/* Zayak AI — site styles
   Visual system: "Field Guide" — grid paper, navy ink, logo teal→blue. */

:root {
  --paper: #F5F7F5;
  --card: #FFFFFF;
  --tint: #F0F4F4;
  --ink: #0F1D2B;
  --ink-2: #3E4C59;
  --ink-3: #5B6B78;
  --line: rgba(15, 29, 43, 0.10);
  --line-strong: rgba(15, 29, 43, 0.20);
  --teal: #0B6E8A;
  --teal-soft: #E3F3F4;
  --teal-ink: #0B5F6B;
  --blue-soft: #E4ECF8;
  --blue-ink: #0A4F87;
  --ok: #0B8A5A;
  --grad: linear-gradient(100deg, #0E9AA7, #0A4F9E);
  --night: #0F1D2B;
  --night-2: #172838;
  --night-text: #C4D2DC;
  --night-mute: #93A7B6;
  --night-accent: #7FD3DA;

  --f-display: 'Sora', 'Figtree', system-ui, sans-serif;
  --f-body: 'Figtree', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --gutter: clamp(20px, 5.5vw, 80px);
  --maxw: 1280px;
  --radius: 18px;
  --section: clamp(72px, 9vw, 120px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(15, 29, 43, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 29, 43, 0.045) 1px, transparent 1px);
  background-size: 40px 40px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--blue-ink); }
:focus-visible { outline: 3px solid #0E9AA7; outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--f-display); margin: 0; text-wrap: balance; letter-spacing: -0.02em; line-height: 1.1; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: calc(var(--maxw) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; color: #fff; }

/* ---------- type helpers ---------- */
.eyebrow { font-family: var(--f-mono); font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); }
.eyebrow--night { color: var(--night-accent); }
.h1 { font-size: clamp(40px, 5.4vw, 72px); line-height: 1.02; letter-spacing: -0.035em; font-weight: 700; }
.h2 { font-size: clamp(32px, 4vw, 50px); font-weight: 700; }
.h3 { font-size: clamp(22px, 2vw, 26px); font-weight: 700; line-height: 1.2; }
.lede { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.55; color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--ink-2); }
.accent { color: var(--teal); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- buttons & chips ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 13px 24px; border-radius: 12px; font-weight: 600; font-size: 16px; font-family: inherit; border: 0; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 8px 20px rgba(10, 79, 158, 0.22); }
.btn--primary:hover { color: #fff; box-shadow: 0 12px 26px rgba(10, 79, 158, 0.28); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { color: #fff; }
.btn--ghost { background: var(--card); color: var(--ink); border: 1.5px solid var(--line-strong); }
.btn--ghost:hover { color: var(--ink); border-color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-block; padding: 7px 14px; border-radius: 999px; font-size: 14px; font-weight: 600; background: var(--tint); color: var(--ink); }
.chip--teal { background: var(--teal-soft); color: var(--teal-ink); }
.chip--blue { background: var(--blue-soft); color: var(--blue-ink); }
.chip--ink { background: var(--ink); color: #fff; }
.chip--outline { background: transparent; border: 1px solid var(--line-strong); font-weight: 500; font-size: 15px; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(245, 247, 245, 0.92); backdrop-filter: saturate(1.4) blur(8px); -webkit-backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }
.logo img { height: 40px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { color: var(--ink); font-weight: 500; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--teal); }
.nav .btn { color: #fff; padding: 11px 20px; min-height: 44px; font-size: 15px; }
.nav-toggle { display: none; background: none; border: 1.5px solid var(--line-strong); border-radius: 10px; width: 46px; height: 46px; align-items: center; justify-content: center; cursor: pointer; color: var(--ink); }

@media (max-width: 1100px) {
  .nav-toggle { display: inline-flex; }
  .nav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px; display: none; }
  .nav.is-open { display: flex; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .nav .btn { margin-top: 16px; border-bottom: 0; }
}

/* ---------- sections ---------- */
.section { padding-block: var(--section); }
.section--tight { padding-block: calc(var(--section) * 0.6); }
.section-head { display: grid; gap: 16px; max-width: 820px; margin-bottom: clamp(36px, 4vw, 52px); }
.section-head--split { max-width: none; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); align-items: end; gap: 48px; }
@media (max-width: 860px) { .section-head--split { grid-template-columns: 1fr; gap: 16px; } }

.night { background-color: var(--night); color: #fff; background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px); background-size: 40px 40px; }
.night .muted, .night .lede { color: var(--night-text); }

/* ---------- cards ---------- */
.card { color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 2.6vw, 36px); display: flex; flex-direction: column; gap: 14px; }
.card--tint { background: var(--tint); border-color: transparent; }
.card--night { background: var(--night); color: #fff; border-color: transparent; }
.card--night .muted { color: var(--night-text); }
.card--grad { background: linear-gradient(135deg, #0E9AA7, #0A4F9E); color: #fff; border-color: transparent; }
.card--grad .muted { color: #E3F1F7; }
.card p { font-size: 16px; line-height: 1.6; }
.night .card:not(.card--night):not(.card--grad) .muted { color: var(--ink-2); }
.night .card:not(.card--night):not(.card--grad) .label { color: var(--ink-3); }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }
@media (max-width: 1080px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } .span-2 { grid-column: auto; } }

.ticks { display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 28px; font-size: 16px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 5px; width: 17px; height: 17px; border-radius: 50%; background: var(--teal-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230B6E8A' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 11px no-repeat; }
.night .ticks li::before, .card--night .ticks li::before { background-color: rgba(127, 211, 218, 0.16); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237FD3DA' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E"); }
.ticks--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 24px; }
@media (max-width: 520px) { .ticks--2 { grid-template-columns: 1fr; } }

.label { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.card--night .label, .night .label { color: var(--night-mute); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(56px, 7vw, 96px) 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: end; }
.hero-copy { display: grid; gap: 26px; }
.hero-aside { display: grid; gap: 22px; align-content: end; padding-bottom: 8px; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; } }

.authorised { display: inline-flex; align-items: center; gap: 10px; }
.authorised::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #0E9AA7; box-shadow: 0 0 0 4px rgba(14, 154, 167, 0.18); }

/* waveform stage */
.stage { position: relative; margin-top: clamp(40px, 5vw, 64px); background: var(--card); border: 1px solid var(--line); border-radius: 26px; min-height: 340px; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) 400px; align-items: center; gap: 24px; padding: 32px; }
.wave { display: flex; align-items: center; justify-content: center; gap: clamp(3px, 0.42vw, 6px); height: 260px; min-width: 0; overflow: hidden; }
.wave span { flex: 0 0 auto; width: clamp(3px, 0.42vw, 6px); border-radius: 6px; background: var(--grad); background-size: 100% 100%; transform-origin: center; }
@media (prefers-reduced-motion: no-preference) { .wave span { animation: talk 1.6s ease-in-out infinite; animation-delay: calc(var(--i) * -0.07s); } }
@keyframes talk { 0%, 100% { transform: scaleY(1); } 50% { transform: scaleY(0.55); } }
.stage-stats { position: absolute; left: 32px; bottom: 26px; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 14px; background: rgba(255,255,255,0.92); padding: 10px 14px; border-radius: 12px; border: 1px solid var(--line); }
.stage-stats strong { color: var(--ink); }
.stage-stats span span { color: var(--ink-3); }
@media (max-width: 960px) {
  .stage { grid-template-columns: 1fr; padding: 20px; }
  .wave { height: 150px; }
  .stage-stats { position: static; order: 3; }
}

.call { background: var(--night); color: #fff; border-radius: 20px; padding: 22px 24px; display: grid; gap: 14px; box-shadow: 0 20px 44px rgba(15, 29, 43, 0.22); }
.call-top { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; font-weight: 600; flex-wrap: wrap; }
.live { color: #4BD69A; }
.turn { font-size: 15px; line-height: 1.5; color: var(--night-text); }
.turn b { display: block; font-family: var(--f-mono); font-size: 11px; font-weight: 500; letter-spacing: 0.1em; color: var(--night-mute); }
.turn--agent { color: #fff; }
.turn--agent b { color: var(--night-accent); }
.done { font-size: 13px; color: #4BD69A; font-weight: 600; }

/* chat */
.chat { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 18px; display: flex; flex-direction: column; gap: 10px; font-size: 15px; line-height: 1.45; box-shadow: 0 18px 40px rgba(15, 29, 43, 0.08); }
.chat-head { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; font-weight: 600; font-size: 14px; }
.chat-head::before { content: ""; width: 26px; height: 26px; border-radius: 50%; background: #25D366; flex: none; }
.chat-head small { font-weight: 500; color: var(--ink-3); }
.msg { max-width: 85%; padding: 9px 13px; border-radius: 14px; }
.msg--in { align-self: flex-end; background: var(--ink); color: #fff; border-bottom-right-radius: 4px; }
.msg--out { align-self: flex-start; background: var(--tint); border-bottom-left-radius: 4px; }
.chat-note { align-self: flex-start; font-size: 13px; font-weight: 600; color: var(--ok); }

/* trust strip */
.trust { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 32px; padding: 22px 28px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; }
.trust-lead { display: flex; align-items: center; gap: 16px; }
.trust-lead img { height: 44px; width: auto; }
.trust p { font-size: 15px; }

/* channels row */
.channels { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 22px; font-family: var(--f-display); font-weight: 700; font-size: clamp(24px, 3vw, 36px); letter-spacing: -0.02em; }
.channels .sep { color: #B7C3CB; font-weight: 400; }
.channels .label { font-family: var(--f-mono); font-weight: 500; font-size: 13px; letter-spacing: 0.12em; margin-right: 8px; }

/* timeline (workflow) */
.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 2px solid var(--ink); counter-reset: step; }
.flow li { padding: 24px 22px 0 0; display: grid; gap: 8px; align-content: start; position: relative; }
.flow li::before { content: ""; position: absolute; top: -7px; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--paper); border: 2px solid var(--ink); }
.flow .when { font-family: var(--f-mono); font-size: 13px; color: var(--teal); font-weight: 600; }
.flow strong { font-size: 18px; line-height: 1.3; }
.flow span:last-child { font-size: 15px; color: var(--ink-2); }
@media (max-width: 900px) { .flow { grid-template-columns: 1fr; border-top: 0; border-left: 2px solid var(--ink); } .flow li { padding: 0 0 26px 24px; } .flow li::before { top: 4px; left: -7px; } }

/* memory timeline */
.memory { display: grid; border-left: 2px solid var(--line-strong); padding-left: 28px; }
.memory li { padding: 14px 0; display: grid; gap: 4px; position: relative; }
.memory li::before { content: ""; position: absolute; left: -35px; top: 20px; width: 12px; height: 12px; border-radius: 50%; background: var(--card); border: 2px solid var(--teal); }
.memory .label { color: var(--ink-3); }
.memory li:last-child .label { color: var(--teal); }

/* testing */
.equation { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; gap: 14px; align-items: stretch; }
.equation .card { gap: 8px; padding: 20px; }
.equation .card p { font-size: 15px; }
.total { background: var(--night); color: #fff; border-radius: var(--radius); padding: 20px 24px; display: grid; align-content: center; gap: 2px; min-width: 200px; }
.total strong { font-family: var(--f-display); font-size: 56px; line-height: 1; }
.total span { color: var(--night-text); font-size: 14px; }
@media (max-width: 1080px) { .equation { grid-template-columns: repeat(2, minmax(0, 1fr)); } .total { grid-column: span 2; } }
@media (max-width: 520px) { .equation { grid-template-columns: 1fr; } .total { grid-column: auto; } }

.big-number { font-family: var(--f-display); font-weight: 700; font-size: clamp(96px, 12vw, 160px); line-height: 0.9; letter-spacing: -0.04em; }

.report-row { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; }
.report-row em { font-style: normal; color: var(--ok); font-weight: 600; text-align: right; }
.score { display: flex; flex-wrap: wrap; gap: 28px; align-items: baseline; }
.score strong { font-family: var(--f-display); font-size: 48px; line-height: 1; }
.score .before { color: #8A98A5; }
.score .after { color: var(--teal); }

/* steps */
.steps { display: grid; gap: 22px; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 36px 1fr; gap: 14px; }
.steps li::before { counter-increment: s; content: counter(s); font-family: var(--f-display); font-weight: 700; font-size: 22px; color: var(--teal); line-height: 1.3; }
.steps strong { font-size: 18px; display: block; }
.steps span { color: var(--ink-2); font-size: 16px; }

/* numbered advantages (real sequence 01–04 from the deck) */
.num { font-family: var(--f-mono); font-size: 20px; font-weight: 600; color: var(--teal); }
.card--grad .num { color: #DDF6F8; }

/* page hero (inner pages) */
.page-hero { padding-block: clamp(56px, 7vw, 96px) clamp(40px, 5vw, 64px); }
.page-hero .wrap { display: grid; gap: 22px; }
.crumbs { font-size: 14px; color: var(--ink-3); }
.crumbs a { color: var(--ink-3); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* CTA band */
.cta { border-radius: 26px; padding: clamp(32px, 5vw, 64px); display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); background: var(--card); border: 1px solid var(--line); }
@media (max-width: 900px) { .cta { grid-template-columns: 1fr; } }

/* forms */
.form { background: var(--tint); border-radius: var(--radius); padding: clamp(22px, 3vw, 32px); display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 14px; font-weight: 600; }
.field input, .field textarea, .field select { width: 100%; padding: 13px 14px; border-radius: 10px; border: 1px solid var(--line-strong); background: #fff; font: inherit; font-size: 16px; color: var(--ink); }
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: 3px solid rgba(14, 154, 167, 0.35); border-color: #0E9AA7; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.form-status { font-size: 15px; font-weight: 600; min-height: 1.5em; }
.form-status.is-ok { color: var(--ok); }
.form-status.is-err { color: #B42318; }
.form small { color: var(--ink-3); font-size: 13px; }

/* FAQ */
.faq details { border-top: 1px solid var(--line-strong); padding: 18px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line-strong); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--f-display); color: var(--teal); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--ink-2); }

/* prose (privacy etc.) */
.prose { max-width: 72ch; display: grid; gap: 16px; }
.prose h2 { font-size: 26px; margin-top: 18px; }
.prose ul { list-style: disc; padding-left: 22px; display: grid; gap: 6px; }

/* footer */
.site-footer { background: var(--night); color: var(--night-text); padding-block: 56px 32px; font-size: 15px; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 40px; }
.foot-grid img { height: 38px; width: auto; }
.foot-grid h2 { font-family: var(--f-body); font-size: 15px; color: #fff; letter-spacing: 0; margin-bottom: 12px; }
.foot-grid ul { display: grid; gap: 8px; }
.foot-grid a { color: var(--night-text); }
.foot-grid a:hover { color: #fff; }
.foot-base { margin-top: 44px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; color: #8FA3B3; }
@media (max-width: 860px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .foot-grid > :first-child { grid-column: 1 / -1; } }

/* utilities */
.stack { display: grid; gap: 18px; }
.stack-lg { display: grid; gap: 26px; }
.mt-0 { margin-top: 0; }
.center { text-align: center; }

/* ---------- pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
@media (max-width: 1080px) { .plans { grid-template-columns: 1fr; max-width: 640px; } }
.plan { background: var(--card); color: var(--ink); border-radius: 22px; padding: clamp(26px, 2.6vw, 36px); display: flex; flex-direction: column; gap: 20px; border: 1px solid var(--line); }
.plan-head { display: grid; gap: 8px; }
.plan-tier { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.plan h3 { font-size: 28px; }
.plan-for { color: var(--ink-2); font-size: 16px; line-height: 1.5; }
.price-block { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 18px 0; border-block: 1px solid var(--line); }
.price { display: grid; gap: 2px; align-content: start; }
.price .label { font-size: 11px; }
.price-now { font-family: var(--f-display); font-weight: 700; font-size: clamp(30px, 2.8vw, 38px); line-height: 1.1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.price-now small { font-family: var(--f-body); font-size: 15px; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.price-was { font-size: 15px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.price-was s { text-decoration-thickness: 1.5px; }
.offer { display: inline-flex; align-self: flex-start; padding: 5px 10px; border-radius: 999px; background: var(--teal-soft); color: var(--teal-ink); font-size: 13px; font-weight: 700; }
.usage { background: var(--tint); border-radius: 12px; padding: 14px 16px; font-size: 15px; line-height: 1.5; }
.usage strong { font-variant-numeric: tabular-nums; }
.plan .ticks li { font-size: 15px; }
.plan .ticks li::before { background-color: var(--teal-soft); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230B6E8A' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E"); }
.plan .btn { margin-top: auto; }
.plan-note { font-size: 14px; color: var(--ink-3); }

.value-props { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: clamp(36px, 4vw, 52px); }
.value-props div { display: grid; gap: 4px; }
.value-props strong { color: #fff; font-size: 17px; }
.value-props span { color: var(--night-text); font-size: 15px; }
@media (max-width: 860px) { .value-props { grid-template-columns: 1fr; } }

/* usage estimator */
.estimator { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 48px); align-items: start; }
@media (max-width: 900px) { .estimator { grid-template-columns: 1fr; } }
.range { display: grid; gap: 8px; }
.range label { display: flex; justify-content: space-between; gap: 12px; font-weight: 600; }
.range output { font-family: var(--f-display); font-variant-numeric: tabular-nums; color: var(--teal); }
.range input[type="range"] { width: 100%; accent-color: #0E9AA7; min-height: 32px; }
.range small { color: var(--ink-3); font-size: 13px; }
.est-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.est-table th, .est-table td { text-align: left; padding: 14px 10px; border-bottom: 1px solid var(--line); font-size: 15px; vertical-align: top; }
.est-table th { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; }
.est-table td:last-child, .est-table th:last-child { text-align: right; }
.est-table .est-total { font-family: var(--f-display); font-weight: 700; font-size: 20px; }
.est-table .na { color: var(--ink-3); }
.est-table tr.is-best td { background: var(--teal-soft); }
.est-table tr.is-best td:first-child { border-radius: 10px 0 0 10px; }
.est-table tr.is-best td:last-child { border-radius: 0 10px 10px 0; }
.best-tag { display: inline-block; margin-left: 8px; padding: 2px 8px; border-radius: 999px; background: var(--teal); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.04em; vertical-align: 2px; }

/* additional services */
.svc { display: flex; flex-direction: column; gap: 16px; }
.svc-prices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 16px 0; border-block: 1px solid var(--line); }
.svc-prices .price-now { font-size: 28px; white-space: nowrap; }
.svc .btn { margin-top: auto; align-self: flex-start; }