/* ============================================================
   琪顺智能 SZQSI — Mac / Apple 风格官网样式 v2 (2026-09)
   设计语言：大留白、超粗标题、玻璃拟态、柔和渐变、圆角卡片
   ============================================================ */

:root {
    --ink: #1d1d1f;
    --ink-soft: #6e6e73;
    --ink-faint: #86868b;
    --paper: #ffffff;
    --paper-tint: #f5f5f7;
    --blue: #0071e3;
    --blue-deep: #1a365d;
    --blue-bright: #4299e1;
    --gold: #f6ad55;
    --green: #34c759;
    --red: #ff3b30;
    --purple: #af52de;
    --orange: #ff9500;
    --dark-bg: #000000;
    --dark-card: rgba(255, 255, 255, 0.06);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-lift: 0 20px 60px rgba(0, 0, 0, 0.12);
    --nav-h: 52px;
    --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
}

* { margin: 0; padding: 0; border: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Display", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: var(--paper);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container {
    width: min(1200px, 92%);
    margin: 0 auto;
}

/* ---------- 滚动渐入动画 ---------- */
.scroll-animate {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s var(--ease-spring), transform 0.9s var(--ease-spring);
}
.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .scroll-animate { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ---------- 导航栏：玻璃拟态 ---------- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--nav-h);
    background: rgba(251, 251, 253, 0.8);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, background 0.3s ease;
}
.navbar.scrolled {
    background: rgba(251, 251, 253, 0.92);
    border-bottom-color: rgba(0, 0, 0, 0.08);
}
.nav-container {
    width: min(1200px, 92%);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-img { height: 34px; width: auto; }
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    display: block;
    padding: 6px 14px;
    font-size: 14px;
    color: var(--ink);
    border-radius: 980px;
    transition: background 0.25s ease, color 0.25s ease;
}
.nav-link:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--blue);
}
.language-switch button {
    margin-left: 8px;
    padding: 5px 14px;
    font-size: 13px;
    border-radius: 980px;
    border: 1px solid rgba(0, 0, 0, 0.15);
    background: transparent;
    color: var(--ink);
    transition: all 0.25s ease;
}
.language-switch button:hover {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}

/* 移动端汉堡 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
    z-index: 1001;
}
.hamburger span {
    width: 22px; height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: calc(var(--nav-h) + 72px) 0 80px;
    background: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 55%, #ffffff 100%);
    overflow: hidden;
}
.hero-glow {
    position: absolute;
    top: -240px; right: -160px;
    width: 720px; height: 720px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(66, 153, 225, 0.18) 0%, rgba(246, 173, 85, 0.10) 45%, transparent 70%);
    filter: blur(20px);
    pointer-events: none;
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--blue-deep);
    background: rgba(0, 113, 227, 0.08);
    border: 1px solid rgba(0, 113, 227, 0.15);
    border-radius: 980px;
}
.hero-badge i { color: var(--gold); font-size: 12px; }
.hero-title {
    margin: 22px 0 20px;
    font-size: clamp(38px, 5.2vw, 64px);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.02em;
}
.text-gradient {
    background: linear-gradient(92deg, var(--blue-deep) 0%, var(--blue-bright) 55%, var(--gold) 110%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.hero-subtitle {
    font-size: 17px;
    color: var(--ink-soft);
    max-width: 520px;
    margin-bottom: 32px;
}
.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 26px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 980px;
    transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, background 0.25s ease;
}
.cta-button:hover { transform: scale(1.035); }
.cta-button:active { transform: scale(0.98); }
.cta-button.primary {
    background: var(--blue);
    color: #fff;
    box-shadow: 0 6px 18px rgba(0, 113, 227, 0.35);
}
.cta-button.primary:hover {
    background: #0077ed;
    box-shadow: 0 10px 26px rgba(0, 113, 227, 0.42);
}
.cta-button.primary i { font-size: 12px; transition: transform 0.3s ease; }
.cta-button.primary:hover i { transform: translateX(3px); }
.cta-button.secondary {
    background: transparent;
    color: var(--blue);
    border: 1px solid rgba(0, 113, 227, 0.4);
}
.cta-button.secondary:hover { background: rgba(0, 113, 227, 0.07); }
.hero-trust {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--ink-faint);
}
.trust-dot {
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--ink-faint);
    opacity: 0.5;
}
.scroll-indicator {
    position: absolute;
    bottom: 22px; left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--ink-faint);
    animation: float 2.4s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 7px); }
}

/* ---------- 产品仪表盘 Mockup ---------- */
.hero-visual { position: relative; }
.mockup-window {
    position: relative;
    z-index: 2;
    background: #fff;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: var(--shadow-lift);
    overflow: hidden;
}
.mockup-titlebar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 11px 14px;
    background: linear-gradient(180deg, #fcfcfe, #f4f4f6);
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}
.traffic { width: 11px; height: 11px; border-radius: 50%; }
.traffic.red { background: #ff5f57; }
.traffic.yellow { background: #febc2e; }
.traffic.green { background: #28c840; }
.mockup-title {
    margin-left: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--ink-faint);
}
.mockup-body { display: flex; min-height: 300px; }
.mockup-sidebar {
    width: 128px;
    flex-shrink: 0;
    padding: 14px 10px;
    background: #fafafa;
    border-right: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.mockup-nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    font-size: 12px;
    color: var(--ink-soft);
    border-radius: 8px;
}
.mockup-nav-item.active {
    background: rgba(0, 113, 227, 0.1);
    color: var(--blue);
    font-weight: 600;
}
.mockup-main {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}
.mockup-kpis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}
.kpi {
    background: var(--paper-tint);
    border-radius: 10px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.kpi-label { font-size: 10px; color: var(--ink-faint); }
.kpi-value { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; }
.kpi-value.up { color: var(--red); }      /* A股习惯：涨红 */
.kpi-value.down { color: var(--green); }  /* 跌绿 */
.mockup-chart {
    position: relative;
    background: var(--paper-tint);
    border-radius: 10px;
    padding: 10px 10px 6px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.mockup-chart svg { width: 100%; flex: 1; min-height: 96px; }
.chart-legend {
    display: flex;
    gap: 14px;
    font-size: 10px;
    color: var(--ink-faint);
    padding: 2px 4px;
}
.legend-item { display: inline-flex; align-items: center; gap: 4px; }
.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot.blue { background: var(--blue-bright); }
.dot.orange { background: var(--gold); }
.mockup-holdings {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.holding-row {
    display: flex;
    align-items: center;
    font-size: 11px;
    color: var(--ink-soft);
    padding: 6px 10px;
    border-radius: 8px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.05);
}
.holding-row span:first-child { flex: 1; }
.holding-row .up { color: var(--red); font-weight: 600; margin-right: 8px; }
.holding-row .down { color: var(--green); font-weight: 600; margin-right: 8px; }
.status-ok { color: var(--green); font-size: 10px; }
.mockup-shadow {
    position: absolute;
    z-index: 1;
    left: 8%; right: 8%;
    bottom: -18px;
    height: 46px;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.16), transparent 70%);
    filter: blur(10px);
}

/* ---------- 数据带 ---------- */
.stats-band {
    padding: 56px 0;
    background: var(--paper);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.stat-num-line { display: inline-flex; align-items: baseline; }
.stat-number,
.stat-plus {
    font-size: clamp(40px, 4.5vw, 56px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    background: linear-gradient(120deg, var(--blue-deep), var(--blue-bright));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label {
    margin-top: 8px;
    font-size: 14px;
    color: var(--ink-soft);
}

/* ---------- 通用 Section ---------- */
.section { padding: 104px 0; }
.section.bg-tint { background: var(--paper-tint); }
.eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--blue);
    text-transform: uppercase;
    margin-bottom: 12px;
}
.section-title {
    font-size: clamp(28px, 3.6vw, 42px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.18;
    margin-bottom: 14px;
}
.section-title.light { color: #f5f5f7; }
.section-subtitle {
    font-size: 16px;
    color: var(--ink-soft);
    margin-bottom: 52px;
    max-width: 640px;
}
.section-subtitle.light { color: rgba(255, 255, 255, 0.62); }
#platform .section-title, #solutions .section-title, #products .section-title,
#advantages .section-title, #about .section-title, #process .section-title,
#testimonials .section-title, #partners .section-title, #faq .section-title,
#contact .section-title { text-align: left; }
.eyebrow, .section-subtitle { text-align: left; }

/* ---------- 平台能力卡片 ---------- */
.capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.capability-card {
    position: relative;
    background: var(--paper);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    transition: transform 0.45s var(--ease-spring), box-shadow 0.45s ease;
}
.section.bg-tint .capability-card { border-color: rgba(0, 0, 0, 0.05); }
.capability-card:hover {
    transform: translateY(-6px) scale(1.012);
    box-shadow: var(--shadow-lift);
}
.capability-card.feature {
    background: linear-gradient(135deg, #1d1d1f 0%, #2d3a4f 60%, #34495e 100%);
    border-color: transparent;
}
.capability-card.feature h3 { color: #fff; }
.capability-card.feature p { color: rgba(255, 255, 255, 0.72); }
.capability-flag {
    position: absolute;
    top: 20px; right: 20px;
    font-size: 11px;
    font-weight: 600;
    color: #1d1d1f;
    background: linear-gradient(120deg, #f6ad55, #ed8936);
    padding: 3px 10px;
    border-radius: 980px;
}
.capability-icon {
    width: 52px; height: 52px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    font-size: 21px;
    margin-bottom: 20px;
}
.capability-icon.blue   { background: rgba(0, 113, 227, 0.1);  color: #0071e3; }
.capability-icon.purple { background: rgba(175, 82, 222, 0.1); color: #af52de; }
.capability-icon.green  { background: rgba(52, 199, 89, 0.12); color: #248a3d; }
.capability-icon.orange { background: rgba(255, 149, 0, 0.12); color: #c93400; }
.capability-icon.red    { background: rgba(255, 59, 48, 0.1);  color: #d70015; }
.capability-icon.gold   { background: rgba(246, 173, 85, 0.18); color: #f6ad55; }
.capability-card h3 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}
.capability-card p {
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.65;
}

/* ---------- 解决方案 ---------- */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.solution-card {
    background: var(--paper);
    border-radius: var(--radius-md);
    padding: 36px 32px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: transform 0.45s var(--ease-spring), box-shadow 0.45s ease;
}
.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lift);
}
.solution-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}
.solution-icon {
    width: 46px; height: 46px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-size: 19px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue-deep), var(--blue-bright));
    flex-shrink: 0;
}
.solution-card:nth-child(2) .solution-icon { background: linear-gradient(135deg, #b45309, #f6ad55); }
.solution-card:nth-child(3) .solution-icon { background: linear-gradient(135deg, #14532d, #34c759); }
.solution-card:nth-child(4) .solution-icon { background: linear-gradient(135deg, #6b21a8, #af52de); }
.solution-header h3 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.solution-card > p {
    font-size: 14.5px;
    color: var(--ink-soft);
    margin-bottom: 18px;
}
.solution-points li {
    position: relative;
    padding-left: 24px;
    font-size: 13.5px;
    color: var(--ink);
    margin-bottom: 9px;
}
.solution-points li::before {
    content: "\2713";
    position: absolute;
    left: 0; top: 0;
    color: var(--blue);
    font-weight: 700;
}

/* ---------- 核心产品 ---------- */
.product-feature {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 56px;
    align-items: center;
    margin-bottom: 96px;
}
.product-feature:last-child { margin-bottom: 0; }
.product-feature.reverse { grid-template-columns: 1fr 1.1fr; }
.product-feature.reverse .product-feature-media { order: 2; }
.product-feature.reverse .product-feature-copy { order: 1; }
.product-feature-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lift);
}
.product-feature-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform 0.8s var(--ease-spring);
}
.product-feature:hover .product-feature-media img { transform: scale(1.04); }
.product-badge {
    position: absolute;
    top: 16px; left: 16px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: rgba(0, 0, 0, 0.55);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    padding: 5px 14px;
    border-radius: 980px;
}
.product-badge.warm { background: rgba(201, 84, 0, 0.85); }
.product-feature-copy h3 {
    font-size: clamp(24px, 2.6vw, 32px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}
.product-feature-copy > p {
    font-size: 15.5px;
    color: var(--ink-soft);
    margin-bottom: 28px;
}
.spec-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}
.spec-item {
    background: var(--paper-tint);
    border-radius: var(--radius-sm);
    padding: 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.spec-value { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.spec-label { font-size: 12px; color: var(--ink-faint); }
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 500;
    color: var(--blue);
}
.text-link i { font-size: 12px; transition: transform 0.3s ease; }
.text-link:hover i { transform: translateX(4px); }

/* ---------- 深色技术优势区 ---------- */
.bg-dark-section {
    background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(66, 153, 225, 0.22), transparent 60%), var(--dark-bg);
    padding: 104px 0;
}
.light-eyebrow { color: var(--gold); }
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}
.advantage-card {
    background: var(--dark-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-md);
    padding: 32px 26px;
    transition: transform 0.45s var(--ease-spring), background 0.3s ease, border-color 0.3s ease;
}
.advantage-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.22);
}
.advantage-icon {
    width: 48px; height: 48px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    font-size: 20px;
    margin-bottom: 18px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--blue-bright));
}
.advantage-card:nth-child(2) .advantage-icon { background: linear-gradient(135deg, #24a148, #34c759); }
.advantage-card:nth-child(3) .advantage-icon { background: linear-gradient(135deg, #c93400, #ff9500); }
.advantage-card:nth-child(4) .advantage-icon { background: linear-gradient(135deg, #7d2ba8, #af52de); }
.advantage-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.advantage-card p {
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.62);
    line-height: 1.65;
}

/* ---------- 关于我们 ---------- */
.about-content {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 56px;
    align-items: center;
    margin-bottom: 88px;
}
.about-text > p {
    font-size: 15.5px;
    color: var(--ink-soft);
    margin-bottom: 18px;
}
.about-features { margin-top: 26px; display: flex; flex-direction: column; gap: 12px; }
.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 500;
}
.feature-item i { color: var(--blue); }
.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lift);
    aspect-ratio: 4 / 3;
    object-fit: cover;
    width: 100%;
}

/* 发展历程 */
.timeline-title {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.01em;
    margin-bottom: 40px;
    text-align: center;
}
.timeline-items {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    position: relative;
}
.timeline-items::before {
    content: "";
    position: absolute;
    top: 7px; left: 8%; right: 8%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0, 113, 227, 0.1), rgba(0, 113, 227, 0.4), rgba(246, 173, 85, 0.5));
    border-radius: 2px;
}
.timeline-item {
    position: relative;
    padding-top: 30px;
    text-align: center;
}
.timeline-dot {
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 16px; height: 16px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--blue);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}
.timeline-dot.current {
    border-color: var(--gold);
    box-shadow: 0 0 0 4px rgba(246, 173, 85, 0.25);
}
.timeline-year {
    display: inline-block;
    font-size: 15px;
    font-weight: 800;
    color: var(--blue);
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}
.timeline-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.timeline-item p { font-size: 12.5px; color: var(--ink-faint); }

/* ---------- 服务流程 ---------- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    counter-reset: step;
}
.process-step {
    background: var(--paper);
    border-radius: var(--radius-md);
    padding: 32px 26px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--shadow-soft);
    transition: transform 0.45s var(--ease-spring), box-shadow 0.45s ease;
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.process-number {
    display: inline-block;
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(120deg, var(--blue-deep), var(--blue-bright));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.9;
    margin-bottom: 14px;
}
.process-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--ink-soft); }

/* ---------- 客户评价 ---------- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.testimonial-card {
    background: var(--paper-tint);
    border-radius: var(--radius-md);
    padding: 34px 30px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    transition: transform 0.45s var(--ease-spring), box-shadow 0.45s ease;
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.quote-icon { color: var(--blue-bright); font-size: 20px; opacity: 0.6; }
.testimonial-card blockquote {
    font-size: 15px;
    line-height: 1.75;
    color: var(--ink);
    flex: 1;
}
.testimonial-card figcaption {
    display: flex;
    align-items: center;
    gap: 12px;
}
.avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
    font-size: 17px;
    flex-shrink: 0;
}
.avatar.blue { background: linear-gradient(135deg, #1a365d, #4299e1); }
.avatar.orange { background: linear-gradient(135deg, #c93400, #f6ad55); }
.avatar.green { background: linear-gradient(135deg, #14532d, #34c759); }
.testimonial-card figcaption strong { display: block; font-size: 14px; }
.testimonial-card figcaption span:not(.avatar) { display: block; font-size: 12.5px; color: var(--ink-faint); }

/* ---------- 合作伙伴 ---------- */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.partner-logo {
    background: var(--paper);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-md);
    padding: 34px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-soft);
    transition: transform 0.4s var(--ease-spring), box-shadow 0.4s ease, color 0.3s ease;
}
.partner-logo i {
    font-size: 30px;
    color: var(--blue-bright);
    transition: transform 0.4s var(--ease-spring);
}
.partner-logo:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lift);
    color: var(--ink);
}
.partner-logo:hover i { transform: scale(1.15); }

/* ---------- FAQ ---------- */
.faq-container { max-width: 820px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--paper-tint);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}
.faq-item[open] { box-shadow: var(--shadow-soft); background: #fff; }
.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
    color: var(--ink-faint);
    font-size: 13px;
    transition: transform 0.35s var(--ease-spring);
    flex-shrink: 0;
}
.faq-item[open] summary i { transform: rotate(180deg); }
.faq-item p {
    padding: 0 24px 22px;
    font-size: 14.5px;
    color: var(--ink-soft);
}

/* ---------- 深色联系区 ---------- */
.bg-dark {
    background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(66, 153, 225, 0.2), transparent 65%), var(--dark-bg);
    padding: 104px 0;
}
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 56px;
    align-items: start;
}
.contact-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
}
.contact-item i {
    color: var(--blue-bright);
    font-size: 15px;
    width: 20px;
    text-align: center;
    margin-top: 4px;
}
.contact-item p {
    font-size: 14.5px;
    color: rgba(255, 255, 255, 0.78);
}
.social-links { display: flex; gap: 12px; margin-top: 28px; }
.social-link {
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    transition: background 0.3s ease, transform 0.3s var(--ease-spring);
}
.social-link:hover {
    background: var(--blue);
    transform: translateY(-3px);
}
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px 18px;
    font-size: 15px;
    font-family: inherit;
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    outline: none;
    transition: border-color 0.25s ease, background 0.25s ease;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255, 255, 255, 0.4); }
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--blue-bright);
    background: rgba(255, 255, 255, 0.1);
}
.contact-form textarea { min-height: 132px; resize: vertical; }
.contact-form button[type="submit"] {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 13px 30px;
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    background: var(--blue);
    border-radius: 980px;
    transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, background 0.25s;
}
.contact-form button[type="submit"]:hover {
    background: #0077ed;
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 113, 227, 0.4);
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
    position: fixed;
    right: 26px; bottom: 26px;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: var(--shadow-soft);
    color: var(--ink);
    font-size: 15px;
    display: grid;
    place-items: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.35s ease, transform 0.35s var(--ease-spring);
    z-index: 900;
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.back-to-top:hover { background: var(--blue); color: #fff; }

/* ---------- 页脚 ---------- */
.footer {
    background: #f5f5f7;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding: 64px 0 28px;
}
.footer-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.footer-logo { height: 38px; margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; color: var(--ink-faint); line-height: 1.8; }
.footer h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-links a {
    display: block;
    font-size: 13.5px;
    color: var(--ink-soft);
    margin-bottom: 10px;
    transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--blue); }
.footer-contact p {
    font-size: 13.5px;
    color: var(--ink-soft);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact i { color: var(--ink-faint); width: 14px; }
.footer-bottom {
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
}
.footer-bottom p { font-size: 12px; color: var(--ink-faint); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .hero-copy { text-align: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-buttons, .hero-trust { justify-content: center; }
    .hero-visual { max-width: 640px; margin: 0 auto; }
    .capability-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }
    .timeline-items { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
    .timeline-items::before { display: none; }
    .product-feature,
    .product-feature.reverse { grid-template-columns: 1fr; gap: 32px; margin-bottom: 72px; }
    .product-feature.reverse .product-feature-media { order: 0; }
    .product-feature.reverse .product-feature-copy { order: 1; }
    .about-content { grid-template-columns: 1fr; gap: 36px; }
    .contact-content { grid-template-columns: 1fr; gap: 44px; }
    .mockup-sidebar { display: none; }
}

@media (max-width: 640px) {
    .section { padding: 68px 0; }
    .bg-dark-section, .bg-dark { padding: 68px 0; }
    .hamburger { display: flex; }
    .nav-menu {
        position: fixed;
        top: var(--nav-h);
        right: 0;
        left: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(251, 251, 253, 0.97);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        padding: 16px 6%;
        gap: 2px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.35s var(--ease-spring), opacity 0.3s ease;
    }
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav-link { padding: 12px 10px; font-size: 15px; }
    .language-switch { margin-top: 6px; }
    .language-switch button { margin-left: 10px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
    .capability-grid,
    .solutions-grid,
    .advantages-grid,
    .process-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .timeline-items { grid-template-columns: repeat(2, 1fr); }
    .mockup-kpis { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .hero { padding-top: calc(var(--nav-h) + 44px); }
    .footer-content { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 4px; }
}