.v4-topic {
    --v4-orange: #ff7a21;
    --v4-orange-dark: #e65316;
    --v4-ink: #262129;
    --v4-muted: #746b72;
    --v4-line: rgba(88, 68, 56, .12);
    --v4-panel: rgba(255, 255, 255, .92);
    --v4-soft: #fff8ee;
    color: var(--v4-ink);
    background:
        radial-gradient(circle at 8% 18%, rgba(255, 185, 92, .12), transparent 24rem),
        linear-gradient(180deg, #fffaf4 0, #fff 34rem, #fffaf6 100%);
    min-height: 70vh;
}

.v4-topic *, .v4-topic *::before, .v4-topic *::after { box-sizing: border-box; }
.v4-topic a { color: inherit; text-decoration: none; }
.v4-topic img { display: block; max-width: 100%; }
.v4-topic [hidden] { display: none !important; }
.v4-topic .layout-shell { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.v4-topic__shell { padding: 0 0 72px; }
.skill-game-icon { image-rendering: pixelated; }

.v4-hero {
    position: relative;
    overflow: hidden;
    min-height: 560px;
    isolation: isolate;
    background:
        linear-gradient(100deg, rgba(30, 34, 39, .76) 0%, rgba(43, 47, 52, .56) 48%, rgba(36, 41, 46, .38) 100%),
        url('/public/assets/images/zt/v4-hero-bg.webp') center center / cover no-repeat;
}
.v4-hero::before, .v4-hero::after { content: ""; position: absolute; border-radius: 50%; z-index: -1; }
.v4-hero::before { width: 520px; height: 520px; right: -90px; top: -190px; border: 90px solid rgba(255,255,255,.09); }
.v4-hero::after { width: 380px; height: 380px; left: -170px; bottom: -250px; border: 70px solid rgba(120,42,0,.09); }
.v4-hero__inner { min-height: 560px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr); align-items: center; gap: 64px; padding-block: 70px 96px; }
.v4-hero__copy { color: #fff; }
.v4-kicker { display: flex; align-items: center; gap: 12px; width: fit-content; margin-bottom: 18px; font-size: 13px; font-weight: 800; letter-spacing: .09em; }
.v4-kicker span { padding: 7px 11px; border: 1px solid rgba(255,255,255,.52); border-radius: 8px; background: rgba(104,34,0,.13); }
.v4-kicker i { width: 18px; height: 1px; background: rgba(255,255,255,.7); }
.v4-hero h1 { margin: 0; font-size: clamp(46px, 5vw, 68px); line-height: .98; font-weight: 950; letter-spacing: -.055em; white-space: nowrap; text-shadow: 0 6px 20px rgba(112,36,0,.18); }
.v4-hero h1 em { color: #fff3a4; font-style: normal; }
.v4-hero__copy > p { max-width: 630px; margin: 24px 0 0; color: rgba(255,255,255,.92); font-size: 18px; line-height: 1.85; }
.v4-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.v4-button { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 0 22px; border-radius: 10px; font-size: 14px; font-weight: 800; transition: .18s ease; }
.v4-button:hover { transform: translateY(-2px); }
.v4-button--primary { background: #fff; color: #e95518 !important; box-shadow: 0 12px 26px rgba(100,31,0,.18); }
.v4-button--ghost { border: 1px solid rgba(255,255,255,.55); background: rgba(117,40,0,.12); color: #fff !important; }
.v4-hero__metrics { display: flex; gap: 34px; margin-top: 38px; }
.v4-hero__metrics span { display: flex; align-items: baseline; gap: 8px; }
.v4-hero__metrics b { font-size: 25px; }
.v4-hero__metrics small { color: rgba(255,255,255,.72); font-size: 12px; }

.v4-hero__visual { position: relative; width: 390px; aspect-ratio: 1; justify-self: end; }
.v4-matrix-orbit { position: absolute; inset: 12%; border: 1px solid rgba(255,255,255,.34); border-radius: 31%; transform: rotate(45deg); box-shadow: inset 0 0 60px rgba(255,255,255,.07), 0 0 0 30px rgba(255,255,255,.045); }
.v4-matrix-orbit::before, .v4-matrix-orbit::after { content: ""; position: absolute; inset: 18%; border: 1px dashed rgba(255,255,255,.28); border-radius: 50%; }
.v4-matrix-orbit::after { inset: -24%; border-style: solid; opacity: .4; }
.v4-matrix-core { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%); width: 130px; aspect-ratio: 1; display: grid; place-content: center; text-align: center; border: 2px solid rgba(255,255,255,.72); border-radius: 22px; background: #ffc24c; color: #c64611; font-size: 54px; line-height: .8; font-weight: 950; box-shadow: 0 12px 28px rgba(112,35,0,.18); }
.v4-matrix-core small { margin-top: 12px; color: #ab4b20; font-size: 10px; letter-spacing: .18em; }
.v4-orbit-icon { --angle: calc(var(--i) * 45deg); position: absolute; left: calc(50% + cos(var(--angle)) * 44%); top: calc(50% + sin(var(--angle)) * 44%); width: 62px; padding: 6px; transform: translate(-50%,-50%); border-radius: 15px; background: rgba(255,255,255,.94); box-shadow: 0 12px 22px rgba(95,31,0,.2); }
.v4-orbit-icon img { width: 50px; aspect-ratio: 1; object-fit: contain; }

.v4-jump { position: sticky; top: 64px; z-index: 20; display: flex; justify-content: center; gap: 4px; width: fit-content; max-width: 100%; margin: -28px auto 48px; padding: 7px; overflow-x: auto; border: 1px solid var(--v4-line); border-radius: 14px; background: rgba(255,255,255,.92); box-shadow: 0 14px 32px rgba(90,57,36,.1); backdrop-filter: blur(14px); }
.v4-jump a { flex: none; padding: 10px 17px; border-radius: 9px; color: #60555b; font-size: 13px; font-weight: 750; white-space: nowrap; }
.v4-jump a:hover { background: #fff2e2; color: var(--v4-orange-dark); }
.v4-section { scroll-margin-top: 134px; margin-top: 76px; }
.v4-section__head { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.v4-section__head > span { display: grid; place-items: center; width: 45px; aspect-ratio: 1; flex: none; border-radius: 13px; background: #fff0df; color: var(--v4-orange-dark); font-size: 13px; font-weight: 900; }
.v4-section__head p { margin: 0 0 3px; color: var(--v4-orange); font-size: 10px; font-weight: 850; letter-spacing: .16em; }
.v4-section__head h2 { margin: 0; font-size: clamp(24px, 3vw, 34px); line-height: 1.2; letter-spacing: -.025em; }
.v4-section__head > small { margin-left: auto; color: var(--v4-muted); }
.v4-section__head > small b { color: var(--v4-orange-dark); font-size: 20px; }

.v4-overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.v4-overview-card { display: grid; grid-template-columns: 94px 1fr; gap: 22px; min-height: 220px; padding: 32px; overflow: hidden; border: 1px solid var(--v4-line); border-radius: 20px; background: var(--v4-panel); box-shadow: 0 12px 30px rgba(88,60,42,.06); }
.v4-overview-card__badge { display: grid; place-items: center; align-self: start; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.32); border-radius: 16px; color: #fff; font-size: 36px; font-weight: 950; }
.v4-overview-card--v4 .v4-overview-card__badge { background: #ff6d24; }
.v4-overview-card--blessing .v4-overview-card__badge { background: #43b5d4; }
.v4-overview-card h3 { margin: 2px 0 12px; font-size: 20px; }
.v4-overview-card p { margin: 0; color: var(--v4-muted); font-size: 14px; line-height: 1.8; }
.v4-overview-card a { display: inline-block; margin-top: 18px; color: var(--v4-orange-dark); font-size: 13px; font-weight: 800; }
.v4-overview-card a span { transition: margin .18s; }
.v4-overview-card a:hover span { margin-left: 5px; }
.v4-note { margin-top: 16px; padding: 15px 18px; border-left: 4px solid var(--v4-orange); border-radius: 8px; background: #fff3df; color: #765337; font-size: 13px; line-height: 1.75; }

.v4-blessing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.v4-blessing-card { --tone: #eaa229; position: relative; padding: 26px; border: 1px solid color-mix(in srgb, var(--tone) 22%, transparent); border-radius: 20px; background: linear-gradient(145deg, color-mix(in srgb, var(--tone) 6%, white), var(--v4-panel) 50%); box-shadow: 0 12px 30px rgba(88,60,42,.06); }
.v4-blessing-card[data-tone="cyan"] { --tone: #21b7d3; }
.v4-blessing-card[data-tone="crimson"] { --tone: #d9536d; }
.v4-blessing-card[data-tone="sky"] { --tone: #4e9ddd; }
.v4-blessing-card header { display: grid; grid-template-columns: 82px 1fr; gap: 18px; align-items: start; }
.v4-blessing-card header small { color: var(--tone); font-size: 11px; font-weight: 850; letter-spacing: .08em; }
.v4-blessing-card header h3 { display: inline; margin: 0; font-size: 20px; line-height: 1.35; }
.v4-blessing-card header p { margin: 8px 0 0; color: var(--v4-muted); font-size: 13px; line-height: 1.7; }
.v4-skill-icon { display: block; width: 64px; height: 64px; flex: none; padding: 5px; border: 1px solid rgba(60,43,34,.13); border-radius: 13px; background: #fff; box-shadow: 0 7px 18px rgba(60,43,34,.12); }
.v4-skill-icon img { width: 100%; height: 100%; object-fit: contain; }
.v4-skill-icon--large { width: 82px; height: 82px; border-radius: 17px; }
.v4-stat-row { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; margin-top: 20px; }
.v4-stat-row span { min-width: 0; padding: 10px 11px; border-radius: 10px; background: rgba(255,255,255,.66); border: 1px solid var(--v4-line); }
.v4-stat-row small, .v4-stat-row b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.v4-stat-row small { color: var(--v4-muted); font-size: 10px; }
.v4-stat-row b { margin-top: 3px; font-size: 12px; }
.v4-job-cloud { margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--v4-line); }
.v4-job-cloud > b { font-size: 12px; }
.v4-job-cloud > div { display: flex; flex-wrap: wrap; gap: 6px; max-height: 124px; margin-top: 10px; overflow: auto; }
.v4-job-cloud span { display: inline-flex; align-items: center; gap: 5px; padding: 4px 8px 4px 5px; border: 1px solid var(--v4-line); border-radius: 7px; background: rgba(255,255,255,.72); color: #655b61; font-size: 10px; }
.v4-job-cloud img { width: 21px; height: 21px; border-radius: 5px; object-fit: cover; }
.v4-modal-link { appearance: none; border: 0; background: transparent; font: inherit; cursor: pointer; }
.v4-card-link { display: flex; justify-content: space-between; width: 100%; margin-top: 18px; padding: 14px 0 0; border-top: 1px solid var(--v4-line); color: var(--tone) !important; font-size: 13px; font-weight: 800; text-align: left; }

.v4-filter-panel { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 20px; padding: 14px; border: 1px solid var(--v4-line); border-radius: 15px; background: var(--v4-panel); box-shadow: 0 9px 22px rgba(88,60,42,.045); }
.v4-search { position: relative; display: flex; align-items: center; width: min(360px,100%); }
.v4-search i { position: absolute; left: 14px; width: 13px; height: 13px; border: 2px solid #aa9fa4; border-radius: 50%; }
.v4-search i::after { content: ""; position: absolute; width: 6px; height: 2px; right: -5px; bottom: -3px; transform: rotate(45deg); background: #aa9fa4; }
.v4-search input { width: 100%; height: 42px; padding: 0 38px; border: 1px solid var(--v4-line); border-radius: 10px; outline: 0; background: #faf8f7; color: inherit; font: inherit; font-size: 13px; }
.v4-search input:focus { border-color: rgba(255,122,33,.55); box-shadow: 0 0 0 3px rgba(255,122,33,.1); }
.v4-search button { position: absolute; right: 7px; width: 28px; height: 28px; border: 0; border-radius: 7px; background: transparent; color: #94888e; font-size: 20px; cursor: pointer; }
.v4-search button:hover { background: #eee9e7; }
.v4-class-tabs { display: flex; gap: 5px; }
.v4-class-tabs button { height: 38px; padding: 0 15px; border: 0; border-radius: 9px; background: transparent; color: var(--v4-muted); font-size: 12px; font-weight: 750; cursor: pointer; }
.v4-class-tabs button:hover { background: #fff4e8; color: var(--v4-orange-dark); }
.v4-class-tabs button.is-active { background: var(--v4-orange); color: #fff; box-shadow: 0 6px 14px rgba(225,94,20,.2); }
.v4-skill-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.v4-skill-card { --tone: #7f8792; position: relative; isolation: isolate; display: flex; flex-direction: column; min-width: 0; padding: 17px; overflow: hidden; border: 1px solid var(--v4-line); border-radius: 17px; background: linear-gradient(180deg,color-mix(in srgb,var(--tone) 2.5%,var(--v4-panel)),var(--v4-panel) 54%); box-shadow: 0 8px 22px rgba(77,55,42,.045); transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.v4-skill-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb,var(--tone) 35%,transparent); box-shadow: 0 15px 30px rgba(77,55,42,.09); }
.v4-skill-card[data-tone="red"] { --tone: #df665d; }
.v4-skill-card[data-tone="violet"] { --tone: #9a72d5; }
.v4-skill-card[data-tone="green"] { --tone: #5da66c; }
.v4-skill-card[data-tone="indigo"] { --tone: #6674c9; }
.v4-skill-card[data-tone="blue"] { --tone: #4b98cf; }
.v4-skill-card > header { position: relative; display: grid; grid-template-columns: 36px minmax(0,1fr) auto; gap: 9px; align-items: center; min-height: 62px; margin: -17px -17px 0; padding: 13px 17px 12px; overflow: hidden; }
.v4-skill-card > header::after { content: ""; position: absolute; inset: 0; z-index: 0; background: radial-gradient(circle at 82% 18%,color-mix(in srgb,var(--tone) 15%,transparent),transparent 44%); pointer-events: none; }
.v4-job-avatar { position: relative; z-index: 2; display: grid; place-items: center; width: 36px; height: 36px; overflow: hidden; border: 1px solid color-mix(in srgb,var(--tone) 20%,transparent); border-radius: 9px; background: color-mix(in srgb,var(--tone) 12%,white); box-shadow: 0 4px 11px color-mix(in srgb,var(--tone) 14%,transparent); }
.v4-job-avatar img { width: 100%; height: 100%; object-fit: cover; }
.v4-job-avatar b { color: var(--tone); }
.v4-job-art { position: absolute; right: 35px; bottom: -20px; z-index: 1; width: 124px; height: 105px; object-fit: contain; object-position: var(--job-art-position,center bottom); opacity: .3; filter: saturate(.92) contrast(1.02); -webkit-mask-image: linear-gradient(90deg,transparent 0,#000 30%); mask-image: linear-gradient(90deg,transparent 0,#000 30%); pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
.v4-skill-card:hover .v4-job-art { opacity: .4; transform: scale(1.035) translateY(-1px); }
.v4-skill-card > header > div { position: relative; z-index: 2; min-width: 0; }
.v4-skill-card > header small { display: block; color: var(--tone); font-size: 9px; font-weight: 800; }
.v4-skill-card > header h3 { margin: 1px 0 0; overflow: hidden; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.v4-skill-card > header em { position: relative; z-index: 2; padding: 5px 8px; border: 1px solid color-mix(in srgb,var(--tone) 10%,transparent); border-radius: 7px; background: color-mix(in srgb,var(--tone) 12%,white); color: var(--tone); font-size: 11px; font-style: normal; font-weight: 900; box-shadow: 0 3px 9px color-mix(in srgb,var(--tone) 9%,transparent); }
.v4-skill-card__body { display: grid; grid-template-columns: 64px minmax(0,1fr); gap: 13px; margin-top: 15px; }
.v4-skill-card__copy { min-width: 0; }
.v4-skill-card__copy h4 { display: inline; margin: 0; font-size: 15px; line-height: 1.4; }
.v4-skill-card__copy a:hover h4 { color: var(--v4-orange-dark); }
.v4-skill-card__copy p { display: -webkit-box; margin: 7px 0 0; overflow: hidden; color: var(--v4-muted); font-size: 11px; line-height: 1.65; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.v4-stat-row--compact { margin-top: 14px; }
.v4-stat-row--compact span { padding: 8px; background: color-mix(in srgb,var(--tone) 3%,#faf8f7); }
.v4-skill-card footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 14px; color: var(--v4-muted); font-size: 10px; }
.v4-skill-card footer .v4-modal-link { display: inline-flex; align-items: center; gap: 5px; margin: -5px -7px -5px 0; padding: 6px 7px; border-radius: 7px; color: var(--tone); font-size: 13px; font-weight: 850; line-height: 1.2; }
.v4-skill-card footer .v4-modal-link:hover { background: color-mix(in srgb,var(--tone) 10%,transparent); }
.v4-empty { padding: 58px 20px; text-align: center; border: 1px dashed var(--v4-line); border-radius: 16px; background: var(--v4-panel); }
.v4-empty b { font-size: 18px; }
.v4-empty p { margin: 8px 0 0; color: var(--v4-muted); font-size: 13px; }

.v4-tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.v4-tool-grid > a { --tone: #ee7a27; display: grid; grid-template-columns: 66px 1fr; gap: 18px; align-items: start; padding: 25px; border: 1px solid color-mix(in srgb,var(--tone) 20%,transparent); border-radius: 17px; background: linear-gradient(135deg,color-mix(in srgb,var(--tone) 7%,white),var(--v4-panel)); transition: transform .18s ease, box-shadow .18s ease; }
.v4-tool-grid > a:hover { transform: translateY(-3px); box-shadow: 0 13px 26px rgba(77,55,42,.08); }
.v4-tool-grid > a[data-tone="violet"] { --tone: #9570d0; }
.v4-tool-grid > a[data-tone="blue"] { --tone: #438fc8; }
.v4-tool-grid > a[data-tone="green"] { --tone: #50a06a; }
.v4-tool-grid > a > span { display: grid; place-items: center; width: 66px; aspect-ratio: 1; border-radius: 17px; background: var(--tone); color: #fff; font-size: 14px; font-weight: 900; box-shadow: inset 0 0 0 4px rgba(255,255,255,.2); }
.v4-tool-grid h3 { margin: 1px 0 7px; font-size: 17px; }
.v4-tool-grid p { margin: 0; color: var(--v4-muted); font-size: 12px; line-height: 1.7; }
.v4-tool-grid b { display: inline-block; margin-top: 11px; color: var(--tone); font-size: 11px; }
.v4-growth { display: grid; grid-template-columns: .7fr 1.3fr; gap: 0 42px; margin-top: 76px; padding: 34px; border-radius: 22px; background: #29242a; color: #fff; }
.v4-growth__head { grid-row: 1 / span 2; }
.v4-growth__head p { margin: 0; color: #ff9a56; font-size: 11px; font-weight: 850; letter-spacing: .14em; }
.v4-growth h2 { margin: 7px 0 0; font-size: 28px; }
.v4-growth article { padding: 15px 0 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
.v4-growth article:first-of-type { padding-top: 5px; }
.v4-growth h3 { margin: 0; font-size: 14px; }
.v4-growth article p { margin: 10px 0 0; color: rgba(255,255,255,.72); font-size: 13px; line-height: 1.85; }
.v4-growth strong { color: #ff9a56; font-weight: 850; }
.v4-source-note { margin-top: 25px; color: var(--v4-muted); font-size: 11px; text-align: center; }

.v4-index-hero { padding: 80px 0 96px; background: linear-gradient(125deg,#fa6722,#ff9b32); color: #fff; }
.v4-index-hero span { font-size: 11px; font-weight: 850; letter-spacing: .2em; }
.v4-index-hero h1 { margin: 9px 0 8px; font-size: 46px; }
.v4-index-hero p { margin: 0; color: rgba(255,255,255,.83); }
.v4-index-grid { padding-block: 45px 80px; }
.v4-index-card { display: grid; grid-template-columns: minmax(280px,.85fr) 1.15fr; min-height: 280px; overflow: hidden; border: 1px solid var(--v4-line); border-radius: 22px; background: var(--v4-panel); box-shadow: 0 16px 35px rgba(86,56,38,.08); }
.v4-index-card__visual { display: grid; place-content: center; text-align: center; background: linear-gradient(145deg,#ff8629,#ec5018); color: #fff; }
.v4-index-card__visual b { font-size: 78px; line-height: 1; }
.v4-index-card__visual span { margin-top: 12px; font-size: 12px; }
.v4-index-card > div:last-child { display: flex; flex-direction: column; justify-content: center; padding: 42px; }
.v4-index-card small { color: var(--v4-orange); font-weight: 800; }
.v4-index-card h2 { margin: 8px 0 12px; font-size: 29px; }
.v4-index-card p { margin: 0; color: var(--v4-muted); line-height: 1.8; }
.v4-index-card strong { margin-top: 22px; color: var(--v4-orange-dark); }

[data-theme="dark"] .v4-topic {
    --v4-ink: #f4eff2;
    --v4-muted: #aaa0a7;
    --v4-line: rgba(255,255,255,.1);
    --v4-panel: rgba(34,31,35,.94);
    --v4-soft: #211e21;
    background: radial-gradient(circle at 8% 18%, rgba(255,130,47,.08), transparent 25rem), #181619;
}
[data-theme="dark"] .v4-jump { background: rgba(35,31,35,.92); }
[data-theme="dark"] .v4-jump a:hover, [data-theme="dark"] .v4-class-tabs button:hover { background: rgba(255,122,33,.12); }
[data-theme="dark"] .v4-section__head > span { background: rgba(255,122,33,.14); }
[data-theme="dark"] .v4-note { background: rgba(255,141,47,.1); color: #deb692; }
[data-theme="dark"] .v4-blessing-card { background: linear-gradient(145deg,color-mix(in srgb,var(--tone) 9%,#221f22),var(--v4-panel) 50%); }
[data-theme="dark"] .v4-stat-row span, [data-theme="dark"] .v4-job-cloud span { background: rgba(255,255,255,.035); }
[data-theme="dark"] .v4-skill-icon { background: #302d30; }
[data-theme="dark"] .v4-search input, [data-theme="dark"] .v4-stat-row--compact span { background: #252225; }
[data-theme="dark"] .v4-search button:hover { background: #3b363b; }
[data-theme="dark"] .v4-job-avatar, [data-theme="dark"] .v4-skill-card > header em { background: color-mix(in srgb,var(--tone) 14%,#292529); }
[data-theme="dark"] .v4-tool-grid > a { background: linear-gradient(135deg,color-mix(in srgb,var(--tone) 8%,#211e21),var(--v4-panel)); }

@media (max-width: 980px) {
    .v4-hero h1 { font-size: 52px; }
    .v4-hero__inner { grid-template-columns: 1fr 320px; gap: 30px; }
    .v4-hero__visual { width: 310px; }
    .v4-orbit-icon { width: 50px; }
    .v4-orbit-icon img { width: 38px; }
    .v4-matrix-core { width: 108px; font-size: 44px; }
    .v4-skill-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .v4-filter-panel { align-items: stretch; flex-direction: column; }
    .v4-search { width: 100%; }
    .v4-class-tabs { overflow-x: auto; }
}

@media (max-width: 720px) {
    .v4-topic .layout-shell { width: min(100% - 24px,1180px); }
    .v4-hero { min-height: auto; }
    .v4-hero__inner { display: block; min-height: auto; padding-block: 55px 78px; }
    .v4-hero__copy { text-align: center; }
    .v4-kicker, .v4-hero__actions { justify-content: center; margin-inline: auto; }
    .v4-hero h1 { font-size: 49px; white-space: normal; }
    .v4-hero__copy > p { font-size: 15px; line-height: 1.75; }
    .v4-hero__metrics { justify-content: center; gap: 20px; }
    .v4-hero__metrics span { display: block; text-align: center; }
    .v4-hero__metrics small { display: block; margin-top: 3px; }
    .v4-hero__visual { display: none; }
    .v4-jump { justify-content: flex-start; margin-bottom: 42px; }
    .v4-section { margin-top: 58px; }
    .v4-section__head { align-items: flex-start; }
    .v4-section__head > span { width: 40px; }
    .v4-section__head > small { display: none; }
    .v4-overview-grid, .v4-blessing-grid, .v4-tool-grid, .v4-growth { grid-template-columns: 1fr; }
    .v4-overview-card { grid-template-columns: 62px 1fr; min-height: 0; padding: 21px; }
    .v4-overview-card__badge { border-radius: 13px; font-size: 25px; }
    .v4-blessing-card { padding: 20px; }
    .v4-blessing-card header { grid-template-columns: 66px 1fr; gap: 13px; }
    .v4-skill-icon--large { width: 66px; height: 66px; }
    .v4-stat-row { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .v4-filter-panel { padding: 10px; }
    .v4-class-tabs button { padding-inline: 13px; }
    .v4-skill-grid { grid-template-columns: 1fr; }
    .v4-tool-grid > a { grid-template-columns: 54px 1fr; padding: 20px; }
    .v4-tool-grid > a > span { width: 54px; border-radius: 14px; }
    .v4-growth { gap: 0; margin-top: 58px; padding: 25px; }
    .v4-growth__head { grid-row: auto; margin-bottom: 16px; }
    .v4-index-hero { padding: 62px 0 76px; }
    .v4-index-card { grid-template-columns: 1fr; }
    .v4-index-card__visual { min-height: 210px; }
    .v4-index-card > div:last-child { padding: 28px; }
}

@media (prefers-reduced-motion: reduce) {
    .v4-topic * { scroll-behavior: auto !important; transition: none !important; }
}