/* ==========================================================================
   CSS Variables & Typography (Inherited from generic-semantic-mix-b)
   ========================================================================== */
:root {
    --bg-core: #fdfdfd;
    --bg-alt: #f4f7f9;
    --surface: #ffffff;
    --radius: 9px;
    --radius-lg: 16px;
    --shadow-base: 0 4px 12px -2px rgba(0, 0, 0, 0.04), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
    --shadow-hover: 0 12px 24px -4px rgba(0, 0, 0, 0.08), 0 6px 12px -2px rgba(0, 0, 0, 0.04), 0 0 0 1px var(--prime-soft);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --prime: #72e1dd;
    --prime-soft: rgba(114, 225, 221, 0.3);
    --prime-glow: rgba(114, 225, 221, 0.6);
    --text-main: #1a202c;
    --text-mut: #4a5568;
    --text-light: #718096;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2.5rem;
    --space-lg: 5rem;
    --space-xl: 8rem;
    --font: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    --trans: 0.25s ease;
}

/* ==========================================================================
   Global Resets & Constraints
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font);
    color: var(--text-mut);
    background-color: var(--bg-core);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--trans);
}

/* Base Flex/Grid/Text Constraints */
.board, .pool, .tray, .skin {
    display: flex;
    flex-wrap: wrap;
    min-width: 0;
}

.board > *, .pool > *, .tray > *, .skin > * {
    min-width: 0;
}

.char, .stroke {
    word-break: break-word;
    overflow-wrap: break-word;
}

.char {
    word-break: keep-all;
}

.stroke {
    white-space: normal;
}

/* ==========================================================================
   Navigation (Forced Reuse)
   ========================================================================== */
.ping {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    background: rgba(253, 253, 253, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    z-index: 1000;
}

.glyph {
    display: flex;
    align-items: center;
    height: 32px;
}

.glyph img {
    height: 100%;
}

.trail {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.mark {
    font-size: 1rem;
    color: var(--text-mut);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.mark:hover {
    color: var(--prime-dark);
}

.mark.active {
    color: var(--text-main);
    font-weight: 600;
}

.mark.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--prime);
    border-radius: 3px 3px 0 0;
}

@media (max-width: 768px) {
    .trail {
        display: none; /* Simplification for mobile view of reused header */
    }
}

/* ==========================================================================
   Main Layout & Structure
   ========================================================================== */
.root {
    padding-top: 72px; /* Offset for fixed [role="navigation"] */
}

/* Section 1: Hero Intro */
.cloud {
    padding: var(--space-xl) 5% var(--space-lg);
    background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg-core) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cloud::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 80vw;
    height: 80vw;
    background: radial-gradient(circle, var(--prime-soft) 0%, transparent 70%);
    opacity: 0.5;
    z-index: 0;
    pointer-events: none;
}

.ink-cloud {
    max-width: 800px;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.stroke-cloud {
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--text-main);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0;
}

.char-cloud {
    font-size: 1.25rem;
    color: var(--text-mut);
    max-width: 600px;
    margin: 0;
}

/* Hero SVG Animation Component */
.stage-svg {
    width: 100%;
    max-width: 600px;
    margin-top: var(--space-md);
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-base);
    border: 1px solid rgba(0,0,0,0.03);
    position: relative;
}

.key {
    transform-origin: center;
    transition: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes typeAction {
    0%, 100% { transform: translateY(0) scale(1); filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1)); fill: #ffffff; }
    50% { transform: translateY(4px) scale(0.98); filter: drop-shadow(0 0px 2px rgba(114, 225, 221, 0.8)); fill: #f0fffe; }
}

.key-anim-1 { animation: typeAction 2s infinite 0.2s; }
.key-anim-2 { animation: typeAction 2.5s infinite 0.7s; }
.key-anim-3 { animation: typeAction 1.8s infinite 1.1s; }
.key-anim-4 { animation: typeAction 2.2s infinite 0.4s; }

/* Section 2: Theme Matrix */
.stage {
    padding: var(--space-lg) 5%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.stroke-sect {
    font-size: 2rem;
    color: var(--text-main);
    font-weight: 700;
    margin: 0 0 var(--space-sm) 0;
    text-align: center;
}

.char-sect {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-md);
}

.pool-tags {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.byte-tag {
    padding: 0.5rem 1.25rem;
    background: var(--surface);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-mut);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    border: 1px solid rgba(0,0,0,0.02);
    cursor: pointer;
}

.byte-tag:hover {
    color: var(--prime-dark);
    box-shadow: 0 4px 12px rgba(114, 225, 221, 0.2);
    transform: translateY(-2px);
}

.board-matrix {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    align-items: center;
}

.ink-media {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    position: relative;
}

.ink-media::after {
    content: '';
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.05);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.seal-grid {
    width: 100%;
    transition: transform 0.5s ease;
}

.ink-media:hover .seal-grid {
    transform: scale(1.03);
}

.tray-bond {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.tile-theme {
    padding: 1.5rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.03);
    box-shadow: var(--shadow-base);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all var(--trans);
}

.tile-theme:hover {
    box-shadow: var(--shadow-hover);
    transform: translateX(8px);
}

.bark-theme {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--bg-alt);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--prime-dark);
}

.ink-desc {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.stroke-sub {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 0.25rem 0;
}

.char-sub {
    font-size: 0.9rem;
    margin: 0;
}

/* Section 3: DIY Studio */
.vista {
    padding: var(--space-lg) 5%;
    background-color: var(--bg-core);
    border-top: 1px solid rgba(0,0,0,0.02);
}

.ink-vista {
    max-width: 1200px;
    margin: 0 auto;
}

.board-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.keypad-step {
    padding: 2.5rem 2rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-base);
    border: 1px solid rgba(0,0,0,0.03);
    text-align: center;
    position: relative;
    z-index: 1;
}

.keypad-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, var(--bg-alt));
    opacity: 0;
    z-index: -1;
    border-radius: var(--radius);
    transition: opacity var(--trans);
}

.keypad-step:hover::before {
    opacity: 1;
}

.keypad-step:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.bark-step {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
}

.bark-step svg {
    width: 100%;
    height: 100%;
    fill: none;
    stroke: var(--prime-dark);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.stroke-step {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 1rem 0;
}

/* Action Element (Button variant) */
.tap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    background-color: var(--text-main);
    color: var(--surface);
    font-weight: 600;
    border-radius: var(--radius);
    box-shadow: 0 4px 14px 0 rgba(0,0,0,0.1);
    margin-top: var(--space-md);
    cursor: pointer;
}

.tap:hover {
    background-color: #000000;
    box-shadow: 0 6px 20px 0 rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

/* Footer */
.dock {
    background-color: #1a202c;
    color: #a0aec0;
    padding: var(--space-lg) 5% var(--space-md);
}

.ink-dock {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.board-dock {
    display: flex;
    justify-content: space-between;
    gap: var(--space-md);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: var(--space-md);
}

.stroke-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--surface);
    margin: 0 0 1rem 0;
}

.tray-links {
    display: flex;
    gap: 3rem;
}

.skin-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stroke-col {
    font-size: 1rem;
    color: var(--surface);
    margin: 0 0 0.5rem 0;
}

.mark-dock {
    font-size: 0.9rem;
}

.mark-dock:hover {
    color: var(--prime);
}

.pool-legal {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .board-matrix {
        grid-template-columns: 1fr;
    }
    
    .ink-media {
        order: -1; /* Image on top */
    }
}

@media (max-width: 768px) {
    .cloud {
        padding-top: var(--space-lg);
    }
    
    .stroke-cloud {
        font-size: 2.2rem;
    }
    
    .board-dock {
        flex-direction: column;
    }
    
    .tray-links {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .pool-legal {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        text-align: center;
    }
}

.trail-ping {
    font-family: var(--font-sans);
    line-height: 1.7;
    color: var(--char-mid);
}
.trail-ping,
.trail-ping *,
.trail-ping *::before,
.trail-ping *::after {
    box-sizing: border-box;
}

.trail-ping [role="navigation"],
.trail-ping div,
.trail-ping section,
.trail-ping article,
.trail-ping aside,
.trail-ping p,
.trail-ping h1,
.trail-ping h2,
.trail-ping h3,
.trail-ping h4,
.trail-ping h5,
.trail-ping h6,
.trail-ping a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.trail-ping p,
.trail-ping h1,
.trail-ping h2,
.trail-ping h3,
.trail-ping h4,
.trail-ping h5,
.trail-ping h6 {
    text-decoration: none;
}

.trail-ping img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.trail-ping {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.trail-ping a.trail-mark {
    --aisite-shell-nav-padding: 0.5rem 0;
    --aisite-shell-nav-margin: 0;
    --aisite-shell-nav-line-height: normal;
    --aisite-shell-nav-display: inline;
    --aisite-shell-nav-height: auto;
    --aisite-shell-nav-min-height: auto;
}

.trail-ping a.trail-mark,
.trail-ping a.trail-mark:hover,
.trail-ping a.trail-mark:focus,
.trail-ping a.trail-mark:active,
.trail-ping a.trail-mark.active,
.trail-ping a.trail-mark[aria-current="page"] {
    background: transparent;
    border: none;
    border-bottom: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
    padding: var(--aisite-shell-nav-padding, 0);
    margin: var(--aisite-shell-nav-margin, 0);
    line-height: var(--aisite-shell-nav-line-height, normal);
    display: var(--aisite-shell-nav-display, inline);
    height: var(--aisite-shell-nav-height, auto);
    min-height: var(--aisite-shell-nav-min-height, auto);
}

.trail-ping .trail-mark{
            word-break: break-word;
            overflow-wrap: break-word;
        }

.trail-ping .trail-trail, .trail-ping{
            display: flex;
            flex-wrap: wrap;
        }

.trail-ping .trail-trail > *, .trail-ping > *{
            min-width: 0;
        }

.trail-ping{
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(253, 253, 253, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.03);
            padding: 1rem 2.5rem;
            align-items: center;
            justify-content: space-between;
        }

.trail-ping .trail-glyph img{
            height: 32px;
            width: auto;
            display: block;
        }

.trail-ping .trail-trail{
            gap: 2rem;
            align-items: center;
        }

.trail-ping .trail-mark{
            text-decoration: none;
            color: #4a5568;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            position: relative;
            padding: 0.5rem 0;
        }

.trail-ping .trail-mark:hover{
            color: #4cb8b4;
        }

.trail-ping .trail-mark::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #72e1dd;
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.4s ease;
        }

.trail-ping .trail-mark:hover::after, .trail-ping .trail-mark.active::after{
            transform: scaleX(1);
            transform-origin: left;
        }

.trail-ping .trail-mark.active{
            color: #1a202c;
            font-weight: 600;
        }

@media (max-width: 768px){.trail-ping .trail-trail{
                display: none; 
            }}

.trail-ping {
    background: rgb(253, 253, 253);
    background-image: none;
}

.dock-dock {
    font-family: var(--font-sans);
    line-height: 1.7;
    color: var(--char-mid);
}
.dock-dock,
.dock-dock *,
.dock-dock *::before,
.dock-dock *::after {
    box-sizing: border-box;
}

.dock-dock [role="navigation"],
.dock-dock div,
.dock-dock section,
.dock-dock article,
.dock-dock aside,
.dock-dock p,
.dock-dock h1,
.dock-dock h2,
.dock-dock h3,
.dock-dock h4,
.dock-dock h5,
.dock-dock h6,
.dock-dock a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.dock-dock p,
.dock-dock h1,
.dock-dock h2,
.dock-dock h3,
.dock-dock h4,
.dock-dock h5,
.dock-dock h6 {
    text-decoration: none;
}

.dock-dock img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.dock-dock {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.dock-dock a,
.dock-dock a:hover,
.dock-dock a:focus,
.dock-dock a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.dock-dock .dock-char{
            word-break: break-word;
            overflow-wrap: break-word;
        }

.dock-dock .dock-board{
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2.5rem;
        }

.dock-dock{
            background-color: #1a202c;
            color: rgba(255,255,255,0.7);
            padding: 4rem 0 2rem 0;
            font-size: 0.9rem;
        }

.dock-dock .dock-dock-skin{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 3rem;
            margin-bottom: 3rem;
        }

.dock-dock .dock-dock-byte{
            flex: 1 1 250px;
        }

.dock-dock .dock-dock-stroke{
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 1px;
        }

.dock-dock .dock-dock-trail{
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

.dock-dock .dock-dock-trail a{
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: all 0.25s ease;
        }

.dock-dock .dock-dock-trail a:hover{
            color: #72e1dd;
        }

.dock-dock .dock-dock-root{
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 2rem;
            text-align: center;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

@media (max-width: 768px){.dock-dock .dock-dock-skin{
                flex-direction: column;
            }

.dock-dock .dock-dock-root{
                flex-direction: column;
                text-align: center;
            }}