/* ==========================================================================
   Brand Kit — editorial, system-forward
   ========================================================================== */

body.brandkit {
    background: #000;
    color: rgba(255, 255, 255, 0.92);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
}

/* Reuse docs-topbar styles, but also define needed fallbacks here */
.docs-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.docs-topbar-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0 24px;
}

.docs-logo img {
    height: 26px;
    display: block;
}

.docs-crumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.55);
    text-transform: uppercase;
    padding-left: 20px;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.docs-crumb .sep {
    color: rgba(255, 255, 255, 0.25);
}

.docs-crumb #crumb-section {
    color: var(--fg);
}

.docs-topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 20px;
}

.docs-topbar-link {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

.docs-topbar-link:hover {
    color: var(--mint);
}

.docs-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: transparent;
    color: var(--fg);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all .15s;
}

.docs-cta:hover {
    border-color: var(--mint);
    color: var(--mint);
}

/* ---- Hero ---- */
.bk-hero {
    position: relative;
    padding: 120px 0 80px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.bk-hero-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    position: relative;
    padding: 0 24px;
    z-index: 2;
}

.bk-kicker {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 24px;
}

.bk-kicker .dash {
    width: 24px;
    height: 1px;
    background: var(--mint);
}

.bk-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(48px, 7vw, 96px);
    line-height: 1.02;
    letter-spacing: -0.035em;
    margin: 0 0 32px;
}

.bk-title em {
    font-style: normal;
    color: var(--mint);
}

.bk-lede {
    max-width: 640px;
    font-size: 18px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.7);
    margin: 0 0 40px;
}

.bk-jump {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.bk-jump a {
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    transition: all .15s;
}

.bk-jump a:hover {
    border-color: var(--mint);
    color: var(--mint);
}

.bk-hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(112, 255, 186, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(112, 255, 186, 0.04) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 80%);
    pointer-events: none;
}

/* ---- Section shell ---- */
.bk-main {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

.bk-sec {
    padding: 120px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    scroll-margin-top: 80px;
}

.bk-sec:last-child {
    border-bottom: none;
}

.bk-sec-head {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 32px;
    max-width: 1100px;
    margin-bottom: 64px;
    align-items: start;
}

.bk-sec-num {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--mint);
    padding-top: 14px;
    border-top: 1px solid var(--mint);
    grid-column: 1;
    grid-row: 1 / span 2;
}

.bk-sec-head h2 {
    grid-column: 2;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(36px, 4vw, 56px);
    line-height: 1.05;
    letter-spacing: -0.025em;
    margin: 0 0 20px;
}

.bk-sec-head p {
    grid-column: 2;
    color: rgba(255, 255, 255, 0.7);
    font-size: 17px;
    max-width: 64ch;
    line-height: 1.55;
    margin: 0;
}

/* ==== LOGO ==== */
.bk-logo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.bk-logo-card {
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    transition: border-color .15s;
    margin: 0;
}

.bk-logo-card:hover {
    border-color: rgba(112, 255, 186, 0.3);
}

.bk-logo-canvas {
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    position: relative;
}

.bk-logo-card.dark .bk-logo-canvas {
    background: #000;
}

.bk-logo-card.light .bk-logo-canvas {
    background: #fff;
}

.bk-logo-card.primary .bk-logo-canvas {
    background: radial-gradient(ellipse at center, rgba(112, 255, 186, 0.08), transparent 60%),
    #000;
}

.bk-logo-canvas.sq {
    padding: 60px;
}

.bk-logo-canvas img {
    max-width: 70%;
    max-height: 60%;
    object-fit: contain;
    display: block;
}

.bk-logo-card img.logo-mint {
    filter: brightness(0) saturate(100%) invert(87%) sepia(18%) saturate(1061%) hue-rotate(96deg) brightness(102%) contrast(102%);
}

.bk-logo-card img.logo-white {
    filter: brightness(0) invert(1);
}

.bk-logo-card img.logo-black {
    filter: brightness(0);
}

.bk-logo-card figcaption {
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6px 16px;
    align-items: center;
    background: rgba(255, 255, 255, 0.015);
}

.bk-logo-card figcaption .name {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 15px;
}

.bk-logo-card figcaption .meta {
    grid-column: 1 / -1;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

.bk-logo-card .actions {
    grid-row: 1;
    grid-column: 2;
    display: flex;
    gap: 10px;
}

.bk-logo-card .actions a {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--mint);
    padding: 5px 10px;
    border: 1px solid rgba(112, 255, 186, 0.25);
    border-radius: 6px;
    transition: all .15s;
}

.bk-logo-card .actions a:hover {
    background: var(--mint);
    color: #000;
    border-color: var(--mint);
}

/* Rules (clear space + min size) */
.bk-rule-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.bk-rule {
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.01);
}

.bk-rule-kicker {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 20px;
}

.bk-rule-viz {
    height: 200px;
    background: #000;
    border: 1px dashed rgba(112, 255, 186, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.bk-rule p {
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.55;
    margin: 0;
}

/* clearspace viz */
.cs-frame {
    position: relative;
    padding: 32px;
    display: flex;
    align-items: center;
}

.cs-frame img {
    height: 36px;
    display: block;
    filter: brightness(0) saturate(100%) invert(87%) sepia(18%) saturate(1061%) hue-rotate(96deg) brightness(102%) contrast(102%);
}

.cs-n, .cs-top, .cs-bot {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    color: rgba(112, 255, 186, 0.15);
    line-height: 1;
}

.cs-top {
    position: absolute;
    top: 2px;
    left: 50%;
    transform: translateX(-50%);
}

.cs-bot {
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
}

/* size viz */
.size-viz {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px 24px;
    justify-content: center;
}

.size-row {
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
}

.size-row img {
    filter: brightness(0) saturate(100%) invert(87%) sepia(18%) saturate(1061%) hue-rotate(96deg) brightness(102%) contrast(102%);
}

.size-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

/* do/dont */
.bk-dodont {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.dd {
    padding: 28px 32px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.dd.good {
    border-color: rgba(112, 255, 186, 0.2);
    background: rgba(112, 255, 186, 0.03);
}

.dd.bad {
    border-color: rgba(255, 100, 100, 0.15);
    background: rgba(255, 100, 100, 0.02);
}

.dd-kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.dd.good .dd-kicker {
    color: var(--mint);
}

.dd.bad .dd-kicker {
    color: #ff8888;
}

.dd ul {
    margin: 0;
    padding-left: 18px;
}

.dd li {
    margin-bottom: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.dd.good li::marker {
    content: "✓ ";
    color: var(--mint);
}

.dd.bad li::marker {
    content: "✗ ";
    color: #ff8888;
}

/* ==== COLOR ==== */
.bk-color-hero {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.swatch-lg {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 40px;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.swatch-lg.mint {
    background: #70FFBA;
    color: #000;
}

.swatch-lg.ink {
    background: #000;
    color: var(--mint);
    border-color: rgba(112, 255, 186, 0.2);
}

.swatch-lg .s-label .name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 36px;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 8px;
}

.swatch-lg .s-label .role {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.65;
}

.swatch-lg .s-values {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
}

.swatch-lg .s-values > div {
    display: flex;
    align-items: center;
    gap: 12px;
}

.swatch-lg .s-values span {
    width: 60px;
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0.55;
}

.swatch-lg .s-values code {
    font-family: var(--font-mono);
    cursor: pointer;
    transition: opacity .15s;
}

.swatch-lg .s-values code:hover {
    opacity: 0.7;
}

.swatch-lg.mint .s-values code {
    color: #000;
}

.swatch-lg.ink .s-values code {
    color: var(--mint);
}

.bk-color-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

.sw-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    overflow: hidden;
    padding: 0;
}

.sw-chip {
    height: 96px;
    display: block;
}

.sw-meta {
    padding: 14px 16px 4px;
}

.sw-meta .nm {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.sw-meta code {
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
}

.sw-meta code:hover {
    color: var(--mint);
}

.sw-use {
    padding: 8px 16px 14px;
    font-size: 11.5px;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.5);
}

/* color pairing proofs */
.bk-pair-rule {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.bk-pair-sample {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    text-align: center;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 15px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.bk-pair-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 10px;
}

.bk-pair-label .pass {
    color: var(--mint);
}

.bk-pair-label .fail {
    color: #ff8888;
}

/* ==== TYPOGRAPHY ==== */
.bk-type-stack {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 48px;
}

.bk-type-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 40px;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
    align-items: start;
    background: rgba(255, 255, 255, 0.01);
}

.tc-head .tc-role {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 10px;
}

.tc-head .tc-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 28px;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.tc-head .tc-meta {
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

.tc-sample {
    padding-bottom: 24px;
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.tc-sample.display {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 56px;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.tc-sample.body {
    font-family: var(--font-body);
    font-size: 20px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.85);
    max-width: 40em;
}

.tc-sample.mono {
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1.7;
    color: var(--mint);
}

.tc-scale {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 40px;
}

.tc-scale > div {
    display: flex;
    align-items: baseline;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    padding-bottom: 6px;
}

.tc-scale > div span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.45);
    width: 28px;
}

.bk-type-rules {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.tr {
    padding: 20px 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
}

.tr-k {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 10px;
}

.tr-v {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

/* ==== VOICE ==== */
.bk-voice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.vcol {
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.01);
}

.vcol-h {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 20px;
}

.v-pos, .v-neg {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.v-pos li, .v-neg li {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.75);
    padding-left: 24px;
    position: relative;
}

.v-pos li::before {
    content: "+";
    color: var(--mint);
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-mono);
    font-weight: 600;
}

.v-neg li::before {
    content: "−";
    color: #ff8888;
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-mono);
    font-weight: 600;
}

.bk-voice-pairs {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.vp {
    display: grid;
    grid-template-columns: 1fr 40px 1fr;
    gap: 16px;
    align-items: center;
    padding: 18px 24px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.01);
}

.vp-bad {
    font-size: 14px;
    color: rgba(255, 136, 136, 0.85);
    font-style: italic;
    text-decoration: line-through;
    text-decoration-color: rgba(255, 136, 136, 0.5);
    text-decoration-thickness: 1px;
}

.vp-arrow {
    text-align: center;
    font-family: var(--font-mono);
    color: rgba(255, 255, 255, 0.3);
}

.vp-good {
    font-size: 14px;
    color: var(--mint);
    font-weight: 500;
}

.bk-naming {
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
}

.nm-h {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 20px;
}

.bk-naming table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

.bk-naming td {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.75);
    vertical-align: top;
}

.bk-naming td:first-child {
    width: 140px;
    color: var(--fg);
}

.bk-naming tr:last-child td {
    border-bottom: none;
}

/* ==== USAGE ==== */
.bk-perm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.perm {
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
}

.perm-k {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 20px;
}

.perm:nth-child(2) .perm-k {
    color: #ff8888;
}

.perm ul {
    margin: 0;
    padding-left: 18px;
    list-style: disc;
}

.perm li {
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    margin-bottom: 10px;
}

.perm li::marker {
    color: rgba(255, 255, 255, 0.35);
}

.bk-contact {
    padding: 24px 32px;
    border: 1px solid rgba(112, 255, 186, 0.2);
    background: rgba(112, 255, 186, 0.03);
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.bc-k {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
}

.bc-v {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
}

.bc-v a {
    color: var(--mint);
    border-bottom: 1px solid rgba(112, 255, 186, 0.3);
}

/* ==== DOWNLOADS ==== */
.bk-dl-table {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 20px;
}

.bk-dl-row {
    display: grid;
    grid-template-columns: 1.8fr 90px 120px 140px;
    gap: 20px;
    padding: 18px 24px;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 13.5px;
}

.bk-dl-row:last-child {
    border-bottom: none;
}

.bk-dl-row.head {
    background: rgba(255, 255, 255, 0.02);
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    padding: 12px 24px;
}

.bk-dl-name {
    display: flex;
    align-items: center;
    gap: 14px;
}

.bk-dl-name .n {
    font-weight: 600;
    margin-bottom: 2px;
}

.bk-dl-name .d {
    font-size: 11.5px;
    color: rgba(255, 255, 255, 0.5);
}

.bk-dl-thumb {
    width: 56px;
    height: 56px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bk-dl-thumb.dark {
    background: #000;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.bk-dl-thumb.dark img {
    filter: brightness(0) saturate(100%) invert(87%) sepia(18%) saturate(1061%) hue-rotate(96deg) brightness(102%) contrast(102%);
}

.bk-dl-thumb.swatch-dot {
    background: conic-gradient(from 0deg, #70FFBA, #000, #FFAE0B, #fff, #70FFBA);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.ta-r {
    text-align: right;
}

.bk-dl-btn {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: transparent;
    color: var(--fg);
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: all .15s;
}

.bk-dl-btn:hover {
    background: var(--mint);
    color: #000;
    border-color: var(--mint);
}

.bk-tokens {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    overflow: hidden;
}

.bk-tokens summary {
    padding: 16px 24px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    list-style: none;
}

.bk-tokens summary::-webkit-details-marker {
    display: none;
}

.bk-tokens summary::before {
    content: "▸";
    display: inline-block;
    margin-right: 10px;
    color: var(--mint);
    transition: transform .2s;
}

.bk-tokens[open] summary::before {
    transform: rotate(90deg);
}

.bk-tokens pre {
    margin: 0;
    padding: 20px 24px;
    background: #050505;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--mint);
    overflow-x: auto;
    line-height: 1.6;
}

/* ==== FOOTER ==== */
.bk-footer {
    max-width: var(--maxw);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 64px 24px 32px;
    margin: 40px auto 0;
}

.bk-footer-inner {
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: 1.4fr auto;
    gap: 48px;
}

.bk-footer-inner .double-col {
    display: grid;
    grid-template-columns: repeat(2, minmax(140px, auto));
    gap: 48px;
}

.bk-footer .col p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13.5px;
    max-width: 32ch;
    margin: 0;
}

.bk-footer .col .h {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 14px;
}

.bk-footer .col a {
    display: block;
    padding: 5px 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13.5px;
}

.bk-footer .col a:hover {
    color: var(--mint);
}

.bk-footer-bot {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
}

/* ==== TOAST ==== */
.bk-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 10px 18px;
    background: var(--mint);
    color: #000;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(112, 255, 186, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
    z-index: 100;
}

.bk-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ==== Responsive ==== */
@media (max-width: 1024px) {
    .bk-logo-grid {
        grid-template-columns: 1fr 1fr;
    }

    .bk-type-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 28px;
    }

    .tc-sample.display {
        font-size: 40px;
    }

    .bk-type-rules {
        grid-template-columns: 1fr;
    }

    .bk-color-hero {
        grid-template-columns: 1fr;
    }

    .bk-color-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .bk-pair-rule {
        grid-template-columns: repeat(2, 1fr);
    }

    .bk-dl-row {
        grid-template-columns: 1fr 60px 100px 110px;
        padding: 14px 18px;
        gap: 14px;
    }
}

@media (max-width: 720px) {
    .docs-topbar-actions .docs-topbar-link {
        display: none;
    }

    .docs-crumb {
        display: none;
    }

    .bk-hero {
        padding: 72px 0 60px;
    }

    .bk-hero-inner {
        padding: 0 20px;
    }

    .bk-sec {
        padding: 72px 0;
    }

    .bk-sec-head {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 40px;
    }

    .bk-sec-num {
        border-top: none;
        padding-top: 0;
    }

    .bk-logo-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .bk-logo-canvas {
        height: 180px;
        padding: 28px;
    }

    .bk-logo-card figcaption {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .bk-logo-card .actions {
        grid-row: auto;
        grid-column: auto;
        margin-top: 8px;
    }

    .bk-rule-grid, .bk-dodont {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .bk-color-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .bk-pair-rule {
        grid-template-columns: 1fr 1fr;
    }

    .bk-voice-grid, .bk-perm-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .vp {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .vp-arrow {
        display: none;
    }

    .bk-dl-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .bk-dl-row.head {
        display: none;
    }

    .bk-dl-row > *:not(.bk-dl-name) {
        font-size: 11.5px;
        color: rgba(255, 255, 255, 0.5);
    }

    .ta-r {
        text-align: left;
    }

    .bk-footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .bk-footer-inner .double-col {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .bk-footer-bot {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
}