* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, "Noto Sans TC", sans-serif;
    background: #f4f2ed;
    color: #111;
    line-height: 1.7;
}

header {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 0 6vw;

    border-bottom: 1px solid #ccc;
}

.logo {
    font-size: 20px;
    font-weight: 700;
}

nav {
    display: flex;
    gap: 30px;
}

nav a {
    color: #111;
    text-decoration: none;
    font-size: 14px;
}

main {
    max-width: 1200px;
    margin: auto;
}

section {
    padding: 120px 6vw;
}

.hero {
    min-height: 80vh;

    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    font-size: 12px;
    letter-spacing: 0.15em;
    font-weight: 700;
}

h1 {
    font-size: clamp(50px, 8vw, 100px);
    line-height: 1.05;
    margin: 20px 0;
}

h2 {
    font-size: clamp(36px, 5vw, 64px);
    line-height: 1.15;
    margin: 20px 0 60px;
}

h3 {
    font-size: 24px;
}

.hero-text {
    max-width: 600px;
    font-size: 18px;
    color: #555;
}

.button {
    display: inline-block;

    width: fit-content;

    margin-top: 30px;
    padding: 14px 24px;

    background: #111;
    color: white;

    text-decoration: none;

    font-size: 14px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    border-top: 2px solid #111;
    padding: 25px 0;
}

.card p {
    color: #666;
}

.equipment-list {
    border-top: 1px solid #bbb;
}

.equipment-list article {
    padding: 30px 0;
    border-bottom: 1px solid #bbb;
}

.equipment-list span {
    font-size: 11px;
    letter-spacing: 0.12em;
}

.equipment-list h3 {
    margin: 8px 0;
}

.demand {
    background: #111;
    color: white;
}

.demand p {
    max-width: 600px;
    color: #bbb;
}

.demand .button {
    background: white;
    color: #111;
}

footer {
    padding: 50px 6vw;
    border-top: 1px solid #ccc;

    display: flex;
    justify-content: space-between;

    font-size: 12px;
}

@media (max-width: 700px) {

    header {
        height: auto;
        padding: 20px;
        align-items: flex-start;
    }

    nav {
        display: none;
    }

    section {
        padding: 80px 20px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    footer {
        flex-direction: column;
        gap: 10px;
    }

}