:root {
  --ink: #17222b;
  --muted: #66737a;
  --line: #dce2df;
  --paper: #f6f7f4;
  --white: #fff;
  --green: #075c4c;
  --lime: #d4e753;
  --orange: #f46c32;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Manrope,"Microsoft YaHei",sans-serif;
  font-size: 14px;
}
button,input {
  font: inherit;
}
button {
  cursor: pointer;
}
.site-header {
  height: 78px;
  padding: 0 clamp(24px,5vw,84px);
  background: var(--white);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  justify-content: space-between;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
}
.brand em {
  display: block;
  color: var(--green);
  font-style: normal;
  font-size: 8px;
  letter-spacing: .17em;
  margin-top: 2px;
}
.brand-mark {
  width: 31px;
  height: 31px;
  display: flex;
  align-items: center;
  gap: 3px;
  transform: skew(-18deg);
}
.brand-mark i {
  display: block;
  width: 7px;
  height: 26px;
  background: var(--green);
}
.brand-mark i:nth-child(2) {
  background: var(--lime);
  height: 20px;
}
.brand-mark i:nth-child(3) {
  background: var(--ink);
  height: 14px;
}
nav {
  display: flex;
  gap: 32px;
  height: 100%;
}
nav a {
  align-content: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
}
nav a.active, nav a:hover {
  color: var(--green);
  border-color: var(--green);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.language {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}
.language span {
  color: var(--green);
  margin-left: 3px;
}
.login-button {
  border: 0;
  color: #fff;
  padding: 12px 16px;
  background: var(--green);
  font-size: 12px;
  font-weight: 700;
}
.login-button span {
  color: var(--lime);
  margin-left: 12px;
}
.hero {
  min-height: 300px;
  padding: 78px clamp(24px,10vw,170px) 60px;
  background: var(--white);
  display: flex;
  justify-content: space-between;
  gap: 80px;
  position: relative;
  overflow: hidden;
}
.hero:after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border: 1px solid #d9e8e4;
  border-radius: 50%;
  right: -175px;
  top: -275px;
  box-shadow: 0 0 0 55px #f5f8f6,0 0 0 56px #e5edeb;
}
.eyebrow {
  color: var(--orange);
  margin: 0 0 12px;
  text-transform: uppercase;
  font: 500 10px "DM Mono",monospace;
  letter-spacing: .12em;
}
.eyebrow span {
  display: inline-block;
  width: 30px;
  height: 1px;
  background: currentColor;
  margin: 0 8px 3px;
}
h1,h2,h3,p {
  margin-top: 0;
}
h1 {
  font-size: clamp(38px,4vw,58px);
  line-height: 1.05;
  letter-spacing: -.06em;
  margin-bottom: 18px;
}
.hero-copy {
  color: var(--muted);
  line-height: 1.8;
}
.hero-panel {
  width: 218px;
  z-index: 1;
  padding: 20px 0 0 25px;
  border-left: 1px solid var(--green);
  align-self: center;
}
.hero-panel p {
  color: var(--green);
  font-size: 12px;
  margin-bottom: 2px;
}
.hero-panel strong {
  display: block;
  font-size: 42px;
  letter-spacing: -.08em;
  line-height: 1;
}
.hero-panel span {
  color: var(--muted);
  font-size: 11px;
}
.hero-panel button {
  background: none;
  border: 0;
  border-bottom: 1px solid var(--ink);
  padding: 18px 0 4px;
  font-size: 12px;
  font-weight: 700;
}
.hero-panel b {
  color: var(--orange);
  font-size: 18px;
  padding-left: 12px;
}
.utility-bar {
  min-height: 60px;
  padding: 0 clamp(24px,5vw,84px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #eef2ef;
}
.utility-bar p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}
.utility-bar i {
  border-left: 1px solid #b9c4c0;
  margin: 0 10px;
}
.pulse {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
  margin-right: 7px;
}
.search-toggle {
  border: 0;
  padding: 7px 0 7px 20px;
  color: var(--muted);
  background: transparent;
  font-size: 11px;
}
.search-toggle:first-letter {
  color: var(--green);
  font-size: 22px;
}
kbd {
  margin-left: 12px;
  padding: 2px 5px;
  border: 1px solid #cbd2ce;
  border-radius: 2px;
  color: #8f9a96;
  font: 9px "DM Mono";
}
.library {
  padding: 70px clamp(24px,5vw,84px) 82px;
  max-width: 1780px;
  margin: auto;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  padding-bottom: 27px;
  border-bottom: 1px solid var(--ink);
}
h2 {
  font-size: 26px;
  letter-spacing: -.04em;
  margin: 0;
}
.section-heading > p {
  width: 350px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  margin: 0;
}
.library-grid {
  display: grid;
  grid-template-columns: repeat(6,minmax(0,1fr));
  gap: 12px;
  margin-top: 14px;
  align-items: start;
}
.region-card {
  padding: 17px 14px 15px;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform .2s,box-shadow .2s;
}
.region-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(23,34,43,.08);
}
.region-card.featured {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}
.region-card header,.region-card footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 4px;
}
.region-index {
  font: 500 10px "DM Mono";
  color: var(--orange);
}
.status {
  color: var(--muted);
  font-size: 9px;
}
.featured .status {
  color: #c8ddda;
}
.region-intro {
  padding: 27px 0 15px;
  border-bottom: 1px solid var(--line);
}
.featured .region-intro {
  border-color: rgba(255,255,255,.25);
}
.region-intro .eyebrow {
  margin-bottom: 7px;
  font-size: 8px;
}
h3 {
  font-size: 17px;
  line-height: 1.15;
  letter-spacing: -.04em;
  margin-bottom: 8px;
}
.region-intro > p:last-child {
  color: var(--muted);
  margin: 0;
  font-size: 10px;
  line-height: 1.55;
}
.featured .region-intro > p:last-child {
  color: #d2e4df;
}
.tree {
  list-style: none;
  margin: 12px 0;
  padding: 0;
}
.tree li {
  list-style: none;
}
.tree-toggle {
  width: 100%;
  display: grid;
  grid-template-columns: 19px minmax(0,1fr) auto;
  text-align: left;
  padding: 6px 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-weight: 700;
  font-size: 10px;
  line-height: 1.35;
}
.tree-toggle span {
  color: var(--orange);
  font: 9px "DM Mono";
  padding-top: 1px;
}
.tree-toggle b {
  color: #a1aaa7;
  font: 9px "DM Mono";
  font-weight: 400;
}
.featured .tree-toggle b {
  color: #c7ddda;
}
.tree ul {
  list-style: none;
  margin: 0 0 4px 19px;
  padding: 0;
  border-left: 1px solid #dce2df;
}
.featured .tree ul {
  border-color: rgba(255,255,255,.25);
}
.tree a {
  display: block;
  padding: 3px 0 3px 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 9px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.featured .tree a {
  color: #dbebe7;
}
.tree a:before {
  content: "·";
  color: var(--orange);
  margin-right: 4px;
}
.tree a:hover {
  color: var(--orange);
}
.region-card footer {
  padding-top: 11px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}
.featured footer {
  border-color: rgba(255,255,255,.25);
  color: #cce1dc;
}
.region-card footer button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--green);
  font-size: 9px;
  font-weight: 700;
  white-space: nowrap;
}
.featured footer button {
  color: var(--lime);
}
.notice {
  max-width: 1612px;
  margin: 0 auto 58px;
  padding: 20px 24px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 16px;
  align-items: center;
}
.notice > span {
  color: var(--orange);
  font: 11px "DM Mono";
}
.notice strong {
  font-size: 12px;
}
.notice p {
  color: var(--muted);
  margin: 5px 0 0;
  font-size: 11px;
  line-height: 1.6;
}
.notice a {
  color: var(--green);
  text-decoration: none;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}
footer {
  background: var(--ink);
  color: #aeb8b6;
  min-height: 75px;
  padding: 0 clamp(24px,5vw,84px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font: 10px "DM Mono";
  letter-spacing: .04em;
}
.user-status {
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
}
.user-status b {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 5px;
  border-radius: 50%;
  background: var(--lime);
}
.sign-out {
  padding: 0 0 2px;
  color: var(--muted);
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-size: 11px;
}
.hero-panel button {
  display: none;
}
@media (max-width:1100px) {
  nav {
    display: none;
  }
  .hero {
    padding: 55px 8vw;
  }
  .library-grid {
    grid-template-columns: repeat(3,minmax(0,1fr));
  }
  .notice {
    margin-left: 24px;
    margin-right: 24px;
  }
}
@media (max-width:600px) {
  .site-header {
    height: 65px;
    padding: 0 18px;
  }
  .language {
    display: none;
  }
  .hero {
    min-height: 400px;
    display: block;
    padding: 55px 24px 32px;
  }
  .hero-panel {
    margin-top: 42px;
    padding-top: 0;
    width: auto;
  }
  .utility-bar {
    padding: 13px 24px;
  }
  .utility-bar p {
    display: none;
  }
  .search-toggle {
    padding-left: 0;
  }
  .search-toggle span {
    margin-left: 4px;
  }
  .library {
    padding: 45px 18px;
  }
  .section-heading {
    display: block;
  }
  .section-heading > p {
    width: auto;
    margin-top: 15px;
  }
  .library-grid {
    grid-template-columns: 1fr;
  }
  .notice {
    margin: 0 18px 40px;
    padding: 18px 0;
    grid-template-columns: 25px 1fr;
  }
  .notice a {
    grid-column: 2;
  }
  footer {
    padding: 20px 18px;
    min-height: 80px;
    display: block;
    line-height: 2;
  }
}