/* The public portal is one layout, with shared product colors and theme state. */
.portal { --portal-width: 1160px; background: var(--canvas); }
.portal-width { width: min(var(--portal-width), calc(100% - 80px)); margin-inline: auto; }
.portal-header { border-bottom: 1px solid var(--rule-faint); background: var(--canvas); }
.portal-header-inner { min-height: 84px; display: flex; align-items: center; gap: 48px; }
.portal-brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.portal-brand .brand-logo { width: 32px; height: 32px; }
.portal-brand strong { font-size: 20px; font-weight: 600; letter-spacing: -.6px; }
.portal-brand strong span { font-weight: 400; color: var(--ink-2); }
.portal-nav { display: flex; align-items: center; gap: 32px; margin-left: auto; color: var(--ink-2); font-size: 14px; }
.portal-nav a:hover, .portal-text-link:hover, .portal-footer > a:last-child:hover { color: var(--signal); }
.portal-account { display: flex; align-items: center; gap: 16px; }
.portal-account .theme-toggle { border-color: transparent; background: transparent; }
.portal-button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; min-height: 48px; padding: 12px 24px; border: 1px solid var(--signal); border-radius: 8px; background: var(--signal); color: var(--canvas); font-size: 14px; font-weight: 600; transition: background var(--t), border-color var(--t); }
.portal-button:hover { background: var(--signal-2); border-color: var(--signal-2); }
.portal-button-small { min-height: 38px; padding: 8px 16px; gap: 16px; font-size: 13px; }
.portal-arrow { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.portal-text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-2); font-size: 13px; transition: color var(--t); }
.portal-intro { position: relative; padding: 68px 0 56px; text-align: center; }
.portal-intro::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(ellipse at 50% 30%, var(--signal-soft), transparent 65%); }
.portal-intro-label { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: 1px; color: var(--ink-2); margin-bottom: 24px; }
.portal-spark { font-size: 20px; color: var(--signal); line-height: 1; }
.portal-intro h1 { margin: 0; font-size: clamp(40px, 4.8vw, 64px); font-weight: 600; letter-spacing: -2px; line-height: 1.27; }
.portal-intro h1 > span { color: var(--signal); }
.portal-description { margin: 24px 0 0; font-size: 16px; color: var(--ink-2); line-height: 1.9; }
.portal-mobile-break { display: none; }
.portal-intro-actions { display: flex; align-items: center; justify-content: center; gap: 24px; margin-top: 28px; }
.portal-intro-note { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 20px; color: var(--ink-3); font-size: 11px; }
.portal-intro-note svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.portal-tools { scroll-margin-top: 32px; }
.portal-section-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.portal-section-head h2 { margin: 0; font-size: 17px; font-weight: 500; }
.portal-section-head > span { color: var(--ink-3); font-size: 12px; }
.portal-tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--control-border); border-radius: 14px; overflow: hidden; background: var(--surface); }
.portal-tool { display: flex; flex-direction: column; padding: 28px; transition: background var(--t); }
.portal-tool + .portal-tool { border-left: 1px solid var(--control-border); }
.portal-tool:hover { background: var(--surface-raised); }
.portal-tool:focus-visible { outline-offset: -4px; }
.portal-tool-featured { background: linear-gradient(145deg, var(--signal-soft), transparent 75%); }
.portal-tool-heading { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.portal-tool-icon { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--rule-faint); border-radius: 12px; background: var(--canvas); color: var(--signal); }
.portal-tool-icon svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.portal-tool-category { color: var(--ink-3); font-size: 12px; }
.portal-tool-arrow { margin-left: auto; color: var(--ink-3); font-size: 19px; transition: color var(--t); }
.portal-tool:hover .portal-tool-arrow { color: var(--signal); }
.portal-tool h3 { font-size: 20px; line-height: 1.4; margin: 0 0 12px; letter-spacing: -.5px; }
.portal-tool > p { font-size: 13px; line-height: 1.9; color: var(--ink-2); max-width: 270px; margin-bottom: 28px; }
.portal-tool-bottom { display: flex; flex-direction: column; gap: 12px; margin-top: auto; }
.portal-tool-bottom > span { display: flex; justify-content: space-between; align-items: center; color: var(--signal); font-size: 13px; }
.portal-tool-bottom > small { color: var(--ink-3); font-size: 10px; letter-spacing: .4px; }
.portal-guide { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; margin-top: 56px; padding: 40px 0; border-top: 1px solid var(--rule-faint); }
.portal-overline { font: 10px/1.5 var(--font-mono); letter-spacing: 1.5px; color: var(--ink-3); }
.portal-guide-heading h2 { font-size: 25px; line-height: 1.45; margin: 12px 0 18px; }
.portal-steps { list-style: none; margin: 0; padding: 0; }
.portal-steps li { display: flex; gap: 24px; align-items: flex-start; padding-block: 16px; }
.portal-steps li:first-child { padding-top: 0; }
.portal-steps li + li { border-top: 1px solid var(--rule-faint); }
.portal-step-number { font: 12px/1.7 var(--font-mono); color: var(--signal); margin-top: 2px; }
.portal-steps h3 { margin: 0 0 6px; font-size: 14px; font-weight: 500; }
.portal-steps p { color: var(--ink-3); font-size: 12px; line-height: 1.8; }
.portal-footer { display: flex; align-items: center; gap: 24px; border-top: 1px solid var(--rule-faint); padding-block: 24px; font-size: 11px; color: var(--ink-3); }
.portal-footer .portal-brand { gap: 8px; }
.portal-footer .brand-logo { width: 22px; height: 22px; }
.portal-footer .portal-brand strong { font-size: 13px; letter-spacing: -.3px; color: var(--ink-2); }
.portal-footer > a:last-child { margin-left: auto; }
@media (max-width: 1000px) {
    .portal-width { width: calc(100% - 48px); }
    .portal-header-inner { gap: 28px; }
    .portal-tool { padding: 24px; }
    .portal-tool h3 { font-size: 18px; }
    .portal-guide { gap: 40px; }
}
@media (max-width: 760px) {
    .portal-header-inner { min-height: 72px; gap: 16px; }
    .portal-brand strong { font-size: 18px; }
    .portal-nav { display: none; }
    .portal-account { margin-left: auto; gap: 8px; }
    .portal-intro { padding: 48px 0; }
    .portal-intro h1 { font-size: clamp(36px, 7.5vw, 52px); letter-spacing: -1.5px; }
    .portal-description { font-size: 14px; margin-top: 20px; }
    .portal-mobile-break { display: initial; }
    .portal-intro-actions { flex-direction: column; gap: 18px; margin-top: 24px; }
    .portal-section-head { margin-bottom: 16px; }
    .portal-section-head > span { display: none; }
    .portal-tool-grid { grid-template-columns: 1fr; }
    .portal-tool + .portal-tool { border-left: 0; border-top: 1px solid var(--control-border); }
    .portal-tool { padding: 24px; }
    .portal-tool-heading { margin-bottom: 18px; }
    .portal-tool > p { max-width: none; margin-bottom: 20px; }
    .portal-tool-bottom { gap: 8px; }
    .portal-guide { grid-template-columns: 1fr; gap: 28px; padding-block: 32px; margin-top: 36px; }
    .portal-guide-heading h2 br { display: none; }
    .portal-guide-heading h2 { font-size: 22px; margin-block: 8px 12px; }
    .portal-footer { flex-wrap: wrap; gap: 12px 20px; }
    .portal-footer > a:last-child { margin-left: 0; width: 100%; }
}
@media (max-width: 400px) {
    .portal-width { width: calc(100% - 32px); }
    .portal-header-inner { gap: 8px; }
    .portal-brand { gap: 8px; }
    .portal-brand .brand-logo { width: 26px; height: 26px; }
    .portal-brand strong { font-size: 16px; }
    .portal-account { gap: 4px; }
    .portal-button-small { padding-inline: 12px; gap: 8px; }
    .portal-account .theme-toggle { width: 30px; }
    .portal-intro h1 { font-size: 36px; }
}