/* ============================================================
   流樱信息 · 官网设计系统
   方向：轻奢雅致 × 政务深蓝 —— 宋体大标题、克制金色、档案编号质感
   展示字：Noto Serif SC / 正文：Noto Sans SC
   主站强调色：金；子品牌各自单一强调色（body[data-brand] 覆盖）
   ============================================================ */

:root{
  /* 墨色阶梯（暖调近黑，不用纯黑） */
  --ink-950:#050D20;
  --ink-900:#081733;
  --ink-800:#0B1F3F;
  --ink-700:#12294D;
  --ink-600:#1B3A6B;

  /* 纸面 */
  --paper:#F7F5F0;
  --paper-2:#FFFFFF;

  /* 文本 */
  --text:#1A2332;
  --text-sub:#5A6B82;
  --text-faint:#8A99B0;
  --line:#E3E9F2;

  /* 主站品牌色：金 */
  --accent:#C9A15C;
  --accent-deep:#A67C3D;
  --accent-soft:rgba(198,161,92,.12);
  --on-accent:#081733;

  /* 字阶（1.25 模块化比例） */
  --fs-hero:clamp(34px,5.2vw,64px);
  --fs-h2:clamp(26px,3.2vw,38px);
  --fs-h3:20px;
  --fs-body:15px;
  --fs-small:13px;

  --font-display:'Noto Serif SC','Songti SC',serif;
  --font-body:'Noto Sans SC',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;

  /* 间距梯度 */
  --space-1:4px; --space-2:8px; --space-3:16px; --space-4:24px;
  --space-5:40px; --space-6:64px; --space-7:96px;

  --radius-sm:4px; --radius-md:10px; --radius-lg:20px;

  /* 三级阴影（带环境色，非纯黑） */
  --shadow-1:0 2px 8px rgba(8,23,51,.10);
  --shadow-2:0 8px 28px rgba(8,23,51,.14);
  --shadow-3:0 24px 64px rgba(8,23,51,.28);

  --ease-out:cubic-bezier(0.16,1,0.3,1);
  --dur-fast:160ms; --dur-base:320ms; --dur-slow:680ms;

  --nav-h:72px;
}

/* 子品牌强调色：单页仅一个强调色 */
body[data-brand="zhengshi"]{ --accent:#2DD4BF; --accent-deep:#14B8A6; --accent-soft:rgba(45,212,191,.12); }
body[data-brand="yuliao"]  { --accent:#60A5FA; --accent-deep:#3B82F6; --accent-soft:rgba(59,130,246,.12); }
body[data-brand="xinyuan"] { --accent:#A78BFA; --accent-deep:#7C6FF0; --accent-soft:rgba(139,124,246,.12); }
body[data-brand="peixun"]  { --accent:#F0B25C; --accent-deep:#D98E2B; --accent-soft:rgba(232,145,61,.12); }

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  font-family:var(--font-body);
  font-size:var(--fs-body);
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--text);
  background:var(--paper-2);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg{display:block}
::selection{background:var(--accent);color:var(--on-accent)}
:focus-visible{outline:2px solid var(--accent-deep);outline-offset:2px;border-radius:2px}

.container{max-width:1240px;margin:0 auto;padding:0 32px}
section{padding:var(--space-7) 0}

/* ---------- 氛围层：颗粒 ---------- */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:60;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  background:linear-gradient(180deg,rgba(5,13,32,.92),rgba(5,13,32,.72));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(247,245,240,.08);
}
.nav-inner{max-width:1240px;margin:0 auto;padding:0 32px;height:100%;
  display:flex;justify-content:space-between;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:#F7F5F0;font-family:var(--font-display);
  font-weight:700;font-size:17px;letter-spacing:3px;min-height:44px}
.brand small{display:block;font-family:var(--font-body);font-weight:400;font-size:10px;
  letter-spacing:2px;color:rgba(247,245,240,.5)}
.brand-mark{width:34px;height:34px;flex-shrink:0;color:var(--accent)}
.nav-links{display:flex;gap:34px}
.nav-links a{font-size:14px;color:rgba(247,245,240,.72);padding:10px 0;position:relative;
  transition:color var(--dur-fast) ease-out;min-height:44px;display:inline-flex;align-items:center}
.nav-links a::after{content:"";position:absolute;left:0;bottom:6px;height:1px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur-base) var(--ease-out)}
.nav-links a:hover{color:#F7F5F0}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{display:inline-flex;align-items:center;min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  border:1px solid rgba(247,245,240,.32);color:#F7F5F0;font-size:14px;letter-spacing:1px;
  transition:all var(--dur-fast) ease-out}
.nav-cta:hover{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.nav-back{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(247,245,240,.72);
  letter-spacing:1px;min-height:44px;transition:color var(--dur-fast) ease-out}
.nav-back:hover{color:var(--accent)}
.nav-back svg{width:16px;height:16px}
@media(max-width:920px){.nav-links{display:none}}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;color:#F7F5F0;
  padding:calc(var(--nav-h) + 88px) 0 110px;
  background:
    radial-gradient(58% 46% at 82% 12%,var(--accent-soft),transparent 62%),
    radial-gradient(46% 40% at 12% 88%,rgba(59,130,246,.10),transparent 60%),
    linear-gradient(158deg,var(--ink-950) 0%,var(--ink-900) 46%,var(--ink-700) 100%);
}
/* 政务档案网格：低透明度发丝线 */
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(247,245,240,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(247,245,240,.032) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(78% 68% at 50% 38%,#000 18%,transparent 82%);
  -webkit-mask-image:radial-gradient(78% 68% at 50% 38%,#000 18%,transparent 82%);}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:12.5px;color:var(--accent);
  letter-spacing:4px;font-weight:500;margin-bottom:26px}
.hero-eyebrow::before{content:"";width:32px;height:1px;background:var(--accent)}
.hero h1{
  font-family:var(--font-display);font-weight:900;
  font-size:var(--fs-hero);line-height:1.18;letter-spacing:.01em;
  margin-bottom:22px;color:#F7F5F0;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:16px;color:rgba(247,245,240,.86);font-weight:500;letter-spacing:2px;margin-bottom:18px}
.hero-desc{font-size:14.5px;color:rgba(247,245,240,.6);line-height:1.95;max-width:520px;margin-bottom:38px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}

.btn-primary{display:inline-flex;align-items:center;min-height:48px;padding:0 30px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:var(--on-accent);
  font-size:14.5px;font-weight:600;letter-spacing:1px;
  box-shadow:0 4px 20px var(--accent-soft);
  transition:transform var(--dur-fast) ease-out,box-shadow var(--dur-fast) ease-out}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px var(--accent-soft)}
.btn-ghost{display:inline-flex;align-items:center;min-height:48px;padding:0 30px;border-radius:var(--radius-sm);
  border:1px solid rgba(247,245,240,.26);color:#F7F5F0;font-size:14.5px;letter-spacing:1px;
  transition:all var(--dur-fast) ease-out}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* 竖排装饰字：政务卷轴感 */
.hero-vertical{position:absolute;right:26px;top:50%;transform:translateY(-50%);
  writing-mode:vertical-rl;font-family:var(--font-display);font-size:13px;letter-spacing:10px;
  color:rgba(247,245,240,.18);user-select:none;pointer-events:none}
@media(max-width:1280px){.hero-vertical{display:none}}

/* 首屏右侧面板：档案卡 */
.dossier{
  background:linear-gradient(160deg,rgba(247,245,240,.08),rgba(247,245,240,.03));
  border:1px solid rgba(247,245,240,.15);border-radius:var(--radius-md);overflow:hidden;
  box-shadow:var(--shadow-3),inset 0 1px 0 rgba(247,245,240,.1);
  backdrop-filter:blur(10px);
}
.dossier-bar{padding:14px 20px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid rgba(247,245,240,.1)}
.dossier-title{font-size:13px;color:#F7F5F0;font-weight:500;display:flex;align-items:center;gap:9px;letter-spacing:1px}
.dossier-title::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px}
.dossier-no{font-size:11px;color:rgba(247,245,240,.42);letter-spacing:2px;font-variant-numeric:tabular-nums}
.dossier-body{padding:10px 20px 18px}
.dossier-row{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 0;border-bottom:1px dashed rgba(247,245,240,.12)}
.dossier-row:last-child{border-bottom:none}
.dossier-row .dr-name{font-family:var(--font-display);font-size:16px;color:#F7F5F0;letter-spacing:2px}
.dossier-row .dr-tag{font-size:11.5px;color:rgba(247,245,240,.5);letter-spacing:1px;margin-top:3px}
.dossier-row .dr-num{font-size:12px;color:var(--accent);letter-spacing:2px;font-variant-numeric:tabular-nums;white-space:nowrap}
.dossier-foot{padding:12px 20px;border-top:1px solid rgba(247,245,240,.1);
  font-size:11px;color:rgba(247,245,240,.4);text-align:right;letter-spacing:1px}
@media(max-width:1000px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero{padding-bottom:88px}
}

/* ---------- 通用区块头 ---------- */
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-eyebrow{display:inline-block;font-size:12px;color:var(--accent-deep);font-weight:600;
  letter-spacing:4px;margin-bottom:16px}
.section-head h2{font-family:var(--font-display);font-size:var(--fs-h2);font-weight:700;
  letter-spacing:2px;color:var(--ink-800);margin-bottom:16px;line-height:1.3}
.section-head p{color:var(--text-sub);font-size:15px}
.on-dark .section-head h2,.on-dark h2{color:#F7F5F0}
.on-dark .section-head p{color:rgba(247,245,240,.62)}
.on-dark .section-eyebrow{color:var(--accent)}

/* ---------- 业务矩阵（主站记忆点：非对称档案格） ---------- */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.matrix-card{
  position:relative;display:flex;flex-direction:column;min-height:280px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:34px 30px;overflow:hidden;
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out),border-color var(--dur-base) var(--ease-out);
}
.matrix-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2);border-color:var(--mc,#C9A15C)}
/* 顶部品牌发丝线 */
.matrix-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--mc,#C9A15C),transparent 85%)}
.matrix-card .m-num{font-size:12px;letter-spacing:3px;color:var(--mc,#A67C3D);
  font-variant-numeric:tabular-nums;margin-bottom:20px}
.matrix-card h3{font-family:var(--font-display);font-size:24px;font-weight:700;
  color:var(--ink-800);letter-spacing:2px;margin-bottom:6px}
.matrix-card .m-en{font-size:11px;letter-spacing:3px;color:var(--text-faint);margin-bottom:16px}
.matrix-card p{font-size:13.5px;color:var(--text-sub);line-height:1.85;flex:1}
.matrix-card .m-go{display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  font-size:13.5px;color:var(--ink-800);font-weight:500;letter-spacing:1px}
.matrix-card .m-go svg{width:16px;height:16px;transition:transform var(--dur-fast) var(--ease-out)}
.matrix-card:hover .m-go{color:var(--mc,#A67C3D)}
.matrix-card:hover .m-go svg{transform:translateX(4px)}
/* 非对称排布：首卡横贯 7 列，次卡 5 列，后两卡各 6 列 */
.matrix-card:nth-child(1){grid-column:span 7;--mc:#2DD4BF}
.matrix-card:nth-child(2){grid-column:span 5;--mc:#3B82F6}
.matrix-card:nth-child(3){grid-column:span 5;--mc:#8B7CF6}
.matrix-card:nth-child(4){grid-column:span 7;--mc:#E8913D}
@media(max-width:860px){.matrix-card{grid-column:span 12 !important;min-height:0}}

/* ---------- 价值卡（纸面 + 编号） ---------- */
.value-bg{background:linear-gradient(180deg,var(--paper-2) 0%,var(--paper) 100%)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.value-card{position:relative;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:36px 30px;
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out)}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.value-card .vk{font-size:11.5px;color:var(--accent-deep);font-weight:600;letter-spacing:3px;margin-bottom:16px}
.value-card h3{font-family:var(--font-display);font-size:19px;font-weight:700;
  color:var(--ink-800);margin-bottom:10px;letter-spacing:1px}
.value-card p{font-size:13.5px;color:var(--text-sub);line-height:1.85}
@media(max-width:900px){.value-grid{grid-template-columns:1fr}}

/* ---------- 深色方法论带 ---------- */
.band{background:linear-gradient(170deg,var(--ink-900),var(--ink-700));color:#F7F5F0;
  position:relative;overflow:hidden}
.band::before{content:"";position:absolute;inset:0;
  background:radial-gradient(52% 60% at 88% 8%,var(--accent-soft),transparent 60%)}
.band .container{position:relative}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(247,245,240,.09);border:1px solid rgba(247,245,240,.09);
  border-radius:var(--radius-md);overflow:hidden}
.band-cell{background:var(--ink-800);padding:32px 26px;transition:background var(--dur-fast) ease-out}
.band-cell:hover{background:var(--ink-700)}
.band-cell .bc-num{font-size:11.5px;color:var(--accent);font-weight:600;letter-spacing:3px;
  margin-bottom:14px;font-variant-numeric:tabular-nums}
.band-cell h3{font-family:var(--font-display);font-size:16.5px;font-weight:700;color:#F7F5F0;
  margin-bottom:9px;letter-spacing:1px}
.band-cell p{font-size:12.5px;color:rgba(247,245,240,.56);line-height:1.8}
@media(max-width:1000px){.band-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.band-grid{grid-template-columns:1fr}}

/* ---------- 关于 / 双栏 ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.about-grid h3{font-family:var(--font-display);font-size:21px;color:var(--ink-800);
  margin-bottom:16px;letter-spacing:1px}
.about-grid p{font-size:14px;color:var(--text-sub);line-height:1.95;margin-bottom:14px}
.info-table{width:100%;border-collapse:collapse;font-size:13px;background:var(--paper-2)}
.info-table th,.info-table td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.info-table th{background:var(--ink-800);color:#F7F5F0;font-weight:500;letter-spacing:1px;width:42%}
@media(max-width:900px){.about-grid{grid-template-columns:1fr}}

/* ---------- 服务条目（子站） ---------- */
.svc{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.svc-card{display:flex;gap:22px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:32px;transition:border-color var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out)}
.svc-card:hover{border-color:var(--accent-deep);box-shadow:var(--shadow-1)}
.svc-icon{flex-shrink:0;width:46px;height:46px;border-radius:var(--radius-md);
  background:var(--ink-800);color:var(--accent);display:flex;align-items:center;justify-content:center}
.svc-icon svg{width:21px;height:21px}
.svc-card h3{font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--ink-800);
  margin-bottom:7px;letter-spacing:1px}
.svc-card .s-tag{font-size:12px;color:var(--accent-deep);font-weight:600;letter-spacing:2px;margin-bottom:7px}
.svc-card p{font-size:13.5px;color:var(--text-sub);line-height:1.85}
@media(max-width:820px){.svc{grid-template-columns:1fr}.svc-card{flex-direction:column}}

/* 流程步 */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{position:relative;padding:26px 22px;border:1px solid rgba(247,245,240,.12);
  border-radius:var(--radius-md);background:rgba(247,245,240,.03)}
.step::before{counter-increment:step;content:"0" counter(step);
  font-family:var(--font-display);font-size:30px;color:var(--accent);display:block;margin-bottom:12px}
.step h3{font-size:15px;color:#F7F5F0;margin-bottom:8px;letter-spacing:1px}
.step p{font-size:12.5px;color:rgba(247,245,240,.56);line-height:1.8}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* ---------- CTA ---------- */
.cta{
  position:relative;text-align:center;color:#F7F5F0;padding:96px 32px;overflow:hidden;
  background:radial-gradient(60% 80% at 50% 110%,var(--accent-soft),transparent 62%),
    linear-gradient(135deg,var(--ink-950),var(--ink-700));
}
.cta h2{font-family:var(--font-display);font-size:clamp(24px,3vw,32px);color:#F7F5F0;
  margin-bottom:18px;letter-spacing:2px;font-weight:700}
.cta p{color:rgba(247,245,240,.66);font-size:15px;margin-bottom:12px;max-width:640px;margin-inline:auto}
.cta .btn-light{display:inline-flex;align-items:center;min-height:48px;margin-top:28px;padding:0 40px;
  border-radius:var(--radius-sm);background:#F7F5F0;color:var(--ink-800);font-weight:600;
  font-size:15px;letter-spacing:1px;transition:transform var(--dur-fast) ease-out,box-shadow var(--dur-fast) ease-out}
.cta .btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.3)}

/* ---------- 页脚 ---------- */
footer{background:var(--ink-950);color:rgba(247,245,240,.5);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);
  font-size:19px;color:#F7F5F0;font-weight:700;letter-spacing:3px;margin-bottom:14px}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-desc{font-size:13px;line-height:1.85;max-width:340px}
.footer-col h4{color:rgba(247,245,240,.9);font-size:13.5px;margin-bottom:16px;font-weight:500;letter-spacing:1px}
.footer-col ul{display:flex;flex-direction:column;gap:2px}
.footer-col a{display:inline-flex;align-items:center;min-height:32px;font-size:13px;transition:color var(--dur-fast) ease-out}
.footer-col a:hover{color:var(--accent)}
.footer-compliance{font-size:12px;color:rgba(247,245,240,.4);line-height:2;
  border-top:1px solid rgba(247,245,240,.08);padding-top:22px;margin-bottom:18px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:12.5px;color:rgba(247,245,240,.35)}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}

/* ---------- 子站面包屑 ---------- */
.crumb{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
  color:rgba(247,245,240,.5);margin-bottom:22px}
.crumb a{color:rgba(247,245,240,.72);transition:color var(--dur-fast) ease-out}
.crumb a:hover{color:var(--accent)}
.crumb svg{width:12px;height:12px;opacity:.5}

/* ---------- 入场序列（一次编排，错峰 90ms） ---------- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(24px);
    transition:opacity var(--dur-slow) var(--ease-out),transform var(--dur-slow) var(--ease-out)}
  .reveal.in{opacity:1;transform:none}
  .reveal[data-d="1"]{transition-delay:90ms}
  .reveal[data-d="2"]{transition-delay:180ms}
  .reveal[data-d="3"]{transition-delay:270ms}
  .reveal[data-d="4"]{transition-delay:360ms}
  .reveal[data-d="5"]{transition-delay:450ms}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none !important}
  html{scroll-behavior:auto}
}