/* ============================================================
   PyPackager · 版式层（Layout v7 · 仪器台）
   加载顺序：style.css → layout.css
   职责边界：仅负责「栅格 / 节奏 / 区块编排 / 响应式」；
             组件视觉令牌统一由 style.css 提供。
   基准：12 栏栅格 · 1240px 版心 · 大留白 · 1px 细线分层
   ============================================================ */

/* ---------- 1. 版式令牌 ---------- */
:root {
    --max-w: 1240px;
    --grid-gutter: 24px;
    --section-py: clamp(88px, 10vw, 152px);
    --card-gap: 20px;
    --shell-inset: 56px;
}

/* ---------- 2. 栅格基建 ---------- */
.container { width: min(var(--max-w), 100% - var(--shell-inset)); }

/* ---------- 2b. 区块编排（按转化逻辑重排视觉顺序） ---------- */
main { display: flex; flex-direction: column; }
main > #hero { order: 1; }
main > .strip { order: 2; }
main > #features { order: 3; }
main > #compare { order: 4; }
main > #frameworks { order: 5; }
main > #workflow { order: 6; }
main > #tech { order: 7; }
main > #purchase { order: 8; }
main > #download { order: 9; }

/* ---------- 3. 区块节奏 + 工程编号 ---------- */
.section { padding-block: var(--section-py); }

/* 内容区不透明，保证背景插画只在首屏出现 */
.section-alt { background: var(--bg); }

.section > .container { position: relative; z-index: 1; }

.section::before {
    content: '';
    position: absolute;
    top: clamp(18px, 3vw, 44px);
    right: clamp(18px, 5vw, 72px);
    z-index: 0;
    font-family: var(--font-mono);
    font-size: clamp(72px, 12vw, 168px);
    font-weight: 700;
    line-height: 0.78;
    letter-spacing: -0.05em;
    color: var(--text);
    opacity: 0.04;
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
}
.section-ink::before { color: var(--ink-text); opacity: 0.07; }

/* 编号按视觉顺序（与 order 重排一致） */
#features::before { content: '01'; }
#compare::before { content: '02'; }
#frameworks::before { content: '03'; }
#workflow::before { content: '04'; }
#tech::before { content: '05'; }
#purchase::before { content: '06'; }
#download::before { content: '07'; }

/* ---------- 4. 区块标题：编辑式左右分栏 + 细线收口 ---------- */
.section-head {
    max-width: none;
    margin: 0 0 var(--sp-9);
    padding-bottom: var(--sp-5);
    text-align: left;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    column-gap: var(--grid-gutter);
    row-gap: var(--sp-3);
    border-bottom: 1px solid var(--border);
}
.section-head .section-tag { grid-column: 1 / -1; margin-bottom: 0; }
.section-head .section-title { grid-column: 1; }
.section-head .section-desc { grid-column: 2; margin-top: 0; }
.section-title { font-size: clamp(30px, 4.4vw, 46px); }
.section-ink .section-head { border-bottom-color: var(--ink-border); }

/* ---------- 5. Hero：全屏首屏 ---------- */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--nav-h) + var(--sp-9));
    padding-bottom: var(--sp-10);
    background: transparent;
}
.hero-inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(44px, 6vw, 88px);
}
.hero-title { font-size: clamp(38px, 5.9vw, 60px); }
.hero-desc { max-width: 46ch; }

.hero-scroll {
    position: absolute;
    left: 50%;
    bottom: 22px;
    z-index: 2;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-faint);
    pointer-events: none;
}
.hero-scroll::after {
    content: '';
    width: 1px;
    height: 42px;
    background: linear-gradient(180deg, var(--accent), transparent);
    animation: scroll-hint var(--dur-hint) var(--ease-enter) infinite;
}
@keyframes scroll-hint {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    35% { opacity: 1; }
    100% { opacity: 0; transform: scaleY(1); transform-origin: top; }
}

/* ---------- 6. 功能特性：12 栏不对称 Bento ---------- */
.bento {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--card-gap);
}
.bento-card { grid-column: span 4; }
.bento-card.wide { grid-column: span 7; }
.bento-card.wide + .bento-card { grid-column: span 5; }
.bento-card.full { grid-column: 1 / -1; }

/* ---------- 7. 工作流程：左右交错 ---------- */
.workflow {
    max-width: none;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--card-gap) var(--grid-gutter);
    padding-left: 0;
}
.workflow::before { display: none; }
.workflow-step { grid-column: 1 / span 6; }
.workflow-step:nth-child(even) { grid-column: 7 / span 6; }

/* ---------- 8. 技术架构：12 栏 ---------- */
.tech-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--card-gap);
}
.tech-card { grid-column: span 3; }
.tech-detail { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }

/* ---------- 9. 效率对比 ---------- */
.compare { gap: clamp(20px, 3vw, 32px); }

/* ---------- 10. 支持框架：三列并排 ---------- */
.frameworks {
    max-width: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--grid-gutter);
    align-items: start;
}

/* ---------- 11. 购买 / 下载 ---------- */
.purchase-card { grid-template-columns: minmax(0, 1.6fr) auto; }
.download-card { grid-template-columns: minmax(0, 1.5fr) auto; }

/* ---------- 12. 页脚 ---------- */
.footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
    gap: var(--sp-10);
}

/* ---------- 13. 响应式 ---------- */

/* 平板横屏 */
@media (max-width: 1024px) {
    .section-head { grid-template-columns: 1fr; }
    .section-head .section-desc { grid-column: 1; margin-top: var(--sp-3); }

    .bento-card { grid-column: span 6; }
    .bento-card.wide,
    .bento-card.wide + .bento-card { grid-column: span 12; }

    .tech-card { grid-column: span 6; }

    .workflow-step,
    .workflow-step:nth-child(even) { grid-column: 1 / -1; }

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

/* 平板竖屏 */
@media (max-width: 880px) {
    .section { padding-block: clamp(64px, 9vw, 96px); }
    .section-head { margin-bottom: var(--sp-8); }

    .hero {
        min-height: 0;
        padding-top: calc(var(--nav-h) + var(--sp-9));
        padding-bottom: var(--sp-9);
    }
    .hero-inner { grid-template-columns: 1fr; }
    .hero-scroll { display: none; }

    .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .bento-card,
    .bento-card.wide,
    .bento-card.wide + .bento-card { grid-column: span 1; }
    .bento-card.full { grid-column: 1 / -1; }

    .tech-detail { grid-template-columns: 1fr; }
    .frameworks { grid-template-columns: 1fr; }

    .purchase-card,
    .download-card { grid-template-columns: 1fr; }
}

/* 手机 */
@media (max-width: 768px) {
    :root { --grid-gutter: 16px; --card-gap: 16px; }

    .section::before { font-size: clamp(56px, 18vw, 96px); }
    .compare { grid-template-columns: 1fr; }
    .tech-card { grid-column: span 12; }
    .footer-inner { grid-template-columns: 1fr; row-gap: var(--sp-7); }
}

/* 窄屏 */
@media (max-width: 560px) {
    :root { --shell-inset: 32px; }
    .bento { grid-template-columns: 1fr; }
    .bento-card,
    .bento-card.wide,
    .bento-card.wide + .bento-card,
    .bento-card.full { grid-column: 1 / -1; }
    .section-head { margin-bottom: var(--sp-7); }
}

/* 小屏 */
@media (max-width: 400px) {
    :root { --shell-inset: 28px; }
    .section::before { display: none; }
}