:root {
  --bg: #f6faf8;
  --paper: #ffffff;
  --ink: #13201d;
  --muted: #63736e;
  --soft: #e4eeeb;
  --line: #d6e3df;
  --mint: #35c4a0;
  --mint-dark: #0f7d69;
  --blue: #246fd6;
  --amber: #d99a25;
  --rose: #d95662;
  --night: #10223a;
  --shadow: 0 28px 70px rgba(16, 34, 58, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(246, 250, 248, 0.2), var(--bg) 32rem),
    #f6faf8;
  font-family:
    "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

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

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(214, 227, 223, 0.76);
  background: rgba(246, 250, 248, 0.86);
  backdrop-filter: blur(18px);
}

.brand,
.header-actions,
.main-nav,
.download-actions,
.trust-row,
.footer-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 850;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 26px rgba(34, 214, 197, 0.22);
}

.brand-mark img {
  display: block;
  width: 25px;
  height: 31px;
  object-fit: contain;
}

.main-nav {
  gap: clamp(14px, 2.8vw, 32px);
  color: #40534e;
  font-size: 14px;
  font-weight: 700;
}

.main-nav a:hover,
.footer-links a:hover {
  color: var(--mint-dark);
}

.header-actions {
  gap: 10px;
}

.language-button,
.small-cta {
  min-height: 38px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

.language-button {
  width: auto;
  min-width: 92px;
  padding: 0 28px 0 12px;
  border: 1px solid var(--line);
  color: #40534e;
  background: rgba(255, 255, 255, 0.72);
  cursor: pointer;
}

.small-cta {
  display: inline-flex;
  align-items: center;
  padding: 0 15px;
  color: #fff;
  background: var(--night);
}

.hero,
.feature-band,
.setup-section,
.support-section,
.privacy-section,
.share-section,
.site-footer {
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(380px, 1.08fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  min-height: min(860px, calc(100vh - 72px));
  padding: clamp(44px, 6vw, 84px) 0 clamp(30px, 5vw, 56px);
}

.hero-copy,
.hero-visual,
.support-section > *,
.privacy-section > * {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mint-dark);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
  line-height: 1.35;
}

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

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.04;
}

h1 {
  max-width: 670px;
  margin-bottom: 20px;
  font-size: clamp(48px, 7.2vw, 88px);
  font-weight: 900;
  text-wrap: balance;
  overflow-wrap: break-word;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 880;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
}

.hero-text {
  max-width: 610px;
  margin-bottom: 28px;
  color: #415550;
  font-size: clamp(17px, 2vw, 21px);
  overflow-wrap: break-word;
}

.download-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.store-button {
  min-width: 178px;
  min-height: 60px;
  padding: 10px 18px 11px;
  border-radius: 8px;
  color: #fff;
  background: #121917;
  box-shadow: 0 16px 34px rgba(19, 32, 29, 0.18);
}

.store-button span,
.store-button strong {
  display: block;
}

.store-button span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.76);
}

.store-button strong {
  font-size: 20px;
  line-height: 1.1;
}

.store-button.play {
  background: linear-gradient(140deg, #173a2c, #126c67);
}

.guide-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--night);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 34px rgba(19, 32, 29, 0.08);
  font-size: 15px;
  font-weight: 850;
}

.trust-row {
  flex-wrap: wrap;
  gap: 8px;
}

.trust-row span {
  min-height: 32px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #4a5e59;
  background: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 760;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(53, 196, 160, 0.16), transparent 44%),
    linear-gradient(315deg, rgba(36, 111, 214, 0.13), transparent 44%),
    linear-gradient(180deg, #ffffff, #edf6f3);
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 58px 44px auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16, 34, 58, 0.18), transparent);
}

.phone {
  position: absolute;
  width: 218px;
  min-height: 430px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 34px;
  background: #18222d;
  box-shadow: 0 26px 54px rgba(16, 34, 58, 0.24);
}

.phone-left {
  left: 68px;
  top: 72px;
  transform: rotate(-7deg);
}

.phone-right {
  right: 54px;
  bottom: 52px;
  transform: rotate(6deg);
}

.phone-top {
  width: 68px;
  height: 8px;
  margin: 2px auto 10px;
  border-radius: 99px;
  background: #303b47;
}

.screen {
  min-height: 376px;
  border-radius: 24px;
  padding: 18px;
  color: #10201d;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(240, 248, 245, 0.95)),
    #fff;
}

.screen-title {
  margin-bottom: 16px;
  font-weight: 860;
}

.rings {
  display: grid;
  place-items: center;
  height: 156px;
  margin-bottom: 16px;
  border-radius: 24px;
  background:
    conic-gradient(from -45deg, var(--mint) 0 74%, #dce9e7 74% 100%);
  color: #fff;
  position: relative;
}

.rings::after {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 20px;
  background: #fff;
}

.rings strong,
.rings small {
  position: relative;
  z-index: 1;
  color: var(--ink);
}

.rings strong {
  font-size: 30px;
}

.rings small {
  margin-top: -48px;
  color: var(--muted);
  font-size: 12px;
}

.metric-line {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--soft);
  color: var(--muted);
  font-size: 13px;
}

.metric-line b {
  color: var(--ink);
}

.watch {
  position: absolute;
  left: calc(50% - 76px);
  top: 188px;
  width: 152px;
  height: 210px;
  z-index: 4;
}

.strap {
  position: absolute;
  left: 46px;
  width: 60px;
  height: 78px;
  border-radius: 24px;
  background: linear-gradient(180deg, #273241, #101722);
}

.strap-top {
  top: -58px;
}

.strap-bottom {
  bottom: -58px;
}

.watch-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  border: 8px solid #121924;
  border-radius: 40px;
  color: #fff;
  background:
    linear-gradient(140deg, rgba(53, 196, 160, 0.28), transparent 56%),
    #172130;
  box-shadow: 0 20px 44px rgba(16, 34, 58, 0.28);
}

.watch-face span {
  font-size: 20px;
  font-weight: 850;
}

.watch-face strong {
  margin-top: 18px;
  color: #63e2be;
  font-size: 44px;
  line-height: 1;
}

.watch-face small {
  color: rgba(255, 255, 255, 0.74);
}

.device-card {
  display: grid;
  place-items: center;
  min-height: 138px;
  margin-bottom: 16px;
  border-radius: 22px;
  color: #fff;
  font-weight: 850;
  background:
    linear-gradient(140deg, rgba(53, 196, 160, 0.36), transparent 55%),
    #10223a;
}

.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mini-grid span {
  min-height: 56px;
  padding: 10px;
  border-radius: 16px;
  background: #edf5f2;
  color: #4b625c;
  font-size: 13px;
  font-weight: 780;
}

.app-shot {
  position: absolute;
  z-index: 4;
  margin: 0;
  border: 10px solid #16212d;
  border-radius: 36px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 28px 60px rgba(16, 34, 58, 0.24);
}

.app-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.shot-primary {
  left: 72px;
  top: 48px;
  width: 230px;
  height: 468px;
  transform: rotate(-5deg);
}

.shot-secondary {
  right: 70px;
  bottom: 44px;
  width: 230px;
  height: 468px;
  transform: rotate(5deg);
}

.watch-badge {
  position: absolute;
  left: calc(50% - 78px);
  top: 230px;
  z-index: 8;
  display: grid;
  place-items: center;
  align-content: center;
  width: 156px;
  height: 156px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 34px;
  color: #fff;
  background:
    linear-gradient(140deg, rgba(53, 196, 160, 0.32), transparent 56%),
    #172130;
  box-shadow: 0 20px 44px rgba(16, 34, 58, 0.28);
}

.watch-badge span {
  font-size: 13px;
  font-weight: 800;
}

.watch-badge strong {
  margin-top: 10px;
  color: #63e2be;
  font-size: 38px;
  line-height: 1;
}

.feature-band,
.setup-section,
.answer-section,
.support-section,
.privacy-section {
  padding: clamp(58px, 8vw, 96px) 0;
}

.share-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  gap: 22px;
  align-items: center;
  padding: clamp(34px, 5vw, 56px);
  margin-top: clamp(18px, 4vw, 38px);
  margin-bottom: clamp(24px, 5vw, 52px);
  border: 1px solid rgba(214, 227, 223, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(53, 196, 160, 0.1), transparent 52%),
    #fff;
  box-shadow: 0 18px 44px rgba(16, 34, 58, 0.08);
}

.share-section h2 {
  max-width: 680px;
  margin-bottom: 10px;
  font-size: clamp(28px, 3.8vw, 44px);
}

.share-section p:not(.eyebrow) {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
}

.share-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.share-actions button {
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--night);
  background: #fff;
  font-weight: 850;
  text-align: left;
  cursor: pointer;
}

.share-actions button:hover {
  border-color: rgba(15, 125, 105, 0.34);
  background: rgba(53, 196, 160, 0.09);
}

.answer-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.answer-card {
  min-height: 220px;
  padding: clamp(22px, 4vw, 32px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(53, 196, 160, 0.08), transparent 42%),
    #fff;
}

.answer-card p {
  color: var(--muted);
  font-size: 17px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(260px, 0.78fr);
  gap: 32px;
  align-items: end;
  margin-bottom: 28px;
}

.section-heading.compact {
  display: block;
  max-width: 760px;
}

.support-section,
.privacy-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 1fr);
  gap: 28px;
  align-items: start;
}

.support-copy p,
.privacy-grid p,
.feature-grid p,
.steps p,
.site-footer p {
  color: var(--muted);
}

.feature-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.feature-grid article,
.steps article,
.privacy-grid article {
  min-height: 240px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.feature-grid article {
  overflow: hidden;
  padding: 0;
}

.feature-grid article h3,
.feature-grid article p {
  margin-left: 22px;
  margin-right: 22px;
}

.feature-grid article p {
  margin-bottom: 22px;
}

.feature-shot {
  height: 180px;
  margin: 0 0 20px;
  border-bottom: 1px solid var(--line);
  background: #f7fbfa;
  overflow: hidden;
}

.feature-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.steps article b {
  display: block;
  margin-bottom: 46px;
  color: var(--mint-dark);
  font-size: 13px;
}

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

.steps-three article {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 251, 249, 0.82)),
    #fff;
}

.download-hero,
.download-steps,
.download-help {
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
}

.download-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  min-height: min(760px, calc(100vh - 72px));
  padding: clamp(44px, 7vw, 92px) 0 clamp(32px, 5vw, 64px);
}

.download-copy {
  min-width: 0;
}

.download-note {
  max-width: 560px;
  color: var(--muted);
  font-size: 14px;
}

.qr-panel {
  margin: 0;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.qr-panel img {
  display: block;
  width: min(220px, 100%);
  height: auto;
  margin: 0 auto 24px;
  border: 10px solid #f4fbf9;
  border-radius: 8px;
}

.qr-panel h2 {
  font-size: clamp(24px, 3vw, 34px);
}

.qr-panel p {
  color: var(--muted);
}

.download-steps,
.download-help {
  padding: clamp(52px, 7vw, 84px) 0;
}

.download-help {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(340px, 1fr);
  gap: 28px;
  border-top: 1px solid var(--line);
}

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

.help-card-grid a {
  min-height: 88px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--night);
  font-weight: 850;
}

.help-card-grid article {
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.help-card-grid article p {
  color: var(--muted);
}

.support-hero,
.support-console,
.support-overview,
.usage-guides,
.phone-guides,
.devices-hero,
.device-disclaimer,
.device-list-section,
.custom-hero,
.custom-proof,
.custom-scope,
.custom-process,
.custom-contact {
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
}

.support-hero,
.devices-hero,
.custom-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  min-height: min(720px, calc(100vh - 72px));
  padding: clamp(44px, 7vw, 92px) 0 clamp(32px, 5vw, 64px);
}

.support-note {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(53, 196, 160, 0.12), transparent 48%),
    #fff;
  box-shadow: var(--shadow);
}

.support-note h2 {
  font-size: clamp(26px, 3vw, 38px);
}

.support-note p,
.guide-content li {
  color: var(--muted);
}

.support-overview,
.support-console,
.usage-guides,
.phone-guides,
.device-disclaimer,
.device-list-section,
.custom-proof,
.custom-scope,
.custom-process,
.custom-contact {
  padding: clamp(52px, 7vw, 84px) 0;
}

.custom-brief-card {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(36, 111, 214, 0.1), transparent 52%),
    #fff;
  box-shadow: var(--shadow);
}

.custom-brief-card h2 {
  font-size: clamp(26px, 3vw, 38px);
}

.custom-brief-card ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.custom-brief-card li + li {
  margin-top: 8px;
}

.custom-proof,
.custom-scope,
.custom-process,
.custom-contact {
  border-top: 1px solid var(--line);
}

.custom-metric-grid,
.scope-list {
  display: grid;
  gap: 14px;
}

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

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

.custom-metric-grid article,
.scope-list article {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(16, 34, 58, 0.06);
}

.custom-metric-grid b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 8px;
  color: #fff;
  background: var(--night);
}

.custom-metric-grid p,
.scope-list p,
.custom-contact p {
  color: var(--muted);
}

.custom-contact {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1fr);
  gap: 28px;
  align-items: start;
}

.custom-lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(16, 34, 58, 0.08);
}

.custom-lead-form label {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.custom-lead-form span {
  color: #40534e;
  font-size: 13px;
  font-weight: 850;
}

.custom-lead-form input,
.custom-lead-form textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font: inherit;
  outline: none;
}

.custom-lead-form input:focus,
.custom-lead-form textarea:focus {
  border-color: rgba(15, 125, 105, 0.54);
  box-shadow: 0 0 0 4px rgba(53, 196, 160, 0.14);
}

.wide-field,
.form-actions,
.custom-lead-form .search-status {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.form-actions button,
.form-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 850;
  cursor: pointer;
}

.form-actions button {
  color: #fff;
  background: var(--night);
}

.form-actions .secondary-action {
  color: var(--night);
  background: #fff;
}

.form-actions a {
  color: var(--night);
  background: #fff;
}

.device-disclaimer {
  border-top: 1px solid var(--line);
}

.device-search {
  display: grid;
  gap: 8px;
  max-width: 720px;
  margin-bottom: 12px;
}

.device-search span {
  color: #40534e;
  font-size: 13px;
  font-weight: 850;
}

.device-search input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  outline: none;
}

.device-search input:focus {
  border-color: rgba(15, 125, 105, 0.54);
  box-shadow: 0 0 0 4px rgba(53, 196, 160, 0.14);
}

.device-table-wrap {
  overflow-x: auto;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(16, 34, 58, 0.07);
}

.device-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
}

.device-table th,
.device-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.device-table th {
  color: #40534e;
  font-size: 13px;
  font-weight: 850;
  background: #f7fbfa;
}

.device-table td {
  color: var(--muted);
  font-size: 14px;
}

.device-table td:first-child,
.device-table td:nth-child(2) {
  color: var(--ink);
  font-weight: 850;
}

.device-table a {
  color: var(--mint-dark);
  font-weight: 850;
}

.device-table tr[hidden] {
  display: none;
}

.support-console {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.86fr) minmax(260px, 0.7fr);
  gap: 14px;
  border-top: 1px solid var(--line);
}

.support-tool {
  min-width: 0;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid rgba(214, 227, 223, 0.92);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 44px rgba(16, 34, 58, 0.08);
}

.support-tool h2 {
  max-width: 520px;
  margin-bottom: 18px;
  font-size: clamp(24px, 2.7vw, 34px);
}

.support-search {
  display: grid;
  gap: 8px;
}

.support-search span,
.issue-result strong {
  color: #40534e;
  font-size: 13px;
  font-weight: 850;
}

.support-search input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  outline: none;
}

.support-search input:focus {
  border-color: rgba(15, 125, 105, 0.54);
  box-shadow: 0 0 0 4px rgba(53, 196, 160, 0.14);
}

.search-status,
.issue-result p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.issue-options,
.phone-brand-grid {
  display: grid;
  gap: 10px;
}

.issue-options button,
.phone-brand-grid button {
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--night);
  background: #fff;
  font-weight: 850;
  text-align: left;
  cursor: pointer;
}

.issue-options button:hover,
.issue-options button.is-active,
.phone-brand-grid button:hover {
  border-color: rgba(15, 125, 105, 0.34);
  background: rgba(53, 196, 160, 0.09);
}

.issue-result {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid rgba(15, 125, 105, 0.16);
  border-radius: 8px;
  background: rgba(53, 196, 160, 0.08);
}

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

.guide-list details[hidden],
.guide-category[hidden] {
  display: none;
}

.guide-list details.is-highlighted {
  border-color: rgba(15, 125, 105, 0.42);
  box-shadow: 0 18px 38px rgba(15, 125, 105, 0.12);
}

.support-overview {
  border-top: 1px solid var(--line);
}

.guide-list {
  display: grid;
  gap: 12px;
}

.guide-category {
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.guide-category-copy {
  position: sticky;
  top: 96px;
}

.guide-category-copy h2 {
  font-size: clamp(28px, 3.4vw, 42px);
}

.guide-list details {
  overflow: hidden;
}

.guide-content {
  padding: 0 18px 18px;
}

.guide-content h3 {
  margin: 12px 0 8px;
  font-size: 17px;
}

.guide-content ol {
  margin: 0 0 16px;
  padding-left: 22px;
}

.guide-content li + li {
  margin-top: 6px;
}

.guide-content p {
  color: var(--muted);
}

.medical-note {
  padding: 12px 14px;
  border: 1px solid rgba(217, 86, 98, 0.28);
  border-radius: 8px;
  background: rgba(217, 86, 98, 0.06);
}

.inline-guide {
  width: fit-content;
  margin-top: 18px;
}

.support-section {
  align-items: center;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

summary {
  cursor: pointer;
  padding: 18px 18px;
  color: var(--ink);
  font-weight: 850;
}

details p {
  margin: -4px 18px 18px;
  color: var(--muted);
}

.privacy-section {
  border-top: 1px solid var(--line);
}

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

.privacy-grid article {
  min-height: 178px;
  background: #fff;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  width: fit-content;
  margin-bottom: 10px;
}

.footer-links {
  flex-wrap: wrap;
  gap: 16px;
  color: #52645f;
  font-size: 14px;
  font-weight: 760;
}

/* Visual refresh: refined product-site direction */
:root {
  --bg: #f7faf6;
  --paper: #ffffff;
  --ink: #111c19;
  --muted: #667671;
  --soft: #eef5f2;
  --line: #dce8e4;
  --mint: #1fd4bd;
  --mint-dark: #087d70;
  --blue: #2e6fe8;
  --amber: #f2a328;
  --rose: #e65f6d;
  --night: #101a28;
  --shadow: 0 28px 80px rgba(17, 28, 25, 0.11);
  --shadow-soft: 0 18px 48px rgba(17, 28, 25, 0.08);
}

body {
  background:
    linear-gradient(rgba(13, 128, 111, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 128, 111, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, #fbfdfb 0%, #f5faf7 58%, #ffffff 100%);
  background-size: 32px 32px, 32px 32px, auto;
  font-family: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 500;
}

.site-header {
  inset-inline: 0;
  width: min(1280px, calc(100vw - 32px));
  min-height: 70px;
  margin: 12px auto 0;
  padding: 10px 12px 10px 16px;
  border: 1px solid rgba(220, 232, 228, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 54px rgba(17, 28, 25, 0.07);
}

.brand {
  color: #0c1714;
  font-family: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 255, 253, 0.94));
  box-shadow:
    0 16px 36px rgba(31, 212, 189, 0.24),
    inset 0 0 0 1px rgba(31, 212, 189, 0.12);
}

.main-nav {
  gap: 6px;
  padding: 5px;
  border: 1px solid rgba(220, 232, 228, 0.76);
  border-radius: 8px;
  background: rgba(247, 250, 246, 0.72);
}

.main-nav a {
  padding: 9px 15px;
  border-radius: 7px;
  color: #40534e;
  transition: color 160ms ease, background 160ms ease;
}

.main-nav a:hover {
  color: #10211d;
  background: #ffffff;
}

.language-button {
  background: #ffffff;
}

.small-cta {
  background: #101a28;
  box-shadow: 0 14px 30px rgba(16, 26, 40, 0.16);
}

.hero,
.feature-band,
.setup-section,
.support-section,
.privacy-section,
.share-section,
.site-footer,
.answer-section {
  width: min(1240px, calc(100vw - 40px));
}

.hero {
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.04fr);
  gap: clamp(34px, 6vw, 88px);
  min-height: min(820px, calc(100vh - 84px));
  padding: clamp(62px, 7vw, 104px) 0 clamp(34px, 5vw, 64px);
}

.eyebrow {
  color: var(--mint-dark);
  font-family: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

h1,
h2,
h3 {
  font-family: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
}

h1 {
  max-width: 720px;
  font-size: clamp(48px, 6.3vw, 76px);
  line-height: 1.02;
  overflow-wrap: normal;
  word-break: normal;
}

h2 {
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.08;
}

h3 {
  font-size: 21px;
  line-height: 1.16;
}

.hero-text {
  max-width: 590px;
  color: #374d48;
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.7;
}

.download-actions {
  gap: 10px;
  margin-bottom: 24px;
}

.store-button,
.guide-button {
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.store-button {
  min-width: 190px;
  min-height: 64px;
  padding: 11px 18px;
  box-shadow: 0 20px 46px rgba(16, 26, 40, 0.15);
}

.store-button:hover,
.guide-button:hover {
  transform: translateY(-2px);
}

.store-button.apple {
  background: linear-gradient(145deg, #07110f, #16241f);
}

.store-button.play {
  background: linear-gradient(145deg, #0b7569, #0b5e55);
}

.guide-button {
  border-color: rgba(15, 125, 105, 0.18);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.trust-row {
  gap: 10px;
}

.trust-row span {
  min-height: 34px;
  border-color: rgba(13, 128, 111, 0.16);
  color: #3d514c;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 24px rgba(17, 28, 25, 0.04);
}

.hero-visual {
  min-height: 600px;
  border-color: rgba(220, 232, 228, 0.92);
  background:
    linear-gradient(135deg, rgba(31, 212, 189, 0.2), transparent 40%),
    linear-gradient(315deg, rgba(46, 111, 232, 0.13), transparent 42%),
    linear-gradient(180deg, #ffffff, #eef8f4);
  box-shadow: 0 34px 90px rgba(17, 28, 25, 0.13);
}

.hero-visual::before {
  inset: 38px 36px auto;
  background: linear-gradient(90deg, transparent, rgba(16, 26, 40, 0.16), transparent);
}

.hero-visual::after {
  content: "Da Fit app";
  position: absolute;
  right: 22px;
  top: 18px;
  z-index: 3;
  padding: 7px 10px;
  border: 1px solid rgba(220, 232, 228, 0.82);
  border-radius: 8px;
  color: #50625d;
  background: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 800;
}

.app-shot {
  border-width: 9px;
  box-shadow:
    0 30px 72px rgba(16, 26, 40, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.34);
}

.shot-primary {
  left: 78px;
  top: 60px;
  width: 242px;
  height: 492px;
}

.shot-secondary {
  right: 76px;
  bottom: 52px;
  width: 242px;
  height: 492px;
}

.watch-badge {
  top: 238px;
  width: 164px;
  height: 164px;
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(31, 212, 189, 0.28), transparent 52%),
    #142234;
}

.watch-badge strong {
  color: #61ead5;
}

.answer-section {
  gap: 18px;
  padding: clamp(46px, 7vw, 82px) 0;
  border-top: 1px solid rgba(220, 232, 228, 0.9);
}

.answer-card {
  min-height: 250px;
  padding: clamp(26px, 4vw, 38px);
  background:
    linear-gradient(145deg, rgba(31, 212, 189, 0.08), transparent 44%),
    rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 56px rgba(17, 28, 25, 0.06);
}

.answer-card h2 {
  font-size: clamp(27px, 3.4vw, 40px);
}

.section-heading {
  margin-bottom: 32px;
}

.feature-band,
.setup-section,
.support-section,
.privacy-section {
  padding: clamp(64px, 8vw, 104px) 0;
}

.feature-band {
  border: 0;
  box-shadow:
    0 -1px 0 var(--line),
    0 1px 0 var(--line),
    0 0 0 100vmax rgba(255, 255, 255, 0.48);
  clip-path: inset(0 -100vmax);
}

.feature-grid,
.steps,
.privacy-grid {
  gap: 18px;
}

.feature-grid article,
.steps article,
.privacy-grid article {
  border-color: rgba(220, 232, 228, 0.92);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 48px rgba(17, 28, 25, 0.055);
}

.feature-grid article {
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.feature-grid article:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 68px rgba(17, 28, 25, 0.09);
}

.feature-shot {
  height: 210px;
  background:
    linear-gradient(135deg, rgba(31, 212, 189, 0.1), transparent 44%),
    #f9fcfb;
}

.steps article {
  min-height: 270px;
  padding: 28px;
}

.steps article b {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 54px;
  border: 1px solid rgba(13, 128, 111, 0.18);
  border-radius: 8px;
  background: #f2fbf8;
  color: var(--mint-dark);
}

.support-section {
  align-items: center;
  border-top: 1px solid var(--line);
}

.faq-list {
  gap: 12px;
}

details {
  border-color: rgba(220, 232, 228, 0.94);
  box-shadow: 0 12px 34px rgba(17, 28, 25, 0.045);
}

summary {
  padding: 20px;
  font-family: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

details p {
  margin: -4px 20px 20px;
  line-height: 1.7;
}

.privacy-section {
  border-top: 1px solid var(--line);
}

.privacy-grid article {
  min-height: 190px;
}

.site-footer {
  padding: 40px 0 56px;
}

[dir="rtl"] body {
  text-align: right;
}

[dir="rtl"] .hero,
[dir="rtl"] .answer-section,
[dir="rtl"] .section-heading,
[dir="rtl"] .support-section,
[dir="rtl"] .privacy-section {
  direction: rtl;
}

[dir="rtl"] .download-actions,
[dir="rtl"] .trust-row,
[dir="rtl"] .footer-links,
[dir="rtl"] .header-actions,
[dir="rtl"] .main-nav {
  flex-direction: row-reverse;
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
  }

  .hero,
  .download-hero,
  .download-help,
  .support-hero,
  .devices-hero,
  .support-console,
  .guide-category,
  .support-section,
  .share-section,
  .privacy-section,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

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

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
    padding: 10px 14px;
  }

  .small-cta {
    display: none;
  }

  .hero,
  .download-hero,
  .download-steps,
  .download-help,
  .support-hero,
  .devices-hero,
  .support-console,
  .support-overview,
  .usage-guides,
  .answer-section,
  .phone-guides,
  .feature-band,
  .setup-section,
  .support-section,
  .privacy-section,
  .share-section,
  .site-footer {
    width: min(360px, calc(100vw - 28px));
    max-width: 1180px;
    margin-left: 14px;
    margin-right: auto;
  }

  .hero {
    padding-top: 34px;
    display: block;
  }

  h1 {
    font-size: clamp(40px, 13vw, 54px);
    line-height: 1.08;
  }

  h2 {
    font-size: clamp(30px, 10vw, 44px);
  }

  .store-button {
    width: 100%;
  }

  .guide-button {
    width: 100%;
  }

  .hero-visual {
    min-height: 450px;
    margin-top: 32px;
    width: 100%;
  }

  .app-shot {
    border-width: 7px;
    border-radius: 25px;
  }

  .shot-primary {
    left: 18px;
    top: 36px;
    width: 142px;
    height: 336px;
    transform: rotate(-4deg);
  }

  .shot-secondary {
    right: 18px;
    bottom: 32px;
    width: 142px;
    height: 336px;
    transform: rotate(4deg);
  }

  .watch-badge {
    left: calc(50% - 54px);
    top: 184px;
    width: 108px;
    height: 108px;
    border-radius: 24px;
  }

  .watch-badge strong {
    font-size: 28px;
  }

  .feature-shot {
    height: 210px;
  }

  .phone {
    width: 142px;
    min-height: 286px;
    border-radius: 28px;
  }

  .screen {
    min-height: 244px;
    padding: 10px;
  }

  .phone-left {
    left: 18px;
    top: 58px;
    transform: rotate(-5deg);
  }

  .phone-right {
    right: 18px;
    bottom: 44px;
    transform: rotate(5deg);
  }

  .watch {
    left: calc(50% - 58px);
    top: 174px;
    width: 116px;
    height: 160px;
  }

  .strap {
    left: 36px;
    width: 44px;
  }

  .watch-face {
    border-radius: 30px;
  }

  .feature-grid,
  .answer-section,
  .steps,
  .steps-three,
  .help-card-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .guide-category-copy {
    position: static;
  }

  .feature-grid article,
  .steps article,
  .privacy-grid article {
    min-height: auto;
  }

  .site-footer {
    display: grid;
  }
}

@media (max-width: 980px) {
  .site-header {
    width: min(720px, calc(100vw - 24px));
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 48px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero-visual {
    max-width: 680px;
    margin-inline: auto;
  }

  .support-section,
  .privacy-section {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  body {
    background-size: 26px 26px, 26px 26px, auto;
  }

  .site-header {
    width: calc(100vw - 20px);
    min-height: 58px;
    margin-top: 8px;
    padding: 8px 10px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-mark img {
    width: 24px;
    height: 30px;
  }

  .hero,
  .download-hero,
  .download-steps,
  .download-help,
  .support-hero,
  .devices-hero,
  .support-console,
  .support-overview,
  .usage-guides,
  .answer-section,
  .phone-guides,
  .feature-band,
  .setup-section,
  .support-section,
  .share-section,
  .privacy-section,
  .site-footer {
    width: auto;
    margin-left: 14px;
    margin-right: 14px;
  }

  .hero {
    padding-top: 44px;
    padding-bottom: 38px;
    overflow: hidden;
  }

  .hero-copy,
  .download-copy,
  .download-actions,
  .trust-row {
    width: 100%;
    max-width: 348px;
  }

  .hero-copy,
  .download-copy {
    padding-right: 28px;
  }

  .download-copy h1 {
    font-size: clamp(42px, 12vw, 52px);
  }

  .download-note {
    max-width: 348px;
  }

  .qr-panel {
    width: 348px;
    max-width: 100%;
  }

  .eyebrow {
    font-size: 11px;
    line-height: 1.45;
  }

  h1 {
    font-size: clamp(38px, 11vw, 46px);
    line-height: 1.05;
    margin-bottom: 18px;
    overflow-wrap: anywhere;
  }

  h2 {
    font-size: clamp(28px, 8vw, 38px);
  }

  h3 {
    font-size: 19px;
  }

  .hero-text {
    max-width: 100%;
    font-size: 17px;
    line-height: 1.62;
    overflow-wrap: break-word;
  }

  .download-actions {
    gap: 10px;
    width: 100%;
    padding-right: 28px;
  }

  .store-button,
  .guide-button {
    flex: 0 0 100%;
    width: 100%;
    max-width: 100%;
    min-height: 58px;
  }

  .trust-row {
    gap: 8px;
  }

  .trust-row span {
    font-size: 12px;
  }

  .hero-visual {
    width: 348px;
    max-width: 100%;
    min-height: 430px;
    margin-top: 28px;
    margin-left: 0;
    margin-right: 0;
    border-radius: 8px;
  }

  .hero-visual::after {
    right: 12px;
    top: 12px;
    font-size: 11px;
  }

  .app-shot {
    border-width: 7px;
    border-radius: 24px;
  }

  .shot-primary {
    left: 22px;
    top: 44px;
    width: 146px;
    height: 318px;
  }

  .shot-secondary {
    right: 22px;
    bottom: 38px;
    width: 146px;
    height: 318px;
  }

  .watch-badge {
    left: calc(50% - 52px);
    top: 178px;
    width: 104px;
    height: 104px;
    border-radius: 8px;
  }

  .watch-badge span {
    font-size: 11px;
  }

  .watch-badge strong {
    font-size: 27px;
  }

  .answer-section,
  .feature-band,
  .setup-section,
  .support-section,
  .share-section,
  .privacy-section {
    padding: 52px 0;
  }

  .share-section {
    padding: 22px;
  }

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

  .support-hero h1,
  .devices-hero h1,
  .support-overview h2 {
    font-size: clamp(34px, 10vw, 42px);
    overflow-wrap: anywhere;
  }

  .support-hero > *,
  .devices-hero > *,
  .support-console > *,
  .support-note,
  .support-overview .section-heading,
  .usage-guides .section-heading,
  .phone-guides .section-heading,
  .guide-category,
  .guide-list {
    max-width: 348px;
  }

  .support-hero h1,
  .support-hero .hero-text,
  .support-note p,
  .support-overview h2,
  .guide-category-copy h2 {
    max-width: 320px;
  }

  .answer-card,
  .steps article,
  .privacy-grid article {
    padding: 22px;
  }

  .feature-shot {
    height: 232px;
  }

  .steps article b {
    margin-bottom: 36px;
  }
}

.download-actions .badge-button {
  flex: 0 0 auto;
  width: auto;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  line-height: 0;
}

.download-actions .badge-button:hover {
  transform: translateY(-2px);
  box-shadow: none;
}

.download-actions .badge-button img {
  display: block;
  height: 54px;
  width: auto;
  object-fit: contain;
}

.download-actions .badge-button.play img {
  height: 54px;
  margin: 0;
}

@media (max-width: 640px) {
  .download-actions .badge-button {
    flex-basis: auto;
    width: auto;
    max-width: 100%;
  }

  .download-actions .badge-button img {
    height: 52px;
    max-width: 100%;
  }

  .download-actions .badge-button.play img {
    height: 52px;
  }
}

@media (max-width: 980px) {
  .custom-hero,
  .custom-contact {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .custom-hero,
  .custom-proof,
  .custom-scope,
  .custom-process,
  .custom-contact {
    width: auto;
    margin-left: 14px;
    margin-right: 14px;
  }

  .custom-metric-grid,
  .scope-list,
  .custom-lead-form {
    grid-template-columns: 1fr;
  }

  .custom-contact {
    gap: 18px;
  }

  .custom-brief-card,
  .custom-lead-form {
    padding: 20px;
  }

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