/* 元影插件官网 · 样式表（自包含，无外部字体/脚本/CDN，适配站点 CSP） */
:root{
  --navy:#0b2545; --navy2:#123a68; --blue:#1667b8; --blue2:#3b8fe0;
  --ink:#17263a; --body:#4a5a70; --muted:#74839a; --line:#e2e9f2;
  --bg:#f5f8fc; --white:#fff; --accent:#ef8a3c; --green:#178f70;
  --shadow:0 10px 30px rgba(16,42,78,.08);
  --shadow-lg:0 26px 64px rgba(11,37,69,.16);
  --radius:16px; --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{margin:0;background:var(--bg);color:var(--body);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;margin:0 0 .6em;font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(2.2rem,4.4vw,3.5rem)}
h2{font-size:clamp(1.6rem,2.8vw,2.2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue2)}
img{max-width:100%;display:block}
ul,ol{padding-left:1.3em;margin:0 0 1em}
li{margin:.35em 0}
:focus-visible{outline:3px solid var(--blue2);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:12px 18px;z-index:200}
.skip:focus{left:12px;top:12px;color:#fff}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.header-inner{max-width:var(--max);margin:0 auto;padding:0 24px;height:70px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--navy)}
.brand:hover{color:var(--navy)}
.brand-mark{width:38px;height:38px;border-radius:11px;overflow:hidden;flex-shrink:0;
  box-shadow:0 6px 16px rgba(22,103,184,.28)}
.brand-mark img{width:100%;height:100%;display:block;object-fit:cover}
.brand-text{font-size:1.16rem;font-weight:800;letter-spacing:.04em;color:var(--navy);line-height:1.15}
.brand-text small{display:block;font-size:.66rem;font-weight:600;letter-spacing:.18em;color:var(--muted);line-height:1.4}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{padding:9px 13px;border-radius:9px;color:#3b4b61;font-size:.93rem;font-weight:600;white-space:nowrap}
.nav a:hover{background:#eef4fc;color:var(--blue)}
.nav a.active{color:var(--blue);background:#eaf2fd}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;
  border-radius:11px;padding:12px 22px;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;line-height:1.4}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(22,103,184,.24)}
.btn-primary:hover{background:#0f56a0;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.36);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--navy2)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:.88rem}
.header-cta{margin-left:6px}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;
  border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--navy);border-radius:2px}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 500px at 82% 8%,rgba(59,143,224,.28),transparent 60%),
  linear-gradient(135deg,#0a2140 0%,#123a68 55%,#0d2b50 100%);color:#c8d8ee}
.hero::before{content:"";position:absolute;inset:0;opacity:.12;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:46px 46px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%)}
.hero-inner{position:relative;max-width:var(--max);margin:0 auto;padding:76px 24px 82px;display:grid;
  grid-template-columns:1.02fr 1.08fr;gap:56px;align-items:center}
.hero h1{color:#fff;margin:.15em 0 .35em;letter-spacing:.02em}
.hero h1 span{color:#8fc4ff;display:block;font-size:.62em;letter-spacing:.02em;white-space:nowrap}
.hero .lead{font-size:1.16rem;line-height:1.85;color:#d9e6f6;max-width:34em}
.hero .desc{color:#a9c1de;font-size:.98rem;max-width:36em}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.8rem;font-weight:700;letter-spacing:.14em;
  color:#9fc9ff;text-transform:uppercase;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  padding:7px 14px;border-radius:999px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:#5fe0b0;box-shadow:0 0 0 4px rgba(95,224,176,.16)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.86rem;color:#a9c1de}
.hero-meta b{color:#fff;font-weight:700}
.hero-shot{position:relative;border-radius:14px;overflow:hidden;box-shadow:0 34px 80px rgba(0,0,0,.42);
  border:1px solid rgba(255,255,255,.2);background:#0d1e33}
.hero-shot img{width:100%;height:auto}
.shot-caption{position:absolute;left:0;right:0;bottom:0;padding:10px 16px;font-size:.78rem;color:#c9dcf2;
  background:linear-gradient(transparent,rgba(4,16,32,.88));text-align:center}
.hero-trust{position:relative;border-top:1px solid rgba(255,255,255,.12)}
.trust-grid{max-width:var(--max);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:22px 10px;text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.trust-item:last-child{border-right:0}
.trust-item strong{display:block;color:#fff;font-size:1.16rem;font-weight:800}
.trust-item span{font-size:.8rem;color:#9fb9d8;letter-spacing:.06em}

/* ---------- 通用区块 ---------- */
.section{padding:84px 0}
.section.alt{background:#fff}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.section-head .kicker{display:block;font-size:.8rem;font-weight:800;letter-spacing:.18em;color:var(--blue);
  text-transform:uppercase;margin-bottom:12px}
.section-head p{color:var(--body);font-size:1.02rem;margin:0}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow);transition:transform .22s,box-shadow .22s,border-color .22s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c9dcf3}
.card h3{margin:.2em 0 .55em}
.card p{font-size:.94rem;margin-bottom:.7em}
.card .mini{font-size:.86rem;color:var(--muted);margin:0}
.icon-box{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,#eaf3ff,#dbeafe);border:1px solid #d5e6fb}
.icon-box svg{width:27px;height:27px;stroke:var(--blue);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.04em;color:var(--blue);
  background:#eaf3ff;border:1px solid #d5e6fb;border-radius:999px;padding:3px 11px;margin:0 6px 8px 0}
.tag.green{color:var(--green);background:#e8f7f1;border-color:#c9eddf}
.tag.orange{color:#b9631d;background:#fff2e7;border-color:#fbd9ba}
.list-check{list-style:none;padding:0;margin:.9em 0 0}
.list-check li{position:relative;padding-left:26px;font-size:.9rem;color:var(--body);margin:.5em 0}
.list-check li::before{content:"";position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 4px #e6f0fc}
.note{font-size:.84rem;color:var(--muted);margin-top:14px}

/* 应用介绍 */
.about-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.about-copy p{font-size:1rem}
.info-panel{background:linear-gradient(160deg,#f0f6fe,#e7f0fb);border:1px solid #d8e7f8;border-radius:var(--radius);padding:30px}
.info-panel h3{margin-top:0}
.info-row{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed #cfdeee;font-size:.92rem}
.info-row:last-child{border-bottom:0}
.info-row .n{flex:0 0 30px;height:30px;border-radius:9px;background:var(--blue);color:#fff;font-size:.82rem;
  font-weight:800;display:grid;place-items:center}
.info-row strong{color:var(--ink)}

/* 图片展示 */
.figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.figure.wide{grid-column:1/-1}
.figure .pic{background:linear-gradient(150deg,#eef4fb,#e3edf9);padding:18px;display:grid;place-items:center;min-height:210px}
.figure .pic img{width:100%;border-radius:8px;border:1px solid #d9e5f3;background:#fff}
.figure .cap{padding:18px 22px 22px}
.figure .cap h3{margin:0 0 6px;font-size:1.02rem}
.figure .cap p{font-size:.88rem;margin:0;color:var(--muted)}
.icon-strip{display:flex;align-items:center;justify-content:center;gap:34px;flex-wrap:wrap;padding:30px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:24px}
.icon-strip .ico{text-align:center}
.icon-strip img{width:74px;height:74px;margin:0 auto 8px;border-radius:16px;box-shadow:0 6px 18px rgba(16,42,78,.14)}
.icon-strip span{font-size:.82rem;color:var(--muted)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 18px;position:relative;box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:1.5rem;
  font-weight:800;color:#c9dcf3;margin-bottom:10px;line-height:1}
.step h3{font-size:1rem;margin:0 0 8px}
.step p{font-size:.85rem;margin:0;color:var(--body)}
.step:not(:last-child)::after{content:"→";position:absolute;right:-15px;top:44%;color:var(--blue);
  font-size:1.2rem;font-weight:800;z-index:2}

/* 表格 */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:560px}
th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line)}
th{background:#f0f6fd;color:var(--navy);font-weight:700;width:28%}
tr:last-child td,tr:last-child th{border-bottom:0}
td{color:var(--body)}
td strong{color:var(--ink)}

/* FAQ */
.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--ink);list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.35rem;color:var(--blue);font-weight:400;line-height:1}
.faq[open] summary::after{content:"−"}
.faq[open] summary{border-bottom:1px solid var(--line);color:var(--blue)}
.faq .answer{padding:16px 22px 20px;font-size:.93rem}
.faq .answer p:last-child{margin-bottom:0}

/* 联系 / CTA */
.cta-band{background:linear-gradient(135deg,#0f3159,#1667b8);color:#dbe9fa;border-radius:20px;padding:46px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;box-shadow:var(--shadow-lg)}
.cta-band h2{color:#fff;margin:0 0 10px;font-size:1.7rem}
.cta-band p{margin:0;color:#c6dcf3;font-size:.96rem}
.cta-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}
.contact-card .lbl{font-size:.78rem;font-weight:800;letter-spacing:.12em;color:var(--blue);text-transform:uppercase;margin-bottom:8px}
.contact-card strong{display:block;color:var(--ink);font-size:1rem;margin-bottom:4px;word-break:break-word}
.contact-card span{font-size:.88rem;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:#0a1f38;color:#9fb3cc;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.site-footer h4{color:#fff;font-size:.95rem;margin:0 0 16px}
.site-footer p{font-size:.88rem;line-height:1.9;margin:0 0 10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.55em 0;font-size:.88rem}
.site-footer a{color:#a9c0dc}
.site-footer a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:#7e98b8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:38px;padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem;color:#8ba3c0}
.footer-bottom a{color:#a9c0dc}
.beian-link{display:inline-flex;align-items:center;gap:6px;color:#a9c0dc}

/* ---------- 内页 ---------- */
.page-hero{background:linear-gradient(135deg,#0d2b50,#174a83);color:#cee0f4;padding:52px 0 46px}
.page-hero h1{color:#fff;font-size:clamp(1.8rem,3.2vw,2.5rem);margin:0 0 10px}
.page-hero p{color:#b7cee8;margin:0;max-width:56em;font-size:.98rem}
.crumb{font-size:.84rem;color:#8fb2da;margin-bottom:14px}
.crumb a{color:#b9d4f2}
.legal{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:40px 46px;margin:44px 0 70px;font-size:.96rem}
.legal h2{font-size:1.35rem;margin:2.2em 0 .7em;padding-bottom:.4em;border-bottom:1px solid var(--line)}
.legal h2:first-of-type{margin-top:0}
.legal h3{font-size:1.06rem;margin:1.6em 0 .5em}
.legal p,.legal li{color:var(--body)}
.legal .meta{background:#f2f7fd;border:1px solid #dceaf9;border-radius:12px;padding:18px 22px;
  font-size:.9rem;color:var(--navy2);margin-bottom:26px}
.legal .meta b{color:var(--ink)}
.legal ol{line-height:2}
.legal .sign{margin-top:36px;padding-top:22px;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.audit-box{background:#eef6ff;border-left:4px solid var(--blue);border-radius:0 12px 12px 0;padding:18px 22px;margin:22px 0;font-size:.92rem}
.audit-box strong{color:var(--navy)}

/* 回到顶部 */
#toTop{position:fixed;right:24px;bottom:26px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--blue);box-shadow:var(--shadow);cursor:pointer;display:none;place-items:center;font-size:1.2rem;z-index:90}
#toTop.show{display:grid}
#toTop:hover{background:var(--blue);color:#fff}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .hero-inner{grid-template-columns:1fr;gap:38px;padding-top:56px;padding-bottom:60px}
  .hero-shot{max-width:760px;margin:0 auto}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step:not(:last-child)::after{display:none}
  .cta-band{grid-template-columns:1fr;padding:34px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    padding:12px 18px 18px;flex-direction:column;align-items:stretch;gap:2px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:11px 14px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .section{padding:60px 0}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-item:nth-child(2){border-right:0}
  .trust-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
  .grid-2,.grid-3,.grid-4,.steps,.contact-grid{grid-template-columns:1fr}
  .legal{padding:26px 22px;margin:28px 0 50px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .hero h1 span{white-space:normal}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .icon-strip{gap:18px}
}
@media print{
  .site-header,.hero-trust,#toTop,.cta-band{display:none}
  body{background:#fff;color:#000}
  .legal{box-shadow:none;border:0;padding:0}
}