:root {
    --bg: #080b0f;
    --bg-soft: rgba(12, 15, 20, 0.92);
    --panel: rgba(7, 10, 14, 0.88);
    --panel-2: rgba(11, 14, 19, 0.95);
    --panel-border: rgba(197, 129, 39, 0.35);
    --panel-line: rgba(255, 255, 255, 0.08);
    --text: #efe6d6;
    --muted: #b8ab96;
    --orange: #e88c1f;
    --orange-2: #ffad39;
    --orange-soft: rgba(232, 140, 31, 0.18);
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
    --radius: 10px;
    --heading-font: 'Teko', Impact, sans-serif;
    --body-font: 'Barlow Condensed', 'Segoe UI', sans-serif;
}

html, body {
    background: #05070a;
    color: var(--text);
}
body {
    font-family: var(--body-font);
    letter-spacing: 0.02em;
    position: relative;
    overflow-x: hidden;
}
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(2,4,7,0.88), rgba(4,5,8,0.58) 16%, rgba(3,4,6,0.55) 100%),
        radial-gradient(circle at 50% 15%, rgba(222,110,17,0.22), transparent 38%),
        url('../game/backgrounds/background_home_dark_market.webp') center center / cover no-repeat;
    z-index: -3;
}
body.aib-view-home::before { background: linear-gradient(180deg, rgba(2,4,7,0.82), rgba(4,5,8,0.44) 16%, rgba(3,4,6,0.42) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.22), transparent 38%), url('../game/backgrounds/background_home_dark_market.webp') center center / cover no-repeat; }
body.aib-view-start-menu::before { background: linear-gradient(180deg, rgba(2,4,7,0.86), rgba(4,5,8,0.50) 16%, rgba(3,4,6,0.52) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.18), transparent 38%), url('../game/backgrounds/background_start_menu_dark_market.webp') center center / cover no-repeat; }
body.aib-view-hero-select::before { background: linear-gradient(180deg, rgba(2,4,7,0.88), rgba(4,5,8,0.54) 16%, rgba(3,4,6,0.58) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.16), transparent 38%), url('../game/backgrounds/background_hero_select_stronghold.webp') center center / cover no-repeat; }
body.aib-view-scoreboard::before { background: linear-gradient(180deg, rgba(2,4,7,0.84), rgba(4,5,8,0.48) 16%, rgba(3,4,6,0.54) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.14), transparent 38%), url('../game/backgrounds/background_scoreboard_guildhall.webp') center center / cover no-repeat; }
body.aib-view-profile::before { background: linear-gradient(180deg, rgba(2,4,7,0.84), rgba(4,5,8,0.46) 16%, rgba(3,4,6,0.52) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.14), transparent 38%), url('../game/backgrounds/background_profile_guildhall.webp') center center / cover no-repeat; }
body.aib-view-shop::before { background: linear-gradient(180deg, rgba(2,4,7,0.87), rgba(4,5,8,0.56) 16%, rgba(3,4,6,0.58) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.16), transparent 38%), url('../game/backgrounds/background_shop_workshop.webp') center center / cover no-repeat; }
body.aib-view-battle::before,
body.aib-view-battle-result::before { background: linear-gradient(180deg, rgba(2,4,7,0.86), rgba(4,5,8,0.52) 16%, rgba(3,4,6,0.60) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.16), transparent 38%), url('../game/backgrounds/background_battle_ruins.webp') center center / cover no-repeat; }
body.aib-view-build-share::before { background: linear-gradient(180deg, rgba(2,4,7,0.86), rgba(4,5,8,0.48) 16%, rgba(3,4,6,0.54) 100%), radial-gradient(circle at 50% 15%, rgba(222,110,17,0.16), transparent 38%), url('../game/backgrounds/background_summary_guildhall.webp') center center / cover no-repeat; }

.screen-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -2;
    background-image:
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 4px 4px, 4px 4px;
    opacity: .08;
    mix-blend-mode: soft-light;
}

.app-shell-concept {
    width: min(1680px, calc(100% - 18px));
    margin: 10px auto;
}
.concept-page {
    padding: 14px 0 20px;
}

.concept-topbar {
    height: 74px;
    padding: 0 18px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    background:
        linear-gradient(180deg, rgba(18,21,27,0.96), rgba(8,10,14,0.94)),
        linear-gradient(90deg, rgba(255,255,255,0.04), transparent 12%, transparent 88%, rgba(255,255,255,0.04));
    box-shadow: 0 12px 36px rgba(0,0,0,0.35), inset 0 0 0 1px rgba(232,140,31,0.08);
    position: sticky;
    top: 8px;
    z-index: 20;
}
.concept-brand {
    gap: 14px;
}
.concept-brand-mark {
    width: 112px;
    height: 52px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.08);
    background: linear-gradient(180deg, #2b2a28, #101114 46%, #171412), linear-gradient(135deg, rgba(255,174,77,0.15), transparent);
    color: var(--orange-2);
    font-family: var(--heading-font);
    font-size: 2.05rem;
    letter-spacing: 0.05em;
    text-shadow: 0 2px 0 rgba(0,0,0,0.65), 0 0 16px rgba(232,140,31,0.18);
    box-shadow: inset 0 0 0 2px rgba(0,0,0,0.32), inset 0 0 0 3px rgba(232,140,31,0.10);
}
.brand-title {
    font-size: 1.15rem;
    color: #efe7da;
    letter-spacing: 0.03em;
}
.concept-nav {
    justify-content: center;
    gap: 22px;
}
.concept-nav a,
.concept-nav a:not(.btn) {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 24px 8px 18px;
    color: rgba(239, 230, 214, 0.86);
    border-radius: 0;
    border-bottom: 3px solid transparent;
    background: transparent !important;
    text-transform: none;
    font-size: 1.05rem;
}
.concept-nav a i { font-size: 0.95rem; opacity: .8; }
.concept-nav a.is-active,
.concept-nav a:hover {
    color: var(--orange-2);
    border-bottom-color: var(--orange);
}
.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}
.topbar-usercard {
    min-width: 232px;
    height: 42px;
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 4px;
    background: rgba(10,13,17,0.75);
    color: #e9dfd0;
    box-shadow: inset 0 0 0 1px rgba(232,140,31,0.05);
}
.topbar-icon-btn {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-items: center;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(10,13,17,0.75);
    color: #d9d0c2;
}
.topbar-icon-btn:hover { color: var(--orange-2); border-color: rgba(232,140,31,0.35); }
.btn-login-concept { min-height: 48px; padding-inline: 18px; }

.card,
.menu-card,
.shop-item,
.storage-item-card,
.workbench-job-card,
.craft-recipe,
.dock-tab,
.toolbar-pill,
.topbar-usercard,
.stats-list div,
.life-display,
.inventory-dock,
.battle-log li,
.table-card,
.hero-choice,
.battle-actor,
.summary-panel,
.scoreboard-meta-strip > div,
.concept-feature-strip article,
.concept-footer,
.result-grid > article,
.profile-card,
.alert-card {
    background: linear-gradient(180deg, rgba(13,16,21,0.95), rgba(7,9,13,0.92));
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: inset 0 0 0 1px rgba(232,140,31,0.08), var(--shadow);
}
.card,
.menu-card,
.shop-item,
.table-card,
.hero-choice,
.battle-actor,
.summary-panel,
.result-grid > article,
.profile-card { border-radius: 10px; }

h1, h2, h3, .brand-mark, .rank-badge, .btn, .eyebrow, .screen-badge, .topbar-usercard span,
.shop-heading h1, .page-heading h1, .hero-copy h1 {
    font-family: var(--heading-font);
    letter-spacing: 0.03em;
}
.hero-copy h1,
.page-heading h1 {
    text-transform: uppercase;
    line-height: 0.86;
    color: #f6ead6;
    text-shadow: 0 2px 0 rgba(0,0,0,.6);
}
.hero-copy h1 { font-size: clamp(4rem, 9vw, 7.2rem); margin-bottom: 18px; }
.page-heading h1 { font-size: clamp(3.4rem, 8vw, 5.5rem); margin-bottom: 8px; }
.page-heading p,
.hero-copy .lead,
.muted,
small,
.shop-item small,
.inventory-help,
.life-display p,
.timeline-list,
.concept-feature-strip p { color: var(--muted); }
.eyebrow,
.screen-badge {
    color: var(--orange-2);
    font-size: 1.55rem;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}
.screen-badge { display: inline-block; margin-bottom: 6px; }

.btn {
    min-height: 46px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.10);
    padding: 10px 18px;
    text-transform: uppercase;
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,.25), 0 8px 20px rgba(0,0,0,.25);
}
.btn i { font-size: 0.95rem; }
.btn-primary {
    color: #fff1dc;
    background: linear-gradient(180deg, #d67b16, #b85d09);
    border-color: rgba(255, 184, 93, 0.36);
}
.btn-secondary, .btn-ghost {
    color: #efe6d7;
    background: linear-gradient(180deg, rgba(33,38,46,0.96), rgba(14,17,22,0.94));
    border-color: rgba(255,255,255,0.10);
}
.btn-danger {
    color: #ffd9d9;
    background: linear-gradient(180deg, rgba(102,31,25,0.96), rgba(73,21,17,0.94));
    border-color: rgba(255,126,126,0.22);
}
.btn-disabled { background: rgba(30,33,39,.8); border-color: rgba(255,255,255,0.06); }

.concept-title-block { margin-bottom: 18px; }
.landing-scene { display: grid; gap: 18px; }
.concept-landing-grid {
    min-height: 60vh;
    grid-template-columns: minmax(0, 1.08fr) minmax(420px, .64fr);
    align-items: center;
    gap: 36px;
    padding: 28px 24px 0;
}
.concept-landing-copy { max-width: 780px; }
.concept-landing-copy .lead { font-size: 1.55rem; max-width: 680px; }
.concept-hero-actions { margin-top: 28px; }
.concept-loop-card { padding: 18px 22px 22px; }
.concept-loop-card h2 { margin: 0 0 10px; font-size: 2rem; color: #efdfc1; }
.concept-timeline-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 8px;
}
.concept-timeline-list li {
    display: grid;
    grid-template-columns: 28px 20px 1fr;
    gap: 12px;
    align-items: center;
    min-height: 48px;
    padding: 0 8px 0 0;
    font-size: 1.18rem;
    border-top: 1px solid rgba(255,255,255,.06);
}
.concept-timeline-list li:first-child { border-top: 0; }
.concept-timeline-list li > span {
    width: 28px; height: 28px; border-radius: 4px;
    display: grid; place-items: center;
    border: 1px solid rgba(232,140,31,0.45);
    color: var(--orange-2);
    font-family: var(--heading-font);
    font-size: 1.25rem;
}
.concept-timeline-list i { color: #ead5b3; }

.concept-feature-strip {
    display: grid;
    grid-template-columns: 1.2fr repeat(6, minmax(0, 1fr));
    gap: 0;
    padding: 0;
    overflow: hidden;
}
.concept-feature-strip article {
    min-height: 172px;
    padding: 18px 16px;
    border: 0;
    border-right: 1px solid rgba(255,255,255,.06);
    box-shadow: none;
    background: transparent;
}
.concept-feature-strip article:last-child { border-right: 0; }
.concept-feature-strip h3,
.concept-feature-strip h4 { margin: 0 0 6px; color: var(--orange-2); font-size: 1.65rem; }
.concept-feature-strip i {
    font-size: 2rem;
    color: #d6a159;
    margin-bottom: 10px;
}
.concept-feature-strip p { font-size: 1.1rem; line-height: 1.35; margin: 0; }

.concept-menu-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}
.concept-menu-grid .menu-card {
    min-height: 148px;
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.concept-menu-grid .menu-card i { font-size: 1.6rem; color: var(--orange-2); margin-bottom: 10px; }
.concept-menu-grid .menu-card span { font-size: 1.8rem; color: #f2e3c8; }
.concept-menu-grid .menu-card small { font-size: 1rem; }
.concept-menu-grid .menu-card.primary {
    background: linear-gradient(180deg, rgba(62,36,14,0.92), rgba(26,16,10,0.94));
    border-color: rgba(255,176,78,0.34);
}
.concept-run-status-panel {
    align-items: center;
    padding: 18px 22px;
}
.menu-run-status-panel h2 { font-size: 2.2rem; margin: 0; }
.menu-run-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.hero-select-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.hero-choice {
    overflow: hidden;
    padding: 0;
    gap: 0;
}
.hero-choice-art {
    position: relative;
    min-height: 280px;
    background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(232,140,31,.04));
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.hero-choice-art > img:not(.hero-class-emblem) {
    width: 100%; height: 100%; object-fit: cover; object-position: center top;
}
.hero-class-emblem {
    position: absolute; top: 14px; right: 14px; width: 64px; height: 64px;
    object-fit: contain; filter: drop-shadow(0 8px 14px rgba(0,0,0,0.45));
}
.hero-choice-body { padding: 16px; }
.hero-choice-title-row { display: flex; align-items: center; gap: 12px; }
.hero-choice-title-row h2 { font-size: 2rem; color: var(--orange-2); margin: 0; }
.hero-mini-icon { width: 48px; height: 48px; object-fit: contain; }
.passive-box { background: rgba(255,255,255,.03); border-color: rgba(255,255,255,.06); }
.stat-pills span, .tag-cloud span, .mini-item {
    border-radius: 4px;
    background: rgba(16,18,23,0.96);
    border-color: rgba(255,255,255,.08);
    color: #dfd3c1;
}

.scoreboard-meta-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 14px;
}
.scoreboard-meta-strip > div {
    padding: 14px 16px;
    display: grid;
    grid-template-columns: 20px auto;
    gap: 2px 12px;
    align-items: center;
}
.scoreboard-meta-strip i { color: #ccb695; font-size: 1rem; grid-row: span 2; }
.scoreboard-meta-strip span { color: var(--muted); font-size: 0.95rem; }
.scoreboard-meta-strip strong { color: #f0e2c6; font-size: 1.25rem; }
.scoreboard-toolbar {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    margin-bottom: 12px;
}
.toolbar-pill {
    min-height: 42px; padding: 0 14px; display: inline-flex; align-items: center; gap: 8px; border-radius: 6px;
}
.toolbar-pill-accent { color: var(--orange-2); }
.table-card { padding: 16px; }
.responsive-table table { width: 100%; border-collapse: collapse; }
.responsive-table th,
.responsive-table td {
    border-bottom: 1px solid rgba(255,255,255,.06);
    padding: 12px 14px;
    text-align: left;
    font-size: 1.14rem;
}
.responsive-table th {
    color: #ddd0ba;
    font-family: var(--heading-font);
    text-transform: uppercase;
    letter-spacing: .04em;
    font-size: 1.25rem;
}
.responsive-table tr.is-podium { background: linear-gradient(90deg, rgba(232,140,31,.13), transparent 65%); }
.rank-badge {
    display: inline-flex; align-items: center; justify-content: center; min-width: 42px; height: 32px;
    border-radius: 5px; background: rgba(232,140,31,.15); color: var(--orange-2); border: 1px solid rgba(232,140,31,.28);
}
.table-hero-cell { display: inline-flex; align-items: center; gap: 10px; }
.table-hero-cell img { width: 40px; height: 40px; object-fit: cover; border-radius: 4px; }
.table-action-link {
    display: inline-flex; align-items: center; justify-content: center; min-width: 96px; height: 34px;
    border-radius: 5px; border: 1px solid rgba(232,140,31,.32); color: var(--orange-2);
    background: rgba(232,140,31,.08);
}

.concept-profile-grid {
    grid-template-columns: .9fr 1.6fr;
    gap: 18px;
}
.concept-profile-card { padding: 20px; }
.profile-card-head {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 18px;
    align-items: start;
}
.profile-card-head img,
.profile-card .profile-avatar-fallback {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,.08);
}
.profile-card-head h2 { font-size: 2.2rem; color: #f4e6cd; margin: 0 0 6px; }
.profile-quote { margin-top: 26px; color: var(--muted); font-style: italic; }
.concept-latest-run-card { padding: 20px; }
.concept-latest-run-card h2 { margin-top: 0; font-size: 2rem; color: var(--orange-2); }
.stats-list div {
    min-height: 44px;
    padding: 10px 14px;
    margin-bottom: 8px;
    border-radius: 6px;
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.stats-list dt { color: #d6c4aa; }
.stats-list dd { margin: 0; color: #f7e6c8; font-weight: 700; }

.shop-heading,
.battle-heading {
    align-items: flex-start;
    margin-bottom: 14px;
}
.shop-heading h1,
.battle-heading h1 { font-size: clamp(2.8rem, 5vw, 4.5rem); }
.shop-layout {
    grid-template-columns: minmax(320px, 1fr) minmax(520px, 1.05fr) minmax(320px, .72fr);
    gap: 14px;
}
.shop-item,
.storage-item-card,
.workbench-job-card,
.craft-recipe,
.inventory-panel,
.stats-panel,
.shop-panel,
.battle-actor,
.battle-log-panel,
.summary-panel {
    border-radius: 8px;
}
.shop-panel,
.inventory-panel,
.stats-panel {
    padding: 14px;
}
.shop-item { padding: 10px 10px 12px; }
.shop-item strong { font-size: 1.18rem; color: #f0e1c4; }
.shop-item p { font-size: 1rem; line-height: 1.2; }
.shop-item-art {
    min-height: 92px;
    border-radius: 6px;
    background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(232,140,31,.035));
    border: 1px solid rgba(255,255,255,.06);
}
.inventory-grid {
    --slot-size: 50px;
    gap: 4px;
}
.grid-cell {
    border-radius: 4px;
    border-color: rgba(255,255,255,.07);
    background: rgba(3,5,7,.72);
}
.grid-cell.is-unlocked { border-color: rgba(255,255,255,.12); background: rgba(9,12,16,.86); }
.grid-cell.is-bag-cell { background: rgba(70,48,22,.8); border-color: rgba(255,174,77,.34); }
.grid-cell.is-preview-valid { background: rgba(74,120,72,.35); }
.grid-cell.is-preview-invalid { background: rgba(123,52,42,.35); }
.inventory-item-cell {
    border-radius: 5px;
    border-color: rgba(255,255,255,.10);
    background: linear-gradient(180deg, rgba(24,28,35,0.94), rgba(10,13,18,0.90));
}
.inventory-item-cell.rarity-legendary,
.shop-item.rarity-legendary { box-shadow: inset 0 0 0 1px rgba(255,183,89,.18), 0 0 0 1px rgba(255,183,89,.25); }
.inventory-title-row span,
.panel-title-row span,
.inventory-resource-strip span,
.dock-panel-head span,
.battle-log-titlebar span,
.summary-result span { color: var(--muted); }
.inventory-dock {
    margin-top: 14px;
    border-radius: 8px;
    overflow: hidden;
}
.dock-tabbar {
    background: rgba(5,7,9,.72);
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.dock-tab,
.dock-collapse {
    min-height: 42px;
    border-radius: 0;
    background: transparent;
    border: 0;
    color: #dfd2bc;
}
.dock-tab.is-active { background: rgba(232,140,31,.12); color: var(--orange-2); }
.link-button { color: var(--orange-2); }

.life-display {
    border-radius: 8px;
    padding: 12px 14px;
}
.life-display-head strong { color: #f6e2bf; font-family: var(--heading-font); font-size: 1.5rem; }
.life-pip { border-radius: 4px; }
.life-pip.is-active { background: linear-gradient(180deg, #ffb25d, #d9760d); }
.life-overflow { color: var(--orange-2); }

.battle-stage {
    display: grid;
    grid-template-columns: minmax(300px, .85fr) minmax(520px, 1.2fr) minmax(300px, .85fr);
    gap: 14px;
    align-items: start;
}
.battle-actor { padding: 14px; }
.battle-log-panel { padding: 14px; min-height: 470px; }
.battle-log-panel .battle-log-titlebar,
.summary-panel h2,
.battle-actor h2,
.inventory-panel h2,
.stats-panel h2,
.shop-panel h2 { color: #f1deba; }
.battle-log-panel .battle-progress {
    border-radius: 4px;
    overflow: hidden;
    background: rgba(255,255,255,.05);
}
.battle-log-panel .battle-progress > span { background: linear-gradient(90deg, #c06d11, #ffad39); }
.battle-log {
    padding-left: 0;
    list-style: none;
    margin: 12px 0 0;
    display: grid; gap: 8px;
}
.battle-log li {
    padding: 10px 12px;
    border-radius: 6px;
    display: grid;
    grid-template-columns: 68px minmax(112px, 168px) 1fr;
    gap: 10px;
    align-items: center;
}
.battle-log li strong { color: #f1dfc0; }
.battle-log li p { margin: 0; color: #d8c8af; }
.summary-panel {
    margin-top: 14px;
    padding: 16px;
}
.summary-panel h2 { font-size: 1.8rem; margin-top: 0; }
.summary-actions .btn { min-width: 220px; }

.concept-footer {
    margin-top: 14px;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: hidden;
    border-radius: 10px;
}
.concept-footer > div {
    min-height: 52px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
    border-right: 1px solid rgba(255,255,255,.06);
    color: #e7dac3;
    font-size: 1.05rem;
}
.concept-footer > div:last-child { border-right: 0; color: var(--orange-2); }
.concept-footer i { color: #ca9c58; }

.toast { font-family: var(--body-font); }

@media (max-width: 1360px) {
    .concept-landing-grid,
    .shop-layout,
    .battle-stage,
    .concept-profile-grid,
    .hero-select-grid,
    .scoreboard-meta-strip,
    .concept-feature-strip {
        grid-template-columns: 1fr;
    }
    .concept-topbar {
        height: auto;
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px 14px;
    }
    .concept-nav { justify-content: flex-start; flex-wrap: wrap; }
    .topbar-right { justify-content: flex-start; }
    .concept-menu-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .concept-footer { grid-template-columns: 1fr 1fr; }
    .profile-card-head { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .app-shell-concept { width: min(100%, calc(100% - 10px)); margin: 5px auto; }
    .concept-menu-grid,
    .concept-footer { grid-template-columns: 1fr; }
    .hero-copy h1 { font-size: 4rem; }
    .page-heading h1 { font-size: 3.6rem; }
    .responsive-table { overflow-x: auto; }
    .battle-log li { grid-template-columns: 1fr; }
    .topbar-usercard { min-width: 0; width: 100%; }
}