body.stopwatch {
    color-scheme: light;
    --bg-0: #f7f9fc;
    --bg-1: #eef2f7;
    --ink: #0f172a;
    --muted: rgba(71, 84, 103, 0.82);
    --accent: #2563eb;
    --accent-2: #10b981;
    --accent-3: #f59e0b;
    --surface: rgba(255, 255, 255, 0.92);
    --surface-strong: #ffffff;
    --stroke: rgba(15, 23, 42, 0.12);
    --shadow: 0 30px 70px rgba(15, 23, 42, 0.12);
    min-height: 100vh;
    background:
        radial-gradient(1000px 520px at 8% -12%, rgba(37, 99, 235, 0.12), transparent 60%),
        radial-gradient(900px 520px at 92% 12%, rgba(16, 185, 129, 0.12), transparent 60%),
        linear-gradient(180deg, var(--bg-0), var(--bg-1));
    color: var(--ink);
    position: relative;
    overflow-x: hidden;
}

body.stopwatch,
body.stopwatch * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.stopwatch::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
    background-size: 72px 72px;
    opacity: 0.55;
    pointer-events: none;
    z-index: 0;
}

body.stopwatch::after {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 16% 18%, rgba(255, 255, 255, 0.8), transparent 45%),
        radial-gradient(circle at 82% 72%, rgba(255, 255, 255, 0.6), transparent 50%);
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
}

.stopwatch a {
    color: inherit;
    text-decoration: none;
}

.stopwatch .page {
    max-width: 1240px;
    margin: 0 auto;
    padding: 48px 24px 110px;
    position: relative;
    z-index: 1;
}

.stopwatch h1 {
    color: var(--ink);
    animation: none;
    text-shadow: none;
}

.stopwatch .hero {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.stopwatch .hero-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--stroke);
}

.stopwatch .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--stroke);
    color: var(--muted);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.08);
    transition: border 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.stopwatch .back-link:hover {
    color: var(--ink);
    border-color: rgba(37, 99, 235, 0.5);
    transform: translateY(-1px);
}

.stopwatch .hero-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.stopwatch .badge {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--stroke);
    background: rgba(255, 255, 255, 0.9);
    color: var(--muted);
}

.stopwatch .badge-outline {
    background: transparent;
    border-style: dashed;
}

.stopwatch .badge-ink {
    color: #17306b;
    border-color: rgba(37, 99, 235, 0.35);
    background: rgba(37, 99, 235, 0.14);
}

.stopwatch .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 32px;
    align-items: start;
}

.stopwatch .hero-main h1 {
    font-size: clamp(2.5rem, 4.2vw, 3.7rem);
    line-height: 1.15;
    margin-bottom: 16px;
}

.stopwatch .hero-main p {
    color: var(--muted);
    line-height: 1.75;
    margin-bottom: 14px;
}

.stopwatch .hero-eyebrow {
    font-size: 12px;
    letter-spacing: 0.36em;
    text-transform: uppercase;
    color: rgba(37, 99, 235, 0.6);
    margin-bottom: 12px;
}

.stopwatch .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
}

.stopwatch .hero-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), #4f83ff);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 18px 34px rgba(37, 99, 235, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stopwatch .hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 40px rgba(37, 99, 235, 0.38);
}

.stopwatch .hero-cta-hint {
    font-size: 13px;
    color: var(--muted);
}

.stopwatch .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.stopwatch .tag {
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--stroke);
    font-size: 12px;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.85);
}

.stopwatch .hero-side {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.stopwatch #stopwatch {
    scroll-margin-top: 24px;
}

.stopwatch .stopwatch-stage {
    margin-top: 32px;
}

.stopwatch .stopwatch-lab {
    background: var(--surface);
    border: 1px solid var(--stroke);
    border-radius: 26px;
    padding: 24px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.stopwatch .stopwatch-lab::before {
    content: "";
    position: absolute;
    inset: -40% 60% auto -12%;
    height: 80%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.18), transparent 70%);
    opacity: 0.7;
    pointer-events: none;
}

.stopwatch .stopwatch-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 18px;
    align-items: start;
}

.stopwatch .stopwatch-shell:fullscreen,
.stopwatch .stopwatch-shell:-webkit-full-screen {
    background:
        radial-gradient(1200px 520px at 10% 6%, rgba(37, 99, 235, 0.16), transparent 60%),
        radial-gradient(1200px 520px at 88% 12%, rgba(16, 185, 129, 0.16), transparent 62%),
        linear-gradient(180deg, #f6f8fb, #eef2f7);
    padding: clamp(20px, 3vw, 48px);
    min-height: 100vh;
    min-width: 100vw;
    box-sizing: border-box;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    grid-template-rows: minmax(0, 1fr);
    gap: clamp(16px, 2vw, 28px);
    align-items: stretch;
}

.stopwatch .stopwatch-shell:fullscreen .dial-panel,
.stopwatch .stopwatch-shell:-webkit-full-screen .dial-panel {
    justify-content: center;
    gap: 20px;
}

.stopwatch .stopwatch-shell:fullscreen .dial,
.stopwatch .stopwatch-shell:-webkit-full-screen .dial {
    min-height: clamp(320px, 46vh, 560px);
    padding: clamp(26px, 3vw, 44px);
    border-radius: 26px;
}

.stopwatch .stopwatch-shell:fullscreen .time-main,
.stopwatch .stopwatch-shell:-webkit-full-screen .time-main {
    font-size: clamp(3.2rem, 7.2vw, 6.4rem);
}

.stopwatch .stopwatch-shell:fullscreen .time-sub,
.stopwatch .stopwatch-shell:-webkit-full-screen .time-sub {
    font-size: clamp(1.6rem, 3.6vw, 2.6rem);
}

.stopwatch .stopwatch-shell:fullscreen .time-hint,
.stopwatch .stopwatch-shell:-webkit-full-screen .time-hint {
    font-size: 14px;
}

.stopwatch .stopwatch-shell:fullscreen .control-row,
.stopwatch .stopwatch-shell:-webkit-full-screen .control-row {
    gap: 12px;
}

.stopwatch .stopwatch-shell:fullscreen .primary-btn,
.stopwatch .stopwatch-shell:fullscreen .ghost-btn,
.stopwatch .stopwatch-shell:-webkit-full-screen .primary-btn,
.stopwatch .stopwatch-shell:-webkit-full-screen .ghost-btn {
    padding: 12px 26px;
    font-size: 16px;
}

.stopwatch .stopwatch-shell:fullscreen .lap-panel,
.stopwatch .stopwatch-shell:-webkit-full-screen .lap-panel {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.stopwatch .stopwatch-shell:fullscreen .lap-list,
.stopwatch .stopwatch-shell:-webkit-full-screen .lap-list {
    flex: 1;
    max-height: none;
    min-height: 0;
}

.stopwatch .dial-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.stopwatch .dial {
    position: relative;
    padding: 28px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(15, 23, 42, 0.1);
    overflow: hidden;
    min-height: 260px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.9), 0 20px 40px rgba(15, 23, 42, 0.12);
}

.stopwatch .dial::before {
    content: "";
    position: absolute;
    inset: -40% auto auto -10%;
    width: 70%;
    height: 80%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.9), transparent 70%);
    opacity: 0.7;
    pointer-events: none;
}

.stopwatch .dial.is-running {
    box-shadow: inset 0 0 0 1px rgba(16, 185, 129, 0.4), 0 24px 50px rgba(15, 23, 42, 0.18);
}

.stopwatch .dial-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 2;
}

.stopwatch .status-pill {
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border: 1px solid var(--stroke);
    background: rgba(255, 255, 255, 0.88);
    color: var(--muted);
}

.stopwatch .status-pill.is-running {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.14);
    color: #075e4f;
}

.stopwatch .status-pill.is-paused {
    border-color: rgba(37, 99, 235, 0.5);
    background: rgba(37, 99, 235, 0.14);
    color: #17306b;
}

.stopwatch .lap-count {
    font-size: 14px;
    color: var(--muted);
}

.stopwatch .time-display {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 10px;
    margin-top: 32px;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    animation: none;
    position: relative;
    z-index: 2;
}

.stopwatch .time-main {
    font-size: clamp(2.8rem, 6vw, 4.8rem);
    letter-spacing: 0.08em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stopwatch .time-sub {
    font-size: clamp(1.4rem, 3vw, 2rem);
    color: var(--accent-2);
    margin-bottom: 6px;
    font-variant-numeric: tabular-nums;
}

.stopwatch .time-hint {
    margin-top: 12px;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
    position: relative;
    z-index: 2;
}

.stopwatch .dial-ring {
    position: absolute;
    inset: 16px;
    border-radius: 20px;
    background: conic-gradient(
        var(--accent-2) 0deg,
        var(--accent-2) var(--ring-progress),
        rgba(15, 23, 42, 0.06) var(--ring-progress),
        rgba(15, 23, 42, 0.06) 360deg
    );
    mask: radial-gradient(circle at center, transparent 60%, #000 62%);
    -webkit-mask: radial-gradient(circle at center, transparent 60%, #000 62%);
    opacity: 0.6;
    pointer-events: none;
}

.stopwatch .ring-hand {
    position: absolute;
    left: 50%;
    top: 18%;
    width: 2px;
    height: 36%;
    background: linear-gradient(to top, transparent, var(--accent));
    transform: translateX(-50%) rotate(var(--ring-angle, 0deg));
    transform-origin: bottom center;
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.35);
    z-index: 2;
}

.stopwatch .ring-hand::after {
    content: "";
    position: absolute;
    top: -6px;
    left: 50%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    transform: translateX(-50%);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
}

.stopwatch .control-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.stopwatch .primary-btn,
.stopwatch .ghost-btn,
.stopwatch .text-btn {
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 15px;
    padding: 10px 20px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease, background 0.2s ease;
}

.stopwatch .primary-btn {
    background: linear-gradient(135deg, var(--accent), #4f83ff);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 12px 26px rgba(37, 99, 235, 0.28);
}

.stopwatch .primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 32px rgba(37, 99, 235, 0.34);
}

.stopwatch .ghost-btn {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--stroke);
    color: var(--ink);
}

.stopwatch .ghost-btn:hover {
    border-color: rgba(16, 185, 129, 0.4);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.stopwatch .ghost-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
    box-shadow: none;
}

.stopwatch .text-btn {
    background: transparent;
    border-color: transparent;
    color: var(--muted);
    padding: 6px 8px;
}

.stopwatch .text-btn:hover {
    color: var(--ink);
}

.stopwatch .shortcut-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--muted);
}

.stopwatch .shortcut-row span {
    padding: 6px 10px;
    border-radius: 10px;
    border: 1px solid var(--stroke);
    background: rgba(255, 255, 255, 0.9);
}

.stopwatch .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.stopwatch .stat-card {
    background: var(--surface-strong);
    border: 1px solid var(--stroke);
    border-radius: 14px;
    padding: 12px 14px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
    text-align: left;
}

.stopwatch .stat-label {
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.stopwatch .stat-value {
    display: block;
    margin-top: 6px;
    font-size: 20px;
    letter-spacing: 0.06em;
    font-variant-numeric: tabular-nums;
}

.stopwatch .lap-panel {
    background: var(--surface-strong);
    border: 1px solid var(--stroke);
    border-radius: 22px;
    padding: 20px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
    min-height: 320px;
}

.stopwatch .panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.stopwatch .panel-kicker {
    font-size: 11px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--muted);
}

.stopwatch .lap-panel h2 {
    margin-top: 6px;
    font-size: 22px;
}

.stopwatch .lap-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--muted);
    letter-spacing: 0.16em;
    margin: 18px 0 12px;
}

.stopwatch .lap-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 320px;
    overflow: auto;
    padding-right: 4px;
}

.stopwatch .lap-list::-webkit-scrollbar {
    width: 6px;
}

.stopwatch .lap-list::-webkit-scrollbar-thumb {
    background: rgba(15, 23, 42, 0.2);
    border-radius: 999px;
}

.stopwatch .lap-item,
.stopwatch .lap-empty {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
    align-items: center;
    border-radius: 14px;
    padding: 10px 12px;
    background: rgba(15, 23, 42, 0.04);
    border: 1px solid transparent;
}

.stopwatch .lap-empty {
    grid-template-columns: 1fr;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    padding: 20px 12px;
}

.stopwatch .lap-item.is-best {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: inset 0 0 0 1px rgba(16, 185, 129, 0.2);
    background: rgba(16, 185, 129, 0.08);
}

.stopwatch .lap-item.is-latest {
    background: rgba(37, 99, 235, 0.1);
}

.stopwatch .lap-no,
.stopwatch .lap-time,
.stopwatch .lap-total {
    letter-spacing: 0.05em;
    font-variant-numeric: tabular-nums;
}

.stopwatch .lap-no {
    color: var(--accent-3);
}

.stopwatch .hero-card {
    background: var(--surface-strong);
    border: 1px solid var(--stroke);
    border-radius: 18px;
    padding: 18px;
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.12);
    position: relative;
    overflow: hidden;
}

.stopwatch .hero-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(37, 99, 235, 0.1), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.stopwatch .hero-card > * {
    position: relative;
    z-index: 1;
}

.stopwatch .hero-card:hover::after {
    opacity: 1;
}

.stopwatch .hero-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.stopwatch .hero-note {
    color: var(--muted);
    line-height: 1.7;
    font-size: 14px;
}

.stopwatch .hero-card ul {
    padding-left: 18px;
}

.stopwatch .hero-card li {
    margin-bottom: 10px;
    color: var(--muted);
}

.stopwatch .hero-card .stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
}

.stopwatch .hero-card .stat {
    background: rgba(15, 23, 42, 0.04);
    border-radius: 12px;
    padding: 10px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.stopwatch .hero-card .stat-label {
    display: block;
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

.stopwatch .hero-card .stat-value {
    display: block;
    margin-top: 6px;
    font-size: 16px;
    font-weight: 600;
}

.stopwatch .content-section {
    margin-top: 36px;
    display: grid;
    grid-template-columns: minmax(0, 0.35fr) minmax(0, 0.65fr);
    gap: 24px;
    align-items: start;
    padding: 28px;
    border-radius: 24px;
    border: 1px solid var(--stroke);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 22px 44px rgba(15, 23, 42, 0.1);
}

.stopwatch .content-section:nth-of-type(even) {
    background: rgba(255, 255, 255, 0.92);
}

.stopwatch .section-head {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stopwatch .section-kicker {
    font-size: 12px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: rgba(37, 99, 235, 0.6);
}

.stopwatch .section-head h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.stopwatch .section-head p {
    color: var(--muted);
    line-height: 1.7;
}

.stopwatch .content-section .tips,
.stopwatch .content-section .faq {
    margin-top: 0;
}

.stopwatch .tips {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.stopwatch .tip-card {
    background: var(--surface-strong);
    border: 1px solid var(--stroke);
    border-radius: 18px;
    padding: 18px;
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stopwatch .tip-card h3 {
    margin-bottom: 10px;
    font-size: 18px;
}

.stopwatch .tip-card p {
    color: var(--muted);
    line-height: 1.7;
}

.stopwatch .tip-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.14);
}

.stopwatch .faq {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.stopwatch .faq-item {
    background: var(--surface-strong);
    border: 1px solid var(--stroke);
    border-radius: 18px;
    padding: 18px;
}

.stopwatch .faq-item h3 {
    margin-bottom: 8px;
    font-size: 17px;
}

.stopwatch .faq-item p {
    color: var(--muted);
    line-height: 1.7;
}

.stopwatch .cta-card {
    text-align: center;
    padding: 26px 24px;
    border-color: rgba(37, 99, 235, 0.18);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(239, 246, 255, 0.96));
    position: relative;
    overflow: hidden;
}

.stopwatch .cta-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(360px 140px at 50% 0%, rgba(37, 99, 235, 0.12), transparent 65%);
    pointer-events: none;
}

.stopwatch .content-section > .cta-card {
    grid-column: 1 / -1;
}

.stopwatch .cta-card h3,
.stopwatch .cta-card p,
.stopwatch .cta-card .hero-actions {
    position: relative;
    z-index: 1;
}

.stopwatch .cta-card p {
    max-width: 560px;
    margin: 0 auto;
}

.stopwatch .cta-card .hero-actions {
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}

.stopwatch .cta-card .hero-cta-hint {
    margin: 0 auto;
    text-align: center;
}

.stopwatch .reveal {
    opacity: 0;
    transform: translateY(20px);
    animation: reveal 0.7s ease forwards;
    animation-delay: var(--delay, 0s);
}

@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1040px) {
    .stopwatch .hero-grid {
        grid-template-columns: 1fr;
    }

    .stopwatch .stopwatch-shell {
        grid-template-columns: 1fr;
    }

    .stopwatch .control-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stopwatch .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .stopwatch .content-section {
        grid-template-columns: 1fr;
    }

    .stopwatch .tips,
    .stopwatch .faq {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .stopwatch .page {
        padding: 32px 18px 90px;
    }

    .stopwatch .stopwatch-lab {
        padding: 18px;
    }

    .stopwatch .dial {
        padding: 22px;
    }

    .stopwatch .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .stopwatch .cta-card .hero-actions {
        align-items: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .stopwatch .reveal {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .stopwatch .primary-btn,
    .stopwatch .ghost-btn,
    .stopwatch .hero-cta,
    .stopwatch .back-link,
    .stopwatch .tip-card {
        transition: none;
    }
}