* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --red: #e8382b;
    --red-dark: #c62828;
    --red-light: #ff5b4d;
    --orange: #ff7043;
    --gold: #ffb300;
    --ink: #222;
    --gray: #666;
    --bg: #fff6f4;
    --shadow: 0 10px 30px rgba(232, 56, 43, 0.15);
}
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; }

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}
.nav-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 40px; height: 40px; border-radius: 10px; }
.brand-name { font-size: 20px; font-weight: 800; color: var(--red); }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a {
    font-size: 15px;
    color: var(--gray);
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}
.nav-links a:hover { color: var(--red); }
.nav-links a::after {
    content: "";
    position: absolute;
    left: 0; bottom: -6px;
    width: 0; height: 2px;
    background: var(--red);
    transition: width 0.25s;
}
.nav-links a:hover::after { width: 100%; }
.btn-register-nav {
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: #fff;
    padding: 9px 22px;
    border-radius: 22px;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 6px 16px rgba(232, 56, 43, 0.35);
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-register-nav:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(232, 56, 43, 0.45); }

.clock-bar {
    background: linear-gradient(90deg, var(--red-dark), var(--red), var(--orange));
    color: #fff;
}
.clock-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    font-size: 14px;
    letter-spacing: 0.5px;
}
.clock-label { opacity: 0.9; }
.clock-value {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    background: rgba(255, 255, 255, 0.18);
    padding: 3px 12px;
    border-radius: 12px;
}

.hero {
    position: relative;
    text-align: center;
    padding: 80px 20px 90px;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 91, 77, 0.25), transparent 45%),
        radial-gradient(circle at 80% 30%, rgba(255, 179, 0, 0.22), transparent 45%),
        linear-gradient(160deg, #fff, #fff1ee);
    z-index: -1;
}
.hero-content { max-width: 780px; margin: 0 auto; }
.hero-logo-wrap { position: relative; display: inline-block; margin-bottom: 24px; }
.hero-logo {
    width: 120px; height: 120px;
    border-radius: 28px;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 2;
    animation: float 4s ease-in-out infinite;
}
.hero-logo-glow {
    position: absolute;
    inset: -12px;
    border-radius: 40px;
    background: radial-gradient(circle, rgba(232, 56, 43, 0.4), transparent 70%);
    filter: blur(14px);
    z-index: 1;
    animation: pulse 3s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes pulse { 0%,100% { opacity: 0.5; transform: scale(1); } 50% { opacity: 0.9; transform: scale(1.08); } }
.hero-title {
    font-size: 52px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--red), var(--orange));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
}
.hero-subtitle { font-size: 22px; font-weight: 700; color: var(--ink); margin-top: 10px; }
.hero-desc { font-size: 16px; color: var(--gray); margin-top: 14px; }
.hero-desc b { color: var(--red); }
.hero-btns { margin-top: 34px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: #fff;
    padding: 15px 38px;
    border-radius: 30px;
    font-size: 17px;
    font-weight: 700;
    box-shadow: 0 10px 26px rgba(232, 56, 43, 0.4);
    transition: transform 0.25s, box-shadow 0.25s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 16px 34px rgba(232, 56, 43, 0.5); }
.btn-primary.large { padding: 18px 54px; font-size: 19px; }
.btn-icon { font-size: 20px; }
.btn-ghost {
    padding: 15px 34px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    color: var(--red);
    background: #fff;
    border: 2px solid rgba(232, 56, 43, 0.3);
    transition: all 0.25s;
}
.btn-ghost:hover { border-color: var(--red); background: #fff5f3; }
.hero-badges { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.badge {
    background: #fff;
    color: var(--gray);
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

.section { max-width: 1160px; margin: 0 auto; padding: 70px 20px; }
.section-title {
    text-align: center;
    font-size: 34px;
    font-weight: 800;
    color: var(--ink);
}
.section-title::after {
    content: "";
    display: block;
    width: 56px; height: 4px;
    margin: 14px auto 0;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--red), var(--orange));
}
.section-sub { text-align: center; color: var(--gray); margin-top: 12px; font-size: 16px; }

.download-cards {
    margin-top: 46px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.dl-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    box-shadow: 0 8px 26px rgba(0, 0, 0, 0.06);
    transition: transform 0.25s, box-shadow 0.25s;
    border: 1px solid rgba(232, 56, 43, 0.06);
}
.dl-card:hover { transform: translateY(-8px); box-shadow: 0 18px 40px rgba(232, 56, 43, 0.15); }
.dl-icon {
    width: 76px; height: 76px;
    margin: 0 auto 20px;
    border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 40px;
}
.dl-card.ios .dl-icon { background: linear-gradient(135deg, #444, #000); }
.dl-card.android .dl-icon { background: linear-gradient(135deg, #7ed957, #3ddc84); }
.dl-icon svg { width: 42px; height: 42px; }
.dl-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.dl-card p { color: var(--gray); font-size: 15px; min-height: 48px; }
.dl-btn {
    display: inline-block;
    margin-top: 22px;
    padding: 12px 40px;
    border-radius: 26px;
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: #fff;
    font-weight: 700;
    box-shadow: 0 8px 20px rgba(232, 56, 43, 0.3);
    transition: transform 0.2s;
}
.dl-btn:hover { transform: scale(1.05); }

.features-section { background: #fff; border-radius: 30px; margin-top: 20px; margin-bottom: 20px; }
.feature-grid {
    margin-top: 46px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 18px;
    background: linear-gradient(160deg, #fff, #fff5f3);
    transition: transform 0.25s;
}
.feature-item:hover { transform: translateY(-6px); }
.feature-emoji {
    font-size: 44px;
    width: 84px; height: 84px;
    line-height: 84px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 6px 18px rgba(232, 56, 43, 0.12);
}
.feature-item h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.feature-item p { color: var(--gray); font-size: 14px; }

.guide-notice {
    max-width: 780px;
    margin: 36px auto 0;
    background: #fff8e1;
    border-left: 4px solid var(--gold);
    padding: 16px 22px;
    border-radius: 10px;
    color: #7a5a00;
}
.guide-notice b { color: var(--red-dark); }
.guide-steps { max-width: 780px; margin: 30px auto 0; list-style: none; }
.guide-steps li {
    display: flex;
    gap: 20px;
    background: #fff;
    padding: 24px 26px;
    border-radius: 16px;
    margin-bottom: 18px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
    align-items: flex-start;
}
.step-num {
    flex-shrink: 0;
    width: 44px; height: 44px;
    line-height: 44px;
    text-align: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
}
.step-text b { font-size: 17px; display: block; margin-bottom: 4px; }
.step-text p { color: var(--gray); font-size: 15px; }
.guide-warning {
    max-width: 780px;
    margin: 26px auto 0;
    display: flex;
    gap: 16px;
    background: linear-gradient(135deg, #fff0ee, #ffe5e2);
    border: 1px solid rgba(232, 56, 43, 0.25);
    padding: 22px 26px;
    border-radius: 16px;
}
.warn-icon { font-size: 30px; flex-shrink: 0; }
.guide-warning b { color: var(--red-dark); font-size: 16px; }
.guide-warning p { color: #8a3b34; font-size: 14px; margin-top: 4px; }

.faq-list { max-width: 820px; margin: 46px auto 0; }
.faq-item {
    background: #fff;
    border-radius: 14px;
    margin-bottom: 14px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}
.faq-q {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}
.faq-arrow { color: var(--red); font-size: 22px; transition: transform 0.3s; font-weight: 400; }
.faq-item.open .faq-arrow { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
}
.faq-item.open .faq-a { max-height: 240px; padding: 0 24px 20px; }
.faq-a p { color: var(--gray); font-size: 15px; }
.faq-a b { color: var(--red); }

.cta-section {
    text-align: center;
    padding: 70px 20px;
    background: linear-gradient(135deg, var(--red-dark), var(--red), var(--orange));
    color: #fff;
    margin-top: 30px;
}
.cta-section h2 { font-size: 34px; font-weight: 900; }
.cta-section p { font-size: 17px; opacity: 0.92; margin-top: 10px; }
.cta-section .btn-primary {
    margin-top: 28px;
    background: #fff;
    color: var(--red);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}
.cta-section .btn-primary:hover { background: #fff5f3; }

.footer { background: #1e1e1e; color: #bbb; padding: 44px 20px 30px; }
.footer-inner { max-width: 1160px; margin: 0 auto; text-align: center; }
.footer-brand {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 14px;
}
.footer-logo { width: 36px; height: 36px; border-radius: 8px; }
.footer-tip { font-size: 14px; color: #ff8a7d; margin-bottom: 8px; }
.footer-copy { font-size: 13px; color: #888; }

.float-register {
    position: fixed;
    right: 22px; bottom: 30px;
    z-index: 90;
    width: 62px; height: 62px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: #fff;
    font-weight: 800;
    font-size: 16px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 24px rgba(232, 56, 43, 0.5);
    animation: bob 2.4s ease-in-out infinite;
    transition: transform 0.2s;
}
.float-register:hover { transform: scale(1.1); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
    .nav-links { display: none; }
    .hero-title { font-size: 38px; }
    .hero-subtitle { font-size: 18px; }
    .download-cards { grid-template-columns: 1fr; }
    .clock-inner { flex-direction: column; gap: 4px; font-size: 13px; }
    .section-title { font-size: 27px; }
    .cta-section h2 { font-size: 27px; }
}