:root {
  --bg: #fff7f0;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #ff7b1a;
  --primary-2: #ff9f43;
  --primary-3: #ff6a00;
  --card: #ffffff;
  --line: #f3e2d3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fff8f2 0%, #fff 35%, #fff8f1 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

.section {
  padding: 72px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 123, 26, 0.12);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-size: 20px;
  font-weight: 700;
}

.brand img {
  display: block;
  width: 130px;
  height: 35px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: 26px;
  color: #374151;
  font-weight: 600;
}

.main-nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-3);
  border-bottom-color: var(--primary-3);
}

.mobile-nav {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-demo,
.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, var(--primary-3), var(--primary-2));
  box-shadow: 0 8px 22px rgba(255, 106, 0, 0.26);
}

.btn-light {
  color: var(--primary-3);
  background: rgba(255, 123, 26, 0.08);
}

.hero {
  padding-top: 170px;
}

.hero-stack {
  text-align: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(34px, 4.8vw, 54px);
  line-height: 1.15;
  letter-spacing: 0.5px;
}

.hero-subtitle {
  max-width: 840px;
  margin: 20px auto 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero-points {
  margin: 22px auto 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.hero-points span {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid #f8d7bb;
  background: #fff7ef;
  color: #9a3412;
  font-weight: 600;
  font-size: 14px;
}

.hero-actions {
  margin-top: 18px;
  display: flex;
  justify-content: center;
  gap: 12px;
}

.hero-image-wrap {
  margin-top: 40px;
}

.hero-image-card {
  border-radius: 0;
  overflow: visible;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.hero-image-card img {
  display: block;
  width: 100%;
  height: auto;
}

.section-title {
  text-align: center;
  margin-bottom: 38px;
}

.section-title h2 {
  margin: 0 0 12px;
  font-size: clamp(30px, 3.5vw, 40px);
}

.section-title p {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 28px rgba(17, 24, 39, 0.04);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.pricing-section {
  background: linear-gradient(180deg, rgba(255, 123, 26, 0.05), rgba(255, 123, 26, 0.02));
}

#pricing {
  scroll-margin-top: 120px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.price-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
}

.price-card h3 {
  margin: 0;
  font-size: 24px;
}

.price-main {
  margin: 14px 0 16px;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-3);
}

.price-main span {
  font-size: 16px;
  color: var(--muted);
  margin-left: 6px;
}

.price-card ul {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: #4b5563;
  line-height: 1.6;
}

.price-card .btn {
  margin-top: auto;
}

.price-card.featured {
  background: linear-gradient(170deg, #fff5eb 0%, #fff 58%);
  border: 1px solid #ffcfab;
  box-shadow: 0 14px 40px rgba(251, 146, 60, 0.25);
}

.tag {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(120deg, var(--primary-3), var(--primary-2));
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.split-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.split-layout h2 {
  margin: 0 0 12px;
  font-size: clamp(30px, 3.5vw, 40px);
}

.split-layout p {
  margin: 0 0 20px;
  color: var(--muted);
  line-height: 1.8;
}

.tutorial-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
}

.tutorial-panel h3 {
  margin: 0 0 12px;
}

.tutorial-panel ul {
  margin: 0;
  padding-left: 18px;
  color: #4b5563;
  line-height: 1.9;
}

.tutorial-entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tutorial-entry-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 26px rgba(17, 24, 39, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tutorial-entry-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(249, 115, 22, 0.15);
}

.tutorial-entry-card h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.tutorial-entry-card p {
  margin: 0;
  color: #6b7280;
  line-height: 1.8;
}

.tutorial-page {
  min-height: calc(100vh - 146px);
}

.tutorial-layout {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 24px;
}

.tutorial-menu,
.tutorial-content-placeholder {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}

.tutorial-menu h2 {
  margin: 0 0 14px;
  font-size: 22px;
}

.tutorial-menu ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.tutorial-menu a {
  display: block;
  color: #4b5563;
  padding: 10px 12px;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
}

.tutorial-menu a:hover {
  background: rgba(255, 123, 26, 0.12);
  color: var(--primary-3);
}

.tutorial-content-placeholder h1 {
  margin: 0 0 10px;
}

.tutorial-content-placeholder p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.placeholder-card {
  margin-top: 18px;
  border: 1px dashed #fdba74;
  border-radius: 12px;
  padding: 18px;
  background: #fff7ed;
}

.site-footer {
  border-top: 1px solid rgba(255, 123, 26, 0.12);
  padding: 24px 0;
  color: #6b7280;
  text-align: center;
  background: #fff;
}

.feature-page {
  padding-bottom: 24px;
}

.feature-hero {
  padding-top: 86px;
  padding-bottom: 30px;
}

.feature-hero-card {
  background: linear-gradient(130deg, #fff2e6, #fffaf6 60%, #fff);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 34px 30px;
  box-shadow: 0 18px 44px rgba(249, 115, 22, 0.12);
}

.feature-hero-card h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
}

.feature-hero-card > p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.9;
  max-width: 920px;
}

.feature-kpi-row {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.kpi-box {
  background: #fff;
  border: 1px solid #f7dfcd;
  border-radius: 14px;
  padding: 14px;
}

.kpi-box span {
  display: block;
  font-size: 13px;
  color: #9ca3af;
}

.kpi-box strong {
  margin-top: 8px;
  display: block;
  color: #c2410c;
  font-size: 16px;
}

.module-wrap {
  display: grid;
  gap: 22px;
}

.feature-module {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.04);
}

.module-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
}

.module-head h2 {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 30px);
}

.module-head span {
  font-size: 13px;
  color: #c2410c;
  border: 1px solid #fed7aa;
  background: #fff7ed;
  border-radius: 999px;
  padding: 5px 12px;
  white-space: nowrap;
}

.module-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.module-copy p {
  margin: 0;
  color: #4b5563;
  line-height: 1.9;
}

.module-copy ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: #4b5563;
  line-height: 1.9;
}

.module-visual {
  display: grid;
  gap: 12px;
}

.mini-board,
.staff-card,
.admin-mock,
.quote-card,
.stat-grid > div {
  background: #fff9f4;
  border: 1px solid #f7dfcd;
  border-radius: 14px;
  padding: 14px;
}

.mini-board h3,
.staff-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.mini-board p,
.staff-card p,
.admin-mock p {
  margin: 6px 0 0;
  color: #6b7280;
  font-size: 14px;
}

.mini-board.accent {
  background: linear-gradient(140deg, #fff1e3, #fff8f2);
}

.timeline-visual {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  gap: 8px;
  position: relative;
  padding: 0 4px;
}

.timeline-visual::before {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  height: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: #fbd6b6;
}

.dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fcd5b5;
  position: relative;
  z-index: 1;
  margin: 0 auto;
}

.dot.on {
  background: linear-gradient(120deg, #ff9f43, #ff6a00);
}

.timeline-labels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  font-size: 12px;
  color: #6b7280;
  margin-top: 8px;
}

.visual-note {
  margin: 10px 0 0;
  color: #9ca3af;
  font-size: 13px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stat-grid span {
  color: #9ca3af;
  font-size: 12px;
}

.stat-grid strong {
  margin-top: 8px;
  display: block;
  color: #c2410c;
  font-size: 18px;
}

.quote-card p {
  margin: 0;
  color: #4b5563;
  line-height: 1.8;
}

.quote-card small {
  margin-top: 10px;
  display: block;
  color: #9ca3af;
}

.usage-page,
.usage-subpage {
  min-height: calc(100vh - 146px);
}

.usage-intro {
  text-align: center;
  margin-bottom: 26px;
}

.usage-intro h1 {
  margin: 0;
  font-size: clamp(32px, 4vw, 46px);
}

.usage-intro p {
  margin: 14px auto 0;
  max-width: 860px;
  color: var(--muted);
  line-height: 1.8;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.usage-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(17, 24, 39, 0.05);
}

.usage-card h2 {
  margin: 0 0 10px;
}

.usage-card p {
  margin: 0;
  color: #4b5563;
  line-height: 1.8;
}

.usage-card ul {
  margin: 12px 0 18px;
  padding-left: 18px;
  color: #4b5563;
  line-height: 1.8;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.video-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}

.video-card h3 {
  margin: 0 0 8px;
}

.video-card p {
  margin: 0;
  color: #6b7280;
  line-height: 1.7;
}

.article-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 22px;
}

.article-sidebar {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  position: sticky;
  top: 98px;
  height: fit-content;
}

.article-sidebar h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.article-sidebar a {
  display: block;
  margin-bottom: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  color: #4b5563;
  background: #fff9f4;
  border: 1px solid #f7dfcd;
}

.article-sidebar a.active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(120deg, var(--primary-3), var(--primary-2));
}

.article-content {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}

.article-content h1 {
  margin: 0 0 16px;
  line-height: 1.25;
}

.article-content h3 {
  margin: 18px 0 10px;
  line-height: 1.35;
}

.article-content p {
  margin: 0 0 12px;
  color: #4b5563;
  line-height: 1.9;
}

.article-content ul {
  margin: 10px 0 14px;
  padding-left: 18px;
  color: #4b5563;
  line-height: 1.9;
}

.article-tip {
  margin-top: 14px !important;
  color: #c2410c !important;
}

.article-header h1 {
  margin: 0;
  font-size: clamp(30px, 3.8vw, 42px);
}

.article-header p {
  margin: 12px 0 0;
  color: #6b7280;
  line-height: 1.8;
}

.shot-section {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 123, 26, 0.12);
}

.shot-section h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.35;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.shot-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.shot-media {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 9 / 16;
  border-radius: 12px;
  border: 1px solid #f2e5d7;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 0;
}

.shot-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.pc-shot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.pc-media {
  width: 100%;
  max-width: 980px;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  border: 1px solid #f2e5d7;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 0;
}

.pc-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.shot-card h3 {
  margin: 0;
  line-height: 1.35;
}

.shot-card p {
  margin: 0;
  color: #6b7280;
  line-height: 1.75;
}

.shot-card h3 + p {
  margin-top: -6px;
}

@media (max-width: 980px) {
  .nav-wrap {
    min-height: 68px;
    gap: 12px;
  }

  .brand {
    font-size: 16px;
    min-width: 0;
  }

  .brand span {
    white-space: nowrap;
  }

  .btn-demo {
    height: 36px;
    padding: 0 12px;
    font-size: 13px;
    white-space: nowrap;
  }

  .main-nav {
    display: none;
  }

  .mobile-nav {
    display: flex;
    gap: 12px;
    padding: 12px 2px 14px;
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 123, 26, 0.45) transparent;
  }

  .mobile-nav::-webkit-scrollbar {
    height: 4px;
  }

  .mobile-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 123, 26, 0.45);
    border-radius: 999px;
  }

  .mobile-nav a {
    flex: 0 0 auto;
    padding: 11px 18px;
    border-radius: 999px;
    border: 1px solid #ffd8b5;
    background: #fff7ef;
    color: #9a3412;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
  }

  .mobile-nav a.active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(120deg, var(--primary-3), var(--primary-2));
  }

  .feature-grid,
  .pricing-grid,
  .split-layout,
  .tutorial-layout,
  .tutorial-entry-grid,
  .feature-kpi-row,
  .module-layout,
  .usage-grid,
  .video-grid,
  .article-layout,
  .shot-grid {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  #pricing {
    scroll-margin-top: 150px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(1160px, 94%);
  }

  .brand img {
    width: 110px;
    height: 30px;
  }

  .brand span {
    font-size: 15px;
  }

  .btn-demo {
    padding: 0 10px;
    font-size: 12px;
  }

  .mobile-nav {
    gap: 14px;
  }

  .mobile-nav a {
    padding: 12px 20px;
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}