:root {
  color-scheme: light;
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f5f7fb;
  --ink: #172033;
  --muted: #637083;
  --line: #dce2ec;
  --panel: #ffffff;
  --blue: #275ee8;
  --blue-dark: #1f49b5;
  --blue-soft: #eef3ff;
  --green: #177a55;
  --green-soft: #eaf7f1;
  --amber: #9a5a08;
  --amber-soft: #fff7e6;
  --red: #b53b4a;
  --red-soft: #fff0f1;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  background: #f5f7fb;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(39, 94, 232, 0.24);
  outline-offset: 2px;
}

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

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

.site-header {
  width: min(1180px, calc(100% - 40px));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-size: 20px;
  font-weight: 700;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.header-link,
.visual-guide a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 600;
}

.header-link svg,
.visual-guide a svg,
.primary-button svg {
  width: 16px;
  height: 16px;
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.intro {
  max-width: 780px;
  padding: 68px 0 36px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue-dark);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.intro h1 {
  margin: 0;
  font-size: 48px;
  line-height: 1.18;
}

.intro h1 code {
  padding: 0 8px;
  border-radius: 6px;
  color: #fff;
  background: var(--ink);
  font-size: 0.88em;
}

.intro > p:last-child {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 18px 50px rgba(29, 45, 75, 0.08);
  overflow: hidden;
}

.control-panel,
.result-panel {
  padding: 32px;
}

.control-panel {
  border-right: 1px solid var(--line);
  background: #fbfcfe;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.step-number {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid #c6d0e0;
  border-radius: 50%;
  color: var(--blue-dark);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.section-heading h2,
.result-header h2,
.visual-guide h2,
.linkagi-band h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
}

.section-heading p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.client-switcher {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 20px;
}

.client-option {
  min-height: 88px;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #485467;
  background: #fff;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.client-option:hover {
  border-color: #aab9d1;
}

.client-option.is-active {
  border-color: var(--blue);
  color: var(--blue-dark);
  background: var(--blue-soft);
  box-shadow: inset 0 0 0 1px var(--blue);
}

.client-option svg {
  width: 22px;
  height: 22px;
}

.client-option span {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.input-section {
  margin-top: 38px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.url-field {
  display: block;
  margin-top: 20px;
}

.url-field > span:first-child {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.input-row {
  min-height: 52px;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) 34px;
  align-items: center;
  gap: 10px;
  padding: 0 9px 0 14px;
  border: 1px solid #c9d2e2;
  border-radius: 6px;
  background: #fff;
}

.input-row:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(39, 94, 232, 0.1);
}

.input-row > svg {
  width: 18px;
  height: 18px;
  color: #8290a5;
}

.input-row input {
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-family: var(--mono);
  font-size: 13px;
}

.icon-button {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border: 0;
  border-radius: 6px;
  color: #536177;
  background: transparent;
  cursor: pointer;
}

.icon-button:hover {
  color: var(--blue-dark);
  background: var(--blue-soft);
}

.icon-button svg {
  width: 17px;
  height: 17px;
}

.quick-actions {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.quick-actions > span {
  color: #8994a5;
  font-size: 12px;
}

.secondary-button,
.copy-button,
.primary-button,
.address-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
}

.secondary-button {
  min-height: 36px;
  padding: 0 11px;
  border: 1px solid #ced6e3;
  color: #465268;
  background: #fff;
  font-size: 12px;
}

.secondary-button:hover {
  border-color: #9eabc0;
  color: var(--ink);
}

.secondary-button svg,
.copy-button svg,
.address-copy svg {
  width: 15px;
  height: 15px;
}

.result-panel {
  min-width: 0;
}

.result-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.status-badge {
  min-height: 32px;
  padding: 0 11px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.status-badge svg {
  width: 15px;
  height: 15px;
}

.status-ok {
  color: var(--green);
  background: var(--green-soft);
}

.status-warning {
  color: var(--red);
  background: var(--red-soft);
}

.route-equation {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22px minmax(0, 0.72fr) 22px;
  gap: 8px;
  align-items: center;
}

.route-part {
  min-width: 0;
  min-height: 82px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fafbfc;
}

.route-part > span {
  display: block;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 11px;
}

.route-part code {
  display: block;
  overflow-wrap: anywhere;
  color: #234ca8;
  font-size: 12px;
  line-height: 1.55;
}

.route-final {
  position: relative;
  grid-column: 1 / -1;
  min-height: 94px;
  padding-right: 54px;
  border-color: #aabde9;
  background: var(--blue-soft);
}

.route-final code {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.copy-route {
  position: absolute;
  top: 30px;
  right: 12px;
}

.operator {
  color: #98a2b2;
  font-family: var(--mono);
  font-size: 20px;
  text-align: center;
}

.diagnosis {
  margin-top: 14px;
  padding: 14px;
  display: flex;
  align-items: flex-start;
  gap: 11px;
  border-radius: 6px;
}

.diagnosis > svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 1px;
}

.diagnosis strong {
  display: block;
  font-size: 13px;
}

.diagnosis p {
  margin: 5px 0 0;
  font-size: 12px;
  line-height: 1.65;
}

.diagnosis-ok {
  color: #176848;
  background: var(--green-soft);
}

.diagnosis-warning {
  color: #943343;
  background: var(--red-soft);
}

.config-section {
  margin-top: 22px;
  border: 1px solid #273149;
  border-radius: 6px;
  background: #111827;
  overflow: hidden;
}

.config-heading {
  min-height: 54px;
  padding: 10px 12px 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid #2c364c;
}

.config-heading span,
.config-heading small {
  display: block;
}

.config-heading span {
  color: #f4f7fb;
  font-size: 12px;
  font-weight: 600;
}

.config-heading small {
  margin-top: 2px;
  color: #8e9ab1;
  font-family: var(--mono);
  font-size: 10px;
}

.copy-button {
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid #46516a;
  color: #e9edf4;
  background: #202a40;
  font-size: 11px;
}

.copy-button:hover {
  border-color: #6c7a96;
  background: #2a3650;
}

.config-section pre {
  min-height: 174px;
  margin: 0;
  padding: 18px;
  overflow: auto;
  color: #c4e2ff;
  font-size: 11px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.visual-guide {
  margin-top: 74px;
  padding: 34px 0 0;
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.guide-copy {
  padding-top: 18px;
}

.visual-guide h2 {
  font-size: 28px;
}

.visual-guide p:not(.eyebrow) {
  margin: 16px 0 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.visual-guide img {
  width: 100%;
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(29, 45, 75, 0.07);
}

.linkagi-band {
  margin-top: 72px;
  padding: 28px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid #cdd8ef;
  border-radius: 8px;
  background: #edf3ff;
}

.linkagi-copy {
  display: flex;
  align-items: center;
  gap: 18px;
}

.linkagi-copy .eyebrow {
  margin-bottom: 4px;
}

.linkagi-copy h2 {
  font-size: 19px;
}

.linkagi-copy p:last-child {
  margin: 6px 0 0;
  color: #5d6c83;
  font-size: 13px;
}

.band-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.address-copy,
.primary-button {
  min-height: 42px;
  padding: 0 14px;
  font-size: 12px;
}

.address-copy {
  border: 1px solid #b7c6e4;
  color: #284775;
  background: #fff;
  font-family: var(--mono);
}

.address-copy:hover {
  border-color: #89a0cc;
}

.primary-button {
  border: 1px solid var(--blue);
  color: #fff;
  background: var(--blue);
}

.primary-button:hover {
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

footer {
  width: min(1180px, calc(100% - 40px));
  min-height: 90px;
  margin: 36px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #7a8698;
  font-size: 12px;
}

footer a:hover {
  color: var(--blue-dark);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  min-height: 42px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 6px;
  color: #fff;
  background: #172033;
  box-shadow: 0 10px 30px rgba(16, 24, 40, 0.24);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 10px);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 10;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast svg {
  width: 16px;
  height: 16px;
  color: #7fe0b3;
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .control-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .visual-guide {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .guide-copy {
    max-width: 640px;
    padding-top: 0;
  }

  .linkagi-band {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .site-header,
  main,
  footer {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 70px;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 17px;
  }

  .header-link {
    font-size: 12px;
  }

  .intro {
    padding: 46px 0 26px;
  }

  .intro h1 {
    font-size: 34px;
  }

  .intro > p:last-child {
    font-size: 15px;
  }

  .control-panel,
  .result-panel {
    padding: 22px 18px;
  }

  .client-switcher {
    grid-template-columns: 1fr;
  }

  .client-option {
    min-height: 48px;
    padding: 0 14px;
    flex-direction: row;
    justify-content: flex-start;
  }

  .quick-actions,
  .result-header,
  .config-heading {
    align-items: flex-start;
  }

  .quick-actions {
    flex-direction: column;
  }

  .route-equation {
    grid-template-columns: 1fr;
  }

  .operator {
    height: 18px;
    line-height: 18px;
  }

  .route-final {
    grid-column: auto;
  }

  .result-header {
    flex-direction: column;
  }

  .visual-guide {
    margin-top: 54px;
  }

  .visual-guide h2 {
    font-size: 23px;
  }

  .linkagi-band {
    margin-top: 54px;
    padding: 22px 18px;
  }

  .linkagi-copy {
    align-items: flex-start;
  }

  .linkagi-copy .brand-mark {
    display: none;
  }

  .band-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .address-copy,
  .primary-button {
    width: 100%;
  }

  footer {
    padding: 24px 0;
    align-items: flex-start;
    flex-direction: column;
  }
}

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