:root {
    --piply-blue: #4f6df5;
    --piply-blue-dark: #314ecf;
    --piply-blue-soft: #dfe6ff;
    --piply-pink: #f06d9a;
    --piply-green: #67c47a;
    --piply-orange: #ffad2f;
    --piply-cyan: #64cfe3;
    --ink: #151724;
    --body: #3f4354;
    --muted: #6f7483;
    --surface: #ffffff;
    --surface-soft: #f6f8ff;
    --line: #e4e7f1;
    --shadow: 0 22px 70px rgba(45, 58, 110, 0.16);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--body);
    font-family: Arial, sans-serif;
    line-height: 1.65;
    background:
        linear-gradient(90deg, rgba(79, 109, 245, 0.08) 1px, transparent 1px),
        linear-gradient(180deg, rgba(79, 109, 245, 0.08) 1px, transparent 1px),
        linear-gradient(180deg, #ffffff 0%, #f7f8ff 48%, #eef2ff 100%);
    background-size: 44px 44px, 44px 44px, auto;
}

a {
    color: var(--piply-blue-dark);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    display: block;
    max-width: 100%;
}

.wrap {
    width: min(1080px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header,
.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 22px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-weight: 900;
}

.brand:hover {
    text-decoration: none;
}

.brand img {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    box-shadow: 0 10px 22px rgba(79, 109, 245, 0.18);
}

.nav,
.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.nav a,
.site-footer a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 8px 13px;
    color: var(--body);
    font-size: 0.94rem;
    font-weight: 700;
}

.nav a:hover,
.site-footer a:hover {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.78);
    text-decoration: none;
}

.hero,
.article-hero,
.card,
.note,
.toc,
.cta,
.compare-table,
details {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 12px 36px rgba(45, 58, 110, 0.09);
}

.hero,
.article-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.5fr);
    gap: 24px;
    align-items: center;
    margin: 24px 0 28px;
    padding: 32px;
    background:
        linear-gradient(135deg, rgba(79, 109, 245, 0.14), rgba(100, 207, 227, 0.12)),
        #ffffff;
}

.kicker {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    border: 1px solid rgba(79, 109, 245, 0.18);
    border-radius: 999px;
    padding: 6px 12px;
    color: var(--piply-blue-dark);
    background: rgba(223, 230, 255, 0.72);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    color: var(--ink);
    line-height: 1.08;
}

h1 {
    max-width: 780px;
    margin: 14px 0;
    font-size: clamp(2.65rem, 7vw, 5.6rem);
    font-weight: 900;
}

h2 {
    margin: 42px 0 10px;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
}

h3 {
    margin: 18px 0 8px;
    font-size: 1.18rem;
}

p {
    margin: 10px 0;
}

.sub {
    max-width: 760px;
    color: var(--body);
    font-size: 1.08rem;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    color: var(--muted);
    font-size: 0.95rem;
}

.hero-shot {
    width: min(100%, 270px);
    margin-left: auto;
    border: 8px solid #ffffff;
    border-radius: 30px;
    box-shadow: var(--shadow);
}

.btns {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.store-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 18px;
}

.store-row.compact {
    margin-top: 12px;
}

.store-badge {
    width: 172px;
    height: auto;
    border: 0;
    border-radius: 0;
    filter: drop-shadow(0 12px 22px rgba(38, 48, 92, 0.16));
    transition: transform 0.18s ease;
}

.store-badge:hover {
    transform: translateY(-3px);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 10px 16px;
    color: var(--ink);
    background: #ffffff;
    font-weight: 900;
}

.btn.primary {
    color: #ffffff;
    border-color: transparent;
    background: var(--piply-blue);
    box-shadow: 0 12px 24px rgba(79, 109, 245, 0.2);
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 18px;
}

.card,
.note,
.toc,
.cta {
    padding: 20px;
}

.card h3:first-child {
    margin-top: 0;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.tag {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(79, 109, 245, 0.18);
    border-radius: 999px;
    padding: 6px 10px;
    color: var(--piply-blue-dark);
    background: rgba(223, 230, 255, 0.72);
    font-size: 0.78rem;
    font-weight: 800;
}

.toc ul {
    margin: 8px 0 0;
    padding-left: 18px;
}

.compare-table {
    overflow: hidden;
    margin: 18px 0;
}

.compare-row {
    display: grid;
    grid-template-columns: 0.8fr 1fr 1fr;
    gap: 0;
}

.compare-row > div {
    border-top: 1px solid var(--line);
    padding: 14px;
}

.compare-row:first-child > div {
    border-top: 0;
    color: var(--ink);
    background: var(--surface-soft);
    font-weight: 900;
}

.article-body {
    max-width: 860px;
    margin: 0 auto;
}

.article-body ul,
.article-body ol {
    padding-left: 22px;
}

.article-body li {
    margin: 8px 0;
}

details {
    padding: 16px 18px;
}

details + details {
    margin-top: 10px;
}

summary {
    color: var(--ink);
    cursor: pointer;
    font-weight: 900;
}

.site-footer {
    border-top: 1px solid var(--line);
    margin-top: 48px;
    color: var(--muted);
}

.site-footer p {
    margin: 0;
}

@media (max-width: 800px) {
    .site-header,
    .site-footer,
    .hero,
    .article-hero {
        align-items: flex-start;
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .nav,
    .site-footer nav {
        justify-content: flex-start;
    }

    .hero-shot {
        margin: 0;
        width: min(100%, 240px);
    }

    .grid,
    .compare-row {
        grid-template-columns: 1fr;
    }

    .compare-row:first-child {
        display: none;
    }

    .compare-row > div {
        border-top: 1px solid var(--line);
    }
}

@media (max-width: 560px) {
    .wrap {
        width: min(100% - 24px, 1080px);
    }

    .hero,
    .article-hero,
    .card,
    .note,
    .toc,
    .cta {
        padding: 18px;
    }

    h1 {
        font-size: clamp(2.35rem, 14vw, 3.7rem);
    }
}