/* ========================================================================== ByteFit landing — "Fresh Lab" design system (ground-up, 2026-06). Scope: index.html (RU) + en/index.html (EN) ONLY. Legal/support pages keep styles.css. Self-hosted Manrope (UI + display) + Space Grotesk (numerals, eyebrows — the "data voice"). All motion honors prefers-reduced-motion. JS contract preserved: .reveal/.in (+ --d), .site-header.scrolled, .faq-item/.faq-a/.open, .btn/.ripple, .is-hidden-by-flag, .cookie-bar. ========================================================================== */ /* ---------- tokens ---------- */ :root { /* surfaces */ --bg: #f7f9f3; --bg-tint: #eef4ea; --surface: #ffffff; --surface-2: #f3f6ef; /* ink */ --ink: #0b1a11; --ink-2: #33453a; --muted: #55645c; --line: rgba(11, 26, 17, 0.09); --line-2: rgba(11, 26, 17, 0.06); /* brand green ramp */ --brand: #15a85a; /* vivid grass */ --brand-strong: #0c7d41; /* AA-safe (>=4.5:1) on white for text/icons */ --brand-deep: #0a4a27; /* forest */ --brand-ink: #052a17; /* deepest, for dark sections */ --lime: #8fe06a; /* fresh highlight */ --lime-soft: #d8f3cb; --accent-soft: #e4f4e8; /* soft green tint surface */ --accent-ring: rgba(21, 168, 90, 0.16); /* macro accents — echo the real app (protein/fat/carbs) */ --m-protein: #6c5ce7; --m-fat: #ec4899; --m-carb: #f59e0b; /* radii */ --r-xs: 10px; --r-sm: 14px; --r: 20px; --r-lg: 28px; --r-xl: 40px; --r-pill: 999px; /* shadow */ --shadow-xs: 0 1px 2px rgba(11, 26, 17, 0.05); --shadow-sm: 0 4px 16px -6px rgba(11, 26, 17, 0.12); --shadow: 0 18px 44px -22px rgba(11, 26, 17, 0.30); --shadow-lg: 0 40px 90px -40px rgba(11, 26, 17, 0.45); --shadow-float: 0 30px 70px -30px rgba(10, 74, 39, 0.40); --shadow-brand: 0 14px 30px -12px rgba(15, 138, 72, 0.50); /* type */ --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; --font-display: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; --font-mono: "Space Grotesk", "Manrope", ui-monospace, monospace; --fs-hero: clamp(2.3rem, 1.3rem + 3.2vw, 4.55rem); --fs-h2: clamp(1.95rem, 1.2rem + 2.6vw, 3.4rem); --fs-h3: clamp(1.18rem, 1.02rem + 0.5vw, 1.45rem); --fs-lede: clamp(1.06rem, 0.98rem + 0.45vw, 1.32rem); --fs-eyebrow: 0.78rem; /* spacing */ --gut: clamp(1.1rem, 0.6rem + 2vw, 2rem); --space-section: clamp(4.5rem, 3rem + 6vw, 9rem); --maxw: 1180px; --maxw-wide: 1280px; --maxw-narrow: 760px; /* motion */ --dur-fast: 160ms; --dur: 320ms; --dur-slow: 620ms; --ease: cubic-bezier(0.22, 1, 0.36, 1); --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1); } /* ---------- reset ---------- */ *, *::before, *::after { box-sizing: border-box; } * { margin: 0; } html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; } /* Keep keyboard-focused elements clear of the fixed cookie card (2.4.11). */ html:has(.cookie-bar) { scroll-padding-bottom: 7rem; } .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } } body { font-family: var(--font-body); background: var(--bg); color: var(--ink); font-size: 1.0625rem; line-height: 1.6; font-weight: 450; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; /* `clip` (not `hidden`) prevents a horizontal scrollbar WITHOUT making a scroll container. */ overflow-x: clip; } img, svg, video { display: block; max-width: 100%; } a { color: inherit; text-decoration: none; } button { font: inherit; color: inherit; cursor: pointer; } :focus-visible { outline: 2.5px solid var(--brand-deep); outline-offset: 3px; border-radius: 6px; } h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.04; letter-spacing: -0.025em; font-weight: 800; color: var(--ink); text-wrap: balance; } /* ---------- layout ---------- */ .container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); } .container-wide { width: 100%; max-width: var(--maxw-wide); margin-inline: auto; padding-inline: var(--gut); } .container-narrow { width: 100%; max-width: var(--maxw-narrow); margin-inline: auto; padding-inline: var(--gut); } main > section { padding-block: var(--space-section); position: relative; } .is-hidden-by-flag { display: none !important; } /* ---------- type helpers ---------- */ .eyebrow { display: inline-flex; align-items: center; gap: 0.5em; font-family: var(--font-mono); font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--brand-deep); padding: 0.45em 0.85em; background: var(--accent-soft); border: 1px solid rgba(15, 138, 72, 0.16); border-radius: var(--r-pill); } .eyebrow svg { width: 1em; height: 1em; } .hl { color: var(--brand-strong); } .lede { font-size: var(--fs-lede); color: var(--ink-2); line-height: 1.55; max-width: 34ch; } .num { font-family: var(--font-mono); font-feature-settings: "tnum" 1; letter-spacing: -0.01em; } .section-head { max-width: 56ch; margin-inline: auto; text-align: center; display: grid; gap: 1rem; margin-bottom: clamp(2.2rem, 1.5rem + 2vw, 3.6rem); justify-items: center; } .section-head.start { margin-inline: 0; text-align: left; justify-items: start; } .section-head h2 { font-size: var(--fs-h2); } .section-head p { color: var(--muted); font-size: var(--fs-lede); max-width: 48ch; } /* ---------- buttons ---------- */ .btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; justify-content: center; gap: 0.55em; padding: 0.85em 1.4em; border-radius: var(--r-pill); font-weight: 700; font-size: 1rem; line-height: 1; border: 1px solid transparent; transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease); white-space: nowrap; } .btn svg { width: 1.15em; height: 1.15em; flex: none; } .btn-lg { padding: 1.05em 1.7em; font-size: 1.06rem; } .btn:active { transform: translateY(1px) scale(0.99); } .btn-primary { background: var(--brand-strong); color: #fff; box-shadow: var(--shadow-brand); } .btn-primary:hover { background: var(--brand-deep); transform: translateY(-2px); box-shadow: 0 20px 38px -14px rgba(15, 138, 72, 0.6); } .btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line); box-shadow: var(--shadow-xs); } .btn-secondary:hover { border-color: rgba(11, 26, 17, 0.2); transform: translateY(-2px); box-shadow: var(--shadow-sm); } .btn-on-dark { background: var(--lime); color: var(--brand-ink); } .btn-on-dark:hover { background: #a3e87f; transform: translateY(-2px); } .btn-ghost-dark { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.28); } .btn-ghost-dark:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-2px); } .btn-row { display: flex; flex-wrap: wrap; gap: 0.8rem; } .btn-row-secondary { margin-top: 0.5rem; } /* ripple */ .ripple { position: absolute; border-radius: 50%; transform: scale(0); background: rgba(255, 255, 255, 0.4); pointer-events: none; animation: ripple 0.6s var(--ease-out-expo); } .btn-secondary .ripple { background: rgba(11, 26, 17, 0.1); } @keyframes ripple { to { transform: scale(2.4); opacity: 0; } } /* ---------- topbar ---------- */ .topbar { background: var(--brand-deep); color: #eafff1; font-size: 0.85rem; font-weight: 500; } .topbar .container { display: flex; align-items: center; justify-content: center; gap: 0.6em; padding-block: 0.5rem; text-align: center; } .topbar strong { font-weight: 700; color: #fff; } .topbar .spark { display: inline-grid; place-items: center; width: 1.4em; height: 1.4em; } .topbar .spark svg { width: 1.1em; height: 1.1em; color: var(--lime); } /* ---------- header ---------- */ .site-header { position: sticky; top: 0; z-index: 50; transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease); border-bottom: 1px solid transparent; } /* Solid (not backdrop-blur) so the sticky header doesn't repaint a blurred region every scroll frame — keeps native scrolling smooth. */ .site-header.scrolled { background: rgba(248, 250, 244, 0.97); border-bottom-color: var(--line-2); box-shadow: 0 8px 30px -24px rgba(11, 26, 17, 0.5); } .site-header .nav { display: flex; align-items: center; gap: 1.5rem; padding-block: 0.68rem; } .brand { display: inline-flex; align-items: center; gap: 0.55em; font-weight: 800; font-size: 1.18rem; letter-spacing: -0.02em; } .brand .mark { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--accent-soft); overflow: hidden; box-shadow: inset 0 0 0 1px rgba(15, 138, 72, 0.14); } .brand .mark img { width: 24px; height: 24px; } .brand .accent { color: var(--brand-strong); } .nav-menu { display: flex; gap: 1.4rem; margin-inline: auto; } .nav-menu a { font-size: 0.96rem; font-weight: 600; color: var(--ink-2); position: relative; padding-block: 0.3em; } .nav-menu a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; border-radius: 2px; background: var(--brand-strong); transition: width var(--dur) var(--ease); } .nav-menu a:hover { color: var(--ink); } .nav-menu a:hover::after { width: 100%; } .nav-right { display: flex; align-items: center; gap: 0.9rem; } .lang-switch { font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.06em; color: var(--ink-2); border: 1px solid var(--line); border-radius: var(--r-pill); padding: 0.62em 0.85em; transition: border-color var(--dur), color var(--dur); } .lang-switch:hover { color: var(--ink); border-color: rgba(11, 26, 17, 0.22); } /* ---------- hero ---------- */ .hero { padding-block: clamp(1.1rem, 0.5rem + 1.6vw, 2.4rem); overflow: hidden; } .hero-grid { display: grid; grid-template-columns: 1.04fr 0.96fr; gap: clamp(1.5rem, 0.5rem + 3.5vw, 4rem); align-items: center; } .hero-copy { display: grid; gap: clamp(0.85rem, 0.5rem + 0.8vw, 1.35rem); justify-items: start; } .hero h1 { font-size: var(--fs-hero); } .hero .lede { max-width: 40ch; } .hero-trust { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; color: var(--muted); font-size: 0.9rem; font-weight: 600; margin-top: 0.3rem; } .hero-trust span { display: inline-flex; align-items: center; gap: 0.5em; } .hero-trust svg { width: 1.1em; height: 1.1em; color: var(--brand-strong); } .free-flag { display: inline-flex; align-items: center; gap: 0.5em; font-weight: 700; color: var(--brand-deep); font-size: 0.95rem; } .free-flag svg { width: 1.1em; height: 1.1em; } /* hero media stage: food visual + floating phone + cards */ .hero-media { position: relative; aspect-ratio: 4 / 4.2; } /* On laptops/desktops the whole hero (nav + copy + visual) fits above the fold. */ @media (min-width: 981px) { .hero { min-height: calc(100svh - 112px); display: grid; align-items: center; } .hero-media { height: min(60svh, 600px); width: auto; max-width: 100%; justify-self: end; } } /* z-index 0 (not auto) keeps the b-roll explicitly below the phone (3) and the float cards (4) in this stacking context, whatever the source order becomes. On Android the