:root {
    --primary: #FF7A1A;
    --primary-deep: #D85E0A;
    --accent: #4E6BFF;
    --bg: #FFF7ED;
    --ink: #22222A;
    --muted: #6B6B75;
    --panel: #FFFFFF;
    --line: rgba(255, 122, 26, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.8;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2.2rem;
}

.section {
    padding: 110px 0;
}

.section.alt {
    background: #FFF1E0;
}

.eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.25rem;
    text-transform: uppercase;
    color: var(--accent);
}

.section-title {
    display: grid;
    gap: 0.6rem;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.9rem;
    font-weight: 900;
}

.section-title p {
    color: var(--muted);
    max-width: 720px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(78, 107, 255, 0.12);
    color: var(--accent);
    font-weight: 700;
    font-size: 0.9rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 14px 34px;
    border-radius: 999px;
    font-weight: 800;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.btn.primary {
    background: linear-gradient(120deg, var(--primary), var(--primary-deep));
    color: #fff;
}

.btn.ghost {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 26px rgba(255, 122, 26, 0.3);
}

.btn.ghost:hover {
    background: var(--primary);
    color: #fff;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 247, 237, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(12px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2.2rem;
}

.brand {
    font-size: 1.7rem;
    font-weight: 900;
    color: var(--primary);
}

.brand span {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 1.6rem;
    align-items: center;
}

.nav-links a {
    font-weight: 700;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 0;
    height: 3px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 16px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
}

/* Hero */
.hero {
    margin-top: 80px;
    padding: 160px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    right: -160px;
    top: -120px;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(78, 107, 255, 0.2), transparent 70%);
}

.hero::after {
    content: "";
    position: absolute;
    left: -120px;
    bottom: -160px;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(255, 122, 26, 0.25), transparent 70%);
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
}

.hero h1 {
    font-size: 3.4rem;
    font-weight: 900;
    margin: 1rem 0 1.4rem;
}

.hero p {
    color: var(--muted);
    font-size: 1.15rem;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-collage {
    display: grid;
    gap: 1rem;
}

.hero-card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.2rem;
    border: 1px solid var(--line);
    box-shadow: 0 16px 28px rgba(34, 34, 42, 0.08);
}

.hero-card img {
    border-radius: 14px;
    height: 180px;
    object-fit: cover;
}

.hero-ribbon {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.ribbon-item {
    background: var(--panel);
    border: 1px dashed var(--primary);
    padding: 0.9rem 1.2rem;
    border-radius: 14px;
    min-width: 160px;
}

.ribbon-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-deep);
}

.ribbon-item span {
    color: var(--muted);
    font-size: 0.9rem;
}

/* Layout blocks */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.6rem;
    border: 1px solid var(--line);
    display: grid;
    gap: 0.8rem;
}

.card p {
    color: var(--muted);
}

.quote {
    border-left: 4px solid var(--primary);
    padding-left: 1rem;
    color: var(--muted);
}

/* Masonry-style */
.mosaic {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 2rem;
}

.mosaic .tile {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.6rem;
    border: 1px solid var(--line);
    display: grid;
    gap: 0.8rem;
}

.mosaic .tile img {
    border-radius: 14px;
    height: 220px;
    object-fit: cover;
}

.tile-list {
    list-style: none;
    display: grid;
    gap: 0.6rem;
    color: var(--muted);
}

.tile-list li::before {
    content: "•";
    color: var(--accent);
    margin-right: 0.5rem;
}

/* Products */
.filter-tabs {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-tab {
    padding: 9px 18px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--muted);
    font-weight: 700;
    cursor: pointer;
}

.filter-tab.active,
.filter-tab:hover {
    background: var(--primary);
    color: #fff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.product-card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.4rem;
    border: 1px solid var(--line);
    display: grid;
    gap: 0.8rem;
}

.product-card img {
    border-radius: 14px;
    height: 170px;
    object-fit: cover;
}

/* News */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.news-card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.4rem;
    border: 1px solid var(--line);
    display: grid;
    gap: 0.6rem;
}

.news-card span {
    color: var(--accent);
    font-weight: 700;
}

/* Timeline */
.timeline {
    display: grid;
    gap: 1.5rem;
}

.timeline-item {
    background: var(--panel);
    border-radius: 16px;
    padding: 1.4rem;
    border: 1px solid var(--line);
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
}

.timeline-item strong {
    color: var(--primary-deep);
    font-size: 1.3rem;
}

/* Team */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.team-card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.4rem;
    border: 1px solid var(--line);
    display: grid;
    gap: 0.7rem;
}

.team-card img {
    border-radius: 14px;
    height: 200px;
    object-fit: cover;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
}

.form {
    display: grid;
    gap: 1rem;
}

.form input,
.form textarea {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: #fff;
    font-size: 1rem;
}

.form textarea {
    min-height: 140px;
    resize: vertical;
}

.info-card {
    background: var(--panel);
    border-radius: 18px;
    padding: 1.4rem;
    border: 1px solid var(--line);
}

.info-list {
    display: grid;
    gap: 0.8rem;
    color: var(--muted);
}

.info-card img {
    border-radius: 14px;
    height: 200px;
    object-fit: cover;
    margin-top: 1rem;
}

/* Footer */
.footer {
    padding: 3.5rem 0;
    background: #12141C;
    color: #D3D7E0;
    text-align: center;
}

.footer-links {
    display: flex;
    gap: 1.8rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.2rem;
}

.footer a:hover {
    color: var(--accent);
}

/* Reveal */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: all 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid,
    .mosaic,
    .contact-grid,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .product-grid,
    .news-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-links {
        position: fixed;
        top: 78px;
        left: 0;
        right: 0;
        background: rgba(255, 247, 237, 0.98);
        padding: 1.6rem;
        flex-direction: column;
        display: none;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: inline-flex;
    }
}

@media (max-width: 640px) {
    .product-grid,
    .news-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.4rem;
    }

    .section-title h2 {
        font-size: 2.2rem;
    }
}