:root {
    --primary: #D4914A;
    --primary-hover: #B8753A;
    --primary-light: #F5E6D3;
    --text: #1a1a1a;
    --text-muted: #555555;
    --bg: #FDF9F4;
    --card-bg: #FFFFFF;
    --border: #EDE4D8;
    --footer-bg: #3D3226;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
    --radius: 16px;
    --max-width: 1100px;
}

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

body {
    font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========== Header ========== */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.92rem;
    transition: color 0.2s;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    border-radius: 2px;
    transition: width 0.25s;
}

.nav a:hover {
    color: var(--primary);
}

.nav a:hover::after {
    width: 100%;
}

.nav a.active {
    color: var(--primary);
}

.nav a.active::after {
    width: 100%;
}

/* ========== Hero ========== */
.hero {
    background: linear-gradient(135deg, rgba(61, 50, 38, 0.55), rgba(212, 145, 74, 0.45)),
                url('hero.avif');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 9rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3.6rem;
    font-weight: 300;
    margin-bottom: 1.2rem;
    letter-spacing: 0.06em;
    line-height: 1.3;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #E0A85C);
    color: #fff;
    padding: 1rem 2.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.04em;
    transition: transform 0.25s, box-shadow 0.25s;
    box-shadow: 0 4px 16px rgba(212, 145, 74, 0.35);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(212, 145, 74, 0.5);
}

/* ========== Sections ========== */
section {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3.5rem;
    font-size: 2.4rem;
    font-weight: 400;
    color: var(--text);
    letter-spacing: 0.05em;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #E0A85C);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* ========== Intro Section ========== */
.intro-text {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 2;
}

/* ========== About Content ========== */
.about-content {
    background: var(--card-bg);
    padding: 3rem 3.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    line-height: 2;
    max-width: 900px;
    margin: 0 auto;
}

.about-content p {
    margin-bottom: 1.2rem;
    text-indent: 2em;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.about-content h3 {
    margin: 2rem 0 0.8rem;
    color: var(--text);
    font-weight: 600;
    font-size: 1.15rem;
}

.about-content h3:first-child {
    margin-top: 0;
}

.about-content ul {
    margin: 0.5rem 0 1rem 1.5rem;
    color: var(--text-muted);
}

.about-content ul li {
    margin-bottom: 0.5rem;
}

/* ========== Contact Items ========== */
.contact-item h3 {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.8rem;
    font-size: 1.15rem;
}

.contact-item p {
    text-indent: 0;
    margin-bottom: 0.4rem;
}

/* ========== Features Grid ========== */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    padding: 2.5rem 2.2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.feature-card::before {
    content: '';
    display: block;
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), #E0A85C);
    border-radius: 2px;
    margin: 0 auto 1.2rem;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    color: var(--text);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.8;
    font-size: 1rem;
}

/* ========== Footer ========== */
.footer {
    background-color: var(--footer-bg);
    color: rgba(255, 255, 255, 0.75);
    text-align: center;
    padding: 4rem 0;
    margin-top: 6rem;
    font-size: 0.9rem;
    line-height: 2;
}

.footer strong {
    color: #fff;
    font-size: 0.95rem;
}

/* ========== Responsive ========== */
@media (max-width: 767px) {
    .hero {
        padding: 5rem 0;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    section {
        padding: 3.5rem 0;
    }

    .about-content {
        padding: 1.8rem;
    }

    .nav {
        gap: 1rem;
    }

    .nav a {
        font-size: 0.82rem;
    }
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .logo {
        font-size: 1.45rem;
    }

    .hero-content h2 {
        font-size: 3rem;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-content h2 {
        font-size: 3.6rem;
    }
}