/* Fonts */
@font-face {
    font-family: "IBM Plex Sans";
    font-style: normal;
    font-weight: 400 700;
    font-stretch: 100%;
    font-display: swap;
    src: url("../fonts/ibm-plex-sans-latin.d28498895ed7.woff2") format("woff2");
    unicode-range:
        U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
        U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
        U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: "IBM Plex Sans";
    font-style: normal;
    font-weight: 400 700;
    font-stretch: 100%;
    font-display: swap;
    src: url("../fonts/ibm-plex-sans-latin-ext.d313794bd9fd.woff2") format("woff2");
    unicode-range:
        U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
        U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
        U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
    /* Colors */
    --bg: #fffdf9;
    --text: #1a1a1a;
    --text-body: #3d3d3d;
    --text-muted: #8c8c8c;
    --text-subtle: #5c5c5c;
    --accent: #c2760a;
    --border: #e5e5e5;

    /* Typography */
    --font-sans:
        "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;

    /* Spacing */
    --space-xs: 12px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-2xl: 80px;
    --space-3xl: 100px;
    --space-4xl: 120px;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Nav */
nav {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 10;
}
nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.logo span {
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    margin-left: 2px;
    vertical-align: baseline;
    position: relative;
    top: -1px;
}
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}
.lang-select {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    letter-spacing: 0.05em;
    padding: 4px 0;
}
.lang-select:focus {
    outline: none;
}
.nav-cta {
    padding: 10px var(--space-md);
    background: var(--text);
    color: var(--bg);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 6px;
    transition: background 0.2s;
}
.nav-cta:hover {
    background: var(--accent);
}

/* Hero */
.hero {
    padding: var(--space-4xl) 0 var(--space-3xl);
    text-align: center;
}
.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
}
.hero h1 em {
    font-style: normal;
    color: var(--accent);
}
.hero .subtitle {
    font-size: 1.15rem;
    color: var(--text-body);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}
.tagline {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* Sections */
section {
    padding: var(--space-2xl) 0;
}
.section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--space-xs);
}
.solution .container {
    max-width: 640px;
    margin: 0;
    padding: 0 var(--space-md);
}

/* Build list */
ul {
    list-style: none;
    margin-bottom: 8px;
}
li {
    font-size: 1.05rem;
    color: var(--text-body);
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
    margin-bottom: var(--space-xs);
}
li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

/* Footer */
footer {
    padding: var(--space-xl) 0;
}
footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-left {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.footer-links {
    display: flex;
    gap: var(--space-md);
}
.footer-links a {
    font-size: 0.85rem;
    color: var(--text-subtle);
    text-decoration: none;
}
.footer-links a:hover {
    color: var(--accent);
}

/* Tablet */
@media (max-width: 768px) {
    .hero {
        padding: var(--space-2xl) 0 var(--space-xl);
    }
    .hero h1 {
        font-size: 2.4rem;
    }
    .hero .subtitle {
        font-size: 1.05rem;
    }
    .solution .container {
        max-width: none;
        margin: 0 auto;
    }
    section {
        padding: var(--space-xl) 0;
    }
    footer {
        padding: var(--space-lg) 0;
    }
    footer .container {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    nav {
        padding: var(--space-sm) 0;
    }
    .logo {
        font-size: 1.3rem;
    }
    .logo span {
        width: 8px;
        height: 8px;
    }
    .nav-cta {
        padding: 8px 18px;
        font-size: 0.8rem;
    }
    .hero {
        padding: var(--space-xl) 0 48px;
    }
    .hero h1 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    .hero .subtitle {
        font-size: 1rem;
        margin: 0 auto 28px;
    }
    .tagline {
        font-size: 0.7rem;
    }
    section {
        padding: 48px 0;
    }
    li {
        font-size: 1rem;
    }
    .footer-links {
        gap: var(--space-sm);
    }
}