/* 星屿支付 · 公共视觉系统 */
:root {
    --bg-color: #f4efe4;
    --bg-deep: #e9dfcd;
    --surface-color: #fffdf7;
    --surface-soft: #faf5ea;
    --text-color: #172722;
    --text-soft: #31453d;
    --text-muted: #6d7c74;
    --primary-color: #0f6b5d;
    --primary-hover: #0a5349;
    --secondary-color: #b8862f;
    --accent-color: #bc5c49;
    --border-color: #ddd2bf;
    --border-strong: #c9bba2;
    --success-color: #27785c;
    --danger-color: #b74a3d;
    --warning-color: #a8761c;
    --glass-bg: #fffdf7;
    --glass-border: 1px solid var(--border-color);
    --glass-shadow: 0 20px 55px rgba(55, 43, 24, 0.08);
    --glass-highlight: #f3ead9;
    --radius-lg: 22px;
    --radius-md: 15px;
    --radius-sm: 10px;
    --shadow-soft: 0 12px 35px rgba(55, 43, 24, 0.07);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 8% 4%, rgba(184, 134, 47, 0.12), transparent 28%),
        radial-gradient(circle at 94% 12%, rgba(15, 107, 93, 0.09), transparent 30%),
        linear-gradient(180deg, rgba(255, 253, 247, 0.35), rgba(244, 239, 228, 0));
    color: var(--text-color);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.28;
    background-image:
        repeating-linear-gradient(0deg, rgba(80, 61, 32, 0.025) 0, rgba(80, 61, 32, 0.025) 1px, transparent 1px, transparent 4px);
    z-index: -1;
}

a { color: inherit; }
img { max-width: 100%; }

.container {
    width: min(1180px, calc(100% - 48px));
    margin: 0 auto;
}

.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 0;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-color);
}

.brand-lockup img {
    width: 42px;
    height: 42px;
    display: block;
}

.brand-name {
    font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", "Songti SC", serif;
    font-size: 1.28rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1.15;
}

.brand-en {
    display: block;
    font-family: "Plus Jakarta Sans", system-ui, sans-serif;
    font-size: 0.62rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 3px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.nav-links a {
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--primary-color); }

.surface,
.glass,
.card {
    background: var(--surface-color);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.glass:hover {
    border-color: var(--border-strong);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 11px 22px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
    background: var(--primary-color);
    color: #fffdf7;
    box-shadow: 0 8px 18px rgba(15, 107, 93, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 12px 24px rgba(15, 107, 93, 0.24);
}

.btn-secondary {
    background: rgba(255, 253, 247, 0.72);
    border-color: var(--border-strong);
    color: var(--text-soft);
}

.btn-secondary:hover,
.btn-ghost:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: #fffdf7;
}

.btn-ghost {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-muted);
}

.btn-danger {
    background: var(--danger-color);
    color: #fff;
}

.btn-danger:hover { background: #9f3c32; }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    width: 22px;
    height: 1px;
    background: var(--secondary-color);
}

.display-title,
.page-title {
    font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", "Songti SC", serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.18;
    color: var(--text-color);
}

.display-title { font-size: clamp(2.8rem, 6vw, 5rem); }
.page-title { font-size: clamp(2rem, 4vw, 2.8rem); }

.text-gradient {
    color: var(--primary-color);
    -webkit-text-fill-color: currentColor;
    background: none;
}

.text-accent-gradient {
    color: var(--secondary-color);
    -webkit-text-fill-color: currentColor;
    background: none;
}

.muted { color: var(--text-muted); }

.footer,
.site-footer {
    margin-top: 64px;
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer { text-align: center; }

.site-footer {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.footer-brand strong {
    display: block;
    color: var(--text-color);
    font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", serif;
    font-size: 1.08rem;
    letter-spacing: 0.08em;
    margin-bottom: 2px;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
}

.footer-links a:hover { color: var(--primary-color); }

.footer-meta { text-align: right; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.animate-float { animation: float 6s ease-in-out infinite; }

@media (max-width: 720px) {
    .container { width: min(100% - 28px, 1180px); }
    .site-header { padding: 18px 0; flex-wrap: wrap; }
    .nav-links { width: 100%; justify-content: space-between; gap: 12px; font-size: 0.86rem; }
    .brand-name { font-size: 1.12rem; }
    .site-footer { flex-direction: column; }
    .footer-meta { text-align: left; }
}