:root[data-platform-page] { --paper: #fafbfc; --surface: #ffffff; --ink: #10151d; --muted: #5d6672; --line: #d9dfe7; --accent: #2d4566; --input: #ffffff; --soft: #edf1f5; --on-accent: #ffffff; --error: #a92c30; --platform-primary: #2d4566; }
:root[data-platform-page][data-theme="dark"] { --paper: #111418; --surface: #191e25; --ink: #f4f6f9; --muted: #b1bac7; --line: #374151; --accent: #b7c7dd; --input: #141a22; --soft: #222c3a; --on-accent: #111418; --error: #f2adb3; --platform-primary: #354f72; }
:root[data-platform-page] .primary { background: var(--platform-primary); border-color: var(--platform-primary); color: #ffffff; }
@media (prefers-reduced-motion: no-preference) { :root[data-platform-page] { scroll-behavior: smooth; } }
.site-header .platform-nav { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: start; }
.platform-nav-links { display: flex; flex-wrap: wrap; gap: 8px 22px; min-width: 0; }
.platform-nav .platform-login { grid-column: 2; margin-left: auto; color: var(--ink); }
.platform-nav .platform-login:hover { color: var(--accent); }
.platform-hero { border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0,1.15fr) minmax(0,1fr); gap: clamp(40px,7vw,104px); align-items: center; padding-block: 56px 80px; }
.platform-hero-copy { min-width: 0; }
.platform-hero .eyebrow, .landing-section .eyebrow { color: var(--accent); }
.platform-hero h1 { margin: 28px 0 24px; max-width: 18ch; text-wrap: balance; word-break: keep-all; }
.platform-brand-line { color: var(--accent); font-size: clamp(1rem,1.4vw,1.2rem); line-height: 1.8; margin: 0 0 16px; word-break: keep-all; }
.platform-lead { max-width: 34em; color: var(--muted); line-height: 1.9; margin: 0 0 32px; }
.platform-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.platform-actions a { display: inline-flex; align-items: center; min-height: 44px; }
.landing-how-start { justify-content: space-between; gap: 36px; min-height: 48px; padding: 12px 20px; font-size: .8125rem; }
.platform-text-link { font-size: .875rem; text-decoration: underline; text-underline-offset: 5px; line-height: 1.8; }
.platform-text-link:hover { color: var(--accent); }
.platform-small { margin: 20px 0 0; font-size: .75rem; color: var(--muted); line-height: 1.9; }
.platform-preview { min-width: 0; width: 100%; max-width: 430px; margin: 0; justify-self: end; }
.preview-label-row { display: flex; justify-content: space-between; gap: 16px; font-size: .6875rem; letter-spacing: .06em; color: var(--muted); margin-bottom: 12px; }
.preview-space { min-width: 0; }
.preview-wordmark { font-family: Georgia,serif; font-size: .9375rem; line-height: 1.6; letter-spacing: -.03em; }
.preview-kicker { color: var(--muted); font-size: .625rem; line-height: 1.8; }
.preview-space img { display: block; width: 100%; height: auto; background: var(--soft); }
.preview-story { display: flex; align-items: baseline; gap: 12px; padding-top: 18px; }
.preview-story > span, .landing-number { color: var(--accent); font-family: "Consolas",monospace; font-size: .6875rem; }
.preview-story h2 { margin: 0 0 8px; font-size: .875rem; font-weight: 500; }
.preview-story p { margin: 0; font-size: .75rem; color: var(--muted); line-height: 1.8; }
.preview-credit { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 4px 16px; border-top: 1px solid var(--line); margin-top: 20px; padding-top: 12px; }
.landing-section { border-top: 1px solid var(--line); padding-block: 48px 64px; scroll-margin-top: 24px; }
.landing-section-heading h2 { font-family: inherit; font-size: clamp(1.5rem,2.5vw,2.125rem); font-weight: 500; letter-spacing: -.045em; line-height: 1.5; margin: 22px 0 40px; text-wrap: balance; word-break: keep-all; }
html[lang="en"] .landing-section-heading h2 { font-family: Georgia,serif; font-weight: 400; }
.landing-about-intro { max-width: 64ch; margin: 0 0 32px; color: var(--muted); font-size: .9375rem; line-height: 1.9; }
.landing-guide-heading { font-size: 1rem; font-weight: 500; line-height: 1.7; margin: 0 0 20px; }
.landing-tab-guide { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 40px; margin: 0; }
.landing-tab-guide > div { min-width: 0; border-top: 1px solid var(--line); padding-block: 22px; }
.landing-tab-guide dt { font-size: .9375rem; font-weight: 500; line-height: 1.7; }
.landing-tab-guide dd { margin: 8px 0 0; color: var(--muted); font-size: .875rem; line-height: 1.9; }
.landing-features { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; }
.landing-features article { min-width: 0; border-top: 1px solid var(--line); padding-top: 24px; }
.landing-features h3 { margin: 18px 0 12px; font-size: 1rem; font-weight: 500; line-height: 1.7; }
.landing-features p, .landing-steps p { color: var(--muted); font-size: .875rem; line-height: 1.9; margin: 0; }
.landing-how { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.1fr); gap: 40px 72px; padding: clamp(28px,4vw,56px); margin-block: 24px 32px; border: 0; border-radius: 3px; background: var(--platform-primary); color: #ffffff; }
.landing-how .landing-section-heading .eyebrow, .landing-how .platform-text-link { color: #e4ebf5; }
.landing-how .landing-section-heading h2 { max-width: 14em; margin-bottom: 28px; }
:root[data-platform-page] .landing-how-start { display: inline-flex; align-items: center; background: #ffffff; border-color: #ffffff; color: #203650; }
.landing-how a:focus-visible { outline-color: #ffffff; }
.landing-steps { list-style: none; counter-reset: start-step; margin: 0 0 24px; padding: 0; }
.landing-steps li { counter-increment: start-step; display: grid; grid-template-columns: 28px minmax(0,1fr); gap: 6px 18px; padding-block: 20px; border-bottom: 1px solid rgb(255 255 255 / .25); }
.landing-steps li:first-child { padding-top: 0; }
.landing-steps li::before { content: counter(start-step,decimal-leading-zero); grid-row: 1 / 3; font: .6875rem/1.9 "Consolas",monospace; color: #e4ebf5; }
.landing-steps strong { display: block; font-size: .9375rem; font-weight: 500; margin: 0; line-height: 1.7; }
.landing-steps p { grid-column: 2; color: #e4ebf5; font-size: .8125rem; }
.platform-fields { display: grid; gap: 18px; min-width: 0; }
.space-address { display: flex; align-items: center; gap: 8px; }
.space-address input { min-width: 0; }
.platform-field-help { font-size: .8125rem; color: var(--muted); line-height: 1.9; margin: 0; }
#platform-auth p, #platform-account p, #space-editor p { line-height: 1.8; overflow-wrap: anywhere; }
#platform-account a { overflow-wrap: anywhere; }
#space-url { text-decoration: underline; text-underline-offset: 4px; }
#platform-status, #auth-status, #space-status { color: var(--muted); line-height: 1.8; }
#platform-status:empty, #auth-status:empty, #space-status:empty { display: none; }
#auth-status[data-error="true"], #space-status[data-error="true"] { color: var(--error); }
#platform-form button, #space-form button { min-height: 44px; }
.onboarding-steps { display: flex; gap: 20px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0 0 28px; color: var(--muted); font-size: .8125rem; line-height: 1.8; }
.onboarding-steps li { display: flex; gap: 8px; align-items: baseline; }
.onboarding-steps li[aria-current="step"] { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; }
.onboarding-steps li > span:first-child { font-family: "Consolas",monospace; color: var(--accent); }
.onboarding-account { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 20px; margin-bottom: 24px; color: var(--muted); font-size: .8125rem; }
.onboarding-account span { overflow-wrap: anywhere; min-width: 0; }
@media(max-width:850px) { .platform-hero { grid-template-columns: minmax(0,1fr); padding-block: 48px 56px; gap: 48px; } .platform-hero h1 { max-width: 19ch; } .platform-preview { max-width: 430px; justify-self: center; } .landing-how { grid-template-columns: minmax(0,1fr); gap: 40px; } }
@media(max-width:580px) {
  .platform-nav-links { gap: 6px 14px; }
  .site-header .platform-nav { gap: 6px 14px; }
  .platform-hero { padding-top: 36px; gap: 36px; }
  .platform-hero h1 { font-size: clamp(2.1rem,8.8vw,3rem); }
  .landing-tab-guide { grid-template-columns: minmax(0,1fr); }
  .landing-features { grid-template-columns: minmax(0,1fr); gap: 28px; }
  .landing-section { padding-block: 36px 44px; }
  .landing-how { padding: 28px 24px; }
  .landing-section-heading h2 { margin-bottom: 28px; }
  #platform-auth, #platform-account, #space-editor { padding: 20px; }
  .onboarding-steps { gap: 10px 16px; }
}