/* ============================================================
   RUNZE IP · runzeip.cn
   Design system v2 — 墨玉(midnight jade) + 朱砂(cinnabar) + 象牙(bone)
   与 runzeip.net（深蓝+金+满幅图）完全区隔的视觉语言
   ============================================================ */
:root{
  --ink:#0E1F1C; --ink-2:#16302B; --paper:#F7F4ED; --paper-2:#EFEBE1;
  --paper-3:#E4DFD2; --accent:#B4472F; --accent-soft:#D98C6A; --jade:#1F4D46;
  --text:#22322E; --text-2:#5C6B66; --line:#D8D2C4; --white:#FFFFFF;
  --serif:'Fraunces','Noto Serif SC',Georgia,serif;
  --sans:'Manrope','Noto Sans SC',-apple-system,sans-serif;
  --maxw:1220px; --r:2px; --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);font-weight:400;color:var(--text);background:var(--paper);
  line-height:1.72;font-size:15.5px;letter-spacing:.01em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
::selection{background:var(--accent);color:var(--paper)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.14;color:var(--ink);letter-spacing:-.015em}
h1{font-size:clamp(2.4rem,5.2vw,4.2rem)}
h2{font-size:clamp(1.75rem,3.4vw,2.7rem)}
h3{font-size:1.22rem}
h4{font-size:1.02rem}
p{color:var(--text-2)}
.sub{font-size:1.06rem;color:var(--text-2);max-width:62ch}

/* ---------- Eyebrow ---------- */
.hero-eyebrow,.section-eyebrow{font-family:var(--sans);font-size:.7rem;font-weight:700;letter-spacing:.24em;
  text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:14px;margin-bottom:1.4rem}
.hero-eyebrow::before,.section-eyebrow::before{content:"";width:34px;height:1px;background:var(--accent);flex:none}
.section-eyebrow{color:var(--jade)}
.section-eyebrow::before{background:var(--jade)}

/* ---------- Top bar ---------- */
.top-bar{background:var(--ink);color:rgba(247,244,237,.72);font-size:.78rem;letter-spacing:.04em}
.top-bar-inner{display:flex;justify-content:space-between;align-items:center;min-height:40px;gap:1rem}
.top-left,.top-right{display:flex;align-items:center;gap:14px}
.lang{color:rgba(247,244,237,.6);transition:color .25s}
.lang:hover,.lang.active{color:var(--paper)}
.lang.active{position:relative}
.lang.active::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:1px;background:var(--accent-soft)}
.lang-divider{color:rgba(247,244,237,.25)}
.top-contact{color:rgba(247,244,237,.72);border-bottom:1px solid rgba(247,244,237,.2);padding-bottom:1px;transition:.25s}
.top-contact:hover{color:var(--paper);border-color:var(--accent-soft)}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(247,244,237,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 12px 40px -28px rgba(14,31,28,.5)}
.nav-container{display:flex;align-items:center;justify-content:space-between;min-height:74px;gap:2rem}
.logo{display:flex;align-items:center;gap:13px;flex:none}
.logo-mark{width:42px;height:42px;background:var(--ink);color:var(--paper);display:grid;place-items:center;
  font-family:var(--serif);font-size:1.28rem;font-weight:700;position:relative;flex:none}
.logo-mark::after{content:"";position:absolute;inset:4px;border:1px solid rgba(247,244,237,.22)}
.logo-name{font-family:var(--serif);font-size:1.06rem;font-weight:700;color:var(--ink);letter-spacing:.06em;line-height:1.1}
.logo-tagline{font-size:.68rem;color:var(--text-2);letter-spacing:.1em}
.nav{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.nav-link{font-size:.88rem;color:var(--text);position:relative;padding:6px 0;transition:color .25s}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent);transition:width .38s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-cta{background:var(--ink);color:var(--paper);padding:10px 22px;margin-left:8px;transition:.28s var(--ease)}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--accent);transform:translateY(-1px)}
.nav-mobile-toggle{display:none;background:none;border:1px solid var(--line);width:42px;height:42px;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-mobile-toggle span{width:16px;height:1px;background:var(--ink);display:block}

/* ---------- HERO v2 ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(120% 90% at 88% -10%,rgba(180,71,47,.10),transparent 58%),
  radial-gradient(90% 80% at 0% 110%,rgba(31,77,70,.12),transparent 60%),
  linear-gradient(180deg,var(--paper) 0%,var(--paper-2) 100%)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:88px 88px;opacity:.35;
  -webkit-mask-image:radial-gradient(70% 60% at 50% 0%,#000,transparent 72%);
  mask-image:radial-gradient(70% 60% at 50% 0%,#000,transparent 72%)}
.hero-content{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:64px;
  align-items:center;padding:104px 32px 92px}
.hero-title{position:relative;margin-bottom:1.5rem}
.hero-title-cn{display:block}
.hero-title-en{display:block;font-style:italic;color:var(--jade);font-size:.52em;margin-top:.28em;letter-spacing:.01em}
.hero-sub{font-size:1.08rem;max-width:54ch;margin-bottom:2.4rem}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;font-size:.88rem;font-weight:600;
  letter-spacing:.04em;transition:.3s var(--ease);border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 14px 30px -18px rgba(14,31,28,.7)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--jade);border-color:var(--line);padding:10px 20px;font-size:.82rem}
.btn-ghost:hover{border-color:var(--jade)}
.btn-large{padding:16px 38px;font-size:.92rem}
.hero-panel{background:var(--white);border:1px solid var(--line);padding:34px 32px;position:relative;
  box-shadow:24px 24px 0 -18px rgba(31,77,70,.16)}
.hero-panel::before{content:"";position:absolute;top:-1px;left:-1px;width:72px;height:3px;background:var(--accent)}
.hp-item{padding:16px 0;border-bottom:1px dashed var(--line)}
.hp-item:last-child{border-bottom:0;padding-bottom:0}
.hp-num{font-family:var(--serif);font-size:2.3rem;font-weight:700;color:var(--ink);line-height:1}
.hp-num em{font-style:normal;color:var(--accent);font-size:.52em;margin-left:2px}
.hp-label{font-size:.76rem;color:var(--text-2);letter-spacing:.08em;margin-top:4px}
.hero-trust{position:relative;z-index:2;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;background:rgba(255,255,255,.34)}
.trust-label{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--text-2)}
.trust-logo{font-family:var(--serif);font-size:1.02rem;color:var(--ink);opacity:.5;letter-spacing:.04em;transition:.25s}
.trust-logo:hover{opacity:1;color:var(--accent)}

/* ---------- Page hero ---------- */
.page-hero{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;padding:88px 0 76px}
.page-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:380px;height:380px;border:1px solid rgba(247,244,237,.12);border-radius:50%}
.page-hero::before{content:"";position:absolute;right:40px;bottom:-160px;width:300px;height:300px;border:1px solid rgba(217,140,106,.2);border-radius:50%}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:var(--paper);margin-bottom:1.1rem}
.page-hero .sub{color:rgba(247,244,237,.72)}
.page-hero .hero-eyebrow{color:var(--accent-soft)}
.page-hero .hero-eyebrow::before{background:var(--accent-soft)}

/* ---------- Section common ---------- */
.content-section{padding:96px 0}
.content-section:nth-of-type(even){background:var(--paper-2)}
.section-head{max-width:70ch;margin-bottom:58px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .hero-eyebrow,.section-head.center .section-eyebrow{justify-content:center}
.section-title{margin-bottom:1rem}
.section-sub{font-size:1.02rem}

/* ---------- Services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.service-card{background:var(--paper);padding:34px 28px 32px;display:block;position:relative;transition:.32s var(--ease)}
.content-section:nth-of-type(even) .service-card{background:var(--paper-2)}
.service-card:hover{background:var(--white);transform:translateY(-4px);box-shadow:0 20px 40px -30px rgba(14,31,28,.55);z-index:2}
.service-num{font-family:var(--serif);font-size:1.5rem;color:var(--accent);margin-bottom:16px;line-height:1;opacity:.9}
.service-card h3{margin-bottom:10px;font-size:1.12rem}
.service-card p{font-size:.9rem;line-height:1.68}

/* ---------- Cases ---------- */
.cases-featured{padding:96px 0;background:var(--paper-2)}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cases-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.case-card{display:grid;grid-template-columns:210px 1fr;gap:0;background:var(--paper);border-bottom:1px solid var(--line);transition:.3s var(--ease)}
.case-card:hover{background:var(--white)}
.case-image{min-height:190px;background-size:cover;background-position:center;filter:saturate(.85);transition:.45s var(--ease)}
.case-card:hover .case-image{filter:saturate(1.1)}
.case-image-1{background-image:url(/img/case1.jpg)}.case-image-2{background-image:url(/img/case2.jpg)}
.case-image-3{background-image:url(/img/case3.jpg)}.case-image-4{background-image:url(/img/case4.jpg)}
.case-image-5{background-image:url(/img/case5.jpg)}.case-image-6{background-image:url(/img/case6.jpg)}
.case-image-7{background-image:url(/img/case7.jpg)}.case-image-8{background-image:url(/img/case8.jpg)}
.case-image-9{background-image:url(/img/case9.jpg)}
.case-content{padding:26px 30px}
.case-tag{display:inline-block;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--jade);
  border:1px solid var(--jade);padding:3px 10px;margin-bottom:12px}
.case-content h3{font-size:1.1rem;margin-bottom:9px}
.case-content p{font-size:.9rem;margin-bottom:14px}
.case-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:.76rem;color:var(--text-2)}
.case-meta span:nth-child(even){color:var(--paper-3)}
.cases-more{margin-top:38px;text-align:center}
.case-large{grid-template-columns:260px 1fr}

/* ---------- Why us ---------- */
.why-us{padding:96px 0;background:var(--ink);color:var(--paper)}
.why-us h2,.why-us h4{color:var(--paper)}
.why-us p{color:rgba(247,244,237,.66)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px 34px}
.why-item{border-top:1px solid rgba(247,244,237,.18);padding-top:20px}
.why-num{font-family:var(--serif);font-size:2.1rem;color:var(--accent-soft);line-height:1;margin-bottom:12px}
.why-item h4{margin-bottom:8px;font-size:1.04rem}
.why-item p{font-size:.88rem}

/* ---------- Global network ---------- */
.global{padding:96px 0}
.global-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px}
.global-card{border:1px solid var(--line);padding:26px 22px;background:var(--white);text-align:center;transition:.3s var(--ease)}
.global-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.global-flag{font-size:1.9rem;margin-bottom:10px}
.global-card h4{font-size:.98rem;margin-bottom:4px}
.global-card p{font-size:.8rem}

/* ---------- Stats ---------- */
.stats-bar{background:var(--jade);color:var(--paper);padding:52px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-num{font-family:var(--serif);font-size:2.7rem;font-weight:700;line-height:1;color:var(--paper)}
.stat-label{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(247,244,237,.62);margin-top:9px}

/* ---------- Insights ---------- */
.insights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.insight-card{background:var(--paper);padding:30px 28px;transition:.3s var(--ease);display:flex;flex-direction:column}
.content-section:nth-of-type(even) .insight-card{background:var(--paper-2)}
.insight-card:hover{background:var(--white);transform:translateY(-3px);z-index:2}
.insight-meta{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:13px}
.insight-card h3{font-size:1.06rem;margin-bottom:11px;line-height:1.4}
.insight-card p{font-size:.88rem}

/* ---------- CTA ---------- */
.cta-section{background:var(--accent);color:var(--paper);padding:88px 0;position:relative;overflow:hidden}
.cta-section::after{content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;
  border:1px solid rgba(247,244,237,.18);border-radius:50%}
.cta-content{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap}
.cta-section h2{color:var(--paper);font-size:clamp(1.7rem,3.2vw,2.5rem)}
.cta-section p{color:rgba(247,244,237,.82);margin-top:.8rem}
.cta-section .btn-primary{background:var(--paper);color:var(--accent)}
.cta-section .btn-primary:hover{background:var(--ink);color:var(--paper)}

/* ---------- Team ---------- */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.team-card{background:var(--white);border:1px solid var(--line);padding:32px 26px;text-align:center;transition:.32s var(--ease)}
.team-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 20px 40px -32px rgba(14,31,28,.6)}
.team-avatar{width:78px;height:78px;border-radius:50%;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--serif);font-size:1.7rem;margin:0 auto 18px}
.team-card h3{font-size:1.08rem;margin-bottom:5px}
.team-role{font-size:.78rem;color:var(--accent);letter-spacing:.06em;margin-bottom:13px}
.team-card p{font-size:.86rem;text-align:left}

/* ---------- Form ---------- */
.form-section{padding:96px 0;background:var(--paper-2)}
.form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.form-card{background:var(--white);border:1px solid var(--line);padding:40px 38px}
.form-card h2{margin-bottom:.8rem}
.form-card>p{font-size:.92rem;margin-bottom:1.8rem}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.8rem;font-weight:600;color:var(--ink);margin-bottom:7px;letter-spacing:.04em}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 15px;border:1px solid var(--line);
  background:var(--paper);font-family:var(--sans);font-size:.92rem;color:var(--text);transition:.24s;border-radius:var(--r)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent);background:var(--white)}
.form-group textarea{min-height:110px;resize:vertical}
.contact-info-card{background:var(--ink);color:var(--paper);padding:40px 38px;position:relative}
.contact-info-card::before{content:"";position:absolute;top:0;left:0;width:88px;height:3px;background:var(--accent)}
.contact-info-card h2{color:var(--paper);margin-bottom:1.6rem}
.contact-info-item{margin-bottom:22px;padding-bottom:22px;border-bottom:1px solid rgba(247,244,237,.12)}
.contact-info-item:last-child{margin-bottom:0;padding-bottom:0;border-bottom:0}
.contact-info-item h4{color:var(--accent-soft);font-size:.86rem;letter-spacing:.1em;margin-bottom:7px}
.contact-info-item p{color:rgba(247,244,237,.78);font-size:.9rem}
.breadcrumb{font-size:.78rem;color:var(--text-2);padding:18px 0;letter-spacing:.03em}
.breadcrumb a{color:var(--text-2);border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--accent);border-color:var(--accent)}
.separator{height:1px;background:var(--line);margin:0}
.thankyou-section{padding:110px 0;text-align:center;min-height:66vh;display:grid;place-items:center}
.thankyou-section h1{margin-bottom:1rem}
.thankyou-section p{max-width:52ch;margin:0 auto 2.2rem}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:rgba(247,244,237,.66);padding:74px 0 0;font-size:.88rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer-logo{font-family:var(--serif);font-size:1.2rem;font-weight:700;color:var(--paper);margin-bottom:12px;letter-spacing:.05em}
.footer-logo-sub{font-size:.76rem;color:rgba(247,244,237,.45);margin-bottom:14px}
.footer-desc{font-size:.84rem;line-height:1.7;max-width:34ch}
.footer-col h5{color:var(--paper);font-family:var(--sans);font-size:.76rem;letter-spacing:.18em;text-transform:uppercase;margin-bottom:18px;font-weight:700}
.footer-col p{margin-bottom:9px;color:rgba(247,244,237,.62);font-size:.86rem}
.footer-links a{display:block;margin-bottom:9px;color:rgba(247,244,237,.62);font-size:.86rem;transition:.24s}
.footer-links a:hover{color:var(--accent-soft);transform:translateX(3px)}
.footer-lic{font-size:.78rem;color:rgba(247,244,237,.4);margin-top:16px}
.footer-bottom{border-top:1px solid rgba(247,244,237,.12);padding:22px 0;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.78rem;color:rgba(247,244,237,.4)}

/* ---------- Reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ---------- Article pages ---------- */
.article-body{max-width:760px;margin:0 auto;font-size:1.02rem;line-height:1.9}
.article-body h2{font-size:1.5rem;margin:2.4rem 0 1rem}
.article-body h3{font-size:1.18rem;margin:1.8rem 0 .8rem}
.article-body p{margin-bottom:1.1rem;color:var(--text)}
.article-body ul{list-style:disc;padding-left:1.4rem;margin:0 0 1.2rem}
.article-body li{margin-bottom:.5rem;color:var(--text-2)}
.article-body blockquote{border-left:3px solid var(--accent);padding:.6rem 0 .6rem 1.4rem;margin:1.6rem 0;font-style:italic;color:var(--text-2)}

/* ---------- Responsive ---------- */
@media(max-width:1080px){
  .hero-content{grid-template-columns:1fr;gap:44px;padding:74px 32px 66px}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid,.insights-grid,.team-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav{gap:20px}
}
@media(max-width:760px){
  .container{padding:0 20px}
  .nav{display:none}
  .nav.open{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:flex-start;
    gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:14px 20px 22px;box-shadow:0 20px 40px -30px rgba(0,0,0,.5)}
  .nav.open .nav-link{padding:12px 0;width:100%;border-bottom:1px solid var(--line)}
  .nav.open .nav-cta{margin:16px 0 0;width:100%;justify-content:center}
  .nav-mobile-toggle{display:flex}
  .top-right{display:none}
  .content-section,.cases-featured,.why-us,.global,.form-section{padding:64px 0}
  .services-grid,.cases-grid,.insights-grid,.team-grid,.why-grid,.stats-grid{grid-template-columns:1fr}
  .case-card,.case-large{grid-template-columns:1fr}
  .case-image{min-height:170px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{flex:1;justify-content:center}
  .cta-content{flex-direction:column;align-items:flex-start}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media print{
  .top-bar,.header,.footer,.cta-section,.nav-mobile-toggle{display:none}
  body{background:#fff}
}