/* epson-l-3100.ru — тема "четыре чернила": палитра взята из самих ёмкостей СНПЧ K/C/M/Y */

:root {
    --paper: #F1F5F1;
    --paper-raised: #FFFFFF;
    --ink: #16211D;
    --ink-soft: #4E5C55;
    --teal-deep: #0E4F4A;
    --teal: #147D74;
    --magenta: #D6416F;
    --yellow: #E8A93A;
    --cyan: #2AAFC4;
    --go: #1F8A5F;
    --go-dark: #146A48;
    --line: #DCE5DE;
    --line-strong: #C3D0C7;
    --radius: 12px;
    --serif: ui-serif, Georgia, "Times New Roman", Times, serif;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --mono: ui-monospace, "SF Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--sans);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
a { color: var(--teal-deep); text-decoration-color: var(--line-strong); }
a:hover { color: var(--magenta); }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }
img, picture { max-width: 100%; height: auto; display: block; }

/* ===== Ink bar — фирменная полоса из 4 цветов, используется как разделитель ===== */
.ink-bar {
    height: 5px;
    display: flex;
}
.ink-bar span { flex: 1; }
.ink-bar .k { background: var(--ink); }
.ink-bar .c { background: var(--cyan); }
.ink-bar .m { background: var(--magenta); }
.ink-bar .y { background: var(--yellow); }

/* ===== Header ===== */
.site-header {
    background: var(--paper-raised);
    position: sticky;
    top: 0;
    z-index: 50;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--ink);
}
.logo:hover { color: var(--ink); text-decoration: none; }
.logo .dot { display: inline-flex; gap: 3px; }
.logo .dot i { width: 8px; height: 8px; border-radius: 50%; display: block; }
.logo .dot i:nth-child(1) { background: var(--ink); }
.logo .dot i:nth-child(2) { background: var(--cyan); }
.logo .dot i:nth-child(3) { background: var(--magenta); }
.logo .dot i:nth-child(4) { background: var(--yellow); }
.logo small { color: var(--ink-soft); font-weight: 400; font-family: var(--sans); font-size: .75rem; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; }

.main-nav > ul {
    list-style: none;
    display: flex;
    gap: 2px;
    margin: 0;
    padding: 0;
    align-items: center;
}
.main-nav > ul > li > a {
    color: var(--ink-soft);
    padding: 9px 12px;
    display: inline-block;
    font-size: .92rem;
    font-weight: 600;
    border-radius: 8px;
}
.main-nav > ul > li > a:hover { background: var(--paper); color: var(--ink); text-decoration: none; }
.dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: 0 14px 28px rgba(14,79,74,.14);
    padding: 6px;
    min-width: 210px;
    list-style: none;
    margin: 8px 0 0;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu { display: block; }
.dropdown-menu li a {
    color: var(--ink);
    display: block;
    padding: 9px 10px;
    border-radius: 6px;
    font-size: .92rem;
}
.dropdown-menu li a:hover { background: var(--paper); text-decoration: none; }

/* ===== Layout ===== */
.main-content { padding: 40px 0 64px; min-height: 55vh; }

h1 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: clamp(1.7rem, 3.2vw, 2.4rem);
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 6px 0 22px;
    color: var(--teal-deep);
}
h2 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.4rem;
    margin: 36px 0 14px;
    color: var(--teal-deep);
}
p { margin: 0 0 14px; }
.lede { font-size: 1.08rem; color: var(--ink-soft); max-width: 660px; }
.muted { color: var(--ink-soft); font-size: .92rem; }
.article ul:not([class]), .article ol:not([class]) { padding-left: 22px; }
.article li { margin-bottom: 6px; }

/* ===== Crumbs ===== */
.crumbs { margin: 0 0 8px; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; font-size: .84rem; color: var(--ink-soft); }
.crumbs li:not(:last-child)::after { content: "/"; margin-left: 6px; color: var(--line-strong); }
.crumbs [aria-current] { color: var(--ink); }

/* ===== Buttons ===== */
.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--go);
    color: #fff;
    font-weight: 700;
    padding: 16px 26px;
    border-radius: 10px;
    font-size: 1.05rem;
    box-shadow: 0 8px 20px rgba(31,138,95,.25);
}
.btn-download:hover { background: var(--go-dark); color: #fff; text-decoration: none; }
.download-block { margin: 20px 0 10px; }

.os-grid { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.os-chip {
    padding: 11px 18px;
    background: var(--paper-raised);
    border: 1.5px solid var(--line);
    border-radius: 999px;
    font-weight: 600;
    color: var(--ink);
}
.os-chip:hover { border-color: var(--teal); text-decoration: none; color: var(--teal-deep); }

/* ===== Spec block ===== */
.spec-table {
    width: 100%;
    max-width: 560px;
    border-collapse: collapse;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    font-size: .93rem;
    margin: 16px 0 20px;
}
.spec-table th, .spec-table td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.spec-table th { color: var(--ink-soft); font-weight: 600; white-space: nowrap; width: 42%; }

/* ===== Install steps with real photos ===== */
.photo-steps { display: grid; gap: 22px; margin: 20px 0; }
.photo-step {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 20px;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    align-items: center;
}
.photo-step .shot { border-radius: 8px; overflow: hidden; border: 1px solid var(--line); }
.photo-step .shot img { width: 100%; height: auto; }
.photo-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--teal-deep);
    color: #fff;
    font-weight: 700;
    font-size: .82rem;
    margin-right: 8px;
}
.photo-step h3 { font-family: var(--serif); margin: 0 0 8px; color: var(--ink); font-size: 1.08rem; }
.photo-step p:last-child { margin-bottom: 0; }
.photo-caption { font-size: .84rem; color: var(--ink-soft); margin-top: 6px; }

/* ===== Notices ===== */
.notice {
    border-radius: var(--radius);
    padding: 16px 18px;
    margin: 18px 0;
    border-left: 4px solid var(--teal);
    background: #EAF3F1;
}
.notice.warn { border-left-color: var(--magenta); background: #FBEAF0; }
.notice p:last-child { margin-bottom: 0; }

/* ===== FAQ ===== */
.faq details {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 14px 16px;
    margin: 0 0 10px;
}
.faq summary { cursor: pointer; font-weight: 700; color: var(--teal-deep); }
.faq details[open] summary { margin-bottom: 8px; }

/* ===== Cards / lists ===== */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin-top: 16px; }
.card {
    display: block;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px 18px;
    color: var(--ink);
}
.card:hover { border-color: var(--teal); text-decoration: none; }
.card b { display: block; font-family: var(--serif); margin-bottom: 4px; }
.card span { display: block; font-size: .87rem; color: var(--ink-soft); }

ul.models-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px 14px; }
ul.models-grid li a { font-size: .93rem; }
.series-group h2 .count { color: var(--ink-soft); font-weight: 400; font-size: 1rem; font-family: var(--sans); }

.catalog-search { margin: 6px 0 24px; }
.catalog-search input {
    width: 100%; max-width: 420px;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1.5px solid var(--line);
    border-radius: 8px;
    background: var(--paper-raised);
}
.catalog-search input:focus { border-color: var(--teal); outline: none; }

/* ===== Footer ===== */
.site-footer { background: var(--teal-deep); color: rgba(255,255,255,.82); padding: 34px 0; margin-top: 44px; font-size: .9rem; }
.footer-inner { display: grid; gap: 14px; }
.site-footer a { color: #fff; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 14px; }
.copyright { color: rgba(255,255,255,.5); margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 780px) {
    .nav-toggle { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        left: 0; right: 0; top: 68px;
        background: var(--paper-raised);
        border-top: 1px solid var(--line);
        padding: 8px 16px 16px;
    }
    .main-nav.open { display: block; }
    .main-nav > ul { flex-direction: column; align-items: stretch; }
    .dropdown-menu { position: static; box-shadow: none; border: none; background: var(--paper); }
    .photo-step { grid-template-columns: 1fr; }
    h1 { font-size: 1.5rem; }
}