/* =================================================
   KAIRION — Precision Biology Applied
   Design System · Premium biotech aesthetic
   ================================================= */

:root {
    --bg: #F5F1EA;
    --bg-alt: #EFE9DE;
    --bg-dark: #0E0F0D;
    --bg-dark-alt: #171815;
    --ink: #14150F;
    --ink-soft: #4B4C46;
    --ink-mute: #8C8D85;
    --line: rgba(20, 21, 15, 0.12);
    --line-strong: rgba(20, 21, 15, 0.28);
    --line-light: rgba(245, 241, 234, 0.18);
    --accent: #7E8B5B;
    --accent-dark: #5C6842;
    --gold: #B39A6B;
    --white: #FFFFFF;
    --wa: #25D366;
    --wa-dark: #128C7E;

    --serif: 'Fraunces', 'Cormorant Garamond', Georgia, serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --container: 1280px;
    --gutter: clamp(20px, 4vw, 48px);
    --radius: 4px;
    --radius-lg: 12px;
    --transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 400;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
input, select, textarea { font-family: inherit; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    width: 100%;
}

/* =========== TYPOGRAPHY =========== */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.05; letter-spacing: -0.02em; }
em { font-style: italic; font-family: var(--serif); font-weight: 300; }

.eyebrow {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ink-soft);
    font-weight: 500;
    margin-bottom: 24px;
}

.section-tag {
    display: inline-block;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
    margin-bottom: 20px;
    padding-left: 24px;
    position: relative;
}
.section-tag::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    width: 16px; height: 1px;
    background: var(--ink-mute);
}
.section-tag.light { color: rgba(245, 241, 234, 0.6); }
.section-tag.light::before { background: rgba(245, 241, 234, 0.6); }

.section-title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    color: var(--ink);
    max-width: 800px;
}
.section-title.light { color: var(--bg); }

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    letter-spacing: 0.05em;
    color: var(--ink);
    padding-bottom: 4px;
    border-bottom: 1px solid var(--ink);
    transition: gap var(--transition);
}
.text-link:hover { gap: 16px; }
.arrow { transition: transform var(--transition); display: inline-block; }
.text-link:hover .arrow { transform: translateX(4px); }

/* =========== BUTTONS =========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 28px;
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 500;
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    border: 1px solid transparent;
}
.btn.large { padding: 20px 40px; font-size: 14px; }
.btn-primary {
    background: var(--ink);
    color: var(--bg);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 14px 32px rgba(20, 21, 15, 0.2); }
.btn-outline {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--bg); }
.btn-ghost {
    background: transparent;
    color: var(--ink);
    padding: 16px 8px;
}
.btn-ghost:hover .arrow { transform: translateX(4px); }
.btn-light {
    background: var(--bg);
    color: var(--ink);
}
.btn-light:hover { background: var(--gold); color: var(--bg-dark); transform: translateY(-2px); }

/* =========== HEADER =========== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 20px 0;
    background: rgba(245, 241, 234, 0);
    transition: all var(--transition);
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    background: rgba(245, 241, 234, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 14px 0;
    border-bottom-color: var(--line);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--serif);
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--ink);
    font-weight: 500;
}
.brand-mark { font-size: 20px; color: var(--accent); }
.brand-name { font-weight: 500; letter-spacing: 0.14em; }
.brand.light { color: var(--bg); }
.brand.light .brand-mark { color: var(--gold); }

.main-nav {
    display: flex;
    gap: 36px;
    align-items: center;
}
.nav-link {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--ink-soft);
    text-transform: uppercase;
    font-weight: 500;
    position: relative;
    padding: 6px 0;
    transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 1px;
    background: var(--accent);
}
.header-cta { padding: 12px 22px; font-size: 12px; }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.menu-toggle span {
    width: 24px; height: 1.5px;
    background: var(--ink);
    transition: all var(--transition);
}

/* =========== HERO =========== */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 140px 0 80px;
    overflow: hidden;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(126, 139, 91, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 80%, rgba(179, 154, 107, 0.06) 0%, transparent 55%),
        var(--bg);
}
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.4;
    pointer-events: none;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    min-height: calc(100vh - 220px);
    position: relative;
    z-index: 2;
}
.hero-title {
    font-size: clamp(3rem, 8vw, 6.8rem);
    margin-bottom: 32px;
    line-height: 0.95;
}
.hero-subtitle {
    font-size: 18px;
    color: var(--ink-soft);
    max-width: 520px;
    margin-bottom: 40px;
    line-height: 1.6;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.hero-visual {
    position: relative;
    height: 620px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.vial-showcase {
    position: relative;
    width: 340px;
    height: 560px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.vial-glow {
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(126, 139, 91, 0.35) 0%, transparent 65%);
    filter: blur(60px);
    animation: pulse 6s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.15); opacity: 0.8; }
}

/* ---- VIAL ---- */
.vial {
    position: relative;
    width: 180px;
    z-index: 2;
    animation: float 5s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}
.vial.big { width: 240px; animation: none; }

.vial-cap {
    width: 96px;
    height: 40px;
    margin: 0 auto;
    background: linear-gradient(180deg, #2d2f28 0%, #14150F 100%);
    border-radius: 6px 6px 4px 4px;
    box-shadow: inset 0 -6px 8px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.2);
    position: relative;
}
.vial-cap::before {
    content: '';
    position: absolute;
    left: 8px; right: 8px;
    top: 6px; height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
}
.vial-neck {
    width: 74px;
    height: 20px;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(20, 21, 15, 0.15) 0%, rgba(20, 21, 15, 0.05) 100%);
    border-left: 1px solid rgba(20, 21, 15, 0.15);
    border-right: 1px solid rgba(20, 21, 15, 0.15);
}
.vial-body {
    position: relative;
    width: 180px;
    height: 260px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(240, 234, 220, 0.55) 100%);
    border-radius: 10px 10px 18px 18px;
    box-shadow:
        inset 4px 0 8px rgba(255, 255, 255, 0.6),
        inset -4px 0 8px rgba(20, 21, 15, 0.08),
        0 20px 40px rgba(20, 21, 15, 0.12);
    overflow: hidden;
    border: 1px solid rgba(20, 21, 15, 0.08);
}
.vial.big .vial-body { width: 240px; height: 340px; }
.vial.big .vial-cap { width: 130px; height: 54px; }
.vial.big .vial-neck { width: 100px; height: 26px; }

.vial-liquid {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 68%;
    background: linear-gradient(180deg,
        rgba(126, 139, 91, 0.15) 0%,
        rgba(126, 139, 91, 0.35) 100%);
    border-radius: 0 0 18px 18px;
}
.vial-liquid::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: rgba(126, 139, 91, 0.6);
    box-shadow: 0 0 12px rgba(126, 139, 91, 0.4);
}
.vial-label {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    z-index: 2;
    padding: 20px 12px;
    width: 90%;
    background: rgba(245, 241, 234, 0.88);
    border-top: 1px solid rgba(20, 21, 15, 0.1);
    border-bottom: 1px solid rgba(20, 21, 15, 0.1);
}
.vial-brand {
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.28em;
    color: var(--ink);
    font-weight: 500;
}
.vial-product {
    font-family: var(--serif);
    font-size: 22px;
    letter-spacing: 0.06em;
    color: var(--ink);
    font-weight: 500;
}
.vial.big .vial-product { font-size: 30px; }
.vial-dose {
    font-family: var(--sans);
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--ink-soft);
    text-transform: uppercase;
}
.vial-system {
    font-family: var(--sans);
    font-size: 9px;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    margin-top: 4px;
    padding-top: 6px;
    border-top: 1px solid rgba(126, 139, 91, 0.3);
    width: 60%;
    text-align: center;
}

.floating-tag {
    position: absolute;
    background: rgba(245, 241, 234, 0.95);
    border: 1px solid var(--line);
    padding: 8px 14px;
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-soft);
    font-weight: 500;
    border-radius: 999px;
    backdrop-filter: blur(10px);
    z-index: 3;
    animation: floatTag 6s ease-in-out infinite;
}
.tag-1 { top: 10%; left: -20px; animation-delay: 0s; }
.tag-2 { top: 45%; right: -30px; animation-delay: 1s; }
.tag-3 { bottom: 12%; left: -10px; animation-delay: 2s; }
@keyframes floatTag {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ink-mute);
    z-index: 3;
}
.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--ink-mute) 0%, transparent 100%);
    animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
    0%, 100% { transform: scaleY(0.6); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
}

/* =========== SECTIONS =========== */
.section {
    padding: clamp(80px, 12vw, 160px) 0;
    position: relative;
}
.section-head { margin-bottom: 80px; max-width: 900px; }
.section-foot { text-align: center; margin-top: 60px; }

/* =========== PURPOSE =========== */
.purpose-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: end;
}
.purpose-body p {
    font-size: 18px;
    color: var(--ink-soft);
    margin-bottom: 24px;
    line-height: 1.7;
}

/* =========== SYSTEMS =========== */
.systems { background: var(--bg-alt); }
.systems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.system-card {
    background: var(--bg-alt);
    padding: 44px 36px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    transition: background var(--transition);
    min-height: 260px;
}
.system-card:hover { background: var(--bg); }
.system-abbr {
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.28em;
    color: var(--accent);
    font-weight: 500;
}
.system-name {
    font-size: 32px;
    color: var(--ink);
}
.system-desc {
    font-size: 14px;
    color: var(--ink-soft);
    margin-top: auto;
    max-width: 260px;
}
.system-arrow {
    position: absolute;
    right: 32px; top: 32px;
    font-size: 20px;
    color: var(--ink-mute);
    transition: all var(--transition);
}
.system-card:hover .system-arrow {
    color: var(--accent);
    transform: translate(4px, -4px);
}

/* =========== FEATURED =========== */
.featured-carousel {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.product-card {
    background: var(--bg-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
}
.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(20, 21, 15, 0.08);
}
.product-visual {
    height: 180px;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.mini-vial {
    width: 60px;
    height: 120px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(126, 139, 91, 0.25) 100%);
    border-radius: 6px 6px 12px 12px;
    border: 1px solid rgba(20, 21, 15, 0.12);
    position: relative;
    box-shadow: inset 2px 0 4px rgba(255, 255, 255, 0.6), 0 8px 16px rgba(20, 21, 15, 0.08);
}
.mini-vial::before {
    content: '';
    position: absolute;
    top: -8px; left: 50%;
    transform: translateX(-50%);
    width: 34px; height: 12px;
    background: var(--ink);
    border-radius: 3px 3px 2px 2px;
}
.mini-vial::after {
    content: '';
    position: absolute;
    top: 40%; left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 22px;
    background: rgba(245, 241, 234, 0.9);
    border-top: 1px solid rgba(20, 21, 15, 0.1);
    border-bottom: 1px solid rgba(20, 21, 15, 0.1);
}
.product-cat {
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 500;
}
.product-name {
    font-family: var(--serif);
    font-size: 24px;
    color: var(--ink);
    margin: 6px 0 4px;
}
.product-spec {
    font-size: 13px;
    color: var(--ink-mute);
}
.product-link {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
    font-weight: 500;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    transition: color var(--transition);
}
.product-card:hover .product-link { color: var(--accent-dark); }

/* =========== BLENDS =========== */
.blends {
    background: var(--bg-dark);
    color: var(--bg);
}
.blends-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.blends-copy .section-title { color: var(--bg); }
.blends-lead {
    font-size: 18px;
    color: rgba(245, 241, 234, 0.7);
    margin: 32px 0 40px;
    max-width: 480px;
    line-height: 1.7;
}
.blends-lines {
    border-top: 1px solid var(--line-light);
}
.blend-line {
    display: grid;
    grid-template-columns: 60px 1fr 20px;
    gap: 20px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line-light);
    align-items: center;
    transition: padding var(--transition);
    cursor: pointer;
}
.blend-line:hover {
    padding-left: 16px;
}
.blend-num {
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.28em;
    color: var(--gold);
}
.blend-name {
    font-family: var(--serif);
    font-size: 26px;
    font-weight: 400;
    color: var(--bg);
}
.blend-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--gold);
    justify-self: end;
    transition: transform var(--transition);
}
.blend-line:hover .blend-dot { transform: scale(1.6); }

/* =========== QUALITY =========== */
.quality-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px 40px;
}
.quality-item {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.quality-icon {
    font-size: 32px;
    color: var(--accent);
    display: inline-block;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
    width: fit-content;
}
.quality-item h3 {
    font-size: 22px;
    color: var(--ink);
}
.quality-item p {
    font-size: 15px;
    color: var(--ink-soft);
    line-height: 1.6;
}

/* =========== PROCESS =========== */
.process { background: var(--bg-alt); }
.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}
.process-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 5%; right: 5%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.process-step {
    padding: 0 20px;
    text-align: left;
    position: relative;
}
.step-number {
    display: block;
    font-family: var(--serif);
    font-size: 14px;
    letter-spacing: 0.2em;
    color: var(--accent);
    background: var(--bg-alt);
    padding: 20px 0;
    width: fit-content;
    padding-right: 24px;
    position: relative;
    z-index: 2;
    margin-bottom: 24px;
}
.step-name {
    font-size: 26px;
    color: var(--ink);
    margin-bottom: 12px;
}
.step-desc {
    font-size: 14px;
    color: var(--ink-soft);
    max-width: 220px;
}

/* =========== CTA BANNER =========== */
.cta-banner {
    background: var(--bg-dark);
    color: var(--bg);
    text-align: center;
    padding: clamp(100px, 15vw, 180px) 0;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    max-width: 800px;
    max-height: 800px;
    background: radial-gradient(circle, rgba(179, 154, 107, 0.15) 0%, transparent 60%);
    filter: blur(60px);
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}
.cta-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    margin-bottom: 20px;
    color: var(--bg);
}
.cta-subtitle {
    font-size: 18px;
    color: rgba(245, 241, 234, 0.65);
    margin-bottom: 44px;
}

/* =========== FOOTER =========== */
.site-footer {
    background: var(--bg-dark);
    color: var(--bg);
    padding: 100px 0 40px;
    border-top: 1px solid var(--line-light);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr 1.3fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--line-light);
}
.footer-desc {
    font-size: 14px;
    color: rgba(245, 241, 234, 0.6);
    margin: 24px 0;
    max-width: 260px;
    line-height: 1.7;
}
.social-row {
    display: flex;
    gap: 12px;
}
.social-link {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 1px solid var(--line-light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    letter-spacing: 0.05em;
    font-weight: 500;
    color: var(--bg);
    transition: all var(--transition);
}
.social-link:hover {
    background: var(--gold);
    color: var(--bg-dark);
    border-color: var(--gold);
}
.footer-col h4 {
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 24px;
    font-weight: 500;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
    font-size: 14px;
    color: rgba(245, 241, 234, 0.7);
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--gold); }
.footer-col li {
    font-size: 14px;
    color: rgba(245, 241, 234, 0.7);
}
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    font-size: 13px;
    color: rgba(245, 241, 234, 0.5);
}
.legal-links { display: flex; gap: 32px; }
.legal-links a { transition: color var(--transition); }
.legal-links a:hover { color: var(--gold); }

/* =========== PAGE HERO =========== */
.page-hero {
    padding: 160px 0 60px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}
.page-hero.small { padding: 120px 0 20px; border-bottom: none; }
.breadcrumbs {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 40px;
}
.breadcrumbs a {
    color: var(--ink-mute);
    transition: color var(--transition);
}
.breadcrumbs a:hover { color: var(--ink); }
.breadcrumbs span { margin: 0 10px; }
.breadcrumbs .current { color: var(--ink); }
.page-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: end;
}
.page-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 0.95;
}
.page-lead {
    font-size: 18px;
    color: var(--ink-soft);
    line-height: 1.7;
    max-width: 480px;
}

/* =========== CATEGORIES BAR =========== */
.categories-bar {
    background: var(--bg-alt);
    border-bottom: 1px solid var(--line);
    padding: 20px 0;
    position: sticky;
    top: 74px;
    z-index: 40;
    backdrop-filter: blur(10px);
}
.cat-scroll {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 4px;
}
.cat-scroll::-webkit-scrollbar { display: none; }
.cat-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 13px;
    color: var(--ink-soft);
    background: var(--bg);
    transition: all var(--transition);
    white-space: nowrap;
    font-weight: 500;
}
.cat-chip span {
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--ink-mute);
    background: var(--bg-alt);
    padding: 3px 8px;
    border-radius: 4px;
}
.cat-chip:hover, .cat-chip.active {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}
.cat-chip.active span { background: rgba(245, 241, 234, 0.15); color: var(--gold); }

/* =========== CATALOG =========== */
.filters-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr) 1.4fr;
    gap: 20px;
    padding: 24px;
    background: var(--bg-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    margin-bottom: 60px;
}
.filter-group { display: flex; flex-direction: column; gap: 6px; }
.filter-group label {
    font-size: 10px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
}
.filter-group select,
.filter-group input {
    padding: 10px 14px;
    border: 1px solid var(--line);
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--ink);
    outline: none;
    transition: border-color var(--transition);
    font-family: inherit;
}
.filter-group select:focus,
.filter-group input:focus { border-color: var(--accent); }

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.catalog-card {
    background: var(--bg-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: all var(--transition);
}
.catalog-card:hover {
    background: var(--bg);
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 24px 44px rgba(20, 21, 15, 0.1);
}
.catalog-visual {
    height: 220px;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.chip {
    position: absolute;
    top: 14px; right: 14px;
    padding: 4px 10px;
    background: rgba(20, 21, 15, 0.85);
    color: var(--bg);
    font-size: 10px;
    letter-spacing: 0.24em;
    border-radius: 4px;
    font-weight: 500;
}
.catalog-info { display: flex; flex-direction: column; gap: 4px; }
.catalog-cat {
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 500;
}
.catalog-info h3 {
    font-size: 28px;
    color: var(--ink);
    margin-top: 4px;
}
.catalog-spec {
    font-size: 13px;
    color: var(--ink-mute);
}
.catalog-cta {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
    font-weight: 500;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    transition: color var(--transition);
}
.catalog-card:hover .catalog-cta { color: var(--accent-dark); }

/* =========== PRODUCT MAIN =========== */
.product-main { padding: 20px 0 100px; }
.product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.product-showcase {
    background: var(--bg-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 600px;
    position: relative;
}
.showcase-frame {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%; height: 100%;
}
.showcase-glow {
    position: absolute;
    width: 340px; height: 340px;
    background: radial-gradient(circle, rgba(126, 139, 91, 0.28) 0%, transparent 65%);
    filter: blur(50px);
    animation: pulse 6s ease-in-out infinite;
}
.showcase-tags {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
}

.product-info { padding: 20px 0; }
.product-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin: 8px 0 12px;
}
.product-specs {
    display: inline-block;
    font-size: 14px;
    color: var(--ink-mute);
    margin-bottom: 28px;
    letter-spacing: 0.05em;
}
.product-desc {
    font-size: 17px;
    color: var(--ink-soft);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 480px;
}
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 28px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    margin-bottom: 32px;
}
.feature { display: flex; flex-direction: column; gap: 6px; }
.feature-label {
    font-size: 10px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
}
.feature-value {
    font-family: var(--serif);
    font-size: 22px;
    color: var(--ink);
}

.product-actions {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.qty-selector {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--ink);
    border-radius: 999px;
    overflow: hidden;
}
.qty-btn {
    padding: 14px 18px;
    font-size: 18px;
    color: var(--ink);
    transition: all var(--transition);
}
.qty-btn:hover { background: var(--ink); color: var(--bg); }
.qty-selector input {
    width: 40px;
    text-align: center;
    border: none;
    background: transparent;
    font-size: 15px;
    font-weight: 500;
    color: var(--ink);
    outline: none;
}

/* =========== PRODUCT TABS =========== */
.product-tabs { background: var(--bg-alt); }
.tabs-nav {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 60px;
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }
.tab-btn {
    padding: 20px 28px;
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
    background: transparent;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition);
    white-space: nowrap;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active {
    color: var(--ink);
    border-bottom-color: var(--accent);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.pane-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 60px;
    align-items: start;
}
.pane-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--ink);
}
.pane-grid p {
    font-size: 17px;
    color: var(--ink-soft);
    line-height: 1.7;
}
.spec-list { display: flex; flex-direction: column; gap: 0; }
.spec-list li {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
}
.spec-list li span:first-child { color: var(--ink-mute); }
.spec-list li span:last-child { color: var(--ink); font-weight: 500; }
.ref-list { display: flex; flex-direction: column; gap: 16px; }
.ref-list li {
    padding: 16px 20px;
    background: var(--bg);
    border-left: 2px solid var(--accent);
    font-size: 14px;
    color: var(--ink-soft);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

/* =========== WHATSAPP FLOAT =========== */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 999;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    background: var(--wa);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4), 0 4px 12px rgba(20, 21, 15, 0.15);
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(20px) scale(0.9);
    pointer-events: none;
}
.whatsapp-float.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}
.whatsapp-float:hover {
    background: var(--wa-dark);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 14px 40px rgba(18, 140, 126, 0.5);
}
.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
    position: relative;
    z-index: 2;
}
.wa-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--wa);
    z-index: 1;
    animation: waPulse 2.4s ease-out infinite;
    opacity: 0;
}
@keyframes waPulse {
    0% { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(1.7); opacity: 0; }
}
.wa-tooltip {
    position: absolute;
    right: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%) translateX(6px);
    background: var(--ink);
    color: var(--bg);
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.05em;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    font-weight: 500;
}
.wa-tooltip::after {
    content: '';
    position: absolute;
    right: -6px; top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 10px; height: 10px;
    background: var(--ink);
}
.whatsapp-float:hover .wa-tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

/* =========== REVEAL ANIMATIONS =========== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* =========== RESPONSIVE =========== */
@media (max-width: 1024px) {
    .hero-inner,
    .purpose-grid,
    .blends-hero,
    .page-hero-grid,
    .product-layout,
    .pane-grid { grid-template-columns: 1fr; gap: 60px; }
    .systems-grid,
    .quality-grid { grid-template-columns: repeat(2, 1fr); }
    .featured-carousel,
    .catalog-grid,
    .process-timeline { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .process-timeline::before { display: none; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
    .filters-bar { grid-template-columns: repeat(2, 1fr); }
    .hero-visual { height: 500px; margin-top: 20px; }
    .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .main-nav {
        position: fixed;
        top: 74px; left: 0; right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 40px var(--gutter);
        gap: 20px;
        border-bottom: 1px solid var(--line);
        transform: translateY(-120%);
        transition: transform var(--transition);
    }
    .main-nav.open { transform: translateY(0); }
    .menu-toggle { display: flex; }
    .header-cta { display: none; }
    .hero { padding-top: 120px; }
    .hero-title { font-size: 3.4rem; }
    .systems-grid,
    .quality-grid,
    .featured-carousel,
    .catalog-grid,
    .process-timeline,
    .filters-bar,
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 80px 0; }
    .section-head { margin-bottom: 50px; }
    .blend-line { grid-template-columns: 50px 1fr 16px; }
    .blend-name { font-size: 20px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .whatsapp-float { width: 56px; height: 56px; bottom: 20px; right: 20px; }
    .whatsapp-float svg { width: 28px; height: 28px; }
    .product-showcase { padding: 40px 20px; min-height: 480px; }
    .feature-list { grid-template-columns: 1fr; }
    .categories-bar { top: 68px; }
    .tab-btn { padding: 16px 20px; font-size: 12px; }
}