* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
}
body {
    background-color: #fff;
    color: #333;
}
.header {
    background: #fff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06) !important;
}
.banner { margin-top: 70px; }
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-title {
    text-align: center;
    margin-bottom: 25px;
}
.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 8px;
    line-height: 1.3;
}
.section-title p {
    font-size: 16px;
    color: #4b5663;
    line-height: 1.6;
    max-width: 1000px;
    margin: 0 auto;
}
.banner {
    width: 100%;
    min-height: 500px;
    background-image: url(/static/zhanpc/images/fangwei-banner.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 12%;
    overflow: hidden;
}
.banner::before { display: none; }
.banner-content {
    max-width: 600px;
    z-index: 2;
    position: relative;
}
.banner-title {
    font-size: 48px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 16px;
    line-height: 1.2;
}
.banner-title .highlight { color: #2563eb; }
.banner-desc {
    font-size: 18px;
    color: #374151;
    line-height: 1.7;
    margin-bottom: 28px;
}
.banner-btn {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 18px rgba(37,99,235,0.4);
}
.banner-btn:hover {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    box-shadow: 0 6px 24px rgba(37,99,235,0.55);
    transform: translateY(-2px);
}
@media (max-width: 768px) {
    .banner { min-height: 320px; padding: 0 8%; }
    .banner-title { font-size: 32px; }
    .banner-desc { font-size: 15px; }
}
.trace-section {
    background-image: url(/static/zhanpc/images/sec2-bg.png);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 100px 0;
    position: relative;
}
.trace-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(230, 240, 255, 0.55);
    pointer-events: none;
    z-index: 0;
}
.trace-section .container { position: relative; z-index: 1; }
.card-wrap { display:grid; grid-template-columns:repeat(4,1fr); gap: 24px; }
.trace-card {
    background: rgba(255, 255, 255, 0.85);
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(191, 219, 254, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}
.trace-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.12);
}
.card-icon {
    width: 64px; height: 64px;
    background-color: #3b82f6;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px auto;
}
.card-icon svg { width: 32px; height: 32px; fill: #fff; }
.trace-card h3 { font-size: 20px; font-weight: 600; color: #1f2937; margin-bottom: 12px; }
.trace-card .subtitle { font-size: 15px; color: #3b82f6; font-weight: 500; margin-bottom: 10px; }
.trace-card p { font-size: 14px; color: #6b7280; line-height: 1.7; }
.compare-section {
    background: linear-gradient(to bottom, #f0fdf4, #dcfce7);
    padding: 70px 0;
}
.compare-wrap {
    display: flex; justify-content: center; align-items: stretch;
    gap: 16px; width: 100%;
}
.compare-col {
    flex: 1.3; background: #fff; border-radius: 16px;
    padding: 28px 24px; box-shadow: 0 4px 16px rgba(16, 185, 129, 0.08);
    display: flex; flex-direction: column; min-width: 0;
}
.compare-col .col-title {
    display: inline-block; padding: 8px 20px; border-radius: 20px;
    color: #fff; font-weight: 600; font-size: 19px;
    margin-bottom: 20px; align-self: flex-start;
}
.compare-col.normal .col-title { background-color: #a3d03c; }
.compare-col.secure .col-title { background-color: #16a34a; }
.compare-list { list-style: none; flex: 1; display: grid; grid-template-rows: repeat(5, 1fr); row-gap: 6px; }
.compare-list li {
    display: flex; align-items: center; gap: 12px;
    font-size: 15px; line-height: 1.6; color: #374151; padding: 10px 0;
}
.compare-list li::before {
    content: ''; display: inline-block; width: 8px; height: 8px;
    border-radius: 50%; background-color: #d1d5db; flex-shrink: 0;
}
.compare-col.secure .compare-list li::before { background-color: #16a34a; }
.compare-middle {
    background: linear-gradient(to bottom, #16a34a, #15803d);
    color: #fff; padding: 28px 14px; border-radius: 16px;
    display: flex; flex-direction: column; align-items: center;
    flex-shrink: 0; min-width: 100px; flex: 0.5;
}
.compare-middle .compare-title { font-size: 26px; font-weight: 700; margin-bottom: 20px; flex-shrink: 0; }
.compare-items { flex: 1; display: grid; grid-template-rows: repeat(5, 1fr); row-gap: 6px; width: 100%; }
.compare-item {
    background: rgba(255,255,255,0.12); border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    text-align: center; font-weight: 500; font-size: 14px; padding: 8px 10px; line-height: 1.3;
}
.feature-section {
    background-image: url(/static/zhanpc/images/sec3-bg.png);
    background-size: cover; background-position: center;
    background-repeat: no-repeat; padding: 80px 0; position: relative;
}
.feature-section::before {
    content: ''; position: absolute; inset: 0;
    background: rgba(248, 250, 252, 0.55);
    pointer-events: none; z-index: 0;
}
.feature-section .container { position: relative; z-index: 1; }
.feature-main-wrap { display: flex; gap: 40px; align-items: flex-start; flex-wrap: nowrap; justify-content: center; margin-bottom: 40px; }
.feature-phone { flex: 0 0 300px; background: #fff; border-radius: 20px; box-shadow: 0 8px 30px rgba(0,0,0,0.06); padding: 14px; display: flex; align-items: center; justify-content: center; }
.feature-phone .phone-mockup { width: 100%; max-height: 400px; display: block; }
.feature-list { flex: 1; min-width: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.feature-item { background: #ffffff; border-radius: 14px; padding: 22px 24px; box-shadow: 0 2px 10px rgba(0,0,0,0.04); display: flex; align-items: center; gap: 16px; text-align: left; }
.feature-icon { width: 56px; height: 56px; background-color: #2563eb; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.feature-icon svg { width: 28px; height: 28px; fill: #fff; }
.feature-content h3 { font-size: 20px; color: #1e293b; margin-bottom: 6px; font-weight: 600; }
.feature-content p { font-size: 15px; color: #64748b; line-height: 1.6; }
.process-section { background: linear-gradient(to bottom, #f0fdf4, #ecfdf5); padding: 70px 0; }
.process-container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.process-card { background: #fff; border-radius: 10px; padding: 26px 22px; min-height: 90px; box-shadow: 0 2px 10px rgba(22,163,74,0.08); display: flex; align-items: center; gap: 16px; border-left: 4px solid #16a34a; position: relative; transition: box-shadow 0.25s ease, transform 0.25s ease; }
.process-card:hover { box-shadow: 0 6px 20px rgba(22,163,74,0.15); transform: translateY(-2px); }
.process-card:nth-child(4n+2) { border-left-color: #22c55e; }
.process-card:nth-child(4n+3) { border-left-color: #10b981; }
.process-card:nth-child(4n+4) { border-left-color: #059669; }
.process-card-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.process-card-icon svg { width: 100%; height: 100%; fill: #16a34a; }
.process-card:nth-child(4n+2) .process-card-icon svg { fill: #22c55e; }
.process-card:nth-child(4n+3) .process-card-icon svg { fill: #10b981; }
.process-card:nth-child(4n+4) .process-card-icon svg { fill: #059669; }
.process-text { flex: 1; text-align: left; }
.process-step-label { font-size: 11px; font-weight: 600; color: #16a34a; letter-spacing: 0.5px; margin-bottom: 4px; }
.process-card:nth-child(4n+2) .process-step-label { color: #22c55e; }
.process-card:nth-child(4n+3) .process-step-label { color: #10b981; }
.process-card:nth-child(4n+4) .process-step-label { color: #059669; }
.process-card-title { font-size: 17px; font-weight: 600; color: #1f2937; margin-bottom: 4px; }
.process-card-desc { font-size: 13px; color: #6b7280; line-height: 1.5; }
.core-function-section {
    background-image: url(/static/zhanpc/images/sec4-bg.png);
    background-size: cover; background-position: center;
    background-repeat: no-repeat; padding: 60px 0; position: relative;
}
.core-function-section::before {
    content: ''; position: absolute; inset: 0;
    background: rgba(240, 247, 255, 0.5);
    pointer-events: none; z-index: 0;
}
.core-function-section .container { position: relative; z-index: 1; }
.tab-nav-wrap { display: flex; justify-content: center; margin-bottom: 36px; }
.tab-nav {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 10px; padding: 6px; background: #ffffff;
    border-radius: 50px; box-shadow: 0 2px 16px rgba(37,99,235,0.08);
    border: 1px solid #e2e8f0;
}
.tab-nav-item {
    padding: 11px 26px; border-radius: 50px; cursor: pointer;
    font-size: 15px; color: #475569; font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    white-space: nowrap; user-select: none;
}
.tab-nav-item:hover:not(.active) { color: #2563eb; background: rgba(37,99,235,0.06); }
.tab-nav-item.active { background: #2563eb; color: #ffffff; box-shadow: 0 4px 14px rgba(37,99,235,0.35); transform: scale(1.03); }
.tab-content-wrap {
    background: #ffffff; border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    border: 1px solid #e2e8f0; padding: 36px;
    display: none; align-items: center; gap: 48px; flex-wrap: wrap;
    animation: tabFadeIn 0.35s ease;
}
@keyframes tabFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.tab-content-wrap.active { display: flex; }
.tab-text { flex: 1; min-width: 280px; }
.tab-text h3 { font-size: 24px; color: #1e293b; margin-bottom: 18px; font-weight: 700; }
.tab-text p { font-size: 15px; color: #64748b; line-height: 1.9; margin-bottom: 10px; padding-left: 24px; position: relative; }
.tab-text p::before { content: ''; position: absolute; left: 4px; top: 10px; width: 7px; height: 7px; border-radius: 50%; background: #2563eb; opacity: 0.5; }
.tab-btn { display: inline-block; margin-top: 24px; padding: 13px 36px; background: linear-gradient(135deg,#2563eb,#1d4ed8); color: #fff; font-size: 15px; font-weight: 600; border-radius: 8px; text-decoration: none; transition: all 0.3s ease; border: none; cursor: pointer; box-shadow: 0 4px 14px rgba(37,99,235,0.3); }
.tab-btn:hover { background: linear-gradient(135deg,#3b82f6,#2563eb); box-shadow: 0 6px 20px rgba(37,99,235,0.4); transform: translateY(-1px); }
.tab-image { flex: 1; min-width: 280px; display: flex; justify-content: center; align-items: center; }
.tab-image img { max-width: 100%; border-radius: 12px; box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.scene-section {
    padding: 70px 0;
    background-image: url(/static/zhanpc/images/sec5-bg.png);
    background-size: cover; background-position: center;
    background-repeat: no-repeat; position: relative;
}
.scene-section::before { content: ''; position: absolute; inset: 0; background: rgba(248,250,252,0.55); pointer-events: none; z-index: 0; }
.scene-section .container { position: relative; z-index: 1; }
.scene-card-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 25px; margin-top: 40px; }
.scene-card { position: relative; height: 220px; border-radius: 16px; overflow: hidden; background-size: cover; background-position: center; transition: 0.3s; }
.scene-mask { position: absolute; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; flex-direction: column; align-items: center; justify-content: center; color: #fff; padding: 20px; text-align: center; }
.scene-card h4 { font-size: 18px; margin-bottom: 8px; }
.scene-card p { font-size: 14px; line-height: 1.6; }
.case-section { padding: 70px 0; background: #fff; }
.case-wrap { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; margin-top: 40px; }
.case-item { border-radius: 16px; overflow: hidden; box-shadow: 0 4px 18px rgba(0,0,0,0.07); background: #fff; transition: box-shadow 0.3s ease; }
.case-item:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.case-img { width: 100%; height: 200px; background-color: #eef2ff; background-size: cover; background-position: center; transition: transform 0.4s ease; }
.case-item:hover .case-img { transform: scale(1.05); }
.case-info { padding: 20px; }
.case-info h4 { font-size: 18px; margin-bottom: 10px; color: #1f2937; }
.case-info p { font-size: 14px; color: #64748b; line-height: 1.7; }
.advantage-section {
    padding: 70px 0;
    background-image: url(/static/zhanpc/images/sec2-bg.png);
    background-size: cover; background-position: center;
    background-repeat: no-repeat; position: relative;
}
.advantage-section::before { content: ''; position: absolute; inset: 0; background: rgba(238,242,255,0.5); pointer-events: none; z-index: 0; }
.advantage-section .container { position: relative; z-index: 1; }
.advantage-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; margin-top: 40px; }
.advantage-item { text-align: center; padding: 25px 15px; }
.advantage-icon { width: 56px; height: 56px; background-color: #2563eb; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.advantage-icon svg { width: 28px; height: 28px; fill: #fff; }
.advantage-item h4 { font-size: 17px; margin: 0 0 8px; color: #1f2937; }
.advantage-item p { font-size: 14px; color: #64748b; }
.phone-mockup { width: 100%; max-width: 300px; margin: 0 auto; }
@media (max-width: 768px) {
    .section-title h2 { font-size: 26px; }
    .card-wrap,.case-wrap,.scene-card-list,.advantage-list,.process-container { grid-template-columns: repeat(2,1fr); }
    .compare-wrap { flex-direction: column; gap: 16px; }
    .compare-col.normal { order: 1; }
    .compare-middle { order: 2; flex-direction: row; align-items: center; min-width: 100%; padding: 16px; gap: 10px; border-radius: 14px; }
    .compare-middle .compare-title { margin-bottom: 0; margin-right: 8px; font-size: 20px; flex-shrink: 0; }
    .compare-items { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
    .compare-item { padding: 6px 12px; font-size: 13px; border-radius: 6px; }
    .compare-col.secure { order: 3; }
    .compare-list { grid-template-rows: auto; gap: 6px; }
    .compare-list li { padding: 6px 0; font-size: 15px; }
    .feature-main-wrap { flex-wrap: wrap; }
    .feature-phone { flex: 1 1 100%; max-width: 280px; }
    .feature-list { grid-template-columns: 1fr; }
    .feature-item { flex-direction: row; text-align: left; gap: 12px; }
    .feature-icon { margin: 0; width: 48px; height: 48px; flex-shrink: 0; }
    .feature-icon svg { width: 24px; height: 24px; }
    .feature-content h3 { font-size: 17px; }
    .feature-content p { font-size: 13px; }
    .process-step-label { display: none; }
    .process-card { flex-direction: column; text-align: center; border-left: none; border-top: 4px solid #16a34a; padding: 24px 14px; gap: 10px; }
    .process-card:nth-child(4n+2) { border-top-color: #22c55e; }
    .process-card:nth-child(4n+3) { border-top-color: #10b981; }
    .process-card:nth-child(4n+4) { border-top-color: #059669; }
    .process-card-icon { margin: 0 auto; }
    .process-text { text-align: center; }
    .process-card-title { font-size: 15px; }
    .process-card-desc { font-size: 12px; }
    .tab-nav { width: 100%; gap: 6px; padding: 5px; border-radius: 36px; }
    .tab-nav-item { padding: 8px 12px; font-size: 12px; border-radius: 36px; }
    .tab-nav-item.active { transform: scale(1.02); }
    .tab-content-wrap { flex-direction: column; padding: 20px; gap: 24px; border-radius: 14px; }
    .tab-image { order: -1; min-width: 100%; }
    .tab-text h3 { font-size: 20px; }
    .tab-text p { font-size: 14px; padding-left: 20px; }
    .tab-text p::before { width: 6px; height: 6px; top: 8px; }
    .case-section .section-title { text-align: center; }
    .case-info h4 { text-align: center; }
}