.guide-hero{padding:1.65rem 0 1rem;border-bottom:1px solid var(--c-line)}
.guide-hero .eyebrow{margin-bottom:.55rem}.guide-hero h1{max-width:54rem;margin-bottom:.4rem}.guide-hero p:last-child{max-width:48rem;margin:0;font-size:clamp(1rem,2vw,1.18rem)}
.guide-section{padding:1.5rem 0}.guide-section--warning{padding:.8rem 0}.guide-section--plate{padding:.75rem 0 0}.guide-section--steps{padding-top:clamp(1.25rem,4vw,2rem)}
.guide-warning{display:grid;gap:.75rem;padding:.85rem 1rem;border-left:3px solid var(--c-gold);background:rgba(255,255,255,.035);border-radius:var(--radius-sm)}
.guide-warning__copy{display:grid;gap:.25rem}.guide-warning h2{margin:0;font-size:.8rem;letter-spacing:.14em;color:var(--c-gold)}.guide-warning p{margin:0;max-width:65rem;font-size:.94rem}.compact-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:0}.compact-actions .button{min-height:2.55rem;padding:.65rem 1rem}
.plate-primer{padding:1.1rem}.plate-primer>h2{margin:0 0 .85rem;font-size:clamp(1.45rem,3vw,2rem)}.plate-primer__grid{display:grid;gap:.85rem}.plate-primer__visual{display:flex;align-items:center;justify-content:center;min-width:0}.plate-primer__visual img{display:block;width:100%;max-height:15rem;object-fit:contain}.plate-primer__details{display:grid;gap:.65rem;align-content:center}.face-labels{display:grid;grid-template-columns:1fr 1fr;gap:.55rem}.face-label{display:grid;gap:.1rem;padding:.65rem;text-align:center;border:1px solid var(--c-line);border-radius:var(--radius-sm)}.face-label strong{color:var(--c-gold);font-size:.78rem;letter-spacing:.08em}.principle-flow{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap;color:var(--c-gold);font-weight:700}.principle-flow span{padding:.45rem .55rem;border:1px solid var(--c-line);border-radius:999px}.binary-example{display:grid;gap:.4rem}.binary-example>span{color:var(--c-muted);font-size:.82rem}.binary-code{font-family:var(--font-mono);color:var(--c-gold-strong);letter-spacing:.1em}.bit-row{display:grid;grid-template-columns:repeat(11,1fr);gap:.2rem;max-width:25rem}.bit-dot{aspect-ratio:1;border:1px solid var(--c-line);border-radius:3px;background:#111}.bit-dot.is-marked{background:var(--c-gold)}.binary-key.binary-key--primer{margin:0}.binary-key.binary-key--primer strong{padding:.5rem .65rem;font-size:.84rem}
.guide-steps{display:grid;gap:1rem}.guide-step{padding:1.25rem}.step-label{color:var(--c-gold);font-family:var(--font-mono);font-weight:700}.guide-step h2{margin:.25rem 0 1rem}.step-layout{display:grid;gap:1.25rem}.step-copy p,.step-copy li{color:var(--c-muted)}.step-copy ul{padding-left:1.2rem}.step-note{padding:.8rem;border-left:2px solid var(--c-gold);background:rgba(255,255,255,.025)}.binary-key{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0}.binary-key strong{padding:.65rem .85rem;border:1px solid var(--c-gold);border-radius:var(--radius-sm)}.step-media{display:flex;align-items:center;justify-content:center;min-width:0}.step-media img{width:100%;max-height:28rem;object-fit:contain;border-radius:var(--radius-sm)}
.word-converter{max-width:32rem}.marking-tool{margin-top:1rem}.marking-form{display:grid;gap:.75rem}.marking-form label{display:grid;gap:.35rem;color:var(--c-muted)}.marking-form input{width:100%;min-height:3rem;padding:.7rem;background:var(--c-graphite);border:1px solid var(--c-line);border-radius:var(--radius-sm);color:var(--c-text)}.marking-message{min-height:1.5rem;color:var(--c-gold);font-family:var(--font-mono)}.marking-message.is-error{color:var(--c-danger);font-family:var(--font-sans)}.plate-stage{overflow:hidden}.plate-stage svg{display:block;width:100%;height:auto;max-height:34rem}.visualizer-link{margin-top:1rem;color:var(--c-muted)}.visualizer-link a{font-weight:700}
.useful-links{display:grid;grid-template-columns:1fr;gap:.55rem}.useful-links a{padding:.85rem;border:1px solid var(--c-line);border-radius:var(--radius-sm);text-decoration:none}.visualizer-wrap{padding:1.25rem}.word-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem}.word-grid input{width:100%;min-height:2.8rem;padding:.6rem;background:var(--c-graphite);border:1px solid var(--c-line);border-radius:var(--radius-sm);color:var(--c-text)}.demo-controls{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1rem}.demo-message{min-height:1.5rem;color:var(--c-gold)}
@media(min-width:700px){.guide-hero{padding:2.25rem 0 1.35rem}.guide-section{padding:2.25rem 0}.guide-section--warning{padding:1rem 0}.guide-section--plate{padding:1rem 0 0}.guide-section--steps{padding-top:clamp(1.25rem,4vw,2rem)}.guide-warning{grid-template-columns:minmax(0,1fr) auto;align-items:center}.plate-primer{padding:1.25rem}.plate-primer__grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:1.5rem}.plate-primer__visual img{max-height:21rem}.principle{grid-template-columns:1fr 1fr;align-items:center}.step-layout{grid-template-columns:minmax(0,1fr) minmax(20rem,.85fr);align-items:center}.marking-form{grid-template-columns:.6fr 1.4fr auto;align-items:end}.word-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.useful-links{grid-template-columns:repeat(5,1fr)}}
.assembly-dialog{width:min(calc(100% - 2rem),58rem);max-height:calc(100dvh - 2rem);padding:0;border:1px solid var(--c-line);border-radius:var(--radius-lg);background:var(--c-panel);color:var(--c-text);box-shadow:var(--shadow);overflow:auto}
.assembly-dialog::backdrop{background:rgba(0,0,0,.82);backdrop-filter:blur(4px)}
.assembly-dialog__inner{position:relative;display:grid;gap:1rem;padding:clamp(3.75rem,7vw,5rem) clamp(1rem,4vw,2rem) clamp(1rem,4vw,2rem)}
.assembly-dialog__close{position:absolute;z-index:1;top:.75rem;right:.75rem;display:grid;place-items:center;width:3rem;height:3rem;padding:0;border:1px solid var(--c-gold);border-radius:50%;background:var(--c-ink);color:var(--c-text);font-size:2rem;line-height:1}
.assembly-dialog__image{width:100%;max-height:calc(100dvh - 10rem);margin:auto;object-fit:contain}
.assembly-dialog__close-action{justify-self:center;min-width:8rem}
body.assembly-dialog-open{overflow:hidden}
@media(max-width:699px){.assembly-dialog{width:calc(100% - 1rem);max-height:calc(100dvh - 1rem)}.assembly-dialog__inner{padding-inline:.75rem}.assembly-dialog__image{max-height:calc(100dvh - 11rem)}}


.plate-primer__teaching{margin:0;color:var(--c-muted);font-size:.92rem}.binary-example__heading{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem;color:var(--c-muted);font-size:.82rem}.binary-example__word{font-size:1.05rem;letter-spacing:.06em}.binary-example__position{margin:0;color:var(--c-muted);font-size:.88rem}.bit-row{grid-template-columns:repeat(11,minmax(0,1fr));width:100%}.bit-dot{transition:background-color .12s ease}.binary-example__controls{display:flex;justify-content:space-between;gap:.55rem}.binary-example__controls button{min-height:2.5rem;padding:.45rem .7rem;border:1px solid var(--c-line);border-radius:var(--radius-sm);background:transparent;color:var(--c-text);cursor:pointer}.binary-example__controls button:disabled{opacity:.4;cursor:not-allowed}.binary-example__reverse,.binary-example__essential{margin:.15rem 0 0;font-size:.86rem}.binary-example__reverse{color:var(--c-muted)}.binary-example__essential{color:var(--c-gold);font-weight:700}.binary-example__link{font-size:.86rem;font-weight:700}

/* Keep the teaching sequence concise while allowing natural wrapping on narrow screens. */
.principle-flow-wrap{display:grid;gap:.35rem}.principle-flow-wrap p{margin:0;color:var(--c-gold);font-size:.72rem;font-weight:700;letter-spacing:.08em}.principle-flow{align-items:stretch}.principle-flow span{display:flex;align-items:center;text-align:center}.binary-example__heading{display:grid;justify-content:stretch;gap:.15rem}.binary-example__count{display:block}.binary-example__word{display:block;color:var(--c-text);font-size:1.18rem}.binary-example__controls{position:relative;z-index:1}.binary-example__controls button{position:relative;pointer-events:auto;touch-action:manipulation}.guide-steps__intro h2{margin:0;font-size:clamp(1.65rem,4vw,2.65rem)}
@media(max-width:699px){.principle-flow{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:.35rem}.principle-flow span:last-child{grid-column:1/-1;justify-content:center}.principle-flow b:nth-of-type(2){display:none}.binary-example__controls button{flex:1}}

/* Editorial bridge from the BIP39 explanation into the practical guide. */
.guide-steps__intro{display:grid;gap:clamp(1.25rem,4vw,2rem)}.guide-steps__bridge{margin:0;color:var(--c-muted);font-size:clamp(.98rem,2vw,1.1rem);font-weight:400}.guide-step h3{margin:0 0 .4rem;color:var(--c-text);font-size:clamp(1.05rem,2vw,1.25rem)}.step-copy>.word-converter{margin-top:1rem}.step-copy>.compact-actions{margin-top:.75rem}.step-guidance{display:grid;gap:.25rem;margin-top:1rem;padding-top:.85rem;border-top:1px solid var(--c-line)}.step-guidance p{margin:0;font-size:.92rem}
@media(max-width:699px){.guide-steps__bridge{font-size:.98rem}.principle-flow{display:grid;grid-template-columns:minmax(0,17rem);justify-content:center;gap:.25rem}.principle-flow span,.principle-flow span:last-child{grid-column:auto;justify-content:center;width:100%;min-height:2.45rem;padding:.4rem .5rem;white-space:nowrap}.principle-flow b,.principle-flow b:nth-of-type(2){display:grid;place-items:center;height:.8rem;font-size:0;line-height:1}.principle-flow b::before{content:"↓";color:var(--c-gold);font-size:.9rem}.binary-example__controls button{flex:1}}