/* ============ 基础与变量 ============ */
:root{
  --red:#C6161D;
  --red-dark:#A30F17;
  --red-light:#E23A41;
  --red-soft:#FCEDEE;
  --ink:#1D2128;
  --text:#4C545E;
  --muted:#8A929D;
  --line:#E6E9EE;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FA;
  --radius:14px;
  --shadow:0 14px 38px rgba(24,30,42,.09);
  --shadow-sm:0 6px 20px rgba(24,30,42,.07);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:78px}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{width:min(1200px,calc(100% - 48px));margin:0 auto}
.section{padding:100px 0}
.section--white{background:#fff}
.section--gray{background:var(--bg-soft)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease}
.btn:hover{transform:translateY(-2px)}
.btn--red{background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(198,22,29,.24)}
.btn--red:hover{background:var(--red-dark);box-shadow:0 12px 26px rgba(198,22,29,.32)}
.btn--white{background:#fff;color:var(--red)}
.btn--white:hover{box-shadow:0 12px 28px rgba(0,0,0,.18)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--ghost:hover{background:rgba(255,255,255,.12)}
.btn--block{width:100%}

/* ============ 章节标题 ============ */
.sec-label{display:inline-flex;align-items:center;gap:10px;color:var(--red);font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}
.sec-label i{display:block;width:28px;height:2px;background:var(--red)}
.sec-label--light{color:rgba(255,255,255,.85)}
.sec-label--light i{background:#fff}
.sec-title{margin-top:12px;color:var(--ink);font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.02em}
.sec-title--light{color:#fff}
.sec-sub{margin-top:14px;color:var(--muted);font-size:16px}
.sec-head{margin-bottom:52px}
.sec-head--center{text-align:center}
.sec-head--center .sec-label{justify-content:center}
.sec-head--center .sec-sub{margin-left:auto;margin-right:auto;max-width:720px}

/* ============ 顶部导航 ============ */
.header{position:sticky;top:0;z-index:80;height:78px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(230,233,238,.9);transition:box-shadow .3s ease}
.header.is-scrolled{box-shadow:0 6px 24px rgba(20,26,36,.09)}
.header__inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{width:112px;height:auto}
.nav{display:flex;align-items:center;gap:26px}
.nav__link{position:relative;font-size:15px;font-weight:600;color:#474E58;white-space:nowrap;transition:color .2s}
.nav__link::after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--red);transition:right .25s ease}
.nav__link:hover,.nav__link.is-active{color:var(--red)}
.nav__link:hover::after,.nav__link.is-active::after{right:0}
.nav__cta{padding:10px 22px;font-size:14px}
.menu-toggle{display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer;padding:9px;flex-direction:column;justify-content:space-between}
.menu-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s,opacity .3s}
.menu-toggle.is-open span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

/* ============ 首屏 ============ */
.hero{position:relative;overflow:hidden;background:linear-gradient(115deg,#B91119 0%,#C6161D 48%,#D4252C 100%);color:#fff;padding:96px 0 110px}
.hero__net{position:absolute;right:-8%;top:-16%;width:72%;height:130%;opacity:.55;pointer-events:none}
.hero__net svg{width:100%;height:100%}
.hero__net::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,transparent 25%,rgba(184,17,25,.55) 78%)}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;min-height:510px}
.hero__eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:14px;letter-spacing:.06em;color:rgba(255,255,255,.9);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);padding:8px 18px;border-radius:999px}
.hero__eyebrow .dot{width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.22)}
.hero__title{margin-top:28px;font-size:clamp(38px,4.4vw,60px);line-height:1.28;font-weight:800;letter-spacing:.01em}
.hero__title span{color:#FFE9A8;white-space:nowrap}
.hero__desc{margin-top:24px;font-size:17px;line-height:1.95;color:rgba(255,255,255,.9)}
.hero__actions{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
.hero__cities{margin-top:30px;font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.7)}
.hero__visual{position:relative;padding:0 20px 24px 0}
.hero__photo{position:relative;border:9px solid #fff;border-radius:8px;box-shadow:0 26px 60px rgba(90,0,6,.34);transform:rotate(-1.4deg);overflow:hidden;background:#fff}
.hero__photo img{width:100%;height:340px;object-fit:cover;transform:rotate(1.4deg) scale(1.06)}
.hero__badge{position:absolute;left:-34px;bottom:44px;background:#fff;color:var(--ink);border-radius:12px;padding:18px 26px;box-shadow:0 18px 40px rgba(90,0,6,.28);min-width:150px}
.hero__badge strong{display:block;font-size:38px;line-height:1.1;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums}
.hero__badge strong small{font-size:20px}
.hero__badge span{font-size:13px;color:var(--muted)}
.hero__badge--small{left:auto;right:-12px;bottom:-12px;min-width:0;display:flex;align-items:center;gap:12px;padding:12px 20px}
.hero__badge--small strong{font-size:15px;color:var(--ink);font-weight:700}
.hero__badge--small i{width:1px;height:14px;background:var(--line)}
.hero__scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:10px;letter-spacing:.3em;color:rgba(255,255,255,.65);z-index:2}
.hero__scroll span{width:1px;height:30px;background:linear-gradient(rgba(255,255,255,.7),transparent)}

/* ============ 数据条 ============ */
.statband{background:#fff;border-bottom:1px solid var(--line);padding:38px 0}
.statband__grid{display:grid;grid-template-columns:repeat(5,1fr)}
.statband__item{text-align:center;padding:6px 12px;border-right:1px solid var(--line)}
.statband__item:last-child{border-right:0}
.statband__num{font-size:38px;line-height:1.2;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.statband__num em{font-style:normal;color:var(--red);font-size:26px}
.statband__label{margin-top:6px;font-size:14px;color:var(--muted)}

/* ============ 关于优声 ============ */
.about__grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:76px;align-items:center}
.about__media{position:relative;height:560px}
.about__img{position:absolute;object-fit:cover;border-radius:12px;box-shadow:var(--shadow)}
.about__img--tall{left:0;top:0;width:56%;height:82%}
.about__img--wide{right:0;bottom:0;width:62%;height:46%;border:7px solid #fff}
.about__year{position:absolute;left:0;bottom:0;width:56%;height:18%;background:var(--red);border-radius:0 0 12px 12px;display:flex;align-items:center;gap:16px;padding:0 22px;color:#fff}
.about__year strong{font-size:30px;font-weight:800;line-height:1}
.about__year span{font-size:12px;line-height:1.6;color:rgba(255,255,255,.88)}
.about__lead{margin:26px 0 22px;font-size:27px;line-height:1.5;color:var(--ink);font-weight:700}
.about__text p{margin-bottom:16px;font-size:15.5px;line-height:2;text-align:justify}
.quote{position:relative;margin:22px 0 24px;padding:22px 26px 22px 52px;background:var(--red-soft);border-left:4px solid var(--red);border-radius:0 10px 10px 0}
.quote__mark{position:absolute;left:16px;top:6px;font-size:48px;line-height:1;color:var(--red);font-family:Georgia,serif;opacity:.55}
.quote p{margin:0;color:var(--ink);font-weight:600;font-size:15.5px}
.value-chips{display:flex;gap:14px;margin-top:28px}
.value-chip{flex:1;text-align:center;border:1px solid var(--line);border-radius:10px;padding:16px 8px;transition:.25s}
.value-chip:hover{border-color:var(--red);background:var(--red-soft);transform:translateY(-3px)}
.value-chip span{display:block;font-size:22px;font-weight:800;color:var(--red);letter-spacing:.14em}
.value-chip small{display:block;margin-top:2px;font-size:10px;letter-spacing:.16em;color:var(--muted)}

/* ============ 服务领域 ============ */
.services__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid rgba(230,233,238,.9);transition:transform .3s ease,box-shadow .3s ease}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.service-card__img{height:210px;overflow:hidden;background:#eee}
.service-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.service-card:hover .service-card__img img{transform:scale(1.08)}
.service-card__body{position:relative;padding:26px 26px 30px}
.service-card__no{position:absolute;right:24px;top:20px;font-size:30px;font-weight:800;color:#F0D9DA;line-height:1;font-variant-numeric:tabular-nums}
.service-card h3{position:relative;font-size:20px;color:var(--ink);font-weight:700;margin-bottom:12px}
.service-card p{font-size:14.5px;line-height:1.9;color:var(--text)}

.execution{margin-top:64px;display:grid;grid-template-columns:.82fr 1.18fr;gap:52px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:44px}
.execution__title{font-size:26px;color:var(--ink);font-weight:700;line-height:1.5;margin:18px 0 14px}
.execution__text>p{font-size:15px;line-height:1.95}
.steps{margin-top:24px}
.steps li{display:flex;align-items:center;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line)}
.steps li:last-child{border-bottom:0}
.steps b{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:0 0 34px;border-radius:50%;background:var(--red);color:#fff;font-size:13px;font-weight:700}
.steps span{font-size:15px;color:var(--ink)}
.execution__photos{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.execution__photos img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;cursor:zoom-in;transition:transform .3s,box-shadow .3s}
.execution__photos img:hover{transform:scale(1.03);box-shadow:var(--shadow)}

/* ============ 数字化能力 ============ */
.digital{position:relative;overflow:hidden;background:linear-gradient(120deg,#A50F17 0%,#C6161D 55%,#D42A31 100%);color:#fff}
.digital::before{content:"";position:absolute;right:-180px;top:-180px;width:560px;height:560px;border:1px solid rgba(255,255,255,.13);border-radius:50%;box-shadow:0 0 0 90px rgba(255,255,255,.04),0 0 0 190px rgba(255,255,255,.03)}
.digital__grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.digital__title{margin-top:26px;font-size:36px;line-height:1.45;font-weight:800;color:#fff}
.digital__intro{margin-top:16px;font-size:16px;color:rgba(255,255,255,.86);line-height:1.9}
.digital__list{margin-top:34px}
.digital__list li{display:flex;gap:18px;padding:16px 0;border-top:1px solid rgba(255,255,255,.18)}
.digital__ico{flex:0 0 38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.5);border-radius:50%;font-size:12px;font-weight:700}
.digital__list strong{display:block;font-size:17px;color:#fff;margin-bottom:4px}
.digital__list p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.8)}
.digital__visual{position:relative;display:flex;justify-content:center;min-height:600px;align-items:center}
.phone{position:relative;width:292px;height:580px;background:#22262E;border-radius:44px;padding:11px;box-shadow:0 34px 70px rgba(60,0,5,.42),inset 0 0 0 1px rgba(255,255,255,.15)}
.phone__notch{position:absolute;top:11px;left:50%;transform:translateX(-50%);width:110px;height:22px;background:#22262E;border-radius:0 0 14px 14px;z-index:3}
.phone__screen{height:100%;background:#F4F6F9;border-radius:34px;overflow:hidden;padding:0 14px 14px;display:flex;flex-direction:column}
.phone__status{display:flex;justify-content:space-between;padding:12px 8px 4px;font-size:10px;color:#333;font-weight:700}
.phone__bar{position:relative;text-align:center;padding:10px;background:#fff;font-size:14px;font-weight:700;color:var(--ink);border-radius:12px;margin-top:4px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.phone__back{position:absolute;left:12px;top:6px;font-size:22px;color:var(--red);line-height:1}
.phone__banner{margin-top:12px;background:linear-gradient(120deg,#C6161D,#E2454B);border-radius:12px;padding:14px;color:#fff}
.phone__banner small{display:block;font-size:10px;opacity:.8}
.phone__banner strong{display:block;font-size:14px;margin-top:2px}
.phone__banner em{display:block;font-size:10px;font-style:normal;opacity:.82;margin-top:4px}
.phone__hint{margin:14px 2px 8px;font-size:10.5px;color:#8A929D}
.candidate{display:flex;align-items:center;gap:10px;background:#fff;border-radius:10px;padding:9px 10px;margin-bottom:8px;box-shadow:0 2px 8px rgba(0,0,0,.035)}
.candidate__avatar{width:34px;height:34px;flex:0 0 34px;border-radius:50%;background:#F3D9DA;color:var(--red);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}
.candidate__avatar.cand--b{background:#DCE8F5;color:#3B6FA8}
.candidate__avatar.cand--c{background:#E2EEDC;color:#4E8340}
.candidate__info{flex:1}
.candidate__info strong{display:block;font-size:12px;color:var(--ink)}
.candidate__info small{display:block;font-size:9.5px;color:#98A0AA}
.candidate__check{width:18px;height:18px;border-radius:50%;border:1.5px solid #CBD1D9;display:flex;align-items:center;justify-content:center;font-size:10px;color:#fff}
.candidate__check.is-on{background:var(--red);border-color:var(--red)}
.phone__submit{margin-top:auto;background:var(--red);color:#fff;text-align:center;padding:11px;border-radius:10px;font-size:13px;font-weight:700}
.phone__foot{text-align:center;font-size:9.5px;color:#A0A7B0;margin-top:8px}
.digital__float{position:absolute;background:#fff;color:var(--ink);border-radius:12px;padding:14px 20px;box-shadow:0 14px 34px rgba(60,0,5,.28)}
.digital__float strong{display:block;font-size:24px;color:var(--red);font-weight:800;line-height:1.2}
.digital__float span{font-size:11px;color:var(--muted)}
.digital__float--a{top:60px;left:0}
.digital__float--b{bottom:70px;right:4px}

/* ============ 核心优势 ============ */
.value__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px 32px;transition:.3s}
.value-card:hover{transform:translateY(-6px);border-color:rgba(198,22,29,.35);box-shadow:var(--shadow)}
.value-card__num{position:absolute;right:20px;top:6px;font-size:76px;font-weight:800;color:#F7EFF0;line-height:1;font-variant-numeric:tabular-nums}
.value-card::after{content:"";position:absolute;left:0;top:34px;width:3px;height:34px;background:var(--red)}
.value-card h3{position:relative;font-size:20px;color:var(--ink);font-weight:700;margin-bottom:12px}
.value-card p{position:relative;font-size:14.5px;line-height:1.9}

/* ============ 发展历程 ============ */
.history{background:var(--bg-soft)}
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.timeline__line{position:absolute;top:7px;left:8%;right:8%;height:2px;background:#DDE1E7}
.timeline__item{position:relative;text-align:center;padding:0 10px}
.timeline__dot{position:relative;z-index:2;width:16px;height:16px;margin:0 auto 30px;background:#fff;border:4px solid var(--red);border-radius:50%;box-shadow:0 0 0 5px var(--bg-soft)}
.timeline__year{font-size:30px;font-weight:800;color:var(--red);line-height:1.2}
.timeline__body{margin-top:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 20px;text-align:left;min-height:160px}
.timeline__body h3{font-size:18px;color:var(--ink);font-weight:700;margin-bottom:10px}
.timeline__body p{font-size:14px;line-height:1.9}

/* ============ 业绩荣誉 ============ */
.perf__hero{display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:0;background:var(--red-soft);border-radius:16px;padding:40px 20px;align-items:center}
.perf__bignum{text-align:center;border-right:1px solid #EBCBCD}
.perf__bignum strong{display:block;font-size:64px;line-height:1.05;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums}
.perf__bignum span{font-size:14px;color:var(--text)}
.perf__cities{padding-left:40px}
.perf__cities>p{font-size:13px;color:var(--muted);margin-bottom:14px;letter-spacing:.08em}
.city-chips{display:flex;flex-wrap:wrap;gap:9px}
.city-chips span{background:#fff;border:1px solid #EBCBCD;color:var(--red);font-size:14px;font-weight:600;padding:7px 15px;border-radius:999px}
.perf__cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:26px}
.perf-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 22px;text-align:center;transition:.3s}
.perf-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm);border-color:rgba(198,22,29,.3)}
.perf-card strong{display:block;font-size:34px;font-weight:800;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums}
.perf-card strong small{font-size:15px;font-weight:600;color:var(--red);margin-left:3px}
.perf-card span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
.perf__gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.perf__gallery img{width:100%;height:210px;object-fit:cover;border-radius:10px;cursor:zoom-in;transition:transform .3s}
.perf__gallery img:hover{transform:scale(1.02)}
.honors{margin-top:96px;padding-top:8px;border-top:1px solid var(--line)}
.honors__head{padding-top:64px}
.honors__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;margin-top:36px;align-items:start}
.honors__list h3{font-size:20px;color:var(--ink);font-weight:700;margin:0 0 16px;padding-left:14px;border-left:4px solid var(--red)}
.honors__list h3:not(:first-child){margin-top:36px}
.tick-list li{position:relative;padding:9px 0 9px 26px;font-size:15px;color:var(--text);border-bottom:1px dashed var(--line)}
.tick-list li::before{content:"";position:absolute;left:4px;top:18px;width:8px;height:8px;border-radius:50%;background:var(--red)}
.honors__note{margin-top:24px;padding:18px 20px;background:var(--bg-soft);border-radius:10px;font-size:14px;line-height:1.9;color:var(--text)}
.honors__photos{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.honors__photos img{width:100%;height:190px;object-fit:cover;border-radius:10px;cursor:zoom-in;box-shadow:var(--shadow-sm)}
.honors__photos img:first-child{grid-column:1 / -1;height:230px}
.gov{margin-top:48px;background:var(--bg-soft);border-radius:14px;padding:34px 36px}
.gov h3{font-size:20px;color:var(--ink);font-weight:700;margin-bottom:22px}
.gov__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.gov__grid>div{border-left:2px solid var(--red);padding-left:16px}
.gov__grid b{display:block;font-size:20px;color:var(--red);font-weight:800}
.gov__grid p{font-size:13.5px;line-height:1.85;margin-top:6px}

/* ============ 组织架构 ============ */
.org{max-width:1000px;margin:0 auto}
.org__top{width:190px;margin:0 auto;background:var(--red);color:#fff;text-align:center;padding:14px;border-radius:10px;font-size:18px;font-weight:700;box-shadow:0 8px 18px rgba(198,22,29,.22)}
.org__connector{width:2px;height:26px;background:#D9DDE4;margin:0 auto}
.org__row{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:12px;padding-top:26px}
.org__row::before{content:"";position:absolute;top:0;left:8.33%;right:8.33%;height:2px;background:#D9DDE4}
.org__dept{position:relative;text-align:center;background:#fff;border:1px solid var(--line);border-radius:9px;padding:14px 6px;font-size:15px;font-weight:600;color:var(--ink)}
.org__dept::before{content:"";position:absolute;left:50%;top:-26px;width:2px;height:26px;background:#D9DDE4}
.org__dept.is-key{background:var(--red);color:#fff;border-color:var(--red)}
.org__sub{display:grid;grid-template-columns:1fr 2.4fr 1fr 1fr;gap:12px;margin-top:28px;align-items:start}
.org__subcol{display:flex;flex-direction:column;gap:10px}
.org__subcol span{background:#fff;border:1px solid var(--line);border-radius:8px;padding:11px;text-align:center;font-size:13.5px;color:var(--text)}
.org__subcol--main{background:var(--red-soft);border:1px solid #F0D2D4;border-radius:12px;padding:18px;gap:14px}
.org__pill{background:var(--red);color:#fff;text-align:center;border-radius:8px;padding:10px;font-size:15px;font-weight:700}
.org__branch{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.org__branchbox{background:#fff;border-radius:8px;padding:14px 12px;text-align:center}
.org__branchbox b{display:block;font-size:14px;color:var(--ink)}
.org__branchbox small{display:block;margin-top:6px;font-size:11.5px;line-height:1.6;color:var(--muted)}

/* ============ 团队与文化 ============ */
.culture{background:linear-gradient(120deg,#B21219,#C6161D);color:#fff}
.culture__head{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:end;margin-bottom:44px}
.culture__head>p{font-size:15px;line-height:2;color:rgba(255,255,255,.85);max-width:560px;justify-self:end}
.culture__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.culture__grid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;border:3px solid rgba(255,255,255,.7);cursor:zoom-in;transition:transform .3s}
.culture__grid img:hover{transform:translateY(-5px)}
.culture__text{display:grid;grid-template-columns:auto auto 1fr;gap:36px;align-items:center;margin-top:44px;padding-top:36px;border-top:1px solid rgba(255,255,255,.22)}
.culture__stat strong{display:block;font-size:40px;font-weight:800;color:#FFE9A8;line-height:1.1;font-variant-numeric:tabular-nums}
.culture__stat strong small{font-size:16px;margin-left:4px}
.culture__stat span{font-size:13px;color:rgba(255,255,255,.8)}
.culture__copy p{font-size:14px;line-height:1.95;color:rgba(255,255,255,.86);margin-bottom:10px;text-align:justify}

/* ============ 合作伙伴 ============ */
.partner__grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.partner__tag{display:inline-block;background:var(--red-soft);color:var(--red);font-size:13px;font-weight:700;padding:7px 16px;border-radius:999px}
.partner__text h3{margin:18px 0 18px;font-size:28px;color:var(--ink);font-weight:700;line-height:1.5}
.partner__text p{font-size:15px;line-height:2;margin-bottom:14px}
.partner__slogan{color:var(--red);font-weight:700;font-size:17px !important;margin-top:18px !important}
.partner__certs{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.partner__certs span{font-size:13px;color:var(--text);border:1px solid var(--line);border-radius:8px;padding:8px 13px;background:var(--bg-soft)}
.partner__media{position:relative}
.partner__media img{width:100%;height:340px;object-fit:cover;border-radius:14px;box-shadow:var(--shadow);cursor:zoom-in}
.partner__caption{position:absolute;left:0;bottom:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.65));color:#fff;font-size:14px;padding:36px 22px 18px;border-radius:0 0 14px 14px}

/* ============ 联系我们 ============ */
.contact{background:var(--bg-soft)}
.contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.contact__info,.contact__form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px;box-shadow:var(--shadow-sm)}
.contact__info h3{font-size:24px;color:var(--ink);font-weight:700}
.contact__en{margin-top:6px;font-size:11px;letter-spacing:.12em;color:var(--muted)}
.contact__list{margin-top:30px}
.contact__list li{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact__ico{flex:0 0 42px;height:42px;border-radius:50%;background:var(--red-soft);color:var(--red);display:flex;align-items:center;justify-content:center;font-size:19px}
.contact__list small{display:block;font-size:12px;color:var(--muted)}
.contact__list a{display:block;font-size:19px;font-weight:700;color:var(--ink);transition:color .2s}
.contact__list a:hover{color:var(--red)}
.contact__list p{font-size:15px;color:var(--ink);line-height:1.8}
.contact__qr{display:flex;align-items:center;gap:20px;margin-top:28px;background:var(--bg-soft);border-radius:12px;padding:18px}
.contact__qr img{width:104px;height:104px;object-fit:cover;border-radius:8px;background:#fff;border:1px solid var(--line)}
.contact__qr strong{display:block;font-size:17px;color:var(--ink)}
.contact__qr span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.7}
.contact__form h3{font-size:24px;color:var(--ink);font-weight:700}
.contact__formhint{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.8}
.field{margin-top:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field label em{font-style:normal;color:var(--red)}
.field input,.field textarea{width:100%;border:1px solid var(--line);background:#FBFCFD;border-radius:9px;padding:13px 15px;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(198,22,29,.1);background:#fff}
.field input.is-invalid,.field textarea.is-invalid{border-color:var(--red)}
.contact__form .btn{margin-top:26px}
.form-msg{min-height:22px;margin-top:12px;font-size:13px;color:var(--red)}

/* ============ 页脚 ============ */
.footer{background:#1B1F26;color:#AEB5BF}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:48px;padding:70px 0 54px}
.footer__brand img{width:126px;margin-bottom:20px}
.footer__brand p{font-size:13.5px;line-height:2}
.footer__col{display:flex;flex-direction:column;gap:11px}
.footer__col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:8px}
.footer__col a,.footer__col span{font-size:13.5px;line-height:1.9;transition:color .2s}
.footer__col a:hover{color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;font-size:12.5px;color:#7E8794}
.footer__bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ============ 交互组件 ============ */
.to-top{position:fixed;right:26px;bottom:26px;z-index:60;width:46px;height:46px;border:0;border-radius:50%;background:var(--red);color:#fff;font-size:20px;cursor:pointer;box-shadow:0 8px 22px rgba(198,22,29,.32);opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--red-dark)}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(12,14,18,.9);display:flex;align-items:center;justify-content:center;padding:40px;opacity:0;visibility:hidden;transition:opacity .25s}
.lightbox.is-open{opacity:1;visibility:visible}
.lightbox img{max-width:92vw;max-height:86vh;object-fit:contain;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lightbox__close{position:absolute;top:24px;right:32px;width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:28px;line-height:1;cursor:pointer}
.lightbox__close:hover{background:rgba(255,255,255,.28)}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav{gap:16px}
  .nav__link{font-size:14px}
  .hero__inner{gap:36px}
  .hero__title span{white-space:normal}
  .services__grid{grid-template-columns:repeat(2,1fr)}
  .value__grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr);gap:30px}
  .timeline__line{display:none}
  .about__grid{gap:44px}
  .about__media{height:480px}
  .digital__grid{gap:36px}
  .culture__grid{grid-template-columns:repeat(3,1fr)}
  .culture__text{grid-template-columns:auto auto 1fr;gap:22px}
}
@media (max-width:900px){
  .menu-toggle{display:flex}
  .nav{position:absolute;top:78px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 24px;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(20,26,36,.1);display:none}
  .nav.is-open{display:flex}
  .nav__link{padding:13px 4px;border-bottom:1px solid var(--line);font-size:15px}
  .nav__link::after{display:none}
  .nav__cta{margin-top:16px;align-self:flex-start}
  .hero{padding:70px 0 90px}
  .hero__inner{grid-template-columns:1fr;gap:48px;min-height:0}
  .hero__visual{max-width:540px;width:100%;margin:0 auto}
  .hero__badge{left:0;bottom:30px}
  .hero__scroll{display:none}
  .statband__grid{grid-template-columns:repeat(3,1fr);row-gap:22px}
  .statband__item:nth-child(3){border-right:0}
  .about__grid{grid-template-columns:1fr}
  .about__media{height:420px;max-width:560px}
  .digital__grid{grid-template-columns:1fr}
  .digital__visual{min-height:600px}
  .execution{grid-template-columns:1fr;gap:32px;padding:32px}
  .perf__hero{grid-template-columns:1fr 1fr;padding:30px 16px;row-gap:22px}
  .perf__bignum:nth-child(2){border-right:0}
  .perf__cities{grid-column:1/-1;padding-left:0;border-top:1px solid #EBCBCD;padding-top:20px}
  .perf__cards{grid-template-columns:repeat(2,1fr)}
  .perf__gallery{grid-template-columns:repeat(2,1fr)}
  .honors__grid{grid-template-columns:1fr;gap:30px}
  .gov__grid{grid-template-columns:repeat(2,1fr)}
  .org__sub{grid-template-columns:1fr 2fr}
  .org__subcol--main{grid-column:1/-1;order:-1}
  .culture__head{grid-template-columns:1fr;gap:20px}
  .culture__head>p{justify-self:start}
  .culture__text{grid-template-columns:1fr 1fr;gap:22px}
  .culture__copy{grid-column:1/-1}
  .partner__grid{grid-template-columns:1fr;gap:36px}
  .contact__grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:640px){
  .container{width:min(100% - 32px,1200px)}
  .section{padding:68px 0}
  .sec-title{font-size:30px}
  .sec-head{margin-bottom:36px}
  .hero__title{font-size:30px}
  .hero__title span{font-size:27px;letter-spacing:0;white-space:normal}
  .hero__desc{font-size:15px}
  .hero__desc br{display:none}
  .hero__photo img{height:260px}
  .hero__badge{padding:12px 18px;min-width:120px}
  .hero__badge strong{font-size:28px}
  .hero__badge--small{display:none}
  .statband__grid{grid-template-columns:repeat(2,1fr)}
  .statband__item{border-right:0;border-bottom:1px solid var(--line);padding:12px 6px}
  .statband__item:nth-child(3){border-right:0}
  .statband__num{font-size:30px}
  .about__media{height:330px}
  .about__lead{font-size:22px}
  .services__grid,.value__grid,.perf__cards,.perf__gallery,.gov__grid{grid-template-columns:1fr}
  .service-card__img{height:200px}
  .execution__photos{grid-template-columns:repeat(3,1fr);gap:8px}
  .steps span{font-size:14px}
  .digital__title{font-size:28px}
  .digital__visual{min-height:560px;transform:scale(.9)}
  .digital__float--a{left:-10px}
  .digital__float--b{right:-10px}
  .timeline{grid-template-columns:1fr;gap:22px}
  .timeline__item{text-align:left;display:grid;grid-template-columns:70px 1fr;column-gap:10px;align-items:start}
  .timeline__dot{grid-column:1;grid-row:1/3;margin:8px auto 0}
  .timeline__year{grid-column:2;font-size:24px}
  .timeline__body{grid-column:2;margin-top:8px;min-height:0}
  .perf__hero{grid-template-columns:1fr}
  .perf__bignum{border-right:0;border-bottom:1px solid #EBCBCD;padding-bottom:16px}
  .perf__bignum strong{font-size:48px}
  .perf__cities{border-top:0;padding-top:0}
  .perf__gallery img{height:180px}
  .honors{margin-top:60px}
  .honors__head{padding-top:48px}
  .honors__photos img:first-child{height:180px}
  .gov{padding:26px}
  .org__row{grid-template-columns:repeat(3,1fr);gap:8px;padding-top:18px}
  .org__row::before{display:none}
  .org__dept::before{display:none}
  .org__connector{display:none}
  .org__sub{grid-template-columns:1fr 1fr}
  .org__subcol--main{grid-column:1/-1}
  .org__branch{grid-template-columns:1fr}
  .culture__grid{grid-template-columns:repeat(2,1fr)}
  .culture__text{grid-template-columns:1fr 1fr}
  .culture__stat strong{font-size:30px}
  .contact__info,.contact__form{padding:26px}
  .contact__qr{flex-direction:column;align-items:flex-start}
  .footer__grid{grid-template-columns:1fr;gap:30px;padding:50px 0 36px}
  .footer__bottom .container{flex-direction:column;gap:6px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media (max-width:380px){
  .hero__title{font-size:26px}
  .hero__title span{font-size:24px}
  .hero__eyebrow{font-size:12px;padding:7px 12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}