/* YITORCH — static stylesheet (replaces the Tailwind CDN runtime for better Core Web Vitals) */
:root{
  --navy:#1a3a5c; --navy-d:#0f2438; --blue:#2c5282; --blue-l:#3b7dd8;
  --accent:#c2703a; --ink:#1b2733; --muted:#5b6b7b; --line:#e2e8f0;
  --bg:#f6f8fb; --white:#fff; --ok:#0f6e56; --warn:#a35a10;
  --r:10px; --r-lg:14px; --maxw:1180px;
  --shadow:0 1px 2px rgba(16,36,56,.06),0 4px 16px rgba(16,36,56,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.68 -apple-system,BlinkMacSystemFont,"Segoe UI","Inter",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--blue-l);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{color:var(--navy-d);line-height:1.28;margin:0 0 .5em;font-weight:650}
h1,h2{text-wrap:balance}
h1{font-size:2rem;letter-spacing:-.015em}
h2{font-size:1.45rem;margin-top:1.6em}
h3{font-size:1.12rem;margin-top:1.3em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin:.3em 0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#fff;padding:10px 14px;border-radius:8px;z-index:99}
.muted{color:var(--muted);font-size:.93rem}

/* header */
.site-head{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.head-in{display:flex;align-items:center;gap:20px;min-height:68px}
.brand img{width:168px;height:auto}
.main-nav{display:flex;flex-wrap:wrap;gap:2px;margin-left:auto}
.main-nav a{padding:7px 10px;border-radius:8px;color:#33475b;font-size:.92rem;font-weight:500;white-space:nowrap}
.main-nav a:hover{background:#eef3f9;text-decoration:none}
.main-nav a.on{color:var(--navy);background:#e7eefa}
.head-cta{display:flex;align-items:center;gap:8px}
.head-cta .btn{white-space:nowrap}
/* More languages 下拉：上半区站点静态语言（EN/RU/AR）+ 下半区机器翻译 */
.lang-more{position:relative}
.lm-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;
  border-radius:999px;padding:5px 11px;font-size:.78rem;font-weight:700;letter-spacing:.04em;
  color:#44586c;cursor:pointer;font-family:inherit;line-height:1.2}
.lm-btn:hover{background:#eef4fb;color:var(--navy);border-color:#b9c6d6}
.lm-menu{position:absolute;right:0;top:calc(100% + 8px);z-index:80;width:330px;max-height:min(66vh,460px);
  overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 16px 44px rgba(16,40,70,.2);padding:12px 12px 8px;text-align:left}
.lm-menu .lm-t{font-size:.75rem;color:var(--muted);margin:0 0 10px;line-height:1.5}
.lm-site{grid-template-columns:1fr 1fr 1fr}
.lm-sep{border:0;height:1px;background:var(--line);margin:10px 0}
.lm-menu ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:2px}
.lm-menu a{display:block;padding:7px 9px;border-radius:8px;font-size:.83rem;color:#33475b;line-height:1.35}
.lm-menu a span{display:block;font-size:.72rem;color:var(--muted)}
.lm-menu a:hover{background:#eef4fb;color:var(--navy);text-decoration:none}
/* Google 翻译：隐藏官方工具条与我们自己的挂载点 */
.gt-host{position:absolute!important;left:-9999px!important;top:auto!important;width:1px;height:1px;overflow:hidden}
.skiptranslate{display:none!important}
.goog-te-banner-frame,.goog-te-balloon-frame{display:none!important}
body{top:0!important}
.btn{display:inline-block;padding:9px 16px;border-radius:8px;font-size:.9rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:background .18s,border-color .18s}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--blue)}
.btn-ghost{border-color:var(--line);color:#33475b;background:#fff}
.btn-ghost:hover{border-color:#b9c6d6;background:#f2f6fb}
.btn-outline{border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-lg{padding:12px 22px;font-size:.98rem}
@media(max-width:1040px){.main-nav{display:none}.head-cta{margin-left:auto}}
@media(max-width:560px){.head-cta .btn-ghost{display:none}.lm-menu{width:min(92vw,330px)}
  .lm-btn span{display:none}.lm-btn{padding:5px 9px}}

/* breadcrumb */
.crumb{background:#fff;border-bottom:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.crumb .wrap{padding-top:10px;padding-bottom:10px}
.crumb span[aria-hidden]{margin:0 6px;color:#b9c6d6}

/* hero（首页与内页页头共用一套文字色：白 + 单一浅蓝灰） */
.hero{background:linear-gradient(160deg,var(--navy-d) 0%,var(--navy) 58%,#24547f 100%);color:#fff;padding:62px 0 64px}
.hero-in{display:grid;grid-template-columns:minmax(0,1.48fr) minmax(290px,1fr);gap:48px;align-items:center}
.hero h1{color:#fff;font-size:2.3rem;max-width:34ch;margin-bottom:.42em}
.hero p.lead{color:#c9d8e6;font-size:1.07rem;max-width:52ch;margin-bottom:0}
.hero-acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-contact{margin:20px 0 0;font-size:.92rem;color:#c9d8e6}
.hero-contact a{color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.35)}
.hero-contact a:hover{color:#fff}
.hero-facts{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.17);
  border-radius:var(--r-lg);padding:24px 26px 26px}
.hero-facts h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.09em;color:#c9d8e6;
  margin:0 0 16px;font-weight:700}
.hero-stats{display:grid;gap:14px;margin:0;border:0;padding:0}
.hero-stats>div{padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.12)}
.hero-stats>div:last-child{border-bottom:0;padding-bottom:0}
.hero-stats b{display:block;font-size:1rem;color:#fff;margin-bottom:4px;line-height:1.4}
.hero-stats span{display:block;font-size:.88rem;color:#c9d8e6;line-height:1.5}
@media(max-width:940px){
  .hero{padding:48px 0 50px}
  .hero-in{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:1.95rem;max-width:none}
  .hero p.lead{max-width:none}
}

/* page head（内页统一页头 — 与首页 hero 同风格） */
.page-head{background:linear-gradient(160deg,var(--navy-d) 0%,var(--navy) 58%,#24547f 100%);
  color:#fff;padding:56px 0 58px}
.ph-grid{display:grid;grid-template-columns:minmax(0,1.48fr) minmax(290px,1fr);gap:48px;align-items:center}
.page-head h1{color:#fff;font-size:1.95rem;margin:0 0 .45em;max-width:none;text-wrap:balance}
.page-head .ph-lead{font-size:1.05rem;color:#c9d8e6;max-width:56ch;margin:0;text-wrap:pretty}
.page-head .ph-lead a{color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.35)}
.page-head .ph-lead a:hover{color:#fff}
.page-head .ph-meta{font-size:.9rem;color:#c9d8e6;margin:14px 0 0}
.page-head .ph-acts{margin:26px 0 0}
.page-head .ph-acts .btn-primary{background:var(--accent)}
.page-head .ph-acts .btn-primary:hover{background:#a85c2c}
.ph-after{margin-top:22px}
.ph-after .callout{text-align:left;max-width:none;margin:0}
/* About 页「at a glance」要点栅格 */
.glance{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;
  max-width:960px;margin:0 auto}
.glance div{background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:14px 16px;font-size:.92rem;color:#33475b;line-height:1.5;
  display:flex;gap:10px;align-items:flex-start}
.glance div::before{content:"\2713";flex:none;font-weight:700;color:var(--blue,#2f6fb2);margin-top:1px}
@media(max-width:940px){
  .page-head{padding:44px 0 46px}
  .ph-grid{grid-template-columns:1fr;gap:32px}
  .page-head h1{font-size:1.75rem;max-width:none}
}

/* sections */
.sec{padding:56px 0}
/* 深蓝区块（Contact 表单区等） */
.sec-navy{background:linear-gradient(160deg,var(--navy-d) 0%,var(--navy) 58%,#24547f 100%)}
.sec-navy h1{color:#fff}
.sec-navy p.lead{color:#c9d8e6}
.sec.compact{padding-top:34px}
.sec.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:74ch;margin-bottom:26px}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g3b{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s,border-color .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:#c9d8e8}
/* 卡片整体是链接时，hover 下划线会被浏览器传播到所有后代文本，这里显式关闭并用标题变色替代 */
a.card:hover,a.card:focus,a.card:focus-visible{text-decoration:none}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:#eef2f6}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.card h3{margin:0 0 6px;font-size:1.02rem;transition:color .18s}
.card:hover h3{color:var(--blue)}
.card p{color:var(--muted);font-size:.9rem;margin:0 0 12px}
.card .body>.muted:last-child{margin-top:auto;padding-top:10px;display:block}
.card .acts{margin-top:auto;display:flex;gap:8px;flex-wrap:wrap}
.card .acts .btn{padding:7px 13px;font-size:.85rem}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px}
.panel h3{margin-top:0}
/* 面板内的表格：去掉与面板重复的内边距，收紧行高，形成统一的行节奏 */
.panel table{min-width:0}
.panel table td,.panel table th{padding:10px 0;border-bottom:1px solid var(--line)}
.panel table tr:last-child td{border-bottom:0}
.panel table td.k{width:38%;padding-right:16px}
.panel table tbody tr:nth-child(even){background:transparent}
/* 双卡等高：两张卡内容长度不同也要上下对齐 */
.pair{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));align-items:stretch}
.pair>.panel{display:flex;flex-direction:column}
.pair>.panel>ul,.pair>.panel>.facts-list{margin-bottom:0}
.facts-list{list-style:none;padding:0;margin:0}
.facts-list li{margin:0;padding:10px 0;border-bottom:1px solid var(--line);font-size:.94rem;color:#33475b;line-height:1.5}
.facts-list li:last-child{border-bottom:0;padding-bottom:0}
.facts-list a{font-weight:600}
/* 联系渠道列表：标签/值两列，紧凑不空旷 */
.chan-list{list-style:none;padding:0;margin:0}
.chan-list li{display:grid;grid-template-columns:104px minmax(0,1fr);gap:14px;align-items:baseline;
  margin:0;padding:11px 0;border-bottom:1px solid var(--line);font-size:.92rem;line-height:1.5}
.chan-list li:last-child{border-bottom:0;padding-bottom:0}
.chan-k{font-weight:600;color:var(--navy-d);font-size:.84rem}
@media(max-width:1180px){.chan-list li{grid-template-columns:1fr;gap:2px}}
.pill{display:inline-block;background:#e7eefa;color:var(--navy);border-radius:999px;
  padding:3px 11px;font-size:.78rem;font-weight:600;margin:0 6px 6px 0}

/* tables */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:520px}
caption{caption-side:top;text-align:left;padding:14px 18px 8px;font-weight:600;color:var(--navy-d)}
th,td{padding:11px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:#f1f5fa;color:var(--navy);font-weight:600;font-size:.86rem;text-transform:uppercase;letter-spacing:.03em}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fafcfe}
td.k{color:var(--muted);width:34%}

/* spec + faq */
.spec th{width:34%}
.faq-list{display:grid;gap:10px}
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:0}
.faq summary{padding:14px 18px;cursor:pointer;font-weight:600;color:var(--navy-d);list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--blue);font-weight:700}
.faq[open] summary::after{content:"\2013"}
.faq>div{padding:0 18px 16px;color:#33475b}
.faq p{margin:0}

/* cta band */
.cta-band{background:var(--navy-d);color:#fff;padding:44px 0}
.cta-in{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.cta-band h2{color:#fff;margin:0 0 6px;font-size:1.4rem}
.cta-band p{margin:0;color:#b8cade;max-width:62ch}
.cta-acts{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-primary{background:var(--accent)}
.cta-band .btn-primary:hover{background:#a85c2c}

/* article */
.article{max-width:760px;margin:0 auto}
.article h1{font-size:1.9rem}
.article h2{margin-top:1.8em}
.article ul,.article ol{padding-left:1.3em}
.note{background:#fdf6ee;border-left:3px solid var(--accent);padding:14px 18px;border-radius:0 var(--r) var(--r) 0;margin:20px 0}
.callout{background:#eef5ff;border-left:3px solid var(--blue-l);padding:14px 18px;border-radius:0 var(--r) var(--r) 0;margin:20px 0}
.meta{color:var(--muted);font-size:.86rem;margin-bottom:26px}

/* steps */
.steps{display:grid;gap:16px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 22px;position:relative;padding-left:66px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:20px;top:20px;width:32px;height:32px;
  border-radius:50%;background:#e7eefa;color:var(--navy);font-weight:700;display:grid;place-items:center;font-size:.95rem}
.step h3{margin:0 0 6px}
.step p{margin:0;color:var(--muted);font-size:.93rem}

/* footer —— 统一两级文字色：标题 #fff / 全部正文与链接 #cfdcea */
.site-foot{--f-fg:#cfdcea;--f-dim:#cfdcea;background:var(--navy-d);color:var(--f-fg);
  padding:46px 0 22px;margin-top:0}
.site-foot a{color:var(--f-fg)}
.site-foot a:hover{color:#fff;text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:26px;padding:0 0 34px}
.site-foot h3{color:#fff;font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;margin:0 0 13px;font-weight:700}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin:0 0 8px;font-size:.88rem;line-height:1.5}
.site-foot li:last-child{margin-bottom:0}
.site-foot .muted{color:var(--f-dim)}
/* 页脚最底部：版权条 */
.foot-bottom{border-top:1px solid rgba(255,255,255,.13);padding-top:16px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem;color:var(--f-dim)}
@media(max-width:1000px){
  .foot-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
}
@media(max-width:640px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:420px){.foot-grid{grid-template-columns:1fr}}

/* ---------- 悬浮联系通道（收起为图标条，避免遮挡正文） ---------- */
.dock{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:9px;align-items:flex-end}
.dock-btn{display:flex;align-items:center;justify-content:center;width:46px;height:46px;padding:0;
  background:#fff;color:var(--navy);border:1px solid var(--line);border-radius:50%;
  font-size:.85rem;font-weight:600;text-decoration:none;box-shadow:0 6px 18px rgba(16,40,70,.16);
  transition:width .18s,border-radius .18s,background .18s}
.dock-btn span{display:none;white-space:nowrap}
.dock-btn:hover,.dock-btn:focus-visible{width:auto;padding:0 16px 0 13px;gap:9px;border-radius:999px;
  border-color:var(--navy);color:var(--navy-d);text-decoration:none}
.dock-btn:hover span,.dock-btn:focus-visible span{display:inline}
.dock-wa{background:#25d366;border-color:#1eb455;color:#08381f}
.dock-wa:hover{color:#08381f}
.dock-tg{background:#2aabee;border-color:#1f95d0;color:#fff}
.dock-tg:hover{color:#fff}
@media(max-width:700px){.dock{right:12px;bottom:12px}.dock-btn{width:44px;height:44px}}
@media print{.dock{display:none}}

/* ---------- 提示块 ---------- */
.notice{border-radius:var(--r-lg);padding:16px 20px;margin:18px 0;font-size:.95rem;border:1px solid}
.notice p:first-child{margin-top:0}.notice p:last-child{margin-bottom:0}
.notice b{font-weight:700}
.n-info{background:#f2f7fd;border-color:#cfe0f2}
.n-ok{background:#eef7f1;border-color:#c6e3d3}
.n-warn{background:#fdf6e3;border-color:#eddfb8}
.n-danger{background:#fdecea;border-color:#f3c4bd}

/* ---------- 合规矩阵 ---------- */
.matrix td,.matrix th{font-size:.9rem}
.matrix .ok{color:#1d6b45;font-weight:700}
.matrix .var{color:#8a5a00;font-weight:700}
.matrix .no{color:#a3302a;font-weight:700}

/* ---------- 清单 ---------- */
.chk{list-style:none;padding:0;margin:14px 0}
.chk li{position:relative;padding-left:28px;margin:.5em 0;font-size:.95rem}
.chk li::before{content:"";position:absolute;left:0;top:4px;width:15px;height:15px;border:1.6px solid var(--navy);
  border-radius:4px}
.chk-done li::before{content:"✓";display:grid;place-items:center;background:var(--navy);color:#fff;font-size:.7rem;line-height:1}

/* ---------- 下载卡 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:760px){.dl-grid{grid-template-columns:1fr}}
.dl{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 22px;display:flex;flex-direction:column}
.dl h3{margin:0 0 6px;font-size:1.02rem}
.dl p{color:var(--muted);font-size:.92rem;margin:0 0 14px}
.dl .tag{display:inline-block;align-self:flex-start;font-size:.75rem;background:#eef2f8;color:var(--navy);border-radius:4px;padding:2px 8px;margin-bottom:10px}
.dl a.btn{margin-top:auto;align-self:flex-start}

/* ---------- 表单 ---------- */
.rfq{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:5px}
.field.full{grid-column:1 / -1}
.field label{font-size:.85rem;font-weight:600;color:var(--navy-d)}
.field .hint{font-size:.78rem;color:var(--muted)}
.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:8px;padding:10px 12px;
  font:inherit;font-size:.95rem;background:#fbfcfe;color:inherit}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid #bcd4ef;border-color:var(--navy)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-ok{background:#eef7f1;border:1px solid #c6e3d3;border-radius:var(--r-lg);padding:18px 20px;margin:16px 0}

/* ---------- 对照表筛选 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}
.filter-bar input,.filter-bar select{border:1px solid var(--line);border-radius:8px;padding:9px 12px;font:inherit;font-size:.92rem}
.xref td:first-child{font-weight:600;color:var(--navy-d)}
.xref tr[hidden]{display:none}

/* ---------- 打印 ---------- */
@media print{
  .site-head,.site-foot,.dock,.cta-band,.crumb{display:none!important}
  body{background:#fff}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:.8em;color:#555}
}