@font-face {
            font-family: "Lato";
            src: url("./fonts/Lato-Light.woff2") format("woff2");
            font-weight: 300;
            font-style: normal;
        }

        @font-face {
            font-family: "Lato";
            src: url("./fonts/Lato-Regular.woff2") format("woff2");
            font-weight: 400;
            font-style: normal;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: #f5f6f6;
            color: #252929;
            font-family:
                "Lato",
                "Microsoft YaHei",
                "PingFang SC",
                sans-serif;
            font-weight: 300;
        }

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

        /* =========================
           顶部导航
        ========================= */

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;

            height: 76px;

            background: rgba(245, 246, 246, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);

            border-bottom: 1px solid rgba(0, 0, 0, 0.09);
        }

        .header-inner {
            max-width: 1180px;
            height: 100%;
            margin: auto;
            padding: 0 35px;

            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* Logo */

        .logo-placeholder {
            width: 34px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 34px;
        }

        .logo-placeholder img {
            display: block;
            width: 34px;
            height: 34px;
            object-fit: contain;
        }

        /* 导航 */

        .nav {
            display: flex;
            align-items: center;
            gap: 34px;
        }

        .nav a {
            position: relative;

            color: #555;
            font-size: 15px;
            font-weight: 300;

            transition:
                color 0.25s ease,
                opacity 0.25s ease;
        }

        .nav a::after {
            content: "";

            position: absolute;
            left: 50%;
            bottom: -8px;

            width: 0;
            height: 1px;

            background: #26878c;

            transform: translateX(-50%);
            transition: width 0.25s ease;
        }

        .nav a:hover {
            color: #26878c;
        }

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

        /* =========================
           Hero
        ========================= */

        .hero {
            min-height: 100vh;

            display: flex;
            align-items: center;

            max-width: 1180px;
            margin: auto;
            padding: 120px 35px 80px;
        }

        .hero-content {
            width: 100%;
        }

        .hero-subtitle {
                margin-top: 8px;
                color: #555;
                font-size: clamp(16.5px, 3vw, 29.5px);
                font-weight: 300;
                line-height: 1.3;
                letter-spacing: 0.02em;
            }

        .eyebrow {
            margin-bottom: 26px;

            color: #26878c;
            font-size: 14px;
            letter-spacing: 3px;
            font-weight: 400;
        }

        .hero h1 {
            margin: 0;

            color: #252929;

            font-size: clamp(52px, 8vw, 92px);
            line-height: 1.05;
            font-weight: 300;
            letter-spacing: -2px;
        }

        .hero h1 span {
            display: block;

            margin-top: 15px;

            color: #777;

            font-size: clamp(25px, 3vw, 38px);
            line-height: 1.3;

            letter-spacing: 0;
        }

        .hero-description {
            max-width: 550px;

            margin-top: 42px;

            color: #777;

            font-size: 17px;
            line-height: 2;

            font-weight: 300;
        }

        .hero-actions {
            margin-top: 45px;

            display: flex;
            align-items: center;
            gap: 25px;
        }

        .hero-button {
            position: relative;
            overflow: hidden;

            min-width: 130px;
            height: 42px;

            padding: 0 25px;

            display: inline-flex;
            align-items: center;
            justify-content: center;

            border: 1px solid #26878c;
            border-radius: 3px;

            color: #26878c;

            font-size: 15px;
            font-weight: 400;

            transition:
                color 0.3s ease,
                background 0.3s ease;
        }

        .hero-button:hover {
            color: #fff;
            background: #26878c;
        }

        .hero-button.secondary {
            border-color: #cfcfcf;
            color: #777;
        }

        .hero-button.secondary:hover {
            border-color: #cfcfcf;
            color: #444;
            background: #e7e9e9;
        }

        /* 向下箭头 */

        .scroll-hint {
            position: absolute;
            left: 50%;
            bottom: 35px;

            transform: translateX(-50%);

            color: #26878c;

            animation: floating 1.2s ease-in-out infinite;
        }

        .scroll-hint span {
            display: block;

            width: 20px;
            height: 20px;

            border-right: 2px solid #26878c;
            border-bottom: 2px solid #26878c;

            transform: rotate(45deg);
        }

        @keyframes floating {
            0%, 100% {
                transform: translate(-50%, 0);
            }

            50% {
                transform: translate(-50%, 12px);
            }
        }

        /* =========================
           通用 Section
        ========================= */

        .section {
            max-width: 1180px;
            margin: auto;

            padding: 120px 35px;
        }

        .section-label {
            margin-bottom: 20px;

            color: #26878c;

            font-size: 13px;
            letter-spacing: 3px;
            font-weight: 400;
        }

        .section-title {
            margin: 0;

            color: #444;

            font-size: clamp(30px, 4vw, 43px);
            font-weight: 300;
        }

        .section-description {
            max-width: 680px;

            margin-top: 28px;

            color: #777;

            font-size: 16px;
            line-height: 2;
        }

        .divider {
            width: 100%;
            height: 1px;

            background: #d5d8d8;
        }

        /* =========================
           关于社团
        ========================= */

        .about-grid {
            margin-top: 65px;

            display: grid;
            grid-template-columns: 1fr 1fr;

            gap: 80px;
        }

        .about-item h3 {
            margin: 0 0 15px;

            color: #444;

            font-size: 22px;
            font-weight: 300;
        }

        .about-item p {
            margin: 0;

            color: #777;

            font-size: 15px;
            line-height: 2;
        }

        /* =========================
           快速入口
        ========================= */

        .links {
            margin-top: 65px;

            display: grid;
            grid-template-columns: 1fr 1fr;

            column-gap: 100px;
            row-gap: 20px;
        }

        .link-card {
            padding: 28px 5px;

            display: flex;
            align-items: center;
            justify-content: space-between;

            border-bottom: 1px solid #ddd;

            color: #444;

            transition:
                color 0.25s ease,
                padding 0.25s ease,
                border-color 0.25s ease;
        }

        .link-card:hover {
            padding-left: 12px;

            color: #26878c;

            border-color: #26878c;
        }

        .link-card-title {
            font-size: 21px;
            font-weight: 300;
        }

        .link-card-arrow {
            color: #888;

            font-size: 20px;

            transition: transform 0.25s ease;
        }

        .link-card:hover .link-card-arrow {
            transform: translateX(7px);
            color: #26878c;
        }

        /* =========================
           最新动态
        ========================= */

        .news {
            margin-top: 65px;
        }

        .news-item {
            padding: 25px 5px;

            display: grid;
            grid-template-columns: 130px 1fr;

            border-bottom: 1px solid #eee;
        }

        .news-date {
            color: #888;
            font-size: 14px;
        }

        .news-content h3 {
            margin: 0 0 10px;

            color: #444;

            font-size: 19px;
            font-weight: 300;
        }

        .news-content p {
            margin: 0;

            color: #777;

            font-size: 14px;
            line-height: 1.8;
        }

        /* ========================================
        Members
        ======================================== */

        .members-list {
            max-width: 760px;
            margin-top: 10px;
        }

        .member-item {
            display: grid;
            grid-template-columns: 180px 1fr;
            align-items: center;
            padding: 22px 0;
            border-bottom: 1px solid rgba(0, 0, 0, .08);
        }

        .member-role {
            color: #888;
            font-size: 15px;
            font-weight: 300;
            line-height: 1.5;
        }

        .member-name {
            color: #333;
            font-size: 18px;
            font-weight: 400;
            line-height: 1.5;
        }

        .member-item:first-child {
            border-top: 1px solid rgba(0, 0, 0, .08);
        }

        .members-download {
            margin-top: 32px;
        }

        /* =========================
        表格标题
        ========================= */

        .member-table-header {
            max-width: 760px;
            margin-top: 55px;
            margin-bottom: 0;
            padding-bottom: 0px;
        }

        .member-table-header h2 {
            margin: 0;
            color: #444;
            font-size: 22px;
            font-weight: 300;
        }

        /* 手机端 */

        @media (max-width: 700px) {

            .members-list {
                margin-top: 30px;
            }

            .member-item {
                grid-template-columns: 1fr;
                gap: 5px;
                padding: 18px 0;
            }

            .member-role {
                font-size: 14px;
            }

            .member-name {
                font-size: 17px;
            }

        }

        /* =========================
           Footer
        ========================= */

        footer {
            max-width: 1180px;
            margin: auto;

            padding: 70px 35px 45px;
        }

        .footer-inner {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
        }

        .footer-brand {
            color: #777;

            font-size: 15px;
            line-height: 1.8;
        }

        .footer-brand strong {
            color: #444;

            font-size: 18px;
            font-weight: 300;
        }

        .footer-nav {
            display: flex;
            gap: 28px;
        }

        .footer-nav a {
            color: #777;
            font-size: 14px;

            transition: color 0.25s ease;
        }

        .footer-nav a:hover {
            color: #26878c;
        }

        .copyright {
            margin-top: 55px;

            color: #999;

            font-size: 12px;
        }

/* ========================================
   Brand
   ======================================== */

.brand {
    display: flex;
    align-items: center;
    min-width: 0;
}

.brand .logo-placeholder {
    flex: 0 0 auto;
}

.brand-text {
    display: flex;
    flex-direction: column;
    justify-content: center;

    margin-left: 12px;
    line-height: 1.2;
}

.brand-name {
    color: #444;
    font-size: 16px;
    font-weight: 400;
    white-space: nowrap;
}

.brand-school {
    margin-top: 3px;

    color: #999;
    font-size: 10px;
    font-weight: 300;

    white-space: nowrap;
}

/* ========================================
   Mobile Navigation
   ======================================== */

.mobile-menu-button {
    display: none;
}

.mobile-menu-overlay {
    display: none;
}


@media (max-width: 700px) {

    /* ==============================
       固定顶部栏
       ============================== */

    .header {
        position: fixed;

        top: 0;
        left: 0;
        right: 0;

        z-index: 2000;

        height: 64px;

        background: rgba(245, 246, 246, .94);

        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);

        border-bottom: 1px solid rgba(0, 0, 0, .08);
    }

    .header-inner {
        width: 100%;
        height: 64px;

        padding: 0 20px;

        display: flex;
        align-items: center;
        justify-content: space-between;
    }


    /* ==============================
       Logo
       ============================== */

    .brand {
        min-width: 0;
        height: 100%;
    }

    .brand .logo-placeholder {
        width: 34px;
        height: 34px;
        flex: 0 0 34px;
    }

    .brand .logo-placeholder img {
        width: 34px;
        height: 34px;
        object-fit: contain;
    }

    .brand-text {
        margin-left: 9px;
    }

    .brand-name {
        font-size: 15px;
        line-height: 1.25;
    }

    .brand-school {
        margin-top: 2px;

        font-size: 9px;
        line-height: 1.2;

        color: #999;
    }


    /* ==============================
       汉堡按钮
       ============================== */

    .mobile-menu-button {
        position: relative;
        z-index: 2004;

        display: flex;

        width: 36px;
        height: 36px;

        padding: 0;
        margin: 0;

        border: 0;
        outline: none;

        background: transparent;

        align-items: center;
        justify-content: center;

        flex-direction: column;
        gap: 6px;

        cursor: pointer;

        -webkit-tap-highlight-color: transparent;
    }

    .mobile-menu-button span {
        display: block;

        width: 19px;
        height: 1px;

        background: #444;

        transition:
            transform .28s cubic-bezier(.4, 0, .2, 1),
            opacity .2s ease,
            background-color .2s ease;
    }

    .mobile-menu-button:hover span {
        background: #26878c;
    }

    .mobile-menu-button.is-open span:first-child {
        transform: translateY(3.5px) rotate(45deg);
    }

    .mobile-menu-button.is-open span:last-child {
        transform: translateY(-3.5px) rotate(-45deg);
    }

    .mobile-menu-button.is-open span {
        background: #444;
    }


    /* ==============================
       遮罩
       ============================== */

    .mobile-menu-overlay {
        position: fixed;

        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;

        z-index: 1990;

        display: block;

        background: rgba(0, 0, 0, .38);

        opacity: 0;
        visibility: hidden;

        transition:
            opacity .28s ease,
            visibility .28s ease;
    }

    .mobile-menu-overlay.is-visible {
        opacity: 1;
        visibility: visible;
    }


    /* ==============================
       展开菜单
       ============================== */

    .nav {
        position: fixed;

        top: 64px;
        left: 0;
        right: 0;

        z-index: 2003;

        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;

        box-sizing: border-box;

        padding: 0 24px;

        background: rgba(245, 246, 246, .98);

        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);

        border: none;

        max-height: 0;

        overflow: hidden;

        opacity: 0;
        visibility: hidden;

        transform: translateY(-6px);

        transition:
            max-height .3s cubic-bezier(.4, 0, .2, 1),
            opacity .2s ease,
            transform .3s cubic-bezier(.4, 0, .2, 1),
            visibility .3s;
    }

    .nav.is-open {
        max-height: 270px;

        padding-top: 5px;
        padding-bottom: 8px;

        opacity: 1;
        visibility: visible;

        transform: translateY(0);
    }


    /* ==============================
       菜单文字
       ============================== */

    .nav a {
        display: block;

        width: 100%;

        padding: 8px 0;

        color: #444;

        font-size: 15px;
        line-height: 1.35;

        text-align: center;

        border: none;

        transition: color .2s ease;
    }

    .nav a:hover {
        color: #26878c;
    }

    .nav a {
        display: block;
        width: 100%;
        padding: 8px 0;
        color: #444;
        font-size: 15px;
        line-height: 1.35;
        text-align: center;

        border: none;
        border-bottom: none;
        text-decoration: none;
        box-shadow: none;

        transition: color .2s ease;
    }

    .nav a:hover {
        color: #26878c;
        border-bottom: none;
        text-decoration: none;
        box-shadow: none;
    }

    .nav a::before,
    .nav a::after {
        display: none !important;
    }
}