@charset "UTF-8";
:root   {
  --black: #090a0b;
  --ink: #151718;
  --charcoal: #202325;
  --paper: #f5f6f4;
  --mist: #d8dcda;
  --grey: #8e9791;
  --line: rgba(255, 255, 255, 0.15);
  --container: 1200px;
}
*   {
  box-sizing: border-box;
}
html   {
  scroll-behavior: smooth;
}
section[id]   {
  scroll-margin-top: 94px;
}
body   {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--black);
  color: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}
a   {
  color: inherit;
  text-decoration: none;
}
button   {
  color: inherit;
  font: inherit;
}
img   {
  display: block;
  max-width: 100%;
}
.container   {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}
.site-header   {
  position: fixed;
  z-index: 20;
  top: 0;
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 10, 11, 0.92);
  backdrop-filter: blur(12px);
}
.header-inner   {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 78px;
  gap: 30px;
}
.brand   {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand img   {
  width: 38px;
  height: 38px;
  border: 1px solid #dfe2df;
  border-radius: 5px;
  object-fit: contain;
}
.brand span   {
  display: grid;
  gap: 1px;
}
.brand strong   {
  font-size: 15px;
  letter-spacing: 0.04em;
}
.brand small   {
  color: #9ba39e;
  font-size: 10px;
}
.site-nav   {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 2.7vw, 36px);
}
.site-nav a, .site-footer nav a   {
  color: #c7cdc9;
  font-size: 13px;
  transition: color 180ms ease;
}
.site-nav a:hover, .site-footer nav a:hover   {
  color: #fff;
}
.header-download   {
  min-height: 37px;
  padding: 9px 14px;
  border: 1px solid #f5f6f4;
  border-radius: 5px;
  background: #f5f6f4;
  color: #101112;
  font-size: 12px;
  font-weight: 700;
}
.mobile-label, .nav-toggle   {
  display: none;
}
.hero   {
  overflow: hidden;
  background: radial-gradient(circle at 72% 42%, #2b2e30 0%, #151718 26%, #090a0b 61%);
}
.hero-layout   {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 520px;
  min-height: 730px;
  align-items: center;
  gap: 60px;
  padding-top: 78px;
}
.hero-index, .section-index   {
  margin: 0 0 14px;
  color: #d4d9d5;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.17em;
}
.hero h1, h2   {
  margin: 0;
  font-family: Impact, "Arial Narrow", "Microsoft YaHei", sans-serif;
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 0.9;
}
.hero h1   {
  font-size: clamp(76px, 9vw, 132px);
}
.hero-lead   {
  max-width: 535px;
  margin: 28px 0 0;
  color: #c5cbc7;
  font-size: 16px;
  line-height: 2;
}
.hero-actions   {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 13px;
  margin-top: 25px;
}
.primary-action   {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  min-height: 52px;
  padding: 0 21px;
  border: 1px solid #f5f6f4;
  border-radius: 5px;
  background: #f5f6f4;
  color: #0c0d0e;
  font-size: 14px;
  font-weight: 700;
}
.primary-action span   {
  font-size: 20px;
}
.secondary-action   {
  color: #e1e4e1;
  font-size: 13px;
  font-weight: 700;
}
.secondary-action b   {
  margin-left: 5px;
  font-size: 15px;
}
.age-label   {
  display: block;
  margin-top: 11px;
  color: #aeb6b1;
  font-size: 12px;
}
.hero-rule   {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 47px;
  color: #8d9790;
  font-size: 11px;
}
.hero-rule span::before   {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border: 1px solid #bfc5c0;
  border-radius: 50%;
  content: "";
}
.phone-stage   {
  position: relative;
  min-height: 610px;
}
.stage-line   {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}
.line-one   {
  top: 32px;
  left: 28px;
  width: 440px;
  height: 440px;
}
.line-two   {
  top: 102px;
  left: 94px;
  width: 310px;
  height: 310px;
}
.stage-note   {
  position: absolute;
  color: #aeb5b0;
  font-size: 10px;
  letter-spacing: 0.14em;
}
.note-top   {
  top: 45px;
  right: 0;
}
.note-bottom   {
  right: 0;
  bottom: 36px;
}
.phone-shell   {
  position: absolute;
  z-index: 1;
  top: 6px;
  left: 126px;
  width: 282px;
  padding: 8px;
  border: 1px solid #6d7470;
  border-radius: 34px;
  background: #050606;
  box-shadow: 24px 28px 60px rgba(0, 0, 0, 0.45);
}
.phone-speaker   {
  position: absolute;
  z-index: 2;
  top: 13px;
  left: 50%;
  width: 86px;
  height: 15px;
  border-radius: 0 0 10px 10px;
  background: #050606;
  transform: translateX(-50%);
}
.phone-screen   {
  min-height: 558px;
  overflow: hidden;
  padding: 13px 13px 10px;
  border-radius: 27px;
  background: #f4f5f3;
  color: #202324;
}
.phone-status, .phone-title, .phone-score, .phone-tabs, .phone-data > div, .phone-nav   {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.phone-status   {
  padding: 0 3px 10px;
  font-size: 9px;
  font-weight: 700;
}
.phone-title   {
  padding: 9px 7px 13px;
  border-top: 1px solid #e0e3df;
  font-size: 15px;
}
.phone-title span   {
  color: #78817c;
  font-size: 9px;
}
.phone-score   {
  padding: 12px;
  border: 1px solid #d8ddd8;
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 5px 10px rgba(23, 29, 25, 0.08);
}
.phone-score div   {
  display: grid;
  gap: 1px;
}
.phone-score small   {
  color: #757f79;
  font-size: 9px;
}
.phone-score b   {
  font-size: 25px;
}
.phone-score > span   {
  color: #637169;
  font-size: 9px;
}
.phone-tabs   {
  gap: 4px;
  margin: 15px 0 10px;
}
.phone-tabs span   {
  flex: 1;
  padding: 7px 2px;
  border-radius: 4px;
  background: #e6eae6;
  color: #66716a;
  font-size: 8px;
  text-align: center;
}
.phone-tabs .is-active   {
  background: #202324;
  color: #fff;
}
.phone-setting   {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 4px;
  border-bottom: 1px solid #e0e4e0;
}
.phone-setting div   {
  display: grid;
  gap: 1px;
}
.phone-setting b   {
  font-size: 10px;
}
.phone-setting small   {
  color: #89918d;
  font-size: 8px;
}
.phone-setting i   {
  width: 26px;
  height: 14px;
  border-radius: 9px;
  background: #c9cfca;
}
.phone-setting i::after   {
  display: block;
  width: 12px;
  height: 12px;
  margin: 1px;
  border-radius: 50%;
  background: #fff;
  content: "";
}
.phone-data   {
  margin-top: 13px;
  padding: 11px;
  border-radius: 9px;
  background: #e9ece9;
}
.phone-data > strong   {
  display: block;
  margin-bottom: 9px;
  font-size: 10px;
}
.phone-data span   {
  display: grid;
  gap: 1px;
  color: #78817c;
  font-size: 7px;
}
.phone-data b   {
  color: #252c27;
  font-size: 10px;
}
.phone-start   {
  width: 100%;
  margin-top: 14px;
  padding: 11px 0;
  border: 0;
  border-radius: 5px;
  background: #1e2220;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}
.phone-nav   {
  margin: 14px -2px 0;
  padding-top: 9px;
  border-top: 1px solid #e1e4e1;
}
.phone-nav span   {
  display: grid;
  gap: 1px;
  color: #8b948e;
  font-size: 13px;
  text-align: center;
}
.phone-nav b   {
  font-size: 7px;
  font-weight: 400;
}
.phone-nav .selected   {
  color: #1a201c;
}
.section   {
  padding: 112px 0;
}
.heading-row   {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 50px;
}
.heading-row > p   {
  max-width: 430px;
  margin: 0 0 4px auto;
  color: #69736c;
  font-size: 15px;
  line-height: 1.9;
}
h2   {
  font-size: clamp(48px, 5.5vw, 78px);
}
.essentials   {
  background: #edf0ec;
  color: #161a17;
}
.section-index   {
  color: #59645d;
}
.feature-layout   {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 54px;
  background: #cbd0cc;
  border: 1px solid #cbd0cc;
}
.feature-item   {
  position: relative;
  min-height: 310px;
  padding: 32px;
  background: #f9faf8;
}
.feature-no   {
  position: absolute;
  top: 29px;
  right: 31px;
  color: #7d8780;
  font-size: 11px;
  font-weight: 700;
}
.feature-symbol   {
  margin: 43px 0 42px;
  color: #1c221e;
  font-family: Arial, sans-serif;
  font-size: 40px;
}
.feature-item h3   {
  margin: 0 0 10px;
  font-size: 20px;
}
.feature-item p   {
  max-width: 285px;
  margin: 0;
  color: #647067;
  font-size: 14px;
  line-height: 1.9;
}
.guide-section   {
  background: #111314;
}
.guide-layout   {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 90px;
  align-items: center;
}
.guide-panel > p:not(.section-index)   {
  max-width: 380px;
  margin: 24px 0;
  color: #aeb7b1;
  font-size: 15px;
  line-height: 1.9;
}
.guide-panel a   {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.guide-panel a b   {
  margin-left: 9px;
}
.guide-steps   {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.guide-steps li   {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 25px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.guide-steps > li > span   {
  color: #e3e7e3;
  font-family: Impact, Arial, sans-serif;
  font-size: 35px;
}
.guide-steps h3   {
  margin: 0 0 5px;
  font-size: 19px;
}
.guide-steps p   {
  margin: 0;
  color: #9ca59f;
  font-size: 13px;
}
.screens-section   {
  background: #e1e5e1;
  color: #121513;
}
.screens-heading > p   {
  color: #69736c;
}
.screen-grid   {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 54px;
}
.screen-grid figure   {
  min-width: 0;
  margin: 0;
}
.screen-grid img   {
  width: 100%;
  height: auto;
  border: 6px solid #222625;
  border-radius: 18px;
  box-shadow: 0 16px 28px rgba(15, 19, 16, 0.2);
  object-fit: contain;
}
.screen-grid figcaption   {
  display: grid;
  gap: 2px;
  padding: 16px 3px 0;
}
.screen-grid figcaption b   {
  font-size: 15px;
}
.screen-grid figcaption span   {
  color: #6f7973;
  font-size: 12px;
}
.faq-section   {
  background: #f5f6f4;
  color: #161a17;
}
.faq-layout   {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
}
.faq-list   {
  border-top: 1px solid #c9cfca;
}
.faq-item, .official-site   {
  border-bottom: 1px solid #c9cfca;
}
.faq-item button, .official-site summary   {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border: 0;
  background: transparent;
  color: #1f2521;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  text-align: left;
  list-style: none;
}
.official-site summary::-webkit-details-marker   {
  display: none;
}
.faq-item button b, .official-site summary b   {
  color: #58625c;
  font-size: 25px;
  font-weight: 300;
  transition: transform 180ms ease;
}
.faq-item button[aria-expanded="true"] b, .official-site[open] summary b   {
  transform: rotate(45deg);
}
.faq-item > div   {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 180ms ease;
}
.faq-item.is-open > div   {
  grid-template-rows: 1fr;
}
.faq-item > div p   {
  min-height: 0;
  margin: 0;
  overflow: hidden;
  color: #68736c;
  font-size: 14px;
  line-height: 1.85;
}
.faq-item.is-open > div p   {
  padding: 0 28px 20px 0;
}
.official-site p   {
  margin: 0 0 20px;
  color: #68736c;
  font-size: 14px;
}
.official-site p a   {
  color: #37423b;
  text-decoration: underline;
}
.comments-section   {
  background: #17191a;
}
.comments-heading > p   {
  color: #c6cdc8;
}
.comment-grid   {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 45px;
}
.comment-grid article   {
  display: flex;
  min-height: 282px;
  flex-direction: column;
  padding: 23px;
  border-top: 5px solid #f1f3f0;
  border-radius: 5px;
  background: #f7f8f6;
  color: #1d241f;
}
.comment-grid header   {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.comment-grid header div   {
  display: flex;
  align-items: center;
  gap: 10px;
}
.avatar-icon   {
  width: 33px;
  height: 33px;
  border-radius: 50%;
  background: #e1e5e1 url("../icons/avatar.svg") center / 18px 18px no-repeat;
}
.comment-grid header b   {
  font-size: 14px;
}
.comment-grid header > span   {
  color: #5c665f;
  font-size: 13px;
  letter-spacing: 0.07em;
}
.comment-grid article > p   {
  margin: 0;
  color: #334039;
  font-size: 13px;
  line-height: 1.95;
}
.comment-grid time   {
  margin-top: auto;
  padding-top: 16px;
  color: #6f7973;
  font-size: 11px;
  text-align: right;
}
.download-section   {
  padding: 105px 0;
  background: #0b0c0d;
  text-align: center;
}
.download-section img   {
  width: 54px;
  height: 54px;
  margin: 0 auto 22px;
  border: 1px solid #dadeda;
  border-radius: 5px;
  object-fit: contain;
}
.download-section .section-index   {
  color: #bdc5bf;
}
.download-section h2   {
  margin-bottom: 20px;
}
.download-section p:not(.section-index)   {
  max-width: 520px;
  margin: 0 auto 28px;
  color: #abb4ae;
  font-size: 14px;
}
.download-section .primary-action   {
  margin: 0 auto;
}
.site-footer   {
  padding: 28px 0;
  background: #060707;
}
.site-footer > .container   {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-footer .brand img   {
  width: 31px;
  height: 31px;
}
.site-footer .brand strong   {
  font-size: 13px;
}
.site-footer nav   {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 17px;
}
.site-footer nav a   {
  font-size: 11px;
}
.site-footer p   {
  margin: 0;
  color: #68716c;
  font-size: 11px;
  white-space: nowrap;
}
.back-top   {
  position: fixed;
  z-index: 10;
  right: 22px;
  bottom: 22px;
  display: grid;
  width: 39px;
  height: 39px;
  place-items: center;
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 50%;
  background: rgba(8,9,10,0.88);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}
.back-top.is-visible   {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
@media (max-width: 980px)   {
  .hero-layout   {
    grid-template-columns: 1fr 440px;
    gap: 25px;
  }
  .phone-shell   {
    left: 82px;
  }
  .feature-layout   {
    grid-template-columns: 1fr 1fr;
  }
  .screen-grid   {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .screen-grid figure   {
    max-width: 280px;
    margin: 0 auto;
  }
  .comment-grid   {
    grid-template-columns: 1fr 1fr;
  }
  .comment-grid article:last-child   {
    grid-column: span 2;
  }
}
@media (max-width: 980px)   {
  .comment-grid article:last-child   {
    grid-column: auto;
  }
}
@media (max-width: 720px)   {
  .container   {
    width: min(calc(100% - 32px), var(--container));
  }
  .site-header   {
    background: #fff;
    border-bottom-color: #e2e5e2;
    backdrop-filter: none;
  }
  .header-inner   {
    display: flex;
    min-height: 64px;
    gap: 0;
  }
  .brand img   {
    width: 33px;
    height: 33px;
    border-color: #2a2e2c;
  }
  .brand strong   {
    color: #212522;
    font-size: 13px;
  }
  .brand small   {
    color: #6e7771;
    font-size: 8px;
  }
  .header-download   {
    order: 2;
    min-width: 84px;
    min-height: 39px;
    margin-left: auto;
    padding: 11px 10px;
    border-color: #202321;
    background: #202321;
    color: #fff;
    font-size: 12px;
    text-align: center;
  }
  .desktop-label   {
    display: none;
  }
  .mobile-label   {
    display: inline;
  }
  .nav-toggle   {
    position: relative;
    order: 3;
    display: inline-flex;
    width: 40px;
    height: 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-left: 8px;
    padding: 0;
    border: 1px solid #424844;
    border-radius: 5px;
    background: transparent;
  }
  .nav-toggle i   {
    display: block;
    width: 17px;
    height: 1px;
    background: #424844;
  }
  .nav-toggle b   {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
  .site-nav   {
    position: absolute;
    top: 64px;
    left: 0;
    display: grid;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid transparent;
    background: #fff;
    opacity: 0;
    transition: none;
  }
  .site-nav.is-open   {
    max-height: 320px;
    padding: 8px 16px 13px;
    border-bottom-color: #e2e5e2;
    opacity: 1;
  }
  .site-nav a   {
    padding: 10px 0;
    border-bottom: 1px solid #ecefec;
    color: #303633;
    font-size: 14px;
  }
  .site-nav a:last-child   {
    border-bottom: 0;
  }
  .hero-layout   {
    display: block;
    min-height: 0;
    padding-top: 121px;
    padding-bottom: 54px;
  }
  .hero-copy   {
    text-align: center;
  }
  .hero-index   {
    justify-content: center;
  }
  .hero h1   {
    font-size: clamp(65px, 19vw, 85px);
  }
  .hero-lead   {
    margin: 22px auto 0;
    font-size: 14px;
    line-height: 1.9;
  }
  .hero-actions   {
    align-items: center;
    margin-top: 24px;
  }
  .age-label   {
    width: min(230px, 100%);
    margin: 12px auto 0;
    text-align: center;
  }
  .hero-rule   {
    justify-content: center;
    margin-top: 31px;
  }
  .phone-stage   {
    min-height: 500px;
    margin-top: 28px;
  }
  .phone-shell   {
    top: 0;
    left: 50%;
    width: 232px;
    border-radius: 29px;
    transform: translateX(-50%);
  }
  .phone-screen   {
    min-height: 459px;
    padding: 11px 11px 8px;
    border-radius: 22px;
  }
  .phone-title   {
    padding-bottom: 9px;
    font-size: 13px;
  }
  .phone-score   {
    padding: 9px;
  }
  .phone-score b   {
    font-size: 20px;
  }
  .phone-tabs   {
    margin: 10px 0 7px;
  }
  .phone-setting   {
    padding: 8px 3px;
  }
  .phone-data   {
    margin-top: 9px;
  }
  .phone-start   {
    margin-top: 9px;
    padding: 9px;
  }
  .phone-nav   {
    margin-top: 9px;
  }
  .line-one   {
    top: 10px;
    left: 50%;
    width: 370px;
    height: 370px;
    transform: translateX(-50%);
  }
  .line-two   {
    top: 62px;
    left: 50%;
    width: 275px;
    height: 275px;
    transform: translateX(-50%);
  }
  .stage-note   {
    display: none;
  }
  .section   {
    padding: 75px 0;
  }
  .heading-row, .guide-layout, .faq-layout   {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .heading-row > p   {
    margin: 0;
    font-size: 14px;
  }
  .heading-row h2, .guide-panel h2, .faq-layout h2   {
    font-size: clamp(43px, 13vw, 58px);
  }
  .feature-layout   {
    grid-template-columns: 1fr;
    margin-top: 34px;
  }
  .feature-item   {
    min-height: 250px;
    padding: 25px;
  }
  .feature-symbol   {
    margin: 34px 0;
  }
  .guide-layout   {
    gap: 41px;
  }
  .guide-steps li   {
    grid-template-columns: 50px 1fr;
    gap: 14px;
  }
  .guide-steps > li > span   {
    font-size: 30px;
  }
  .screen-grid   {
    display: flex;
    gap: 14px;
    margin-right: calc(50% - 50vw);
    padding-right: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }
  .screen-grid figure   {
    min-width: 224px;
    margin: 0;
    scroll-snap-align: start;
  }
  .faq-item button, .official-site summary   {
    font-size: 14px;
  }
  .comment-grid   {
    grid-template-columns: 1fr;
    margin-top: 31px;
  }
  .comment-grid article:last-child   {
    grid-column: auto;
  }
  .site-footer > .container   {
    flex-direction: column;
    text-align: center;
  }
  .site-footer p   {
    white-space: normal;
  }
  .back-top   {
    right: 16px;
    bottom: 16px;
  }
  a, button, summary, [role="button"]   {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    transition: none !important;
  }
  a:focus-visible, button:focus-visible, summary:focus-visible   {
    outline: 2px solid #79837d;
    outline-offset: 3px;
  }
}