/**
 * AI 品牌优化服务页样式
 * AI Brand Service Page Stylesheet
 *
 * 主题配色：白底 #ffffff / 深棕文字 #2b271b / 金色点缀 #f5c12e
 * 品牌主色通过 --brand / --brand-dark 变量注入（由各品牌模板设定）
 *
 * @package RiPro-V5
 */

/* ============ 主容器与变量 ============ */
.abp-main {
    --abp-bg: #ffffff;
    --abp-text: #2b271b;
    --abp-text-soft: #6b6353;
    --abp-text-muted: #9a917e;
    --abp-gold: #f5c12e;
    --abp-gold-dark: #d9a815;
    --abp-gold-light: #fff6d1;
    --abp-border: #ece8d9;
    background: var(--abp-bg);
    color: var(--abp-text);
    overflow-x: hidden;
}

.abp-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.abp-main figure {
    margin: 0;
}

.abp-main ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.abp-main img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============ 区块标题 ============ */
.abp-sec-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
}

.abp-sec-sub {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--brand);
    background: color-mix(in srgb, var(--brand) 10%, #ffffff);
    border: 1px solid color-mix(in srgb, var(--brand) 25%, #ece8d9);
    padding: 6px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.abp-sec-title {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 800;
    margin: 0;
    color: var(--abp-text);
    letter-spacing: -0.5px;
}

@media (max-width: 768px) {
    .abp-sec-head {
        margin-bottom: 36px;
    }
    .abp-sec-title {
        font-size: 26px;
    }
}

/* ============ Banner 区 ============ */
.abp-banner {
    position: relative;
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    background-size: cover;
    background-position: center;
    color: #ffffff;
    overflow: hidden;
    margin-top: -102px;
}

.abp-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.25) 100%);
    pointer-events: none;
}

.abp-banner-inner {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.abp-banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(6px);
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.abp-banner-logo img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    margin: 0 auto 20px;
    border-radius: 16px;
}

.abp-banner-sub {
    display: block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0.85;
    margin-bottom: 14px;
}

.abp-banner-title {
    font-size: 24px;
    line-height: 1.2;
    font-weight: 800;
    margin: 0 0 20px;
    letter-spacing: -0.8px;
}

.abp-banner-desc {
    font-size: 17px;
    line-height: 1.7;
    opacity: 0.92;
    margin: 0 auto 32px;
    max-width: 640px;
}

.abp-banner-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: var(--brand-dark);
    font-size: 15px;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.abp-banner-btn:hover {
    background: var(--abp-gold-light);
    color: var(--abp-gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
}

@media (max-width: 768px) {
    .abp-banner {
        padding: 130px 0 70px;
    }
    .abp-banner-title {
        font-size: 30px;
    }
    .abp-banner-desc {
        font-size: 15px;
    }
    .abp-banner-logo img {
        width: 56px;
        height: 56px;
    }
}

/* ============ 品牌介绍区 ============ */
.abp-intro {
    padding: 90px 0;
}

.abp-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.abp-intro-content .abp-sec-sub {
    margin-bottom: 14px;
}

.abp-intro-content .abp-sec-title {
    text-align: left;
}

.abp-intro-desc {
    font-size: 16px;
    line-height: 1.85;
    color: var(--abp-text-soft);
    margin: 20px 0 28px;
}

.abp-intro-list {
    display: grid;
    gap: 16px;
}

.abp-intro-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.abp-intro-check {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.abp-intro-list strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    color: var(--abp-text);
    margin-bottom: 2px;
}

.abp-intro-list em {
    font-style: normal;
    font-size: 13.5px;
    color: var(--abp-text-muted);
    line-height: 1.6;
}

.abp-intro-thumb {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(43, 39, 27, 0.12);
}

.abp-intro-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 992px) {
    .abp-intro-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .abp-intro {
        padding: 60px 0;
    }
    .abp-intro-desc {
        font-size: 15px;
    }
}

/* ============ 服务特性区 ============ */
.abp-features {
    padding: 90px 0;
    background: #faf8f2;
}

.abp-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.abp-feature-card {
    background: #ffffff;
    border: 1px solid var(--abp-border);
    border-radius: 16px;
    padding: 36px 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.abp-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 44px rgba(43, 39, 27, 0.1);
    border-color: color-mix(in srgb, var(--brand) 40%, var(--abp-border));
}

.abp-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 30%, transparent);
}

.abp-feature-icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.abp-feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--abp-text);
}

.abp-feature-card p {
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--abp-text-soft);
    margin: 0;
}

@media (max-width: 992px) {
    .abp-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .abp-features {
        padding: 60px 0;
    }
    .abp-features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .abp-feature-card {
        padding: 28px 22px;
    }
}

/* ============ 优化流程区 ============ */
.abp-process {
    padding: 90px 0;
}

.abp-process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: abp-step;
}

.abp-process-item {
    position: relative;
    padding: 36px 24px 28px;
    border-radius: 16px;
    background: #ffffff;
    border: 1px solid var(--abp-border);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.abp-process-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(43, 39, 27, 0.1);
}

.abp-process-num {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--brand) 12%, #ffffff);
    color: var(--brand-dark);
    font-size: 22px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border: 2px solid color-mix(in srgb, var(--brand) 30%, transparent);
}

.abp-process-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--abp-text);
}

.abp-process-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--abp-text-soft);
    margin: 0;
}

/* 流程连接线（桌面端） */
.abp-process-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 62px;
    right: -16px;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--brand) 0%, transparent 100%);
    opacity: 0.4;
}

@media (max-width: 992px) {
    .abp-process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .abp-process {
        padding: 60px 0;
    }
    .abp-process-grid {
        grid-template-columns: 1fr;
    }
    .abp-process-item:not(:last-child)::after {
        display: none;
    }
}

/* ============ 常见问题区 ============ */
.abp-faq {
    padding: 90px 0;
    background: #faf8f2;
}

.abp-faq-container {
    max-width: 820px;
}

.abp-faq-list {
    display: grid;
    gap: 14px;
}

.abp-faq-item {
    background: #ffffff;
    border: 1px solid var(--abp-border);
    border-radius: 14px;
    overflow: hidden;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.abp-faq-item[open] {
    box-shadow: 0 8px 28px rgba(43, 39, 27, 0.08);
    border-color: color-mix(in srgb, var(--brand) 35%, var(--abp-border));
}

.abp-faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--abp-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

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

.abp-faq-item summary:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: -2px;
}

.abp-faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--brand) 12%, #ffffff);
    color: var(--brand-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: transform 0.25s ease;
}

.abp-faq-item[open] .abp-faq-icon {
    transform: rotate(45deg);
}

.abp-faq-answer {
    padding: 0 24px 22px;
    font-size: 14.5px;
    line-height: 1.8;
    color: var(--abp-text-soft);
    animation: abp-faq-open 0.3s ease;
}

@keyframes abp-faq-open {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 576px) {
    .abp-faq {
        padding: 60px 0;
    }
    .abp-faq-item summary {
        padding: 16px 18px;
        font-size: 15px;
    }
    .abp-faq-answer {
        padding: 0 18px 18px;
        font-size: 14px;
    }
}

/* ============ CTA 行动召唤区 ============ */
.abp-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.abp-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.abp-cta-title {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 8px;
    letter-spacing: -0.3px;
}

.abp-cta-desc {
    font-size: 16px;
    opacity: 0.92;
    margin: 0;
    max-width: 560px;
    line-height: 1.6;
}

.abp-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: var(--brand-dark);
    font-size: 15px;
    font-weight: 700;
    padding: 16px 36px;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    flex-shrink: 0;
}

.abp-cta-btn:hover {
    background: var(--abp-gold);
    color: var(--abp-text);
    transform: translateY(-2px);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
}

@media (max-width: 768px) {
    .abp-cta {
        padding: 60px 0;
    }
    .abp-cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    .abp-cta-title {
        font-size: 23px;
    }
    .abp-cta-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============ 无障碍 ============ */
@media (prefers-reduced-motion: reduce) {
    .abp-feature-card,
    .abp-process-item,
    .abp-faq-item,
    .abp-banner-btn,
    .abp-cta-btn {
        transition: none;
        animation: none;
    }
}