/**
 * 解决方案专题 /solution/
 * 深空蓝 + 金色点缀，与 front.css / business.css 变量一致
 */

.sol-page { background: var(--bg); }

/* ---------- Hero ---------- */
.sol-hero {
    padding: 56px 0 64px;
    background:
        radial-gradient(ellipse 80% 60% at 85% 20%, rgba(201, 162, 39, .18) 0%, transparent 55%),
        radial-gradient(ellipse 50% 40% at 10% 80%, rgba(59, 130, 246, .2) 0%, transparent 50%),
        linear-gradient(145deg, var(--dark) 0%, var(--primary-dark) 48%, #163a8a 100%);
}
.sol-hero--cat,
.sol-hero--detail { padding: 48px 0 52px; }
.sol-hero .breadcrumb { margin-bottom: 28px; }
.sol-hero-main { max-width: 720px; position: relative; }
.sol-hero-kicker {
    margin: 0 0 12px;
    font-size: 13px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent-light);
    font-weight: 600;
}
.sol-hero-title {
    margin: 0;
    font-size: clamp(28px, 4.5vw, 42px);
    font-weight: 800;
    line-height: 1.25;
    color: #fff;
}
.sol-hero--detail .sol-hero-title {
    font-size: clamp(24px, 3.5vw, 34px);
}
.sol-hero-lead {
    margin: 16px 0 0;
    font-size: 16px;
    line-height: 1.75;
    color: rgba(255, 255, 255, .82);
    max-width: 40em;
}
.sol-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}
.sol-hero-actions .btn-lg {
    padding: .7rem 1.4rem;
    font-weight: 600;
    border-radius: 10px;
}
.sol-hero-actions .btn-outline-light:hover {
    background: rgba(255, 255, 255, .12);
    color: #fff;
}

.sol-hero-cat {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 22px;
    align-items: start;
    max-width: 800px;
}
.sol-hero-cat-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    background: var(--pillar-accent, var(--primary));
    box-shadow: 0 10px 28px rgba(0, 0, 0, .22);
}

/* ---------- Stats ---------- */
.sol-stats {
    margin-top: -28px;
    position: relative;
    z-index: 2;
    padding-bottom: 8px;
}
.sol-stats-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.sol-stats-list li {
    padding: 22px 16px;
    text-align: center;
    border-right: 1px solid var(--border);
}
.sol-stats-list li:last-child { border-right: 0; }
.sol-stats-list strong {
    display: block;
    font-size: clamp(20px, 2.4vw, 26px);
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.2;
}
.sol-stats-list span {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---------- Sections ---------- */
.sol-section { padding: 64px 0; }
.sol-section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 36px;
}
.sol-section-kicker {
    margin: 0 0 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--accent);
}
.sol-section-head h2 {
    margin: 0;
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 800;
    color: var(--dark);
}
.sol-section-head p {
    margin: 10px 0 0;
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ---------- 软件定制开发主要品类 ---------- */
.sol-dev-cats { background: var(--white); }
.sol-dev-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.sol-dev-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px 24px;
    border-top: 3px solid var(--dev-accent, var(--primary));
    animation: solFadeUp .5s ease both;
    animation-delay: var(--dev-delay, 0s);
    transition: box-shadow .2s, transform .2s, background .2s;
}
.sol-dev-card:hover {
    background: #fff;
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}
.sol-dev-head {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 16px;
}
.sol-dev-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    background: var(--dev-accent, var(--primary));
    flex-shrink: 0;
}
.sol-dev-head h3 {
    margin: 0 0 6px;
    font-size: 18px;
    font-weight: 750;
    color: var(--dark);
}
.sol-dev-head p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-muted);
}
.sol-dev-items {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sol-dev-items li {
    position: relative;
    padding: 10px 12px 10px 28px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .72);
    border: 1px solid var(--border);
}
.sol-dev-items li::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 16px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--dev-accent, var(--primary));
}
.sol-dev-items strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.4;
}
.sol-dev-items span {
    display: block;
    margin-top: 3px;
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-muted);
}
.sol-dev-items li > span:only-child { margin-top: 0; }

/* ---------- 数字化解决方案 ---------- */
.sol-packages { background: var(--bg); }
.sol-package-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}
.sol-package-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px 22px;
    height: 100%;
    animation: solFadeUp .5s ease both;
    animation-delay: var(--pkg-delay, 0s);
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.sol-package-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: color-mix(in srgb, var(--pkg-accent, var(--primary)) 35%, var(--border));
}
.sol-package-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    background: var(--pkg-accent, var(--primary));
    margin-bottom: 14px;
}
.sol-package-card h3 {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: 750;
    color: var(--dark);
    line-height: 1.35;
}
.sol-package-card > p {
    margin: 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-muted);
}
.sol-package-suitable {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
    font-size: 12px;
    line-height: 1.55;
    color: var(--pkg-accent, var(--primary));
    font-weight: 600;
}
.sol-packages-cta {
    text-align: center;
    margin-top: 32px;
}
.sol-packages-cta .btn-lg {
    padding: .75rem 1.6rem;
    font-weight: 700;
    border-radius: 12px;
}

@keyframes solFadeUp {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Pillars ---------- */
.sol-pillars { background: var(--white); padding-top: 56px; }
.sol-pillars-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.sol-pillar-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 26px;
    border-top: 3px solid var(--pillar-accent, var(--primary));
    transition: box-shadow .2s, transform .2s, background .2s;
}
.sol-pillar-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}
.sol-pillar-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}
.sol-pillar-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    background: var(--pillar-accent, var(--primary));
    flex-shrink: 0;
}
.sol-pillar-head h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
}
.sol-pillar-count {
    display: inline-block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-muted);
}
.sol-pillar-card > p {
    margin: 0;
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-muted);
}
.sol-pillar-tags {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sol-pillar-tags li {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--white);
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.sol-pillar-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}
.sol-pillar-link:hover { color: var(--primary-dark); }
.sol-pillar-link i { transition: transform .2s; }
.sol-pillar-link:hover i { transform: translateX(3px); }

/* ---------- Filter ---------- */
.sol-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 32px;
}
.sol-filter a {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--white);
    border: 1px solid var(--border);
    transition: background .2s, color .2s, border-color .2s;
}
.sol-filter a:hover {
    color: var(--primary);
    border-color: rgba(26, 86, 219, .35);
}
.sol-filter a.is-active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-color: transparent;
}

/* ---------- Solution cards ---------- */
.sol-list { background: var(--bg); }
.sol-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.sol-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    color: inherit;
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.sol-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(26, 86, 219, .25);
    color: inherit;
}
.sol-card-cover {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #f1f5f9;
}
.sol-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s;
}
.sol-card:hover .sol-card-cover img {
    transform: scale(1.05);
}
.sol-card-cover--icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 70% 30%, rgba(201, 162, 39, .15), transparent 50%),
        linear-gradient(135deg, #eff6ff, #dbeafe);
}
.sol-card-cover--icon i {
    font-size: 42px;
    color: var(--primary);
    opacity: .65;
}
.sol-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px;
}
.sol-card-body h3 {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
}
.sol-card-body p {
    margin: 0 0 14px;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.sol-card-tags,
.sol-detail-tags {
    list-style: none;
    margin: 0 0 14px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sol-card-tags li,
.sol-detail-tags li {
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 6px;
    background: #f1f5f9;
    color: var(--text-muted);
}
.sol-detail-tags { margin-bottom: 24px; }
.sol-detail-tags li {
    background: #eff6ff;
    color: var(--primary-dark);
}
.sol-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
}
.sol-card:hover .sol-card-link i {
    transform: translateX(3px);
}
.sol-card-link i { transition: transform .2s; }

.sol-empty {
    text-align: center;
    padding: 56px 20px;
    color: var(--text-muted);
}
.sol-empty i {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
    opacity: .45;
}
.sol-empty p { margin: 0 0 18px; }
.sol-empty h2 {
    margin: 12px 0 16px;
    font-size: 20px;
    color: var(--dark);
}

.sol-pagination {
    margin-top: 40px;
    display: flex;
    justify-content: center;
}

/* ---------- CTA ---------- */
.sol-cta {
    padding: 56px 0 72px;
    background:
        radial-gradient(ellipse 70% 80% at 100% 0%, rgba(201, 162, 39, .15) 0%, transparent 50%),
        linear-gradient(120deg, var(--dark) 0%, var(--primary-dark) 55%, var(--primary) 100%);
}
.sol-cta--inset {
    margin: 40px 0 64px;
    padding: 36px 32px;
    border-radius: var(--radius-lg);
}
.sol-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    flex-wrap: wrap;
    color: #fff;
}
.sol-cta-inner h2 {
    margin: 0;
    font-size: clamp(20px, 2.8vw, 28px);
    font-weight: 800;
}
.sol-cta-inner p {
    margin: 10px 0 0;
    font-size: 15px;
    color: rgba(255, 255, 255, .78);
    max-width: 36em;
}
.sol-cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 10px;
    background: var(--accent);
    color: var(--dark);
    font-weight: 700;
    font-size: 15px;
    box-shadow: 0 8px 24px rgba(201, 162, 39, .35);
    transition: background .2s, transform .2s;
}
.sol-cta-btn:hover {
    background: var(--accent-light);
    color: var(--dark);
    transform: translateY(-2px);
}
.sol-cta-btn i { transition: transform .2s; }
.sol-cta-btn:hover i { transform: translateX(3px); }
.sol-cta-btn--block { width: 100%; }

/* ---------- Detail ---------- */
.sol-detail-wrap {
    padding: 40px 0 24px;
}
.sol-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 28px;
    align-items: start;
}
.sol-detail-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 32px 28px;
    box-shadow: var(--shadow);
}
.sol-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-muted);
}
.sol-detail-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.sol-detail-meta i { color: var(--primary); }
.sol-detail-cover {
    margin-bottom: 24px;
    border-radius: var(--radius);
    overflow: hidden;
    background: #f1f5f9;
}
.sol-detail-cover img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
}
.sol-detail-summary {
    position: relative;
    margin-bottom: 28px;
    padding: 18px 20px 18px 48px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #eff6ff, #f8fafc);
    border-left: 4px solid var(--primary);
}
.sol-detail-summary > i {
    position: absolute;
    left: 14px;
    top: 16px;
    font-size: 20px;
    color: var(--primary);
    opacity: .55;
}
.sol-detail-summary p {
    margin: 0;
    font-size: 15px;
    line-height: 1.75;
    color: var(--primary-dark);
}
.sol-detail-body {
    font-size: 15px;
    line-height: 1.85;
    color: var(--text);
}
.sol-detail-body img {
    border-radius: 8px;
    margin: 12px 0;
}
.sol-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.sol-detail-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
}
.sol-detail-nav-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.sol-detail-nav a {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
}
.sol-detail-nav a:hover { color: var(--primary); }
.sol-detail-nav-next { text-align: right; }
.sol-detail-nav-muted {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
}

.sol-detail-aside {
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: sticky;
    top: calc(var(--nav-h, 72px) + 16px);
}
.sol-side-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.sol-side-title {
    margin: 0;
    padding: 14px 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    border-bottom: 1px solid var(--border);
    background: #f8fafc;
}
.sol-side-list {
    list-style: none;
    margin: 0;
    padding: 8px 0;
}
.sol-side-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px;
    font-size: 14px;
    color: var(--text);
    border-bottom: 1px solid #f1f5f9;
    transition: background .15s, color .15s;
}
.sol-side-list li:last-child a { border-bottom: 0; }
.sol-side-list a:hover {
    background: #f8fafc;
    color: var(--primary);
}
.sol-side-list i {
    color: var(--primary);
    font-size: 15px;
    flex-shrink: 0;
}
.sol-side-cta {
    padding: 22px 20px;
    border-radius: var(--radius-lg);
    background:
        radial-gradient(ellipse 80% 60% at 100% 0%, rgba(201, 162, 39, .2) 0%, transparent 55%),
        linear-gradient(145deg, var(--dark) 0%, var(--primary-dark) 100%);
    color: #fff;
}
.sol-side-cta h2 {
    margin: 0;
    font-size: 17px;
    font-weight: 800;
}
.sol-side-cta p {
    margin: 8px 0 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, .75);
    line-height: 1.6;
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
    .sol-stats-list { grid-template-columns: repeat(2, 1fr); }
    .sol-stats-list li:nth-child(2) { border-right: 0; }
    .sol-stats-list li:nth-child(1),
    .sol-stats-list li:nth-child(2) { border-bottom: 1px solid var(--border); }
    .sol-pillars-grid { grid-template-columns: 1fr; }
    .sol-dev-grid { grid-template-columns: 1fr; }
    .sol-package-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-cards-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-detail-layout { grid-template-columns: 1fr; }
    .sol-detail-aside { position: static; }
    .sol-hero-cat { grid-template-columns: 1fr; }
}

@media (max-width: 575.98px) {
    .sol-hero { padding: 40px 0 52px; }
    .sol-stats { margin-top: -20px; }
    .sol-section { padding: 48px 0; }
    .sol-package-grid { grid-template-columns: 1fr; }
    .sol-cards-grid { grid-template-columns: 1fr; }
    .sol-detail-card { padding: 22px 18px; }
    .sol-detail-nav { grid-template-columns: 1fr; }
    .sol-detail-nav-next { text-align: left; }
    .sol-cta-inner { flex-direction: column; align-items: flex-start; }
    .sol-cta-btn { width: 100%; }
    .sol-cta--inset { padding: 28px 20px; margin-bottom: 48px; }
    .sol-filter { justify-content: flex-start; }
    .sol-filter a { font-size: 13px; padding: 7px 12px; }
}

@media (max-width: 991.98px) {
    body.h5-has-tabbar .sol-cta:not(.sol-cta--inset) {
        padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    }
}

@media (hover: none) and (pointer: coarse) {
    .sol-card:hover,
    .sol-pillar-card:hover,
    .sol-dev-card:hover,
    .sol-package-card:hover {
        transform: none;
    }
}