/* ===== 苏州麟源斋 官网样式 · 中式国风 红金配色 ===== */
:root{
  --red:#8c1c13;          /* 主色：深绛红 */
  --red-deep:#5e0f0a;
  --red-light:#b8342a;
  --gold:#c9a227;         /* 辅色：金 */
  --gold-light:#e6c25c;
  --cream:#fdfaf4;        /* 米白背景 */
  --cream-2:#f7f1e6;
  --ink:#2b2320;          /* 墨色文字 */
  --ink-2:#6b5f57;
  --line:rgba(140,28,19,.12);
  --shadow:0 10px 40px rgba(94,15,10,.10);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  color:var(--ink);background:var(--cream);line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部条 ---------- */
.topbar{background:var(--red-deep);color:rgba(255,255,255,.85);font-size:13px;letter-spacing:.5px}
.topbar-inner{display:flex;justify-content:center;align-items:center;gap:12px;height:38px}
.topbar .dot{color:var(--gold-light);opacity:.8}

/* ---------- 头部导航 ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(253,250,244,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s}
.header.scrolled{box-shadow:0 4px 24px rgba(94,15,10,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{
  width:44px;height:44px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:var(--gold-light);
  font-size:22px;font-weight:700;font-family:"Songti SC",serif;box-shadow:0 4px 14px rgba(140,28,19,.3)
}
.logo-text strong{display:block;font-size:19px;letter-spacing:2px;color:var(--red)}
.logo-text small{font-size:10px;letter-spacing:1.5px;color:var(--ink-2)}
.nav{display:flex;gap:34px}
.nav a{font-size:15px;color:var(--ink);position:relative;padding:4px 0;transition:.25s}
.nav a::after{content:'';position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:.3s}
.nav a:hover,.nav a.active{color:var(--red)}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav-cta{
  padding:10px 24px;border-radius:999px;background:linear-gradient(135deg,var(--red),var(--red-deep));
  color:#fff;font-size:14px;letter-spacing:1px;box-shadow:0 6px 18px rgba(140,28,19,.28);transition:.3s
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(140,28,19,.36)}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-btn span{width:24px;height:2px;background:var(--red);transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05);animation:zoom 20s ease-in-out infinite alternate}
@keyframes zoom{to{transform:scale(1.15)}}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(60,8,5,.88) 0%,rgba(94,15,10,.7) 45%,rgba(140,28,19,.35) 100%)}
.hero-content{position:relative;z-index:2;color:#fff;max-width:1200px;width:100%}
.hero-eyebrow{display:inline-block;font-size:14px;letter-spacing:4px;color:var(--gold-light);border:1px solid rgba(230,194,92,.5);padding:6px 18px;border-radius:999px;margin-bottom:28px}
.hero-title{font-family:"Songti SC","STSong",serif;font-size:clamp(42px,6vw,76px);line-height:1.2;font-weight:700;letter-spacing:4px;margin-bottom:24px;text-shadow:0 4px 30px rgba(0,0,0,.3)}
.hero-title br{display:none}
.hero-desc{font-size:17px;line-height:2;color:rgba(255,255,255,.88);margin-bottom:40px;max-width:560px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 36px;border-radius:999px;font-size:15px;letter-spacing:1.5px;transition:.3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--gold),#a9861b);color:#3a2a00;font-weight:600;box-shadow:0 8px 24px rgba(201,162,39,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(201,162,39,.45)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-block{width:100%}
.hero-scroll{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.7);text-align:center;font-size:12px;letter-spacing:2px}
.hero-scroll i{display:block;width:1px;height:40px;background:linear-gradient(rgba(255,255,255,.8),transparent);margin:10px auto 0}

/* ---------- 特色条 ---------- */
.features{background:var(--cream-2);padding:0}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;transform:translateY(-1px)}
.feature{padding:48px 28px;text-align:center;border-right:1px solid var(--line);transition:.3s}
.feature:last-child{border-right:none}
.feature:hover{background:#fff;transform:translateY(-6px);box-shadow:var(--shadow)}
.feature-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:var(--gold-light);
  font-family:"Songti SC",serif;font-size:22px;font-weight:700
}
.feature h3{font-size:18px;color:var(--red);margin-bottom:8px;letter-spacing:1px}
.feature p{font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- 通用 section ---------- */
section{padding:96px 0}
.section-eyebrow{font-size:13px;letter-spacing:4px;color:var(--gold);font-weight:600;margin-bottom:14px}
.section-title{font-family:"Songti SC","STSong",serif;font-size:clamp(30px,4vw,44px);color:var(--red);letter-spacing:3px;margin-bottom:16px;position:relative}
.section-head{text-align:center;margin-bottom:60px}
.section-head .section-title::after{content:'';display:block;width:60px;height:3px;background:var(--gold);margin:18px auto 0;border-radius:2px}
.section-sub{color:var(--ink-2);font-size:16px}
.section-head.light .section-title{color:#fff}
.section-head.light .section-sub{color:rgba(255,255,255,.75)}

/* ---------- 品牌故事 ---------- */
.about{background:var(--cream)}
.about-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;align-items:center}
.about-media{position:relative}
.about-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;height:520px;object-fit:cover}
.about-badge{
  position:absolute;right:-20px;bottom:34px;width:110px;height:110px;border-radius:50%;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:var(--gold-light);
  display:grid;place-items:center;align-content:center;text-align:center;box-shadow:0 10px 30px rgba(140,28,19,.35)
}
.about-badge strong{font-size:26px;font-family:"Songti SC",serif;letter-spacing:2px}
.about-badge span{font-size:12px;letter-spacing:2px;opacity:.85}
.about-text p{color:var(--ink-2);margin-bottom:18px;font-size:16px}
.about-list{list-style:none;margin:26px 0 34px}
.about-list li{position:relative;padding-left:28px;margin-bottom:12px;color:var(--ink);font-size:15px}
.about-list li::before{content:'◆';position:absolute;left:0;color:var(--gold);font-size:12px}

/* ---------- 产品 ---------- */
.products{background:var(--cream-2)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 4px 20px rgba(94,15,10,.06);transition:.35s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-8px);box-shadow:0 20px 50px rgba(94,15,10,.16)}
.product-img{height:240px;overflow:hidden;background:var(--cream)}
.product-img img{width:100%;height:100%;object-fit:cover;transition:.6s}
.product-card:hover .product-img img{transform:scale(1.08)}
.product-body{padding:26px;flex:1;display:flex;flex-direction:column}
.product-tag{display:inline-block;align-self:flex-start;font-size:12px;color:var(--red);background:rgba(140,28,19,.08);padding:3px 12px;border-radius:999px;margin-bottom:12px;letter-spacing:1px}
.product-body h3{font-family:"Songti SC",serif;font-size:21px;color:var(--red);margin-bottom:10px;letter-spacing:1px}
.product-body p{font-size:14px;color:var(--ink-2);line-height:1.8;flex:1}
.product-meta{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-2)}
.product-meta .price{color:var(--red);font-weight:700;font-size:17px}
.product-note{margin-top:44px;text-align:center;padding:26px;background:#fff;border-radius:var(--radius);border:1px dashed rgba(201,162,39,.5)}
.product-note p{color:var(--ink);font-size:15px;letter-spacing:.5px}
.product-note .note-sub{margin-top:8px;color:var(--red);font-weight:600;font-size:14px}

/* ---------- 匠心工艺 ---------- */
.craft{background:linear-gradient(160deg,var(--red-deep),var(--red));color:#fff;position:relative;overflow:hidden}
.craft::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(201,162,39,.18),transparent 55%)}
.craft .container{position:relative;z-index:2}
.craft-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.craft-step{background:rgba(255,255,255,.07);border:1px solid rgba(230,194,92,.25);border-radius:var(--radius);padding:34px 26px;transition:.35s;backdrop-filter:blur(6px)}
.craft-step:hover{background:rgba(255,255,255,.14);transform:translateY(-8px);border-color:var(--gold)}
.step-num{font-family:"Songti SC",serif;font-size:38px;color:var(--gold-light);opacity:.9;margin-bottom:14px;line-height:1}
.craft-step h3{font-size:19px;margin-bottom:10px;letter-spacing:1px;color:#fff}
.craft-step p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.8}

/* ---------- 联系 ---------- */
.contact{background:var(--cream)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-desc{color:var(--ink-2);margin-bottom:32px;font-size:16px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:22px}
.contact-list li{display:flex;gap:16px;align-items:flex-start}
.ci-icon{flex:none;width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--red),var(--red-deep));color:var(--gold-light);font-family:"Songti SC",serif;font-size:18px}
.contact-list strong{display:block;font-size:14px;color:var(--ink-2);font-weight:400;letter-spacing:1px}
.contact-list span{font-size:16px;color:var(--ink)}
.contact-card{background:#fff;border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);border-top:4px solid var(--red)}
.contact-card h3{font-family:"Songti SC",serif;font-size:24px;color:var(--red);margin-bottom:24px;letter-spacing:2px}
.contact-form{display:flex;flex-direction:column;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form input,.contact-form textarea{
  width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:10px;font-size:15px;
  font-family:inherit;background:var(--cream);transition:.25s;color:var(--ink)
}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--gold);background:#fff;box-shadow:0 0 0 3px rgba(201,162,39,.12)}
.contact-form textarea{resize:vertical}
.form-tip{text-align:center;font-size:14px;color:var(--red);min-height:20px}

/* ---------- 页脚 ---------- */
.footer{background:var(--red-deep);color:rgba(255,255,255,.8);padding:56px 0 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .logo-mark{box-shadow:none}
.footer-brand strong{display:block;color:#fff;font-size:19px;letter-spacing:2px;font-family:"Songti SC",serif}
.footer-brand p{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:1px}
.footer-links{display:flex;gap:28px;flex-wrap:wrap}
.footer-links a{font-size:14px;transition:.25s}
.footer-links a:hover{color:var(--gold-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.5px}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:28px;bottom:28px;width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:var(--gold-light);font-size:20px;
  box-shadow:0 8px 24px rgba(140,28,19,.35);opacity:0;visibility:hidden;transition:.3s;z-index:99
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-4px)}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .feature:nth-child(2){border-right:none}
  .feature:nth-child(1),.feature:nth-child(2){border-bottom:1px solid var(--line)}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .about-media img{height:380px}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .craft-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  section{padding:64px 0}
  .nav,.nav-cta{display:none}
  .nav.open{
    display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--cream);
    padding:20px 24px;gap:18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)
  }
  .menu-btn{display:flex}
  .features-grid{grid-template-columns:1fr}
  .feature{border-right:none;border-bottom:1px solid var(--line)}
  .product-grid,.craft-steps{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .hero-title br{display:block}
  .topbar-inner{font-size:11px;gap:6px}
  .about-badge{width:88px;height:88px;right:12px}
  .about-badge strong{font-size:20px}
}