/* ===== 设计变量 ===== */
:root{
  --navy:#10213d;
  --navy-2:#1b3a63;
  --navy-3:#234d7e;
  --accent:#ff6a13;
  --accent-2:#ff8c42;
  --accent-soft:rgba(255,106,19,.12);
  --ink:#1c2530;
  --muted:#6b7785;
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --line:#e6ecf3;
  --radius:18px;
  --shadow:0 18px 50px rgba(16,33,61,.12);
  --shadow-sm:0 8px 24px rgba(16,33,61,.08);
  --maxw:1180px;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ===== 顶部导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;
  background:var(--navy);
  transition:background .35s var(--ease),box-shadow .35s var(--ease),height .35s var(--ease);
}
body.home .nav{background:rgba(255,255,255,0)}
.nav.scrolled{background:rgba(255,255,255,.92)!important;backdrop-filter:blur(12px);
  box-shadow:0 6px 24px rgba(16,33,61,.08);height:62px}
.nav-inner{max-width:var(--maxw);margin:0 auto;width:100%;padding:0 24px;
  display:flex;align-items:center;justify-content:flex-start}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{height:38px;width:auto;transition:height .35s var(--ease)}
.nav.scrolled .brand-logo{height:32px}
.brand-text{display:flex;flex-direction:column;line-height:1.15;align-items:flex-start}
.brand-text strong{font-size:18px;color:#fff;letter-spacing:.5px;transition:color .35s var(--ease);text-align:left}
.brand-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.7);letter-spacing:.5px;transition:color .35s var(--ease);text-align:left;padding-left:0;margin-left:0}
.nav.scrolled .brand-text strong{color:var(--navy)}
.nav.scrolled .brand-text em{color:var(--muted)}

.menu{display:flex;align-items:center;gap:6px;margin:0 auto}
.menu a{position:relative;padding:10px 16px;font-size:15px;font-weight:500;color:rgba(255,255,255,.88);
  border-radius:10px;transition:color .3s var(--ease),background .3s var(--ease)}
.nav.scrolled .menu a{color:var(--ink)}
.menu a::after{content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease)}
.menu a:hover::after,.menu a.active::after{transform:scaleX(1)}
.menu a:hover{color:#fff}
.nav.scrolled .menu a:hover{color:var(--accent)}
.soon{opacity:.8}

.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s var(--ease)}
.nav.scrolled .hamburger span{background:var(--navy)}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 区块通用 ===== */
.section{padding:96px 0;position:relative;scroll-margin-top:84px}
.section.alt{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:720px;margin:0 auto 54px}
.sec-no{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--accent);
  background:var(--accent-soft);padding:4px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:34px;font-weight:800;color:var(--navy);letter-spacing:.5px}
.sec-sub{margin-top:12px;color:var(--muted);font-size:15px}

/* 滚动渐显 */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===== Hero 首屏 ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;
  background:radial-gradient(120% 120% at 80% 0%,#1b3a63 0%,#10213d 55%,#0a1730 100%);
  color:#fff;overflow:hidden;padding-top:var(--nav-h)}
.hero-bg{position:absolute;inset:0;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(8px);opacity:.5;
  background:radial-gradient(circle at 30% 30%,var(--accent-2),var(--accent));
  animation:float 14s ease-in-out infinite}
.orb-1{width:340px;height:340px;top:-60px;right:-40px;opacity:.35}
.orb-2{width:220px;height:220px;bottom:60px;left:-60px;animation-delay:-4s;opacity:.28}
.orb-3{width:140px;height:140px;top:40%;left:42%;animation-delay:-8s;opacity:.22}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(20px,-30px) scale(1.08)}}

.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;position:relative;z-index:2}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--accent-2);
  border:1px solid rgba(255,140,66,.4);padding:6px 16px;border-radius:999px;margin-bottom:22px;
  animation:fadeUp .8s var(--ease) both}
.hero-text h1{font-size:52px;line-height:1.18;font-weight:800;letter-spacing:1px;
  animation:fadeUp .8s .1s var(--ease) both}
.hero-text h1 .hl{color:var(--accent-2)}
.lead{margin-top:22px;font-size:17px;color:rgba(255,255,255,.82);max-width:520px;
  animation:fadeUp .8s .2s var(--ease) both}
.hero-actions{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap;
  animation:fadeUp .8s .3s var(--ease) both}
.btn{padding:14px 30px;border-radius:999px;font-weight:600;font-size:15px;transition:.3s var(--ease);cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--accent-2),var(--accent));color:#fff;box-shadow:0 12px 30px rgba(255,106,19,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(255,106,19,.45)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff}
.hero-tags{margin-top:30px;display:flex;gap:10px;flex-wrap:wrap;list-style:none;
  animation:fadeUp .8s .4s var(--ease) both}
.hero-tags li{font-size:13px;color:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.18);
  padding:6px 14px;border-radius:999px}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* 弹簧视觉 */
.hero-visual{display:flex;justify-content:center;align-items:center}
.coil-stage{position:relative;width:300px;height:420px;display:flex;align-items:center;justify-content:center;
  animation:fadeUp 1s .3s var(--ease) both}
.coil{width:230px;height:auto;filter:drop-shadow(0 20px 30px rgba(0,0,0,.35));
  animation:bob 3.6s ease-in-out infinite}
.coil-body{transform-origin:center;animation:breathe 3.6s ease-in-out infinite}
.coil-path{stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes breathe{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.9)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.coil-shadow{position:absolute;bottom:6px;left:50%;width:180px;height:22px;
  background:radial-gradient(ellipse,rgba(0,0,0,.4),transparent 70%);transform:translateX(-50%);
  animation:shadowPulse 3.6s ease-in-out infinite}
@keyframes shadowPulse{0%,100%{transform:translateX(-50%) scale(1);opacity:.4}50%{transform:translateX(-50%) scale(.8);opacity:.25}}

.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  width:26px;height:42px;border:2px solid rgba(255,255,255,.5);border-radius:14px;z-index:3}
.scroll-hint span{position:absolute;top:8px;left:50%;width:4px;height:8px;margin-left:-2px;
  background:#fff;border-radius:2px;animation:scrollDot 1.8s infinite}
@keyframes scrollDot{0%{opacity:0;transform:translateY(0)}40%{opacity:1}100%{opacity:0;transform:translateY(14px)}}

/* ===== 内页页头 ===== */
.page-header{position:relative;padding:calc(var(--nav-h) + 64px) 0 64px;
  background:radial-gradient(120% 120% at 20% 0%,#1b3a63 0%,#10213d 55%,#0a1730 100%);
  color:#fff;text-align:center;overflow:hidden}
.page-header .orb{position:absolute;border-radius:50%;filter:blur(8px);opacity:.32;
  background:radial-gradient(circle at 30% 30%,var(--accent-2),var(--accent));animation:float 14s ease-in-out infinite}
.page-header .orb-1{width:260px;height:260px;top:-50px;right:6%;opacity:.28}
.page-header .orb-2{width:160px;height:160px;bottom:10%;left:8%;animation-delay:-5s;opacity:.22}
.page-header h1{font-size:42px;font-weight:800;letter-spacing:1px;position:relative;z-index:2}
.page-header .breadcrumbs{position:relative;z-index:2;margin-top:14px;font-size:14px;color:rgba(255,255,255,.65)}
.page-header .breadcrumbs a{color:rgba(255,255,255,.85)}
.page-header .breadcrumbs a:hover{color:var(--accent-2)}

/* ===== 公司简介 ===== */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.about-copy p{color:#3a4756;margin-bottom:16px;font-size:16px}
.about-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.about-badges span{background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:600;
  padding:7px 16px;border-radius:999px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;
  box-shadow:var(--shadow-sm);transition:.35s var(--ease);text-align:center}
.stat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(255,106,19,.4)}
.stat-num{font-size:42px;font-weight:800;color:var(--navy);line-height:1;display:flex;justify-content:center;align-items:baseline}
.stat-num .count{color:var(--accent)}
.stat-num i{font-style:normal;font-size:22px;color:var(--accent);margin-left:2px}
.stat-label{margin-top:10px;color:var(--muted);font-size:14px}

/* ===== 核心优势 ===== */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cards-5{grid-template-columns:repeat(5,1fr)}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 26px;
  box-shadow:var(--shadow-sm);transition:.35s var(--ease);position:relative;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;height:4px;width:0;background:linear-gradient(90deg,var(--accent-2),var(--accent));
  transition:width .4s var(--ease)}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.card:hover::before{width:100%}
.card-ic{width:56px;height:56px;border-radius:14px;background:var(--accent-soft);display:flex;
  align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}
.card h3{font-size:19px;color:var(--navy);margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}

/* ===== 产品图库 ===== */
.product-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pg-item{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.35s var(--ease)}
.pg-item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pg-img{aspect-ratio:4/3;overflow:hidden;background:#f7faff;cursor:pointer}
.pg-img img{width:100%;height:100%;object-fit:contain;transition:transform .5s var(--ease);padding:6px}
.pg-item:hover .pg-img img{transform:scale(1.04)}
.pg-item figcaption{padding:12px 14px;text-align:center;font-size:14px;font-weight:600;color:var(--navy)}

/* ===== 标准/流程大图区块 ===== */
.media-block{margin:0 auto;max-width:920px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);text-align:center}
.media-block img{width:100%;max-width:880px;height:auto;object-fit:contain;border-radius:12px;cursor:pointer;transition:transform .4s var(--ease)}
.media-block img:hover{transform:scale(1.01)}
.media-block figcaption{margin-top:14px;font-size:15px;font-weight:600;color:var(--navy)}

/* 设备工艺页三图画廊 */
.factory-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.factory-gallery .media-block{margin:0;height:100%;display:flex;flex-direction:column;justify-content:space-between}
.factory-gallery .media-block img{flex:1;min-height:0;width:100%;height:auto;max-height:360px;object-fit:contain;border-radius:10px}
.factory-gallery .media-block figcaption{margin-top:12px;font-size:14px}
@media (max-width:980px){.factory-gallery{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){.factory-gallery{grid-template-columns:1fr}}

/* ===== 图片灯箱（支持滚轮/双指缩放与拖拽） ===== */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(16,33,61,.9);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s var(--ease);padding:0;overflow:hidden;touch-action:none}
.lightbox.open{opacity:1;pointer-events:auto}
.lightbox-stage{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:grab}
.lightbox-stage:active{cursor:grabbing}
.lightbox img{max-width:95vw;max-height:90vh;object-fit:contain;border-radius:8px;box-shadow:0 24px 70px rgba(0,0,0,.35);transform:translate(0,0) scale(1);transition:transform .05s linear;will-change:transform;user-select:none;-webkit-user-drag:none;touch-action:none}
.lightbox img.no-trans{transition:none}
.lightbox-close{position:absolute;top:14px;right:18px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.15);color:#fff;border:0;font-size:28px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;z-index:10}
.lightbox-close:hover{background:rgba(255,255,255,.3)}
.lightbox-reset{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);background:rgba(255,255,255,.15);color:#fff;border:0;border-radius:999px;padding:8px 18px;font-size:13px;cursor:pointer;transition:background .2s;z-index:10}
.lightbox-reset:hover{background:rgba(255,255,255,.3)}

/* ===== 关于我们 ===== */
.aboutus-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:48px;align-items:center}
.aboutus-story p{color:#3a4756;font-size:16px;margin-bottom:18px}
.aboutus-story strong{color:var(--accent)}
.values{list-style:none;margin-top:8px;display:grid;gap:14px}
.values li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:#3a4756}
.values li span{flex:none;min-width:96px;text-align:center;background:var(--navy);color:#fff;
  font-weight:600;font-size:14px;padding:8px 10px;border-radius:10px}
.aboutus-card{background:linear-gradient(160deg,var(--navy-2),var(--navy));color:#fff;
  border-radius:var(--radius);padding:36px 30px;box-shadow:var(--shadow);text-align:center}
.loc-pin{font-size:34px;margin-bottom:10px}
.aboutus-card h3{font-size:19px;margin-bottom:10px;line-height:1.5}
.aboutus-card .loc{color:rgba(255,255,255,.78);font-size:14px}
.loc-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.loc-tags span{border:1px solid rgba(255,255,255,.25);font-size:12px;padding:5px 12px;border-radius:999px;color:rgba(255,255,255,.85)}

/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:40px;align-items:stretch}
.contact-info{display:grid;gap:14px}
.ci{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-sm);transition:.3s var(--ease)}
.ci:hover{border-color:rgba(255,106,19,.4);transform:translateX(4px)}
.ci-ic{flex:none;width:42px;height:42px;border-radius:12px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;font-size:20px}
.ci b{display:block;font-size:14px;color:var(--navy);margin-bottom:2px}
.ci p{color:var(--muted);font-size:14.5px}
.contact-wechat{background:linear-gradient(160deg,#fff,#f7faff);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);text-align:center;
  display:flex;flex-direction:column;align-items:center;justify-content:center}
.wx-ic{width:64px;height:64px;border-radius:18px;background:#fff;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.wx-ic img{width:40px;height:40px}
.wx-tip{color:var(--muted);font-size:14px;margin-bottom:16px}
.wx-qr{width:170px;height:170px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff}
.wx-qr img{width:100%;height:100%;object-fit:cover}

/* ===== 页脚 ===== */
.footer{background:var(--navy);color:rgba(255,255,255,.8);padding:34px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:12px;font-weight:600;color:#fff}
.footer-brand img{height:30px;width:auto}
.footer-meta{text-align:right;font-size:13px;line-height:1.8}
.footer-meta .beian a{color:rgba(255,255,255,.6);text-decoration:underline}
.footer-meta .beian a:hover{color:#fff}

/* ===== Toast ===== */
.toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);
  background:var(--navy);color:#fff;padding:13px 24px;border-radius:999px;font-size:14px;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.35s var(--ease);z-index:100}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:10px;text-align:center}
  .hero-text{order:2}
  .hero-visual{order:1;margin-top:10px}
  .hero-text h1{font-size:42px}
  .lead{margin-left:auto;margin-right:auto}
  .hero-actions,.hero-tags{justify-content:center}
  .about-grid,.aboutus-grid,.contact-grid{grid-template-columns:1fr;gap:32px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .cards-5{grid-template-columns:repeat(3,1fr)}
  .cards-3{grid-template-columns:repeat(2,1fr)}
  .product-gallery{grid-template-columns:repeat(2,1fr);gap:18px}
  .sec-head h2{font-size:28px}
}

@media (max-width:760px){
  .page-header h1{font-size:30px}
  .menu{position:fixed;top:var(--nav-h);left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;margin:0;padding:10px 18px 22px;box-shadow:0 16px 30px rgba(16,33,61,.16);
    transform:translateY(-120%);opacity:0;transition:.35s var(--ease);pointer-events:none}
  .nav.scrolled .menu{top:62px}
  .menu.open{transform:none;opacity:1;pointer-events:auto}
  .menu a{color:var(--ink)!important;padding:14px 12px;border-bottom:1px solid var(--line)}
  .menu a::after{display:none}
  .hamburger{display:flex}
  .section{padding:64px 0}
  .hero-text h1{font-size:32px}
  .cards,.cards-5,.cards-3{grid-template-columns:1fr}
  .product-gallery{grid-template-columns:repeat(2,1fr);gap:14px}
  .pg-item figcaption{padding:10px 12px;font-size:13px}
  .about-stats{grid-template-columns:1fr 1fr}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-meta{text-align:center}
  .wrap{padding:0 18px}
  .nav-inner{padding:0 18px}
  .coil-stage{width:240px;height:340px}
  .coil{width:190px}
  .scroll-hint{display:none}
}

@media (max-width:420px){
  .hero-text h1{font-size:27px}
  .stat-num{font-size:34px}
  .brand-text strong{font-size:16px}
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .coil-path{stroke-dashoffset:0}
}

/* ===== 动态页面公共样式（登录/注册/会员/计算页） ===== */
.section-pad{padding:calc(var(--nav-h) + 48px) 0 80px;min-height:60vh}
.form-box{max-width:440px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow-sm)}
.form-box h1,.form-box h2{margin:0 0 4px;font-size:22px;color:var(--navy)}
.form-box .sub{color:var(--muted);font-size:14px;margin:0 0 22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;transition:border .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.err{background:#fff0f0;color:#c33;padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;border-left:3px solid #c33}
.ok{background:#f0fff4;color:#2a6;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:16px;border-left:3px solid #2a6}

/* 导航扩展 */
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;padding-left:14px}
.user-chip{font-size:13px;color:var(--navy);background:var(--accent-soft);padding:6px 12px;border-radius:999px;font-weight:600}
.login-btn{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff;padding:7px 16px;border-radius:999px;font-size:13px;cursor:pointer;transition:.25s}
.nav.scrolled .login-btn{color:var(--ink);border-color:var(--line)}
.login-btn:hover{background:rgba(255,255,255,.12)}
.nav.scrolled .login-btn:hover{background:var(--accent-soft)}
.nav-calc{background:var(--accent);border:1.5px solid var(--accent);color:#fff;padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;transition:.25s;box-shadow:0 6px 18px rgba(255,106,19,.35)}
.nav-calc:hover{background:var(--accent-2);border-color:var(--accent-2);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,19,.45)}
.menu .nav-calc{padding:9px 16px!important}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(16,33,61,.55);z-index:100;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s}
.modal.open{opacity:1;pointer-events:auto}
.modal-box{background:#fff;border-radius:var(--radius);padding:30px;width:min(420px,92vw);position:relative;box-shadow:var(--shadow)}
.modal-close{position:absolute;top:12px;right:16px;background:none;border:0;font-size:28px;color:var(--muted);cursor:pointer;line-height:1}
.modal-close:hover{color:var(--navy)}
.modal-box h3{margin:0 0 4px;font-size:20px;color:var(--navy)}
.modal-sub{color:var(--muted);font-size:13px;margin-bottom:20px}
.modal-tip{text-align:center;font-size:13px;color:var(--muted);margin-top:16px}
.modal-tip a{color:var(--accent);font-weight:600}

/* 浮动客服 */
.cs-float{position:fixed;right:22px;bottom:22px;z-index:90}
.cs-toggle{width:54px;height:54px;border-radius:50%;border:0;box-shadow:var(--shadow);background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:24px}
.cs-toggle img{width:32px;height:32px;object-fit:contain}
.cs-panel{position:absolute;right:0;bottom:64px;width:150px;background:#fff;border-radius:var(--radius);padding:10px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(10px);transition:.25s;text-align:center}
.cs-float:hover .cs-panel,.cs-float.open .cs-panel{opacity:1;pointer-events:auto;transform:none}
.cs-head{display:flex;align-items:center;justify-content:center;gap:6px;margin-bottom:12px}
.cs-head img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.cs-head strong{color:var(--navy);font-size:15px}
.cs-panel p{font-size:13px;color:var(--muted);margin:6px 0}
.cs-panel a{color:var(--accent);font-weight:600}
.cs-qr{margin-top:10px;text-align:center}
.cs-qr img{width:120px;height:auto;border-radius:8px;display:block;margin:0 auto}

/* 表格 / 卡片 */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table th,.table td{padding:12px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.table th{background:var(--bg-soft);color:var(--navy);font-weight:700}
.table tr:last-child td{border-bottom:0}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-green{background:#e6f8ed;color:#1a7c3e}
.badge-orange{background:#fff2e6;color:#b35c00}
.badge-gray{background:#f0f2f5;color:#555}

/* ===== 计算页 / 会员页兼容样式（来自 v1） ===== */
.btn-outline{background:#fff;color:var(--navy);border:1px solid var(--line)}
.btn-outline:hover{color:var(--accent);border-color:var(--accent)}
.page-banner{background:linear-gradient(135deg,#16243f,#1f3358);color:#fff;padding:calc(var(--nav-h) + 24px) 0 28px}
.page-banner h1{font-size:28px;font-weight:800}
.page-banner p{color:rgba(255,255,255,.8);margin-top:8px}
.prose{max-width:860px;margin:0 auto;color:var(--ink);font-size:16px;line-height:1.9}
.prose h2{color:var(--navy);margin:28px 0 12px;font-size:22px}
.prose p{margin-bottom:14px}
.calc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px;max-width:1000px;margin:0 auto}
.calc-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow-sm);transition:.25s}
.calc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.calc-card h3{color:var(--navy);font-size:19px;margin-bottom:8px}
.calc-card p{color:var(--muted);font-size:14px;margin-bottom:14px}
.calc-card .go{color:var(--accent);font-weight:600;font-size:14px}
.calc-wrap{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow-sm)}
.calc-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:14px}
.calc-row .field input{width:100%}
.calc-result{margin-top:18px;padding:18px;border-radius:12px;background:#f3f7ff;border:1px solid #dbe6ff;font-size:15px}
.calc-result b{color:var(--navy)}
.calc-note{color:var(--muted);font-size:13px;margin-top:10px}
.calc-shell{display:flex;gap:0;max-width:1100px;margin:calc(var(--nav-h) + 28px) auto 40px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-sm);overflow:hidden;min-height:520px}
.spring-nav{width:160px;flex-shrink:0;border-right:1px solid var(--line);padding:18px 10px;background:#fafbfd;overflow-y:auto}
.nav-item{display:block;padding:8px 10px;margin-bottom:2px;font-size:13px;color:var(--ink);text-decoration:none;border-radius:8px;transition:.12s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-item:hover{background:#eef1f6;color:var(--navy)}
.nav-item.active{background:var(--accent);color:#fff;font-weight:600}
.spring-main{flex:1;display:flex;flex-direction:column;min-width:0}
.spring-head{padding:20px 26px 14px;border-bottom:1px solid var(--line)}
.spring-head h2{color:var(--navy);font-size:20px;margin:0 0 4px}
.spring-desc{color:var(--muted);font-size:13px;margin:0}
.spring-body{display:flex;flex:1;min-height:0}
.spring-form{width:32%;padding:22px 26px;border-right:1px solid var(--line)}
.spring-form .field{margin-bottom:13px}
.spring-form .field label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px;font-weight:600}
.spring-form .field input,.spring-form .field select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;outline:none;background:#fff;box-sizing:border-box}
.spring-form .field input:focus,.spring-form .field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.spring-form .unit{font-size:11px;color:#aab2bf;margin-left:3px}
.spring-form .required{color:#e53935;margin-left:3px;font-weight:700}
.spring-form input.input-error{border-color:#e53935;box-shadow:0 0 0 3px rgba(229,57,53,.15)}
.spring-form .input-display{background:var(--bg-soft);color:var(--navy);font-weight:600;border-color:var(--line);cursor:default}
.input-gf-wrap{display:flex;align-items:center;gap:8px}
.input-gf-wrap input{flex:1;min-width:0}
.input-gf-wrap .gf-val{flex:none;min-width:64px;text-align:right;font-size:13px;font-weight:600;color:var(--navy);white-space:nowrap}
.spring-form .input-group{border:1px solid var(--line);border-radius:10px;padding:14px 16px 6px;margin-bottom:16px;background:#fff}
.spring-form .input-group legend{font-size:12px;font-weight:700;color:var(--navy);padding:0 8px;text-transform:uppercase;letter-spacing:.5px}
.spring-form .input-group-condition{background:#f0f7ff;border-color:#cfe2ff}
.spring-form .input-group-performance{background:#fff7f0;border-color:#ffe0c2}
.spring-actions{display:flex;gap:12px;margin-top:18px}
.spring-result{width:68%;padding:22px 26px;background:#f6f8fc;overflow-y:auto}
.result-hint{color:var(--muted);font-size:14px;text-align:center;padding:30px 0}
.res-row{display:flex;justify-content:space-between;align-items:center;padding:9px 12px;border-bottom:1px solid var(--line);font-size:14px}
.res-row:last-child{border-bottom:none}
.res-label{color:var(--muted)}
.res-label .unit{font-size:11px;color:#aab2bf;margin-left:3px}
.res-val{font-weight:600;color:var(--navy);text-align:right}
.res-note{font-size:11px;color:var(--accent);font-weight:500;margin-left:6px}
@media(max-width:760px){
  .calc-row{grid-template-columns:1fr}
  .calc-shell{flex-direction:column;min-height:0}
  .spring-nav{width:100%;border-right:none;border-bottom:1px solid var(--line);display:flex;gap:6px;overflow-x:auto;padding:10px}
  .nav-item{white-space:nowrap;margin:0}
  .spring-body{flex-direction:column}
  .spring-form{width:100%;border-right:none;border-bottom:1px solid var(--line)}
  .spring-result{width:100%}
}

/* ===== 计算说明弹窗 ===== */
.calc-note-mask{position:fixed;inset:0;background:rgba(16,28,46,.55);display:flex;align-items:center;justify-content:center;z-index:9999;padding:20px}
.calc-note-modal{background:#fff;border-radius:14px;width:min(560px,100%);max-height:82vh;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3);overflow:hidden}
.calc-note-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);background:#f7f9fc}
.calc-note-head h3{margin:0;font-size:16px;color:var(--navy)}
.calc-note-close{border:none;background:transparent;font-size:26px;line-height:1;color:#9aa3af;cursor:pointer;padding:0 4px}
.calc-note-close:hover{color:var(--navy)}
.calc-note-body{padding:18px 22px;overflow-y:auto;font-size:14px;line-height:1.75;color:var(--ink)}
.calc-note-list{margin:0;padding-left:20px}
.calc-note-list li{margin-bottom:9px}
.calc-note-list code{background:#eef2f7;padding:1px 6px;border-radius:5px;font-size:12.5px;color:var(--navy)}
.calc-note-gf{margin-top:14px;padding:12px 14px;background:#fff7f0;border:1px solid #ffe0c2;border-radius:10px}
.calc-note-gf-title{font-weight:700;color:#b9770e;margin-bottom:6px;font-size:13px}
.calc-note-gf ul{margin:0 0 8px;padding-left:18px}
.calc-note-gf li{margin-bottom:4px;font-size:13px}
.calc-note-tip{margin:0;font-size:12.5px;color:var(--muted)}

/* ===== 弹簧计算报告书 ===== */
.rpt-head{margin-bottom:14px;border-bottom:2px solid var(--navy);padding-bottom:10px;text-align:center}
.rpt-company{font-size:22px;font-weight:700;color:var(--navy)}
.rpt-title{font-size:16px;font-weight:600;color:var(--ink);margin-top:2px}
.rpt-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:8px;font-size:13px;color:var(--muted)}
.rpt-cols{display:flex;gap:14px;flex-wrap:wrap}
.rpt-col{flex:1 1 26%;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.rpt-col.rpt-condition{background:#f0f7ff;border-color:#cfe2ff}
.rpt-col.rpt-condition .rpt-col-title{background:#2f6bd0}
.rpt-col.rpt-performance{background:#fff7f0;border-color:#ffe0c2}
.rpt-col.rpt-performance .rpt-col-title{background:#b9770e}
.rpt-col.rpt-result{background:#f6fff6;border-color:#c8e6c9}
.rpt-col.rpt-result .rpt-col-title{background:#2e7d32}
.rpt-col-title{background:var(--navy);color:#fff;font-size:13px;font-weight:600;padding:8px 12px}
.rpt-table{width:100%;border-collapse:collapse;font-size:13px}
.rpt-table td,.rpt-table th{padding:6px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.rpt-table th{background:#f3f5f8;color:var(--navy);font-weight:600}
.rpt-label{color:var(--muted);width:60%}
.rpt-val{color:var(--navy);font-weight:600;text-align:right}
.rpt-val i{font-style:normal;font-size:11px;color:#aab2bf;margin-left:2px}
.rpt-note{display:block;font-size:11px;color:var(--accent);font-weight:500;margin-top:2px}
.rpt-judge{display:inline-block;margin-left:6px;padding:1px 7px;border-radius:10px;font-size:11px;font-weight:600}
.rpt-judge.ok{background:#e6f6ec;color:#1a8a4a}
.rpt-judge.warn{background:#fff3e0;color:#b9770e}
.rpt-judge.bad{background:#fdeaea;color:#c0392b}
.rpt-judge.info{background:#eef3fb;color:#2f6bd0}
.rpt-remarks{margin-top:14px;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.rpt-remarks-body{padding:12px;font-size:13px;line-height:1.6}
.rpt-remarks-body p{margin:0 0 8px}
.rpt-remarks-imgs{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start}
.rpt-remarks-imgs img{max-width:calc(50% - 6px);max-height:220px;border-radius:6px;display:block;flex:1 1 auto;height:auto;object-fit:contain;cursor:zoom-in}
.rpt-note-block{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6}
.rpt-actions{margin-top:16px;text-align:center}

/* 历史记录 */
.history-field{margin-bottom:14px}
.history-row{display:flex;gap:8px;align-items:stretch}
.history-row select{flex:1;min-width:0}
.history-row .btn-sm{flex-shrink:0;padding:8px 12px}

/* 备注输入区 */
.remarks-box{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.remarks-box label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:600}
.remarks-box textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:13px;resize:vertical;box-sizing:border-box;min-height:64px}
.remarks-img-area{min-height:64px;padding:9px 11px;border:1px dashed var(--line);border-radius:9px;background:#fff;box-sizing:border-box;display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start;position:relative}
.remarks-img-area:empty:before{content:attr(placeholder);color:#aab2bf;font-size:12px}
.remarks-img-area img{max-width:calc(50% - 5px);max-height:160px;border-radius:6px;display:block;flex:1 1 auto;height:auto;object-fit:contain;cursor:default;user-select:none;-webkit-user-drag:none}
.remarks-img-area img.resizing{outline:2px dashed var(--accent);outline-offset:2px;flex:0 0 auto;max-width:none}
.img-resize-overlay{position:absolute;z-index:50;border:1px dashed var(--accent);pointer-events:none;box-sizing:border-box}
.img-resize-overlay .resize-handle{position:absolute;width:12px;height:12px;background:var(--accent);border:2px solid #fff;border-radius:2px;box-shadow:0 1px 3px rgba(0,0,0,.25);pointer-events:auto}
.img-resize-overlay .resize-handle-nw{top:-6px;left:-6px;cursor:nwse-resize}
.img-resize-overlay .resize-handle-ne{top:-6px;right:-6px;cursor:nesw-resize}
.img-resize-overlay .resize-handle-sw{bottom:-6px;left:-6px;cursor:nesw-resize}
.img-resize-overlay .resize-handle-se{bottom:-6px;right:-6px;cursor:nwse-resize}
.remarks-img-actions{display:flex;align-items:center;gap:10px;margin-top:8px}
.remarks-tip{font-size:12px;color:#aab2bf}
.btn-sm{padding:6px 12px;font-size:12px}

@media print{
  /* 只保留临时移到 body 下的报告节点，其余全部不显示，避免空白页 */
  body > *:not(#reportPrint){display:none!important}
  #reportPrint{position:static!important;display:block!important;width:100%!important;margin:0!important;padding:0!important}
  #reportPrint *{visibility:visible!important}
  .rpt-head{page-break-after:avoid;break-after:avoid}
  .rpt-cols{display:flex;flex-wrap:nowrap}
  .rpt-col{flex:1 1 33%;page-break-inside:auto}
  .rpt-table tr{page-break-inside:avoid;break-inside:avoid}
  .rpt-remarks-imgs{page-break-inside:avoid;break-inside:avoid}
  .rpt-remarks-imgs img{display:block!important;visibility:visible!important;max-width:calc(50% - 6px)!important;page-break-inside:avoid;break-inside:avoid}
}