/* ============================================================
   内页通用样式（产品/品牌故事/场景/报告/服务/动态/关于）
   ============================================================ */

/* ---------- 筛选标签 ---------- */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.filter-tabs li a {
    display: inline-block;
    padding: 10px 24px;
    border: 1px solid var(--c-line);
    border-radius: 999px;
    color: var(--c-text-soft);
    font-size: 14px;
    font-weight: 500;
    transition: all .25s;
}
.filter-tabs li.active a,
.filter-tabs li a:hover {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: var(--c-white);
}

/* ---------- 产品详情布局 ---------- */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
}
.product-detail--reverse .product-gallery { order: 2; }
.product-detail--reverse .product-info-detail { order: 1; }

.product-gallery { position: relative; }
.product-main-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.product-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    background: var(--c-accent);
    color: var(--c-white);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}
.product-badge--soon { background: #b8860b; }
.product-badge--plan { background: #555; }

.product-info-detail h2 {
    font-size: clamp(28px, 3.5vw, 48px);
    margin-bottom: 14px;
}
.product-tagline-detail {
    font-family: var(--font-head);
    font-size: clamp(20px, 2vw, 30px);
    color: var(--c-accent-2);
    margin-bottom: 28px;
}

.product-features-list { margin-bottom: 32px; }
.product-features-list h4 {
    font-size: 16px;
    color: var(--c-text-mute);
    margin-bottom: 16px;
    letter-spacing: .05em;
}
.product-features-list ul li {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--c-line);
}
.product-features-list ul li strong {
    color: var(--c-text);
    font-family: var(--font-head);
    font-size: 16px;
}
.product-features-list ul li span {
    color: var(--c-text-soft);
    font-size: 15px;
}

.product-params {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}
.param {
    padding: 20px 16px;
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    text-align: center;
}
.param-label {
    display: block;
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 8px;
}
.param-value {
    display: block;
    font-family: var(--font-head);
    font-size: clamp(18px, 1.8vw, 24px);
    color: var(--c-text);
}

.product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.coming-soon {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border: 2px dashed var(--c-line);
    border-radius: var(--radius);
    color: var(--c-text-mute);
    font-family: var(--font-head);
    font-size: 16px;
}

/* ---------- 状态标签 ---------- */
.status-on { color: var(--c-accent-2); font-weight: 600; }
.status-soon { color: #e8bf69; font-weight: 600; }
.status-plan { color: var(--c-text-mute); }

/* ---------- 时间轴 ---------- */
.timeline {
    position: relative;
    max-width: 900px;
    margin-inline: auto;
}
.timeline::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 2px;
    background: var(--c-line);
    transform: translateX(-50%);
}
.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 40px 28px 0;
}
.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 28px 40px;
}
.timeline-item::after {
    content: "";
    position: absolute;
    right: -9px;
    top: 6px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--c-accent);
    border: 4px solid var(--c-bg);
    z-index: 2;
}
.timeline-item:nth-child(even)::after {
    right: auto;
    left: -9px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-year {
    font-family: var(--font-head);
    font-size: clamp(22px, 2.4vw, 32px);
    color: var(--c-accent-2);
    margin-bottom: 8px;
}
.timeline-content {
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}
.timeline-content h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--c-text);
}
.timeline-content p {
    color: var(--c-text-soft);
    font-size: 14px;
    margin: 0;
}

/* ---------- 价值观卡片 ---------- */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-card {
    padding: clamp(22px, 2vw, 30px) 22px;
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform .3s, border-color .3s;
}
.value-card:hover { transform: translateY(-4px); border-color: var(--c-accent); }
.value-char {
    font-family: var(--font-head);
    font-size: clamp(48px, 5vw, 72px);
    color: var(--c-accent);
    line-height: 1;
    margin-bottom: 20px;
}
.value-card h4 {
    font-size: 20px;
    margin-bottom: 12px;
}
.value-card p {
    color: var(--c-text-soft);
    font-size: 14px;
    margin: 0;
}

/* ---------- 图文区块 ---------- */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
}
.feature-block--reverse .feature-img { order: 2; }
.feature-block + .feature-block { margin-top: clamp(60px, 7vw, 110px); }
.feature-img img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.feature-text h3 {
    font-size: clamp(24px, 3vw, 40px);
    margin-bottom: 20px;
}
.feature-text p {
    color: var(--c-text-soft);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 16px;
}

/* ---------- 场景卡片网格 ---------- */
.scene-list .scene-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
    padding: clamp(28px, 3vw, 44px) 0;
    border-bottom: 1px solid var(--c-line);
}
.scene-list .scene-item:last-child { border-bottom: 0; }
.scene-list .scene-item:nth-child(even) .scene-img { order: 2; }
.scene-img img {
    width: 100%;
    border-radius: var(--radius-lg);
}
.scene-text h3 {
    font-size: clamp(24px, 2.8vw, 36px);
    margin-bottom: 16px;
}
.scene-text .scene-pain {
    color: var(--c-text-mute);
    font-size: 14px;
    margin-bottom: 20px;
    padding: 10px 16px;
    background: rgba(255,255,255,.04);
    border-left: 3px solid var(--c-accent);
    border-radius: 4px;
}
.scene-text p {
    color: var(--c-text-soft);
    line-height: 1.85;
}
.scene-product-tag {
    display: inline-block;
    margin-top: 20px;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(45,125,110,.15);
    color: var(--c-accent-2);
    font-size: 13px;
    font-weight: 600;
}

/* ---------- 验证清单 ---------- */
.verify-list {
    display: grid;
    gap: 16px;
    max-width: 900px;
    margin-inline: auto;
}
.verify-item {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 24px 28px;
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: border-color .25s;
}
.verify-item:hover { border-color: var(--c-accent); }
.verify-claim { font-family: var(--font-head); font-size: 18px; color: var(--c-text); }
.verify-method { color: var(--c-text-soft); font-size: 15px; }
.verify-link {
    white-space: nowrap;
    color: var(--c-accent-2);
    font-size: 14px;
    font-weight: 600;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list {
    max-width: 800px;
    margin-inline: auto;
}
.faq-item {
    border-bottom: 1px solid var(--c-line);
}
.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 22px 0;
    background: transparent;
    border: 0;
    text-align: left;
    color: var(--c-text);
    font-family: var(--font-head);
    font-size: clamp(16px, 1.4vw, 19px);
    cursor: pointer;
}
.faq-q::after {
    content: "+";
    font-size: 24px;
    color: var(--c-accent-2);
    transition: transform .3s;
    flex-shrink: 0;
}
.faq-item.is-open .faq-q::after { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}
.faq-item.is-open .faq-a { max-height: 400px; }
.faq-a-inner {
    padding: 0 0 22px;
    color: var(--c-text-soft);
    font-size: 15px;
    line-height: 1.85;
}

/* ---------- 新闻卡片 ---------- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform .3s, border-color .3s;
}
.news-card:hover { transform: translateY(-4px); border-color: var(--c-accent); }
.news-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.news-body { padding: 24px 22px 28px; }
.news-date {
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 12px;
}
.news-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.4;
    color: var(--c-text);
}
.news-card p {
    color: var(--c-text-soft);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.7;
}
.news-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(45,125,110,.15);
    color: var(--c-accent-2);
    font-size: 12px;
    font-weight: 600;
}

/* ---------- 联系表单 ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(32px, 5vw, 64px);
}
.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}
.contact-info-item strong {
    display: block;
    font-family: var(--font-head);
    color: var(--c-white);
    font-size: 16px;
    margin-bottom: 4px;
}
.contact-info-item span {
    color: var(--c-text-soft);
    font-size: 15px;
}
.visit-form {
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    padding: clamp(20px, 2vw, 28px);
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--c-text-soft);
    font-size: 14px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--c-bg);
    border: 1px solid var(--c-line);
    border-radius: 8px;
    color: var(--c-text);
    font-family: var(--font-body);
    font-size: 15px;
    transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-accent);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ---------- 产品列表卡片 ---------- */
.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.product-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--c-bg-card);
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: visible;
    transition: transform .3s, border-color .3s, box-shadow .3s;
}
.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-accent);
    box-shadow: 0 20px 50px rgba(0,0,0,.12);
}
.product-card__img {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.product-card__img img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform .4s;
}
.product-card:hover .product-card__img img { transform: scale(1.05); }
.product-card__badge {
    position: absolute;
    top: 16px; left: 16px;
    padding: 5px 14px;
    border-radius: 999px;
    background: var(--c-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
}
.product-card__badge--soon { background: #b8860b; }
.product-card__badge--plan { background: #888; }
.product-card__body {
    padding: 28px 26px 30px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.product-card__series {
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 10px;
}
.product-card__body h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--c-text);
}
.product-card__tagline {
    font-family: var(--font-head);
    color: var(--c-accent);
    font-size: 17px;
    margin-bottom: 10px;
}
.product-card__feat {
    color: var(--c-text-soft);
    font-size: 14px;
    margin-bottom: 20px;
}
.product-card__params {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    padding: 16px 0;
    border-top: 1px solid var(--c-line);
    border-bottom: 1px solid var(--c-line);
    margin-bottom: 20px;
}
.product-card__params span {
    color: var(--c-text-mute);
    font-size: 13px;
}
.product-card__params strong {
    color: var(--c-accent);
    font-family: var(--font-head);
}
.product-card__link {
    margin-top: auto;
    color: var(--c-accent);
    font-size: 15px;
    font-weight: 600;
}
.product-card:hover .product-card__link { color: var(--c-text); }

/* ---------- 滚动渐入(内页) ---------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .7s ease, transform .7s ease;
}
[data-reveal].is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .product-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .product-detail,
    .feature-block,
    .scene-list .scene-item,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .product-detail--reverse .product-gallery,
    .feature-block--reverse .feature-img,
    .scene-list .scene-item:nth-child(even) .scene-img {
        order: 0;
    }
    .timeline::before { left: 20px; }
    .timeline-item,
    .timeline-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 40px 50px;
    }
    .timeline-item::after,
    .timeline-item:nth-child(even)::after {
        left: 11px;
        right: auto;
    }
    .product-features-list ul li { grid-template-columns: 1fr; gap: 4px; }
    .verify-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 640px) {
    .values-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .product-list { grid-template-columns: 1fr; }
    .product-params { grid-template-columns: 1fr; }
}

/* 产品卡片标题换行 + 大品牌符号 */
.product-card__title {
    position: relative;
    width: 100%;
    line-height: 1.15;
}
/* 大品牌符号: 相对卡片body定位, 约束在展示模块内 */
.product-card__title-icon {
    position: absolute;
    bottom: 0;
    right: 0;
    height: 8em;
    width: auto;
    opacity: .9;
    pointer-events: none;
    user-select: none;
    object-fit: contain;
    z-index: 3;
}