/* ==========================================================
   landing-refresh.css · 首页介绍页视觉升级（仅作用于 #landingPage）
   在 landing.css 之后加载，用更细腻的层次、渐变与留白替换旧版扁平样式。
   ========================================================== */

#landingPage {
    --lp-primary: #2563eb;
    --lp-primary-2: #1d4ed8;
    --lp-primary-deep: #0b1f4b;
    --lp-accent: #f97316;
    --lp-accent-2: #fb923c;
    --lp-ink: #0b1220;
    --lp-body: #3f4a5c;
    --lp-muted: #6b7688;
    --lp-line: #e6ecf7;
    --lp-soft: #f4f7fe;
    --lp-canvas: #ffffff;
    --lp-radius: 20px;
    background: #fff;
    color: var(--lp-body);
    -webkit-font-smoothing: antialiased;
}

/* ---------------- 顶部导航 ---------------- */
#landingPage .landing-nav {
    height: 70px;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(15, 35, 80, .06);
    box-shadow: 0 12px 30px -26px rgba(11, 31, 75, .55);
}

#landingPage .landing-brand {
    font-size: 17px;
    letter-spacing: -.2px;
}

#landingPage .landing-brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 11px;
    background: linear-gradient(140deg, #3b82f6, #1d4ed8);
    box-shadow: 0 10px 20px -10px rgba(37, 99, 235, .85);
}

#landingPage .landing-nav-links a {
    padding: 9px 15px;
    border-radius: 10px;
    color: #4b5768;
    font-size: 13.5px;
    font-weight: 500;
}

#landingPage .landing-nav-links a:hover {
    color: var(--lp-primary-2);
    background: #eef4ff;
}

#landingPage .landing-menu {
    border-color: #e2e9f6;
    border-radius: 10px;
}

/* ---------------- 按钮 ---------------- */
#landingPage .landing-btn {
    border-radius: 11px;
    font-weight: 600;
    letter-spacing: .01em;
    transition: transform .18s, box-shadow .18s, background .18s, color .18s, border-color .18s;
}

#landingPage .landing-btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-color: transparent;
    box-shadow: 0 12px 24px -14px rgba(29, 78, 216, .85);
}

#landingPage .landing-btn-primary:hover {
    background: linear-gradient(135deg, #2f7bf5, #1a45c2);
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 16px 28px -14px rgba(29, 78, 216, .9);
}

#landingPage .landing-btn-ghost {
    color: #3f4a5c;
}

#landingPage .landing-btn-outline {
    background: #fff;
    border-color: #dbe3f2;
    color: #21324f;
}

#landingPage .landing-btn-outline:hover {
    border-color: #2563eb;
    color: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 12px 24px -18px rgba(37, 99, 235, .9);
}

#landingPage .landing-btn-lg {
    height: 50px;
    padding: 0 26px;
    border-radius: 13px;
    font-size: 14.5px;
}

/* ---------------- 主视觉 ---------------- */
#landingPage .landing-hero {
    padding: 92px 24px 0;
    background:
        radial-gradient(900px 520px at 50% -8%, #e9f0ff 0%, rgba(233, 240, 255, 0) 72%),
        radial-gradient(620px 400px at 10% 6%, rgba(249, 115, 22, .10), transparent 66%),
        radial-gradient(720px 440px at 90% 0%, rgba(37, 99, 235, .13), transparent 66%),
        #fff;
    border-bottom: 1px solid #eef2f9;
    overflow: hidden;
}

/* 顶部细网格，让纯色背景更有层次 */
#landingPage .landing-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(15, 35, 80, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 35, 80, .04) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(760px 380px at 50% 0%, #000 25%, transparent 78%);
    mask-image: radial-gradient(760px 380px at 50% 0%, #000 25%, transparent 78%);
    pointer-events: none;
}

#landingPage .landing-hero-inner {
    position: relative;
    z-index: 1;
}

#landingPage .landing-badge {
    padding: 8px 16px;
    border-color: #dfe8fb;
    background: rgba(255, 255, 255, .92);
    color: #1d4ed8;
    font-size: 12.5px;
    box-shadow: 0 12px 26px -20px rgba(11, 31, 75, .8);
}

#landingPage .landing-badge i {
    width: 7px;
    height: 7px;
    background: #22c55e;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, .16);
    animation: lpPulse 2.6s ease-in-out infinite;
}

@keyframes lpPulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(34, 197, 94, .16); }
    50% { box-shadow: 0 0 0 8px rgba(34, 197, 94, .05); }
}

#landingPage .landing-hero h1 {
    margin: 26px 0 0;
    color: var(--lp-ink);
    font-size: clamp(30px, 4.4vw, 52px);
    line-height: 1.16;
    letter-spacing: -1.4px;
    text-wrap: balance;
}

#landingPage .landing-hero h1 em {
    margin-top: 6px;
    font-size: clamp(26px, 3.7vw, 42px);
    letter-spacing: -1px;
    background: linear-gradient(100deg, #f97316 0%, #fb923c 55%, #f59e0b 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

#landingPage .landing-subtitle {
    margin: 22px auto 0;
    max-width: 640px;
    color: var(--lp-muted);
    font-size: 15.5px;
    line-height: 1.9;
}

#landingPage .landing-actions {
    gap: 14px;
    margin-top: 34px;
}

#landingPage .landing-platforms {
    margin-top: 30px;
}

#landingPage .landing-platforms span {
    color: #7d889b;
    font-size: 12px;
}

#landingPage .landing-platforms b {
    padding: 6px 14px;
    border-color: transparent;
    background: #f2f6ff;
    color: #33425c;
    font-weight: 600;
    transition: background .18s, color .18s, transform .18s;
}

#landingPage .landing-platforms b:hover {
    background: #e6eeff;
    color: #1d4ed8;
    transform: translateY(-1px);
}

/* ---------------- 数据条 ---------------- */
#landingPage .landing-stats {
    position: relative;
    z-index: 1;
    grid-template-columns: repeat(3, 1fr);
    max-width: 900px;
    margin: 48px auto 0;
    padding: 6px;
    border: 1px solid #e8eefb;
    border-bottom: 0;
    border-radius: 22px 22px 0 0;
    background: linear-gradient(180deg, #fff 0%, #fff 70%, #fdfefe 100%);
    box-shadow:
        0 -12px 42px -30px rgba(11, 31, 75, .55),
        0 22px 50px -40px rgba(11, 31, 75, .8);
    overflow: hidden;
}

#landingPage .landing-stats::before {
    content: '';
    position: absolute;
    inset: 0 0 auto;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #6366f1, #f97316);
    opacity: .85;
}

#landingPage .landing-stats > div {
    padding: 28px 14px;
    border-right: 1px solid #eef2f9;
}

#landingPage .landing-stats b {
    color: var(--lp-ink);
    font-size: clamp(24px, 2.6vw, 32px);
    letter-spacing: -.8px;
}

#landingPage .landing-stats span {
    margin-top: 8px;
    color: #77839a;
    font-size: 12.5px;
    letter-spacing: .02em;
}

/* ---------------- 内容板块 ---------------- */
#landingPage .landing-section {
    padding: 92px 24px 0;
}

#landingPage .landing-section-head {
    max-width: 680px;
    margin: 0 auto 42px;
}

#landingPage .landing-eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    padding: 6px 14px;
    border-radius: 999px;
    background: #eff4ff;
    color: #1d4ed8;
    font-size: 11.5px;
    letter-spacing: .16em;
}

#landingPage .landing-section-head h2 {
    color: var(--lp-ink);
    font-size: clamp(23px, 2.7vw, 32px);
    letter-spacing: -.8px;
    line-height: 1.35;
}

#landingPage .landing-section-head p {
    margin-top: 14px;
    color: var(--lp-muted);
    font-size: 14.5px;
}

#landingPage .landing-grid {
    gap: 18px;
}

#landingPage .landing-card {
    padding: 30px 26px;
    border-color: #e9eef8;
    border-radius: 18px;
    box-shadow: 0 1px 0 rgba(15, 35, 80, .02);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

#landingPage .landing-card:hover {
    border-color: #c9dbff;
    transform: translateY(-6px);
    box-shadow: 0 28px 46px -32px rgba(11, 31, 75, .38);
}

#landingPage .landing-card-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 18px;
    border-radius: 15px;
    background: linear-gradient(140deg, #e8f0ff, #f7faff);
    color: #1d4ed8;
    font-size: 20px;
    box-shadow: inset 0 0 0 1px rgba(37, 99, 235, .1);
}

#landingPage .landing-card b {
    font-size: 16px;
    letter-spacing: -.2px;
}

#landingPage .landing-card p {
    margin-top: 10px;
    font-size: 13.5px;
}

/* ---------------- 流程步骤 ---------------- */
#landingPage .landing-steps {
    gap: 18px;
}

#landingPage .landing-steps > div {
    padding: 28px 24px;
    border-color: #e9eef8;
    border-radius: 18px;
    background: linear-gradient(180deg, #fff, #fbfdff);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

#landingPage .landing-steps > div:hover {
    border-color: #c9dbff;
    transform: translateY(-5px);
    box-shadow: 0 26px 44px -32px rgba(11, 31, 75, .36);
}

#landingPage .landing-steps > div:not(:last-child)::after {
    top: 47px;
    right: -18px;
    width: 18px;
    height: 1px;
    background: repeating-linear-gradient(90deg, #c7d7f2 0 5px, transparent 5px 9px);
}

#landingPage .landing-steps span {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    background: linear-gradient(140deg, #3b82f6, #1d4ed8);
    box-shadow: 0 12px 22px -12px rgba(29, 78, 216, .9);
    font-size: 13.5px;
}

#landingPage .landing-steps b {
    margin-top: 16px;
    font-size: 16px;
    letter-spacing: -.2px;
}

#landingPage .landing-steps small {
    margin-top: 9px;
    font-size: 13px;
}

/* ---------------- 行动区（深色渐变） ---------------- */
#landingPage .landing-cta {
    position: relative;
    margin-top: 92px;
    padding: 46px 48px;
    border: 0;
    border-radius: 24px;
    background:
        radial-gradient(560px 220px at 88% -20%, rgba(59, 130, 246, .55), transparent 70%),
        radial-gradient(420px 240px at 6% 120%, rgba(249, 115, 22, .28), transparent 70%),
        linear-gradient(135deg, #08152f 0%, #10265c 55%, #16378f 100%);
    box-shadow: 0 34px 60px -34px rgba(8, 21, 47, .6);
    overflow: hidden;
}

#landingPage .landing-cta > div:first-child b {
    display: block;
    color: #fff;
    font-size: clamp(19px, 2.2vw, 25px);
    letter-spacing: -.5px;
}

#landingPage .landing-cta > div:first-child span {
    margin-top: 10px;
    color: rgba(226, 234, 250, .8);
    font-size: 13.5px;
}

#landingPage .landing-cta .landing-btn-outline {
    background: rgba(255, 255, 255, .1);
    border-color: rgba(255, 255, 255, .3);
    color: #fff;
}

#landingPage .landing-cta .landing-btn-outline:hover {
    background: rgba(255, 255, 255, .18);
    border-color: #fff;
    color: #fff;
}

/* ---------------- 联系我们 ---------------- */
#landingPage .landing-contact {
    margin-top: 92px;
    padding: 76px 24px 84px;
    background:
        radial-gradient(680px 320px at 12% 0%, rgba(37, 99, 235, .28), transparent 68%),
        radial-gradient(520px 300px at 92% 100%, rgba(249, 115, 22, .16), transparent 70%),
        #070e1d;
}

#landingPage .landing-contact .landing-eyebrow {
    background: rgba(255, 255, 255, .08);
    color: #bcd2ff;
}

#landingPage .landing-contact h2 {
    font-size: clamp(23px, 2.7vw, 30px);
    letter-spacing: -.6px;
}

#landingPage .landing-contact p {
    color: #93a3bb;
    font-size: 14px;
}

#landingPage .landing-contact-icon {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    border-radius: 13px;
    background: linear-gradient(140deg, #3b82f6, #1d4ed8);
    box-shadow: 0 12px 24px -14px rgba(37, 99, 235, .9);
    font-size: 16px;
}

#landingPage .landing-contact-list li {
    gap: 16px;
}

#landingPage .landing-contact-list small {
    color: #8494ad;
    font-size: 12px;
    letter-spacing: .04em;
}

#landingPage .landing-contact-list b {
    margin-top: 4px;
    font-size: 15.5px;
}

#landingPage .landing-qr-card {
    width: 272px;
    padding: 18px;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 26px 50px -26px rgba(3, 10, 25, .85);
}

#landingPage .landing-qr-fallback {
    border-radius: 18px;
    border-color: rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .05);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

#landingPage .landing-qr-fallback-icon {
    border-radius: 15px;
    box-shadow: 0 14px 26px -14px rgba(37, 99, 235, .9);
}

/* ---------------- 页脚 ---------------- */
#landingPage .landing-footer {
    padding: 32px max(24px, calc((100vw - 1200px) / 2));
    background: #050a14;
    border-top: 1px solid rgba(255, 255, 255, .05);
}

#landingPage .landing-footer .landing-brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    box-shadow: none;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
    #landingPage .landing-hero { padding: 72px 20px 0; }
    #landingPage .landing-grid,
    #landingPage .landing-steps { grid-template-columns: 1fr 1fr; }
    #landingPage .landing-cta {
        margin: 76px 20px 0;
        padding: 34px 30px;
        flex-direction: column;
        align-items: flex-start;
        gap: 22px;
    }
    #landingPage .landing-contact-inner { gap: 36px; }
}

@media (max-width: 600px) {
    #landingPage .landing-nav { height: 60px; }
    #landingPage .landing-hero { padding: 60px 16px 0; }
    #landingPage .landing-hero h1 { letter-spacing: -.8px; }
    #landingPage .landing-subtitle { font-size: 14px; }
    #landingPage .landing-actions { margin-top: 26px; }
    #landingPage .landing-stats { margin-top: 34px; padding: 0; grid-template-columns: 1fr; }
    #landingPage .landing-stats > div { padding: 18px 12px; border-right: 0; border-bottom: 1px solid #eef2f9; }
    #landingPage .landing-stats > div:last-child { border-bottom: 0; }
    #landingPage .landing-section { padding: 64px 16px 0; }
    #landingPage .landing-grid,
    #landingPage .landing-steps { grid-template-columns: 1fr; }
    #landingPage .landing-card,
    #landingPage .landing-steps > div { padding: 24px 20px; }
    #landingPage .landing-cta {
        margin: 64px 16px 0;
        padding: 28px 22px;
        border-radius: 20px;
    }
    #landingPage .landing-contact { margin-top: 64px; padding: 56px 16px 64px; }
    #landingPage .landing-qr-card { width: 100%; }
    #landingPage .landing-nav.is-open .landing-nav-links {
        top: 60px;
        background: rgba(255, 255, 255, .97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: 0 16px 30px -20px rgba(11, 31, 75, .4);
    }
}

@media (prefers-reduced-motion: reduce) {
    #landingPage .landing-badge i { animation: none; }
    #landingPage .landing-card,
    #landingPage .landing-steps > div,
    #landingPage .landing-btn,
    #landingPage .landing-platforms b { transition: none; }
    #landingPage .landing-card:hover,
    #landingPage .landing-steps > div:hover,
    #landingPage .landing-btn:hover,
    #landingPage .landing-platforms b:hover { transform: none; }
}