/* 游咔 — 棱角风 · 层次靠角标/色块/边线，阴影仅点缀 */
:root {
  --black: #0a0a0a;
  --black-soft: #1c1c1c;
  --white: #ffffff;
  --gray-50: #f5f5f5;
  --gray-100: #ebebeb;
  --gray-200: #d4d4d4;
  --gray-400: #888888;
  --gray-600: #555555;
  --pink: #e68aa9;
  --pink-light: #f8d4e0;
  --pink-deep: #c96d8f;
  --accent: #d43f72;
  --accent-deep: #b82f5e;
  --border: 2px solid var(--black);
  --border-light: 1px solid var(--gray-200);
  --font-en: "IBM Plex Sans", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "IBM Plex Sans", system-ui, sans-serif;
  --max: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--black);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* 英文 — 仅英雄区等处按需使用 */
.title-en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* 区块角标标签 */
.section-tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  margin-bottom: 0.85rem;
  border: var(--border);
  background: var(--pink-light);
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
}

/* 角标 */
.corner-label {
  position: absolute;
  padding: 0.4rem 0.7rem;
  border: var(--border);
  background: var(--accent);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  z-index: 2;
}

.corner-label--hero {
  bottom: 6%;
  left: -4px;
  border-left: 4px solid var(--black);
}

.corner-label--cta {
  top: 0;
  right: 0;
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
}

.corner-tag {
  position: absolute;
  top: 0;
  right: 0;
  padding: 0.35rem 0.6rem;
  border-left: var(--border);
  border-bottom: var(--border);
  background: var(--black);
  color: var(--pink);
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 800;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: var(--white);
  border-bottom: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 900;
  font-size: 1.05rem;
}

.brand img {
  width: 38px;
  height: 38px;
  border: var(--border);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-600);
}

.nav-links a:hover { color: var(--accent); }

.nav-cta {
  padding: 0.5rem 1.15rem;
  border: var(--border);
  background: var(--accent);
  color: #fff !important;
  font-weight: 700;
  font-size: 0.88rem;
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--accent-deep); }

.menu-toggle {
  display: none;
  border: var(--border);
  background: var(--white);
  padding: 0.35rem 0.45rem;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: var(--black);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: 6.5rem 0 4rem;
  overflow: hidden;
  background: var(--white);
  border-bottom: var(--border);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 48%, var(--pink-light) 48%, var(--pink-light) 52%, transparent 52%),
    repeating-linear-gradient(0deg, transparent, transparent 47px, var(--gray-100) 47px, var(--gray-100) 48px),
    repeating-linear-gradient(90deg, transparent, transparent 47px, var(--gray-100) 47px, var(--gray-100) 48px);
  opacity: 0.45;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.hero-brand img {
  width: 64px;
  height: 64px;
  border: var(--border);
  flex-shrink: 0;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.2rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--black);
}

.hero-tagline {
  margin: 0.5rem 0 0;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.35;
}

.hero-lead {
  margin: 0 0 1.75rem;
  padding-left: 1rem;
  border-left: 4px solid var(--accent);
  font-size: 1.08rem;
  color: var(--gray-600);
  max-width: 28em;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.75rem;
  border: var(--border);
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 5px 5px 0 var(--black);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn-primary:hover {
  background: var(--accent-deep);
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--black);
}

.btn-primary svg { width: 18px; height: 18px; }
.btn-primary--lg { padding: 1.05rem 2.1rem; font-size: 1.05rem; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.95rem 1.5rem;
  border: var(--border);
  background: var(--white);
  color: var(--black);
  font-weight: 700;
  transition: background 0.2s, color 0.2s;
}

.btn-outline:hover {
  background: var(--pink-light);
  color: var(--accent-deep);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  padding: 0.5rem 0.85rem;
  border: var(--border-light);
  border-bottom: 2px solid var(--accent);
  background: var(--gray-50);
  font-size: 0.84rem;
  color: var(--gray-600);
}

.hero-tags strong {
  color: var(--black);
  font-weight: 700;
  margin-right: 0.3rem;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 460px;
}

.hero-frame {
  position: relative;
  z-index: 1;
  width: 280px;
  border: var(--border);
  background: var(--black);
  outline: 4px solid var(--pink-light);
  outline-offset: 6px;
}

.hero-frame-bar {
  display: flex;
  gap: 6px;
  padding: 8px 10px;
  background: var(--black-soft);
  border-bottom: var(--border);
}

.hero-frame-bar span {
  width: 10px;
  height: 10px;
  background: var(--pink);
  border: 1px solid var(--black);
}

.hero-frame img { width: 100%; }

/* Sections */
.section {
  padding: 5rem 0;
  border-top: var(--border);
}

.section--white { background: var(--white); }
.section--gray { background: var(--gray-50); }
.section--pink {
  background: var(--pink-light);
  background-image: linear-gradient(45deg, rgba(212, 63, 114, 0.05) 25%, transparent 25%, transparent 75%, rgba(212, 63, 114, 0.05) 75%);
  background-size: 24px 24px;
}
.section--trust { padding: 3rem 0; background: var(--white); border-top: 0; }
.section--cta {
  padding: 5rem 0 5.5rem;
  background: var(--black);
  border-top: 0;
}

.section-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 2.75rem;
}

.section-head h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section-head p {
  margin: 0;
  color: var(--gray-600);
  font-size: 1rem;
  line-height: 1.75;
}

.story-block {
  max-width: 720px;
  margin: 0 auto;
}

.story-block .section-tag {
  display: block;
  margin-bottom: 0.5rem;
}

.story-block h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.story-block p {
  margin: 0 0 1rem;
  color: var(--gray-600);
  font-size: 1rem;
  line-height: 1.85;
}

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

.section-head--line h2 {
  display: inline-block;
  padding-bottom: 0.65rem;
  border-bottom: 3px solid var(--accent);
}

.section-head--score {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: none;
  text-align: left;
  margin-bottom: 2.25rem;
}

.section-head--score > div:first-child { max-width: 520px; }

.score-badge {
  flex-shrink: 0;
  padding: 1rem 1.35rem;
  border: var(--border);
  border-top: 4px solid var(--accent);
  background: var(--pink-light);
  text-align: center;
}

.score-badge strong {
  display: block;
  font-family: var(--font-en);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.score-badge span {
  font-size: 0.82rem;
  color: var(--gray-600);
}

/* Features — 网格线 + 角标 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: var(--border);
}

.feature-card {
  position: relative;
  padding: 1.75rem 1.65rem;
  padding-top: 2.25rem;
  border-right: var(--border);
  border-bottom: var(--border);
  background: var(--white);
  transition: background 0.2s;
}

.feature-card:nth-child(2n) { border-right: 0; }
.feature-card:nth-child(n+3) { border-bottom: 0; }
.feature-card:hover { background: var(--pink-light); }

.feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}

.feature-card:hover::before { opacity: 1; }

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  font-weight: 800;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* Screenshots */
.shot-strip {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1.5rem 1.25rem 1.75rem;
  border: var(--border);
  border-top: 4px solid var(--accent);
  background: var(--white);
}

.shot-item {
  margin: 0;
  text-align: center;
  flex: 0 0 auto;
}

.shot-item img {
  width: auto;
  max-height: 340px;
  margin-inline: auto;
  border: var(--border-light);
  transition: border-color 0.2s, transform 0.2s;
}

.shot-item:hover img {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.shot-item figcaption {
  margin-top: 0.65rem;
  padding: 0.25rem 0.5rem;
  display: inline-block;
  border: var(--border-light);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gray-600);
}

/* Trust — 色块分割 */
.trust-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: var(--border);
  background: var(--black);
}

.trust-item {
  position: relative;
  padding: 1.5rem 1rem 1.35rem;
  text-align: center;
  border-right: 2px solid rgba(255, 255, 255, 0.12);
  color: var(--white);
}

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

.trust-mark {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--pink);
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--pink);
  letter-spacing: 0.08em;
}

.trust-item strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 0.15rem;
}

.trust-item p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--gray-400);
}

/* Steps */
.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: var(--border);
}

.step-card {
  position: relative;
  padding: 1.75rem 1.5rem 1.5rem;
  border-right: var(--border);
  background: var(--white);
  overflow: hidden;
}

.step-card:last-child { border-right: 0; }

.step-num {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.55rem;
  border: var(--border);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1;
}

.step-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.08rem;
  font-weight: 800;
}

.step-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--gray-600);
}

/* Reviews — 左边线区分 */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.review-card {
  padding: 1.25rem;
  border: var(--border-light);
  border-left: 4px solid var(--pink-deep);
  background: var(--white);
  transition: border-left-color 0.2s, background 0.2s;
}

.review-card:hover {
  border-left-color: var(--accent);
  background: var(--gray-50);
}

.review-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.45rem;
}

.review-avatar {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: var(--border);
  background: var(--pink-light);
  color: var(--accent-deep);
  font-weight: 800;
  font-size: 0.88rem;
  flex-shrink: 0;
}

.review-name { font-weight: 700; font-size: 0.9rem; }

.review-head time {
  display: block;
  font-size: 0.72rem;
  color: var(--gray-400);
}

.review-stars {
  color: #e6a800;
  font-size: 0.8rem;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.review-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* FAQ */
.faq-panel {
  max-width: 780px;
  margin-inline: auto;
  padding: 0.25rem 1.5rem;
  border: var(--border);
  border-left: 4px solid var(--accent);
  background: var(--white);
}

.faq-item { border-bottom: var(--border-light); }
.faq-item:last-child { border-bottom: 0; }

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.15rem 2rem 1.15rem 0;
  font-weight: 800;
  font-size: 0.98rem;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: var(--border-light);
  color: var(--accent);
  font-size: 1.1rem;
}

.faq-item[open] summary::after { content: "−"; background: var(--pink-light); }

.faq-item p {
  margin: 0 0 1rem;
  color: var(--gray-600);
  font-size: 0.92rem;
  padding-right: 1.5rem;
  line-height: 1.75;
}

/* CTA — 仅此处保留硬阴影 */
.cta-panel {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  padding: 3.25rem 2rem;
  border: 3px solid var(--pink);
  background: var(--black-soft);
  box-shadow: 8px 8px 0 var(--accent);
}

.cta-panel img {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.25rem;
  border: var(--border);
  outline: 3px solid var(--pink);
  outline-offset: 4px;
}

.cta-panel h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
}

.cta-panel p {
  margin: 0 auto 1.75rem;
  color: var(--gray-400);
  max-width: 26em;
}

/* Footer */
.site-footer {
  padding: 1.75rem 0 2rem;
  background: var(--black);
  color: var(--gray-400);
  font-size: 0.85rem;
  border-top: 3px solid var(--accent);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
}

.footer-links { display: flex; gap: 1.1rem; }
.footer-links a:hover { color: var(--pink); }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-brand { justify-content: center; }
  .hero-lead {
    margin-inline: auto;
    border-left: 0;
    border-top: 4px solid var(--accent);
    padding-left: 0;
    padding-top: 1rem;
  }
  .hero-actions { justify-content: center; }
  .hero-tags { display: none; }

  .hero-visual {
    min-height: 360px;
    margin-top: 1.25rem;
    order: unset;
  }

  .hero-copy { order: unset; }

  .hero-frame { width: min(260px, 72vw); }

  .corner-label--hero {
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
  }

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

  .feature-card,
  .step-card {
    border-right: 0;
    border-bottom: var(--border);
  }

  .feature-card:last-child,
  .step-card:last-child { border-bottom: 0; }

  .review-grid { grid-template-columns: 1fr; }
  .trust-panel { grid-template-columns: 1fr 1fr; }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(1),
  .trust-item:nth-child(3) { border-bottom: 2px solid rgba(255, 255, 255, 0.12); }

  .section-head--score {
    flex-direction: column;
    align-items: flex-start;
  }

  .shot-strip {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0.85rem;
    padding: 1.25rem 1rem 1.5rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 1rem;
    scrollbar-width: none;
  }

  .shot-strip::-webkit-scrollbar { display: none; }

  .shot-item {
    scroll-snap-align: center;
    scroll-snap-stop: always;
    min-width: 42%;
    max-width: 180px;
  }

  .shot-item img { max-height: 300px; }
  .shot-item:hover img { transform: none; }

  .nav-links { display: none; }

  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 1.25rem;
    right: 1.25rem;
    background: var(--white);
    border: var(--border);
    padding: 1rem;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .menu-toggle { display: block; }
}

@media (max-width: 600px) {
  .container { width: min(100% - 1.6rem, var(--max)); }
  .section { padding: 3.75rem 0; }
  .hero h1 { font-size: clamp(2.6rem, 12vw, 3.6rem); }
  .trust-panel { grid-template-columns: 1fr; }
  .trust-item {
    border-right: 0;
    border-bottom: 2px solid rgba(255, 255, 255, 0.12);
  }
  .trust-item:last-child { border-bottom: 0; }
  .shot-item { min-width: 58%; max-width: 200px; }
  .shot-item img { max-height: 260px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-outline { justify-content: center; }
  .cta-panel { box-shadow: 5px 5px 0 var(--accent); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* 右下角悬浮下载 */
.fab-dl {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.72rem 1.15rem;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  border: 2px solid var(--black);
  box-shadow: 4px 4px 0 var(--black);
  transition: transform 0.15s, background 0.15s;
}
.fab-dl:hover { background: var(--accent-deep); transform: translate(-1px, -1px); color: #fff; box-shadow: 5px 5px 0 var(--black); }
.fab-dl svg { width: 17px; height: 17px; }
@media (max-width: 600px) {
  .fab-dl span { display: none; }
  .fab-dl { padding: 0.75rem; }
}