:root {
    --header-bg: linear-gradient(135deg, #f0f2f5 0%, #f7fafd 100%);
    --header-text: #000035;
    --nav-bg: rgba(255,255,255,0.95);
    --nav-blur: blur(12px);
    --nav-text: #000035;
    --nav-hover: #4a90e2;
    --feature-bg: #ffffff;
    --feature-title: #4a90e2;
    --feature-desc: #334155;
    --footer-bg: #f8f9fa;
    --footer-text: #4a5568;
    --github-btn-bg: #000035;
    --github-btn-text: #fff;
    --github-btn-hover: #000035;
    --getstarted-bg: #4a90e2;
    --getstarted-text: #fff;
    --getstarted-hover: #357abd;
}

html {
    box-sizing: border-box;
    width: 100%;
    overflow-x: hidden;
}
*, *:before, *:after {
    box-sizing: inherit;
}
body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Poppins', 'Roboto', Arial, sans-serif;
    background: #f7fafd;
    color: #222;
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow-x: hidden;
    position: relative;
}
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nav-bg);
    color: var(--nav-text);
    padding: 0 2rem;
    min-height: 64px;
    height: 72px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: var(--nav-blur);
    box-shadow: 0 4px 24px 0 rgba(30,60,114,0.10);
    width: 100%;
}
.navbar-left {
    display: flex;
    align-items: center;
}
.navbar-logo {
    width: 36px;
    height: 36px;
    margin-right: 12px;
    border-radius: 8px;
    box-shadow: 0 2px 8px 0 rgba(30,60,114,0.08);
}
.navbar-title {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
}
.navbar-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.navbar-link {
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.2s;
}
.navbar-link:hover {
    color: var(--nav-hover);
}
.github-btn {
    background: var(--github-btn-bg);
    color: var(--github-btn-text);
    border: none;
    border-radius: 6px;
    padding: 0.5rem 1.1rem;
    font-size: 1rem;
    font-weight: 600;
    margin-left: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    box-shadow: 0 2px 8px 0 rgba(30,60,114,0.08);
}
.github-btn:hover {
    background: var(--github-btn-hover);
    color: #fff;
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--nav-text);
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    width: 30px;
    height: 30px;
    position: relative;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--nav-text);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: all 0.3s ease;
}
.hamburger span:nth-child(1) {
    top: 8px;
}
.hamburger span:nth-child(2) {
    top: 14px;
}
.hamburger span:nth-child(3) {
    top: 20px;
}
.hamburger.active span:nth-child(1) {
    transform: translateX(-50%) translateY(6px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-50%) scale(0);
}
.hamburger.active span:nth-child(3) {
    transform: translateX(-50%) translateY(-6px) rotate(-45deg);
}
.hamburger:hover {
    color: var(--nav-hover);
}
.header {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.15) 0%, rgba(74, 144, 226, 0.05) 25%, rgba(74, 144, 226, 0) 33%),
                linear-gradient(315deg, rgba(74, 144, 226, 0.15) 0%, rgba(74, 144, 226, 0.05) 25%, rgba(74, 144, 226, 0) 33%);
    color: var(--header-text);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 33vh;
    min-height: 220px;
    text-align: center;
    box-shadow: 0 2px 16px 0 rgba(0,0,0,0.05);
    position: relative;
    margin-bottom: 2.5rem;
    margin-top: 72px;
}
.header-content {
    position: relative;
    z-index: 1;
}
.header-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
    font-family: 'Poppins', Arial, sans-serif;
}
.header-motto {
    font-size: 1.3rem;
    font-weight: 400;
    opacity: 0.95;
    margin-bottom: 2.2rem;
    font-family: 'Poppins', Arial, sans-serif;
}
.get-started-btn {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.85rem 2.2rem;
    font-size: 1.13rem;
    font-weight: 600;
    border-radius: 8px;
    background: var(--getstarted-bg);
    color: var(--getstarted-text);
    border: none;
    box-shadow: 0 2px 12px 0 rgba(74, 144, 226, 0.2);
    cursor: pointer;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.get-started-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}
.get-started-btn:hover {
    background: var(--getstarted-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 24px 0 rgba(74, 144, 226, 0.3);
}
.get-started-btn:hover::before {
    left: 100%;
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin: 4rem auto;
    max-width: 1400px;
    width: 100%;
    padding: 0 2rem;
    align-items: stretch;
}
.feature {
    background: var(--feature-bg);
    border-radius: 16px;
    box-shadow: 0 2px 16px 0 rgba(0,0,0,0.05);
    padding: 2.5rem 2rem;
    flex: 1 1 300px;
    min-width: 280px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}
.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--feature-title);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.feature:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 32px 0 rgba(0,0,0,0.08);
}
.feature:hover::before {
    opacity: 1;
}
.feature-title {
    color: var(--feature-title);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.feature-title i {
    color: var(--feature-title);
    font-size: 1.4rem;
    transition: transform 0.3s ease;
}
.feature:hover .feature-title i {
    transform: scale(1.1);
}
.feature-desc {
    color: var(--feature-desc);
    font-size: 1.05rem;
    line-height: 1.6;
    opacity: 0.9;
}
.footer {
    margin-top: 6rem;
    background: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 3rem 2rem;
    font-size: 0.95rem;
    letter-spacing: 0.2px;
    border-top: 1px solid rgba(0,0,0,0.05);
    line-height: 1.7;
    font-family: 'Roboto', 'Poppins', Arial, sans-serif;
    width: 100%;
}
.footer a {
    color: var(--nav-hover);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}
.footer a:hover {
    color: var(--github-btn-hover);
}
.footer .footer-main {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5em;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    word-break: break-word;
}
.footer .footer-made {
    font-size: 0.95rem;
    font-weight: 400;
    margin-bottom: 0.3em;
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    word-break: break-word;
}
.footer .footer-disclaimer {
    font-size: 0.9rem;
    font-style: italic;
    opacity: 0.8;
    margin-top: 1em;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    word-break: break-word;
}
@media (max-width: 1400px) {
    .features {
        max-width: 1200px;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}
@media (max-width: 700px) {
    body {
        padding-top: 64px;
    }
    .navbar {
        padding: 0 1rem;
        height: 64px;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: var(--nav-bg);
        backdrop-filter: var(--nav-blur);
    }
    .navbar-logo {
        width: 32px;
        height: 32px;
    }
    .navbar-title {
        font-size: 1.2rem;
    }
    .hamburger {
        display: block;
    }
    .navbar-links {
        position: fixed;
        top: 64px;
        right: -300px;
        width: 280px;
        height: calc(100vh - 64px);
        background: rgb(255 255 255);
        backdrop-filter: var(--nav-blur);
        padding: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        transition: all 0.3s ease;
        box-shadow: -4px 0 24px 0 rgba(30,60,114,0.10);
        z-index: 999;
        display: flex;
        opacity: 0;
        visibility: hidden;
        transform: translateX(100%);
        overflow-y: auto;
    }
    .navbar-links.active {
        right: 0;
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
    }
    .navbar-link {
        width: 100%;
        text-align: left;
        padding: 0.75rem;
        font-size: 1.1rem;
        border-radius: 8px;
        transition: background-color 0.2s ease;
    }
    .navbar-link:hover {
        background-color: rgba(37, 99, 235, 0.1);
    }
    .github-btn {
        width: 100%;
        text-align: left;
        padding: 0.75rem;
        font-size: 1.1rem;
        margin: 0.5rem 0 0 0;
        border-radius: 8px;
        justify-content: flex-start;
    }
    .header {
        height: 40vh;
        min-height: 280px;
        padding: 0 1rem;
        margin-top: 0;
    }
    .header-title {
        font-size: 2.2rem;
    }
    .header-motto {
        font-size: 1.1rem;
        margin-bottom: 1.8rem;
    }
    .get-started-btn {
        padding: 0.75rem 1.8rem;
        font-size: 1rem;
    }
    .features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1.5rem;
        margin: 3rem auto;
    }
    .feature {
        max-width: 100%;
        padding: 2rem 1.5rem;
    }
    .feature-title {
        font-size: 1.2rem;
    }
    .feature-desc {
        font-size: 1rem;
    }
    .footer {
        padding: 2rem 1.5rem;
        margin-top: 4rem;
    }
}
@media (max-width: 400px) {
    .header-title {
        font-size: 1.8rem;
    }
    .header-motto {
        font-size: 1rem;
    }
    .get-started-btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.95rem;
    }
    .feature-title {
        font-size: 1rem;
    }
    .feature-desc {
        font-size: 0.9rem;
    }
}