/* ================================
   项目详情页
================================ */

.project-detail-page {
    background: var(--color-bg);
}


/* ================================
   项目主视觉
================================ */

.project-hero {
    position: relative;
    min-height: 900px;
    display: flex;
    align-items: flex-end;
    color: #ffffff;
    background: var(--color-dark);
    overflow: hidden;
}

.project-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.project-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-hero-mask {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        linear-gradient(90deg,
            rgba(7, 8, 12, 0.78) 0%,
            rgba(7, 8, 12, 0.28) 52%,
            rgba(7, 8, 12, 0.5) 100%),
        linear-gradient(180deg,
            rgba(7, 8, 12, 0.18) 0%,
            rgba(7, 8, 12, 0.78) 100%);
}

.project-hero-inner {
    position: relative;
    z-index: 3;
    width: min(calc(100% - 64px), 1440px);
    margin: 0 auto;
    padding-bottom: 96px;
}


.project-hero-content {
    max-width: 760px;
}

.project-kicker {
    color: var(--color-primary-light);
    font-size: var(--font-size-xs);
    line-height: 1;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.project-title {
    margin-top: 18px;
    color: #ffffff;
    font-size: clamp(38px, 5vw, 68px);
    line-height: 1.12;
    font-weight: 500;
    letter-spacing: 0.04em;
}

.project-desc {
    max-width: 680px;
    margin-top: 22px;
    color: rgba(255, 255, 255, 0.82);
    font-size: var(--font-size-lg);
    line-height: 1.85;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.project-tags span {
    min-height: 30px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    color: #ffffff;
    font-size: var(--font-size-xs);
    line-height: 1;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.24);
    backdrop-filter: blur(6px);
}



/* ================================
   页内导航
================================ */

.project-anchor-nav {
    position: sticky;
    top: var(--header-height);
    z-index: 50;
    display: flex;
    justify-content: center;
    gap: 2px;
    padding: 0 var(--space-4);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    overflow-x: auto;
    overscroll-behavior-x: contain;
}

/* 头部导航隐藏时，页内导航吸附到屏幕顶部 */
body.site-header-hidden .project-anchor-nav {
    top: 0;
}

.project-anchor-nav::-webkit-scrollbar {
    display: none;
}

.project-anchor-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 18px 20px;
    color: var(--color-text-2);
    font-size: var(--font-size-sm);
    line-height: 1;
    white-space: nowrap;
    transition:
        color var(--transition-fast),
        background var(--transition-fast);
}

.project-anchor-nav a:hover,
.project-anchor-nav a.is-active {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
}


/* ================================
   项目摘要
================================ */

.project-summary-section {
    padding: 42px 0;
    background: var(--color-bg-soft);
}

.project-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.project-summary-card {
    padding: 24px;
    background: #ffffff;
    border: 1px solid var(--color-border);
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-fast);
}

.project-summary-card:hover {
    transform: translateY(-2px);
    border-color: rgba(197, 161, 132, 0.32);
    box-shadow: var(--shadow-sm);
}

.project-summary-card span {
    color: var(--color-text-3);
    font-size: var(--font-size-xs);
    line-height: 1;
}

.project-summary-card strong {
    display: block;
    margin-top: 10px;
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.35;
}

.project-summary-card p {
    margin-top: 8px;
    color: var(--color-text-2);
    font-size: var(--font-size-xs);
    line-height: 1.75;
}


/* ================================
   通用区块
================================ */

.project-section {
    padding: 120px 0;
}

.project-soft-section {
    background: var(--color-bg-soft);
}

.project-two-col {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 80px;
}

.project-section-heading h2,
.project-tech-content h2 {
    margin-top: 14px;
    color: var(--color-text);
    font-size: var(--font-size-3xl);
    line-height: 1.22;
    font-weight: 500;
}

.project-rich-text {
    color: var(--color-text-2);
    font-size: var(--font-size-md);
    line-height: 1.95;
}

.project-rich-text p+p {
    margin-top: 18px;
}


/* ================================
   设备技术
================================ */

.project-tech-section {
    padding: 120px 0;
    background: var(--color-bg-soft);
}

.project-tech-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 72px;
}

.project-tech-image {
    /* aspect-ratio: 1 / 1; */
    width: 400px;
    height: 400px;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid var(--color-border);
}

.project-tech-image img,
.project-tech-banner img {
    width: 100%;
    height: 100%;
    object-fit: center;
    display: block;
}

.project-tech-content {
    color: var(--color-text-2);
}

.project-tech-content p {
    margin-top: 22px;
    font-size: var(--font-size-md);
    line-height: 1.95;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.project-tech-tags span {
    min-height: 32px;
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    color: var(--color-primary-dark);
    font-size: var(--font-size-xs);
    line-height: 1;
    background: #ffffff;
    border: 1px solid rgba(197, 161, 132, 0.34);
}

.project-tech-banner {
    margin-top: 56px;
    /* aspect-ratio: 16 / 5; */
    width: 100%;
    height: auto;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid var(--color-border);
}


/* ================================
   改善方向参考
================================ */

.project-compare-section {
    padding: 120px 0;
    background: var(--color-bg);
}

.project-compare-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.project-compare-card {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-soft);
}

.project-compare-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition:
        transform var(--transition-slow),
        filter var(--transition-slow);
}

.project-compare-card:hover img {
    transform: scale(1.04);
    filter: brightness(0.92);
}

.project-compare-card figcaption {
    position: absolute;
    left: 18px;
    bottom: 16px;
    z-index: 2;
    min-width: 68px;
    padding: 7px 12px;
    color: #ffffff;
    font-size: var(--font-size-sm);
    line-height: 1;
    text-align: center;
    background: rgba(17, 18, 24, 0.68);
    backdrop-filter: blur(6px);
}


/* ================================
   适合人群
================================ */

.project-feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-top: 64px;
}

.project-feature-card {
    padding: 28px 24px;
    background: #ffffff;
    border: 1px solid var(--color-border);
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-fast);
}

.project-feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(197, 161, 132, 0.32);
    box-shadow: var(--shadow-sm);
}

.project-feature-card span {
    color: var(--color-primary-dark);
    font-size: var(--font-size-sm);
    line-height: 1;
    letter-spacing: 0.12em;
}

.project-feature-card h3 {
    margin-top: 18px;
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.35;
}

.project-feature-card p {
    margin-top: 12px;
    color: var(--color-text-2);
    font-size: var(--font-size-sm);
    line-height: 1.8;
}


/* ================================
   治疗流程
================================ */

.project-process-list {
    display: grid;
    gap: 14px;
    margin-top: 64px;
}

.project-process-item {
    display: grid;
    grid-template-columns: 120px 180px 1fr;
    align-items: center;
    gap: 28px;
    padding: 24px 28px;
    background: #ffffff;
    border: 1px solid var(--color-border);
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-fast);
}

.project-process-item:hover {
    transform: translateY(-2px);
    border-color: rgba(197, 161, 132, 0.32);
    box-shadow: var(--shadow-sm);
}

.project-process-item span {
    color: var(--color-primary-dark);
    font-size: var(--font-size-xs);
    line-height: 1;
    letter-spacing: 0.16em;
}

.project-process-item h3 {
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.35;
}

.project-process-item p {
    color: var(--color-text-2);
    font-size: var(--font-size-sm);
    line-height: 1.75;
}


/* ================================
   项目案例
================================ */

.project-case-section {
    padding: 120px 0;
    background: var(--color-dark);
    overflow: hidden;
}

.project-case-section .section-title {
    color: #ffffff;
}

.project-case-section .section-title-text {
    color: var(--color-text-light-2);
}

.project-case-slider {
    width: 100%;
    margin-top: 72px;
}

.project-case-stage {
    position: relative;
    width: 100%;
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 左右切换按钮 */
.project-case-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 54px;
    height: 54px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.26);
    border: 1px solid rgba(255, 255, 255, 0.24);
    transform: translateY(-50%);
    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        transform var(--transition-fast);
}

.project-case-arrow:hover {
    background: rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.46);
}

.project-case-arrow-prev {
    left: max(8px, calc(50% - 640px));
}

.project-case-arrow-next {
    right: max(8px, calc(50% - 640px));
}

.project-case-arrow-icon {
    width: 24px;
    height: 24px;
}

/* 左右预览卡片 */
.project-case-side-card {
    position: absolute;
    top: 50%;
    z-index: 1;
    width: clamp(250px, 23vw, 365px);
    aspect-ratio: 365 / 316;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-50%);
}

.project-case-side-card-left {
    left: max(-10px, calc(50% - 760px));
}

.project-case-side-card-right {
    right: max(-10px, calc(50% - 760px));
}

.project-case-side-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-case-side-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.58);
}

/* 中间主案例 */
.project-case-main-card {
    position: relative;
    z-index: 2;
    width: min(100%, 765px);
    aspect-ratio: 765 / 427;
    overflow: hidden;
    box-shadow: var(--shadow-dark);
}

.project-case-main-link {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    border: 4px solid rgba(255, 255, 255, 0.16);
}

.project-case-main-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition:
        transform var(--transition-slow),
        opacity var(--transition-fast);
}

.project-case-main-link:hover .project-case-main-img {
    transform: scale(1.03);
}

.project-case-main-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg,
            rgba(0, 0, 0, 0.02) 0%,
            rgba(0, 0, 0, 0.06) 60%,
            rgba(0, 0, 0, 0.72) 100%);
}

.project-case-main-meta {
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 24px;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: var(--space-4);
    color: #ffffff;
}

.project-case-main-name {
    font-size: var(--font-size-lg);
    font-weight: 500;
    line-height: 1;
}

.project-case-main-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    line-height: 1;
    transition: color var(--transition-fast);
}

.project-case-main-link:hover .project-case-main-more {
    color: var(--color-primary-light);
}

.project-case-main-more em {
    font-style: normal;
    font-size: 18px;
}

/* 案例指示器 */
.project-case-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 28px;
}

.project-case-dot {
    width: 28px;
    height: 3px;
    background: rgba(255, 255, 255, 0.24);
    transition:
        width var(--transition-fast),
        background var(--transition-fast);
}

.project-case-dot.is-active {
    width: 42px;
    background: var(--color-primary-light);
}

/* ================================
   常见问题
================================ */

.project-faq-list {
    max-width: 1440px;
    margin: 64px auto 0;
    display: grid;
    gap: 12px;
}

.project-faq-item {
    background: #ffffff;
    border: 1px solid var(--color-border);
}

.project-faq-item summary {
    position: relative;
    padding: 22px 56px 22px 24px;
    color: var(--color-text);
    font-size: var(--font-size-md);
    font-weight: 600;
    line-height: 1.45;
    cursor: pointer;
    list-style: none;
}

.project-faq-item summary::-webkit-details-marker {
    display: none;
}

.project-faq-item summary::after {
    content: "+";
    position: absolute;
    right: 24px;
    top: 50%;
    color: var(--color-primary-dark);
    font-size: 22px;
    font-weight: 400;
    line-height: 1;
    transform: translateY(-50%);
}

.project-faq-item[open] summary::after {
    content: "−";
}

.project-faq-item p {
    padding: 0 24px 24px;
    color: var(--color-text-2);
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

/* ================================
   平板适配
================================ */

@media (max-width: 1024px) {
    .project-hero {
        min-height: 640px;
    }

    .project-hero-inner {
        width: calc(100% - 40px);
        padding-bottom: 72px;
    }

    .project-summary-grid,
    .project-feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .project-two-col,
    .project-tech-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }

    .project-section,
    .project-compare-section,
    .project-tech-section {
        padding: 90px 0;
    }

    .project-compare-grid,
    .project-feature-grid,
    .project-process-list,
    .project-faq-list {
        margin-top: 56px;
    }

    /* 项目案例：平板适配 */
    .project-case-section {
        padding: 90px 0;
    }

    .project-case-slider {
        margin-top: 56px;
    }

    .project-case-stage {
        min-height: 470px;
    }

    .project-case-main-card {
        width: min(100%, 680px);
    }

    .project-case-side-card {
        width: 220px;
    }

    .project-case-side-card-left {
        left: max(-18px, calc(50% - 560px));
    }

    .project-case-side-card-right {
        right: max(-18px, calc(50% - 560px));
    }

    .project-case-arrow {
        width: 46px;
        height: 46px;
    }

    .project-case-arrow-prev {
        left: max(0px, calc(50% - 470px));
    }

    .project-case-arrow-next {
        right: max(0px, calc(50% - 470px));
    }
}


/* ================================
   手机适配
================================ */

@media (max-width: 768px) {
    .project-hero {
        min-height: 620px;
    }

    .project-hero-mask {
        background:
            linear-gradient(180deg,
                rgba(7, 8, 12, 0.18) 0%,
                rgba(7, 8, 12, 0.28) 38%,
                rgba(7, 8, 12, 0.86) 100%);
    }

    .project-hero-inner {
        width: calc(100% - 32px);
        padding-bottom: 56px;
    }

    .project-hero-content {
        margin-top: 28px;
    }

    .project-title {
        margin-top: 14px;
        font-size: 34px;
        letter-spacing: 0.03em;
    }

    .project-desc {
        margin-top: 18px;
        font-size: var(--font-size-sm);
        line-height: 1.8;
    }

    .project-tags {
        gap: 8px;
        margin-top: 22px;
    }

    .project-tags span {
        min-height: 28px;
        padding: 0 10px;
    }


    .project-anchor-nav {
        justify-content: flex-start;
        padding: 0 8px;
    }

    .project-anchor-nav a {
        padding: 16px 14px;
        font-size: var(--font-size-xs);
    }

    .project-summary-section {
        padding: 32px 0;
    }

    .project-summary-grid,
    .project-feature-grid,
    .project-compare-grid {
        grid-template-columns: 1fr;
    }

    .project-summary-card {
        padding: 20px;
    }

    .project-section,
    .project-compare-section,
    .project-tech-section{
        padding: 76px 0 84px;
    }

    .project-section-heading h2,
    .project-tech-content h2 {
        font-size: 26px;
    }

    .project-rich-text {
        font-size: var(--font-size-sm);
        line-height: 1.85;
    }

    .project-compare-grid,
    .project-feature-grid,
    .project-process-list,
    .project-faq-list {
        margin-top: 42px;
    }

    .project-compare-card {
        aspect-ratio: 4 / 3;
    }

    .project-feature-card {
        padding: 24px 20px;
    }

    .project-process-item {
        grid-template-columns: 1fr;
        align-items: start;
        gap: 8px;
        padding: 22px;
    }

    .project-process-item h3 {
        margin-top: 4px;
    }

    .project-tech-grid {
        gap: 32px;
    }

    .project-tech-image {
        aspect-ratio: 16 / 10;
    }

    .project-faq-item summary {
        padding: 20px 52px 20px 20px;
        font-size: var(--font-size-sm);
    }

    .project-faq-item summary::after {
        right: 20px;
    }

    .project-faq-item p {
        padding: 0 20px 20px;
        font-size: var(--font-size-xs);
    }


    /* 项目案例：手机适配 */
    .project-case-section {
        padding: 76px 0 84px;
    }

    .project-case-slider {
        margin-top: 42px;
    }

    .project-case-stage {
        min-height: auto;
        display: block;
    }

    .project-case-side-card {
        display: none;
    }

    .project-case-main-card {
        width: 100%;
        aspect-ratio: 4 / 3;
    }

    .project-case-arrow {
        width: 42px;
        height: 42px;
    }

    .project-case-arrow-prev {
        left: 12px;
    }

    .project-case-arrow-next {
        right: 12px;
    }

    .project-case-main-meta {
        left: 16px;
        right: 16px;
        bottom: 14px;
    }

    .project-case-main-name {
        font-size: var(--font-size-md);
    }

    .project-case-main-more {
        font-size: var(--font-size-xs);
    }

    .project-case-dots {
        gap: 8px;
        margin-top: 18px;
    }

    .project-case-dot {
        width: 22px;
        height: 2px;
    }

    .project-case-dot.is-active {
        width: 34px;
    }
}