/* Skills (R)Evolution — standalone GitHub Pages design */
:root {
  --navy: #18202d;
  --navy-2: #222d3d;
  --blue: #2469a9;
  --blue-dark: #114d7c;
  --sky: #66a8c7;
  --teal: #3aa59d;
  --teal-dark: #176a68;
  --lime: #b9dd8a;
  --ink: #202936;
  --muted: #5d6a78;
  --paper: #ffffff;
  --bg: #f2f6f8;
  --soft-blue: #eaf4fb;
  --soft-teal: #e8f6f3;
  --line: #d9e3e8;
  --line-strong: #b9c9d1;
  --shadow: 0 20px 60px rgba(24, 32, 45, .12);
  --shadow-sm: 0 9px 28px rgba(24, 32, 45, .08);
  --radius: 20px;
  --radius-lg: 30px;
  --max: 1180px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg, video { max-width: 100%; height: auto; }
a { color: var(--blue-dark); text-decoration-thickness: .09em; text-underline-offset: .17em; }
a:hover { color: var(--teal-dark); }
button, input, textarea, select { font: inherit; }
:where(a, button, input, textarea, select):focus-visible {
  outline: 3px solid rgba(36, 105, 169, .35);
  outline-offset: 4px;
}

.sr-container { width: min(calc(100% - 42px), var(--max)); margin-inline: auto; }
.sr-page { overflow: clip; background: var(--bg); }
.sr-page [id] { scroll-margin-top: 92px; }
.sr-page h1, .sr-page h2, .sr-page h3, .sr-page h4 {
  margin-top: 0;
  color: var(--navy);
  font-weight: 850;
  line-height: 1.08;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.sr-page h1 { font-size: clamp(3rem, 7vw, 6.3rem); }
.sr-page h2 { font-size: clamp(2.05rem, 4vw, 3.65rem); }
.sr-page h3 { font-size: clamp(1.22rem, 2vw, 1.58rem); letter-spacing: -.02em; }
.sr-page p, .sr-page li { color: var(--muted); }
.sr-prose { max-width: 72ch; }
.sr-lead { max-width: 800px; font-size: clamp(1.12rem, 1.8vw, 1.38rem); line-height: 1.52; }

/* Header */
.sr-site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  border-bottom: 1px solid rgba(24, 32, 45, .08);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(16px);
}
.sr-site-header__inner {
  display: flex;
  min-height: 68px;
  align-items: center;
  gap: 20px;
}
.sr-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
  color: var(--navy);
  font-weight: 900;
  letter-spacing: -.02em;
  text-decoration: none;
}
.sr-brand:hover { color: var(--navy); }
.sr-brand__mark {
  position: relative;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  overflow: hidden;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 7px 20px rgba(36, 105, 169, .24);
  font-size: .82rem;
  font-weight: 950;
}
.sr-brand__mark::after {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.62);
  transform: rotate(45deg);
  content: "";
}
.sr-header-badge {
  flex: 0 0 auto;
  padding: 6px 10px;
  border: 1px solid #c9ddec;
  border-radius: 999px;
  color: var(--blue-dark);
  background: var(--soft-blue);
  font-size: .74rem;
  font-weight: 850;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.sr-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
  margin-left: auto;
}
.sr-nav a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 7px 10px;
  border-radius: 10px;
  color: var(--navy);
  font-size: .86rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
  transition: background .16s ease, color .16s ease, transform .16s ease;
}
.sr-nav a:hover, .sr-nav a[aria-current="page"] {
  color: var(--blue-dark);
  background: var(--soft-blue);
}
.sr-nav a:hover { transform: translateY(-1px); }
.sr-menu-toggle {
  display: none;
  margin-left: auto;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--navy);
  background: #fff;
  font-weight: 850;
  cursor: pointer;
}

/* Hero */
.sr-hero {
  position: relative;
  isolation: isolate;
  min-height: 690px;
  padding-block: clamp(76px, 10vw, 132px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 84% 16%, rgba(58,165,157,.28), transparent 24%),
    radial-gradient(circle at 72% 62%, rgba(36,105,169,.24), transparent 28%),
    linear-gradient(135deg, #fbfdfe 0%, #e8f1f5 60%, #dcebed 100%);
}
.sr-hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: .42;
  background-image:
    linear-gradient(rgba(36,105,169,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36,105,169,.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to right, transparent 0%, #000 55%);
  content: "";
}
.sr-hero::after {
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--blue), var(--sky), var(--teal), var(--lime));
  content: "";
}
.sr-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
  align-items: center;
  gap: clamp(52px, 8vw, 110px);
}
.sr-hero__content { position: relative; z-index: 2; }
.sr-hero__content h1 { max-width: 880px; margin-bottom: 22px; }
.sr-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.sr-hero__meta li {
  padding: 8px 12px;
  border: 1px solid rgba(17,77,124,.14);
  border-radius: 999px;
  color: var(--navy);
  background: rgba(255,255,255,.74);
  box-shadow: 0 3px 14px rgba(24,32,45,.04);
  font-size: .91rem;
  font-weight: 820;
}
.sr-hero__art { position: relative; min-height: 430px; }
.sr-hero__art::before {
  position: absolute;
  z-index: 3;
  top: 48%;
  left: 48%;
  color: #fff;
  content: "2027";
  font-size: clamp(4.5rem, 8vw, 8rem);
  font-weight: 950;
  line-height: .8;
  letter-spacing: -.08em;
  text-shadow: 0 6px 24px rgba(24,32,45,.16);
  transform: translate(-50%, -50%) rotate(-6deg);
}
.sr-hex {
  position: absolute;
  display: block;
  width: 205px;
  aspect-ratio: 1 / 1.13;
  border-radius: 18px;
  clip-path: polygon(25% 0,75% 0,100% 25%,100% 75%,75% 100%,25% 100%,0 75%,0 25%);
  box-shadow: var(--shadow);
}
.sr-hex--navy { top: 18px; right: 20px; background: var(--navy); transform: rotate(8deg); }
.sr-hex--blue { right: 138px; bottom: 0; background: linear-gradient(145deg, var(--blue), var(--sky)); transform: rotate(-8deg); }
.sr-hex--teal { right: -50px; bottom: 10px; background: linear-gradient(145deg, var(--teal), #70c8ba); transform: rotate(8deg); }
.sr-hex--ghost { top: 36px; right: 218px; background: rgba(255,255,255,.66); box-shadow: inset 0 0 0 1px rgba(36,105,169,.1); transform: rotate(-7deg); }

/* Shared components */
.sr-section { padding-block: clamp(70px, 8vw, 112px); }
.sr-section--white { background: var(--paper); }
.sr-section--soft { background: linear-gradient(180deg, #f5f8fa 0%, #edf3f5 100%); }
.sr-section--navy { background: linear-gradient(145deg, var(--navy), #233448); }
.sr-section--navy h2, .sr-section--navy h3, .sr-section--navy p, .sr-section--navy li { color: #fff; }
.sr-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 17px;
  color: var(--blue-dark);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.sr-kicker::before { width: 30px; height: 4px; border-radius: 99px; background: linear-gradient(90deg,var(--blue),var(--teal)); content: ""; }
.sr-actions, .sr-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.sr-actions { margin-top: 28px; }
.sr-btn {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 13px 21px;
  border: 2px solid transparent;
  border-radius: 13px;
  font-weight: 880;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease;
}
.sr-btn:hover { transform: translateY(-2px); }
.sr-btn--primary, .sr-btn--teal { color: #fff !important; }
.sr-btn--primary { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); box-shadow: 0 10px 26px rgba(36,105,169,.25); }
.sr-btn--primary:hover { background: var(--navy); }
.sr-btn--teal { background: linear-gradient(135deg, var(--teal-dark), var(--teal)); box-shadow: 0 10px 26px rgba(23,106,104,.2); }
.sr-btn--teal:hover { background: var(--navy); }
.sr-btn--secondary { border-color: var(--line-strong); color: var(--navy); background: #fff; }
.sr-btn--secondary:hover { border-color: var(--blue); color: var(--blue-dark); background: var(--soft-blue); }
.sr-chip {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid #b8ddd8;
  border-radius: 999px;
  color: var(--teal-dark);
  background: var(--soft-teal);
  font-size: .82rem;
  font-weight: 850;
}
.sr-chip--blue { border-color: #c2d9eb; color: var(--blue-dark); background: var(--soft-blue); }

.sr-facts {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  margin-top: -46px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}
.sr-fact { padding: 26px 30px; }
.sr-fact + .sr-fact { border-left: 1px solid var(--line); }
.sr-fact__label { display: block; margin-bottom: 5px; color: var(--muted); font-size: .72rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.sr-fact__value { display: block; color: var(--navy); font-size: 1.15rem; font-weight: 880; line-height: 1.3; }

.sr-grid { display: grid; gap: 22px; }
.sr-grid--2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
.sr-grid--3 { grid-template-columns: repeat(3,minmax(0,1fr)); }
.sr-grid--4 { grid-template-columns: repeat(4,minmax(0,1fr)); }
.sr-card {
  position: relative;
  padding: 29px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 2px 0 rgba(24,32,45,.02);
}
.sr-card::after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg,var(--blue),var(--teal));
  opacity: 0;
  content: "";
  transition: opacity .16s ease;
}
.sr-card:hover { border-color: #b9d2df; box-shadow: var(--shadow-sm); }
.sr-card:hover::after { opacity: 1; }
.sr-card__number {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 14px;
  color: var(--blue-dark);
  background: linear-gradient(145deg,var(--soft-blue),var(--soft-teal));
  font-weight: 950;
}

.sr-editions { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.sr-edition {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: linear-gradient(155deg,#fff 60%,#eef6f8 100%);
  text-decoration: none;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.sr-edition:hover { transform: translateY(-5px); border-color: #afd0dc; color: var(--ink); box-shadow: var(--shadow-sm); }
.sr-edition__year { margin-bottom: 24px; color: var(--blue); font-size: clamp(2.8rem,4vw,4.5rem); font-weight: 950; line-height: .9; letter-spacing: -.07em; }
.sr-edition__city { margin-bottom: 7px; color: var(--navy); font-size: 1.16rem; font-weight: 880; }
.sr-edition__date { margin-bottom: 18px; color: var(--muted); font-size: .9rem; font-weight: 740; }
.sr-edition__link { margin-top: auto; color: var(--blue-dark); font-weight: 880; }

/* Archive pages */
.sr-archive-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(72px,8vw,108px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 92% 15%, rgba(58,165,157,.19), transparent 26%),
    linear-gradient(135deg,#fff 0%,#eef5f8 100%);
}
.sr-archive-hero::after {
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 360px;
  height: 360px;
  border: 40px solid rgba(36,105,169,.07);
  border-radius: 50%;
  content: "";
}
.sr-archive-hero__top { position: relative; z-index: 1; display: flex; align-items: flex-start; justify-content: space-between; gap: 34px; }
.sr-archive-year { flex: 0 0 auto; color: rgba(36,105,169,.15); font-size: clamp(5.1rem,13vw,10.5rem); font-weight: 950; line-height: .75; letter-spacing: -.09em; }
.sr-archive-note { margin-top: 28px; padding: 17px 19px; border-left: 5px solid var(--teal); border-radius: 0 12px 12px 0; background: rgba(232,246,243,.85); }

.sr-agenda { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.sr-agenda-day + .sr-agenda-day { border-top: 8px solid var(--bg); }
.sr-agenda-day__head { padding: 27px 31px; border-bottom: 1px solid var(--line); background: linear-gradient(90deg,var(--soft-blue),#fff 78%); }
.sr-agenda-day__head h3 { margin-bottom: 6px; }
.sr-agenda-day__head p { margin: 0; }
.sr-session { display: grid; grid-template-columns: 145px minmax(0,1fr); gap: 28px; padding: 26px 31px; }
.sr-session + .sr-session { border-top: 1px solid var(--line); }
.sr-session__time { color: var(--blue-dark); font-size: .94rem; font-weight: 900; font-variant-numeric: tabular-nums; }
.sr-session__title { margin: 0 0 8px; font-size: 1.08rem; line-height: 1.38; }
.sr-session__meta, .sr-session__people { margin-top: 0; color: var(--muted); font-size: .94rem; }
ul.sr-session__people { padding-left: 1.2rem; }
.sr-session--break { background: #f8fbfb; }
.sr-session--break .sr-session__title { color: var(--teal-dark); }

.sr-timeline { position: relative; display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.sr-timeline::before { position: absolute; top: 14px; bottom: 14px; left: 10px; width: 2px; background: var(--line); content: ""; }
.sr-timeline__item { position: relative; padding: 0 0 34px 48px; }
.sr-timeline__item::before { position: absolute; top: 7px; left: 2px; width: 18px; height: 18px; border: 4px solid #fff; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 2px var(--teal-dark); content: ""; }
.sr-timeline__item:last-child { padding-bottom: 0; }

/* Contact */
.sr-contact-layout { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); gap: 34px; align-items: start; }
.sr-form, .sr-contact-card { padding: clamp(25px,4vw,40px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.sr-form-row { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.sr-field { margin-bottom: 18px; }
.sr-form label { display: block; margin-bottom: 8px; color: var(--navy); font-size: .92rem; font-weight: 820; }
.sr-form input[type="text"], .sr-form input[type="email"], .sr-form textarea {
  width: 100%;
  min-height: 50px;
  padding: 13px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  color: var(--navy);
  background: #fff;
}
.sr-form textarea { min-height: 165px; resize: vertical; }
.sr-form input:focus, .sr-form textarea:focus { border-color: var(--blue); outline: 3px solid rgba(36,105,169,.15); outline-offset: 1px; }
.sr-required { color: #9a3341; font-weight: 900; }
.sr-form-help { margin-top: 6px; font-size: .84rem; }

/* CTA + footer */
.sr-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(38px,6vw,68px);
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    radial-gradient(circle at 90% 10%, rgba(58,165,157,.3), transparent 32%),
    linear-gradient(135deg,var(--navy),#263b52);
  box-shadow: var(--shadow);
}
.sr-cta::after { position: absolute; right: -54px; bottom: -70px; width: 250px; height: 250px; border: 32px solid rgba(255,255,255,.08); border-radius: 50%; content: ""; }
.sr-cta h2, .sr-cta h3, .sr-cta p { position: relative; z-index: 1; color: #fff; }
.sr-cta .sr-actions { position: relative; z-index: 1; }

.sr-footer { padding: 54px 0 30px; color: #dce5e9; background: var(--navy); }
.sr-footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 42px; }
.sr-footer h2, .sr-footer h3 { margin-bottom: 12px; color: #fff; font-size: 1rem; letter-spacing: -.01em; }
.sr-footer p, .sr-footer li { color: #dce5e9; font-size: .9rem; }
.sr-footer ul { margin: 0; padding: 0; list-style: none; }
.sr-footer a { color: #fff; }
.sr-footer__bottom { margin-top: 36px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.14); color: #b9c8d0; font-size: .8rem; }

.sr-skip-link { position: fixed; z-index: 9999; top: 12px; left: 12px; padding: 10px 14px; border-radius: 9px; color: #fff; background: var(--blue-dark); transform: translateY(-160%); }
.sr-skip-link:focus { transform: translateY(0); }

@media (max-width: 980px) {
  .sr-header-badge { display: none; }
  .sr-hero__grid { grid-template-columns: 1fr; }
  .sr-hero__art { display: none; }
  .sr-grid--4, .sr-editions { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sr-grid--3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sr-contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .sr-site-header__inner { flex-wrap: wrap; padding-block: 10px; }
  .sr-menu-toggle { display: inline-flex; }
  .sr-nav {
    display: none;
    width: 100%;
    flex-basis: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
    margin: 0;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }
  .sr-nav.is-open { display: flex; }
  .sr-nav a { flex: 1 1 auto; justify-content: center; }
}

@media (max-width: 700px) {
  body { font-size: 16.5px; }
  .sr-container { width: min(calc(100% - 28px),var(--max)); }
  .sr-hero { min-height: 0; padding-block: 70px 82px; }
  .sr-facts { grid-template-columns: 1fr; margin-top: -34px; }
  .sr-fact + .sr-fact { border-top: 1px solid var(--line); border-left: 0; }
  .sr-grid--2, .sr-grid--3, .sr-grid--4, .sr-editions, .sr-footer__grid, .sr-form-row { grid-template-columns: 1fr; }
  .sr-archive-hero__top { display: block; }
  .sr-archive-year { margin-top: 26px; }
  .sr-session { grid-template-columns: 1fr; gap: 7px; padding: 22px 20px; }
  .sr-agenda-day__head { padding: 22px 20px; }
  .sr-edition { min-height: 260px; }
  .sr-btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}