/* [思路梳理]：1. FAQ 展开状态采用互斥式手风琴，点击新面板时自动收起上一个。2. 展开动效由 JS 设置 max-height，CSS 负责 transition 过渡。3. 每个 FAQ 的 button 占满整行并设置 cursor:pointer，箭头随 is-open 状态旋转。 */

@font-face {
    font-family: 'Fira Sans';
    src: url('../fonts/Fira sans/FiraSans-Regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
}
@font-face {
    font-family: 'Fira Sans';
    src: url('../fonts/Fira sans/FiraSans-Bold.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
}
@font-face {
    font-family: 'Roboto';
    src: url('../fonts/roboto/Roboto-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

:root {
    --internship-orange: #f37022;
    --internship-text: #222b35;
    --internship-muted: #5d6670;
    --internship-line: #d7dbe0;
}

.internship-page {
    overflow-x: hidden;
    background: #fff;
    color: var(--internship-text);
    font-family: 'Roboto', 'Fira Sans', Arial, sans-serif;
}

.internship-section-inner {
    width: min(1400px, calc(100% - 64px));
    margin: 0 auto;
}

.internship-hero {
    position: relative;
    min-height: 75vh;
    min-height: 75dvh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.internship-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.08) 0%, rgba(0, 0, 0, 0.45) 100%);
}

.internship-hero-inner {
    position: relative;
    z-index: 1;
    width: min(1400px, calc(100% - 64px));
    margin: 0 auto;
    padding: 0 0 clamp(40px, 8vh, 86px);
}

.internship-hero h1 {
    max-width: 980px;
    margin: 0;
    color: #fff;
    font-family: 'Fira Sans', Arial, sans-serif;
    font-size: clamp(58px, 8vw, 112px);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: 0;
}

.internship-intro {
    padding: 38px 0 76px;
    background: #fff;
}

.internship-intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(38px, 5vw, 72px);
    align-items: start;
}

.internship-intro-media {
    margin: 0;
    overflow: hidden;
    border-radius: 8px;
    aspect-ratio: 1.58 / 1;
    background: #f4f4f2;
}

.internship-intro-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.internship-intro-copy {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    justify-content: space-between;
    padding: 2px 0 0;
}

.internship-intro-copy p {
    margin: 0 0 24px;
    color: #0f141a;
    font-size: clamp(14px, 1.15vw, 14px);
    line-height: 1.5;
}

.internship-cta {
    align-self: flex-start;
    min-height: 38px;
    padding: 8px 24px;
    border: 1px solid var(--internship-orange);
    border-radius: 999px;
    background: #fff;
    color: var(--internship-orange);
    font-size: clamp(16px, 1.25vw, 20px);
    line-height: 1;
    text-decoration: none;
    transition: background 0.24s ease, color 0.24s ease, transform 0.24s ease;
}

.internship-cta:hover,
.internship-cta:focus-visible {
    background: var(--internship-orange);
    color: #fff;
    transform: translateY(-1px);
}

.internship-faq-section {
    padding: 0 0 82px;
    background: #fff;
}

.internship-faq-list {
    border-top: 1px solid var(--internship-line);
}

.internship-faq-item {
    border-bottom: 1px solid var(--internship-line);
}

.internship-faq-question {
    width: 100%;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 0 0 0 6px;
    border: 0;
    background: transparent;
    color: var(--internship-text);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.internship-faq-title {
    font-size: clamp(18px, 1.4vw, 22px);
    line-height: 1.25;
}

.internship-faq-arrow {
    width: 10px;
    height: 10px;
    margin-right: 2px;
    border-right: 1px solid #b8bec4;
    border-bottom: 1px solid #b8bec4;
    transform: rotate(45deg);
    transition: transform 0.24s ease, border-color 0.24s ease;
    flex: 0 0 auto;
}

.internship-faq-item.is-open .internship-faq-arrow {
    border-color: var(--internship-orange);
    transform: rotate(225deg);
}

.internship-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
}

.internship-faq-answer p {
    max-width: 780px;
    margin: 0;
    padding: 3% ;
    color: var(--internship-muted);
    font-size: 16px;
    line-height: 1.55;
}

@media (max-width: 1024px) {
    .internship-hero {
        min-height: 68vh;
        min-height: 68dvh;
    }

    .internship-intro-grid {
        gap: 36px;
    }

    .internship-cta {
        margin-top: 36px;
    }
}

@media (max-width: 767px) {
    .internship-section-inner,
    .internship-hero-inner {
        width: calc(100% - 40px);
    }

    .internship-hero {
        box-sizing: border-box;
        height: 76.4045vw;
        min-height: 76.4045vw;
        max-height: 76.4045vw;
    }

    .internship-hero h1 {
        font-size: clamp(28px, 7.64vw, 40px);
        line-height: 0.98;
    }

    .internship-intro {
        padding: 28px 0 56px;
    }

    .internship-intro-grid {
        grid-template-columns: 1fr;
    }

    .internship-intro-copy p {
        font-size: clamp(12px, 3.17vw, 16px);
        line-height: 1.35;
    }

    .internship-cta {
        margin-top: 18px;
        font-size: clamp(12px, 3.17vw, 16px);
    }

    .internship-faq-section {
        padding-bottom: 60px;
    }

    .internship-faq-question {
        min-height: 48px;
        padding-left: 0;
    }

    .internship-faq-title {
        font-size: clamp(12px, 3.17vw, 16px);
    }

    .internship-faq-answer p {
        padding: 0 28px 18px 0;
        font-size: clamp(12px, 3.17vw, 16px);
        line-height: 1.35;
    }
}