/* ===== 尚艺美业集团 - 公共样式 (Navbar + Mobile Menu) ===== */

:root {
  --gold: #C9A84C;
  --gold-light: #F0D080;
  --gold-dark: #A8882E;
  --dark: #2C2C2C;
  --darker: #f8f6f1;
  --text-light: #2C2C2C;
  --text-muted: #6B6B6B;
  --accent: #C9A84C;
  --surface: #ffffff;
  --surface2: #f0ede5;
  --bg-alt: #faf8f4;
  --border-light: rgba(201,168,76,0.15);
  --border-hover: rgba(201,168,76,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-gold: 0 4px 20px rgba(201,168,76,0.2);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #ffffff;
  color: var(--text-light);
  overflow-x: hidden;
}

/* ===== NAVBAR ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  width: 100%; height: 80px;
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,0);
  transition: background 0.3s, border-color 0.3s;
}
nav.scrolled {
  background: #fff;
  border-bottom: 1px solid #d7bb4d;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.nav-con {
  position: relative;
  width: 76.39%; max-width: 1100px;
  margin: auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}

.nav-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; flex-shrink: 0;
}
.nav-logo-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, #facd3b, #f7e28d);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: #fff;
  letter-spacing: -1px;
  box-shadow: 0 2px 10px rgba(250,205,59,0.35);
}
.nav-logo-text { color: #262524; font-size: 22px; font-weight: 700; letter-spacing: 3px; }
.nav-logo-sub { color: #888; font-size: 11px; letter-spacing: 2px; }

.nav-menu {
  display: flex; align-items: center; list-style: none; gap: 0;
}
.nav-menu > li {
  position: relative;
  display: inline-block;
  line-height: 80px;
  padding: 0 22px;
}
.nav-menu > li > a {
  display: block;
  color: #262524; font-size: 15px;
  text-decoration: none; letter-spacing: 1px;
  transition: color 0.3s ease;
  white-space: nowrap;
}
.nav-menu > li > a:hover,
.nav-menu > li.active > a {
  color: #d7bb4d;
}
.nav-menu > li.has-sub > a::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  margin-left: 6px;
  vertical-align: middle;
  transition: transform 0.3s;
}
.nav-menu > li.has-sub:hover > a::after {
  transform: rotate(180deg);
}

/* Dropdown background bar */
.sub-nav-bg {
  position: fixed; left: 0; top: 80px; z-index: 999;
  background: #d7bb4d;
  width: 100%; height: 0;
  transition: height 0.4s ease;
}
.sub-nav-bg.show { height: 60px; }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  left: 0; top: 80px;
  z-index: 1001;
  width: 600px;
  text-align: left;
  height: 0; overflow: hidden;
  opacity: 0;
  transition: height 0.35s ease, opacity 0.35s ease;
}
.nav-menu > li:nth-of-type(n+4) .nav-dropdown {
  left: auto; right: 0; text-align: right;
}
.nav-menu > li:hover .nav-dropdown {
  height: 60px; opacity: 1;
}
.nav-dropdown a {
  display: inline-block;
  line-height: 60px;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  margin-right: 36px;
  transition: opacity 0.3s;
}
.nav-menu > li:nth-of-type(n+4) .nav-dropdown a {
  margin-right: 0; margin-left: 36px;
}
.nav-dropdown a:last-child { margin-right: 0; margin-left: 0; }
.nav-dropdown a:hover { opacity: 0.7; }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
}
.nav-hamburger span {
  width: 24px; height: 2px; background: #262524; border-radius: 2px; transition: all 0.3s;
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(255,255,255,0.98); flex-direction: column;
  align-items: center; padding-top: 80px; gap: 0;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu dl {
  width: 100%; text-align: center; border-bottom: 1px solid #f0f0f0;
}
.mobile-menu dt a {
  display: block; padding: 16px 20px;
  color: #262524; text-decoration: none; font-size: 16px;
  letter-spacing: 2px; font-weight: 600;
  transition: color 0.3s;
}
.mobile-menu dt a:hover { color: #d7bb4d; }
.mobile-menu dd { display: none; background: #fdf8eb; }
.mobile-menu dd.open { display: block; }
.mobile-menu dd a {
  display: block; padding: 12px 20px;
  color: #666; text-decoration: none; font-size: 14px;
  letter-spacing: 1px; transition: color 0.3s;
}
.mobile-menu dd a:hover { color: #d7bb4d; }
.mobile-close {
  position: absolute; top: 24px; right: 24px;
  font-size: 28px; color: #666; cursor: pointer;
  background: none; border: none;
}
/* ===== PAGE HERO ===== */
.page-hero{padding:140px 5% 60px;background:linear-gradient(160deg,#fdfcfa 0%,#f5f0e5 50%,#ebe4d0 100%);text-align:center;position:relative;overflow:hidden;}
.page-hero::before{content:'NEWS';position:absolute;font-size:200px;font-weight:700;color:rgba(201,168,76,0.04);top:50%;left:50%;transform:translate(-50%,-50%);letter-spacing:20px;pointer-events:none;white-space:nowrap;}
.page-hero-tag{display:inline-block;color:var(--gold);font-size:12px;letter-spacing:4px;border-bottom:1px solid var(--gold);padding-bottom:6px;margin-bottom:20px;}
.page-hero-title{font-size:clamp(32px,5vw,56px);font-weight:700;color:var(--text-light);letter-spacing:4px;margin-bottom:16px;}
.page-hero-title span{color:var(--gold);}
.page-hero-desc{color:var(--text-muted);font-size:15px;line-height:1.8;max-width:560px;margin:0 auto;}
.gold-divider{width:60px;height:2px;background:linear-gradient(to right,transparent,var(--gold),transparent);margin:20px auto 0;}s
/* ===== PAGE BANNER ===== */

.page-banner{height:300px;background:linear-gradient(160deg,#fdfcfa 0%,#f5f0e5 40%,#e8dcc8 100%);display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;position:relative;overflow:hidden;margin-top:80px;}
.page-banner::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,rgba(201,168,76,0.12) 0%,transparent 70%);}
.page-banner-tag{font-size:12px;color:var(--gold);letter-spacing:4px;margin-bottom:12px;}
.page-banner-title{font-size:clamp(28px,5vw,52px);font-weight:700;color:var(--text-light);letter-spacing:4px;}
.page-banner-title span{color:var(--gold);}
.breadcrumb{margin-top:16px;font-size:13px;color:var(--text-muted);}
.breadcrumb a{color:var(--text-muted);text-decoration:none;transition:color 0.3s;}
.breadcrumb a:hover{color:var(--gold);}
/* ===== PAGE HERO ===== */
.page-hero{padding:140px 5% 60px;background:linear-gradient(160deg,#fdfcfa 0%,#f5f0e5 50%,#ebe4d0 100%);text-align:center;position:relative;overflow:hidden;}
.page-hero::before{content:'NEWS';position:absolute;font-size:200px;font-weight:700;color:rgba(201,168,76,0.04);top:50%;left:50%;transform:translate(-50%,-50%);letter-spacing:20px;pointer-events:none;white-space:nowrap;}
.page-hero-tag{display:inline-block;color:var(--gold);font-size:12px;letter-spacing:4px;border-bottom:1px solid var(--gold);padding-bottom:6px;margin-bottom:20px;}
.page-hero-title{font-size:clamp(32px,5vw,56px);font-weight:700;color:var(--text-light);letter-spacing:4px;margin-bottom:16px;}
.page-hero-title span{color:var(--gold);}
.page-hero-desc{color:var(--text-muted);font-size:15px;line-height:1.8;max-width:560px;margin:0 auto;}
.gold-divider{width:60px;height:2px;background:linear-gradient(to right,transparent,var(--gold),transparent);margin:20px auto 0;}
/* ===== PAGE MAIN ===== */
.page-main{max-width:1100px;margin:0 auto;padding:10px 5%;}
.section-tag{display:inline-block;color:var(--gold);font-size:12px;letter-spacing:4px;margin-bottom:16px;border-bottom:1px solid var(--gold);padding-bottom:6px;}
.section-title{font-size:clamp(24px,3vw,40px);font-weight:700;color:var(--text-light);letter-spacing:2px;margin-bottom:16px;}
.section-title span{color:var(--gold);}
.gold-divider{width:60px;height:2px;background:linear-gradient(to right,transparent,var(--gold),transparent);margin:20px 0;}

/* ===== FOOTER ===== */
footer{background:#2C2C2C;border-top:1px solid rgba(201,168,76,0.2);padding:60px 5% 30px;text-align:center;}
.footer-logo{font-size:32px;font-weight:700;letter-spacing:4px;color:var(--gold);margin-bottom:16px;}
.footer-tagline{font-size:13px;color:rgba(255,255,255,0.5);letter-spacing:2px;margin-bottom:40px;}
.footer-links{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;margin-bottom:40px;}
.footer-links a{color:rgba(255,255,255,0.5);text-decoration:none;font-size:13px;transition:color 0.3s;}
.footer-links a:hover{color:var(--gold-light);}
.footer-divider{width:100%;height:1px;background:rgba(255,255,255,0.08);margin:30px 0;}
.footer-bottom{font-size:12px;color:rgba(255,255,255,0.25);letter-spacing:1px;}

/* ===== PROGRESS BAR & BACK-TOP ===== */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(to right,var(--gold),var(--gold-light));z-index:9999;transition:width 0.1s;box-shadow:0 0 8px var(--gold);}
.back-top{position:fixed;bottom:40px;right:40px;z-index:500;width:44px;height:44px;border-radius:50%;background:var(--gold);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;opacity:0;transform:translateY(20px);transition:all 0.3s;box-shadow:0 4px 16px rgba(201,168,76,0.3);}
.back-top.show{opacity:1;transform:translateY(0);}
.back-top:hover{transform:translateY(-4px);}

/* ===== REVEAL ANIMATION ===== */
.reveal{opacity:0;transform:translateY(40px);transition:all 0.7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(20px);background:#333;color:#fff;padding:14px 28px;border-radius:12px;font-size:14px;opacity:0;transition:all 0.3s;z-index:9999;pointer-events:none;white-space:nowrap;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===== FORM ===== */
.form-group{margin-bottom:20px;}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-light);margin-bottom:8px;letter-spacing:1px;}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border-light);border-radius:12px;font-size:14px;color:var(--text-light);background:var(--surface);transition:border-color 0.3s;font-family:inherit;outline:none;}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--gold);}
.form-group textarea{resize:vertical;min-height:100px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px;}
.form-submit{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#fff;padding:14px 36px;border-radius:40px;font-size:15px;font-weight:600;letter-spacing:2px;border:none;cursor:pointer;transition:all 0.3s;display:inline-block;box-shadow:0 4px 20px rgba(201,168,76,0.2);}
.form-submit:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(201,168,76,0.35);}

/* ===== RESPONSIVE (Navbar) ===== */
@media(max-width:900px){
  .nav-menu{display:none;}
  .nav-hamburger{display:flex;}
  nav{padding:0 20px;}
  .nav-con{width:100%;max-width:100%;padding:0 20px;}
  .sub-nav-bg{display:none!important;}
  .page-main{padding:60px 20px;}
}