/* ============ 食智汇官网 - 科技蓝·简约白 政企风格 ============ */
:root {
  --blue: #0B5BD3;
  --blue-dark: #083E97;
  --blue-deep: #062B66;
  --blue-light: #EAF1FB;
  --ink: #17263F;
  --muted: #5A6B85;
  --line: #E4EBF5;
  --bg-alt: #F4F7FB;
  --shadow: 0 6px 24px rgba(11, 91, 211, 0.08);
  --radius: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink); background: #fff; font-size: 15px; line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
i { font-style: normal; color: #E5484D; }

/* ---------- 顶部 ---------- */
.topbar { background: var(--blue-deep); color: #C9DAF2; font-size: 13px; }
.topbar-in { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar-hotline strong { color: #fff; font-size: 15px; margin-left: 4px; letter-spacing: .5px; }
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 100; }
.header-main { display: flex; align-items: center; gap: 30px; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo { height: 42px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 24px; font-weight: 700; color: var(--blue-dark); letter-spacing: 2px; }
.brand-slogan { font-size: 11px; color: var(--muted); letter-spacing: 1px; }
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a { display: block; padding: 8px 16px; font-size: 15.5px; color: var(--ink); border-radius: 6px; transition: all .2s; }
.main-nav a:hover { color: var(--blue); background: var(--blue-light); }
.main-nav > li.active > a { color: #fff; background: var(--blue); font-weight: 600; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: .2s; }

/* ---------- 轮播 ---------- */
.hero { position: relative; }
.carousel { position: relative; overflow: hidden; }
.slide { display: none; position: relative; }
.slide.on { display: block; }
.slide img { width: 100%; height: 460px; object-fit: cover; }
.slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,43,102,.72) 0%, rgba(6,43,102,.25) 60%, rgba(6,43,102,.05) 100%); }
.slide-cap { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; color: #fff; padding-bottom: 20px; }
.slide-cap h2 { font-size: 40px; letter-spacing: 2px; text-shadow: 0 2px 12px rgba(0,0,0,.25); }
.slide-cap p { font-size: 17px; margin: 10px 0 24px; opacity: .92; }
.carousel-dots { position: absolute; bottom: 18px; left: 0; right: 0; display: flex; justify-content: center; gap: 8px; z-index: 3; }
.carousel-dots button { width: 26px; height: 4px; border: 0; border-radius: 2px; background: rgba(255,255,255,.45); cursor: pointer; transition: .2s; }
.carousel-dots button.on { background: #fff; width: 38px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 10px 26px; border-radius: 6px; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: .2s; background: transparent; -webkit-appearance: none; appearance: none; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-ghost { border-color: rgba(255,255,255,.7); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.15); }
.btn-ghost.dark { border-color: var(--blue); color: var(--blue); }
.btn-ghost.dark:hover { background: var(--blue-light); }
.btn-block { display: block; width: 100%; }

/* ---------- 通用区块 ---------- */
.sec { padding: 64px 0; }
.sec-alt { background: var(--bg-alt); }
.sec-blue { background: linear-gradient(135deg, var(--blue-deep), var(--blue-dark)); color: #fff; }
.sec-blue .sec-title { color: #fff; }
.sec-blue .sec-sub { color: #B9CDEB; }
.sec-blue .sec-title::before, .sec-blue .sec-title::after { background: #6FA1E8; }
.sec-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 36px; gap: 20px; flex-wrap: wrap; }
.sec-title { font-size: 30px; letter-spacing: 1px; position: relative; padding-bottom: 14px; }
.sec-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 44px; height: 4px; background: var(--blue); border-radius: 2px; }
.sec-blue .sec-title::after { background: #6FA1E8; }
.sec-sub { color: var(--muted); margin-top: 8px; font-size: 14.5px; }
.sec-more { color: var(--blue); font-size: 14.5px; white-space: nowrap; }
.sec-more:hover { color: var(--blue-dark); }
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 卡片 ---------- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .25s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #C9DAF2; }
.card-link { display: block; }
.card-img { position: relative; overflow: hidden; aspect-ratio: 16/10; background: var(--blue-light); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: .4s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-flag { position: absolute; left: 10px; top: 10px; background: rgba(11,91,211,.92); color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 4px; }
.card-pin { position: absolute; right: 10px; top: 10px; background: #E5484D; color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 4px; }
.card-body { padding: 18px 18px 20px; }
.card-body time { color: var(--muted); font-size: 13px; }
.card-body h3 { font-size: 17px; margin: 6px 0 8px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-body p { color: var(--muted); font-size: 14px; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-more { display: inline-block; margin-top: 12px; color: var(--blue); font-size: 14px; }

/* 首页类目卡 */
.cat-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; padding-bottom: 18px; transition: .25s; display: block; }
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cat-img { aspect-ratio: 16/9; overflow: hidden; }
.cat-img img { width: 100%; height: 100%; object-fit: cover; }
.cat-card h3 { font-size: 17px; margin: 14px 16px 6px; color: var(--blue-dark); }
.cat-card p { font-size: 13.5px; color: var(--muted); margin: 0 16px; line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cat-link { display: inline-block; margin: 10px 16px 0; color: var(--blue); font-size: 14px; }

/* 客户群体/优势 */
.client-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px; transition: .25s; }
.client-card:hover { box-shadow: var(--shadow); border-color: #C9DAF2; }
.client-card h3 { font-size: 16.5px; color: var(--blue-dark); margin-bottom: 8px; }
.client-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
.sec-alt .client-card { border-color: transparent; box-shadow: 0 2px 14px rgba(11,91,211,.06); }
.adv-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 26px 22px; }
.adv-num { font-size: 30px; font-weight: 700; color: #6FA1E8; opacity: .85; }
.adv-card h3 { font-size: 17px; margin: 8px 0; }
.adv-card p { font-size: 13.5px; color: #C9DAF2; line-height: 1.7; }

/* 企业简介 */
.intro-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.intro-actions { margin-top: 26px; display: flex; gap: 14px; }
.intro-img img { border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 4/3; object-fit: cover; width: 100%; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; align-items: center; }
.chip { background: var(--blue-light); color: var(--blue-dark); font-size: 12px; padding: 3px 10px; border-radius: 20px; }
.chip-pin { background: #FDEBEA; color: #E5484D; }

/* ---------- 页头横幅/面包屑 ---------- */
.page-banner { background: linear-gradient(120deg, var(--blue-deep) 0%, var(--blue-dark) 60%, #1057B8 100%); color: #fff; padding: 58px 0; }
.page-banner h1 { font-size: 32px; letter-spacing: 2px; }
.page-banner p { margin-top: 8px; color: #B9CDEB; font-size: 15px; }
.crumbs { background: var(--bg-alt); border-bottom: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
.crumbs .wrap { height: 44px; display: flex; align-items: center; gap: 8px; }
.crumbs a:hover { color: var(--blue); }
.crumbs .sep { color: #B4C2D8; }
.crumbs span:last-child { color: var(--ink); }

/* 筛选条 */
.filter-bar { padding: 18px 20px 0; }
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 6px 0; }
.filter-label { color: var(--muted); font-size: 13.5px; flex-shrink: 0; }
.filter-chip { padding: 5px 16px; border: 1px solid var(--line); border-radius: 20px; font-size: 13.5px; color: var(--ink); background: #fff; transition: .2s; }
.filter-chip:hover { border-color: var(--blue); color: var(--blue); }
.filter-chip.on { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ---------- 详情页 ---------- */
.detail { background: #fff; }
.detail-top { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.detail-img { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--blue-light); }
.detail-img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.detail-info h1 { font-size: 26px; line-height: 1.45; }
.detail-cat { color: var(--muted); font-size: 14px; margin-top: 8px; }
.detail-summary { margin-top: 14px; color: var(--muted); line-height: 1.9; }
.detail-actions { margin-top: 26px; display: flex; gap: 14px; }
.detail-head { margin-bottom: 22px; }
.detail-head h1 { font-size: 26px; line-height: 1.5; }
.detail-meta { display: flex; gap: 12px; align-items: center; margin-top: 12px; color: var(--muted); font-size: 14px; }
.detail-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 24px; max-height: 430px; }
.detail-cover img { width: 100%; object-fit: cover; }
.detail-rich { min-height: 120px; }
.blk { margin-bottom: 34px; }
.blk-title { font-size: 20px; padding-left: 12px; border-left: 4px solid var(--blue); margin-bottom: 16px; }
.page-blocks .blk-title { font-size: 22px; }
.related { margin-top: 44px; }

/* 富文本 */
.rich { line-height: 1.9; color: #2A3A55; }
.rich p { margin: 10px 0; }
.rich ul, .rich ol { margin: 10px 0 10px 22px; }
.rich ul { list-style: disc; }
.rich ol { list-style: decimal; }
.rich li { margin: 6px 0; }
.rich img { border-radius: 8px; margin: 12px 0; }
.rich b, .rich strong { color: var(--blue-dark); }

/* ---------- 内容块（关于我们等） ---------- */
.blk-it { display: grid; grid-template-columns: 1.15fr 1fr; gap: 36px; align-items: center; }
.blk-it.reverse { direction: rtl; }
.blk-it .blk-text { direction: ltr; }
.blk-img img { border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.blk-img-full img { border-radius: var(--radius); box-shadow: var(--shadow); max-height: 420px; object-fit: cover; width: 100%; margin-bottom: 14px; }
.steps { counter-reset: step; }
.steps li { display: flex; gap: 18px; padding: 16px 0; border-bottom: 1px dashed var(--line); align-items: flex-start; }
.steps li:last-child { border-bottom: 0; }
.step-k { flex-shrink: 0; width: 46px; height: 46px; border-radius: 50%; background: var(--blue-light); color: var(--blue-dark); font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.steps h3 { font-size: 16px; margin-bottom: 2px; }
.steps p { color: var(--muted); font-size: 13.5px; }
.honor-card .card-img { aspect-ratio: 4/3; }
.honor-card h3 { font-size: 16px; }
.honor-card p { font-size: 13px; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: start; }
.contact-item { background: var(--bg-alt); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 14px; }
.contact-item h3 { font-size: 15px; color: var(--blue-dark); margin-bottom: 6px; }
.contact-item p { font-size: 14.5px; color: #2A3A55; }
.contact-item .qr { margin-top: 10px; border-radius: 6px; border: 1px solid var(--line); }
.contact-form-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--ink); }
.form-row input, .form-row textarea { width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; font-size: 14.5px; font-family: inherit; transition: .2s; background: #FBFCFE; }
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,91,211,.1); background: #fff; }
.captcha-row { display: flex; gap: 12px; align-items: center; }
.captcha-row input { max-width: 140px; }
.captcha-q { background: var(--blue-light); color: var(--blue-dark); font-weight: 700; padding: 8px 14px; border-radius: 6px; letter-spacing: 2px; user-select: none; }
.form-tip { margin-top: 12px; font-size: 14px; min-height: 20px; }
.form-tip.ok { color: #148A4C; }
.form-tip.err { color: #E5484D; }
.map-wrap { margin-top: 34px; }
.map-box { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.map-box iframe { width: 100%; height: 360px; border: 0; display: block; }
.map-placeholder svg { width: 100%; height: auto; display: block; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--blue-deep); color: #A8BEE0; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 40px; padding: 48px 20px 40px; }
.footer-col h4 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-col p, .footer-col li { font-size: 13.5px; line-height: 2; }
.footer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 20px; }
.footer-nav a:hover, .footer-contact li:hover { color: #fff; }
.footer-bar { border-top: 1px solid rgba(255,255,255,.12); padding: 16px 0; font-size: 13px; text-align: center; }
.footer-icp { color: #A8BEE0; }
.footer-icp:hover { color: #fff; text-decoration: underline; }

/* ---------- 弹窗 ---------- */
.popup-mask { position: fixed; inset: 0; background: rgba(9,20,40,.5); z-index: 999; display: flex; align-items: center; justify-content: center; padding: 20px; }
.popup-box { background: #fff; border-radius: 12px; max-width: 520px; width: 100%; padding: 28px; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.popup-box h3 { color: var(--blue-dark); font-size: 19px; margin-bottom: 10px; }
.popup-content { max-height: 50vh; overflow: auto; font-size: 14.5px; line-height: 1.8; color: #2A3A55; }
.popup-close { position: absolute; right: 12px; top: 10px; background: none; border: 0; font-size: 26px; color: #97A6BE; cursor: pointer; }

/* ---------- 其他 ---------- */
.empty-tip { padding: 60px 0; text-align: center; color: var(--muted); background: #fff; border: 1px dashed var(--line); border-radius: var(--radius); }
#backTop { position: fixed; right: 24px; bottom: 32px; width: 44px; height: 44px; border-radius: 8px; background: var(--blue); color: #fff; border: 0; font-size: 20px; cursor: pointer; opacity: 0; pointer-events: none; transition: .25s; box-shadow: var(--shadow); z-index: 90; }
#backTop.show { opacity: 1; pointer-events: auto; }

/* ---------- 移动端 ---------- */
@media (max-width: 1020px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .intro-grid, .detail-top, .blk-it, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .slide img { height: 340px; }
  .slide-cap h2 { font-size: 30px; }
}
@media (max-width: 720px) {
  .topbar-in { justify-content: center; }
  .topbar-slogan { display: none; }
  .header-main { height: 62px; gap: 12px; }
  .brand-name { font-size: 20px; }
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; gap: 0; padding: 8px 14px 14px; border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(9,20,40,.08); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 10px; border-radius: 6px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .sec { padding: 44px 0; }
  .slide img { height: 240px; }
  .slide-cap h2 { font-size: 23px; }
  .slide-cap p { font-size: 14px; margin-bottom: 14px; }
  .sec-title { font-size: 24px; }
  .page-banner { padding: 40px 0; }
  .page-banner h1 { font-size: 25px; }
  .detail-info h1 { font-size: 21px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; padding: 34px 20px 28px; }
  .brand-slogan { display: none; }
}

/* ==================== 培训服务板块 v2 ==================== */
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { display: block; width: 100%; text-align: center; }

/* 图标全局兜底：任何情况下不允许 SVG 失控放大 */
.tr-ico { width: 20px; height: 20px; flex-shrink: 0; display: inline-block; vertical-align: middle; }

/* Hero：与全站 page-banner 同一设计语言 */
.tr-hero { background: linear-gradient(120deg, var(--blue-deep) 0%, var(--blue-dark) 60%, #1057B8 100%); color: #fff; position: relative; overflow: hidden; }
.tr-hero::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(115deg, rgba(255,255,255,.04) 0 2px, transparent 2px 110px); pointer-events: none; }
.tr-hero::after { content: ""; position: absolute; right: -170px; top: -130px; width: 540px; height: 540px; border-radius: 50%; background: radial-gradient(circle, rgba(96,168,255,.26), transparent 66%); pointer-events: none; }
.tr-hero-deco { position: absolute; right: -140px; bottom: -110px; width: 640px; height: 150px; border-radius: 75px; background: linear-gradient(90deg, rgba(110,168,255,.32), rgba(110,168,255,0)); transform: rotate(-33deg); pointer-events: none; }
.tr-hero-deco.d2 { right: 240px; bottom: -190px; width: 460px; height: 110px; border-radius: 55px; background: linear-gradient(90deg, rgba(110,168,255,.18), rgba(110,168,255,0)); }
.tr-hero-in { display: grid; grid-template-columns: 1fr 330px; gap: 48px; align-items: center; padding: 68px 20px 60px; position: relative; z-index: 1; }
.tr-eyebrow { font-size: 13px; letter-spacing: 2px; color: #9FC3F5; margin-bottom: 14px; display: inline-flex; align-items: center; gap: 10px; }
.tr-eyebrow::before { content: ""; width: 26px; height: 3px; background: #6EA8FF; border-radius: 2px; }
.tr-hero h1 { font-size: 36px; line-height: 1.35; font-weight: 700; letter-spacing: .5px; }
.tr-hero h1 em { font-style: normal; display: block; font-size: 23px; font-weight: 400; color: #CFE2FF; margin-top: 10px; }
.tr-hero-split { display: none; }
.tr-hero-desc { margin-top: 16px; font-size: 15.5px; line-height: 1.9; color: #D5E4FA; max-width: 660px; }
.tr-tags { margin: 22px 0 4px; display: grid; gap: 9px; }
.tr-tags li { display: flex; gap: 9px; align-items: flex-start; font-size: 14.5px; color: #E8F2FF; }
.tr-tags .tr-ico { width: 17px; height: 17px; margin-top: 4px; color: #7FE3B0; }
.tr-cta { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.tr-hero .btn-primary { background: #fff; color: var(--blue-dark); box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.tr-hero .btn-primary:hover { background: #EAF1FB; }
.tr-hero .btn-ghost { border: 1px solid rgba(255,255,255,.55); color: #fff; }
.tr-hero .btn-ghost:hover { background: rgba(255,255,255,.14); }
.tr-hero-note { margin-top: 18px; font-size: 12.5px; color: #9FC3F5; }
.tr-hero-card { background: rgba(255,255,255,.97); color: var(--ink); border-radius: 14px; padding: 26px 24px 24px; box-shadow: 0 18px 44px rgba(3,25,60,.28); border-top: 4px solid var(--blue); }
.tr-hero-card h2 { font-size: 17px; color: var(--blue-dark); margin-bottom: 16px; }
.tr-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 10px; }
.tr-stats li { display: flex; flex-direction: column; }
.tr-stats strong { font-size: 28px; color: var(--blue); line-height: 1.2; font-weight: 700; }
.tr-stats span { font-size: 12.5px; color: var(--muted); }
.tr-card-tip { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--muted); }
.tr-delivery { font-size: 14px; color: var(--ink); line-height: 1.8; margin-bottom: 14px; }
.tr-side-list { display: grid; gap: 10px; margin-bottom: 18px; }
.tr-side-list dt { font-size: 12px; color: var(--muted); }
.tr-side-list dd { font-size: 13.5px; }
.tr-hero-sub .tr-hero-in { padding-top: 54px; padding-bottom: 50px; }

/* 痛点 */
.tr-pain-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.tr-pain { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 18px; position: relative; transition: .2s; }
.tr-pain:hover { border-color: #BBD3F3; box-shadow: var(--shadow); transform: translateY(-2px); }
.tr-pain-no { font-size: 26px; font-weight: 700; color: #D6E4F7; display: block; line-height: 1; margin-bottom: 10px; }
.tr-pain h3 { font-size: 15px; margin-bottom: 8px; color: var(--blue-dark); }
.tr-pain p { font-size: 13px; color: var(--muted); line-height: 1.8; }

/* 服务矩阵 */
.tr-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tr-matrix-4 { grid-template-columns: repeat(4, 1fr); }
.tr-mcard { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 20px; display: flex; flex-direction: column; transition: .2s; }
.tr-mcard:hover { border-color: #BBD3F3; box-shadow: var(--shadow); }
.tr-mcard-top { display: flex; gap: 12px; align-items: flex-start; }
.tr-micon { width: 44px; height: 44px; border-radius: 10px; background: var(--blue-light); color: var(--blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.tr-micon .tr-ico { width: 22px; height: 22px; }
.tr-mcard h3 { font-size: 16px; line-height: 1.5; }
.tr-mcard h3 a:hover { color: var(--blue); }
.tr-mcard-desc { font-size: 13px; color: var(--muted); line-height: 1.8; margin-top: 6px; }
.tr-mmeta { margin: 16px 0 14px; display: grid; gap: 8px; border-top: 1px dashed var(--line); padding-top: 12px; }
.tr-mmeta > div { display: flex; gap: 10px; font-size: 12.5px; }
.tr-mmeta dt { color: var(--muted); width: 60px; flex-shrink: 0; }
.tr-mmeta dd { color: var(--ink); }
.tr-mlink { margin-top: auto; color: var(--blue); font-size: 13.5px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.tr-mlink .tr-ico { width: 15px; height: 15px; transition: .2s; }
.tr-mlink:hover .tr-ico { transform: translateX(3px); }

/* 交付保障 */
.tr-guar-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: 26px; }
.tr-teachers { display: grid; gap: 16px; }
.tr-teacher { display: flex; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.tr-avatar { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg,#0B5BD3,#083E97); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 19px; letter-spacing: 1px; flex-shrink: 0; overflow: hidden; }
.tr-avatar img { width: 100%; height: 100%; object-fit: cover; }
.tr-teacher h3 { font-size: 15.5px; }
.tr-teacher-title { font-size: 12.5px; color: var(--blue); margin: 3px 0 6px; }
.tr-teacher-desc { font-size: 13px; color: var(--muted); line-height: 1.8; }
.tr-deliver { background: var(--blue-light); border-radius: 12px; padding: 24px 22px; }
.tr-deliver h3 { font-size: 16px; color: var(--blue-dark); margin-bottom: 14px; }
.tr-check { display: grid; gap: 11px; }
.tr-check li { display: flex; gap: 9px; align-items: flex-start; font-size: 13.5px; line-height: 1.75; }
.tr-check .tr-ico { width: 16px; height: 16px; color: var(--blue); flex-shrink: 0; margin-top: 4px; }
.tr-deliver-tip { margin-top: 14px; font-size: 12px; color: var(--muted); line-height: 1.7; }
.tr-check-2 { grid-template-columns: 1fr 1fr; }

/* 案例 */
.tr-filter { padding: 0 0 18px; }
.tr-case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tr-case { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 20px; }
.tr-case-tag { display: inline-block; background: var(--blue-light); color: var(--blue-dark); font-size: 12px; padding: 2px 10px; border-radius: 12px; margin-bottom: 10px; }
.tr-case h3 { font-size: 15.5px; margin-bottom: 10px; }
.tr-case p { font-size: 13px; color: var(--muted); line-height: 1.85; margin-top: 6px; }
.tr-case b { color: var(--ink); font-weight: 600; }

/* FAQ */
.tr-faq-wrap { max-width: 900px; }
.tr-faq { display: grid; gap: 10px; }
.tr-faq-item, .tr-chapter { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.tr-faq-item summary, .tr-chapter summary { list-style: none; cursor: pointer; padding: 16px 18px; display: flex; align-items: center; gap: 10px; font-size: 14.5px; font-weight: 500; }
.tr-faq-item summary::-webkit-details-marker, .tr-chapter summary::-webkit-details-marker { display: none; }
.tr-faq-item summary span { color: var(--blue); font-weight: 700; flex-shrink: 0; }
.tr-plus { margin-left: auto; width: 14px; height: 14px; position: relative; flex-shrink: 0; }
.tr-plus::before, .tr-plus::after { content: ""; position: absolute; background: var(--muted); transition: .2s; }
.tr-plus::before { left: 0; top: 6px; width: 14px; height: 1.6px; }
.tr-plus::after { left: 6px; top: 0; width: 1.6px; height: 14px; }
details[open] .tr-plus::after { transform: scaleY(0); }
details[open] > summary { color: var(--blue-dark); }
.tr-faq-a { padding: 0 18px 18px 40px; }
.tr-faq-a p { font-size: 13.5px; color: var(--muted); line-height: 1.9; }

/* 资料包 */
.tr-download { display: grid; grid-template-columns: 1.4fr .7fr; gap: 30px; align-items: center; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--blue); border-radius: 12px; padding: 32px 34px; }
.tr-download h2 { font-size: 22px; color: var(--blue-dark); }
.tr-download-text > p { font-size: 13.5px; color: var(--muted); margin-top: 8px; line-height: 1.85; }
.tr-download-list { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.tr-download-list li { display: flex; gap: 7px; align-items: center; background: var(--bg-alt); border-radius: 8px; padding: 7px 12px; font-size: 12.5px; color: var(--ink); }
.tr-download-list span { color: var(--blue); font-weight: 700; }
.tr-download-act { text-align: center; }
.tr-download-act p { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* 底部 CTA */
.tr-bottom-cta { background: linear-gradient(110deg,#062B66,#0B5BD3); color: #fff; padding: 44px 0; }
.tr-bottom-cta .wrap { display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.tr-bottom-cta h2 { font-size: 24px; }
.tr-bottom-cta p { font-size: 13.5px; color: #CFE2FF; margin-top: 8px; }
.tr-bottom-cta .btn-ghost { border: 1px solid rgba(255,255,255,.6); color: #fff; }
.tr-bottom-cta .btn-ghost:hover { background: rgba(255,255,255,.14); }

/* 内链与免责 */
.tr-news { display: grid; gap: 2px; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.tr-news li + li { border-top: 1px solid var(--line); }
.tr-news a { display: flex; align-items: center; gap: 14px; padding: 14px 18px; transition: .2s; }
.tr-news a:hover { background: #F8FBFF; }
.tr-news-cat { font-size: 12px; color: var(--blue); background: var(--blue-light); padding: 2px 9px; border-radius: 10px; flex-shrink: 0; }
.tr-news-title { font-size: 14px; flex: 1; }
.tr-news time { font-size: 12px; color: var(--muted); flex-shrink: 0; }
.tr-disclaimer { margin-top: 22px; font-size: 12px; color: #8593A8; line-height: 1.8; padding-top: 14px; border-top: 1px dashed var(--line); }

/* 落地页：收益与大纲 */
.tr-benefit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.tr-benefit { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 24px 22px; }
.tr-benefit h3 { font-size: 16px; color: var(--blue-dark); margin-bottom: 14px; padding-left: 10px; border-left: 3px solid var(--blue); }
.tr-syllabus-wrap { max-width: 960px; }
.tr-syllabus { display: grid; gap: 10px; }
.tr-chapter summary { font-size: 15px; }
.tr-ch-no { color: var(--blue); font-weight: 700; font-size: 13px; letter-spacing: 1px; }
.tr-chapter ul { padding: 0 20px 18px 52px; display: grid; gap: 7px; }
.tr-chapter li { font-size: 13.5px; color: var(--muted); line-height: 1.8; position: relative; }
.tr-chapter li::before { content: ""; position: absolute; left: -14px; top: 10px; width: 4px; height: 4px; border-radius: 50%; background: #B9CDE9; }
.tr-deliver-full { background: var(--blue-light); border-radius: 14px; padding: 32px 34px; display: flex; align-items: center; gap: 30px; justify-content: space-between; }
.tr-deliver-full .sec-sub { margin: 8px 0 18px; }
.tr-teachers-row { grid-template-columns: repeat(3, 1fr); }

/* 首页培训入口 */
.tr-home-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.tr-home-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px 16px; display: flex; flex-direction: column; gap: 8px; min-height: 150px; transition: .2s; }
.tr-home-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.tr-home-name { font-size: 15px; font-weight: 600; color: var(--blue-dark); }
.tr-home-desc { font-size: 12.5px; color: var(--muted); line-height: 1.75; }
.tr-home-more { margin-top: auto; font-size: 12.5px; color: var(--blue); }

/* 留资弹窗 */
.lead-mask { position: fixed; inset: 0; background: rgba(6,25,55,.62); z-index: 900; display: flex; align-items: center; justify-content: center; padding: 20px; }
.lead-box { background: #fff; border-radius: 16px; width: 100%; max-width: 560px; max-height: 92vh; overflow-y: auto; padding: 30px 30px 26px; position: relative; box-shadow: 0 24px 60px rgba(3,20,50,.35); }
.lead-close { position: absolute; right: 14px; top: 10px; background: none; border: 0; font-size: 26px; line-height: 1; color: #93A2B8; cursor: pointer; }
.lead-head h3 { font-size: 21px; color: var(--blue-dark); }
.lead-head p { font-size: 13px; color: var(--muted); margin-top: 6px; }
.lead-form { margin-top: 18px; display: grid; gap: 13px; }
.lead-row { display: grid; gap: 6px; }
.lead-row-2 { grid-template-columns: 1fr 1fr; gap: 12px; }
.lead-row > div { display: grid; gap: 6px; }
.lead-row label { font-size: 13px; color: var(--ink); font-weight: 500; }
.lead-row input, .lead-row select, .lead-row textarea { width: 100%; border: 1px solid #D7E1EF; border-radius: 8px; padding: 10px 12px; font-size: 14px; font-family: inherit; color: var(--ink); background: #fff; transition: .2s; }
.lead-row input:focus, .lead-row select:focus, .lead-row textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,91,211,.10); }
.lead-hp { position: absolute; left: -9999px; opacity: 0; height: 0; }
.lead-tip { font-size: 12px; color: var(--muted); text-align: center; }
.lead-tip.err { color: #E5484D; }
.lead-tip.ok { color: #1E9E5A; }
.lead-ok { text-align: center; padding: 18px 6px 6px; }
.lead-ok-ico { width: 56px; height: 56px; border-radius: 50%; background: #E5F5EC; color: #1E9E5A; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.lead-ok-ico .tr-ico { width: 28px; height: 28px; }
.lead-ok h3 { font-size: 20px; color: var(--blue-dark); }
.lead-ok p { font-size: 13.5px; color: var(--muted); margin: 8px 0 18px; line-height: 1.8; }

/* 悬浮顾问 */
.tr-float { position: fixed; right: 22px; bottom: 96px; z-index: 800; }
.tr-float-btn { display: flex; align-items: center; gap: 8px; background: var(--blue); color: #fff; border: 0; border-radius: 26px; padding: 11px 18px; font-size: 13.5px; cursor: pointer; box-shadow: 0 8px 24px rgba(11,91,211,.35); font-family: inherit; }
.tr-float-btn .tr-ico { width: 17px; height: 17px; }
.tr-float-card { position: absolute; right: 0; bottom: 56px; width: 240px; background: #fff; border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 16px 40px rgba(3,25,60,.18); padding: 18px; text-align: center; }
.tr-float-card h4 { font-size: 14.5px; color: var(--blue-dark); margin-bottom: 10px; }
.tr-float-card img { margin: 0 auto 10px; border-radius: 8px; }
.tr-float-card p { font-size: 13px; margin-bottom: 4px; }
.tr-float-card .muted { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.tr-float-qr { width: 120px; height: 120px; margin: 0 auto 10px; border: 1px dashed #C9D8EC; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.tr-float-qr .tr-ico { width: 22px; height: 22px; color: var(--blue); }

@media (max-width: 1020px) {
  .tr-hero-in { grid-template-columns: 1fr; gap: 26px; padding: 44px 20px 40px; }
  .tr-hero h1 { font-size: 28px; }
  .tr-hero h1 em { font-size: 19px; }
  .tr-hero-card { max-width: 480px; }
  .tr-pain-grid { grid-template-columns: repeat(2, 1fr); }
  .tr-matrix, .tr-matrix-4 { grid-template-columns: repeat(2, 1fr); }
  .tr-guar-grid { grid-template-columns: 1fr; }
  .tr-case-grid { grid-template-columns: 1fr 1fr; }
  .tr-home-grid { grid-template-columns: repeat(3, 1fr); }
  .tr-teachers-row { grid-template-columns: 1fr; }
  .tr-deliver-full { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  .tr-hero-in { padding: 34px 16px 30px; }
  .tr-hero h1 { font-size: 23px; }
  .tr-hero h1 em { font-size: 16px; }
  .tr-hero-desc { font-size: 14px; }
  .tr-cta { flex-direction: column; }
  .tr-cta .btn { width: 100%; }
  .tr-pain-grid, .tr-matrix, .tr-matrix-4, .tr-case-grid, .tr-home-grid, .tr-benefit-grid, .tr-check-2 { grid-template-columns: 1fr; }
  .tr-download { grid-template-columns: 1fr; padding: 22px; }
  .tr-download-act .btn { width: 100%; }
  .tr-bottom-cta { padding: 32px 0; }
  .tr-bottom-cta h2 { font-size: 19px; }
  .tr-bottom-cta .btn { width: 100%; }
  .tr-news a { flex-wrap: wrap; gap: 8px; }
  .tr-news-title { flex: 1 0 100%; order: 3; }
  .tr-float { right: 14px; bottom: 84px; }
  .tr-float-btn span { display: none; }
  .tr-float-btn { border-radius: 50%; padding: 13px; }
  .lead-box { padding: 24px 18px 20px; }
  .lead-row-2 { grid-template-columns: 1fr; }
  .tr-deliver-full { padding: 22px; }
}

/* ==================== 导航下拉子菜单 ==================== */
.main-nav > li { position: relative; }
.main-nav > li > a { display: flex; align-items: center; gap: 4px; }
.main-nav > li.active > a, .main-nav > li.child-active > a { color: #fff; background: var(--blue); font-weight: 600; }
.nav-caret { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; margin-left: 3px; opacity: .65; transition: transform .2s; }
.main-nav > li.has-sub:hover .nav-caret { transform: rotate(180deg); }
.sub-nav { position: absolute; top: calc(100% + 8px); left: 0; min-width: 168px; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 14px 34px rgba(9,20,40,.13); padding: 6px; opacity: 0; visibility: hidden; transform: translateY(6px); transition: .18s; z-index: 130; }
.sub-nav::before { content: ""; position: absolute; top: -9px; left: 0; right: 0; height: 9px; }
.main-nav > li.has-sub:hover .sub-nav, .main-nav > li.has-sub:focus-within .sub-nav { opacity: 1; visibility: visible; transform: translateY(0); }
.sub-nav a { display: block; padding: 9px 13px; border-radius: 6px; font-size: 14.5px; color: var(--ink); white-space: nowrap; }
.sub-nav a:hover { background: var(--blue-light); color: var(--blue); }
.sub-nav a.on { background: var(--blue-light); color: var(--blue); font-weight: 600; }
.footer-nav li.sub a { padding-left: 10px; opacity: .82; }

/* ==================== 服务支持板块 ==================== */
.sp-ico { width: 18px; height: 18px; flex-shrink: 0; display: inline-block; vertical-align: middle; }
.sp-hero { background: linear-gradient(120deg, var(--blue-deep) 0%, var(--blue-dark) 58%, #1057B8 100%); color: #fff; position: relative; overflow: hidden; }
.sp-hero::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(115deg, rgba(255,255,255,.045) 0 2px, transparent 2px 120px); pointer-events: none; }
.sp-hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(circle at 78% 30%, #000, transparent 72%); -webkit-mask-image: radial-gradient(circle at 78% 30%, #000, transparent 72%); pointer-events: none; }
.sp-hero-deco { position: absolute; right: -180px; top: -140px; width: 560px; height: 560px; border-radius: 50%; background: radial-gradient(circle, rgba(96,168,255,.28), transparent 66%); pointer-events: none; }
.sp-hero-in { position: relative; z-index: 1; padding: 56px 20px 52px; }
.sp-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 12.5px; letter-spacing: 2px; color: #9FC3F5; margin-bottom: 12px; }
.sp-eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 2px; background: #6EA8FF; }
.sp-hero h1 { font-size: 34px; line-height: 1.35; letter-spacing: .5px; }
.sp-hero-desc { margin-top: 14px; font-size: 15.5px; line-height: 1.9; color: #D5E4FA; max-width: 720px; }
.sp-hero-tags { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 20px; }
.sp-hero-tags li { display: flex; align-items: center; gap: 7px; font-size: 14px; color: #E8F2FF; }
.sp-hero-tags .sp-ico { width: 15px; height: 15px; color: #7FE3B0; }
.sp-hero-cta { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.sp-hero-note { margin-top: 16px; font-size: 12.5px; color: #9FC3F5; }

/* 模块切换 */
.sp-tabs { background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 2px 10px rgba(11,91,211,.04); position: relative; z-index: 2; }
.sp-tabs .wrap { display: flex; gap: 4px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sp-tab { display: inline-flex; align-items: center; gap: 7px; padding: 16px 20px; font-size: 15px; color: var(--muted); border-bottom: 3px solid transparent; white-space: nowrap; transition: .2s; }
.sp-tab .sp-ico { width: 17px; height: 17px; }
.sp-tab:hover { color: var(--blue); }
.sp-tab.on { color: var(--blue); border-bottom-color: var(--blue); font-weight: 600; }

.sp-sec { padding: 60px 0; }
.sp-sec-alt { background: var(--bg-alt); }
.sp-sec-tight { padding-top: 40px; }
.sp-disclaimer { margin: 34px auto 0; padding-top: 16px; border-top: 1px dashed var(--line); font-size: 12.5px; color: #8593A8; line-height: 1.9; }
.sp-note { margin-top: 16px; font-size: 12.5px; color: var(--muted); line-height: 1.9; }

/* 总览模块卡 */
.sp-mod-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
.sp-mod { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 28px 22px 22px; transition: .22s; display: flex; flex-direction: column; }
.sp-mod:hover { transform: translateY(-4px); box-shadow: 0 16px 38px rgba(11,91,211,.12); border-color: #C1D8F5; }
.sp-mod-no { position: absolute; right: 18px; top: 16px; font-size: 26px; font-weight: 700; color: #E4EDF9; line-height: 1; }
.sp-mod-ico { width: 46px; height: 46px; border-radius: 12px; background: var(--blue-light); color: var(--blue); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.sp-mod-ico .sp-ico { width: 23px; height: 23px; }
.sp-mod h2 { font-size: 18px; color: var(--blue-dark); margin-bottom: 8px; }
.sp-mod p { font-size: 13px; color: var(--muted); line-height: 1.8; }
.sp-mod-list { margin: 14px 0 18px; display: grid; gap: 7px; }
.sp-mod-list li { display: flex; gap: 7px; font-size: 12.5px; color: #46586F; align-items: flex-start; }
.sp-mod-list .sp-ico { width: 14px; height: 14px; color: var(--blue); margin-top: 3px; }
.sp-mod-more { margin-top: auto; font-size: 13.5px; color: var(--blue); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.sp-mod-more .sp-ico { width: 15px; height: 15px; transition: .2s; }
.sp-mod:hover .sp-mod-more .sp-ico { transform: translateX(3px); }

/* 热门问答列表 */
.sp-hot { display: grid; gap: 2px; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.sp-hot-item { display: flex; align-items: center; gap: 12px; padding: 15px 20px; transition: .18s; }
.sp-hot-item + .sp-hot-item { border-top: 1px solid var(--line); }
.sp-hot-item:hover { background: #F7FAFF; }
.sp-hot-cat { flex-shrink: 0; font-size: 11.5px; color: var(--blue); background: var(--blue-light); padding: 3px 9px; border-radius: 10px; }
.sp-hot-q { flex: 1; font-size: 14.5px; color: var(--ink); }
.sp-hot-item:hover .sp-hot-q { color: var(--blue); }
.sp-hot-item .sp-ico { width: 15px; height: 15px; color: #B4C2D8; flex-shrink: 0; }

/* 资料小卡 */
.sp-doc-mini { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.sp-doc-mini-item { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; transition: .2s; }
.sp-doc-mini-item:hover { border-color: #C1D8F5; box-shadow: var(--shadow); }
.sp-doc-mini-t { flex: 1; font-size: 14px; color: var(--ink); }
.sp-doc-mini-m { font-size: 12px; color: var(--muted); flex-shrink: 0; }

/* 文件类型角标 */
.sp-ext { flex-shrink: 0; width: 44px; height: 44px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 10.5px; font-weight: 700; letter-spacing: .5px; background: var(--blue-light); color: var(--blue); }
.sp-ext-csv { background: #E8F7EE; color: #1E8E4E; }
.sp-ext-md, .sp-ext-txt { background: #EAF1FB; color: #0B5BD3; }
.sp-ext-svg { background: #FFF3E4; color: #B4610C; }
.sp-ext-pdf { background: #FDECEC; color: #C0342F; }
.sp-ext-xlsx, .sp-ext-xls { background: #E8F7EE; color: #1E8E4E; }

/* 售后：服务范围 */
.sp-scope-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.sp-scope { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 24px 20px; }
.sp-scope-ico { width: 42px; height: 42px; border-radius: 10px; background: var(--blue-light); color: var(--blue); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.sp-scope-ico .sp-ico { width: 21px; height: 21px; }
.sp-scope h3 { font-size: 16px; color: var(--blue-dark); margin-bottom: 6px; }
.sp-scope p { font-size: 13px; color: var(--muted); line-height: 1.8; }
.sp-mini-list { margin-top: 12px; display: grid; gap: 6px; }
.sp-mini-list li { font-size: 12.5px; color: #4C5D74; padding-left: 12px; position: relative; }
.sp-mini-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 4px; height: 4px; border-radius: 50%; background: #9DBBE3; }

/* 售后：流程 */
.sp-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; counter-reset: f; }
.sp-flow li { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 18px; position: relative; }
.sp-flow li::after { content: ""; position: absolute; right: -14px; top: 50%; width: 14px; height: 1px; background: #CFDEED; }
.sp-flow li:last-child::after { display: none; }
.sp-flow-k { display: inline-block; font-size: 13px; font-weight: 700; color: var(--blue); background: var(--blue-light); border-radius: 6px; padding: 2px 8px; margin-bottom: 10px; letter-spacing: 1px; }
.sp-flow h3 { font-size: 15px; color: var(--ink); margin-bottom: 6px; }
.sp-flow p { font-size: 12.5px; color: var(--muted); line-height: 1.8; }

/* 表格 */
.sp-table-wrap { border: 1px solid var(--line); border-radius: 12px; overflow: auto; background: #fff; }
.sp-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.sp-table th, .sp-table td { padding: 14px 18px; text-align: left; font-size: 13.5px; border-bottom: 1px solid var(--line); }
.sp-table th { background: #F7FAFF; color: var(--blue-dark); font-weight: 600; font-size: 13px; white-space: nowrap; }
.sp-table tr:last-child td { border-bottom: 0; }
.sp-table td b { color: var(--ink); }

/* 质保 */
.sp-warranty { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sp-warranty-col { border-radius: 12px; padding: 24px 22px; border: 1px solid var(--line); background: #fff; }
.sp-warranty-col h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; margin-bottom: 14px; }
.sp-warranty-in { border-left: 4px solid #1E9E5A; }
.sp-warranty-in h3 { color: #16794A; }
.sp-warranty-in h3 .sp-ico { color: #1E9E5A; }
.sp-warranty-out { border-left: 4px solid #D9730D; }
.sp-warranty-out h3 { color: #AF5B08; }
.sp-warranty-out h3 .sp-ico { color: #D9730D; }
.sp-check { display: grid; gap: 10px; }
.sp-check li { display: flex; gap: 9px; font-size: 13.5px; line-height: 1.75; color: #33455E; align-items: flex-start; }
.sp-check .sp-ico { width: 15px; height: 15px; color: #1E9E5A; margin-top: 4px; }
.sp-check-x .sp-ico { color: #D9730D; }

/* 联系条 */
.sp-contact-band { display: grid; grid-template-columns: 1.5fr .8fr; gap: 26px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 32px 34px; }
.sp-contact-txt h2 { font-size: 22px; color: var(--blue-dark); }
.sp-contact-txt > p { font-size: 13.5px; color: var(--muted); margin-top: 8px; }
.sp-contact-list { margin-top: 16px; display: grid; gap: 10px; }
.sp-contact-list li { display: flex; gap: 14px; font-size: 14px; }
.sp-contact-list span { color: var(--muted); width: 70px; flex-shrink: 0; }
.sp-contact-list a { color: var(--blue); }
.sp-contact-card { background: var(--blue-light); border-radius: 12px; padding: 22px; text-align: center; }
.sp-contact-card > .sp-ico { width: 26px; height: 26px; color: var(--blue); margin-bottom: 8px; }
.sp-contact-card .btn { margin-top: 12px; }
.sp-qr-ph { width: 120px; height: 120px; margin: 0 auto 12px; border: 1px dashed #B9CDE9; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 11px; color: #7A8CA6; line-height: 1.6; background: #fff; }

/* 搜索框 */
.sp-search { display: flex; align-items: center; gap: 10px; background: #fff; border-radius: 10px; padding: 6px 6px 6px 16px; margin-top: 24px; max-width: 620px; box-shadow: 0 10px 30px rgba(3,25,60,.18); }
.sp-search .sp-ico { width: 18px; height: 18px; color: #90A2BC; flex-shrink: 0; }
.sp-search input { flex: 1; border: 0; outline: none; font-size: 14.5px; padding: 10px 0; font-family: inherit; color: var(--ink); background: transparent; }
.sp-search-btn { border: 0; background: var(--blue); color: #fff; border-radius: 7px; padding: 10px 22px; font-size: 14px; cursor: pointer; font-family: inherit; }
.sp-search-btn:hover { background: var(--blue-dark); }

/* 筛选 chips */
.sp-faq-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.sp-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sp-chip { border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 20px; padding: 7px 16px; font-size: 13.5px; cursor: pointer; font-family: inherit; transition: .18s; }
.sp-chip em { font-style: normal; color: var(--muted); font-size: 12px; margin-left: 3px; }
.sp-chip:hover { border-color: var(--blue); color: var(--blue); }
.sp-chip.on { background: var(--blue); border-color: var(--blue); color: #fff; }
.sp-chip.on em { color: #CFE2FF; }
.sp-faq-count { font-size: 13px; color: var(--muted); }

/* 问答折叠 */
.sp-faq-list { display: grid; gap: 30px; }
.sp-group-title { font-size: 19px; color: var(--blue-dark); display: flex; align-items: center; gap: 10px; padding-left: 12px; border-left: 4px solid var(--blue); margin-bottom: 6px; }
.sp-group-title em { font-style: normal; font-size: 12px; color: var(--muted); font-weight: 400; background: var(--bg-alt); padding: 2px 8px; border-radius: 10px; }
.sp-group-desc { font-size: 13px; color: var(--muted); margin: 0 0 14px 16px; }
.sp-faq-group .sp-faq + .sp-faq { margin-top: 10px; }
.sp-faq { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; scroll-margin-top: 96px; transition: border-color .2s, box-shadow .2s; }
.sp-faq:hover { border-color: #C1D8F5; }
.sp-faq[open] { border-color: #B4D0F2; box-shadow: 0 6px 20px rgba(11,91,211,.07); }
.sp-faq summary { list-style: none; cursor: pointer; padding: 17px 20px; display: flex; align-items: center; gap: 12px; }
.sp-faq summary::-webkit-details-marker { display: none; }
.sp-faq-q { flex: 1; font-size: 15.5px; font-weight: 500; color: var(--ink); line-height: 1.6; }
.sp-faq[open] .sp-faq-q { color: var(--blue-dark); font-weight: 600; }
.sp-faq-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); flex-shrink: 0; }
.sp-badge-hot { font-style: normal; background: #FDECEC; color: #C0342F; border-radius: 4px; padding: 1px 6px; font-size: 11px; }
.sp-plus { width: 14px; height: 14px; position: relative; flex-shrink: 0; }
.sp-plus::before, .sp-plus::after { content: ""; position: absolute; background: #9BB0CB; transition: .2s; }
.sp-plus::before { left: 0; top: 6px; width: 14px; height: 1.6px; }
.sp-plus::after { left: 6px; top: 0; width: 1.6px; height: 14px; }
.sp-faq[open] .sp-plus::after { transform: scaleY(0); }
.sp-faq-a { padding: 0 20px 18px; border-top: 1px dashed var(--line); margin-top: 0; padding-top: 16px; }
.sp-faq-a p { font-size: 14px; color: #33455E; line-height: 1.95; margin: 8px 0; }
.sp-faq-a ol, .sp-faq-a ul { margin: 10px 0 10px 22px; }
.sp-faq-a ol { list-style: decimal; }
.sp-faq-a ul { list-style: disc; }
.sp-faq-a li { font-size: 14px; color: #33455E; line-height: 1.95; margin: 5px 0; }
.sp-faq-a a { color: var(--blue); border-bottom: 1px solid rgba(11,91,211,.3); }
.sp-faq-a a:hover { border-bottom-color: var(--blue); }
.sp-faq-a b { color: var(--blue-dark); }
.sp-faq-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); }
.sp-faq-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.sp-tag { font-size: 11.5px; color: #5A6B85; background: var(--bg-alt); border-radius: 10px; padding: 2px 9px; }
.sp-faq-acts { display: flex; gap: 14px; }
.sp-faq-acts a { font-size: 12.5px; color: var(--blue); }

/* 空状态 */
.sp-empty { text-align: center; padding: 56px 20px; background: #fff; border: 1px dashed var(--line); border-radius: 12px; margin-top: 20px; }
.sp-empty .sp-ico { width: 40px; height: 40px; color: #B4C2D8; margin-bottom: 12px; }
.sp-empty h3 { font-size: 17px; color: var(--ink); }
.sp-empty p { font-size: 13.5px; color: var(--muted); margin: 8px 0 18px; }
.sp-empty-act { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* 边界提示 */
.sp-boundary { display: flex; gap: 16px; background: #fff; border: 1px solid var(--line); border-left: 4px solid #D9730D; border-radius: 10px; padding: 22px 24px; }
.sp-boundary-ico { color: #D9730D; }
.sp-boundary-ico .sp-ico { width: 24px; height: 24px; }
.sp-boundary h3 { font-size: 16px; color: var(--ink); margin-bottom: 6px; }
.sp-boundary p { font-size: 13.5px; color: var(--muted); line-height: 1.9; }
.sp-boundary a { color: var(--blue); }

/* 资料列表 */
.sp-doc-group + .sp-doc-group { margin-top: 30px; }
.sp-doc-group .sp-group-title { margin-bottom: 14px; }
.sp-doc-list { display: grid; gap: 12px; }
.sp-doc { display: flex; align-items: center; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; transition: .2s; }
.sp-doc:hover { border-color: #C1D8F5; box-shadow: var(--shadow); }
.sp-doc-ico { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; background: var(--blue-light); color: var(--blue); flex-shrink: 0; }
.sp-doc-main { flex: 1; min-width: 0; }
.sp-doc-main h3 { font-size: 15.5px; color: var(--ink); margin-bottom: 4px; }
.sp-doc-main p { font-size: 13px; color: var(--muted); line-height: 1.7; }
.sp-doc-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 8px; font-size: 12px; color: #8593A8; }
.sp-doc-act { display: flex; gap: 8px; flex-shrink: 0; }
.btn-sm { padding: 7px 16px; font-size: 13.5px; }
.sp-doc-tip { display: grid; grid-template-columns: 1.6fr .7fr; gap: 26px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 30px 32px; }
.sp-doc-tip h2 { font-size: 20px; color: var(--blue-dark); margin-bottom: 14px; }
.sp-doc-tip-act { text-align: center; }
.sp-doc-tip-act p { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* 工单表单 */
.sp-ticket-grid { display: grid; grid-template-columns: 1.55fr .85fr; gap: 28px; align-items: start; }
.sp-ticket-form-box { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 30px 32px; box-shadow: var(--shadow); }
.sp-form-title { font-size: 22px; color: var(--blue-dark); }
.sp-form-sub { font-size: 13px; color: var(--muted); margin: 6px 0 20px; }
.sp-form { display: grid; gap: 16px; }
.sp-form-row { display: grid; gap: 7px; }
.sp-form-2 { grid-template-columns: 1fr 1fr; gap: 14px; }
.sp-form-2 > div { display: grid; gap: 7px; }
.sp-form-row label { font-size: 13.5px; color: var(--ink); font-weight: 500; }
.sp-form-row label i { font-style: normal; color: #E5484D; }
.sp-opt { font-weight: 400; color: var(--muted); font-size: 12.5px; }
.sp-form-row input, .sp-form-row select, .sp-form-row textarea { width: 100%; border: 1px solid #D7E1EF; border-radius: 8px; padding: 11px 13px; font-size: 14px; font-family: inherit; color: var(--ink); background: #FBFCFE; transition: .2s; }
.sp-form-row input:focus, .sp-form-row select:focus, .sp-form-row textarea:focus { outline: none; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px rgba(11,91,211,.1); }
.sp-form-hint { font-size: 12px; color: #8593A8; line-height: 1.7; }
.sp-hp { position: absolute; left: -9999px; opacity: 0; height: 0; }
.sp-form-tip { font-size: 12.5px; color: var(--muted); text-align: center; }
.sp-form-tip.err { color: #E5484D; }
.sp-form-tip.ok { color: #1E9E5A; }
.sp-upload { border: 1px dashed #C9D8EC; border-radius: 10px; padding: 18px; background: #FBFCFE; text-align: center; }
.sp-upload-btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 10px 20px; font-size: 13.5px; color: var(--blue); cursor: pointer; font-family: inherit; }
.sp-upload-btn:hover { border-color: var(--blue); }
.sp-upload-tip { font-size: 11.5px; color: #8593A8; margin-top: 8px; }
.sp-thumbs { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; justify-content: flex-start; }
.sp-thumb { position: relative; width: 78px; height: 78px; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.sp-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sp-thumb button { position: absolute; right: 2px; top: 2px; width: 18px; height: 18px; border-radius: 50%; border: 0; background: rgba(9,20,40,.6); color: #fff; font-size: 12px; line-height: 1; cursor: pointer; }
.sp-ticket-ok { text-align: center; padding: 24px 10px 10px; }
.sp-ok-ico { width: 60px; height: 60px; border-radius: 50%; background: #E5F5EC; color: #1E9E5A; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.sp-ok-ico .sp-ico { width: 30px; height: 30px; }
.sp-ticket-ok h2 { font-size: 21px; color: var(--blue-dark); }
.sp-ok-no { font-size: 15px; margin: 10px 0 18px; color: var(--ink); }
.sp-ok-no b { color: var(--blue); letter-spacing: 1px; }
.sp-ok-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; background: var(--bg-alt); border-radius: 10px; padding: 16px 20px; text-align: left; }
.sp-ok-list dt { font-size: 12px; color: var(--muted); }
.sp-ok-list dd { font-size: 13.5px; color: var(--ink); }
.sp-ok-note { font-size: 12.5px; color: var(--muted); margin: 16px 0; line-height: 1.8; }
.sp-ok-act { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* 工单侧栏 */
.sp-ticket-side { display: grid; gap: 16px; }
.sp-side-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 20px; }
.sp-side-card h3 { font-size: 15px; color: var(--blue-dark); margin-bottom: 12px; display: flex; align-items: center; gap: 7px; }
.sp-side-card h3 .sp-ico { width: 16px; height: 16px; color: var(--blue); }
.sp-side-list { display: grid; gap: 2px; }
.sp-side-list li + li { border-top: 1px dashed var(--line); }
.sp-side-list a { display: block; padding: 9px 0; font-size: 13px; color: #3C4F68; line-height: 1.65; }
.sp-side-list a:hover { color: var(--blue); }
.sp-side-more { display: inline-block; margin-top: 10px; font-size: 12.5px; color: var(--blue); }
.sp-side-urgent { background: linear-gradient(150deg, #083E97, #0B5BD3); color: #fff; border: 0; }
.sp-side-urgent h3 { color: #fff; }
.sp-side-urgent h3 .sp-ico { color: #9FC3F5; }
.sp-urgent-tel { font-size: 23px; font-weight: 700; letter-spacing: 1px; }
.sp-side-urgent .muted { color: #B9CDEB; font-size: 12px; margin-top: 4px; line-height: 1.7; }
.sp-side-urgent .sp-qr { margin: 14px auto 0; border-radius: 8px; display: block; }
.sp-side-urgent .sp-qr-ph { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.35); color: #CFE2FF; }
.sp-check-sm li { font-size: 12.5px; }

/* 问答详情页 */
.sp-article-hero { background: linear-gradient(120deg, #F4F8FE, #EAF1FB); border-bottom: 1px solid var(--line); padding: 34px 0 30px; }
.sp-crumb-inline { font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.sp-crumb-inline a { color: var(--muted); }
.sp-crumb-inline a:hover { color: var(--blue); }
.sp-art-cat { display: inline-block; font-size: 12px; color: var(--blue); background: #fff; border: 1px solid #CFE2FF; border-radius: 12px; padding: 3px 11px; margin-bottom: 12px; }
.sp-article-hero h1 { font-size: 27px; line-height: 1.5; color: var(--ink); max-width: 900px; }
.sp-art-meta { font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.sp-article-wrap { display: grid; grid-template-columns: 1fr 320px; gap: 30px; align-items: start; }
.sp-article { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 30px 32px; }
.sp-article-body p { font-size: 15px; color: #2A3A55; line-height: 2; margin: 12px 0; }
.sp-article-body ol, .sp-article-body ul { margin: 14px 0 14px 24px; }
.sp-article-body ol { list-style: decimal; }
.sp-article-body ul { list-style: disc; }
.sp-article-body li { font-size: 15px; color: #2A3A55; line-height: 2; margin: 7px 0; }
.sp-article-body a { color: var(--blue); border-bottom: 1px solid rgba(11,91,211,.3); }
.sp-article-body b { color: var(--blue-dark); }
.sp-art-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 22px; padding-top: 16px; border-top: 1px dashed var(--line); }
.sp-article-cta { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 24px; background: var(--blue-light); border-radius: 10px; padding: 20px 22px; flex-wrap: wrap; }
.sp-article-cta h3 { font-size: 15.5px; color: var(--blue-dark); }
.sp-article-cta p { font-size: 13px; color: #46586F; margin-top: 4px; }
.sp-article-side { display: grid; gap: 16px; }
.sp-side-help .btn { margin-top: 12px; }

/* 内链区块 */
.sp-inline { padding: 50px 0 46px; background: var(--bg-alt); border-top: 1px solid var(--line); }
.sp-inline-head { margin-bottom: 22px; }
.sp-inline-head h2 { font-size: 21px; color: var(--blue-dark); padding-left: 12px; border-left: 4px solid var(--blue); }
.sp-inline-head p { font-size: 13px; color: var(--muted); margin: 8px 0 0 16px; }
.sp-inline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.sp-inline-card { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; transition: .2s; }
.sp-inline-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.sp-inline-ico { width: 34px; height: 34px; border-radius: 8px; background: var(--blue-light); color: var(--blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sp-inline-ico .sp-ico { width: 17px; height: 17px; }
.sp-inline-card > span:nth-child(2) { flex: 1; display: flex; flex-direction: column; }
.sp-inline-card b { font-size: 14px; color: var(--ink); }
.sp-inline-card em { font-style: normal; font-size: 11.5px; color: var(--muted); }
.sp-inline-card > .sp-ico { width: 14px; height: 14px; color: #B4C2D8; }
.sp-inline-faq { margin-top: 16px; display: flex; gap: 8px 18px; flex-wrap: wrap; align-items: center; font-size: 12.5px; }
.sp-inline-faq-l { color: var(--muted); }
.sp-inline-faq a { color: var(--blue); }

/* 首页入口 */
.sp-home-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.sp-home-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 24px 20px; display: flex; flex-direction: column; gap: 8px; transition: .2s; }
.sp-home-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); }
.sp-home-ico { width: 42px; height: 42px; border-radius: 10px; background: var(--blue-light); color: var(--blue); display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.sp-home-ico .sp-ico { width: 21px; height: 21px; }
.sp-home-card h3 { font-size: 16px; color: var(--blue-dark); }
.sp-home-card p { font-size: 12.5px; color: var(--muted); line-height: 1.75; flex: 1; }
.sp-home-more { font-size: 12.5px; color: var(--blue); }

/* 底部 CTA */
.sp-cta { background: linear-gradient(110deg, #062B66, #0B5BD3); color: #fff; padding: 42px 0; }
.sp-cta-in { display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.sp-cta h2 { font-size: 23px; }
.sp-cta p { font-size: 13.5px; color: #CFE2FF; margin-top: 8px; }
.sp-cta-act { display: flex; gap: 12px; flex-wrap: wrap; }
.sp-cta .btn-ghost { border: 1px solid rgba(255,255,255,.6); color: #fff; }
.sp-cta .btn-ghost:hover { background: rgba(255,255,255,.14); }

@media (max-width: 1020px) {
  .sp-mod-grid, .sp-scope-grid, .sp-home-grid, .sp-inline-grid { grid-template-columns: repeat(2, 1fr); }
  .sp-flow { grid-template-columns: repeat(2, 1fr); }
  .sp-flow li::after { display: none; }
  .sp-ticket-grid, .sp-article-wrap, .sp-contact-band, .sp-doc-tip, .sp-warranty { grid-template-columns: 1fr; }
  .sp-hero h1 { font-size: 28px; }
  .sp-doc-mini { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  /* 移动端导航：子菜单展开为缩进列表 */
  .main-nav { gap: 0; }
  .main-nav > li > a { justify-content: space-between; }
  .nav-caret { display: none; }
  .sub-nav { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; border-radius: 0; padding: 0 0 6px 12px; min-width: 0; display: block; }
  .sub-nav::before { display: none; }
  .sub-nav a { display: block; padding: 9px 12px; font-size: 14px; color: var(--muted); border-radius: 6px; }
  .sub-nav a.on { background: var(--blue-light); }

  .sp-hero-in { padding: 36px 16px 32px; }
  .sp-hero h1 { font-size: 22px; }
  .sp-hero-desc { font-size: 14px; }
  .sp-hero-tags { gap: 8px 16px; }
  .sp-hero-tags li { font-size: 13px; }
  .sp-hero-cta { flex-direction: column; }
  .sp-hero-cta .btn { width: 100%; text-align: center; }
  .sp-tabs .wrap { padding: 0 12px; }
  .sp-tab { padding: 13px 12px; font-size: 14px; }
  .sp-tab .sp-ico { width: 15px; height: 15px; }
  .sp-sec { padding: 40px 0; }
  .sp-mod-grid, .sp-scope-grid, .sp-home-grid, .sp-inline-grid, .sp-flow, .sp-ok-list { grid-template-columns: 1fr; }
  .sp-faq summary { padding: 14px 15px; align-items: flex-start; }
  .sp-faq-q { font-size: 14.5px; }
  .sp-faq-meta { display: none; }
  .sp-faq-a { padding: 14px 15px 16px; }
  .sp-faq-a p, .sp-faq-a li { font-size: 13.5px; }
  .sp-faq-foot { flex-direction: column; align-items: flex-start; gap: 10px; }
  .sp-search { padding: 5px 5px 5px 13px; }
  .sp-search input { font-size: 14px; }
  .sp-search-btn { padding: 9px 16px; }
  .sp-ticket-form-box, .sp-article { padding: 22px 18px; }
  .sp-form-2 { grid-template-columns: 1fr; }
  .sp-doc { flex-wrap: wrap; }
  .sp-doc-act { width: 100%; }
  .sp-doc-act .btn { flex: 1; text-align: center; }
  .sp-doc-tip, .sp-contact-band { padding: 22px; }
  .sp-article-hero h1 { font-size: 20px; }
  .sp-article-body p, .sp-article-body li { font-size: 14px; }
  .sp-cta h2 { font-size: 19px; }
  .sp-cta-act { width: 100%; }
  .sp-cta-act .btn { flex: 1; text-align: center; }
  .sp-hot-item { padding: 13px 15px; }
  .sp-hot-q { font-size: 13.5px; }
  .sp-hot-cat { display: none; }
  .sp-inline-faq { display: none; }
  .sp-warranty-col { padding: 20px 18px; }
}

/* ==================== 操作视频板块 ==================== */
.sp-video-mini { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.sp-video-mini-item { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; transition: .2s; }
.sp-video-mini-item:hover { border-color: #C1D8F5; box-shadow: var(--shadow); }
.sp-video-mini-cover { width: 40px; height: 40px; flex-shrink: 0; border-radius: 8px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--blue) 0%, #4A8CF0 100%); color: #fff; }
.sp-video-mini-cover .sp-ico { width: 16px; height: 16px; fill: #fff; stroke: none; }
.sp-video-mini-t { flex: 1; font-size: 14px; color: var(--ink); }
.sp-video-mini-m { font-size: 12px; color: var(--muted); flex-shrink: 0; }

.sp-video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sp-video { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: .2s; display: flex; flex-direction: column; }
.sp-video:hover { border-color: #C1D8F5; box-shadow: var(--shadow); transform: translateY(-2px); }
.sp-video-cover { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; padding: 0; cursor: pointer; background: linear-gradient(135deg, #0B2A66 0%, #123F9E 55%, #1A56DB 100%); overflow: hidden; }
.sp-video-cover::after { content: ""; position: absolute; inset: 0; background:
  radial-gradient(600px 200px at 90% -10%, rgba(255,255,255,.16), transparent 60%),
  repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 40px); }
.sp-video-thumb { position: absolute; z-index: 2; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 56px; height: 56px; border-radius: 50%; background: rgba(255,255,255,.92); color: var(--blue); display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 26px rgba(3,15,40,.35); transition: .2s; }
.sp-video-thumb .sp-ico { width: 22px; height: 22px; margin-left: 3px; fill: currentColor; stroke: none; }
.sp-video-cover:hover .sp-video-thumb { transform: translate(-50%, -50%) scale(1.1); background: #fff; }
.sp-video-dur { position: absolute; z-index: 2; right: 10px; bottom: 10px; padding: 3px 8px; border-radius: 6px; background: rgba(6,18,42,.72); color: #fff; font-size: 12px; font-variant-numeric: tabular-nums; }
.sp-video-hot { position: absolute; z-index: 2; left: 10px; top: 10px; padding: 3px 9px; border-radius: 6px; background: #FF7A45; color: #fff; font-size: 12px; font-weight: 600; }
.sp-video-main { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.sp-video-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sp-video-cat { font-size: 12px; color: var(--blue); background: var(--blue-light); border-radius: 5px; padding: 2px 8px; font-weight: 600; }
.sp-video-main h3 { font-size: 16px; color: var(--ink); line-height: 1.45; }
.sp-video-main p { font-size: 13.5px; color: var(--muted); line-height: 1.65; flex: 1; }

.sp-vmodal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 20px; }
.sp-vmodal[hidden] { display: none; }
.sp-vmodal-mask { position: absolute; inset: 0; background: rgba(6,16,36,.66); }
.sp-vmodal-box { position: relative; width: 100%; max-width: 860px; background: #fff; border-radius: 14px; overflow: hidden; box-shadow: 0 30px 80px rgba(3,15,40,.45); animation: spVIn .22s ease; }
@keyframes spVIn { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
.sp-vmodal-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.sp-vmodal-head h3 { font-size: 16px; color: var(--ink); }
.sp-vmodal-x { border: 0; background: none; font-size: 26px; line-height: 1; color: var(--muted); cursor: pointer; padding: 0 4px; }
.sp-vmodal-x:hover { color: var(--ink); }
.sp-vmodal-player { aspect-ratio: 16 / 9; background: #000; }
.sp-vmodal-player video, .sp-vmodal-player iframe { width: 100%; height: 100%; border: 0; display: block; }
.sp-vmodal-desc { padding: 12px 18px 16px; font-size: 13.5px; color: var(--muted); line-height: 1.7; }

@media (max-width: 960px) {
  .sp-video-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .sp-video-grid { grid-template-columns: 1fr; }
  .sp-video-mini { grid-template-columns: 1fr; }
  .sp-vmodal { padding: 10px; }
}

/* ---------------- 会员账号中心 ---------------- */
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-user { color: #fff; font-size: 13px; border: 1px solid rgba(255,255,255,.45); padding: 3px 12px; border-radius: 999px; transition: background .15s, border-color .15s; }
.topbar-user:hover { background: rgba(255,255,255,.14); border-color: #fff; }

.account-sec { padding: 48px 0 64px; }
.account-wrap { display: grid; grid-template-columns: minmax(320px, 440px) 1fr; gap: 32px; align-items: start; }
.account-card { background: #fff; border: 1px solid #E3E9F4; border-radius: 14px; padding: 28px 30px 30px; box-shadow: 0 6px 24px rgba(11,91,211,.06); }
.account-tabs { display: flex; gap: 4px; margin-bottom: 22px; background: #F2F6FD; border-radius: 10px; padding: 4px; }
.account-tab { flex: 1; border: 0; background: transparent; padding: 9px 0; font-size: 15px; color: #5A6B85; border-radius: 8px; cursor: pointer; }
.account-tab.on { background: #fff; color: #0B5BD3; font-weight: 600; box-shadow: 0 1px 4px rgba(11,91,211,.12); }
.account-form .form-item { margin-bottom: 16px; }
.account-form .form-item label { display: block; font-size: 13px; color: #33445C; margin-bottom: 6px; }
.account-form .form-item input { width: 100%; box-sizing: border-box; border: 1px solid #D8E2F2; border-radius: 8px; padding: 10px 12px; font-size: 15px; outline: none; background: #fff; -webkit-appearance: none; appearance: none; }
.account-form .form-item input:focus { border-color: #0B5BD3; box-shadow: 0 0 0 3px rgba(11,91,211,.10); }
.account-btn { width: 100%; margin-top: 4px; }
.account-tip { min-height: 20px; font-size: 13px; margin: 8px 0 0; color: #5A6B85; }
.account-tip.err { color: #D8433B; }
.account-tip.ok { color: #1D9E75; }
.account-foot { text-align: center; font-size: 13px; color: #5A6B85; margin: 14px 0 0; }
.account-foot a { color: #0B5BD3; }
.account-me { text-align: center; padding: 10px 0 4px; }
.account-avatar { width: 64px; height: 64px; margin: 4px auto 12px; border-radius: 50%; background: #0B5BD3; color: #fff; font-size: 26px; line-height: 64px; font-weight: 600; }
.account-nick { margin: 0 0 4px; font-size: 19px; color: #1B2A44; }
.account-badges { margin: 12px 0 18px; display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
.account-aside { background: #F6F9FE; border: 1px solid #E3E9F4; border-radius: 14px; padding: 24px 26px; }
.account-aside h3 { margin: 0 0 14px; font-size: 16px; color: #1B2A44; }
.account-benefits { margin: 0; padding-left: 18px; color: #33445C; font-size: 14px; line-height: 1.9; }
.account-help { margin-top: 16px; font-size: 13px; color: #5A6B85; }
.account-help a { color: #0B5BD3; }
@media (max-width: 768px) {
  .account-wrap { grid-template-columns: 1fr; }
  .topbar-right { gap: 10px; }
  .topbar-hotline { display: none; }
}