:root {
  --bg: #f4f7ff;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #1a2642;
  --muted: #5d6d91;
  --line: #d9e4f6;
  --primary: #0f6dff;
  --primary-soft: #e9f1ff;
  --accent: #ff7a1a;
  --shadow: 0 16px 36px rgba(22, 44, 98, 0.12);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --max-width: 1140px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Alibaba PuHuiTi", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

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

.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.ambient::before,
.ambient::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(4px);
  animation: floatCloud 12s ease-in-out infinite;
}

.ambient::before {
  width: 420px;
  height: 420px;
  left: -120px;
  top: -140px;
  background: radial-gradient(circle, #b8d8ff 0%, rgba(184, 216, 255, 0) 72%);
}

.ambient::after {
  width: 520px;
  height: 520px;
  right: -180px;
  bottom: -180px;
  background: radial-gradient(circle, #ffd8b6 0%, rgba(255, 216, 182, 0) 72%);
  animation-delay: -4s;
}

@keyframes floatCloud {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-16px);
  }
}

.container {
  width: min(var(--max-width), calc(100% - 30px));
  margin: 0 auto;
}

.site-header {
  padding: 20px 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #56a8ff);
  box-shadow: 0 10px 24px rgba(15, 109, 255, 0.3);
}

.date-pill {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.7);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(236, 245, 255, 0.92));
  border: 1px solid #dbe8fb;
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: var(--shadow);
}

.hero-content h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.16;
  text-wrap: balance;
}

.hero-content h1 strong {
  color: var(--primary);
}

.hero-content p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stat-card {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-md);
  min-width: 138px;
  padding: 11px 13px;
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.search-card {
  background: var(--surface-strong);
  border: 1px solid #e1e9f6;
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: 0 12px 26px rgba(20, 40, 96, 0.09);
}

.search-card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.maintain-wrap {
  position: fixed;
  left: 50%;
  top: clamp(300px, 46vh, 520px);
  transform: translate(-50%, -80px);
  width: min(var(--max-width), calc(100% - 30px));
  z-index: 60;
  pointer-events: none;
}

.maintain-card {
  position: relative;
  width: 100%;
  border-radius: 14px;
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 14px 34px rgba(15, 22, 43, 0.3);
  pointer-events: none;
}

.maintain-card::before {
  content: "";
  position: absolute;
  inset: -80%;
  background: conic-gradient(from 0deg, #4cc9f0 0%, #ff6b6b 35%, #4ade80 68%, #4cc9f0 100%);
  animation: maintainBorderFlow 2.2s linear infinite;
  filter: saturate(1.12);
  z-index: 0;
}

.maintain-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 13px;
  background: linear-gradient(180deg, #0f172a 0%, #0b1220 100%);
  z-index: 1;
}

.maintain-stars {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  pointer-events: none;
  z-index: 2;
}

.maintain-star {
  position: absolute;
  font-size: 14px;
  line-height: 1;
  color: #e8fbff;
  text-shadow: 0 0 8px #4cc9f0, 0 0 14px #4ade80;
  transform: translate(-50%, -50%);
  animation: maintainOrbit 3.6s linear infinite, maintainTwinkle 1.2s ease-in-out infinite;
}

.maintain-star.s2 {
  animation-delay: -1.8s, 0.6s;
}

.maintain-star.s3 {
  animation-delay: -0.5s, 0.2s;
  font-size: 12px;
}

.maintain-star.s4 {
  animation-delay: -1s, 0.9s;
  font-size: 13px;
}

.maintain-star.s5 {
  animation-delay: -1.5s, 0.3s;
  font-size: 12px;
}

.maintain-star.s6 {
  animation-delay: -2.1s, 1s;
  font-size: 13px;
}

.maintain-star.s7 {
  animation-delay: -2.7s, 0.45s;
  font-size: 12px;
}

.maintain-body {
  position: relative;
  z-index: 3;
  min-height: 152px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 4px;
}

.maintain-line {
  margin: 0;
  color: #eaf4ff;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
  animation: maintainTextBob 2.1s ease-in-out infinite, maintainTextGlow 3s linear infinite;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.maintain-line + .maintain-line {
  margin-top: 0;
}

.maintain-line-main {
  color: #f4fbff;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.4px;
  animation-delay: -0.35s, -0.8s;
}

@keyframes maintainBorderFlow {
  to {
    transform: rotate(360deg);
  }
}

@keyframes maintainOrbit {
  0% { left: 14px; top: 1px; }
  12.5% { left: calc(100% - 14px); top: 1px; }
  25% { left: calc(100% - 1px); top: 14px; }
  37.5% { left: calc(100% - 1px); top: calc(100% - 14px); }
  50% { left: calc(100% - 14px); top: calc(100% - 1px); }
  62.5% { left: 14px; top: calc(100% - 1px); }
  75% { left: 1px; top: calc(100% - 14px); }
  87.5% { left: 1px; top: 14px; }
  100% { left: 14px; top: 1px; }
}

@keyframes maintainTwinkle {
  0%,
  100% {
    opacity: 0.35;
    transform: translate(-50%, -50%) scale(0.85);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.25);
  }
}

@keyframes maintainTextBob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

@keyframes maintainTextGlow {
  0% {
    color: #f0f8ff;
    text-shadow: 0 0 3px rgba(76, 201, 240, 0.25);
  }
  33% {
    color: #d9eeff;
    text-shadow: 0 0 3px rgba(59, 130, 246, 0.22);
  }
  66% {
    color: #e7fff0;
    text-shadow: 0 0 3px rgba(74, 222, 128, 0.24);
  }
  100% {
    color: #f0f8ff;
    text-shadow: 0 0 3px rgba(255, 107, 107, 0.2);
  }
}

.engine-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.engine-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  font-size: 13px;
  padding: 7px 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.engine-btn.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: rgba(15, 109, 255, 0.35);
  font-weight: 600;
}

.search-row {
  display: flex;
  gap: 10px;
}

.search-row input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 15px;
  padding: 12px 13px;
  outline: none;
}

.search-row input:focus {
  border-color: rgba(15, 109, 255, 0.6);
  box-shadow: 0 0 0 4px rgba(15, 109, 255, 0.14);
}

.search-row button {
  border: 0;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 12px;
  padding: 0 18px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--primary), #2e8cff);
}

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

.keyword-btn {
  border: 1px dashed #bad0f6;
  color: #315fb0;
  background: #f4f8ff;
  border-radius: 999px;
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}

.panel {
  margin-top: 16px;
  background: var(--surface);
  border: 1px solid #dbe6f5;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(30, 52, 109, 0.08);
  padding: 20px;
  backdrop-filter: blur(6px);
}

.panel-head {
  margin-bottom: 14px;
}

.panel-head h3 {
  margin: 0;
  font-size: 22px;
}

.panel-head p {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.nav-card {
  background: #fff;
  border: 1px solid #dde6f5;
  border-radius: 14px;
  min-height: 116px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.nav-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 109, 255, 0.35);
  box-shadow: 0 10px 22px rgba(24, 62, 148, 0.15);
}

.nav-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  box-shadow: 0 6px 16px rgba(22, 44, 98, 0.2);
}

.nav-icon-baidu {
  background: linear-gradient(135deg, #2f7dff, #2165e8);
}

.nav-icon-qq {
  background: linear-gradient(135deg, #28b6ff, #0c82ff);
}

.nav-icon-weibo {
  background: linear-gradient(135deg, #ff5b5b, #ff9f1a);
}

.nav-icon-sohu {
  background: linear-gradient(135deg, #f54b5e, #d5344b);
}

.nav-icon-iqiyi {
  background: linear-gradient(135deg, #42c300, #169e2f);
}

.nav-icon-youku {
  background: linear-gradient(135deg, #17a7ff, #1565ff);
}

.nav-icon-jd {
  background: linear-gradient(135deg, #ff4a4a, #d61f39);
}

.nav-icon-taobao {
  background: linear-gradient(135deg, #ff9a22, #ff6d00);
}

.nav-icon-tmall {
  background: linear-gradient(135deg, #191919, #454545);
}

.nav-icon-meituan {
  background: linear-gradient(135deg, #ffe063, #f4b300);
  color: #2f2f2f;
}

.nav-icon-dianping {
  background: linear-gradient(135deg, #ffb347, #ff8a00);
}

.nav-icon-ctrip {
  background: linear-gradient(135deg, #5ea8ff, #2f7ae8);
}

.nav-icon-eastmoney {
  background: linear-gradient(135deg, #ff8d2e, #ff5a00);
}

.nav-icon-autohome {
  background: linear-gradient(135deg, #4f9eff, #2464e8);
}

.nav-icon-xinhuanet {
  background: linear-gradient(135deg, #3a7cff, #2154c9);
}

.nav-icon-ifeng {
  background: linear-gradient(135deg, #ff8a5a, #f05b2a);
}

.nav-icon-qunar {
  background: linear-gradient(135deg, #13b6ba, #0f8d99);
}

.nav-icon-58 {
  background: linear-gradient(135deg, #5ea6ff, #4f86ff);
  font-size: 14px;
}

.nav-card .name {
  font-size: 15px;
  font-weight: 700;
  color: #1f2f51;
}

.nav-card .desc {
  margin-top: auto;
  font-size: 12px;
  color: #6f7f9f;
}

.news-tools {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.news-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.news-tab,
.refresh-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  font-size: 13px;
  padding: 8px 12px;
  cursor: pointer;
}

.news-tab.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: rgba(15, 109, 255, 0.35);
  font-weight: 600;
}

.refresh-btn {
  color: #b65c0b;
  background: #fff5e9;
  border-color: #ffd4a8;
}

.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.news-list li {
  background: #fff;
  border: 1px solid #dbe5f5;
  border-radius: 14px;
  padding: 14px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.news-list li:hover {
  border-color: rgba(15, 109, 255, 0.35);
  box-shadow: 0 10px 20px rgba(25, 63, 145, 0.14);
}

.news-title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.45;
  color: #22345b;
}

.news-summary {
  margin: 0 0 10px;
  color: #617194;
  font-size: 13px;
  line-height: 1.65;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: #7d89a3;
}

.news-source {
  color: var(--accent);
  font-weight: 600;
}

.site-footer {
  padding: 14px 0 22px;
  font-size: 13px;
  color: #68779a;
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

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

@media (max-width: 1060px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .nav-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .container {
    width: min(var(--max-width), calc(100% - 16px));
  }

  .site-header {
    padding: 12px 0 8px;
    align-items: center;
  }

  .brand {
    font-size: 19px;
    gap: 8px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .date-pill {
    font-size: 12px;
    padding: 6px 10px;
    white-space: nowrap;
  }

  .hero {
    padding: 16px;
    border-radius: 16px;
    gap: 14px;
  }

  .hero-content h1 {
    font-size: 30px;
    margin-bottom: 8px;
    line-height: 1.24;
  }

  .hero-content p {
    font-size: 13px;
    line-height: 1.58;
    margin-bottom: 12px;
  }

  .stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .stat-card {
    min-width: 0;
    padding: 8px 8px;
    border-radius: 10px;
  }

  .stats .stat-card:last-child {
    grid-column: auto;
  }

  .stat-value {
    font-size: 16px;
  }

  .stat-label {
    font-size: 11px;
    line-height: 1.25;
  }

  .search-card {
    padding: 14px;
    border-radius: 14px;
  }

  .search-card h2 {
    font-size: 18px;
    margin-bottom: 8px;
  }

  .maintain-wrap {
    top: clamp(250px, 42vh, 460px);
    width: min(var(--max-width), calc(100% - 48px));
  }

  .maintain-body {
    min-height: 136px;
    padding: 20px 14px;
  }

  .maintain-line-main {
    font-size: 18px;
  }

  .maintain-line {
    font-size: 16px;
  }

  .engine-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 8px;
  }

  .engine-btn {
    text-align: center;
    padding: 7px 0;
    min-height: 34px;
  }

  .search-row input {
    font-size: 14px;
    padding: 11px 12px;
  }

  .search-row {
    flex-direction: column;
  }

  .search-row button {
    height: 42px;
  }

  .hot-keywords {
    gap: 6px;
  }

  .keyword-btn {
    padding: 5px 9px;
    font-size: 12px;
  }

  .nav-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .nav-card {
    min-height: 88px;
    padding: 10px 8px;
    align-items: center;
    text-align: center;
    gap: 6px;
  }

  .nav-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    font-size: 14px;
  }

  .nav-icon-58 {
    font-size: 12px;
  }

  .nav-card .name {
    font-size: 13px;
  }

  .nav-card .desc {
    display: none;
  }

  .news-tools {
    display: block;
  }

  .news-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 8px;
  }

  .news-tab,
  .refresh-btn {
    width: 100%;
    text-align: center;
    padding: 8px 0;
  }

  .news-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .news-list li {
    padding: 12px;
  }

  .news-title {
    font-size: 15px;
    margin-bottom: 6px;
  }

  .news-summary {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .news-meta {
    font-size: 11px;
  }

  .panel {
    margin-top: 12px;
    padding: 14px;
    border-radius: 14px;
  }

  .panel-head h3 {
    font-size: 19px;
  }

  .panel-head p {
    font-size: 13px;
  }

  .site-footer {
    padding: 10px 0 18px;
    font-size: 12px;
  }
}

@media (max-width: 420px) {
  .hero-content h1 {
    font-size: 27px;
  }

  .date-pill {
    font-size: 11px;
    padding: 5px 8px;
  }

  .news-tab,
  .refresh-btn {
    font-size: 12px;
  }

  .maintain-wrap {
    top: clamp(230px, 40vh, 420px);
    width: calc(100% - 40px);
  }
}