/* ============================================================
   南屿泽科技（深圳）有限公司 · 官网设计系统
   品牌主色：赤陶 Terracotta #D97757（Claude 暖色系）
   纯静态、零构建依赖、可直接部署到 Nginx
   ============================================================ */

:root{
  /* —— 色彩 —— */
  --terracotta:#D97757;
  --terracotta-600:#C9633F;
  --terracotta-700:#AF4F2D;
  --terracotta-soft:#FAEDE6;
  --terracotta-tint:#FDF6F2;
  --gold:#E0A24E;
  --ink:#2A2521;
  --ink-2:#5A524B;
  --muted:#8C837B;
  --cream:#FDFBF8;
  --cream-2:#F7F1EA;
  --card:#FFFFFF;
  --line:#EEE7DF;
  --line-2:#E2D8CD;

  /* —— 阴影（Apple 三层） —— */
  --shadow-sm:0 1px 2px rgba(42,37,33,.04),0 2px 6px rgba(42,37,33,.05);
  --shadow-md:0 2px 6px rgba(42,37,33,.04),0 10px 30px rgba(42,37,33,.07);
  --shadow-lg:0 6px 14px rgba(42,37,33,.06),0 24px 60px rgba(42,37,33,.12);
  --shadow-brand:0 10px 30px rgba(217,119,87,.28);

  /* —— 圆角 / 版心 —— */
  --r-xs:8px; --r-sm:12px; --r:18px; --r-lg:26px; --r-pill:999px;
  --maxw:1180px; --gut:24px;

  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,
    BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--cream);
  line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(217,119,87,.45);outline-offset:2px;border-radius:6px}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:10px 16px;border-radius:0 0 8px 0;z-index:300}
.skip:focus{left:0}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}

/* —— 按钮 —— */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 24px;border-radius:var(--r-pill);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background .2s,color .2s,border-color .2s;
  white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--terracotta);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--terracotta-600);transform:translateY(-2px);
  box-shadow:0 14px 38px rgba(217,119,87,.34)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:var(--terracotta);color:var(--terracotta-700);transform:translateY(-2px)}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-light{background:rgba(255,255,255,.18);color:#fff;border-color:rgba(255,255,255,.34)}
.btn-light:hover{background:rgba(255,255,255,.3)}

/* —— 导航 —— */
.nav{position:sticky;top:0;z-index:100;background:rgba(253,251,248,.82);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand .mark{width:40px;height:40px;flex:0 0 auto}
.brand .wm{font-weight:800;font-size:20px;letter-spacing:.04em;line-height:1.05}
.brand .wm small{display:block;font-size:9.5px;font-weight:600;letter-spacing:.32em;
  color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:9px 15px;border-radius:var(--r-pill);font-size:15px;font-weight:500;
  color:var(--ink-2);transition:background .2s,color .2s}
.nav-links a:hover,.nav-links a.active{background:var(--terracotta-soft);color:var(--terracotta-700)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{content:"";display:block;width:18px;
  height:2px;background:var(--ink);border-radius:2px;margin:0 auto;transition:.25s}
.nav-toggle i::before{transform:translateY(-6px)}
.nav-toggle i::after{transform:translateY(4px)}
.nav-mobile{display:none;border-top:1px solid var(--line);background:var(--cream)}
.nav-mobile.open{display:block}
.nav-mobile a{display:block;padding:15px 24px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line)}
.nav-mobile a:last-child{border-bottom:0}

/* —— 区块通用 —— */
.section{padding:88px 0}
.section-alt{background:var(--cream-2)}
.section-tint{background:linear-gradient(180deg,var(--cream),var(--terracotta-tint))}
.section-head{max-width:720px;margin:0 auto 54px;text-align:center}
.section-head.left{margin-left:0;text-align:left}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--terracotta);background:var(--terracotta-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px}
.section-head h2{font-size:clamp(26px,3.6vw,38px);letter-spacing:-.02em}
.section-head .lead{font-size:17px;color:var(--ink-2);margin-top:16px}

.grid{display:grid;gap:22px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}

/* —— 卡片 —— */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:30px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-2)}
.card-icon{width:54px;height:54px;border-radius:15px;display:flex;align-items:center;
  justify-content:center;font-size:26px;margin-bottom:18px;
  background:var(--terracotta-soft);color:var(--terracotta-700)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15px}
.card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{font-size:12.5px;font-weight:600;color:var(--ink-2);background:var(--cream-2);
  border:1px solid var(--line);padding:5px 11px;border-radius:var(--r-pill)}

/* —— hero —— */
.hero{position:relative;overflow:hidden;padding:92px 0 84px;
  background:
    radial-gradient(1100px 480px at 82% -12%,rgba(224,162,78,.20),transparent 60%),
    radial-gradient(900px 520px at -5% 6%,rgba(217,119,87,.18),transparent 55%),
    linear-gradient(180deg,#FFFFFF,var(--cream))}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:9px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);color:var(--ink-2);
  font-size:13px;font-weight:600;padding:7px 8px 7px 14px;border-radius:var(--r-pill);margin-bottom:24px}
.hero-badge b{color:var(--terracotta-700)}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:#3FB68B;
  box-shadow:0 0 0 4px rgba(63,182,139,.18)}
.hero h1{font-size:clamp(33px,5.1vw,54px);line-height:1.1;letter-spacing:-.025em}
.hero h1 .hl{color:var(--terracotta)}
.hero .lead{font-size:clamp(16px,1.9vw,19px);color:var(--ink-2);margin:24px 0 34px;max-width:548px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero-meta .n{font-size:27px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.hero-meta .l{font-size:13px;color:var(--muted);margin-top:2px}

/* hero 可视卡片 */
.hero-visual{position:relative}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:26px;position:relative;z-index:2}
.hero-card .hc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.hero-card .hc-title{font-weight:700;font-size:15px}
.hero-card .hc-live{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;
  color:#2E9C76;background:#E7F6EF;padding:5px 11px;border-radius:var(--r-pill)}
.hero-card .hc-live .dot{width:7px;height:7px;border-radius:50%;background:#2E9C76}
.hc-rows{display:grid;gap:11px}
.hc-row{display:flex;align-items:center;gap:13px;padding:13px 15px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:var(--cream)}
.hc-row .ic{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;
  justify-content:center;font-size:19px;background:var(--terracotta-soft)}
.hc-row .tx{flex:1}
.hc-row .tx b{display:block;font-size:14px}
.hc-row .tx span{font-size:12.5px;color:var(--muted)}
.hc-row .st{font-size:12px;font-weight:700;color:#2E9C76}
.hero-blob{position:absolute;inset:-22px -22px auto auto;width:200px;height:200px;
  background:radial-gradient(circle at 30% 30%,rgba(224,162,78,.5),rgba(217,119,87,.2));
  filter:blur(40px);z-index:1;border-radius:50%}

/* —— logo 墙 / 信任条 —— */
.trust{padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:#fff}
.trust-inner{display:flex;align-items:center;justify-content:center;gap:14px 40px;flex-wrap:wrap}
.trust span{color:var(--muted);font-size:14px;font-weight:600}
.trust b{color:var(--ink-2);font-size:15px;font-weight:700}

/* —— 特性交替行 —— */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center;margin:0 auto}
.feature + .feature{margin-top:80px}
.feature.flip .feat-media{order:2}
.feat-text .eyebrow{margin-bottom:16px}
.feat-text h3{font-size:clamp(22px,3vw,30px);letter-spacing:-.02em}
.feat-text p{color:var(--ink-2);margin-top:16px;font-size:16px}
.feat-list{margin-top:22px;display:grid;gap:13px}
.feat-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink)}
.feat-list .ck{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--terracotta-soft);
  color:var(--terracotta-700);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;margin-top:1px}
.feat-media{background:linear-gradient(150deg,#fff,var(--cream-2));border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);padding:30px;min-height:280px;
  display:flex;align-items:center;justify-content:center}

/* —— 统计 —— */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat{text-align:center;padding:30px 18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--shadow-sm)}
.stat .n{font-size:clamp(30px,4vw,42px);font-weight:800;color:var(--terracotta);letter-spacing:-.02em}
.stat .l{color:var(--ink-2);font-size:14.5px;margin-top:6px}

/* —— CTA 带 —— */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);padding:56px 48px;
  background:linear-gradient(120deg,var(--terracotta) 0%,var(--terracotta-600) 55%,#A8482A 100%);
  color:#fff;box-shadow:var(--shadow-lg);text-align:center}
.cta-band::after{content:"";position:absolute;inset:auto -60px -90px auto;width:280px;height:280px;
  border-radius:50%;background:rgba(255,255,255,.12)}
.cta-band h2{font-size:clamp(24px,3.4vw,34px);position:relative;z-index:2}
.cta-band p{margin:14px auto 28px;max-width:560px;color:rgba(255,255,255,.92);
  font-size:17px;position:relative;z-index:2}
.cta-band .hero-cta{justify-content:center;position:relative;z-index:2}

/* —— 联系 —— */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.info-row{display:flex;gap:16px;align-items:flex-start;padding:20px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:0}
.info-row .ic{flex:0 0 auto;width:46px;height:46px;border-radius:13px;background:var(--terracotta-soft);
  color:var(--terracotta-700);display:flex;align-items:center;justify-content:center;font-size:21px}
.info-row .lab{font-size:13px;color:var(--muted);font-weight:600}
.info-row .val{font-size:16.5px;font-weight:600;color:var(--ink);margin-top:2px;word-break:break-all}
.info-row .val a:hover{color:var(--terracotta-700)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:32px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field textarea{width:100%;font-family:inherit;font-size:15px;color:var(--ink);
  padding:12px 14px;border:1.5px solid var(--line-2);border-radius:var(--r-sm);background:var(--cream);
  transition:border-color .2s,box-shadow .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--terracotta);
  box-shadow:0 0 0 4px rgba(217,119,87,.14);background:#fff}
.field textarea{resize:vertical;min-height:120px}

/* —— 关于页 —— */
.lede{font-size:clamp(19px,2.4vw,25px);line-height:1.55;color:var(--ink);font-weight:600;letter-spacing:-.01em}
.prose p{color:var(--ink-2);font-size:16.5px;margin-top:18px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.timeline{position:relative;margin-top:10px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line-2)}
.tl-item{position:relative;padding:0 0 26px 14px}
.tl-item::before{content:"";position:absolute;left:-30px;top:5px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--terracotta)}
.tl-item .dt{font-size:13px;font-weight:700;color:var(--terracotta-700)}
.tl-item h4{font-size:17px;margin:3px 0 5px}
.tl-item p{font-size:14.5px;color:var(--ink-2)}
.info-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden}
.info-table th,.info-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.info-table th{width:38%;color:var(--muted);font-weight:600;background:var(--cream)}
.info-table td{color:var(--ink);font-weight:600}
.info-table tr:last-child th,.info-table tr:last-child td{border-bottom:0}

/* —— 页脚 —— */
.footer{background:var(--cream-2);border-top:1px solid var(--line);padding:58px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer .brand{margin-bottom:16px}
.footer .fdesc{color:var(--ink-2);font-size:14.5px;max-width:300px}
.footer h5{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px;letter-spacing:.02em}
.footer-col a,.footer-col p{display:block;color:var(--ink-2);font-size:14.5px;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--terracotta-700)}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;
  flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:center;text-align:center}
.footer-bottom,.footer-bottom a{color:var(--muted);font-size:13.5px;line-height:1.9}
.footer-bottom a{display:inline-flex;align-items:center;gap:6px}
.footer-bottom a:hover{color:var(--terracotta-700)}
.beian-badge{display:inline-flex;align-items:center;gap:7px}
.beian-badge img{width:18px;height:18px}

/* —— 进入动画（仅在 JS 可用时隐藏，保证无 JS / 异常时内容始终可见） —— */
.reveal{transition:opacity .7s ease,transform .7s ease}
.js .reveal{opacity:0;transform:translateY(22px)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* —— 响应式 —— */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:46px}
  .hero-visual{max-width:460px}
  .feature,.feature.flip{grid-template-columns:1fr;gap:30px}
  .feature.flip .feat-media{order:0}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cols-4,.stats{grid-template-columns:repeat(2,1fr)}
  .value-grid{grid-template-columns:1fr}
}
@media (max-width:820px){
  .nav-links,.nav-right .btn{display:none}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .section{padding:64px 0}
  .cols-3{grid-template-columns:1fr}
}
@media (max-width:540px){
  .cols-2,.cols-4,.stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-meta{gap:22px}
  .cta-band{padding:42px 26px}
  .info-table th{width:42%}
}