@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/ibm-plex-sans-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/ibm-plex-sans-600.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/ibm-plex-sans-700.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/ibm-plex-mono-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/ibm-plex-mono-600.woff2") format("woff2"); }

:root {
  color-scheme: light;
  --background: #ffffff;
  --background-alt: #f5f6f7;
  --surface: #ffffff;
  --border: #e3e5e8;
  --border-strong: #d3d6db;
  --text: #16181b;
  --text-secondary: #474d55;
  --text-tertiary: #5f6670;
  --button: #1d2025;
  --on-button: #ffffff;
  --link: #2356c4;
  --link-hover: #1a4196;
  --focus: #2356c4;
  --code-background: #f3f4f6;
  --tile: #0b0c0e;
  --castle: #f2f3f5;
  --dialog-background: #ffffff;
  --dialog-footer: #f5f6f7;
  --dialog-box: #f7f8f9;
  --dialog-border: #e3e5e8;
  --chip-background: #fdf0db;
  --chip-border: #ecd2a2;
  --chip-text: #8f5b00;
  --approve-background: #1d2025;
  --approve-text: #ffffff;
  --dialog-shadow: 0 30px 70px rgba(16, 18, 22, 0.16);
  --terminal-background: #0d0e10;
  --terminal-border: #23262b;
  --terminal-surface: #16181b;
  --terminal-surface-border: #2a2e34;
  --terminal-text: #e8eaed;
  --terminal-secondary: #b4b9c0;
  --terminal-muted: #9aa1ab;
  --terminal-link: #8fb1f5;
  --font: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --background: #0d0e10;
    --background-alt: #111214;
    --surface: #16181b;
    --border: #23262b;
    --border-strong: #30343a;
    --text: #e8eaed;
    --text-secondary: #b4b9c0;
    --text-tertiary: #959ca6;
    --button: #eceef1;
    --on-button: #0b0c0e;
    --link: #8fb1f5;
    --link-hover: #b3cbfa;
    --focus: #8fb1f5;
    --code-background: #16181b;
    --tile: #f2f3f5;
    --castle: #0b0c0e;
    --dialog-background: #141517;
    --dialog-footer: #1b1d20;
    --dialog-box: #0f1012;
    --dialog-border: #2a2d32;
    --chip-background: #2a2010;
    --chip-border: #5a4519;
    --chip-text: #e0ac45;
    --approve-background: #eceef1;
    --approve-text: #0b0c0e;
    --dialog-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    --terminal-background: #0a0b0c;
    --terminal-border: #26292e;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--background); color: var(--text); font-family: var(--font); font-size: 16px; line-height: 1.55; }
h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -0.02em; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
a { color: var(--link); text-underline-offset: 2px; }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
code { font-family: var(--mono); font-size: 0.9em; }
:not(pre) > code { background: var(--code-background); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
strong { font-weight: 600; }

.container { --gutter: 24px; --content-width: 1200px; width: 100%; max-width: calc(var(--content-width) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.container-narrow { --content-width: 1100px; }
.container-medium { --content-width: 1000px; }
.container-reading { --content-width: 820px; }
.muted { color: var(--text-secondary); }
.eyebrow { font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; color: var(--text-tertiary); }
.label { font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.note { font-size: 14px; color: var(--text-tertiary); }
.text-small { font-size: 15px; }
.stack { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.strong-link { font-weight: 600; }

.skip-link { position: absolute; left: 16px; top: -48px; z-index: 10; padding: 10px 14px; border-radius: 8px; background: var(--button); color: var(--on-button); font-weight: 600; text-decoration: none; }
.skip-link:focus { top: 12px; color: var(--on-button); }

.site-header { border-bottom: 1px solid var(--border); }
.header-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; padding-block: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 18px; }
.brand:hover { color: var(--text); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-mark rect { fill: var(--tile); }
.brand-mark path { fill: var(--castle); }
.main-nav { display: flex; flex-wrap: wrap; gap: 4px 22px; flex: 1 1 auto; font-size: 15px; }
.nav-link { color: var(--text-secondary); text-decoration: none; padding-block: 6px; }
.nav-link:hover { color: var(--text); text-decoration: underline; }
.nav-link[aria-current="page"] { color: var(--text); font-weight: 600; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border-radius: 10px; text-decoration: none; font-weight: 600; border: 1px solid transparent; }
.button svg { width: 18px; height: 18px; flex: none; }
.button-large { min-height: 48px; padding: 0 22px; }
.button-medium { min-height: 44px; padding: 0 18px; }
.button-small { min-height: 40px; padding: 0 16px; gap: 8px; border-radius: 8px; font-size: 15px; }
.button-small svg { width: 16px; height: 16px; }
.button-primary { background: var(--button); color: var(--on-button); }
.button-primary:hover { color: var(--on-button); opacity: 0.88; }
.button-secondary { border-color: var(--border-strong); color: var(--text); }
.button-secondary:hover { color: var(--text); background: var(--background-alt); }
.button-text { color: var(--link); padding-inline: 16px; }
.button-text:hover { text-decoration: underline; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.site-main { display: flex; flex-direction: column; padding-bottom: 80px; line-height: 1.6; }
.home { padding-bottom: 0; line-height: 1.55; }
.page-header { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; padding-top: 64px; padding-bottom: 32px; }
.page-header h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.06; letter-spacing: -0.025em; }
.lede { font-size: 18px; color: var(--text-secondary); max-width: 40em; }
.section-heading { display: flex; flex-direction: column; gap: 12px; max-width: 44em; }
.section-heading h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.1; }
.section-heading p { color: var(--text-secondary); }
.section { display: flex; flex-direction: column; gap: 14px; padding-block: 32px; }
.section h2 { font-size: 26px; line-height: inherit; letter-spacing: -0.015em; }
.section p { color: var(--text-secondary); }
.section-alt { background: var(--background-alt); border-top: 1px solid var(--border); }

.hero { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(480px, 100%), 1fr)); gap: 56px; align-items: center; padding-top: 80px; padding-bottom: 64px; }
.hero-text { display: flex; flex-direction: column; gap: 22px; min-width: 0; }
.hero h1 { font-size: clamp(38px, 5.4vw, 62px); line-height: 1.04; letter-spacing: -0.025em; font-weight: 700; }
.hero .lede { font-size: 19px; max-width: 34em; }
.hero .code-block { padding: 12px 16px; border-radius: 10px; font-size: 14px; }

.approval-figure { margin: 0; display: flex; justify-content: center; min-width: 0; }
.approval-dialog { width: 100%; max-width: 500px; border-radius: 16px; overflow: hidden; background: var(--dialog-background); border: 1px solid var(--dialog-border); box-shadow: var(--dialog-shadow); }
.approval-body { padding: 28px 28px 22px; display: flex; flex-direction: column; gap: 18px; }
.approval-summary { display: flex; gap: 18px; align-items: flex-start; }
.approval-icon { position: relative; flex: none; }
.approval-badge { position: absolute; right: -6px; bottom: -6px; display: flex; }
.approval-badge .brand-mark { width: 22px; height: 22px; }
.approval-badge .brand-mark rect { fill: #f2f3f5; }
.approval-badge .brand-mark path { fill: #0b0c0e; }
.approval-text { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.approval-chip { align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; background: var(--chip-background); border: 1px solid var(--chip-border); color: var(--chip-text); font-size: 13px; font-weight: 600; }
.approval-chip svg, .approval-signature svg { width: 13px; height: 13px; flex: none; }
.approval-title { font-size: 20px; line-height: 1.25; }
.approval-subtitle { font-size: 15px; color: var(--text-secondary); }
.approval-chain { font-family: var(--mono); font-size: 13px; color: var(--text-tertiary); }
.approval-signature { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-tertiary); }
.approval-detail { border-radius: 10px; border: 1px solid var(--dialog-border); background: var(--dialog-box); padding: 12px 14px; font-family: var(--mono); font-size: 13.5px; display: flex; flex-direction: column; gap: 4px; overflow-wrap: anywhere; }
.approval-detail-secondary { color: var(--text-tertiary); }
.approval-actions { padding: 14px 28px; background: var(--dialog-footer); border-top: 1px solid var(--dialog-border); display: flex; justify-content: space-between; gap: 12px; }
.approval-button { display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px; border-radius: 9px; }
.approval-button-approve { background: var(--approve-background); color: var(--approve-text); font-weight: 600; }
.approval-button-deny { border: 1px solid var(--dialog-border); }
.terminal-icon { width: 54px; height: 54px; border-radius: 13px; display: flex; align-items: center; justify-content: center; background: #050506; border: 1px solid #3a3d42; color: #33c759; font-family: var(--mono); font-size: 22px; font-weight: 600; }

.band { background: var(--background-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.band-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 20px 40px; padding-block: 28px; font-size: 15px; }
.summary-item { display: flex; flex-direction: column; gap: 2px; }
.summary-item span { color: var(--text-secondary); }

.code-block { margin: 0; padding: 18px 20px; border-radius: 12px; font-family: var(--mono); font-size: 13.5px; line-height: 1.65; overflow-x: auto; white-space: pre; min-width: 0; }
.code-block code { font-size: inherit; }
.code-block-compact { padding: 14px 16px; border-radius: 10px; font-size: 13px; line-height: 1.6; }
.code-block-dark { background: var(--terminal-background); border: 1px solid var(--terminal-border); color: var(--terminal-text); }
.code-block-dark .code-comment, .code-block-dark .code-prompt { color: var(--terminal-muted); }
.code-block-light { background: var(--code-background); border: 1px solid var(--border); color: var(--text); }
.code-block-light .code-comment, .code-block-light .code-prompt { color: var(--text-tertiary); }

.features { display: flex; flex-direction: column; gap: 40px; padding-top: 96px; padding-bottom: 32px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); gap: 20px; }
.card { padding: 24px; border-radius: 14px; border: 1px solid var(--border); background: var(--surface); display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.card h2 { font-size: 21px; line-height: inherit; letter-spacing: normal; }
.card h3 { font-size: 21px; line-height: 1.25; letter-spacing: normal; }
.card p, .card li { color: var(--text-secondary); font-size: 15px; }
.card > .code-block { margin-top: auto; }
.card-alt { background: var(--background-alt); }
.card-quiet { background: var(--background-alt); border-color: transparent; gap: 8px; }
.card-quiet .code-block-dark { border-color: transparent; }
.card-list { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; }
.icon-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 16px 32px; font-size: 15px; }
.icon-list li { display: flex; gap: 12px; align-items: flex-start; }
.icon-list svg { width: 22px; height: 22px; flex: none; margin-top: 2px; }
.icon-list li > span > span { color: var(--text-secondary); }

.self-host { padding-block: 72px; }
.dark-panel { border-radius: 18px; background: var(--terminal-background); color: var(--terminal-text); border: 1px solid var(--terminal-border); padding: clamp(28px, 5vw, 56px); display: flex; flex-direction: column; gap: 36px; }
.dark-panel .eyebrow { color: var(--terminal-muted); }
.dark-panel p, .dark-panel .section-heading p { color: var(--terminal-secondary); }
.dark-panel a { color: var(--terminal-link); }
.dark-panel a:hover { color: var(--terminal-text); }
.dark-panel > a { align-self: flex-start; }
.dark-panel :not(pre) > code { background: var(--terminal-surface); }
.step-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: 20px; }
.step { display: flex; flex-direction: column; gap: 12px; padding: 22px; border-radius: 14px; background: var(--terminal-surface); border: 1px solid var(--terminal-surface-border); min-width: 0; }
.step-number { font-family: var(--mono); font-size: 13px; color: var(--terminal-link); }
.step strong { font-size: 18px; }
.step-caption { font-size: 14px; color: var(--terminal-secondary); }
.panel-notes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: 20px 40px; font-size: 15px; border-top: 1px solid var(--terminal-surface-border); padding-top: 28px; }
.panel-notes .summary-item { gap: 4px; }
.panel-notes .summary-item span { color: var(--terminal-secondary); }

.security-summary { display: flex; flex-direction: column; gap: 32px; padding-top: 40px; padding-bottom: 72px; }
.card-grid .card:has(.spec-list) { gap: 10px; }
.card-grid .card:has(.card-list) { gap: 10px; }
.card-grid .card:has(.card-list) h3, .card-grid .card:has(.spec-list) h3 { font-size: 19px; line-height: inherit; }
.spec-list { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 14px; }
.spec-list dt { color: var(--text-tertiary); }
.spec-list dd { margin: 0; font-family: var(--mono); overflow-wrap: anywhere; }
.inline-row { display: flex; flex-wrap: wrap; gap: 12px 32px; font-size: 15px; }
.inline-row span { color: var(--text-secondary); }

.downloads { display: flex; flex-direction: column; gap: 32px; padding-block: 72px; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr)); gap: 16px; }
.download-card { padding: 22px; border-radius: 14px; border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; display: flex; flex-direction: column; gap: 6px; }
.download-card:hover { color: var(--text); border-color: var(--border-strong); }
.download-card strong { font-size: 18px; }
.download-card > span { color: var(--text-secondary); font-size: 14.5px; }
.download-card .download-card-action { margin-top: auto; padding-top: 8px; font-family: var(--mono); font-size: 13px; color: var(--link); }

.contribute { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(440px, 100%), 1fr)); gap: 48px; align-items: start; padding-block: 80px; }
.contribute .section-heading { gap: 16px; }
.contribute .section-heading p { max-width: 34em; }
.file-tree { border-radius: 14px; border: 1px solid var(--border); background: var(--surface); overflow: hidden; font-family: var(--mono); }
.file-tree-title { padding: 12px 18px; border-bottom: 1px solid var(--border); background: var(--background-alt); font-size: 13px; color: var(--text-tertiary); }
.file-tree dl { margin: 0; padding: 16px 18px; display: grid; grid-template-columns: auto 1fr; gap: 10px 24px; font-size: 14px; }
.file-tree dd { margin: 0; color: var(--text-secondary); }

.download-hero { padding: 32px; border-radius: 18px; border: 1px solid var(--border); background: var(--surface); display: grid; grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr)); gap: 32px; align-items: center; }
.download-hero h2 { font-size: 28px; line-height: inherit; letter-spacing: -0.015em; }
.download-hero .stack:last-child { gap: 8px; }
.download-hero .actions { gap: 12px 0; }
.download-section { padding-top: 8px; padding-bottom: 32px; }
.download-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: 20px; padding-top: 8px; padding-bottom: 40px; }
.download-options .card { border-radius: 16px; background: transparent; }
.download-options .card > a { align-self: flex-start; }
.download-options .card > .code-block { margin-top: 0; }
.link-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; font-size: 14.5px; }
.download-checks { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(420px, 100%), 1fr)); gap: 20px; padding-top: 8px; }
.download-checks .card { border-radius: 16px; gap: 12px; }

.key-flow { list-style: none; margin: 0; padding: 16px 0 48px; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 16px; }
.key-flow-step { padding: 20px; border-radius: 14px; border: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.key-flow-step > span { font-size: 14.5px; color: var(--text-secondary); }
.key-flow-number { font-family: var(--mono); font-size: 13px; color: var(--text-tertiary); }
.key-flow-step-alt { background: var(--background-alt); }
.key-flow-step-server { background: var(--terminal-background); border-color: var(--terminal-border); color: var(--terminal-text); }
.key-flow-step-server > span { color: var(--terminal-secondary); }
.key-flow-step-server .key-flow-number { color: var(--terminal-muted); }
.two-column { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr)); gap: 24px; padding-block: 32px; }
.two-column .section { padding-block: 0; gap: 10px; }
.two-column .section p, .two-column .card-list { font-size: 15px; color: var(--text-secondary); }
.security-notes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 20px; padding-top: 32px; }

.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
.data-table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: 14.5px; }
.data-table-wide { min-width: 720px; }
.data-table th { background: var(--background-alt); text-align: left; padding: 11px 16px; font-weight: 600; }
.data-table td { padding: 11px 16px; border-top: 1px solid var(--border); vertical-align: top; }
.threat-subject { width: 26%; }

.privacy { display: flex; flex-direction: column; gap: 48px; padding-top: 64px; }
.privacy .page-header { padding: 0; }
.privacy .section { padding: 0; }
.summary-box { padding: 24px; border-radius: 14px; background: var(--background-alt); border: 1px solid var(--border); display: grid; grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr)); gap: 20px 28px; font-size: 15px; }
.prose-list { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; color: var(--text-secondary); }
.privacy .operator-box { padding: 24px; border-radius: 14px; border: 1px solid var(--border); }
.privacy .operator-box h2 { font-size: 22px; }
.operator-box p, .operator-box .prose-list { font-size: 15px; }
.operator-box .prose-list { gap: 6px; }

.site-footer { border-top: 1px solid var(--border); }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding-block: 32px; font-size: 14px; color: var(--text-tertiary); }
.footer-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--text); }
.footer-brand .brand-mark { width: 22px; height: 22px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-left: auto; }
.footer-nav a { color: var(--text-secondary); text-decoration: none; }
.footer-nav a:hover { color: var(--text); text-decoration: underline; }

@media (max-width: 720px) {
  .container { --gutter: 16px; }
  .header-row { gap: 10px 18px; }
  .main-nav { order: 3; flex-basis: 100%; gap: 4px 18px; }
  .header-row .button { margin-left: auto; }
  .page-header, .privacy { padding-top: 40px; }
  .hero { padding-top: 40px; gap: 40px; }
  .features { padding-top: 64px; }
  .approval-body { padding: 20px 18px 18px; }
  .approval-summary { gap: 14px; }
  .approval-actions { padding: 12px 18px; }
  .download-hero { padding: 22px; }
  .footer-nav { margin-left: 0; }
}