:root {
    --primary-color: #2D74F6;
    --primary-dark: #1A5AD1;
    --text-main: #333333;
    --text-gray: #666666;
    --bg-light: #F4F7FB;
    --surface: #ffffff;
    --container-width: min(1120px, calc(100vw - 32px));
    --hero-offset: clamp(32px, 6vw, 72px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

header {
    background: rgba(255, 255, 255, 0.96);
    min-height: 80px;
    padding: 16px clamp(16px, 4vw, 48px);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 24px rgba(17, 42, 84, 0.08);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: clamp(10px, 1.5vw, 18px);
    flex-wrap: wrap;
    max-width: calc(100% - 260px);
}

.logo-area img {
    height: clamp(36px, 4vw, 48px);
    max-width: min(42vw, 220px);
    object-fit: contain;
}

.header-actions {
    position: absolute;
    top: 50%;
    right: clamp(16px, 4vw, 48px);
    transform: translateY(-50%);
    display: flex;
    gap: 12px;
    flex-wrap: nowrap;
    justify-content: flex-end;
}

.btn-sm {
    min-height: 44px;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: clamp(14px, 1.2vw, 15px);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-solid {
    background: var(--primary-color);
    color: #fff;
    border: 1px solid var(--primary-color);
}

.hero {
    position: relative;
    width: 100%;
    min-height: clamp(360px, 52vw, 800px);
    background: url('../images/banner@1x-DWfNLZKj.png') center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 48px 16px calc(var(--hero-offset) + 48px);
    background-color: #1362F5;
}

.hero-focus-box {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 24px;
    width: min(100%, 720px);
    padding: clamp(24px, 4vw, 40px) clamp(20px, 6vw, 56px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(18px, 2.6vw, 30px);
    text-align: center;
    box-shadow: 0 16px 40px rgba(0, 32, 100, 0.2);
    margin-top: 9vw;
}

.hero h1 {
    font-size: clamp(2rem, 4.8vw, 3.75rem);
    font-weight: 900;
    color: #ffffff;
    line-height: 1.2;
    letter-spacing: 0.08em;
    text-shadow: 0 8px 24px rgba(0, 50, 150, 0.45);
}

.hero h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 900;
    color: #ffffff;
    letter-spacing: 0.08em;
    text-shadow: 0 8px 24px rgba(0, 50, 150, 0.45);
}

.entry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    min-height: 52px;
    padding: 14px clamp(28px, 5vw, 56px);
    font-size: clamp(16px, 1.8vw, 22px);
    font-weight: 600;
    color: #fff;
    background: linear-gradient(120deg, #0f4de0 0%, #2f7bff 38%, #1b63ff 68%, #003ec9 100%);
    background-size: 220% 220%;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 12px 30px rgba(22, 93, 255, 0.35);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    border: none;
    cursor: pointer;
    animation: entryPulse 2s ease-in-out infinite, entryGradient 5.2s ease-in-out infinite;
    will-change: transform, box-shadow, background-position;
}

.entry-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, rgba(255, 255, 255, 0) 15%, rgba(255, 255, 255, 0.28) 48%, rgba(255, 255, 255, 0) 82%);
    transform: translateX(-130%);
    animation: entrySheen 3.8s ease-in-out infinite;
    z-index: -1;
}

.entry-btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 18px 40px rgba(22, 93, 255, 0.48);
    animation-play-state: paused;
}

.entry-btn:hover::before {
    animation-play-state: paused;
}

@keyframes entryPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 12px 30px rgba(194, 205, 233, 0.34);
        filter: brightness(1);
    }

    30% {
        transform: scale(1.055);
        box-shadow: 0 20px 44px rgba(194, 205, 233, 0.5);
        filter: brightness(1.1);
    }

    58% {
        transform: scale(0.978);
        box-shadow: 0 8px 22px rgba(194, 205, 233, 0.24);
        filter: brightness(0.95);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 12px 30px rgba(194, 205, 233, 0.34);
        filter: brightness(1);
    }
}

@keyframes entryGradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes entrySheen {
    0%,
    100% {
        transform: translateX(-130%);
        opacity: 0;
    }

    18% {
        opacity: 0;
    }

    42% {
        transform: translateX(130%);
        opacity: 1;
    }

    55% {
        opacity: 0;
    }
}

.entry-btn2 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 28px;
    font-size: clamp(15px, 1.4vw, 18px);
    font-weight: 600;
    color: #165DFF;
    background: #ffffff;
    border-radius: 999px;
    text-decoration: none;
    border: 2px solid #165DFF;
    box-shadow: 0 8px 24px rgba(22, 93, 255, 0.12);
    transition: all 0.3s ease;
    cursor: pointer;
}

.entry-btn2:hover {
    background: #165DFF;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(22, 93, 255, 0.25);
}

.intro-section {
    width: var(--container-width);
    margin: calc(var(--hero-offset) * -1) auto 40px;
    position: relative;
    z-index: 10;
}

.intro-section + .intro-section {
    margin-top: 0;
}

.intro-card {
    background: var(--surface);
    border-radius: 24px;
    padding: clamp(24px, 4vw, 44px);
    box-shadow: 0 18px 44px rgba(17, 42, 84, 0.09);
}

.intro-header {
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.intro-header h3 {
    font-size: clamp(22px, 2.4vw, 30px);
    color: var(--primary-color);
    border-left: 5px solid var(--primary-color);
    padding-left: 14px;
    line-height: 1.3;
}

.intro-content p {
    font-size: clamp(15px, 1.5vw, 18px);
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.9;
    word-break: break-word;
}

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

.intro-notice {
    color: #d93025 !important;
}

.intro-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

footer {
    background: #222;
    color: #d0d0d0;
    text-align: center;
    padding: 24px 16px;
    font-size: clamp(13px, 1.1vw, 15px);
}

.footer-link {
    color: #ffffff;
    text-decoration: none;
}

.footer-link:hover {
    text-decoration: underline;
}

@media (max-width: 900px) {
    header {
        min-height: 88px;
        align-items: flex-start;
        padding-right: 136px;
    }

    .logo-area {
        max-width: 100%;
        padding-right: 0;
    }

    .header-actions {
        position: absolute;
        top: 12px;
        right: 16px;
        transform: none;
        width: auto;
        justify-content: flex-end;
        flex-wrap: nowrap;
    }

    .hero {
        min-height: 420px;
        background-position: center;
        padding-top: 32px;
    }

    .hero-focus-box {
        border-radius: 20px;
    }
}

@media (max-width: 600px) {
    :root {
        --container-width: calc(100vw - 24px);
        --hero-offset: 20px;
    }

    header {
        min-height: 76px;
        padding: 12px 112px 12px 12px;
        gap: 10px;
    }

    .logo-area {
        gap: 10px;
        max-width: calc(100% - 4px);
    }

    .logo-area img {
        height: 32px;
        max-width: 42vw;
    }

    .header-actions {
        top: 10px;
        right: 12px;
        gap: 8px;
        /* flex-direction: column; */
        align-items: stretch;
    }

    .btn-sm {
        min-height: 28px;
        padding: 4px 10px;
        font-size: 12px;
        line-height: 1;
    }

    .entry-btn2 {
        width: 100%;
    }

    .hero {
        min-height: 360px;
        background: url('../images/banner@1x-DWfNLZKj.png') center/200% no-repeat;
        padding: 24px 12px 44px;
        align-items: flex-end;
        background-color: #1362F5;
    }

    .hero-focus-box {
        border-radius: 18px;
        padding-inline: 18px;
    }

    .hero h1 {
        letter-spacing: 0.04em;
    }

    .entry-btn {
        width: 100%;
    }

    .intro-section {
        margin-bottom: 20px;
    }

    .intro-card {
        border-radius: 18px;
        padding: 20px 16px;
    }

    .intro-header {
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .intro-links {
        gap: 12px;
    }

    footer {
        padding: 20px 12px 28px;
    }
}