/* ==========================================
   NANGONG SPORTS — 墨韵东方 · 燃动真我
   独家设计系统 · Awwwards 级视觉语言
   ========================================== */

/* 基础重置 */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', serif;
  overflow-x:hidden;
  background:#FDF6F0;
  color:#2D2A26;
  line-height:1.6;
}

/* 滚动条 */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:#F5F0EB; }
::-webkit-scrollbar-thumb { background:#D4A55A; border-radius:3px; }

/* 选中文本 */
::selection { background:#FF6B4A; color:#fff; }

/* ==========================================
   核心布局
   ========================================== */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#F5F0EB; }

/* 装饰水墨晕染（偶数节背景） */
.section:nth-child(even)::before {
  content:'';
  position:absolute;
  top:-40px; right:-80px;
  width:320px; height:320px;
  background:radial-gradient(circle at 30% 40%, rgba(255,107,74,0.06) 0%, transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.section:nth-child(even)::after {
  content:'';
  position:absolute;
  bottom:-60px; left:-60px;
  width:240px; height:240px;
  background:radial-gradient(circle at 70% 60%, rgba(212,165,90,0.07) 0%, transparent 65%);
  border-radius:50%;
  pointer-events:none;
}

/* ==========================================
   导航 — 墨韵留白
   ========================================== */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(253,246,240,0.92);
  backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(212,165,90,0.15);
  box-shadow:0 2px 24px rgba(45,42,38,0.04);
}

.header-inner {
  display:flex; align-items:center; justify-content:space-between;
  height:72px; max-width:1200px; margin:0 auto; padding:0 24px;
}

.logo {
  display:flex; align-items:center; gap:10px;
  font-weight:800; font-size:1.25rem;
  text-decoration:none; color:#2D2A26;
  letter-spacing:1px;
  position:relative;
}

.logo::after {
  content:'';
  display:block;
  width:4px; height:4px;
  background:#FF6B4A;
  border-radius:50%;
  position:absolute; bottom:2px; right:-6px;
  animation:pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,100% { opacity:0.4; transform:scale(1); }
  50% { opacity:1; transform:scale(1.6); }
}

.logo-icon {
  width:40px; height:40px;
  border-radius:50%;
  background:linear-gradient(135deg, #FF6B4A, #E85D3A);
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; color:#fff;
  box-shadow:0 4px 12px rgba(255,107,74,0.3);
  position:relative;
  overflow:hidden;
}

.logo-icon::before {
  content:'';
  position:absolute; inset:0;
  background:url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 2L15.09 8.26L22 9.27L17 14.14L18.18 21.02L12 17.77L5.82 21.02L7 14.14L2 9.27L8.91 8.26L12 2Z' fill='rgba(255,255,255,0.9)'/%3E%3C/svg%3E") center/50% no-repeat;
  opacity:0.7;
}

.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }

.main-nav li { position:relative; }

.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:500;
  color:#2D2A26; transition:0.3s;
  letter-spacing:1px;
  position:relative;
  padding:4px 0;
}

.main-nav a::after {
  content:'';
  position:absolute; bottom:0; left:50%; transform:translateX(-50%) scaleX(0);
  width:100%; height:2px;
  background:linear-gradient(90deg, #FF6B4A, #D4A55A);
  transition:transform 0.35s cubic-bezier(0.22,1,0.36,1);
  transform-origin:center;
}

.main-nav a:hover::after { transform:translateX(-50%) scaleX(1); }

.main-nav a:hover { color:#FF6B4A; }

.nav-cta {
  padding:10px 24px !important; border-radius:50px !important;
  color:#fff !important; font-weight:600 !important;
  background:linear-gradient(135deg, #FF6B4A, #E85D3A);
  box-shadow:0 4px 16px rgba(255,107,74,0.35);
  transition:0.35s cubic-bezier(0.22,1,0.36,1) !important;
  letter-spacing:1.5px;
  position:relative;
  overflow:hidden;
}

.nav-cta::before {
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(135deg, #E85D3A, #D4A55A);
  opacity:0; transition:0.4s;
}

.nav-cta:hover::before { opacity:1; }

.nav-cta::after { display:none !important; }

.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 24px rgba(255,107,74,0.45); }

.nav-cta span { position:relative; z-index:1; }

.menu-toggle {
  display:none;
  width:36px; height:36px; align-items:center; justify-content:center;
  border:none; background:rgba(255,107,74,0.1); border-radius:8px;
  cursor:pointer; font-size:1.2rem; color:#FF6B4A;
  transition:0.2s;
}

.menu-toggle:hover { background:rgba(255,107,74,0.2); }

/* ==========================================
   Hero — 水墨激浪
   ========================================== */
.hero {
  min-height:80vh; display:flex; align-items:center;
  position:relative; overflow:hidden;
  padding-top:72px;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(255,107,74,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(212,165,90,0.06) 0%, transparent 50%);
}

.hero::before {
  content:'';
  position:absolute; top:-10%; right:-5%;
  width:500px; height:500px;
  background:radial-gradient(circle at center, rgba(255,107,74,0.05) 0%, transparent 70%);
  border-radius:50%;
  animation:hero-float 8s ease-in-out infinite;
}

.hero::after {
  content:'';
  position:absolute; bottom:-15%; left:-5%;
  width:400px; height:400px;
  background:radial-gradient(circle at center, rgba(212,165,90,0.05) 0%, transparent 70%);
  border-radius:50%;
  animation:hero-float 10s ease-in-out infinite reverse;
}

@keyframes hero-float {
  0%,100% { transform:translate(0,0) scale(1); }
  50% { transform:translate(20px,-20px) scale(1.05); }
}

.hero-content { max-width:720px; position:relative; z-index:1; }

.hero-eyebrow {
  display:inline-block;
  font-size:0.8rem; font-weight:700; letter-spacing:3px;
  padding:6px 20px; border-radius:50px;
  margin-bottom:20px;
  background:rgba(255,107,74,0.1);
  color:#E85D3A;
  border:1px solid rgba(255,107,74,0.2);
  text-transform:uppercase;
}

.hero h1 {
  font-size:3.6rem; line-height:1.15; margin-bottom:20px;
  font-weight:800; letter-spacing:-1px;
  color:#2D2A26;
  position:relative;
}

.hero h1::after {
  content:'燃';
  position:absolute; right:-8px; top:-12px;
  font-size:1.2rem; color:#FF6B4A; opacity:0.3;
  font-weight:900;
}

.hero h1 strong { color:#FF6B4A; font-weight:900; }

.hero p {
  font-size:1.15rem; opacity:0.6; max-width:560px; margin-bottom:36px;
  line-height:1.8; font-weight:400;
  letter-spacing:0.3px;
}

.hero-buttons { display:flex; gap:16px; flex-wrap:wrap; }

.hero-image {
  border-radius:16px; overflow:hidden;
  box-shadow:0 24px 48px -12px rgba(45,42,38,0.15);
  position:relative;
}

.hero-image::before {
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(255,107,74,0.1), rgba(212,165,90,0.05));
  z-index:1;
  border-radius:16px;
}

.hero-image img { width:100%; height:auto; display:block; transition:0.6s; }
.hero-image:hover img { transform:scale(1.02); }

/* ==========================================
   按钮 — 朱砂点墨
   ========================================== */
.btn {
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 32px; border-radius:50px;
  font-weight:600; cursor:pointer; border:none;
  text-decoration:none; transition:0.35s cubic-bezier(0.22,1,0.36,1);
  font-size:0.95rem; letter-spacing:0.5px;
  position:relative; overflow:hidden;
}

.btn-primary {
  color:#fff;
  background:linear-gradient(135deg, #FF6B4A, #E85D3A);
  box-shadow:0 6px 20px rgba(255,107,74,0.4);
}

.btn-primary::before {
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(135deg, #E85D3A, #D4A55A);
  opacity:0; transition:0.4s;
}

.btn-primary:hover::before { opacity:1; }

.btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 32px rgba(255,107,74,0.5); }

.btn-primary span { position:relative; z-index:1; }

.btn-outline {
  background:transparent; border:1.5px solid #2D2A26;
  color:#2D2A26; position:relative;
}

.btn-outline::before {
  content:'';
  position:absolute; inset:0;
  background:#2D2A26; opacity:0; transition:0.3s;
  border-radius:50px;
}

.btn-outline:hover::before { opacity:0.05; }

.btn-outline:hover { transform:translateY(-2px); border-color:#FF6B4A; color:#FF6B4A; }

/* ==========================================
   标签/标题 — 金石韵味
   ========================================== */
.section-label {
  display:inline-block;
  font-size:0.75rem; font-weight:700; letter-spacing:4px;
  margin-bottom:14px;
  color:#D4A55A;
  text-transform:uppercase;
  position:relative;
  padding-left:36px;
}

.section-label::before {
  content:'';
  position:absolute; left:0; top:50%; transform:translateY(-50%);
  width:24px; height:1.5px;
  background:linear-gradient(90deg, #D4A55A, transparent);
}

.section-title {
  font-size:2.4rem; margin-bottom:14px;
  font-weight:800; line-height:1.2;
  letter-spacing:-0.5px;
  color:#2D2A26;
}

.section-title strong { color:#FF6B4A; }

.section-desc {
  max-width:600px; opacity:0.6; margin-bottom:44px;
  font-size:1.05rem; line-height:1.8;
}

/* ==========================================
   卡片网格 — 宣纸层叠
   ========================================== */
.cards-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px;
}

.category-card {
  border-radius:16px; padding:32px;
  background:#fff; border:1px solid rgba(212,165,90,0.12);
  transition:0.4s cubic-bezier(0.22,1,0.36,1);
  position:relative; overflow:hidden;
}

.category-card::before {
  content:'';
  position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, #FF6B4A, #D4A55A);
  opacity:0; transition:0.4s;
}

.category-card:hover::before { opacity:1; }

.category-card:hover {
  transform:translateY(-6px);
  box-shadow:0 16px 40px -8px rgba(45,42,38,0.1);
  border-color:rgba(255,107,74,0.2);
}

.card-icon {
  width:52px; height:52px; border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.4rem;
  background:linear-gradient(135deg, rgba(255,107,74,0.1), rgba(212,165,90,0.1));
  color:#E85D3A;
  transition:0.3s;
}

.category-card:hover .card-icon {
  background:linear-gradient(135deg, rgba(255,107,74,0.2), rgba(212,165,90,0.15));
  transform:scale(1.05);
}

.card-link {
  font-weight:600; font-size:0.9rem; text-decoration:none;
  color:#FF6B4A; display:inline-flex; align-items:center; gap:6px;
  margin-top:12px; transition:0.3s;
}

.card-link:hover { gap:12px; color:#E85D3A; }

/* ==========================================
   特性块 — 平衡之美
   ========================================== */
.feature-block {
  display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center;
}

.feature-image {
  border-radius:16px; overflow:hidden;
  box-shadow:0 16px 40px -12px rgba(45,42,38,0.1);
  position:relative;
}

.feature-image::after {
  content:'';
  position:absolute; inset:0;
  border:1px solid rgba(212,165,90,0.2);
  border-radius:16px;
  pointer-events:none;
}

.feature-image img { width:100%; height:auto; display:block; transition:0.6s; }
.feature-image:hover img { transform:scale(1.03); }

.feature-text { position:relative; }

.feature-list { list-style:none; margin-top:20px; }
.feature-list li {
  padding:10px 0; display:flex; align-items:center; gap:12px;
  font-size:0.95rem; border-bottom:1px solid rgba(45,42,38,0.04);
}

.feature-list li:last-child { border-bottom:none; }

.feature-list li::before {
  content:'燃';
  font-weight:800; font-size:0.7rem;
  color:#fff;
  background:linear-gradient(135deg, #FF6B4A, #E85D3A);
  width:22px; height:22px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}

/* ==========================================
   数据条 — 金石为信
   ========================================== */
.stats-bar {
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center;
}

.stat-item {
  padding:28px 16px; border-radius:16px;
  background:#fff; border:1px solid rgba(212,165,90,0.1);
  transition:0.3s; position:relative;
  overflow:hidden;
}

.stat-item::before {
  content:'';
  position:absolute; bottom:0; left:10%; right:10%; height:3px;
  background:linear-gradient(90deg, transparent, #D4A55A, transparent);
  opacity:0; transition:0.3s;
}

.stat-item:hover::before { opacity:1; }
.stat-item:hover { transform:translateY(-4px); box-shadow:0 12px 32px -8px rgba(45,42,38,0.08); }

.stat-number {
  font-size:2.6rem; font-weight:900;
  background:linear-gradient(135deg, #FF6B4A, #E85D3A);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1.1;
}

.stat-label {
  font-size:0.9rem; opacity:0.6; margin-top:8px;
  font-weight:500; letter-spacing:0.5px;
}

/* ==========================================
   内容墙 — 墨韵长廊
   ========================================== */
.content-wall {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px;
}

.content-wall-item {
  border-radius:16px; overflow:hidden;
  background:#fff; border:1px solid rgba(212,165,90,0.1);
  transition:0.4s cubic-bezier(0.22,1,0.36,1);
  position:relative;
}

.content-wall-item:hover {
  transform:translateY(-6px);
  box-shadow:0 16px 40px -8px rgba(45,42,38,0.1);
  border-color:rgba(255,107,74,0.15);
}

.content-wall-item img {
  width:100%; height:220px; object-fit:cover;
  transition:0.6s;
}

.content-wall-item:hover img { transform:scale(1.04); }

.content-wall-body { padding:24px; }
.content-wall-body h3 { font-size:1.1rem; font-weight:700; margin-bottom:8px; }
.content-wall-body p { font-size:0.9rem; opacity:0.6; line-height:1.7; }

/* ==========================================
   FAQ — 卷轴展开
   ========================================== */
.faq-list { max-width:800px; margin:0 auto; }

.faq-item {
  border:1px solid rgba(212,165,90,0.15);
  border-radius:12px; margin-bottom:10px;
  overflow:hidden; cursor:pointer;
  background:#fff;
  transition:0.3s;
}

.faq-item:hover { border-color:rgba(255,107,74,0.2); }

.faq-item .faq-question {
  padding:18px 24px; font-weight:600; font-size:1rem;
  display:flex; justify-content:space-between; align-items:center;
  color:#2D2A26; transition:0.3s;
  user-select:none;
}

.faq-item .faq-question::after {
  content:'▼';
  font-size:0.7rem; color:#D4A55A;
  transition:0.3s;
}

.faq-item.open .faq-question::after { transform:rotate(180deg); }

.faq-item .faq-answer {
  padding:0 24px 18px; display:none;
  opacity:0.7; line-height:1.8; font-size:0.95rem;
}

.faq-item.open .faq-answer { display:block; }

/* ==========================================
   CTA横幅 — 朱红大观
   ========================================== */
.cta-banner {
  padding:64px 24px; text-align:center;
  border-radius:20px;
  background:linear-gradient(135deg, #FF6B4A 0%, #E85D3A 50%, #D4A55A 100%);
  color:#fff;
  position:relative; overflow:hidden;
  box-shadow:0 16px 48px -8px rgba(255,107,74,0.4);
}

.cta-banner::before {
  content:'';
  position:absolute; top:-50%; right:-30%;
  width:500px; height:500px;
  background:radial-gradient(circle at center, rgba(255,255,255,0.08) 0%, transparent 60%);
  border-radius:50%;
  animation:cta-float 6s ease-in-out infinite;
}

.cta-banner::after {
  content:'';
  position:absolute; bottom:-40%; left:-20%;
  width:400px; height:400px;
  background:radial-gradient(circle at center, rgba(255,255,255,0.05) 0%, transparent 60%);
  border-radius:50%;
  animation:cta-float 8s ease-in-out infinite reverse;
}

@keyframes cta-float {
  0%,100% { transform:translate(0,0) scale(1); }
  50% { transform:translate(15px,-15px) scale(1.03); }
}

.cta-banner h2 { color:#fff; font-size:2.2rem; font-weight:800; margin-bottom:12px; position:relative; z-index:1; }
.cta-banner p { color:rgba(255,255,255,0.85); max-width:500px; margin:0 auto 28px; position:relative; z-index:1; font-size:1.05rem; }

.cta-banner .btn-primary {
  background:#fff; color:#E85D3A;
  box-shadow:0 6px 20px rgba(0,0,0,0.15);
  position:relative; z-index:1;
}

.cta-banner .btn-primary::before {
  background:rgba(255,255,255,0.9);
}

/* ==========================================
   页脚 — 余韵悠长
   ========================================== */
.site-footer {
  padding:64px 0 32px;
  background:#2D2A26;
  color:rgba(255,255,255,0.8);
  position:relative;
}

.site-footer::before {
  content:'';
  position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, #FF6B4A, #D4A55A, #FF6B4A);
  background-size:200% 100%;
  animation:footer-glow 4s linear infinite;
}

@keyframes footer-glow {
  0% { background-position:0% 0%; }
  100% { background-position:200% 0%; }
}

.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px;
}

.footer-brand p { font-size:0.9rem; opacity:0.6; line-height:1.8; margin-top:12px; }

.footer-col h4 {
  font-size:0.9rem; font-weight:700; color:#fff;
  margin-bottom:16px; letter-spacing:1px;
  position:relative; padding-bottom:8px;
}

.footer-col h4::after {
  content:'';
  position:absolute; bottom:0; left:0;
  width:24px; height:2px;
  background:#D4A55A;
}

.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul a {
  color:rgba(255,255,255,0.55); text-decoration:none;
  font-size:0.85rem; transition:0.3s;
  position:relative; padding-left:0;
}

.footer-col ul a:hover { color:#D4A55A; padding-left:4px; }

.footer-bottom {
  border-top:1px solid rgba(255,255,255,0.06);
  margin-top:40px; padding-top:20px;
  text-align:center; font-size:0.8rem; opacity:0.4;
  letter-spacing:1px;
}

/* ==========================================
   工具类
   ========================================== */
.text-accent { color:#FF6B4A; }
.text-center { text-align:center; }

.seo-description {
  max-width:600px; margin:0 auto 48px;
  opacity:0.6; font-size:1.05rem; line-height:1.8;
}

.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 装饰分隔线 */
.divider-ink {
  width:60px; height:2px;
  background:linear-gradient(90deg, #FF6B4A, #D4A55A);
  margin:24px auto; border-radius:1px;
}

/* 水墨溅点装饰 */
.ink-dot {
  position:absolute; border-radius:50%;
  pointer-events:none;
  background:radial-gradient(circle at 30% 30%, rgba(255,107,74,0.08), transparent);
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
  .hero h1 { font-size:2.8rem; }
  .section-title { font-size:2rem; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
}

@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); gap:16px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }

  .main-nav {
    display:none;
    position:absolute; top:72px; left:0; width:100%;
    background:rgba(253,246,240,0.98);
    backdrop-filter:blur(16px);
    padding:24px; flex-direction:column; gap:16px;
    border-bottom:1px solid rgba(212,165,90,0.15);
    box-shadow:0 16px 32px rgba(0,0,0,0.06);
  }

  .main-nav.open { display:flex; }

  .menu-toggle { display:flex; }

  .hero { min-height:60vh; padding-top:72px; }
  .hero h1 { font-size:2.2rem; }
  .hero p { font-size:1rem; }
  .hero-buttons { flex-direction:row; flex-wrap:wrap; }

  .section { padding:56px 0; }
  .section-title { font-size:1.6rem; }

  .cta-banner { padding:48px 20px; }
  .cta-banner h2 { font-size:1.6rem; }

  .content-wall { grid-template-columns:1fr 1fr; gap:16px; }
}

@media (max-width: 480px) {
  .cards-grid, .content-wall { grid-template-columns:1fr; }
  .stats-bar { grid-template-columns:1fr 1fr; gap:12px; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .hero-buttons { flex-direction:column; }

  .hero h1 { font-size:1.8rem; }
  .hero { min-height:50vh; }

  .section-title { font-size:1.4rem; }
  .stat-number { font-size:2rem; }

  .header-inner { height:64px; }
  .logo { font-size:1.1rem; }
  .logo-icon { width:34px; height:34px; font-size:0.9rem; }

  .btn { padding:12px 24px; font-size:0.85rem; }
  .cta-banner h2 { font-size:1.3rem; }
  .category-card { padding:24px; }
}

/* ==========================================
   额外装饰：水墨笔触纹理
   ========================================== */
.texture-ink {
  position:relative;
}

.texture-ink::after {
  content:'';
  position:absolute; inset:0;
  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%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100' height='100' filter='url(%23noise)' opacity='0.02'/%3E%3C/svg%3E");
  pointer-events:none;
  opacity:0.3;
}

/* 金色点缀线 */
.gold-line {
  width:100%; height:1px;
  background:linear-gradient(90deg, transparent, rgba(212,165,90,0.3), transparent);
  margin:24px 0;
}

/* 卡片内的小装饰 */
.card-corner {
  position:absolute; top:0; right:0;
  width:40px; height:40px;
  overflow:hidden;
}

.card-corner::before {
  content:'';
  position:absolute; top:-20px; right:-20px;
  width:40px; height:40px;
  background:linear-gradient(135deg, #FF6B4A, #D4A55A);
  transform:rotate(45deg);
  opacity:0.08;
}

/* 动感波纹（用于Hero装饰） */
.wave-ornament {
  position:absolute; bottom:0; left:0; right:0;
  height:40px;
  background:url("data:image/svg+xml,%3Csvg width='1200' height='40' viewBox='0 0 1200 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 20C200 0 400 40 600 20C800 0 1000 40 1200 20V40H0V20Z' fill='rgba(255,107,74,0.03)'/%3E%3C/svg%3E") repeat-x bottom;
  pointer-events:none;
}

/* 字体粗细工具 */
.fw-300 { font-weight:300; }
.fw-500 { font-weight:500; }
.fw-700 { font-weight:700; }
.fw-900 { font-weight:900; }

/* 间距工具 */
.gap-sm { gap:8px; }
.gap-md { gap:16px; }
.gap-lg { gap:24px; }