/* ============ 四川中科建防科技有限公司 官网 · 科技风主题 ============ */
:root{
  --bg:#050b18; --bg2:#081124; --panel:rgba(13,27,54,.62); --panel2:rgba(17,34,66,.5);
  --line:rgba(120,170,255,.14); --line2:rgba(120,170,255,.28);
  --red:#e8321f; --red2:#ff5a3c; --red-glow:rgba(232,50,31,.45);
  --blue:#4f8dff; --cyan:#39d2ff;
  --text:#e9f0fc; --dim:#9fb2d4; --dim2:#6d81a8;
  --head-h:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font); color:var(--text); background:var(--bg);
  min-height:100vh; overflow-x:hidden; line-height:1.7; font-size:16px;
  background-image:
    radial-gradient(1100px 500px at 85% -10%, rgba(232,50,31,.13), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(43,108,255,.14), transparent 60%),
    linear-gradient(180deg,#050b18 0%,#071021 45%,#050b18 100%);
}
::selection{background:var(--red);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#071021}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#22345c,#12203f);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#2d4478}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--head-h);
  display:flex;align-items:center;
  background:rgba(5,10,22,.55);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;transition:background .35s,border-color .35s;
}
.topbar.scrolled{background:rgba(5,10,22,.86);border-bottom-color:var(--line)}
.topbar-inner{width:100%;max-width:1280px;margin:0 auto;padding:0 28px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand-logo{height:44px;width:auto;background:#fff;border-radius:8px;padding:3px 6px;box-shadow:0 0 18px rgba(232,50,31,.25)}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--text);white-space:nowrap}
.brand-name em{display:block;font-style:normal;font-size:10px;letter-spacing:2.2px;color:var(--dim2);font-weight:500;margin-top:1px;text-transform:uppercase}
.nav{margin-left:auto;display:flex;gap:4px;align-items:center}
.nav a{
  position:relative;padding:9px 15px;font-size:15px;color:var(--dim);border-radius:8px;
  transition:color .25s,background .25s;white-space:nowrap;
}
.nav a:hover{color:var(--text);background:rgba(120,170,255,.08)}
.nav a.active{color:#fff}
.nav a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--red2));box-shadow:0 0 10px var(--red-glow);
}
.nav-cta{
  margin-left:10px;padding:10px 22px;font-size:14.5px;font-weight:600;color:#fff;border-radius:10px;
  background:linear-gradient(135deg,var(--red) 0%,#b31f10 100%);
  box-shadow:0 4px 20px rgba(232,50,31,.35),inset 0 1px 0 rgba(255,255,255,.18);
  transition:transform .25s,box-shadow .25s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(232,50,31,.5),inset 0 1px 0 rgba(255,255,255,.18)}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line2);border-radius:10px;width:42px;height:42px;position:relative}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;transform:translateX(-50%);transition:.3s}
.menu-btn span{top:50%;margin-top:-1px}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
body.menu-open .menu-btn span{background:transparent}
body.menu-open .menu-btn span::before{top:0;transform:translateX(-50%) rotate(45deg)}
body.menu-open .menu-btn span::after{top:0;transform:translateX(-50%) rotate(-45deg)}

/* ---------- 通用布局 ---------- */
#view{padding-top:var(--head-h)}
.wrap{max-width:1280px;margin:0 auto;padding:0 28px}
.section{padding:96px 0;position:relative}
.section-tight{padding:72px 0}
.sec-head{max-width:720px;margin-bottom:56px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:3px;color:var(--cyan);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.kicker::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--red),var(--cyan));border-radius:2px;box-shadow:0 0 8px var(--cyan)}
.sec-title{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:1px;line-height:1.25}
.sec-title .grad{background:linear-gradient(92deg,#fff 20%,#bcd6ff 55%,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{margin-top:16px;color:var(--dim);font-size:16.5px}
.sec-sub.center{text-align:center}

/* 页内 hero（非首页） */
.page-hero{
  position:relative;padding:110px 0 80px;text-align:center;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(700px 300px at 50% -80px, rgba(232,50,31,.16), transparent 70%),
    linear-gradient(180deg, rgba(10,20,44,.5), transparent);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,170,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 70% 90% at 50% 0%,#000 30%,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 90% at 50% 0%,#000 30%,transparent 75%);
}
.page-hero h1{font-size:clamp(34px,5vw,56px);font-weight:800;letter-spacing:3px}
.page-hero h1 .hl{background:linear-gradient(92deg,var(--red2),#ffb3a0);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{margin:18px auto 0;max-width:640px;color:var(--dim);font-size:17px}
.page-hero .hero-glow{position:absolute;left:50%;top:-140px;width:520px;height:280px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(232,50,31,.22),transparent);filter:blur(20px);pointer-events:none}

/* ---------- 首页 HERO ---------- */
.hero{
  position:relative;min-height:calc(100vh - var(--head-h));display:flex;align-items:center;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 30%,#000 20%,transparent 78%);
  mask-image:radial-gradient(ellipse 90% 80% at 50% 30%,#000 20%,transparent 78%);
  animation:gridDrift 26s linear infinite;
}
@keyframes gridDrift{from{background-position:0 0,0 0}to{background-position:64px 64px,64px 64px}}
.hero-orb{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none}
.hero-orb.a{width:560px;height:560px;right:-140px;top:-120px;background:radial-gradient(closest-side,rgba(232,50,31,.30),transparent);animation:float1 11s ease-in-out infinite}
.hero-orb.b{width:460px;height:460px;left:-120px;bottom:-140px;background:radial-gradient(closest-side,rgba(43,108,255,.26),transparent);animation:float2 13s ease-in-out infinite}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(-36px,30px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(34px,-26px)}}
.hero-inner{position:relative;width:100%;max-width:1280px;margin:0 auto;padding:60px 28px 90px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:8px 18px;border-radius:999px;font-size:13.5px;letter-spacing:1.5px;
  color:#cfe0ff;background:rgba(20,40,80,.5);border:1px solid var(--line2);backdrop-filter:blur(8px);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--red2);box-shadow:0 0 10px var(--red-glow);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero-title{margin:26px 0 8px;font-size:clamp(40px,6vw,74px);font-weight:900;line-height:1.16;letter-spacing:2px}
.hero-title .t1{display:block}
.hero-title .t2{display:block;background:linear-gradient(94deg,var(--red2) 5%,#ffd7cf 34%,var(--cyan) 90%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 24px rgba(232,50,31,.25))}
.hero-sub{margin:22px 0 0;max-width:560px;color:var(--dim);font-size:17.5px}
.hero-actions{display:flex;gap:18px;margin-top:42px;flex-wrap:wrap}
.btn{
  position:relative;display:inline-flex;align-items:center;gap:10px;padding:15px 34px;border-radius:12px;font-size:16px;font-weight:600;letter-spacing:1px;
  transition:transform .28s,box-shadow .28s,background .28s;overflow:hidden;
}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--red) 0%,#9c180c 100%);box-shadow:0 6px 26px rgba(232,50,31,.4),inset 0 1px 0 rgba(255,255,255,.2)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(232,50,31,.55),inset 0 1px 0 rgba(255,255,255,.2)}
.btn-primary::after{content:"";position:absolute;top:0;bottom:0;width:46px;background:linear-gradient(105deg,transparent,rgba(255,255,255,.35),transparent);left:-70px;transform:skewX(-20deg);transition:left .6s}
.btn-primary:hover::after{left:130%}
.btn-ghost{color:var(--text);background:rgba(20,40,80,.35);border:1px solid var(--line2);backdrop-filter:blur(8px)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--cyan);box-shadow:0 0 24px rgba(57,210,255,.18);color:#fff}
/* hero 右侧视觉 */
.hero-visual{position:relative;display:flex;justify-content:center}
.shield-frame{
  position:relative;width:min(400px,88%);aspect-ratio:1/1.06;
  display:flex;align-items:center;justify-content:center;
}
.shield-frame .ring{
  position:absolute;inset:0;border-radius:50%;border:1px dashed rgba(120,170,255,.35);animation:spin 30s linear infinite;
}
.shield-frame .ring::before{content:"";position:absolute;top:-4px;left:50%;width:8px;height:8px;margin-left:-4px;border-radius:50%;background:var(--red2);box-shadow:0 0 14px var(--red-glow)}
.shield-frame .ring.r2{inset:9%;border-style:solid;border-color:rgba(120,170,255,.16);animation:spinRev 22s linear infinite}
.shield-frame .ring.r2::before{background:var(--cyan);box-shadow:0 0 14px rgba(57,210,255,.6)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes spinRev{to{transform:rotate(-360deg)}}
.shield-core{
  position:relative;width:62%;aspect-ratio:1/1.08;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(closest-side,rgba(17,34,66,.9),rgba(8,17,36,.4));
  border:1px solid var(--line2);border-radius:24%;
  box-shadow:0 0 60px rgba(43,108,255,.25),inset 0 0 40px rgba(10,22,48,.8);
  backdrop-filter:blur(6px);
  animation:coreFloat 6s ease-in-out infinite;
}
@keyframes coreFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.shield-core img{width:58%;filter:drop-shadow(0 6px 30px rgba(232,50,31,.5));border-radius:10px}
.hud-chip{
  position:absolute;padding:9px 16px;font-size:12.5px;letter-spacing:1px;color:#cfe0ff;border-radius:10px;
  background:rgba(13,27,54,.8);border:1px solid var(--line2);backdrop-filter:blur(10px);white-space:nowrap;
  box-shadow:0 8px 30px rgba(0,0,0,.35);animation:chipFloat 7s ease-in-out infinite;
}
.hud-chip i{font-style:normal;color:var(--cyan)}
.hud-chip.c1{top:6%;left:-4%}
.hud-chip.c2{bottom:14%;right:-6%;animation-delay:1.6s}
.hud-chip.c3{top:44%;right:-10%;animation-delay:3s}
@keyframes chipFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:var(--dim2);font-size:12px;letter-spacing:2px;display:flex;flex-direction:column;align-items:center;gap:8px}
.hero-scroll .mouse{width:22px;height:36px;border:1.5px solid var(--dim2);border-radius:12px;position:relative}
.hero-scroll .mouse::before{content:"";position:absolute;top:6px;left:50%;width:3px;height:7px;margin-left:-1.5px;border-radius:3px;background:var(--red2);animation:wheel 1.8s ease-in-out infinite}
@keyframes wheel{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(10px)}}

/* ---------- 数据带 ---------- */
.stats-band{border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(13,27,54,.4),rgba(8,17,36,.25))}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:52px 28px;max-width:1280px;margin:0 auto}
.stat{text-align:center;position:relative}
.stat + .stat::before{content:"";position:absolute;left:-12px;top:18%;bottom:18%;width:1px;background:linear-gradient(180deg,transparent,var(--line2),transparent)}
.stat-num{font-size:clamp(34px,4vw,52px);font-weight:800;font-variant-numeric:tabular-nums;background:linear-gradient(180deg,#fff,#8fb4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-num .sfx{color:var(--red2);-webkit-text-fill-color:var(--red2);font-size:.62em;margin-left:2px}
.stat-label{margin-top:6px;color:var(--dim);font-size:14.5px;letter-spacing:2px}

/* ---------- 玻璃卡片 ---------- */
.glass{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:18px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;transition:transform .35s,border-color .35s,box-shadow .35s;
}
.glass::before{content:"";position:absolute;top:0;left:8%;right:8%;height:1px;background:linear-gradient(90deg,transparent,rgba(120,170,255,.5),transparent);opacity:.7}
.glass:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:0 18px 50px rgba(2,6,16,.6),0 0 0 1px rgba(120,170,255,.08) inset}
.glass::after{ /* 角标装饰 */
  content:"";position:absolute;right:10px;top:10px;width:18px;height:18px;
  border-top:2px solid rgba(232,50,31,.55);border-right:2px solid rgba(232,50,31,.55);border-radius:0 6px 0 0;
}
.card-grid{display:grid;gap:26px}
.cards-1{grid-template-columns:1fr;max-width:900px;margin:0 auto}
.cards-2{grid-template-columns:repeat(2,1fr)}
.cards-3{grid-template-columns:repeat(3,1fr)}
.cards-4{grid-template-columns:repeat(4,1fr)}
.card{padding:34px 30px;display:flex;flex-direction:column;gap:14px}
.card .c-icon{
  width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(232,50,31,.18),rgba(43,108,255,.14));border:1px solid var(--line2);
  color:var(--red2);box-shadow:0 0 24px rgba(232,50,31,.15),inset 0 0 18px rgba(43,108,255,.12);
}
.card .c-icon svg{width:28px;height:28px}
.card h3{font-size:19.5px;font-weight:700;letter-spacing:.5px}
.card p{color:var(--dim);font-size:14.8px;line-height:1.75}
.card .c-link{margin-top:auto;padding-top:8px;color:var(--cyan);font-size:14px;display:inline-flex;align-items:center;gap:6px;opacity:.9}
.card .c-link svg{width:15px;height:15px;transition:transform .3s}
.card:hover .c-link svg{transform:translateX(4px)}
.card--wide{flex-direction:row;align-items:flex-start;gap:24px}
.card--wide .c-icon{flex-shrink:0}

/* ---------- 图文内容 ---------- */
.content-block{max-width:900px;margin:0 auto}
.content-block.center{ text-align:center }
.content-block .b-icon{
  width:60px;height:60px;margin:0 auto 22px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(232,50,31,.2),rgba(43,108,255,.16));border:1px solid var(--line2);color:var(--red2);
}
.content-block.left .b-icon{margin-left:0}
.content-block.right .b-icon{margin-right:0;margin-left:auto}
.content-block h3{font-size:26px;font-weight:700;margin-bottom:6px}
.content-block .b-sub{color:var(--cyan);letter-spacing:2px;font-size:13.5px;text-transform:uppercase;margin-bottom:18px}
.content-block .b-body{color:#c6d4ee;font-size:16.5px;white-space:pre-line}
.content-block .b-body p{margin-bottom:14px}

/* ---------- 图片展示 ---------- */
.gallery-grid{display:grid;gap:22px}
.gallery-grid.g-3{grid-template-columns:repeat(3,1fr)}
.gallery-grid.g-4{grid-template-columns:repeat(4,1fr)}
.g-item{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--panel2);aspect-ratio:4/3;transition:transform .35s,border-color .35s,box-shadow .35s}
.g-item:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:0 16px 44px rgba(2,6,16,.6)}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.g-item:hover img{transform:scale(1.06)}
.g-item .cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;font-size:13.5px;color:#dbe7ff;letter-spacing:.5px;
  background:linear-gradient(180deg,transparent,rgba(4,9,20,.92) 55%);
}
.g-item .cap::before{content:"";display:inline-block;width:16px;height:2px;background:var(--red2);vertical-align:middle;margin-right:8px;border-radius:2px}
.g-item .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--dim2);font-size:13px;background:linear-gradient(145deg,#0b1830,#081226)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;text-align:center;padding:80px 32px;
  background:
    radial-gradient(600px 260px at 50% -60px,rgba(232,50,31,.28),transparent 70%),
    linear-gradient(135deg,rgba(19,38,76,.75),rgba(9,18,38,.85));
  border:1px solid var(--line2);
}
.cta-band h3{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:2px}
.cta-band p{margin:16px auto 34px;max-width:560px;color:var(--dim)}
.cta-band .btn{margin:0 auto}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:860px;margin:0 auto;padding-left:0}
.timeline::before{content:"";position:absolute;left:50%;top:8px;bottom:8px;width:2px;margin-left:-1px;background:linear-gradient(180deg,transparent,var(--red) 12%,var(--blue) 88%,transparent)}
.tl-item{position:relative;width:50%;padding:0 44px 54px 0;text-align:right}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 54px 44px;text-align:left}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;top:4px;right:-9px;width:20px;height:20px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--red2),var(--red) 60%);
  border:3px solid #0a1428;box-shadow:0 0 0 3px rgba(232,50,31,.3),0 0 18px var(--red-glow);z-index:2;
}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-9px}
.tl-year{
  display:inline-block;font-size:15px;font-weight:800;letter-spacing:1px;color:#fff;padding:4px 14px;border-radius:8px;
  background:linear-gradient(135deg,rgba(232,50,31,.3),rgba(43,108,255,.25));border:1px solid var(--line2);margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.tl-item h4{font-size:18px;font-weight:700;margin-bottom:6px}
.tl-item p{color:var(--dim);font-size:14.5px}

/* ---------- 表单 ---------- */
.form-panel{max-width:760px;margin:0 auto;padding:44px 40px}
.form-panel h3{font-size:24px;font-weight:700;margin-bottom:6px}
.form-panel .f-sub{color:var(--dim);font-size:14.5px;margin-bottom:30px}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.f-item{display:flex;flex-direction:column;gap:8px}
.f-item.full{grid-column:1/-1}
.f-item label{font-size:14px;color:#c6d4ee;letter-spacing:.5px}
.f-item label b{color:var(--red2);font-weight:400;margin-left:2px}
.f-item input,.f-item select,.f-item textarea{
  font-family:inherit;font-size:15px;color:var(--text);background:rgba(7,15,32,.7);
  border:1px solid var(--line2);border-radius:10px;padding:13px 16px;transition:border-color .25s,box-shadow .25s;width:100%;
}
.f-item textarea{min-height:130px;resize:vertical}
.f-item select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--dim) 50%),linear-gradient(135deg,var(--dim) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px;background-repeat:no-repeat}
.f-item select option{background:#0a1428;color:var(--text)}
.f-item input:focus,.f-item select:focus,.f-item textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(232,50,31,.15)}
.f-item input.err,.f-item textarea.err,.f-item select.err{border-color:#ff5a3c;box-shadow:0 0 0 3px rgba(255,90,60,.15)}
.f-actions{margin-top:30px;display:flex;align-items:center;gap:18px}
.f-msg{font-size:14px}
.f-msg.ok{color:#5fd39a}
.f-msg.err{color:#ff8f7a}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{padding:26px 30px;cursor:pointer;user-select:none}
.faq-item .q{display:flex;align-items:center;gap:14px;font-size:16.5px;font-weight:600}
.faq-item .q .mark{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(232,50,31,.35),rgba(43,108,255,.3));color:#fff;font-size:15px;font-weight:700;transition:transform .35s;
}
.faq-item .a{max-height:0;overflow:hidden;transition:max-height .4s ease;color:var(--dim);font-size:15px;margin-top:0}
.faq-item.open .a{max-height:400px;margin-top:14px}
.faq-item.open .q .mark{transform:rotate(45deg)}

/* ---------- 联系方式 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;max-width:1080px;margin:0 auto}
.c-item{padding:30px 24px;text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center}
.c-item .c-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--red2);background:linear-gradient(145deg,rgba(232,50,31,.18),rgba(43,108,255,.14));border:1px solid var(--line2)}
.c-item .c-icon svg{width:26px;height:26px}
.c-item h4{font-size:15px;color:var(--dim);letter-spacing:2px;font-weight:500}
.c-item p{font-size:15.5px;color:var(--text);word-break:break-all}
.map-box{max-width:1080px;margin:44px auto 0;height:auto;border-radius:18px;overflow:hidden;border:1px solid var(--line);position:relative;background:linear-gradient(135deg,rgba(19,38,76,.5),rgba(9,18,38,.7))}
.loc-card{display:flex;align-items:center;gap:26px;padding:34px 38px;flex-wrap:wrap}
.loc-ico{width:70px;height:70px;border-radius:18px;display:flex;align-items:center;justify-content:center;color:var(--red2);background:radial-gradient(closest-side,rgba(232,50,31,.3),rgba(43,108,255,.12));border:1px solid var(--line2);box-shadow:0 0 30px rgba(232,50,31,.2);flex-shrink:0}
.loc-ico svg{width:34px;height:34px}
.loc-t{flex:1;min-width:200px}
.loc-t h4{font-size:13px;letter-spacing:2px;color:var(--dim);margin-bottom:8px}
.loc-t p{font-size:18px;font-weight:600;letter-spacing:.5px}
.loc-t span{display:inline-flex;align-items:center;gap:7px;margin-top:12px;font-size:13.5px;color:var(--dim)}
.loc-t span svg{width:15px;height:15px;color:var(--cyan)}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(8,17,36,.5),rgba(5,10,22,.9));margin-top:0}
.footer-inner{max-width:1280px;margin:0 auto;padding:64px 28px 30px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.f-brand{display:flex;flex-direction:column;gap:16px}
.f-brand .brand-name{font-size:18px}
.f-brand p{color:var(--dim);font-size:14px;max-width:420px}
.f-col h5{font-size:14px;letter-spacing:2px;color:#c6d4ee;margin-bottom:18px;font-weight:600}
.f-col h5::before{content:"";display:inline-block;width:14px;height:2px;background:var(--red2);vertical-align:middle;margin-right:8px;border-radius:2px}
.f-col a{display:block;color:var(--dim);font-size:14.5px;padding:5px 0;transition:color .25s,transform .25s}
.f-col a:hover{color:#fff;transform:translateX(4px)}
.f-col .fline{color:var(--dim);font-size:14px;padding:5px 0}
.f-col .fline svg{width:15px;height:15px;vertical-align:-2px;margin-right:8px;color:var(--red2)}
.footer-bar{border-top:1px solid var(--line);padding:20px 28px;text-align:center;color:var(--dim2);font-size:13px;letter-spacing:.5px}
.footer-bar .sep{margin:0 10px;opacity:.5}

/* ---------- 其它 ---------- */
.to-top{
  position:fixed;right:26px;bottom:30px;z-index:90;width:46px;height:46px;border-radius:12px;border:1px solid var(--line2);
  background:rgba(13,27,54,.8);backdrop-filter:blur(10px);color:var(--dim);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(12px);transition:.35s;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{color:#fff;border-color:var(--red);box-shadow:0 0 20px rgba(232,50,31,.3)}
.boot{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;min-height:60vh;color:var(--dim2);font-size:14px;letter-spacing:2px}
.boot-ring{width:44px;height:44px;border-radius:50%;border:3px solid rgba(120,170,255,.15);border-top-color:var(--red2);animation:spin 1s linear infinite}
.notfound{min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}
.notfound .code{font-size:90px;font-weight:900;background:linear-gradient(180deg,#fff,#3d5c96);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 滚动进场 ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:translateY(0)}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1;transform:scale(.8)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:34px 18px}
  .stat:nth-child(3)::before{display:none}
  .cards-3,.cards-4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  :root{--head-h:62px}
  .brand-name{font-size:16px}
  .brand-name em{display:none}
  .brand-logo{height:38px}
  .menu-btn{display:block}
  .nav{
    position:fixed;top:var(--head-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(6,12,26,.97);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);
    padding:14px 18px 20px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:.3s;
  }
  body.menu-open .nav{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav a{padding:13px 14px;font-size:16px}
  .nav a.active::after{display:none}
  .nav-cta{margin:10px 0 0;text-align:center}
  .section{padding:70px 0}
  .wrap{padding:0 18px}
  .topbar-inner{padding:0 18px}
  .cards-2,.cards-3,.cards-4,.gallery-grid.g-3,.gallery-grid.g-4{grid-template-columns:1fr}
  .card{padding:28px 24px}
  .card--wide{flex-direction:column;gap:16px}
  .f-grid{grid-template-columns:1fr}
  .form-panel{padding:32px 22px}
  .timeline::before{left:9px}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 44px 36px;text-align:left}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:0;right:auto}
  .hero{min-height:auto;padding:40px 0 70px}
  .hero-inner{padding:30px 18px 50px}
  .hero-visual{display:none}
  .page-hero{padding:80px 0 56px}
  .stats-grid{padding:40px 18px}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:34px;padding:48px 22px 24px}
  .to-top{right:16px;bottom:20px}
  .hud-chip{display:none}
  .loc-card{padding:26px 22px;gap:18px}
  .cta-band{padding:56px 22px}
}