/* Stratus — reference kit (Tastefolio). Persian-first enterprise platform: product mega menu, split headlines,
   icon rail + contextual sub-navigation, wizards with summaries. Requires tokens.css. RTL-native. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: var(--fw-regular) var(--fs-md)/var(--lh-body) var(--font-sans); -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-strong); }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: var(--radius-sm); }
[dir="rtl"] .flip-rtl { transform: scaleX(-1); }
.sr-only { position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; inset-inline-start: 12px; inset-block-start: -60px; z-index: 100; background: var(--brand); color: var(--brand-ink); padding: 10px 14px; border-radius: var(--radius-md); }
.skip-link:focus { inset-block-start: 12px; }
[class^="icon-"], [class*=" icon-"] { line-height: 1; font-size: 1.15em; }

.container { max-inline-size: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.row { display: flex; align-items: center; gap: var(--gap, var(--space-3)); flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: var(--gap, var(--space-4)); }
.grid { display: grid; gap: var(--gap, var(--space-4)); grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); }
.grid > * { min-inline-size: 0; }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(min(var(--cols, 3), 2), minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid { grid-template-columns: minmax(0, 1fr); } }
.section { padding-block: clamp(56px, 8vw, 104px); }
.section-alt { background: var(--surface-2); }

/* ------------------------------------------------------------ type */
.headline { font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: var(--tracking-display); text-wrap: balance; }
.headline .l1 { display: block; font-weight: var(--fw-display); color: var(--ink); }
.headline .l2 { display: block; font-weight: 500; color: var(--brand); font-size: .78em; margin-block-start: .15em; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font-size: var(--fs-sm); font-weight: 600; color: var(--brand); margin-block-end: var(--space-3); }
.kicker::before { content: ""; inline-size: 22px; block-size: 3px; border-radius: 3px; background: var(--brand); }
.h2 { font-size: clamp(24px, 2.8vw, var(--fs-3xl)); font-weight: 700; line-height: var(--lh-tight); letter-spacing: var(--tracking-display); }
.h3 { font-size: var(--fs-lg); font-weight: 600; line-height: var(--lh-snug); }
.lead { font-size: var(--fs-lg); color: var(--ink-2); max-inline-size: 60ch; }
.muted { color: var(--ink-2); }
.subtle { color: var(--ink-3); }
.small { font-size: var(--fs-sm); }
.mono { font-family: var(--font-mono); font-size: .92em; }
.ltr { direction: ltr; unicode-bidi: isolate; }
.num { font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-block-size: var(--control-h); padding-inline: 16px; border-radius: var(--radius-md); border: 1px solid transparent; background: transparent; font-size: 14px; font-weight: 600; line-height: 1; cursor: pointer; white-space: nowrap; transition: background var(--dur-1) var(--ease), border-color var(--dur-1), color var(--dur-1); }
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { background: var(--brand-strong); color: var(--brand-ink); }
.btn-outline { border-color: var(--brand); color: var(--brand); background: var(--surface); }
.btn-outline:hover { background: var(--brand-soft); }
.btn-quiet { background: var(--surface-2); color: var(--ink); border-color: var(--line); }
.btn-quiet:hover { border-color: var(--line-2); }
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { background: var(--surface-3); color: var(--ink); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { min-block-size: var(--control-h-lg); padding-inline: 22px; font-size: 15px; }
.btn-icon { inline-size: var(--control-h); padding: 0; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }

/* ------------------------------------------------------------ site header with product mega menu */
.utility { background: var(--surface-2); border-block-end: 1px solid var(--line); font-size: 12.5px; color: var(--ink-2); }
.utility .container { display: flex; gap: var(--space-5); align-items: center; min-block-size: 34px; }
.utility a { color: var(--ink-2); }
.utility a:hover { color: var(--brand); }
.utility .end { margin-inline-start: auto; display: flex; gap: var(--space-4); align-items: center; }
.masthead { position: sticky; inset-block-start: 0; z-index: 40; background: var(--surface); border-block-end: 1px solid var(--line); }
.masthead > .container { display: flex; align-items: center; gap: var(--space-6); min-block-size: var(--header-h); }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 19px; }
.logo:hover { color: var(--ink); }
.logo-mark { inline-size: 32px; block-size: 32px; border-radius: 9px; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; }
.mainnav { display: flex; gap: 2px; }
.mainnav > a, .mainnav > button { display: inline-flex; align-items: center; gap: 4px; padding: 10px 12px; border: 0; background: none; color: var(--ink); font-size: 14.5px; font-weight: 500; cursor: pointer; border-radius: var(--radius-md); }
.mainnav > a:hover, .mainnav > button:hover, .mainnav > button[aria-expanded="true"] { color: var(--brand); background: var(--brand-soft); }
.mainnav > button .icon-chevron-down { font-size: 14px; transition: transform var(--dur-2); }
.mainnav > button[aria-expanded="true"] .icon-chevron-down { transform: rotate(180deg); }
.masthead .actions { margin-inline-start: auto; display: flex; gap: var(--space-2); align-items: center; }
.mega { position: absolute; inset-inline: 0; inset-block-start: 100%; background: var(--surface); border-block: 1px solid var(--line); box-shadow: var(--shadow-3); display: none; }
.mega[data-open] { display: block; animation: drop var(--dur-3) var(--ease); }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
.mega-in { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)) 280px; gap: var(--space-6); padding-block: var(--space-7); }
.mega h3 { font-size: 12.5px; font-weight: 600; color: var(--ink-3); margin-block-end: var(--space-3); padding-block-end: var(--space-2); border-block-end: 1px solid var(--line); }
.mega-link { display: grid; grid-template-columns: 36px 1fr; gap: 0 12px; padding: 10px; border-radius: var(--radius-md); color: var(--ink); }
.mega-link:hover { background: var(--surface-2); color: var(--ink); }
.mega-link i { grid-row: span 2; inline-size: 36px; block-size: 36px; border-radius: 9px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); }
.mega-link b { font-weight: 600; font-size: 14px; }
.mega-link span { font-size: 12.5px; color: var(--ink-3); }
.mega-aside { background: var(--surface-2); border-radius: var(--radius-lg); padding: var(--space-5); display: grid; gap: var(--space-3); align-content: start; }
.menu-btn { display: none; }
@media (max-width: 1000px) {
  .menu-btn { display: inline-flex; }
  .mainnav { display: none; position: absolute; inset-inline: 0; inset-block-start: 100%; flex-direction: column; background: var(--surface); padding: var(--space-3) var(--gutter); border-block-end: 1px solid var(--line); box-shadow: var(--shadow-3); max-block-size: 80vh; overflow: auto; }
  .mainnav[data-open] { display: flex; }
  .mainnav > a, .mainnav > button { justify-content: space-between; padding: 14px 6px; border-block-end: 1px solid var(--line); border-radius: 0; }
  .mega { position: static; box-shadow: none; border: 0; }
  .mega-in { grid-template-columns: minmax(0, 1fr); padding-block: var(--space-3); gap: var(--space-4); }
  .mega-aside { display: none; }
  .hide-md { display: none !important; }
}

/* ------------------------------------------------------------ hero & product mocks */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 72px); align-items: center; padding-block: clamp(48px, 7vw, 96px); }
.hero > * { min-inline-size: 0; }
.hero .lead { margin-block: var(--space-5) var(--space-7); }
.hero-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
@media (max-width: 960px) { .hero { grid-template-columns: minmax(0, 1fr); } }
.ui-mock { background: var(--surface-2); border-radius: 18px; padding: clamp(14px, 2.4vw, 28px); border: 1px solid var(--line); }
.ui-window { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-2); overflow: hidden; }
.ui-window-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-block-end: 1px solid var(--line); font-size: 12.5px; color: var(--ink-3); }
.ui-window-bar i.dot { inline-size: 8px; block-size: 8px; border-radius: 50%; background: var(--line-2); }
.feature-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 6vw, 88px); align-items: center; }
.feature-row + .feature-row { margin-block-start: clamp(56px, 8vw, 96px); }
.feature-row.is-flipped > :first-child { order: 2; }
.feature-row > * { min-inline-size: 0; }
@media (max-width: 900px) { .feature-row { grid-template-columns: minmax(0, 1fr); } .feature-row.is-flipped > :first-child { order: 0; } }
.checklist { list-style: none; padding: 0; margin: var(--space-5) 0; display: grid; gap: var(--space-3); }
.checklist li { display: flex; gap: var(--space-3); align-items: flex-start; color: var(--ink-2); }
.checklist li i { color: var(--brand); margin-block-start: 4px; }

/* vertical solution tabs */
.vtabs { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: var(--space-6); align-items: start; }
.vtabs [role="tablist"] { display: grid; gap: 4px; border-inline-start: 2px solid var(--line); }
.vtabs [role="tab"] { text-align: start; border: 0; background: none; padding: 12px 16px; margin-inline-start: -2px; border-inline-start: 2px solid transparent; font-weight: 600; color: var(--ink-2); cursor: pointer; display: grid; gap: 2px; }
.vtabs [role="tab"] small { font-weight: 400; color: var(--ink-3); font-size: 12.5px; }
.vtabs [role="tab"][aria-selected="true"] { border-color: var(--brand); color: var(--brand); background: linear-gradient(to left, var(--brand-soft), transparent); }
[dir="ltr"] .vtabs [role="tab"][aria-selected="true"] { background: linear-gradient(to right, var(--brand-soft), transparent); }
@media (max-width: 900px) { .vtabs { grid-template-columns: minmax(0, 1fr); } .vtabs [role="tablist"] { grid-auto-flow: column; grid-auto-columns: max-content; overflow-x: auto; border: 0; border-block-end: 2px solid var(--line); } .vtabs [role="tab"] { border: 0; border-block-end: 2px solid transparent; margin: 0 0 -2px; } .vtabs [role="tab"] small { display: none; } .vtabs [role="tab"][aria-selected="true"] { background: none; border-color: var(--brand); } }

/* dark brand band */
.band { background: var(--brand-deep); color: #fff; }
.band .muted { color: rgba(255,255,255,.7); }
.band-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-6); }
.band-stats b { display: block; font-size: clamp(30px, 3.6vw, 44px); font-weight: 700; line-height: 1.2; }
@media (max-width: 760px) { .band-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.logos { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.logos span { display: grid; place-items: center; min-block-size: 88px; font-weight: 700; color: var(--ink-3); font-size: 17px; border-inline-end: 1px solid var(--line); border-block-end: 1px solid var(--line); margin: 0 -1px -1px 0; }
@media (max-width: 760px) { .logos { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* cards */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); min-inline-size: 0; }
.card-pad { padding: var(--space-6); }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-block-end: 1px solid var(--line); }
.card-head h2, .card-head h3 { font-size: 15px; font-weight: 600; }
.card-body { padding: var(--space-5); }
.product-card { padding: var(--space-6); display: grid; gap: var(--space-3); align-content: start; transition: border-color var(--dur-2), box-shadow var(--dur-2); }
.product-card:hover { border-color: var(--brand); box-shadow: var(--shadow-2); }
.product-card .tile { inline-size: 44px; block-size: 44px; border-radius: 11px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); font-size: 20px; }

/* ------------------------------------------------------------ forms */
.field { display: grid; gap: 6px; }
.label { font-size: 13px; font-weight: 600; color: var(--ink); }
.label .req { color: var(--danger); }
.help { font-size: 12px; color: var(--ink-3); }
.input, .select, .textarea { inline-size: 100%; min-block-size: var(--control-h); padding: 7px 12px; border-radius: var(--radius-md); border: 1px solid var(--line-2); background: var(--surface); font-size: 14px; transition: border-color var(--dur-1), box-shadow var(--dur-1); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--focus); }
.input-lg { min-block-size: var(--control-h-lg); }
.select { appearance: none; padding-inline-end: 34px; background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%2385939a' stroke-width='1.6'%3E%3Cpath d='m3 4.5 3 3 3-3'/%3E%3C/svg%3E") no-repeat left 12px center; }
[dir="ltr"] .select { background-position: right 12px center; }
.textarea { min-block-size: 100px; resize: vertical; }
[aria-invalid="true"] { border-color: var(--danger) !important; }
.field-error { color: var(--danger); font-size: 12px; }
.addon { display: flex; }
.addon .input { border-start-end-radius: 0; border-end-end-radius: 0; }
.addon span { display: grid; place-items: center; padding-inline: 12px; border: 1px solid var(--line-2); border-inline-start: 0; border-start-end-radius: var(--radius-md); border-end-end-radius: var(--radius-md); background: var(--surface-2); color: var(--ink-2); font-size: 13px; white-space: nowrap; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.check input { accent-color: var(--brand); inline-size: 16px; block-size: 16px; margin-block-start: 4px; }

/* option (radio) cards */
.options { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); gap: var(--space-3); }
@media (max-width: 760px) { .options { grid-template-columns: minmax(0, 1fr); } }
.option { position: relative; display: grid; gap: 4px; padding: var(--space-4); border: 1px solid var(--line-2); border-radius: var(--radius-lg); cursor: pointer; background: var(--surface); transition: border-color var(--dur-1), background var(--dur-1); }
.option:hover { border-color: var(--brand-tint); }
.option input { position: absolute; opacity: 0; pointer-events: none; }
.option .o-icon { inline-size: 36px; block-size: 36px; border-radius: 9px; display: grid; place-items: center; background: var(--surface-2); color: var(--ink-2); margin-block-end: var(--space-2); }
.option b { font-weight: 600; }
.option span { font-size: 12.5px; color: var(--ink-3); }
.option .o-price { margin-block-start: var(--space-2); font-weight: 700; color: var(--ink); font-size: 15px; }
.option::after { content: ""; position: absolute; inset-block-start: 14px; inset-inline-end: 14px; inline-size: 18px; block-size: 18px; border-radius: 50%; border: 1.5px solid var(--line-2); background: var(--surface); }
.option:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); box-shadow: 0 0 0 1px var(--brand); }
.option:has(input:checked)::after { border-color: var(--brand); background: var(--brand) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='white' stroke-width='2'%3E%3Cpath d='m2.5 6.2 2.3 2.3 4.7-5'/%3E%3C/svg%3E") center no-repeat; }
.option:has(input:checked) .o-icon { background: var(--brand); color: var(--brand-ink); }
.option:has(input:focus-visible) { outline: 2px solid var(--brand); outline-offset: 2px; }

/* stepper & wizard */
.stepper { display: flex; list-style: none; margin: 0; padding: 0; gap: var(--space-2); counter-reset: step; }
.stepper li { flex: 1; display: flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 600; color: var(--ink-3); counter-increment: step; min-inline-size: 0; }
.stepper li::before { content: counter(step); flex: none; inline-size: 28px; block-size: 28px; border-radius: 50%; display: grid; place-items: center; border: 1.5px solid var(--line-2); background: var(--surface); font-size: 13px; }
:lang(fa) .stepper li::before { content: counter(step, persian); }
.stepper li:not(:last-child)::after { content: ""; flex: 1; block-size: 2px; background: var(--line); border-radius: 2px; min-inline-size: 12px; }
.stepper li[data-state="current"] { color: var(--ink); }
.stepper li[data-state="current"]::before { border-color: var(--brand); color: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); }
.stepper li[data-state="done"] { color: var(--brand); }
.stepper li[data-state="done"]::before { content: "✓"; background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.stepper li[data-state="done"]::after { background: var(--brand); }
@media (max-width: 700px) { .stepper li span { display: none; } .stepper li[data-state="current"] span { display: inline; } }
.wizard { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: var(--space-5); align-items: start; }
.wizard-aside { position: sticky; inset-block-start: 84px; }
@media (max-width: 1000px) { .wizard { grid-template-columns: minmax(0, 1fr); } .wizard-aside { position: static; } }
.wizard-foot { display: flex; justify-content: space-between; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-block-start: 1px solid var(--line); background: var(--surface-2); border-end-start-radius: var(--radius-lg); border-end-end-radius: var(--radius-lg); }
.summary { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 13.5px; }
.summary li { display: flex; justify-content: space-between; gap: var(--space-3); }
.summary li span { color: var(--ink-3); }
.summary .total { border-block-start: 1px dashed var(--line-2); padding-block-start: 10px; font-size: 15px; font-weight: 700; }

/* ------------------------------------------------------------ app: icon rail + sub-nav + main */
.app { display: grid; grid-template-columns: var(--rail-w) var(--subnav-w) minmax(0, 1fr); min-block-size: 100vh; background: var(--surface-2); }
.rail { background: var(--brand-deep); display: flex; flex-direction: column; align-items: center; gap: 6px; padding-block: 14px; position: sticky; inset-block-start: 0; block-size: 100vh; }
.rail .logo-mark { background: #fff; color: var(--brand-deep); margin-block-end: 14px; }
.rail a, .rail button { position: relative; inline-size: 42px; block-size: 42px; border-radius: 11px; display: grid; place-items: center; color: rgba(255,255,255,.66); border: 0; background: none; cursor: pointer; font-size: 18px; }
.rail a:hover, .rail button:hover { color: #fff; background: rgba(255,255,255,.08); }
.rail a[aria-current="true"] { color: var(--brand-deep); background: #fff; }
.rail .tip { position: absolute; inset-inline-start: calc(100% + 10px); inset-block-start: 50%; transform: translateY(-50%); background: var(--ink); color: #fff; padding: 5px 9px; border-radius: 6px; font-size: 12px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity var(--dur-1); z-index: 5; }
.rail a:hover .tip, .rail a:focus-visible .tip { opacity: 1; }
.rail .bottom { margin-block-start: auto; display: grid; gap: 6px; }
.subnav { background: var(--surface); border-inline-end: 1px solid var(--line); padding: var(--space-5) var(--space-3); position: sticky; inset-block-start: 0; block-size: 100vh; overflow: auto; }
.subnav-title { display: flex; align-items: center; gap: 10px; padding: 0 var(--space-3) var(--space-4); margin-block-end: var(--space-3); border-block-end: 1px solid var(--line); font-weight: 700; font-size: 15px; }
.subnav-title i { color: var(--brand); }
.subnav-group { font-size: 11.5px; font-weight: 600; color: var(--ink-3); padding: var(--space-4) var(--space-3) 6px; }
.subnav a, .subnav button.nav { display: flex; align-items: center; gap: 10px; inline-size: 100%; padding: 9px 12px; border-radius: var(--radius-md); color: var(--ink-2); font-size: 14px; border: 0; background: none; cursor: pointer; text-align: start; border-inline-start: 3px solid transparent; }
.subnav a:hover, .subnav button.nav:hover { background: var(--surface-2); color: var(--ink); }
.subnav [aria-selected="true"], .subnav [aria-current="page"] { background: var(--brand-soft); color: var(--brand-strong); font-weight: 600; border-inline-start-color: var(--brand); border-start-start-radius: 2px; border-end-start-radius: 2px; }
.subnav .count { margin-inline-start: auto; font-size: 12px; color: var(--ink-3); }
.app-main { min-inline-size: 0; }
.topbar { display: flex; align-items: center; gap: var(--space-3); padding: 0 var(--space-6); min-block-size: 60px; background: var(--surface); border-block-end: 1px solid var(--line); position: sticky; inset-block-start: 0; z-index: 20; }
.topbar .spacer { flex: 1; }
.crumbs { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-3); flex-wrap: wrap; }
.crumbs a { color: var(--ink-2); }
.crumbs [aria-current] { color: var(--ink); font-weight: 600; }
.topsearch { position: relative; inline-size: min(320px, 32vw); }
.topsearch i { position: absolute; inset-inline-start: 10px; inset-block-start: 50%; transform: translateY(-50%); color: var(--ink-3); }
.topsearch .input { padding-inline-start: 34px; background: var(--surface-2); }
.page { padding: var(--space-6); display: grid; gap: var(--space-5); }
.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-4); }
.page-head h1 { font-size: 22px; font-weight: 700; }
.page-head p { color: var(--ink-3); font-size: 13.5px; }
.app-menu-btn { display: none; }
@media (max-width: 1100px) { .app { grid-template-columns: var(--rail-w) minmax(0, 1fr); } .subnav { display: none; position: fixed; inset-block: 0; inset-inline-start: var(--rail-w); inline-size: var(--subnav-w); z-index: 60; box-shadow: var(--shadow-3); } .subnav[data-open] { display: block; } .app-menu-btn { display: inline-flex; } }
@media (max-width: 640px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  .rail { position: fixed; inset-block: auto 0; inset-inline: 0; block-size: 60px; flex-direction: row; justify-content: space-around; padding: 6px 10px; z-index: 50; }
  .rail .logo-mark, .rail .tip, .rail .bottom { display: none; }
  .subnav { inset-inline-start: 0; inset-block-end: 60px; }
  .app-main { padding-block-end: 70px; }
  .topbar { padding-inline: var(--space-4); }
  .topsearch { display: none; }
  .page { padding: var(--space-4); }
}

/* stats & data */
.stat { padding: var(--space-5); display: grid; gap: 6px; }
.stat-top { display: flex; justify-content: space-between; align-items: center; color: var(--ink-2); font-size: 13px; }
.stat-top i { inline-size: 32px; block-size: 32px; border-radius: 8px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); font-size: 16px; }
.stat-value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.trend { font-size: 12.5px; font-weight: 600; }
.trend.up { color: var(--success); } .trend.down { color: var(--danger); }
.table-scroll { position: relative; overflow-x: auto; }
.table { inline-size: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: start; font-weight: 600; font-size: 12.5px; color: var(--ink-3); background: var(--surface-2); padding: 10px 14px; white-space: nowrap; border-block-end: 1px solid var(--line); }
.table td { padding: 12px 14px; border-block-end: 1px solid var(--line); white-space: nowrap; }
.table tr:last-child td { border-block-end: 0; }
.table tbody tr:hover { background: var(--surface-2); }
.table th button { all: unset; cursor: pointer; }
.table th[aria-sort="ascending"] button::after { content: " ▲"; font-size: 9px; }
.table th[aria-sort="descending"] button::after { content: " ▼"; font-size: 9px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 600; background: var(--surface-3); color: var(--ink-2); }
.pill::before { content: ""; inline-size: 6px; block-size: 6px; border-radius: 50%; background: currentColor; }
.pill-ok { background: var(--success-soft); color: var(--success); }
.pill-warn { background: var(--warning-soft); color: var(--warning); }
.pill-bad { background: var(--danger-soft); color: var(--danger); }
.pill-info { background: var(--info-soft); color: var(--info); }
.pill-brand { background: var(--brand-soft); color: var(--brand-strong); }
.toolbar { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; padding: var(--space-3) var(--space-4); border-block-end: 1px solid var(--line); }
.tabs-line { display: flex; gap: var(--space-5); border-block-end: 1px solid var(--line); padding-inline: var(--space-5); overflow-x: auto; }
.tabs-line [role="tab"], .tabs-line button { border: 0; background: none; padding: 12px 0; margin-block-end: -1px; border-block-end: 2px solid transparent; color: var(--ink-2); font-weight: 600; font-size: 13.5px; cursor: pointer; white-space: nowrap; }
.tabs-line [aria-selected="true"], .tabs-line [aria-pressed="true"] { color: var(--brand); border-color: var(--brand); }
.track { list-style: none; margin: 0; padding: 0; position: relative; display: grid; gap: var(--space-4); }
.track li { position: relative; padding-inline-start: 28px; font-size: 13.5px; }
.track li::before { content: ""; position: absolute; inset-inline-start: 4px; inset-block-start: 5px; inline-size: 10px; block-size: 10px; border-radius: 50%; background: var(--surface); border: 2px solid var(--line-2); }
.track li:not(:last-child)::after { content: ""; position: absolute; inset-inline-start: 8px; inset-block-start: 18px; inset-block-end: -14px; inline-size: 2px; background: var(--line); }
.track li.done::before { background: var(--brand); border-color: var(--brand); }
.track li.done::after { background: var(--brand); }
.track li.now::before { border-color: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); }
.track time { display: block; font-size: 12px; color: var(--ink-3); }

/* overlays */
dialog.modal { border: 0; padding: 0; border-radius: var(--radius-lg); inline-size: min(520px, calc(100vw - 24px)); background: var(--surface); color: var(--ink); box-shadow: var(--shadow-3); }
dialog.modal::backdrop { background: var(--overlay); }
.menu { position: absolute; inset-inline-end: 0; inset-block-start: calc(100% + 6px); min-inline-size: 220px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-2); padding: 6px; display: none; z-index: 30; }
.menu[data-open] { display: block; }
.menu a, .menu button { display: flex; gap: 10px; align-items: center; inline-size: 100%; padding: 9px 10px; border: 0; background: none; color: var(--ink); border-radius: var(--radius-md); font-size: 13.5px; cursor: pointer; text-align: start; }
.menu a:hover, .menu button:hover { background: var(--surface-2); color: var(--ink); }
.rel { position: relative; }
.toast { background: var(--ink); color: #fff; padding: 12px 16px; border-radius: var(--radius-md); font-size: 13.5px; box-shadow: var(--shadow-3); border-inline-start: 4px solid var(--brand); animation: toast-in var(--dur-3) var(--ease); }
.toast[data-tone="success"] { border-inline-start-color: var(--success); }
.toast.is-out { opacity: 0; transition: opacity var(--dur-2); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* charts */
.tf-chart .c-grid { stroke: var(--chart-grid); }
.tf-chart .c-axis { fill: var(--chart-axis); font-size: 11px; font-family: var(--font-sans); }
.tf-chart .c-guide { stroke: var(--line-2); stroke-dasharray: 3 3; }
.tf-chart .c-track { stroke: var(--surface-3); }
.tf-chart .c-center { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; font-weight: 700; font-size: 20px; }
.chart-tip { background: var(--surface); color: var(--ink); border: 1px solid var(--line); box-shadow: var(--shadow-2); border-radius: var(--radius-md); padding: 8px 10px; font-size: 12px; display: grid; gap: 4px; }
.chart-tip span { display: flex; gap: 6px; align-items: center; }
.chart-tip i { inline-size: 8px; block-size: 8px; border-radius: 2px; }
.legend { display: flex; gap: var(--space-4); list-style: none; margin: 0; padding: 0; font-size: 12.5px; color: var(--ink-2); flex-wrap: wrap; }
.legend li { display: inline-flex; gap: 6px; align-items: center; }
.legend i { inline-size: 10px; block-size: 10px; border-radius: 3px; background: var(--c); }

/* footer */
.site-footer { background: var(--surface-2); border-block-start: 1px solid var(--line); padding-block: var(--space-9) var(--space-6); font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: var(--space-6); }
.footer-grid h4 { font-size: 13.5px; margin-block-end: var(--space-3); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-grid a { color: var(--ink-2); }
.footer-grid a:hover { color: var(--brand); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-bottom { margin-block-start: var(--space-8); padding-block-start: var(--space-5); border-block-start: 1px solid var(--line); display: flex; justify-content: space-between; gap: var(--space-4); color: var(--ink-3); flex-wrap: wrap; }