/* ============================================================
   6250旅拍 前台共享样式（首页 / 分类页 / 作品页通用）
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --ink: #1c1917;
    --ink-soft: #57534e;
    --ink-muted: #a8a29e;
    --paper: #f8f6f2;
    --line: #e9e4dc;
    --gold: #c49a5c;
    --gold-deep: #a87f43;
    --gold-soft: rgba(196, 154, 92, 0.12);
    --dark: #14110d;
    --radius: 18px;
    --shadow-card: 0 8px 30px -12px rgba(28, 25, 23, 0.18);
    --shadow-lift: 0 24px 50px -18px rgba(28, 25, 23, 0.35);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
                 "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 28px; }

.serif { font-family: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif; }

/* ============ 顶部导航 ============ */
.nav-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), padding 0.4s var(--ease);
    padding: 22px 0;
}
.nav-bar.scrolled,
.nav-bar.solid {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 1px 0 var(--line);
    padding: 12px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand {
    display: flex; align-items: center; gap: 12px;
    color: #fff; font-weight: 700; font-size: 1.18rem;
    letter-spacing: 0.04em; transition: color 0.4s var(--ease); white-space: nowrap;
}
.nav-bar.scrolled .brand, .nav-bar.solid .brand { color: var(--ink); }
.brand-mark {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, #e8c892, var(--gold-deep));
    display: grid; place-items: center;
    color: #fff; font-size: 0.95rem; font-weight: 800; flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(196, 154, 92, 0.45);
}
.brand small { display: block; font-size: 0.66rem; font-weight: 400; letter-spacing: 0.28em; opacity: 0.75; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.95rem; padding: 9px 18px; border-radius: 999px;
    transition: color 0.3s, background 0.3s;
}
.nav-bar.scrolled .nav-links a, .nav-bar.solid .nav-links a { color: var(--ink-soft); }
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.14); }
.nav-bar.scrolled .nav-links a:hover, .nav-bar.solid .nav-links a:hover { color: var(--ink); background: var(--gold-soft); }
.nav-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: linear-gradient(135deg, #e0b777, var(--gold-deep));
    color: #fff !important; padding: 10px 22px !important; font-weight: 600;
    box-shadow: 0 6px 18px rgba(168, 127, 67, 0.4);
}
.nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    width: 42px; height: 42px; position: relative;
}
.nav-toggle span {
    display: block; width: 22px; height: 2px; background: #fff;
    margin: 5px auto; border-radius: 2px; transition: background 0.3s, transform 0.3s;
}
.nav-bar.scrolled .nav-toggle span, .nav-bar.solid .nav-toggle span { background: var(--ink); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 通用按钮 ============ */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 30px; border-radius: 999px;
    font-size: 0.98rem; font-weight: 600; letter-spacing: 0.05em;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s;
    cursor: pointer; border: none;
}
.btn-gold {
    background: linear-gradient(135deg, #e0b777, var(--gold-deep));
    color: #fff; box-shadow: 0 12px 30px rgba(168, 127, 67, 0.4);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(168, 127, 67, 0.55); }
.btn-ghost {
    background: rgba(255, 255, 255, 0.1); color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.4); backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.2); transform: translateY(-2px); }
.btn-dark {
    background: var(--dark); color: #fff;
}
.btn-dark:hover { transform: translateY(-2px); background: #2a231b; box-shadow: var(--shadow-card); }

/* ============ 内页头图 ============ */
.page-hero {
    position: relative;
    padding: 168px 0 72px;
    color: #fff;
    background: var(--dark);
    overflow: hidden;
}
.page-hero-bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    transform: scale(1.04);
}
.page-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(20,17,13,0.72) 0%, rgba(20,17,13,0.55) 45%, rgba(248,246,242,0.98) 100%);
}
.page-hero-inner { position: relative; z-index: 2; }
.crumb {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.85rem; color: rgba(255,255,255,0.75);
    margin-bottom: 20px;
}
.crumb a { color: rgba(255,255,255,0.75); transition: color 0.3s; }
.crumb a:hover { color: #eccb97; }
.crumb .sep { opacity: 0.5; }
.page-eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 0.78rem; letter-spacing: 0.34em; color: #ecd9b8; margin-bottom: 16px;
}
.page-eyebrow::before { content: ""; width: 30px; height: 1px; background: var(--gold); }
.page-title {
    font-size: clamp(2.1rem, 4.6vw, 3.4rem);
    font-weight: 600; letter-spacing: 0.08em; line-height: 1.2; margin-bottom: 14px;
}
.page-desc {
    font-size: 1.05rem; color: rgba(255,255,255,0.82); max-width: 620px; margin-bottom: 26px;
}
.page-meta {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(20,17,13,0.45); border: 1px solid rgba(255,255,255,0.18);
    backdrop-filter: blur(10px);
    padding: 9px 20px; border-radius: 999px;
    font-size: 0.9rem; color: #f3e6cf;
}
.page-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--gold); }

/* ============ 区块标题 ============ */
.section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 52px; }
.section-label {
    display: inline-block; font-size: 0.78rem; letter-spacing: 0.36em;
    color: var(--gold-deep); font-weight: 600; margin-bottom: 14px;
}
.section-title {
    font-size: clamp(1.8rem, 3.2vw, 2.5rem);
    font-weight: 600; letter-spacing: 0.08em; color: var(--ink); margin-bottom: 12px;
}
.section-desc { color: var(--ink-muted); font-size: 1rem; letter-spacing: 0.05em; }
.section-head .line {
    width: 52px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    margin: 18px auto 0;
}

/* ============ 空状态 ============ */
.empty-state {
    text-align: center; padding: 90px 20px; color: var(--ink-muted);
}
.empty-state .emoji { font-size: 3rem; margin-bottom: 16px; opacity: 0.7; }

/* ============ 页脚 ============ */
.site-footer {
    background: var(--dark); color: rgba(255,255,255,0.55);
    padding: 34px 0; border-top: 1px solid rgba(255,255,255,0.07);
}
.footer-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; flex-wrap: wrap; font-size: 0.86rem;
}
.footer-inner a { color: rgba(255,255,255,0.55); transition: color 0.3s; }
.footer-inner a:hover { color: #eccb97; }
.footer-brand { color: rgba(255,255,255,0.85); font-weight: 600; letter-spacing: 0.08em; }

/* ============ 滚动出现 ============ */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.85s var(--ease), transform 0.85s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 760px) {
    .container { padding: 0 18px; }
    .section { padding: 56px 0; }
    .page-hero { padding: 130px 0 56px; }
    .nav-links {
        position: fixed; top: 0; right: 0;
        width: min(78vw, 320px); height: 100vh;
        background: rgba(20, 17, 13, 0.97); backdrop-filter: blur(18px);
        flex-direction: column; align-items: flex-start; justify-content: center;
        gap: 8px; padding: 0 34px;
        transform: translateX(100%); transition: transform 0.4s var(--ease);
    }
    .nav-bar.menu-open .nav-links { transform: translateX(0); }
    .nav-bar.menu-open .nav-links a { color: rgba(255,255,255,0.9); font-size: 1.15rem; }
    .nav-bar.menu-open .nav-toggle span { background: #fff; }
    .nav-toggle { display: block; z-index: 101; }
    .nav-cta { display: none; }
}