:root {
  --ink: #17191c;
  --paper: #f6f3ed;
  --white: #ffffff;
  --coral: #f15a4a;
  --coral-dark: #c83c30;
  --teal: #24a89a;
  --yellow: #f5c451;
  --muted: #686d73;
  --line: #dcd8cf;
  --soft: #ece8df;
  --shadow: 0 18px 50px rgba(23, 25, 28, 0.12);
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, Helvetica, sans-serif;
  line-height: 1.75;
}

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;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 8px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(23, 25, 28, 0.1);
  background: rgba(246, 243, 237, 0.94);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(calc(100% - 40px), var(--content));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.12rem;
  font-weight: 800;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a:not(.button) {
  position: relative;
  color: #383c40;
  font-size: 0.94rem;
  font-weight: 650;
}

.nav-links a:not(.button)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--coral);
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: 180ms ease;
}

.nav-links a[aria-current="page"]::after,
.nav-links a:not(.button):hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  padding: 10px;
  display: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--white);
  cursor: pointer;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  margin: 4px 0;
  display: block;
  background: currentColor;
  transition: 180ms ease;
}

.button {
  min-height: 46px;
  padding: 11px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  color: var(--white);
  background: var(--ink);
  font-size: 0.96rem;
  font-weight: 750;
  line-height: 1;
  box-shadow: 4px 4px 0 var(--coral);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--coral);
}

.button:focus-visible,
.menu-toggle:focus-visible,
.faq-question:focus-visible,
a:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

.button-light {
  color: var(--ink);
  background: var(--white);
}

.button-small {
  min-height: 40px;
  padding: 9px 16px;
  box-shadow: 3px 3px 0 var(--coral);
}

.hero {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-color: var(--paper);
  background-image: linear-gradient(rgba(23, 25, 28, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 25, 28, 0.055) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-grid {
  width: min(calc(100% - 40px), var(--content));
  min-height: 690px;
  margin: 0 auto;
  padding: 70px 0 60px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  align-items: center;
  gap: 70px;
}

.eyebrow {
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--coral-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 32px;
  height: 4px;
  background: var(--coral);
  content: "";
}

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

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.24;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: 4.75rem;
  font-weight: 900;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 680px;
  margin-bottom: 30px;
  color: #45494d;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.text-link {
  padding: 8px 2px;
  border-bottom: 2px solid var(--ink);
  font-weight: 750;
}

.hero-note {
  margin-top: 25px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.tag {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #4d5256;
  background: rgba(255, 255, 255, 0.75);
  font-size: 0.78rem;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-frame {
  position: relative;
  z-index: 2;
  width: min(310px, 82vw);
  padding: 11px;
  border: 4px solid var(--ink);
  border-radius: 28px;
  background: var(--ink);
  box-shadow: 18px 20px 0 var(--teal), var(--shadow);
  transform: rotate(2.5deg);
}

.phone-frame::before {
  position: absolute;
  top: 15px;
  left: 50%;
  z-index: 3;
  width: 72px;
  height: 16px;
  border-radius: 10px;
  background: var(--ink);
  content: "";
  transform: translateX(-50%);
}

.phone-frame img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 17px;
}

.comic-burst {
  position: absolute;
  right: -4px;
  bottom: 45px;
  z-index: 4;
  width: 132px;
  min-height: 90px;
  padding: 17px 14px;
  display: grid;
  place-items: center;
  border: 3px solid var(--ink);
  color: var(--ink);
  background: var(--yellow);
  font-size: 1rem;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
  transform: rotate(-6deg);
  clip-path: polygon(0 18%, 17% 20%, 10% 0, 32% 13%, 43% 0, 54% 15%, 74% 4%, 77% 24%, 100% 22%, 87% 44%, 100% 59%, 79% 64%, 84% 88%, 61% 78%, 49% 100%, 36% 81%, 14% 93%, 19% 68%, 0 60%, 15% 44%);
}

.section {
  padding: 92px 0;
}

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

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

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

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

.section-heading {
  margin-bottom: 42px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

h2 {
  margin-bottom: 0;
  font-size: 3rem;
  font-weight: 900;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
  font-weight: 850;
}

.section-index {
  flex: 0 0 auto;
  color: var(--coral);
  font-family: Consolas, Monaco, monospace;
  font-size: 0.82rem;
  font-weight: 700;
}

.ticker {
  color: var(--white);
  background: var(--coral-dark);
  border-bottom: 4px solid var(--ink);
  padding: 0 22px;
}

.ticker-viewport {
  width: min(100%, var(--content));
  margin: 0 auto;
  overflow: hidden;
}

.ticker-track {
  width: max-content;
  padding: 13px 0;
  display: flex;
  animation: ticker 24s linear infinite;
}

.ticker-track span {
  padding: 0 28px;
  font-weight: 800;
  white-space: nowrap;
}

.ticker-track span::after {
  margin-left: 56px;
  color: var(--yellow);
  content: "◆";
}

@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 260px;
  padding: 28px;
  border: 2px solid var(--ink);
  border-radius: 7px;
  background: var(--white);
  box-shadow: 7px 7px 0 var(--ink);
}

.feature-card:nth-child(1),
.feature-card:nth-child(4) {
  grid-column: span 7;
}

.feature-card:nth-child(2),
.feature-card:nth-child(3) {
  grid-column: span 5;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.feature-no {
  width: 42px;
  height: 42px;
  margin-bottom: 48px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 50%;
  color: var(--white);
  background: var(--coral);
  font-family: Consolas, Monaco, monospace;
  font-weight: 800;
}

.feature-card:nth-child(2) .feature-no,
.feature-card:nth-child(4) .feature-no {
  background: var(--teal);
}

.schedule {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border-top: 1px solid #414449;
  border-left: 1px solid #414449;
}

.schedule-item {
  min-height: 168px;
  padding: 20px 14px;
  border-right: 1px solid #414449;
  border-bottom: 1px solid #414449;
}

.schedule-item strong {
  color: var(--yellow);
  font-family: Consolas, Monaco, monospace;
  font-size: 0.8rem;
}

.schedule-item span {
  margin-top: 46px;
  display: block;
  color: #d9dade;
  font-size: 0.9rem;
}

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

.shot {
  margin: 0;
}

.shot-shell {
  padding: 8px;
  border: 2px solid var(--ink);
  border-radius: 9px;
  background: var(--ink);
  box-shadow: 6px 6px 0 var(--coral);
  transition: transform 180ms ease;
}

.shot:nth-child(even) .shot-shell {
  box-shadow: 6px 6px 0 var(--teal);
}

.shot:hover .shot-shell {
  transform: translateY(-6px);
}

.shot img {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 0 auto;
  border-radius: 5px;
}

.shot figcaption {
  padding: 20px 3px 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.shot figcaption strong {
  display: block;
  color: var(--ink);
  font-size: 1rem;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.path-card {
  min-height: 320px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 2px solid var(--ink);
  border-radius: 7px;
  background: var(--paper);
}

.path-card:nth-child(2) {
  color: var(--white);
  background: var(--ink);
}

.path-card p {
  color: var(--muted);
}

.path-card:nth-child(2) p {
  color: #cfd1d4;
}

.path-card .text-link {
  margin-top: auto;
}

.path-card:nth-child(2) .text-link {
  border-color: var(--yellow);
}

.review-grid {
  display: grid;
  grid-template-columns: 0.75fr repeat(3, 1fr);
  gap: 16px;
}

.score-panel,
.review-card {
  min-height: 260px;
  padding: 28px;
  border: 1px solid #d2cec6;
  border-radius: 7px;
  background: var(--white);
}

.score-panel {
  color: var(--white);
  background: var(--coral-dark);
}

.score {
  display: block;
  font-size: 4.6rem;
  font-weight: 900;
  line-height: 1;
}

.stars {
  color: var(--yellow);
  font-size: 1.2rem;
  letter-spacing: 0;
}

.review-card blockquote {
  margin: 0 0 28px;
  font-size: 1rem;
}

.review-card cite {
  color: var(--muted);
  font-size: 0.85rem;
  font-style: normal;
  font-weight: 700;
}

.faq-list {
  border-top: 2px solid var(--ink);
}

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

.faq-question {
  width: 100%;
  padding: 23px 4px;
  display: grid;
  grid-template-columns: 1fr 32px;
  align-items: center;
  gap: 24px;
  border: 0;
  color: var(--ink);
  background: transparent;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  line-height: 1;
  transition: transform 180ms ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-width: 850px;
  padding: 0 48px 24px 4px;
  color: var(--muted);
}

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

.download-band {
  padding: 72px 0;
  color: var(--white);
  background: var(--coral-dark);
}

.download-band-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 36px;
}

.download-band h2 {
  margin-bottom: 10px;
  font-size: 2.8rem;
}

.download-band p {
  margin-bottom: 0;
  color: #ffe7e3;
}

.site-footer {
  padding: 46px 0 28px;
  color: #c7c9cc;
  background: #101214;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 46px;
}

.footer-brand {
  color: var(--white);
}

.footer-title {
  margin-bottom: 12px;
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 8px;
}

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

.disclaimer {
  color: #969a9f;
  font-size: 0.78rem;
}

.footer-bottom {
  margin-top: 36px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid #303338;
  color: #888d92;
  font-size: 0.78rem;
}

.page-hero {
  padding: 86px 0 78px;
  border-bottom: 1px solid var(--line);
  background-color: var(--paper);
  background-image: linear-gradient(90deg, transparent 49px, rgba(241, 90, 74, 0.15) 50px, transparent 51px);
  background-size: 100px 100%;
}

.page-hero h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: 4rem;
}

.page-hero p:not(.eyebrow) {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  align-items: start;
  gap: 70px;
}

.article h2 {
  margin: 70px 0 28px;
  font-size: 2.35rem;
}

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

.article h3 {
  margin-top: 32px;
}

.article p,
.article li {
  color: #4f5458;
}

.article strong {
  color: var(--ink);
}

.article a:not(.button) {
  color: var(--coral-dark);
  border-bottom: 1px solid currentColor;
  font-weight: 750;
}

.steps {
  display: grid;
  gap: 20px;
}

.step {
  padding: 28px;
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 22px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--coral);
  border-radius: 6px;
  background: var(--white);
}

.step-number {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--ink);
  font-family: Consolas, Monaco, monospace;
  font-weight: 850;
}

.step h3 {
  margin-top: 2px;
}

.step p:last-child {
  margin-bottom: 0;
}

.notice {
  margin: 28px 0;
  padding: 22px 24px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: #fff4cc;
  box-shadow: 5px 5px 0 var(--ink);
}

.notice strong {
  display: block;
}

.check-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 14px 16px 14px 48px;
  border: 1px solid var(--line);
  background: var(--white);
}

.check-list li::before {
  position: absolute;
  top: 14px;
  left: 17px;
  color: var(--teal);
  content: "✓";
  font-weight: 900;
}

.article-shot {
  max-width: 400px;
  margin: 30px auto;
  padding: 8px;
  border: 2px solid var(--ink);
  border-radius: 9px;
  background: var(--ink);
  box-shadow: 8px 8px 0 var(--teal);
}

.article-shot img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 5px;
}

.side-nav {
  position: sticky;
  top: 98px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
}

.side-nav strong {
  margin-bottom: 13px;
  display: block;
}

.side-nav a {
  padding: 8px 0;
  display: block;
  border-bottom: 1px solid var(--soft);
  color: var(--muted);
  font-size: 0.88rem;
}

.side-nav a:hover {
  color: var(--coral-dark);
}

.side-nav .button {
  margin-top: 18px;
  color: var(--white);
}

.function-block {
  margin-bottom: 24px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
}

.function-block h3 {
  margin-top: 0;
}

.function-block ul {
  margin-bottom: 0;
}

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

.related-link {
  min-height: 150px;
  padding: 24px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: var(--white);
  box-shadow: 5px 5px 0 var(--coral);
}

.related-link strong {
  display: block;
  font-size: 1.08rem;
}

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

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

@media (max-width: 940px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    right: 0;
    left: 0;
    min-height: calc(100vh - 72px);
    padding: 38px 28px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
    background: var(--paper);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a:not(.button) {
    font-size: 1.25rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-visual {
    min-height: 520px;
  }

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

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

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

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

  .side-nav {
    position: static;
    order: -1;
  }
}

@media (max-width: 680px) {
  .nav-wrap,
  .container,
  .hero-grid {
    width: min(calc(100% - 28px), var(--content));
  }

  .section {
    padding: 68px 0;
  }

  .hero-grid {
    min-height: 0;
    padding: 54px 0 48px;
  }

  h1 {
    font-size: 2.6rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-copy > p:not(.eyebrow) {
    font-size: 1rem;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .hero-actions {
    align-items: stretch;
  }

  .text-link {
    width: fit-content;
  }

  .hero-visual {
    min-height: 480px;
  }

  .phone-frame {
    width: min(270px, 76vw);
    box-shadow: 11px 13px 0 var(--teal), var(--shadow);
  }

  .comic-burst {
    right: 0;
    width: 112px;
    font-size: 0.82rem;
  }

  .section-heading {
    align-items: flex-start;
  }

  .feature-card:nth-child(n) {
    grid-column: span 12;
  }

  .feature-no {
    margin-bottom: 32px;
  }

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

  .schedule-item {
    min-height: 130px;
  }

  .schedule-item span {
    margin-top: 28px;
  }

  .gallery-grid,
  .path-grid,
  .review-grid,
  .related-links,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .shot-shell {
    max-width: 340px;
    margin: 0 auto;
  }

  .shot figcaption {
    max-width: 340px;
    margin: 0 auto;
  }

  .download-band-inner {
    grid-template-columns: 1fr;
  }

  .download-band .button {
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .page-hero {
    padding: 60px 0;
  }

  .page-hero h1 {
    font-size: 2.6rem;
  }

  .article h2 {
    font-size: 1.85rem;
  }

  .download-band h2 {
    font-size: 2rem;
  }

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

  .function-block {
    padding: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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