@import url('/shell/app-theme.css?v=a3ac7c8570');

:root {
    --sidebar-w: 360px;
    --right-w: 350px;
}

[data-shell-cloak] {
    display: none;
}

.shell-hidden {
    display: none !important;
}

.shell-loader {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, visibility 0.18s ease;
}

.shell-loader.shell-loader-visible {
    opacity: 1;
    visibility: visible;
}

.shell-loading-active #shell-shared-header,
.shell-loading-active #shell-route-host,
.shell-loading-active #shell-mobile-drawer-overlay,
.shell-loading-active #shell-mobile-drawer {
    visibility: hidden;
}

.shell-loading-active #shell-loader {
    visibility: visible;
}

.shell-loader-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    min-width: 180px;
    padding: 24px 28px;
    border: 1px solid rgba(240, 192, 64, 0.22);
    border-radius: 20px;
    background: rgba(12, 10, 24, 0.88);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(6px);
}

.shell-loader-frame-host {
    position: relative;
    width: min(160px, 40vw);
    aspect-ratio: 1;
}

.shell-loader-frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: auto;
    display: none;
    pointer-events: none;
}

.shell-loader-frame.shell-loader-frame-active {
    display: block;
}

.shell-loader-label {
    color: var(--gold-lt);
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-row);
    border-radius: 6px;
}

.layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr var(--right-w);
    grid-template-areas: 'left center right';
    min-height: calc(100vh - var(--app-header-height) - 40px);
    min-height: calc(100dvh - var(--app-header-height) - 40px);
    gap: 16px;
    padding: var(--app-layout-top-padding) var(--app-page-gutter) var(--app-page-bottom);
    max-width: 1400px;
    margin: 0 auto;
}

.layout.about-view {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: 'center';
    max-width: var(--app-page-max-wide);
}

.layout.item-view {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    grid-template-areas: 'left center';
    max-width: var(--app-page-max-wide);
}

.layout.bonus-view {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    grid-template-areas: 'left center';
    max-width: var(--app-page-max-wide);
}

.layout.calc-view {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    grid-template-areas: 'left center';
    max-width: var(--app-page-max-wide);
}

.sidebar-left {
    grid-area: left;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: sticky;
    top: var(--app-panel-sticky-offset);
    height: fit-content;
}

.content-center {
    grid-area: center;
    min-width: 0;
}

.item-nav-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.item-nav-btn {
    width: 100%;
    border: none;
    border-bottom: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    padding: 12px 14px;
    display: grid;
    grid-template-columns: 10px minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
    cursor: pointer;
    text-align: left;
}

.item-nav-btn:last-child {
    border-bottom: none;
}

.item-nav-btn.active,
.item-nav-btn:hover {
    background: var(--bg-row);
}

.item-nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.item-nav-label {
    min-width: 0;
}

.calc-nav-btn {
    grid-template-columns: minmax(0, 1fr);
}

.calc-nav-btn .item-nav-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-nav-count {
    color: var(--hint);
    font-size: 0.8rem;
}

.source-section {
    background: var(--bg-panel);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-left: 4px solid var(--section-color, var(--border));
}

.source-section:last-child {
    margin-bottom: 0;
}

.section-header {
    padding: 10px 16px;
    background: var(--bg-stat);
    border-bottom: 1px solid var(--border);
    border-radius: 20px;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
    cursor: pointer;
}

.section-header > span {
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.section-chev {
    font-size: 1rem;
    margin-left: 8px;
    transition: transform 0.18s;
    display: inline-block;
    transform: rotate(180deg);
}

.section-chev.collapsed {
    transform: rotate(0deg);
}

.engineering-planner-panel {
    margin-bottom: 16px;
}

.engineering-planner-header {
    position: static;
}

.engineering-planner-header-actions {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.engineering-planner-body {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.engineering-planner-note-warning {
    color: var(--gold-lt);
}

.engineering-planner-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 10px;
    margin-top: 18px;
}

.engineering-planner-sticky-tools {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.engineering-planner-sticky-tools > .engineering-mode-switch + .engineering-mode-switch {
    margin-top: -4px;
}

.engineering-mode-switch {
    display: inline-flex;
    gap: 6px;
    padding: 3px;
    align-self: flex-start;
    border: none;
    border-radius: 10px;
}

.engineering-mode-btn {
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 7px;
    padding: 7px 16px;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.55);
    font: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    white-space: nowrap;
}

.engineering-mode-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.10);
    color: rgba(255, 255, 255, 0.80);
    border-color: rgba(255, 255, 255, 0.18);
}

.engineering-mode-btn.active {
    background: var(--gold, #e8a820);
    color: #1a1520;
    font-weight: 700;
}

.engineering-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.engineering-planner-controls .engineering-field {
    flex: 0 0 auto;
    display: grid;
    grid-template-columns: minmax(9rem, 1fr);
    max-width: 100%;
}

.engineering-planner-controls .engineering-field-select {
    grid-template-columns: minmax(12rem, 1fr);
}

.engineering-planner-controls .engineering-field-control {
    width: 100%;
    min-width: 0;
    max-width: 100%;
}

.engineering-field-block {
    margin-bottom: 2px;
}

.engineering-field-label {
    color: var(--hint);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.engineering-planner-help-btn {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 3px 10px;
    cursor: pointer;
    color: var(--gold-lt);
    background: rgba(200, 160, 32, 0.08);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    font-family: inherit;
    line-height: 1.2;
    appearance: none;
    -webkit-appearance: none;
}

.engineering-planner-help-btn:hover,
.engineering-planner-help-btn:focus-visible {
    border-color: var(--gold);
    background: rgba(200, 160, 32, 0.2);
    outline: none;
}

.engineering-planner-help-btn-icon {
    min-width: 36px;
    min-height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1;
}

.engineering-input {
    width: auto;
    min-width: 0;
    background: var(--bg-row);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 9px 11px;
    color: var(--text);
    font: inherit;
    outline: none;
}

.engineering-input:focus {
    border-color: var(--gold);
}

.tools-input-surface,
.tools-number-input {
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 7px;
    color: var(--text);
    transition: border-color 0.15s;
}

.tools-input-filled,
.tools-number-input {
    background: rgba(0, 0, 0, 0.30);
}

.tools-input-full {
    width: 100%;
    min-width: 0;
}

select.tools-input-filled {
    background: #141126;
}

select.tools-input-filled option {
    background: #141126;
    color: var(--text);
}

.engineering-planner-controls .engineering-input {
    display: block;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}

.engineering-planner-controls select.engineering-input {
    min-inline-size: 0;
}

.engineering-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.engineering-planner-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
    margin-top: 18px;
}

.engineering-summary-chip {
    min-width: 0;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-stat);
    display: flex;
    flex-direction: column;
    gap: 3px;
    text-align: left;
    font: inherit;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.engineering-summary-chip-label {
    color: var(--hint);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.engineering-summary-chip-value {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 800;
    overflow-wrap: anywhere;
}

.engineering-summary-chip-anchor {
    border-color: var(--gold);
    box-shadow: inset 0 0 0 1px rgba(200, 160, 32, 0.18);
}

.engineering-summary-chip-muted {
    opacity: 0.48;
    filter: grayscale(1);
}

.engineering-summary-chip-overcap .engineering-summary-chip-value {
    color: #ff9a9a;
}

.engineering-summary-chip-starved {
    border-color: rgba(234, 171, 61, 0.72);
    box-shadow: inset 0 0 0 1px rgba(234, 171, 61, 0.26);
    background: color-mix(in srgb, var(--bg-stat) 84%, #e7a93d 16%);
}

.engineering-summary-chip-starved .engineering-summary-chip-value {
    color: #ffc864;
}

.engineering-summary-chip:hover,
.engineering-summary-chip:focus-visible {
    border-color: var(--gold);
    outline: none;
}

.engineering-card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px;
    background: var(--bg-row);
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

.engineering-card-anchor {
    border-color: var(--gold);
    box-shadow: inset 0 0 0 1px rgba(200, 160, 32, 0.22);
}

.engineering-card-muted {
    opacity: 0.42;
    filter: grayscale(1);
    background: color-mix(in srgb, var(--bg-row) 82%, #7f7f7f 18%);
    border-color: rgba(255, 255, 255, 0.08);
}

.engineering-card-blocking {
    border-color: rgba(208, 64, 64, 0.75);
    box-shadow: inset 0 0 0 1px rgba(208, 64, 64, 0.22);
}

.engineering-card-starved {
    border-color: rgba(234, 171, 61, 0.78);
    box-shadow: inset 0 0 0 1px rgba(234, 171, 61, 0.26);
    background: color-mix(in srgb, var(--bg-row) 88%, #e7a93d 12%);
}

.engineering-card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
}

.engineering-card-copy {
    flex: 1 1 auto;
    min-width: 0;
}

.engineering-card-title {
    color: var(--gold-lt);
    font-size: 0.98rem;
    font-weight: 800;
}

.engineering-card-recipe {
    color: var(--hint);
    font-size: 0.82rem;
    line-height: 1.35;
    margin-top: 2px;
    white-space: nowrap;
}

.engineering-card-badge {
    flex: 0 0 auto;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 3px 8px;
    cursor: pointer;
    color: var(--gold-lt);
    background: rgba(200, 160, 32, 0.08);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    font-family: inherit;
    line-height: 1.2;
    appearance: none;
    -webkit-appearance: none;
}

.engineering-card-anchor .engineering-card-badge {
    border-color: var(--gold);
    background: rgba(200, 160, 32, 0.16);
}

.engineering-card-badge:hover,
.engineering-card-badge:focus-visible {
    border-color: var(--gold);
    background: rgba(200, 160, 32, 0.2);
    outline: none;
}

.engineering-card-badge-static {
    cursor: default;
}

.engineering-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.engineering-stat {
    min-width: 0;
    background: var(--bg-stat);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 9px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.engineering-stat span {
    color: var(--hint);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.engineering-stat strong {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 800;
    overflow-wrap: anywhere;
}

.engineering-card-foot {
    color: var(--hint);
    font-size: 0.82rem;
    line-height: 1.4;
}

.engineering-planner-help-popover.popover {
    position: fixed;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: min(853px, calc(100vw - 48px)) !important;
    min-width: 0;
    max-width: calc(100vw - 48px) !important;
    height: min(80vh, calc(100vh - 32px));
    z-index: 520;
}

.engineering-planner-help-header {
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
}

.engineering-planner-help-body {
    padding: 12px 14px 14px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-gutter: stable;
    height: calc(min(80vh, calc(100vh - 32px)) - 54px);
}

.engineering-planner-help-copy {
    display: grid;
    gap: 8px;
    margin-top: 8px;
    margin-bottom: 12px;
    padding: 0 10px;
}

.engineering-planner-help-copy p {
    margin: 0;
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.45;
}

.engineering-planner-help-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.engineering-planner-help-table th,
.engineering-planner-help-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    text-align: left;
}

.engineering-planner-help-table th {
    color: var(--gold-lt);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.engineering-planner-help-table td:first-child,
.engineering-planner-help-table th:first-child {
    width: 28%;
}

.engineering-planner-help-table td {
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.45;
}

.engineering-planner-help-table tbody tr:last-child td {
    border-bottom: 0;
}

.engineering-mobile-sheet-body {
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    padding: 0 10px;
}

.engineering-mobile-sheet-content {
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: 90vh;
}

.engineering-planner-popover-sheet {
    display: flex;
    flex-direction: column;
}

.engineering-planner-sheet-head {
    gap: 10px;
}

.item-sheet {
    z-index: 500;
}

.item-sheet .mobile-drawer-body {
    overflow: hidden;
}

.item-popover {
    position: fixed;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    width: 340px;
}

.item-popover-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-stat);
    border-bottom: 1px solid var(--border);
    user-select: none;
}

.item-popover-name {
    font-size: 1rem;
    font-weight: 800;
    color: var(--gold-lt);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-popover-type {
    font-size: 1rem;
    font-weight: 600;
    color: var(--hint);
    margin-top: 2px;
}

.price-breakdown-popover-sheet {
    position: static;
    width: 100%;
    height: 100%;
    max-height: none;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    flex: 1 1 auto;
    min-height: 0;
}

.popover-header {
    padding: 10px 16px;
    background: var(--bg-stat);
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.popover-close {
    background: none;
    border: none;
    color: var(--hint);
    font-size: 1rem;
    cursor: pointer;
    font-family: inherit;
}

.about-shell {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-height: 100%;
}

.about-hero {
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 28px;
    background:
        radial-gradient(circle at top left, rgba(240, 192, 64, 0.22), transparent 34%),
        linear-gradient(180deg, rgba(28, 24, 54, 0.96), rgba(20, 17, 41, 0.92));
    box-shadow: 0 18px 40px rgba(8, 7, 16, 0.2);
}

.about-eyebrow {
    color: var(--gold-lt);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.about-hero::after {
    content: '';
    display: block;
    width: 92px;
    height: 3px;
    margin-top: 22px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--gold-lt), rgba(240, 192, 64, 0));
}

.about-title {
    margin-top: 10px;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.08;
    max-width: 14ch;
    text-wrap: balance;
}

.about-copy {
    max-width: 68ch;
    margin-top: 14px;
    color: #d4cfe9;
    font-size: 1rem;
    line-height: 1.7;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.about-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 220px;
    padding: 22px;
    border: 1px solid rgba(90, 80, 128, 0.9);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(28, 24, 54, 0.96), rgba(22, 18, 43, 0.96));
    color: var(--text);
    font: inherit;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.about-card:hover {
    transform: translateY(-2px);
    border-color: rgba(240, 192, 64, 0.4);
    box-shadow: 0 16px 32px rgba(8, 7, 16, 0.2);
}

.about-card strong {
    color: var(--gold-lt);
    font-size: 1.2rem;
}

.about-card span:last-child {
    color: #c8c2df;
    line-height: 1.6;
}

.about-card-kicker {
    color: #9e92d9;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 220;
    background: rgba(28, 24, 54, 0.96);
    border-bottom: var(--app-header-border-width) solid rgba(46, 40, 80, 0.92);
    backdrop-filter: blur(14px);
}

.app-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 0 var(--app-page-gutter);
    max-width: var(--app-page-max-wide);
    margin: 0 auto;
    width: 100%;
}

.mobile-header-bar {
    display: none;
}

.app-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1 1 auto;
    padding-right: 0;
}

.app-nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 14px;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: #c8c2df;
    font: inherit;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.18s ease, box-shadow 0.18s ease;
    box-shadow: inset 0 -2px 0 transparent;
}

.app-nav-link:hover {
    color: var(--text);
}

.app-nav-link.active {
    color: var(--gold-lt);
    box-shadow: inset 0 -2px 0 var(--gold-lt);
}

.app-nav-report {
    flex: 0 0 auto;
    min-height: 42px;
    padding-right: 0;
}

@media (min-width: 901px) {
    .mobile-drawer,
    .mobile-drawer-overlay,
    .mobile-topbar,
    .mobile-tabbar,
    .mobile-scroll-container,
    .mobile-item-browser {
        display: none;
    }
}

@media (max-width: 900px) {
    .app-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: var(--bg-panel);
        border-bottom: 1px solid var(--border);
        backdrop-filter: none;
    }

    .app-header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        padding: 0 12px;
    }

    .mobile-header-bar {
        display: flex;
        align-items: center;
        gap: 12px;
        width: 100%;
        min-width: 0;
    }

    .mobile-header-title {
        flex: 1 1 auto;
        min-width: 0;
        color: var(--gold-lt);
        font-size: 0.92rem;
        font-weight: 800;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mobile-header-inline-actions {
        display: none;
        align-items: center;
        justify-content: flex-end;
        gap: 8px;
        flex: 0 0 auto;
    }

    .mobile-header-inline-actions.bonuses-shell-inline-actions-visible {
        display: inline-flex;
    }

    .layout {
        display: none;
    }

    .sidebar-left {
        display: contents;
    }

    .mobile-topbar {
        display: flex;
        position: fixed;
        top: var(--app-mobile-header-height);
        left: 0;
        right: 0;
        background: var(--bg-panel);
        border-bottom: 1px solid var(--border);
        z-index: 100;
        align-items: stretch;
        flex-direction: column;
        min-height: var(--app-mobile-topbar-height);
        padding: 0 10px;
        gap: 0;
    }

    .mobile-panel {
        flex-shrink: 0;
        width: 100vw;
        height: 100%;
        scroll-snap-align: start;
        overflow-y: auto;
        padding: 10px;
    }

    .mobile-item-browser {
        position: fixed;
        top: var(--app-mobile-content-top);
        left: 0;
        right: 0;
        height: calc(100vh - var(--app-mobile-content-top));
        height: calc(100dvh - var(--app-mobile-content-top));
        overflow-y: auto;
        padding: 10px 10px calc(18px + env(safe-area-inset-bottom, 0px));
        box-sizing: border-box;
        overscroll-behavior-y: contain;
    }

    .about-mobile-browser {
        display: block;
        position: fixed;
        top: var(--app-mobile-header-height);
        left: 0;
        right: 0;
        height: calc(100vh - var(--app-mobile-header-height));
        height: calc(100dvh - var(--app-mobile-header-height));
        overflow-y: auto;
        padding: 10px 10px calc(18px + env(safe-area-inset-bottom, 0px));
        box-sizing: border-box;
        overscroll-behavior-y: contain;
    }

    .about-mobile-browser .about-shell {
        min-height: auto;
        justify-content: flex-start;
        gap: 16px;
    }

    .about-hero {
        padding: 22px 20px;
        border-radius: 22px;
    }

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

    .about-card {
        min-height: 0;
        padding: 18px;
        border-radius: 18px;
    }

    .mobile-dropdown.open {
        position: fixed;
        top: calc(var(--app-mobile-content-top) + 1px);
        left: 0;
        right: 0;
        bottom: 0;
        max-height: none;
    }

    .mobile-dropdown-with-tabbar.open {
        bottom: 64px;
    }

    .item-nav-panel .item-nav-btn {
        padding-left: 12px;
        padding-right: 12px;
    }

    .engineering-planner-body {
        padding-top: 10px;
    }

    .engineering-planner-sticky-tools {
        position: sticky;
        top: 0;
        z-index: 3;
        backdrop-filter: blur(8px);
    }

    .engineering-stats {
        grid-template-columns: 1fr;
    }

    .engineering-planner-controls {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .engineering-planner-controls .engineering-field,
    .engineering-planner-controls .engineering-field-control,
    .engineering-planner-controls .engineering-input,
    .engineering-planner-controls .engineering-field:first-child .engineering-input,
    .engineering-planner-controls .engineering-field:last-child .engineering-input {
        width: 100%;
    }

    .engineering-planner-summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .engineering-summary-chip {
        padding: 7px 9px;
    }

    .engineering-summary-chip-label {
        font-size: 0.68rem;
    }

    .engineering-summary-chip-value {
        font-size: 0.86rem;
    }

    .engineering-card-grid {
        display: none;
    }

    .engineering-mobile-sheet .engineering-stats {
        grid-template-columns: 1fr;
    }

    .engineering-planner-help-popover {
        display: none;
    }

    .engineering-planner-help-table,
    .engineering-planner-help-table thead,
    .engineering-planner-help-table tbody,
    .engineering-planner-help-table tr,
    .engineering-planner-help-table th,
    .engineering-planner-help-table td {
        display: block;
        width: 100%;
    }

    .engineering-planner-help-table thead {
        display: none;
    }

    .engineering-planner-help-table tr {
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
    }

    .engineering-planner-help-table tbody tr:last-child {
        border-bottom: 0;
    }

    .engineering-planner-help-table td {
        padding: 0;
        border-bottom: 0;
    }

    .engineering-planner-help-table td:first-child {
        width: 100%;
        color: var(--gold-lt);
        font-size: 0.78rem;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        margin-bottom: 6px;
    }

    .mobile-header-burger {
        width: 40px;
        height: 40px;
        flex: 0 0 auto;
        border: 1px solid var(--border);
        border-radius: 12px;
        background: var(--bg-row);
        color: var(--text);
        font: inherit;
        font-size: 1.25rem;
        line-height: 1;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0;
        cursor: pointer;
        touch-action: manipulation;
    }

    .app-nav {
        display: none;
    }

    .app-nav-report {
        display: none;
    }

    .mobile-settings-btn {
        width: 40px;
        height: 40px;
        flex: 0 0 auto;
        border: 1px solid var(--border);
        border-radius: 12px;
        background: var(--bg-row);
        color: var(--text);
        font: inherit;
        font-size: 1.1rem;
        line-height: 1;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0;
        cursor: pointer;
        touch-action: manipulation;
    }

    .mobile-header-settings-btn {
        margin-left: auto;
    }

    .mobile-header-inline-actions .mode-group {
        background: transparent;
        border: none;
        border-radius: 0;
        padding: 0;
        gap: 8px;
    }

    .mobile-header-inline-actions .gmode-btn {
        min-width: 72px;
        min-height: 40px;
        padding: 10px 16px;
        border-radius: 14px;
        font-size: 0.95rem;
        line-height: 1;
    }

    .mobile-drawer-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 300;
    }

    .mobile-drawer {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 90vh;
        background: var(--bg-panel);
        border-radius: 20px 20px 0 0;
        z-index: 400;
        overflow: hidden;
        padding: 0;
        flex-direction: column;
        gap: 0;
        transform: translateY(100%);
        transition: transform 0.3s ease;
    }

    .mobile-drawer-header {
        padding: 12px 16px 0;
        flex-shrink: 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
        position: relative;
    }

    .mobile-drawer-body {
        overflow-y: auto;
        overflow-x: hidden;
        padding: 12px 16px 32px;
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .mobile-drawer-title {
        color: var(--gold-lt);
        font-size: 0.95rem;
        font-weight: 800;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .mobile-drawer-nav {
        display: grid;
        gap: 8px;
        padding-bottom: 4px;
    }

    .mobile-drawer-nav-btn {
        display: flex;
        align-items: center;
        width: 100%;
        min-height: 44px;
        padding: 0 14px;
        border: 1px solid var(--border);
        border-radius: 12px;
        background: var(--bg-row);
        color: #d7d1eb;
        font: inherit;
        font-size: 0.95rem;
        font-weight: 800;
        text-align: left;
        text-decoration: none;
        cursor: pointer;
    }

    .mobile-drawer-nav-btn.active {
        border-color: rgba(240, 192, 64, 0.55);
        color: var(--gold-lt);
        background: rgba(240, 192, 64, 0.1);
    }

    .mobile-drawer-nav + .mobile-drawer-report {
        margin-top: 4px;
    }

    .mobile-drawer-handle {
        width: 40px;
        height: 4px;
        background: var(--hint-old);
        border-radius: 2px;
        margin: 0 auto 16px;
        flex-shrink: 0;
    }

    .mobile-drawer-close {
        position: absolute;
        top: 12px;
        right: 16px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 0;
        border-radius: 999px;
        background: var(--bg-row);
        color: var(--hint);
        font: inherit;
        font-size: 1rem;
        cursor: pointer;
        z-index: 1;
    }

    .mobile-drawer.open {
        display: flex;
        transform: translateY(0);
    }

    .mobile-drawer-overlay.open {
        display: block;
    }

    .mobile-drawer-report {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 16px;
        background: var(--bg-row);
        border: 1px solid var(--border);
        border-radius: 12px;
        color: var(--text);
        text-decoration: none;
        font-size: 1rem;
        font-weight: 700;
    }

    .shell-loader-panel {
        min-width: 0;
        width: min(220px, 100%);
        padding: 20px 18px;
    }

    .shell-loader-frame-host {
        width: min(132px, 42vw);
    }
}

@media (min-width: 901px) {
    .mobile-topbar,
    .mobile-panel,
    .mobile-item-browser {
        display: none;
    }

    .engineering-mobile-sheet,
    .engineering-mobile-sheet-overlay {
        display: none !important;
    }
}