/* =========================================================
   慢成星河 · 企业官网  |  共享样式
   设计语言：暗夜星河 + 暖米底色 · 简约大气 · 留白克制
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root{
  --cream:    #F7F4ED;   /* 页面主底色（暖米） */
  --paper:    #FFFFFF;
  --paper-2:  #FCFAF5;
  --ink:      #23292B;   /* 主文字（墨） */
  --ink-soft: #5C6366;   /* 次级文字 */
  --ink-faint:#8B9194;   /* 弱化文字 */
  --night:    #14212A;   /* 暗夜主色 */
  --night-2:  #1E303A;   /* 暗夜次色 */
  --gold:     #C2A36B;   /* 星光金 */
  --gold-deep:#A1854B;
  --gold-soft:#E7D6A8;
  --sage:     #8A9A86;   /* 自然绿（康养点缀） */
  --line:     rgba(35,41,43,0.10);
  --line-d:   rgba(255,255,255,0.14);
  --maxw:     1180px;
  --radius:   14px;
  --serif: "Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --sans:  "Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --shadow: 0 18px 50px -28px rgba(20,33,42,0.45);
  --shadow-sm: 0 10px 30px -22px rgba(20,33,42,0.5);
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--cream);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.3;letter-spacing:.01em;}
::selection{background:var(--gold);color:#fff;}

/* ---------- 布局容器 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px;}
section{position:relative;}
.section{padding:120px 0;}
.section--tight{padding:88px 0;}

/* 区块小标题（眉题） */
.eyebrow{
  display:inline-block;
  font-size:13px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:600;margin-bottom:18px;
  position:relative;padding-left:42px;
}
.eyebrow::before{
  content:"";position:absolute;left:0;top:50%;width:30px;height:1px;
  background:var(--gold);transform:translateY(-50%);
}
.eyebrow--light{color:var(--gold-soft);}
.eyebrow--light::before{background:var(--gold-soft);}

/* 区块大标题 */
.section-title{
  font-size:clamp(26px,3.4vw,40px);color:var(--ink);margin-bottom:18px;
}
.section-sub{
  font-size:16px;color:var(--ink-soft);max-width:640px;
}
.lede{color:var(--ink-soft);max-width:680px;font-size:17px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:15px;font-weight:500;
  padding:14px 30px;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:all .3s ease;letter-spacing:.02em;
}
.btn svg{width:16px;height:16px;}
.btn--primary{background:var(--gold);color:#241c0c;}
.btn--primary:hover{background:var(--gold-deep);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(161,133,75,.8);}
.btn--ghost{border-color:rgba(35,41,43,.22);color:var(--ink);}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn--light{border-color:var(--line-d);color:#fff;}
.btn--light:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.btn--gold-line{border-color:var(--gold);color:var(--gold-deep);}
.btn--gold-line:hover{background:var(--gold);color:#241c0c;}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 0;transition:all .4s ease;
}
.nav .container{display:flex;align-items:center;justify-content:space-between;width:100%;}
.nav__brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:21px;font-weight:600;letter-spacing:.06em;color:#fff;transition:color .4s;}
.nav__brand img{width:34px;height:34px;}
.nav__links{display:flex;align-items:center;gap:38px;}
.nav__links a{font-size:15px;color:rgba(255,255,255,.82);position:relative;padding:4px 0;transition:color .3s;}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--gold);transition:width .3s;}
.nav__links a:hover,.nav__links a.active{color:#fff;}
.nav__links a:hover::after,.nav__links a.active::after{width:100%;}
.nav__cta{margin-left:8px;}

/* 滚动后变实底 */
.nav.scrolled{
  background:rgba(247,244,237,.92);backdrop-filter:blur(12px);
  padding:14px 0;box-shadow:0 1px 0 var(--line);
}
.nav.scrolled .nav__brand{color:var(--ink);}
.nav.scrolled .nav__links a{color:var(--ink-soft);}
.nav.scrolled .nav__links a:hover,.nav.scrolled .nav__links a.active{color:var(--ink);}

/* 移动端菜单按钮 */
.nav__toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:0;padding:8px;}
.nav__toggle span{width:24px;height:2px;background:#fff;transition:.3s;}
.nav.scrolled .nav__toggle span{background:var(--ink);}

/* ---------- 暗夜 Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:
    radial-gradient(1200px 700px at 78% 18%, rgba(194,163,107,.16), transparent 60%),
    radial-gradient(900px 600px at 12% 88%, rgba(138,154,134,.12), transparent 55%),
    linear-gradient(180deg,#0e1820 0%,#14212a 55%,#1a2a33 100%);
  color:#fff;overflow:hidden;
}
/* 星点背景（纯 CSS） */
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 20% 30%, rgba(255,255,255,.9), transparent),
    radial-gradient(1.4px 1.4px at 65% 22%, rgba(255,255,255,.7), transparent),
    radial-gradient(2px 2px at 82% 64%, rgba(231,214,168,.95), transparent),
    radial-gradient(1.3px 1.3px at 40% 72%, rgba(255,255,255,.6), transparent),
    radial-gradient(1.5px 1.5px at 12% 60%, rgba(255,255,255,.7), transparent),
    radial-gradient(1.2px 1.2px at 90% 35%, rgba(255,255,255,.55), transparent),
    radial-gradient(1.7px 1.7px at 52% 12%, rgba(255,255,255,.8), transparent),
    radial-gradient(1.2px 1.2px at 30% 88%, rgba(255,255,255,.5), transparent);
  background-repeat:no-repeat;opacity:.85;
  animation:twinkle 6s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.55;}to{opacity:.95;}}
.hero__inner{position:relative;z-index:2;padding:140px 0 90px;width:100%;}
.hero__eyebrow{color:var(--gold-soft);letter-spacing:.34em;font-size:13px;text-transform:uppercase;margin-bottom:26px;font-weight:600;}
.hero h1{
  font-size:clamp(38px,6.4vw,74px);line-height:1.12;font-weight:600;
  letter-spacing:.02em;margin-bottom:24px;color:#fff;
}
.hero h1 .accent{color:var(--gold-soft);font-style:normal;}
.hero__claims{
  display:flex;flex-wrap:wrap;gap:14px 26px;margin:30px 0 38px;
  font-size:16px;color:rgba(255,255,255,.86);
}
.hero__claims span{display:inline-flex;align-items:center;gap:10px;}
.hero__claims span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);}
.hero__sub{max-width:560px;color:rgba(255,255,255,.78);font-size:17px;margin-bottom:42px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:16px;}
.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.6);font-size:12px;letter-spacing:.3em;text-align:center;}
.scroll-hint .line{width:1px;height:42px;margin:10px auto 0;background:linear-gradient(var(--gold),transparent);animation:drop 2s ease-in-out infinite;}
@keyframes drop{0%,100%{opacity:.3;transform:scaleY(.6);}50%{opacity:1;transform:scaleY(1);}}

/* 内页 Hero（较矮） */
.hero--inner{min-height:62vh;}
.hero--inner .hero__inner{padding:150px 0 70px;}

/* ---------- 通用栅格 ---------- */
.grid{display:grid;gap:28px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-5{grid-template-columns:repeat(5,1fr);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 32px;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent;}
.card__num{font-family:var(--serif);font-size:15px;color:var(--gold-deep);letter-spacing:.1em;margin-bottom:14px;display:block;}
.card h3{font-size:21px;margin-bottom:12px;color:var(--ink);}
.card p{color:var(--ink-soft);font-size:15px;}
.card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.card .tags span{font-size:12.5px;color:var(--ink-soft);background:var(--paper-2);border:1px solid var(--line);padding:5px 12px;border-radius:999px;}

/* 暗底卡片（用于全龄三段式） */
.card--dark{background:linear-gradient(160deg,var(--night-2),var(--night));border-color:transparent;color:#fff;}
.card--dark h3{color:#fff;}
.card--dark p{color:rgba(255,255,255,.74);}
.card--dark .tags span{background:rgba(255,255,255,.06);border-color:var(--line-d);color:rgba(255,255,255,.8);}

/* ---------- 核心主张（首页 4 象限） ---------- */
.pillars{background:var(--paper-2);}
.pillar{text-align:left;}
.pillar__icon{width:46px;height:46px;color:var(--gold);margin-bottom:18px;}
.pillar h3{font-size:20px;margin-bottom:10px;}
.pillar p{color:var(--ink-soft);font-size:15px;}

/* ---------- 商业闭环（五步流） ---------- */
.loop{background:linear-gradient(180deg,var(--night) 0%,#102029 100%);color:#fff;}
.loop .eyebrow--light{padding-left:42px;}
.loop .section-title{color:#fff;}
.loop .section-sub{color:rgba(255,255,255,.7);}
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:54px;position:relative;}
.flow__step{padding:0 18px;position:relative;text-align:center;}
.flow__step:not(:last-child)::after{
  content:"";position:absolute;top:26px;right:-50%;width:100%;height:1px;
  background:linear-gradient(90deg,var(--gold),transparent);
}
.flow__dot{
  width:54px;height:54px;border-radius:50%;margin:0 auto 20px;
  background:rgba(194,163,107,.12);border:1px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:20px;color:var(--gold-soft);position:relative;z-index:2;
}
.flow__step h4{font-size:17px;color:#fff;margin-bottom:8px;font-weight:600;}
.flow__step p{font-size:13.5px;color:rgba(255,255,255,.66);}
.flow__arrow{display:none;}

/* ---------- 引用 / 金句 ---------- */
.quote{background:var(--night);color:#fff;text-align:center;padding:130px 0;}
.quote blockquote{font-family:var(--serif);font-size:clamp(26px,3.6vw,42px);line-height:1.5;max-width:880px;margin:0 auto;color:#fff;letter-spacing:.02em;}
.quote .mark{color:var(--gold-soft);font-size:60px;line-height:0;display:block;margin-bottom:14px;font-family:var(--serif);}
.quote cite{display:block;margin-top:30px;font-style:normal;font-size:14px;letter-spacing:.3em;color:var(--gold-soft);text-transform:uppercase;}

/* ---------- 关于我们 ---------- */
.about-hero-statement{font-family:var(--serif);font-size:clamp(22px,3vw,34px);line-height:1.6;color:var(--ink);max-width:860px;}
.about-hero-statement .accent{color:var(--gold-deep);}
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.split__media{
  aspect-ratio:4/5;border-radius:var(--radius);position:relative;overflow:hidden;
  background:
    radial-gradient(600px 400px at 70% 20%, rgba(194,163,107,.25), transparent 60%),
    linear-gradient(160deg,#1a2a33,#0e1820);
}
.split__media .stars{position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 30% 30%, #fff, transparent),
    radial-gradient(2px 2px at 70% 60%, var(--gold-soft), transparent),
    radial-gradient(1.4px 1.4px at 50% 80%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 85% 35%, #fff, transparent);
  background-repeat:no-repeat;opacity:.9;
}
.split__media .caption{position:absolute;left:26px;bottom:24px;color:rgba(255,255,255,.85);font-size:14px;letter-spacing:.2em;}

.value-list{display:grid;gap:0;margin-top:40px;}
.value-list li{display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line);}
.value-list li:last-child{border-bottom:1px solid var(--line);}
.value-list .v-num{font-family:var(--serif);color:var(--gold-deep);font-size:18px;min-width:36px;}
.value-list h4{font-size:18px;margin-bottom:4px;}
.value-list p{color:var(--ink-soft);font-size:15px;}

/* 商标护城河 */
.trademark{background:var(--paper-2);}
.tm-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.35s;}
.tm-item:hover{box-shadow:var(--shadow-sm);transform:translateY(-4px);}
.tm-item .cls{font-family:var(--serif);font-size:30px;color:var(--gold);line-height:1;}
.tm-item .cls small{font-size:13px;color:var(--ink-faint);display:block;margin-top:6px;letter-spacing:.1em;}
.tm-item h4{font-size:17px;margin:14px 0 8px;}
.tm-item p{font-size:14px;color:var(--ink-soft);}

/* ---------- 产品服务 ---------- */
.svc-block{display:grid;grid-template-columns:0.9fr 1.1fr;gap:56px;align-items:start;padding:60px 0;border-top:1px solid var(--line);}
.svc-block:first-of-type{border-top:0;}
.svc-block__head .kicker{font-family:var(--serif);color:var(--gold-deep);font-size:14px;letter-spacing:.2em;margin-bottom:12px;display:block;}
.svc-block__head h3{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.svc-block__head p{color:var(--ink-soft);}
.svc-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.svc-list .item{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px;transition:.3s;}
.svc-list .item:hover{border-color:var(--gold);box-shadow:var(--shadow-sm);}
.svc-list .item h5{font-size:16px;font-family:var(--serif);margin-bottom:6px;color:var(--ink);}
.svc-list .item p{font-size:13.5px;color:var(--ink-soft);}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start;}
.info-item{display:flex;gap:18px;padding:22px 0;border-top:1px solid var(--line);}
.info-item:first-child{border-top:0;}
.info-item .ic{width:42px;height:42px;flex:0 0 42px;border-radius:50%;background:var(--paper);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--gold-deep);}
.info-item h5{font-size:15px;color:var(--ink-faint);font-weight:500;margin-bottom:4px;letter-spacing:.04em;}
.info-item p{font-size:16px;color:var(--ink);}

.form{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-sm);}
.field{margin-bottom:22px;}
.field label{display:block;font-size:14px;color:var(--ink-soft);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--sans);font-size:15px;color:var(--ink);
  background:var(--paper-2);border:1px solid var(--line);border-radius:10px;
  padding:13px 16px;transition:border-color .25s,background .25s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);background:#fff;}
.field textarea{resize:vertical;min-height:120px;}
.field.row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:0;}
.form__msg{margin-top:18px;font-size:14px;color:var(--sage);display:none;}
.form__msg.show{display:block;}

.map-box{margin-top:48px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:linear-gradient(160deg,#e9e3d6,#dfe6df);height:300px;position:relative;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);}
.map-box .pin{width:18px;height:18px;border-radius:50% 50% 50% 0;background:var(--gold);transform:rotate(-45deg);box-shadow:0 0 0 6px rgba(194,163,107,.25);}

/* ---------- 页脚 ---------- */
.footer{background:var(--night);color:rgba(255,255,255,.72);padding:72px 0 34px;}
.footer__top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-d);}
.footer__brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:22px;color:#fff;margin-bottom:18px;}
.footer__brand img{width:32px;height:32px;}
.footer p{font-size:14.5px;color:rgba(255,255,255,.62);max-width:300px;}
.footer h6{font-size:14px;color:#fff;letter-spacing:.12em;margin-bottom:18px;font-weight:600;}
.footer__col a{display:block;font-size:14.5px;color:rgba(255,255,255,.66);padding:7px 0;transition:color .25s;}
.footer__col a:hover{color:var(--gold-soft);}
.footer__bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;padding-top:26px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.04em;}

/* ---------- 滚动揭示动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease;}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.08s;}
.reveal.d2{transition-delay:.16s;}
.reveal.d3{transition-delay:.24s;}
.reveal.d4{transition-delay:.32s;}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}.hero::before{animation:none;}}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .grid-4,.grid-5{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:1fr;gap:30px;}
  .flow__step:not(:last-child)::after{display:none;}
  .flow__step{padding:0;text-align:left;display:flex;gap:18px;align-items:flex-start;}
  .flow__dot{margin:0;flex:0 0 54px;}
  .split,.contact-grid,.svc-block{grid-template-columns:1fr;gap:34px;}
  .footer__top{grid-template-columns:1fr 1fr;}
}
@media (max-width:680px){
  .section{padding:80px 0;}
  .grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr;}
  .nav__links{
    position:fixed;top:0;right:0;height:100vh;width:74%;max-width:320px;
    background:var(--night);flex-direction:column;justify-content:center;gap:26px;
    transform:translateX(100%);transition:transform .4s ease;padding:40px;
  }
  .nav__links.open{transform:translateX(0);}
  .nav__links a{color:#fff;font-size:18px;}
  .nav__cta{display:none;}
  .nav__toggle{display:flex;z-index:101;}
  .svc-list{grid-template-columns:1fr;}
  .field.row{grid-template-columns:1fr;}
  .form{padding:28px 22px;}
  .footer__top{grid-template-columns:1fr;}
}