/* 站点工具导航首页 — design token 与全站 SaaS 工具站风格对齐 */

:root {
  --home-nav-bg: rgba(15, 23, 42, 0.9);
  --home-nav-border: rgba(148, 163, 184, 0.12);
  --home-text: #0f172a;
  --home-muted: #64748b;
  --home-muted2: #94a3b8;
  --home-card-border: #e2e8f0;
  --home-accent: #2563eb;
  --home-accent-hover: #1d4ed8;
  --home-accent-soft: #eff6ff;
  --home-tint: rgba(59, 130, 246, 0.04);
  --home-page-bg: #eef2f6;
  --home-hero-text: #0f172a;
  --home-radius-sm: 10px;
  --home-radius-md: 14px;
  --home-radius-lg: 18px;
  --home-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --home-dur: 0.18s;
  --home-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --home-shadow-md: 0 2px 8px rgba(15, 23, 42, 0.06);
  --home-shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.05);
  --home-shadow-card-hover: 0 4px 16px rgba(15, 23, 42, 0.08);
  --home-shadow-btn: 0 1px 2px rgba(15, 23, 42, 0.05), 0 2px 6px rgba(37, 99, 235, 0.18);
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .home-card,
  .home-btn,
  .home-nav-link,
  .home-mock-card--float {
    transition: none !important;
  }
}

.home-page {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--home-text);
  background: var(--home-page-bg);
}

.home-page *,
.home-page *::before,
.home-page *::after {
  box-sizing: border-box;
}

.home-skip {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.home-skip:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 2000;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: #fff;
  border: 2px solid var(--home-accent);
  border-radius: 8px;
}

/* —— 顶栏 —— */
.home-nav {
  background: var(--home-nav-bg);
  backdrop-filter: saturate(1.15) blur(12px);
  -webkit-backdrop-filter: saturate(1.15) blur(12px);
  border-bottom: 1px solid var(--home-nav-border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 1px 8px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.home-nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.home-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: #f8fafc;
  border-radius: var(--home-radius-sm);
  padding: 0.2rem 0.35rem 0.2rem 0;
  margin: -0.2rem 0;
  transition: opacity var(--home-dur) var(--home-ease);
}

.home-brand:hover {
  opacity: 0.95;
}

.home-brand-mark {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: var(--home-radius-sm);
  background: var(--home-accent);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  flex-shrink: 0;
  position: relative;
}

.home-brand-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 5px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  opacity: 0.9;
}

.home-brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.08rem;
  min-width: 0;
}

.home-brand-name {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.home-brand-tagline {
  font-size: 0.68rem;
  font-weight: 500;
  color: #94a3b8;
  letter-spacing: 0.04em;
  text-transform: none;
}

.home-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.2rem;
}

.home-nav-link {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.42rem 0.72rem;
  border-radius: var(--home-radius-sm);
  transition: color var(--home-dur) var(--home-ease), background var(--home-dur) var(--home-ease),
    box-shadow var(--home-dur) var(--home-ease);
}

.home-nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.home-nav-link[aria-current="page"] {
  color: #fff;
  background: rgba(59, 130, 246, 0.28);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.home-nav-link:focus-visible {
  outline: 2px solid #60a5fa;
  outline-offset: 2px;
}

/* —— Hero —— */
.home-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid #e2e8f0;
  padding: 2.25rem 1.25rem 2.65rem;
}

.home-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 72% 50% at 8% 12%, rgba(59, 130, 246, 0.055) 0%, transparent 50%),
    radial-gradient(ellipse 48% 42% at 94% 78%, rgba(99, 102, 241, 0.04) 0%, transparent 46%),
    linear-gradient(180deg, #f8fafc 0%, #f1f5f9 45%, var(--home-page-bg) 100%);
  pointer-events: none;
}

.home-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, transparent 75%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, transparent 75%);
}

.home-hero-inner {
  position: relative;
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 380px);
  gap: 2rem 2.5rem;
  align-items: center;
}

.home-hero-copy {
  min-width: 0;
}

.home-hero-eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #1d4ed8;
}

.home-hero-title {
  margin: 0 0 0.55rem;
  font-size: clamp(1.75rem, 4vw, 2.45rem);
  font-weight: 800;
  color: var(--home-hero-text);
  letter-spacing: -0.03em;
  line-height: 1.14;
}

.home-hero-lead {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  color: #475569;
  line-height: 1.65;
  max-width: 32rem;
}

.home-hero-note {
  margin: 0 0 1.1rem;
  font-size: 0.8125rem;
  color: var(--home-muted);
  max-width: 29rem;
  line-height: 1.55;
}

.home-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--home-radius-md);
  text-decoration: none;
  transition: transform var(--home-dur) var(--home-ease), box-shadow var(--home-dur) var(--home-ease),
    background var(--home-dur) var(--home-ease), border-color var(--home-dur) var(--home-ease);
  border: 1px solid transparent;
}

.home-btn-primary {
  background: var(--home-accent);
  color: #fff;
  box-shadow: var(--home-shadow-btn);
}

.home-btn-primary:hover {
  background: var(--home-accent-hover);
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(37, 99, 235, 0.22);
  transform: translateY(-1px);
}

.home-btn-secondary {
  background: #fff;
  color: #334155;
  border-color: var(--home-card-border);
  box-shadow: var(--home-shadow-sm);
}

.home-btn-secondary:hover {
  border-color: #cbd5e1;
  background: #fafbfc;
  transform: translateY(-1px);
  box-shadow: var(--home-shadow-md);
}

.home-btn:focus-visible {
  outline: 2px solid var(--home-accent);
  outline-offset: 2px;
}

/* Hero 右侧示意 */
.home-hero-visual {
  position: relative;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-hero-glow {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
  filter: blur(20px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.home-hero-mock {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.home-mock-window {
  background: #fff;
  border-radius: var(--home-radius-lg);
  border: 1px solid var(--home-card-border);
  box-shadow: var(--home-shadow-card), 0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  overflow: hidden;
}

.home-mock-dots {
  display: flex;
  gap: 6px;
  padding: 0.65rem 0.85rem;
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom: 1px solid #e2e8f0;
}

.home-mock-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #cbd5e1;
}

.home-mock-dots span:nth-child(1) {
  background: #f87171;
}

.home-mock-dots span:nth-child(2) {
  background: #fbbf24;
}

.home-mock-dots span:nth-child(3) {
  background: #4ade80;
}

.home-mock-body {
  padding: 1rem 1rem 1.2rem;
  position: relative;
}

.home-mock-line {
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #e2e8f0 0%, #f1f5f9 100%);
  margin-bottom: 0.55rem;
}

.home-mock-line--long {
  width: 100%;
}

.home-mock-line--mid {
  width: 72%;
}

.home-mock-line--short {
  width: 45%;
  margin-bottom: 1rem;
}

.home-mock-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--home-accent);
  background: var(--home-accent-soft);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  letter-spacing: 0.04em;
}

.home-mock-card {
  position: absolute;
  right: -4%;
  bottom: 8%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  background: #fff;
  border: 1px solid var(--home-card-border);
  border-radius: var(--home-radius-md);
  box-shadow: var(--home-shadow-md);
  transition: box-shadow var(--home-dur) var(--home-ease), transform var(--home-dur) var(--home-ease);
}

.home-mock-card-icon {
  font-size: 0.65rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(145deg, #64748b, #475569);
  padding: 0.2rem 0.35rem;
  border-radius: 5px;
  letter-spacing: 0.02em;
}

.home-mock-card-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
}

/* —— 主体工具区 —— */
.home-main {
  max-width: 1140px;
  margin: 0 auto;
  padding: 2.4rem 1.25rem 3rem;
}

.home-section {
  margin-bottom: 2.5rem;
}

.home-section:last-of-type {
  margin-bottom: 0;
}

.home-section-head {
  margin-bottom: 1.05rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.home-section-head-text {
  min-width: 0;
}

.home-section-title {
  margin: 0 0 0.35rem;
  font-size: 1.28rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.022em;
  line-height: 1.25;
}

.home-section-lead {
  margin: 0;
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.52;
  max-width: 34rem;
}

.home-section-desc {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--home-muted2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.15rem;
}

.home-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.25rem 1.3rem 1.15rem;
  background: #fafbfc;
  border: 1px solid var(--home-card-border);
  border-radius: var(--home-radius-lg);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--home-shadow-card);
  transition: border-color var(--home-dur) var(--home-ease), box-shadow var(--home-dur) var(--home-ease),
    transform var(--home-dur) var(--home-ease), background var(--home-dur) var(--home-ease);
}

.home-card:hover {
  background: #fff;
  border-color: #d1d9e3;
  box-shadow: var(--home-shadow-card-hover);
  transform: translateY(-2px);
}

.home-card:focus-visible {
  outline: 2px solid var(--home-accent);
  outline-offset: 3px;
}

.home-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.home-card-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--home-radius-sm);
  flex-shrink: 0;
}

.home-card-icon--doc {
  background: linear-gradient(145deg, #dbeafe 0%, #bfdbfe 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  position: relative;
}

.home-card-icon--doc::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 18px;
  border-radius: 2px;
  border: 2px solid var(--home-accent);
  border-top-width: 5px;
  opacity: 0.85;
}

.home-card-icon--pdf {
  background: linear-gradient(145deg, #fee2e2 0%, #fecaca 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  position: relative;
}

.home-card-icon--pdf::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 10px;
  border: 2px solid #b91c1c;
  border-radius: 2px;
  opacity: 0.75;
}

.home-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.home-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.22rem 0.48rem;
  border-radius: var(--home-radius-sm);
  background: var(--home-accent-soft);
  color: var(--home-accent);
  letter-spacing: 0.02em;
}

.home-tag--muted {
  background: #f1f5f9;
  color: #64748b;
}

.home-card-title {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.home-card-desc {
  margin: 0;
  flex: 1;
  font-size: 0.875rem;
  color: var(--home-muted);
  line-height: 1.55;
}

.home-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid #f1f5f9;
}

.home-card-arrow {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--home-accent);
}

.home-card-chevron {
  font-size: 1rem;
  color: var(--home-accent);
  opacity: 0.7;
  transition: transform var(--home-dur) var(--home-ease);
}

.home-card:hover .home-card-chevron {
  transform: translateX(2px);
}

/* 更多区占位 */
.home-placeholder {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1.2rem 1.3rem;
  background: #fff;
  border: 1px dashed #cbd5e1;
  border-radius: var(--home-radius-lg);
  box-shadow: var(--home-shadow-sm);
}

.home-placeholder-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--home-radius-sm);
  background: linear-gradient(145deg, #f1f5f9, #e2e8f0);
  flex-shrink: 0;
  margin-top: 0.1rem;
  position: relative;
}

.home-placeholder-icon::after {
  content: "⋯";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #64748b;
  font-weight: 700;
  line-height: 1;
}

.home-placeholder-text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--home-muted);
  line-height: 1.6;
}

.home-inline-link {
  color: var(--home-accent);
  font-weight: 600;
  text-decoration: none;
}

.home-inline-link:hover {
  text-decoration: underline;
}

/* —— 页脚 —— */
.home-footer {
  border-top: 1px solid #e2e8f0;
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 1.65rem 1.25rem 2rem;
}

.home-footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  text-align: center;
  padding: 0.5rem 1rem;
  border-radius: var(--home-radius-md);
  border: 1px solid rgba(226, 232, 240, 0.8);
  background: rgba(255, 255, 255, 0.65);
}

.home-footer-line {
  margin: 0 0 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #475569;
  letter-spacing: 0.01em;
}

.home-footer-sub {
  margin: 0;
  font-size: 0.7rem;
  color: #94a3b8;
  line-height: 1.55;
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

/* —— 响应式 —— */
@media (max-width: 900px) {
  .home-hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .home-hero-visual {
    order: -1;
    min-height: 180px;
  }

  .home-mock-card {
    right: 0;
    bottom: 0;
  }
}

@media (max-width: 600px) {
  .home-nav-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .home-nav-links {
    width: 100%;
    justify-content: flex-start;
  }

  .home-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .home-section-desc {
    white-space: normal;
  }

  .home-hero {
    padding: 1.75rem 1.1rem 2.25rem;
  }

  .home-main {
    padding: 2rem 1.1rem 2.5rem;
  }

  .home-hero-cta {
    flex-direction: column;
  }

  .home-btn {
    width: 100%;
  }
}