margin-top: 36px; }
.shot img { width: 100%; padding: 14px; background: #fff; border: 1px solid var(--line); }

@media (max-width: 900px) {
    .nav-burger { display: inline-block; }
    .nav-menu, .nav-actions { display: none; }
    .nav-toggle:checked ~ .nav-menu,
    .nav-toggle:checked ~ .nav-actions {
        display: flex;
        flex-direction: column;
        width: 100%;
        padding-bottom: 16px;
    }
    .nav-wrap { flex-wrap: wrap; }
    .hero-grid, .grid-3, .data-grid, .footer-grid, .dl-item {
        grid-template-columns: 1fr;
        display: grid;
        gap: 28px;
    }
}