/* four-point philosophy */
:root{
  --navy:#0d1b2a;
  --navy-2:#152a41;
  --steel:#4a5c6e;
  --line:#e5e7eb;
  --bg:#f5f7fa;
  --white:#fff;
  --orange:#e8590c;
  --orange-dark:#c2410c;
  --blue:#1d6fd6;
  --blue-dark:#1559b0;
  --green:#0f7b4f;
  --text:#1b2733;
  --muted:#5b6b7c;
  --radius:6px;
  --shadow:0 2px 10px rgba(13,27,42,.08);
  --wrap:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Segoe UI",Roboto,-apple-system,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;font-size:16px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6em;color:var(--navy)}
h1{font-size:2.35rem;letter-spacing:-.5px}
h2{font-size:1.75rem}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.center{text-align:center}
.muted{color:var(--muted)}
.small{font-size:.88rem}

/* ---------- top bar + header ---------- */
.topbar{background:var(--navy);color:#c9d6e3;font-size:.85rem}
.topbar .wrap{display:flex;gap:18px;justify-content:space-between;align-items:center;flex-wrap:wrap;padding:8px 22px}
.topbar a{color:#eaf1f8}
.topbar a:hover{color:var(--orange)}
.topbar .tb-right{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
header.site{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 22px;max-width:var(--wrap);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;color:var(--navy);font-size:1.05rem}
.brand .logo{width:42px;height:42px;border-radius:8px;background:linear-gradient(135deg,var(--navy),var(--steel));color:#fff;display:grid;place-items:center;font-size:1.15rem}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:.74rem;letter-spacing:.4px}
nav.main{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
nav.main a{font-weight:600;font-size:.94rem;color:var(--navy-2);padding:4px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a[aria-current="page"]{color:var(--orange);border-color:var(--orange)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:4px;font-weight:700;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:.18s}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-2)}
.btn-ghost{border-color:#c8d4e0;color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--navy);}
.btn-wa{background:var(--blue);color:#fff}
.btn-wa:hover{background:var(--blue-dark)}

/* ---------- hero ---------- */
.hero{background:linear-gradient(120deg,var(--navy) 0%,var(--navy-2) 55%,#1d3c5c 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(232,89,12,.16)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{color:#fff;font-size:2.6rem;text-shadow:0 2px 12px rgba(6,14,24,.55)}
.hero p.lead{color:#e6eefa;font-size:1.08rem;max-width:640px;text-shadow:0 1px 8px rgba(6,14,24,.6)}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.badge{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);padding:7px 13px;border-radius:999px;font-size:.82rem;color:#e8f0f8}
.hero-card{background:rgba(10,22,36,.55);border:1px solid rgba(255,255,255,.22);border-radius:var(--radius);padding:22px;backdrop-filter:blur(6px)}
.hero-card h2,.hero-card h3{color:#fff;font-size:1rem;text-transform:uppercase;letter-spacing:.8px}
.hero-card ul{margin:0;padding-left:18px;color:#dbe6f2;font-size:.93rem}
.hero-card li{margin-bottom:6px}

/* ---------- generic sections ---------- */
section{padding:58px 0}
section.alt{background:#fff}
.sec-head{max-width:790px;margin:0 auto 34px;text-align:center}
.sec-head p{color:var(--muted)}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--orange-dark);margin-bottom:10px}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.grid>*{min-width:0}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.18s}
.card:hover{transform:translateY(-3px);border-color:#c9d6e3}
.card h3{margin-top:0}
.card .ico{font-size:1.6rem;display:block;margin-bottom:10px}
.card ul{margin:.4em 0 0;padding-left:18px;color:var(--muted);font-size:.92rem}
.tagline{font-size:.82rem;color:var(--orange);font-weight:700;letter-spacing:.6px;text-transform:uppercase}
.card a.more{display:inline-block;margin-top:12px;font-weight:700;color:var(--orange);font-size:.9rem}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;min-width:0;max-width:100%}
table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:560px}
th,td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#eef3f8;color:var(--navy);font-weight:700;white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#f9fbfd}

/* ---------- process timeline ---------- */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:16px;width:30px;height:30px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.9rem}
.step h3,.step h4{margin:14px 0 6px;font-size:.98rem}
.step p{font-size:.85rem;color:var(--muted);margin:0}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%}
.gallery figcaption{padding:10px 14px;font-size:.86rem;color:var(--muted)}

/* ---------- FAQ ---------- */
details.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin-bottom:12px}
details.faq summary{font-weight:700;color:var(--navy);cursor:pointer;font-size:1rem}
details.faq p{margin:12px 0 0;color:var(--muted)}

/* ---------- forms ---------- */
form.inquiry{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.field{margin-bottom:14px}
.field label{display:block;font-size:.86rem;font-weight:700;margin-bottom:6px;color:var(--navy)}
.field input,.field select,.field textarea{
width:100%;padding:11px 13px;border:1px solid #cbd6e2;border-radius:4px;font:inherit;background:#fbfdff;color:var(--text)
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid rgba(232,89,12,.35);border-color:var(--orange)}
.form-note{font-size:.8rem;color:var(--muted);margin-top:10px}

/* ---------- callout ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy),#1d3c5c);color:#fff;border-radius:var(--radius);padding:38px;display:flex;gap:26px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{color:#cfdcea;margin:0}

/* ---------- language brief ---------- */
.lang-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.lang-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.lang-card .flag{font-size:1.3rem;margin-bottom:8px;display:block}
.ar{direction:rtl;text-align:right}

/* ---------- footer ---------- */
footer.site{background:var(--navy);color:#b9c8d8;padding:46px 0 22px;font-size:.92rem}
footer.site h3,footer.site h4{color:#fff;font-size:.95rem;text-transform:uppercase;letter-spacing:.8px;margin-bottom:14px}
footer.site a{color:#cfdcea}
footer.site a:hover{color:var(--orange)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:8px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:32px;padding-top:16px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.84rem}

/* ---------- floating WhatsApp ---------- */
.float-wa{position:fixed;right:18px;bottom:18px;z-index:70;background:var(--blue);color:#fff;border-radius:999px;padding:13px 18px;font-weight:700;box-shadow:0 8px 22px rgba(0,0,0,.22);display:flex;align-items:center;gap:8px}
.float-wa:hover{background:var(--blue-dark)}

/* ---------- breadcrumb / page hero ---------- */
.page-head{background:linear-gradient(120deg,var(--navy),#1d3c5c);color:#fff;padding:44px 0}
.page-head h1{color:#fff;margin-bottom:.35em}
.page-head p{color:#cfdcea;max-width:760px;margin:0}
.crumbs{font-size:.82rem;color:#9fb3c8;margin-bottom:12px}
.crumbs a{color:#cfdcea}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.prose h2{margin-top:1.4em}
.prose h2:first-child{margin-top:0}
.prose ul{padding-left:20px}
.prose li{margin-bottom:7px}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.kpi b{display:block;font-size:1.9rem;color:var(--navy);line-height:1.1}
.kpi span{font-size:.86rem;color:var(--muted)}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .hero .wrap{grid-template-columns:1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-row{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  h1{font-size:1.6rem}
  .hero h1{font-size:1.62rem}
  h2{font-size:1.4rem}
  section{padding:42px 0}
  .g2,.g3,.g4,.steps,.gallery,.lang-grid{grid-template-columns:1fr}
  /* 手机端不显示顶部信息条：联系方式在询盘区和页脚都有，把首屏让给标题和询盘入口 */
  .topbar{display:none}
  /* 手机端保留导航：改成一行可横向滑动的菜单，而不是整个隐藏 */
  .nav-row{flex-wrap:wrap;gap:8px;padding:8px 14px}
  .brand{font-size:.95rem}
  .brand .logo{width:34px;height:34px;font-size:1rem}
  .brand small{font-size:.68rem}
  .nav-row>.btn{padding:9px 14px;font-size:.85rem}
  nav.main{display:flex;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:16px}
  nav.main a{font-size:.9rem;white-space:nowrap}
  .lang-switch{display:flex;gap:6px;margin-left:auto}
  .lang-switch a{padding:4px 9px;font-size:.82rem}
  .cta-band{padding:26px}
  /* 首屏先保证询盘入口拿得到：收紧留白，主按钮整行显示 */
  .hero{padding:20px 0 56px}
  .hero .wrap{gap:20px}
  .hero p.lead{font-size:.98rem}
  .hero .cta-row .btn{width:100%;justify-content:center;text-align:center}
  .hero .badge-row{margin-top:16px}
  /* 悬浮 WhatsApp 收成圆形，并且在滚过首屏后才出现，不再压住询盘按钮 */
  .float-wa{right:14px;bottom:14px;width:54px;height:54px;padding:0;border-radius:50%;justify-content:center;font-size:1.3rem;gap:0;opacity:0;pointer-events:none;transition:opacity .18s ease}
  .float-wa .wa-label{display:none}
  .float-wa.is-visible{opacity:1;pointer-events:auto}
}

/* ==========================================================================
   LSAW capability components (2026-09 renovation)
   ========================================================================== */

/* hero with real photograph */
.hero.photo{background:linear-gradient(100deg,#e6f2fd 0%,#d5e8f9 44%,rgba(213,232,249,.34) 100%),url("images/pipeline-trench.jpg") center/cover no-repeat}
.hero.photo::after{display:none}

/* light-blue hero: dark type on a light base */
.hero.photo h1{color:var(--navy);text-shadow:none}
.hero.photo p.lead{color:#3c5266;text-shadow:none}
.hero.photo .badge{background:rgba(255,255,255,.75);border-color:rgba(255,255,255,.9);color:#2f4457}
.hero.photo .hero-card{background:#fff;border-color:rgba(13,27,42,.1);box-shadow:0 14px 32px rgba(13,27,42,.1);backdrop-filter:none}
.hero.photo .hero-card h2,.hero.photo .hero-card h3{color:var(--navy)}
.hero.photo .hero-card ul{color:#3c5266}
.hero.photo .hero-note{color:#54697d}

/* narrow screens: text sits over the whole photo, so keep a stronger vertical scrim */
@media (max-width:1000px){
  .hero.photo{background:linear-gradient(180deg,#e6f2fd 0%,#d9eafa 58%,rgba(217,234,250,.82) 100%),url("images/pipeline-trench.jpg") center/cover no-repeat}
}
.hero .hero-note{font-size:.86rem;color:#9fb3c8;margin-top:14px}

/* figure with caption used for real photos */
.photo-fig{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff}
.photo-fig img{width:100%;aspect-ratio:16/10;object-fit:cover}
.photo-fig figcaption{padding:10px 14px;font-size:.85rem;color:var(--muted);background:#fff}
/* four-point philosophy */
.photo-fig img[src$=".svg"]{aspect-ratio:auto;height:auto;object-fit:contain;background:#f6f8fb}

/* capability table: two workshops side by side */
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.cap-card header{background:var(--navy);color:#fff;padding:14px 20px}
.cap-card header h3{color:#fff;margin:0;font-size:1.02rem}
.cap-card header span{font-size:.8rem;color:#9fb3c8}
.cap-card .body{padding:18px 20px}
.cap-card dl{display:grid;grid-template-columns:auto 1fr;gap:8px 14px;margin:0;font-size:.92rem}
.cap-card dt{color:var(--muted)}
.cap-card dd{margin:0;font-weight:600;color:var(--navy)}

/* grade strip */
.grade-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.grade-strip span{background:#eef3f8;border:1px solid var(--line);border-radius:6px;padding:6px 11px;font-size:.84rem;font-weight:600;color:var(--navy-2)}

/* 11 x 100% inspection checklist */
.checks{display:grid;grid-template-columns:1fr 1fr;gap:10px 26px;margin:0;padding:0;list-style:none}
.checks li{position:relative;padding-left:30px;font-size:.94rem;color:var(--text)}
.checks li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:.72rem;line-height:1}
.checks li small{display:block;color:var(--muted);font-size:.8rem}

/* capability feature list with icons */
.feature{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.feature .fi{font-size:1.5rem;line-height:1}
.feature h3,.feature h4{margin:0 0 4px;font-size:.98rem}
.feature p{margin:0;font-size:.88rem;color:var(--muted)}

/* four-point philosophy */
.philo{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.philo article{background:#fff;border:1px solid var(--line);border-top:4px solid var(--orange);border-radius:var(--radius);padding:22px}
.philo h3{margin:0 0 4px;font-size:1.05rem}
.philo .latin{font-size:.78rem;letter-spacing:1px;text-transform:uppercase;color:var(--orange);font-weight:700}
.philo p{font-size:.88rem;color:var(--muted);margin:10px 0 0}

/* service promise cards */
.promise{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.promise article{background:linear-gradient(160deg,#fff,#f4f8fc);border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center}
.promise b{display:block;font-size:1.7rem;color:var(--orange);line-height:1.1;margin-bottom:6px}
.promise span{font-size:.9rem;color:var(--navy);font-weight:600}
.promise small{display:block;margin-top:8px;color:var(--muted);font-size:.82rem}

/* application cards with photo */
.app-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.app-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.app-card .ac-body{padding:20px 22px;flex:1;display:flex;flex-direction:column}
.app-card h3{margin:0 0 8px}
.app-card p{font-size:.9rem;color:var(--muted)}
.app-card .std{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);font-size:.8rem;color:var(--navy-2);font-weight:600}

/* standard pills in a table row */
.pill{display:inline-block;background:#eef3f8;border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:.78rem;margin:0 4px 4px 0;color:var(--navy-2);font-weight:600;white-space:nowrap}

@media (max-width:1000px){
  .cap-grid{grid-template-columns:1fr}
  .philo{grid-template-columns:repeat(2,1fr)}
  .promise{grid-template-columns:1fr}
  .checks{grid-template-columns:1fr}
}

/* trust strip with reference client names */
.trust-strip{background:#0a1522;border-bottom:1px solid rgba(255,255,255,.08);padding:16px 0}
.trust-strip .wrap{display:flex;align-items:center;gap:20px;flex-wrap:wrap;justify-content:center}
.trust-strip .ts-label{color:#8fa6bd;font-size:.82rem;letter-spacing:.6px;text-transform:uppercase;white-space:nowrap}
.trust-strip .ts-list{display:flex;gap:22px;flex-wrap:wrap;justify-content:center}
.trust-strip .ts-list span{color:#dfe9f3;font-weight:700;font-size:.95rem;letter-spacing:.5px;opacity:.92}

/* catalogue index chips */
.cat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 26px;margin:0;padding:0;list-style:none}
.cat-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:.94rem}
.cat-list li a{font-weight:700;color:var(--navy)}
.cat-list li a:hover{color:var(--orange)}
.cat-list li span{color:var(--muted);font-size:.86rem;display:block}

@media (max-width:640px){ .cat-list{grid-template-columns:1fr} }

/* ==========================================================================
   RTL support (Arabic pages)
   ========================================================================== */
/* language switcher in the header */
.lang-switch{display:flex;gap:6px;align-items:center}
.lang-switch a{font-size:.76rem;font-weight:700;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:4px 7px;line-height:1}
.lang-switch a.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.lang-switch a:hover{color:var(--orange);border-color:var(--orange)}
@media (max-width:640px){ .lang-switch{display:flex;flex-wrap:wrap;gap:6px} }

[dir="rtl"]{text-align:right}
[dir="rtl"] body{direction:rtl}
[dir="rtl"] .checks li{padding-left:0;padding-right:30px}
[dir="rtl"] .checks li::before{left:auto;right:0}
[dir="rtl"] .step::before{left:auto;right:16px}
[dir="rtl"] .float-wa{right:auto;left:18px;flex-direction:row-reverse}
[dir="rtl"] table th,[dir="rtl"] table td{text-align:right}
[dir="rtl"] .prose ul,[dir="rtl"] .card ul,[dir="rtl"] .hero-card ul{padding-left:0;padding-right:20px}
[dir="rtl"] .crumbs{direction:rtl}
[dir="rtl"] .brand,[dir="rtl"] .tb-right,[dir="rtl"] .cta-row,[dir="rtl"] .badge-row,[dir="rtl"] .grade-strip{flex-direction:row-reverse}
[dir="rtl"] .feature{flex-direction:row-reverse}
[dir="rtl"] .step{text-align:right}
/* keep phone numbers and e-mail addresses left-to-right inside RTL text */
[dir="rtl"] [data-tel],[dir="rtl"] [data-email-text]{direction:ltr;unicode-bidi:embed;display:inline-block}
[dir="rtl"] .tb-right a{direction:ltr}
[dir="rtl"] .lang-switch,[dir="rtl"] .nav-row div[style*="display:flex"]{flex-direction:row}