/* AI CallFlow — public website. Loaded after base.css and app.css (the phone mockup lives there). */

body.site { background: #fff; color: var(--text); font-size: 16px; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 860px; }
.site main { display: block; }

/* ============================================================ header */
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid transparent; transition: background .25s, box-shadow .25s, border-color .25s; }
.site-header .container { display: flex; align-items: center; gap: 22px; height: 72px; }
.site-header .brand-name { font-size: 18px; }
.site-nav { display: flex; gap: 2px; margin-left: 10px; }
.site-nav a { padding: 8px 12px; border-radius: 9px; font-size: 14.5px; font-weight: 600; color: var(--text-2); transition: color .15s, background .15s; }
.site-nav a:hover, .site-nav a.is-active { color: var(--text); background: var(--surface-3); }
.site-header .actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.site-header .login { padding: 8px 10px; font-size: 14.5px; font-weight: 600; color: var(--text-2); }
.site-header .login:hover { color: var(--text); }
.site-header.solid { background: rgba(255, 255, 255, .88); backdrop-filter: saturate(1.6) blur(14px); border-bottom-color: var(--border); }
.site-header.on-dark { position: fixed; left: 0; right: 0; background: transparent; }
.site-header.on-dark:not(.is-scrolled) .brand, .site-header.on-dark:not(.is-scrolled) .login { color: #fff; }
.site-header.on-dark:not(.is-scrolled) .brand-name span { color: var(--brand-2); }
.site-header.on-dark:not(.is-scrolled) .site-nav a { color: rgba(226, 232, 255, .78); }
.site-header.on-dark:not(.is-scrolled) .site-nav a:hover,
.site-header.on-dark:not(.is-scrolled) .site-nav a.is-active { color: #fff; background: rgba(255, 255, 255, .1); }
.site-header.on-dark:not(.is-scrolled) .nav-burger { color: #fff; }
.site-header.is-scrolled { background: rgba(255, 255, 255, .9); backdrop-filter: saturate(1.6) blur(14px); border-bottom-color: var(--border); box-shadow: 0 10px 30px -20px rgba(16, 24, 48, .3); }
.nav-burger { display: none; }
@media (max-width: 980px) {
  .site-nav { display: none; }
  .nav-burger { display: inline-flex; }
  .site-header .login, .site-header .lang-switch { display: none; }
}
@media (max-width: 520px) { .site-header .actions .btn-primary { display: none; } }
.mobile-nav { position: fixed; top: 72px; left: 0; right: 0; z-index: 49; display: none; flex-direction: column; gap: 2px; padding: 10px 24px 22px; background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--sh-3); }
.mobile-nav.is-open { display: flex; }
.mobile-nav a { padding: 13px 4px; font-weight: 650; color: var(--text); border-bottom: 1px solid var(--border); }
.mobile-nav .btn { margin-top: 12px; border-bottom: 0; }

.lang-switch { display: inline-flex; gap: 2px; padding: 3px; border-radius: 999px; background: var(--surface-3); }
.lang-switch a { padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; color: var(--muted); }
.lang-switch a.is-active { background: #fff; color: var(--text); box-shadow: var(--sh-1); }
.on-dark:not(.is-scrolled) .lang-switch { background: rgba(255, 255, 255, .08); }
.on-dark:not(.is-scrolled) .lang-switch a { color: rgba(226, 232, 255, .7); }
.on-dark:not(.is-scrolled) .lang-switch a.is-active { background: rgba(255, 255, 255, .18); color: #fff; box-shadow: none; }

/* ============================================================ dark hero surfaces */
.hero, .page-hero, .section-dark, .cta-band { --glow-1: color-mix(in srgb, var(--brand) 55%, transparent); --glow-2: color-mix(in srgb, var(--brand-2) 40%, transparent); }
.hero { position: relative; overflow: hidden; isolation: isolate; padding: 148px 0 104px; background: #02150F; color: #fff; }
.hero::before, .page-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px); background-size: 56px 56px; -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 80%); mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 80%); }
.glow { position: absolute; z-index: -1; border-radius: 50%; filter: blur(70px); opacity: .7; pointer-events: none; }
.glow-1 { width: 520px; height: 520px; top: -160px; left: -120px; background: var(--glow-1); animation: drift 14s ease-in-out infinite; }
.glow-2 { width: 460px; height: 460px; top: 80px; right: -140px; background: var(--glow-2); animation: drift 18s ease-in-out infinite reverse; }
.glow-3 { width: 380px; height: 380px; bottom: -220px; left: 40%; background: color-mix(in srgb, #059669 40%, transparent); animation: drift 16s ease-in-out infinite; }
@keyframes drift { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(40px, 30px) scale(1.08); } }

.hero .container { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 56px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; padding: 5px 14px 5px 5px; border-radius: 999px; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .12); font-size: 13px; font-weight: 600; color: #CBEFDD; }
.hero-badge .tag { padding: 3px 10px; border-radius: 999px; background: var(--grad); color: #fff; font-size: 11px; font-weight: 800; letter-spacing: .03em; }
.hero h1 { margin-top: 22px; color: #fff; font-size: clamp(38px, 5.2vw, 64px); line-height: 1.04; letter-spacing: -.038em; font-weight: 800; }
.hero h1 em, .page-hero h1 em, .gradient-text { font-style: normal; background: linear-gradient(90deg, #6EE7B7 0%, #86EFAC 40%, #5EEAD4 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin-top: 22px; max-width: 580px; font-size: 18px; line-height: 1.7; color: rgba(226, 232, 255, .76); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-trust { display: flex; align-items: center; gap: 10px; margin-top: 24px; font-size: 13.5px; color: rgba(226, 232, 255, .62); }
.hero-trust .icon { color: #5EEAD4; }
.hero-visual { position: relative; }
.hero-visual .phone { max-width: 350px; transform: rotate(-2.5deg); box-shadow: 0 60px 120px -40px rgba(0, 0, 0, .8), 0 0 0 1.5px rgba(255, 255, 255, .08) inset; }
.hero-visual .phone-screen { height: 600px; }
.float-card { position: absolute; z-index: 2; display: flex; align-items: center; gap: 10px; padding: 10px 14px 10px 10px; border-radius: 14px; background: rgba(255, 255, 255, .97); color: var(--text); font-size: 13px; font-weight: 700; box-shadow: 0 22px 44px -14px rgba(0, 0, 0, .5); animation: float 6s ease-in-out infinite; white-space: nowrap; }
.float-card small { display: block; font-size: 11.5px; font-weight: 500; color: var(--muted); }
.float-card .icon-tile { width: 32px; height: 32px; border-radius: 9px; }
.float-card.c1 { top: 10%; left: -9%; }
.float-card.c2 { top: 44%; right: -7%; animation-delay: -2s; }
.float-card.c3 { bottom: 9%; left: -4%; animation-delay: -4s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@media (max-width: 1040px) {
  .hero { padding: 128px 0 80px; }
  .hero .container { grid-template-columns: minmax(0, 1fr); }
  .hero-visual { max-width: 400px; margin: 16px auto 0; width: 100%; }
  .float-card.c1 { left: -4%; } .float-card.c2 { right: -3%; } .float-card.c3 { left: 0; }
}
@media (max-width: 480px) { .float-card { display: none; } }

/* ============================================================ logo strip */
.logos { padding: 34px 0; border-bottom: 1px solid var(--border); }
.logos p { text-align: center; font-size: 12.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.logos-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 22px 48px; margin-top: 18px; }
.logos-row img { height: 30px; width: auto; filter: grayscale(1); opacity: .55; transition: filter .2s, opacity .2s; }
.logos-row a:hover img { filter: none; opacity: 1; }
.logos-row .logo-text { font-size: 18px; font-weight: 800; letter-spacing: -.02em; color: var(--muted-2); }

/* ============================================================ sections */
.section { position: relative; padding: 104px 0; }
.section-tight { padding: 72px 0; }
.section-alt { background: #F6F7FB; }
.section-dark { position: relative; overflow: hidden; isolation: isolate; background: #02150F; color: #fff; }
.section-head { max-width: 740px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--brand); }
.eyebrow::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.section-dark .eyebrow { color: #6EE7B7; }
.section-head h2 { margin-top: 12px; font-size: clamp(30px, 3.6vw, 46px); line-height: 1.1; letter-spacing: -.032em; font-weight: 800; }
.section-head p { margin-top: 16px; font-size: 17.5px; line-height: 1.7; color: var(--muted); }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(226, 232, 255, .7); }
@media (max-width: 720px) { .section { padding: 72px 0; } .section-head { margin-bottom: 40px; } }

.icon-wrap { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; flex: none; background: var(--brand-soft); color: var(--brand); }
.icon-wrap .icon { width: 22px; height: 22px; }

/* problems */
.problem-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.problem { padding: 26px; border-radius: 20px; background: #fff; border: 1px solid var(--border); box-shadow: var(--sh-1); transition: transform .25s var(--ease), box-shadow .25s; }
.problem:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.problem .icon-wrap { background: var(--red-bg); color: var(--red); }
.problem h3 { margin-top: 18px; font-size: 17px; }
.problem p { margin-top: 8px; font-size: 14.5px; line-height: 1.65; color: var(--muted); }
@media (max-width: 1040px) { .problem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .problem-grid { grid-template-columns: minmax(0, 1fr); } }

/* flow pipeline */
.flow { position: relative; display: grid; grid-template-columns: repeat(var(--steps, 5), minmax(0, 1fr)); gap: 18px; }
.flow::before { content: ""; position: absolute; top: 34px; left: 9%; right: 9%; height: 2px; background: linear-gradient(90deg, var(--brand), var(--brand-2)); opacity: .3; }
.flow-dot { position: absolute; top: 30px; left: 9%; width: 10px; height: 10px; border-radius: 50%; background: var(--brand-2); box-shadow: 0 0 0 6px color-mix(in srgb, var(--brand-2) 22%, transparent); animation: flow-run 7s linear infinite; }
@keyframes flow-run { 0% { left: 9%; opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { left: 91%; opacity: 0; } }
.flow-step { position: relative; text-align: center; padding: 0 6px; }
.flow-icon { position: relative; z-index: 1; width: 68px; height: 68px; margin: 0 auto; border-radius: 22px; display: grid; place-items: center; background: #fff; border: 1px solid var(--border); box-shadow: var(--sh-2); color: var(--brand); }
.flow-icon .icon { width: 26px; height: 26px; }
.flow-num { position: absolute; top: -8px; left: calc(50% + 22px); z-index: 2; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; background: var(--grad); color: #fff; font-size: 11px; font-weight: 800; }
.flow-step h3 { margin-top: 18px; font-size: 15.5px; }
.flow-step p { margin-top: 6px; font-size: 13.5px; line-height: 1.6; color: var(--muted); }
@media (max-width: 900px) {
  .flow { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .flow::before, .flow-dot { display: none; }
  .flow-step { display: grid; grid-template-columns: 68px minmax(0, 1fr); gap: 16px; text-align: left; align-items: center; }
  .flow-icon { margin: 0; }
  .flow-num { left: 52px; }
  .flow-step h3 { margin-top: 0; }
}

/* flow showcase: an order card changing state */
.showcase { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; margin-top: 56px; }
@media (max-width: 900px) { .showcase { grid-template-columns: minmax(0, 1fr); } }
.show-card { padding: 22px; border-radius: 20px; background: #fff; border: 1px solid var(--border); box-shadow: var(--sh-2); }
.show-card h4 { font-size: 13px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--muted-2); }
.show-row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.show-row:last-child { border-bottom: 0; }
.show-row .order-no { font-size: 13px; }
.show-row .badge { margin-left: auto; }

/* features */
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.feature { position: relative; padding: 26px; border-radius: 20px; background: #fff; border: 1px solid var(--border); transition: transform .25s var(--ease), box-shadow .25s, border-color .25s; }
.feature:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: var(--brand-line); }
.feature h3 { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 18px; font-size: 16.5px; }
.feature p { margin-top: 8px; font-size: 14.5px; line-height: 1.65; color: var(--muted); }
.feature.is-core { background: var(--grad-soft); border-color: var(--brand-line); }
.feature.is-core .icon-wrap { background: var(--grad); color: #fff; }
.feature.is-core h3 { font-size: 19px; }
@media (max-width: 1040px) { .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: minmax(0, 1fr); } }

/* steps (dark) */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.step { position: relative; padding: 30px; border-radius: 22px; background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .1); backdrop-filter: blur(6px); }
.step-num { font-size: 58px; font-weight: 800; letter-spacing: -.05em; line-height: 1; background: linear-gradient(135deg, #6EE7B7, #5EEAD4); -webkit-background-clip: text; background-clip: text; color: transparent; }
.step .icon-wrap { position: absolute; top: 30px; right: 30px; background: rgba(255, 255, 255, .08); color: #A7F3D0; }
.step h3 { margin-top: 16px; color: #fff; font-size: 19px; }
.step p { margin-top: 8px; font-size: 15px; line-height: 1.65; color: rgba(226, 232, 255, .7); }
@media (max-width: 900px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* use cases */
.usecase-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.usecase { display: flex; flex-direction: column; gap: 12px; padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.usecase h3 { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 15.5px; }
.usecase p { font-size: 14px; line-height: 1.6; color: var(--muted); }
@media (max-width: 1100px) { .usecase-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 720px) { .usecase-grid { grid-template-columns: minmax(0, 1fr); } }

/* stats band */
.stats-band { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; border-radius: 22px; background: var(--border); border: 1px solid var(--border); }
.stats-band > div { padding: 30px 26px; background: #fff; }
.stats-band strong { display: block; font-size: 36px; font-weight: 800; letter-spacing: -.035em; line-height: 1.1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats-band span { display: block; margin-top: 6px; font-size: 14.5px; color: var(--muted); }
@media (max-width: 900px) { .stats-band { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* developers */
.dev { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 52px; align-items: center; }
@media (max-width: 980px) { .dev { grid-template-columns: minmax(0, 1fr); } }
.dev .code-block { box-shadow: 0 40px 80px -40px rgba(11, 16, 38, .7); }
.code-tabs { display: flex; gap: 4px; }
.code-tabs button { padding: 5px 11px; border-radius: 7px; font-size: 12.5px; font-weight: 700; color: #8FB3A3; }
.code-tabs button:hover { color: #fff; }
.code-tabs button.is-active { background: rgba(255, 255, 255, .09); color: #fff; }
.code-dots { display: flex; gap: 6px; }
.code-dots i { width: 10px; height: 10px; border-radius: 50%; background: #12402F; }
.check-list { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-direction: column; gap: 12px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--text-2); }
.check-list .icon { flex: none; width: 20px; height: 20px; margin-top: 2px; color: var(--green); }
.int-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.int-chip { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: 12px; background: #fff; border: 1px solid var(--border); font-size: 14px; font-weight: 650; color: var(--text); box-shadow: var(--sh-1); }
.int-chip .icon { color: var(--brand); }

/* pricing */
.billing-toggle { display: inline-flex; gap: 2px; padding: 4px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--border); margin: 0 auto 36px; }
.billing-toggle button { padding: 8px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 700; color: var(--muted); }
.billing-toggle button.is-active { background: #fff; color: var(--text); box-shadow: var(--sh-1); }
.billing-toggle .save { margin-left: 6px; font-size: 11px; color: var(--green); }
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(208px, 1fr)); gap: 16px; align-items: stretch; }
.price-card { position: relative; display: flex; flex-direction: column; padding: 26px 22px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: var(--sh-1); }
.price-card.featured { background: #04150F; color: #fff; border-color: #04150F; box-shadow: 0 34px 70px -28px color-mix(in srgb, var(--brand) 70%, transparent); }
@media (min-width: 1000px) { .price-card.featured { transform: translateY(-10px); } }
.price-card .ribbon { position: absolute; top: 20px; right: 20px; }
.price-card h3 { font-size: 18px; }
.price-card.featured h3 { color: #fff; }
.price-card .desc { margin-top: 6px; min-height: 44px; font-size: 14px; line-height: 1.55; color: var(--muted); }
.price-card.featured .desc { color: rgba(226, 232, 255, .65); }
.price-card .amount { margin-top: 18px; font-size: 33px; font-weight: 800; letter-spacing: -.035em; line-height: 1.1; white-space: nowrap; }
.price-card .amount small { font-size: 14px; font-weight: 600; letter-spacing: 0; color: var(--muted); }
.price-card.featured .amount small { color: rgba(226, 232, 255, .6); }
.price-card .credits { margin-top: 8px; font-size: 14px; font-weight: 700; color: var(--brand); }
.price-card.featured .credits { color: #6EE7B7; }
.price-card ul { list-style: none; flex: 1; display: flex; flex-direction: column; gap: 10px; margin: 22px 0 26px; padding: 0; font-size: 14.5px; }
.price-card li { display: flex; gap: 10px; align-items: flex-start; }
.price-card li .icon { flex: none; width: 17px; height: 17px; margin-top: 3px; color: var(--green); }
.price-card.featured li .icon { color: #5EEAD4; }
.price-card.featured .btn:not(.btn-primary) { --btn-bg: rgba(255, 255, 255, .08); --btn-fg: #fff; --btn-bd: rgba(255, 255, 255, .2); }
.price-note { margin-top: 26px; text-align: center; font-size: 14px; color: var(--muted); }

.packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.pack { position: relative; padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.pack.popular { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand) inset; }
.pack strong { display: block; font-size: 26px; font-weight: 800; letter-spacing: -.03em; }
.pack .bonus { font-size: 13px; font-weight: 700; color: var(--green); }
.pack .price { margin-top: 10px; font-size: 17px; font-weight: 750; }
.pack .rate { font-size: 13px; color: var(--muted); }

.calc { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 0; overflow: hidden; border-radius: 22px; border: 1px solid var(--border); background: #fff; box-shadow: var(--sh-2); }
@media (max-width: 860px) { .calc { grid-template-columns: minmax(0, 1fr); } }
.calc-inputs { padding: 30px; display: flex; flex-direction: column; gap: 22px; }
.calc-inputs label { display: flex; justify-content: space-between; font-weight: 650; font-size: 14.5px; }
.calc-inputs output { font-weight: 800; color: var(--brand); }
.calc input[type=range] { width: 100%; accent-color: var(--brand); }
.calc-result { padding: 30px; background: #04150F; color: #fff; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.calc-result .big { font-size: 40px; font-weight: 800; letter-spacing: -.035em; }
.calc-result small { color: rgba(226, 232, 255, .65); font-size: 13.5px; }

/* testimonials */
.testimonial-grid { columns: 3 300px; column-gap: 18px; }
.testimonial { break-inside: avoid; margin-bottom: 18px; padding: 24px; border-radius: 20px; background: #fff; border: 1px solid var(--border); }
.stars { display: flex; gap: 2px; color: #F5A524; }
.stars .icon { width: 16px; height: 16px; fill: currentColor; }
.testimonial blockquote { margin: 14px 0 18px; font-size: 15.5px; line-height: 1.7; color: var(--text); }
.who { display: flex; align-items: center; gap: 12px; }
.who strong { display: block; font-size: 14.5px; }
.who span { font-size: 13px; color: var(--muted); }

/* faq */
.faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq { overflow: hidden; border-radius: 16px; background: #fff; border: 1px solid var(--border); transition: border-color .2s, box-shadow .2s; }
.faq[open] { border-color: var(--brand-line); box-shadow: var(--sh-2); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; list-style: none; cursor: pointer; font-size: 16px; font-weight: 700; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon { flex: none; color: var(--muted); transition: transform .25s var(--ease), color .2s; }
.faq[open] summary .icon { transform: rotate(45deg); color: var(--brand); }
.faq .answer { padding: 0 22px 22px; font-size: 15px; line-height: 1.75; color: var(--muted); }

/* call to action */
.cta-band { position: relative; overflow: hidden; isolation: isolate; padding: 72px 40px; border-radius: 30px; background: #04150F; color: #fff; text-align: center; }
.cta-band h2 { color: #fff; font-size: clamp(30px, 3.8vw, 48px); letter-spacing: -.035em; line-height: 1.1; }
.cta-band p { margin: 14px auto 0; max-width: 560px; font-size: 17.5px; color: rgba(226, 232, 255, .72); }
.cta-band .hero-ctas { justify-content: center; }

/* ============================================================ footer */
.site-footer { padding: 76px 0 32px; background: #02150F; color: rgba(214, 238, 226, .68); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr)); gap: 40px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .footer-grid > :first-child { grid-column: span 2; } }
.site-footer .brand { color: #fff; }
.site-footer .brand-name span { color: var(--brand-2); }
.site-footer .about { margin-top: 16px; max-width: 360px; font-size: 14.5px; line-height: 1.75; }
.site-footer h4 { color: #fff; font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; }
.site-footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; margin: 18px 0 0; padding: 0; font-size: 14.5px; }
.site-footer a { color: rgba(214, 238, 226, .68); }
.site-footer a:hover { color: #fff; }
.socials { display: flex; gap: 8px; margin-top: 22px; }
.socials a { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .08); }
.socials a:hover { background: rgba(255, 255, 255, .12); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 56px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .08); font-size: 13.5px; }

/* ============================================================ inner pages */
.page-hero { position: relative; overflow: hidden; isolation: isolate; padding: 144px 0 76px; background: #02150F; color: #fff; text-align: center; }
.page-hero h1 { color: #fff; font-size: clamp(34px, 4.6vw, 54px); letter-spacing: -.035em; line-height: 1.08; }
.page-hero p { max-width: 660px; margin: 16px auto 0; font-size: 17.5px; line-height: 1.7; color: rgba(226, 232, 255, .72); }
.page-hero .btn { margin-top: 20px; }

/* docs */
.docs { display: grid; grid-template-columns: 250px minmax(0, 1fr) 210px; gap: 44px; padding: 40px 0 88px; }
.docs-nav { position: sticky; top: 96px; align-self: start; max-height: calc(100vh - 120px); overflow-y: auto; padding-right: 6px; }
.docs-nav h5 { margin: 22px 0 8px; font-size: 11.5px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.docs-nav h5:first-child { margin-top: 0; }
.docs-nav a { display: block; padding: 6px 10px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--text-2); }
.docs-nav a:hover { background: var(--surface-3); color: var(--text); }
.docs-nav a.is-active { background: var(--brand-soft); color: var(--brand); font-weight: 650; }
.docs-body h1 { font-size: clamp(30px, 3.4vw, 40px); letter-spacing: -.03em; }
.docs-body .lead { margin-top: 12px; font-size: 18px; line-height: 1.7; color: var(--muted); }
.docs-toc { position: sticky; top: 96px; align-self: start; font-size: 13.5px; }
.docs-toc h5 { margin-bottom: 10px; font-size: 11.5px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.docs-toc a { display: block; padding: 5px 0 5px 12px; border-left: 2px solid var(--border); color: var(--muted); }
.docs-toc a:hover { color: var(--text); border-color: var(--brand); }
.docs-pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 52px; padding-top: 26px; border-top: 1px solid var(--border); }
.docs-pager a { flex: 1; max-width: 48%; padding: 16px 18px; border-radius: 14px; border: 1px solid var(--border); color: var(--text); }
.docs-pager a:hover { border-color: var(--brand-line); box-shadow: var(--sh-2); }
.docs-pager small { display: block; font-size: 12px; color: var(--muted); }
.docs-pager .next { margin-left: auto; text-align: right; }
@media (max-width: 1120px) { .docs { grid-template-columns: 220px minmax(0, 1fr); } .docs-toc { display: none; } }
@media (max-width: 800px) { .docs { grid-template-columns: minmax(0, 1fr); } .docs-nav { position: static; max-height: none; } }

/* demo */
.demo-stage { display: grid; grid-template-columns: minmax(0, 1fr) 380px minmax(0, .9fr); gap: 36px; align-items: start; }
@media (max-width: 1120px) { .demo-stage { grid-template-columns: minmax(0, 1fr) 380px; } .demo-side { grid-column: span 2; } }
@media (max-width: 820px) { .demo-stage { grid-template-columns: minmax(0, 1fr); } .demo-side { grid-column: auto; } }
.demo-panel { padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: var(--sh-2); }
.demo-panel h3 { font-size: 17px; }
.demo-tips { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-direction: column; gap: 8px; }
.demo-tips button { width: 100%; text-align: left; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); font-size: 14px; color: var(--text-2); font-family: var(--font-bn); }
.demo-tips button:hover { border-color: var(--brand-line); background: var(--brand-soft); color: var(--brand); }

/* contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 40px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }
.contact-card { display: flex; gap: 14px; align-items: flex-start; padding: 20px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.contact-card strong { display: block; font-size: 15px; }
.contact-card a, .contact-card span { font-size: 14.5px; color: var(--muted); }

/* reveal on scroll */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .float-card, .flow-dot, .glow, .wave i { animation: none !important; }
}