/* ==================== 顶部导航栏 ==================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h); background: rgba(255,255,255,.92);
  border-bottom: 1px solid rgba(22,119,255,.08);
  backdrop-filter: saturate(180%) blur(14px);
  transition: box-shadow .25s ease, height .25s ease;
}
.site-header.scrolled { box-shadow: 0 8px 24px rgba(15, 35, 80, .08); }
.site-header::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(22,119,255,.18), transparent); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.logo { display: inline-flex; align-items: center; color: var(--primary); min-width: 142px; }
.logo-image { width: 150px; height: 42px; display: block; object-fit: contain; object-position: left center; }
.logo-text-main { font: 900 22px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; letter-spacing: .02em; fill: var(--primary); }
.logo-text-sub { font: 700 7px/1 Arial, sans-serif; letter-spacing: .14em; fill: #667085; }
.nav-links { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a { padding: 9px 14px; border-radius: 999px; color: #2b3750; font-weight: 700; transition: color .25s ease, background .25s ease, box-shadow .25s ease; }
.pc .nav-links a:hover { color: var(--primary); background: var(--primary-light); }

/* ==================== 首屏轮播 Banner ==================== */
.hero { padding-top: calc(var(--header-h) + 8px); padding-bottom: 6px; background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%); }
.slider { position: relative; width: min(100% - 32px, var(--container)); margin: 0 auto; height: 315px; overflow: hidden; border: 2px solid #1677ff; border-radius: 18px; background: linear-gradient(135deg, #ffffff 0%, #f8fbff 58%, #eef6ff 100%); box-shadow: 0 14px 34px rgba(22,119,255,.13); }
.slides { display: flex; height: 100%; transition: transform .55s cubic-bezier(.2,.75,.2,1); cursor: grab; user-select: none; touch-action: pan-y; }
.slides.dragging { cursor: grabbing; transition: none; }
.slide { flex: 0 0 100%; height: 315px; display: flex; align-items: center; }
.slide-inner { width: 100%; padding: 0 42px; display: grid; grid-template-columns: 1fr; align-items: center; gap: 0; }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; padding: 5px 10px; border-radius: 999px; background: var(--primary-light); color: var(--primary); font-weight: 800; margin-bottom: 8px; }
.hero-title { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.12; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 8px; color: #101828; }
.hero-desc { color: var(--muted); font-size: 16px; margin-bottom: 12px; max-width: 620px; }
.hero-art { display: none; }
.hero-art::before { content: ""; position: absolute; width: 270px; height: 270px; border-radius: 50%; right: -70px; top: -70px; background: radial-gradient(circle, rgba(22,119,255,.35), rgba(22,119,255,0)); }
.hero-art::after { content: ""; position: absolute; width: 150px; height: 150px; border-radius: 34px; left: 34px; bottom: 28px; transform: rotate(-8deg); background: linear-gradient(135deg, rgba(22,119,255,.92), rgba(82,196,255,.74)); box-shadow: 0 24px 60px rgba(22,119,255,.22); }
.cloud-card { position: absolute; right: 34px; top: 46px; width: 240px; padding: 20px; border-radius: 20px; background: rgba(255,255,255,.82); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.9); box-shadow: 0 20px 50px rgba(20,70,140,.12); z-index: 2; }
.cloud-lines span { display: block; height: 9px; border-radius: 9px; background: #d7e8ff; margin-top: 12px; }
.cloud-lines span:nth-child(1) { width: 80%; background: var(--primary); } .cloud-lines span:nth-child(2) { width: 100%; } .cloud-lines span:nth-child(3) { width: 62%; }
.cloud-dots { display: flex; gap: 7px; margin-top: 16px; }
.cloud-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); opacity: .35; animation: dotPulse 1.25s infinite ease-in-out; }
.cloud-dots i:nth-child(2) { animation-delay: .16s; }
.cloud-dots i:nth-child(3) { animation-delay: .32s; }
@keyframes dotPulse { 0%, 80%, 100% { transform: translateY(0); opacity: .28; } 40% { transform: translateY(-4px); opacity: 1; } }
.tech-svg { position: absolute; left: 34px; top: 30px; width: 110px; z-index: 3; opacity: .95; }
.hero-specs { display: flex; flex-wrap: wrap; gap: 7px; margin: 10px 0 12px; }
.hero-specs span { padding: 6px 10px; border-radius: 999px; background: #f3f8ff; border: 1px solid var(--border); color: #30506f; font-size: 13px; font-weight: 800; }
.hero-specs .hot { background: linear-gradient(135deg, #e8f3ff, #fff4e6); border-color: #9dccff; color: var(--primary); box-shadow: 0 6px 16px rgba(22,119,255,.12); }
.hero-price { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; font-weight: 900; }
.month-price { display: inline-flex; align-items: baseline; gap: 4px; color: var(--primary); }
.month-price .amount { font-size: 34px; line-height: 1; color: var(--primary); text-shadow: 0 8px 22px rgba(22,119,255,.14); }
.month-price .unit { font-size: 15px; color: var(--muted); font-weight: 800; }
.trial-price { display: inline-flex; align-items: baseline; gap: 3px; padding: 8px 13px; border-radius: 14px; background: linear-gradient(135deg, #fff7e6, #fff1e8); border: 1px solid rgba(241,103,42,.22); box-shadow: 0 8px 18px rgba(241,103,42,.14); }
.trial-price .trial-amount { font-size: 24px; line-height: 1; color: #f1672a; font-weight: 950; }
.trial-price .trial-yuan { font-size: 18px; color: #d32029; font-weight: 950; }
.trial-price .trial-text { font-size: 18px; color: #172033; font-weight: 950; }
.package-only .trial-price { padding: 10px 16px; }
.package-only .trial-amount { font-size: 32px; }
.package-only .trial-yuan { font-size: 22px; }
.package-only .trial-text { font-size: 22px; }
.hero-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 16px; max-width: 520px; }
.hero-stat { padding: 10px 12px; border-radius: 14px; background: rgba(255,255,255,.72); border: 1px solid rgba(22,119,255,.12); box-shadow: 0 8px 20px rgba(15,55,120,.05); }
.hero-stat b { display: block; color: var(--primary); font-size: 18px; line-height: 1.1; }
.hero-stat span { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.slider-arrow { display: none; }
.pc .slider-arrow:hover { background: var(--primary); color: #fff; transform: translateY(-50%) scale(1.06); }
.slider-prev { left: 24px; } .slider-next { right: 24px; }
.slider-dots { position: absolute; right: 28px; bottom: 22px; display: flex; gap: 8px; z-index: 5; padding: 7px 10px; border-radius: 999px; background: rgba(255,255,255,.82); border: 1px solid rgba(22,119,255,.14); box-shadow: 0 8px 20px rgba(15,55,120,.08); backdrop-filter: blur(8px); }
.slider-dot { width: 8px; height: 8px; border-radius: 999px; background: #bdd7ff; transition: .25s; }
.slider-dot.active { width: 26px; background: var(--primary); }

/* ==================== 快捷功能按钮区 ==================== */
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.quick-card { min-height: 86px; display: flex; align-items: center; gap: 12px; padding: 16px; border: 1.5px solid #bfd5ee; border-radius: 14px; background: #fff; color: #24344d; box-shadow: 0 8px 22px rgba(15,55,120,.065); transition: .25s ease; position: relative; overflow: hidden; }
.quick-card::after { content: ""; position: absolute; width: 76px; height: 76px; border-radius: 50%; right: -30px; bottom: -34px; background: rgba(22,119,255,.08); }
.quick-card, .intro-art, .intro-point, .product-row { outline: 1px solid rgba(255,255,255,.72); outline-offset: -3px; }
.pc .quick-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-hover); color: var(--primary); }
.quick-icon { width: 58px; height: 58px; flex: 0 0 auto; border-radius: 16px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg, #ffffff, #eef7ff); border: 1.5px solid #b8d4f2; box-shadow: inset 0 0 0 1px rgba(255,255,255,.78), 0 8px 18px rgba(22,119,255,.12); overflow: hidden; }
.quick-icon svg { width: 44px; height: 44px; filter: drop-shadow(0 6px 8px rgba(22,119,255,.16)); }
.quick-card strong { display: block; font-size: 17px; }
.quick-card em { display: block; font-size: 12px; color: var(--muted); font-style: normal; margin-top: 2px; }

/* ==================== 企业介绍板块 ==================== */
.intro-wrap { display: block; }
.intro-art { min-height: 280px; border-radius: 24px; background: radial-gradient(circle at 28% 20%, rgba(53,201,255,.18), transparent 32%), linear-gradient(135deg, #f7fbff 0%, #ffffff 48%, #e9f5ff 100%); position: relative; overflow: hidden; box-shadow: var(--shadow-hover); border: 1.5px solid #b8d4f2; }
.intro-visual { width: 100%; height: 100%; min-height: 280px; display: block; }
.server-light { animation: serverPulse 1.8s infinite ease-in-out; }
.server-light:nth-child(2n) { animation-delay: .35s; }
.flow-line { stroke-dasharray: 8 8; animation: flowMove 2.8s linear infinite; }
@keyframes serverPulse { 0%,100% { opacity: .35; } 50% { opacity: 1; } }
@keyframes flowMove { to { stroke-dashoffset: -64; } }
.intro-content { display: block; }
.intro-points { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.intro-point { min-height: 76px; padding: 14px; border-radius: 14px; background: #fff; border: 1.5px solid #bfd5ee; font-weight: 900; box-shadow: 0 8px 22px rgba(15,55,120,.06); display: flex; align-items: center; }
.intro-point span { width: 26px; height: 26px; flex: 0 0 auto; margin-right: 10px; display: inline-grid; place-items: center; border-radius: 50%; background: var(--primary-light); color: var(--primary); }

/* ==================== 产品特惠卡片区 ==================== */
.products-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.product-card { position: relative; display: flex; flex-direction: column; min-height: 100%; padding: 28px; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform .25s ease, box-shadow .25s ease; overflow: hidden; }
.product-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: linear-gradient(90deg, var(--primary), #52c4ff); }
.pc .product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.product-top { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 20px; }
.product-title { font-size: 22px; line-height: 1.35; font-weight: 900; }
.badge { flex: 0 0 auto; height: 28px; padding: 0 10px; display: inline-flex; align-items: center; border-radius: 999px; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 900; }
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 18px 0 22px; }
.spec { padding: 13px 14px; border-radius: 12px; background: #f8fbff; border: 1px solid var(--border); }
.spec span { display: block; color: var(--muted); font-size: 12px; }
.spec b { display: block; margin-top: 2px; font-size: 16px; }
.product-note { color: var(--muted); margin-bottom: 18px; }
.price-row { margin-top: auto; padding-top: 20px; border-top: 1px dashed #d9e8fb; display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
.price { color: var(--primary); font-size: 30px; font-weight: 900; line-height: 1; }
.price small { font-size: 14px; color: var(--muted); font-weight: 700; }
.trial { color: #0f6b43; background: #ecfff6; border: 1px solid #c8f4dd; border-radius: 12px; padding: 8px 10px; font-size: 13px; font-weight: 800; }
.order-btn { width: 100%; margin-top: 20px; border-radius: 12px; }
.more-placeholder { margin-top: 22px; padding: 18px; border-radius: 14px; background: #fff; border: 1px dashed #b8d6ff; color: var(--muted); text-align: center; }
.product-list { display: grid; gap: 8px; }
.product-row { display: grid; grid-template-columns: minmax(210px, 1.2fr) minmax(360px, 2fr) minmax(150px, .7fr) 116px; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 12px; background: #fff; border: 1.5px solid #cadced; box-shadow: 0 6px 18px rgba(15,55,120,.055); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; position: relative; overflow: hidden; }
.product-row::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: linear-gradient(180deg, var(--primary), var(--cyan)); }
.product-row:nth-child(3n)::before { background: linear-gradient(180deg, var(--warm), #ffc069); }
.pc .product-row:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #c9defc; }
.product-row-title { min-width: 0; }
.product-row-title h3 { font-size: 15px; line-height: 1.35; font-weight: 900; color: #162033; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: -.01em; }
.product-row-title .badge { margin-top: 5px; height: 22px; font-size: 11px; }
.product-row-specs { display: flex; flex-wrap: wrap; gap: 6px; color: #42526b; font-size: 12px; }
.product-row-specs span { padding: 4px 7px; border-radius: 999px; background: #f5f9ff; border: 1px solid #c9def6; white-space: nowrap; }
.product-row-specs .hot { color: var(--primary); background: #e8f3ff; border-color: #79b9ff; font-weight: 900; }
.product-row-specs .speed { color: #7a4b00; background: #fff7e6; border-color: #ffc76b; font-weight: 900; }
.product-row-price { text-align: right; color: #f1672a; font-weight: 900; font-size: 20px; white-space: nowrap; }
.product-row-price small { display: inline-flex; align-items: center; justify-content: center; gap: 4px; margin-top: 5px; padding: 5px 10px; color: #b42318; background: linear-gradient(135deg, #fff1e8, #fff7e6); border: 1px solid rgba(241,103,42,.30); border-radius: 999px; font-size: 13px; font-weight: 950; box-shadow: 0 6px 14px rgba(241,103,42,.12); }
.product-row-price small b { display: inline-flex; align-items: center; height: 18px; padding: 0 6px; border-radius: 999px; background: linear-gradient(135deg, #f1672a, #ff9c2a); color: #fff; font-size: 11px; letter-spacing: .04em; }
.product-row .order-btn { width: 100%; margin: 0; min-height: 38px; border-radius: 10px; padding: 0 12px; font-size: 13px; }

/* 所有轮播按钮统一下移 */
.hero-copy .copy-action { transform: translateY(20px); }