:root {
  --orange: #ff6a00;
  --orange-dark: #d95700;
  --teal: #12a594;
  --ink: #151a1e;
  --ink-soft: #313b42;
  --paper: #f7f7f2;
  --white: #ffffff;
  --line: #d8ddd8;
  --muted: #68736f;
  --yellow: #f4c542;
  --shadow: 0 16px 44px rgba(21, 26, 30, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(21, 26, 30, 0.12);
  background: rgba(247, 247, 242, 0.96);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  line-height: 1;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 30px;
}

.site-nav a:not(.download-button) {
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 650;
}

.site-nav a[aria-current="page"] {
  color: var(--orange-dark);
}

.download-button,
.text-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 6px;
  padding: 10px 22px;
  color: var(--white);
  background: var(--ink);
  font-weight: 750;
  line-height: 1.3;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.download-button:hover,
.text-button:hover {
  transform: translateY(-2px);
  color: var(--ink);
  background: var(--yellow);
}

.download-button.accent {
  border-color: var(--orange);
  background: var(--orange);
}

.download-button.accent:hover {
  border-color: var(--ink);
  color: var(--white);
  background: var(--ink);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 6px;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  width: 19px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-toggle {
  flex-direction: column;
  gap: 5px;
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::before {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"]::after {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.hero::before {
  position: absolute;
  inset: 0 50% 0 0;
  border-right: 1px solid rgba(21, 26, 30, 0.08);
  background-image: linear-gradient(rgba(21, 26, 30, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(21, 26, 30, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  content: "";
}

.hero-grid {
  position: relative;
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
  align-items: center;
  gap: 70px;
  padding: 66px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
}

.eyebrow::before {
  width: 28px;
  height: 3px;
  background: var(--teal);
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  max-width: 700px;
  margin-bottom: 22px;
  font-size: 56px;
  font-weight: 900;
}

.hero-copy > p {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 14px;
  list-style: none;
}

.hero-notes li::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.hero-visual {
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
}

.phone-stage {
  position: relative;
  width: min(100%, 390px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-stage::before {
  position: absolute;
  width: 340px;
  height: 340px;
  border: 34px solid var(--yellow);
  border-radius: 50%;
  content: "";
}

.phone-stage::after {
  position: absolute;
  top: 28px;
  right: 0;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.hero-shot {
  position: relative;
  z-index: 2;
  width: 292px;
  max-width: 400px;
  height: auto;
  margin: auto 0;
  border: 9px solid var(--ink);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.hero-stamp {
  position: absolute;
  z-index: 3;
  right: -18px;
  bottom: 64px;
  width: 118px;
  min-height: 78px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 10px;
  background: var(--white);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.45;
  text-align: center;
}

.fact-strip {
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  color: var(--white);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.fact-item {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
  padding: 20px 30px;
}

.fact-item:last-child {
  border-right: 0;
}

.fact-item strong {
  color: var(--yellow);
  font-size: 19px;
}

.fact-item span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.section {
  padding: 92px 0;
}

.section.white {
  background: var(--white);
}

.section.dark {
  color: var(--white);
  background: var(--ink);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 44px;
}

.section-head h2,
.content-title h2 {
  max-width: 720px;
  margin-bottom: 0;
  font-size: 38px;
  font-weight: 900;
}

.section-kicker {
  flex: 0 0 auto;
  color: var(--orange-dark);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.dark .section-kicker {
  color: var(--yellow);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.workflow-item {
  min-height: 300px;
  border-right: 1px solid var(--ink);
  padding: 34px;
}

.workflow-item:last-child {
  border-right: 0;
}

.step-no {
  display: block;
  margin-bottom: 62px;
  color: var(--orange-dark);
  font-family: Consolas, Monaco, monospace;
  font-size: 14px;
  font-weight: 700;
}

.workflow-item h3 {
  margin-bottom: 12px;
  font-size: 25px;
}

.workflow-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.screenshot-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.screen-figure {
  margin: 0;
}

.screen-figure img {
  width: 100%;
  max-width: 400px;
  height: auto;
  aspect-ratio: 0.562;
  border: 7px solid var(--ink);
  border-radius: 24px;
  object-fit: cover;
  object-position: top;
  background: #0f1a2c;
}

.screen-figure figcaption {
  padding-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.screen-figure figcaption strong {
  display: block;
  color: var(--ink);
  font-size: 16px;
}

.feature-split {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  align-items: start;
  gap: 80px;
}

.feature-intro {
  position: sticky;
  top: 110px;
}

.feature-intro h2 {
  margin-bottom: 22px;
  font-size: 40px;
}

.feature-intro p {
  color: rgba(255, 255, 255, 0.67);
}

.feature-list {
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.feature-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  padding: 28px 0;
}

.feature-row > span {
  color: var(--teal);
  font-family: Consolas, Monaco, monospace;
  font-size: 14px;
}

.feature-row h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.feature-row p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.68);
}

.deep-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.deep-link {
  min-height: 270px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--ink);
  border-radius: 8px;
  padding: 34px;
  background: var(--white);
}

.deep-link .label {
  margin-bottom: auto;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.deep-link h3 {
  margin: 44px 0 10px;
  font-size: 27px;
}

.deep-link p {
  color: var(--muted);
}

.deep-link strong {
  border-bottom: 2px solid var(--orange);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review {
  min-height: 245px;
  margin: 0;
  border-left: 5px solid var(--teal);
  padding: 30px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(21, 26, 30, 0.06);
}

.review p {
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: 17px;
}

.review footer {
  color: var(--muted);
  font-size: 13px;
}

.faq-list {
  border-top: 1px solid var(--ink);
}

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

.faq-question {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 32px;
  align-items: center;
  gap: 18px;
  border: 0;
  padding: 24px 0;
  color: var(--ink);
  background: transparent;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.faq-question::after {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  content: "+";
  font-size: 20px;
  font-weight: 400;
}

.faq-question[aria-expanded="true"]::after {
  content: "−";
}

.faq-answer {
  max-width: 870px;
  padding: 0 52px 24px 0;
  color: var(--muted);
}

.faq-answer[hidden] {
  display: none;
}

.bottom-download {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--yellow);
}

.bottom-download .container {
  min-height: 230px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.bottom-download h2 {
  margin-bottom: 8px;
  font-size: 38px;
}

.bottom-download p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.site-footer {
  padding: 48px 0 30px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--ink);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  padding-bottom: 34px;
}

.site-footer .brand {
  margin-bottom: 18px;
  color: var(--white);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 18px 28px;
}

.footer-links a:hover {
  color: var(--yellow);
}

.disclaimer {
  max-width: 760px;
  margin-bottom: 0;
}

.copyright {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 22px;
  color: rgba(255, 255, 255, 0.48);
}

.page-hero {
  border-bottom: 1px solid var(--ink);
  background: var(--white);
}

.page-hero .container {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-top: 62px;
  padding-bottom: 62px;
}

.page-hero h1 {
  max-width: 900px;
  margin-bottom: 20px;
  font-size: 50px;
}

.page-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.page-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-index a {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 7px 12px;
  background: var(--paper);
  font-size: 13px;
  font-weight: 700;
}

.guide-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 70px;
}

.guide-aside {
  position: sticky;
  top: 105px;
  align-self: start;
  border-top: 3px solid var(--orange);
  padding-top: 22px;
}

.guide-aside strong {
  display: block;
  margin-bottom: 14px;
}

.guide-aside a {
  display: block;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
  color: var(--muted);
  font-size: 14px;
}

.guide-aside a:hover {
  color: var(--orange-dark);
}

.guide-step {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 24px;
  border-top: 1px solid var(--ink);
  padding: 42px 0 50px;
  scroll-margin-top: 100px;
}

.guide-step:first-child {
  padding-top: 0;
  border-top: 0;
}

.guide-step .number {
  color: var(--orange-dark);
  font-family: Consolas, Monaco, monospace;
  font-size: 34px;
  font-weight: 800;
}

.guide-step h2 {
  margin-bottom: 16px;
  font-size: 29px;
}

.guide-step h3 {
  margin: 24px 0 8px;
  font-size: 19px;
}

.guide-step p,
.guide-step li {
  color: var(--ink-soft);
}

.guide-step ul,
.guide-step ol {
  margin: 0;
  padding-left: 22px;
}

.inline-screen {
  width: min(100%, 360px);
  max-width: 400px;
  height: auto;
  margin-top: 24px;
  border: 7px solid var(--ink);
  border-radius: 24px;
}

.notice {
  margin: 24px 0;
  border-left: 5px solid var(--teal);
  padding: 18px 22px;
  background: #e8f5f2;
  color: var(--ink-soft);
}

.feature-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.matrix-item {
  min-height: 220px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 30px;
}

.matrix-item small {
  color: var(--teal);
  font-weight: 800;
}

.matrix-item h2,
.matrix-item h3 {
  margin: 24px 0 10px;
  font-size: 23px;
}

.matrix-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.troubleshoot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 38px;
}

.troubleshoot-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--white);
}

.troubleshoot-item strong {
  display: block;
  margin-bottom: 8px;
}

.troubleshoot-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 960px) {
  .site-nav {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    align-items: stretch;
    border-bottom: 1px solid var(--ink);
    padding: 22px 20px 30px;
    background: var(--paper);
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: grid;
  }

  .site-nav a:not(.download-button) {
    border-bottom: 1px solid var(--line);
    padding: 10px 2px;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1fr 330px;
    gap: 30px;
  }

  h1 {
    font-size: 46px;
  }

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

  .fact-item:nth-child(2) {
    border-right: 0;
  }

  .fact-item:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .feature-split {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .feature-intro,
  .guide-aside {
    position: static;
  }

  .guide-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .guide-aside {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 20px;
  }

  .guide-aside strong {
    grid-column: 1 / -1;
  }

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

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1160px);
  }

  .nav-wrap {
    min-height: 64px;
  }

  .site-nav {
    top: 64px;
  }

  .brand {
    font-size: 18px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .hero::before {
    inset: 0;
    border-right: 0;
  }

  .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 34px;
    padding: 48px 0 54px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-visual {
    min-height: 430px;
    order: 2;
  }

  h1,
  .page-hero h1 {
    font-size: 39px;
  }

  .hero-copy > p,
  .page-hero p {
    font-size: 16px;
  }

  .hero-shot {
    width: 238px;
  }

  .phone-stage::before {
    width: 280px;
    height: 280px;
    border-width: 28px;
  }

  .phone-stage::after {
    right: 16px;
    width: 58px;
    height: 58px;
  }

  .hero-stamp {
    right: 8px;
    bottom: 50px;
  }

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

  .fact-item {
    min-height: 96px;
    padding: 16px;
  }

  .section {
    padding: 66px 0;
  }

  .section-head {
    display: block;
    margin-bottom: 32px;
  }

  .section-head h2,
  .content-title h2,
  .feature-intro h2,
  .bottom-download h2 {
    font-size: 31px;
  }

  .section-kicker {
    display: block;
    margin-top: 10px;
  }

  .workflow-grid,
  .deep-links,
  .review-grid,
  .feature-matrix {
    grid-template-columns: 1fr;
  }

  .workflow-item {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
    padding: 28px 8px;
  }

  .workflow-item:last-child {
    border-bottom: 0;
  }

  .step-no {
    margin-bottom: 28px;
  }

  .screenshot-rail {
    width: calc(100vw - 14px);
    grid-template-columns: repeat(4, 245px);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    padding-right: 14px;
    padding-bottom: 16px;
  }

  .screen-figure img {
    width: 245px;
  }

  .feature-row {
    grid-template-columns: 38px 1fr;
  }

  .bottom-download .container {
    min-height: 270px;
    display: block;
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .bottom-download .download-button {
    margin-top: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .copyright {
    display: block;
  }

  .page-hero .container {
    min-height: 390px;
  }

  .guide-aside {
    grid-template-columns: 1fr 1fr;
  }

  .guide-step {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .guide-step .number {
    font-size: 22px;
  }

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

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}