:root {
  --pt-bg: #07101c;
  --pt-bg-soft: #0a1422;
  --pt-panel: #0e192a;
  --pt-panel-2: #111e31;
  --pt-line: rgba(139, 158, 190, 0.14);
  --pt-line-blue: rgba(110, 148, 249, 0.25);
  --pt-text: #eef3fb;
  --pt-muted: #8896aa;
  --pt-dim: #65748a;
  --pt-blue: #638cff;
  --pt-blue-strong: #4e75e3;
  --pt-green: #55d6aa;
  --pt-warn: #e9b95f;
  --pt-danger: #ed6a6a;
  --pt-shadow: 0 34px 90px -58px rgba(0, 0, 0, 0.95);
}

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  color: var(--pt-text);
  background:
    radial-gradient(800px 480px at 73% -8%, rgba(81, 119, 221, 0.15), transparent 70%),
    radial-gradient(700px 520px at -12% 32%, rgba(46, 167, 128, 0.07), transparent 70%),
    var(--pt-bg);
  font-family: "Archivo", "Segoe UI", sans-serif;
}

.backdrop {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(145, 162, 191, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(145, 162, 191, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

main {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 130px 28px 88px;
}

h1, h2, h3 {
  color: var(--pt-text);
  font-family: "Archivo", "Segoe UI", sans-serif;
}

p { color: var(--pt-muted); }

.header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  width: min(1180px, calc(100% - 32px));
  padding: 12px 14px 12px 16px;
  transform: translateX(-50%);
  border: 1px solid var(--pt-line);
  border-radius: 17px;
  background: rgba(8, 16, 29, 0.86);
  box-shadow: 0 22px 60px -42px rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(18px);
}

.brand { display: flex; align-items: center; gap: 11px; }
.brand__badge { width: 38px; height: 38px; overflow: hidden; border: 1px solid rgba(127, 160, 249, 0.35); border-radius: 11px; background: linear-gradient(145deg, #668fff, #486bd0); }
.brand__name { color: #f5f8fe; font-size: 0.95rem; font-weight: 750; letter-spacing: -0.025em; }
.brand__desc { margin-top: 2px; color: #67768c; font-size: 0.68rem; }

.header__nav { display: flex; align-items: center; gap: 3px; color: #8b99ad; font-size: 0.75rem; }
.header__nav a { padding: 8px 10px; border-radius: 9px; }
.header__nav a:hover { color: #eef3fb; background: rgba(76, 103, 164, 0.12); }

.auth { display: flex; align-items: center; justify-content: flex-end; gap: 7px; flex-wrap: wrap; }
.auth__status { display: inline-flex; align-items: center; gap: 5px; padding: 6px 9px; border: 1px solid var(--pt-line); border-radius: 999px; color: #8796aa; background: rgba(14, 25, 42, 0.78); font-size: 0.65rem; }
.auth__status strong { color: #cbd5e5; font-weight: 650; }
.auth__message { position: absolute; top: calc(100% + 5px); right: 10px; width: auto; max-width: 360px; color: #f3a8a8; font-size: 0.68rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 39px;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: "Archivo", "Segoe UI", sans-serif;
  font-size: 0.74rem;
  font-weight: 750;
  cursor: pointer;
  transition: 160ms ease;
}

.btn--primary { color: #fff; background: linear-gradient(135deg, var(--pt-blue-strong), var(--pt-blue)); box-shadow: 0 15px 32px -22px rgba(99, 140, 255, 0.95); }
.btn--primary:hover { transform: translateY(-1px); filter: brightness(1.07); }
.btn--ghost { color: #bbc7d9; border-color: var(--pt-line); background: rgba(14, 25, 42, 0.72); }
.btn--ghost:hover { color: #fff; border-color: rgba(110, 148, 249, 0.38); background: rgba(24, 39, 65, 0.86); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.93fr) minmax(480px, 1.07fr);
  align-items: center;
  gap: clamp(42px, 6vw, 86px);
  min-height: 620px;
  margin-bottom: 118px;
}

.hero__center { max-width: 610px; text-align: left; }
.ribbon, .section-kicker { display: inline-flex; align-items: center; gap: 6px; color: #9fb8ff; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.11em; text-transform: uppercase; }
.ribbon { padding: 7px 10px; border: 1px solid rgba(110, 148, 249, 0.2); border-radius: 999px; background: rgba(78, 110, 200, 0.11); }
.hero h1 { max-width: 650px; margin-top: 23px; color: #f7f9fe; font-size: clamp(3.1rem, 6vw, 5.45rem); line-height: 0.98; letter-spacing: -0.055em; }
.hero__center > p { max-width: 590px; margin-top: 23px; color: #94a2b6; font-size: 1rem; line-height: 1.75; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 29px; }
.trust-line { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; color: #728299; font-size: 0.7rem; }
.trust-line span { display: inline-flex; align-items: center; gap: 6px; }
.trust-line span:first-child { color: #7fcfb3; }

.product-stage { position: relative; min-height: 475px; }
.stage-glow { position: absolute; inset: 5% 7% 4%; border-radius: 50%; background: radial-gradient(circle, rgba(82, 124, 240, 0.2), rgba(47, 189, 140, 0.07) 40%, transparent 72%); filter: blur(20px); }
.stage-window { position: absolute; inset: 42px 14px 38px 28px; overflow: hidden; border: 1px solid rgba(130, 153, 194, 0.17); border-radius: 20px; background: #0a1423; box-shadow: 0 42px 90px -48px rgba(0, 0, 0, 0.95), 0 0 0 8px rgba(32, 47, 76, 0.08); transform: perspective(1000px) rotateY(-2deg) rotateX(1deg); }
.window-bar { display: flex; gap: 6px; height: 35px; padding: 13px 15px; border-bottom: 1px solid rgba(128, 150, 187, 0.1); background: #0c1727; }
.window-bar span { width: 7px; height: 7px; border-radius: 50%; background: #33415a; }
.window-bar span:nth-child(1) { background: #e06c69; }
.window-bar span:nth-child(2) { background: #dcae5f; }
.window-bar span:nth-child(3) { background: #4ec99a; }
.window-screen { display: grid; grid-template-columns: 56px minmax(0, 1fr); min-height: 335px; }
.window-side { display: flex; flex-direction: column; align-items: center; gap: 13px; padding: 17px 9px; border-right: 1px solid rgba(130, 153, 194, 0.09); background: #091321; }
.window-side span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; color: #60718a; background: rgba(38, 56, 87, 0.32); font-size: 0.85rem; }
.window-side span:first-child { color: #91adff; background: rgba(78, 111, 203, 0.18); }
.window-main { padding: 19px; }
.window-title { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.window-title h3 { font-size: 1rem; }
.window-title p { margin-top: 3px; color: #66778e; font-size: 0.62rem; }
.window-status { padding: 5px 7px; border: 1px solid rgba(61, 202, 151, 0.15); border-radius: 999px; color: #75d8b5; background: rgba(35, 160, 116, 0.08); font-size: 0.56rem; }
.window-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; margin: 17px 0 14px; }
.window-stats > div { display: grid; gap: 4px; padding: 10px; border: 1px solid rgba(127, 149, 185, 0.1); border-radius: 9px; background: rgba(17, 30, 50, 0.8); }
.window-stats small { color: #64758c; font-size: 0.54rem; }
.window-stats strong { color: #e6edf7; font-size: 0.86rem; }
.price-good { color: #5bd4aa !important; }
.window-product { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 9px; padding: 10px; border-bottom: 1px solid rgba(126, 147, 181, 0.08); }
.window-product__icon { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 9px; color: #7f98d8; background: rgba(60, 84, 143, 0.17); }
.window-product > div { display: grid; gap: 2px; }
.window-product strong { color: #dce4ef; font-size: 0.67rem; }
.window-product small { color: #66778d; font-size: 0.53rem; }
.float-card { position: absolute; z-index: 3; display: grid; gap: 4px; min-width: 145px; padding: 12px 14px; border: 1px solid rgba(130, 154, 197, 0.18); border-radius: 12px; background: rgba(15, 27, 45, 0.94); box-shadow: 0 22px 52px -32px rgba(0, 0, 0, 0.95); backdrop-filter: blur(12px); }
.float-card small { color: #6f8097; font-size: 0.57rem; }
.float-card strong { color: #e7edf7; font-size: 0.82rem; }
.float-drop { top: 15px; right: -4px; }
.float-drop strong { color: #63d8ae; }
.float-cart { left: 0; bottom: 8px; }

.economy, .features, .plans, .download, .feedback, .faq { margin: 116px 0; }
.economy { display: grid; grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr); gap: clamp(34px, 6vw, 80px); padding: clamp(28px, 5vw, 58px); border: 1px solid rgba(126, 149, 185, 0.11); border-radius: 25px; background: linear-gradient(145deg, rgba(15, 27, 46, 0.96), rgba(9, 19, 33, 0.95)); box-shadow: var(--pt-shadow); }
.economy h2 { margin-top: 16px; color: #f2f6fd; font-size: clamp(2.1rem, 4vw, 3.45rem); line-height: 1.05; letter-spacing: -0.045em; }
.economy__lead p { margin-top: 18px; color: #7e8da2; }
.economy__grid { display: grid; gap: 10px; }
.economy__grid article { display: grid; grid-template-columns: 42px minmax(0, 1fr); column-gap: 14px; padding: 18px; border: 1px solid rgba(126, 149, 185, 0.1); border-radius: 14px; background: rgba(20, 35, 58, 0.6); }
.economy__grid article > span { grid-row: 1 / 3; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; color: #9db5ff; background: rgba(77, 111, 208, 0.15); font-size: 0.68rem; font-weight: 800; }
.economy__grid h3 { font-size: 0.98rem; }
.economy__grid p { margin-top: 5px; color: #78889d; font-size: 0.78rem; line-height: 1.55; }

.section-title { display: grid; gap: 13px; max-width: 760px; }
.section-title h2 { color: #f2f6fd; font-size: clamp(2.2rem, 4.2vw, 3.65rem); line-height: 1.05; letter-spacing: -0.045em; }
.section-title p { color: #7d8da2; }
.section-title--center { margin-inline: auto; text-align: center; }
.grid__cards, .plans__grid, .faq__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; margin-top: 35px; }
.grid__cards article, .plan, .faq__grid article, .download__card, .feedback__panel { border: 1px solid var(--pt-line); border-radius: 17px; background: rgba(14, 25, 42, 0.78); box-shadow: var(--pt-shadow); }
.grid__cards { counter-reset: steps; }
.grid__cards article { position: relative; min-height: 210px; padding: 68px 22px 22px; }
.grid__cards article::before { counter-increment: steps; content: "0" counter(steps); position: absolute; left: 22px; top: 22px; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; color: #9db5ff; background: rgba(77, 111, 208, 0.15); font-size: 0.63rem; font-weight: 800; }
.grid__cards h3, .plan h3, .faq__grid h3, .download__card h3 { font-size: 1.05rem; }
.grid__cards p, .plan li, .faq__grid p, .download__card p { margin-top: 11px; color: #75859a; font-size: 0.78rem; line-height: 1.65; }
.register__actions { margin-top: 18px !important; }

.plan { position: relative; display: grid; align-content: start; padding: 24px; }
.plan--featured { border-color: rgba(106, 147, 255, 0.35); background: linear-gradient(180deg, rgba(49, 72, 134, 0.23), rgba(14, 25, 42, 0.86)); box-shadow: 0 24px 70px -48px rgba(92, 132, 247, 0.9); }
.plan__badge { display: inline-flex; width: max-content; margin-bottom: 15px; padding: 5px 8px; border: 1px solid rgba(111, 146, 239, 0.18); border-radius: 999px; color: #9eb5f6; background: rgba(72, 103, 188, 0.11); font-size: 0.62rem; font-weight: 750; }
.plan__price { margin: 15px 0; color: #f0f4fb; font-size: 1.75rem; }
.plan ul { display: grid; gap: 3px; margin: 0 0 22px; padding-left: 17px; }
.plan .btn { margin-top: auto; }

.faq__grid article { padding: 22px; }
.faq__grid p { margin-top: 9px; }

.landing-cta { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin: 116px 0; padding: clamp(28px, 5vw, 50px); overflow: hidden; border: 1px solid rgba(101, 143, 255, 0.22); border-radius: 22px; background: radial-gradient(500px 230px at 95% 100%, rgba(53, 199, 147, 0.1), transparent 70%), linear-gradient(135deg, rgba(47, 70, 133, 0.28), rgba(13, 24, 41, 0.93)); }
.landing-cta h2 { margin-top: 12px; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.05; letter-spacing: -0.045em; }
.landing-cta p { margin-top: 13px; max-width: 620px; }
.landing-cta > div:last-child { display: flex; flex-wrap: wrap; gap: 8px; flex-shrink: 0; }

.download__grid { margin-top: 28px; }
.download__card { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 25px; }
.download__os { display: inline-flex; margin-bottom: 10px; color: #9cb4fa; font-size: 0.64rem; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; }
.feedback__panel { margin-top: 25px; padding: 24px; }
.feedback__hint { margin-bottom: 16px; font-size: 0.78rem; }

.feedback__form, .register__form, .auth__form { display: grid; gap: 13px; }
.feedback__form label, .register__form label, .auth__form label { display: grid; gap: 6px; color: #99a7ba; font-size: 0.72rem; }
input, textarea { width: 100%; padding: 11px 12px; border: 1px solid rgba(126, 149, 185, 0.18); border-radius: 10px; outline: none; color: #e7edf7; background: rgba(5, 12, 22, 0.65); font: inherit; }
input:focus, textarea:focus { border-color: rgba(103, 143, 249, 0.58); box-shadow: 0 0 0 3px rgba(80, 122, 237, 0.09); }
.feedback__counter, .form__message { color: #69798f; font-size: 0.68rem; }

.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 18px; }
.modal__overlay { position: absolute; inset: 0; background: rgba(2, 7, 14, 0.78); backdrop-filter: blur(8px); }
.modal__dialog { position: relative; z-index: 1; width: min(440px, 100%); padding: 28px; border: 1px solid rgba(128, 151, 190, 0.2); border-radius: 18px; background: #0d192a; box-shadow: 0 38px 100px -45px #000; }
.modal__dialog h3 { margin-bottom: 20px; font-size: 1.4rem; }
.modal__close { position: absolute; top: 13px; right: 15px; color: #7f8ea3; font-size: 1.4rem; }
.modal__dialog .note { display: block; padding: 9px 10px; border: 1px solid var(--pt-line); border-radius: 9px; color: #78889d; background: rgba(15, 28, 47, 0.75); font-size: 0.68rem; }

.footer { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 1180px; margin: 0 auto; padding: 26px 28px; border-top: 1px solid var(--pt-line); color: #64748a; font-size: 0.7rem; }
.footer__right { display: flex; gap: 15px; flex-wrap: wrap; }
.footer__link:hover { color: #b9c7da; }

@media (max-width: 980px) {
  .header__nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero__center { max-width: 760px; }
  .product-stage { min-height: 460px; }
  .economy { grid-template-columns: 1fr; }
  .grid__cards, .plans__grid, .faq__grid { grid-template-columns: 1fr; }
  .landing-cta { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 680px) {
  main { padding: 112px 17px 62px; }
  .header { top: 9px; width: calc(100% - 18px); padding: 9px 10px; }
  .brand__desc, #authRegisterBtn, .auth__status span, #authChangePasswordBtn, #authResetProductsBtn { display: none !important; }
  .brand__badge { width: 34px; height: 34px; }
  .auth .btn { min-height: 34px; padding: 7px 9px; font-size: 0.64rem; }
  .hero { gap: 28px; margin-bottom: 76px; }
  .hero h1 { font-size: clamp(2.75rem, 15vw, 4.5rem); }
  .product-stage { min-height: 395px; }
  .stage-window { inset: 28px 0 35px; transform: none; }
  .window-screen { grid-template-columns: 43px minmax(0, 1fr); }
  .window-side { padding-inline: 5px; }
  .window-side span { width: 27px; height: 27px; }
  .window-main { padding: 13px; }
  .float-card { min-width: 128px; padding: 10px 11px; }
  .float-drop { right: -4px; }
  .float-cart { left: -3px; }
  .economy, .features, .plans, .download, .feedback, .faq, .landing-cta { margin: 78px 0; }
  .download__card, .footer { align-items: flex-start; flex-direction: column; }
}