:root {
  --dark: #2f3c48;
  --dark-2: #24303b;
  --dark-3: #404a55;
  --blue: #4096de;
  --blue-2: #5396e9;
  --cyan: #1fcfc3;
  --green: #30c08f;
  --orange: #ffb172;
  --red: #ff5656;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f7f8f8;
  --line: #ebebeb;
  --text: #2e2e2e;
  --muted: rgba(0,0,0,.48);
  --shadow: 0 10px 30px rgba(179,179,179,.48);
  --soft-shadow: 0 16px 50px rgba(47,60,72,.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #fff;
  font-size: 14px;
  line-height: 1.5715;
}
a { color: inherit; text-decoration: none; }
a:hover { color: inherit; }
button { font: inherit; }
.site-shell { min-height: 100vh; background: linear-gradient(180deg,#f8fafc 0,#fff 36%,#f4f6f8 100%); }
.wrap { width: min(1640px, calc(100vw - 32px)); margin: 0 auto; }
.header-wrap {
  position: fixed;
  z-index: 790;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  padding: 0;
  color: #fff;
  background: var(--dark);
  box-shadow: 0 8px 24px rgba(47,60,72,.18);
}
@supports (backdrop-filter: blur(30px)) {
  .header-wrap { background: rgba(65,73,83,.86); backdrop-filter: blur(30px); }
}
.header-box {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1640px;
  height: 64px;
  padding: 0 16px;
  margin: 0 auto;
  font-size: 16px;
}
.logo {
  display: flex;
  align-items: center;
  height: 100%;
  cursor: pointer;
  white-space: nowrap;
}
.logo-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background:
    radial-gradient(circle at 25% 18%, rgba(255,247,208,.95) 0 8%, rgba(255,247,208,0) 28%),
    linear-gradient(145deg,#18345d 0%,#067a82 58%,#d8aa50 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.46), 0 14px 28px rgba(10,86,108,.28);
}
.logo-mark svg { width: 27px; height: 27px; }
.logo-text {
  max-width: 220px;
  margin-left: 14px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.03em;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab-wrap {
  flex: 1;
  align-items: center;
  height: 100%;
  margin: 0 18px;
  overflow: hidden;
  line-height: 64px;
  text-align: center;
}
.tab-list { display: flex; flex-wrap: nowrap; align-items: center; height: 64px; }
.tab-item {
  position: relative;
  height: 64px;
  padding: 0 16px;
  font-size: 16px;
  color: #fff;
  white-space: nowrap;
  cursor: pointer;
  transition: all .3s;
}
.tab-item:hover { color: #fff; background: var(--blue); }
.tab-item.active { font-weight: 700; color: var(--blue); background: transparent; }
.tab-item .tag {
  position: absolute;
  top: 12px;
  right: -8px;
  z-index: 1;
  width: 36px;
  height: 18px;
  font-size: 12px;
  line-height: 18px;
  color: #fff;
  background: red;
  border-radius: 9px;
  transform: scale(.9);
}
.search-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  min-width: 280px;
  padding: 0 20px;
  margin-right: 20px;
  margin-left: auto;
  color: #c8c8c8;
  background: var(--dark-3);
  border: 1px solid #fff;
  border-radius: 26px;
  white-space: nowrap;
}
.search-bar span { opacity: .86; }
.header-action {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 18px;
  border-radius: 99px;
  color: #fff;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  background: linear-gradient(132deg,#1fcfc3,#1f91cf);
  transition: all .3s;
}
.header-action:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(31,145,207,.25); }
.mobile-label,
.mobile-menu-toggle,
.mobile-menu { display: none; }
.placeholder { height: 64px; }
.hero {
  position: relative;
  overflow: hidden;
  min-height: 640px;
  padding: 64px 0 56px;
  color: #fff;
  background:
    radial-gradient(circle at 20% 15%, rgba(31,207,195,.38), transparent 26%),
    radial-gradient(circle at 78% 28%, rgba(64,150,222,.42), transparent 28%),
    linear-gradient(135deg,#202b35 0%,#2f3c48 55%,#1f2933 100%);
}
.hero:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .45;
}
.hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 580px; gap: 52px; align-items: center; }
.hero-copy { padding-top: 20px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px;
  color: #d8f7ff;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  font-size: 13px;
}
.hero h1 { margin: 20px 0 18px; max-width: 880px; font-size: clamp(44px,6vw,76px); line-height: 1.06; letter-spacing: -0.06em; }
.hero h1 em { font-style: normal; color: #8eeeff; }
.hero p { max-width: 760px; margin: 0; color: rgba(255,255,255,.76); font-size: 18px; line-height: 1.85; }
.hero-search {
  display: flex;
  align-items: center;
  max-width: 720px;
  height: 62px;
  padding: 0 8px 0 22px;
  margin-top: 30px;
  color: rgba(255,255,255,.68);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  backdrop-filter: blur(20px);
}
.hero-search strong { margin-right: 12px; color: #fff; }
.hero-search .search-submit { margin-left: auto; height: 46px; padding: 0 22px; border-radius: 99px; color: #fff; background: var(--blue); font-weight: 700; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.hero-tags a { padding: 8px 12px; border-radius: 999px; color: rgba(255,255,255,.82); background: rgba(255,255,255,.1); }
.hero-preview {
  position: relative;
  min-height: 494px;
  padding: 22px;
  color: var(--text);
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 26px 70px rgba(0,0,0,.28);
}
.hero-preview-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.hero-preview-head strong { font-size: 18px; }
.status-dot { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-weight: 700; }
.status-dot:before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.resource-preview-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.preview-card {
  min-height: 132px;
  padding: 16px;
  overflow: hidden;
  border-radius: 16px;
  background: #f7f8f8;
  border: 1px solid #ebebeb;
  transition: all .3s;
}
.preview-card:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(47,60,72,.12); }
.preview-cover { height: 58px; margin-bottom: 12px; border-radius: 10px; background: linear-gradient(132deg,#dff8ff,#e9f1ff 56%,#fff0df); }
.preview-card:nth-child(2) .preview-cover { background: linear-gradient(132deg,#ffe9d1,#e3f4ff 56%,#e6fff6); }
.preview-card:nth-child(3) .preview-cover { background: linear-gradient(132deg,#eff0ff,#dbfff5 56%,#fff4e4); }
.preview-card:nth-child(4) .preview-cover { background: linear-gradient(132deg,#e9f5ff,#f1e8ff 56%,#e6fff9); }
.preview-card strong { display: block; margin-bottom: 5px; }
.preview-card span { color: var(--muted); }
.mega-section { position: relative; margin-top: -44px; z-index: 2; }
.mega-grid {
  display: flex;
  min-height: 520px;
  padding: 40px 100px 20px;
  background: #fff;
  box-shadow: var(--shadow);
  border-radius: 0 0 20px 20px;
}
.mega-left { width: 260px; height: 100%; }
.record-item { width: 100%; height: 40px; padding: 0 12px; margin-bottom: 20px; cursor: pointer; background: #f7f8f8; border: 1px solid #ebebeb; border-radius: 10px; display: flex; align-items: center; }
.record-item span:first-child { margin-right: 8px; color: #404040; }
.new-resource-card { width: 100%; min-height: 390px; padding: 12px; background: #f7f8f8; border: 1px solid #ebebeb; border-radius: 10px; }
.new-resource-card .title { height: 20px; margin-bottom: 16px; font-weight: 600; color: #404040; }
.small-resource { display: flex; align-items: center; height: 58px; margin-bottom: 12px; overflow: hidden; cursor: pointer; }
.small-cover { width: 102px; height: 58px; flex: 0 0 auto; overflow: hidden; border-radius: 6px; background: linear-gradient(132deg,#1fcfc3,#1f91cf); opacity: .9; }
.small-resource:nth-child(3) .small-cover { background: linear-gradient(132deg,#ffb172,#f26d50); }
.small-resource:nth-child(4) .small-cover { background: linear-gradient(132deg,#8b5cf6,#4096de); }
.small-resource span { max-width: calc(100% - 114px); margin-left: 12px; font-size: 14px; font-weight: 500; color: #000; opacity: .45; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.small-resource:hover span { color: #2f3c48; opacity: 1; transition: all .3s; }
.mega-right { display: grid; grid-template-columns: repeat(8,1fr); gap: 32px; width: calc(100% - 260px); margin-left: 80px; }
.category-name { height: 26px; margin-bottom: 20px; font-size: 18px; font-weight: 600; line-height: 26px; color: #404040; text-align: left; }
.category-list { width: 100%; height: 414px; overflow-y: auto; }
.category-list a { display: flex; align-items: center; height: 20px; margin-bottom: 20px; font-size: 14px; font-weight: 500; line-height: 20px; color: rgba(0,0,0,.4); text-align: left; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.category-list a:hover { color: #2f3c48; }
.hot { width: 30px; height: 16px; margin-left: 4px; font-size: 10px; color: #fff; background: var(--red); border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; }
.new { width: 34px; height: 16px; margin-left: 4px; font-size: 10px; color: #fff; background: var(--blue); border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; }
.section { padding: 76px 0; }
.section.alt { background: var(--bg); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
.kicker { margin: 0 0 8px; color: var(--blue); font-weight: 700; }
h2 { margin: 0; font-size: clamp(30px,4vw,46px); line-height: 1.16; letter-spacing: -0.04em; color: #1f2830; }
.section-desc { max-width: 680px; color: #666; font-size: 16px; line-height: 1.8; }
.resource-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.resource-card {
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 18px;
  background: #fff;
  border: 1px solid #ebebeb;
  border-radius: 16px;
  box-shadow: 0 10px 28px rgba(47,60,72,.06);
  transition: all .3s;
}
.resource-card:hover { transform: translateY(-4px); box-shadow: 0 20px 42px rgba(47,60,72,.13); }
.resource-art { height: 112px; margin: -2px -2px 18px; border-radius: 14px; background: linear-gradient(132deg,#e7fbff,#eef4ff 50%,#fff2e8); }
.resource-card:nth-child(2) .resource-art { background: linear-gradient(132deg,#fff1d8,#e8f1ff 50%,#e5fff7); }
.resource-card:nth-child(3) .resource-art { background: linear-gradient(132deg,#efeaff,#e5fbff 50%,#fff5e6); }
.resource-card:nth-child(4) .resource-art { background: linear-gradient(132deg,#eafff9,#edf0ff 50%,#fff0ef); }
.resource-card strong { display: block; margin-bottom: 9px; font-size: 18px; color: #202b35; }
.resource-card p { margin: 0 0 16px; color: #666; line-height: 1.7; }
.card-meta { display: flex; align-items: center; justify-content: space-between; color: rgba(0,0,0,.42); }
.card-link { color: var(--blue); font-weight: 700; }
.tool-matrix { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; }
.tool-card { min-height: 174px; padding: 22px; background: #fff; border: 1px solid #ebebeb; border-radius: 16px; transition: all .3s; }
.tool-card:hover { background: #f7f8f8; transform: translateY(-2px); }
.tool-icon { width: 46px; height: 46px; margin-bottom: 18px; display: grid; place-items: center; color: #fff; border-radius: 12px; background: #2f3c48; }
.tool-card h3 { margin: 0 0 8px; font-size: 19px; }
.tool-card p { margin: 0; color: #666; line-height: 1.7; }
.case-wall { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 18px; }
.case-card { min-height: 240px; padding: 24px; border-radius: 18px; color: #fff; background: linear-gradient(135deg,rgba(47,60,72,.28),rgba(47,60,72,.92)), linear-gradient(132deg,#cfe9ff,#f2e8ff 56%,#e6fff9); display: flex; flex-direction: column; justify-content: flex-end; }
.case-card:nth-child(2) { background: linear-gradient(135deg,rgba(47,60,72,.24),rgba(47,60,72,.9)), linear-gradient(132deg,#ffe2c7,#e5f0ff 56%,#e4fff4); }
.case-card:nth-child(3) { background: linear-gradient(135deg,rgba(47,60,72,.24),rgba(47,60,72,.9)), linear-gradient(132deg,#e8eaff,#dcfff7 56%,#fff1dd); }
.case-card strong { font-size: 24px; margin-bottom: 8px; }
.case-card span { color: rgba(255,255,255,.74); }
.workflow { display: grid; grid-template-columns: 360px 1fr; gap: 22px; }
.workflow-side { padding: 22px; border-radius: 18px; color: #fff; background: var(--dark); }
.workflow-side h3 { margin: 0 0 18px; font-size: 22px; }
.workflow-step { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.workflow-step b { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); }
.workflow-main { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.workflow-box { padding: 20px; border-radius: 16px; background: #fff; border: 1px solid #ebebeb; }
.workflow-box strong { display: block; margin-bottom: 8px; font-size: 18px; }
.workflow-box p { margin: 0; color: #666; line-height: 1.7; }
.page-hero { padding: 112px 0 48px; color: #fff; background: linear-gradient(135deg,#202b35,#2f3c48); }
.page-hero h1 { margin: 14px 0 12px; max-width: 920px; font-size: clamp(36px,5vw,58px); line-height: 1.08; letter-spacing: -0.05em; }
.page-hero p { max-width: 760px; margin: 0; color: rgba(255,255,255,.72); font-size: 17px; line-height: 1.8; }
.content-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; padding: 54px 0 80px; }
.content-card { padding: 24px; background: #fff; border: 1px solid #ebebeb; border-radius: 16px; box-shadow: 0 10px 28px rgba(47,60,72,.06); }
.content-card h2,.content-card h3 { margin: 0 0 12px; color: #202b35; }
.content-card p,.content-card li { color: #666; line-height: 1.75; }
.content-card ul,.content-card ol { margin: 12px 0 0; padding-left: 20px; }
.resource-table { grid-column: 1 / -1; padding: 0; overflow: hidden; }
.resource-table table { width: 100%; border-collapse: collapse; }
.resource-table th,.resource-table td { padding: 16px 18px; border-bottom: 1px solid #ebebeb; text-align: left; }
.resource-table th { color: #404040; background: #f7f8f8; }
.resource-table td { color: #666; }
.site-footer { padding: 44px 0; color: rgba(255,255,255,.68); background: #202b35; }
.footer-grid { display: grid; grid-template-columns: 1.2fr repeat(3,.6fr); gap: 26px; }
.footer-grid strong { display: block; margin-bottom: 12px; color: #fff; }
.footer-grid a,.footer-grid span { display: block; margin: 8px 0; }
.error-page { min-height: 100vh; display: grid; place-items: center; padding: 36px; background: #f4f6f8; }
.error-card { max-width: 620px; padding: 42px; border-radius: 22px; text-align: center; background: #fff; box-shadow: var(--soft-shadow); }
.error-card h1 { margin: 14px 0; font-size: 72px; }
@media (max-width: 1440px) {
  .mega-grid { padding: 36px 40px 20px; }
  .mega-right { gap: 14px; margin-left: 40px; }
  .search-bar { min-width: 230px; }
}
@media (max-width: 1100px) {
  .hero-inner,.workflow { grid-template-columns: 1fr; }
  .mega-grid { display: block; }
  .mega-left { width: 100%; }
  .mega-right { width: 100%; margin: 24px 0 0; grid-template-columns: repeat(4,1fr); }
  .resource-grid,.tool-matrix { grid-template-columns: repeat(2,1fr); }
  .case-wall,.content-grid { grid-template-columns: 1fr 1fr; }
  .resource-table { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
  .tab-wrap,.search-bar,.header-action { display: none; }
  .mobile-label { display: block; }
  .logo-text { font-size: 19px; }
  .hero { padding-top: 48px; }
  .hero h1 { font-size: 42px; }
  .hero-search { height: auto; align-items: flex-start; gap: 12px; padding: 16px; border-radius: 18px; flex-direction: column; }
  .hero-search .search-submit { margin-left: 0; }
  .resource-preview-grid,.mega-right,.resource-grid,.tool-matrix,.case-wall,.workflow-main,.content-grid,.footer-grid { grid-template-columns: 1fr; }
  .mega-grid { min-height: auto; padding: 24px; }
  .category-list { height: auto; }
}