/* ==========================================================================
   HelloWorld 官网 · 设计系统
   视觉基调参考 WordPress 二〇二五主题（Twenty Twenty-Five）：
   米白底色 / 高对比黑 / 主色紫 / 高亮黄 / 大字号 / 大留白 / 细边框
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --base: #fffdf8;
  --surface: #ffffff;
  --surface-2: #f6f1e6;
  --contrast: #101010;
  --contrast-soft: #242220;
  --muted: #6e695f;
  --line: #e5dfd2;
  --line-strong: #cfc7b6;

  --accent: #ffee58;
  --accent-soft: #fff7ce;
  --indigo: #4b3aa6;
  --indigo-deep: #35287c;
  --indigo-soft: #ece8fb;
  --pink: #f6cff4;
  --orange: #ff7a00;
  --green: #1e7d5c;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container: 1200px;
  --header-h: 76px;

  --font-display: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  --shadow-sm: 0 1px 2px rgba(16, 16, 16, 0.04);
  --shadow-md: 0 18px 40px -24px rgba(16, 16, 16, 0.28);
  --shadow-lg: 0 40px 80px -40px rgba(16, 16, 16, 0.36);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--base);
  color: var(--contrast);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

::selection {
  background: var(--accent);
  color: var(--contrast);
}

:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--contrast);
  color: var(--base);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(72px, 8vw, 120px) 0;
  position: relative;
}

.section--tight {
  padding: clamp(56px, 6vw, 88px) 0;
}

.section--tint {
  background: var(--surface-2);
}

.section--line {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(36px, 5vw, 64px);
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--indigo);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--indigo);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.section-desc {
  margin-top: 16px;
  font-size: 1.0625rem;
  color: var(--muted);
}

.mark {
  position: relative;
  z-index: 0;
  white-space: nowrap;
}

.mark::after {
  content: "";
  position: absolute;
  left: -0.06em;
  right: -0.06em;
  bottom: 0.04em;
  z-index: -1;
  height: 0.36em;
  background: var(--accent);
  border-radius: 2px;
  transform: rotate(-1deg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 28px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
    color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--contrast);
  color: var(--base);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--indigo);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background: var(--accent);
  color: var(--contrast);
}

.btn--accent:hover {
  background: #ffe92e;
  box-shadow: 0 16px 32px -18px rgba(255, 238, 88, 0.9);
}

.btn--outline {
  border-color: var(--line-strong);
  color: var(--contrast);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--contrast);
  background: var(--surface);
}

.btn--light-outline {
  border-color: rgba(255, 253, 248, 0.28);
  color: var(--base);
}

.btn--light-outline:hover {
  border-color: var(--base);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.875rem;
}

.btn--block {
  width: 100%;
}

.btn__note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
}

.arrow {
  transition: transform 0.25s var(--ease);
}

a:hover .arrow,
.btn:hover .arrow {
  transform: translateX(3px);
}

/* ---------- Announcement ---------- */
.announce {
  background: var(--contrast);
  color: rgba(255, 253, 248, 0.86);
  font-size: 0.8125rem;
}

.announce__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 40px;
  padding-top: 6px;
  padding-bottom: 6px;
}

.announce p {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  line-height: 1.6;
}

.announce strong {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--contrast);
  font-size: 0.75rem;
  font-weight: 700;
}

.announce a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.announce__close {
  flex: none;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: rgba(255, 253, 248, 0.6);
  font-size: 18px;
  line-height: 1;
  transition: background 0.2s, color 0.2s;
}

.announce__close:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--base);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -24px rgba(16, 16, 16, 0.35);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand__mark {
  position: relative;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--contrast);
  color: var(--base);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand__mark::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--base);
}

.brand__text {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.brand__text em {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  position: relative;
  padding: 9px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--contrast-soft);
  transition: background 0.2s, color 0.2s;
}

.nav__link:hover {
  background: rgba(16, 16, 16, 0.05);
}

.nav__link.is-active {
  color: var(--indigo);
  font-weight: 700;
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--indigo);
  transform: translateX(-50%);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  place-items: center;
}

.nav-toggle span {
  position: relative;
  display: block;
  width: 17px;
  height: 2px;
  background: var(--contrast);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), background 0.25s;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 17px;
  height: 2px;
  background: var(--contrast);
  border-radius: 2px;
  transition: transform 0.25s var(--ease);
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

body.nav-open .nav-toggle span {
  background: transparent;
}

body.nav-open .nav-toggle span::before {
  transform: translateY(6px) rotate(45deg);
}

body.nav-open .nav-toggle span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 7vw, 96px) 0 clamp(64px, 8vw, 104px);
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 207, 244, 0.55) 0%, rgba(255, 253, 248, 0) 68%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -220px;
  left: -160px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 238, 88, 0.4) 0%, rgba(255, 253, 248, 0) 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(40px, 5vw, 72px);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 7px 15px 7px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.hero__eyebrow span {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  background: var(--indigo);
  color: var(--base);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.2vw, 4.25rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.hero h1 .mark {
  display: inline-block;
}

.hero__lead {
  max-width: 560px;
  margin-top: 24px;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.85;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin-top: 20px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero__meta svg {
  width: 15px;
  height: 15px;
  color: var(--green);
}

/* App mockup */
.hero-visual {
  position: relative;
  padding: 10px 0 10px 14px;
}

.app-window {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: rotate(-1.2deg);
  transition: transform 0.5s var(--ease);
}

.hero-visual:hover .app-window {
  transform: rotate(0deg) translateY(-4px);
}

.app-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: #fbf8f0;
}

.app-dots {
  display: flex;
  gap: 5px;
}

.app-dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #ded7c8;
}

.app-dots i:first-child {
  background: #f2b8b5;
}

.app-dots i:nth-child(2) {
  background: #f5d78e;
}

.app-dots i:nth-child(3) {
  background: #a8d5b5;
}

.app-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.app-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: auto;
  font-size: 0.6875rem;
  color: var(--green);
  font-weight: 600;
}

.app-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(30, 125, 92, 0.14);
}

.app-body {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  min-height: 308px;
}

.app-side {
  padding: 16px 12px;
  border-right: 1px solid var(--line);
  background: #fdfbf5;
}

.side-item {
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.6875rem;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 2px;
  cursor: default;
}

.side-item.active {
  background: var(--indigo-soft);
  color: var(--indigo);
  font-weight: 700;
}

.app-chat {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 16px;
  background: linear-gradient(180deg, #fffdf8 0%, #ffffff 100%);
}

.msg {
  max-width: 88%;
  padding: 9px 13px;
  border-radius: 13px;
  font-size: 0.75rem;
  line-height: 1.65;
}

.msg .tr {
  display: block;
  margin-top: 4px;
  padding-top: 5px;
  border-top: 1px dashed rgba(16, 16, 16, 0.12);
  font-size: 0.6875rem;
  color: var(--muted);
  font-style: italic;
}

.msg--in {
  align-self: flex-start;
  background: #f4f0e6;
  border-bottom-left-radius: 4px;
  color: var(--contrast);
}

.msg--out {
  align-self: flex-end;
  background: var(--indigo);
  border-bottom-right-radius: 4px;
  color: #fff;
}

.msg--out .tr {
  border-top-color: rgba(255, 255, 255, 0.24);
  color: rgba(255, 255, 255, 0.72);
}

.typing {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  font-size: 0.6875rem;
  color: #8a6d00;
}

.typing i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #b99a00;
  animation: typing 1.2s infinite;
}

.typing i:nth-child(2) {
  animation-delay: 0.15s;
}

.typing i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes typing {
  0%,
  60%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

.app-input {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  background: #fbf8f0;
}

.app-input span {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 0.6875rem;
  color: #a29b8d;
}

.app-input b {
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  background: var(--contrast);
  color: var(--base);
  font-size: 0.6875rem;
  font-weight: 600;
}

.float-chip {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-md);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
  animation: float 6s ease-in-out infinite;
}

.float-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
}

.chip-a {
  top: -16px;
  left: -12px;
}

.chip-b {
  right: -10px;
  bottom: -12px;
  animation-delay: -3s;
}

.chip-b::before {
  background: var(--indigo);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* ---------- Stats ---------- */
.stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 6px 0;
}

.stat {
  padding: 26px 28px;
  border-left: 1px solid var(--line);
}

.stat:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat__num {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.6vw, 2.375rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat__num em {
  font-style: normal;
  font-size: 0.6em;
  color: var(--indigo);
}

.stat__label {
  margin-top: 6px;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ---------- Scenes ---------- */
.scenes__layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: start;
}

.scenes__intro {
  position: sticky;
  top: calc(var(--header-h) + 32px);
}

.scenes__aside {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.scenes__aside p {
  font-size: 0.875rem;
  color: var(--muted);
}

.scenes__aside a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--indigo);
}

.scene-list {
  border-top: 1px solid var(--line);
}

.scene {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 26px;
  align-items: start;
  gap: 18px;
  padding: 28px 10px 28px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease), padding 0.3s var(--ease);
}

.scene:hover {
  background: rgba(255, 255, 255, 0.7);
  padding-left: 14px;
  padding-right: 4px;
}

.scene__num {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--line-strong);
  letter-spacing: 0.02em;
  padding-top: 3px;
}

.scene:hover .scene__num {
  color: var(--indigo);
}

.scene h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.scene p {
  margin-top: 7px;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.8;
}

.scene__arrow {
  align-self: center;
  color: var(--line-strong);
  transition: color 0.25s, transform 0.25s;
}

.scene:hover .scene__arrow {
  color: var(--indigo);
  transform: translateX(3px);
}

/* ---------- Downloads ---------- */
.downloads__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.dl-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.dl-card--featured {
  background: var(--contrast);
  border-color: var(--contrast);
  color: var(--base);
}

.dl-card--featured:hover {
  border-color: var(--contrast);
  box-shadow: 0 30px 60px -30px rgba(16, 16, 16, 0.7);
}

.dl-card__badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--contrast);
  font-size: 0.6875rem;
  font-weight: 700;
}

.dl-card__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--surface-2);
  color: var(--contrast);
  margin-bottom: 20px;
}

.dl-card--featured .dl-card__icon {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent);
}

.dl-card__icon svg {
  width: 24px;
  height: 24px;
}

.dl-card h3 {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.dl-card__meta {
  margin-top: 6px;
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.7;
}

.dl-card--featured .dl-card__meta {
  color: rgba(255, 253, 248, 0.6);
}

.dl-card__req {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--muted);
}

.dl-card--featured .dl-card__req {
  border-top-color: rgba(255, 255, 255, 0.14);
  color: rgba(255, 253, 248, 0.6);
}

.dl-card .btn {
  margin-top: 18px;
}

.dl-card--featured .btn--outline {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--base);
}

.dl-card--featured .btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

.downloads__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 30px;
  font-size: 0.875rem;
  color: var(--muted);
}

.downloads__foot a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--indigo);
}

.downloads__foot .safe {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.downloads__foot .safe svg {
  width: 16px;
  height: 16px;
  color: var(--green);
}

/* ---------- Advantages ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.adv {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--base);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.adv:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.adv__icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 14px;
}

.adv__icon svg {
  width: 24px;
  height: 24px;
}

.adv:nth-child(1) .adv__icon {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.adv:nth-child(2) .adv__icon {
  background: var(--accent-soft);
  color: #8a6d00;
}

.adv:nth-child(3) .adv__icon {
  background: #ffe9d6;
  color: var(--orange);
}

.adv:nth-child(4) .adv__icon {
  background: #f9e4f6;
  color: #9c3d8f;
}

.adv h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
}

.adv p {
  margin-top: 8px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- Testimonials ---------- */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.quote {
  display: flex;
  flex-direction: column;
  padding: 30px 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.quote__mark {
  font-family: Georgia, serif;
  font-size: 3rem;
  line-height: 0.8;
  color: var(--accent);
  text-shadow: 0 1px 0 #e8d75a;
}

.quote blockquote {
  margin: 16px 0 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--contrast-soft);
}

.quote__foot {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 24px;
}

.avatar {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--contrast);
  background: var(--accent);
}

.quote:nth-child(2) .avatar {
  background: var(--pink);
}

.quote:nth-child(3) .avatar {
  background: #cfe3d5;
}

.quote__name {
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.4;
}

.quote__role {
  font-size: 0.75rem;
  color: var(--muted);
}

.quote__rating {
  display: flex;
  gap: 1px;
  margin-left: auto;
  color: var(--orange);
  font-size: 0.75rem;
  letter-spacing: 1px;
  white-space: nowrap;
}

.quote__rating svg {
  width: 13px;
  height: 13px;
}

/* ---------- CTA band ---------- */
.cta-wrap {
  padding: 0 0 clamp(72px, 8vw, 112px);
}

.cta {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  align-items: center;
  gap: 40px;
  padding: clamp(40px, 5vw, 68px);
  border-radius: var(--radius-lg);
  background: var(--contrast);
  color: var(--base);
}

.cta::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -80px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(75, 58, 166, 0.9) 0%, rgba(16, 16, 16, 0) 66%);
}

.cta::after {
  content: "";
  position: absolute;
  bottom: -160px;
  left: 18%;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 238, 88, 0.16) 0%, rgba(16, 16, 16, 0) 68%);
}

.cta__content,
.cta__actions {
  position: relative;
  z-index: 1;
}

.cta .eyebrow {
  color: var(--accent);
}

.cta .eyebrow::before {
  background: var(--accent);
}

.cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.cta p {
  max-width: 540px;
  margin-top: 14px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(255, 253, 248, 0.66);
}

.cta__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-self: end;
  width: 100%;
  max-width: 280px;
}

.cta__actions .btn {
  width: 100%;
}

.cta__actions small {
  font-size: 0.75rem;
  text-align: center;
  color: rgba(255, 253, 248, 0.52);
}

.cta__actions a:not(.btn) {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: clamp(56px, 7vw, 88px) 0 0;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 52px;
}

.footer__brand p {
  max-width: 320px;
  margin-top: 18px;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--muted);
}

.footer__domain {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
}

.footer__domain svg {
  width: 14px;
  height: 14px;
  color: var(--indigo);
}

.footer__col h4 {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--contrast);
}

.footer__col li {
  margin-bottom: 10px;
}

.footer__col a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}

.footer__col a:hover {
  color: var(--indigo);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 26px;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--muted);
}

.footer__bottom p {
  line-height: 1.7;
}

.footer__bottom a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer__bottom a:hover {
  color: var(--indigo);
}

.footer__seo {
  font-size: 0.71875rem;
  color: #9a9488;
}

/* ---------- Sub page hero ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 6vw, 84px) 0 clamp(36px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -140px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 238, 88, 0.34) 0%, rgba(255, 253, 248, 0) 68%);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--indigo);
}

.breadcrumb span {
  color: var(--line-strong);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.125rem, 4.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.page-hero p {
  max-width: 680px;
  margin-top: 18px;
  font-size: clamp(1rem, 1.2vw, 1.0625rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
}

.pill svg {
  width: 13px;
  height: 13px;
  color: var(--green);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- Feature page ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.cap {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.cap:hover {
  border-color: var(--indigo);
  transform: translateY(-3px);
}

.cap__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 11px;
  background: var(--indigo-soft);
  color: var(--indigo);
}

.cap__icon svg {
  width: 20px;
  height: 20px;
}

.cap h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}

.cap p {
  margin-top: 7px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

/* Split feature blocks */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: clamp(32px, 6vw, 72px);
}

.split--reverse .split__media {
  order: 2;
}

.split__text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.split__text > p {
  margin-top: 16px;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--muted);
}

.check-list {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.check-list li {
  display: flex;
  gap: 10px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--contrast-soft);
}

.check-list svg {
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 3px;
  color: var(--green);
}

.split__media {
  position: relative;
  min-height: 300px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  overflow: hidden;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.panel-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.panel-row__ic {
  width: 32px;
  height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--indigo-soft);
  color: var(--indigo);
}

.panel-row__ic svg {
  width: 16px;
  height: 16px;
}

.panel-row strong {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.4;
}

.panel-row span {
  display: block;
  font-size: 0.71875rem;
  color: var(--muted);
}

.panel-row__tag {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: #e6f4ec;
  color: var(--green);
  font-size: 0.65625rem;
  font-weight: 700;
  white-space: nowrap;
}

/* Comparison table */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow-x: auto;
}

.compare {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.compare th,
.compare td {
  padding: 16px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.compare thead th {
  background: #fbf8f0;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.compare thead th:nth-child(3) {
  color: var(--indigo);
}

.compare tbody tr:last-child td {
  border-bottom: 0;
}

.compare tbody th {
  font-weight: 600;
  color: var(--contrast-soft);
}

.compare td {
  color: var(--muted);
}

.compare td:last-child {
  color: var(--contrast);
  font-weight: 600;
}

.compare .yes {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.compare .yes svg {
  width: 16px;
  height: 16px;
  color: var(--green);
}

/* ---------- Download page ---------- */
.os-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.os-card {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.25s, box-shadow 0.25s;
}

.os-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.os-card__icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--contrast);
}

.os-card__icon svg {
  width: 26px;
  height: 26px;
}

.os-card h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
}

.os-card__meta {
  margin-top: 3px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.os-card__req {
  margin-top: 5px;
  font-size: 0.75rem;
  color: #948d7f;
}

.os-card .btn {
  padding: 11px 20px;
  font-size: 0.8125rem;
}

.os-card__badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  font-family: var(--font-body);
  font-size: 0.65625rem;
  font-weight: 700;
  color: var(--contrast);
  vertical-align: 2px;
}

.req-table td,
.req-table th {
  font-size: 0.875rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--indigo);
  letter-spacing: 0.06em;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
}

.step p {
  margin-top: 7px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.notice {
  display: flex;
  gap: 14px;
  padding: 22px 24px;
  border: 1px solid #ecdcae;
  border-radius: var(--radius);
  background: #fdf6de;
}

.notice svg {
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 2px;
  color: #9a7b00;
}

.notice strong {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 4px;
}

.notice p {
  font-size: 0.8125rem;
  line-height: 1.8;
  color: #7c6a2e;
}

.notice a {
  color: #6b5200;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- FAQ ---------- */
.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--indigo);
}

.faq-item summary svg {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--muted);
  transition: transform 0.3s var(--ease), color 0.3s;
}

.faq-item[open] summary svg {
  transform: rotate(45deg);
  color: var(--indigo);
}

.faq-item__body {
  padding: 0 48px 24px 4px;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--muted);
}

.faq-item__body p + p {
  margin-top: 10px;
}

.faq-item__body a {
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.faq-aside {
  position: sticky;
  top: calc(var(--header-h) + 32px);
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.faq-aside h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
}

.faq-aside p {
  margin-top: 8px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.faq-aside .btn {
  margin-top: 18px;
}

.faq-group + .faq-group {
  margin-top: 44px;
}

.faq-group__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--indigo);
}

/* ---------- About ---------- */
.about-split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}

.about-quote {
  padding: clamp(32px, 4vw, 48px);
  border-radius: var(--radius-lg);
  background: var(--indigo);
  color: var(--base);
  position: relative;
  overflow: hidden;
}

.about-quote::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.about-quote p {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.about-quote span {
  display: block;
  margin-top: 20px;
  font-size: 0.8125rem;
  color: rgba(255, 253, 248, 0.6);
}

.timeline {
  position: relative;
  margin-top: 8px;
  padding-left: 30px;
  border-left: 1px solid var(--line);
}

.tl-item {
  position: relative;
  padding-bottom: 34px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--contrast);
}

.tl-item time {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--indigo);
}

.tl-item h3 {
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
}

.tl-item p {
  margin-top: 5px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.value {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.value h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}

.value p {
  margin-top: 8px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.value__num {
  display: block;
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--line-strong);
  letter-spacing: 0.1em;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.contact-card {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.contact-card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--indigo-soft);
  color: var(--indigo);
}

.contact-card__icon svg {
  width: 21px;
  height: 21px;
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}

.contact-card p {
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.contact-card a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--indigo);
  word-break: break-all;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 64px);
  align-items: start;
}

.form {
  padding: clamp(26px, 3vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.field label em {
  color: var(--orange);
  font-style: normal;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--base);
  color: var(--contrast);
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.6;
  transition: border-color 0.2s, background 0.2s;
}

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--indigo);
  background: var(--surface);
}

.field input::placeholder,
.field textarea::placeholder {
  color: #a8a196;
}

.field.is-error input,
.field.is-error textarea {
  border-color: #d14b3f;
}

.field__error {
  display: none;
  margin-top: 5px;
  font-size: 0.75rem;
  color: #c0392b;
}

.field.is-error .field__error {
  display: block;
}

.form__note {
  margin-top: 12px;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--muted);
}

.form__note a {
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Legal / prose ---------- */
.prose {
  max-width: 820px;
}

.prose h2 {
  margin: 38px 0 12px;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose li {
  font-size: 0.9375rem;
  line-height: 1.95;
  color: var(--muted);
}

.prose p + p {
  margin-top: 12px;
}

.prose ul {
  margin: 10px 0 0;
  padding-left: 20px;
  list-style: disc;
}

.prose li {
  margin-bottom: 6px;
}

.prose a {
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose__meta {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--d, 0s);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: calc(100vw - 40px);
  padding: 13px 22px;
  border-radius: var(--radius-pill);
  background: var(--contrast);
  color: var(--base);
  font-size: 0.8125rem;
  line-height: 1.6;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translate(-50%, 16px);
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--accent);
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 26px;
  z-index: 80;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 253, 248, 0.92);
  color: var(--contrast);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
}

.to-top.is-show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  background: var(--contrast);
  color: var(--base);
}

.to-top svg {
  width: 18px;
  height: 18px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav__link {
    padding: 9px 9px;
    font-size: 0.875rem;
  }

  .header__actions .header__tg {
    display: none;
  }

  .downloads__grid,
  .adv-grid,
  .cap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  :root {
    --header-h: 68px;
  }

  .nav {
    position: fixed;
    top: calc(var(--header-h) + 0px);
    left: 0;
    right: 0;
    z-index: 89;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 24px 24px;
    background: var(--base);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  }

  body.nav-open .nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__link {
    padding: 13px 12px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .nav__link.is-active {
    background: var(--accent-soft);
  }

  .nav__link.is-active::after {
    display: none;
  }

  .nav-toggle {
    display: grid;
  }

  .hero__inner,
  .scenes__layout,
  .split,
  .about-split,
  .contact-layout,
  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .scenes__intro,
  .faq-aside {
    position: static;
  }

  .hero-visual {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }

  .split--reverse .split__media {
    order: 0;
  }

  .split__text {
    order: -1;
  }

  .quote-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta__actions {
    justify-self: start;
    max-width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .cta__actions .btn {
    width: auto;
    min-width: 180px;
  }

  .cta__actions small {
    width: 100%;
    text-align: left;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat {
    padding: 22px 22px;
  }

  .stat:nth-child(3) {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--line);
  }

  .stat:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .container {
    padding: 0 20px;
  }

  .hero {
    padding-top: 40px;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
  }

  .hero__meta {
    gap: 6px 14px;
  }

  .app-body {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .app-side {
    display: none;
  }

  .chip-a {
    left: 0;
    top: -10px;
  }

  .chip-b {
    right: 0;
    bottom: -8px;
  }

  .downloads__grid,
  .adv-grid,
  .cap-grid,
  .os-grid,
  .steps,
  .value-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .form__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .os-card {
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .os-card .btn {
    grid-column: 1 / -1;
  }

  .os-card__icon {
    width: 48px;
    height: 48px;
  }

  .faq-item__body {
    padding-right: 8px;
  }

  .to-top {
    right: 16px;
    bottom: 18px;
  }
}

@media (max-width: 480px) {
  .brand__text em {
    display: none;
  }

  .announce__inner {
    align-items: flex-start;
  }

  .hero h1 {
    font-size: clamp(2.1rem, 9vw, 2.6rem);
  }

  .stats__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .stat {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--line);
  }

  .stat:nth-child(2) {
    border-top: 1px solid var(--line);
  }

  .cta__actions .btn {
    width: 100%;
  }

  .float-chip {
    font-size: 0.6875rem;
    padding: 7px 12px;
  }
}

/* ---------- Anchors ---------- */
[id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- Motion preference ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Blog ---------- */
.blog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.blog-toolbar p {
  font-size: 0.875rem;
  color: var(--muted);
}

.blog-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blog-cats span {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  color: var(--muted);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 26px 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.post-card__tag {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--indigo-soft);
  color: var(--indigo);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.post-card__title {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
}

.post-card__title a {
  color: var(--contrast);
}

.post-card__title a:hover {
  color: var(--indigo);
}

.post-card__excerpt {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.post-card__foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--muted);
}

.post-card__foot a {
  color: var(--indigo);
  font-weight: 700;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.article-head {
  margin-bottom: 26px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 16px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.article-meta .post-card__tag {
  margin-right: 4px;
}

.article-body.prose {
  max-width: none;
}

.article-body h2 {
  margin-top: 42px;
  font-size: 1.4375rem;
}

.article-body h3 {
  margin: 26px 0 10px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
}

.article-body blockquote {
  margin: 26px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--indigo);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--indigo-soft);
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--contrast-soft);
}

.article-body blockquote p {
  color: var(--contrast-soft);
}

.article-aside {
  position: sticky;
  top: calc(var(--header-h) + 32px);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.article-aside h3 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
}

.article-aside ol {
  margin-top: 12px;
  padding-left: 18px;
  list-style: decimal;
  font-size: 0.8125rem;
  line-height: 1.9;
}

.article-aside li + li {
  margin-top: 4px;
}

.article-aside a {
  color: var(--muted);
}

.article-aside a:hover {
  color: var(--indigo);
}

.article-aside .btn {
  margin-top: 18px;
}

.article-cta {
  margin: 40px 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
}

.article-cta strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
}

.article-cta p {
  margin-top: 8px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--contrast-soft);
}

.article-cta .btn {
  margin-top: 16px;
}

.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 44px;
}

.post-nav a {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.875rem;
  font-weight: 500;
  transition: border-color 0.2s, transform 0.2s;
}

.post-nav a:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.post-nav span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.post-nav a:last-child {
  text-align: right;
}

@media (max-width: 1080px) {
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .article-aside {
    position: static;
  }
}

@media (max-width: 720px) {
  .post-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-nav a:last-child {
    text-align: left;
  }

  .blog-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Homepage SEO blocks: overview / languages / sitemap ---------- */
.overview-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: start;
}

.overview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.overview-layout .check-list a {
  color: var(--contrast);
  font-weight: 600;
  border-bottom: 1px solid var(--line-strong);
}

.overview-layout .check-list a:hover {
  color: var(--indigo);
  border-bottom-color: var(--indigo);
}

.lang-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.lang-group {
  padding: 20px 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.lang-group h3 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--contrast);
}

.lang-group .pill-row {
  margin-top: 12px;
  gap: 8px;
}

.lang-group .pill {
  padding: 4px 10px;
  font-size: 0.6875rem;
  background: var(--surface);
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
  margin-top: 32px;
}

.sitemap-col h3 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--contrast);
  margin-bottom: 14px;
}

.sitemap-col ul {
  display: grid;
  gap: 9px;
}

.sitemap-col a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}

.sitemap-col a:hover {
  color: var(--indigo);
}

@media (max-width: 1080px) {
  .lang-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sitemap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .overview-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }
}

@media (max-width: 720px) {
  .lang-groups,
  .sitemap-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}