/* ============================================================
   seelf.cn — visual language aligned with ykai marketing site
   Act 1: dark cinematic hero · Act 2: cool paper editorial
   ============================================================ */

:root {
  color-scheme: light;

  --ink: #151f33;
  --ink-2: #47546a;
  --muted: #728095;
  --paper: #f3f6fb;
  --surface: #fbfdfc;
  --surface-2: #e9eff6;
  --white: #ffffff;
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --accent-soft: rgba(14, 165, 233, 0.12);
  --line: rgba(23, 32, 51, 0.08);
  --line-soft: rgba(23, 32, 51, 0.04);

  --hero-void: #03040b;
  --footer: #162033;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Inter",
    "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 15px;
  --shadow-soft: 0 28px 90px rgba(21, 31, 51, 0.09);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: -0.01em;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  width: min(100% - 48px, 1160px);
  margin-inline: auto;
}

.skip-nav {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 300;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
}

.skip-nav:focus {
  left: 0;
}

/* ------------------------------------------------------------
   Header — transparent over dark, frosted when solid
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 72px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background 0.35s var(--ease),
    border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.site-header.is-solid {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line-soft);
  box-shadow: 0 8px 30px rgba(21, 31, 51, 0.04);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 0;
  flex: none;
}

/* Light mark on dark hero; deepen on solid / always-solid header */
.site-header.is-solid .brand img,
.site-header.always-solid .brand img {
  filter: brightness(0) saturate(100%) invert(14%) sepia(18%) saturate(1200%)
    hue-rotate(185deg) brightness(92%) contrast(95%);
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.brand-name .cn {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: rgba(255, 255, 255, 0.94);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.25s ease;
}

.brand-name .en {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(186, 230, 253, 0.55);
  transition: color 0.25s ease;
}

.site-header.is-solid .brand-name .cn {
  color: var(--ink);
}

.site-header.is-solid .brand-name .en {
  color: var(--muted);
}

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

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.78);
  transition:
    color 0.16s ease,
    background 0.16s ease;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-links a[aria-current="page"] {
  color: #fff;
  background: rgba(14, 165, 233, 0.22);
}

.site-header.is-solid .nav-links a {
  color: var(--ink-2);
}

.site-header.is-solid .nav-links a:hover {
  color: var(--ink);
  background: var(--surface-2);
}

.site-header.is-solid .nav-links a[aria-current="page"] {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.site-header.is-solid .nav-links a.btn-primary,
.site-header.is-solid .nav-links a.btn-primary[aria-current="page"] {
  color: #fff;
  background: var(--accent);
}

.site-header.is-solid .nav-links a.btn-primary:hover {
  color: #fff;
  background: var(--accent-dark);
}

.nav-cta {
  margin-left: 10px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
}

.site-header.is-solid .nav-toggle {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.nav-toggle span {
  display: block;
  width: 15px;
  height: 2px;
  margin: 3px auto;
  border-radius: 2px;
  background: currentColor;
}

/* Subpages without dark hero start solid */
.site-header.always-solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line-soft);
}

.site-header.always-solid .brand-name .cn {
  color: var(--ink);
}

.site-header.always-solid .brand-name .en {
  color: var(--muted);
}

.site-header.always-solid .nav-links a {
  color: var(--ink-2);
}

.site-header.always-solid .nav-links a:hover {
  color: var(--ink);
  background: var(--surface-2);
}

.site-header.always-solid .nav-links a[aria-current="page"] {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.site-header.always-solid .nav-links a.btn-primary,
.site-header.always-solid .nav-links a.btn-primary[aria-current="page"] {
  color: #fff;
  background: var(--accent);
}

.site-header.always-solid .nav-links a.btn-primary:hover {
  color: #fff;
  background: var(--accent-dark);
}

.site-header.always-solid .nav-toggle {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

/* ------------------------------------------------------------
   Buttons — pill, ykai style
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  border: 0;
  transition:
    transform 0.16s ease,
    box-shadow 0.16s ease,
    background 0.16s ease,
    border-color 0.16s ease,
    color 0.16s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 28px rgba(14, 165, 233, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  background: var(--accent-dark);
}

.btn-light {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

.btn-light:hover {
  transform: translateY(-1px) scale(1.02);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--line);
  color: var(--ink-2);
}

.btn-ghost:hover {
  border-color: rgba(14, 165, 233, 0.35);
  color: var(--ink);
}

.btn-sm {
  min-height: 36px;
  padding: 0 18px;
  font-size: 13.5px;
}

.site-header:not(.is-solid):not(.always-solid) .nav-cta.btn-primary {
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.site-header:not(.is-solid):not(.always-solid) .nav-cta.btn-primary:hover {
  background: #fff;
}

/* ------------------------------------------------------------
   Hero cinema — full viewport dark
   ------------------------------------------------------------ */
.hero-cinema {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 96px 0 80px;
  background: var(--hero-void);
  overflow: hidden;
  color: #fff;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-cinema::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(56, 189, 248, 0.4),
    transparent
  );
}

.hero-cinema-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(6, 182, 212, 0.22);
  background: rgba(8, 47, 73, 0.45);
  color: #67e8f9;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.02em;
  margin-bottom: 28px;
}

.hero-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #22d3ee;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

.hero-cinema h1 {
  font-size: clamp(40px, 6.2vw, 72px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 22px;
}

.hero-cinema h1 .grad {
  display: inline-block;
  background: linear-gradient(115deg, #67e8f9 0%, #bae6fd 45%, #a5b4fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-cinema .hero-sub {
  max-width: 560px;
  margin: 0 auto 36px;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.85;
  color: rgba(226, 232, 240, 0.72);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   Sections — cool paper editorial
   ------------------------------------------------------------ */
.section {
  padding: 120px 0;
  background: var(--paper);
}

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

.section.white {
  background: #fff;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.section-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 720px;
}

.section-title .hl {
  color: var(--accent-dark);
}

.section-desc {
  margin-top: 18px;
  max-width: 560px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.center {
  text-align: center;
}

.center .kicker {
  justify-content: center;
}

.center .section-title,
.center .section-desc {
  margin-inline: auto;
}

/* Pillars — positioning strip */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 64px;
  border-top: 1px solid var(--line);
}

.pillars > div {
  padding: 28px 28px 28px 0;
  border-bottom: 1px solid var(--line-soft);
}

.pillars > div:not(:last-child) {
  border-right: 1px solid var(--line-soft);
  padding-right: 32px;
  margin-right: 32px;
}

.pillars b {
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.pillars span {
  font-size: 16px;
  font-weight: 650;
  line-height: 1.55;
  color: var(--ink);
}

/* Duo */
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  margin-top: 72px;
}

.duo-col .no {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 14px;
}

.duo-col h3 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 12px;
}

.duo-col > p {
  font-size: 15.5px;
  color: var(--ink-2);
  margin-bottom: 24px;
}

.duo-list {
  list-style: none;
  border-top: 1px solid var(--line);
  margin-bottom: 26px;
}

.duo-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
}

.duo-list b {
  font-weight: 700;
  color: var(--ink);
}

.duo-list span {
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-dark);
  transition: gap 0.2s var(--ease);
}

.text-link:hover {
  gap: 10px;
  color: var(--accent);
}

/* Steps */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 72px;
}

.steps::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(14, 165, 233, 0.25),
    transparent
  );
}

.step {
  position: relative;
  text-align: center;
}

.step .badge {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, 0.2);
  color: var(--accent-dark);
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.08);
  transition: transform 0.25s var(--ease);
}

.step:hover .badge {
  transform: translateY(-3px);
}

.step h3 {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 10px;
}

.step p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
  max-width: 300px;
  margin-inline: auto;
}

/* Tracks */
.tracks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 56px;
}

.track {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--line-soft);
  transition: transform 0.25s var(--ease);
}

.track:hover {
  transform: translateY(-4px);
}

.track-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 750;
  margin-bottom: 18px;
}

.track h3 {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 14px;
}

.track ul {
  list-style: none;
}

.track li {
  position: relative;
  padding: 7px 0 7px 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.track li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #7dd3fc;
}

/* Rows */
.rows {
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.row {
  display: grid;
  grid-template-columns: 88px minmax(180px, 280px) 1fr;
  gap: 24px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.row .no {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 4px;
}

.row h3 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.4;
}

.row p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* Trust / scenario strip */
.trust {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 56px;
}

.trust > div {
  border-top: 2px solid rgba(14, 165, 233, 0.25);
  padding-top: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.trust b {
  display: block;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}

/* Product shot */
.shot {
  position: relative;
  margin-top: 0;
}

.shot-stage {
  position: relative;
  max-width: 980px;
  margin-inline: auto;
  padding-bottom: 40px;
}

.shot-browser {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.shot-browser-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-soft);
  background: #f8fafc;
}

.shot-browser-bar i {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #e2e8f0;
}

.shot-browser-bar .url {
  margin-left: 12px;
  padding: 4px 14px;
  border-radius: 999px;
  background: #fff;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}

.shot-app {
  display: grid;
  grid-template-columns: 190px 1fr;
  min-height: 420px;
}

.shot-side {
  border-right: 1px solid var(--line-soft);
  background: #f8fafc;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.shot-side .logo-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 16px;
}

.shot-side .logo-row i {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: linear-gradient(135deg, #38bdf8, #0284c7);
}

.shot-side .logo-row b {
  font-size: 13px;
  font-weight: 750;
  color: var(--ink);
}

.shot-side .item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border-radius: 9px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
}

.shot-side .item i {
  width: 14px;
  height: 14px;
  border-radius: 5px;
  background: #e2e8f0;
  flex: none;
}

.shot-side .item.on {
  background: rgba(14, 165, 233, 0.1);
  color: var(--accent-dark);
}

.shot-side .item.on i {
  background: var(--accent);
}

.shot-main {
  padding: 24px 28px 28px;
}

.shot-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.shot-head h3 {
  font-size: 16.5px;
  font-weight: 800;
  color: var(--ink);
}

.shot-head .chip {
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 11.5px;
  font-weight: 700;
}

.shot-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.shot-stat {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 13px 15px;
  background: #fff;
}

.shot-stat b {
  display: block;
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.shot-stat span {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}

.shot-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
}

.shot-card {
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: #fff;
  padding: 17px 18px;
}

.shot-card .t {
  font-size: 12.5px;
  font-weight: 750;
  color: var(--ink);
  margin-bottom: 13px;
}

.meter {
  display: grid;
  grid-template-columns: 44px 1fr 34px;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
}

.meter dt {
  font-size: 12px;
  font-weight: 650;
  color: var(--ink-2);
}

.meter .bar {
  height: 7px;
  border-radius: 5px;
  background: #e2e8f0;
  overflow: hidden;
}

.meter .bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 5px;
  background: linear-gradient(90deg, #7dd3fc, var(--accent));
  transition: width 1s var(--ease);
}

.meter .bar i.warn {
  background: linear-gradient(90deg, #fcd34d, #f59e0b);
}

.is-in .meter .bar i {
  width: var(--w);
}

.meter dd {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.shot-tasks {
  display: grid;
  gap: 9px;
}

.shot-task {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--paper);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
}

.shot-task i {
  width: 15px;
  height: 15px;
  border-radius: 999px;
  border: 1.5px solid #bae6fd;
  flex: none;
}

.shot-task.done {
  color: var(--muted);
}

.shot-task.done i {
  background: var(--accent);
  border-color: var(--accent);
  position: relative;
}

.shot-task.done i::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1.5px;
  width: 4px;
  height: 7px;
  border: solid #fff;
  border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}

.shot-task .tag {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 999px;
}

.shot-phone {
  position: absolute;
  right: -12px;
  bottom: 0;
  width: 218px;
  border-radius: 30px;
  background: #0c1122;
  padding: 9px;
  box-shadow: 0 30px 60px -20px rgba(8, 15, 40, 0.45);
}

.shot-phone-screen {
  border-radius: 22px;
  background: #fff;
  overflow: hidden;
}

.shot-phone-notch {
  display: flex;
  justify-content: center;
  padding: 7px 0 5px;
}

.shot-phone-notch i {
  width: 56px;
  height: 5px;
  border-radius: 999px;
  background: #e2e8f0;
}

.shot-phone-body {
  padding: 10px 14px 14px;
}

.shot-phone-body .ph-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.shot-phone-body .ph-title b {
  font-size: 13px;
  font-weight: 800;
  color: var(--ink);
}

.shot-phone-body .ph-title span {
  font-size: 10px;
  font-weight: 650;
  color: var(--muted);
}

.ph-ring {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  background: var(--paper);
  margin-bottom: 12px;
}

.ph-ring .ring {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  background: conic-gradient(var(--accent) 0 68%, #e2e8f0 68% 100%);
  display: grid;
  place-items: center;
  flex: none;
}

.ph-ring .ring::after {
  content: "68%";
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: #fff;
  display: grid;
  place-items: center;
  font-size: 10px;
  font-weight: 800;
  color: var(--ink);
}

.ph-ring .txt b {
  display: block;
  font-size: 11px;
  font-weight: 750;
  color: var(--ink);
}

.ph-ring .txt span {
  font-size: 9.5px;
  color: var(--muted);
}

.ph-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--line-soft);
  margin-bottom: 7px;
  font-size: 10.5px;
  font-weight: 650;
  color: var(--ink-2);
}

.ph-row i {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: var(--accent-soft);
  flex: none;
}

.ph-row span {
  margin-left: auto;
  color: var(--muted);
  font-size: 9.5px;
}

.ph-tabs {
  display: flex;
  justify-content: space-around;
  padding: 9px 6px 4px;
  border-top: 1px solid var(--line-soft);
  margin-top: 10px;
}

.ph-tabs i {
  width: 16px;
  height: 16px;
  border-radius: 6px;
  background: #e2e8f0;
}

.ph-tabs i:first-child {
  background: var(--accent);
}

.shot-caption {
  margin-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

/* CTA band */
.cta {
  position: relative;
  background: var(--footer);
  border-radius: var(--radius-xl);
  padding: 64px 64px;
  overflow: hidden;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  background: radial-gradient(
    circle,
    rgba(14, 165, 233, 0.35),
    transparent 70%
  );
}

.cta > div,
.cta > a {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta p {
  font-size: 15.5px;
  color: rgba(226, 232, 240, 0.7);
}

.cta a.mail {
  color: #7dd3fc;
  font-weight: 700;
}

.cta a.mail:hover {
  color: #bae6fd;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ------------------------------------------------------------
   Subpage head
   ------------------------------------------------------------ */
.page-head {
  position: relative;
  padding: 140px 0 72px;
  background:
    radial-gradient(
      ellipse 60% 70% at 82% 0%,
      rgba(14, 165, 233, 0.08) 0%,
      transparent 62%
    ),
    #fff;
  overflow: hidden;
}

.page-head h1 {
  font-size: clamp(32px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 780px;
  margin-bottom: 18px;
}

.page-head h1 .hl {
  color: var(--accent-dark);
}

.page-head .lede {
  max-width: 620px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* Prose */
.prose {
  max-width: 720px;
}

.prose section {
  margin-bottom: 56px;
}

.prose h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 16px;
}

.prose p {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-2);
  margin-bottom: 14px;
}

.prose ul {
  list-style: none;
  display: grid;
  gap: 14px;
}

.prose li {
  position: relative;
  padding-left: 26px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
}

.prose strong {
  color: var(--ink);
  font-weight: 750;
}

.facts {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

.facts > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
}

.facts dt {
  color: var(--muted);
  font-weight: 600;
}

.facts dd {
  font-weight: 650;
  color: var(--ink);
}

.facts a {
  color: var(--accent-dark);
}

.facts a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 80px;
  align-items: start;
}

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

.contact-list > div {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15.5px;
}

.contact-list dt {
  color: var(--muted);
  font-weight: 600;
}

.contact-list dd {
  font-weight: 700;
  color: var(--ink);
}

.contact-list a {
  color: var(--accent-dark);
}

.contact-list a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-aside {
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 36px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.contact-aside h2 {
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
}

/* ------------------------------------------------------------
   Footer — dark closing stage
   ------------------------------------------------------------ */
.site-footer {
  position: relative;
  background: var(--footer);
  color: rgba(226, 232, 240, 0.7);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  right: -100px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  background: radial-gradient(
    circle,
    rgba(14, 165, 233, 0.22),
    transparent 70%
  );
}

.footer-main {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 56px;
  padding: 72px 0 56px;
}

.footer-main .brand-name .cn {
  color: #fff;
}

.footer-main .brand-name .en {
  color: rgba(186, 230, 253, 0.4);
}

.footer-main > div > p {
  margin-top: 18px;
  max-width: 400px;
  font-size: 14px;
  line-height: 1.9;
}

.footer-links {
  display: flex;
  gap: 72px;
  justify-content: flex-end;
}

.footer-links h2 {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(186, 230, 253, 0.4);
  margin-bottom: 18px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 14.5px;
  color: rgba(226, 232, 240, 0.78);
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: rgba(226, 232, 240, 0.45);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ------------------------------------------------------------
   Reveal
   ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.64s var(--ease),
    transform 0.64s var(--ease);
}

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

.reveal-delay-1 {
  transition-delay: 0.08s;
}
.reveal-delay-2 {
  transition-delay: 0.16s;
}
.reveal-delay-3 {
  transition-delay: 0.24s;
}
.reveal-delay-4 {
  transition-delay: 0.32s;
}

/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .pillars {
    grid-template-columns: 1fr;
  }

  .pillars > div:not(:last-child) {
    border-right: 0;
    margin-right: 0;
    padding-right: 0;
  }

  .duo {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .steps::before {
    display: none;
  }

  .step {
    text-align: left;
  }

  .step p {
    margin-inline: 0;
  }

  .tracks,
  .trust {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-grid,
  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-links {
    justify-content: flex-start;
    gap: 56px;
  }

  .row {
    grid-template-columns: 56px 1fr;
  }

  .row p {
    grid-column: 2 / -1;
  }

  .shot-phone {
    display: none;
  }
}

@media (max-width: 860px) {
  .shot-app {
    grid-template-columns: 1fr;
  }

  .shot-side {
    flex-direction: row;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
    padding: 12px 14px;
    overflow: auto;
  }

  .shot-side .logo-row {
    padding: 0 8px 0 0;
    white-space: nowrap;
  }

  .shot-side .item {
    padding: 7px 10px;
    white-space: nowrap;
    flex: none;
  }

  .shot-cols {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 40px, 1160px);
  }

  .section {
    padding: 80px 0;
  }

  .hero-cinema {
    min-height: 100svh;
    padding: 110px 0 72px;
  }

  .page-head {
    padding: 120px 0 56px;
  }

  .brand-name .en {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    gap: 2px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line-soft);
    box-shadow: 0 28px 56px -20px rgba(21, 31, 51, 0.25);
  }

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

  .nav-links a,
  .site-header:not(.is-solid):not(.always-solid) .nav-links a,
  .site-header:not(.is-solid):not(.always-solid)
    .nav-links
    a[aria-current="page"] {
    color: var(--ink-2);
    background: transparent;
    padding: 13px 16px;
    border-radius: 10px;
  }

  .site-header:not(.is-solid):not(.always-solid) .nav-links a:hover,
  .nav-links a:hover {
    color: var(--ink);
    background: var(--paper);
  }

  .site-header:not(.is-solid):not(.always-solid)
    .nav-links
    a[aria-current="page"],
  .nav-links a[aria-current="page"] {
    color: var(--accent-dark);
    background: var(--accent-soft);
  }

  .nav-cta {
    margin: 8px 6px 6px;
  }

  .nav-links a.btn-primary,
  .nav-links a.btn-primary[aria-current="page"],
  .site-header:not(.is-solid):not(.always-solid) .nav-cta.btn-primary {
    background: var(--accent);
    color: #fff;
  }

  .nav-links a.btn-primary:hover {
    color: #fff;
    background: var(--accent-dark);
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .cta {
    padding: 44px 28px;
  }

  .shot-stats {
    grid-template-columns: 1fr;
  }

  .shot-main {
    padding: 18px 16px 20px;
  }

  .facts > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

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

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

  .hero-pill::before {
    animation: none;
  }

  .meter .bar i {
    transition: none;
    width: var(--w);
  }
}