/* ============================================================
   service 目录 - 全屏高端皮肤 (au- 系统：深蓝 #16356b + 科技青蓝 #3f9df0)
   适用于 service 目录下所有页面，统一 hero / section / 卡片 / 标题 / CTA。
   各页面 HTML 仅需引用本文件并把容器改用 .au-wrap / .au-hero 等类。
   配色：深蓝为底、青蓝为强调，板块深浅色交替。
   ============================================================ */

/* ===== 全屏容器 ===== */
.au-wrap { max-width: none; padding-left: 40px; padding-right: 40px; }
.au-center { text-align: center; }

/* ===== 通用区块标题 ===== */
.au-sec { padding: 92px 0; background: #ffffff; }
.au-sec.alt { background: linear-gradient(180deg, #e9f1ff 0%, #dde9ff 100%); }
.au-sec-head { text-align: center; margin-bottom: 56px; }
.au-sec-kick {
	display: inline-block; font-size: 13px; letter-spacing: 3px;
	color: #206ae4; font-weight: 600; margin-bottom: 14px; text-transform: uppercase;
}
.au-sec-title { font-size: 40px; font-weight: 800; color: #16356b; margin: 0; letter-spacing: 1px; }
.au-sec-line { width: 64px; height: 4px; border-radius: 4px; margin: 20px auto 16px;
	background: linear-gradient(90deg, #3f9df0 0%, #8ecbff 100%); }
.au-sec-desc { font-size: 16px; color: #6b7a99; letter-spacing: 1px; margin: 0; }

/* ===== HERO ===== */
.au-hero {
	position: relative; min-height: 660px; display: flex; align-items: center;
	overflow: hidden;
	background: linear-gradient(135deg, #0f1b3c 0%, #16356b 55%, #0a1430 100%);
	padding: 190px 40px 90px;
}
.au-hero-bg { position: absolute; inset: 0;
	background:
		radial-gradient(circle at 18% 30%, rgba(77,143,255,.18), transparent 45%),
		radial-gradient(circle at 82% 70%, rgba(63,157,240,.14), transparent 45%); }
.au-hero-glow { position: absolute; left: -10%; top: -30%; width: 60%; height: 60%;
	background: radial-gradient(circle, rgba(77,143,255,.22), transparent 70%); filter: blur(40px); }
.au-hero-in { position: relative; z-index: 2; width: 100%; }
.au-crumbs { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.6); margin-bottom: 26px; }
.au-crumbs a { color: rgba(255,255,255,.6); text-decoration: none; transition: color .3s; }
.au-crumbs a:hover { color: #3f9df0; }
.au-crumbs i { font-size: 12px; opacity: .5; }
.au-kicker {
	display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px;
	border: 1px solid rgba(63,157,240,.4); border-radius: 50px; color: #8ecbff;
	font-size: 13px; letter-spacing: 2px; margin-bottom: 22px; background: rgba(63,157,240,.08); }
.au-hero-title { font-size: 54px; font-weight: 800; color: #fff; line-height: 1.2; margin: 0 0 22px; max-width: 920px; }
.au-hero-title .hl { color: #3f9df0; }
.au-hero-sub { font-size: 18px; color: rgba(255,255,255,.72); line-height: 1.8; max-width: 720px; margin: 0 0 40px; }
.au-hero-actions { display: flex; gap: 18px; margin-top: 8px; flex-wrap: wrap; }
.au-hero-stats { display: flex; align-items: center; gap: 36px; flex-wrap: wrap; margin-top: 46px; }
.au-stat-num { font-size: 38px; font-weight: 800; color: #3f9df0; line-height: 1; font-family: Georgia, serif; }
.au-stat-lab { font-size: 14px; color: rgba(255,255,255,.65); margin-top: 8px; letter-spacing: 1px; }
.au-stat-div { width: 1px; height: 46px; background: rgba(255,255,255,.14); }
.au-cta-btn {
	display: inline-flex; align-items: center; gap: 10px; padding: 16px 42px; border-radius: 50px;
	background: linear-gradient(135deg, #3f9df0 0%, #8ecbff 100%); color: #0f1b3c;
	font-size: 16px; font-weight: 700; text-decoration: none; transition: all .4s ease;
	box-shadow: 0 8px 30px rgba(63,157,240,.35); cursor: pointer; border: none;
}
.au-cta-btn:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(63,157,240,.45); color: #0f1b3c; }
.au-cta-ghost {
	display: inline-flex; align-items: center; gap: 10px; padding: 16px 42px; border-radius: 50px;
	background: rgba(255,255,255,.06); color: #fff; border: 2px solid rgba(63,157,240,.45);
	font-size: 16px; font-weight: 700; text-decoration: none; transition: all .4s ease; cursor: pointer;
	box-shadow: 0 8px 30px rgba(0,0,0,.12); backdrop-filter: blur(4px);
}
.au-cta-ghost i { color: #8ecbff; transition: transform .4s ease; }
.au-cta-ghost:hover { background: rgba(63,157,240,.18); border-color: #3f9df0; color: #fff; transform: translateY(-4px); box-shadow: 0 12px 40px rgba(63,157,240,.3); }
.au-cta-ghost:hover i { transform: translateX(3px); }
.au-scroll { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 3;
	font-size: 22px; color: rgba(255,255,255,.5); animation: auBounce 2s infinite; cursor: pointer; }
@keyframes auBounce { 0%,100%{ transform: translate(-50%,0);} 50%{ transform: translate(-50%,10px);} }

/* ===== 服务导航 chips ===== */
.au-nav-chips { background: #fafbfd; padding: 26px 0; border-bottom: 1px solid rgba(22,53,107,.06); }
.au-chips { display: flex; flex-wrap: wrap; gap: 14px; }
.au-chip { padding: 12px 26px; border-radius: 50px; background: #fff; color: #16356b; font-size: 15px; font-weight: 600;
	border: 1px solid rgba(22,53,107,.1); text-decoration: none; transition: all .3s ease; }
.au-chip:hover, .au-chip.active { background: linear-gradient(135deg, #206ae4 0%, #4d8fff 100%); color: #fff; border-color: transparent;
	box-shadow: 0 8px 22px rgba(32,106,228,.25); transform: translateY(-2px); }

/* ===== 通用卡片网格 ===== */
.au-card-grid { display: grid; gap: 28px; }
.au-card-grid.c3 { grid-template-columns: repeat(3, 1fr); }
.au-card-grid.c4 { grid-template-columns: repeat(4, 1fr); }
.au-card-grid.c2 { grid-template-columns: repeat(2, 1fr); }

.au-card {
	position: relative; background: #fff; border: 1px solid rgba(22,53,107,.08); border-radius: 18px;
	padding: 34px 30px; transition: all .4s ease; overflow: hidden;
}
.au-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
	background: linear-gradient(90deg, #3f9df0 0%, #8ecbff 100%); transform: scaleX(0); transition: transform .4s ease; }
.au-card:hover::before { transform: scaleX(1); }
.au-card:hover { transform: translateY(-8px); box-shadow: 0 16px 46px rgba(32,106,228,.12); }
.au-card-ico {
	width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
	background: linear-gradient(135deg, #206ae4 0%, #4d8fff 100%); margin-bottom: 22px; transition: all .4s ease;
}
.au-card-ico i { font-size: 26px; color: #fff; }
.au-card:hover .au-card-ico { background: linear-gradient(135deg, #3f9df0 0%, #8ecbff 100%); }
.au-card h3 { font-size: 20px; font-weight: 700; color: #16356b; margin: 0 0 12px; }
.au-card p { font-size: 14px; color: #6b7a99; line-height: 1.7; margin: 0 0 16px; }
.au-card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.au-card-tags span { font-size: 12px; padding: 5px 14px; border-radius: 50px; background: #eef3ff; color: #206ae4; font-weight: 600; }
.au-card-price { display: flex; align-items: baseline; gap: 6px; padding-top: 16px; border-top: 1px dashed rgba(22,53,107,.12); }
.au-card-price .price-label { font-size: 13px; color: #9aa7c0; }
.au-card-price .price-value { font-size: 24px; font-weight: 800; color: #3f9df0; font-family: Georgia, serif; }
.au-card-price .price-unit { font-size: 13px; color: #9aa7c0; font-weight: 600; }

/* ===== 流程步骤 ===== */
.au-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px 36px; }
.au-step { position: relative; background: #fff; border: 1px solid rgba(22,53,107,.06); border-radius: 18px; padding: 36px 30px 30px; transition: all .4s ease; }
.au-step:hover { transform: translateY(-6px); box-shadow: 0 14px 40px rgba(32,106,228,.12); }
.au-step-ico { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
	background: linear-gradient(135deg, #206ae4 0%, #4d8fff 100%); margin-bottom: 20px; }
.au-step-ico i { font-size: 26px; color: #fff; }
.au-step h4 { font-size: 20px; font-weight: 700; color: #16356b; margin: 0 0 10px; }
.au-step p { font-size: 14px; color: #6b7a99; line-height: 1.7; margin: 0; }
.au-step-no { position: absolute; top: 20px; right: 24px; font-size: 36px; font-weight: 800; color: rgba(32,106,228,.08); font-family: Georgia, serif; line-height: 1; }

/* ===== 优势/价值 ===== */
.au-adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.au-adv { padding: 30px 26px; background: #f7f9fc; border: 1px solid rgba(22,53,107,.06); border-radius: 16px; transition: all .4s ease; }
.au-adv:hover { background: #fff; transform: translateY(-6px); box-shadow: 0 14px 38px rgba(63,157,240,.14); }
.au-adv .au-adv-ico { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
	background: linear-gradient(135deg, #206ae4 0%, #4d8fff 100%); margin-bottom: 18px; }
.au-adv .au-adv-ico i { font-size: 22px; color: #fff; }
.au-adv:hover .au-adv-ico { background: linear-gradient(135deg, #3f9df0 0%, #8ecbff 100%); }
.au-adv h3 { font-size: 17px; font-weight: 700; color: #16356b; margin: 0 0 8px; }
.au-adv p { font-size: 13px; color: #6b7a99; line-height: 1.6; margin: 0; }

/* ===== 客户案例 ===== */
.au-cases { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.au-case { background: #fff; border: 1px solid rgba(22,53,107,.08); border-radius: 16px; padding: 30px 26px; transition: all .4s ease; position: relative; overflow: hidden; }
.au-case::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 3px;
	background: linear-gradient(90deg, #3f9df0, #8ecbff); transform: scaleX(0); transition: transform .4s ease; }
.au-case:hover::after { transform: scaleX(1); }
.au-case:hover { transform: translateY(-6px); box-shadow: 0 14px 40px rgba(32,106,228,.12); }
.au-case .au-case-ico { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
	background: linear-gradient(135deg, #eaf1ff, #dfeaff); margin-bottom: 18px; }
.au-case .au-case-ico i { font-size: 24px; color: #206ae4; }
.au-case .au-case-cat { font-size: 12px; color: #3f9df0; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.au-case h3 { font-size: 19px; font-weight: 700; color: #16356b; margin: 8px 0 16px; }
.au-case .au-case-stats { display: flex; gap: 22px; margin-bottom: 16px; }
.au-case .au-case-stats .cs-num { font-size: 24px; font-weight: 800; color: #206ae4; font-family: Georgia, serif; }
.au-case .au-case-stats .cs-lab { font-size: 12px; color: #9aa7c0; }
.au-case .au-case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.au-case .au-case-tags span { font-size: 12px; padding: 4px 12px; border-radius: 50px; background: #eef3ff; color: #206ae4; font-weight: 600; }
.au-case-more { text-align: center; margin-top: 48px; }
.au-case-more a { display: inline-flex; align-items: center; gap: 10px; padding: 15px 44px; border-radius: 50px;
	border: 2px solid rgba(32,106,228,.25); color: #206ae4; font-size: 16px; font-weight: 700; text-decoration: none; transition: all .3s; }
.au-case-more a:hover { background: #206ae4; color: #fff; border-color: transparent; }

/* ===== 数据统计条 ===== */
.au-stats { background: linear-gradient(135deg, #0f1b3c 0%, #16356b 100%); padding: 64px 0; }
.au-stats-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.au-stat { text-align: center; }
.au-stat .au-stat-v { font-size: 42px; font-weight: 800; color: #3f9df0; font-family: Georgia, serif; line-height: 1; }
.au-stat .au-stat-l { font-size: 14px; color: rgba(255,255,255,.65); margin-top: 10px; letter-spacing: 1px; }
.au-stat .au-stat-ico { font-size: 22px; color: #8ecbff; margin-bottom: 12px; }

/* ===== FAQ ===== */
.au-faq { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.au-faq-item { background: #fff; border: 1px solid rgba(22,53,107,.08); border-radius: 14px; padding: 26px 28px; transition: all .3s ease; }
.au-faq-item:hover { box-shadow: 0 10px 30px rgba(32,106,228,.1); border-color: rgba(63,157,240,.4); }
.au-faq-q { display: flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 700; color: #16356b; margin: 0 0 12px; }
.au-faq-q i { color: #3f9df0; }
.au-faq-a { font-size: 14px; color: #6b7a99; line-height: 1.8; margin: 0; }

/* ===== 合作伙伴 ===== */
.au-partners { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.au-partner { background: #fff; border: 1px solid rgba(22,53,107,.08); border-radius: 14px; padding: 30px; text-align: center;
	transition: all .35s ease; }
.au-partner:hover { transform: translateY(-5px); box-shadow: 0 10px 28px rgba(32,106,228,.12); border-color: rgba(63,157,240,.4); }
.au-partner .au-partner-name { font-size: 18px; font-weight: 700; color: #16356b; letter-spacing: 1px; }

/* ===== CTA ===== */
.au-cta { background: linear-gradient(135deg, #0f1b3c 0%, #16356b 100%); padding: 90px 0; position: relative; overflow: hidden; }
.au-cta::before { content: ''; position: absolute; inset: 0;
	background: radial-gradient(circle at 80% 20%, rgba(63,157,240,.16), transparent 45%); }
.au-cta-in { position: relative; z-index: 2; text-align: center; max-width: 820px; margin: 0 auto; }
.au-cta-in .au-kicker { color: #8ecbff; }
.au-cta-in h2 { font-size: 42px; font-weight: 800; color: #fff; margin: 0 0 18px; line-height: 1.3; }
.au-cta-in h2 .hl { color: #3f9df0; }
.au-cta-in p { font-size: 17px; color: rgba(255,255,255,.7); margin: 0 0 36px; }
.au-cta-feats { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; margin-top: 34px; }
.au-cta-feats span { display: inline-flex; align-items: center; gap: 8px; color: rgba(255,255,255,.8); font-size: 15px; }
.au-cta-feats i { color: #3f9df0; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
	.au-wrap { padding-left: 28px; padding-right: 28px; }
	.au-hero-title { font-size: 44px; }
	.au-card-grid.c3, .au-card-grid.c4 { grid-template-columns: repeat(2, 1fr); }
	.au-adv-grid { grid-template-columns: repeat(2, 1fr); }
	.au-cases { grid-template-columns: repeat(2, 1fr); }
	.au-steps { grid-template-columns: repeat(2, 1fr); }
	.au-stats-grid { grid-template-columns: repeat(3, 1fr); }
	.au-partners { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
	.au-wrap { padding-left: 18px; padding-right: 18px; }
	.au-hero { min-height: 540px; padding: 150px 18px 70px; }
	.au-hero-title { font-size: 32px; }
	.au-hero-sub { font-size: 15px; }
	.au-sec-title { font-size: 30px; }
	.au-sec { padding: 60px 0; }
	.au-card-grid.c2, .au-card-grid.c3, .au-card-grid.c4 { grid-template-columns: 1fr; }
	.au-adv-grid { grid-template-columns: 1fr; }
	.au-cases { grid-template-columns: 1fr; }
	.au-steps { grid-template-columns: 1fr; }
	.au-stats-grid { grid-template-columns: repeat(2, 1fr); }
	.au-partners { grid-template-columns: 1fr; }
	.au-faq { grid-template-columns: 1fr; }
	.au-hero-actions { flex-direction: column; gap: 14px; }
	.au-hero-stats { gap: 22px; }
	.au-stat-div { display: none; }
	.au-cta-in h2 { font-size: 28px; }
}
@media (max-width: 480px) {
	.au-hero-title { font-size: 26px; }
	.au-sec-title { font-size: 26px; }
	.au-stats-grid { grid-template-columns: repeat(2, 1fr); }
	.au-cta-feats { gap: 18px; }
}