/* ==========================================================================
   China Steel Factory Inspection & Sourcing — Tangshan
   Single-page landing stylesheet
   ========================================================================== */

:root{
  --ink:#0b1117;
  --ink-2:#111a22;
  --ink-3:#18232c;
  --steel-900:#0e161d;
  --steel-800:#16212a;
  --steel-700:#22303b;
  --steel-600:#33454f;
  --steel-500:#5b7280;
  --steel-400:#8fa3ae;
  --steel-200:#d5dee4;
  --steel-100:#eef2f5;
  --paper:#ffffff;
  --paper-2:#f6f8f9;
  --line:#e2e8ec;
  --line-dark:rgba(255,255,255,.12);
  --molten:#c65312;
  --molten-2:#f5893a;
  --molten-soft:#fdf0e6;
  --molten-ink:#b04a14;
  --ok:#1f8a5b;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(11,17,23,.06),0 2px 8px rgba(11,17,23,.05);
  --shadow-md:0 6px 18px rgba(11,17,23,.08),0 18px 48px rgba(11,17,23,.08);
  --shadow-lg:0 24px 70px rgba(11,17,23,.18);
  --wrap:1160px;
  --header-h:68px;
  --font: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 12px);
}

body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:22px}
.section{padding:clamp(56px,7vw,104px) 0}
.section--tight{padding:clamp(40px,5vw,72px) 0}

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:12px 18px;border-radius:0 0 10px 0;font-weight:600;
}
.skip:focus{left:0}
:focus-visible{outline:3px solid var(--molten-2);outline-offset:3px;border-radius:4px}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--molten-ink);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--molten);border-radius:2px}
.eyebrow--light{color:var(--molten-2)}
.eyebrow--light::before{background:var(--molten-2)}

.h2{font-size:clamp(1.65rem,3.1vw,2.5rem);letter-spacing:-.025em}
.lead{font-size:clamp(1rem,1.4vw,1.14rem);color:var(--steel-500);line-height:1.7;max-width:62ch}
.section-head{max-width:760px;margin-bottom:clamp(30px,4vw,52px)}
.section-head .h2{margin-bottom:16px}

.btn{
  --btn-bg:var(--molten);--btn-fg:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 24px;border-radius:999px;border:1px solid transparent;
  background:var(--btn-bg);color:var(--btn-fg);
  font-size:.95rem;font-weight:650;letter-spacing:.005em;text-decoration:none;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  box-shadow:0 6px 18px rgba(198,83,18,.26);
  white-space:nowrap;
}
.btn:hover{background:#a8450b;transform:translateY(-1px);box-shadow:0 10px 26px rgba(198,83,18,.34)}
.btn:active{transform:translateY(0)}
.btn svg{flex:none}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line);box-shadow:none}
.btn--ghost:hover{background:var(--paper-2);border-color:var(--steel-200);box-shadow:var(--shadow-sm)}
.btn--onDark{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.24);box-shadow:none;backdrop-filter:blur(6px)}
.btn--onDark:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.btn--lg{padding:17px 30px;font-size:1rem}
.btn--block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

.link-arrow{
  display:inline-flex;align-items:center;gap:7px;min-height:44px;font-weight:650;font-size:.94rem;
  color:var(--molten-ink);text-decoration:none;border-bottom:1px solid transparent;
}
.link-arrow:hover{border-bottom-color:currentColor}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(3px)}

.header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,17,23,.92);
  border-bottom:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(140%);
}
.header__inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;min-width:0;min-height:44px}
.brand__mark{flex:none;width:34px;height:34px}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__name{font-size:.95rem;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand__sub{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel-400);white-space:nowrap}

.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:.875rem;font-weight:550;color:var(--steel-200);text-decoration:none;padding:6px 0;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.nav a:hover{color:#fff;border-bottom-color:var(--molten)}
.nav a.btn,.nav a.btn:hover{color:#fff;border-bottom:0}
.header .btn{padding:11px 20px;font-size:.875rem;border-bottom:0}

.nav-toggle{
  display:none;background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:10px;
  width:44px;height:44px;padding:0;cursor:pointer;color:#fff;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:rgba(255,255,255,.08)}

.hero{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--steel-900);color:#fff;
  padding:clamp(64px,9vw,116px) 0 clamp(56px,7vw,88px);
}
.hero__bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url("../../img/hero-coils.svg");
  background-size:cover;background-position:center 42%;
}
.hero__scrim{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(900px 520px at 76% 22%, rgba(226,102,31,.16), transparent 64%),
    linear-gradient(96deg, rgba(8,13,18,.94) 0%, rgba(8,13,18,.88) 34%, rgba(8,13,18,.58) 62%, rgba(8,13,18,.34) 100%),
    linear-gradient(180deg, rgba(8,13,18,.62) 0%, rgba(8,13,18,.10) 26%, rgba(8,13,18,.10) 58%, rgba(8,13,18,.72) 86%, rgba(8,13,18,.88) 100%);
}
.hero__grid{display:grid;gap:clamp(38px,5vw,64px);align-items:start}
.hero__badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px 7px 8px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  font-size:.775rem;font-weight:600;letter-spacing:.02em;color:var(--steel-200);
  margin-bottom:24px;backdrop-filter:blur(4px);
}
.hero__badge .dot{
  width:8px;height:8px;border-radius:50%;background:#4ade80;flex:none;
  box-shadow:0 0 0 4px rgba(74,222,128,.16);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(74,222,128,.14)}50%{box-shadow:0 0 0 6px rgba(74,222,128,.06)}}

.hero h1{
  font-size:clamp(2.05rem,5.2vw,3.85rem);
  line-height:1.05;letter-spacing:-.035em;font-weight:750;
  margin-bottom:22px;
  text-wrap:balance;
}
.hero h1 .hl{
  color:var(--molten-2);
  background:linear-gradient(100deg,var(--molten-2),#ffb27a 70%);
  -webkit-background-clip:text;background-clip:text;
}
.hero__lede{font-size:clamp(1rem,1.55vw,1.18rem);line-height:1.68;color:#c9d6de;max-width:60ch;margin-bottom:30px}
.hero__cta{margin-bottom:34px}
.hero__note{display:flex;align-items:center;gap:9px;font-size:.85rem;color:var(--steel-400);margin-top:18px}

.hero__card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);
  padding:26px 26px 24px;
  backdrop-filter:blur(12px);
  box-shadow:0 30px 70px rgba(0,0,0,.35);
  max-width:420px;width:100%;justify-self:end;
}
.hero__card h2{font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:#9db0bc;font-weight:700;margin-bottom:18px}
.hero__card ul{display:grid;gap:15px}
.hero__card li{display:flex;gap:13px;align-items:flex-start;font-size:.925rem;color:#dfe8ee;line-height:1.5}
.hero__card .num{
  flex:none;width:24px;height:24px;border-radius:7px;
  background:rgba(226,102,31,.16);border:1px solid rgba(226,102,31,.34);
  color:var(--molten-2);font-size:.74rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);
}
.hero__card hr{border:0;border-top:1px solid rgba(255,255,255,.12);margin:22px 0 18px}
.hero__card .meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.79rem;color:var(--steel-400)}
.hero__card .meta b{color:#fff;font-weight:650}

.proof{
  border-top:1px solid var(--line-dark);
  margin-top:clamp(44px,6vw,72px);padding-top:26px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px 28px;
}
.proof div{min-width:0}
.proof dt{font-family:var(--font-mono);font-size:.685rem;letter-spacing:.13em;text-transform:uppercase;color:#9db0bc;margin-bottom:6px}
.proof dd{margin:0;font-size:.9rem;font-weight:600;color:#e7eef2;line-height:1.4}

.grid-3{display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.grid-2{display:grid;gap:18px;grid-template-columns:repeat(2,1fr)}

.card{
  position:relative;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--steel-200)}
.card__icon{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:var(--molten-soft);color:var(--molten);margin-bottom:16px}
.card h3{font-size:1.04rem;margin-bottom:9px;letter-spacing:-.012em}
.card p{font-size:.93rem;color:var(--steel-500);line-height:1.62}
.card ul{margin-top:14px;display:grid;gap:6px}
.card ul li{position:relative;padding-left:19px;font-size:.87rem;color:var(--steel-600);line-height:1.55}
.card ul li::before{content:"";position:absolute;left:2px;top:.55em;width:6px;height:6px;border-radius:2px;background:var(--molten);opacity:.55}

.process{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;gap:0;counter-reset:step}
.step{position:relative;display:grid;grid-template-columns:64px 1fr;gap:22px;padding:0 0 34px}
.step:last-child{padding-bottom:0}
.step__mark{position:relative;display:flex;justify-content:center}
.step__mark::before{
  content:counter(step);counter-increment:step;
  width:46px;height:46px;border-radius:14px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;font-family:var(--font-mono);font-size:.9rem;font-weight:700;
  box-shadow:0 6px 16px rgba(11,17,23,.16);
  z-index:1;
}
.step:not(:last-child) .step__mark::after{content:"";position:absolute;top:52px;bottom:-34px;width:2px;background:linear-gradient(180deg,var(--steel-200),rgba(226,102,31,.35))}
.step__body{padding-top:8px}
.step__body h3{font-size:1.06rem;margin-bottom:7px}
.step__body p{font-size:.94rem;color:var(--steel-500);max-width:70ch;line-height:1.65}
.step__tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.tag{font-size:.745rem;font-weight:600;letter-spacing:.02em;padding:4px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--steel-600)}
.tag--accent{background:var(--molten-soft);border-color:#f6d8c3;color:#b04a14}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.ts-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--steel-900);border:1px solid var(--steel-700);box-shadow:var(--shadow-lg)}
.ts-visual svg{width:100%;height:auto}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:28px}
.stat{background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.stat b{display:block;font-size:1.5rem;letter-spacing:-.03em;line-height:1.1;color:var(--ink);margin-bottom:5px}
.stat span{font-size:.79rem;color:var(--steel-500);line-height:1.4;display:block}
.stat__note{font-size:.7rem;color:var(--steel-500);display:block;margin-top:5px}

.checklist{display:grid;gap:13px;margin-top:6px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:.95rem;color:var(--steel-600);line-height:1.6}
.checklist .tick{flex:none;width:21px;height:21px;border-radius:50%;margin-top:2px;background:#e8f5ee;color:var(--ok);display:flex;align-items:center;justify-content:center}
.checklist b{color:var(--ink);font-weight:650}

.products{background:var(--ink);color:#fff}
.products .lead{color:var(--steel-400)}
.products .section-head .h2{color:#fff}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.prod{background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:24px 22px;transition:background .2s,border-color .2s,transform .2s}
.prod:hover{background:rgba(255,255,255,.06);border-color:rgba(226,102,31,.45);transform:translateY(-3px)}
.prod__icon{width:38px;height:38px;color:var(--molten-2);margin-bottom:15px}
.prod h3{font-size:1rem;margin-bottom:8px;color:#fff}
.prod p{font-size:.875rem;color:var(--steel-400);line-height:1.6}
.prod__spec{margin-top:14px;padding-top:13px;border-top:1px solid rgba(255,255,255,.09);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.03em;color:#8fa3ae}

.deliver{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(32px,5vw,60px);align-items:center}
.report{position:relative;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-md);padding:22px;overflow:hidden}
.report::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--molten),var(--molten-2))}
.report__head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:18px}
.report__logo{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--steel-500)}
.report__stamp{font-family:var(--font-mono);font-size:.63rem;letter-spacing:.08em;border:1px solid var(--line);border-radius:5px;padding:4px 7px;color:var(--steel-500)}
.report__title{font-size:1.02rem;margin-bottom:4px;margin-top:10px}
.report__sub{font-size:.79rem;color:var(--steel-500);margin-bottom:18px}
.report__rows{display:grid;gap:9px;margin-bottom:18px}
.report__row{display:flex;justify-content:space-between;gap:12px;font-size:.8rem;padding-bottom:9px;border-bottom:1px dashed var(--line)}
.report__row span:first-child{color:var(--steel-600)}
.report__row span:last-child{font-weight:600;color:var(--ink);text-align:right}
.report__score{display:flex;align-items:center;gap:12px;margin-top:4px}
.report__score .bar{flex:1;height:7px;border-radius:4px;background:var(--paper-2);overflow:hidden}
.report__score .bar i{display:block;height:100%;width:78%;border-radius:4px;background:linear-gradient(90deg,var(--molten),var(--molten-2))}
.report__score em{font-style:normal;font-size:.76rem;font-weight:700;color:var(--molten)}
.report__blur{margin-top:16px;font-size:.73rem;color:var(--steel-500);border-top:1px solid var(--line);padding-top:12px;line-height:1.5}

.deliv-list{display:grid;gap:16px}
.deliv-list li{display:grid;grid-template-columns:38px 1fr;gap:15px;align-items:start}
.deliv-list .di{width:38px;height:38px;border-radius:10px;flex:none;background:var(--paper-2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--steel-700)}
.deliv-list .deliv-h{font-size:.97rem;margin-bottom:4px;letter-spacing:-.012em}
.deliv-list p{font-size:.89rem;color:var(--steel-600);line-height:1.6}

.aud{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.aud-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 20px}
.aud-card .flag{font-size:.7rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:var(--molten);margin-bottom:10px;display:block}
.aud-card h3{font-size:.97rem;margin-bottom:7px}
.aud-card p{font-size:.855rem;color:var(--steel-500);line-height:1.58}
.aud__foot{margin-top:22px;font-size:.9rem;color:var(--steel-500);display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}

.bound{background:#fff}
.bound__panel{border:1px solid #eddcc9;background:linear-gradient(180deg,#fffaf5,#fffdfb);border-radius:var(--radius-lg);padding:clamp(24px,3.4vw,40px);position:relative;overflow:hidden}
.bound__panel::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--molten),var(--molten-2))}
.bound__panel h2{font-size:clamp(1.4rem,2.5vw,1.95rem);margin-bottom:14px}
.bound__panel > p{font-size:.97rem;color:var(--steel-600);max-width:74ch;line-height:1.7}
.bound__cols{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:28px}
.bound__col h3{font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel-500);margin-bottom:14px;font-weight:700}
.bound__col ul{display:grid;gap:11px}
.bound__col li{display:flex;gap:10px;font-size:.9rem;line-height:1.55;color:var(--steel-600);align-items:flex-start}
.bound__col li svg{flex:none;margin-top:3px}
.bound__col--yes li svg{color:var(--ok)}
.bound__col--no li svg{color:#b4562a}
.disclaimer{margin-top:28px;padding-top:22px;border-top:1px solid #eddcc9;font-size:.845rem;color:var(--steel-500);line-height:1.7}
.disclaimer strong{color:var(--ink);font-weight:650}

.faq{display:grid;gap:10px;max-width:900px}
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;padding:0 20px;transition:border-color .18s,box-shadow .18s}
.faq details[open]{border-color:var(--steel-200);box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;list-style:none;padding:17px 0;font-size:.98rem;font-weight:650;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:10px;height:10px;border-right:2px solid var(--steel-400);border-bottom:2px solid var(--steel-400);transform:rotate(45deg);transition:transform .2s;margin-right:3px}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq p{font-size:.91rem;color:var(--steel-500);padding:0 0 19px;max-width:72ch;line-height:1.65}

.contact{position:relative;isolation:isolate;overflow:hidden;background:var(--steel-900);color:#fff;padding:clamp(56px,7vw,96px) 0}
.contact::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(760px 420px at 82% 12%, rgba(226,102,31,.22), transparent 60%),radial-gradient(560px 340px at 8% 96%, rgba(43,90,120,.36), transparent 62%)}
.contact__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,60px);align-items:center}
.contact h2{font-size:clamp(1.7rem,3.4vw,2.6rem);margin-bottom:16px;letter-spacing:-.03em}
.contact p{color:var(--steel-400);max-width:52ch;font-size:1rem;line-height:1.7}
.contact__methods{display:grid;gap:12px;margin-top:6px}
.cm{display:flex;align-items:center;gap:15px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);border-radius:14px;padding:16px 18px;text-decoration:none;color:#fff;transition:background .18s,border-color .18s,transform .18s}
.cm:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3);transform:translateY(-2px)}
.cm__ic{flex:none;width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:rgba(226,102,31,.16);border:1px solid rgba(226,102,31,.3);color:var(--molten-2)}
.cm__txt{display:flex;flex-direction:column;min-width:0;line-height:1.35}
.cm__txt small{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:#9db0bc;margin-bottom:3px}
.cm--light{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.cm--light:hover{background:#fff;border-color:var(--steel-200)}
.cm--light .cm__txt small{color:var(--steel-600)}
.cm--light .cm__go{color:var(--steel-500)}
.cm--light:hover .cm__go{color:var(--molten-ink)}
.cm__txt b{font-size:.96rem;font-weight:650;overflow-wrap:anywhere}
.cm__go{margin-left:auto;color:var(--steel-400);flex:none;transition:transform .18s,color .18s}
.cm:hover .cm__go{color:#fff;transform:translateX(3px)}
.contact__fine{margin-top:20px;font-size:.82rem;color:#9db0bc;line-height:1.6}

.footer{background:#080d12;color:var(--steel-500);padding:38px 0 26px;font-size:.83rem;border-top:1px solid rgba(255,255,255,.07)}
.footer__top{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}
.footer__brand{max-width:340px}
.footer__brand .brand{margin-bottom:12px}
.footer__brand p{line-height:1.6;color:var(--steel-400)}
.footer__links{display:flex;flex-wrap:wrap;gap:0 22px}
.footer__links a{text-decoration:none;color:var(--steel-400);font-size:.83rem;display:inline-flex;align-items:center;min-height:44px;padding-inline:3px;min-width:44px;justify-content:center}
.footer__links a:hover{color:#fff}
.footer__legal a{display:inline;} .footer__legal{margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;font-size:.755rem;color:#6b828f;line-height:1.6}

.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;background:rgba(11,17,23,.97);border-top:1px solid rgba(255,255,255,.12);padding:10px 14px calc(10px + env(safe-area-inset-bottom));gap:10px;backdrop-filter:blur(12px)}
.mbar .btn{flex:1;padding:12px 14px;font-size:.87rem}

/* Progressive enhancement: content is visible by default (works without JS and for crawlers),
   the fade-in only applies once the script has confirmed IntersectionObserver support. */
.reveal{opacity:1;transform:none}
.js-reveal .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js-reveal .reveal.is-in{opacity:1;transform:none}
/* Never defer above-the-fold content: keeps LCP and first paint fast. */
.js-reveal .phero .reveal,
.js-reveal .section-head.reveal:first-child{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}

@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr}
  .hero__card{justify-self:start;max-width:520px}
  .proof{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .aud-grid{grid-template-columns:repeat(2,1fr)}
  .split,.deliver,.contact__grid{grid-template-columns:1fr}
  .deliver .report{order:-1}
  .ts-visual{order:-1}
}

@media (max-width:860px){
  .nav{position:absolute;top:var(--header-h);left:0;right:0;background:rgba(11,17,23,.985);border-bottom:1px solid rgba(255,255,255,.1);flex-direction:column;align-items:stretch;gap:0;padding:8px 22px 18px;display:none;box-shadow:0 22px 40px rgba(0,0,0,.4)}
  .nav.is-open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.07);font-size:.95rem}
  .nav .btn{margin-top:14px;justify-content:center}
  .nav-toggle{display:flex}
  .header .header__cta{display:none}
  .mbar{display:flex}
  body{padding-bottom:calc(88px + env(safe-area-inset-bottom))}
  .section{padding:52px 0}
}

@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding-inline:18px}
  .grid-3,.grid-2,.prod-grid,.aud-grid,.stats,.bound__cols{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr 1fr;gap:16px}
  .hero{padding-top:44px}
  .hero__card{padding:22px 20px}
  .btn-row .btn{width:100%}
  .hero__cta .btn{width:100%}
  .step{grid-template-columns:46px 1fr;gap:16px}
  .step__mark::before{width:38px;height:38px;border-radius:11px;font-size:.8rem}
  .step:not(:last-child) .step__mark::after{top:44px}
  .footer__top{flex-direction:column}
}

@media (max-width:400px){
  .proof{grid-template-columns:1fr}
  .cm{padding:14px}
}

@media print{
  .header,.mbar,.hero__bg,.hero__scrim,.contact::before{display:none !important}
  body{color:#000}
  .hero,.products,.contact{background:#fff !important;color:#000 !important}
}
/* ---------- Hero capability strip ---------- */
.hero__strip{
  margin-top:clamp(34px,4vw,54px);
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(10px);
  overflow:hidden;
}
.hero__strip > div{padding:24px 22px;border-right:1px solid rgba(255,255,255,.09)}
.hero__strip > div:last-child{border-right:0}
.hero__strip .hero__strip__t{
  font-size:.7rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--molten-2);font-weight:700;margin-bottom:9px;line-height:1.3;
}
.hero__strip p{font-size:.895rem;color:#c9d6de;line-height:1.55}

@media (max-width:1024px){
  .hero__strip{grid-template-columns:repeat(2,1fr)}
  .hero__strip > div:nth-child(2){border-right:0}
  .hero__strip > div:nth-child(1),.hero__strip > div:nth-child(2){border-bottom:1px solid rgba(255,255,255,.09)}
}
@media (max-width:600px){
  .hero__strip{grid-template-columns:1fr}
  .hero__strip > div{border-right:0;border-bottom:1px solid rgba(255,255,255,.09);padding:19px 20px}
  .hero__strip > div:last-child{border-bottom:0}
}
/* ==========================================================================
   Inner pages: breadcrumbs, page hero, article layout, tables, related links
   ========================================================================== */

.crumbs{
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
  font-size:.79rem;
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:0 8px;padding:11px 0;color:var(--steel-500)}
.crumbs li{display:flex;align-items:center;gap:8px;min-width:0}
.crumbs li+li::before{content:"/";color:var(--steel-200)}
.crumbs a{color:var(--steel-500);text-decoration:none;white-space:nowrap}
.crumbs a:hover{color:var(--molten-ink);text-decoration:underline;text-underline-offset:2px}
.crumbs [aria-current]{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.phero{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--steel-900);color:#fff;
  padding:clamp(38px,5.5vw,72px) 0 clamp(34px,4.5vw,58px);
}
.phero__bg{position:absolute;inset:0;z-index:-2;background-image:url("../../img/hero-coils.svg");background-size:cover;background-position:center 45%}
.phero__scrim{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(760px 420px at 82% 20%, rgba(198,83,18,.20), transparent 64%),
    linear-gradient(96deg, rgba(8,13,18,.95) 0%, rgba(8,13,18,.90) 46%, rgba(8,13,18,.66) 78%, rgba(8,13,18,.42) 100%);
}
.phero h1{font-size:clamp(1.75rem,3.9vw,2.85rem);line-height:1.1;letter-spacing:-.03em;max-width:24ch;text-wrap:balance}
.phero .lead{color:#c3d1da;margin-top:18px;max-width:62ch;font-size:clamp(.98rem,1.3vw,1.08rem)}
.phero .btn-row{margin-top:26px}
.phero__meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:22px;font-size:.8rem;color:#8fa3ae}
.phero__meta span{display:inline-flex;align-items:center;gap:7px}
.phero__meta svg{color:var(--molten-2);flex:none}

.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 318px;
  gap:clamp(28px,4vw,56px);align-items:start;
}
.layout__main{min-width:0}

.prose{font-size:1rem;line-height:1.72;color:var(--steel-600)}
.prose > * + *{margin-top:16px}
.prose h2{
  font-size:clamp(1.3rem,2.2vw,1.7rem);letter-spacing:-.022em;color:var(--ink);
  margin-top:clamp(32px,4vw,44px);margin-bottom:0;line-height:1.2;
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.06rem;color:var(--ink);margin-top:26px;letter-spacing:-.012em}
.prose p{max-width:70ch}
.prose strong{color:var(--ink);font-weight:650}
.prose a{color:var(--molten-ink);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prose a:hover{text-decoration-thickness:2px}
.prose ul,.prose ol{display:grid;gap:9px;max-width:70ch;padding-left:0}
.prose ul > li{position:relative;padding-left:22px}
.prose ul > li::before{
  content:"";position:absolute;left:3px;top:.62em;width:6px;height:6px;border-radius:2px;
  background:var(--molten);opacity:.6;
}
.prose ol{counter-reset:ol}
.prose ol > li{position:relative;padding-left:30px;counter-increment:ol}
.prose ol > li::before{
  content:counter(ol);position:absolute;left:0;top:.12em;
  width:21px;height:21px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  background:var(--molten-soft);color:var(--molten-ink);font-size:.72rem;font-weight:700;font-family:var(--font-mono);
}
.prose blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--molten);
  background:var(--paper-2);border-radius:0 10px 10px 0;color:var(--steel-600);
}
.prose blockquote p{margin:0;max-width:none}

.panel{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);
  padding:22px 24px;margin:26px 0;
}
.panel > :first-child{margin-top:0}
.panel h3{margin-top:0;font-size:1rem}
.panel--accent{border-color:#efd7c4;background:linear-gradient(180deg,#fffaf5,#fffdfb)}
.panel--dark{background:var(--ink);border-color:var(--steel-700);color:#c9d6de}
.panel--dark h3{color:#fff}
.panel--dark a{color:var(--molten-2)}

/* spec table */
.spec{width:100%;border-collapse:collapse;margin:24px 0;font-size:.9rem}
.spec caption{
  caption-side:top;text-align:left;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--steel-500);font-weight:700;padding-bottom:10px;
}
.spec th,.spec td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec thead th{background:var(--paper-2);color:var(--ink);font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;font-weight:700;border-bottom:1px solid var(--steel-200)}
.spec tbody th{font-weight:650;color:var(--ink);width:38%}
.spec td{color:var(--steel-600)}
.spec tbody tr:last-child th,.spec tbody tr:last-child td{border-bottom:0}
.spec-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0;border:1px solid var(--line);border-radius:12px}
.spec-wrap .spec{margin:0;min-width:520px}
.spec-wrap .spec thead th:first-child{padding-left:14px}

/* aside */
.aside{position:sticky;top:calc(var(--header-h) + 20px);display:grid;gap:16px}
.side-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;background:#fff;
  box-shadow:var(--shadow-sm);
}
.side-card h2,.side-card h3{
  font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel-500);
  font-weight:700;margin-bottom:14px;
}
.side-card ul{display:grid;gap:10px;font-size:.875rem;color:var(--steel-600);line-height:1.5}
.side-card li{display:flex;gap:9px;align-items:flex-start}
.side-card li svg{flex:none;margin-top:3px;color:var(--ok)}
.side-card--cta{background:var(--ink);border-color:var(--steel-700);color:#c9d6de}
.side-card--cta h2,.side-card--cta h3{color:var(--molten-2)}
.side-card--cta p{font-size:.885rem;line-height:1.6;color:#c9d6de;margin-bottom:16px}
.side-card--cta .btn{width:100%;margin-bottom:9px}
.side-card--cta .btn:last-child{margin-bottom:0}
.side-links{display:grid;gap:2px;font-size:.885rem}
.side-links a{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:8px 0;text-decoration:none;color:var(--steel-600);border-bottom:1px solid var(--line);
}
.side-links li:last-child a{border-bottom:0}
.side-links a:hover{color:var(--molten-ink)}
.side-links a svg{flex:none;color:var(--steel-200);transition:transform .18s,color .18s}
.side-links a:hover svg{color:var(--molten);transform:translateX(2px)}

/* related */
.related{border-top:1px solid var(--line);background:var(--paper-2);padding:clamp(40px,5vw,62px) 0}
.related h2{font-size:1.15rem;margin-bottom:20px;letter-spacing:-.015em}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-card{
  display:block;text-decoration:none;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:20px;transition:transform .18s,box-shadow .18s,border-color .18s;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:var(--steel-200)}
.rel-card small{font-size:.68rem;letter-spacing:.11em;text-transform:uppercase;color:var(--molten-ink);font-weight:700;display:block;margin-bottom:8px}
.rel-card b{display:block;font-size:.96rem;color:var(--ink);line-height:1.35;margin-bottom:6px}
.rel-card span{font-size:.845rem;color:var(--steel-500);line-height:1.55;display:block}

/* CTA band */
.cta-band{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--steel-900);color:#fff;padding:clamp(44px,5.5vw,68px) 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(620px 320px at 84% 18%, rgba(198,83,18,.24), transparent 62%);
}
.cta-band__inner{display:grid;grid-template-columns:1.2fr auto;gap:28px;align-items:center}
.cta-band h2{font-size:clamp(1.35rem,2.6vw,1.95rem);letter-spacing:-.025em;margin-bottom:10px}
.cta-band p{color:#9fb2bd;font-size:.95rem;max-width:56ch;line-height:1.65}

/* footer sitemap */
.footer__nav{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;flex:1}
.footer__col h2{
  font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;color:#9db0bc;
  font-weight:700;margin:0 0 10px;
}
.footer__col ul{display:grid;gap:1px}
.footer__col a{
  display:block;padding:6px 0;font-size:.82rem;color:var(--steel-400);text-decoration:none;line-height:1.4;
}
.footer__col a:hover{color:#fff}
.footer__top{display:grid;grid-template-columns:minmax(240px,300px) 1fr;gap:clamp(24px,4vw,56px)}

@media (max-width:1100px){
  .layout{grid-template-columns:1fr}
  .aside{position:static;grid-template-columns:repeat(2,1fr);display:grid}
}
@media (max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band__inner{grid-template-columns:1fr}
}
@media (max-width:860px){
  .footer__top{grid-template-columns:1fr}
  .footer__nav{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .related-grid{grid-template-columns:1fr}
  .aside{grid-template-columns:1fr}
  .phero{padding-top:34px}
  .spec{font-size:.85rem}
  .crumbs{font-size:.74rem}
}
/* Responsive spec table: stacked cards on narrow screens */
@media (max-width:700px){
  .spec-wrap{overflow:visible;border:0;border-radius:0;margin:22px 0}
  .spec-wrap .spec{min-width:0;display:block;margin:0}
  .spec-wrap .spec caption{display:block;padding-bottom:12px}
  .spec-wrap .spec thead{display:none}
  .spec-wrap .spec tbody,
  .spec-wrap .spec tr,
  .spec-wrap .spec th,
  .spec-wrap .spec td{display:block;width:auto}
  .spec-wrap .spec tr{
    border:1px solid var(--line);border-radius:12px;background:#fff;
    padding:14px 16px;margin-bottom:10px;
  }
  .spec-wrap .spec tr:last-child{margin-bottom:0}
  .spec-wrap .spec tbody th{
    width:auto;border:0;padding:0 0 6px;font-size:.95rem;letter-spacing:-.01em;
  }
  .spec-wrap .spec td{
    border:0;padding:0 0 10px;font-size:.875rem;line-height:1.55;
  }
  .spec-wrap .spec td:last-child{padding-bottom:0;color:var(--steel-500);font-size:.82rem}
  .spec-wrap .spec td:last-child::before{
    content:"Confirmed by: ";font-weight:650;color:var(--steel-600);
  }
  .spec-wrap .spec td:nth-child(2)::before{
    content:"Why it matters: ";font-weight:650;color:var(--steel-600);display:block;
  }
}