/* ============================================================
   Inkwell Engine 官网 · site.css — 资讯/文档/产品/方案/案例/定价/关于
   仅依赖 base.css 的设计 token（--bg-*/--ink-*/--text-*/--card/…），
   布局壳（nav/footer/.section/.wrap/.btn）由 landing.css 提供。
   ============================================================ */

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--text-low-strong);
  margin-bottom: 26px; letter-spacing: 0.02em;
}
.breadcrumb a { color: var(--text-mid); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink-cyan); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .here { color: var(--text-hi); }

/* ---------- 栏目页头 ---------- */
.page-head { padding: 72px 0 8px; }
.page-head .eyebrow {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.32em;
  color: var(--ink-cyan); text-transform: uppercase; margin-bottom: 14px;
}
.page-head h1 {
  font-family: var(--font-display); font-size: 40px; font-weight: 600;
  letter-spacing: 0.01em; line-height: 1.25;
}
.page-head .page-sub { color: var(--text-mid); margin-top: 14px; max-width: 720px; font-size: 15px; }

/* ---------- 列表卡片 ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  padding: 34px 0 20px;
}
@media (max-width: 960px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }
.art-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 22px 18px;
  text-decoration: none; transition: transform 0.25s ease, border-color 0.25s ease;
}
.art-card:hover { transform: translateY(-3px); border-color: rgba(52, 224, 232, 0.35); }
.art-card .meta { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--text-low-strong); font-family: var(--font-mono); }
.art-card .tag {
  font-size: 11px; padding: 1px 9px; border-radius: 20px;
  border: 1px solid var(--line); color: var(--ink-cyan); letter-spacing: 0.05em;
}
.art-card h3 { font-size: 17.5px; font-weight: 600; line-height: 1.5; color: var(--text-hi); display: flex; align-items: center; gap: 10px; }
.art-card h3 .ic { width: 24px; height: 24px; flex: none; color: var(--ink-cyan); transition: color 0.25s ease, transform 0.25s ease; }
.art-card:hover h3 .ic { color: var(--ink-violet); transform: translateY(-2px) scale(1.08); }
.art-card p { color: var(--text-mid); font-size: 13.5px; line-height: 1.75; flex: 1; }
.art-card .more { font-size: 13px; color: var(--ink-blue); }

/* 单卡/少卡通栏 feature 卡：避免左列孤卡 + 大片留白 */
.art-card.feature { grid-column: 1 / -1; flex-direction: row; align-items: center; gap: 26px; padding: 26px 30px; background: linear-gradient(120deg, rgba(16, 30, 56, 0.52), rgba(20, 38, 70, 0.6)); }
.art-card.feature .meta { flex: none; }
.art-card.feature h3 { flex: 1; font-size: 18px; }
.art-card.feature p { flex: 2; }
.art-card.feature .more { flex: none; white-space: nowrap; }
@media (max-width: 860px) { .art-card.feature { flex-direction: column; align-items: flex-start; gap: 10px; } }

/* ---------- 文章正文 ---------- */
.article-head { padding: 64px 0 6px; max-width: 860px; margin: 0 auto; }
.article-head .meta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; font-size: 12.5px; color: var(--text-low-strong); font-family: var(--font-mono); margin-bottom: 18px; }
.article-head .tag { font-size: 11px; padding: 1px 10px; border-radius: 20px; border: 1px solid rgba(52, 224, 232, 0.4); color: var(--ink-cyan); }
.article-head h1 { font-family: var(--font-display); font-size: 34px; font-weight: 600; line-height: 1.35; }
.article-head .desc { color: var(--text-mid); margin-top: 14px; font-size: 15px; line-height: 1.8; }

.prose { max-width: 860px; margin: 30px auto 0; font-size: 15.5px; color: var(--text-mid-strong); }
.prose h2 {
  font-family: var(--font-display); color: var(--text-hi);
  font-size: 24px; margin: 44px 0 16px; padding-left: 14px;
  border-left: 3px solid var(--ink-blue); line-height: 1.4;
}
.prose h3 { color: var(--text-hi); font-size: 19px; margin: 32px 0 12px; }
.prose h4 { color: var(--text-hi); font-size: 16px; margin: 24px 0 10px; }
.prose p { margin: 14px 0; line-height: 1.9; }
.prose a { color: var(--ink-cyan); text-decoration: none; border-bottom: 1px solid rgba(52, 224, 232, 0.35); }
.prose a:hover { border-bottom-color: var(--ink-cyan); }
.prose strong { color: var(--text-hi); font-weight: 600; }
.prose em { color: var(--ink-amber); font-style: normal; }
.prose ul, .prose ol { margin: 14px 0 14px 22px; display: grid; gap: 8px; }
.prose li { line-height: 1.8; }
.prose ul li::marker { color: var(--ink-cyan); }
.prose blockquote {
  margin: 20px 0; padding: 14px 20px;
  border-left: 3px solid var(--ink-violet);
  background: rgba(139, 92, 246, 0.06); border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-mid); font-size: 14.5px;
}
.prose code {
  font-family: var(--font-mono); font-size: 13px;
  background: rgba(52, 224, 232, 0.08); color: var(--ink-cyan);
  padding: 2px 7px; border-radius: 6px;
}
.prose pre {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; margin: 18px 0;
  overflow-x: auto;
}
.prose pre code { background: none; padding: 0; color: var(--text-mid); font-size: 12.5px; line-height: 1.7; }
.prose img { max-width: 100%; border-radius: var(--radius); border: 1px solid var(--line); margin: 18px 0; }
.prose hr { border: none; border-top: 1px solid var(--line-soft); margin: 32px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; line-height: 1.7; }
.prose th { color: var(--text-hi); background: rgba(16, 30, 56, 0.5); font-weight: 600; }

/* 文末来源引用（新闻简报等） */
.sources { max-width: 860px; margin: 34px auto 0; padding: 18px 22px; border: 1px dashed var(--line); border-radius: var(--radius); }
.sources .s-title { font-size: 12px; font-family: var(--font-mono); letter-spacing: 0.2em; color: var(--text-low-strong); margin-bottom: 10px; }
.sources li { font-size: 13.5px; margin: 6px 0 6px 18px; }
.sources a { color: var(--ink-blue); text-decoration: none; }

/* ---------- 定价 ---------- */
.price-mode-note {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 24px; margin-top: 6px;
  border: 1px solid rgba(255, 180, 61, 0.4); color: var(--ink-amber);
  font-size: 13px; background: rgba(255, 180, 61, 0.06);
}
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 40px 0 10px; }
@media (max-width: 960px) { .tier-grid { grid-template-columns: 1fr; } }
.tier-card {
  position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 28px; display: flex; flex-direction: column; gap: 6px;
}
.tier-card.hot { border-color: rgba(52, 224, 232, 0.45); background: var(--card-raise); }
.tier-card .ribbon {
  position: absolute; top: 18px; right: -1px;
  font-size: 12px; letter-spacing: 0.14em; font-weight: 600; color: #061020;
  background: linear-gradient(100deg, var(--ink-cyan), var(--ink-blue));
  padding: 5px 16px 5px 18px; border-radius: 8px 0 0 8px;
  box-shadow: 0 4px 18px rgba(52, 224, 232, 0.25);
}
.tier-card .t-name { font-size: 20px; font-weight: 700; color: var(--text-hi); }
.tier-card .t-aud { font-size: 13px; color: var(--text-low-strong); }
.tier-card .t-price { margin: 14px 0 6px; font-family: var(--font-display); }
.tier-card .t-price .num { font-size: 38px; font-weight: 700; background: var(--grad-ink); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tier-card .t-price .contact { font-size: 22px; color: var(--ink-amber); font-weight: 600; letter-spacing: 0.06em; }
.tier-card .t-price .unit { font-size: 13px; color: var(--text-low-strong); margin-left: 6px; }
.tier-card .price-was { display: block; margin-top: 2px; font-size: 13px; color: var(--text-low-strong); }
.tier-card .price-was s { text-decoration-color: rgba(255, 79, 163, 0.7); text-decoration-thickness: 2px; }
.tier-card ul { list-style: none; display: grid; gap: 9px; margin: 12px 0 22px; flex: 1; }
.tier-card ul li { font-size: 13.5px; color: var(--text-mid); padding-left: 22px; position: relative; line-height: 1.6; }
.tier-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--ink-cyan); font-weight: 700; }
.faq-list { max-width: 860px; margin: 30px auto 0; display: grid; gap: 14px; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 24px; transition: border-color 0.25s ease; }
.faq-item[open] { border-color: rgba(52, 224, 232, 0.35); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 19px 0; color: var(--text-hi); font-weight: 600; font-size: 15.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; flex: none; font-family: var(--font-mono); font-size: 19px; font-weight: 400;
  color: var(--ink-cyan); transition: transform 0.25s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .a { color: var(--text-mid); font-size: 14px; line-height: 1.85; padding: 0 0 20px; }

/* ---------- 联系我们 · 微信二维码卡 ---------- */
.contact-row { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; }
.contact-row > p { flex: 1 1 260px; }
.qr-card {
  flex: none; margin: 14px 0; text-align: center;
  background: #f5f8ff; border: 1px solid rgba(140, 170, 220, 0.25); border-radius: var(--radius-lg);
  padding: 14px 14px 12px; width: 190px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.qr-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35); }
.qr-card img { display: block; width: 148px; height: 148px; border-radius: 12px; }
.qr-card figcaption { margin-top: 8px; font-size: 12.5px; color: #33415e; line-height: 1.5; }
.qr-card figcaption span { display: block; margin-top: 2px; font-size: 11px; color: #7787a3; font-family: var(--font-mono); }

/* ---------- 404 ---------- */
.nf-stage { max-width: 720px; margin: 0 auto; padding: 84px 20px 40px; text-align: center; }
.nf-drop { width: 132px; height: 132px; margin: 0 auto 8px; display: block; animation: nf-float 3.6s ease-in-out infinite; }
@keyframes nf-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@media (prefers-reduced-motion: reduce) { .nf-drop { animation: none; } }
.nf-code {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.5em; color: var(--text-low-strong);
  margin-bottom: 12px;
}
.nf-stage h1 { font-family: var(--font-display); font-size: 32px; font-weight: 600; color: var(--text-hi); }
.nf-sub { color: var(--text-mid); margin-top: 14px; }
.nf-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

/* ---------- 通用 ---------- */
.empty-hint { color: var(--text-low-strong); font-size: 14px; padding: 30px 0 10px; }
.cta-strip {
  margin: 60px 0 20px; padding: 30px 34px;
  background: linear-gradient(120deg, rgba(52, 224, 232, 0.07), rgba(139, 92, 246, 0.09));
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between;
}
.cta-strip .cta-text { color: var(--text-mid); font-size: 15px; }
.cta-strip .cta-text b { color: var(--text-hi); }

/* ---------- 公司门户首页 / 产品线总览 ---------- */
.home-hero { padding: 100px 0 24px; position: relative; z-index: 1; }
.home-hero .eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.32em; color: var(--ink-cyan); margin-bottom: 20px; }
.home-hero h1 { font-family: var(--font-display); font-size: 42px; font-weight: 600; line-height: 1.32; }
.home-hero .line2 { display: block; }
.home-hero .ink-text { background: var(--grad-ink); -webkit-background-clip: text; background-clip: text; color: transparent; }
.home-hero .sub { color: var(--text-mid); margin-top: 18px; max-width: 780px; font-size: 16px; line-height: 1.85; }
.home-hero .hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.home-hero .hero-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.home-hero .hero-chips span { font-size: 12.5px; color: var(--text-mid); border: 1px solid var(--line); border-radius: 20px; padding: 5px 14px; background: rgba(16, 30, 56, 0.4); }
.home-hero .hero-chips b { color: var(--ink-cyan); margin-right: 4px; }
.home-section { padding-top: 30px; }
.home-line { margin: 24px 0; padding: 26px 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.home-line .hl-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.home-line h3 { font-family: var(--font-display); font-size: 24px; }
.home-line .hl-tag { color: var(--text-low-strong); font-size: 13px; margin-top: 2px; }
.home-line .hl-desc { color: var(--text-mid); font-size: 14px; line-height: 1.8; margin: 12px 0 4px; }
.home-line .hl-links { display: flex; gap: 14px; }
.home-line .card-grid { padding: 18px 0 4px; }
@media (max-width: 640px) {
  .home-hero { padding-top: 72px; }
  .home-hero h1 { font-size: 30px; }
  .home-line { padding: 20px 18px; }
}

/* ============================================================
   门户升级（2026-09-02）：hero 视觉 / 能力带 / 四步 / 为什么 / 联系面板 / 页脚
   ============================================================ */

/* ---------- hero 双栏 + 视觉卡 ---------- */
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 40px; align-items: center; }
.hero-visual { position: relative; min-height: 320px; }
.hero-visual::before {
  content: ""; position: absolute; inset: -8% -6%;
  background:
    radial-gradient(320px 220px at 70% 30%, rgba(61, 139, 255, 0.16), transparent 70%),
    radial-gradient(260px 200px at 20% 80%, rgba(139, 92, 246, 0.14), transparent 70%);
  filter: blur(6px);
}
.hv-orbit { position: absolute; inset: 12% -4% auto; animation: hv-drift 9s ease-in-out infinite; }
.hv-orbit svg { width: 100%; height: auto; display: block; }
.hv-card {
  position: relative; z-index: 1;
  background: var(--card-raise); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 16px 20px;
  box-shadow: 0 18px 44px rgba(2, 6, 18, 0.45);
  backdrop-filter: blur(4px);
}
.hv-card.hv-ask {
  position: absolute; left: 0; top: 34%;
  display: flex; align-items: center; gap: 10px;
  font-size: 14.5px; color: var(--text-hi);
  animation: hv-float 5.2s ease-in-out infinite;
}
.hv-caret { width: 9px; height: 9px; border-radius: 50%; background: var(--grad-ink); flex: none; animation: hv-pulse 2.4s ease-in-out infinite; }
.hv-card.hv-done { position: absolute; right: 0; top: 52%; width: min(300px, 86%); animation: hv-float 6.2s ease-in-out 0.8s infinite; }
.hv-done .hv-title {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--ink-cyan); margin-bottom: 10px;
}
.hv-done ul { list-style: none; display: grid; gap: 8px; }
.hv-done li { font-size: 13px; color: var(--text-mid); padding-left: 20px; position: relative; }
.hv-done li::before { content: "✓"; position: absolute; left: 0; color: var(--ink-cyan); font-weight: 700; }
@keyframes hv-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes hv-drift { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes hv-pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(52, 224, 232, 0.5); } 50% { box-shadow: 0 0 0 7px rgba(52, 224, 232, 0); } }

/* ---------- 能力带 ---------- */
.band { margin-top: 34px; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); background: rgba(11, 23, 48, 0.35); }
.band-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px 0; padding: 14px 0; }
.band-row span { font-size: 13px; color: var(--text-mid); letter-spacing: 0.06em; }
.band-row i { width: 5px; height: 5px; border-radius: 50%; background: var(--ink-cyan); opacity: 0.55; margin: 0 18px; flex: none; }

/* ---------- 居中板块头 ---------- */
.hp-center { text-align: center; padding-top: 64px; }
.hp-center .page-sub { margin-left: auto; margin-right: auto; }
.hp-center .eyebrow { display: block; }

/* ---------- 四步交付 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 40px 0 8px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 30px; left: 6%; right: 6%; height: 1.5px;
  background: linear-gradient(90deg, transparent, rgba(52, 224, 232, 0.5), rgba(139, 92, 246, 0.5), rgba(255, 79, 163, 0.4), transparent);
  opacity: 0.5;
}
.step { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px 20px; transition: transform 0.25s ease, border-color 0.25s ease; }
.step:hover { transform: translateY(-4px); border-color: rgba(52, 224, 232, 0.4); }
.step .s-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 14px; margin-bottom: 14px;
  font-family: var(--font-mono); font-size: 15px; font-weight: 700; color: #061020;
  background: var(--grad-ink); box-shadow: 0 8px 22px rgba(61, 139, 255, 0.3);
  position: relative; z-index: 1;
}
.step h3 { font-size: 16.5px; color: var(--text-hi); margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--text-mid); line-height: 1.75; }

/* ---------- 为什么 / 交付卡（渐变描边图标 + 浮动） ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 36px 0 6px; }
.why-grid.three { grid-template-columns: repeat(3, 1fr); }
.why-card {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px 22px; transition: transform 0.25s ease, border-color 0.25s ease;
}
.why-card::before {
  content: ""; position: absolute; width: 130px; height: 130px; border-radius: 50%;
  top: -46px; right: -40px; pointer-events: none;
  background: radial-gradient(circle, rgba(61, 139, 255, 0.16), transparent 70%);
}
.why-card:hover { transform: translateY(-4px); border-color: rgba(139, 92, 246, 0.45); }
.why-card .ic { width: 30px; height: 30px; margin-bottom: 14px; animation: ic-float 4.6s ease-in-out infinite; }
.why-card:nth-child(2) .ic { animation-delay: 0.6s; }
.why-card:nth-child(3) .ic { animation-delay: 1.2s; }
.why-card:nth-child(4) .ic { animation-delay: 1.8s; }
@keyframes ic-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
.why-card h3 { font-size: 16px; color: var(--text-hi); margin-bottom: 8px; }
.why-card p { font-size: 13px; color: var(--text-mid); line-height: 1.8; }

/* ---------- 定价「所有版本都包含」 ---------- */
.includes {
  margin-top: 34px; padding: 26px 30px;
  background: var(--card); border: 1px dashed rgba(140, 170, 220, 0.3); border-radius: var(--radius-lg);
}
.includes .inc-head { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em; color: var(--ink-cyan); margin-bottom: 16px; }
.inc-list { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 22px; }
.inc-list li { font-size: 13.5px; color: var(--text-mid); padding-left: 22px; position: relative; line-height: 1.7; }
.inc-list li::before { content: "✓"; position: absolute; left: 0; color: var(--ink-cyan); font-weight: 700; }

/* ---------- 联系大区块 ---------- */
.contact-panel {
  position: relative; overflow: hidden;
  margin: 56px 0 20px; padding: 40px 44px;
  background: linear-gradient(120deg, rgba(52, 224, 232, 0.08), rgba(139, 92, 246, 0.10) 55%, rgba(255, 79, 163, 0.05));
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  display: grid; grid-template-columns: 1fr auto; gap: 34px; align-items: center;
}
.cp-orb {
  position: absolute; width: 300px; height: 300px; border-radius: 50%; right: 16%; top: -140px; pointer-events: none;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
  animation: cp-breathe 7s ease-in-out infinite;
}
@keyframes cp-breathe { 0%, 100% { transform: scale(1); opacity: 0.8; } 50% { transform: scale(1.18); opacity: 1; } }
.cp-copy { position: relative; }
.cp-copy .eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.32em; color: var(--ink-cyan); margin-bottom: 12px; }
.cp-copy h2 { font-family: var(--font-display); font-size: 28px; color: var(--text-hi); margin-bottom: 10px; }
.cp-copy p { color: var(--text-mid); font-size: 14.5px; max-width: 560px; }
.cp-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.cp-note { margin-top: 14px !important; font-size: 12.5px !important; color: var(--text-low-strong) !important; }
.cp-qr {
  position: relative; margin: 0; text-align: center;
  background: #f5f8ff; border-radius: var(--radius-lg); padding: 14px 16px 12px;
  box-shadow: 0 16px 40px rgba(2, 6, 18, 0.4);
  transition: transform 0.25s ease;
}
.cp-qr:hover { transform: translateY(-4px); }
.cp-qr img { display: block; width: 136px; height: 136px; border-radius: 12px; }
.cp-qr figcaption { margin-top: 8px; font-size: 12.5px; color: #33415e; }
.cp-qr figcaption span { display: block; margin-top: 2px; font-size: 11px; color: #7787a3; font-family: var(--font-mono); }

/* ---------- 关于页 ---------- */
.about-intro { margin-top: 26px; }
.about-products { padding-top: 26px; }
.about-h2 { font-family: var(--font-display); color: var(--text-hi); font-size: 26px; margin: 44px 0 0; }
.about-note {
  margin: 30px 0 0; padding: 16px 22px;
  border-left: 3px solid var(--ink-violet);
  background: rgba(139, 92, 246, 0.07); border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-mid); font-size: 14px;
}

/* ---------- 新页脚（全站二维码入口） ---------- */
.footer { margin-top: 70px; border-top: 1px solid var(--line-soft); background: linear-gradient(180deg, rgba(11, 23, 48, 0.25), rgba(5, 8, 15, 0.9)); position: relative; z-index: 1; }
.f-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 36px; padding: 48px 0 40px; }
.f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.f-logo img { width: 38px; height: 38px; }
.fwm { font-family: var(--font-display); font-size: 19px; color: var(--text-hi); letter-spacing: 0.03em; }
.fwm small { font-family: var(--font-body); font-size: 11px; color: var(--text-low-strong); margin-left: 8px; letter-spacing: 0.3em; vertical-align: 2px; }
.f-tag { font-size: 13px; color: var(--text-low-strong); line-height: 1.8; max-width: 300px; }
.f-qr { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
.f-qr img {
  display: block; width: 104px; height: 104px; border-radius: 10px;
  background: #f5f8ff; padding: 0;
  box-shadow: 0 10px 26px rgba(2, 6, 18, 0.45);
  transition: transform 0.25s ease;
}
.f-qr img:hover { transform: translateY(-3px); }
.f-qr-t b { display: block; font-size: 13.5px; color: var(--text-hi); margin-bottom: 4px; }
.f-qr-t span { font-size: 12px; color: var(--text-low-strong); line-height: 1.7; }
.f-col h4 { font-size: 13px; font-family: var(--font-mono); letter-spacing: 0.2em; color: var(--text-mid-strong); margin-bottom: 16px; font-weight: 600; }
.f-col a { display: block; font-size: 13.5px; color: var(--text-low-strong); text-decoration: none; padding: 5px 0; transition: color 0.2s ease; }
.f-col a:hover { color: var(--ink-cyan); }
.f-contact .f-tel { font-family: var(--font-display); font-size: 22px; color: var(--text-hi) !important; letter-spacing: 0.02em; }
.f-contact .f-note { display: block; font-size: 12px; color: var(--text-low-strong); padding: 4px 0 8px; }
.f-contact .f-demo { font-size: 13px; }
.f-contact .f-demo em { font-style: normal; color: var(--ink-blue); margin-left: 6px; }
.f-bar { border-top: 1px solid var(--line-soft); }
.f-bar-inner { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; justify-content: space-between; padding: 16px 0; font-size: 12px; color: var(--text-low-strong); }
.f-bar a { color: var(--text-low-strong); text-decoration: none; }
.f-bar a:hover { color: var(--text-mid); }
.f-right { font-family: var(--font-display); letter-spacing: 0.06em; opacity: 0.8; }

/* ---------- 升级区响应式 ---------- */
@media (max-width: 1060px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 280px; max-width: 480px; }
  .f-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .why-grid, .why-grid.three { grid-template-columns: repeat(2, 1fr); }
  .inc-list { grid-template-columns: repeat(2, 1fr); }
  .contact-panel { grid-template-columns: 1fr; padding: 32px 26px; }
  .cp-qr { justify-self: center; }
}
@media (max-width: 640px) {
  .hero-visual { min-height: 240px; }
  .hv-done { width: 92%; }
  .steps, .why-grid, .why-grid.three, .inc-list { grid-template-columns: 1fr; }
  .band-row i { margin: 0 10px; }
  .f-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  .hv-card, .hv-orbit, .hv-caret, .cp-orb, .why-card .ic { animation: none !important; }
}