/* ============================================================
   Docs Section — 嵌入官网的文档中心首页
   样式从文档站 site/index.module.css 提取并加 docs- 前缀
   --iy-* 变量映射到官网 styles.css 已有的 --coral/--amber/--cream
   ============================================================ */

:root {
    --iy-coral: var(--coral);
    --iy-coral-light: var(--coral-light);
    --iy-amber: var(--amber);
    --iy-cream: var(--cream);
    --iy-pearl: var(--pearl);
    --iy-mist: var(--mist);
    --iy-ink: var(--ink);
    --iy-charcoal: var(--charcoal);
    --iy-graphite: var(--graphite);
    --iy-sapphire: #3B82F6;
    --iy-text-primary: var(--text-primary);
    --iy-text-secondary: var(--text-secondary);
    --iy-font-serif: 'Noto Serif SC', serif;
    --iy-font-sans: 'Plus Jakarta Sans', sans-serif;
    --iy-font-body: 'DM Sans', sans-serif;
    --iy-ease: var(--ease-out-expo);
    --iy-radius-card: 24px;
    --iy-radius-btn: 14px;
    --iy-radius-icon: 18px;
    --iy-shadow-soft: var(--shadow-soft);
    --iy-shadow-medium: var(--shadow-medium);
    --iy-shadow-glow-coral: var(--shadow-glow-coral);
}

/* ============================================================
   Hero
   ============================================================ */
.docs-hero {
    position: relative;
    padding: 7rem 0 2.5rem;
    overflow: hidden;
    text-align: center;
    width: 100%;
    background: var(--iy-cream);
}

.docs-hero-bg {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 107, 74, 0.08) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black 35%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black 35%, transparent 70%);
    z-index: 0;
}

.docs-hero-ambient {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.docs-hero-ambient::before,
.docs-hero-ambient::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.6;
    animation: docs-hero-float 22s var(--iy-ease) infinite;
}

.docs-hero-ambient::before {
    width: 600px;
    height: 600px;
    top: -120px;
    left: -120px;
    background: radial-gradient(circle, rgba(255, 107, 74, 0.55), rgba(255, 107, 74, 0) 70%);
}

.docs-hero-ambient::after {
    width: 500px;
    height: 500px;
    bottom: -160px;
    right: -120px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.45), rgba(245, 158, 11, 0) 70%);
    animation-delay: -11s;
}

@keyframes docs-hero-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

.docs-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.docs-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.1rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border: 1px solid var(--iy-mist);
    border-radius: 100px;
    font-family: var(--iy-font-sans);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--iy-coral);
    margin-bottom: 1.75rem;
    box-shadow: var(--iy-shadow-soft);
}

.docs-hero-badge img {
    width: 16px;
    height: 16px;
}

.docs-hero-title {
    font-family: var(--iy-font-serif);
    font-size: 3.4rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: var(--iy-text-primary);
}

.docs-hero-accent {
    background: linear-gradient(135deg, var(--iy-coral) 0%, var(--iy-amber) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.docs-hero-desc {
    font-family: var(--iy-font-body);
    font-size: 1.1rem;
    color: var(--iy-text-secondary);
    line-height: 1.85;
    margin-bottom: 1rem;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

.docs-hero-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
    color: var(--iy-coral);
    opacity: 0.85;
    animation: docs-hero-arrow-bounce 2.2s var(--iy-ease) infinite;
}

@keyframes docs-hero-arrow-bounce {
    0%, 100% { transform: translateY(0); opacity: 0.7; }
    50% { transform: translateY(8px); opacity: 1; }
}

/* ============================================================
   Buttons
   ============================================================ */
.docs-btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--iy-coral) 0%, var(--iy-coral-light) 100%);
    color: #fff !important;
    border-radius: var(--iy-radius-btn);
    font-family: var(--iy-font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: transform 0.25s var(--iy-ease), box-shadow 0.25s var(--iy-ease);
    border: none;
    cursor: pointer;
    box-shadow: var(--iy-shadow-glow-coral);
}

.docs-btn-primary:hover {
    color: #fff !important;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(255, 107, 74, 0.35);
}

.docs-btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    border: 1px solid var(--iy-mist);
    border-radius: var(--iy-radius-btn);
    font-family: var(--iy-font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    color: var(--iy-text-primary);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    transition: all 0.25s var(--iy-ease);
    cursor: pointer;
}

.docs-btn-secondary:hover {
    background: #fff;
    border-color: var(--iy-coral);
    color: var(--iy-coral);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--iy-shadow-soft);
}

.docs-btn-tech {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--iy-sapphire) 0%, #6366f1 100%);
    color: #fff !important;
    border-radius: var(--iy-radius-btn);
    font-family: var(--iy-font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: transform 0.25s var(--iy-ease), box-shadow 0.25s var(--iy-ease);
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.22);
}

.docs-btn-tech:hover {
    color: #fff !important;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(59, 130, 246, 0.35);
}

/* ============================================================
   Section base
   ============================================================ */
.docs-section {
    width: 100%;
    padding: 5.5rem 0;
    background: var(--iy-cream);
}

.docs-section-alt {
    width: 100%;
    padding: 5.5rem 0;
    background: var(--iy-pearl);
    border-top: 1px solid var(--iy-mist);
    border-bottom: 1px solid var(--iy-mist);
}

.docs-section-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.docs-section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.docs-section-label {
    display: block;
    font-family: var(--iy-font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--iy-coral);
    margin-bottom: 1rem;
}

.docs-section-title {
    font-family: var(--iy-font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    color: var(--iy-text-primary);
    line-height: 1.25;
}

.docs-section-desc {
    font-family: var(--iy-font-body);
    font-size: 1.05rem;
    color: var(--iy-text-secondary);
    line-height: 1.75;
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

/* ============================================================
   Capability Grid
   ============================================================ */
.docs-cap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

@media (max-width: 768px) {
    .docs-cap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .docs-cap-grid {
        grid-template-columns: 1fr;
    }
}

.docs-cap-card {
    padding: 2rem;
    border-radius: var(--iy-radius-card);
    border: 1px solid var(--iy-mist);
    background: #fff;
    transition: transform 0.3s var(--iy-ease), box-shadow 0.3s var(--iy-ease), border-color 0.3s var(--iy-ease);
    box-shadow: var(--iy-shadow-soft);
}

.docs-cap-card:hover {
    border-color: rgba(255, 107, 74, 0.4);
    box-shadow: var(--iy-shadow-medium);
    transform: translateY(-4px);
}

.docs-cap-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--iy-radius-icon);
    background: linear-gradient(135deg, rgba(255, 107, 74, 0.12), rgba(245, 158, 11, 0.1));
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.docs-cap-title {
    font-family: var(--iy-font-sans);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--iy-text-primary);
    letter-spacing: -0.01em;
}

.docs-cap-desc {
    font-family: var(--iy-font-body);
    font-size: 0.88rem;
    color: var(--iy-text-secondary);
    line-height: 1.65;
    margin: 0;
}

/* ============================================================
   Audience Bridge — two-path card section
   ============================================================ */
.docs-audience-section {
    position: relative;
    padding-top: 3rem;
    padding-bottom: 3rem;
}

.docs-audience-section::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--iy-coral), var(--iy-amber), transparent);
    border-radius: 2px;
    z-index: 1;
}

.docs-audience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .docs-audience-grid {
        grid-template-columns: 1fr;
    }
}

.docs-audience-card {
    position: relative;
    padding: 2.5rem;
    border-radius: var(--iy-radius-card);
    border: 1px solid var(--iy-mist);
    background: #fff;
    transition: transform 0.3s var(--iy-ease), box-shadow 0.3s var(--iy-ease), border-color 0.3s var(--iy-ease);
    box-shadow: var(--iy-shadow-soft);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.docs-audience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--iy-coral) 0%, var(--iy-amber) 100%);
    opacity: 0.9;
}

.docs-audience-card-dev::before {
    background: linear-gradient(90deg, var(--iy-sapphire) 0%, #6366f1 100%);
}

.docs-audience-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--iy-radius-card);
    background: radial-gradient(circle at top right, rgba(255, 107, 74, 0.07), transparent 60%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s var(--iy-ease);
}

.docs-audience-card-dev::after {
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.07), transparent 60%);
}

.docs-audience-card:hover {
    border-color: rgba(255, 107, 74, 0.4);
    box-shadow: var(--iy-shadow-medium);
    transform: translateY(-4px);
}

.docs-audience-card-dev:hover {
    border-color: rgba(59, 130, 246, 0.4);
}

.docs-audience-card:hover::after {
    opacity: 1;
}

.docs-audience-pill {
    display: inline-block;
    align-self: flex-start;
    padding: 0.3rem 0.9rem;
    border-radius: 100px;
    font-family: var(--iy-font-sans);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 1.25rem;
}

.docs-audience-card-biz .docs-audience-pill {
    background: linear-gradient(135deg, rgba(255, 107, 74, 0.12), rgba(245, 158, 11, 0.1));
    color: var(--iy-coral);
}

.docs-audience-card-dev .docs-audience-pill {
    background: rgba(59, 130, 246, 0.1);
    color: var(--iy-sapphire);
}

.docs-audience-card-title {
    font-family: var(--iy-font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 0.85rem;
    color: var(--iy-text-primary);
}

.docs-audience-card-desc {
    font-family: var(--iy-font-body);
    font-size: 0.95rem;
    color: var(--iy-text-secondary);
    line-height: 1.75;
    margin-bottom: 1.5rem;
    text-align: left;
}

.docs-audience-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.75rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.docs-audience-features li {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0.55rem;
    font-family: var(--iy-font-body);
    font-size: 0.92rem;
    color: var(--iy-text-secondary);
    line-height: 1.5;
    text-align: left;
}

.docs-audience-features li::before {
    content: '✓';
    flex-shrink: 0;
    color: var(--iy-coral);
    font-weight: 800;
    margin-top: 1px;
}

.docs-audience-card-dev .docs-audience-features li::before {
    color: var(--iy-sapphire);
}

.docs-audience-card .docs-btn-primary,
.docs-audience-card .docs-btn-tech {
    align-self: flex-start;
    margin-top: auto;
}

/* ============================================================
   Value Cards
   ============================================================ */
.docs-value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 640px) {
    .docs-value-grid {
        grid-template-columns: 1fr;
    }
}

.docs-value-card {
    text-align: center;
    padding: 2rem 1rem;
    border-radius: var(--iy-radius-card);
    transition: transform 0.3s var(--iy-ease);
}

.docs-value-card:hover {
    transform: translateY(-4px);
}

.docs-value-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--iy-radius-icon);
    background: linear-gradient(135deg, rgba(255, 107, 74, 0.15), rgba(245, 158, 11, 0.12));
    font-size: 1.85rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--iy-shadow-soft);
}

.docs-value-title {
    font-family: var(--iy-font-sans);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--iy-text-primary);
    letter-spacing: -0.01em;
}

.docs-value-desc {
    font-family: var(--iy-font-body);
    font-size: 0.92rem;
    color: var(--iy-text-secondary);
    line-height: 1.75;
    margin: 0;
}

/* ============================================================
   CTA
   ============================================================ */
.docs-cta {
    width: 100%;
    padding: 5.5rem 0;
    text-align: center;
    background: linear-gradient(135deg,
        var(--iy-coral) 0%,
        var(--iy-coral-light) 50%,
        var(--iy-amber) 100%
    );
    position: relative;
    overflow: hidden;
}

.docs-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 35%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 35%, transparent 75%);
}

.docs-cta-inner {
    position: relative;
    z-index: 1;
    max-width: 640px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.docs-cta-title {
    font-family: var(--iy-font-serif);
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    color: #fff;
    line-height: 1.25;
}

.docs-cta-desc {
    font-family: var(--iy-font-body);
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 2.25rem;
    line-height: 1.75;
}

.docs-cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* CTA 区按钮反白 */
.docs-cta .docs-btn-primary {
    background: var(--iy-ink);
    color: #fff !important;
    box-shadow: 0 8px 32px rgba(12, 12, 14, 0.25);
}

.docs-cta .docs-btn-primary:hover {
    background: var(--iy-charcoal);
    box-shadow: 0 14px 40px rgba(12, 12, 14, 0.35);
}

.docs-cta .docs-btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
}

.docs-cta .docs-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: #fff;
    color: var(--iy-coral);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 996px) {
    .docs-hero {
        padding: 5rem 0 2rem;
    }

    .docs-hero-title {
        font-size: 2.3rem;
    }

    .docs-hero-desc {
        font-size: 1rem;
    }

    .docs-section,
    .docs-section-alt,
    .docs-cta {
        padding: 4rem 0;
    }

    .docs-section-title,
    .docs-cta-title {
        font-size: 1.7rem;
    }

    .docs-hero-ambient::before {
        width: 400px;
        height: 400px;
    }

    .docs-hero-ambient::after {
        width: 360px;
        height: 360px;
    }
}