:root {
  --primary: #0a8fb5;
  --primary-strong: #0d7697;
  --secondary: #22d3ee;
  --cta: #16a34a;
  --bg: #f3f8fc;
  --bg-mesh-a: rgba(34, 211, 238, 0.22);
  --bg-mesh-b: rgba(14, 165, 233, 0.18);
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --card: #ffffff;
  --text: #0f2f3d;
  --muted: #4b6674;
  --line: rgba(18, 117, 150, 0.2);
  --line-strong: rgba(18, 117, 150, 0.34);
  --focus: #0ea5e9;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --shadow-soft: 0 12px 34px rgba(12, 66, 92, 0.12);
  --shadow-lift: 0 16px 40px rgba(12, 66, 92, 0.18);
  --glass-blur: 14px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(460px 260px at 0% 8%, var(--bg-mesh-a), transparent 75%),
    radial-gradient(380px 220px at 98% 4%, var(--bg-mesh-b), transparent 74%),
    linear-gradient(180deg, #f7fcff 0%, var(--bg) 100%);
}

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

button,
input,
select {
  font: inherit;
  color: inherit;
}

.container {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

.header-wrap {
  position: sticky;
  top: 0;
  z-index: 10;
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(var(--glass-blur));
  transition:
    box-shadow var(--duration-normal) var(--ease-standard),
    border-color var(--duration-normal) var(--ease-standard);
}

.header-wrap.is-scrolled {
  border-bottom-color: var(--line-strong);
  box-shadow: 0 8px 22px rgba(10, 72, 103, 0.1);
}

.header {
  padding: 12px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Sora", sans-serif;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.nav-btn {
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0);
  background: rgba(255, 255, 255, 0.42);
  color: inherit;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.nav a:hover,
.nav-btn:hover {
  background: rgba(233, 249, 255, 0.86);
  border-color: rgba(20, 143, 179, 0.2);
  color: var(--text);
}

.nav-btn.active {
  background: rgba(217, 246, 255, 0.9);
  color: var(--text);
  border-color: rgba(20, 143, 179, 0.34);
}

.hero {
  margin-top: 14px;
  display: block;
}

.hero-main {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.72));
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  padding: 14px;
}

.main-content {
  animation: content-fade-in 420ms var(--ease-standard) both;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
}

.search-box {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
}

.search-box input {
  border: none;
  outline: none;
  width: 100%;
  min-height: 42px;
  background: transparent;
}

.select,
.btn {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  padding: 0 12px;
  box-shadow: 0 2px 8px rgba(13, 88, 124, 0.06);
}

.select {
  cursor: pointer;
}

.btn {
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.btn:hover {
  background: rgba(241, 252, 255, 0.95);
  border-color: var(--line-strong);
  box-shadow: 0 8px 20px rgba(13, 88, 124, 0.12);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0ea5c8);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 12px 24px rgba(10, 143, 181, 0.24);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0e81a2, #1091b0);
  border-color: #0e81a2;
}

.hot-keywords {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.hot-keywords > span {
  font-size: 13px;
  color: var(--muted);
}

.hot-empty {
  font-size: 13px;
}

.chip {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.chip:hover,
.chip.active {
  background: rgba(217, 246, 255, 0.92);
  border-color: rgba(18, 117, 150, 0.34);
}

.tips {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.toolbar {
  margin-top: 0;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.toolbar p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 12px;
}

.tools-layout {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.tools-main {
  min-width: 0;
}

.category-sidebar {
  position: sticky;
  top: 74px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.78));
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  padding: 14px;
}

.sidebar-title {
  font-size: 18px;
}

.sidebar-tip {
  margin: 6px 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.category-sidebar-list {
  display: grid;
  gap: 8px;
}

.category-side-btn {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  padding: 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  cursor: pointer;
  text-align: left;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.category-side-btn:hover {
  background: rgba(239, 251, 255, 0.96);
  border-color: rgba(20, 143, 179, 0.3);
}

.category-side-btn.active {
  background: linear-gradient(135deg, rgba(214, 247, 255, 0.94), rgba(225, 252, 255, 0.9));
  border-color: rgba(20, 143, 179, 0.34);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.category-side-btn .label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-side-btn .count {
  border: 1px solid rgba(18, 117, 150, 0.22);
  border-radius: 999px;
  background: rgba(241, 252, 255, 0.9);
  color: #0b6d8a;
  font-size: 12px;
  line-height: 1;
  padding: 4px 8px;
  flex-shrink: 0;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.82));
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 280px;
  opacity: 0;
  transform: translateY(8px);
  will-change: transform, opacity;
  animation: card-enter 380ms var(--ease-standard) both;
  animation-delay: var(--stagger, 0ms);
  transition:
    border-color var(--duration-normal) var(--ease-standard),
    background-color var(--duration-normal) var(--ease-standard),
    transform var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  border-color: rgba(18, 117, 150, 0.34);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(246, 252, 255, 0.88));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.card-skeleton {
  pointer-events: none;
  animation: none;
  opacity: 1;
  transform: none;
}

.skeleton-line {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(226, 240, 245, 0.9), rgba(241, 249, 252, 0.96), rgba(226, 240, 245, 0.9));
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
}

.skeleton-chip {
  width: 40%;
}

.skeleton-title {
  width: 62%;
  height: 18px;
}

.skeleton-btn {
  width: 48%;
  height: 32px;
  margin-top: auto;
}

.card-top,
.card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.category {
  border: 1px solid rgba(21, 128, 110, 0.24);
  background: rgba(236, 253, 245, 0.9);
  color: #0f766e;
  font-size: 12px;
  border-radius: 999px;
  padding: 2px 9px;
}

.card h3 {
  font-size: 18px;
}

.desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  min-height: 42px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  border: 1px solid rgba(18, 117, 150, 0.2);
  background: rgba(236, 251, 255, 0.92);
  color: #0c6f8d;
  border-radius: 999px;
  font-size: 12px;
  padding: 2px 8px;
}

.meta-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 13px;
}

.meta-list strong {
  color: var(--text);
}

.card-foot {
  margin-top: auto;
}

.download-num {
  color: var(--muted);
  font-size: 13px;
}

.actions {
  display: flex;
  gap: 8px;
}

.btn-small {
  min-height: 36px;
  border-radius: var(--radius-sm);
  padding: 0 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.btn-small:hover {
  background: rgba(240, 251, 255, 0.95);
  border-color: rgba(20, 143, 179, 0.3);
}

.btn-small:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-download {
  border-color: rgba(22, 163, 74, 0.34);
  background: linear-gradient(135deg, rgba(236, 253, 243, 0.95), rgba(220, 252, 231, 0.92));
  color: #166534;
}

.btn-download:hover {
  border-color: rgba(22, 163, 74, 0.5);
  background: linear-gradient(135deg, rgba(220, 252, 231, 0.95), rgba(199, 246, 212, 0.92));
}

.btn-open {
  border-color: rgba(14, 165, 233, 0.36);
  background: linear-gradient(135deg, rgba(224, 242, 254, 0.96), rgba(207, 234, 254, 0.92));
  color: #0b5f87;
}

.btn-open:hover {
  border-color: rgba(14, 165, 233, 0.52);
  background: linear-gradient(135deg, rgba(209, 233, 253, 0.96), rgba(188, 224, 252, 0.92));
}

.empty {
  grid-column: 1 / -1;
  border: 1px dashed rgba(18, 117, 150, 0.35);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: 18px 0 34px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 31, 44, 0.36);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--duration-normal) var(--ease-standard),
    visibility var(--duration-normal) var(--ease-standard);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal {
  width: min(680px, 100%);
  max-height: 86vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.95), rgba(248, 253, 255, 0.88));
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lift);
  padding: 20px;
  opacity: 0;
  transform: translateY(14px) scale(0.985);
  transition:
    transform var(--duration-normal) var(--ease-standard),
    opacity var(--duration-normal) var(--ease-standard);
}

.modal-backdrop.open .modal {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.modal p {
  color: var(--muted);
}

.modal-muted {
  color: var(--muted);
}

.modal-error {
  border: 1px solid rgba(220, 38, 38, 0.22);
  background: rgba(254, 242, 242, 0.82);
  color: #b91c1c;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 10px 0;
}

.inline-link {
  color: var(--primary-strong);
  word-break: break-all;
}

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

.feature-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.icon-btn:hover {
  background: rgba(240, 251, 255, 0.95);
  border-color: var(--line-strong);
}

.kpi-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 10px;
}

.kpi-grid > div {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(248, 253, 255, 0.92);
  padding: 12px;
}

.kpi-grid strong {
  display: block;
  font-size: 24px;
  line-height: 1;
}

.kpi-grid span {
  color: var(--muted);
  font-size: 13px;
}

.toast {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 30;
  border: 1px solid rgba(14, 157, 127, 0.5);
  border-radius: 10px;
  background: linear-gradient(135deg, #0d8f82, #0f766e);
  box-shadow: 0 12px 28px rgba(6, 78, 73, 0.26);
  color: #fff;
  padding: 10px 14px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity var(--duration-normal) var(--ease-standard),
    transform var(--duration-normal) var(--ease-standard);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover,
  .btn-small:hover,
  .icon-btn:hover,
  .chip:hover,
  .nav a:hover,
  .nav-btn:hover {
    transform: translateY(-1px);
  }
}

.btn:active,
.btn-small:active,
.icon-btn:active,
.chip:active {
  transform: translateY(0);
}

@media (max-width: 768px) {
  .container {
    width: min(1200px, calc(100% - 24px));
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

  .select,
  .btn {
    width: 100%;
  }
}

@media (max-width: 1024px) {
  .tools-layout {
    grid-template-columns: 1fr;
  }

  .category-sidebar {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@keyframes content-fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  from {
    background-position: 200% 0;
  }
  to {
    background-position: -200% 0;
  }
}