:root {
  --vsf-purple: #3d0859;
  --vsf-magenta: #c71c81;
  --vsf-pink: #c978b1;
  --vsf-lavender: #bcbcd7;
  --vsf-green: #245908;
  --ink: #251b2b;
  --muted: #6e6674;
  --surface: #ffffff;
  --surface-soft: #faf8fc;
  --line: #e7e0eb;
  --code: #201628;
  --shadow: 0 18px 48px rgba(61, 8, 89, .10);
  --radius-lg: 24px;
  --radius-md: 16px;
  --header-height: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  font-family: "Segoe UI Light", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fff 0%, #fbf9fc 50%, #fff 100%);
  line-height: 1.65;
}
button, input { font: inherit; }
a { color: inherit; }
code, pre { font-family: "Cascadia Code", Consolas, monospace; }
code { color: var(--vsf-purple); font-weight: 600; }
kbd { border: 1px solid #cfc6d3; border-bottom-width: 3px; border-radius: 6px; padding: .1rem .42rem; background: #fff; font-family: inherit; }

.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; color: #fff; background: var(--vsf-purple); border-radius: 8px; }
.skip-link:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,.94); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(231,224,235,.9);
}
.brand-wrap { min-height: var(--header-height); max-width: 1500px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { text-decoration: none; display: inline-flex; align-items: center; gap: 13px; }
.brand-mark { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; color: #fff; font-weight: 800; letter-spacing: -.04em; background: linear-gradient(135deg, var(--vsf-purple), var(--vsf-magenta)); box-shadow: 0 8px 22px rgba(199,28,129,.25); }
.brand-copy { display: grid; line-height: 1.15; }
.brand-copy strong { color: var(--vsf-purple); font-family: "Segoe UI", Arial, sans-serif; font-size: .98rem; }
.brand-copy small { color: var(--muted); font-size: .73rem; margin-top: 4px; letter-spacing: .04em; text-transform: uppercase; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-button, .menu-button { border: 1px solid var(--line); background: #fff; color: var(--vsf-purple); border-radius: 10px; cursor: pointer; transition: .2s ease; }
.icon-button { width: 42px; height: 42px; font-size: 1.25rem; }
.icon-button:hover, .menu-button:hover { border-color: var(--vsf-pink); transform: translateY(-1px); }
.menu-button { display: none; width: 42px; height: 42px; padding: 10px; }
.menu-button span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: currentColor; border-radius: 2px; }
.search-panel { max-width: 1500px; margin: 0 auto; padding: 0 28px 18px; }
.search-panel label { display: block; color: var(--vsf-purple); font-weight: 700; margin-bottom: 6px; }
.search-row { display: flex; gap: 8px; }
.search-row input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 11px; padding: 12px 14px; outline: none; }
.search-row input:focus { border-color: var(--vsf-magenta); box-shadow: 0 0 0 4px rgba(199,28,129,.10); }
.search-row button { border: 0; border-radius: 11px; padding: 0 18px; color: #fff; background: var(--vsf-purple); cursor: pointer; }
.search-panel p { margin: 6px 0 0; color: var(--muted); font-size: .88rem; }
.reading-progress { position: fixed; top: var(--header-height); left: 0; right: 0; z-index: 1100; height: 3px; background: transparent; }
.reading-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--vsf-magenta), var(--vsf-purple)); }

.layout { max-width: 1500px; margin: 0 auto; display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 48px; padding: 38px 28px 80px; }
.side-nav { position: relative; }
.side-nav-inner { position: sticky; top: 112px; max-height: calc(100vh - 132px); overflow: auto; padding-right: 10px; }
.eyebrow { color: var(--vsf-magenta); font-family: "Segoe UI", Arial, sans-serif; font-weight: 800; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 12px; }
.side-nav nav { display: grid; border-left: 1px solid var(--line); }
.side-nav nav a { text-decoration: none; color: var(--muted); padding: 7px 0 7px 16px; font-size: .9rem; border-left: 3px solid transparent; margin-left: -2px; transition: .18s; }
.side-nav nav a:hover, .side-nav nav a.active { color: var(--vsf-purple); border-left-color: var(--vsf-magenta); font-family: "Segoe UI", Arial, sans-serif; font-weight: 650; }
.side-card { margin-top: 28px; padding: 18px; border-radius: var(--radius-md); color: #fff; background: linear-gradient(145deg, var(--vsf-purple), #591174); box-shadow: var(--shadow); display: grid; gap: 4px; }
.side-card span { color: var(--vsf-pink); text-transform: uppercase; letter-spacing: .1em; font-size: .7rem; }
.side-card small { opacity: .75; line-height: 1.4; }
main { min-width: 0; }

.hero { position: relative; overflow: hidden; display: grid; grid-template-columns: 1.5fr .65fr; gap: 30px; align-items: end; padding: clamp(30px, 5vw, 64px); border-radius: 30px; color: #fff; background: radial-gradient(circle at 90% 5%, rgba(199,28,129,.55), transparent 34%), linear-gradient(135deg, #2e053f 0%, var(--vsf-purple) 55%, #5e0e78 100%); box-shadow: 0 26px 70px rgba(61,8,89,.22); }
.hero::after { content: ""; position: absolute; width: 320px; height: 320px; right: -110px; bottom: -170px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; box-shadow: 0 0 0 42px rgba(255,255,255,.035), 0 0 0 86px rgba(255,255,255,.025); }
.hero .eyebrow { color: #f4a8d4; }
.hero h1 { margin: 0; font-family: "Segoe UI", Arial, sans-serif; font-size: clamp(2rem, 4.1vw, 4.15rem); line-height: 1.03; letter-spacing: -.045em; max-width: 970px; }
.hero-lead { max-width: 850px; margin: 24px 0 0; color: rgba(255,255,255,.82); font-size: clamp(1rem, 1.35vw, 1.2rem); }
.hero-meta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-meta span { padding: 7px 11px; border: 1px solid rgba(255,255,255,.20); background: rgba(255,255,255,.07); border-radius: 999px; font-size: .78rem; }
.hero-panel { position: relative; z-index: 2; display: grid; gap: 10px; }
.hero-panel div { display: grid; grid-template-columns: 56px 1fr; align-items: center; gap: 12px; padding: 15px; border: 1px solid rgba(255,255,255,.16); border-radius: 14px; background: rgba(255,255,255,.08); backdrop-filter: blur(8px); }
.hero-panel strong { font-size: 1.8rem; line-height: 1; color: #fff; }
.hero-panel span { color: rgba(255,255,255,.72); font-size: .83rem; line-height: 1.25; }

.content-card, .step-card { margin-top: 28px; padding: clamp(24px, 4vw, 44px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: 0 12px 34px rgba(61,8,89,.055); }
.source-request { border-left: 6px solid var(--vsf-magenta); }
.section-heading { margin-bottom: 22px; }
.section-number { display: block; color: var(--vsf-magenta); font-family: "Segoe UI", Arial, sans-serif; font-weight: 800; font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; }
.section-heading h2, .step-header h2 { margin: 4px 0 0; color: var(--vsf-purple); font-family: "Segoe UI", Arial, sans-serif; letter-spacing: -.025em; line-height: 1.2; }
.section-heading h2 { font-size: clamp(1.55rem, 2.4vw, 2.35rem); }
blockquote { margin: 0; padding: 24px 26px; border-radius: 0 14px 14px 0; background: var(--surface-soft); color: #4b3f50; font-size: 1.02rem; }
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 26px 0; }
.comparison-grid article { padding: 22px; border-radius: var(--radius-md); background: var(--surface-soft); border: 1px solid var(--line); }
.comparison-grid h3 { margin: 0 0 10px; color: var(--vsf-purple); font-size: 1.02rem; }
ul, ol { padding-left: 1.3rem; }
li + li { margin-top: 7px; }

.step-card { position: relative; }
.step-header { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: start; padding-bottom: 23px; margin-bottom: 23px; border-bottom: 1px solid var(--line); }
.step-badge { display: inline-grid; place-items: center; min-width: 70px; height: 38px; padding: 0 12px; border-radius: 999px; color: #fff; background: linear-gradient(135deg, var(--vsf-magenta), var(--vsf-purple)); font-family: "Segoe UI", Arial, sans-serif; font-weight: 800; font-size: .78rem; }
.step-header h2 { font-size: clamp(1.35rem, 2.2vw, 1.9rem); }
.step-header p { margin: 7px 0 0; color: var(--muted); }
.step-check { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: .82rem; white-space: nowrap; cursor: pointer; }
.step-check input, .final-checklist input { accent-color: var(--vsf-magenta); width: 18px; height: 18px; }
.step-card.is-complete { border-color: rgba(36,89,8,.35); box-shadow: 0 12px 34px rgba(36,89,8,.08); }
.step-card.is-complete .step-badge { background: var(--vsf-green); }

.code-block { margin: 18px 0; overflow: hidden; border-radius: 14px; background: var(--code); box-shadow: 0 10px 24px rgba(32,22,40,.15); }
.code-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,.08); color: #cabbd1; font-size: .76rem; }
.copy-button { border: 1px solid rgba(255,255,255,.15); border-radius: 7px; padding: 5px 9px; color: #fff; background: rgba(255,255,255,.07); cursor: pointer; font-size: .72rem; }
.copy-button:hover { background: rgba(255,255,255,.14); }
pre { margin: 0; padding: 18px; overflow-x: auto; color: #f4edf7; font-size: .88rem; line-height: 1.65; tab-size: 2; }
pre code { color: inherit; font-weight: 400; }
.notice { margin: 20px 0; padding: 15px 17px; border-radius: 12px; border-left: 4px solid; }
.notice-info { background: #f5eff9; border-color: var(--vsf-purple); }
.notice-warning { background: #fff4fa; border-color: var(--vsf-magenta); }
.validation { display: flex; gap: 13px; align-items: flex-start; margin-top: 24px; padding: 17px; border-radius: 13px; background: #f3f8f0; border: 1px solid #dce9d5; }
.validation > span { display: grid; place-items: center; flex: 0 0 27px; height: 27px; border-radius: 50%; color: #fff; background: var(--vsf-green); font-weight: 900; }
.validation strong { color: var(--vsf-green); }
.validation p { margin: 2px 0 0; color: #4f6146; }
.result-list { display: grid; gap: 6px; padding: 0; list-style: none; }
.result-list li { padding: 10px 13px; border-radius: 9px; background: var(--surface-soft); border: 1px solid var(--line); }

.final-checklist { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.final-checklist label { display: flex; align-items: flex-start; gap: 10px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-soft); cursor: pointer; }
.completion-box { margin-top: 20px; display: flex; align-items: center; gap: 18px; padding: 20px; border-radius: var(--radius-md); color: #fff; background: linear-gradient(135deg, var(--vsf-purple), #5e0e78); }
.completion-box > span { font-family: "Segoe UI", Arial, sans-serif; font-weight: 800; font-size: 2.2rem; }
.completion-box p { margin: 2px 0 0; opacity: .78; }

.accordion details { border: 1px solid var(--line); border-radius: 12px; background: #fff; overflow: hidden; }
.accordion details + details { margin-top: 10px; }
.accordion summary { display: flex; justify-content: space-between; gap: 20px; padding: 17px 18px; color: var(--vsf-purple); font-family: "Segoe UI", Arial, sans-serif; font-weight: 700; cursor: pointer; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion details[open] summary { background: var(--surface-soft); border-bottom: 1px solid var(--line); }
.accordion details > div { padding: 4px 18px 18px; }

.next-step { margin-top: 28px; padding: clamp(30px, 5vw, 58px); border-radius: var(--radius-lg); text-align: center; color: #fff; background: linear-gradient(135deg, var(--vsf-magenta), var(--vsf-purple)); }
.next-step .eyebrow { color: rgba(255,255,255,.72); }
.next-step h2 { margin: 0 auto 25px; max-width: 850px; font-family: "Segoe UI", Arial, sans-serif; line-height: 1.25; }
.primary-button { display: inline-flex; padding: 12px 19px; border-radius: 10px; background: #fff; color: var(--vsf-purple); text-decoration: none; font-weight: 700; }
footer { border-top: 1px solid var(--line); padding: 28px max(28px, calc((100vw - 1444px)/2)); display: flex; justify-content: space-between; gap: 30px; color: var(--muted); background: #fff; }
footer div { display: grid; }
footer strong { color: var(--vsf-purple); }
footer p { margin: 0; }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 2000; transform: translateY(20px); opacity: 0; pointer-events: none; padding: 11px 15px; border-radius: 10px; color: #fff; background: var(--vsf-purple); box-shadow: var(--shadow); transition: .2s ease; }
.toast.show { opacity: 1; transform: translateY(0); }
.search-hidden { display: none !important; }
mark.search-hit { background: #ffe2f1; color: var(--ink); border-radius: 3px; padding: 0 2px; }

@media (max-width: 1050px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .menu-button { display: block; }
  .side-nav { position: fixed; z-index: 900; top: var(--header-height); left: 0; bottom: 0; width: min(340px, 88vw); transform: translateX(-105%); transition: .25s ease; background: #fff; border-right: 1px solid var(--line); box-shadow: 18px 0 48px rgba(61,8,89,.12); }
  .side-nav.open { transform: translateX(0); }
  .side-nav-inner { position: static; max-height: 100%; padding: 28px; }
}
@media (max-width: 760px) {
  :root { --header-height: 70px; }
  .brand-wrap { padding: 0 16px; }
  .brand-copy small { display: none; }
  .layout { padding: 22px 14px 60px; }
  .hero { grid-template-columns: 1fr; padding: 30px 24px; border-radius: 22px; }
  .hero-panel { grid-template-columns: repeat(3, 1fr); }
  .hero-panel div { grid-template-columns: 1fr; text-align: center; gap: 5px; padding: 12px 8px; }
  .hero-panel span { font-size: .7rem; }
  .content-card, .step-card { padding: 24px 19px; border-radius: 18px; }
  .step-header { grid-template-columns: 1fr; }
  .step-check { justify-self: start; }
  .comparison-grid, .final-checklist { grid-template-columns: 1fr; }
  pre { font-size: .79rem; }
  footer { padding: 24px 18px; flex-direction: column; }
}
@media (max-width: 470px) {
  .brand-copy strong { font-size: .85rem; }
  .icon-button:nth-child(2) { display: none; }
  .hero-panel { grid-template-columns: 1fr; }
  .hero-panel div { grid-template-columns: 48px 1fr; text-align: left; }
  .completion-box { align-items: flex-start; }
}

@media print {
  .site-header, .reading-progress, .side-nav, .step-check, .copy-button, .next-step, .toast { display: none !important; }
  body { background: #fff; font-size: 10.5pt; }
  .layout { display: block; max-width: none; padding: 0; }
  .hero { color: #000; background: #fff; box-shadow: none; border: 2px solid #3d0859; }
  .hero .eyebrow, .hero-lead, .hero-meta span, .hero-panel span { color: #333; }
  .hero h1, .hero-panel strong { color: #3d0859; }
  .content-card, .step-card { box-shadow: none; break-inside: avoid; }
  pre { white-space: pre-wrap; color: #000; background: #f3f3f3; }
  .code-block { box-shadow: none; background: #f3f3f3; }
  .code-title { color: #333; border-color: #ddd; }
  footer { padding: 20px 0; }
}

/* Language switch — bilingual microsite */
.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 42px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .04em;
  white-space: nowrap;
}
.language-switch a {
  color: var(--muted);
  text-decoration: none;
  transition: .2s ease;
}
.language-switch a:hover { color: var(--vsf-magenta); }
.language-switch a.active { color: var(--vsf-purple); }
.language-switch .separator { color: var(--line); }
@media (max-width: 470px) {
  .language-switch { height: 38px; padding: 0 8px; font-size: .72rem; }
}