/* =========================================================================
   孚策 · qsdzk.com 企业官网 设计系统
   主题：谦·升·鼎 三卦体系 + 金色主色 + 中性灰
   适配：桌面 / 平板 / 移动端
   ========================================================================= */

:root{
  /* —— 谦·升·鼎 三卦主色 —— */
  --qian-qing: #0F3A3A;     /* 谦青  深墨青 */
  --qian-qing-2: #1B5454;   /* 谦青-2 */
  --sheng-zhe: #A6532B;     /* 升赭  赭石 */
  --sheng-zhe-2: #C26838;   /* 升赭-2 */
  --ding-chi: #9E2B25;      /* 鼎赤  朱红 */
  --ding-chi-2: #C03A33;    /* 鼎赤-2 */

  /* —— 金色主调（呼应"鼎"） —— */
  --gold-50:  #FBF6E8;
  --gold-100: #F4E9C5;
  --gold-200: #E8D493;
  --gold-300: #D4B964;
  --gold-400: #C19A3E;
  --gold-500: #A57C2A;      /* 主金 */
  --gold-600: #8A6420;
  --gold-700: #6B4D18;
  --gold-glow: linear-gradient(135deg,#E8D493 0%,#C19A3E 45%,#8A6420 100%);

  /* —— 中性灰 —— */
  --ink-900: #14110D;
  --ink-800: #2A241B;
  --ink-700: #443C30;
  --ink-600: #6B6358;
  --ink-500: #8B8478;
  --ink-400: #B5B0A6;
  --ink-300: #D6D2C9;
  --ink-200: #E8E5DD;
  --ink-100: #F2EFE8;
  --ink-50:  #FAF8F3;
  --paper:   #FCFAF4;       /* 浅米色纸面 */

  /* —— 功能色 —— */
  --ok: #2F8F4F;
  --warn: #D9893A;
  --danger: #C53A2E;

  /* —— 阴影 / 圆角 / 边线 —— */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --shadow-1: 0 1px 2px rgba(20,17,13,.04), 0 2px 8px rgba(20,17,13,.04);
  --shadow-2: 0 4px 12px rgba(20,17,13,.06), 0 12px 32px rgba(20,17,13,.08);
  --shadow-3: 0 8px 24px rgba(20,17,13,.10), 0 24px 64px rgba(20,17,13,.14);
  --hair: 1px solid var(--ink-200);
  --hair-strong: 1px solid var(--ink-300);

  /* —— 字体栈 —— */
  --ff-serif: "Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --ff-sans:  -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
  --ff-mono:  "JetBrains Mono","SF Mono",Consolas,Menlo,monospace;

  /* —— 布局 —— */
  --container: 1240px;
  --container-narrow: 960px;
  --gutter: 24px;

  /* —— 节奏 —— */
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--ff-sans);
  color:var(--ink-800);
  background:var(--paper);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:var(--gold-200);color:var(--ink-900)}

/* —— 排版基础 —— */
h1,h2,h3,h4,h5{font-family:var(--ff-serif);color:var(--ink-900);line-height:1.3;font-weight:600}
h1{font-size:clamp(34px,4.6vw,56px);letter-spacing:-.5px}
h2{font-size:clamp(26px,2.8vw,38px);letter-spacing:-.3px}
h3{font-size:clamp(20px,1.8vw,24px)}
h4{font-size:18px}
p{color:var(--ink-700)}
.lead{font-size:17px;color:var(--ink-600);line-height:1.85}

/* —— 容器 —— */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.container-narrow{max-width:var(--container-narrow);margin:0 auto;padding:0 var(--gutter)}

/* —— 通用元素 —— */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--gold-600);
  font-weight:600;text-transform:uppercase;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--gold-500)}

.section{padding:96px 0;position:relative}
.section-tight{padding:64px 0}
.section-divider{height:1px;background:linear-gradient(90deg,transparent,var(--ink-200) 30%,var(--ink-200) 70%,transparent)}

.gold-text{
  background:var(--gold-glow);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  font-weight:600;font-size:14px;letter-spacing:.5px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s;
  white-space:nowrap;
}
.btn-primary{
  background:var(--gold-glow);color:#fff;
  box-shadow:0 4px 12px rgba(138,100,32,.25);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(138,100,32,.35)}
.btn-ghost{
  background:transparent;color:var(--ink-800);
  border:1px solid var(--ink-300);
}
.btn-ghost:hover{border-color:var(--gold-500);color:var(--gold-700)}
.btn-sm{padding:8px 16px;font-size:13px}

.tag{
  display:inline-block;padding:3px 10px;
  font-size:12px;border-radius:999px;
  background:var(--ink-100);color:var(--ink-700);
}
.tag-gold{background:var(--gold-100);color:var(--gold-700)}
.tag-qing{background:rgba(15,58,58,.08);color:var(--qian-qing)}
.tag-zhe{background:rgba(166,83,43,.08);color:var(--sheng-zhe)}
.tag-chi{background:rgba(158,43,37,.08);color:var(--ding-chi)}
.tag-ok{background:rgba(47,143,79,.10);color:var(--ok)}
.tag-warn{background:rgba(217,137,58,.12);color:var(--warn)}
.tag-danger{background:rgba(197,58,46,.10);color:var(--danger)}

.card{
  background:#fff;border-radius:var(--r-lg);
  border:var(--hair);
  box-shadow:var(--shadow-1);
  padding:24px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--ink-300)}

/* —— 顶部导航 —— */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(252,250,244,.85);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--ink-200);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:86px;
  max-width:1600px;
  margin:0 auto;
  padding:0 48px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:8px;
  background:#1f6b4a;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--ff-serif);font-weight:700;font-size:18px;
  box-shadow:0 2px 8px rgba(31,107,74,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--ff-serif);font-weight:700;font-size:17px;color:var(--ink-900);letter-spacing:1px}
.brand-sub{font-size:10.5px;color:var(--ink-500);letter-spacing:2px}
.brand-logo{height:42px;width:auto;max-width:none;display:block;flex-shrink:0}
.nav-menu{display:flex;align-items:center;gap:12px;list-style:none;margin-left:auto;flex-shrink:0}
.nav-menu a{
  display:inline-block;padding:8px 14px;border-radius:8px;
  color:var(--ink-700);font-size:14px;font-weight:500;
  white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav-menu a:hover{color:var(--gold-700);background:var(--ink-50)}
.nav-menu a.active{color:var(--gold-700);background:var(--gold-50)}
.nav-cta{display:flex;align-items:center;gap:8px}
.nav-toggle{display:none;width:36px;height:36px;border-radius:8px;border:var(--hair);background:#fff;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-800);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-800)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* —— Hero —— */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(212,185,100,.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(15,58,58,.10), transparent 60%),
    var(--paper);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(20,17,13,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(20,17,13,.04) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  padding:120px 0 80px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;
}
.hero h1{margin:18px 0 22px}
.hero h1 .display{font-size:clamp(40px,5.4vw,68px);display:block;line-height:1.1;letter-spacing:-1.2px}
.hero-sub{font-size:18px;color:var(--ink-600);max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:16px;margin-top:48px;padding-top:32px;
  border-top:1px solid var(--ink-200);
}
.hero-stat .num{font-family:var(--ff-serif);font-size:32px;font-weight:600;color:var(--ink-900);line-height:1}
.hero-stat .num .unit{font-size:18px;color:var(--gold-600);margin-left:2px}
.hero-stat .lbl{font-size:12.5px;color:var(--ink-500);margin-top:6px;letter-spacing:.5px}

/* —— 工作台示意卡 —— */
.workbench{
  position:relative;
  background:#fff;border-radius:20px;
  border:1px solid var(--ink-200);
  box-shadow:var(--shadow-3);
  overflow:hidden;
  transform:rotate(.5deg);
}
.workbench-head{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;background:var(--ink-50);
  border-bottom:1px solid var(--ink-200);
}
.workbench-head .dot{width:10px;height:10px;border-radius:50%;background:var(--ink-300)}
.workbench-head .dot:nth-child(1){background:#E8635B}
.workbench-head .dot:nth-child(2){background:#F4BE4F}
.workbench-head .dot:nth-child(3){background:#61C354}
.workbench-head .url{flex:1;text-align:center;font-size:12px;color:var(--ink-500);font-family:var(--ff-mono)}
.workbench-body{padding:20px}
.wb-row{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.wb-mode{display:flex;gap:6px}
.wb-mode span{padding:4px 10px;font-size:11.5px;border-radius:999px;background:var(--ink-100);color:var(--ink-600)}
.wb-mode span.on{background:var(--gold-500);color:#fff}
.wb-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:14px}
.wb-tile{
  border:1px solid var(--ink-200);border-radius:10px;padding:10px 8px;
  font-size:11.5px;text-align:center;line-height:1.4;
  background:#fff;color:var(--ink-600);
}
.wb-tile.on{border-color:var(--gold-500);background:var(--gold-50);color:var(--gold-700);font-weight:600}
.wb-tile.on::after{content:"✓";display:block;margin-top:2px;color:var(--gold-600)}
.wb-input{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--ink-200);border-radius:8px;padding:10px 12px;
  background:#fff;margin-bottom:12px;
}
.wb-input input{flex:1;border:none;outline:none;font-size:13px;background:transparent}
.wb-input .ico{color:var(--ink-400)}
.wb-foot{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px dashed var(--ink-200);font-size:12.5px}
.wb-foot .cost{color:var(--gold-700);font-weight:700}
.wb-foot .btn-go{padding:6px 14px;border-radius:999px;background:var(--gold-glow);color:#fff;font-size:12px;font-weight:600}

/* —— Section heading —— */
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--ink-600);font-size:16px}

/* —— Footer —— */
.footer{
  background:var(--ink-900);color:var(--ink-300);
  padding:64px 0 24px;margin-top:96px;
}
.footer a{color:var(--ink-300)}
.footer a:hover{color:var(--gold-300)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:48px;margin-bottom:48px}
.footer h4{color:#fff;font-family:var(--ff-serif);font-size:15px;margin-bottom:18px;letter-spacing:1px}
.footer ul{list-style:none}
.footer li{margin-bottom:10px;font-size:13.5px}
.footer .brand-text .brand-name{color:#fff}
.footer .brand-text .brand-sub{color:var(--ink-500)}
.footer .brand-mark{box-shadow:none}
.footer-bottom{
  padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--ink-500);gap:20px;flex-wrap:wrap;
}
.disclaimer{
  margin-top:14px;padding:14px 18px;
  background:rgba(255,255,255,.04);border-radius:8px;
  font-size:12px;line-height:1.7;color:var(--ink-500);
  border-left:2px solid var(--gold-500);
}

/* —— 响应式 —— */
@media (max-width: 980px){
  .nav-menu{display:none;position:absolute;top:86px;left:0;right:0;background:#fff;border-bottom:1px solid var(--ink-200);padding:12px 16px;flex-direction:column;align-items:stretch;gap:0}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px;border-radius:0;border-bottom:1px solid var(--ink-100)}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:80px 0 60px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px}
  .workbench{transform:none}
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width: 560px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .btn{padding:10px 18px}
  .workbench-body{padding:14px}
  .wb-grid{grid-template-columns:repeat(3,1fr)}
}

/* —— 工具类 —— */
.mt-0{margin-top:0!important}
.mt-2{margin-top:8px}
.mt-3{margin-top:12px}
.mt-4{margin-top:16px}
.mt-6{margin-top:24px}
.mt-8{margin-top:32px}
.mt-12{margin-top:48px}
.mb-0{margin-bottom:0!important}
.mb-2{margin-bottom:8px}
.mb-3{margin-bottom:12px}
.mb-4{margin-bottom:16px}
.mb-6{margin-bottom:24px}
.mb-8{margin-bottom:32px}
.text-center{text-align:center}
.flex{display:flex}
.flex-wrap{flex-wrap:wrap}
.gap-2{gap:8px}
.gap-3{gap:12px}
.gap-4{gap:16px}
.gap-6{gap:24px}
.items-center{align-items:center}
.justify-between{justify-content:space-between}
.justify-center{justify-content:center}
.w-full{width:100%}
.hidden{display:none}

/* V4.0 导航新功能徽标 */
.nav-new{display:inline-block;margin-left:5px;padding:1px 5px;border-radius:4px;
  background:linear-gradient(135deg,var(--gold-500),var(--gold-600));color:#fff;
  font-size:10px;font-weight:700;line-height:1.5;vertical-align:middle;letter-spacing:.3px}
.nav-menu a:hover .nav-new{background:linear-gradient(135deg,var(--gold-600),var(--gold-700))}