/* ==============================================================
 * 撮合系统展示站 - 全局样式
 * 设计目标：科技感、紧凑、细腻、无大片留白、PC/H5 自适应
 * ============================================================== */

/* ---------- 设计令牌（CSS 变量，支持主题切换） ---------- */
:root {
    --c-bg:        #f7f8fb;
    --c-bg-elev:   #ffffff;
    --c-bg-soft:   #f0f2f7;
    --c-border:    #e5e8f0;
    --c-text:      #1a1f36;
    --c-text-2:    #4a5170;
    --c-text-3:    #8892a8;
    --c-primary:   #2563eb;
    --c-primary-2: #7c3aed;
    --c-accent:    #06b6d4;
    --c-success:   #10b981;
    --c-warn:      #f59e0b;
    --c-danger:    #ef4444;

    --shadow-sm:   0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.06);
    --shadow-md:   0 4px 12px rgba(15,23,42,.06), 0 2px 4px rgba(15,23,42,.04);
    --shadow-lg:   0 12px 32px rgba(15,23,42,.10), 0 4px 12px rgba(15,23,42,.06);

    --grad-primary:   linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #06b6d4 100%);
    --grad-soft:      linear-gradient(135deg, #eff6ff 0%, #f3e8ff 50%, #ecfeff 100%);
    --grad-border:    linear-gradient(135deg, rgba(37,99,235,.4), rgba(124,58,237,.4), rgba(6,182,212,.4));

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

/* 暗色主题：通过 [data-theme="dark"] 切换 */
[data-theme="dark"] {
    --c-bg:        #0a0e1a;
    --c-bg-elev:   #131826;
    --c-bg-soft:   #0e1320;
    --c-border:    #1f2742;
    --c-text:      #e8ecf5;
    --c-text-2:    #a8b1c6;
    --c-text-3:    #6b7592;
    --c-primary:   #60a5fa;
    --c-primary-2: #a78bfa;
    --c-accent:    #22d3ee;
    --c-success:   #34d399;

    --shadow-sm:   0 1px 2px rgba(0,0,0,.3), 0 1px 3px rgba(0,0,0,.4);
    --shadow-md:   0 4px 12px rgba(0,0,0,.4), 0 2px 4px rgba(0,0,0,.3);
    --shadow-lg:   0 12px 32px rgba(0,0,0,.5), 0 4px 12px rgba(0,0,0,.4);

    --grad-soft:   linear-gradient(135deg, #0c1226 0%, #1a1340 50%, #082b3a 100%);
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color .3s ease, color .3s ease;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--c-primary-2); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- 通用容器 ---------- */
.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部导航 ---------- */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(247, 248, 251, 0.85);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--c-border);
    transition: background-color .3s ease;
}
[data-theme="dark"] .nav { background: rgba(10, 14, 26, 0.85); }
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 56px;
}
.brand-logo {
    display: flex; align-items: center; gap: 8px;
    font-weight: 700; font-size: 17px; color: var(--c-text);
}
.brand-logo-mark {
    width: 28px; height: 28px; border-radius: 7px;
    background: var(--grad-primary);
    box-shadow: 0 4px 12px rgba(37,99,235,.3);
    display: grid; place-items: center; color: #fff; font-size: 14px; font-weight: 800;
}
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-link {
    padding: 7px 14px; border-radius: 8px;
    color: var(--c-text-2); font-size: 14px; font-weight: 500;
    transition: all .2s;
}
.nav-link:hover { background: var(--c-bg-soft); color: var(--c-text); }
.nav-actions { display: flex; align-items: center; gap: 4px; }
.icon-btn {
    width: 36px; height: 36px; border-radius: 8px;
    display: grid; place-items: center; color: var(--c-text-2);
    transition: all .2s;
}
.icon-btn:hover { background: var(--c-bg-soft); color: var(--c-text); }
.nav-cta {
    padding: 7px 14px; border-radius: 8px;
    background: var(--grad-primary); color: #fff !important;
    font-size: 14px; font-weight: 600;
    box-shadow: 0 2px 8px rgba(37,99,235,.25);
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,.4); color: #fff !important; }
@media (max-width: 720px) { .nav-links { display: none; } }

/* ---------- Hero ---------- */
.hero {
    position: relative; overflow: hidden;
    padding: 72px 0 64px;
    background: var(--grad-soft);
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(37,99,235,.15) 1px, transparent 0);
    background-size: 24px 24px;
    mask-image: linear-gradient(to bottom, black 30%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 30%, transparent 100%);
    pointer-events: none;
}
.hero-grid {
    position: relative;
    display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center;
}
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border-radius: 999px;
    background: rgba(37,99,235,.10); color: var(--c-primary);
    font-size: 12px; font-weight: 600; letter-spacing: .04em;
    border: 1px solid rgba(37,99,235,.20);
    margin-bottom: 16px;
}
.hero-eyebrow .dot {
    width: 6px; height: 6px; border-radius: 50%; background: var(--c-success);
    box-shadow: 0 0 0 3px rgba(16,185,129,.2);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(16,185,129,.2); }
    50% { box-shadow: 0 0 0 6px rgba(16,185,129,.0); }
}
.hero-title {
    font-size: clamp(36px, 5.5vw, 56px); font-weight: 800; line-height: 1.1;
    letter-spacing: -.025em;
}
.hero-title .grad {
    background: var(--grad-primary);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
    margin-top: 16px; font-size: clamp(15px, 1.6vw, 17px);
    color: var(--c-text-2); max-width: 540px;
}
.hero-tags {
    margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px;
}
.hero-tag {
    padding: 6px 14px; border-radius: 999px;
    background: var(--c-bg-elev); color: var(--c-text);
    font-size: 13px; font-weight: 500;
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow-sm);
}
.hero-cta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 11px 22px; border-radius: 10px;
    background: var(--grad-primary); color: #fff;
    font-size: 14px; font-weight: 600;
    box-shadow: 0 4px 16px rgba(37,99,235,.30);
    transition: all .2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.40); color: #fff; }
.btn-ghost {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 11px 22px; border-radius: 10px;
    background: var(--c-bg-elev); color: var(--c-text);
    font-size: 14px; font-weight: 600;
    border: 1px solid var(--c-border);
    transition: all .2s;
}
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* Hero 右侧装饰：仪表盘模拟卡片 */
.hero-visual {
    position: relative; aspect-ratio: 1.1 / 1;
    display: grid; place-items: center;
}
.dash-card {
    position: absolute; background: var(--c-bg-elev);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--c-border);
    padding: 14px 16px;
    font-size: 12px;
}
.dash-card .lbl { color: var(--c-text-3); font-size: 11px; }
.dash-card .val { font-size: 22px; font-weight: 800; color: var(--c-text); margin-top: 2px; }
.dash-card .val.g { background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dash-card .delta { font-size: 11px; color: var(--c-success); margin-top: 2px; }
.dash-1 { top: 8%; left: 4%; width: 130px; animation: float 6s ease-in-out infinite; }
.dash-2 { top: 4%; right: 6%; width: 150px; animation: float 6s ease-in-out infinite -2s; }
.dash-3 { bottom: 14%; left: 8%; width: 140px; animation: float 6s ease-in-out infinite -4s; }
.dash-4 { bottom: 6%; right: 0; width: 160px; animation: float 6s ease-in-out infinite -3s; }
.dash-grid-bg {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(var(--c-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--c-border) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    opacity: .4;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
@media (max-width: 900px) {
    .hero { padding: 48px 0 40px; }
    .hero-grid { grid-template-columns: 1fr; gap: 28px; }
    .hero-visual { aspect-ratio: 1.4 / 1; max-width: 480px; margin: 0 auto; }
}
@media (max-width: 480px) {
    .dash-1, .dash-2, .dash-3, .dash-4 { font-size: 11px; padding: 10px 12px; }
    .dash-1 { width: 110px; } .dash-2 { width: 120px; }
    .dash-3 { width: 116px; } .dash-4 { width: 132px; }
}

/* ---------- 通用 Section ---------- */
.section { padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-eyebrow {
    display: inline-block; padding: 4px 12px; border-radius: 999px;
    background: rgba(37,99,235,.08); color: var(--c-primary);
    font-size: 12px; font-weight: 600; letter-spacing: .04em;
    margin-bottom: 10px;
}
.section-title {
    font-size: clamp(26px, 3.5vw, 34px); font-weight: 800;
    letter-spacing: -.02em; color: var(--c-text);
}
.section-sub {
    margin-top: 10px; font-size: 15px; color: var(--c-text-2);
    max-width: 580px; margin-left: auto; margin-right: auto;
}
@media (max-width: 720px) {
    .section { padding: 48px 0; }
    .section-head { margin-bottom: 28px; }
}

/* ---------- 场景卡片 ---------- */
.scene-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}
.scene-card {
    position: relative; overflow: hidden;
    padding: 22px 18px;
    background: var(--c-bg-elev);
    border-radius: var(--radius-md);
    border: 1px solid var(--c-border);
    transition: all .25s cubic-bezier(.4,0,.2,1);
}
.scene-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--card-grad, var(--grad-primary));
    opacity: .8;
}
.scene-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.scene-icon {
    width: 44px; height: 44px; border-radius: 12px;
    background: var(--card-bg, rgba(37,99,235,.08));
    color: var(--card-color, var(--c-primary));
    display: grid; place-items: center; font-size: 22px;
    margin-bottom: 14px;
}
.scene-name {
    font-size: 16px; font-weight: 700; color: var(--c-text);
    margin-bottom: 6px;
}
.scene-desc {
    font-size: 13px; color: var(--c-text-2); line-height: 1.5;
    margin-bottom: 12px;
}
.scene-feats {
    display: flex; flex-wrap: wrap; gap: 4px;
}
.scene-feat {
    font-size: 11px; padding: 2px 8px; border-radius: 4px;
    background: var(--c-bg-soft); color: var(--c-text-3);
}
@media (max-width: 1100px) { .scene-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px)  { .scene-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px)  { .scene-grid { grid-template-columns: 1fr; } }

/* 5 个场景各自的配色变量 */
.scene-card[data-scene="errand"]    { --card-bg:rgba(37,99,235,.10);  --card-color:#2563eb; --card-grad:linear-gradient(90deg,#2563eb,#3b82f6); }
.scene-card[data-scene="driving"]   { --card-bg:rgba(124,58,237,.10); --card-color:#7c3aed; --card-grad:linear-gradient(90deg,#7c3aed,#a78bfa); }
.scene-card[data-scene="taxi"]      { --card-bg:rgba(6,182,212,.10);  --card-color:#06b6d4; --card-grad:linear-gradient(90deg,#06b6d4,#22d3ee); }
.scene-card[data-scene="ai-drama"]  { --card-bg:rgba(236,72,153,.10); --card-color:#ec4899; --card-grad:linear-gradient(90deg,#ec4899,#f472b6); }
.scene-card[data-scene="game-coach"]{ --card-bg:rgba(245,158,11,.10); --card-color:#f59e0b; --card-grad:linear-gradient(90deg,#f59e0b,#fbbf24); }

/* ---------- 测试入口 ---------- */
.test-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.test-card {
    background: var(--c-bg-elev);
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    padding: 28px 24px;
    display: flex; flex-direction: column; gap: 16px;
    transition: all .25s;
}
.test-card:hover { box-shadow: var(--shadow-md); }
.test-head { display: flex; align-items: center; gap: 12px; }
.test-icon {
    width: 40px; height: 40px; border-radius: 10px;
    display: grid; place-items: center; font-size: 20px;
    background: rgba(37,99,235,.10); color: var(--c-primary);
}
.test-card[data-test="rider"] .test-icon { background: rgba(124,58,237,.10); color: #7c3aed; }
.test-card[data-test="admin"] .test-icon { background: rgba(6,182,212,.10); color: #06b6d4; }
.test-name { font-size: 17px; font-weight: 700; }
.test-tag { font-size: 11px; padding: 2px 8px; border-radius: 4px; background: var(--c-bg-soft); color: var(--c-text-3); }
.test-desc { font-size: 13px; color: var(--c-text-2); }
.test-body { display: flex; gap: 16px; align-items: center; }
.test-qr {
    width: 120px; height: 120px; border-radius: 10px;
    background: #fff; padding: 6px;
    border: 1px solid var(--c-border);
    flex-shrink: 0;
}
.test-qr img { width: 100%; height: 100%; object-fit: contain; }
.test-info { flex: 1; min-width: 0; }
.test-url {
    font-family: var(--font-mono); font-size: 12px;
    color: var(--c-text-3);
    word-break: break-all;
    padding: 6px 10px; border-radius: 6px;
    background: var(--c-bg-soft);
    margin-bottom: 8px;
}
.test-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.test-actions .btn-primary,
.test-actions .btn-ghost { padding: 8px 14px; font-size: 13px; }
.test-actions .btn-ghost { background: var(--c-bg-soft); }

.test-card.apk-card {
    background: linear-gradient(135deg, rgba(124,58,237,.05) 0%, rgba(37,99,235,.05) 100%);
    border-color: rgba(124,58,237,.25);
}
.apk-info { flex: 1; }
.apk-name { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.apk-meta { font-size: 12px; color: var(--c-text-3); margin-bottom: 12px; }
.apk-meta b { color: var(--c-text-2); font-weight: 600; }
.apk-features {
    display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
    margin: 12px 0; font-size: 12px; color: var(--c-text-2);
}
.apk-features li {
    list-style: none; padding-left: 16px; position: relative;
}
.apk-features li::before {
    content: '✓'; position: absolute; left: 0; color: var(--c-success); font-weight: 700;
}

@media (max-width: 900px) { .test-grid { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .test-body { flex-direction: column; align-items: flex-start; } .test-qr { width: 100px; height: 100px; } }

/* ---------- 后台截图网格 ---------- */
.shot-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
    margin-top: 10px;
}
.shot-thumb {
    aspect-ratio: 4 / 3;
    border-radius: 8px; overflow: hidden; cursor: pointer;
    background: var(--c-bg-soft);
    border: 1px solid var(--c-border);
    transition: all .2s;
    position: relative;
}
.shot-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.shot-thumb:hover { transform: scale(1.02); box-shadow: var(--shadow-md); border-color: var(--c-primary); }
.shot-thumb::after {
    content: '🔍'; position: absolute; right: 6px; bottom: 6px;
    width: 24px; height: 24px; border-radius: 50%;
    background: rgba(0,0,0,.6); color: #fff;
    display: grid; place-items: center; font-size: 12px;
    opacity: 0; transition: opacity .2s;
}
.shot-thumb:hover::after { opacity: 1; }

/* ---------- Lightbox ---------- */
.lightbox {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0,0,0,.92);
    display: none; align-items: center; justify-content: center;
    padding: 20px;
}
.lightbox.open { display: flex; animation: fadein .2s ease; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }
.lightbox-img {
    max-width: 90vw; max-height: 86vh;
    border-radius: 8px;
    box-shadow: 0 24px 64px rgba(0,0,0,.6);
}
.lightbox-cap {
    position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
    color: #fff; font-size: 14px; padding: 6px 16px;
    background: rgba(255,255,255,.10); border-radius: 999px;
    backdrop-filter: blur(8px);
}
.lightbox-close {
    position: absolute; top: 20px; right: 20px;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,.10); color: #fff;
    display: grid; place-items: center; font-size: 22px;
    transition: all .2s;
}
.lightbox-close:hover { background: rgba(255,255,255,.20); }
.lightbox-prev, .lightbox-next {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(255,255,255,.10); color: #fff;
    display: grid; place-items: center; font-size: 24px;
    transition: all .2s;
}
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,.20); }

/* ---------- 联系（Footer）---------- */
.contact {
    padding: 56px 0 32px;
    background: var(--c-bg-soft);
    border-top: 1px solid var(--c-border);
}
.contact-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 36px;
    align-items: center;
}
.contact-title {
    font-size: clamp(22px, 3vw, 28px); font-weight: 800;
    letter-spacing: -.02em;
}
.contact-text { color: var(--c-text-2); margin-top: 10px; font-size: 14px; }
.contact-qr-wrap { display: flex; align-items: center; gap: 24px; justify-content: flex-end; }
.contact-qr {
    width: 140px; height: 140px; border-radius: 12px;
    background: #fff; padding: 8px;
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow-sm);
}
.contact-qr img { width: 100%; height: 100%; object-fit: contain; }
.contact-qr-cap { font-size: 13px; color: var(--c-text-2); }
.contact-qr-cap b { display: block; color: var(--c-text); font-size: 15px; margin-bottom: 2px; }
.footer-bar {
    margin-top: 36px; padding-top: 20px;
    border-top: 1px solid var(--c-border);
    text-align: center; font-size: 12px; color: var(--c-text-3);
}
@media (max-width: 720px) {
    .contact-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
    .contact-qr-wrap { justify-content: center; flex-direction: column; gap: 12px; }
}

/* ---------- 回到顶部 ---------- */
.to-top {
    position: fixed; right: 20px; bottom: 20px; z-index: 40;
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--c-bg-elev); color: var(--c-text-2);
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow-md);
    display: none; place-items: center; font-size: 18px;
    transition: all .2s;
}
.to-top:hover { color: var(--c-primary); transform: translateY(-2px); }
.to-top.show { display: grid; }

/* ---------- 打印 / 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}