@import url("https://cdn.jsdelivr.net/npm/lxgw-wenkai-webfont@1.7.0/style.css");
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@400;500;600;700;800;900&display=swap");

:root {
  color-scheme: light;
  --font-display: "LXGW WenKai", "KaiTi", "STKaiti", "Noto Serif SC", serif;
  --font-song: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --ink: #242a2e;
  --muted: #687174;
  --line: #d8d2c5;
  --blue: #285c68;
  --blue-dark: #17444d;
  --cyan: #c9855e;
  --surface: #fffdf8;
  --surface-soft: #f5f1e8;
  --paper-deep: #ebe4d6;
  --vermilion: #b64b3d;
  --gold: #b4945a;
  --content-width: 1200px;
  --page-gutter: clamp(20px, 4vw, 56px);
  --content-inset: max(var(--page-gutter), calc((100vw - var(--content-width)) / 2));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--surface-soft);
  overflow-x: hidden;
  font-family: var(--font-song);
}

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

button { font: inherit; }

code,
pre { font-family: var(--font-mono); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  padding-block: 13px;
  padding-inline: var(--content-inset);
  border-bottom: 1px solid rgba(216, 210, 197, .9);
  background: rgba(245, 241, 232, .92);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(45, 43, 36, .12);
}

.brand span { display: grid; }
.brand strong { font-family: var(--font-sans); font-size: 15px; letter-spacing: -.02em; }
.brand small {
  color: var(--vermilion);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-header nav a {
  padding: 8px 10px;
  border-radius: 8px;
  color: #586366;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 650;
}

.site-header nav a:hover { color: var(--blue-dark); background: var(--paper-deep); }

.header-cta {
  padding: 9px 14px;
  border-radius: 3px;
  background: var(--blue-dark);
  color: white;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 750;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 42px;
  align-items: center;
  min-height: 720px;
  padding-block: clamp(56px, 8vw, 110px);
  padding-inline: var(--content-inset);
  color: #f7f2e7;
  background:
    linear-gradient(125deg, #1b444c 0%, #2d6268 54%, #1d4148 100%);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -160px;
  bottom: -280px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  border: 1px solid rgba(239, 218, 169, .22);
  background: transparent;
  filter: none;
}

.eyebrow {
  margin: 0 0 12px;
  color: #e4c889;
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 850;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(42px, 6.2vw, 76px);
  line-height: 1;
  letter-spacing: 0;
  font-family: var(--font-display);
  font-weight: 700;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 720px;
  margin: 22px 0 0;
  color: #e3e9df;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.72;
  font-family: var(--font-song);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 3px;
  font-size: 14px;
  font-family: var(--font-sans);
  font-weight: 780;
}

.button.primary {
  background: #e5c98c;
  color: #263d41;
  box-shadow: 0 14px 34px rgba(13, 37, 41, .22);
}

.button.ghost {
  border: 1px solid rgba(239, 218, 169, .52);
  background: rgba(255, 255, 255, .08);
  color: #f7f2e7;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.hero-meta li {
  padding: 7px 11px;
  border: 1px solid rgba(168, 184, 255, .32);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: #e8eadf;
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 700;
}

.hero-visual {
  position: relative;
  z-index: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 10%;
  border: 1px solid rgba(239, 218, 169, .22);
  border-radius: 2px;
}

.core {
  display: grid;
  place-items: center;
  min-height: 210px;
  border: 1px solid rgba(239, 218, 169, .46);
  border-radius: 2px;
  background: rgba(255, 255, 255, .06);
  color: white;
  font-size: 28px;
  font-weight: 900;
  letter-spacing: .04em;
  font-family: var(--font-sans);
  backdrop-filter: blur(12px);
}

.plugin {
  display: grid;
  place-items: center;
  min-height: 98px;
  border: 1px solid rgba(239, 218, 169, .24);
  border-radius: 2px;
  background: rgba(255, 255, 255, .05);
  color: #e7e9df;
  font-size: 14px;
  font-family: var(--font-sans);
  font-weight: 780;
}

.plugin.openai { grid-row: span 2; }

.section {
  padding-block: clamp(58px, 7vw, 100px);
  padding-inline: var(--content-inset);
}

.section-header {
  max-width: 760px;
  margin-bottom: 38px;
}

.section:not(.hero) .eyebrow { color: var(--vermilion); }

.section-header h2 {
  margin: 0;
  font-size: clamp(29px, 3.7vw, 45px);
  line-height: 1.12;
  letter-spacing: -.035em;
  font-family: var(--font-song);
  font-weight: 800;
}

.section-header p:not(.eyebrow) {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card-grid article,
.language-grid article,
.security-grid article {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  background: var(--surface);
  box-shadow: 0 18px 48px rgba(16, 24, 40, .05);
}

.card-grid article span {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--blue);
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 900;
}

.card-grid h3,
.language-grid h3,
.security-grid h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-family: var(--font-song);
  letter-spacing: -.015em;
}

.card-grid p,
.language-grid p,
.security-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

.quick-start { background: #fffdf8; }

.quick-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 18px;
}

.terminal-card,
.steps-card {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface);
  overflow: hidden;
}

.terminal-card header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid #e7ecf7;
  background: #f6f1e7;
}

.terminal-card header span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c5bba8;
}

.terminal-card header strong {
  margin-left: 8px;
  color: #475467;
  font-size: 12px;
  font-family: var(--font-sans);
}

.terminal-card pre,
.tab-panel pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  background: #26363a;
  color: #e7dfc9;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.68;
}

.terminal-card pre { border-radius: 0 0 17px 17px; }
.terminal-card p {
  margin: 0;
  padding: 13px 16px;
  color: var(--muted);
  font-size: 13px;
}

.steps-card ol {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  counter-reset: quick-step;
  list-style: none;
}

.steps-card li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 13px;
  padding: 17px 18px;
  border-bottom: 1px solid #edf1f8;
  counter-increment: quick-step;
}

.steps-card li:last-child { border-bottom: 0; }

.step-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.steps-card li::before {
  content: counter(quick-step);
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #e8dfc9;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 850;
}

.steps-card strong { display: block; margin-bottom: 4px; font-size: 14px; }
.steps-card span { color: var(--muted); font-size: 13px; line-height: 1.6; }

.package-tabs {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}

.tab-list {
  display: flex;
  gap: 4px;
  padding: 8px;
  border-bottom: 1px solid #e7ecf7;
  background: #f8faff;
}

.tab-list button {
  min-height: 36px;
  padding: 0 14px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: #475467;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 750;
  cursor: pointer;
}

.tab-list button[aria-selected="true"] {
  background: white;
  color: var(--ink);
  box-shadow: 0 4px 14px rgba(16, 24, 40, .08);
}

.tab-panel pre + pre { border-top: 1px solid rgba(255, 255, 255, .08); }

.studio {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  gap: 42px;
  align-items: center;
  color: white;
  background:
    linear-gradient(120deg, #1e454c, #35656a);
}

.studio .eyebrow { color: #e4c889; }
.studio h2 { margin: 0; font-size: clamp(29px, 3.8vw, 46px); line-height: 1.12; letter-spacing: -.035em; font-family: var(--font-song); font-weight: 800; }
.studio p:not(.eyebrow) { margin: 16px 0 0; color: #d8e0fb; font-size: 16px; line-height: 1.72; }

.check-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: #e5ebff;
  font-size: 14px;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #8ce99a;
  font-weight: 900;
}

.command-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 30px;
  padding: 8px 8px 8px 14px;
  border: 1px solid rgba(168, 184, 255, .28);
  border-radius: 12px;
  background: rgba(255, 255, 255, .08);
}

.command-row code {
  overflow-x: auto;
  color: #dce5ff;
  font-size: 13px;
  white-space: nowrap;
}

.command-row button {
  flex-shrink: 0;
  min-height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  background: #eaf0ff;
  color: #1d3ecc;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.studio-panel {
  border: 1px solid rgba(168, 184, 255, .28);
  border-radius: 20px;
  background: rgba(255, 255, 255, .07);
  box-shadow: 0 28px 80px rgba(3, 7, 18, .35);
  backdrop-filter: blur(14px);
}

.studio-panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 17px;
  border-bottom: 1px solid rgba(168, 184, 255, .18);
}

.studio-panel header span { font-size: 14px; font-weight: 850; }
.studio-panel header small { color: #9fb3ff; font-size: 11px; font-weight: 750; }

.studio-providers,
.studio-models {
  display: grid;
  gap: 8px;
  padding: 16px;
}

.studio-providers { grid-template-columns: repeat(2, 1fr); }

.studio-providers span,
.studio-models span {
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid rgba(168, 184, 255, .18);
  border-radius: 10px;
  color: #dce5ff;
  font-size: 12px;
  font-weight: 750;
}

.studio-providers .active {
  border-color: rgba(140, 233, 154, .65);
  background: rgba(140, 233, 154, .13);
  color: white;
}

.studio-models { grid-template-columns: 1fr; }

.architecture { background: #fffdf8; }

.architecture-flow {
  display: grid;
  grid-template-columns: .8fr 1fr .8fr;
  align-items: center;
  gap: 18px;
}

.architecture-flow > article {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  background: var(--surface-soft);
}

.architecture-flow h3 { margin: 0 0 9px; font-size: 17px; }
.architecture-flow p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }

.core-node {
  border-color: #a9baff !important;
  background: linear-gradient(135deg, #eef3ff, #e7fbff) !important;
  box-shadow: 0 20px 54px rgba(53, 99, 233, .12);
}

.plugin-column {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.plugin-column article {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 15px;
  background: white;
  font-size: 13px;
  font-weight: 780;
}

.languages { background: var(--surface-soft); }
.language-grid,
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.language-grid article { position: relative; }

.language-grid span {
  position: absolute;
  right: 18px;
  top: 20px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eaf0ff;
  color: var(--blue-dark);
  font-size: 11px;
  font-weight: 850;
}

.security { background: #fff; }

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 34px;
  padding-inline: var(--content-inset);
  color: white;
  background: #26363a;
}

.site-footer strong { display: block; font-size: 16px; }
.site-footer p { margin: 6px 0 0; color: #b7c1b8; font-size: 13px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer nav a { color: #e7dfc9; font-size: 13px; font-weight: 700; }
.site-footer nav a:hover { color: white; }

@media (max-width: 1120px) {
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-visual { width: 100%; max-width: 620px; }
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quick-grid,
  .studio { grid-template-columns: 1fr; }
  .architecture-flow { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .site-header nav { display: none; }
  .language-grid,
  .security-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .site-header,
  .hero,
  .section,
  .site-footer { padding-inline: 20px; }
  .hero,
  .section,
  .quick-grid,
  .studio,
  .hero-copy,
  .hero-visual,
  .section-header { min-width: 0; max-width: 100%; }
  .hero { overflow: hidden; }
  .card-grid { grid-template-columns: 1fr; }
  .hero h1 { max-width: 100%; font-size: 42px; overflow-wrap: anywhere; }
  .hero-visual { grid-template-columns: 1fr; }
  .plugin.openai { grid-row: auto; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .command-row { align-items: stretch; flex-direction: column; }
  .command-row code { white-space: normal; }
  .terminal-card pre,
  .tab-panel pre { max-width: 100%; }
}