:root {
  color-scheme: light;
  --canvas: #f5f7fa;
  --surface: #ffffff;
  --surface-soft: #eef2f6;
  --surface-accent: #e9eeff;
  --surface-success: #e4f4ef;
  --ink: #172033;
  --ink-soft: #2d3748;
  --muted: #5c6879;
  --subtle: #5c6879;
  --line: #d8e0e8;
  --line-strong: #c5cfda;
  --primary: #496bdc;
  --primary-hover: #3e59c2;
  --primary-active: #31489f;
  --link: #365ac7;
  --success: #167a62;
  --danger: #b5475b;
  --focus: rgba(73, 107, 220, 0.28);
  --shadow-sm: 0 10px 30px -22px rgba(32, 52, 96, 0.3), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 24px 64px -38px rgba(38, 63, 126, 0.28), 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-header: 0 1px 0 rgba(255, 255, 255, 0.7), 0 12px 34px -28px rgba(32, 52, 96, 0.36);
  --shadow-panel: 0 30px 76px -42px rgba(38, 63, 126, 0.34), 0 1px 2px rgba(15, 23, 42, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.72);
  --shadow-hover: 0 20px 48px -30px rgba(38, 63, 126, 0.32), 0 2px 6px rgba(15, 23, 42, 0.05);
  --ambient-primary: rgba(73, 107, 220, 0.13);
  --ambient-secondary: rgba(22, 122, 98, 0.075);
  --canvas-wash-primary: rgba(73, 107, 220, 0.055);
  --canvas-wash-secondary: rgba(22, 122, 98, 0.035);
  --hero-surface-start: rgba(255, 255, 255, 0.54);
  --hero-surface-end: rgba(245, 247, 250, 0.68);
  --section-surface: rgba(255, 255, 255, 0.78);
  --section-soft: rgba(238, 242, 246, 0.82);
  --section-accent: rgba(233, 238, 255, 0.52);
  --header-glass: rgba(255, 255, 255, 0.9);
  --nav-glass: rgba(255, 255, 255, 0.97);
  --panel-glass: rgba(255, 255, 255, 0.88);
  --glass-line: rgba(197, 207, 218, 0.92);
  --accent-line: #c7d2f8;
  --success-line: #bcded2;
  --success-ink: #2c6254;
  --result-line: #cbd6e7;
  --loading: #2b7895;
  --disabled-bg: #eef2f6;
  --disabled-ink: #788496;
  --code-bg: #f8fafc;
  --code-toolbar: #eef2f6;
  --code-border: #cbd5e1;
  --code-text: #24324a;
  --code-muted: #58677a;
  --code-selected-bg: #dfe7ff;
  --code-selected-text: #172033;
  --code-comment: #697386;
  --code-accent: #b4236b;
  --code-string: #18794e;
  --code-command: #0369a1;
  --code-property: #6d28d9;
  --code-option: #365ac7;
  --code-function: #8a6100;
  --code-selection: rgba(73, 107, 220, 0.24);
  --radius-sm: 6px;
  --radius-md: 8px;
  --max-width: 1180px;
  --header-height: 64px;
  --font-sans: "Manrope Variable", "Noto Sans SC Variable", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-display: "Manrope Variable", "Noto Sans SC Variable", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  --paper: var(--canvas);
  --panel: var(--surface);
  --dark: var(--canvas);
  --dark-soft: var(--surface);
  --line-dark: var(--line-strong);
  --blue: var(--primary);
  --blue-hover: var(--primary-hover);
  --blue-action: var(--primary);
  --blue-action-hover: var(--primary-hover);
  --blue-text: var(--link);
  --blue-dark: var(--link);
  --blue-soft: var(--surface-accent);
  --green: var(--success);
  --green-soft: var(--surface-success);
}

html.dark {
  color-scheme: dark;
  --canvas: #020617;
  --surface: #0f172a;
  --surface-soft: #182235;
  --surface-accent: #1a2954;
  --surface-success: #0b2f2a;
  --ink: #f1f5f9;
  --ink-soft: #e2e8f0;
  --muted: #b8c4d4;
  --subtle: #94a3b8;
  --line: #27364b;
  --line-strong: #3b4c64;
  --primary: #496bdc;
  --primary-hover: #3e59c2;
  --primary-active: #31489f;
  --link: #9db0ff;
  --success: #52c9a5;
  --danger: #fb7185;
  --focus: rgba(126, 154, 255, 0.38);
  --shadow-sm: 0 12px 34px -22px rgba(0, 0, 0, 0.62), 0 1px 2px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 28px 72px -38px rgba(0, 0, 0, 0.68), 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-header: 0 1px 0 rgba(255, 255, 255, 0.035), 0 14px 38px -28px rgba(0, 0, 0, 0.82);
  --shadow-panel: 0 32px 84px -40px rgba(0, 0, 0, 0.76), 0 2px 8px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.055);
  --shadow-hover: 0 22px 56px -30px rgba(0, 0, 0, 0.78), 0 2px 8px rgba(0, 0, 0, 0.34);
  --ambient-primary: rgba(73, 107, 220, 0.17);
  --ambient-secondary: rgba(82, 201, 165, 0.09);
  --canvas-wash-primary: rgba(73, 107, 220, 0.085);
  --canvas-wash-secondary: rgba(82, 201, 165, 0.045);
  --hero-surface-start: rgba(2, 6, 23, 0.58);
  --hero-surface-end: rgba(15, 23, 42, 0.54);
  --section-surface: rgba(15, 23, 42, 0.76);
  --section-soft: rgba(24, 34, 53, 0.82);
  --section-accent: rgba(26, 41, 84, 0.52);
  --header-glass: rgba(15, 23, 42, 0.9);
  --nav-glass: rgba(15, 23, 42, 0.98);
  --panel-glass: rgba(15, 23, 42, 0.9);
  --glass-line: rgba(59, 76, 100, 0.92);
  --accent-line: #38519b;
  --success-line: #236054;
  --success-ink: #a7e1d1;
  --result-line: #34476a;
  --loading: #4aa7c5;
  --disabled-bg: #111827;
  --disabled-ink: #718096;
  --code-bg: #080b10;
  --code-toolbar: #111827;
  --code-border: #334155;
  --code-text: #eef3ff;
  --code-muted: #aab3c0;
  --code-selected-bg: rgba(102, 135, 255, 0.18);
  --code-selected-text: #f4f7ff;
  --code-comment: #8794a8;
  --code-accent: #ff7ac6;
  --code-string: #a6e3a1;
  --code-command: #69d5ff;
  --code-property: #c7b4ff;
  --code-option: #91adff;
  --code-function: #ffe28a;
  --code-selection: rgba(102, 135, 255, 0.42);
}

html {
  background: var(--canvas);
}

body.page-home,
body.page-guide {
  background-color: var(--canvas);
  background-image:
    linear-gradient(124deg, var(--canvas-wash-primary) 0%, transparent 34%),
    linear-gradient(306deg, var(--canvas-wash-secondary) 0%, transparent 30%);
  color: var(--ink);
  font-family: var(--font-sans);
  font-optical-sizing: auto;
  font-synthesis: none;
  font-weight: 400;
  line-height: 1.68;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.page-home h1,
body.page-home h2,
body.page-home h3,
body.page-guide h1,
body.page-guide h2,
body.page-guide h3 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-synthesis: none;
  line-height: 1.2;
  letter-spacing: 0;
}

body.page-home .shell,
body.page-guide .shell {
  width: min(calc(100% - 48px), var(--max-width));
}

/* Shared navigation and theme controls */
body.page-home .site-header,
body.page-guide .site-header {
  z-index: 100;
  height: var(--header-height);
  min-height: var(--header-height);
  border-bottom: 1px solid var(--line);
  background: var(--header-glass);
  box-shadow: var(--shadow-header);
  color: var(--ink);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}

body.page-home .header-inner,
body.page-guide .header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  height: 100%;
  min-height: var(--header-height);
}

body.page-home .brand,
body.page-guide .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

body.page-home .brand-icon,
body.page-guide .brand-icon {
  display: block;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
}

body.page-home .brand-copy,
body.page-guide .brand-copy {
  display: flex;
  align-items: center;
}

body.page-home .brand-wordmark,
body.page-guide .brand-wordmark {
  display: block;
  width: auto;
  height: 21px;
  opacity: 0.94;
}

body.page-home .brand-wordmark-theme-dark,
body.page-guide .brand-wordmark-theme-dark,
html.dark body.page-home .brand-wordmark-theme-light,
html.dark body.page-guide .brand-wordmark-theme-light {
  display: none;
}

html.dark body.page-home .brand-wordmark-theme-dark,
html.dark body.page-guide .brand-wordmark-theme-dark {
  display: block;
}

body.page-home .nav-panel,
body.page-guide .nav-panel {
  display: flex;
  align-items: center;
  margin-left: auto;
  background: transparent;
}

body.page-home .nav-links,
body.page-guide .nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
}

body.page-home .nav-links a,
body.page-guide .nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 620;
  line-height: 1;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

body.page-home .nav-links a:hover,
body.page-home .nav-links a:focus-visible,
body.page-guide .nav-links a:hover,
body.page-guide .nav-links a:focus-visible {
  color: var(--link);
  background: var(--surface-accent);
}

body.page-home .nav-links a[aria-current="page"],
body.page-guide .nav-links a[aria-current="page"] {
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .nav-links a::after {
  display: none;
}

body.page-home .nav-links .header-action,
body.page-guide .nav-links .header-action {
  border-color: var(--line-strong);
  border-style: solid;
  border-width: 1px;
  background: var(--surface);
  color: var(--ink-soft);
}

body.page-home .nav-links .header-action:hover,
body.page-home .nav-links .header-action:focus-visible,
body.page-guide .nav-links .header-action:hover,
body.page-guide .nav-links .header-action:focus-visible {
  border-color: var(--primary);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .menu-toggle,
body.page-guide .menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  padding: 10px;
  border-color: var(--line-strong);
  border-style: solid;
  border-width: 1px;
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}

body.page-home .menu-toggle span,
body.page-guide .menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

body.page-home .menu-toggle[aria-expanded="true"] span:nth-child(1),
body.page-guide .menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

body.page-home .menu-toggle[aria-expanded="true"] span:nth-child(2),
body.page-guide .menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

body.page-home .menu-toggle[aria-expanded="true"] span:nth-child(3),
body.page-guide .menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

body.page-home .theme-toggle,
body.page-guide .theme-toggle {
  display: inline-grid;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

body.page-home .theme-toggle,
body.page-guide .theme-toggle {
  margin-left: 2px;
}

body.page-home .theme-toggle:hover,
body.page-guide .theme-toggle:hover {
  border-color: var(--primary);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .theme-icon,
body.page-guide .theme-icon {
  width: 18px;
  height: 18px;
}

body.page-home .theme-icon-sun,
body.page-guide .theme-icon-sun {
  display: none;
}

html.dark body.page-home .theme-icon-moon,
html.dark body.page-guide .theme-icon-moon {
  display: none;
}

html.dark body.page-home .theme-icon-sun,
html.dark body.page-guide .theme-icon-sun {
  display: block;
}

body.page-home.menu-open,
body.page-guide.menu-open {
  overflow: hidden;
}

/* Shared commands */
body.page-home .button,
body.page-guide .button {
  min-height: 46px;
  padding: 0 18px;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 660;
  box-shadow: none;
}

body.page-home .button:hover,
body.page-guide .button:hover {
  transform: translateY(-1px);
}

body.page-home .button-accent,
body.page-home .button-dark,
body.page-guide .button-primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

body.page-home .button-accent:hover,
body.page-home .button-dark:hover,
body.page-guide .button-primary:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
}

body.page-home .button-light,
body.page-home .button-ghost,
body.page-guide .button-secondary {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
}

body.page-home .button-light:hover,
body.page-home .button-ghost:hover,
body.page-guide .button-secondary:hover {
  border-color: var(--primary);
  color: var(--link);
}

body.page-home .button:focus-visible,
body.page-guide .button:focus-visible,
body.page-home a:focus-visible,
body.page-guide a:focus-visible,
body.page-home button:focus-visible,
body.page-guide button:focus-visible,
body.page-home input:focus-visible,
body.page-guide input:focus-visible,
body.page-home select:focus-visible,
body.page-guide select:focus-visible,
body.page-home summary:focus-visible,
body.page-guide summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

body.page-home .skip-link,
body.page-guide .skip-link {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--link);
}

/* Homepage */
body.page-home .hero {
  position: relative;
  isolation: isolate;
  min-height: 600px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(132deg, var(--hero-surface-start), var(--hero-surface-end));
  color: var(--ink);
}

body.page-home .hero::before,
body.page-guide .guide-hero::before {
  position: absolute;
  z-index: 0;
  inset: -32% -14%;
  display: block;
  background:
    linear-gradient(118deg, transparent 10%, var(--ambient-primary) 40%, transparent 68%),
    linear-gradient(304deg, transparent 18%, var(--ambient-secondary) 49%, transparent 76%);
  content: "";
  filter: blur(52px);
  opacity: 0.9;
  pointer-events: none;
  transform: translateZ(0);
}

body.page-home .hero-inner {
  position: relative;
  z-index: 1;
  min-height: 600px;
}

body.page-home .reveal-item {
  opacity: 1;
  transform: none;
  transition: none;
}

body.page-home .reveal-item.is-visible {
  animation: khaix-reveal 520ms cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: var(--reveal-delay, 0ms);
}

@keyframes khaix-reveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.page-home .hero .eyebrow {
  border-color: var(--accent-line);
  border-radius: 6px;
  background: var(--surface-accent);
  color: var(--link);
  backdrop-filter: none;
}

body.page-home .hero .eyebrow::before {
  background: var(--primary);
  box-shadow: none;
}

body.page-home .hero-name {
  color: var(--ink);
  font-size: 60px;
  font-weight: 780;
  line-height: 1.04;
}

body.page-home .hero-offer {
  color: var(--ink-soft);
  font-size: 34px;
  font-weight: 680;
  line-height: 1.2;
}

body.page-home .hero-accent {
  color: var(--link);
}

body.page-home .hero-lead {
  color: var(--muted);
}

body.page-home .hero .button-light {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
  backdrop-filter: none;
}

body.page-home .gateway-panel {
  border-color: var(--glass-line);
  background: var(--panel-glass);
  color: var(--ink);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

body.page-home .gateway-header,
body.page-home .gateway-targets,
body.page-home .gateway-target {
  border-color: var(--line);
}

body.page-home .gateway-header,
body.page-home .gateway-endpoint,
body.page-home .gateway-route {
  background: var(--surface);
  color: var(--ink);
}

body.page-home .gateway-heading span,
body.page-home .gateway-route-label span,
body.page-home .gateway-source small,
body.page-home .gateway-core small,
body.page-home .gateway-target-copy small,
body.page-home .gateway-label {
  color: var(--subtle);
}

body.page-home .gateway-badge {
  border-color: var(--accent-line);
  border-radius: 6px;
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .gateway-endpoint code,
body.page-home .gateway-route-label strong,
body.page-home .gateway-source strong,
body.page-home .gateway-target-copy strong {
  color: var(--ink-soft);
}

body.page-home .endpoint-copy {
  border-color: var(--line-strong);
  background: var(--surface-soft);
  color: var(--muted);
}

body.page-home .endpoint-copy:hover {
  border-color: var(--primary);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .gateway-core {
  border-color: var(--accent-line);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .gateway-target-marker {
  background: var(--surface-accent);
  color: var(--primary);
}

body.page-home .gateway-note {
  border-color: var(--success-line);
  background: var(--surface-success);
  color: var(--success-ink);
}

body.page-home .gateway-note::before {
  background: var(--success);
}

body.page-home .section {
  padding-block: 82px;
}

body.page-home .section-white {
  background: var(--section-surface);
}

body.page-home .section-dark {
  border-color: var(--line);
  background: linear-gradient(128deg, var(--section-soft) 0%, var(--section-accent) 52%, var(--section-soft) 100%);
  color: var(--ink);
}

body.page-home .section-heading .eyebrow,
body.page-home .section-dark .section-heading .eyebrow {
  color: var(--link);
}

body.page-home .section-heading h2,
body.page-home .section-dark .section-heading h2 {
  color: var(--ink);
  font-size: 32px;
  font-weight: 720;
  line-height: 1.22;
}

body.page-home .section-heading > p,
body.page-home .section-dark .section-heading > p {
  color: var(--muted);
}

body.page-home .model-card,
body.page-home .faq-list details {
  border-color: var(--line);
  background: var(--surface);
  box-shadow: none;
}

body.page-home .model-card-more {
  background: var(--surface);
}

body.page-home .model-coming-mark {
  border-color: var(--accent-line);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .model-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

body.page-home .model-card::before {
  background: var(--primary);
}

body.page-home .model-card.claude::before {
  background: var(--success);
}

body.page-home .model-provider-name .brand-openai,
body.page-home .model-provider-name .brand-anthropic {
  color: var(--ink-soft);
}

body.page-home .model-tags li,
body.page-home .model-note {
  border-color: var(--line);
  background: var(--surface-soft);
  color: var(--muted);
}

body.page-home .model-note a,
body.page-home .faq-list summary:hover,
body.page-home .footer-column a:hover {
  color: var(--link);
}

body.page-home .capability {
  border-color: var(--line);
}

body.page-home .capability-grid {
  border-color: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

body.page-home .capability-index,
body.page-home .step-number {
  border-color: var(--accent-line);
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .step {
  border-color: var(--line);
}

body.page-home .step h3 {
  color: var(--ink-soft);
  font-weight: 650;
}

body.page-home .step p {
  color: var(--muted);
}

body.page-home .use-case-mark {
  background: var(--surface-accent);
  color: var(--link);
}

body.page-home .use-case {
  border-color: var(--line);
}

body.page-home .model-card h3,
body.page-home .capability h3,
body.page-home .use-case h3 {
  color: var(--ink-soft);
  font-weight: 650;
}

body.page-home .model-card > p,
body.page-home .capability p,
body.page-home .use-case p,
body.page-home .faq-answer {
  color: var(--muted);
}

body.page-home .faq-list summary::after {
  border-color: var(--line-strong);
}

body.page-home .faq-list details[open]:not(.is-closing) summary::after {
  border-color: var(--primary);
  background: var(--primary);
}

body.page-home .code-tool {
  border-color: var(--code-border);
  background: var(--code-bg);
  box-shadow: var(--shadow-panel);
}

body.page-home .code-toolbar {
  border-color: var(--code-border);
  background: var(--code-toolbar);
}

body.page-home .code-tabs {
  border-color: var(--code-border);
}

body.page-home .code-tab,
body.page-home .copy-button {
  color: var(--code-muted);
}

body.page-home .code-tab[aria-selected="true"] {
  background: var(--code-selected-bg);
  box-shadow: inset 0 0 0 1px var(--accent-line);
  color: var(--code-selected-text);
}

body.page-home .copy-button {
  border-color: var(--code-border);
  color: var(--code-text);
}

body.page-home .copy-button:hover {
  border-color: var(--primary);
  color: var(--link);
}

body.page-home .code-panel {
  background: var(--code-bg);
  color: var(--code-text);
}

body.page-home .code-comment {
  color: var(--code-comment);
}

body.page-home .code-accent {
  color: var(--code-accent);
}

body.page-home .code-string {
  color: var(--code-string);
}

body.page-home .code-command,
body.page-home .code-url {
  color: var(--code-command);
}

body.page-home .code-property {
  color: var(--code-property);
}

body.page-home .code-option {
  color: var(--code-option);
}

body.page-home .code-function {
  color: var(--code-function);
}

body.page-home .code-panel ::selection {
  background: var(--code-selection);
  color: var(--code-text);
}

/* Guides */
body.page-guide .guide-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(132deg, var(--hero-surface-start), var(--hero-surface-end));
  color: var(--ink);
}

body.page-guide .hero-inner {
  position: relative;
  z-index: 1;
  min-height: 450px;
  padding-block: 48px;
}

body.page-guide .breadcrumbs {
  color: var(--subtle);
}

body.page-guide .breadcrumbs a,
body.page-guide .eyebrow {
  color: var(--link);
}

body.page-guide h1 {
  color: var(--ink);
  font-size: 48px;
  font-weight: 760;
  line-height: 1.12;
}

body.page-guide .hero-lead {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

body.page-guide .hero-meta {
  color: var(--subtle);
}

body.page-relay .flow-panel,
body.page-billing .cost-map {
  border-color: var(--glass-line);
  background: var(--panel-glass);
  color: var(--ink);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

body.page-relay .flow-panel h2,
body.page-billing .cost-map h2 {
  color: var(--ink-soft);
}

body.page-relay .flow li,
body.page-billing .cost-row {
  border-color: var(--line);
  background: var(--surface-soft);
}

body.page-relay .flow strong,
body.page-billing .cost-row dd {
  color: var(--ink-soft);
}

body.page-relay .flow small,
body.page-billing .cost-row dt {
  color: var(--muted);
}

body.page-relay .flow-index {
  background: var(--primary);
}

body.page-guide .article-wrap {
  padding-block: 56px 82px;
}

body.page-guide .toc {
  min-width: 0;
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
  background: transparent;
}

body.page-guide .article {
  min-width: 0;
  width: 100%;
}

body.page-guide .comparison {
  max-width: 100%;
}

body.page-guide .toc a {
  border-radius: 5px;
}

body.page-guide .toc a:hover,
body.page-guide .toc a:focus-visible {
  background: var(--surface-accent);
  color: var(--link);
}

body.page-guide .article section + section {
  border-color: var(--line);
}

body.page-guide .article h2 {
  color: var(--ink);
  font-size: 32px;
  font-weight: 720;
  line-height: 1.24;
}

body.page-guide .article h3 {
  color: var(--ink-soft);
  font-weight: 650;
}

body.page-guide .article p,
body.page-guide .article ul,
body.page-guide .article ol,
body.page-guide .comparison td,
body.page-guide .check-list li,
body.page-guide .steps li {
  color: var(--muted);
}

body.page-guide .article a {
  color: var(--link);
}

body.page-guide .definition,
body.page-guide .formula {
  border-color: var(--primary);
  background: var(--surface-accent);
  color: var(--ink-soft);
}

body.page-guide .definition p,
body.page-guide .formula p {
  color: var(--ink-soft);
}

body.page-guide .security-note,
body.page-guide .live-notice {
  border-color: var(--success-line);
  background: var(--surface-success);
  color: var(--success-ink);
}

body.page-guide .security-note p,
body.page-guide .live-notice p {
  color: var(--success-ink);
}

body.page-guide .key-item,
body.page-guide .case-item,
body.page-guide .breakdown-item,
body.page-guide .reason-item,
body.page-guide .check-list li,
body.page-guide .comparison,
body.page-guide .faq-list details,
body.page-billing .calculator-panel,
body.page-billing .account-panel {
  border-color: var(--line);
  background: var(--surface);
  box-shadow: none;
}

body.page-billing .calculator-panel {
  box-shadow: var(--shadow-panel);
}

body.page-billing .account-panel {
  box-shadow: var(--shadow-sm);
}

body.page-guide .comparison th {
  background: var(--surface-soft);
  color: var(--ink-soft);
}

body.page-guide .comparison th,
body.page-guide .comparison td {
  border-color: var(--line);
}

body.page-guide .faq-list summary {
  color: var(--ink-soft);
}

body.page-billing .calculator-band {
  border-color: var(--line);
  background: var(--surface);
}

body.page-billing .status-dot[data-state="loading"] {
  background: var(--loading);
}

body.page-billing .account-panel {
  background: var(--surface-soft);
}

body.page-billing .account-data-content {
  border-color: var(--line);
}

body.page-billing .account-metrics div {
  border-color: var(--line-strong);
}

body.page-billing .account-metrics dt,
body.page-billing .field-help {
  color: var(--subtle);
}

body.page-billing .account-metrics dd,
body.page-billing .field label,
body.page-billing .field-label,
body.page-billing .mode-field legend {
  color: var(--ink-soft);
}

body.page-billing .field input,
body.page-billing .field select {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

body.page-billing .field input::placeholder {
  color: var(--subtle);
}

body.page-billing .field select option {
  background: var(--surface);
  color: var(--ink);
}

body.page-billing .field input:focus,
body.page-billing .field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus);
}

body.page-billing .mode-switch label {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--muted);
}

body.page-billing .result-panel {
  border-color: var(--accent-line);
  background: var(--surface-accent);
  color: var(--ink);
}

body.page-billing .result-panel h3,
body.page-billing .result-list dd,
body.page-billing .result-total strong {
  color: var(--ink);
}

body.page-billing .result-list div {
  border-color: var(--result-line);
}

body.page-billing .result-list dt,
body.page-billing .result-note {
  color: var(--muted);
}

body.page-billing .result-total span {
  color: var(--link);
}

body.page-billing .clear-button,
body.page-billing .account-button,
body.page-billing .account-link,
body.page-billing .apply-rate-button {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
}

body.page-billing .clear-button:hover,
body.page-billing .clear-button:focus-visible,
body.page-billing .account-button:hover,
body.page-billing .account-button:focus-visible,
body.page-billing .account-link:hover,
body.page-billing .account-link:focus-visible,
body.page-billing .apply-rate-button:hover,
body.page-billing .apply-rate-button:focus-visible {
  border-color: var(--primary);
  color: var(--link);
}

body.page-billing .apply-rate-button:disabled,
body.page-billing .account-button:disabled {
  border-color: var(--line);
  background: var(--disabled-bg);
  color: var(--disabled-ink);
}

body.page-billing .mode-switch label:has(input:checked) {
  border-color: var(--primary);
  background: var(--surface-accent);
  color: var(--link);
}

/* Shared conversion and footer bands */
body.page-home .cta-band,
body.page-guide .cta-band {
  border-color: var(--accent-line);
  background: linear-gradient(124deg, var(--surface-accent) 0%, var(--section-accent) 58%, var(--surface-success) 140%);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

body.page-home .cta-copy h2,
body.page-guide .cta-inner h2 {
  color: var(--ink);
}

body.page-home .cta-copy p,
body.page-guide .cta-inner p {
  color: var(--muted);
}

body.page-home .site-footer,
body.page-guide .site-footer {
  padding-block: 54px 28px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--section-soft), var(--surface-soft));
  color: var(--muted);
}

body.page-home .footer-main,
body.page-guide .footer-main {
  display: grid;
  grid-template-columns: minmax(260px, 1.2fr) repeat(3, minmax(140px, 0.55fr));
  gap: 46px;
  padding-bottom: 42px;
}

body.page-home .footer-brand-name,
body.page-guide .footer-brand-name {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

body.page-home .footer-brand p,
body.page-guide .footer-brand p {
  max-width: 360px;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

body.page-home .footer-column h3,
body.page-guide .footer-column h3 {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 700;
}

body.page-home .footer-column ul,
body.page-guide .footer-column ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  font-size: 14px;
  list-style: none;
}

body.page-home .footer-column a,
body.page-guide .footer-column a {
  color: var(--link);
  text-decoration: none;
}

body.page-home .footer-bottom,
body.page-guide .footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

body.page-home .footer-status,
body.page-guide .footer-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

body.page-home .footer-status::before,
body.page-guide .footer-status::before {
  width: 7px;
  height: 7px;
  background: var(--success);
  content: "";
}

body.page-home .footer-brand-name,
body.page-home .footer-column h3,
body.page-guide .footer-brand-name,
body.page-guide .footer-column h3 {
  color: var(--ink);
}

body.page-home .footer-brand p,
body.page-home .footer-column ul,
body.page-guide .footer-brand p,
body.page-guide .footer-column ul {
  color: var(--muted);
}

body.page-home .footer-bottom,
body.page-guide .footer-bottom {
  border-color: var(--line);
  color: var(--subtle);
}

body.page-home .footer-bottom > span:first-child,
body.page-guide .footer-bottom > span:first-child {
  color: var(--ink-soft);
}

body.page-home .footer-status::before,
body.page-guide .footer-status::before {
  background: var(--success);
}

@media (max-width: 900px) {
  body.page-home .header-inner,
  body.page-guide .header-inner {
    gap: 10px;
  }

  body.page-home .theme-toggle,
  body.page-guide .theme-toggle {
    margin-left: auto;
  }

  body.page-home .menu-toggle,
  body.page-guide .menu-toggle {
    position: relative;
    z-index: 3;
    display: grid !important;
    visibility: visible;
    place-content: center;
    margin-left: 0;
  }

  body.page-home .nav-panel,
  body.page-guide .nav-panel {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100svh - var(--header-height));
    margin: 0;
    padding: 12px 0 16px;
    overflow-y: auto;
    border-bottom: 1px solid var(--line);
    background: var(--nav-glass);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(16px) saturate(135%);
    -webkit-backdrop-filter: blur(16px) saturate(135%);
  }

  body.page-home .nav-panel.open,
  body.page-guide .nav-panel.open {
    display: block;
  }

  body.page-home .nav-links,
  body.page-guide .nav-links {
    align-items: stretch;
    flex-direction: column;
    gap: 4px;
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
  }

  body.page-home .nav-links a,
  body.page-guide .nav-links a {
    min-height: 44px;
    padding: 12px 14px;
    border: 0;
    border-radius: 6px;
    font-size: 15px;
  }

  body.page-home .nav-links .header-action,
  body.page-guide .nav-links .header-action {
    border: 1px solid var(--line-strong);
  }

  body.page-home .hero,
  body.page-home .hero-inner {
    min-height: 0;
  }

  body.page-guide h1 {
    font-size: 44px;
  }

  body.page-guide .hero-inner {
    min-height: 0;
  }

  body.page-guide .toc {
    position: static;
    display: flex;
    grid-template-columns: none;
    gap: 4px;
    padding: 0 0 12px;
    overflow-x: auto;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    scrollbar-width: thin;
  }

  body.page-guide .toc strong,
  body.page-guide .toc a {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  body.page-guide .toc strong {
    display: grid;
    align-items: center;
    margin: 0 8px 0 0;
  }

  body.page-home .footer-main,
  body.page-guide .footer-main {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  body.page-home .footer-brand,
  body.page-guide .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  body.page-home .shell,
  body.page-guide .shell {
    width: min(calc(100% - 32px), var(--max-width));
  }

  body.page-home .hero-name {
    font-size: 46px;
  }

  body.page-home .hero-offer {
    font-size: 25px;
  }

  body.page-guide h1 {
    font-size: 36px;
  }

  body.page-guide .hero-inner {
    gap: 24px;
    padding-block: 36px;
  }

  body.page-home .hero::before,
  body.page-guide .guide-hero::before {
    inset: -22% -42%;
    filter: blur(36px);
    opacity: 0.74;
  }

  body.page-relay .flow-panel,
  body.page-billing .cost-map {
    padding: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  body.page-home .gateway-panel {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  body.page-relay .flow li {
    min-height: 56px;
    padding-block: 10px;
  }

  body.page-home .section,
  body.page-guide .article-wrap {
    padding-block: 64px;
  }

  body.page-home .section-heading h2,
  body.page-guide .article h2 {
    font-size: 28px;
  }

  body.page-home .cta-copy h2,
  body.page-guide .cta-inner h2 {
    font-size: 28px;
  }

  body.page-home .footer-main,
  body.page-guide .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.page-home .footer-column:last-child,
  body.page-guide .footer-column:last-child {
    grid-column: 1 / -1;
  }

  body.page-home .footer-bottom,
  body.page-guide .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 360px) {
  body.page-home .brand-wordmark,
  body.page-guide .brand-wordmark {
    display: none !important;
  }
}

@media (max-width: 390px) {
  body.page-home .footer-main,
  body.page-guide .footer-main {
    grid-template-columns: 1fr;
  }

  body.page-home .footer-brand,
  body.page-home .footer-column:last-child,
  body.page-guide .footer-brand,
  body.page-guide .footer-column:last-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.page-home *,
  body.page-home *::before,
  body.page-home *::after,
  body.page-guide *,
  body.page-guide *::before,
  body.page-guide *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}