:root {
  --ink: #1a1a1a;
  --ink-2: #242424;
  --paper: #ffffff;
  --soft: #f5f2ee;
  --muted: #6f6a63;
  --line: rgba(26, 26, 26, 0.12);
  --line-dark: rgba(255, 255, 255, 0.14);
  --orange: #ff6b35;
  --orange-2: #ff8a57;
  --green: #41d37d;
  --max: 1160px;
  --radius: 18px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.22);
  color-scheme: only light;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 0;
  background: var(--ink);
  color: var(--ink);
  color-scheme: only light;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}

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

button,
input {
  font: inherit;
}

img {
  max-width: 100%;
}

.brand img,
.footer-brand img,
.qr-box,
.qr-box img {
  forced-color-adjust: none;
}

.site-shell {
  min-height: 100dvh;
  background: var(--paper);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(26, 26, 26, 0.9);
  color: var(--paper);
  backdrop-filter: blur(18px);
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand,
.nav-links,
.hero-actions,
.button-row,
.mini-row,
.download-choice,
.code-strip {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0;
  min-width: 0;
}

.brand img {
  width: 34px;
  height: 34px;
}

.brand-tagline {
  border-left: 1px solid rgba(255, 255, 255, 0.22);
  padding-left: 12px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-style: normal;
  font-weight: 700;
  white-space: nowrap;
}

.nav-links {
  gap: 18px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  white-space: nowrap;
}

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

.nav-login {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.32);
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  line-height: 1;
}

.hero {
  min-height: calc(100dvh - 72px);
  color: var(--paper);
  background:
    linear-gradient(90deg, rgba(26, 26, 26, 0.96), rgba(26, 26, 26, 0.82) 45%, rgba(26, 26, 26, 0.48)),
    url("/assets/brand-field-night.png") center / cover no-repeat,
    var(--ink);
}

.hero-grid {
  min-height: calc(100dvh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.78fr);
  gap: clamp(34px, 6vw, 78px);
  align-items: center;
  padding: clamp(34px, 6vw, 72px) 0 clamp(56px, 7vw, 88px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--orange-2);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

.hero h1 {
  max-width: 940px;
  margin-bottom: 24px;
  font-size: clamp(36px, 4vw, 52px);
  line-height: 1.03;
  letter-spacing: 0;
  font-weight: 760;
  text-wrap: balance;
  white-space: nowrap;
}

.hero h1 span {
  display: block;
}

.hero h1 span + span {
  margin-top: 10px;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.58;
  font-weight: 650;
}

.hero-statement {
  display: inline-flex;
  width: fit-content;
  margin: 10px 0 24px;
  border-left: 3px solid rgba(255, 107, 53, 0.82);
  padding-left: 12px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  font-weight: 850;
}

.hero-actions,
.button-row {
  gap: 12px;
  flex-wrap: wrap;
}

.hero-actions {
  margin-bottom: 18px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 13px 19px;
  font-weight: 850;
  line-height: 1.1;
  appearance: none;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
  forced-color-adjust: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.btn-primary {
  color: var(--paper);
  background: #e85f2e;
  border-color: #e85f2e;
  box-shadow: 0 14px 34px rgba(232, 95, 46, 0.24);
}

.hero .btn-primary {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
  box-shadow: 0 18px 42px rgba(255, 255, 255, 0.16);
}

.hero .btn-ghost {
  color: rgba(255, 255, 255, 0.84);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.045);
}

.page-hero .btn-ghost {
  color: var(--paper);
  border-color: rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.1);
}

.btn-dark {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.btn-ghost {
  color: var(--paper);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.btn-light {
  color: var(--ink);
  border-color: var(--line);
  background: var(--paper);
}

.hero-proof {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.45fr;
  gap: 10px;
  max-width: 820px;
  margin-top: 26px;
}

.hero-proof span {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 12px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 720;
  white-space: nowrap;
}

.hero-note {
  max-width: 700px;
  margin: 20px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 12px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  line-height: 1.72;
}

.hero-device {
  justify-self: end;
  width: min(390px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 38px;
  padding: 14px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.06));
  box-shadow: var(--shadow);
}

.phone-screen {
  min-height: 650px;
  border-radius: 30px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 107, 53, 0.22), transparent 32%),
    linear-gradient(180deg, #232323, #0f0f0f);
  color: var(--paper);
  padding: 24px;
  position: relative;
}

.phone-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 750;
}

.online-pill {
  border: 1px solid rgba(129, 230, 170, 0.28);
  border-radius: 999px;
  padding: 6px 10px;
  color: rgba(190, 255, 215, 0.9);
  background: rgba(70, 211, 135, 0.075);
  white-space: nowrap;
}

.channel-card {
  margin-top: 34px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.07);
}

.channel-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 20px;
}

.channel-card span {
  color: rgba(255, 255, 255, 0.64);
}

.phone-screen-app {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.phone-screen-app .channel-card {
  margin-top: 28px;
}

.speaker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 14px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
}

.speaker-row > span:first-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vu-bars {
  display: inline-flex;
  align-items: end;
  gap: 4px;
  height: 22px;
  flex: 0 0 auto;
}

.vu-bars i {
  width: 5px;
  border-radius: 999px;
  background: var(--green);
}

.vu-bars i:nth-child(1) { height: 8px; }
.vu-bars i:nth-child(2) { height: 14px; }
.vu-bars i:nth-child(3) { height: 20px; background: #ffc04d; }
.vu-bars i:nth-child(4) { height: 12px; }

.console-members {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.console-member {
  min-height: 58px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 9px 7px;
  color: rgba(255, 255, 255, 0.74);
  background: rgba(255, 255, 255, 0.055);
  font-size: 12px;
  font-weight: 750;
  text-align: center;
}

.console-member-active {
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.075);
}

.ptt-button {
  width: min(60%, 198px);
  aspect-ratio: 1;
  margin: 8px auto 4px;
  border: 9px solid rgba(255, 107, 53, 0.68);
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--paper);
  background: radial-gradient(circle, rgba(255, 107, 53, 0.14), rgba(255, 255, 255, 0.035) 58%);
  box-shadow:
    0 0 0 8px rgba(255, 107, 53, 0.04),
    0 18px 46px rgba(255, 107, 53, 0.12),
    inset 0 0 30px rgba(255, 107, 53, 0.1);
}

.ptt-button strong {
  display: block;
  font-size: 50px;
  line-height: 1;
  letter-spacing: 0;
}

.ptt-button span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.mode-stack {
  display: grid;
  gap: 9px;
  margin-top: auto;
}

.mode-stack div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 10px;
}

.mode-stack strong {
  color: rgba(255, 255, 255, 0.88);
  font-size: 13px;
}

.mode-stack span {
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
}

.ptt-orbit {
  position: absolute;
  left: 50%;
  top: 52%;
  width: min(238px, 64vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--orange) 0 48%, rgba(255, 107, 53, 0.22) 49% 64%, transparent 65%);
  display: grid;
  place-items: center;
  box-shadow: 0 0 0 18px rgba(255, 107, 53, 0.08), 0 28px 70px rgba(255, 107, 53, 0.24);
}

.ptt-orbit::before,
.ptt-orbit::after {
  content: "";
  position: absolute;
  inset: -18px;
  border: 1px solid rgba(255, 107, 53, 0.34);
  border-radius: 50%;
}

.ptt-orbit::after {
  inset: -38px;
  border-color: rgba(255, 107, 53, 0.16);
}

.ptt-text {
  position: relative;
  text-align: center;
  color: var(--ink);
  font-weight: 950;
}

.ptt-text b {
  display: block;
  font-size: 34px;
  line-height: 1;
}

.ptt-text small {
  display: block;
  margin-top: 7px;
  font-size: 12px;
}

.members {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  display: grid;
  gap: 10px;
}

.member-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 14px;
  padding: 11px 12px;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.06);
}

.member-row em {
  color: var(--green);
  font-style: normal;
}

main {
  background: var(--paper);
}

section {
  scroll-margin-top: 92px;
}

.band {
  padding: clamp(62px, 8vw, 108px) 0;
}

.band-soft {
  background: var(--soft);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 0.56fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 34px;
}

.section-head h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-head p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.grid-3,
.grid-4,
.grid-2,
.grid-1 {
  display: grid;
  gap: 14px;
}

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

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

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

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

.tile,
.scene,
.compare-cell,
.download-card,
.form-panel,
.article-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.tile,
.scene,
.article-card {
  padding: 24px;
}

.tile strong,
.scene strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.25;
}

.tile p,
.scene p,
.article-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.scene {
  min-height: 220px;
  display: grid;
  align-content: space-between;
  gap: 16px;
}

.scene-label {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  color: var(--orange);
  font-size: 13px;
  font-weight: 850;
}

.scene span {
  color: var(--orange);
  font-size: 13px;
  font-weight: 850;
}

.scene-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1.38fr);
  gap: 16px;
  align-items: stretch;
}

.scene-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.scene-feature {
  min-height: 100%;
  align-content: end;
  padding: 0;
}

.scene-feature strong {
  max-width: 520px;
  margin: 0;
  font-size: clamp(30px, 3.7vw, 48px);
  line-height: 1.08;
  text-wrap: balance;
}

.scene-feature p {
  max-width: 520px;
  margin: 0;
  font-size: 17px;
  line-height: 1.72;
}

.scene-feature em {
  width: fit-content;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  color: var(--paper);
  font-size: 14px;
  font-style: normal;
  font-weight: 850;
}

.scene-mini {
  min-height: 268px;
  align-content: end;
  overflow: hidden;
  padding: 0;
  position: relative;
  isolation: isolate;
  border-color: rgba(255, 255, 255, 0.16);
  color: var(--paper);
  background: #171717;
  box-shadow: 0 18px 46px rgba(22, 20, 17, 0.14);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.scene-mini:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 53, 0.38);
  box-shadow: 0 24px 62px rgba(22, 20, 17, 0.2);
}

.scene-content {
  display: grid;
  align-content: end;
  justify-items: start;
  gap: 10px;
  padding: 24px;
}

.scene-mini .scene-content,
.scene-feature .scene-content {
  position: relative;
  z-index: 1;
}

.scene-feature .scene-content {
  align-content: end;
  min-height: 100%;
  gap: 15px;
  padding: clamp(32px, 4.5vw, 48px);
}

.scene-mini strong {
  color: var(--paper);
  max-width: 26ch;
  margin: 0;
  font-size: 20px;
  line-height: 1.26;
  text-wrap: balance;
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.32);
}

.scene-mini p {
  max-width: 32ch;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  line-height: 1.58;
}

.scene-mini .scene-label {
  justify-self: start;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 6px 10px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.11);
  backdrop-filter: blur(12px);
}

.scene q {
  display: block;
  max-width: 34ch;
  border-left: 3px solid var(--orange);
  margin-top: 2px;
  padding: 7px 0 7px 12px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 850;
  line-height: 1.45;
  quotes: none;
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.24);
}

.scene-thumb {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(0.94) brightness(0.9);
  transform: scale(1.015);
  transition: transform 420ms ease, filter 420ms ease;
}

.scene-mini:hover .scene-thumb {
  transform: scale(1.045);
  filter: saturate(0.86) contrast(0.98) brightness(0.96);
}

.scene-feature .scene-cover {
  object-position: 58% 46%;
}

.scene-mini[href="/industry/fleet-dispatch/"] .scene-thumb {
  object-position: center 42%;
}

.scene-mini[href="/industry/logistics/"] .scene-thumb {
  object-position: center 58%;
}

.scene-mini[href="/industry/security-patrol/"] .scene-thumb,
.scene-mini[href="/use-case/team/"] .scene-thumb {
  object-position: center 38%;
}

.scene-cover {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 56% center;
  filter: saturate(0.82) contrast(0.96) brightness(0.98);
  transform: scale(1.015);
}

.scene-mini::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(16, 16, 16, 0.1), rgba(16, 16, 16, 0.38) 42%, rgba(16, 16, 16, 0.9)),
    linear-gradient(90deg, rgba(16, 16, 16, 0.42), rgba(16, 16, 16, 0.16));
}

.scene-photo {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--paper);
  background: #171717;
  box-shadow: 0 18px 44px rgba(21, 24, 29, 0.12);
}

.scene-photo::before,
.scene-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
}

.scene-photo::before {
  display: none;
}

.scene-photo::after {
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(16, 16, 16, 0.1), rgba(16, 16, 16, 0.42) 44%, rgba(16, 16, 16, 0.88)),
    linear-gradient(90deg, rgba(16, 16, 16, 0.66), rgba(16, 16, 16, 0.2));
}

.scene-photo strong {
  color: var(--paper);
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.32);
}

.scene-photo p {
  color: rgba(255, 255, 255, 0.76);
}

.scene-photo .scene-label {
  width: fit-content;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 6px 10px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.scene-road { --scene-focus: 42% 42%; }
.scene-fleet { --scene-focus: 62% 48%; }
.scene-security { --scene-focus: 74% 38%; }
.scene-logistics { --scene-focus: 52% 60%; }
.scene-site { --scene-focus: 36% 64%; }
.scene-event { --scene-focus: 78% 28%; }
.scene-outdoor { --scene-focus: 44% 32%; }
.scene-temp { --scene-focus: 68% 58%; }

.scene-editorial {
  display: grid;
  gap: 18px;
}

.scene-case {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 18px 52px rgba(22, 20, 17, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.scene-case:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 53, 0.32);
  box-shadow: 0 24px 68px rgba(22, 20, 17, 0.13);
}

.scene-case-main {
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  min-height: 500px;
  color: var(--paper);
  background: #151515;
}

.scene-case-main .scene-case-image {
  min-height: 500px;
}

.scene-case-image,
.scene-card-photo {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  background: #181818;
}

.scene-card-photo {
  min-height: 184px;
}

.scene-case-image img,
.scene-card-photo img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  display: block;
  object-fit: cover;
  filter: saturate(0.9) contrast(0.98);
  transition: transform 420ms ease, filter 420ms ease;
}

.scene-case:hover img {
  transform: scale(1.035);
  filter: saturate(0.98) contrast(1);
}

.scene-case-main .scene-case-copy {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: clamp(32px, 4vw, 54px);
  background:
    linear-gradient(135deg, rgba(255, 107, 53, 0.12), transparent 36%),
    #171717;
}

.scene-case-copy {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 24px;
}

.scene-case-copy .scene-label {
  border: 1px solid rgba(255, 107, 53, 0.24);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(255, 107, 53, 0.08);
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
}

.scene-case-copy strong {
  display: block;
  color: inherit;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.16;
  letter-spacing: 0;
}

.scene-case-main .scene-case-copy strong {
  font-size: clamp(34px, 4.1vw, 56px);
  line-height: 1.04;
}

.scene-case-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.82;
  text-align: justify;
}

.scene-case-main .scene-case-copy p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.scene-case-copy em {
  width: fit-content;
  margin-top: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.56);
  color: var(--paper);
  font-size: 14px;
  font-style: normal;
  font-weight: 850;
}

.scene-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.scene-card-grid .scene-case {
  grid-template-columns: minmax(150px, 0.42fr) minmax(0, 1fr);
  min-height: 238px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.solution-card {
  display: grid;
  align-content: start;
  gap: 12px;
  min-height: 230px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background:
    linear-gradient(150deg, rgba(255, 107, 53, 0.08), transparent 44%),
    var(--paper);
}

.solution-card span {
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
}

.solution-card strong {
  color: var(--ink);
  font-size: 24px;
  line-height: 1.18;
}

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

.fine-print {
  margin: 18px 0 0;
  color: rgba(111, 106, 99, 0.9);
  font-size: 13px;
  line-height: 1.75;
}

.compare-table {
  display: grid;
  grid-template-columns: 1.1fr repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.compare-cell {
  border-width: 0 1px 1px 0;
  border-radius: 0;
  padding: 17px;
  color: var(--muted);
  min-height: 76px;
}

.compare-cell:nth-child(4n) {
  border-right: 0;
}

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

.compare-head {
  background: var(--ink);
  color: var(--paper);
  font-weight: 850;
}

.compare-good {
  color: #16784c;
}

.cta-band {
  color: var(--paper);
  background: var(--ink);
}

.cta-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.cta-panel h2 {
  margin-bottom: 10px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.02;
}

.cta-panel p {
  max-width: 690px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer {
  color: rgba(255, 255, 255, 0.66);
  background: #101010;
  padding: 36px 0;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex-wrap: wrap;
}

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

.footer-brand strong {
  color: var(--paper);
  line-height: 1.2;
}

.footer-brand span {
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  padding-left: 10px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  white-space: nowrap;
}

.footer a {
  color: var(--paper);
  margin-right: 16px;
}

.page-hero {
  color: var(--paper);
  background:
    linear-gradient(110deg, rgba(26, 26, 26, 0.98), rgba(26, 26, 26, 0.84)),
    var(--ink);
  padding: clamp(58px, 9vw, 104px) 0;
}

.page-hero h1 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.06;
  overflow-wrap: anywhere;
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 20px;
  overflow-wrap: anywhere;
}

.case-page-hero {
  background:
    linear-gradient(100deg, rgba(18, 18, 18, 0.96), rgba(18, 18, 18, 0.78) 48%, rgba(18, 18, 18, 0.55)),
    var(--case-bg) center / cover no-repeat,
    var(--ink);
}

.download-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.58fr);
  gap: 18px;
  align-items: start;
}

.download-card,
.form-panel {
  padding: 24px;
  min-width: 0;
}

.download-choice {
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding: 18px 0;
  min-width: 0;
}

.download-choice > div {
  min-width: 0;
}

.download-choice:first-child {
  border-top: 0;
  padding-top: 0;
}

.download-choice:last-child {
  padding-bottom: 0;
}

.download-choice p {
  margin-bottom: 0;
  color: var(--muted);
}

.download-join {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

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

.download-join a {
  color: var(--orange);
  font-weight: 900;
  white-space: nowrap;
}

.recommend {
  display: inline-block;
  margin-top: 6px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 850;
}

.qr-box {
  display: grid;
  place-items: center;
  width: 168px;
  height: 168px;
  border-radius: 18px;
  background:
    linear-gradient(90deg, var(--ink) 10px, transparent 1%) center / 22px 22px,
    linear-gradient(var(--ink) 10px, transparent 1%) center / 22px 22px,
    var(--paper);
  border: 10px solid var(--paper);
  box-shadow: inset 0 0 0 1px var(--line);
}

.qr-box img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 10px;
  background: var(--paper);
}

.qr-box span {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border-radius: 15px;
  color: var(--paper);
  background: var(--orange);
  font-weight: 950;
}

.download-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.download-flow article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--paper);
}

.download-flow span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 999px;
  color: var(--paper);
  background: var(--orange);
  font-size: 13px;
  font-weight: 950;
}

.download-flow strong {
  display: block;
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.18;
}

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

.install-guide {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.install-brand {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  grid-template-areas:
    "icon title"
    "icon copy";
  column-gap: 14px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--paper);
}

.install-brand span {
  grid-area: icon;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--paper);
  font-size: 15px;
  font-weight: 950;
  line-height: 1;
}

.install-brand strong {
  grid-area: title;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.22;
}

.install-brand p {
  grid-area: copy;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.install-huawei span {
  background: #2377d7;
}

.install-xiaomi span {
  background: #f06a00;
}

.install-oppo span {
  background: #19a56b;
}

.install-vivo span {
  background: #d73b45;
}

.install-apple span {
  background: #1a1a1a;
}

.install-safe span {
  color: var(--ink);
  background: #f2d46b;
}

.download-compat {
  margin-top: 18px;
  border: 1px solid rgba(255, 107, 53, 0.22);
  border-radius: var(--radius);
  padding: 22px 24px;
  background:
    linear-gradient(150deg, rgba(255, 107, 53, 0.1), transparent 46%),
    var(--paper);
}

.download-compat strong {
  display: block;
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.25;
}

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

.download-faq {
  display: grid;
  gap: 12px;
}

.download-faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 20px;
  background: var(--paper);
}

.download-faq summary {
  cursor: pointer;
  padding: 20px 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 850;
}

.download-faq details[open] summary {
  border-bottom: 1px solid var(--line);
}

.download-faq p {
  margin: 16px 0 20px;
  color: var(--muted);
}

.code-strip {
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--soft);
  word-break: break-all;
}

.code-strip code {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.input-group {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.input-group input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
}

.input-group input:focus {
  outline: 3px solid rgba(255, 107, 53, 0.22);
  border-color: var(--orange);
}

.note {
  color: var(--muted);
  font-size: 14px;
}

.article-body {
  max-width: 820px;
  padding: 64px 0;
}

.article-wide {
  max-width: var(--max);
}

.article-lead {
  border: 1px solid rgba(255, 107, 53, 0.22);
  border-radius: var(--radius);
  padding: 22px 24px;
  background:
    linear-gradient(145deg, rgba(255, 107, 53, 0.09), transparent 52%),
    var(--paper);
}

.article-lead strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.25;
}

.article-lead p {
  margin: 0;
}

.article-body h2 {
  margin-top: 42px;
  font-size: 32px;
}

.article-body p,
.article-body li {
  color: var(--muted);
  font-size: 17px;
}

.article-body a {
  color: var(--orange);
  font-weight: 850;
}

.seo-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0 10px;
}

.seo-card-grid section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--paper);
}

.seo-card-grid span {
  display: block;
  margin-bottom: 12px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
}

.seo-card-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.25;
}

.seo-card-grid p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
}

.compact-table {
  grid-template-columns: 0.8fr repeat(2, minmax(0, 1fr));
  margin: 24px 0 10px;
}

.compact-table .compare-cell:nth-child(4n) {
  border-right: 1px solid var(--line);
}

.compact-table .compare-cell:nth-child(3n) {
  border-right: 0;
}

.article-faq {
  display: grid;
  gap: 12px;
  margin: 20px 0 8px;
}

.article-faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 20px;
  background: var(--paper);
}

.article-faq summary {
  cursor: pointer;
  padding: 18px 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 850;
}

.article-faq details[open] summary {
  border-bottom: 1px solid var(--line);
}

.article-faq p {
  margin: 15px 0 18px;
}

.article-cta {
  display: grid;
  justify-items: start;
  gap: 12px;
  margin-top: 40px;
  border-radius: var(--radius);
  padding: 26px;
  color: var(--paper);
  background:
    linear-gradient(135deg, rgba(255, 107, 53, 0.18), transparent 46%),
    var(--ink);
}

.article-cta strong {
  font-size: 26px;
  line-height: 1.16;
}

.article-cta p {
  max-width: 620px;
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.directory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.directory-card {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 228px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  background: var(--paper);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

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

.scenario-directory .directory-card,
.solution-directory .directory-card {
  min-height: 0;
  overflow: hidden;
  padding: 0 0 22px;
}

.directory-photo {
  position: relative;
  height: 154px;
  margin: 0 0 8px;
  overflow: hidden;
  background: var(--soft);
}

.directory-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 46%, rgba(26, 26, 26, 0.34));
  pointer-events: none;
}

.directory-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 220ms ease;
}

.directory-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 53, 0.32);
  box-shadow: 0 18px 42px rgba(22, 20, 17, 0.1);
}

.scenario-directory .directory-card:hover .directory-photo img,
.solution-directory .directory-card:hover .directory-photo img {
  transform: scale(1.035);
}

.directory-card span {
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
}

.directory-card strong {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.18;
}

.directory-card p {
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.scenario-directory .directory-card span,
.scenario-directory .directory-card strong,
.scenario-directory .directory-card p,
.solution-directory .directory-card span,
.solution-directory .directory-card strong,
.solution-directory .directory-card p {
  padding: 0 22px;
}

.case-hero-photo,
.solution-hero-photo {
  overflow: hidden;
  margin: 0 0 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.case-hero-photo img,
.solution-hero-photo img {
  width: 100%;
  height: 340px;
  display: block;
  object-fit: cover;
}

.case-hero-photo figcaption,
.solution-hero-photo figcaption {
  margin: 18px 22px 20px;
  border-left: 3px solid var(--orange);
  padding-left: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 850;
}

.solution-article h2 {
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.qr-download {
  margin: 18px 0;
}

.version-table {
  grid-template-columns: 0.8fr 0.82fr 1.6fr;
}

.version-table .compare-cell {
  border-right: 1px solid var(--line);
}

.version-table .compare-cell:nth-child(3n) {
  border-right: 0;
}

@media (max-width: 900px) {
  .nav {
    height: auto;
    padding: 15px 0;
    align-items: flex-start;
  }

  .nav-links {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero-grid,
  .section-head,
  .download-grid,
  .cta-panel {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
  }

  .hero-copy {
    max-width: 34em;
    overflow-wrap: anywhere;
  }

  .hero-device {
    justify-self: start;
  }

  .phone-screen {
    min-height: 560px;
  }

  .ptt-button {
    width: min(70%, 204px);
    border-width: 10px;
  }

  .ptt-button strong {
    font-size: 44px;
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .directory-grid,
  .download-flow,
  .install-guide,
  .seo-card-grid,
  .compact-table {
    grid-template-columns: 1fr;
  }

  .scene-layout,
  .scene-mini-grid,
  .scene-case-main,
  .scene-card-grid,
  .scene-card-grid .scene-case,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .scene-case-main,
  .scene-case-main .scene-case-image {
    min-height: 0;
  }

  .scene-case-image,
  .scene-card-photo {
    min-height: 260px;
  }

  .scene-case-main .scene-case-copy {
    padding: 30px;
  }

  .scene-mini {
    min-height: 260px;
  }

  .scene {
    min-height: 190px;
  }

  .scene-feature {
    min-height: 430px;
  }

  .compare-table {
    grid-template-columns: 1fr;
  }

  .version-table {
    grid-template-columns: 1fr;
  }

  .compare-cell,
  .compare-cell:nth-child(4n),
  .compact-table .compare-cell:nth-child(3n),
  .compact-table .compare-cell:nth-child(4n),
  .version-table .compare-cell:nth-child(3n),
  .version-table .compare-cell:nth-child(4n) {
    border-right: 0;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 36px, var(--max));
  }

  .nav {
    gap: 12px;
  }

  .nav-links a:not(.nav-login) {
    display: none;
  }

  .mobile-line-break {
    display: block;
  }

  .brand-tagline {
    display: none;
  }

  .page-hero {
    padding: 46px 0 50px;
  }

  .hero {
    background:
      radial-gradient(circle at 100% 38%, rgba(255, 107, 53, 0.07), transparent 34%),
      linear-gradient(180deg, #171717 0%, #1a1a1a 58%, #151515 100%),
      var(--ink);
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(29px, 7.6vw, 32px);
    line-height: 1.16;
    white-space: nowrap;
    overflow-wrap: normal;
  }

  .hero-copy {
    margin-bottom: 38px;
    font-size: 17px;
    line-height: 1.7;
  }

  .hero-actions {
    gap: 14px;
    margin-bottom: 26px;
  }

  .hero-proof {
    grid-template-columns: 1fr 1fr;
    margin-top: 30px;
  }

  .hero-proof span {
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    padding: 10px 12px;
    white-space: normal;
  }

  .scene-mini {
    min-height: 290px;
  }

  .scene-case-image,
  .scene-card-photo {
    min-height: 220px;
  }

  .directory-photo {
    height: 176px;
  }

  .solution-hero-photo,
  .solution-hero-photo img {
    min-height: 0;
  }

  .solution-hero-photo img {
    height: 230px;
  }

  .solution-hero-photo figcaption {
    margin: 15px 16px 17px;
  }

  .scene-case-copy,
  .scene-case-main .scene-case-copy,
  .solution-card {
    padding: 20px;
  }

  .scene-case-copy p {
    font-size: 14px;
    line-height: 1.72;
    text-align: left;
  }

  .scene-case-main .scene-case-copy p {
    font-size: 15px;
  }

  .hero-actions .btn,
  .button-row .btn,
  .download-choice .btn {
    width: 100%;
  }

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

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

  .download-choice p,
  .directory-card p,
  .solution-card p,
  .page-hero p {
    overflow-wrap: anywhere;
  }

  .page-hero h1 {
    max-width: 9.8em;
    font-size: clamp(32px, 8.4vw, 36px);
    line-height: 1.18;
    word-break: normal;
    overflow-wrap: break-word;
  }

  .download-choice .btn {
    margin-top: 4px;
    white-space: normal;
  }

  .download-flow article,
  .install-brand,
  .download-compat,
  .download-faq details,
  .article-lead,
  .article-faq details,
  .article-cta {
    padding-left: 18px;
    padding-right: 18px;
  }

  .form-panel {
    padding: 20px;
  }

  .qr-box {
    width: 146px;
    height: 146px;
    border-width: 8px;
  }

  .footer-brand span {
    width: 100%;
    border-left: 0;
    padding-left: 48px;
    white-space: normal;
  }
}

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