/* ============================================================
   OrgSignal Landing — cool "App" editorial system
   White paper · slate neutrals · navy ink · indigo signal accent
   (matches Analyst Workspace tone for visual continuity)
   ============================================================ */
:root{
  --air: 1.25;
  --accent: #2f5fb3;
  --header-h: 68px;

  --paper:        #f6f7f9;
  --paper-2:      #eceff3;
  --surface:      #ffffff;
  --ink:          #111728;
  --ink-soft:     #586173;
  --ink-faint:    #8a93a6;
  --hairline:     #e4e8ee;
  --hairline-2:   #cfd6e0;

  --risk:    #c81e3a;
  --strength:#1f8a5b;
  --watch:   #3556bf;
  --neutral: #8a93a6;

  --container: 1240px;
  --pad-x: clamp(22px, 5vw, 84px);

  --section-pad: calc(7.5rem * var(--air));
}

*{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: 'Hanken Grotesk', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection{ background: var(--ink); color: var(--paper); }
a{ color: inherit; text-decoration: none; }
h1,h2,h3,h4,h5,h6,p{ margin: 0; }
img{ max-width: 100%; display: block; }

.wrap{ max-width: var(--container); margin: 0 auto; padding-inline: var(--pad-x); }

/* ---------- type ---------- */
.eyebrow{
  font-size: 11px; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
}
.meta{
  font-size: 11px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint);
}
.display{
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.06;
  font-size: clamp(36px, 4.3vw, 53px); text-wrap: balance;
}
.h2{
  font-weight: 700; letter-spacing: -0.022em; line-height: 1.08;
  font-size: clamp(30px, 3.6vw, 46px); text-wrap: balance;
}
.h3{ font-weight: 600; font-size: 24px; letter-spacing: -0.01em; line-height: 1.25; }
.h4{ font-weight: 600; font-size: 18px; letter-spacing: -0.005em; line-height: 1.3; }
.lead{ font-size: clamp(17px, 1.4vw, 19px); line-height: 1.7; color: var(--ink-soft); }
.body{ font-size: 15px; line-height: 1.65; color: var(--ink-soft); }
.body-sm{ font-size: 13.5px; line-height: 1.6; color: var(--ink-soft); }
.tnum{ font-variant-numeric: tabular-nums; }

/* ---------- buttons ---------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  appearance: none; font-family: inherit;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 15px 26px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  cursor: pointer; transition: background .25s, color .25s, transform .25s, border-color .25s;
}
.btn:hover{ background: transparent; color: var(--ink); }
.btn--ghost{ background: transparent; color: var(--ink); }
.btn--ghost:hover{ background: var(--ink); color: var(--paper); }
.btn--invert{ background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--invert:hover{ background: transparent; color: var(--paper); }
.btn--sm{ padding: 10px 16px; }

.link-ul{ position: relative; }
.link-ul::after{
  content:""; position:absolute; left:0; bottom:-3px; height:1px; width:100%;
  background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.link-ul:hover::after{ transform: scaleX(1); }

/* ---------- header ---------- */
.site-head{
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--hairline);
}
.site-head .wrap{ display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand{ font-weight: 700; font-size: 19px; letter-spacing: -0.02em; white-space: nowrap; }
.nav-right{ display: flex; align-items: center; gap: 22px; }
.main-nav{ display: flex; align-items: center; gap: 26px; margin-right: 4px; }
.main-nav a{
  position: relative; padding: 4px 0;
  font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-soft); transition: color .2s;
}
.main-nav a::after{
  content:""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .28s ease;
}
.main-nav a:hover{ color: var(--ink); }
.main-nav a:hover::after{ transform: scaleX(1); }
.main-nav a.is-active{ color: var(--ink); }
.main-nav a.is-active::after{ transform: scaleX(1); }
.nav-sep{ width: 1px; height: 18px; background: var(--hairline-2); }
.lang{ display: flex; align-items: center; gap: 9px; }
.lang a{
  font-size: 11px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--ink-faint); transition: color .2s; padding: 2px 0;
}
.lang a:hover{ color: var(--ink); }
.lang a[aria-current="page"]{ color: var(--accent); }
.lang .sep{ color: var(--hairline-2); font-size: 11px; }
.nav-link{ font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }

/* ---------- section rhythm ---------- */
.section{ padding-block: var(--section-pad); }
.section--tight{ padding-block: calc(var(--section-pad) * 0.7); }
.rule-top{ border-top: 1px solid var(--hairline); }
.rule-y{ border-block: 1px solid var(--hairline); }
.section[id], main[id]{ scroll-margin-top: calc(var(--header-h) + 24px); }

main{ padding-top: var(--header-h); }

/* ---------- hero ---------- */
.hero{ padding-block: calc(var(--section-pad) * 0.75) var(--section-pad); }
.hero-grid{
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.hero-copy{ display: flex; flex-direction: column; align-items: flex-start; gap: 26px; max-width: 33ch; }
.tag{
  display: inline-block; white-space: nowrap; font-size: 11px; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-soft);
  border: 1px solid var(--hairline-2); padding: 6px 11px; background: var(--surface);
}
.hero h1{ max-width: 16ch; }
.hero .lead{ max-width: 42ch; }
.hero-cta{ display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.hero-note{ font-size: 13px; font-style: italic; color: var(--ink-faint); }

/* ---------- hero product card ---------- */
.card-stack{ position: relative; }
.card-stack::before{
  content:""; position: absolute; inset: 18px -18px -18px 18px;
  border: 1px solid var(--hairline-2); z-index: 0;
}
.brief{
  position: relative; z-index: 1; background: var(--surface);
  border: 1px solid var(--hairline-2);
  box-shadow: 0 1px 0 var(--hairline), 0 24px 50px -38px rgba(27,24,19,.5);
}
.brief-bar{
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 13px 18px; border-bottom: 1px solid var(--hairline);
}
.brief-bar .meta{ white-space: nowrap; letter-spacing: 0.09em; }
.brief-bar .dot{ width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.brief-id{ display: flex; align-items: center; gap: 9px; }
.brief-tabs{ display: flex; gap: 0; padding: 0 18px; border-bottom: 1px solid var(--hairline); }
.brief-tab{
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-faint); padding: 12px 0; margin-right: 22px; border-bottom: 2px solid transparent;
  margin-bottom: -1px; cursor: default;
}
.brief-tab.is-active{ color: var(--ink); border-bottom-color: var(--ink); }
.brief-body{ padding: 22px 18px; display: flex; flex-direction: column; gap: 20px; }
.brief-narr-label{ display: flex; align-items: center; gap: 8px; margin-bottom: 9px; }
.brief-narr-label .meta{ white-space: nowrap; }
.brief-narr-label::before{ content:""; width: 14px; height: 1px; flex: none; background: var(--accent); }

.sigcard{ border: 1px solid var(--hairline); border-top: 3px solid var(--risk); background: var(--paper); }
.sigcard-h{ display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 0; }
.sigcard-title{ font-size: 13px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap; }
.pill{
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap;
  padding: 3px 7px; background: color-mix(in srgb, var(--risk) 13%, transparent); color: var(--risk);
}
.sigcard-stats{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 14px 16px; }
.stat .k{ font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 4px; }
.stat .v{ font-size: 26px; font-weight: 700; line-height: 1; }
.evidence{ margin: 0 16px 16px; padding: 11px 13px; background: var(--surface); border-left: 2px solid var(--risk); }
.evidence .k{ font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--risk); margin-bottom: 5px; }
.evidence p{ font-size: 13px; font-style: italic; color: var(--ink-soft); }
.brief-foot{
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 18px; border-top: 1px solid var(--hairline); font-size: 11px; color: var(--ink-faint);
}
.mini-list{ display: flex; flex-direction: column; }
.mini{ display: flex; align-items: center; gap: 12px; padding: 11px 0; border-top: 1px solid var(--hairline); }
.mini:first-child{ border-top: 0; }
.mini .swatch{ width: 3px; height: 26px; flex: none; }
.mini .t{ font-size: 13px; font-weight: 600; flex: 1; }
.mini .v{ font-size: 12px; color: var(--ink-faint); }

/* ---------- diagnosis ---------- */
.diagnosis{ background: var(--paper-2); }
.diag-head{ max-width: 46ch; margin-bottom: clamp(40px, 5vw, 72px); display: flex; flex-direction: column; gap: 18px; }
.col-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 4vw, 56px); }
.diag-item{ border-top: 1px solid var(--hairline-2); padding-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.pull{
  margin-top: clamp(48px, 6vw, 84px); max-width: 52ch;
  border-left: 2px solid var(--accent); padding: 6px 0 6px 28px;
  font-size: clamp(18px, 1.6vw, 21px); line-height: 1.55; color: var(--ink); text-wrap: pretty;
}

/* ---------- signal register ---------- */
.reg-head{ display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: clamp(40px, 5vw, 72px); flex-wrap: wrap; }
.reg-head .ttl{ display: flex; flex-direction: column; gap: 16px; }
.signals{ display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 1.6vw, 24px); }
.signal{
  border: 1px solid var(--hairline); border-top: 3px solid var(--neutral); background: var(--surface);
  padding: 22px; display: flex; flex-direction: column; gap: 0;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.signal:hover{ transform: translateY(-3px); box-shadow: 0 20px 40px -30px rgba(27,24,19,.45); }
.signal .lbl{ display: flex; align-items: center; gap: 9px; margin-bottom: 16px; }
.signal .lbl span{ font-size: 10.5px; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; }
.signal .glyph{ width: 9px; height: 9px; flex: none; }
.signal h5{ font-size: 18px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 8px; }
.signal .desc{ font-size: 13.5px; line-height: 1.55; color: var(--ink-soft); margin-bottom: 22px; flex: 1; }
.bar{ height: 2px; background: var(--hairline); position: relative; }
.bar > i{ position: absolute; left: 0; top: 0; height: 100%; }
.signal--neutral{ border-top-color: var(--neutral); }
.signal--neutral .lbl{ color: var(--neutral); }
.signal--neutral .glyph{ background: var(--neutral); }
.signal--neutral .bar > i{ background: var(--neutral); }
.signal--risk{ border-top-color: var(--risk); }
.signal--risk .lbl{ color: var(--risk); }
.signal--risk .glyph{ background: var(--risk); }
.signal--risk .bar > i{ background: var(--risk); }
.signal--str{ border-top-color: var(--strength); }
.signal--str .lbl{ color: var(--strength); }
.signal--str .glyph{ background: var(--strength); }
.signal--str .bar > i{ background: var(--strength); }
.signal--watch{ border-top-color: var(--watch); }
.signal--watch .lbl{ color: var(--watch); }
.signal--watch .glyph{ background: var(--watch); }
.signal--watch .bar > i{ background: var(--watch); }

/* ---------- trust (dark) ---------- */
.trust{ background: var(--ink); color: var(--paper); }
.trust-grid{ display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(48px, 7vw, 120px); align-items: center; }
.trust .eyebrow{ color: color-mix(in srgb, var(--accent) 78%, white 30%); }
.trust h2{ color: var(--paper); margin-block: 22px 26px; }
.trust .lead{ color: color-mix(in srgb, var(--paper) 72%, transparent); }
.trust-copy{ display: flex; flex-direction: column; gap: 18px; }
.tiles{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(14px, 1.4vw, 22px); }
.tile{ border: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); padding: 22px; display: flex; flex-direction: column; gap: 9px; }
.tile h6{ font-size: 10.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: color-mix(in srgb, var(--paper) 60%, transparent); margin: 0; }
.tile p{ font-size: 13.5px; line-height: 1.5; color: color-mix(in srgb, var(--paper) 82%, transparent); }

/* ---------- process ---------- */
.proc-head{ max-width: 30ch; margin-bottom: clamp(40px, 5vw, 72px); }
.steps{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.step{ border-top: 1px solid var(--hairline-2); padding: 30px 40px 0 0; transition: border-color .3s; }
.step:hover{ border-top-color: var(--accent); }
.step .num{ font-size: 28px; font-weight: 700; color: var(--ink-faint); transition: color .3s; }
.step:hover .num{ color: var(--accent); }
.step h4{ margin: 18px 0 10px; }

/* ---------- author ---------- */
.author{ background: var(--paper-2); }
.author-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 96px); }
.author-l{ display: flex; flex-direction: column; gap: 18px; max-width: 38ch; }
.accent-rule{ display: block; width: 56px; height: 2px; background: var(--accent); }
.author-r{ display: flex; flex-direction: column; justify-content: flex-end; gap: 12px; }
.author-contact{ display: flex; flex-direction: column; gap: 0; margin-top: 6px; border-top: 1px solid var(--hairline-2); }
.author-contact a{
  display: flex; align-items: center; gap: 12px; padding: 13px 0;
  border-bottom: 1px solid var(--hairline); font-size: 14px; font-weight: 600;
  color: var(--ink); transition: color .2s;
}
.author-contact a:hover{ color: var(--accent); }
.author-contact .ci{ font-size: 10.5px; font-weight: 700; letter-spacing: 0.11em; text-transform: uppercase; color: var(--ink-faint); flex: none; width: 84px; }
.author-contact .cv{ flex: 1; overflow-wrap: anywhere; }
.author-contact .arr{ color: var(--ink-faint); transition: transform .2s, color .2s; }
.author-contact a:hover .arr{ transform: translateX(3px); color: var(--accent); }

/* ---------- demo modal ---------- */
.modal-scrim{
  position: fixed; inset: 0; z-index: 200; display: none;
  align-items: center; justify-content: center; padding: 24px;
  background: color-mix(in srgb, var(--ink) 46%, transparent);
  backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
}
.modal-scrim.is-open{ display: flex; }
html.anim-on .modal-scrim.is-open{ animation: scrimIn .25s ease; }
@keyframes scrimIn{ from{ opacity: 0; } to{ opacity: 1; } }
.modal{
  position: relative; width: 100%; max-width: 520px; background: var(--surface);
  border: 1px solid var(--hairline-2); box-shadow: 0 40px 90px -50px rgba(27,24,19,.7);
  max-height: calc(100vh - 48px); overflow-y: auto;
}
html.anim-on .modal-scrim.is-open .modal{ animation: modalIn .3s cubic-bezier(.2,.6,.2,1); }
@keyframes modalIn{ from{ opacity: 0; transform: translateY(14px); } to{ opacity: 1; transform: none; } }
.modal-top{ border-top: 3px solid var(--accent); }
.modal-head{ display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 26px 28px 0; }
.modal-head .eyebrow{ display: block; margin-bottom: 10px; }
.modal-close{
  appearance: none; border: 1px solid var(--hairline-2); background: var(--paper); cursor: pointer;
  width: 32px; height: 32px; flex: none; font-size: 16px; line-height: 1; color: var(--ink-soft);
  display: flex; align-items: center; justify-content: center; transition: background .2s, color .2s;
}
.modal-close:hover{ background: var(--ink); color: var(--paper); }
.modal-title{ font-size: 24px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
.modal-sub{ font-size: 14px; color: var(--ink-soft); line-height: 1.5; padding: 10px 28px 0; }
.modal-form{ padding: 22px 28px 28px; display: flex; flex-direction: column; gap: 16px; }
.field{ display: flex; flex-direction: column; gap: 6px; }
.field label{ font-size: 10.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.field label .req{ color: var(--accent); }
.field input, .field textarea{
  font-family: inherit; font-size: 15px; color: var(--ink); background: var(--paper);
  border: 1px solid var(--hairline-2); padding: 11px 13px; width: 100%; resize: vertical;
  transition: border-color .2s, background .2s;
}
.field textarea{ min-height: 112px; line-height: 1.5; }
.field input::placeholder, .field textarea::placeholder{ color: var(--ink-faint); }
.field input:focus, .field textarea:focus{ outline: none; border-color: var(--accent); background: var(--surface); }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"]{ border-color: var(--risk); }
.field-error{ font-size: 12px; color: var(--risk); line-height: 1.45; }
.form-alert{
  border: 1px solid var(--hairline-2); border-left: 3px solid var(--accent);
  background: var(--paper); padding: 11px 13px; font-size: 13px; color: var(--ink-soft);
}
.form-alert--error{ border-left-color: var(--risk); }
.form-alert--warning{ border-left-color: var(--watch); }
.modal-form .btn{ margin-top: 4px; }
.modal-foot{ font-size: 12px; color: var(--ink-faint); line-height: 1.5; }
.modal-done{ padding: 40px 28px 44px; text-align: center; display: none; flex-direction: column; align-items: center; gap: 14px; }
.modal.is-done .modal-form{ display: none; }
.modal.is-done .modal-done{ display: flex; }
.modal-done .check{ width: 46px; height: 46px; border: 2px solid var(--strength); color: var(--strength); display: flex; align-items: center; justify-content: center; font-size: 22px; }
.modal-done h4{ font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.modal-done p{ font-size: 14px; color: var(--ink-soft); line-height: 1.55; max-width: 34ch; }
.hp-field{ position: absolute; left: -100vw; width: 1px; height: 1px; overflow: hidden; }

/* ---------- final cta ---------- */
.final{ background: var(--ink); color: var(--paper); }
.final .wrap{ display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding-block: clamp(40px, 5vw, 64px); }
.final h2{ color: var(--paper); max-width: 24ch; }

/* ---------- footer ---------- */
.foot{ border-top: 1px solid var(--hairline); }
.foot .wrap{ display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 40px; flex-wrap: wrap; }
.foot-brand{ display: flex; flex-direction: column; gap: 7px; }
.foot-links{ display: flex; gap: 26px; }
.foot-links a{ font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); }
.foot-links a:hover{ color: var(--ink); }

/* ---------- entrance animations (opt-in via html.anim-on) ---------- */
html.anim-on .reveal{ opacity: 0; transform: translateY(18px); }
html.anim-on .reveal.in-view{
  opacity: 1; transform: none;
  transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1);
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  html.anim-on .reveal{ opacity: 1 !important; transform: none !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1100px){
  .nav-right{ gap: 16px; }
  .main-nav{ gap: 18px; }
}
@media (max-width: 980px){
  .hero-grid, .trust-grid, .author-grid{ grid-template-columns: 1fr; }
  .col-3{ grid-template-columns: 1fr; gap: 28px; }
  .signals{ grid-template-columns: 1fr 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .step{ padding-right: 0; }
  .hero-copy{ max-width: none; }
}
@media (max-width: 860px){
  .main-nav, .nav-sep{ display: none; }
}
@media (max-width: 560px){
  body{ font-size: 16px; }
  .signals{ grid-template-columns: 1fr; }
  .tiles{ grid-template-columns: 1fr; }
  .nav-link.hide-sm, .lang.hide-sm{ display: none; }
  .modal{ max-height: calc(100vh - 28px); }
  .modal-head, .modal-sub, .modal-form, .modal-done{ padding-left: 20px; padding-right: 20px; }
}