@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Manrope:wght@600;700;800&display=swap');
/* ============================================================
   YENYONG — shared base stylesheet for content pages
   Design tokens mirror the homepage (index.html) inline CSS.
   ============================================================ */
:root{
  --blue:#1F3AA0; --blue2:#2347C5; --ink:#0A0E1A; --gray:#6B6B6B;
  --lt:#F5F7FF; --border:#E8EAF0;
  --font-body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-display:'Manrope','Inter',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-x:clip}
html{overflow-x:hidden;overflow-x:clip}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1280px;margin:0 auto;padding:0 48px}
.eyebrow{font-size:11px;letter-spacing:3px;text-transform:uppercase;font-weight:700;color:var(--blue);margin-bottom:14px}
h1,h2,h3{font-family:var(--font-display);line-height:1.12;letter-spacing:-.5px}
h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:18px}
h3{font-size:19px;margin-bottom:10px}
p{color:var(--gray);margin-bottom:14px}
.lead{font-size:18px;color:#3a4256;max-width:760px}

/* ---------- top nav (light, sticky) ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:1px;color:var(--ink)}
.brand .lm-fill{fill:var(--blue)}
.brand .lm-void{fill:#fff}
.brand .logo-img{height:30px;width:auto;display:block}
.site-footer .brand .logo-img{background:#fff;border-radius:6px;padding:5px;box-sizing:border-box}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:13px;font-weight:600;color:#2b3142;transition:.15s}
.nav-links a:hover{color:var(--blue)}
/* ── NAV DROPDOWN（与首页一致） ── */
.nav-links li{position:relative;list-style:none}
.nav-links li.has-drop > a::after{content:'';display:inline-block;width:4px;height:4px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-left:7px;vertical-align:middle;opacity:.5;transition:.15s}
.nav-links li.has-drop:hover > a::after{opacity:1;transform:rotate(45deg) translateY(2px)}
.nav-links li.has-drop.open > a::after{opacity:1;transform:rotate(-135deg)}
.drop{display:none;position:absolute;top:100%;left:-12px;background:#fff;border:1px solid var(--border);border-top:3px solid var(--blue);min-width:252px;box-shadow:0 18px 44px rgba(10,14,26,.12);padding:8px 0;z-index:300;max-height:calc(100vh - 80px);overflow:auto}
.nav-links li.has-drop:hover .drop,.nav-links li.has-drop.open .drop{display:block}
.drop-head{font-size:8px;letter-spacing:2px;text-transform:uppercase;color:#BBBBBB;padding:10px 18px 4px;font-weight:700}
.drop a{display:block;font-size:11px;color:var(--ink);padding:8px 18px;letter-spacing:0;text-transform:none;transition:.12s}
.drop a.d-num{display:flex;gap:12px;align-items:baseline}
.drop .dn{min-width:18px;display:inline-block;text-align:right}
.drop a:hover{background:var(--lt);color:var(--blue)}
.drop-cta{margin-top:6px;border-top:1px solid var(--border);padding-top:10px!important;color:var(--blue)!important;font-weight:700}
.drop a.cat{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:10.5px}
.drop a.cat em{font-style:normal;font-size:8px;letter-spacing:.5px;background:var(--lt);color:var(--blue);border:1px solid var(--border);border-radius:3px;padding:2px 5px;font-weight:700;white-space:nowrap}
.nav-cta{background:var(--blue);color:#fff;padding:10px 20px;border-radius:4px;font-size:11px;letter-spacing:2px;text-transform:uppercase;font-weight:700}
.nav-cta:hover{background:var(--blue2)}
.nav-lang{display:flex;border:1px solid var(--border);border-radius:20px;overflow:hidden}
.nav-lang a{padding:7px 12px;font-size:10px;letter-spacing:1px;font-weight:700;color:var(--gray);border-right:1px solid var(--border)}
.nav-lang a:last-child{border-right:none}
.nav-lang a.on,.nav-lang a:hover{background:var(--lt);color:var(--blue)}
.nav-burger{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;width:40px;height:40px;justify-content:center;align-items:center;padding:0;margin-left:auto}
.nav-burger span{width:22px;height:2px;background:var(--ink);display:block;transition:.25s}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
body.lock{overflow:hidden}

/* 移动端：汉堡菜单内的语言条（克隆顶部 .nav-lang，复用各页正确链接） */
.m-lang-li{display:none}
@media (max-width:960px){
  .nav-links.open .m-lang-li{display:block;margin-top:6px;padding:14px 6px 8px;border-top:1px solid var(--border)}
  .m-lang-li .nav-lang{display:flex;flex-wrap:wrap;gap:8px;border:none;border-radius:0;overflow:visible}
  .m-lang-li .nav-lang a{font-size:13px;font-weight:700;padding:9px 13px;border:1px solid var(--border);border-radius:18px}
  .m-lang-li .nav-lang a.on{background:var(--blue);color:#fff;border-color:var(--blue)}
}

/* ---------- hero ---------- */
.page-hero{background:linear-gradient(135deg,#2347C5 0%,#1F3AA0 55%,#17308F 100%);color:#fff;padding:110px 0 84px;position:relative;overflow:hidden;border-bottom:2px solid var(--blue)}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,14,26,.92),rgba(31,58,160,.55))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(32px,5vw,56px);margin-bottom:18px}
.page-hero p{color:rgba(255,255,255,.82);font-size:18px;max-width:680px}
.page-hero .crumbs{font-size:12px;letter-spacing:1px;color:rgba(255,255,255,.6);margin-bottom:18px}
.page-hero .crumbs a:hover{color:#fff}

/* ---------- buttons ---------- */
.btn-primary{display:inline-block;background:var(--blue);color:#fff;padding:14px 30px;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;font-weight:700;border:2px solid var(--blue);transition:.15s;cursor:pointer}
.btn-primary:hover{background:var(--blue2);border-color:var(--blue2)}
.btn-outline{display:inline-block;background:#fff;color:var(--blue);padding:13px 28px;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;font-weight:700;border:2px solid var(--border);transition:.15s;cursor:pointer}
.btn-outline:hover{border-color:var(--blue);background:var(--lt)}
.btn-ghost{display:inline-block;background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4);padding:13px 28px;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;font-weight:700;transition:.15s;cursor:pointer}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ---------- sections ---------- */
.section{padding:84px 0}
.section.alt{background:var(--lt)}
.section-head{max-width:760px;margin-bottom:46px}
.section-head p{font-size:16px}

/* ---------- decor / color library ---------- */
.prod-block{padding:64px 0;border-top:1px solid var(--border)}
.prod-block:first-of-type{border-top:none}
.prod-block h2{display:flex;align-items:baseline;gap:14px}
.prod-block .pn{font-size:13px;color:var(--gray);font-weight:600;font-family:var(--font-body)}
.decor-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.decor-card{background:#fff;border:1px solid var(--border);border-radius:8px;overflow:hidden;transition:.18s;display:flex;flex-direction:column}
.decor-card:hover{box-shadow:0 10px 30px rgba(10,14,26,.10);transform:translateY(-3px)}
.swatch{height:140px;position:relative;border-bottom:1px solid var(--border)}
.swatch .code{position:absolute;top:8px;left:8px;background:rgba(255,255,255,.85);font-size:10px;font-weight:700;letter-spacing:1px;padding:3px 7px;border-radius:3px;color:var(--ink)}
.decor-meta{padding:13px 14px;display:flex;flex-direction:column;gap:4px;flex:1}
.decor-name{font-size:13px;font-weight:700;color:var(--ink)}
.decor-fam{font-size:11px;color:var(--gray);letter-spacing:.5px}
.decor-meta .btn-outline{margin-top:8px;text-align:center;font-size:10px;padding:9px 10px;letter-spacing:1.5px}
.fam-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.fam-filter button{border:1px solid var(--border);background:#fff;color:var(--gray);padding:8px 16px;border-radius:20px;font-size:11px;letter-spacing:1px;font-weight:700;cursor:pointer;transition:.15s}
.fam-filter button.on,.fam-filter button:hover{border-color:var(--blue);color:var(--blue);background:var(--lt)}

/* ---------- projects ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.proj-card{background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:.18s}
.proj-card:hover{box-shadow:0 14px 40px rgba(10,14,26,.12);transform:translateY(-4px)}
.proj-media{height:240px;background:linear-gradient(135deg,var(--blue2),#16295F);position:relative;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.85);font-size:13px;letter-spacing:2px;text-transform:uppercase}
.proj-media .ph{position:absolute;bottom:12px;left:16px;font-size:11px;letter-spacing:1px;text-transform:none;color:rgba(255,255,255,.7)}
.proj-body{padding:24px 26px}
.proj-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.proj-tag{background:var(--lt);color:var(--blue);font-size:11px;font-weight:700;letter-spacing:.5px;padding:5px 11px;border-radius:20px}
.proj-spec{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin:16px 0;font-size:13px}
.proj-spec div{display:flex;justify-content:space-between;border-bottom:1px dashed var(--border);padding-bottom:6px}
.proj-spec span:first-child{color:var(--gray)}
.proj-spec span:last-child{font-weight:600;color:var(--ink)}

/* ---------- downloads ---------- */
.doc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.doc-card{background:#fff;border:1px solid var(--border);border-top:3px solid var(--blue);border-radius:8px;padding:26px 24px;display:flex;flex-direction:column;gap:12px;transition:.18s}
.doc-card:hover{background:var(--lt)}
.doc-card .dt{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--blue);font-weight:700}
.doc-card h3{font-size:17px}
.doc-card p{font-size:13px;margin-bottom:auto}
.doc-card .meta{font-size:12px;color:var(--gray)}
.doc-card .btn-primary,.doc-card .btn-outline{text-align:center;font-size:10px;padding:11px}
.doc-card .btn-outline{color:var(--gray);border-color:var(--border)}
.lead-form{background:linear-gradient(135deg,#2347C5 0%,#1F3AA0 55%,#17308F 100%);color:#fff;border-radius:12px;padding:40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;margin-top:40px}
.lead-form h3{color:#fff}
.lead-form p{color:rgba(255,255,255,.75);margin-bottom:0}

/* ---------- insights / news ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.post-card{background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:.18s;display:flex;flex-direction:column}
.post-card:hover{box-shadow:0 14px 40px rgba(10,14,26,.12);transform:translateY(-4px)}
.post-media{height:170px;background:linear-gradient(135deg,var(--blue2),#16295F);position:relative;display:flex;align-items:flex-end;padding:16px;color:#fff;font-size:11px;letter-spacing:1px}
.post-body{padding:22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-cat{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--blue);font-weight:700}
.post-body h3{font-size:18px}
.post-body p{font-size:13px;flex:1}
.read-more{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.5px}
.post-body .date{font-size:12px;color:var(--gray)}

/* ---------- article view ---------- */
.article{max-width:760px;margin:0 auto;padding:70px 0}
.article h1{font-size:clamp(28px,4vw,42px);margin-bottom:16px}
.article .meta{color:var(--gray);font-size:13px;margin-bottom:28px;border-bottom:1px solid var(--border);padding-bottom:18px}
.article h2{font-size:24px;margin-top:34px}
.article ul,.article ol{margin:0 0 16px 22px;color:var(--gray)}
.article li{margin-bottom:8px}
.article blockquote{border-left:4px solid var(--blue);padding:6px 20px;margin:20px 0;color:#3a4256;font-style:italic;background:var(--lt);border-radius:0 6px 6px 0}
.article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.article th,.article td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.article th{background:var(--lt);color:var(--ink);font-weight:700}

/* ---------- footer ---------- */
.site-footer{background:#16295F;color:rgba(255,255,255,.7);padding:60px 0 30px}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;font-size:13px;letter-spacing:1px;text-transform:uppercase;margin-bottom:16px;font-family:var(--font-body)}
.site-footer a{display:block;font-size:13px;margin-bottom:9px;color:rgba(255,255,255,.7)}
.site-footer a:hover{color:#fff}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .fnote{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.site-footer .fnote a{display:inline;color:rgba(255,255,255,.6)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--blue);color:#fff;text-align:center;padding:70px 0}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.85);max-width:620px;margin:0 auto 26px}

/* ---------- stats band ---------- */
.stats-band{background:var(--lt);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:46px 0}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.stat b{display:block;font-family:var(--font-display);font-size:clamp(30px,4vw,46px);font-weight:800;color:var(--blue);line-height:1}
.stat span{display:block;margin-top:10px;font-size:14px;font-weight:600;color:var(--gray);text-transform:uppercase;letter-spacing:1px}

/* ============================================================
   响应式体系：桌面 (≥1025) / 平板 iPad (961–1024) / 手机 (≤960)
   设计原则：导航在 ≤960 统一切汉堡面板（保证 6 个平铺链接在
   iPad/手机不溢出）；网格密度随视口平滑降档；触控目标 ≥44px。
   ============================================================ */

/* ---------- 平板 / iPad 专项（961–1024） ---------- */
@media (max-width:1024px){
  .wrap{padding:0 32px}
  .decor-grid{grid-template-columns:repeat(4,1fr)}
  .proj-grid{grid-template-columns:1fr 1fr}
  .doc-grid,.post-grid{grid-template-columns:1fr 1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr 1fr}
  .page-hero{padding:96px 0 70px}
  .section{padding:72px 0}
  /* 平板下隐藏导航 CTA，避免德文等长词在 1024 下横向溢出 */
  .nav-cta{display:none}
}

/* ---------- 导航切换：iPad 竖屏 + 手机（≤960） ---------- */
@media (max-width:960px){
  .nav-burger{display:flex}
  .nav-links{display:none;position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 22px;border-bottom:3px solid var(--blue);box-shadow:0 24px 48px rgba(10,14,26,.15);max-height:calc(100vh - 66px);overflow-y:auto;z-index:250}
  .nav-links.open{display:flex}
  .nav-links a{display:block;font-size:15px;font-weight:600;color:var(--ink);padding:15px 6px;border-bottom:1px solid var(--border)}
  .nav-links a.on{color:var(--blue);background:var(--lt)}
  .drop{display:block;position:static;box-shadow:none;border:none;border-left:2px solid var(--lt);min-width:0;padding:2px 0 8px 12px;margin:0 0 10px}
  .drop a{padding:7px 12px}
}

/* ---------- 手机 / 小平板（≤640） ---------- */
@media (max-width:640px){
  .wrap{padding:0 20px}
  /* 手机端隐藏语言切换条（其内 nav-cta 已隐藏），避免与 brand/汉堡挤压重叠 */
  .site-nav .wrap > div:last-child{display:none!important}
  /* 首页（index.html）多处写死的 48px 区块内边距，手机端压到 20px，杜绝横向溢出 */
  .proof,.stmt,.sec,.sup,.hww,.contact-bg,footer,.hero,#topBar,.nav-in,.ct-left,.ct-right{padding-left:20px!important;padding-right:20px!important}
  .nav-cta{display:none}
  .decor-grid{grid-template-columns:repeat(2,1fr)}
  .proj-grid,.doc-grid,.post-grid{grid-template-columns:1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .page-hero{padding:84px 0 58px}
  .page-hero h1{font-size:clamp(28px,8vw,40px)}
  .page-hero p{font-size:16px}
  .section{padding:54px 0}
  .section-head{margin-bottom:32px}
  .stats-grid{grid-template-columns:1fr;gap:26px}
  .lead-form{flex-direction:column;align-items:flex-start;padding:28px;gap:18px}
  .lead-form .btn-primary,.lead-form .btn-outline{width:100%;text-align:center}
  h2{font-size:clamp(24px,6.5vw,32px)}
  .article{padding:46px 0}
  .article h1{font-size:clamp(26px,7vw,34px)}
  .btn-primary,.btn-outline,.btn-ghost{padding:15px 24px;font-size:11px}
  .fam-filter button{padding:10px 15px;font-size:11px}
  .proj-spec{grid-template-columns:1fr}
  .proj-media{height:200px}
  .post-media{height:150px}
  .doc-card{padding:22px 20px}
}

/* ---------- 超小屏（≤380） ---------- */
@media (max-width:380px){
  .site-footer .cols{grid-template-columns:1fr}
}