/* Ryvakon — Dynamic Sidebar Flow · Layout #79 */
:root {
    --rv-bg: #0a0e12;
    --rv-bg-elevated: #111820;
    --rv-bg-soft: #161d27;
    --rv-surface: #1a222d;
    --rv-text: #e8e4dc;
    --rv-text-muted: #8a939e;
    --rv-teal: #3d8b8b;
    --rv-teal-bright: #4fa8a8;
    --rv-teal-dim: rgba(61, 139, 139, 0.15);
    --rv-border: rgba(232, 228, 220, 0.08);
    --rv-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
    --rv-font-serif: 'DM Serif Display', Georgia, serif;
    --rv-font-sans: 'Outfit', system-ui, sans-serif;
    --rv-font-mono: 'IBM Plex Mono', monospace;
    --rv-sidebar-w: 220px;
    --rv-spine-h: 64px;
    --rv-radius: 2px;
    --rv-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="light"] {
    --rv-bg: #f4f1eb;
    --rv-bg-elevated: #ffffff;
    --rv-bg-soft: #ebe6dd;
    --rv-surface: #ffffff;
    --rv-text: #0f1419;
    --rv-text-muted: #5c6570;
    --rv-teal-dim: rgba(61, 139, 139, 0.12);
    --rv-border: rgba(15, 20, 25, 0.1);
    --rv-shadow: 0 20px 48px rgba(15, 20, 25, 0.12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--rv-font-sans);
    font-size: 16px;
    line-height: 1.65;
    color: var(--rv-text);
    background: var(--rv-bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--rv-teal-bright); text-decoration: none; transition: color 0.25s var(--rv-ease); }
a:hover { color: var(--rv-teal); }
button { font-family: inherit; cursor: pointer; }
address { font-style: normal; }

.visually-hidden, .skip-link:not(:focus) {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.skip-link:focus {
    position: fixed; top: 12px; left: 12px; z-index: 9999;
    padding: 10px 16px; background: var(--rv-teal); color: #fff;
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border: 1px solid transparent; border-radius: var(--rv-radius);
    font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase;
    transition: all 0.3s var(--rv-ease);
}
.btn-teal { background: var(--rv-teal); color: #fff; }
.btn-teal:hover { background: var(--rv-teal-bright); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--rv-border); color: var(--rv-text); }
.btn-ghost:hover { border-color: var(--rv-teal); color: var(--rv-teal-bright); }
.btn-sm { padding: 8px 16px; font-size: 0.75rem; }
.btn-lg { padding: 16px 32px; }
.btn-full { width: 100%; }

.flow-tag {
    font-family: var(--rv-font-mono); font-size: 0.6875rem; letter-spacing: 0.14em;
    text-transform: uppercase; color: var(--rv-teal); margin: 0 0 1rem;
}

/* Spine Header */
.rv-spine {
    position: fixed; top: 0; left: 0; right: 0; z-index: 900;
    height: var(--rv-spine-h);
    background: rgba(10, 14, 18, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--rv-border);
    transition: transform 0.35s var(--rv-ease);
}
[data-theme="light"] .rv-spine { background: rgba(244, 241, 235, 0.92); }
.rv-spine.is-hidden { transform: translateY(-100%); }
.rv-spine__bar {
    display: flex; align-items: center; justify-content: space-between;
    max-width: 100%; height: 100%; padding: 0 clamp(16px, 3vw, 40px);
}
.page-flow .rv-spine__bar { padding-left: calc(var(--rv-sidebar-w) + clamp(16px, 3vw, 40px)); }
.rv-spine__brand { display: flex; align-items: center; gap: 10px; color: var(--rv-text); }
.rv-spine__brand:hover { color: var(--rv-teal-bright); }
.rv-spine__glyph {
    font-family: var(--rv-font-serif); font-size: 1.25rem; font-style: italic;
    color: var(--rv-teal);
}
.rv-spine__word { font-size: 0.875rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; }
.rv-spine__links { display: flex; gap: clamp(16px, 2.5vw, 32px); }
.rv-spine__link {
    font-size: 0.75rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--rv-text-muted); transition: color 0.25s;
}
.rv-spine__link:hover, .rv-spine__link.is-active { color: var(--rv-text); }
.rv-spine__actions { display: flex; align-items: center; gap: 8px; }
.rv-spine__icon {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border: none; background: transparent;
    color: var(--rv-text-muted); border-radius: var(--rv-radius); transition: all 0.25s;
}
.rv-spine__icon:hover { color: var(--rv-teal); background: var(--rv-teal-dim); }
.rv-spine__icon--cart { position: relative; color: var(--rv-text); }
.rv-cart-badge {
    position: absolute; top: 4px; right: 4px; min-width: 16px; height: 16px;
    padding: 0 4px; font-size: 0.625rem; font-weight: 600; line-height: 16px;
    text-align: center; background: var(--rv-teal); color: #fff; border-radius: 8px;
}
.rv-spine__toggle {
    display: none; flex-direction: column; justify-content: center; gap: 6px;
    width: 40px; height: 40px; border: none; background: transparent; padding: 8px;
}
.rv-spine__toggle span {
    display: block; width: 100%; height: 1.5px; background: var(--rv-text);
    transition: transform 0.3s var(--rv-ease);
}
.rv-spine__toggle.is-open span:first-child { transform: translateY(3.75px) rotate(45deg); }
.rv-spine__toggle.is-open span:last-child { transform: translateY(-3.75px) rotate(-45deg); }

/* Dynamic Sidebar */
.flow-sidebar {
    position: fixed; top: var(--rv-spine-h); left: 0; bottom: 0; z-index: 800;
    width: var(--rv-sidebar-w); padding: 24px 0;
    background: var(--rv-bg-elevated); border-right: 1px solid var(--rv-border);
    display: flex; flex-direction: column;
}
.flow-sidebar__head {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 20px 20px; border-bottom: 1px solid var(--rv-border);
}
.flow-sidebar__label {
    font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.2em;
    text-transform: uppercase; color: var(--rv-teal);
}
.flow-sidebar__progress {
    font-family: var(--rv-font-mono); font-size: 0.625rem; color: var(--rv-text-muted);
}
.flow-sidebar__nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.flow-sidebar__chapter {
    display: flex; align-items: flex-start; gap: 10px; width: 100%;
    padding: 10px 20px; border: none; background: transparent; text-align: left;
    color: var(--rv-text-muted); transition: all 0.3s var(--rv-ease); position: relative;
}
.flow-sidebar__chapter:hover { color: var(--rv-text); background: var(--rv-teal-dim); }
.flow-sidebar__chapter.is-active { color: var(--rv-text); }
.flow-sidebar__chapter.is-active .flow-sidebar__num { color: var(--rv-teal); }
.flow-sidebar__num {
    font-family: var(--rv-font-mono); font-size: 0.6875rem; min-width: 20px;
    transition: color 0.3s;
}
.flow-sidebar__meta { display: flex; flex-direction: column; gap: 2px; }
.flow-sidebar__meta em {
    font-style: normal; font-size: 0.6875rem; font-weight: 500;
    letter-spacing: 0.04em; text-transform: uppercase;
}
.flow-sidebar__meta span { font-size: 0.625rem; opacity: 0.6; }
.flow-sidebar__tick {
    position: absolute; left: 0; top: 50%; width: 2px; height: 0;
    background: var(--rv-teal); transform: translateY(-50%);
    transition: height 0.35s var(--rv-ease);
}
.flow-sidebar__chapter.is-active .flow-sidebar__tick { height: 24px; }
.flow-sidebar__rail {
    position: absolute; right: 0; top: 80px; bottom: 24px; width: 2px;
    background: var(--rv-border);
}
.flow-sidebar__rail-fill {
    display: block; width: 100%; height: 0; background: var(--rv-teal);
    transition: height 0.2s ease-out;
}

/* Main */
.rv-main { padding-top: var(--rv-spine-h); min-height: 100vh; }
.rv-main--flow { margin-left: var(--rv-sidebar-w); }

/* Flow Universe */
.flow-universe { overflow: hidden; }
.flow-chapter {
    position: relative; padding: clamp(48px, 8vw, 120px) clamp(24px, 5vw, 80px);
    border-bottom: 1px solid var(--rv-border);
}
.flow-chapter::before {
    content: attr(data-chapter);
    position: absolute; top: clamp(24px, 4vw, 48px); right: clamp(24px, 5vw, 80px);
    font-family: var(--rv-font-serif); font-size: clamp(4rem, 12vw, 10rem);
    line-height: 1; color: var(--rv-border); opacity: 0.4; pointer-events: none;
}

/* Chapter 01 Gate */
.gate-layout {
    display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px);
    align-items: center; max-width: 1200px;
}
.gate-headline { margin: 0 0 1.5rem; }
.gate-headline__kanji {
    display: block; font-family: var(--rv-font-serif); font-size: clamp(5rem, 14vw, 9rem);
    line-height: 0.85; color: var(--rv-teal); opacity: 0.25; margin-bottom: -1.5rem;
}
.gate-headline__line {
    font-family: var(--rv-font-serif); font-size: clamp(1.75rem, 4vw, 3rem);
    line-height: 1.2; font-weight: 400;
}
.gate-headline__line em { font-style: italic; color: var(--rv-teal-bright); }
.gate-lead { color: var(--rv-text-muted); max-width: 42ch; margin-bottom: 2rem; }
.gate-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 2.5rem; }
.gate-micro { display: flex; gap: 32px; margin: 0; }
.gate-micro dt {
    font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--rv-teal); margin-bottom: 4px;
}
.gate-micro dd { margin: 0; font-size: 0.875rem; }
.gate-window {
    position: relative; clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
    overflow: hidden;
}
.gate-window img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.gate-window__cut {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(61,139,139,0.15));
    pointer-events: none;
}
.gate-window__float {
    position: absolute; bottom: 16px; right: 16px; list-style: none; margin: 0; padding: 0;
    display: flex; flex-direction: column; gap: 4px;
}
.gate-window__float li {
    font-family: var(--rv-font-mono); font-size: 0.625rem; padding: 4px 8px;
    background: rgba(10,14,18,0.75); backdrop-filter: blur(8px);
}

/* Chapter 02 Manifesto Ribbon */
.manifesto-head__title {
    font-family: var(--rv-font-serif); font-size: clamp(1.5rem, 3vw, 2.25rem);
    max-width: 20ch; margin: 0 0 2rem;
}
.manifesto-head__title em { font-style: italic; color: var(--rv-teal); }
.manifesto-ribbon { overflow-x: auto; margin: 0 -24px; padding: 0 24px 16px; scrollbar-width: thin; }
.manifesto-ribbon__track { display: flex; gap: 20px; width: max-content; padding-right: 24px; }
.manifesto-card {
    flex: 0 0 min(320px, 80vw); padding: 28px;
    background: var(--rv-bg-elevated); border: 1px solid var(--rv-border);
    clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}
.manifesto-card__num {
    font-family: var(--rv-font-mono); font-size: 0.6875rem; color: var(--rv-teal);
}
.manifesto-card h3 { font-family: var(--rv-font-serif); font-size: 1.25rem; margin: 12px 0; }
.manifesto-card p { color: var(--rv-text-muted); font-size: 0.9375rem; margin: 0; }
.manifesto-card--quote blockquote { margin: 0; }
.manifesto-card--quote p { font-family: var(--rv-font-serif); font-size: 1.125rem; color: var(--rv-text); }
.manifesto-card--quote footer { margin-top: 16px; font-size: 0.75rem; color: var(--rv-text-muted); }
.manifesto-card--visual { padding: 0; overflow: hidden; }
.manifesto-card--visual img { width: 100%; height: 180px; object-fit: cover; }
.manifesto-card--visual p {
    padding: 12px 16px; font-family: var(--rv-font-mono); font-size: 0.6875rem;
    letter-spacing: 0.08em; margin: 0;
}

/* Chapter 03 Composer */
.composer-title {
    font-family: var(--rv-font-serif); font-size: clamp(2rem, 4vw, 3rem); margin: 0 0 1rem;
}
.composer-desc { color: var(--rv-text-muted); max-width: 40ch; }
.composer-stage {
    display: grid; grid-template-columns: 280px 1fr; gap: 40px;
    margin-top: 40px; align-items: start;
}
.composer-group { margin-bottom: 24px; }
.composer-group__label {
    font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--rv-text-muted); margin-bottom: 10px;
}
.composer-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.composer-pill {
    padding: 8px 14px; border: 1px solid var(--rv-border); background: transparent;
    color: var(--rv-text-muted); font-size: 0.75rem; border-radius: var(--rv-radius);
    transition: all 0.25s;
}
.composer-pill:hover { border-color: var(--rv-teal); color: var(--rv-text); }
.composer-pill.is-active { background: var(--rv-teal); border-color: var(--rv-teal); color: #fff; }
.composer-preview__frame { position: relative; overflow: hidden; }
.composer-preview__frame img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.composer-preview__overlay {
    position: absolute; inset: 0; mix-blend-mode: color;
    opacity: 0.35; pointer-events: none; transition: background 0.4s;
}
.composer-preview__overlay[data-finish="teal"] { background: #3d8b8b; }
.composer-preview__overlay[data-finish="slate"] { background: #2a3544; }
.composer-preview__overlay[data-finish="bone"] { background: #e8e4dc; opacity: 0.2; }
.composer-result { margin-top: 24px; }
.composer-result__label {
    font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--rv-teal);
}
.composer-result h3 { font-family: var(--rv-font-serif); font-size: 1.5rem; margin: 8px 0; }
.composer-result p { color: var(--rv-text-muted); margin-bottom: 16px; }

/* Chapter 04 Depth Field */
.flow-chapter--depth { padding: 0; min-height: 100vh; }
.depth-field {
    position: relative; height: 100vh; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.depth-field__layer { position: absolute; will-change: transform; }
.depth-field__layer img { max-height: 70vh; width: auto; object-fit: contain; box-shadow: var(--rv-shadow); }
.depth-field__layer--back { z-index: 1; opacity: 0.4; filter: blur(1px); }
.depth-field__layer--mid { z-index: 2; opacity: 0.7; }
.depth-field__layer--front { z-index: 3; }
.depth-field__copy {
    position: relative; z-index: 10; max-width: 360px; padding: 32px;
    background: rgba(10,14,18,0.85); backdrop-filter: blur(12px);
    border: 1px solid var(--rv-border); margin-left: auto; margin-right: 10%;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}
[data-theme="light"] .depth-field__copy { background: rgba(255,255,255,0.9); }
.depth-field__copy h2 { font-family: var(--rv-font-serif); font-size: 2rem; margin: 0 0 1rem; }
.depth-field__copy h2 em { font-style: italic; color: var(--rv-teal); }
.depth-field__copy p { color: var(--rv-text-muted); font-size: 0.9375rem; margin: 0; }
.depth-field__mask {
    position: absolute; inset: 0; z-index: 5; pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 30%, var(--rv-bg) 100%);
}

/* Chapter 05 Specs */
.specs-layout { display: grid; grid-template-columns: 240px 1fr; gap: 48px; max-width: 1100px; }
.specs-layout__aside h2 { font-family: var(--rv-font-serif); font-size: 2rem; margin: 0 0 1rem; }
.specs-layout__aside p { color: var(--rv-text-muted); font-size: 0.9375rem; }
.specs-tabs { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.specs-tab {
    padding: 10px 18px; border: 1px solid var(--rv-border); background: transparent;
    color: var(--rv-text-muted); font-size: 0.8125rem; transition: all 0.25s;
}
.specs-tab.is-active { background: var(--rv-teal); border-color: var(--rv-teal); color: #fff; }
.specs-panel { display: none; }
.specs-panel.is-active { display: block; }
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 0; }
.specs-grid div { padding: 16px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }
.specs-grid dt { font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rv-teal); margin-bottom: 4px; }
.specs-grid dd { margin: 0; font-size: 0.9375rem; }
.specs-visual { margin-top: 24px; }
.specs-visual img { width: 100%; max-width: 480px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%); }

/* Chapter 06 Collection Rail */
.collection-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
.collection-head h2 { font-family: var(--rv-font-serif); font-size: clamp(2rem, 4vw, 3rem); margin: 0; }
.collection-head h2 em { font-style: italic; color: var(--rv-teal); }
.collection-head__link { font-size: 0.875rem; font-weight: 500; }
.collection-rail { overflow-x: auto; margin: 0 -24px; padding: 0 24px 16px; }
.collection-rail__track { display: flex; gap: 24px; width: max-content; }
.collection-tile { flex: 0 0 300px; }
.collection-tile__img { position: relative; overflow: hidden; margin-bottom: 16px; }
.collection-tile__img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform 0.5s var(--rv-ease); }
.collection-tile:hover .collection-tile__img img { transform: scale(1.04); }
.collection-tile__badge {
    position: absolute; top: 12px; left: 12px; padding: 4px 10px;
    font-size: 0.625rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
    background: var(--rv-teal); color: #fff;
}
.collection-tile__cat { font-family: var(--rv-font-mono); font-size: 0.625rem; color: var(--rv-teal); letter-spacing: 0.08em; }
.collection-tile h3 { font-family: var(--rv-font-serif); font-size: 1.125rem; margin: 4px 0 8px; }
.collection-tile__price { font-weight: 600; margin-bottom: 12px; }

/* Chapter 07 Process */
.process-head h2 { font-family: var(--rv-font-serif); font-size: clamp(2rem, 4vw, 3rem); margin: 0 0 2rem; }
.process-stream { list-style: none; margin: 0; padding: 0; max-width: 720px; }
.process-step {
    display: grid; grid-template-columns: 48px 1fr; gap: 24px;
    padding: 32px 0; border-bottom: 1px solid var(--rv-border);
}
.process-step__num {
    font-family: var(--rv-font-mono); font-size: 0.875rem; color: var(--rv-teal);
    padding-top: 4px;
}
.process-step h3 { font-family: var(--rv-font-serif); font-size: 1.25rem; margin: 0 0 8px; }
.process-step p { color: var(--rv-text-muted); margin: 0; font-size: 0.9375rem; }

/* Chapter 08 Voices */
.voices-layout { display: grid; grid-template-columns: 200px 1fr; gap: 48px; }
.voices-layout__intro h2 { font-family: var(--rv-font-serif); font-size: clamp(2rem, 4vw, 3rem); margin: 0; }
.voices-layout__intro h2 em { font-style: italic; color: var(--rv-teal); }
.voices-stack { display: flex; flex-direction: column; gap: 20px; }
.voice-card {
    margin: 0; padding: 28px; background: var(--rv-bg-elevated);
    border-left: 3px solid var(--rv-teal);
}
.voice-card--large { padding: 40px; }
.voice-card p { font-family: var(--rv-font-serif); font-size: 1.125rem; line-height: 1.6; margin: 0 0 16px; }
.voice-card--large p { font-size: 1.375rem; }
.voice-card footer { font-size: 0.8125rem; color: var(--rv-text-muted); }

/* Chapter 09 Trust */
.trust-grid {
    display: grid; grid-template-columns: repeat(3, 1fr) 1.5fr; gap: 24px;
    align-items: start;
}
.trust-stat { text-align: center; padding: 32px 16px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }
.trust-stat__num {
    display: block; font-family: var(--rv-font-serif); font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--rv-teal); line-height: 1;
}
.trust-stat__label { font-size: 0.8125rem; color: var(--rv-text-muted); margin-top: 8px; display: block; }
.trust-commit { padding: 32px; background: var(--rv-teal-dim); border: 1px solid var(--rv-border); }
.trust-commit h3 { font-family: var(--rv-font-serif); margin: 0 0 16px; }
.trust-commit ul { margin: 0; padding-left: 20px; color: var(--rv-text-muted); font-size: 0.9375rem; }

/* Chapter 10 Booking */
.booking-strip {
    display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto;
    gap: 32px; align-items: center; max-width: 1000px;
    padding: clamp(40px, 6vw, 64px); background: var(--rv-bg-elevated);
    border: 1px solid var(--rv-border);
    clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}
.booking-strip__type h2 {
    font-family: var(--rv-font-serif); font-size: clamp(1.5rem, 3vw, 2.25rem); margin: 0 0 1rem;
}
.booking-strip__type h2 em { font-style: italic; color: var(--rv-teal); }
.booking-strip__type p { color: var(--rv-text-muted); margin: 0; }
.booking-strip__actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.booking-strip__phone { font-family: var(--rv-font-mono); font-size: 0.875rem; margin: 8px 0 0; }
.booking-strip__visual { grid-column: 1 / -1; }
.booking-strip__visual img { width: 100%; max-height: 280px; object-fit: cover; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%); }

/* Reveal animations */
.reveal-up {
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.7s var(--rv-ease), transform 0.7s var(--rv-ease);
}
.reveal-up.is-visible { opacity: 1; transform: translateY(0); }

/* Inner Pages */
.rv-page { max-width: 1100px; margin: 0 auto; padding: clamp(48px, 8vw, 80px) clamp(24px, 5vw, 48px); }
.rv-page__title { font-family: var(--rv-font-serif); font-size: clamp(2.5rem, 5vw, 4rem); margin: 0 0 1rem; line-height: 1.1; }
.rv-page__title em { font-style: italic; color: var(--rv-teal); }
.rv-page__lead { color: var(--rv-text-muted); max-width: 56ch; margin-bottom: 3rem; }
.rv-page__cta { text-align: center; padding: 48px 0; }

/* About */
.about-narrative { display: grid; grid-template-columns: 80px 1fr; gap: 32px; margin-bottom: 4rem; }
.about-narrative__rail {
    display: flex; flex-direction: column; gap: 24px; padding-top: 8px;
    font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--rv-teal); writing-mode: vertical-rl;
}
.about-block { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 4rem; align-items: center; }
.about-block--reverse { direction: rtl; }
.about-block--reverse > * { direction: ltr; }
.about-block__visual img { width: 100%; clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%); }
.about-block__text h2 { font-family: var(--rv-font-serif); font-size: 1.75rem; margin: 0 0 1rem; }
.about-block__text p { color: var(--rv-text-muted); }
.about-values { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.about-values li { padding: 12px 0; border-bottom: 1px solid var(--rv-border); }
.about-values strong { display: block; margin-bottom: 4px; }
.about-values span { font-size: 0.875rem; color: var(--rv-text-muted); }
.timeline-flow { list-style: none; padding: 0; margin: 0; }
.timeline-flow li { display: grid; grid-template-columns: 80px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--rv-border); }
.timeline-flow__year { font-family: var(--rv-font-mono); font-size: 0.875rem; color: var(--rv-teal); }
.timeline-flow__card strong { display: block; margin-bottom: 8px; }
.timeline-flow__card p { color: var(--rv-text-muted); margin: 0; font-size: 0.9375rem; }
.about-location { margin-bottom: 3rem; }
.about-location address { margin-top: 12px; font-size: 0.9375rem; }

/* Shop */
.shop-toolbar { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--rv-border); }
.shop-toolbar__cats { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.shop-toolbar__cat {
    padding: 8px 16px; font-size: 0.75rem; font-weight: 500; letter-spacing: 0.04em;
    border: 1px solid var(--rv-border); color: var(--rv-text-muted); transition: all 0.25s;
}
.shop-toolbar__cat:hover, .shop-toolbar__cat.is-active { border-color: var(--rv-teal); color: var(--rv-teal); background: var(--rv-teal-dim); }
.shop-toolbar__search { display: flex; gap: 8px; }
.shop-toolbar__search input {
    padding: 8px 14px; border: 1px solid var(--rv-border); background: var(--rv-bg-elevated);
    color: var(--rv-text); font-family: inherit; min-width: 180px;
}
.shop-toolbar__count { font-family: var(--rv-font-mono); font-size: 0.75rem; color: var(--rv-text-muted); }
.shop-mosaic__grid {
    display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px;
}
.shop-piece { grid-column: span 4; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); overflow: hidden; transition: transform 0.3s var(--rv-ease); }
.shop-piece:hover { transform: translateY(-4px); }
.shop-piece--hero { grid-column: span 8; }
.shop-piece--tall { grid-row: span 2; }
.shop-piece__frame { position: relative; overflow: hidden; }
.shop-piece__frame img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform 0.5s; }
.shop-piece:hover .shop-piece__frame img { transform: scale(1.03); }
.shop-piece--hero .shop-piece__frame img { aspect-ratio: 16/9; }
.shop-piece__badge { position: absolute; top: 12px; left: 12px; padding: 4px 10px; font-size: 0.625rem; background: var(--rv-teal); color: #fff; }
.shop-piece__wish {
    position: absolute; top: 12px; right: 12px; width: 36px; height: 36px;
    border: none; background: rgba(10,14,18,0.7); color: #fff; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; transition: all 0.25s;
}
.shop-piece__wish.is-wished { background: var(--rv-teal); }
.shop-piece__body { padding: 20px; }
.shop-piece__cat { font-family: var(--rv-font-mono); font-size: 0.625rem; color: var(--rv-teal); letter-spacing: 0.08em; }
.shop-piece__name { font-family: var(--rv-font-serif); font-size: 1.125rem; margin: 4px 0 12px; }
.shop-piece__specs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 0 0 16px; font-size: 0.8125rem; }
.shop-piece__specs dt { color: var(--rv-text-muted); }
.shop-piece__specs dd { margin: 0; }
.shop-piece__footer { display: flex; justify-content: space-between; align-items: center; }
.shop-piece__price { font-weight: 600; }
.shop-empty { text-align: center; padding: 64px 24px; grid-column: 1 / -1; }

/* FAQ */
.faq-split { display: grid; grid-template-columns: 200px 1fr; gap: 40px; margin-bottom: 3rem; }
.faq-split__tabs { display: flex; flex-direction: column; gap: 4px; }
.faq-split__tab {
    padding: 12px 16px; text-align: left; border: none; background: transparent;
    color: var(--rv-text-muted); font-size: 0.875rem; border-left: 2px solid transparent;
    transition: all 0.25s;
}
.faq-split__tab.is-active { color: var(--rv-text); border-left-color: var(--rv-teal); background: var(--rv-teal-dim); }
.faq-split__panel { display: none; }
.faq-split__panel.is-active { display: block; }
.faq-split__title { font-family: var(--rv-font-serif); font-size: 1.5rem; margin: 0 0 1.5rem; }
.faq-item { border-bottom: 1px solid var(--rv-border); }
.faq-item__q {
    padding: 20px 0; cursor: pointer; font-weight: 500; list-style: none;
    display: flex; justify-content: space-between; align-items: center;
}
.faq-item__q::-webkit-details-marker { display: none; }
.faq-item__q::after { content: '+'; font-family: var(--rv-font-mono); color: var(--rv-teal); }
.faq-item[open] .faq-item__q::after { content: '−'; }
.faq-item__a { padding: 0 0 20px; color: var(--rv-text-muted); }
.faq-bottom { text-align: center; padding: 48px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }

/* Contact */
.contact-split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-card, .contact-form { padding: 32px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }
.contact-card h2, .contact-form h2 { font-family: var(--rv-font-serif); font-size: 1.25rem; margin: 0 0 1.5rem; }
.contact-card__list { margin: 1.5rem 0 0; }
.contact-card__list div { display: grid; grid-template-columns: 80px 1fr; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--rv-border); }
.contact-card__list dt { font-size: 0.8125rem; color: var(--rv-text-muted); }
.contact-card__list dd { margin: 0; }
.contact-map { margin-top: 24px; }
.contact-map__embed { margin-top: 16px; aspect-ratio: 16/10; }
.contact-map__embed iframe { width: 100%; height: 100%; border: 0; filter: grayscale(0.3); }
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: 0.8125rem; font-weight: 500; margin-bottom: 6px; }
.form-row .req { color: var(--rv-teal); }
.form-row input, .form-row select, .form-row textarea {
    width: 100%; padding: 12px 14px; border: 1px solid var(--rv-border);
    background: var(--rv-bg); color: var(--rv-text); font-family: inherit; font-size: 0.9375rem;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
    outline: none; border-color: var(--rv-teal);
}
.form-note { font-size: 0.8125rem; color: var(--rv-text-muted); margin-top: 12px; }

/* Cart */
.cart-flow { display: grid; grid-template-columns: 1fr 340px; gap: 40px; }
.cart-empty { text-align: center; padding: 64px 24px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }
.cart-empty__icon { color: var(--rv-text-muted); margin-bottom: 16px; }
.cart-table { background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); }
.cart-table__head, .cart-row {
    display: grid; grid-template-columns: 2fr 1fr 100px 1fr 40px; gap: 16px;
    padding: 16px 20px; align-items: center;
}
.cart-table__head { font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rv-text-muted); border-bottom: 1px solid var(--rv-border); }
.cart-row { border-bottom: 1px solid var(--rv-border); }
.cart-row__product { display: flex; align-items: center; gap: 12px; }
.cart-row__product img { width: 72px; height: 54px; object-fit: cover; }
.cart-qty { display: flex; align-items: center; gap: 8px; }
.cart-qty button { width: 28px; height: 28px; border: 1px solid var(--rv-border); background: transparent; color: var(--rv-text); }
.cart-row__remove { border: none; background: transparent; color: var(--rv-text-muted); font-size: 1.25rem; }
.cart-aside { padding: 28px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); height: fit-content; position: sticky; top: calc(var(--rv-spine-h) + 24px); }
.cart-aside h2 { font-family: var(--rv-font-serif); font-size: 1.25rem; margin: 0 0 1.5rem; }
.cart-coupon { margin-bottom: 24px; }
.cart-coupon label { font-size: 0.8125rem; display: block; margin-bottom: 8px; }
.cart-coupon__row { display: flex; gap: 8px; }
.cart-coupon__row input { flex: 1; padding: 10px 12px; border: 1px solid var(--rv-border); background: var(--rv-bg); color: var(--rv-text); }
.cart-coupon__msg { font-size: 0.8125rem; margin-top: 8px; }
.cart-coupon__msg.is-success { color: var(--rv-teal); }
.cart-coupon__msg.is-error { color: #c45; }
.cart-totals { margin: 0 0 24px; }
.cart-totals div { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--rv-border); font-size: 0.9375rem; }
.cart-totals dt, .cart-totals dd { margin: 0; }
.cart-totals__grand { font-weight: 600; font-size: 1.125rem; border-bottom: none; padding-top: 16px; }
.cart-note { font-size: 0.75rem; color: var(--rv-text-muted); margin-top: 16px; line-height: 1.5; }

/* Legal */
.legal-page { max-width: 760px; margin: 0 auto; padding: clamp(48px, 8vw, 80px) clamp(24px, 5vw, 48px); }
.legal-page__header h1 { font-family: var(--rv-font-serif); font-size: clamp(2rem, 4vw, 2.75rem); margin: 0 0 8px; }
.legal-page__updated { font-size: 0.875rem; color: var(--rv-text-muted); margin-bottom: 2rem; }
.legal-page__body h2 { font-family: var(--rv-font-serif); font-size: 1.375rem; margin: 2.5rem 0 1rem; padding-top: 1rem; border-top: 1px solid var(--rv-border); }
.legal-page__body h3 { font-size: 1rem; margin: 1.5rem 0 0.75rem; }
.legal-page__body p, .legal-page__body li { color: var(--rv-text-muted); font-size: 0.9375rem; }
.legal-page__body ul { padding-left: 1.25rem; }
.legal-page__body address { margin-top: 1rem; padding: 20px; background: var(--rv-bg-elevated); border: 1px solid var(--rv-border); font-size: 0.9375rem; line-height: 1.8; }

/* Footer */
.rv-footer { position: relative; margin-top: 0; background: var(--rv-bg-elevated); border-top: 1px solid var(--rv-border); }
.page-flow .rv-footer { margin-left: var(--rv-sidebar-w); }
.rv-footer__cut {
    position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--rv-teal), transparent 60%);
}
.rv-footer__grid {
    display: grid; grid-template-columns: 1.2fr 1.5fr 1.3fr; gap: 48px;
    max-width: 1200px; margin: 0 auto; padding: 64px clamp(24px, 5vw, 48px) 48px;
}
.rv-footer__logo span { font-family: var(--rv-font-serif); font-size: 1.5rem; display: block; color: var(--rv-text); }
.rv-footer__logo em { font-size: 0.75rem; color: var(--rv-text-muted); font-style: normal; }
.rv-footer__brand p { color: var(--rv-text-muted); font-size: 0.875rem; margin: 12px 0; }
.rv-footer__license { font-size: 0.75rem; opacity: 0.7; }
.rv-footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.rv-footer__nav h3, .rv-footer__studio h3 {
    font-family: var(--rv-font-mono); font-size: 0.6875rem; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--rv-teal); margin: 0 0 16px;
}
.rv-footer__nav ul { list-style: none; padding: 0; margin: 0; }
.rv-footer__nav li { margin-bottom: 8px; }
.rv-footer__nav a { color: var(--rv-text-muted); font-size: 0.875rem; }
.rv-footer__nav a:hover { color: var(--rv-teal-bright); }
.rv-footer__studio address, .rv-footer__studio p { font-size: 0.875rem; color: var(--rv-text-muted); margin: 0 0 8px; }
.rv-footer__newsletter { margin-top: 20px; }
.rv-footer__newsletter label { font-size: 0.8125rem; display: block; margin-bottom: 8px; }
.rv-footer__newsletter-row { display: flex; gap: 8px; }
.rv-footer__newsletter-row input {
    flex: 1; padding: 10px 12px; border: 1px solid var(--rv-border);
    background: var(--rv-bg); color: var(--rv-text); font-size: 0.875rem;
}
.rv-footer__base {
    display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between;
    padding: 20px clamp(24px, 5vw, 48px); border-top: 1px solid var(--rv-border);
    font-size: 0.75rem; color: var(--rv-text-muted);
}

/* Mobile Drawer */
.rv-drawer {
    position: fixed; inset: 0; z-index: 950; background: rgba(10,14,18,0.6);
    opacity: 0; visibility: hidden; transition: all 0.35s var(--rv-ease);
}
.rv-drawer.is-open { opacity: 1; visibility: visible; }
.rv-drawer__sheet {
    position: absolute; top: 0; right: 0; width: min(320px, 85vw); height: 100%;
    background: var(--rv-bg-elevated); padding: 80px 32px 32px;
    transform: translateX(100%); transition: transform 0.35s var(--rv-ease);
    display: flex; flex-direction: column; gap: 4px;
}
.rv-drawer.is-open .rv-drawer__sheet { transform: translateX(0); }
.rv-drawer__eyebrow { font-family: var(--rv-font-mono); font-size: 0.625rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--rv-teal); margin-bottom: 24px; }
.rv-drawer__sheet a { padding: 14px 0; font-size: 1rem; color: var(--rv-text); border-bottom: 1px solid var(--rv-border); }
.rv-drawer__meta { margin-top: auto; font-size: 0.8125rem; color: var(--rv-text-muted); display: flex; flex-direction: column; gap: 4px; }

/* Search Veil */
.search-veil {
    position: fixed; inset: 0; z-index: 960; background: rgba(10,14,18,0.85);
    display: flex; align-items: flex-start; justify-content: center; padding-top: 20vh;
    opacity: 0; visibility: hidden; transition: all 0.3s;
}
.search-veil.is-open { opacity: 1; visibility: visible; }
.search-veil__sheet { width: min(560px, 90vw); position: relative; }
.search-veil__close {
    position: absolute; top: -40px; right: 0; border: none; background: none;
    color: #fff; font-size: 1.5rem;
}
.search-veil__label { font-family: var(--rv-font-mono); font-size: 0.6875rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--rv-teal); margin-bottom: 12px; }
.search-veil__form { display: flex; gap: 8px; }
.search-veil__form input {
    flex: 1; padding: 16px 20px; border: 1px solid var(--rv-border);
    background: var(--rv-bg-elevated); color: var(--rv-text); font-size: 1rem;
}

/* Back to top */
.back-top {
    position: fixed; bottom: 24px; right: 24px; z-index: 700;
    width: 44px; height: 44px; border: 1px solid var(--rv-border);
    background: var(--rv-bg-elevated); color: var(--rv-text);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transform: translateY(12px);
    transition: all 0.3s var(--rv-ease);
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--rv-teal); border-color: var(--rv-teal); color: #fff; }

/* Toast */
.rv-toast {
    position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%) translateY(20px);
    padding: 12px 24px; background: var(--rv-teal); color: #fff;
    font-size: 0.875rem; z-index: 9999; opacity: 0; transition: all 0.3s;
    pointer-events: none; white-space: nowrap;
}
.rv-toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
    .gate-layout, .composer-stage, .specs-layout, .contact-split, .cart-flow,
    .about-block, .faq-split, .trust-grid, .voices-layout { grid-template-columns: 1fr; }
    .shop-mosaic__grid { grid-template-columns: repeat(6, 1fr); }
    .shop-piece, .shop-piece--hero { grid-column: span 6; }
    .booking-strip { grid-template-columns: 1fr; }
    .rv-footer__grid { grid-template-columns: 1fr 1fr; }
    .about-narrative { grid-template-columns: 1fr; }
    .about-narrative__rail { writing-mode: horizontal-tb; flex-direction: row; }
    .about-block--reverse { direction: ltr; }
}

@media (max-width: 768px) {
    :root { --rv-sidebar-w: 0px; }
    .flow-sidebar { display: none; }
    .page-flow .rv-spine__bar, .rv-main--flow, .page-flow .rv-footer { margin-left: 0; padding-left: 0; }
    .rv-spine__links { display: none; }
    .rv-spine__toggle { display: flex; }
    .cart-table__head { display: none; }
    .cart-row { grid-template-columns: 1fr; gap: 8px; }
    .shop-mosaic__grid { grid-template-columns: 1fr; }
    .shop-piece, .shop-piece--hero, .shop-piece--tall { grid-column: span 1; grid-row: span 1; }
    .trust-grid { grid-template-columns: 1fr 1fr; }
    .trust-commit { grid-column: 1 / -1; }
    .rv-footer__grid { grid-template-columns: 1fr; }
    .depth-field__copy { margin: 0 24px; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}