:root { --navy: #0b2b42; --navy-deep: #071d2d; --orange: #df6843; --ink: #133449; --muted: #647782; --line: #dbe5e9; --surface: #f2f6f7; --white: #fff; --shell: 1240px; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 95px; }
body { margin: 0; background: #fff; color: var(--ink); font-family: "Montserrat", "Segoe UI", sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.1; letter-spacing: -0.045em; }
.page-shell { width: min(var(--shell), calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: fixed; top: -70px; left: 16px; z-index: 100; padding: 12px 18px; background: var(--navy); color: #fff; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid #ef8a69; outline-offset: 4px; }
.section-label { margin-bottom: 15px; color: #bd4e2d; font-size: 10px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }

.iso-hero { position: relative; min-height: 560px; display: flex; align-items: center; overflow: hidden; background: linear-gradient(125deg, #061a2b 0%, #0a304b 62%, #124b70 100%); color: #fff; }
.iso-hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 55%, #df684312 0, transparent 42%); pointer-events: none; }
.iso-hero__pattern { position: absolute; left: 50%; top: 50%; width: 410px; height: 410px; border: 1px solid #ffffff12; border-radius: 50%; box-shadow: 0 0 0 75px #ffffff06, 0 0 0 150px #ffffff03; transform: translate(-50%, -43%); }
.iso-hero__pattern::before, .iso-hero__pattern::after { content: ""; position: absolute; border-radius: 50%; border: 1px solid #df684354; }
.iso-hero__pattern::before { inset: 130px; }
.iso-hero__pattern::after { inset: 240px; background: #df68431c; }
.iso-hero__content { position: relative; z-index: 2; max-width: 920px; padding-top: 82px; text-align: center; }
.breadcrumb { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 18px; color: #aec3cf; font-size: 9px; font-weight: 600; letter-spacing: 1.4px; text-transform: uppercase; }
.breadcrumb a:hover { color: #fff; }
.iso-hero__mark { width: 76px; height: 76px; display: grid; place-items: center; margin: 0 auto 16px; border: 1px solid #ffffff30; border-radius: 50%; background: #071d2dcc; color: #ff825d; font-size: 30px; box-shadow: 0 18px 42px #03111d45; }
.eyebrow { display: flex; align-items: center; justify-content: center; gap: 11px; margin-bottom: 14px; color: #ff8a67; font-size: 9px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.eyebrow span { width: 27px; height: 2px; background: var(--orange); }
.iso-hero h1 { max-width: 850px; margin: 0 auto 18px; font-size: clamp(42px, 4.8vw, 64px); font-weight: 400; letter-spacing: -0.06em; }
.iso-hero h1 strong { color: #ff825d; font-weight: 500; }
.iso-hero__intro { max-width: 690px; margin: 0 auto; color: #cfdee5; font-size: 13px; line-height: 1.85; }
.hero-button { min-height: 46px; display: inline-flex; align-items: center; gap: 12px; margin-top: 25px; padding: 0 18px; border-radius: 7px; background: var(--orange); color: #fff; font-size: 9px; font-weight: 700; text-transform: uppercase; transition: background 180ms ease, transform 180ms ease; }
.hero-button:hover { background: #c95432; transform: translateY(-2px); }

.iso-intro { padding: 78px 0 84px; overflow: hidden; }
.iso-intro__layout { display: block; }
.iso-intro__copy { max-width: 820px; margin: 0 auto 36px; text-align: center; }
.iso-intro__copy h2, .certificate-library__header h2 { margin-bottom: 19px; font-size: clamp(34px, 3.7vw, 50px); font-weight: 500; }
.iso-intro__copy h2 span, .certificate-library__header h2 span { color: var(--orange); }
.iso-intro__copy > p:not(.section-label) { max-width: 740px; margin-right: auto; margin-left: auto; color: var(--muted); font-size: 12.5px; line-height: 1.85; }
.iso-intro__benefits { max-width: 980px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-inline: auto; }
.iso-intro__benefits article { position: relative; min-height: 285px; padding: 27px 24px; border: 1px solid var(--line); background: var(--surface); text-align: center; }
.iso-intro__benefits article > span { position: absolute; top: 23px; right: 23px; color: #9eb0ba; font-size: 10px; font-weight: 700; }
.iso-intro__benefits i { width: 112px; height: 112px; display: grid; place-items: center; margin: 15px auto 22px; border-radius: 50%; background: #fff; color: var(--orange); font-size: 44px; box-shadow: 0 14px 34px #13344918; }
.iso-intro__benefits h3 { margin-bottom: 11px; font-size: 19px; font-weight: 600; }
.iso-intro__benefits p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.85; }

.certificate-library { padding: 78px 0 84px; background: #f2f6f7; color: var(--ink); }
.certificate-library .section-label { color: #bd4e2d; }
.certificate-library__header { max-width: 760px; margin: 0 auto 32px; padding-bottom: 25px; border-bottom: 1px solid var(--line); text-align: center; }
.certificate-library__header h2 { margin-bottom: 0; }
.certificate-library__header > p { max-width: 520px; margin: 12px auto 0; color: var(--muted); font-size: 12px; }
.certificate-grid { max-width: 1080px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 15px; margin-inline: auto; }
.certificate-card { min-width: 0; overflow: hidden; border: 1px solid #d7e1e6; border-radius: 14px; background: #fff; box-shadow: 0 16px 38px #12344912; transition: transform 230ms ease, box-shadow 230ms ease; }
.certificate-card:hover { transform: translateY(-7px); box-shadow: 0 24px 52px #12344920; }
.certificate-card > a { display: flex; height: 100%; flex-direction: column; }
.certificate-card__preview { height: 260px; display: grid; place-items: center; padding: 17px; overflow: hidden; background: #e9eef1; }
.certificate-card__preview img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 8px 15px #0c273829); transition: transform 350ms ease; }
.certificate-card:hover img { transform: scale(1.025); }
.certificate-card__content { min-height: 145px; display: flex; flex: 1; flex-direction: column; padding: 19px 18px; color: var(--ink); }
.certificate-card__content p { margin: 0 0 9px; color: #bc502f; font-size: 9px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }
.certificate-card__content h3 { margin: 0; font-size: 15px; font-weight: 600; line-height: 1.35; }
.certificate-card__content span { display: inline-flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 16px; color: #4f6674; font-size: 8px; font-weight: 700; letter-spacing: 0.8px; text-transform: uppercase; }
.certificate-card__content span i { color: var(--orange); }

.iso-cta { padding: 50px 0; background: var(--orange); color: #fff; }
.iso-cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 45px; }
.iso-cta .section-label { color: #fff; opacity: 0.82; }
.iso-cta h2 { max-width: 780px; margin: 0; font-size: clamp(31px, 3.5vw, 48px); font-weight: 500; }
.iso-cta a { min-height: 50px; display: inline-flex; flex-shrink: 0; align-items: center; gap: 12px; padding: 0 21px; border-radius: 7px; background: var(--navy); font-size: 10px; font-weight: 700; text-transform: uppercase; transition: background 180ms ease, transform 180ms ease; }
.iso-cta a:hover { background: var(--navy-deep); transform: translateY(-2px); }

.js [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 800ms ease, transform 850ms cubic-bezier(0.2, 0.7, 0.2, 1); }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (max-width: 1050px) { .certificate-grid { grid-template-columns: repeat(2, 1fr); } .certificate-card__preview { height: 330px; } }
@media (max-width: 850px) { .page-shell { width: calc(100% - 48px); } .iso-hero { min-height: 540px; } .iso-intro, .certificate-library { padding: 68px 0; } .iso-intro__benefits { grid-template-columns: 1fr; } .iso-intro__benefits article { min-height: 225px; } .iso-cta__inner { align-items: flex-start; flex-direction: column; } }
@media (max-width: 560px) { .page-shell { width: calc(100% - 36px); } .iso-hero { min-height: 520px; } .iso-hero__content { padding-top: 92px; } .iso-hero h1 { font-size: 39px; } .iso-hero__mark { width: 68px; height: 68px; font-size: 27px; } .certificate-grid { grid-template-columns: 1fr; } .certificate-card__preview { height: min(350px, 98vw); } .iso-cta a { width: 100%; justify-content: center; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }