/* ============================================================
   三箭官网新版 · 设计系统
   品牌：三箭深蓝 #1F2349 / 金 #C9A45C / 米白 #F7F4EC
   ============================================================ */
:root{
  --ink:#1F2349;
  --ink-2:#161A38;
  --ink-3:#0F1228;
  --navy-mid:#2B3163;
  --gold:#C9A45C;
  --gold-2:#E5C989;
  --gold-dk:#8F6B2E;
  --paper:#F7F4EC;
  --paper-2:#FBF9F2;
  --mist:#8B90B0;
  --line:rgba(139,144,176,.25);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --shadow-sm:0 1px 3px rgba(15,18,40,.08);
  --shadow-md:0 6px 18px rgba(15,18,40,.12);
  --wrap:1160px;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper-2);font-size:16px;line-height:1.7}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
:focus-visible{outline:2px solid var(--gold-dk);outline-offset:3px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 6vw}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(15,18,40,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(201,164,92,.25);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav .brand{display:flex;align-items:center;gap:12px}
.nav .brand img{width:38px;height:auto}
.nav .brand b{font-family:var(--serif);font-size:19px;letter-spacing:.14em;color:#fff}
.nav .brand small{display:block;font-size:10px;letter-spacing:.28em;color:var(--gold-2);font-weight:400}
.nav-links{display:flex;gap:14px}
.nav-links a{font-size:12.5px;letter-spacing:.05em;color:rgba(247,244,236,.82);padding:6px 1px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s;white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--gold-2);border-bottom-color:var(--gold)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:10px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--gold-2);margin:5px 0;transition:transform .3s,opacity .3s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;text-align:center;overflow:hidden;
  background:
    radial-gradient(120% 75% at 82% -8%, #2B3163 0%, transparent 55%),
    radial-gradient(90% 60% at 6% 110%, #262C58 0%, transparent 60%),
    linear-gradient(168deg, var(--ink) 0%, var(--ink-2) 55%, var(--ink-3) 100%);
  padding:13vh 6vw 11vh;
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cg fill='none' stroke='%23C9A45C' stroke-width='1'%3E%3Cpath d='M70 20 L120 105 L20 105 Z'/%3E%3C/g%3E%3C/svg%3E") repeat;
  background-size:140px 140px;
}
.hero .badge{
  display:inline-block;font-size:12px;letter-spacing:.3em;text-indent:.3em;color:var(--gold-2);
  border:1px solid rgba(201,164,92,.6);border-radius:2px;padding:7px 16px;margin-bottom:26px;
}
.hero h1{font-family:var(--serif);font-size:clamp(30px,4.6vw,50px);letter-spacing:.12em;font-weight:600;line-height:1.3}
.hero h1 .gold{
  background:linear-gradient(180deg,#F4E9CE 10%,var(--gold) 60%,#A87F3D 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero .sub{margin-top:20px;font-size:clamp(14px,1.6vw,17px);letter-spacing:.34em;color:var(--mist)}
.hero .desc{max-width:640px;margin:26px auto 0;font-size:15px;line-height:2;color:rgba(247,244,236,.75)}
.hero .cta{margin-top:38px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;font-size:15px;letter-spacing:.16em;padding:14px 34px;border-radius:2px;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-gold{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:var(--ink-3);font-weight:600}
.btn-ghost{border:1px solid rgba(201,164,92,.65);color:var(--gold-2)}

/* ---------- 通用区块 ---------- */
.sec{padding:9vh 0}
.sec-light{background:var(--paper-2)}
.sec-paper{background:linear-gradient(180deg,var(--paper) 0%,#F1ECDF 100%)}
.sec-dark{background:linear-gradient(170deg,var(--ink) 0%,var(--ink-2) 70%,var(--ink-3) 100%);color:var(--paper)}
.sec-head{max-width:680px;margin-bottom:6vh}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .rule{margin-left:auto;margin-right:auto}
.kicker{font-size:12px;letter-spacing:.5em;text-indent:.5em;color:var(--gold-dk);text-transform:uppercase;margin-bottom:12px}
.sec-dark .kicker{color:var(--gold)}
.sec-head h2{font-family:var(--serif);font-size:clamp(24px,3vw,32px);letter-spacing:.14em;line-height:1.4}
.sec-dark .sec-head h2{color:#fff}
.rule{width:52px;height:2px;background:linear-gradient(90deg,var(--gold),transparent);margin-top:16px}
.sec-dark .rule{background:linear-gradient(90deg,var(--gold),transparent)}
.sec-head p{margin-top:14px;font-size:14.5px;color:rgba(31,35,73,.66)}
.sec-dark .sec-head p{color:rgba(247,244,236,.66)}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{background:#fff;padding:34px 20px;text-align:center}
.stat b{display:block;font-family:var(--serif);font-size:clamp(26px,3vw,36px);color:var(--gold-dk);line-height:1.1}
.stat span{display:block;font-size:12px;letter-spacing:.2em;color:#7C7FA3;margin-top:8px}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid rgba(143,107,46,.18);border-top:3px solid var(--gold);
  padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card .no{font-family:var(--serif);font-size:13px;letter-spacing:.2em;color:var(--gold-dk);margin-bottom:12px}
.card h3{font-family:var(--serif);font-size:18px;letter-spacing:.1em;margin-bottom:10px}
.card p{font-size:13.5px;line-height:1.9;color:rgba(31,35,73,.68)}
.card .tagline{margin-top:auto;padding-top:16px;font-size:12px;letter-spacing:.14em;color:var(--gold-dk);border-top:1px dashed rgba(143,107,46,.25)}
.card a.tagline{border:none;align-self:flex-start}
.card a.tagline:hover{color:var(--ink)}

/* 痛点卡 */
.pain{border-top:none;border-left:3px solid var(--gold);background:var(--paper)}
.pain h3{font-size:16.5px}

/* ---------- 对比表 ---------- */
.cmp{width:100%;border-collapse:collapse;background:#fff;box-shadow:var(--shadow-sm)}
.cmp th{background:var(--ink);color:#fff;font-size:13.5px;letter-spacing:.12em;padding:14px 18px;font-weight:600;text-align:left}
.cmp th:last-child{background:var(--gold-dk)}
.cmp td{padding:14px 18px;font-size:13.5px;border-bottom:1px solid var(--line);color:rgba(31,35,73,.75)}
.cmp td:last-child{color:var(--ink);font-weight:600;background:rgba(201,164,92,.08)}
.cmp tr:last-child td{border-bottom:none}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step}
.step{background:rgba(255,255,255,.04);border:1px solid rgba(201,164,92,.35);padding:26px 18px;position:relative}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--serif);font-size:30px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(201,164,92,.8);display:block;margin-bottom:14px;
}
.step h4{font-family:var(--serif);font-size:15.5px;letter-spacing:.12em;color:var(--gold-2);margin-bottom:8px}
.step p{font-size:12.5px;line-height:1.85;color:rgba(247,244,236,.62)}

/* ---------- 资质墙 ---------- */
.quals{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.qual{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.04);border:1px solid rgba(201,164,92,.25);padding:16px 18px}
.qual::before{content:"◆";color:var(--gold);font-size:11px;margin-top:5px}
.qual span{font-size:13.5px;letter-spacing:.06em;color:rgba(247,244,236,.85);line-height:1.7}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:
    radial-gradient(110% 70% at 50% 130%, #2B3163 0%, transparent 60%),
    linear-gradient(172deg,var(--ink) 0%,var(--ink-3) 100%);
  color:#fff;text-align:center;padding:11vh 6vw;
}
.cta-band h2{font-family:var(--serif);font-size:clamp(24px,3vw,34px);letter-spacing:.2em;color:var(--gold-2)}
.cta-band p{margin-top:16px;font-size:14px;letter-spacing:.2em;color:var(--mist)}
.cta-band .tel{margin-top:34px;font-family:var(--serif);font-size:clamp(26px,4vw,40px);letter-spacing:.1em;color:#fff}
.cta-band .tel a{color:var(--gold-2);border-bottom:1px solid rgba(201,164,92,.5)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-3);color:rgba(247,244,236,.6);padding:7vh 0 4vh}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
.foot-grid img{width:56px;margin-bottom:16px;opacity:.9}
.foot-grid h5{font-family:var(--serif);font-size:14px;letter-spacing:.24em;color:var(--gold-2);margin-bottom:16px}
.foot-grid p,.foot-grid li{font-size:13px;line-height:2.1}
.foot-grid a:hover{color:var(--gold-2)}
.foot-bottom{margin-top:6vh;padding-top:22px;border-top:1px solid rgba(139,144,176,.18);font-size:11.5px;letter-spacing:.1em;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* 主业务大卡（房屋建筑/市政工程） */
.card.main{border-top:4px solid var(--gold);padding:38px 30px}
.card.main h3{font-size:21px}
.card.main p{font-size:14px}

/* 新闻/党建列表卡 */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid rgba(143,107,46,.18);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-card .date{background:var(--paper);border-bottom:1px solid rgba(143,107,46,.18);padding:12px 20px;font-size:12px;letter-spacing:.18em;color:var(--gold-dk)}
.news-card .body{padding:20px}
.news-card h3{font-family:var(--serif);font-size:15.5px;letter-spacing:.06em;margin-bottom:8px}
.news-card p{font-size:12.5px;line-height:1.9;color:rgba(31,35,73,.62)}
@media (max-width:960px){.news{grid-template-columns:1fr}}

/* 时间轴（简历） */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--gold),rgba(201,164,92,.15))}
.tl-item{position:relative;padding:0 0 26px 14px}
.tl-item::before{content:"";position:absolute;left:-24px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--paper-2);border:1px solid var(--gold)}
.tl-item b{font-family:var(--serif);font-size:15px;letter-spacing:.12em;color:var(--gold-dk)}
.tl-item p{font-size:13px;line-height:1.9;color:rgba(31,35,73,.68);margin-top:4px}

/* ---------- 招募二维码 ---------- */
.qr-box{margin-top:18px;display:flex;flex-direction:column;align-items:center;gap:10px}
.qr-box img{width:152px;height:152px;background:#fff;padding:9px;border:1px solid rgba(143,107,46,.22);box-shadow:var(--shadow-sm)}
.qr-box figcaption{font-size:12px;letter-spacing:.06em;line-height:1.7;color:rgba(31,35,73,.55);text-align:center}

/* ---------- 廉洁举报 ---------- */
.integrity-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:8px}
.integrity-item{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.05);border:1px solid rgba(201,164,92,.28);padding:18px 20px}
.integrity-item::before{content:"◆";color:var(--gold);font-size:11px;margin-top:6px}
.integrity-item p{font-size:13.5px;line-height:1.85;color:rgba(247,244,236,.78)}
.report-bar{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.report-cell{background:rgba(201,164,92,.1);border-left:3px solid var(--gold);padding:18px 20px}
.report-cell b{display:block;font-family:var(--serif);font-size:12.5px;letter-spacing:.22em;color:var(--gold);margin-bottom:8px}
.report-cell span,.report-cell a{font-size:14px;line-height:1.75;color:var(--paper);word-break:break-all}
.report-cell a{border-bottom:1px solid rgba(201,164,92,.5)}
.pledge{margin-top:22px;font-size:13px;line-height:1.95;color:rgba(247,244,236,.62)}
.pledge b{color:var(--gold-2)}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .report-bar{grid-template-columns:1fr}
}
/* ---------- 页眉导航：任何宽度都不折叠，始终在页眉位置展示 ---------- */
.nav-toggle{display:none !important}
.nav-links{display:flex;align-items:center;flex-wrap:nowrap}

@media (max-width:1100px){
  .nav .brand b{font-size:17px}
  .nav .brand small{font-size:9px;letter-spacing:.2em}
  .nav-links{gap:10px}
  .nav-links a{font-size:11.5px;letter-spacing:0}
}
@media (max-width:920px){
  .wrap{padding:0 4vw}
  .nav-links{gap:7px}
  .nav-links a{font-size:11px}
}
@media (max-width:780px){
  .site-header .nav{height:auto;padding:9px 0}
  .site-header .wrap.nav{flex-wrap:wrap;row-gap:2px}
  .nav-links{
    order:3;flex:1 0 100%;overflow-x:auto;flex-wrap:nowrap;gap:15px;
    padding:6px 0 3px;border-top:1px solid rgba(201,164,92,.18);
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{font-size:12.5px;padding:4px 0}
}
@media (max-width:680px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .quals,.integrity-list,.report-bar{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .sec{padding:7vh 0}
}


/* ---------- 联系电话弹窗 ---------- */
.phone-modal{
  position:fixed;inset:0;z-index:300;display:none;
  background:rgba(8,10,24,.74);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  align-items:center;justify-content:center;padding:6vw;
}
.phone-modal.show{display:flex}
.pm-box{
  position:relative;width:100%;max-width:430px;text-align:center;
  background:linear-gradient(165deg,#151A38 0%,#0F1228 100%);
  border:1px solid rgba(201,164,92,.35);border-radius:14px;
  padding:32px 26px 26px;box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.pm-close{
  position:absolute;top:8px;right:10px;width:36px;height:36px;line-height:1;
  background:none;border:none;color:rgba(247,244,236,.55);font-size:25px;cursor:pointer;
}
.pm-close:hover{color:var(--gold-2)}
.pm-box h3{font-family:var(--serif);font-size:20px;letter-spacing:.06em;color:#fff;margin:0 0 16px}
.pm-label{font-size:12px;letter-spacing:.24em;color:var(--gold-2);margin:0 0 6px}
.pm-tel{display:block;font-family:var(--serif);font-size:34px;letter-spacing:.03em;
  color:var(--gold);text-decoration:none;margin:0 0 10px;white-space:nowrap}
.pm-tel:hover{color:var(--gold-2)}
.pm-sub{font-size:12px;color:rgba(247,244,236,.62);margin:0 0 22px}
.pm-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
@media (max-width:420px){.pm-tel{font-size:28px}}


/* ---------- 窄屏导航：右侧渐隐，提示还能往左滑 ---------- */
.nav-links.more{
  -webkit-mask-image:linear-gradient(to right,#000 86%,rgba(0,0,0,0) 100%);
  mask-image:linear-gradient(to right,#000 86%,rgba(0,0,0,0) 100%);
}


/* ---------- 关于页：公司简介金色点缀块 ---------- */
.profile-point{
  margin-top:16px;padding:14px 18px;
  background:linear-gradient(135deg,rgba(201,164,92,.12),rgba(201,164,92,.04));
  border-left:3px solid var(--gold);
  border-radius:0 10px 10px 0;
}
.profile-point b{
  display:block;font-family:var(--serif);font-size:14px;
  letter-spacing:.16em;color:var(--gold-dk);margin-bottom:4px;
}
.profile-point b::before{
  content:'◆';font-size:9px;vertical-align:2px;margin-right:8px;color:var(--gold);
}
.profile-point .pt-tags{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 10px}
.profile-point .pt-tags span{
  font-size:12px;letter-spacing:.03em;padding:4px 11px;border-radius:999px;
  border:1px solid rgba(143,107,46,.32);background:#fff;color:#6B5220;
}
.profile-point p{margin:0;font-size:13.5px;line-height:1.95;color:rgba(31,35,73,.72)}