/* =========================================================
   服务详情页专属样式
   文件：css/fuwu.css
   依赖：css/style.css、css/aboutus.css、css/productslist.css
   ========================================================= */

/* ========== Section 1：左大标题 + CTA / 右图片 ========== */
.fu-hero {
    padding: 80px 20px;
    background: var(--bg-white);
}
.fu-hero-inner {
    max-width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 440px 1fr;
    gap: 64px;
    align-items: center;
}

.fu-hero-en {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #70b52c;
    letter-spacing: 4px;
    margin-bottom: 18px;
}
.fu-hero-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.25;
    letter-spacing: -1px;
    margin-bottom: 12px;
}
.fu-hero-title .accent {
    color: #70b52c;
    position: relative;
}
.fu-hero-title .accent::after {
    content: '';
    position: absolute;
    left: 0; bottom: -4px;
    width: 100%; height: 4px;
    background: linear-gradient(90deg, #70b52c 0%, rgba(112,181,44,0) 100%);
    border-radius: 2px;
}
.fu-hero-sub {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 28px;
    line-height: 1.8;
}
.fu-hero-ctas {
    display: flex; gap: 14px; flex-wrap: wrap;
}
.fu-cta-btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 30px;
    font-size: 15px; font-weight: 500;
    border-radius: 50px;
    cursor: pointer; border: none;
    text-decoration: none;
    transition: all 0.3s ease;
}
.fu-cta-btn--primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(26,95,160,0.35);
}
.fu-cta-btn--primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26,95,160,0.45);
}
.fu-cta-btn--outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}
.fu-cta-btn--outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

/* 右侧主图 */
.fu-hero-img {
    position: relative;
}
.fu-hero-img-main {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 16px;
    background: #e6ebf3 center/cover no-repeat;
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    position: relative;
}
.fu-hero-img-main::before {
    content: '';
    position: absolute; top: -18px; right: -18px;
    width: 120px; height: 120px;
    border: 3px solid #70b52c;
    border-radius: 50%;
    opacity: 0.55;
}
.fu-hero-img-main::after {
    content: '';
    position: absolute; bottom: -24px; left: -24px;
    width: 140px; height: 140px;
    border: 2px solid rgba(26,95,160,0.25);
    border-radius: 50%;
}
.fu-hero-img-caption {
    position: absolute;
    bottom: -28px; right: 40px;
    background: #fff;
    padding: 18px 24px;
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.12);
    display: flex; align-items: center; gap: 14px;
}
.fu-hero-img-caption i {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
}
.fu-hero-img-caption div { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; }
.fu-hero-img-caption strong { display: block; color: var(--text-dark); font-size: 14px; }

/* ========== Section 2：左标题 / 右描述（无竖线） ========== */
.fu-about {
    padding: 80px 20px;
    background: var(--bg-light);
}
.fu-about-inner {
    max-width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 72px;
    align-items: start;
}
.fu-about-left .fu-about-en {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #70b52c;
    letter-spacing: 4px;
    margin-bottom: 18px;
}
.fu-about-left h2 {
    font-size: clamp(28px, 3.2vw, 40px);
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.3;
    letter-spacing: -0.5px;
}
.fu-about-right p {
    font-size: 15px;
    line-height: 2;
    color: #4b5563;
    margin-bottom: 20px;
    text-align: justify;
}
.fu-about-right p:first-of-type { text-indent: 2em; }

/* ========== Section 3：应用场景实况图 ========== */
.fu-scenes {
    padding: 80px 20px;
    background: var(--bg-white);
}
.fu-scenes-inner {
    max-width: var(--container);
    margin: 0 auto;
}
.fu-scenes-header {
    text-align: center;
    margin-bottom: 56px;
}
.fu-scenes-en {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #70b52c;
    letter-spacing: 4px;
    margin-bottom: 14px;
}
.fu-scenes-title {
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 14px;
}
.fu-scenes-sub {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 2 列布局，图文各半交替 */
.fu-scene-list {
    display: flex;
    flex-direction: column;
    gap: 56px;
}
.fu-scene {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.fu-scene--reverse { direction: rtl; }
.fu-scene--reverse > * { direction: ltr; }

.fu-scene-img {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: 16px;
    background: #e6ebf3 center/cover no-repeat;
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(0,0,0,0.08);
}
.fu-scene-img::before {
    content: '';
    position: absolute; top: -18px; right: -18px;
    width: 100px; height: 100px;
    border: 2px solid rgba(112,181,44,0.4);
    border-radius: 50%;
}
.fu-scene--reverse .fu-scene-img::before {
    right: auto; left: -18px; top: auto; bottom: -18px;
}

.fu-scene-text { padding: 8px 0; }
.fu-scene-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: #70b52c;
    letter-spacing: 3px;
    margin-bottom: 14px;
}
.fu-scene-text h3 {
    font-size: clamp(20px, 2.4vw, 28px);
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 14px;
}
.fu-scene-text p {
    font-size: 14.5px;
    line-height: 2;
    color: var(--text-muted);
    margin-bottom: 16px;
}
.fu-scene-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 20px;
}
.fu-scene-points li {
    list-style: none;
    font-size: 13.5px;
    color: #4b5563;
    display: flex; align-items: center; gap: 8px;
}
.fu-scene-points li::before {
    content: '';
    width: 6px; height: 6px;
    background: #70b52c;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ========== Section 4：咨询 CTA ========== */
.fu-cta {
    position: relative;
    padding: 96px 20px;
    background: url('../img/chanpin_bg.jpg') center/cover no-repeat fixed;
    overflow: hidden;
}
.fu-cta::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg,
        rgba(15,30,55,0.88) 0%,
        rgba(26,95,160,0.82) 50%,
        rgba(19,71,120,0.88) 100%);
}
.fu-cta-inner {
    position: relative; z-index: 2;
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    color: #fff;
}
.fu-cta-icon {
    width: 72px; height: 72px;
    background: #70b52c;
    border-radius: 50%;
    margin: 0 auto 28px;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px;
    box-shadow: 0 8px 32px rgba(112,181,44,0.5);
    animation: fuFloat 3s ease-in-out infinite;
}
@keyframes fuFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.fu-cta h2 {
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 14px;
    letter-spacing: -0.3px;
}
.fu-cta-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
    line-height: 1.9;
    margin-bottom: 36px;
}
.fu-cta-buttons {
    display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}
.fu-cta-btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 15px 36px;
    font-size: 15px; font-weight: 600;
    border-radius: 50px;
    cursor: pointer; border: none;
    text-decoration: none;
    transition: all 0.3s ease;
}
.fu-cta-btn--primary {
    background: #70b52c;
    color: #fff;
    box-shadow: 0 6px 24px rgba(112,181,44,0.45);
}
.fu-cta-btn--primary:hover {
    background: #5c9a23;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(112,181,44,0.55);
}
.fu-cta-btn--ghost {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}
.fu-cta-btn--ghost:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
    transform: translateY(-2px);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .fu-hero { padding: 64px 20px; }
    .fu-hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .fu-hero-title { font-size: 40px; }
    .fu-about { padding: 64px 20px; }
    .fu-about-inner { grid-template-columns: 1fr; gap: 32px; }
    .fu-scenes { padding: 64px 20px; }
    .fu-scene { grid-template-columns: 1fr; gap: 28px; }
    .fu-scene--reverse { direction: ltr; }
    .fu-scene-list { gap: 48px; }
}
@media (max-width: 768px) {
    .fu-hero { padding: 48px 16px; }
    .fu-hero-title { font-size: 34px; }
    .fu-hero-img-caption { display: none; }
    .fu-about { padding: 48px 16px; }
    .fu-scenes { padding: 48px 16px; }
    .fu-scene-points { grid-template-columns: 1fr; }
    .fu-cta { padding: 64px 20px; }
    .fu-cta-icon { width: 56px; height: 56px; font-size: 22px; }
}