/*
Theme Name: QG Official
Version: 2.0.0
Description: QG 官网独立主题 — 智能硬件与本地 AI 解决方案
Text Domain: qg-official
*/

/* ── 设计变量 ─────────────────────────────── */
:root {
  --brand:        #1a56db;
  --brand-dark:   #1e40af;
  --brand-light:  #dbeafe;
  --green:        #0e9f6e;
  --orange:       #ff5a1f;
  --text:         #111827;
  --muted:        #6b7280;
  --border:       #e5e7eb;
  --bg:           #f9fafb;
  --white:        #ffffff;
  --radius:       10px;
  --shadow:       0 4px 20px rgba(0,0,0,.08);
  --shadow-hover: 0 8px 32px rgba(26,86,219,.18);
  --font:         'Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --ease:         all .25s cubic-bezier(.4,0,.2,1);
}

/* ── 自定义导航（首页独立 header） ────────── */
.qg-site-header {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.qg-nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: .85rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.qg-site-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text) !important;
  white-space: nowrap;
}
.qg-nav { flex: 1; }
.qg-nav-list,
ul.qg-nav-list {
  list-style: none !important;
  display: flex !important;
  flex-direction: row !important;
  flex-wrap: nowrap !important;
  gap: .25rem !important;
  margin: 0 !important;
  padding: 0 !important;
}
.qg-nav-list li,
ul.qg-nav-list > li { display: inline-flex !important; padding: 0 !important; margin: 0 !important; }
.qg-nav-list li a,
ul.qg-nav-list li a {
  color: var(--muted) !important;
  font-size: .875rem !important;
  font-weight: 500 !important;
  padding: .4rem .85rem !important;
  border-radius: 6px !important;
  transition: var(--ease) !important;
  display: block !important;
  line-height: 1.4 !important;
}
.qg-nav-list li a:hover,
ul.qg-nav-list li a:hover,
.qg-nav-list .current-menu-item > a { color: var(--brand) !important; background: var(--brand-light) !important; }
.qg-nav-cta {
  background: var(--brand) !important;
  color: #fff !important;
  padding: .5rem 1.25rem !important;
  border-radius: 7px !important;
  font-size: .875rem !important;
  font-weight: 600 !important;
  white-space: nowrap !important;
  transition: var(--ease) !important;
  display: inline-block !important;
}
.qg-nav-cta:hover { background: var(--brand-dark) !important; color: #fff !important; }
.qg-nav-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }

/* ── 语言切换器 ──────────────────────────── */
.qg-lang-switcher { display: flex; gap: .25rem; }
.qg-lang-switcher ul { list-style: none; display: flex; gap: .25rem; margin: 0; padding: 0; }
.qg-lang-switcher li { display: inline-flex; }
.qg-lang-switcher a {
  color: var(--muted) !important;
  font-size: .8rem !important;
  font-weight: 600 !important;
  padding: .3rem .6rem !important;
  border-radius: 4px !important;
  border: 1px solid var(--border) !important;
  text-transform: uppercase !important;
  transition: var(--ease) !important;
}
.qg-lang-switcher a:hover { color: var(--brand) !important; border-color: var(--brand) !important; }

/* ── 自定义页脚 ───────────────────────────── */
.qg-footer {
  background: #0f172a;
  color: rgba(255,255,255,.6);
}
.qg-footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 4rem;
}
.qg-footer-logo { color: #fff; font-size: 1.25rem; font-weight: 800; margin-bottom: .75rem; }
.qg-footer-brand p { font-size: .9rem; line-height: 1.7; max-width: 280px; }
.qg-footer-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; }
.qg-footer-col h4 { color: rgba(255,255,255,.9); font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 1rem; }
.qg-footer-col a { display: block; color: rgba(255,255,255,.5) !important; font-size: .875rem; margin-bottom: .5rem; transition: var(--ease); }
.qg-footer-col a:hover { color: #fff !important; }
.qg-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 1.25rem 1.5rem;
  text-align: center;
  font-size: .8rem;
  color: rgba(255,255,255,.3);
}

/* ── 全局 ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: var(--brand); text-decoration: none; transition: var(--ease); }
a:hover { color: var(--brand-dark); }
img { max-width: 100%; height: auto; }

/* ── 首页 Hero ────────────────────────────── */
.qg-hero {
  background: linear-gradient(135deg,#0f172a 0%,#1e3a8a 55%,#1a56db 100%);
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.qg-hero::before {
  content:'';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Ccircle cx='40' cy='40' r='1.5' fill='rgba(255,255,255,.07)'/%3E%3C/svg%3E") repeat;
}
.qg-hero-inner {
  position: relative;
  max-width: 1140px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.qg-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: #93c5fd;
  font-size: .8rem;
  font-weight: 600;
  padding: .35rem 1rem;
  border-radius: 999px;
  letter-spacing: .04em;
  margin-bottom: 1.5rem;
}
.qg-hero h1 {
  font-size: clamp(2.2rem,4.5vw,3.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 1.25rem;
}
.qg-hero h1 span { color: #60a5fa; }
.qg-hero p {
  color: rgba(255,255,255,.75);
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}
.qg-hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--brand);
  color: #fff !important;
  padding: .85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease);
  border: 2px solid var(--brand);
}
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); color: #fff !important; }
.btn-outline {
  display: inline-flex; align-items: center; gap: .5rem;
  background: transparent;
  color: #fff !important;
  padding: .85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid rgba(255,255,255,.4);
  transition: var(--ease);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.1); }

/* Hero 右侧卡片组 */
.qg-hero-visual { display: grid; gap: 1rem; }
.qg-stat-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.qg-stat-icon {
  width: 48px; height: 48px;
  background: var(--brand);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.qg-stat-label { color: rgba(255,255,255,.6); font-size: .8rem; margin-bottom: .2rem; }
.qg-stat-value { color: #fff; font-size: 1.4rem; font-weight: 700; }

/* ── Section 通用 ─────────────────────────── */
.qg-section { padding: 5rem 1.5rem; }
.qg-section.bg-alt { background: var(--bg); }
.qg-container { max-width: 1140px; margin: 0 auto; }
.qg-section-label {
  display: inline-block;
  color: var(--brand);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.qg-section-title {
  font-size: clamp(1.75rem,3vw,2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.qg-section-desc { color: var(--muted); font-size: 1.05rem; line-height: 1.75; max-width: 580px; }
.qg-section-head { margin-bottom: 3.5rem; }

/* ── 数字统计带 ───────────────────────────── */
.qg-stats-bar {
  background: var(--brand);
  padding: 2.5rem 1.5rem;
}
.qg-stats-grid {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 2rem;
  text-align: center;
}
.qg-stats-grid .num { color: #fff; font-size: 2.5rem; font-weight: 800; line-height: 1; margin-bottom: .35rem; }
.qg-stats-grid .lbl { color: rgba(255,255,255,.75); font-size: .875rem; }

/* ── 特性卡片 ─────────────────────────────── */
.qg-features-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1.5rem;
}
.qg-feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--ease);
}
.qg-feature-card:hover { border-color: var(--brand); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.qg-feature-icon {
  width: 52px; height: 52px;
  background: var(--brand-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
}
.qg-feature-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .6rem; }
.qg-feature-card p { color: var(--muted); font-size: .9rem; line-height: 1.7; }

/* ── 产品卡片 ─────────────────────────────── */
.qg-products-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1.5rem;
}
.qg-product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--ease);
}
.qg-product-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.qg-product-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--bg) 0%, var(--brand-light) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
}
.qg-product-body { padding: 1.5rem; }
.qg-product-tag {
  display: inline-block;
  background: var(--brand-light);
  color: var(--brand);
  font-size: .72rem;
  font-weight: 700;
  padding: .2rem .65rem;
  border-radius: 999px;
  margin-bottom: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
/* ── 产品状态徽章 ───────────────────────── */
.qg-product-meta { display: flex; align-items: center; gap: .5rem; margin-bottom: .75rem; flex-wrap: wrap; }
.qg-product-status {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  padding: .15rem .55rem;
  border-radius: 999px;
  letter-spacing: .04em;
}
.qg-product-status.status-planning { background: #fff7ed; color: #c2410c; border: 1px solid #fed7aa; }
.qg-product-status.status-developing { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.qg-product-status.status-released { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }
.qg-archive-card-meta { display: flex; align-items: center; gap: .5rem; margin-bottom: .5rem; flex-wrap: wrap; }

.qg-product-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: .5rem; }
.qg-product-body p { color: var(--muted); font-size: .875rem; line-height: 1.65; margin-bottom: 1.25rem; }
.qg-product-link {
  color: var(--brand) !important;
  font-size: .875rem;
  font-weight: 600;
  display: inline-flex; align-items: center; gap: .3rem;
}
.qg-product-link::after { content: '→'; transition: var(--ease); }
.qg-product-link:hover::after { transform: translateX(4px); }

/* ── 解决方案 ─────────────────────────────── */
.qg-solutions-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 1.5rem;
}
.qg-solution-card {
  border-radius: var(--radius);
  padding: 2rem 2.25rem;
  color: #fff;
  position: relative;
  overflow: hidden;
  transition: var(--ease);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.qg-solution-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.qg-solution-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,.2); }
.qg-solution-card.c1 { background: linear-gradient(135deg,#1e3a8a,#1a56db); }
.qg-solution-card.c2 { background: linear-gradient(135deg,#065f46,#0e9f6e); }
.qg-solution-card.c3 { background: linear-gradient(135deg,#7c2d12,#ea580c); }
.qg-solution-card.c4 { background: linear-gradient(135deg,#4c1d95,#7c3aed); }
.qg-solution-card .tag {
  display: inline-block;
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.85);
  font-size: .72rem;
  font-weight: 600;
  padding: .2rem .65rem;
  border-radius: 999px;
  margin-bottom: .75rem;
  letter-spacing: .04em;
}
.qg-solution-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: .6rem; color: #fff !important; }
.qg-solution-card p { color: rgba(255,255,255,.8) !important; font-size: .875rem; line-height: 1.65; margin-bottom: 1.5rem; }
.qg-solution-link {
  color: rgba(255,255,255,.9) !important;
  font-size: .875rem;
  font-weight: 600;
  display: inline-flex; align-items: center; gap: .4rem;
}
.qg-solution-link::after { content: '→'; transition: var(--ease); }
.qg-solution-link:hover::after { transform: translateX(4px); }

/* ── CTA Banner ───────────────────────────── */
.qg-cta {
  background: linear-gradient(135deg,#0f172a,#1e3a8a);
  padding: 5rem 1.5rem;
  text-align: center;
}
.qg-cta h2 { color: #fff !important; font-size: clamp(1.75rem,3vw,2.5rem); font-weight: 800; margin-bottom: 1rem; }
.qg-cta p { color: rgba(255,255,255,.7) !important; font-size: 1.05rem; margin-bottom: 2.5rem; max-width: 500px; margin-left: auto; margin-right: auto; }
.qg-cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn-white {
  background: #fff;
  color: var(--brand) !important;
  padding: .85rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: .95rem;
  transition: var(--ease);
  display: inline-flex; align-items: center; gap: .5rem;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); color: var(--brand-dark) !important; }

/* ── 内页通用样式 ────────────────────────── */
.qg-page-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  padding: 3.5rem 1.5rem;
}
.qg-page-hero h1 {
  max-width: 1140px;
  margin: 0 auto;
  color: #fff;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -.02em;
}
.qg-page-main {
  padding: 4rem 0 5rem;
  min-height: 60vh;
}
.qg-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.qg-page-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}
.qg-page-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text);
}
.qg-page-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.75rem 0 .75rem;
  color: var(--text);
}
.qg-page-content p { margin-bottom: 1.25rem; }
.qg-page-content ul, .qg-page-content ol {
  margin: 0 0 1.25rem 1.5rem;
}
.qg-page-content li { margin-bottom: .4rem; }
.qg-page-content img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}
.qg-page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9rem;
}
.qg-page-content th {
  background: var(--brand);
  color: #fff;
  padding: .65rem 1rem;
  text-align: left;
}
.qg-page-content td {
  padding: .6rem 1rem;
  border-bottom: 1px solid var(--border);
}
.qg-page-content tr:nth-child(even) td { background: var(--bg); }

/* ── 联系页专用 ──────────────────────────── */
.qg-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2rem;
}
.qg-contact-info h3 { font-size: 1.1rem; margin-bottom: 1.5rem; color: var(--muted); }
.qg-contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.qg-contact-icon { font-size: 1.5rem; flex-shrink: 0; }
.qg-contact-item strong { display: block; font-weight: 600; margin-bottom: .25rem; }
.qg-contact-item span { color: var(--muted); font-size: .9rem; }
.qg-contact-form h3 { font-size: 1.1rem; margin-bottom: 1.5rem; color: var(--muted); }
/* CF7 样式覆盖 */
.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form input[type="tel"],
.wpcf7-form textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: .95rem;
  transition: border-color .2s;
  background: #fff;
  color: var(--text);
  margin-bottom: .75rem;
}
.wpcf7-form input:focus,
.wpcf7-form textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}
.wpcf7-form textarea { min-height: 130px; resize: vertical; }
.wpcf7-form input[type="submit"] {
  background: var(--brand);
  color: #fff;
  border: none;
  padding: .85rem 2.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: var(--ease);
  width: 100%;
}
.wpcf7-form input[type="submit"]:hover { background: var(--brand-dark); transform: translateY(-1px); }

/* ── 联系页标签切换 ──────────────────────── */
.qg-tabs { max-width: 800px; margin: 0 auto; }
.qg-tab-input { display: none; }
.qg-tab-nav {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 2rem;
}
.qg-tab-label {
  padding: .85rem 2rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--ease);
}
.qg-tab-label:hover { color: var(--brand); }
#tab-form:checked ~ .qg-tab-nav label[for="tab-form"],
#tab-info:checked ~ .qg-tab-nav label[for="tab-info"] {
  color: var(--brand);
  border-bottom-color: var(--brand);
}
.qg-tab-panel { display: none; }
#tab-form:checked ~ .qg-tab-panel-form,
#tab-info:checked ~ .qg-tab-panel-info { display: block; }
/* 回退表单样式 */
.qg-fallback-form input,
.qg-fallback-form select,
.qg-fallback-form textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: .95rem;
  transition: border-color .2s;
  background: #fff;
  color: var(--text);
  margin-bottom: .75rem;
}
.qg-fallback-form input:focus,
.qg-fallback-form select:focus,
.qg-fallback-form textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}
.qg-fallback-form textarea { min-height: 130px; resize: vertical; }
.qg-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.qg-contact-extra h3 { font-size: 1.1rem; margin-bottom: .75rem; color: var(--text); }
.qg-contact-extra p { color: var(--muted); font-size: .9rem; line-height: 1.7; margin-bottom: .5rem; }
@media(max-width:600px) {
  .qg-form-row { grid-template-columns: 1fr; }
  .qg-contact-grid { grid-template-columns: 1fr; }
}

/* ── 产品/解决方案详情页 ──────────────────── */
.qg-product-hero-inner { max-width: 1140px; margin: 0 auto; }
.qg-product-tag-badge {
  display: inline-block;
  background: rgba(255,255,255,.2);
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  padding: .25rem .75rem;
  border-radius: 20px;
  margin-bottom: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.qg-product-model {
  color: rgba(255,255,255,.7);
  font-size: 1rem;
  margin: .5rem 0 0;
}
.qg-product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}
.qg-product-content { color: var(--text); font-size: 1rem; line-height: 1.8; }
.qg-product-content h2 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; color: var(--text); }
.qg-product-content h3 { font-size: 1.15rem; font-weight: 600; margin: 1.5rem 0 .75rem; color: var(--text); }
.qg-product-content p { margin-bottom: 1.2rem; }
.qg-product-content ul, .qg-product-content ol { margin: 0 0 1.2rem 1.5rem; }
.qg-product-content li { margin-bottom: .35rem; }
.qg-spec-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.qg-spec-box h3 { font-size: .9rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 1rem; }
.qg-spec-list { list-style: none; margin: 0; padding: 0; }
.qg-spec-list li {
  padding: .55rem 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
  color: var(--text);
}
.qg-spec-list li:last-child { border-bottom: none; }
.qg-product-cta-box { display: flex; flex-direction: column; gap: .75rem; }
.qg-btn-primary {
  background: var(--brand);
  color: #fff !important;
  padding: .85rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease);
}
.qg-btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.qg-btn-secondary {
  background: #fff;
  color: var(--brand) !important;
  border: 2px solid var(--brand);
  padding: .8rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease);
}
.qg-btn-secondary:hover { background: var(--brand-light); }
.qg-btn-outline {
  display: inline-block;
  border: 1px solid var(--brand);
  color: var(--brand) !important;
  padding: .6rem 1.25rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: .9rem;
  text-decoration: none !important;
  transition: var(--ease);
}
.qg-btn-outline:hover { background: var(--brand); color: #fff !important; }
.qg-back-link { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.qg-back-link a { color: var(--brand); text-decoration: none; font-size: .9rem; }
.qg-back-link a:hover { text-decoration: underline; }

/* ── 产品归档页 ───────────────────────────── */
.qg-archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.qg-archive-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: var(--ease);
}
.qg-archive-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.qg-archive-card-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.qg-archive-card-tag {
  font-size: .75rem;
  font-weight: 700;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .5rem;
}
.qg-archive-card-title { font-size: 1.15rem; font-weight: 700; margin: 0 0 .4rem; color: var(--text); }
.qg-archive-card-title a { color: var(--text); text-decoration: none; }
.qg-archive-card-title a:hover { color: var(--brand); }
.qg-archive-card-model { font-size: .85rem; color: var(--muted); margin: 0 0 .75rem; }
.qg-archive-card-desc { color: var(--muted); font-size: .9rem; line-height: 1.6; flex: 1; margin-bottom: 1rem; }
.qg-archive-card-specs { list-style: none; margin: 0 0 1.25rem; padding: 0; }
.qg-archive-card-specs li { font-size: .82rem; color: var(--muted); padding: .2rem 0; border-bottom: 1px dashed var(--border); }
.qg-archive-card-specs li:last-child { border-bottom: none; }

/* ── 解决方案归档页 ──────────────────────── */
.qg-solutions-archive-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.qg-solution-card.c1 { background: linear-gradient(135deg,#1e3a8a,#1a56db); }
.qg-solution-card.c2 { background: linear-gradient(135deg,#065f46,#0e9f6e); }
.qg-solution-card.c3 { background: linear-gradient(135deg,#92400e,#ff5a1f); }
.qg-solution-card.c4 { background: linear-gradient(135deg,#4c1d95,#7c3aed); }
.qg-solution-card {
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  transition: var(--ease);
}
.qg-solution-card:hover { transform: translateY(-4px); }
.qg-solution-card-body { flex: 1; }
.qg-solution-card .qg-solution-tag {
  font-size: .75rem;
  font-weight: 700;
  color: rgba(255,255,255,.8);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .75rem;
}
.qg-solution-card h2 { color: #fff !important; font-size: 1.3rem; font-weight: 700; margin: 0 0 .75rem; }
.qg-solution-card p { color: rgba(255,255,255,.8) !important; font-size: .9rem; line-height: 1.6; margin: 0 0 1rem; }
.qg-solution-benefits { list-style: none; margin: 0 0 1.25rem; padding: 0; }
.qg-solution-benefits li { color: rgba(255,255,255,.85) !important; font-size: .85rem; padding: .25rem 0; }
.qg-solution-benefits li::before { content: "✓ "; }
.qg-solution-link {
  display: inline-block;
  color: #fff !important;
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none !important;
  border-bottom: 1px solid rgba(255,255,255,.4);
  padding-bottom: .1rem;
  transition: var(--ease);
}
.qg-solution-link:hover { border-color: #fff; }

/* ── 响应式 ──────────────────────────────── */
@media(max-width:900px) {
  .qg-hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .qg-hero-visual { display: none; }
  .qg-features-grid, .qg-products-grid { grid-template-columns: repeat(2,1fr); }
  .qg-stats-grid { grid-template-columns: repeat(2,1fr); }
}
@media(max-width:900px) {
  .qg-product-detail-grid { grid-template-columns: 1fr; }
  .qg-archive-grid { grid-template-columns: repeat(2,1fr); }
  .qg-solutions-archive-grid { grid-template-columns: 1fr; }
}
@media(max-width:600px) {
  .qg-features-grid, .qg-products-grid, .qg-solutions-grid { grid-template-columns: 1fr; }
  .qg-stats-grid { grid-template-columns: repeat(2,1fr); }
  .qg-hero { min-height: auto; }
  .qg-hero-inner { padding: 3.5rem 1.25rem; }
  .qg-contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .qg-archive-grid { grid-template-columns: 1fr; }
  .qg-nav-toggle { display: block !important; }
  .qg-nav { display: none; }
  .qg-nav-cta { display: none !important; }
  /* 移动端展开态 */
  .qg-nav.qg-nav-open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255,255,255,.98);
    border-bottom: 1px solid var(--border);
    padding: .5rem 1.5rem 1rem;
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
    z-index: 999;
  }
  .qg-nav.qg-nav-open .qg-nav-list {
    flex-direction: column !important;
    gap: 0 !important;
    align-items: flex-start !important;
  }
  .qg-nav.qg-nav-open .qg-nav-list > li {
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  .qg-nav.qg-nav-open .qg-nav-list > li:last-child { border-bottom: none; }
  .qg-nav.qg-nav-open .qg-nav-list a {
    display: block;
    padding: .75rem 0;
  }
}