:root {
    --bg: #ffffff;
    --bg-alt: #f7f9fc;
    --ink: #111111;
    --muted: #6f6f6f;
    --soft: #525252;
    --line: #dde1e6;
    --blue: #0f62fe;
    --blue-dark: #0043ce;
    --blue-soft: #edf5ff;
    --dark: #161616;
    --neon: #4589ff;
    --font: 'IBM Plex Sans', 'Helvetica Neue', Arial, ui-sans-serif, system-ui, sans-serif;
    --serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;
    --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --ink-dark: #f2efe9;
    --soft-dark: #8a9099;
    --muted-dark: #78808c;
    --max: 1180px;
    --gap: 96px;
    --ease-out: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; width: 100%; overflow-x: clip; scroll-padding-top: 96px; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
  @media (max-width: 860px) { html { scroll-padding-top: 132px; } }
  body { width: 100%; max-width: 100%; overflow-x: clip; font-family: var(--font); background: var(--bg); color: var(--ink); font-size: 17px; line-height: 1.5; letter-spacing: -0.01em; -webkit-font-smoothing: antialiased; }
  .wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; min-width: 0; }
  ::selection { background: var(--blue); color: #fff; text-shadow: none; }
  img { max-width: 100%; }

  h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: normal; line-height: 1.25; }
  .display { font-size: clamp(40px, 7.6vw, 76px); font-weight: 500; line-height: 1.08; letter-spacing: normal; }
  h2.sec { font-size: clamp(28px, 4vw, 48px); font-weight: 400; letter-spacing: normal; line-height: 1.15; max-width: 24ch; text-wrap: balance; }
  .head-row { display: block; }
  .head-row .rule { display: none; }
  .lead { font-size: 21px; line-height: 1.45; color: var(--soft); font-weight: 400; letter-spacing: -0.012em; }
  p.body { font-size: 18px; line-height: 1.55; color: var(--soft); font-weight: 400; }
  p.body + p.body { margin-top: 16px; }
  p.body b, .lead b { color: var(--ink); font-weight: 600; }
  .sec-label { display: flex; align-items: center; gap: 12px; color: var(--muted); font-family: var(--mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 18px; }
  .mono { font-family: var(--mono); font-size: 12px; font-weight: 500; line-height: 1.4; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }

  /* buttons */
  .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; text-decoration: none; font-family: var(--font); font-size: 15px; font-weight: 600; letter-spacing: -0.01em; border: 1px solid var(--blue); background: var(--blue); color: #fff; padding: 13px 24px; border-radius: 2px; transition: background-color .18s var(--ease-out), border-color .18s var(--ease-out), color .18s var(--ease-out), transform .18s var(--ease-out); white-space: nowrap; }
  .btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff; }
  .btn:active { transform: scale(0.97); transition-duration: 0s; }
  .btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
  a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 2px; }
  .btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
  .btn-ghost:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
  .band-dark .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.5); }
  .band-dark .btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }

  /* announce + nav */
  .skip { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--blue); color: #fff; padding: 12px 18px; font-size: 14px; font-weight: 600; text-decoration: none; }
  .skip:focus { left: 8px; top: 8px; }
  .announce { background: var(--dark); color: #f4f4f4; text-align: center; font-size: 14px; font-weight: 500; letter-spacing: -0.01em; padding: 10px 16px; }
  .announce a { display: inline-block; padding: 4px 2px; color: var(--neon); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
  nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.82); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color .18s var(--ease-out), background-color .18s var(--ease-out); }
  nav.scrolled { border-bottom-color: var(--line); background: rgba(255,255,255,0.92); }
  .nav-inner { height: 76px; max-width: 1640px; margin: 0 auto; padding: 0 clamp(20px, 3.5vw, 56px); display: flex; align-items: center; justify-content: space-between; }
  .brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
  .brand-mark { flex: none; display: block; }
  .wordmark { display: flex; flex-direction: column; align-items: flex-start; line-height: 1; }
  .wm-main { font-weight: 700; font-size: 15px; letter-spacing: 0.045em; text-transform: uppercase; color: var(--ink); white-space: nowrap; }
  .wm-main em { font-style: normal; color: var(--blue); }
  .wm-sub { display: flex; align-items: center; gap: 7px; font-size: 9.5px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); margin-top: 5px; white-space: nowrap; }
  .wm-sub i { display: block; height: 1px; width: 22px; background: var(--blue); }
  .nav-links { display: flex; gap: 26px; align-items: center; }
  .nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; }
  .nav-links a:hover { color: var(--ink); }
  .nav-links .btn { padding: 9px 18px; font-size: 13px; color: #fff; }
  .nav-menu { display: flex; align-items: center; gap: 26px; min-width: 0; }
  .nav-menu a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; white-space: nowrap; }
  .nav-menu a:hover { color: var(--ink); }
  @media (max-width: 860px) {
    .nav-inner { height: auto; flex-wrap: wrap; row-gap: 0; padding-top: 12px; padding-bottom: 2px; }
    .brand { flex: 1 1 auto; min-width: 0; }
    .nav-links { flex: 0 0 auto; order: 2; }
    .nav-menu { flex: 1 0 100%; order: 3; gap: 22px; justify-content: center; overflow-x: auto; padding: 12px 0 8px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .nav-menu::-webkit-scrollbar { display: none; }
    .nav-menu a { padding: 6px 0; }
  }
  @media (max-width: 470px) {
    .nav-inner { padding-left: 16px; padding-right: 16px; }
    .brand-mark { width: 24px; height: 12px; }
    .brand-mark path { stroke-width: 14; }
    .wm-main { font-size: 12.5px; letter-spacing: 0.035em; }
    .wm-sub { font-size: 8px; letter-spacing: 0.22em; margin-top: 4px; }
    .wm-sub i { width: 16px; }
    .nav-links .btn { padding: 8px 13px; font-size: 12px; min-height: 44px; }
    .announce { font-size: 13px; padding: 9px 14px; }
  }

  /* bands */
  .band { padding: var(--gap) 0; }
  .band-alt { background: var(--bg-alt); }
  .band-dark { background: var(--dark); color: var(--ink-dark); position: relative; overflow: hidden; }
  .band-dark::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 58px 58px; -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 22%, transparent 80%); mask-image: radial-gradient(120% 100% at 50% 0%, #000 22%, transparent 80%); pointer-events: none; }
  .band-dark > .wrap { position: relative; z-index: 1; }
  .band-dark .sec-label { color: var(--muted-dark, rgba(242,239,233,0.55)); }
  .band-dark p.body { color: var(--soft-dark); }
  .band-dark p.body b { color: var(--ink-dark); }
  .band-dark h2.sec { color: var(--ink-dark); }

  /* hero */
  .hero { padding: 88px 0 74px; position: relative; overflow: hidden; }
  .hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(to right, rgba(17,17,17,0.04) 1px, transparent 1px), linear-gradient(to bottom, rgba(17,17,17,0.04) 1px, transparent 1px); background-size: 58px 58px; -webkit-mask-image: radial-gradient(125% 95% at 50% -8%, #000 26%, transparent 78%); mask-image: radial-gradient(125% 95% at 50% -8%, #000 26%, transparent 78%); pointer-events: none; }
  .hero .wrap { position: relative; z-index: 1; text-align: left; }
  .hero .sub { margin: 0; max-width: 48ch; font-size: 19px; line-height: 1.48; color: var(--soft); }
  .hero .sub b { color: var(--ink); font-weight: 600; }
  /* proof strip */
  .proof { margin: 68px 0 0; width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); text-align: left; }
  .proof-item { padding: 24px 30px 0 0; border-right: 1px solid var(--line); }
  .proof-item + .proof-item { padding-left: 30px; }
  .proof-item:last-child { border-right: 0; }
  .proof-k { font-family: var(--mono); font-size: 31px; font-weight: 500; letter-spacing: 0.01em; color: var(--ink); line-height: 1; font-variant-numeric: tabular-nums; }
  .proof-v { font-family: var(--mono); font-size: 13px; font-weight: 500; line-height: 1.4; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin-top: 12px; }
  @media (max-width: 720px) {
    .proof { grid-template-columns: repeat(2, 1fr); }
    .proof-item { padding-bottom: 22px; }
    .proof-item:nth-child(2n) { border-right: 0; padding-left: 30px; }
    .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
    .proof-item:nth-child(3) { padding-left: 0; }
  }

  /* pillars */
  .pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 64px; }
  @media (max-width: 900px) { .pillars { grid-template-columns: 1fr; } }
  .pillar { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 44px 44px; display: flex; flex-direction: column; transition: background-color .2s var(--ease-out); }
  .pillar:hover { background: #fbfcfe; box-shadow: inset 0 2px 0 0 var(--blue); }
  .pillar p { font-size: 16.5px; line-height: 1.55; color: var(--soft); }

  /* approach - three phases */
  .phases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; margin-top: 64px; }
  @media (max-width: 900px) { .phases { grid-template-columns: 1fr; gap: 40px; } }
  .phase { position: relative; padding-top: 26px; border-top: 1px solid var(--line); }
  .phase-no { font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue); }
  .phase h3 { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.25; margin: 14px 0 12px; padding-right: clamp(40px, 4vw, 56px); }
  .phase p { font-size: 16.5px; line-height: 1.55; color: var(--soft); }
  .phase-num { position: absolute; right: 0; top: 18px; font-family: var(--mono); font-size: clamp(38px, 4.4vw, 60px); font-weight: 500; line-height: 1; color: var(--line); letter-spacing: 0.01em; user-select: none; }

  /* closing */
  .band-close { padding: 124px 0 116px; }
  .close-inner { text-align: center; max-width: 720px; margin: 0 auto; }
  .close-inner .sec-label { justify-content: center; }
  .close-inner h2.sec { max-width: 16ch; margin: 0 auto; }
  .close-inner p.body { max-width: 56ch; margin-left: auto; margin-right: auto; }
  .close-cta { margin-top: 34px; display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

  /* footer */
  footer { background: var(--dark); color: var(--soft-dark); padding: 58px 0 40px; }
  .foot-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; align-items: flex-start; }
  .foot-links { display: flex; gap: 28px; flex-wrap: wrap; }
  footer a { display: inline-block; padding: 6px 0; color: var(--soft-dark); text-decoration: none; font-size: 14px; }
  footer a:hover { color: var(--ink-dark); }
  .foot-bottom { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(242,239,233,0.12); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-family: var(--mono); font-size: 12px; font-weight: 500; line-height: 1.4; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted-dark); }
  footer .brand .wm-main { color: var(--ink-dark); }
  footer .brand .wm-main em { color: var(--neon); }
  footer .brand .wm-sub { color: var(--muted-dark); }
  footer .brand .wm-sub i { background: var(--neon); }