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

body {
    font-family: Arial, sans-serif;
    background: #f2f2f2;
    color: #1a1a1a;
    line-height: 1.6;
}

.container {
    width: 94%;
    max-width: 1600px;
    margin: auto;
}

.site-header {
    background: #006c10;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    position: relative;
}

.logo-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    z-index: 1002;
}

.site-logo {
    height: 90px;
    width: auto;
    display: block;
}

.menu-toggle {
    display: none;
    width: 52px;
    height: 52px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1002;
}

.menu-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background: #ffffff;
    margin: 6px auto;
    border-radius: 5px;
    transition: 0.3s ease;
}

.nav-area {
    display: flex;
    align-items: center;
    gap: 18px;
}

.menu {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.menu a {
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    padding: 12px 16px;
    border-radius: 999px;
    transition: 0.3s ease;
}

.menu a:hover,
.menu a.active {
    background: #ffd91a;
    color: #111111;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.icon-btn {
    width: 54px;
    height: 54px;
    background: #ffd91a;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: 0.3s ease;
}

.icon-btn:hover {
    transform: translateY(-2px);
}

.social-svg {
    width: 24px;
    height: 24px;
    fill: #111111;
    display: block;
}

.hero-green {
    background: linear-gradient(135deg, #00852d 0%, #057327 100%);
    min-height: 620px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 40px 0;
}

.hero-text h1 {
    font-size: 72px;
    line-height: 1.05;
    color: #ffffff;
    margin-bottom: 20px;
    max-width: 760px;
}

.hero-text p {
    font-size: 24px;
    color: #eef8ef;
    max-width: 760px;
    margin-bottom: 30px;
}

.hero-main-btn {
    display: inline-block;
    background: #ffd91a;
    color: #111111;
    text-decoration: none;
    font-weight: 800;
    padding: 16px 34px;
    border-radius: 999px;
    font-size: 14px;
}

.hero-visual {
    position: relative;
    min-height: 420px;
}

.circle {
    position: absolute;
    border: 6px solid rgba(255, 217, 26, 0.95);
    border-radius: 50%;
}

.big-circle {
    width: 340px;
    height: 340px;
    right: 30px;
    top: 30px;
}

.small-circle {
    width: 150px;
    height: 150px;
    left: 40px;
    top: 35px;
}

.device-card {
    position: absolute;
    right: 80px;
    top: 110px;
    width: 340px;
    height: 220px;
    background: #ffcc1a;
    border-radius: 26px;
    box-shadow: 0 14px 35px rgba(0,0,0,0.25);
    padding: 18px;
}

.device-screen {
    width: 100%;
    height: 100%;
    border-radius: 18px;
    background: linear-gradient(135deg, #0d2340, #173d66);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    font-weight: 800;
}

.feature-strip {
    background: #efefef;
    padding: 22px 0 36px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 18px;
}

.feature-box {
    background: #ffffff;
    border-radius: 16px;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    font-size: 22px;
    font-weight: 700;
    color: #18321f;
    box-shadow: 0 5px 16px rgba(0,0,0,0.08);
}

.section-intro {
    padding: 70px 0 80px;
    text-align: center;
    background: #ffffff;
}

.section-intro h2 {
    font-size: 52px;
    color: #0b4f16;
    margin-bottom: 18px;
    line-height: 1.15;
}

.section-intro p {
    max-width: 980px;
    margin: auto;
    font-size: 24px;
    color: #444444;
}

.site-footer {
    background: #006c10;
    color: #ffffff;
    text-align: center;
    padding: 22px 0;
}

/* Large tablets */
@media (max-width: 1200px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-text h1 {
        font-size: 54px;
    }

    .hero-text p {
        font-size: 20px;
    }
}

/* Tablets */
@media (max-width: 991px) {
    .site-logo {
        height: 72px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-area {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        width: 100%;
        background: #006c10;
        padding: 14px;
        border-radius: 14px;
        box-shadow: 0 10px 25px rgba(0,0,0,0.18);
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .nav-area.active {
        display: flex;
    }

    .menu {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .menu a {
        display: block;
        text-align: center;
        font-size: 14px;
        padding: 12px;
    }

    .header-actions {
        justify-content: center;
        padding-top: 6px;
    }

    .hero-green {
        min-height: auto;
        padding: 30px 0 40px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 10px 0;
    }

    .hero-text {
        text-align: left;
    }

    .hero-text h1 {
        font-size: 42px;
        max-width: 100%;
    }

    .hero-text p {
        font-size: 18px;
        max-width: 100%;
    }

    .hero-visual {
        min-height: 270px;
    }

    .device-card {
        right: 20px;
        top: 70px;
        width: 260px;
        height: 170px;
    }

    .device-screen {
        font-size: 28px;
    }

    .big-circle {
        width: 250px;
        height: 250px;
        right: 0;
        top: 20px;
    }

    .small-circle {
        width: 110px;
        height: 110px;
        left: 20px;
        top: 25px;
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-box {
        min-height: 110px;
        font-size: 18px;
        border-radius: 14px;
    }

    .section-intro h2 {
        font-size: 34px;
    }

    .section-intro p {
        font-size: 18px;
    }
}

/* Mobile */
@media (max-width: 767px) {
    .site-header {
        padding: 8px 0;
    }

    .header-wrap {
        min-height: 64px;
    }

    .site-logo {
        height: 48px;
    }

    .menu-toggle {
        width: 44px;
        height: 44px;
    }

    .menu-toggle span {
        width: 26px;
        height: 3px;
        margin: 5px auto;
    }

    .nav-area {
        top: calc(100% + 6px);
        padding: 12px;
        border-radius: 12px;
    }

    .menu a {
        font-size: 13px;
        padding: 11px 10px;
    }

    .header-actions {
        gap: 12px;
    }

    .icon-btn {
        width: 46px;
        height: 46px;
        border-radius: 10px;
    }

    .social-svg {
        width: 20px;
        height: 20px;
    }

    .hero-green {
        padding: 18px 0 26px;
    }

    .hero-text h1 {
        font-size: 26px;
        line-height: 1.15;
        margin-bottom: 12px;
    }

    .hero-text p {
        font-size: 15px;
        margin-bottom: 18px;
    }

    .hero-main-btn {
        padding: 12px 22px;
        font-size: 12px;
    }

    .hero-visual {
        min-height: 220px;
    }

    .device-card {
        right: 10px;
        top: 52px;
        width: 190px;
        height: 125px;
        border-radius: 18px;
        padding: 10px;
    }

    .device-screen {
        font-size: 22px;
        border-radius: 12px;
    }

    .big-circle {
        width: 180px;
        height: 180px;
        right: 0;
        top: 18px;
        border-width: 4px;
    }

    .small-circle {
        width: 80px;
        height: 80px;
        left: 10px;
        top: 16px;
        border-width: 4px;
    }

    .feature-strip {
        padding: 18px 0 24px;
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .feature-box {
        min-height: 92px;
        font-size: 13px;
        line-height: 1.3;
        padding: 12px 8px;
        border-radius: 12px;
    }

    .section-intro {
        padding: 40px 0 46px;
    }

    .section-intro h2 {
        font-size: 26px;
        margin-bottom: 12px;
    }

    .section-intro p {
        font-size: 15px;
    }

    .site-footer {
        padding: 18px 0;
        font-size: 14px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .container {
        width: 92%;
    }

    .site-logo {
        height: 42px;
    }

    .hero-text h1 {
        font-size: 24px;
    }

    .hero-text p {
        font-size: 14px;
    }

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

    .feature-box {
        min-height: 88px;
        font-size: 13px;
    }

    .device-card {
        width: 170px;
        height: 112px;
    }

    .device-screen {
        font-size: 20px;
    }
}