/* Tavon — performance marketing & growth consultancy
   Light, cool-toned design system. No photography; geometry only. */

:root {
  --ink: #0b1220;
  --ink-2: #1c2536;
  --muted: #5b6472;
  --line: #e4e8ef;
  --line-strong: #cbd2dc;
  --paper: #fafbfd;
  --paper-2: #f2f5f9;
  --white: #ffffff;
  --indigo: #1e3a8a;
  --indigo-2: #2743a3;
  --cyan: #06b6d4;
  --cyan-soft: #e0f7fb;
  --cyan-text: #0e7490;   /* 4.8:1 on white — use for cyan *text*; #06b6d4 stays for non-text accents */
  --lime: #a3e635;
  --radius: 6px;
  --radius-lg: 10px;
  --wrap: 1140px;
  --head-h: 68px;
  --font-display: "Sora", "Noto Sans SC", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  --ease: cubic-bezier(.2,.7,.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  background-image: radial-gradient(rgba(11,18,32,.06) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -.015em; line-height: 1.15; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }
img, svg { display: block; max-width: 100%; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--indigo);
}
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--cyan); }
.h-xl { font-size: clamp(2.4rem, 5.2vw, 3.9rem); }
.h-lg { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
.h-md { font-size: 1.25rem; }
.lead { font-size: 1.125rem; color: var(--muted); max-width: 60ch; }
.muted { color: var(--muted); }
.sec { padding: 96px 0; }
.sec-tint { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { display: grid; gap: 14px; max-width: 720px; margin-bottom: 48px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: .95rem; border: 1px solid transparent;
  transition: background .2s var(--ease), color .2s, border-color .2s, transform .2s var(--ease);
  cursor: pointer;
}
.btn svg { width: 16px; height: 16px; }
.btn-ink { background: var(--ink); color: var(--white); }
.btn-ink:hover { background: var(--indigo); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-line:hover { border-color: var(--ink); }
.btn-cyan { background: var(--cyan); color: var(--ink); }
.btn-cyan:hover { background: #22c8e3; }

/* Header */
.tv-header {
  position: sticky; top: 0; z-index: 50; height: var(--head-h);
  background: rgba(250,251,253,.86); backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.tv-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.tv-logo { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -.01em; }
.tv-logo svg { width: 28px; height: 28px; }
.tv-nav { display: flex; align-items: center; gap: 30px; }
.tv-nav a { font-size: .92rem; font-weight: 500; color: var(--ink-2); position: relative; padding: 6px 0; }
.tv-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px; background: var(--cyan); transition: right .25s var(--ease); }
.tv-nav a:hover::after, .tv-nav a[aria-current="page"]::after { right: 0; }
.tv-tools { display: flex; align-items: center; gap: 14px; }
.lang {
  display: inline-flex; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden;
}
.lang button { border: 0; background: transparent; padding: 6px 11px; font-size: .78rem; font-weight: 600; color: var(--muted); cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--white); }
.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--white); cursor: pointer; position: relative; }
.burger::before, .burger::after { content: ""; position: absolute; left: 11px; right: 11px; height: 2px; background: var(--ink); transition: transform .25s var(--ease), top .25s var(--ease); }
.burger::before { top: 14px; } .burger::after { top: 24px; }
.burger[aria-expanded="true"]::before { top: 19px; transform: rotate(45deg); }
.burger[aria-expanded="true"]::after { top: 19px; transform: rotate(-45deg); }

/* Hero */
.tv-hero { padding: 88px 0 72px; position: relative; overflow: hidden; }
.tv-hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-copy { display: grid; gap: 22px; }
.hero-copy .h-xl { max-width: 14ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.hero-note { font-size: .85rem; color: var(--muted); }
.hero-art { position: relative; aspect-ratio: 1 / 1; }
.hero-art svg { width: 100%; height: 100%; }
@keyframes drift { 0%,100% { transform: translate(0,0); } 50% { transform: translate(0,-10px); } }
.hero-art .float { animation: drift 7s var(--ease) infinite; }
@media (prefers-reduced-motion: reduce) { .hero-art .float { animation: none; } }

/* Platform chips */
.tv-platforms { padding: 26px 0 8px; }
.chips { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.chips-label { font-size: .82rem; font-weight: 600; color: var(--muted); margin-right: 6px; }
.chip { padding: 7px 13px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--white); font-size: .84rem; font-weight: 500; color: var(--ink-2); }

/* Bento grid */
.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.bento > article { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px; display: grid; gap: 12px; align-content: start; position: relative; overflow: hidden; }
.bento > article:hover { border-color: var(--line-strong); }
.bento .span-7 { grid-column: span 7; } .bento .span-5 { grid-column: span 5; }
.bento .span-4 { grid-column: span 4; } .bento .span-8 { grid-column: span 8; }
.bento .tag-num { font-family: var(--font-display); font-size: .78rem; font-weight: 600; color: var(--cyan-text); letter-spacing: .1em; }
.bento h3 { font-size: 1.28rem; }
.bento p { color: var(--muted); font-size: .96rem; }
.bento ul { display: grid; gap: 6px; margin-top: 6px; }
.bento li { font-size: .92rem; color: var(--ink-2); padding-left: 16px; position: relative; }
.bento li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; background: var(--cyan); transform: rotate(45deg); }
.bento .accent-bar { position: absolute; inset: 0 auto 0 0; width: 4px; background: linear-gradient(180deg, var(--indigo), var(--cyan)); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { position: relative; padding: 0 22px 0 0; display: grid; gap: 10px; }
.step:not(:last-child)::after { content: ""; position: absolute; top: 22px; left: 44px; right: 0; height: 1px; background: var(--line-strong); }
.step .dot { width: 44px; height: 44px; border-radius: 50%; background: var(--white); border: 2px solid var(--indigo); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: var(--indigo); position: relative; z-index: 1; }
.step h3 { font-size: 1.05rem; margin-top: 8px; }
.step p { color: var(--muted); font-size: .92rem; }

/* Table */
.tv-table { width: 100%; border-collapse: collapse; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.tv-table th, .tv-table td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .94rem; }
.tv-table th { font-family: var(--font-display); font-weight: 600; font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; color: var(--indigo); background: var(--paper-2); }
.tv-table tr:last-child td { border-bottom: 0; }
.tv-table td:first-child { font-weight: 600; white-space: nowrap; }
.tv-table td .muted { display: block; font-size: .86rem; margin-top: 2px; }
.table-scroll { overflow-x: auto; }

/* Three-up */
.threes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.three { padding: 26px 0 0; border-top: 2px solid var(--ink); display: grid; gap: 10px; }
.three h3 { font-size: 1.1rem; }
.three p { color: var(--muted); font-size: .95rem; }

/* CTA band */
.tv-cta { background: var(--ink); color: var(--white); padding: 72px 0; }
.tv-cta .wrap { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.tv-cta h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 22ch; }
.tv-cta p { color: #b9c2d0; margin-top: 10px; }

/* Service detail blocks */
.svc { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; padding: 56px 0; border-top: 1px solid var(--line); }
.svc:first-of-type { border-top: 0; }
.svc-head { display: grid; gap: 12px; align-content: start; align-self: start; position: sticky; top: calc(var(--head-h) + 24px); }
.svc-head .idx { font-family: var(--font-display); color: var(--cyan-text); font-weight: 700; }
.svc-body { display: grid; gap: 16px; }
.svc-body p { color: var(--muted); }
.svc-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; }
.svc-list li { padding: 12px 14px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); font-size: .92rem; }

/* FAQ (native details) */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 18px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 600; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-display); color: var(--indigo); font-size: 1.2rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 16px; color: var(--muted); font-size: .95rem; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
.principles { display: grid; gap: 14px; }
.principle { display: grid; grid-template-columns: 36px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.principle .k { font-family: var(--font-display); font-weight: 700; color: var(--cyan-text); }
.principle h3 { font-size: 1rem; margin-bottom: 4px; }
.principle p { color: var(--muted); font-size: .93rem; }
.fact { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; display: grid; gap: 10px; }
.fact dl { margin: 0; display: grid; gap: 10px; }
.fact .principle:last-child { border-bottom: 0; }
.fact dt { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.fact dd { margin: 0 0 8px; font-weight: 600; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.contact-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; display: grid; gap: 18px; }
.contact-card .row { display: grid; gap: 4px; }
.contact-card .row span { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.contact-card .row a { font-weight: 600; color: var(--indigo); }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; }
.form label > span { font-size: .85rem; font-weight: 600; }
.form input, .form select, .form textarea {
  font: 400 1rem/1.5 var(--font-body); padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--white); color: var(--ink);
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--cyan); outline-offset: 1px; border-color: var(--cyan); }
.form textarea { min-height: 140px; resize: vertical; }
.form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-note { font-size: .82rem; color: var(--muted); }

/* Footer */
.tv-footer { border-top: 1px solid var(--line); background: var(--white); padding: 40px 0 28px; }
.tv-footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.tv-footer h4 { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.tv-footer a { display: block; font-size: .92rem; color: var(--ink-2); padding: 3px 0; }
.tv-footer a:hover { color: var(--indigo); }
.tv-footer .legal { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 8px; font-size: .82rem; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* Page header (inner pages) */
.page-head { padding: 72px 0 40px; border-bottom: 1px solid var(--line); background: var(--white); }
.page-head .wrap > .page-head-inner { display: grid; gap: 14px; max-width: 760px; }

/* Responsive */
@media (max-width: 960px) {
  .tv-hero .wrap { grid-template-columns: 1fr; }
  .hero-art { max-width: 420px; }
  .bento .span-7, .bento .span-5, .bento .span-4, .bento .span-8 { grid-column: span 12; }
  .steps { grid-template-columns: 1fr 1fr; gap: 28px; }
  .step::after { display: none; }
  .threes { grid-template-columns: 1fr; }
  .svc { grid-template-columns: 1fr; }
  .svc-head { position: static; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .tv-cta .wrap { grid-template-columns: 1fr; }
  .tv-footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .sec { padding: 64px 0; }
  .tv-nav { position: fixed; inset: var(--head-h) 0 auto 0; background: var(--white); border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 20px 16px; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s var(--ease); }
  .tv-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .tv-nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .burger { display: block; }
  .steps { grid-template-columns: 1fr; }
  .svc-list { grid-template-columns: 1fr; }
  .form .two { grid-template-columns: 1fr; }
  .tv-footer .wrap { grid-template-columns: 1fr; }
}