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

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

body,
html {
  width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}


/* ── SHARED ── */
.btn-primary {
  background: #000;
  color: #FFE80A;
  border: 1.5px solid #FFE80A;
  border-radius: 40px;
  padding: 22px 80px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  display: inline-block;
  transition: opacity .2s;
  text-align: center;
  box-shadow: 0px 0px 9px 0 #FFB400;
}

.btn-one {
  background: #FFE90A;
  color: #000;
  box-shadow: 0px 0px 15px 1px #FFB400;
  border-radius: 42px;
  border: 1px solid #FFFFFF;
}

.btn-primary:hover {
  opacity: .85;
}

.section-h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  color: #000;
  margin-bottom: 20px;
  text-align: center;
}

.section-h2.text-left {
  text-align: left;
}

.section-sub {
  font-size: 16px;
  line-height: 1.7;
  color: #333;
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

/* step-num (shared) */
.step-num {
  background: #FFE808;
  color: #000;
  font-size: 18px;
  font-weight: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-text strong {
  font-size: 16px;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}

.step-text {
  font-size: 15px;
  line-height: 1.6;
  color: #333;
}

/* glance table */
.glance-table-wrap {
  max-width: 973px;
  margin: 0 auto;
  overflow: hidden;
  background: #FFD110;
  box-shadow: 0px 0px 34px 0px rgba(255, 236, 13, 0.77);
  border-radius: 20px;
  padding: 36px 12px;
}

.glance-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.glance-table tbody tr:nth-child(odd) {
  background: #FFFAC8;
}

.glance-table tbody tr:nth-child(even) {
  background: #fff;
}

.glance-table td {
  padding: 0 24px;
  height: 60px;
  font-size: 15px;
  color: #000;
  vertical-align: middle;
}

.glance-table td.label {
  width: 42%;
  white-space: nowrap;
  border-right: 1px solid #FFCA36;
}

/* FAQ */
.faq-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: #000;
  text-align: center;
  margin-bottom: 24px;
}

.faq-section .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-section details {
  background: rgba(255, 255, 255, 0.93);
  border-radius: 12px;
  overflow: hidden;
}

.faq-section details[open] {
  background: linear-gradient(180deg, #FFE808 0%, #FFEF10 100%);
  box-shadow: 0 0 26px 0 rgba(255, 236, 13, 0.77);
}

.faq-section summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 50px 20px 26px;
  font-size: 16px;
  font-weight: 700;
  color: #000;
  position: relative;
  min-height: 60px;
  display: flex;
  align-items: center;
}

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

.faq-section summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  font-weight: 400;
  color: #000;
  line-height: 1;
}

.faq-section details[open] summary::after {
  content: "–";
}

.faq-section .ans {
  padding: 0 26px 22px;
  font-size: 14px;
  line-height: 1.75;
  color: #000;
}

.faq-section .ans a {
  color: #008bff;
  text-decoration: underline;
}

.faq-section details:not([open]) .ans {
  display: none;
}

/* ── 通用左图右文 / 左文右图 布局 ── */
.media-row {
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 40px 0;
}

.media-row:last-child {
  border-bottom: none;
}

.media-row-img {
  flex: 1;
  min-width: 0;
}

.media-row-img img {
  width: 100%;
  display: block;
  border-radius: 16px;
  object-fit: cover;
}

.media-row-text {
  width: 450px;
  flex-shrink: 0;
}

.media-row-text h3 {
  font-size: 22px;
  font-weight: 700;
  color: #000;
  margin-bottom: 12px;
  line-height: 1.3;
}

.media-row-text h3+h3,
.media-row-text p+h3 {
  margin-top: 28px;
}

.media-row-text p {
  font-size: 15px;
  line-height: 1.75;
  color: #333;
}

.media-row-reverse {
  flex-direction: row-reverse;
}

/* v1-s6 步骤（复用） */
.v1-s6-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 40px auto;
  width: 500px;
  text-align: left;
}

.v1-s6-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.v1-s6-cta {
  margin-top: 16px;
  text-align: center;
}


main {
  background: url(/images/instant-video-chat/bg1.png) right 5508px no-repeat, url(/images/instant-video-chat/bg2.png) left 6483px no-repeat, url(/images/instant-video-chat/bg3.png) right 7383px no-repeat;
  background-size: unset;
}


/* ── SECTION 1: HERO ── */
.iv-s1 {
  padding-top: 64px;
  background: url('/images/instant-video-chat/s1-bg.jpg') right center / cover no-repeat;
  background-color: #FFFDE2;
  overflow: hidden;
  height: 721px;
}

.iv-s1-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 40px 0;
  display: flex;
  align-items: center;
  gap: 40px;
}

.iv-s1-text {
  width: 600px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.iv-s1-text h1 {
  font-size: 44px;
  font-weight: 900;
  line-height: 1.2;
  color: #000;
}

.iv-hero-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #333;
  max-width: 480px;
}

.iv-s1-photo {
  flex: 1;
  min-width: 0;
}

.iv-s1-photo img,
.iv-s1-photo picture img {
  width: 100%;
  display: block;
  border-radius: 16px;
  object-fit: cover;
}

/* ── SECTION 2: WHAT IS + GLANCE TABLE ── */
.iv-s2 {
  padding: 40px 0;
}

.iv-s2 .inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.iv-s2-top {
  display: flex;
  align-items: flex-end;
  margin-bottom: 24px;
  border-radius: 44px;
}

.iv-s2-intro {
  flex: 1;
  padding: 30px;
  width: 571px;
  background: #FFFDE2;
  border-radius: 30px;
  font-size: 16px;
}

.iv-s2-intro p {
  line-height: 1.75;
  color: #333;
  font-weight: 500;
}

.iv-s2-intro ul {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.iv-s2-intro ul li {
  font-size: 14px;
  line-height: 1.7;
  color: #333;
}

.iv-s2-intro a {
  color: #1769DC;
  text-decoration: underline;
}

.iv-s2-intro2 {
  align-items: stretch;
}

.iv-s2-intro2 .iv-s2-intro {
  background: #FFE907;
  border-radius: 44px 0 0 44px;
  border-right-width: 0;
  border-left: 1px solid #FFD320;
}

.iv-s2-img-wrap {
  flex-shrink: 0;
  width: 548px;
}

.iv-s2-intro2 .iv-s2-img-wrap {
  background: #FFD110;
  border-radius: 0 44px 44px 0;
  align-items: center;
  justify-content: center;

  display: flex;
}

.iv-s2-img-wrap img {}

/* ── SECTION 3: WHEN SPEED IS THE POINT ── */
.iv-s3 {
  background: #FFFAC8;
  padding: 40px 0;
}

.iv-s3 .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 40px;
}

.iv-s3-grid {
  display: flex;
  flex-direction: column;
}

/* v1-steps (共用) */
.v1-steps-wrap {
  display: flex;
  align-items: center;
  gap: 64px;
}

.v1-steps-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.v1-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.v1-step-num {
  background: #FFE808;
  color: #000;
  font-size: 20px;
  font-weight: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.v1-step-text h3 {
  font-size: 18px;
  font-weight: 700;
  color: #000;
  margin-bottom: 8px;
}

.v1-step-text p {
  font-size: 14px;
  line-height: 1.7;
  color: #444;
}

.v1-steps-img {
  flex-shrink: 0;
  width: 420px;
}

.v1-steps-img img {
  width: 100%;
  display: block;
  border-radius: 16px;
}

/* ── SECTION 4: HOW WE GOT TO 2.6 SECONDS ── */
.iv-s4 {
  padding: 40px 0 500px;
  background: url('/images/instant-video-chat/s5-bg.png') bottom center no-repeat, #FFFAC8;

}

.iv-s4 .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 40px;
}

.iv-s4 .v1-steps-wrap {
  align-items: flex-start;
}

.iv-s4 .v1-step-text h3 {
  font-size: 18px;
  font-weight: 700;
  color: #000;
  margin-bottom: 8px;
}

.iv-s4 .v1-step-text p {
  font-size: 14px;
  line-height: 1.7;
  color: #444;
}

.iv-s4-summary {
  flex-shrink: 0;
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.iv-s4-result-box {

  padding: 24px 20px;
  position: relative;
  background: #FFF0AF;
  box-shadow: 0px 0px 12px 0px rgba(255, 251, 142, 0.87);
  border-radius: 24px;
  border: 1px solid #FFF100;
}

.iv-s4-result-title {
  font-size: 20px;
  font-weight: 900;
  color: #000;
  line-height: 1.3;
  margin-bottom: 10px;
}

.iv-s4-result-sub {
  font-size: 14px;
  font-weight: 600;
  color: #E05A00;
  line-height: 1.5;
}

.iv-s4-result-img {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 300px;
  opacity: 0.9;
}

.iv-s4-coins {
  font-size: 14px;
  line-height: 1.75;
  color: #444;
  text-align: center;
}

/* ── SECTION 5: THE REAL SPEED NUMBERS ── */
.iv-s5 {
  padding: 40px 0;
}

.iv-s5 .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 40px;
}

.iv-s5-grid {
  display: flex;
  flex-direction: column;
}

/* ── SECTION 6: WHY MOST PLATFORMS ARE SLOWER ── */
.iv-s6 {
  padding: 40px 0;
}

.iv-s6 .inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

.iv-s6-grid {
  display: flex;
  flex-direction: column;
}

/* ── SECTION 7: OPEN YOUR FIRST ── */
.iv-s7 {
  padding: 40px 0;
}

.iv-s7 .inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
}

.iv-s7-note {
  font-size: 15px;
  color: #555;
  line-height: 1.6;
  margin: 0 auto 24px;
  text-align: center;
}

/* ── SECTION 8: FAQ ── */
.iv-s8 {
  padding: 40px 0;
  background: linear-gradient(360deg, #fff8ad 0%, rgba(255, 255, 255, 0) 100%);
}

.iv-s8 .inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ── SECTION 9: FINAL CTA ── */
.iv-s9 {
  background: url('/images/instant-video-chat/s8-bg.png') bottom center no-repeat, linear-gradient(to bottom, #fff8ad, #FFED24);
  background-size: 100% auto;
  display: flex;
  align-items: center;
}

.iv-s9 .inner {
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 40px 650px;
}

.iv-s9-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.iv-s9-text h2 {
  font-size: 48px;
  font-weight: 900;
  color: #000;
  line-height: 1.1;
}

.iv-s9-text p {
  font-size: 18px;
  line-height: 1.65;
  color: #000;
}

.iv-s9-notes {
  font-size: 15px;
  color: #000;
  line-height: 1.8;
}

@media only screen and (min-width: 768px) {
  .hidden-sm-and-up {
    display: none !important;
  }
}

/* ── RESPONSIVE ── */
@media (max-width: 767px) {
  .hidden-xs-only {
    display: none !important;
  }

  .site-header {
    padding: 0 16px;
  }

  .site-header .inner {
    gap: 12px;
  }

  .site-header .the-nav {
    display: none;
  }

  .section-h2 {
    font-size: 26px;
  }

  .section-sub {
    font-size: 14px;
    margin-bottom: 28px;
  }

  .btn-primary {
    font-size: 16px;
    padding: 16px 40px;
  }

  .btn-one {
    font-size: 18px;
    width: 100%;
    text-align: center;
  }

  .glance-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 16px;
    padding: 20px 8px;
  }

  /* S1 */
  .iv-s1 {
    background: url('/images/instant-video-chat/s1-bg-m.jpg') top center no-repeat;
    background-size: 100% auto;
    background-color: #FFFDE2;
    height: auto;
  }

  .iv-s1-inner {
    flex-direction: column;
    padding: 340px 20px 40px;
    gap: 24px;
  }

  .iv-s1-text {
    width: 100%;
    align-items: center;
    text-align: center;
    gap: 20px;
  }

  .iv-s1-text h1 {
    font-size: 32px;
    text-align: left;
    text-shadow: 8px 6px 13px #FFED0E;
  }

  .iv-hero-desc {
    font-size: 14px;
    max-width: 100%;
    text-align: left;
  }

  .iv-s1-photo {
    width: 100%;
    max-height: 280px;
    overflow: hidden;
    border-radius: 16px;
  }

  .iv-s1-photo picture img,
  .iv-s1-photo img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: 16px;
  }

  /* S2 */
  .iv-s2 {
    padding: 40px 0;
  }

  .iv-s2 .inner {
    padding: 0 20px;
  }

  .iv-s2-top {
    flex-direction: column;
    margin-bottom: 18px;
    border-radius: 20px;
  }

  .iv-s2-img-wrap {
    width: 100%;
    border-radius: 20px 20px 0 0;
    overflow: hidden;
  }

  .iv-s2-img-wrap img {
    max-width: 100%;
  }

  .iv-s2-intro {
    border-radius:  20px;
    max-width: 100%;
  }

  .iv-s2-intro2 {
    flex-direction: column-reverse;
  }

  .iv-s2-intro2 .iv-s2-intro {
    border-radius: 0 0 20px 20px;
  }

  .iv-s2-intro2 .iv-s2-img-wrap {
     border-radius: 20px 20px 0 0;
  }

  /* S3 */
  .iv-s3 {
    padding: 40px 0;
  }

  .iv-s3 .inner {
    padding: 0 20px;
  }

  .media-row,
  .media-row-reverse {
    flex-direction: column !important;
    gap: 20px;
    padding: 28px 0;
  }

  .media-row-text {
    width: 100%;
  }

  .media-row-text h3 {
    font-size: 18px;
  }

  /* S4 */
  .iv-s4 {
    padding: 30px 0 200px;
    background-size: contain;
  }

  .iv-s4 .inner {
    padding: 0 20px;
  }

  .v1-steps-wrap {
    flex-direction: column;
    gap: 32px;
  }

  .iv-s4-summary {
    width: 100%;
  }

  .iv-s4-result-img {
    width: 80px;
  }

  /* S5 */
  .iv-s5 {
    padding: 30px 0;
  }

  .iv-s5 .inner {
    padding: 0 20px;
  }

  /* S6 */
  .iv-s6 {
    padding: 30px 0;
  }

  .iv-s6 .inner {
    padding: 0 20px;
  }

  /* S7 */
  .iv-s7 {
    padding: 30px 0;
  }

  .iv-s7 .inner {
    padding: 0 20px;
  }

  .v1-s6-steps {
    width: 100%;
  }

  /* S8 */
  .iv-s8 {
    padding: 30px 0;
  }

  .iv-s8 .inner {
    padding: 0 20px;
  }

  .faq-section summary {
    font-size: 14px;
    padding: 16px 44px 16px 18px;
  }

  .faq-section .ans {
    font-size: 12px;
    padding: 0 18px 18px;
  }

  /* S9 */
  .iv-s9 .inner {
    padding: 20px 20px 220px;
  }

  .iv-s9-text h2 {
    font-size: 28px;
  }

  .iv-s9-text p {
    font-size: 15px;
  }

  .iv-s9-notes {
    font-size: 13px;
  }
}