/* ==========================================================================
   APP 介绍 / 下载页（app.html）
   ========================================================================== */

:root {
    --al-bg: #f6f8f7;
    --al-card: #ffffff;
    --al-text: #16211c;
    --al-text-2: #5d6b64;
    --al-text-3: #94a29b;
    --al-line: #e8eeeb;
    --al-green: #07c160;
    --al-green-dark: #06ad56;
    --al-green-soft: #e9fbf1;
    --al-dark: #101d17;
    --al-radius: 16px;
    --al-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 15px; }
body {
    font-family: var(--al-font);
    color: var(--al-text);
    background: var(--al-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

/* 统一版心宽度：PC 端 1500px，三段媒体查询（PC 默认 / 平板 ≤1000px / 小手机 ≤640px） */
.al-wrap { width: 1500px; max-width: calc(100% - 40px); margin: 0 auto; }

/* ------------------------------ 顶栏 ------------------------------ */
.al-top {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .9);
    backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--al-line);
    /* 立体阴影：贴边窄影 + 中层扩散 + 远层柔影 */
    box-shadow:
        0 1px 2px rgba(20, 24, 31, .06),
        0 4px 10px rgba(20, 24, 31, .07),
        0 12px 28px rgba(20, 24, 31, .09);
}
.al-top-inner { display: flex; align-items: center; gap: 26px; height: 90px; }
.al-brand { display: flex; align-items: center; gap: 11px; }
/* 全站统一 LOGO 图片（images/logo.png，205x70） */
.al-brand-logo { display: block; width: auto; height: 50px; }
.al-brand-mark {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, #38d97f, var(--al-green));
    color: #fff; font-size: 19px; font-weight: 700;
    box-shadow: 0 5px 14px rgba(7, 193, 96, .3);
}
.al-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.al-brand-text strong { font-size: 17px; letter-spacing: .3px; }
.al-brand-text em { font-style: normal; font-size: 11px; color: var(--al-text-3); margin-top: 2px; }
.al-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.al-nav a { padding: 7px 13px; border-radius: 8px; color: var(--al-text-2); font-size: 14.5px; transition: .15s; }
.al-nav a:hover { background: #f1f5f3; color: var(--al-text); }
.al-nav a.is-active { color: var(--al-green-dark); background: var(--al-green-soft); font-weight: 500; }
.al-top-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px; border-radius: 9px;
    background: var(--al-green); color: #fff;
    font-size: 14px; font-weight: 500;
    box-shadow: 0 4px 12px rgba(7, 193, 96, .24);
    transition: .15s;
}
.al-top-btn:hover { background: var(--al-green-dark); transform: translateY(-1px); }

/* ------------------------------ 主视觉 ------------------------------ */
.al-hero {
    position: relative;
    overflow: hidden;
    padding: 66px 0 74px;
    background:
        radial-gradient(900px 420px at 82% 6%, rgba(7, 193, 96, .13), transparent 62%),
        radial-gradient(700px 380px at 8% 96%, rgba(76, 217, 100, .10), transparent 60%),
        linear-gradient(180deg, #ffffff 0%, #f4fbf7 100%);
    border-bottom: 1px solid var(--al-line);
}
.al-hero-inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: 54px; align-items: center; }
.al-kicker {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 5px 12px; border-radius: 20px;
    background: var(--al-green-soft); color: var(--al-green-dark);
    font-size: 12.5px; font-weight: 500;
}
.al-kicker i { width: 6px; height: 6px; border-radius: 50%; background: var(--al-green); }
.al-hero h1 { margin-top: 18px; font-size: 44px; line-height: 1.24; letter-spacing: -.6px; }
.al-hero h1 span { color: var(--al-green); }
.al-hero-desc { margin-top: 16px; max-width: 520px; color: var(--al-text-2); font-size: 16px; line-height: 1.85; }
.al-hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 22px; color: var(--al-text-2); font-size: 13.5px; }
.al-hero-points span { display: inline-flex; align-items: center; gap: 6px; }
.al-hero-points svg { color: var(--al-green); flex: 0 0 auto; }
.al-dl-row { display: flex; align-items: center; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.al-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    height: 52px; padding: 0 30px; border-radius: 12px;
    font-size: 16px; font-weight: 600; letter-spacing: .2px;
    transition: transform .12s, box-shadow .18s, background .15s;
}
.al-btn:active { transform: translateY(1px); }
.al-btn-android {
    background: var(--al-green); color: #fff;
    box-shadow: 0 10px 24px rgba(7, 193, 96, .28);
}
.al-btn-android:hover { background: var(--al-green-dark); box-shadow: 0 12px 28px rgba(7, 193, 96, .34); }
.al-btn-ghost { background: #fff; color: var(--al-text); border: 1px solid var(--al-line); }
.al-btn-ghost:hover { border-color: #d6e2db; box-shadow: 0 6px 16px rgba(20, 40, 30, .06); }
.al-btn-disabled { background: #eef1ef; color: #a3ada8; cursor: not-allowed; box-shadow: none; }
.al-btn-meta { display: flex; flex-direction: column; line-height: 1.35; text-align: left; }
.al-btn-meta b { font-size: 16px; font-weight: 600; }
.al-btn-meta small { font-size: 11.5px; opacity: .82; }
.al-version-line { margin-top: 14px; color: var(--al-text-3); font-size: 12.5px; }
.al-version-line b { color: var(--al-text-2); font-weight: 500; }

/* 手机模型 */
.al-phone {
    position: relative;
    width: 292px;
    margin: 0 auto;
    padding: 11px;
    border-radius: 40px;
    background: linear-gradient(160deg, #1d2a24, #0b1410);
    box-shadow: 0 30px 70px rgba(13, 35, 25, .3), 0 4px 12px rgba(13, 35, 25, .18);
}
.al-phone::before {
    content: "";
    position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
    width: 86px; height: 22px; border-radius: 12px;
    background: #0b1410; z-index: 3;
}
.al-screen {
    position: relative;
    height: 560px;
    border-radius: 30px;
    overflow: hidden;
    background: #ededed;
    display: flex;
    flex-direction: column;
}
.al-status { height: 34px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; font-size: 11px; color: #1a1a1a; font-weight: 600; }
.al-status span:last-child { letter-spacing: 1px; }
.al-navbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 2px 16px 10px; color: #191919;
}
.al-navbar strong { font-size: 16px; }
.al-navbar .dots { letter-spacing: 2px; font-size: 14px; color: #4c4c4c; }
.al-seg { display: flex; gap: 6px; padding: 0 12px 10px; }
.al-seg span { font-size: 11px; padding: 3px 10px; border-radius: 11px; background: #fff; color: #5b5b5b; }
.al-seg span.on { background: #e7f8ee; color: var(--al-green-dark); }
.al-feed { flex: 1; overflow: hidden; background: #ededed; }
.al-feed-item { background: #fff; padding: 11px 14px; margin-bottom: 7px; }
.al-feed-head { display: flex; align-items: center; gap: 7px; margin-bottom: 6px; }
.al-dot-ava { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, #7ee2a8, #07c160); }
.al-feed-name { font-size: 10.5px; color: #3f3f3f; }
.al-feed-time { margin-left: auto; font-size: 9.5px; color: #b2b2b2; }
.al-feed-title { font-size: 13px; line-height: 1.45; font-weight: 600; color: #1a1a1a; }
.al-feed-text { margin-top: 4px; font-size: 10.5px; line-height: 1.6; color: #7a7a7a; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.al-feed-meta { display: flex; gap: 10px; margin-top: 6px; font-size: 9.5px; color: #b2b2b2; }
.al-tabbar { display: flex; height: 52px; background: #f7f7f7; border-top: 1px solid rgba(0,0,0,.07); }
.al-tab { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 9px; color: #6b6b6b; }
.al-tab.is-on { color: var(--al-green); }
.al-tab svg { display: block; }

.al-phone-badge {
    position: absolute;
    right: -26px; bottom: 52px;
    padding: 11px 15px;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 12px 30px rgba(13, 35, 25, .16);
    font-size: 12px; color: var(--al-text-2);
    line-height: 1.5;
}
.al-phone-badge b { display: block; color: var(--al-text); font-size: 15px; }

/* ------------------------------ 功能区 ------------------------------ */
.al-section { padding: 70px 0; }
.al-section.alt { background: #fff; border-top: 1px solid var(--al-line); border-bottom: 1px solid var(--al-line); }
.al-sec-head { text-align: center; max-width: 720px; margin: 0 auto 42px; }
.al-sec-head .tag { color: var(--al-green-dark); font-size: 13px; font-weight: 600; letter-spacing: 2px; }
.al-sec-head h2 { margin-top: 10px; font-size: 32px; letter-spacing: -.3px; }
.al-sec-head p { margin-top: 10px; color: var(--al-text-2); font-size: 15px; line-height: 1.8; }

.al-tabs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.al-tab-card {
    background: #fff; border-radius: var(--al-radius);
    padding: 24px 18px;
    border: 1px solid var(--al-line);
    transition: transform .18s, box-shadow .18s, border-color .18s;
}
.al-tab-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(18, 40, 28, .08); border-color: #cdeedc; }
.al-tab-icon {
    display: flex; align-items: center; justify-content: center;
    width: 48px; height: 48px; border-radius: 13px;
    background: var(--al-green-soft); color: var(--al-green-dark);
    margin-bottom: 16px;
}
.al-tab-card h3 { font-size: 17px; }
.al-tab-card p { margin-top: 7px; color: var(--al-text-2); font-size: 13.5px; line-height: 1.75; }
.al-tab-card ul { margin-top: 12px; }
.al-tab-card li { position: relative; padding-left: 14px; color: var(--al-text-2); font-size: 12.5px; line-height: 1.9; }
.al-tab-card li::before { content: ""; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; border-radius: 50%; background: var(--al-green); }

/* 功能亮点 */
.al-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.al-feature {
    display: flex; gap: 14px;
    padding: 24px;
    background: var(--al-bg);
    border-radius: var(--al-radius);
    border: 1px solid transparent;
    transition: .18s;
}
.al-feature:hover { background: #fff; border-color: var(--al-line); box-shadow: 0 12px 30px rgba(18, 40, 28, .06); }
.al-feature-icon {
    flex: 0 0 40px;
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 11px;
    background: #fff; color: var(--al-green-dark);
    box-shadow: 0 4px 10px rgba(18, 40, 28, .06);
}
.al-feature h3 { font-size: 15.5px; }
.al-feature p { margin-top: 5px; color: var(--al-text-2); font-size: 13px; line-height: 1.72; }

/* 截图带 */
.al-screens { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.al-shot {
    background: #fff;
    border: 1px solid var(--al-line);
    border-radius: 20px;
    padding: 14px;
    text-align: center;
    transition: .18s;
}
.al-shot:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(18, 40, 28, .08); }
.al-shot-screen {
    position: relative;
    height: 330px;
    border-radius: 14px;
    background: #ededed;
    overflow: hidden;
    text-align: left;
}
.al-shot-title { margin: 12px 0 2px; font-size: 14.5px; font-weight: 600; }
.al-shot-sub { color: var(--al-text-3); font-size: 12px; }

/* 截图内小结构 */
.al-mini-head { padding: 14px 12px 8px; text-align: center; font-size: 12px; font-weight: 600; color: #191919; background: #ededed; }
.al-mini-search { margin: 4px 10px 8px; height: 24px; border-radius: 5px; background: #fff; color: #b2b2b2; font-size: 9px; display: flex; align-items: center; padding: 0 9px; }
.al-mini-cell { display: flex; align-items: center; gap: 8px; padding: 8px 11px; background: #fff; margin-bottom: 1px; }
.al-mini-ava { width: 26px; height: 26px; border-radius: 5px; background: linear-gradient(135deg, #9fe7bd, #4cd98a); flex: 0 0 auto; }
.al-mini-ava.b { background: linear-gradient(135deg, #9fc9ff, #4c8dff); }
.al-mini-ava.c { background: linear-gradient(135deg, #ffcf9f, #ff9838); }
.al-mini-cell .t { font-size: 10px; color: #222; line-height: 1.3; }
.al-mini-cell .s { font-size: 8.5px; color: #b2b2b2; margin-top: 1px; }
.al-mini-cell .r { margin-left: auto; font-size: 8.5px; color: #b2b2b2; }
.al-mini-bubble { margin: 6px 12px; display: flex; gap: 6px; }
.al-mini-bubble span { max-width: 76%; padding: 7px 9px; border-radius: 5px; background: #fff; font-size: 9px; line-height: 1.5; color: #333; }
.al-mini-bubble.mine { justify-content: flex-end; }
.al-mini-bubble.mine span { background: #95ec69; }
.al-mini-card { margin: 6px 10px; padding: 9px; border-radius: 7px; background: #fff; }
.al-mini-card .n { font-size: 10px; font-weight: 600; }
.al-mini-card .d { margin-top: 3px; font-size: 8.5px; color: #9a9a9a; line-height: 1.5; }
.al-mini-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 8px 10px; }
.al-mini-grid div { background: #fff; border-radius: 7px; padding: 9px 2px; text-align: center; font-size: 8px; color: #4c4c4c; }
.al-mini-grid i { display: block; width: 18px; height: 18px; margin: 0 auto 4px; border-radius: 5px; background: var(--al-green-soft); }

/* ------------------------------ 下载区 ------------------------------ */
.al-download { padding: 70px 0; background: linear-gradient(180deg, #0f1d16, #13251c); color: #eaf5ee; }
.al-dl-head { text-align: center; max-width: 680px; margin: 0 auto 40px; }
.al-dl-head h2 { font-size: 32px; }
.al-dl-head p { margin-top: 10px; color: #9fb5a9; font-size: 15px; }
.al-dl-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 20px; }
.al-dl-main {
    display: flex; align-items: center; gap: 26px;
    padding: 30px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(76, 217, 138, .16), rgba(7, 193, 96, .06));
    border: 1px solid rgba(126, 226, 168, .22);
}
.al-android-icon {
    flex: 0 0 74px;
    display: flex; align-items: center; justify-content: center;
    width: 74px; height: 74px; border-radius: 20px;
    background: linear-gradient(135deg, #4cd98a, #07c160);
    color: #fff;
    box-shadow: 0 12px 30px rgba(7, 193, 96, .24);
}
.al-dl-main h3 { font-size: 20px; }
.al-dl-main p { margin-top: 5px; color: #9fb5a9; font-size: 13px; }
.al-dl-meta { display: flex; gap: 18px; margin-top: 12px; color: #b9cbbf; font-size: 12.5px; flex-wrap: wrap; }
.al-dl-meta b { color: #fff; font-weight: 500; }
.al-dl-main .al-btn { margin-left: auto; flex: 0 0 auto; }
.al-dl-side { display: flex; flex-direction: column; gap: 14px; }
.al-dl-side .card { flex: 1; padding: 22px; border-radius: 18px; background: rgba(255,255,255,.045); border: 1px solid rgba(255,255,255,.08); }
.al-dl-side h4 { font-size: 15px; }
.al-dl-side p { margin-top: 6px; color: #9fb5a9; font-size: 12.5px; line-height: 1.7; }
.al-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 34px; }
.al-step { padding: 20px 22px; border-radius: 16px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.07); }
.al-step b { display: flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 8px; background: var(--al-green); color: #fff; font-size: 13px; margin-bottom: 12px; }
.al-step h4 { font-size: 14.5px; }
.al-step p { margin-top: 5px; color: #9fb5a9; font-size: 12.5px; line-height: 1.7; }

/* FAQ */
.al-faq { max-width: 820px; margin: 0 auto; }
.al-faq details { background: #fff; border: 1px solid var(--al-line); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
.al-faq summary { list-style: none; display: flex; align-items: center; justify-content: space-between; font-size: 15px; cursor: pointer; font-weight: 500; }
.al-faq summary::-webkit-details-marker { display: none; }
.al-faq summary::after { content: "+"; color: #a8b5ae; font-size: 20px; line-height: 1; }
.al-faq[open] summary::after { content: "−"; }
.al-faq p { margin-top: 10px; color: var(--al-text-2); font-size: 14px; line-height: 1.8; }

/* 页脚 */
.al-footer { padding: 34px 0 44px; background: #fff; border-top: 1px solid var(--al-line); }
.al-footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; }
.al-footer strong { font-size: 15px; }
.al-footer p { margin-top: 6px; color: var(--al-text-3); font-size: 12.5px; }
.al-footer-links { display: flex; gap: 20px; color: var(--al-text-2); font-size: 13px; flex-wrap: wrap; }
.al-footer-links a:hover { color: var(--al-green-dark); }

/* 状态徽标 */
.al-status-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 3px 10px; border-radius: 12px;
    background: var(--al-green-soft); color: var(--al-green-dark);
    font-size: 11.5px; font-weight: 500;
}
.al-status-pill.pending { background: #fff8e8; color: #a97a12; }

@media (max-width: 1000px) {
    .al-wrap { max-width: calc(100% - 32px); }
    .al-hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .al-phone { margin-top: 10px; }
    .al-phone-badge { right: -8px; }
    .al-tabs { grid-template-columns: repeat(3, 1fr); }
    .al-features { grid-template-columns: repeat(2, 1fr); }
    .al-screens { grid-template-columns: repeat(3, 1fr); }
    .al-dl-grid { grid-template-columns: 1fr; }
    .al-dl-main { flex-wrap: wrap; }
    .al-dl-main .al-btn { margin-left: 0; }
    .al-steps { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .al-screens { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    html { font-size: 14px; }
    .al-wrap { max-width: calc(100% - 24px); }
    .al-wrap { max-width: calc(100% - 24px); }
    .al-nav { display: none; }
    .al-hero { padding: 40px 0 50px; }
    .al-hero h1 { font-size: 30px; }
    .al-hero-desc { font-size: 14.5px; }
    .al-btn { width: 100%; }
    .al-tabs, .al-features, .al-screens { grid-template-columns: 1fr; }    .al-section, .al-download { padding: 46px 0; }
    .al-sec-head h2, .al-dl-head h2 { font-size: 24px; }
    .al-footer-inner { flex-direction: column; }
    .al-dl-main { padding: 22px; }
    .al-phone { width: 260px; }
    .al-screen { height: 500px; }
}