/* ============================================================
   product-common.css — 产品页公共样式
   被 product-sfa/dms/dp/ltc/tpm.css 引用，减少重复代码
   ============================================================ */

/* === Hero Banner === */
.hero {
    position: relative; min-height: 510px;
    display: flex; align-items: center; justify-content: center;
    padding-top: 75px; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.hero-mask { position: absolute; inset: 0; z-index: 1; }
.hero-mask img { width: 100%; height: 100%; object-fit: cover; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 1100px; padding: 0 20px; }
.hero-tag {
    display: inline-flex; background: #0068dd; border-radius: 4px;
    padding: 6px 20px; font-size: 16px; color: #fff; margin-bottom: 20px;
}
.hero-title {
    font-size: 40px; font-weight: 700; color: #fff;
    text-shadow: 0 4px 4px rgba(0,0,0,0.25); margin-bottom: 12px;
}
.hero-desc {
    font-size: 20px; line-height: 40px; color: #fff;
    text-shadow: 0 4px 4px rgba(0,0,0,0.25);
}

/* === Section Header === */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header .tag {
    display: inline-block; background: #e8f0fe; border: 1px solid #0068dd;
    border-radius: 30px; padding: 4px 20px; font-size: 12px; color: #0068dd; margin-bottom: 16px;
}
.section-header .gtitle {
    font-size: 40px; font-weight: 700; letter-spacing: 2.4px;
    background: linear-gradient(180deg, #00e5ff, #0068dd);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 12px;
}
.section-header .sub { font-size: 20px; line-height: 40px; color: #000; }

/* === Feature Blocks === */
.feature-block {
    display: flex; align-items: center; gap: 48px;
    max-width: 1200px; margin: 0 auto 64px; padding: 0 40px;
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse { flex-direction: row-reverse; }
.feature-text { flex: 1; max-width: 600px; }
.feature-image { flex: 1; border-radius: 20px; overflow: hidden; background: transparent; }
.feature-image img { width: 100%; height: auto; display: block; }
.feature-label { font-size: 28px; font-weight: 700; line-height: 1.2; margin-bottom: 12px; }
.feature-label .gradient {
    background: linear-gradient(135deg, #00e5ff, #0068dd);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.feature-underline { width: 60px; height: 3px; background: #0068dd; margin: 0 0 16px; }
.feature-desc { font-size: 16px; line-height: 30px; color: #444; }

/* === Footer Image === */
.footer-image { width: 100%; }
.footer-image img { width: 100%; height: auto; display: block; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .feature-block, .feature-block.reverse { flex-direction: column !important; gap: 24px; }
    .feature-text { max-width: 100%; }
    .hero-title { font-size: 32px; }
    .hero-desc { font-size: 18px; line-height: 32px; }
    .section-header .gtitle { font-size: 30px; }
    .section-header .sub { font-size: 18px; line-height: 30px; }
    .feature-label { font-size: 24px; }
}

@media (max-width: 768px) {
    .hero { min-height: 420px; }
    .hero-title { font-size: 28px; }
    .hero-desc { font-size: 16px; line-height: 1.6; }
    .hero-tag { font-size: 14px; padding: 4px 16px; }
    .section-header { margin-bottom: 32px; }
    .section-header .gtitle { font-size: 24px; }
    .section-header .sub { font-size: 16px; line-height: 1.6; }
    .section-header .tag { font-size: 11px; padding: 3px 14px; }
    .feature-label { font-size: 22px; }
    .feature-desc { font-size: 15px; line-height: 1.8; }
    .feature-block { margin-bottom: 40px; padding: 0 20px; }
    .feature-block:last-child { margin-bottom: 0; }
}

@media (max-width: 480px) {
    .hero { min-height: 360px; padding-top: 65px; }
    .hero-title { font-size: 24px; }
    .hero-desc { font-size: 15px; }
    .hero-content { padding: 0 16px; }
    .section-header .gtitle { font-size: 22px; letter-spacing: 1px; }
    .section-header .sub { font-size: 15px; }
    .feature-block { margin-bottom: 32px; padding: 0 16px; gap: 16px; }
    .feature-label { font-size: 20px; }
    .feature-desc { font-size: 14px; line-height: 1.7; }
    .feature-text { max-width: 100%; }
}