.page-content {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    padding-top: 72px;
    padding-bottom: 2rem;
}

.page-container {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.2rem;
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.bc-link {
    color: var(--sc-text-dim);
    transition: var(--transition);
}

.bc-link:hover {
    color: var(--sc-cyan);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
}

.bc-sep {
    color: var(--sc-blue-dim);
    font-size: 0.5rem;
}

.bc-current {
    color: var(--sc-cyan);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
}

.page-header {
    margin-bottom: 1.2rem;
}

.header-panel {
    padding: 1.5rem 2rem;
}

.header-layout {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header-icon-wrap {
    flex-shrink: 0;
}

.header-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sc-cyan);
    border: 1px solid var(--sc-border-bright);
    background: var(--sc-surface);
    clip-path: polygon(8px 0, calc(100% - 8px) 0, 100% 8px, 100% calc(100% - 8px), calc(100% - 8px) 100%, 8px 100%, 0 calc(100% - 8px), 0 8px);
    filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.2));
}

.header-icon svg {
    width: 28px;
    height: 28px;
}

.header-text {
    flex: 1;
}

.header-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--sc-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.8;
    margin-bottom: 0.3rem;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.5vw, 2.2rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--sc-text-bright);
    text-shadow: 0 0 20px rgba(0, 170, 255, 0.3), 0 0 60px rgba(0, 170, 255, 0.1);
    line-height: 1.1;
    margin-bottom: 0.4rem;
}

.page-desc {
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--sc-text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.6;
    max-width: 700px;
}

.content-columns {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.2rem;
    align-items: start;
}

.content-panel {
    margin-bottom: 1.2rem;
}

.content-panel:last-child {
    margin-bottom: 0;
}

.prose {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.8;
    color: var(--sc-text);
    letter-spacing: 0.04em;
}

.prose p {
    margin-bottom: 0.8rem;
    text-transform: none;
}

.prose p:last-child {
    margin-bottom: 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    padding: 0.7rem 0.8rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    transition: var(--transition);
    clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.feature-item:hover {
    border-color: var(--sc-border-hover);
    background: var(--sc-surface-hover);
    box-shadow: var(--glow-blue);
}

.feature-marker {
    width: 4px;
    height: 4px;
    margin-top: 0.45rem;
    flex-shrink: 0;
    background: var(--sc-cyan);
    box-shadow: 0 0 6px var(--sc-cyan);
    transform: rotate(45deg);
}

.feature-name {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--sc-blue-bright);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.2rem;
}

.feature-desc {
    font-family: var(--font-display);
    font-size: 0.62rem;
    font-weight: 400;
    color: var(--sc-text-muted);
    letter-spacing: 0.04em;
    line-height: 1.5;
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.8rem 1rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    transition: var(--transition);
    clip-path: polygon(0 8px, 8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.step-item:hover {
    border-color: var(--sc-border-hover);
    background: var(--sc-surface-hover);
}

.step-num {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--sc-blue);
    text-shadow: 0 0 10px rgba(30, 144, 255, 0.4);
    line-height: 1;
    flex-shrink: 0;
    min-width: 32px;
}

.step-title {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--sc-text-bright);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.15rem;
}

.step-desc {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--sc-text-muted);
    letter-spacing: 0.04em;
    line-height: 1.6;
}

.sidebar-stats {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.sidebar-stat {
    display: flex;
    flex-direction: column;
    padding: 0.6rem 0.8rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    clip-path: polygon(0 6px, 6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
    transition: var(--transition);
}

.sidebar-stat:hover {
    border-color: var(--sc-border-hover);
}

.sidebar-stat-val {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--sc-cyan);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

.sidebar-stat-lbl {
    font-family: var(--font-display);
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--sc-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sidebar-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-tool-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.8rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sc-text-muted);
    transition: var(--transition);
    clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.sidebar-tool-link:hover {
    border-color: var(--sc-border-hover);
    background: var(--sc-surface-hover);
    color: var(--sc-cyan);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
}

.stl-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--sc-blue-bright);
    transition: var(--transition);
}

.sidebar-tool-link:hover .stl-icon {
    color: var(--sc-cyan);
    filter: drop-shadow(0 0 4px rgba(0, 229, 255, 0.5));
}

.stl-arrow {
    margin-left: auto;
    font-size: 0.55rem;
    color: var(--sc-text-dim);
    transition: var(--transition);
}

.sidebar-tool-link:hover .stl-arrow {
    color: var(--sc-cyan);
    transform: translateX(3px);
}

.back-home-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.2rem;
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.15) 0%, rgba(0, 229, 255, 0.08) 100%);
    border: 1px solid var(--sc-blue);
    color: var(--sc-cyan);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: var(--transition);
    clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
    cursor: pointer;
}

.back-home-btn:hover {
    border-color: var(--sc-cyan);
    color: #fff;
    box-shadow: var(--glow-cyan);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: inherit;
    text-decoration: none;
}

.page-header {
    animation: glitchIn 0.8s ease-out;
}

.content-columns .col-main {
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

.content-columns .col-side {
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

@media (max-width: 1024px) {
    .page-container {
        padding: 0 1.5rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-content {
        padding-top: 64px;
    }

    .content-columns {
        grid-template-columns: 1fr;
    }

    .header-layout {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .col-side {
        order: -1;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .page-desc {
        max-width: none;
    }
}

.sidebar-tool-link.stl-active {
    border-color: var(--sc-cyan);
    color: var(--sc-cyan);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.08) 0%, rgba(30, 144, 255, 0.04) 100%);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
}

.sidebar-tool-link.stl-active .stl-arrow {
    color: var(--sc-cyan);
}

.sidebar-tool-link .feature-marker {
    margin-top: 0;
    align-self: center;
}

.sidebar-years {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.year-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.3rem 0.65rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--sc-text-muted);
    letter-spacing: 0.05em;
    transition: var(--transition);
    clip-path: polygon(4px 0, 100% 0, calc(100% - 4px) 100%, 0 100%);
}

.year-chip:hover {
    border-color: var(--sc-cyan);
    color: var(--sc-cyan);
    background: var(--sc-surface-hover);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
}

.pub-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.pub-item {
    position: relative;
    padding: 0.65rem 0.8rem 0.65rem 1.2rem;
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--sc-text-muted);
    letter-spacing: 0.03em;
    text-transform: none;
    transition: var(--transition);
    clip-path: polygon(0 6px, 6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.pub-item::before {
    content: '◆';
    position: absolute;
    left: 0.35rem;
    top: 0.65rem;
    font-size: 0.35rem;
    color: var(--sc-cyan);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
}

.pub-item:hover {
    border-color: var(--sc-border-hover);
    background: var(--sc-surface-hover);
}

.pub-item a {
    color: var(--sc-blue-bright);
    transition: var(--transition);
}

.pub-item a:hover {
    color: var(--sc-cyan);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
}

.prose a {
    color: var(--sc-blue-bright);
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.prose a:hover {
    color: var(--sc-cyan);
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
    border-bottom-color: var(--sc-cyan);
}

.prose ul,
.prose ol {
    padding-left: 1.2rem;
    margin-bottom: 0.8rem;
}

.prose li {
    margin-bottom: 0.4rem;
    position: relative;
    text-transform: none;
}

.prose ul li::marker {
    color: var(--sc-cyan);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-top: 0.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.form-label {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sc-text-dim);
}

.form-input {
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    padding: 0.7rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--sc-text-bright);
    transition: var(--transition);
    outline: none;
    clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.form-input::placeholder {
    color: var(--sc-text-dim);
    opacity: 0.5;
}

.form-input:focus {
    border-color: var(--sc-cyan);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.15), inset 0 0 12px rgba(0, 229, 255, 0.05);
    background: rgba(0, 10, 30, 0.6);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}