/* Set 1 — 清新橙绿效率风 */
:root {
  --orange: #f97316;
  --orange-dark: #ea580c;
  --orange-soft: rgba(249, 115, 22, 0.12);
  --green: #16a34a;
  --green-dark: #15803d;
  --green-soft: rgba(22, 163, 74, 0.12);
  --bg: #f4faf5;
  --bg-alt: #eef8f0;
  --surface: #ffffff;
  --text: #1a2e1f;
  --text-muted: #5a7260;
  --border: #d4e5d8;
  --shadow: 0 8px 28px rgba(22, 80, 40, 0.08);
  --radius: 14px;
  --radius-sm: 10px;
  --nav-h: 64px;
  --max: 1120px;
  --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.7;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(249, 115, 22, 0.1), transparent 50%),
    radial-gradient(ellipse 70% 40% at 90% 0%, rgba(22, 163, 74, 0.12), transparent 45%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 40%, #f7fcf8 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--green-dark);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--orange);
}

ul {
  list-style: none;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* —— Sticky Nav —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(244, 250, 245, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(212, 229, 216, 0.8);
}

.nav-inner {
  height: var(--nav-h);
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-links a {
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--orange-dark);
  background: var(--orange-soft);
}

.nav-cta {
  display: none;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: none;
  border-radius: 10px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.7rem 1.25rem;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  text-decoration: none;
  line-height: 1.3;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn:disabled {
  opacity: 0.75;
  cursor: wait;
}

.btn-primary {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #fb923c 0%, var(--orange) 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.42);
  color: #fff;
}

.btn-green {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.3);
}

.btn-green:hover:not(:disabled) {
  background: linear-gradient(135deg, #22c55e 0%, var(--green) 100%);
  transform: translateY(-1px);
  color: #fff;
}

.btn-outline {
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--orange);
  color: var(--orange-dark);
  background: var(--orange-soft);
}

.btn-lg {
  padding: 0.9rem 1.6rem;
  font-size: 1.02rem;
}

.btn-block {
  width: 100%;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* —— Hero —— */
.hero {
  padding: 3.5rem 0 3rem;
  text-align: center;
}

.hero-content {
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--orange-soft), var(--green-soft));
  color: var(--green-dark);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
  color: var(--orange);
}

.hero h1 {
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  background: linear-gradient(120deg, var(--text) 30%, var(--green-dark) 70%, var(--orange-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
  max-width: 640px;
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  padding-top: 0.5rem;
}

.hero-meta strong {
  display: block;
  font-size: 1.25rem;
  color: var(--orange-dark);
  font-weight: 700;
}

.hero-meta span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* —— Sections —— */
.section {
  padding: 3.5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid var(--border);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
  margin-bottom: 0.5rem;
}

.section-header h2 {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  margin-bottom: 0.65rem;
  line-height: 1.35;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* —— Feature Cards —— */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.35rem;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(249, 115, 22, 0.45);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-icon.orange {
  background: var(--orange-soft);
  color: var(--orange-dark);
}

.feature-icon.green {
  background: var(--green-soft);
  color: var(--green-dark);
}

.feature-card h3 {
  font-size: 1.08rem;
  margin-bottom: 0.55rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* —— Platforms —— */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.15rem;
}

.platform-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.2rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.platform-card .plat-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 0.9rem;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--orange-soft), var(--green-soft));
  color: var(--text);
}

.platform-card .plat-icon svg {
  width: 28px;
  height: 28px;
}

.platform-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.platform-card .plat-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* —— Deep Features —— */
.deep-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.deep-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow);
}

.deep-num {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--green));
}

.deep-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.deep-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.deep-item p + p {
  margin-top: 0.6rem;
}

/* —— Stats —— */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.15rem;
}

.stat-card {
  text-align: center;
  padding: 1.75rem 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.stat-card strong {
  display: block;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--orange-dark);
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.stat-card span {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* —— Reviews —— */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.review-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.stars {
  display: flex;
  gap: 2px;
  margin-bottom: 0.7rem;
  color: var(--orange);
}

.stars svg {
  width: 16px;
  height: 16px;
}

.review-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}

.review-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.review-author span {
  display: block;
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

/* —— Comparison Table —— */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

.compare-table th,
.compare-table td {
  padding: 0.85rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.compare-table th {
  background: linear-gradient(90deg, rgba(249, 115, 22, 0.08), rgba(22, 163, 74, 0.1));
  font-weight: 700;
}

.compare-table th:first-child,
.compare-table td:first-child {
  text-align: left;
  font-weight: 600;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table .highlight {
  color: var(--green-dark);
  font-weight: 700;
}

.compare-table .yes {
  color: var(--green);
  font-weight: 700;
}

.compare-table .partial {
  color: var(--orange);
}

/* —— FAQ —— */
.faq-list {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.15rem 1.15rem;
  box-shadow: 0 2px 10px rgba(22, 80, 40, 0.04);
}

.faq-list summary {
  cursor: pointer;
  padding: 0.95rem 0;
  font-weight: 600;
  font-size: 0.98rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--orange);
  flex-shrink: 0;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  padding: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
}

/* —— Download page —— */
.dl-hero {
  padding: 3rem 0 2.5rem;
}

.dl-hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.dl-hero-card h1 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 0.65rem;
  line-height: 1.35;
}

.dl-hero-card .lead {
  color: var(--text-muted);
  margin-bottom: 1.15rem;
  font-size: 0.98rem;
}

.dl-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 1.35rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.dl-specs strong {
  color: var(--text);
}

.dl-side {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(160deg, var(--orange-soft), var(--green-soft));
  border-radius: var(--radius);
  min-width: 200px;
}

.dl-side .big-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 0.75rem;
  color: var(--orange-dark);
}

.dl-side .big-icon svg {
  width: 64px;
  height: 64px;
}

.steps {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.step-item {
  counter-increment: step;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.2rem;
}

.step-item::before {
  content: counter(step);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.step-item h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.req-list,
.changelog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}

.req-list li {
  position: relative;
  padding-left: 1.35rem;
  margin-bottom: 0.65rem;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.req-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.changelog-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.changelog-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.changelog-item:first-child {
  padding-top: 0;
}

.changelog-item h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.changelog-item .ver {
  color: var(--orange-dark);
}

.changelog-item .date {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-alt);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
}

.changelog-item ul {
  padding-left: 1.1rem;
  list-style: disc;
}

.changelog-item li {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.security-note {
  background: linear-gradient(90deg, var(--green-soft), var(--orange-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
}

.security-note h3 {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.security-note p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* —— Article (zh-cn) —— */
.article {
  padding: 2.5rem 0 3.5rem;
}

.article-body {
  max-width: 760px;
  margin-inline: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow);
}

.article-body h1 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin-bottom: 1rem;
  line-height: 1.35;
}

.article-body .meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.article-body h2 {
  font-size: 1.2rem;
  margin: 1.75rem 0 0.65rem;
}

.article-body p {
  color: var(--text-muted);
  margin-bottom: 0.9rem;
  font-size: 0.98rem;
}

.article-body ul {
  margin: 0.5rem 0 1rem 1.25rem;
  list-style: disc;
}

.article-body li {
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.article-cta {
  margin-top: 2rem;
  padding: 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, var(--orange-soft), var(--green-soft));
  border-radius: var(--radius-sm);
}

.article-cta p {
  margin-bottom: 1rem;
  color: var(--text);
  font-weight: 500;
}

.article-cta .btn {
  display: inline-flex;
}

/* —— Footer —— */
.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.site-footer .safe {
  font-size: 0.9rem;
  color: var(--green-dark);
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.site-footer .copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 720px;
  margin-inline: auto;
  line-height: 1.65;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .features-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .platforms-grid,
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dl-hero-card {
    grid-template-columns: 1fr;
  }

  .dl-side {
    order: -1;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(244, 250, 245, 0.97);
    backdrop-filter: blur(12px);
    padding: 0.75rem 1rem 1rem;
    border-bottom: 1px solid var(--border);
    gap: 0.25rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-cta {
    display: inline-flex;
    padding: 0.4rem;
    background: transparent;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
  }

  .nav-cta svg {
    width: 22px;
    height: 22px;
  }

  .features-grid,
  .reviews-grid,
  .platforms-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .deep-item {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .article-body {
    padding: 1.5rem 1.15rem;
  }
}