/* ========== RESET & BASE ========== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:80px; }
:root {
  /* ====== 悦泰药业 配色升级 v2 ====== */
  --bg-warm-white:  #F5F0E6;   /* 米白羊皮纸感背景 */
  --bg-cream:       #FFFCF5;    /* 暖白卡片背景   */
  --gold-primary:   #C9A96E;    /* 主金（棕金）   */
  --gold-light:     #E8D5A3;    /* 浅金装饰线     */
  --gold-dark:      #B8956A;    /* 深金 hover     */
  --red-accent:     #900005;    /* 强调红（按钮/标题）*/
  --red-soft:       #7A1A10;    /* 柔和深红       */
  --text-dark:      #2C1810;    /* 深色正文       */
  --text-mid:       #6B5B4E;    /* 中灰棕文字     */
  --text-light:     #A09080;    /* 浅棕辅助文字   */
  --border-gold:    rgba(201,169,110,0.2);
  --shadow-gold:    0 8px 30px rgba(201,169,110,0.12);
}


body {
  font-family: "Noto Serif SC", "SimSun", "STSong", "PingFang SC", "Microsoft YaHei", serif;
  color:#2C1810; line-height:1.8; background:#F5F0E6; overflow-x:hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }
ul { list-style:none; }
.container { max-width:1200px; margin:0 auto; padding:0 20px; }
.section { padding:90px 0; }
.bg-white { background:#FFFCF5; }
.bg-light { background:#F5F0E6; }
.bg-dark { background:#7A1A10; color:#D4C290; }

/* ========== SECTION TITLE ========== */
.section-title { text-align:center; margin-bottom:55px; }
.section-title h2 {
  font-size:34px; font-weight:700; color:#7A1A10;
  margin-bottom:10px; letter-spacing:6px; position:relative; display:inline-block;
}
.section-title h2::after {
  content:''; display:block; width:50px; height:2px; background:#C9A96E;
  margin:12px auto 0;
}
.section-title p {
  font-size:13px; color:#B8956A; letter-spacing:6px;
  font-family: Arial, sans-serif; text-transform:uppercase; margin-top:5px;
}

/* ========== HEADER ========== */
.header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(60,30,15,0.55); backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid rgba(201,169,110,0.25);
  transition:all 0.35s;
}
.header.scrolled {
  background:rgba(50,25,12,0.75);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  box-shadow:0 3px 30px rgba(0,0,0,0.35);
}
.header-inner {
  max-width:1200px; margin:0 auto; padding:0 20px;
  display:flex; align-items:center; justify-content:space-between; height:75px;
}
.logo { display:flex; align-items:center; gap:12px; }
.logo-icon {
  display:inline-flex; align-items:center; justify-content:center;
  width:48px; height:48px; background:linear-gradient(135deg, #C9A96E, #B8956A);
  color:#7A1A10; font-size:26px; font-weight:900; border-radius:6px;
  font-family: "Noto Serif SC", serif; box-shadow:0 2px 8px rgba(201,169,110,0.25);
}
.logo-text { font-size:24px; font-weight:700; color:#C9A96E; letter-spacing:3px; }
.logo-sub { font-size:15px; font-weight:400; color:#B8956A; margin-left:2px; }

/* NAV */
.main-nav { display:flex; gap:2px; }
.nav-link {
  padding:10px 15px; font-size:14px; color:#E8D5B5; font-weight:500;
  border-radius:4px; transition:all 0.3s; cursor:pointer; white-space:nowrap;
  letter-spacing:1px; position:relative;
}
.nav-link::after {
  content:''; position:absolute; bottom:4px; left:50%; transform:translateX(-50%);
  width:0; height:1.5px; background:#C9A96E; transition:width 0.3s;
}
.nav-link:hover { color:#C9A96E; }
.nav-link:hover::after { width:50%; }
.nav-link.active { color:#C9A96E; }
.nav-link.active::after { width:50%; }

.menu-toggle {
  display:none; flex-direction:column; gap:5px;
  background:none; border:none; cursor:pointer; padding:8px; align-items:center;
}
.menu-toggle span {
  display:block; width:26px; height:2px; background:#C9A96E;
  border-radius:2px; transition:all 0.3s;
}
.menu-toggle .menu-text {
  font-size:11px; color:#C9A96E; letter-spacing:1px; margin-top:3px;
}

/* ========== HERO ========== */
.hero {
  position:relative; height:100vh; min-height:650px;
  display:flex; align-items:center; justify-content:center; text-align:center;
  background: linear-gradient(160deg, #2C1810 0%, #7A1A10 35%, #8B1A15 65%, #1A0D08 100%);
  overflow:hidden;
}
.hero::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(ellipse at 25% 60%, rgba(201,169,110,0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 75% 30%, rgba(255,255,255,0.04) 0%, transparent 50%),
              url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c4a265' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-overlay { position:absolute; inset:0; background:rgba(0,0,0,0.25); }
.hero-content { position:relative; z-index:2; max-width:900px; padding:0 20px; }
.hero-badge {
  display:inline-block; padding:8px 28px; border:1px solid rgba(201,169,110,0.35);
  color:#C9A96E; font-size:15px; letter-spacing:5px; margin-bottom:28px;
  border-radius:2px; background:rgba(0,0,0,0.2); backdrop-filter:blur(5px);
}
.hero-title {
  font-size:clamp(34px, 5.5vw, 60px); font-weight:900; color:#F5F0E6;
  line-height:1.3; margin-bottom:22px; letter-spacing:8px;
}
.hero-break { display:block; color:#C9A96E; margin-top:10px; font-size:0.85em; }
.hero-desc {
  font-size:16px; color:rgba(248,243,237,0.82); margin-bottom:45px;
  line-height:1.9; max-width:680px; margin-left:auto; margin-right:auto;
  text-shadow: 0 1px 6px rgba(0,0,0,0.2);
}
.hero-btns { display:flex; gap:10px; justify-content:center; flex-wrap:nowrap; }
.btn {
  display:inline-block; padding:8px 20px; font-size:13px; font-weight:600;
  border-radius:3px; cursor:pointer; transition:all 0.3s; border:none; letter-spacing:2px;
  font-family:"Noto Serif SC", serif; white-space:nowrap;
}
.btn-primary { background:#C9A96E; color:#7A1A10; }
.btn-primary:hover { background: #900005; transform:translateY(-2px); box-shadow:0 8px 28px rgba(201,169,110,0.35); }
.btn-outline {
  border:1.5px solid rgba(201,169,110,0.6); color:#C9A96E; background:transparent;
}
.btn-outline:hover { background:rgba(201,169,110,0.08); transform:translateY(-2px); }
.hero-scroll { display:none; }
.hero-scroll span {
  display:block; width:30px; height:30px; border-right:2px solid #C9A96E;
  border-bottom:2px solid #C9A96E; transform:rotate(45deg); animation:scrollBounce 2s infinite;
}
@keyframes scrollBounce {
  0%, 100% { opacity:0.4; transform:rotate(45deg) translate(-5px,-5px); }
  50% { opacity:1; transform:rotate(45deg) translate(0,0); }
}

/* ========== HERO CAROUSEL ========== */
.hero-has-slides .hero::before { display:none; }
.hero-slides { position:absolute; inset:0; z-index:0; }
.hero-slide {
  position:absolute; inset:0;
  background-size:cover; background-position:center;
  display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center;
  opacity:0; visibility:hidden; transition:opacity 0.8s ease, visibility 0.8s ease;
}
.hero-slide.active { opacity:1; z-index:1; visibility:visible; }
.hero-slide .hero-content { 
  position:relative; z-index:2; max-width:900px; padding:0 20px;
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center;
}
/* 按钮固定在当前屏底部 */
.hero-slide .hero-btns {
  position:absolute; bottom:10px; left:50%; transform:translateX(-50%); z-index:3;
  width:max-content;
}

/* arrows */
.hero-arrow {
  position:absolute; top:50%; transform:translateY(-50%); z-index:3;
  width:50px; height:50px; border-radius:50%;
  background:rgba(0,0,0,0.3); border:1px solid rgba(201,169,110,0.3);
  color:#C9A96E; font-size:28px; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:all 0.3s; line-height:1; padding:0;
}
.hero-arrow:hover { background:rgba(0,0,0,0.6); border-color:#C9A96E; color:#D4C290; }
.hero-arrow-left { left:20px; }
.hero-arrow-right { right:20px; }

/* dots */
.hero-dots {
  position:absolute; bottom:90px; left:50%; transform:translateX(-50%); z-index:3;
  display:flex; gap:10px;
}
.hero-dot {
  width:10px; height:10px; border-radius:50%;
  background:rgba(201,169,110,0.3); cursor:pointer;
  transition:all 0.3s;
}
.hero-dot.active { background:#C9A96E; width:28px; border-radius:5px; }
.hero-dot:hover { background:rgba(201,169,110,0.8); }

/* header nav highlight */
.hero-link { color:#C9A96E; }

@media (max-width:768px) {
  .hero-arrow { width:36px; height:36px; font-size:20px; }
  .hero-arrow-left { left:8px; }
  .hero-arrow-right { right:8px; }
  .hero-dots { bottom:70px; }
  .hero-slide .hero-btns { bottom:100px; }
}

/* ========== CULTURE SECTION (仁·义·礼·智·信) ========== */
.culture-section {
  padding:100px 0; background:#FFFCF5;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c4a265' fill-opacity='0.04'%3E%3Cpath d='M11 18c3.866 0 7 3.134 7 7s-3.134 7-7 7-7-3.134-7-7 3.134-7 7-7zm48 0c3.866 0 7 3.134 7 7s-3.134 7-7 7-7-3.134-7-7 3.134-7 7-7zm-48 48c3.866 0 7 3.134 7 7s-3.134 7-7 7-7-3.134-7-7 3.134-7 7-7zm48 0c3.866 0 7 3.134 7 7s-3.134 7-7 7-7-3.134-7-7 3.134-7 7-7z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.culture-grid {
  display:grid; grid-template-columns:repeat(5, 1fr); gap:20px;
}
.culture-card {
  text-align:center; padding:40px 15px 35px; border-radius:6px;
  background:#fff; border:1px solid rgba(201,169,110,0.15);
  transition:all 0.4s; cursor:default; position:relative; overflow:hidden;
}
.culture-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, #C9A96E, #B8956A, #C9A96E);
  transform:scaleX(0); transition:transform 0.4s;
}
.culture-card:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(0,0,0,0.08); }
.culture-card:hover::before { transform:scaleX(1); }
.culture-badge {
  display:inline-flex; align-items:center; justify-content:center;
  width:60px; height:60px; border-radius:50%;
  background:linear-gradient(135deg, #7A1A10, #8B1A15);
  color:#C9A96E; font-size:28px; font-weight:900; margin-bottom:18px;
  box-shadow:0 4px 15px rgba(44,24,16,0.2);
}
.culture-herb {
  font-size:13px; color:#B8956A; margin-bottom:12px;
  letter-spacing:2px; font-weight:600;
}
.culture-card h3 { font-size:17px; color:#7A1A10; margin-bottom:12px; letter-spacing:2px; }
.culture-card p { font-size:13px; color:#6B5B4E; line-height:1.8; }

/* ========== ABOUT ========== */
.about-layout {
  display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center;
}
.about-image {
  position:relative;
}
.about-img-placeholder {
  width:100%; aspect-ratio:4/3; background:linear-gradient(135deg, #8B1A15, #7A1A10);
  border-radius:8px; display:flex; align-items:center; justify-content:center;
  position:relative; overflow:hidden; box-shadow:0 10px 40px rgba(0,0,0,0.15);
}
.about-img-placeholder::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(ellipse at center, rgba(201,169,110,0.15) 0%, transparent 70%);
}
.about-img-placeholder span {
  font-size:60px; font-weight:900; color:rgba(201,169,110,0.6);
  letter-spacing:20px; font-family:"Noto Serif SC", serif;
}
.about-text h3 {
  font-size:26px; color:#7A1A10; margin-bottom:20px; letter-spacing:3px;
  padding-bottom:15px; border-bottom:2px solid #C9A96E; display:inline-block;
}
.about-text p {
  font-size:15px; color:#6B5B4E; line-height:2; margin-bottom:18px;
}
.about-stats {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:15px; margin-top:30px;
}
.stat-item {
  text-align:center; padding:18px 10px; background:#F5F0E6; border-radius:6px;
  border:1px solid rgba(201,169,110,0.15);
}
.stat-num { display:block; font-size:30px; font-weight:900; color:#7A1A10; line-height:1.2; }
.stat-unit { font-size:16px; font-weight:400; }
.stat-label { font-size:12px; color:#B8956A; letter-spacing:2px; }

/* ========== QUALIFICATIONS ========== */
.qual-grid {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:25px;
}
.qual-card {
  background:#fff; border:1px solid rgba(201,169,110,0.15);
  border-radius:6px; padding:40px 25px 35px; text-align:center;
  transition:all 0.35s;
}
.qual-card:hover { transform:translateY(-5px); box-shadow:0 10px 35px rgba(0,0,0,0.08); }
.qual-img-box {
  width:80px; height:80px; margin:0 auto 22px; border-radius:50%;
  background:linear-gradient(135deg, #F5F0E6, #D4C290);
  display:flex; align-items:center; justify-content:center;
  border:2px solid rgba(201,169,110,0.25);
}
.qual-icon { font-size:34px; }
.qual-img-box img {
  width:100%; height:100%; object-fit:contain; border-radius:50%;
}
.qual-card h4 { font-size:17px; color:#7A1A10; margin-bottom:10px; letter-spacing:1px; }
.qual-card p { font-size:13px; color:#6B5B4E; line-height:1.7; }

/* ========== PRODUCTS ========== */
.product-grid {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:20px;
}
.product-img-box {
  height:220px; background-size:cover; background-position:center;
  position:relative;
}
.prod-img-1 { background:linear-gradient(135deg, #7A1A10, #8B1A15); }
.prod-img-2 { background:linear-gradient(135deg, #9B3A30, #7A2820); }
.prod-img-3 { background:linear-gradient(135deg, #8B3A32, #7A1A10); }
.prod-img-4 { background:linear-gradient(135deg, #7A2820, #7A1A10); }
.product-img-box::after {
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at center, rgba(201,169,110,0.15) 0%, transparent 70%);
}
.product-info { padding:20px; }
.product-tag {
  display:inline-block; padding:3px 12px; font-size:11px; color:#C9A96E;
  border:1px solid rgba(201,169,110,0.3); border-radius:2px; letter-spacing:1px;
  margin-bottom:10px;
}
.product-info h4 { font-size:16px; color:#2C1810; margin-bottom:8px; letter-spacing:1px; line-height:1.4; }
.product-desc { font-size:13px; color:#6B5B4E; line-height:1.7; margin-bottom:14px; }
.product-meta { display:flex; justify-content:space-between; font-size:12px; color:#B8956A; }
.product-price { font-size:18px; font-weight:700; color:#7A1A10; }

/* ========== NEWS ========== */
.news-list { max-width:860px; margin:0 auto; }
.news-item {
  display:flex; gap:25px; padding:22px 0; border-bottom:1px dashed rgba(201,169,110,0.25);
  align-items:flex-start; transition:all 0.3s; cursor:pointer;
}
.news-item:hover { padding-left:10px; }
.news-item:last-child { border-bottom:none; }
.news-date {
  flex-shrink:0; text-align:center; width:75px;
  background:#F5F0E6; border-radius:6px; padding:10px 5px;
  border:1px solid rgba(201,169,110,0.15);
}
.news-date span { display:block; font-size:26px; font-weight:900; color:#7A1A10; line-height:1.1; }
.news-date small { font-size:11px; color:#B8956A; letter-spacing:1px; }
.news-content h4 {
  font-size:16px; color:#2C1810; margin-bottom:6px; font-weight:600; letter-spacing:1px;
}
.news-content p { font-size:13px; color:#6B5B4E; line-height:1.7; }
.news-more {
  text-align:center; margin-top:35px;
}
.news-more a {
  display:inline-block; padding:10px 30px; border:1px solid #C9A96E; color:#C9A96E;
  border-radius:3px; font-size:14px; letter-spacing:2px; transition:all 0.3s;
}
.news-more a:hover { background:#C9A96E; color:#fff; }

/* ========== JOIN & OEM ========== */
.join-intro { text-align:center; margin-bottom:40px; }
.join-intro p { font-size:16px; color:#6B5B4E; letter-spacing:2px; }
.join-advantages, .oem-advantages {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:25px; margin-bottom:50px;
}
.join-adv-card {
  background:#fff; border:1px solid rgba(201,169,110,0.15);
  border-radius:6px; padding:35px 25px; text-align:center;
  transition:all 0.35s;
}
.join-adv-card:hover { transform:translateY(-4px); box-shadow:0 10px 30px rgba(0,0,0,0.08); }
.join-adv-icon { font-size:38px; margin-bottom:18px; display:block; }
.join-adv-card h4 { font-size:17px; color:#7A1A10; margin-bottom:10px; letter-spacing:1px; }
.join-adv-card p { font-size:13px; color:#6B5B4E; line-height:1.7; }

.join-process { text-align:center; margin-bottom:40px; }
.join-process h3 { font-size:22px; color:#7A1A10; margin-bottom:25px; letter-spacing:3px; }
.process-steps {
  display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:5px;
}
.step { text-align:center; }
.step-num {
  display:block; width:50px; height:50px; line-height:50px; margin:0 auto 8px;
  border-radius:50%; background:#7A1A10; color:#C9A96E; font-size:16px; font-weight:700;
}
.step span { font-size:13px; color:#6B5B4E; letter-spacing:1px; }
.step span:last-child { display:block; }
.step-arrow { color:#C9A96E; font-size:20px; padding:0 5px; }

.join-contact-bar {
  text-align:center; padding:30px; background:linear-gradient(135deg, #7A1A10, #8B1A15);
  border-radius:8px; color:#F5F0E6;
}
.join-contact-bar span { font-size:15px; letter-spacing:3px; display:block; margin-bottom:8px; }
.join-contact-bar strong { font-size:36px; font-weight:900; color:#C9A96E; letter-spacing:4px; }

.oem-service-list { max-width:600px; margin:0 auto 40px; }
.oem-service-list h3 { text-align:center; font-size:20px; color:#7A1A10; margin-bottom:20px; letter-spacing:2px; }
.oem-service-list ul {
  display:grid; grid-template-columns:repeat(2, 1fr); gap:12px;
}
.oem-service-list li {
  padding:12px 20px; background:#fff; border-left:3px solid #C9A96E;
  font-size:14px; color:#7A1A10; border-radius:0 4px 4px 0;
}

/* ========== MAP ========== */
.map-wrapper { max-width:900px; margin:0 auto; }
.map-placeholder {
  text-align:center; padding:80px 20px; background:linear-gradient(135deg, #F5F0E6, #D4C290);
  border-radius:8px; border:2px dashed rgba(201,169,110,0.3);
}
.map-pin { font-size:50px; margin-bottom:15px; }
.map-placeholder h3 { font-size:22px; color:#7A1A10; margin-bottom:8px; letter-spacing:2px; }
.map-placeholder p { font-size:14px; color:#6B5B4E; }
.map-hint { font-size:12px !important; color:#B8956A !important; margin-top:8px; }

/* ========== CONTACT ========== */
.contact-layout {
  display:grid; grid-template-columns:1fr 1.2fr; gap:40px;
}
.contact-info-box, .contact-form-box {
  background:#fff; border:1px solid rgba(201,169,110,0.15);
  border-radius:8px; padding:35px 30px;
}
.contact-info-box h3, .contact-form-box h3 {
  font-size:20px; color:#7A1A10; margin-bottom:25px; letter-spacing:2px;
  padding-bottom:12px; border-bottom:2px solid #C9A96E; display:inline-block;
}
.info-item {
  display:flex; gap:15px; align-items:flex-start; padding:14px 0;
  border-bottom:1px solid rgba(0,0,0,0.05);
}
.info-item:last-child { border-bottom:none; }
.info-icon { font-size:22px; flex-shrink:0; margin-top:2px; }
.info-item strong { display:block; font-size:14px; color:#7A1A10; margin-bottom:2px; }
.info-item p { font-size:13px; color:#6B5B4E; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:15px; margin-bottom:15px; }
.form-group { margin-bottom:15px; }
.form-group input, .form-group textarea {
  width:100%; padding:14px 16px; border:1px solid rgba(201,169,110,0.25);
  border-radius:4px; font-size:14px; color:#2C1810; background:#FFFCF5;
  font-family:"Noto Serif SC", serif; transition:border-color 0.3s; outline:none;
}
.form-group input:focus, .form-group textarea:focus { border-color:#C9A96E; }
.form-group textarea { resize:vertical; min-height:120px; }
.btn-block { width:100%; text-align:center; }

/* ========== FOOTER ========== */
.footer {
  background:#2C1810; color:#D4C290; padding:60px 0 0;
  border-top:3px solid #C9A96E;
}
.footer-grid {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:35px; margin-bottom:40px;
}
.footer-col h4 {
  font-size:17px; color:#C9A96E; margin-bottom:20px; letter-spacing:2px;
  padding-bottom:10px; border-bottom:1px solid rgba(201,169,110,0.15);
}
.footer-col p, .footer-col a {
  font-size:13px; color:#A09080; line-height:2.2; display:block;
}
.footer-col a:hover { color:#C9A96E; }
.footer-qr { text-align:center; }
.qr-row { display:flex; gap:10px; justify-content:center; flex-wrap:nowrap; }
.qr-item { text-align:center; }
.qr-placeholder {
  width:70px; height:70px; margin:0 auto; background:#7A1A10;
  border:1px solid rgba(201,169,110,0.25); display:flex; align-items:center;
  justify-content:center; font-size:11px; color:#C9A96E; border-radius:4px;
  letter-spacing:1px; line-height:1.4;
}
.footer-bottom {
  text-align:center; padding:25px 0; border-top:1px solid rgba(201,169,110,0.08);
}
.footer-bottom p { font-size:12px; color:#6B5B4E; line-height:2; letter-spacing:1px; }

/* ========== BACK TO TOP & CALL WRAPPER ========== */
.back-to-top-wrapper {
  position:fixed; bottom:30px; right:30px; z-index:900;
  display:flex; flex-direction:column; align-items:center; gap:12px;
}
.back-to-top {
  width:44px; height:44px; background:#7A1A10; color:#C9A96E;
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:20px; font-weight:700; opacity:0; visibility:hidden;
  transition:all 0.3s; box-shadow:0 4px 15px rgba(0,0,0,0.2);
  cursor:pointer; border:none; text-decoration:none;
}
.call-button {
  width:44px; height:44px; background:#7A1A10; color:#C9A96E;
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:17px; font-weight:700; opacity:0; visibility:hidden;
  transition:all 0.3s; box-shadow:0 4px 15px rgba(0,0,0,0.2);
  cursor:pointer; border:none; text-decoration:none;
}
.back-to-top.visible, .call-button.visible { opacity:1; visibility:visible; }
.back-to-top:hover, .call-button:hover { background:#C9A96E; color:#7A1A10; transform:translateY(-3px); }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .culture-grid { grid-template-columns:repeat(3, 1fr); }
  .about-layout { grid-template-columns:1fr; }
  .about-stats { grid-template-columns:repeat(4, 1fr); }
  .footer-grid { grid-template-columns:repeat(2, 1fr); }
  .join-advantages, .oem-advantages { grid-template-columns:repeat(2, 1fr); }
  .product-grid { grid-template-columns:repeat(2, 1fr); }
  .qual-grid { grid-template-columns:repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { scroll-padding-top:65px; }
  .header-inner { height:60px; }
  .section { padding:60px 0; }
  .culture-grid { grid-template-columns:repeat(2, 1fr); }
  .qual-grid { grid-template-columns:1fr; }
  .join-advantages, .oem-advantages { grid-template-columns:1fr; }
  .product-grid { grid-template-columns:1fr; }
  .contact-layout { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .about-stats { grid-template-columns:repeat(2, 1fr); }
  .hero-title { font-size:28px; letter-spacing:4px; }
  .hero { height:100vh; min-height:500px; }
  .hero .hero-content { margin-top:-20px; }
  .hero-badge { font-size:12px; padding:6px 18px; margin-bottom:18px; letter-spacing:3px; }
  .hero-desc { font-size:13px; }
  .hero-break { font-size:0.8em; }
  .main-nav {
    display:none; flex-direction:column; position:absolute; top:60px; left:0; right:0;
    background:rgba(40,18,10,0.97); padding:10px 0; border-top:1px solid rgba(201,169,110,0.15);
  }
  .main-nav.open { display:flex; }
  .nav-link { padding:14px 20px; border-bottom:1px solid rgba(201,169,110,0.08); }
  .menu-toggle { display:flex; }
  .menu-toggle span:not(.menu-text) { display:none; }
  .menu-toggle .menu-text { display:inline; width:auto; height:auto; background:none; font-size:14px; margin-top:0; }
  .form-row { grid-template-columns:1fr; }
  .oem-service-list ul { grid-template-columns:1fr; }
  .process-steps { flex-direction:column; gap:10px; }
  .step-arrow { transform:rotate(90deg); }
}

@media (max-width: 480px) {
  .culture-grid { grid-template-columns:1fr; }
  .about-stats { grid-template-columns:repeat(2, 1fr); }
  .hero { height:100vh; min-height:450px; }
  .hero .hero-content { margin-top:-40px; padding:0 16px; }
  .hero-title { font-size:24px; }
  .hero-break { font-size:0.75em; margin-top:6px; }
  .hero-badge { font-size:11px; padding:5px 14px; margin-bottom:14px; }
  .hero-btns { flex-direction:row; align-items:center; justify-content:center; gap:8px; }
  .hero-btns .btn { padding:7px 14px; font-size:12px; letter-spacing:1px; }
  .hero-slide .hero-btns { bottom:10px; flex-direction:row; flex-wrap:nowrap; }
}

/* ========== MICRO-INTERACTIONS & ENHANCED HOVER (配色升级 v2) ========== */

a, button, .btn, .nav-link, .culture-card, .product-card, .qual-card,
.join-adv-card, .news-item, .back-to-top, .hero-arrow, .hero-dot,
.side-nav a, .stat-card, .feature-card, .pagination a {
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-primary {
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), transparent);
  opacity: 0;
  transition: opacity 0.35s;
}
.btn-primary:hover::after { opacity: 1; }

.product-card {
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: -75%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s;
  z-index: 1;
  pointer-events: none;
}
.product-card:hover::before { left: 125%; }

.qual-card .qual-img-wrap,
.qual-img-box {
  transition: transform 0.4s, box-shadow 0.4s;
  border-radius: 6px;
  overflow: hidden;
}
.qual-card:hover .qual-img-wrap,
.qual-card:hover .qual-img-box {
  transform: scale(1.06);
  box-shadow: 0 4px 20px rgba(201,169,110,0.28);
}

.news-item {
  border-radius: 4px;
  margin: 0 -16px;
  padding: 22px 16px;
}
.news-item:hover {
  padding-left: 22px;
  background: rgba(201,169,110,0.05);
}

.step-num {
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 2px 8px rgba(122,26,16,0.30);
}
.step:hover .step-num {
  transform: scale(1.12);
  box-shadow: 0 4px 16px rgba(122,26,16,0.45);
  background: #900005;
}

.back-to-top:hover,
.call-button:hover {
  background: #C9A96E !important;
  color: #2C1810 !important;
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 6px 24px rgba(201,169,110,0.40);
}

.nav-link::after {
  content:'';
  position:absolute;
  bottom:4px; left:50%;
  transform:translateX(-50%);
  width:0; height:2px;
  background:#C9A96E;
  transition:width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border-radius: 1px;
}

.form-group input, .form-group textarea,
.contact-form input, .contact-form textarea {
  transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus,
.contact-form input:focus, .contact-form textarea:focus {
  border-color: #C9A96E;
  box-shadow: 0 0 0 3px rgba(201,169,110,0.15);
  background-color: #FFFCF5;
}

.hero-title {
  text-shadow: 0 2px 20px rgba(0,0,0,0.35);
}
.hero-badge {
  letter-spacing: 5px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.25);
}
.hero-desc {
  color: rgba(245,240,230,0.80);
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,169,110,0.35), transparent);
  margin: 40px 0;
}

.footer-col a { position: relative; display: block; margin-bottom: 8px; }
.footer-col a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: #C9A96E;
  transition: width 0.3s;
}
.footer-col a:hover::after { width: 100%; }

.culture-card:hover,
.join-adv-card:hover,
.contact-info-box:hover,
.contact-form-box:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}


/* ========== MICRO-INTERACTIONS & ENHANCED HOVER (配色升级 v2) ========== */

a, button, .btn, .nav-link, .culture-card, .product-card, .qual-card,
.join-adv-card, .news-item, .back-to-top, .hero-arrow, .hero-dot,
.side-nav a, .stat-card, .feature-card, .pagination a {
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-primary {
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), transparent);
  opacity: 0;
  transition: opacity 0.35s;
}
.btn-primary:hover::after { opacity: 1; }

.product-card {
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: -75%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s;
  z-index: 1;
  pointer-events: none;
}
.product-card:hover::before { left: 125%; }

.qual-card .qual-img-wrap,
.qual-img-box {
  transition: transform 0.4s, box-shadow 0.4s;
  border-radius: 6px;
  overflow: hidden;
}
.qual-card:hover .qual-img-wrap,
.qual-card:hover .qual-img-box {
  transform: scale(1.06);
  box-shadow: 0 4px 20px rgba(201,169,110,0.28);
}

.news-item {
  border-radius: 4px;
  margin: 0 -16px;
  padding: 22px 16px;
}
.news-item:hover {
  padding-left: 22px;
  background: rgba(201,169,110,0.05);
}

.step-num {
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 2px 8px rgba(122,26,16,0.30);
}
.step:hover .step-num {
  transform: scale(1.12);
  box-shadow: 0 4px 16px rgba(122,26,16,0.45);
  background: #900005;
}

.back-to-top:hover,
.call-button:hover {
  background: #C9A96E !important;
  color: #2C1810 !important;
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 6px 24px rgba(201,169,110,0.40);
}

.nav-link::after {
  content:'';
  position:absolute;
  bottom:4px; left:50%;
  transform:translateX(-50%);
  width:0; height:2px;
  background:#C9A96E;
  transition:width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border-radius: 1px;
}

.form-group input, .form-group textarea,
.contact-form input, .contact-form textarea {
  transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus,
.contact-form input:focus, .contact-form textarea:focus {
  border-color: #C9A96E;
  box-shadow: 0 0 0 3px rgba(201,169,110,0.15);
  background-color: #FFFCF5;
}

.hero-title {
  text-shadow: 0 2px 20px rgba(0,0,0,0.35);
}
.hero-badge {
  letter-spacing: 5px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.25);
}
.hero-desc {
  color: rgba(245,240,230,0.80);
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,169,110,0.35), transparent);
  margin: 40px 0;
}

.footer-col a { position: relative; display: block; margin-bottom: 8px; }
.footer-col a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: #C9A96E;
  transition: width 0.3s;
}
.footer-col a:hover::after { width: 100%; }

.culture-card:hover,
.join-adv-card:hover,
.contact-info-box:hover,
.contact-form-box:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

/* ========== 全局 Toast 提示 ========== */
.site-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  z-index: 99999;
  transition: opacity 0.4s ease;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  pointer-events: none;
}
.site-toast-success { background: #52c41a; }
.site-toast-error   { background: #C43A31; }