@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    --color-bg: #fcfcfb;
    --color-text: #1d1d1b;
    --color-text-muted: #7a7a76;
    --color-rule: #c5c2bd;
}

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

html {
    font-size: 18px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    letter-spacing: -0.01em;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 6rem 2rem 8rem;
}

/* Header */
header {
    margin-bottom: 3.5rem;
}

.logo {
    display: block;
    height: 76px;
    width: auto;
}

/* Sections */
section {
    margin-bottom: 3.5rem;
}

/* Intro */
.intro {
    margin-bottom: 5rem;
}

.intro .tagline {
    font-size: 1.4rem;
    line-height: 1.5;
    letter-spacing: -0.015em;
    margin-bottom: 1rem;
    font-weight: 400;
}

.intro .tagline strong {
    font-weight: 600;
}

.intro > p:last-child {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* Section headings */
h2 {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #5a5a56;
    margin-bottom: 1.25rem;
}

/* Paragraphs */
p {
    margin-bottom: 0.9rem;
}

section > p:last-child,
section > ul:last-child {
    margin-bottom: 0;
}

/* Lists */
ul {
    list-style: none;
    margin: 0;
}

li {
    position: relative;
    padding-left: 1.1rem;
    margin-bottom: 0.5rem;
}

li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

li:last-child {
    margin-bottom: 0;
}

/* Links */
a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.15em;
    text-decoration-color: var(--color-rule);
}

a:hover {
    text-decoration-color: var(--color-text);
}

/* Contact section */
.contact {
    margin-top: 5rem;
}

.contact .email-line {
    margin-bottom: 0.25rem;
}

.contact .email {
    display: block;
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    text-decoration-color: var(--color-rule);
}

.contact .email:hover {
    text-decoration-color: var(--color-text);
}

.contact .helper {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.contact .helper-list {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.contact .helper-list li {
    margin-bottom: 0.1rem;
}

/* Mobile */
@media (max-width: 680px) {
    html {
        font-size: 17px;
    }

    main {
        padding: 4.5rem 1.75rem 6rem;
    }

    header {
        margin-bottom: 3rem;
    }

    .logo {
        height: 64px;
    }

    .intro {
        margin-bottom: 4rem;
    }

    .intro .tagline {
        font-size: 1.3rem;
    }

    section {
        margin-bottom: 3rem;
    }

    .contact {
        margin-top: 3.5rem;
    }

    .contact .email {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    main {
        padding: 3.5rem 1.5rem 5rem;
    }

    header {
        margin-bottom: 2.5rem;
    }

    .logo {
        height: 56px;
    }

    .intro {
        margin-bottom: 3.5rem;
    }

    .intro .tagline {
        font-size: 1.15rem;
    }

    section {
        margin-bottom: 2.5rem;
    }

    h2 {
        margin-bottom: 1rem;
    }

    .contact {
        margin-top: 3rem;
    }

    .contact .email {
        font-size: 1.05rem;
    }
}