:root {
  color-scheme: light;
  --bg: #f4f7f6;
  --bg-soft: #ecf2f0;
  --surface: #ffffff;
  --surface-2: #eef4f2;
  --surface-3: #e4ece9;
  --text: #102025;
  --muted: #5a6c72;
  --line: #d6e1de;
  --line-strong: #bccbc7;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #d9f0ec;
  --amber: #d97706;
  --amber-soft: #fff2dd;
  --shadow: 0 20px 50px rgba(15, 23, 32, 0.08);
  --shadow-soft: 0 8px 24px rgba(15, 23, 32, 0.07);
  --radius: 8px;
  --radius-sm: 6px;
  --container: 1160px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  z-index: 50;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-soft);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  min-height: 100vh;
}

.page-band,
.site-footer {
  width: 100%;
}

.inner {
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(244, 247, 246, 0.88);
  border-bottom: 1px solid rgba(214, 225, 222, 0.9);
}

.site-header__bar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: 0;
}

.brand__mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #0f1720;
  overflow: hidden;
  flex: none;
}

.brand__mark img {
  width: 100%;
  height: 100%;
}

.brand__text {
  display: grid;
  gap: 0.05rem;
}

.brand__name {
  font-size: 1rem;
  line-height: 1.2;
}

.brand__tag {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.2;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 40px;
  padding: 0.55rem 0.8rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line);
}

.nav-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 40px;
  padding: 0.55rem 0.95rem;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow-soft);
}

.nav-action:hover {
  background: var(--accent-strong);
}

.icon {
  width: 1rem;
  height: 1rem;
  flex: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 46px;
  padding: 0.72rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  line-height: 1;
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.button--primary:hover {
  background: var(--accent-strong);
}

.button--secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--text);
}

.button--secondary:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.button--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: 2.8rem 0 1.6rem;
  color: #eef7f5;
  background: #10171c;
  border-bottom: 1px solid rgba(214, 225, 222, 0.18);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.hero--home {
  min-height: 600px;
  display: grid;
  align-items: center;
  padding: 2rem 0 1.5rem;
  background:
    linear-gradient(106deg, #101820 0 53%, #f7f8f7 53.1% 100%);
}

.hero--home::before {
  inset: 0;
  background:
    radial-gradient(circle at 1px 1px, rgba(45, 212, 191, 0.34) 1px, transparent 1.5px) 0 0 / 18px 18px,
    linear-gradient(180deg, rgba(16, 24, 32, 0), rgba(16, 24, 32, 0.34));
  opacity: 0.48;
  mask-image: linear-gradient(90deg, #000 0 45%, transparent 70%);
}

.hero--home::after {
  inset: 0;
  background:
    linear-gradient(106deg, transparent 0 52.6%, rgba(15, 23, 32, 0.16) 52.7%, transparent 54%),
    radial-gradient(circle at 86% 44%, rgba(15, 118, 110, 0.16), transparent 34%);
}

.hero--compact {
  min-height: 350px;
  padding: 2.8rem 0 1.6rem;
  background:
    linear-gradient(106deg, #101820 0 58%, #f7f8f7 58.1% 100%);
}

.hero--compact .hero__content {
  width: min(590px, calc(100% - 2rem));
  margin-left: max(1rem, calc((100vw - var(--container)) / 2));
  margin-right: auto;
}

.hero--compact::before {
  inset: 0;
  background:
    radial-gradient(circle at 1px 1px, rgba(45, 212, 191, 0.32) 1px, transparent 1.5px) 0 0 / 18px 18px,
    linear-gradient(106deg, transparent 0 57.4%, rgba(15, 23, 32, 0.16) 57.5%, transparent 58.7%);
  opacity: 0.38;
  mask-image: linear-gradient(90deg, #000 0 54%, transparent 82%);
}

.hero--compact::after {
  right: -7%;
  top: 50%;
  width: min(720px, 60%);
  height: 86%;
  transform: translateY(-50%);
  background: url("../img/bootice-hero.svg") center / contain no-repeat;
  opacity: 0.18;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(660px, 100%);
  display: grid;
  gap: 1rem;
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
  align-items: center;
  gap: 1.5rem;
}

.hero__copy {
  display: grid;
  gap: 0.72rem;
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  min-height: 24px;
  color: #62ded3;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.section-title {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.12;
}

.hero h1 {
  font-size: 2.7rem;
  max-width: 14ch;
  color: #f7fbfa;
}

.hero p {
  margin: 0;
  max-width: 62ch;
  color: #c7d8d4;
}

.hero--compact p {
  max-width: 56ch;
}

.hero--home h1 {
  font-size: 3.45rem;
  line-height: 1.03;
  max-width: 8ch;
  color: #f8fbfb;
}

.hero--home h1 span {
  display: block;
}

.hero__rule {
  width: 74px;
  height: 4px;
  border-radius: 999px;
  background: #2dd4bf;
}

.hero--home p {
  max-width: 42ch;
  color: rgba(224, 235, 233, 0.84);
  font-size: 1rem;
}

.hero--home .button {
  min-height: 42px;
  padding: 0.64rem 0.9rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.62rem 0.7rem;
  margin-top: 0.18rem;
}

.hero-feature {
  display: grid;
  grid-template-columns: 2.05rem 1fr;
  gap: 0.55rem;
  align-items: start;
}

.hero-feature__icon {
  width: 2.05rem;
  height: 2.05rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(98, 222, 211, 0.48);
  border-radius: var(--radius-sm);
  color: #62ded3;
  background: rgba(255, 255, 255, 0.04);
}

.hero-feature strong,
.hero-feature span {
  /*display: block;*/
}

.hero-feature strong {
  color: #f8fbfb;
  font-size: 0.95rem;
  line-height: 1.25;
}

.hero-feature span {
  color: rgba(203, 217, 215, 0.8);
  font-size: 0.86rem;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.1rem;
}

.hero-badge {
  display: grid;
  grid-template-columns: 1.55rem 1fr;
  gap: 0.48rem;
  align-items: center;
  padding-right: 1rem;
  border-right: 1px solid rgba(214, 225, 222, 0.18);
}

.hero-badge:last-child {
  border-right: 0;
  padding-right: 0;
}

.hero-badge__icon {
  width: 1.55rem;
  height: 1.55rem;
  display: grid;
  place-items: center;
  color: #62ded3;
}

.hero-badge strong,
.hero-badge span {
  display: block;
  line-height: 1.2;
}

.hero-badge strong {
  color: #f8fbfb;
  font-size: 0.86rem;
}

.hero-badge span {
  color: rgba(203, 217, 215, 0.78);
  font-size: 0.76rem;
}

.hero__visual {
  position: relative;
  justify-self: end;
  width: min(940px, 64vw);
  margin-right: -5rem;
  transform: translateY(-1rem);
}

.hero__visual img {
  width: 100%;
  filter: drop-shadow(0 34px 46px rgba(15, 23, 32, 0.24));
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.55rem;
}

.meta-chip {
  min-width: 0;
  padding: 0.95rem 1rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.meta-chip strong,
.meta-chip span {
  display: block;
}

.meta-chip strong {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.meta-chip span {
  color: #c6d8d4;
  font-size: 0.92rem;
}

.section {
  padding: 4rem 0;
}

.section--tight {
  padding: 3rem 0;
}

.section-head {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.section-kicker {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

.section-title {
  font-size: 2rem;
}

.section-copy {
  margin: 0;
  color: var(--muted);
  max-width: 72ch;
}

.feature-grid,
.download-grid,
.info-grid,
.faq-grid {
  display: grid;
  gap: 1rem;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.info-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.panel--soft {
  background: linear-gradient(180deg, #fff, #f7fbfa);
}

.panel__body {
  padding: 1.15rem;
}

.panel__body--dense {
  padding: 1rem 1.1rem;
}

.panel h3,
.panel h4 {
  margin: 0;
  line-height: 1.2;
}

.panel h3 {
  font-size: 1.08rem;
}

.panel p {
  margin: 0;
  color: var(--muted);
}

.panel__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
}

.pill--amber {
  background: var(--amber-soft);
  color: #a45100;
}

.stat-list {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
}

.stat-list li {
  display: grid;
  grid-template-columns: 1.2rem 1fr;
  gap: 0.65rem;
  align-items: start;
  color: var(--muted);
}

.stat-list svg {
  color: var(--accent);
  margin-top: 0.2rem;
}

.callout {
  padding: 1.15rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #f0f8f7, #e7f3f1);
  border: 1px solid #cae4df;
}

.callout--dark {
  background: linear-gradient(180deg, #0f1720, #16242a);
  color: #edf5f3;
  border-color: rgba(255, 255, 255, 0.08);
}

.callout--dark p {
  color: #cad9d6;
}

.callout--dark .section-kicker {
  color: #83d7cf;
}

.callout--dark .section-title {
  color: #f4faf9;
}

.callout--dark .section-copy {
  color: #cad9d6;
}

.source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
}

.source-link:hover {
  border-color: var(--line-strong);
}

.details-list {
  display: grid;
  gap: 0.75rem;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.15rem;
  font-weight: 700;
}

summary::-webkit-details-marker {
  display: none;
}

details > div {
  padding: 0 1.15rem 1rem;
  color: var(--muted);
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 1rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  position: relative;
  display: grid;
  gap: 0.55rem;
  padding: 1.1rem 1.15rem 1.1rem 3.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.steps h3 {
  margin: 0;
  font-size: 1.02rem;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 700;
}

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

.download-card {
  display: grid;
  gap: 0.9rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.download-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.download-card__title {
  display: grid;
  gap: 0.25rem;
}

.download-card__title strong {
  font-size: 1.08rem;
}

.download-card__title span {
  color: var(--muted);
  font-size: 0.94rem;
}

.download-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.download-card__links .button {
  min-width: 0;
}

.download-card__meta {
  display: grid;
  gap: 0.55rem;
  color: var(--muted);
  margin: 0;
}

.download-card__meta strong {
  color: var(--text);
}

.footer {
  padding: 2rem 0 2.4rem;
  border-top: 1px solid var(--line);
  background: #f0f4f3;
}

.footer__grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.5fr 1fr;
  align-items: start;
}

.footer__note {
  color: var(--muted);
  margin: 0;
}

.footer__links {
  display: grid;
  gap: 0.5rem;
}

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

.footer__links a:hover {
  color: var(--text);
}

.footer__small {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 80;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 17, 20, 0.64);
}

.modal__dialog {
  position: relative;
  z-index: 1;
  width: min(980px, calc(100% - 2rem));
  max-height: min(88vh, 920px);
  overflow: auto;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.28);
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.1rem 0.8rem;
  border-bottom: 1px solid var(--line);
}

.modal__header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.modal__header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.modal__close {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: var(--surface-2);
}

.modal__close:hover {
  background: var(--surface-3);
}

.modal__body {
  padding: 1.05rem 1.1rem 1.15rem;
  display: grid;
  gap: 1rem;
}

.download-modal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.download-qr {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, #f7fbfa);
  display: grid;
  gap: 0.9rem;
}

.download-qr__img {
  width: 100%;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 0.65rem;
}

.download-qr__img img {
}

.download-qr__title {
  display: grid;
  gap: 0.2rem;
}

.download-qr__title strong {
  font-size: 1.02rem;
}

.download-qr__title span {
  color: var(--muted);
  font-size: 0.94rem;
}

.download-qr__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.download-qr.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(15, 118, 110, 0.14), var(--shadow-soft);
}

.modal__fineprint {
  color: var(--muted);
  margin: 0;
  font-size: 0.94rem;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html.modal-open,
html.modal-open body {
  overflow: hidden;
}

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

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

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

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

  .footer__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-header__bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.85rem 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    padding: 2.4rem 0 1.2rem;
  }

  .hero h1 {
    font-size: 2.35rem;
  }

  .hero--home {
    min-height: auto;
    padding: 1.8rem 0 1rem;
    background: #101820;
  }

  .hero--home h1 {
    font-size: 2.4rem;
    max-width: 8ch;
  }

  .hero__layout {
    gap: 1.4rem;
  }

  .hero__visual {
    display: none;
  }

  .hero__badges {
    display: none;
  }

  .hero-badge {
    border-right: 0;
    padding-right: 0;
  }

  .hero--compact {
    min-height: auto;
    padding: 2.2rem 0 1.2rem;
    background: #101820;
  }

  .hero--compact::after {
    right: -18%;
    width: 118%;
    opacity: 0.1;
  }

  .download-grid,
  .download-modal-grid,
  .info-grid,
  .faq-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero__meta {
    display: flex;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    scroll-snap-type: x proximity;
  }

  .hero__meta .meta-chip {
    min-width: 184px;
    scroll-snap-align: start;
  }

  .hero__actions,
  .download-card__links,
  .download-qr__actions {
    display: grid;
  }

  .hero__actions .button,
  .download-card__links .button,
  .download-qr__actions .button,
  .nav-action {
    width: 100%;
  }

  .modal__header,
  .download-card__top {
    flex-direction: column;
  }

  .modal__dialog {
    width: min(100% - 1rem, 980px);
  }
}

@media (max-width: 460px) {
  .inner {
    width: min(var(--container), calc(100% - 1.2rem));
  }

  .section {
    padding: 3rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .button,
  .nav-action {
    width: 100%;
  }

  .hero__actions,
  .download-card__links,
  .download-qr__actions {
    display: grid;
  }
}