:root {
    --primary-color: #007aff;
    --primary-dark: #0d3b8f;
    --secondary-color: #0f172a;
    --accent-color: #00a6a6;
    --bg-main: #f4f7fb;
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-primary: #142033;
    --text-secondary: #52607a;
    --text-light: #7d8aa5;
    --line-color: rgba(20, 32, 51, 0.08);
    --shadow-soft: 0 18px 50px rgba(13, 59, 143, 0.08);
    --shadow-hover: 0 24px 60px rgba(13, 59, 143, 0.12);
    --hero-gradient: linear-gradient(135deg, #f8fbff 0%, #e9f2ff 45%, #eefbf9 100%);
}

html {
    overflow-x: hidden;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background:
        radial-gradient(circle at top left, rgba(0, 122, 255, 0.08), transparent 28%),
        radial-gradient(circle at top right, rgba(0, 166, 166, 0.08), transparent 24%),
        var(--bg-main);
    color: var(--text-primary);
    line-height: 1.75;
    overflow-x: hidden;
}

a {
    color: inherit;
}

.container {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
}

.article-shell {
    width: min(1240px, calc(100vw - 32px));
    margin: 0 auto;
    padding: 28px 0 88px;
}

.hero-section {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
    gap: 22px;
    align-items: stretch;
    position: relative;
}

.hero-copy,
.hero-visual,
.content-card,
.side-card {
    background: var(--bg-card);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--shadow-soft);
}

.hero-copy {
    padding: 42px;
    border-radius: 32px;
    background:
        radial-gradient(circle at top right, rgba(0, 166, 166, 0.14), transparent 28%),
        linear-gradient(145deg, #ffffff 0%, #eef5ff 52%, #f4fcfb 100%);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin: 18px 0 18px;
    font-size: clamp(2rem, 4vw, 3.25rem);
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.hero-summary {
    margin: 0;
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 720px;
}

.hero-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 26px;
}

.hero-point {
    display: grid;
    gap: 6px;
    padding: 16px 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(20, 32, 51, 0.07);
}

.hero-point strong {
    font-size: 16px;
    line-height: 1.2;
}

.hero-point span {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--text-secondary);
    font-size: 14px;
}

.hero-visual {
    border-radius: 32px;
    padding: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(240, 247, 255, 0.95));
}

.hero-visual-frame {
    position: relative;
    overflow: hidden;
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 20px 50px rgba(13, 59, 143, 0.12);
}

.hero-visual-frame::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.06) 100%);
    pointer-events: none;
}

.hero-visual img {
    width: 100%;
    display: block;
    border-radius: 22px;
    object-fit: cover;
    min-height: 100%;
}

.hero-caption {
    display: grid;
    gap: 10px;
    padding: 16px 6px 4px;
}

.caption-tag {
    display: inline-flex;
    width: fit-content;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hero-caption p {
    margin: 0;
    color: var(--text-light);
    font-size: 14px;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    margin-top: 24px;
    align-items: start;
}

.article-main {
    display: grid;
    gap: 22px;
}

.content-card,
.side-card {
    border-radius: 26px;
    padding: 30px 32px;
}

.content-card h2,
.side-card h3 {
    margin: 0 0 16px;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.content-card h2 {
    font-size: 30px;
}

.content-card h3 {
    margin: 0 0 10px;
    font-size: 20px;
}

.content-card p,
.content-card li,
.side-card li {
    color: var(--text-secondary);
    font-size: 17px;
}

.content-card ul,
.side-card ul {
    margin: 0;
    padding-left: 20px;
}

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

.comparison-grid > div,
.usage-grid > div,
.workflow-list > div {
    padding: 18px 20px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(248, 251, 255, 0.95), rgba(241, 247, 255, 0.9));
    border: 1px solid var(--line-color);
}

.comparison-grid h3 i {
    margin-right: 8px;
    color: var(--primary-color);
}

.workflow-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.workflow-list strong {
    color: var(--text-primary);
}

.prompt-card pre {
    margin: 18px 0;
    padding: 20px;
    overflow-x: auto;
    border-radius: 20px;
    background: #0f172a;
    color: #dbeafe;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.prompt-card code {
    font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
    font-size: 14px;
    line-height: 1.75;
}

.conclusion-card {
    background: linear-gradient(135deg, rgba(233, 242, 255, 0.95), rgba(238, 251, 249, 0.95));
}

.article-side {
    position: sticky;
    top: 92px;
    display: grid;
    gap: 18px;
}

.side-card {
    padding: 24px;
}

.side-card li + li {
    margin-top: 10px;
}

.action-card {
    background: linear-gradient(180deg, rgba(20, 32, 51, 0.98), rgba(13, 59, 143, 0.96));
    color: #fff;
}

.action-card p {
    color: rgba(255, 255, 255, 0.78);
}

.side-link {
    display: inline-flex;
    margin-top: 8px;
    padding: 12px 18px;
    border-radius: 14px;
    background: #fff;
    color: var(--primary-dark);
    font-weight: 700;
    text-decoration: none;
}

.side-link:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

@media (max-width: 1080px) {
    .hero-section,
    .article-layout,
    .comparison-grid,
    .usage-grid {
        grid-template-columns: 1fr;
    }

    .hero-points {
        grid-template-columns: 1fr;
    }

    .article-side {
        position: static;
    }
}

@media (max-width: 720px) {
    .article-shell {
        width: min(100%, calc(100vw - 20px));
        padding: 24px 0 64px;
    }

    .hero-copy,
    .content-card,
    .side-card {
        padding: 22px;
        border-radius: 22px;
    }

    .hero-visual {
        padding: 12px;
        border-radius: 22px;
    }

    .content-card h2 {
        font-size: 24px;
    }

    .content-card p,
    .content-card li,
    .side-card li {
        font-size: 16px;
    }

    .hero-summary {
        font-size: 16px;
    }
}