:root {
  --ink: #1f2430; --muted: #6b7280; --line: #e5e7eb;
  --brand: #4d148c; --brand-dark: #3a0f6b; --accent: #f5a623;
  --bg: #f6f7f9; --card: #ffffff;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.shell { max-width: 1060px; margin: 0 auto; padding: 0 22px; }

.site-head { background: #16062b; color: #fff; border-bottom: 1px solid rgba(255,255,255,.08); }
.site-head .shell { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.brand { display: flex; align-items: center; gap: 9px; color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .2px; }
.brand:hover { text-decoration: none; }
.mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, var(--brand), #7b2dbb); color: #fff; font-weight: 800; }
.main-nav { display: flex; gap: 4px; }
.main-nav a { color: #d8cdee; padding: 7px 12px; border-radius: 6px; font-weight: 500; }
.main-nav a:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }

main.shell { padding-top: 40px; padding-bottom: 60px; }
.gallery-title { font-size: 30px; margin: 0 0 6px; }
.lede { color: var(--muted); margin: 0 0 28px; max-width: 62ch; }

.concept-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.concept-card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 20px 16px; color: inherit; box-shadow: 0 1px 2px rgba(16,24,40,.04); transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease; }
.concept-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(16,24,40,.09); border-color: #d1d5db; }
.concept-tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--brand); background: #f0e9fa; border-radius: 999px; padding: 3px 10px; }
.concept-card h2 { margin: 12px 0 6px; font-size: 19px; }
.concept-card p { color: var(--muted); font-size: 13.5px; margin: 0 0 14px; }
.concept-meta { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 12.5px; border-top: 1px solid var(--line); padding-top: 12px; }
.concept-meta .arrow { color: var(--brand); font-size: 14px; }
.empty { color: var(--muted); }

.auth-card { max-width: 380px; margin: 30px auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 26px 26px 22px; }
.auth-card h1 { margin: 0 0 6px; font-size: 22px; }
.auth-card form { display: grid; gap: 14px; margin-top: 18px; }
.auth-card label { display: grid; gap: 5px; font-size: 13px; font-weight: 600; color: #374151; }
.auth-card input { padding: 9px 11px; border: 1px solid #d1d5db; border-radius: 7px; font: inherit; }
.auth-card input:focus { outline: 2px solid #b9a1e8; outline-offset: 1px; border-color: var(--brand); }
.auth-card button { margin-top: 4px; padding: 10px; border: none; border-radius: 7px; background: var(--brand); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.auth-card button:hover { background: var(--brand-dark); }
.form-err { color: #b42318; font-size: 13px; margin: 0; }
.alt { font-size: 13.5px; color: var(--muted); margin: 16px 0 0; text-align: center; }

.site-foot { border-top: 1px solid var(--line); color: var(--muted); font-size: 12.5px; padding: 20px 0; }


/* ---- SaaS landing: hero + closing ---- */
.hero { padding: 64px 0 30px; }
.hero-inner { max-width: 780px; }
.hero-eyebrow { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand); margin-bottom: 14px; }
.hero-title { font-size: 44px; line-height: 1.1; letter-spacing: -.02em; margin: 0 0 16px; }
.hero-lede { font-size: 18px; line-height: 1.55; color: var(--muted); max-width: 56ch; margin: 0 0 26px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 11px 20px; border-radius: 9px; font-size: 15px; font-weight: 600; text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--brand), #7b2dbb); color: #fff; box-shadow: 0 1px 2px rgba(16,24,40,.1); }
.btn-primary:hover { text-decoration: none; background: linear-gradient(135deg, var(--brand-dark), #6a1f9c); }
.btn-ghost { color: var(--ink); border: 1px solid var(--line); background: var(--card); }
.btn-ghost:hover { text-decoration: none; border-color: #c9cede; }
.hero-facts { display: flex; gap: 26px; flex-wrap: wrap; list-style: none; margin: 34px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); }
.hero-facts li { display: grid; gap: 2px; }
.hero-facts strong { font-size: 14px; }
.hero-facts span { font-size: 13px; color: var(--muted); }
.concepts { padding-top: 8px; }

.closing { margin-top: 54px; padding: 40px; text-align: center; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(160deg, #fbf7ff, var(--bg)); }
.closing h2 { margin: 0 0 8px; font-size: 28px; }
.closing p { color: var(--muted); max-width: 52ch; margin: 0 auto 18px; }