:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-muted: #fafbfc;
  --ink: #182132;
  --ink-soft: #5f6b7c;
  --ink-faint: #8e98a8;
  --line: #e5e8ed;
  --line-strong: #d6dbe4;
  --blue: #2368dc;
  --blue-soft: #eaf1ff;
  --mint: #198f78;
  --mint-soft: #e8f7f2;
  --orange: #dd7045;
  --orange-soft: #fff0e9;
  --purple: #7658d4;
  --purple-soft: #f0edff;
  --shadow: 0 12px 30px rgba(31, 45, 68, 0.06);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  font-family: "Manrope", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html { min-width: 320px; scroll-behavior: smooth; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  overflow-x: hidden;
}

button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, dialog:focus-visible {
  outline: 3px solid rgba(35, 104, 220, 0.34);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}
.skip-link:focus { transform: translateY(0); }

.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  display: flex;
  width: 252px;
  flex-direction: column;
  padding: 30px 18px 22px;
  background: #f9fafb;
  border-right: 1px solid var(--line);
}

.brand-lockup { display: flex; align-items: center; gap: 12px; padding: 0 10px; }
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  object-fit: cover;
  transform: rotate(-5deg);
}
.brand-name { font-size: 17px; font-weight: 800; letter-spacing: -0.03em; }
.brand-caption { margin-top: 1px; color: var(--ink-faint); font-family: "DM Mono", monospace; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; }

.sidebar-section-label { margin: 54px 12px 12px; color: var(--ink-faint); font-family: "DM Mono", monospace; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; }
.sidebar-nav { display: grid; gap: 4px; }
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 11px 12px;
  color: var(--ink-soft);
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 11px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}
.sidebar-link:hover { color: var(--ink); background: #eef1f5; transform: translateX(2px); }
.sidebar-link.is-active { color: var(--blue); background: var(--blue-soft); font-weight: 700; }
.sidebar-link svg { width: 17px; height: 17px; stroke-width: 1.8; }
.sidebar-footer { display: grid; gap: 9px; margin-top: auto; padding: 16px 8px 0; border-top: 1px solid var(--line); }
.local-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 4px; color: var(--ink-faint); font-size: 11px; }
.status-dot { display: inline-block; width: 7px; height: 7px; background: var(--mint); border-radius: 99px; box-shadow: 0 0 0 4px var(--mint-soft); }
.sidebar-help { display: flex; align-items: center; gap: 9px; padding: 8px 4px; color: var(--ink-soft); font-size: 12px; background: transparent; border: 0; cursor: pointer; }
.sidebar-help:hover { color: var(--blue); }
.sidebar-help svg { width: 15px; height: 15px; }

.main-shell { width: calc(100% - 252px); min-width: 0; margin-left: 252px; padding: 0 58px 52px; }
.topbar { display: flex; align-items: center; justify-content: space-between; min-height: 82px; border-bottom: 1px solid var(--line); }
.topbar-context { display: flex; align-items: center; gap: 10px; color: var(--ink-faint); font-family: "DM Mono", monospace; font-size: 10px; letter-spacing: 0.08em; }
.topbar-current { color: var(--ink-soft); font-family: "Manrope", "Noto Sans SC", sans-serif; font-size: 12px; letter-spacing: 0; }
.topbar-slash { color: var(--line-strong); }
.topbar-actions { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; gap: 9px; color: var(--ink-faint); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; transition: border-color 160ms ease, box-shadow 160ms ease; }
.search-box:focus-within { border-color: #a9c3f5; box-shadow: 0 0 0 4px rgba(35, 104, 220, 0.09); }
.search-box--top { width: min(360px, 34vw); padding: 9px 11px; }
.search-box svg { width: 16px; height: 16px; flex: 0 0 auto; }
.search-box input { width: 100%; min-width: 0; padding: 0; color: var(--ink); font-size: 12px; background: transparent; border: 0; outline: 0; }
.search-box input::placeholder { color: #a1a9b6; }
kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 22px; height: 21px; padding: 0 5px; color: var(--ink-soft); font-family: "DM Mono", monospace; font-size: 10px; line-height: 1; background: #f2f3f5; border: 1px solid var(--line); border-bottom-color: #cfd4dc; border-radius: 5px; white-space: nowrap; }
.search-box kbd { flex: 0 0 auto; color: var(--ink-faint); background: transparent; border: 0; }
.topbar-status { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-faint); font-size: 11px; white-space: nowrap; }
.mobile-menu-button { display: none !important; }

.intro-section { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; padding: 74px 0 58px; }
.intro-copy { max-width: 700px; }
.eyebrow, .section-kicker { color: var(--blue); font-family: "DM Mono", monospace; font-size: 10px; letter-spacing: 0.13em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 8px; }
.eyebrow-line { display: inline-block; width: 24px; height: 1px; background: var(--blue); }
h1, h2, p { margin: 0; }
h1 { max-width: 700px; margin-top: 18px; font-size: clamp(35px, 4.2vw, 62px); line-height: 1.12; letter-spacing: -0.055em; }
h1 em { color: var(--blue); font-style: normal; }
.intro-copy > p { max-width: 560px; margin-top: 22px; color: var(--ink-soft); font-size: 14px; line-height: 1.85; }
.intro-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 11px; margin-top: 28px; color: var(--ink-faint); font-size: 11px; }
.intro-meta strong { color: var(--ink); font-size: 14px; }
.meta-separator { display: inline-block; width: 3px; height: 3px; background: var(--line-strong); border-radius: 99px; }
.intro-aside { display: flex; align-items: center; gap: 13px; min-width: 188px; padding: 17px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.signal-ring { display: grid; width: 40px; height: 40px; place-items: center; background: var(--mint-soft); border-radius: 50%; }
.signal-ring span { width: 12px; height: 12px; background: var(--mint); border-radius: 50%; box-shadow: 0 0 0 6px rgba(25, 143, 120, 0.11); }
.aside-label { color: var(--ink-faint); font-size: 10px; }
.aside-value { margin-top: 3px; font-size: 14px; font-weight: 700; }
.aside-note { margin-top: 3px; color: var(--ink-faint); font-size: 10px; }

.recent-section, .catalog-section { margin-top: 10px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.section-heading--compact { align-items: center; }
.section-heading h2 { margin-top: 6px; font-size: 21px; letter-spacing: -0.03em; }
.text-button { padding: 5px 0; color: var(--ink-faint); font-size: 11px; background: none; border: 0; border-bottom: 1px solid transparent; cursor: pointer; }
.text-button:hover { color: var(--blue); border-bottom-color: var(--blue); }
.recent-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.recent-card { position: relative; display: flex; align-items: center; gap: 12px; min-width: 0; padding: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow); transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease; }
.recent-card:hover { border-color: #bfd1f4; box-shadow: 0 14px 32px rgba(31, 45, 68, 0.09); transform: translateY(-2px); }
.recent-card-main { display: flex; align-items: center; gap: 11px; min-width: 0; flex: 1; }
.recent-card .tool-icon { width: 34px; height: 34px; border-radius: 10px; }
.recent-card .tool-icon svg { width: 17px; height: 17px; }
.recent-card-copy { min-width: 0; }
.recent-card-name { overflow: hidden; font-size: 13px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.recent-card-meta { overflow: hidden; margin-top: 4px; color: var(--ink-faint); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.recent-card-arrow { color: var(--ink-faint); }
.recent-card-arrow svg { width: 15px; height: 15px; }
.recent-empty { grid-column: 1 / -1; padding: 20px; color: var(--ink-faint); font-size: 12px; text-align: center; background: var(--surface-muted); border: 1px dashed var(--line-strong); border-radius: var(--radius-md); }

.catalog-section { margin-top: 66px; }
.catalog-heading { align-items: center; }
.catalog-summary { color: var(--ink-faint); font-size: 11px; }
.catalog-summary span { color: var(--ink); font-size: 17px; font-weight: 700; }
.catalog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 20px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.filter-list { display: flex; flex-wrap: wrap; gap: 7px; }
.filter-chip { padding: 8px 12px; color: var(--ink-soft); font-size: 11px; background: transparent; border: 1px solid transparent; border-radius: 99px; cursor: pointer; transition: background 160ms ease, color 160ms ease, border-color 160ms ease; }
.filter-chip:hover { color: var(--ink); background: #edf0f4; }
.filter-chip.is-active { color: var(--blue); background: var(--blue-soft); border-color: #d2e0fb; font-weight: 700; }
.catalog-sort { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-faint); font-size: 10px; white-space: nowrap; }
.catalog-sort svg { width: 14px; height: 14px; }
.tool-list { display: grid; gap: 10px; margin-top: 14px; }
.tool-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 18px; min-height: 88px; padding: 15px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease; }
.tool-row:hover { border-color: #bfd1f4; box-shadow: var(--shadow); transform: translateY(-1px); }
.tool-main-link { display: flex; align-items: center; gap: 15px; min-width: 0; }
.tool-icon { display: grid; width: 42px; height: 42px; flex: 0 0 auto; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: 12px; }
.tool-icon svg { width: 20px; height: 20px; stroke-width: 1.8; }
.tool-icon--mint { color: var(--mint); background: var(--mint-soft); }
.tool-icon--orange { color: var(--orange); background: var(--orange-soft); }
.tool-icon--purple { color: var(--purple); background: var(--purple-soft); }
.tool-copy { min-width: 0; }
.tool-title-line { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.tool-name { font-size: 14px; font-weight: 700; }
.tool-tag { padding: 3px 6px; color: var(--ink-faint); font-size: 9px; background: #f3f4f6; border-radius: 4px; }
.tool-tag--blue { color: var(--blue); background: var(--blue-soft); }
.tool-tag--orange { color: var(--orange); background: var(--orange-soft); }
.tool-desc { overflow: hidden; margin-top: 5px; color: var(--ink-soft); font-size: 11px; line-height: 1.5; text-overflow: ellipsis; white-space: nowrap; }
.tool-url { display: inline-flex; align-items: center; gap: 5px; margin-top: 6px; color: var(--ink-faint); font-family: "DM Mono", monospace; font-size: 9px; }
.tool-url svg { width: 11px; height: 11px; }
.tool-actions { display: flex; align-items: center; gap: 12px; }
.favorite-button, .open-button { display: inline-grid; place-items: center; border: 0; cursor: pointer; }
.favorite-button { width: 34px; height: 34px; color: #b1b8c4; background: transparent; border-radius: 9px; }
.favorite-button:hover { color: var(--orange); background: var(--orange-soft); }
.favorite-button.is-favorite { color: var(--orange); }
.favorite-button svg { width: 17px; height: 17px; }
.open-button { gap: 7px; padding: 9px 12px; color: var(--blue); font-size: 11px; font-weight: 700; background: var(--blue-soft); border-radius: 9px; }
.open-button:hover { color: #fff; background: var(--blue); }
.open-button svg { width: 14px; height: 14px; }
.tool-list-empty { padding: 34px; color: var(--ink-faint); text-align: center; background: var(--surface-muted); border: 1px dashed var(--line-strong); border-radius: var(--radius-md); }
.tool-list-empty strong { display: block; margin-bottom: 7px; color: var(--ink); font-size: 14px; }
.tool-list-empty span { font-size: 11px; }

.guide-section { display: flex; align-items: center; gap: 16px; margin-top: 54px; padding: 20px 22px; background: #f0f4fd; border: 1px solid #d9e4fa; border-radius: var(--radius-md); }
.guide-icon { display: grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; color: var(--blue); background: #fff; border-radius: 10px; }
.guide-icon svg { width: 17px; height: 17px; }
.guide-section h2 { margin-top: 3px; font-size: 14px; }
.guide-section p { margin-top: 6px; color: var(--ink-soft); font-size: 11px; line-height: 1.6; }
.guide-section .outline-button { margin-left: auto; }
.outline-button { display: inline-flex; align-items: center; gap: 7px; flex: 0 0 auto; padding: 9px 12px; color: var(--blue); font-size: 11px; font-weight: 700; background: #fff; border: 1px solid #c9d9f6; border-radius: 9px; cursor: pointer; }
.outline-button:hover { color: #fff; background: var(--blue); border-color: var(--blue); }
.outline-button svg { width: 13px; height: 13px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 18px; color: var(--ink-faint); font-family: "DM Mono", monospace; font-size: 9px; letter-spacing: 0.03em; border-top: 1px solid var(--line); }

.icon-button { display: inline-grid; width: 36px; height: 36px; place-items: center; color: var(--ink-soft); background: transparent; border: 1px solid transparent; border-radius: 9px; cursor: pointer; }
.icon-button:hover { color: var(--blue); background: var(--blue-soft); }
.icon-button svg { width: 17px; height: 17px; }
.toast { position: fixed; z-index: 80; right: 24px; bottom: 24px; max-width: min(340px, calc(100vw - 48px)); padding: 11px 14px; color: #fff; font-size: 12px; background: var(--ink); border-radius: 9px; box-shadow: 0 10px 24px rgba(24, 33, 50, 0.18); opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity 180ms ease, transform 180ms ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }
.help-dialog { width: min(420px, calc(100% - 32px)); padding: 22px; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 24px 80px rgba(18, 30, 48, 0.22); }
.help-dialog::backdrop { background: rgba(15, 26, 42, 0.32); backdrop-filter: blur(2px); }
.dialog-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.dialog-header h2 { margin-top: 6px; font-size: 20px; letter-spacing: -0.03em; }
.shortcut-list { display: grid; gap: 10px; margin-top: 24px; }
.shortcut-list > div { display: flex; align-items: center; gap: 7px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.shortcut-list span { flex: 1; color: var(--ink-soft); font-size: 12px; }
.dialog-note { margin-top: 18px; color: var(--ink-faint); font-size: 11px; line-height: 1.65; }

.drawer-backdrop { display: none; }

@media (max-width: 1120px) {
  .main-shell { padding-right: 34px; padding-left: 34px; }
  .intro-section { padding-top: 58px; }
  .recent-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tool-row { padding-right: 14px; padding-left: 14px; }
  .open-button { padding-right: 10px; padding-left: 10px; }
}

@media (max-width: 820px) {
  .sidebar { width: 270px; transform: translateX(-100%); transition: transform 220ms ease; box-shadow: 12px 0 30px rgba(18, 30, 48, 0.12); }
  .sidebar.is-open { transform: translateX(0); }
  .drawer-backdrop { position: fixed; inset: 0; z-index: 19; display: block; background: rgba(15, 26, 42, 0.28); }
  .drawer-backdrop[hidden] { display: none; }
  .main-shell { width: 100%; margin-left: 0; padding-right: 24px; padding-left: 24px; }
  .topbar { min-height: 72px; }
  .mobile-menu-button { display: inline-grid !important; }
  .topbar-context { margin-right: auto; margin-left: 8px; }
  .topbar-kicker, .topbar-slash { display: none; }
  .search-box--top { width: min(320px, 45vw); }
  .topbar-status { display: none; }
  .intro-section { align-items: flex-start; flex-direction: column; padding-top: 54px; }
  .intro-aside { align-self: stretch; min-width: 0; }
}

@media (max-width: 620px) {
  .main-shell { padding-right: 16px; padding-left: 16px; }
  .topbar { gap: 10px; }
  .topbar-context { overflow: hidden; }
  .topbar-current { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .search-box--top { width: 40px; padding: 10px; border-color: transparent; background: transparent; box-shadow: none; }
  .search-box--top input, .search-box--top kbd { display: none; }
  .search-box--top svg { width: 18px; height: 18px; }
  .intro-section { gap: 24px; padding-top: 42px; padding-bottom: 42px; }
  h1 { font-size: 34px; line-height: 1.18; }
  .intro-copy > p { font-size: 13px; }
  .intro-meta { gap: 8px; line-height: 1.6; }
  .recent-grid { display: flex; overflow-x: auto; gap: 10px; margin-right: -16px; padding-right: 16px; padding-bottom: 3px; scrollbar-width: thin; }
  .recent-card { width: 232px; flex: 0 0 232px; padding: 13px; }
  .catalog-section { margin-top: 50px; }
  .catalog-heading { align-items: flex-start; }
  .catalog-toolbar { align-items: flex-start; flex-direction: column; gap: 12px; }
  .filter-list { overflow-x: auto; flex-wrap: nowrap; width: calc(100% + 16px); padding-bottom: 3px; padding-right: 16px; }
  .filter-chip { flex: 0 0 auto; }
  .catalog-sort { display: none; }
  .tool-row { grid-template-columns: 1fr; gap: 13px; align-items: start; }
  .tool-main-link { align-items: flex-start; }
  .tool-desc { white-space: normal; }
  .tool-actions { justify-content: flex-end; padding-left: 57px; }
  .open-button { padding-right: 14px; padding-left: 14px; }
  .guide-section { align-items: flex-start; flex-wrap: wrap; padding: 16px; }
  .guide-section > div:nth-child(2) { flex: 1 1 calc(100% - 54px); }
  .guide-section .outline-button { width: 100%; justify-content: center; margin-left: 52px; }
  .site-footer { flex-direction: column; gap: 8px; }
  .help-dialog { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}