/* ============================================================
   广州必维技术检测 — 全新设计 (Redesign)
   深色高级感 · 翡翠绿品牌色 · 现代排版
   ============================================================ */
:root{
  --bg:#16261f;            /* 浅墨绿（提亮） */
  --bg-2:#1b2e26;
  --bg-3:#213730;
  --surface:#1f352b;
  --card:#223a2f;
  --card-2:#284538;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.18);
  --txt:#f2f8f4;
  --txt-2:#c3d4ca;
  --muted:#8fa89b;
  --brand:#1fd3a7;         /* 亮翡翠绿 */
  --brand-2:#14b78e;
  --brand-soft:rgba(31,211,167,.14);
  --gold:#e6c878;
  --grad:linear-gradient(120deg,#1fd3a7 0%,#14b78e 55%,#0ea87f 100%);
  --grad-text:linear-gradient(120deg,#6ff5cf,#1fd3a7 60%,#14b78e);
  --shadow:0 18px 50px rgba(0,0,0,.35);
  --shadow-sm:0 6px 20px rgba(0,0,0,.25);
  --r:16px; --r-lg:24px; --r-sm:10px;
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--txt);
  line-height:1.7;
  -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:rgba(23,195,154,.35);color:#fff}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#17c39a,#0a8f6d);border-radius:8px;border:2px solid var(--bg)}

/* ---------- 背景氛围 ---------- */
.bg-aura{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(31,211,167,.16), transparent 60%),
    radial-gradient(700px 500px at -10% 20%, rgba(31,211,167,.10), transparent 55%),
    radial-gradient(800px 600px at 50% 110%, rgba(14,184,142,.12), transparent 60%),
    var(--bg);
}
.bg-grid{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000,transparent 75%);
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);
  background:rgba(22,38,31,.72);border-bottom:1px solid var(--line);
  transition:background .3s;}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;font-weight:700;font-size:19px;letter-spacing:.02em}
.logo-badge{width:44px;height:40px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:#04241b;
  letter-spacing:.02em;box-shadow:0 6px 18px rgba(31,211,167,.4)}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.14em}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:9px 16px;border-radius:99px;color:var(--txt-2);font-size:15px;font-weight:500;
  transition:.25s;position:relative}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:#fff;background:var(--brand-soft);}
.nav-cta{padding:10px 22px !important;background:var(--grad);color:#04241b !important;font-weight:700;
  box-shadow:0 8px 22px rgba(23,195,154,.35)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(23,195,154,.5)}
.burger{display:none;background:none;border:none;color:#fff;font-size:26px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding:140px 0 80px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:99px;
  background:var(--brand-soft);border:1px solid rgba(23,195,154,.3);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.08em}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 12px var(--brand);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(38px,5.2vw,64px);line-height:1.12;font-weight:800;letter-spacing:-.01em;margin:24px 0 20px}
.hero h1 .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:var(--txt-2);max-width:560px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;padding:15px 32px;border-radius:13px;
  font-weight:700;font-size:16px;transition:.28s;cursor:pointer;border:none}
.btn-primary{background:var(--grad);color:#04241b;box-shadow:0 12px 32px rgba(23,195,154,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 42px rgba(23,195,154,.5)}
.btn-ghost{background:rgba(255,255,255,.05);color:#fff;border:1px solid var(--line-2)}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.hero-stats{display:flex;gap:44px;margin-top:56px;flex-wrap:wrap}
.stat b{font-size:34px;font-weight:800;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;font-size:14px;color:var(--muted);margin-top:2px}
/* Hero 视觉 */
.hero-visual{position:relative}
.hero-card{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--line-2);aspect-ratio:4/4.4}
.hero-card img{width:100%;height:100%;object-fit:cover}
.hero-card::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,18,16,.85));}
.hero-float{position:absolute;background:rgba(19,36,29,.85);backdrop-filter:blur(12px);
  border:1px solid var(--line-2);border-radius:var(--r);padding:16px 20px;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;gap:13px}
.hero-float .ic{width:42px;height:42px;border-radius:11px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;font-size:20px}
.hero-float b{display:block;font-size:15px}
.hero-float span{font-size:12.5px;color:var(--muted)}
.hf-1{top:36px;left:-34px;animation:float 5s ease-in-out infinite}
.hf-2{bottom:52px;right:-28px;animation:float 6s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* ---------- 板块通用 ---------- */
section{padding:96px 0;position:relative}
.sec-head{text-align:center;max-width:640px;margin:0 auto 60px}
.sec-tag{display:inline-block;padding:6px 16px;border-radius:99px;background:var(--brand-soft);
  color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.1em;margin-bottom:16px}
.sec-head h2{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:-.01em}
.sec-head p{color:var(--txt-2);margin-top:14px;font-size:16.5px}

/* ---------- 服务领域 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:28px 24px;transition:.32s;position:relative;overflow:hidden;cursor:pointer}
.svc-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:.35s}
.svc-card:hover{transform:translateY(-8px);background:var(--card-2);border-color:rgba(23,195,154,.35);
  box-shadow:var(--shadow)}
.svc-card:hover::before{transform:scaleX(1)}
.svc-ic{width:52px;height:52px;border-radius:13px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  transition:.3s;color:var(--brand)}
.svc-ic svg{width:26px;height:26px}
.svc-card:hover .svc-ic{background:var(--grad);transform:scale(1.08);color:#04241b}
.svc-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.svc-card p{font-size:14px;color:var(--muted);line-height:1.6}
.svc-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;
  color:var(--brand);font-weight:600;opacity:0;transform:translateX(-6px);transition:.3s}
.svc-card:hover .more{opacity:1;transform:translateX(0)}

/* ---------- 服务领域弹窗 ---------- */
.svc-modal{position:fixed;inset:0;z-index:999;display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:.3s}
.svc-modal.show{opacity:1;pointer-events:auto}
.svc-modal-mask{position:absolute;inset:0;background:rgba(0,0,0,.75);backdrop-filter:blur(8px)}
.svc-modal-box{position:relative;background:var(--card);border:1px solid var(--line-2);border-radius:var(--r-lg);
  max-width:640px;width:90%;max-height:85vh;overflow-y:auto;padding:40px;
  transform:scale(.9) translateY(20px);transition:.3s;box-shadow:var(--shadow)}
.svc-modal.show .svc-modal-box{transform:scale(1) translateY(0)}
.svc-modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  background:var(--bg-3);border:1px solid var(--line);color:var(--txt);font-size:24px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.25s;line-height:1}
.svc-modal-close:hover{background:var(--brand);color:#04241b;transform:rotate(90deg)}
.svc-modal-head{text-align:center;margin-bottom:28px}
.svc-modal-icon{width:72px;height:72px;margin:0 auto 18px;border-radius:18px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand)}
.svc-modal-icon svg{width:36px;height:36px}
.svc-modal-head h3{font-size:26px;font-weight:800;margin-bottom:10px}
.svc-modal-head p{color:var(--txt-2);font-size:15px;line-height:1.6}
.svc-modal-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.svc-modal-item{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg-2);
  border-radius:var(--r-sm);font-size:14px;color:var(--txt-2)}
.svc-modal-item .ck{color:var(--brand);font-weight:700;font-size:16px;flex-shrink:0}

/* ---------- 服务项目（大卡片横排） ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{border-radius:var(--r-lg);overflow:hidden;position:relative;aspect-ratio:3/3.6;
  border:1px solid var(--line-2);cursor:pointer;box-shadow:var(--shadow-sm);transition:.35s}
.feat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.feat-card img{width:100%;height:100%;object-fit:cover;transition:.6s}
.feat-card:hover img{transform:scale(1.07)}
.feat-card .ov{position:absolute;inset:0;background:linear-gradient(185deg,transparent 30%,rgba(8,15,13,.92) 75%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:28px}
.feat-card .num{position:absolute;top:22px;left:24px;font-size:15px;font-weight:800;color:var(--brand);
  background:rgba(8,15,13,.6);backdrop-filter:blur(6px);padding:5px 13px;border-radius:99px;border:1px solid rgba(23,195,154,.3)}
.feat-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--txt-2)}

/* ---------- 我们的优势 ---------- */
.adv{background:var(--bg-2);border-radius:var(--r-lg);padding:64px 48px;
  border:1px solid var(--line);position:relative;overflow:hidden}
.adv::before{content:"";position:absolute;top:-120px;right:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,195,154,.16),transparent 70%)}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;position:relative}
.adv-item{text-align:center}
.adv-item .ic{width:74px;height:74px;margin:0 auto 20px;border-radius:20px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#04241b;
  box-shadow:0 12px 30px rgba(23,195,154,.35);transition:.3s}
.adv-item .ic svg{width:34px;height:34px}
.adv-item:hover .ic{transform:translateY(-6px) scale(1.05)}
.adv-item h3{font-size:18px;font-weight:700;margin-bottom:9px}
.adv-item p{font-size:14px;color:var(--muted)}

/* ---------- 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-imgs{position:relative}
.about-imgs .main{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line-2)}
.about-imgs .main img{aspect-ratio:4/3.4;object-fit:cover;width:100%}
.about-imgs .sub{position:absolute;bottom:-36px;right:-24px;width:46%;border-radius:var(--r);
  overflow:hidden;border:5px solid var(--bg);box-shadow:var(--shadow)}
.about-imgs .sub img{aspect-ratio:1/1;object-fit:cover}
.about-exp{position:absolute;top:-24px;left:-20px;background:var(--grad);color:#04241b;
  border-radius:var(--r);padding:18px 24px;text-align:center;box-shadow:0 14px 34px rgba(23,195,154,.4)}
.about-exp b{font-size:32px;font-weight:800;display:block;line-height:1}
.about-exp span{font-size:13px;font-weight:600}
.about-txt h2{font-size:clamp(28px,3.4vw,40px);font-weight:800;margin-bottom:22px;letter-spacing:-.01em}
.about-txt p{color:var(--txt-2);margin-bottom:16px;font-size:16px}
.about-points{margin:28px 0 34px;display:grid;gap:14px}
.about-points li{display:flex;gap:13px;align-items:flex-start}
.about-points .ck{width:24px;height:24px;flex:none;border-radius:8px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;margin-top:3px}

/* ---------- 实验设备 ---------- */
.equip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.equip-item{border-radius:var(--r);overflow:hidden;position:relative;aspect-ratio:1/1.05;
  border:1px solid var(--line);cursor:pointer}
.equip-item img{width:100%;height:100%;object-fit:cover;transition:.5s}
.equip-item:hover img{transform:scale(1.08)}
.equip-item .cap{position:absolute;inset:auto 0 0 0;padding:16px;
  background:linear-gradient(180deg,transparent,rgba(8,15,13,.9));font-size:14px;font-weight:600;
  transform:translateY(8px);opacity:.9;transition:.3s}
.equip-item:hover .cap{transform:translateY(0);opacity:1}

/* ---------- 报告查询 ---------- */
.query-sec{background:var(--bg-2);border-radius:var(--r-lg);padding:72px 48px;text-align:center;
  border:1px solid var(--line);position:relative;overflow:hidden}
.query-sec::before{content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 50% -20%,rgba(23,195,154,.16),transparent 65%)}
.query-sec h2{font-size:clamp(28px,3.4vw,40px);font-weight:800;margin-bottom:14px;position:relative}
.query-sec>p{color:var(--txt-2);max-width:520px;margin:0 auto 40px;position:relative}
.query-box{display:flex;gap:14px;max-width:560px;margin:0 auto;position:relative}
.query-box input{flex:1;padding:17px 22px;border-radius:13px;border:1.5px solid var(--line-2);
  background:rgba(255,255,255,.05);color:#fff;font-size:16px;outline:none;transition:.25s;font-family:var(--font)}
.query-box input::placeholder{color:var(--muted)}
.query-box input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,195,154,.18);background:rgba(255,255,255,.08)}
.query-hint{margin-top:20px;font-size:13.5px;color:var(--muted);position:relative}
.query-hint code{background:rgba(255,255,255,.07);padding:2px 9px;border-radius:6px;color:var(--brand);font-size:12.5px}

/* ---------- 页脚 ---------- */
footer{background:var(--bg-2);border-top:1px solid var(--line);padding:64px 0 32px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;margin-bottom:48px}
.foot-brand p{color:var(--muted);font-size:14.5px;margin-top:18px;max-width:320px}
.foot-col h4{font-size:16px;font-weight:700;margin-bottom:20px;color:#fff}
.foot-col ul{display:grid;gap:12px}
.foot-col a{color:var(--muted);font-size:14.5px;transition:.2s}
.foot-col a:hover{color:var(--brand);padding-left:5px}
.foot-contact li{display:flex;gap:11px;color:var(--muted);font-size:14.5px;margin-bottom:14px;align-items:flex-start}
.foot-contact .ic{color:var(--brand);flex:none;margin-top:2px;width:18px;height:18px}
.foot-contact .ic svg{width:100%;height:100%}
.foot-bottom{border-top:1px solid var(--line);padding-top:28px;text-align:center;
  color:var(--muted);font-size:13.5px}

/* ---------- 入场动效 ---------- */
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.js-anim .reveal{opacity:0;transform:translateY(30px)}
.js-anim .reveal.in{opacity:1;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr);gap:44px}
  .equip-grid{grid-template-columns:repeat(3,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:70px}
  .hero-visual{max-width:520px;margin:0 auto}
  .about-grid{grid-template-columns:1fr;gap:80px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{position:fixed;top:72px;right:0;left:0;background:rgba(10,18,16,.98);
    flex-direction:column;padding:20px;gap:8px;transform:translateY(-150%);transition:.35s;
    border-bottom:1px solid var(--line)}
  .nav-links.open{transform:translateY(0)}
  .burger{display:block}
  .svc-grid,.feat-grid,.equip-grid{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .query-box{flex-direction:column}
  section{padding:64px 0}
  .hf-1{left:0}.hf-2{right:0}
  .hero-stats{gap:28px}
  .svc-modal-box{padding:28px 20px}
  .svc-modal-list{grid-template-columns:1fr}
  .svc-modal-head h3{font-size:22px}
}


/* ---------- 查询页 ---------- */
.query-page{min-height:100vh;display:flex;flex-direction:column}
.query-main{flex:1;display:flex;align-items:center;justify-content:center;padding:140px 24px 80px}
.query-panel{width:100%;max-width:620px;text-align:center;position:relative}
.query-panel .sec-tag{margin-bottom:18px}
.query-panel h1{font-size:clamp(30px,4vw,46px);font-weight:800;letter-spacing:-.01em;margin-bottom:16px}
.query-panel>p{color:var(--txt-2);font-size:16.5px;margin-bottom:44px}
.q-box{display:flex;gap:14px;background:var(--card);border:1px solid var(--line-2);
  border-radius:var(--r-lg);padding:14px;box-shadow:var(--shadow);transition:.3s}
.q-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,211,167,.15),var(--shadow)}
.q-box input{flex:1;background:transparent;border:none;outline:none;color:#fff;
  font-size:17px;padding:14px 16px;font-family:var(--font)}
.q-box .btn{flex:none}
.q-tips{margin-top:34px;display:flex;gap:36px;justify-content:center;flex-wrap:wrap}
.q-tip{display:flex;align-items:center;gap:11px;color:var(--muted);font-size:14.5px}
.q-tip .ic{width:40px;height:40px;flex:none;border-radius:11px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;font-size:18px}
@media(max-width:560px){.q-box{flex-direction:column}.q-box .btn{width:100%;justify-content:center}}

/* ---------- 结果页 ---------- */
.result-wrap{min-height:100vh;display:flex;flex-direction:column;padding-top:110px}
.result-card{max-width:900px;margin:30px auto 80px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);flex:1;width:100%}
.result-head{padding:24px 36px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;
  background:var(--bg-2);flex-wrap:wrap}
.result-head .dot{width:12px;height:12px;border-radius:50%}
.result-head h2{font-size:20px;font-weight:700;flex:1}
.result-body{padding:32px 36px}
.result-row{display:flex;padding:15px 0;border-bottom:1px solid var(--line)}
.result-row:last-child{border:none}
.result-row .k{width:110px;flex:none;color:var(--muted);font-size:15px}
.result-row .v{flex:1;font-size:16px;font-weight:500}
.status-ok{display:inline-flex;align-items:center;gap:7px;color:var(--brand);font-weight:700}
.status-ok::before{content:"✓";width:20px;height:20px;border-radius:50%;background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px}
/* PDF 预览 */
.pdf-box{border-top:1px solid var(--line);background:var(--bg-2)}
.pdf-box .pdf-bar{padding:14px 36px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.pdf-box .pdf-bar span{color:var(--muted);font-size:14px}
.pdf-viewer{background:#d7d9dc;min-height:420px;padding:16px;position:relative}
.pdf-page{background:#fff;border:1px solid rgba(0,0,0,.14);box-shadow:0 4px 16px rgba(0,0,0,.2);
  margin:0 auto 18px;max-width:100%;overflow:hidden;width:max-content}
.pdf-page:last-child{margin-bottom:0}
.pdf-page canvas{background:#fff;display:block;height:auto;max-width:100%}
.pdf-page-label{background:#f6f7f8;border-bottom:1px solid #ddd;color:#5d646b;font-size:12px;
  padding:6px 10px;text-align:center}
.pdf-render-loading{align-items:center;color:#606970;display:flex;flex-direction:column;
  justify-content:center;min-height:390px;text-align:center}
.pdf-render-loading .spin{border-color:rgba(0,0,0,.15);border-top-color:var(--brand);margin-bottom:14px}
.pdf-render-error{align-items:center;color:#343b38;display:flex;flex-direction:column;
  justify-content:center;min-height:390px;padding:40px 20px;text-align:center}
.pdf-render-error .ic{align-items:center;background:#fff3f1;border:1px solid #f2c6bf;border-radius:50%;
  color:#d9534f;display:flex;font-size:22px;font-weight:800;height:52px;justify-content:center;margin-bottom:16px;width:52px}
.pdf-render-error h3{font-size:19px;margin-bottom:8px}
.pdf-render-error p{color:#68716d;margin-bottom:20px;max-width:440px}
.pdf-retry{font-size:14px;padding:10px 22px}
.btn-open{background:rgba(31,211,167,.15);color:var(--brand);padding:8px 18px;border-radius:9px;
  font-size:14px;font-weight:600;transition:.2s}
.btn-open:hover{background:var(--brand);color:#04241b}
.empty{text-align:center;padding:70px 36px}
.empty .ic{font-size:56px;margin-bottom:20px;opacity:.5}
.empty h3{font-size:22px;margin-bottom:12px}
.empty p{color:var(--muted);margin-bottom:8px}
.result-actions{padding:28px 36px;display:flex;gap:14px;border-top:1px solid var(--line)}
.result-actions .btn{flex:1;justify-content:center}
.loading{text-align:center;padding:90px 0;color:var(--muted)}
.loading .spin{width:38px;height:38px;margin:0 auto 18px;border:3px solid var(--line-2);
  border-top-color:var(--brand);border-radius:50%;animation:sp 0.9s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- 可访问性与窄屏补充 ---------- */
.burger:focus-visible,.btn:focus-visible,.btn-open:focus-visible,.nav-links a:focus-visible,
.svc-card:focus-visible,.svc-modal-close:focus-visible{
  outline:3px solid rgba(111,245,207,.8);outline-offset:3px
}
.result-row .v{min-width:0;overflow-wrap:anywhere}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js-anim .reveal{opacity:1;transform:none}
}
@media(max-width:390px){
  .wrap{padding-left:16px;padding-right:16px}
  .nav-inner{padding:0 16px}
  .logo{gap:9px;font-size:16px;min-width:0}
  .logo-badge{width:40px;height:38px;flex:none}
  .logo small{font-size:9px;letter-spacing:.08em}
  .hero{padding:116px 0 58px;min-height:auto}
  .hero-grid{gap:48px}
  .hero h1{font-size:38px}
  .hero p.lead{font-size:16px}
  .hero-actions{display:grid}
  .hero-actions .btn{justify-content:center;width:100%;text-align:center}
  .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:42px}
  .stat b{font-size:29px}
  .adv{padding:44px 20px}
  .about-exp{left:0}
  .about-imgs .sub{right:0}
  .query-sec{padding:48px 18px}
  .query-main{padding:120px 16px 56px}
  .query-panel h1{font-size:31px}
  .query-panel>p{margin-bottom:32px}
  .q-box{padding:10px}
  .q-box input{width:100%;min-width:0;padding:13px 10px}
  .q-tips{gap:18px;justify-content:flex-start;padding:0 8px}
  .result-wrap{padding-top:94px;padding-left:12px;padding-right:12px}
  .result-card{margin:20px auto 52px}
  .result-head,.result-body,.pdf-box .pdf-bar,.result-actions{padding-left:20px;padding-right:20px}
  .result-row{gap:10px}
  .result-row .k{width:84px}
  .pdf-viewer{min-height:360px;padding:8px}
  .pdf-page{margin-bottom:10px}
  .pdf-render-loading,.pdf-render-error{min-height:340px}
  .result-actions{flex-direction:column}
  .result-actions .btn{width:100%;min-height:50px}
  .empty{padding:56px 20px}
}