:root {
    --brand: #296368;
    --brand2: #1f4f53;

    /* светлее и “воздушнее”, чем было */
    --bg: #0b1113;
    --bg2: #0f191b;

    --text: rgba(255, 255, 255, .92);
    --muted: rgba(255, 255, 255, .74);
    --muted2: rgba(255, 255, 255, .58);

    --card: rgba(255, 255, 255, .06);
    --card2: rgba(255, 255, 255, .09);
    --stroke: rgba(255, 255, 255, .12);

    --shadow: 0 18px 60px rgba(0, 0, 0, .42);
    --shadow2: 0 14px 44px rgba(0, 0, 0, .28);

    --r: 18px;
    --r2: 26px;

    --container: 1160px;

    /* “экраны больше” */
    --sectionPad: 64px;
}

/* reset */
* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1100px 680px at 12% -10%, rgba(41, 99, 104, .26), transparent 58%),
        radial-gradient(900px 520px at 88% 12%, rgba(41, 99, 104, .18), transparent 60%),
        radial-gradient(900px 600px at 50% 112%, rgba(255, 255, 255, .07), transparent 62%),
        linear-gradient(180deg, #070b0d, var(--bg) 45%, var(--bg));
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none
}

img {
    max-width: 100%;
    display: block
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit
}

button {
    border: 0;
    background: none;
    cursor: pointer
}

p,
h1,
h2,
h3 {
    margin: 0
}

ul,
ol {
    margin: 0;
    padding: 0
}

li {
    list-style: none
}

.s12-container {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
}

/* HEADER */
.s12-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: linear-gradient(180deg, rgba(11, 17, 19, .86), rgba(11, 17, 19, .40));
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.s12-header.is-scrolled {
    background: linear-gradient(180deg, rgba(11, 17, 19, .95), rgba(11, 17, 19, .64));
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.s12-header>.s12-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
}

.s12-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 180px;
}

.s12-brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background:
        radial-gradient(12px 12px at 30% 30%, rgba(255, 255, 255, .18), transparent 60%),
        radial-gradient(18px 18px at 70% 75%, rgba(255, 255, 255, .14), transparent 60%),
        linear-gradient(180deg, rgba(41, 99, 104, .95), rgba(31, 79, 83, .92));
    box-shadow: 0 16px 34px rgba(41, 99, 104, .18);
}

.s12-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.05
}

.s12-brand-name {
    font-weight: 850;
    letter-spacing: .2px;
    font-size: 18px
}

.s12-brand-12 {
    color: var(--brand)
}

.s12-brand-tagline {
    font-size: 12px;
    color: var(--muted2)
}

.s12-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.s12-nav-link {
    font-size: 13px;
    color: rgba(255, 255, 255, .80);
    padding: 10px 10px;
    border-radius: 12px;
    transition: background .2s ease, color .2s ease;
}

.s12-nav-link:hover {
    background: rgba(255, 255, 255, .06);
    color: rgba(255, 255, 255, .92);
}

.s12-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: flex-end;
    min-width: 220px;
}

/* Buttons */
.s12-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .06);
    color: rgba(255, 255, 255, .92);
    box-shadow: 0 10px 26px rgba(0, 0, 0, .24);
    transition: transform .15s ease, background .2s ease, border-color .2s ease;
    white-space: nowrap;
}

.s12-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, .09);
    border-color: rgba(255, 255, 255, .18);
}

.s12-btn-primary {
    border-color: rgba(41, 99, 104, .55);
    background: linear-gradient(180deg, rgba(41, 99, 104, .96), rgba(31, 79, 83, .92));
    box-shadow: 0 18px 44px rgba(41, 99, 104, .20);
}

.s12-btn-primary:hover {
    border-color: rgba(41, 99, 104, .75)
}

.s12-btn-ghost {
    background: rgba(255, 255, 255, .05)
}

.s12-header-actions [data-phone] {
    border-color: rgba(41, 99, 104, .55);
    background: linear-gradient(180deg, rgba(41, 99, 104, .96), rgba(31, 79, 83, .92));
    box-shadow: 0 18px 44px rgba(41, 99, 104, .20);
    color: rgba(255, 255, 255, .94);
}

/* Burger */
.s12-burger {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .06);
    align-items: center;
    justify-content: center;
}

.s12-burger-lines {
    width: 18px;
    height: 12px;
    position: relative;
    display: block;
}

.s12-burger-lines>span {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    border-radius: 2px;
    background: rgba(255, 255, 255, .86);
    transition: transform .2s ease, top .2s ease, opacity .2s ease;
}

.s12-burger-lines>span:nth-child(1) {
    top: 0
}

.s12-burger-lines>span:nth-child(2) {
    top: 5px
}

.s12-burger-lines>span:nth-child(3) {
    top: 10px
}

.s12-burger.is-open .s12-burger-lines>span:nth-child(1) {
    top: 5px;
    transform: rotate(45deg)
}

.s12-burger.is-open .s12-burger-lines>span:nth-child(2) {
    opacity: 0
}

.s12-burger.is-open .s12-burger-lines>span:nth-child(3) {
    top: 5px;
    transform: rotate(-45deg)
}

/* Mobile nav */
.s12-mnav {
    display: none;
    padding: 0 0 14px;
}

.s12-mnav .s12-container {
    display: grid;
    gap: 10px
}

.s12-mnav-link {
    display: block;
    padding: 12px 12px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, .09);
    background: rgba(255, 255, 255, .05);
    color: rgba(255, 255, 255, .88);
}

.s12-mnav-cta {
    width: 100%
}

/* HERO */
.s12-hero {
    padding: 76px 0 46px;
}

.s12-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 18px;
    align-items: stretch;
}

.s12-hero-copy {
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: linear-gradient(180deg, rgba(255, 255, 255, .075), rgba(255, 255, 255, .03));
    box-shadow: var(--shadow);
    padding: 34px 30px;
    position: relative;
    overflow: hidden;
}

.s12-hero-copy::before {
    content: "";
    position: absolute;
    inset: -32%;
    background:
        radial-gradient(circle at 30% 30%, rgba(41, 99, 104, .26), transparent 55%),
        radial-gradient(circle at 65% 70%, rgba(255, 255, 255, .10), transparent 60%);
    transform: rotate(12deg);
    opacity: .9;
    pointer-events: none;
}

.s12-hero-copy>* {
    position: relative;
    z-index: 1
}

.s12-hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(41, 99, 104, .40);
    background: rgba(41, 99, 104, .12);
    color: rgba(255, 255, 255, .88);
    font-size: 13px;
}

.s12-hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 99px;
    background: var(--brand);
    box-shadow: 0 0 0 7px rgba(41, 99, 104, .18);
}

.s12-hero-title {
    margin-top: 16px;
    font-size: 54px;
    line-height: 1.02;
    letter-spacing: -1px;
}

.s12-hero-lead {
    margin-top: 14px;
    color: rgba(255, 255, 255, .80);
    font-size: 17px;
    line-height: 1.7;
    max-width: 64ch;
}

.s12-hero-actions {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.s12-hero-points {
    margin-top: 18px;
    display: grid;
    gap: 10px;
    padding: 0;
}

.s12-point {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    color: rgba(255, 255, 255, .74);
    font-size: 14px;
    line-height: 1.6;
}

.s12-point::before {
    content: "";
    width: 18px;
    height: 18px;
    border-radius: 8px;
    border: 1px solid rgba(41, 99, 104, .45);
    background: rgba(41, 99, 104, .18);
    margin-top: 2px;
    flex: 0 0 18px;
    position: relative;
}

.s12-point::after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
}

.s12-point::before {
    position: relative;
}

.s12-point::before {
    background-image:
        linear-gradient(135deg, rgba(255, 255, 255, .85), rgba(255, 255, 255, .85));
    background-size: 0 0;
}

.s12-point::before {
    overflow: hidden;
}

.s12-point::before {
    /* draw check via pseudo inside */
}

.s12-point::before {}

.s12-point::before {}

.s12-point::before::after {
    content: none
}

/* Visual column */
.s12-hero-visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.s12-media {
    border-radius: var(--r2);
    border: 1px dashed rgba(255, 255, 255, .18);
    background:
        radial-gradient(800px 320px at 18% 18%, rgba(41, 99, 104, .16), transparent 60%),
        rgba(255, 255, 255, .04);
    box-shadow: var(--shadow2);
    position: relative;
    overflow: hidden;
}

.s12-media::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, .10), transparent 55%),
        radial-gradient(260px 180px at 75% 60%, rgba(255, 255, 255, .08), transparent 60%);
    opacity: .7;
    pointer-events: none;
}

.s12-media-hero {
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 18px;
}

.s12-media-wide {
    min-height: 260px
}

.s12-media-diagram {
    min-height: 320px
}

.s12-media-step {
    min-height: 120px
}

.s12-media-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(0, 0, 0, .12);
    color: rgba(255, 255, 255, .82);
    font-size: 12px;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
    width: max-content;
}

.s12-media-hint {
    margin-top: 10px;
    color: rgba(255, 255, 255, .68);
    font-size: 12px;
    line-height: 1.55;
    position: relative;
    z-index: 1;
    max-width: 60ch;
}

.s12-hero-cards {
    display: grid;
    gap: 12px;
}

.s12-mini {
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    box-shadow: var(--shadow2);
    padding: 18px;
}

.s12-mini-title {
    font-size: 14px;
    font-weight: 850;
    letter-spacing: .2px;
}

.s12-mini-text {
    margin-top: 10px;
    color: rgba(255, 255, 255, .74);
    font-size: 14px;
    line-height: 1.6;
}

/* SECTION */
.s12-section {
    padding: var(--sectionPad) 0;
}

.s12-section-head {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 18px;
}

.s12-h2 {
    font-size: 28px;
    letter-spacing: -.3px;
    line-height: 1.15;
}

.s12-sub {
    color: var(--muted2);
    font-size: 14px;
    line-height: 1.7;
}

/* Feature cards */
.s12-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.s12-feature {
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    box-shadow: 0 12px 34px rgba(0, 0, 0, .24);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.s12-feature::before {
    content: "";
    position: absolute;
    inset: -60%;
    background: radial-gradient(circle at 30% 35%, rgba(41, 99, 104, .18), transparent 55%);
    transform: rotate(12deg);
    opacity: .9;
    pointer-events: none;
}

.s12-feature>* {
    position: relative;
    z-index: 1
}

.s12-h3 {
    font-size: 17px;
    letter-spacing: .1px
}

.s12-text {
    margin-top: 10px;
    color: rgba(255, 255, 255, .74);
    font-size: 14px;
    line-height: 1.7;
}

/* HOW */
.s12-how-layout {
  display: grid;
  grid-template-columns: 1fr; /* было: .95fr 1.05fr */
  gap: 16px;
  align-items: start;
}

.s12-steps {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  grid-template-columns: 1fr; /* по умолчанию 1 колонка */
}

/* Десктоп: 1-2 в ряд, 3-4 в ряд */
@media (min-width: 1024px) {
  .s12-steps {
    grid-template-columns: 1fr 1fr;
  }
}

.s12-step {
    list-style: none;
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    box-shadow: 0 12px 34px rgba(0, 0, 0, .22);
    padding: 18px;
    position: relative;
    overflow: hidden;
}

.s12-step::before {
    content: "";
    position: absolute;
    inset: -70%;
    background: radial-gradient(circle at 35% 35%, rgba(41, 99, 104, .16), transparent 55%);
    transform: rotate(-10deg);
    opacity: .85;
    pointer-events: none;
}

.s12-step>* {
    position: relative;
    z-index: 1
}

.s12-step-top {
    display: flex;
    align-items: center;
    gap: 12px;
}

.s12-step-num {
    width: 40px;
    height: 40px;
    border-radius: 16px;
    border: 1px solid rgba(41, 99, 104, .50);
    background: rgba(41, 99, 104, .18);
    font-weight: 900;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 40px;
}

/* CTA band */
.s12-cta {
    margin-top: 18px;
    border-radius: 28px;
    border: 1px solid rgba(41, 99, 104, .42);
    background:
        radial-gradient(900px 360px at 15% 20%, rgba(41, 99, 104, .30), transparent 55%),
        radial-gradient(800px 360px at 85% 70%, rgba(255, 255, 255, .10), transparent 60%),
        rgba(255, 255, 255, .04);
    box-shadow: var(--shadow);
    padding: 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.s12-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

/* Cases */
.s12-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.s12-case {
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    box-shadow: 0 12px 34px rgba(0, 0, 0, .22);
    overflow: hidden;
}

.s12-case-media {
    border-radius: 0;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, .10);
    min-height: 220px;
    box-shadow: none;
    padding: 18px;
}

.s12-case-body {
    padding: 18px
}

/* FAQ */
.s12-faq {
    display: grid;
    gap: 10px
}

.s12-faq-item {
    border-radius: var(--r2);
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    overflow: hidden;
}

.s12-faq-q {
    padding: 18px 16px;
    cursor: pointer;
    font-weight: 850;
    font-size: 15px;
    list-style: none;
}

.s12-faq-q::-webkit-details-marker {
    display: none
}

.s12-faq-a {
    padding: 0 16px 16px;
    color: rgba(255, 255, 255, .74);
    font-size: 14px;
    line-height: 1.7;
}

.s12-faq-a a {
    color: rgba(255, 255, 255, .88);
    text-decoration: underline
}

.s12-faq-a a:hover {
    color: rgba(255, 255, 255, .96)
}

/* Footer */
.s12-footer {
    padding: 34px 0 46px;
    color: rgba(255, 255, 255, .62);
    font-size: 12px;
}

.s12-footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 16px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 18px;
}

.s12-footer-name {
    font-weight: 850;
    color: rgba(255, 255, 255, .86);
    font-size: 14px
}

.s12-footer-tag {
    margin-top: 6px;
    color: rgba(255, 255, 255, .62);
    font-size: 20px;
}

.s12-footer-note {
    margin-top: 10px;
    color: rgba(255, 255, 255, .56);
    line-height: 1.6
}

.s12-footer-links {
    display: grid;
    gap: 10px
}

.s12-footer-links a {
    color: rgba(255, 255, 255, .74)
}

.s12-footer-links a:hover {
    color: rgba(255, 255, 255, .92)
}

.s12-footer-contacts {
    display: grid;
    gap: 10px;
    justify-items: end;
    text-align: right;
}

.s12-footer-contacts a {
    color: rgba(92, 190, 183, .96);
    font-size: 18px;
    font-weight: 900;
}

.s12-footer-contacts a:hover {
    color: rgba(126, 222, 214, .98)
}

/* Modal */
.s12-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .55);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 18px;
    z-index: 100;
}

.s12-modal.is-open {
    display: flex
}

.s12-modal-panel {
    width: min(560px, 100%);
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, .14);
    background:
        radial-gradient(900px 420px at 20% 10%, rgba(41, 99, 104, .30), transparent 55%),
        rgba(12, 18, 20, .92);
    box-shadow: 0 30px 90px rgba(0, 0, 0, .66);
    padding: 18px;
}

.s12-modal-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    padding: 4px 2px 10px;
}

.s12-modal-title {
    font-size: 16px;
    font-weight: 900;
    letter-spacing: -.2px
}

.s12-modal-sub {
    margin-top: 6px;
    color: rgba(255, 255, 255, .70);
    font-size: 13px;
    line-height: 1.55
}

.s12-modal-close {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .06);
}

/* Promo popup */
.s12-promo {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background:
        radial-gradient(760px 460px at 50% 42%, rgba(41, 99, 104, .34), transparent 68%),
        rgba(3, 7, 8, .68);
    backdrop-filter: blur(14px);
}

.s12-promo.is-open {
    display: flex;
}

.s12-promo-card {
    position: relative;
    width: min(620px, 100%);
    overflow: hidden;
    border-radius: 34px;
    border: 1px solid rgba(255, 255, 255, .18);
    background:
        radial-gradient(520px 280px at 78% 10%, rgba(255, 226, 161, .22), transparent 62%),
        radial-gradient(760px 420px at 12% 0%, rgba(92, 190, 183, .25), transparent 64%),
        linear-gradient(145deg, rgba(15, 26, 27, .97), rgba(8, 13, 14, .96));
    box-shadow:
        0 34px 100px rgba(0, 0, 0, .72),
        inset 0 1px 0 rgba(255, 255, 255, .12);
    padding: 34px;
    transform: translateY(10px) scale(.98);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
}

.s12-promo.is-open .s12-promo-card {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.s12-promo-glow {
    position: absolute;
    right: -82px;
    top: -96px;
    width: 250px;
    height: 250px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 214, 139, .58), rgba(41, 99, 104, .18) 48%, transparent 70%);
    filter: blur(2px);
    opacity: .82;
}

.s12-promo-close {
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 2;
    width: 42px;
    height: 42px;
    border-radius: 16px;
    border: 1px solid rgba(92, 190, 183, .42);
    background:
        linear-gradient(180deg, rgba(41, 99, 104, .88), rgba(31, 79, 83, .78));
    box-shadow:
        0 14px 34px rgba(41, 99, 104, .24),
        inset 0 1px 0 rgba(255, 255, 255, .18);
    color: rgba(255, 255, 255, .86);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform .16s ease, border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.s12-promo-close:hover {
    transform: translateY(-1px);
    border-color: rgba(126, 222, 214, .72);
    background:
        linear-gradient(180deg, rgba(50, 117, 122, .94), rgba(31, 79, 83, .88));
    box-shadow:
        0 18px 42px rgba(41, 99, 104, .32),
        inset 0 1px 0 rgba(255, 255, 255, .22);
}

.s12-promo-close:focus-visible {
    outline: 3px solid rgba(126, 222, 214, .28);
    outline-offset: 3px;
}

.s12-promo-kicker {
    width: fit-content;
    margin-bottom: 18px;
    padding: 9px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .07);
    color: rgba(255, 255, 255, .78);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.s12-promo-date {
    color: rgba(255, 226, 161, .96);
    font-size: 17px;
    font-weight: 950;
    letter-spacing: -.2px;
}

.s12-promo-title {
    max-width: 520px;
    margin: 8px 0 0;
    font-size: clamp(34px, 6vw, 58px);
    line-height: .96;
    letter-spacing: -2.1px;
}

.s12-promo-text {
    max-width: 520px;
    margin: 18px 0 0;
    color: rgba(255, 255, 255, .76);
    font-size: 15px;
    line-height: 1.7;
}

.s12-promo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

/* Form */
.s12-form {
    display: grid;
    gap: 10px;
    margin-top: 10px
}

.s12-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px
}

.s12-field {
    display: grid;
    gap: 6px
}

.s12-field label {
    font-size: 12px;
    color: rgba(255, 255, 255, .72)
}

.s12-field input,
.s12-field select,
.s12-field textarea {
    width: 100%;
    padding: 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    color: rgba(255, 255, 255, .92);
    outline: none;
}

.s12-field input:focus,
.s12-field select:focus,
.s12-field textarea:focus {
    border-color: rgba(41, 99, 104, .55);
    box-shadow: 0 0 0 4px rgba(41, 99, 104, .18);
}

.s12-form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 10px;
}

.s12-form-actions button {
    padding: 11px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .06);
    color: rgba(255, 255, 255, .92);
}

.s12-form-actions button[type="submit"] {
    border-color: rgba(41, 99, 104, .55);
    background: linear-gradient(180deg, rgba(41, 99, 104, .96), rgba(31, 79, 83, .92));
}

.s12-form-actions button:disabled {
    cursor: wait;
    opacity: .68;
}

.s12-form-note {
    margin-top: 6px;
    color: rgba(255, 255, 255, .56);
    font-size: 12px;
    line-height: 1.5
}

/* Reveal */
.reveal {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .55s ease, transform .55s ease;
}

.reveal.is-in {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width:1023px) {
    :root {
        --sectionPad: 52px;
    }

    .s12-nav {
        display: none
    }

    .s12-burger {
        display: inline-flex
    }

    .s12-mnav.is-open {
        display: block
    }

    .s12-hero {
        padding: 56px 0 38px
    }

    .s12-hero-grid {
        grid-template-columns: 1fr
    }

    .s12-hero-title {
        font-size: 40px
    }

    .s12-feature-grid {
        grid-template-columns: 1fr
    }

    .s12-how-layout {
        grid-template-columns: 1fr
    }

    .s12-cases-grid {
        grid-template-columns: 1fr
    }

    .s12-cta {
        flex-direction: column;
        align-items: flex-start
    }

    .s12-cta-actions {
        justify-content: flex-start
    }

    .s12-footer-grid {
        grid-template-columns: 1fr;
        gap: 14px
    }

    .s12-footer-contacts {
        justify-items: start;
        text-align: left
    }

    .s12-promo-card {
        padding: 30px;
    }
}

@media (max-width:479px) {
    :root {
        --sectionPad: 46px;
    }

    .s12-container {
        width: calc(100% - 28px)
    }

    .s12-header-actions .s12-btn {
        display: none
    }

    .s12-hero-title {
        font-size: 34px
    }

    .s12-btn {
        width: 100%
    }

    .s12-form-row {
        grid-template-columns: 1fr
    }

    .s12-promo {
        align-items: flex-end;
        padding: 10px;
    }

    .s12-promo-card {
        border-radius: 26px;
        padding: 28px 18px 18px;
    }

    .s12-promo-close {
        top: 12px;
        right: 12px;
    }

    .s12-promo-kicker {
        margin-bottom: 14px;
        padding-right: 48px;
    }

    .s12-promo-date {
        font-size: 15px;
    }

    .s12-promo-title {
        font-size: 36px;
        letter-spacing: -1.3px;
    }

    .s12-promo-actions .s12-btn {
        width: 100%;
    }
}

/* ===== Warm glow mode (2700K) ===== */
body {
    transition: background 700ms ease;
}

/* “ламповая” засветка поверх всего фона */
body::after{
  content:"";
  position:fixed;
  inset:-15%;
  pointer-events:none;
  opacity:0;
  transform: scale(1.03);
  transition: opacity 600ms ease, transform 900ms ease;
  mix-blend-mode: screen;
  background:
    radial-gradient(1100px 640px at 18% 18%, rgba(255, 205, 150, .32), transparent 60%),
    radial-gradient(1000px 620px at 82% 22%, rgba(255, 225, 170, .26), transparent 62%),
    radial-gradient(1200px 820px at 50% 88%, rgba(255, 180, 120, .22), transparent 68%);
  filter: blur(4px) saturate(1.15);
}

/* Активное состояние */
body.is-warm {
    background:
        radial-gradient(1100px 680px at 12% -10%, rgba(41, 99, 104, .20), transparent 58%),
        radial-gradient(900px 520px at 88% 12%, rgba(41, 99, 104, .14), transparent 60%),
        radial-gradient(900px 600px at 50% 112%, rgba(255, 255, 255, .10), transparent 62%),
        linear-gradient(180deg, #0b1112, #0f1718 45%, #0b1113);
    filter: brightness(1.06) contrast(1.02);
}

body.is-warm::after {
    opacity: 1;
    transform: scale(1);
}

/* Чуть “подсветим” карточки/границы, чтобы не было мрачно */
body.is-warm .s12-hero-copy,
body.is-warm .s12-feature,
body.is-warm .s12-step,
body.is-warm .s12-case,
body.is-warm .s12-faq-item,
body.is-warm .s12-mini{
  background: linear-gradient(
    180deg,
    rgba(255,255,255,.12),
    rgba(255,255,255,.06)
  );
  border-color: rgba(255, 210, 160, .28);
  box-shadow:
    0 18px 60px rgba(255, 180, 120, .10),
    0 6px 18px rgba(0,0,0,.35);
}


/* Кнопка-тумблер: активное состояние */
[data-warm-toggle][aria-pressed="true"] {
    border-color: rgba(255, 200, 140, .45);
    background: rgba(255, 200, 140, .10);
}

body.is-warm::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background: rgba(255, 210, 160, .35);
  opacity:0;
  animation: warmFlash 420ms ease-out;
}

@keyframes warmFlash{
  0%{ opacity:.35; }
  100%{ opacity:0; }
}

.s12-media img{
  width:100%;
  height:auto;
  display:block;
  border-radius: inherit;
}

.s12-media-wide{
  margin-top: 32px;
}

/* FIX: убираем распирание шапки на мобилке */
@media (max-width: 479px){
  .s12-header-actions{ min-width: 0; }   /* было 220px */
  .s12-brand{ min-width: 0; }            /* было 180px */
  .s12-header > .s12-container{ min-width: 0; }
}

html, body { overflow-x: hidden; }

/* ===== WHY LT TECH (вместо Cases) ===== */
.s12-whylt-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:16px;
}

.s12-whylt{
  border-radius: var(--r2);
  border: 1px solid rgba(255, 255, 255, .12);
  background: rgba(255, 255, 255, .05);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .22);
  padding: 20px;
  position: relative;
  overflow:hidden;
}

.s12-whylt::before{
  content:"";
  position:absolute;
  inset:-70%;
  background: radial-gradient(circle at 30% 35%, rgba(41, 99, 104, .16), transparent 55%);
  transform: rotate(10deg);
  opacity:.85;
  pointer-events:none;
}

.s12-whylt > *{ position:relative; z-index:1; }

.s12-whylt-top{
  display:flex;
  align-items:flex-start;
  gap:12px;
}

.s12-whylt-ico{
  width:44px;
  height:44px;
  border-radius: 16px;
  border: 1px solid rgba(41, 99, 104, .50);
  background: rgba(41, 99, 104, .18);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex: 0 0 44px;
  font-size:18px;
  line-height:1;
}

/* адаптив */
@media (max-width:1023px){
  .s12-whylt-grid{ grid-template-columns: 1fr; }
}

@media (min-width: 1024px){
  .s12-whylt-top{
    align-items: center;
  }
}



/* CATALOG */
/* ===== catalog styles ===== */

.s12-catalog-head{
  margin-bottom: 14px;
}

.s12-catalog-title{
  font-size: 34px;
  letter-spacing: -.6px;
  line-height: 1.1;
  margin: 0;
}

/* Tabs */
.s12-tabs{
  display:flex;
  gap:10px;
  padding:10px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow2);
  overflow:auto;
  -webkit-overflow-scrolling: touch;
}

.s12-tab{
  flex: 0 0 auto;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  color: rgba(255,255,255,.86);
  font-weight: 850;
  font-size: 13px;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}

.s12-tab:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
}

.s12-tab.is-active{
  border-color: rgba(41, 99, 104, .55);
  background: linear-gradient(180deg, rgba(41, 99, 104, .96), rgba(31, 79, 83, .92));
  box-shadow: 0 18px 44px rgba(41, 99, 104, .20);
  color: rgba(255,255,255,.94);
}

/* Toolbar */
.s12-catalog-bar{
  margin-top: 12px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}

.s12-search{
  flex: 1 1 auto;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  padding: 10px 12px;
}

.s12-search-input{
  width:100%;
  padding: 2px 2px;
  outline:none;
  border:0;
  background: transparent;
  color: rgba(255,255,255,.92);
}

.s12-search-input::placeholder{
  color: rgba(255,255,255,.52);
}

.s12-catalog-meta{
  flex: 0 0 auto;
  color: rgba(255,255,255,.72);
  font-size: 13px;
  white-space: nowrap;
}

.s12-catalog-meta [data-count]{
  font-weight: 900;
  color: rgba(255,255,255,.90);
  margin-right: 6px;
}

.s12-catalog-copy{
  max-width: 840px;
  margin: 16px 0 0;
}

.s12-catalog-copy .s12-sub{
  margin: 0;
}

/* Grid */
.s12-grid{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.s12-card{
  border-radius: var(--r2);
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  box-shadow: 0 12px 34px rgba(0,0,0,.22);
  overflow:hidden;
  display:flex;
  flex-direction: column;
  min-height: 100%;
}

.s12-card-media{
  position: relative;
  aspect-ratio: 4/3;
  border-bottom: 1px solid rgba(255,255,255,.10);
  background:
    radial-gradient(900px 380px at 15% 20%, rgba(41,99,104,.22), transparent 55%),
    radial-gradient(700px 340px at 85% 70%, rgba(255,255,255,.12), transparent 60%),
    rgba(255,255,255,.03);
  display:flex;
  align-items:center;
  justify-content:center;
}

.s12-card-media img{
  width:100%;
  height:100%;
  object-fit: cover;
  display:block;
}

.s12-card-badge{
  position:absolute;
  left: 12px;
  top: 12px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.14);
  color: rgba(255,255,255,.82);
  font-size: 12px;
  backdrop-filter: blur(10px);
}

.s12-card-body{
  padding: 16px;
  display:flex;
  flex-direction: column;
  gap: 10px;
  flex: 1 1 auto;
}

.s12-card-title{
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -.2px;
  line-height: 1.25;
}

.s12-card-desc{
  color: rgba(255,255,255,.74);
  font-size: 13px;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.s12-card-foot{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
}

.s12-price{
  font-weight: 950;
  letter-spacing: -.2px;
  font-size: 16px;
  color: rgba(255,255,255,.92);
}

.s12-price-muted{
  color: rgba(255,255,255,.62);
  font-weight: 850;
  font-size: 13px;
}

.s12-card-actions{
  display:flex;
  gap: 8px;
}

.s12-btn-sm{
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
}

/* Empty state */
.s12-empty{
  margin-top: 18px;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow2);
  padding: 22px;
  text-align: center;
}

.s12-empty-title{
  font-weight: 950;
  font-size: 16px;
}

.s12-empty-sub{
  margin-top: 8px;
  color: rgba(255,255,255,.70);
  font-size: 13px;
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 1023px){
  .s12-grid{ grid-template-columns: repeat(2, 1fr); }
  .s12-catalog-title{ font-size: 28px; }
}

@media (max-width: 479px){
  .s12-grid{ grid-template-columns: 1fr; }
  .s12-catalog-bar{ flex-direction: column; align-items: stretch; }
  .s12-catalog-meta{ text-align: left; }
}