/* 介绍页独立作用域，避免影响公共导航、页脚和弹窗。 */
.browser-introduce { --intro-blue: #008bff; color: #111827; background: #fff; font: 14px/1.5 Arial, "Microsoft YaHei", sans-serif; }
.browser-introduce *, .browser-introduce *::before, .browser-introduce *::after { box-sizing: border-box; }
.browser-introduce [hidden] { display: none !important; }
.browser-introduce h1, .browser-introduce h2, .browser-introduce h3, .browser-introduce p { margin: 0; }
.browser-introduce button, .browser-introduce a { font: inherit; }
.browser-introduce button { cursor: pointer; }
/* 公共 cicon 样式将 i 标签设为图标字体；此页 i 是文字标签。 */
.browser-introduce i { font-family: Arial, "Microsoft YaHei", sans-serif !important; }
.browser-introduce a { text-decoration: none; }
.browser-introduce button:focus-visible, .browser-introduce a:focus-visible { outline: 2px solid #006ed0; outline-offset: 4px; }
.browser-introduce img { max-width: 100%; vertical-align: middle; }
.browser-introduce .hero-inner, .browser-introduce .problem-stage, .browser-introduce .plans, .browser-introduce .perks, .browser-introduce .environment-inner, .browser-introduce .quick-steps { width: min(1280px, calc(100% - 48px)); margin: 0 auto; }
.browser-introduce .heading { text-align: center; margin-bottom: 50px; padding: 0 24px; }
.browser-introduce .heading h2 { font-size: 42px; font-weight: 700; line-height: 1.5; color: #101828; }
.browser-introduce .heading p { margin-top: 16px; font-size: 16px; color: #858586FF; }
.browser-introduce > .hero { position: relative; padding: 68px 0 70px; text-align: center; background: linear-gradient(180deg, #f0f6ff, #fff); }
.browser-introduce .hero-bg { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 50% 0, #cce2ff 0, transparent 65%); }
.browser-introduce .hero-inner { position: relative; }
.browser-introduce .platform-ticker { width: max-content; max-width: 100%; height: 32px; margin: 0 auto 12px; overflow: hidden; border: 1px solid #e1edff; border-radius: 30px; background: #f9fcff; }
.browser-introduce .platform-ticker-track { width: auto; }
.browser-introduce .platform-ticker-item { display: flex; align-items: center; justify-content: flex-start; text-align: left; gap: 6px; height: 30px; padding: 3px 12px; color: #2794ff; font-size: 14px; white-space: nowrap; }
.browser-introduce .platform-ticker b { font-weight: 400; }
.browser-introduce .platform-mark { width: 18px; height: 18px; object-fit: contain; }
.browser-introduce .hero h1 { font-size: 48px; font-weight: 700; line-height: 1.45; color: #080808; }
.browser-introduce > .hero h2 { margin-top: 16px; color: #0b0b0b; font-size: 40px; font-weight: 700; line-height: 1.5; white-space: nowrap; }
.browser-introduce .hero h2 span { color: #168fff; background: linear-gradient(90deg, #168fff, #03ccdf); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.browser-introduce .hero-inner > p { margin-top: 12px; font-size: 16px; color: #858586FF; }
.browser-introduce .actions { display: flex; justify-content: center; align-items: center; gap: 24px; margin-top: 42px;font-size: 16px; }
.browser-introduce .hero-download, .browser-introduce .hero-register { width: 198px; height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--intro-blue); border-radius: 4px; background: var(--intro-blue); color: white; }
.browser-introduce .hero-register { color: var(--intro-blue); background: white; }
.browser-introduce .hero-download:hover, .browser-introduce .plan-buy:hover { background: #007be5; }
.browser-introduce .download-menu-wrap { position: relative; }
.browser-introduce .download-popover { position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%); width: 334px; padding: 10px; border-radius: 14px; background: #fff; box-shadow: 0 14px 48px #123e6c33; z-index: 30; text-align: left; }
.browser-introduce .download-popover::before { content: ""; position: absolute; top: -7px; left: calc(50% - 7px); width: 14px; height: 14px; transform: rotate(45deg); background: white; }
.browser-introduce .download-popover::after { content: ""; position: absolute; left: 0; right: 0; top: -14px; height: 14px; }
.browser-introduce .download-popover-heading { display: flex; justify-content: space-between; align-items: center; padding: 7px 10px 14px; border-bottom: 1px solid #edf1f7; font-size: 13px; }
.browser-introduce .current-device-summary { color: var(--intro-blue); font-size: 11px; }
.browser-introduce .os-download { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 52px; padding: 10px 12px; color: #202b3d; background: white; border: 0; border-radius: 6px; text-align: left; font-weight: 600; }
.browser-introduce .os-download:hover, .browser-introduce .os-download:focus-visible { background: #f4f9ff; }
.browser-introduce .os-download em { padding: 5px 8px; border-radius: 12px; background: #eaf5ff; color: var(--intro-blue); font-style: normal; font-weight: 400; }
.browser-introduce .os-download:disabled { opacity: .55; cursor: wait; }
.browser-introduce .android-download-wrap { position: relative; }
.browser-introduce .android-download-qr { display: none; position: absolute; left: calc(100% + 20px); bottom: 0; width: 148px; padding: 16px; border-radius: 12px; background: #fff; box-shadow: 0 8px 32px #123e6c26; text-align: center; }
.browser-introduce .android-download-qr::before { content: ""; position: absolute; top: 0; bottom: 0; left: -20px; width: 20px; }
.browser-introduce .android-download-wrap:hover .android-download-qr, .browser-introduce .android-download-wrap:focus-within .android-download-qr { display: block; }
.browser-introduce #introduce-android-qrcode { width: 116px; height: 116px; }
.browser-introduce #introduce-android-qrcode img { display: block; }
.browser-introduce .android-download-qr p { margin: 12px 0 0; color: #667085; font-size: 12px; line-height: 18px; }
@media (max-width: 600px) {
    .browser-introduce .android-download-qr { position: relative; left: auto; bottom: auto; margin: 8px auto; box-shadow: none; }
}
.browser-introduce .download-status { margin: 0 12px; font-size: 12px; color: #d74737; }
.browser-introduce .download-status:empty { display: none; }
.browser-introduce .os { display: flex; justify-content: center; align-items: center; gap: 28px; margin-top: 16px; }
.browser-introduce .os img { width: 18px; height: 18px; object-fit: contain; }
.browser-introduce .hero-pills { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 36px; }
.browser-introduce .hero-pills span { padding: 6px 14px; border-radius: 24px; border: 1px solid #d0e6ff; background: white; }
.browser-introduce .hero-pills span::before { content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: #159bff; margin-right: 10px; vertical-align: middle; }
.browser-introduce .problem-section { padding: 12px 0 76px; }
.browser-introduce .problem-stage { display: grid; grid-template-columns: 536px minmax(0, 1fr); gap: 24px; }
.browser-introduce .problem-nav { display: flex; flex-direction: column; gap: 14px; }
.browser-introduce .problem-item { display: block; width: 100%; padding: 24px 30px; text-align: left; background: linear-gradient(180deg, #f3f9ff, #fff); border: 1px solid transparent; border-radius: 8px; color: #111; }
.browser-introduce .problem-item-heading { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.browser-introduce .problem-item strong { font-size: 24px; line-height: 36px; font-weight: 600; }
.browser-introduce .problem-item small { background: linear-gradient(110deg, #def2ff, #f0e8ff); color: #326bff; padding: 3px 10px; border-radius: 3px; font-size: 16px; line-height: 24px; font-weight: 600; white-space: nowrap; }
.browser-introduce .problem-item.active { background: linear-gradient(#f3faff, #fff) padding-box, linear-gradient(180deg, #168fff, #43e4e5) border-box; border-color: transparent; box-shadow: 0 0 5px #28b6ff66; }
.browser-introduce .problem-item.active strong { color: #3260ff; background: linear-gradient(90deg, #3260ff, #38baff); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.browser-introduce .problem-detail { display: none; padding-top: 20px; }
.browser-introduce .problem-item.active .problem-detail { display: block; }
.browser-introduce .problem-detail b { display: block; color: #326bff; font-size: 18px; line-height: 24px; font-weight: 600; margin-top: 16px; }
.browser-introduce .problem-item small > span, .browser-introduce .problem-detail b { width: fit-content; background: linear-gradient(90deg, #3260ff, #38baff); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.browser-introduce .problem-detail b:first-child { margin-top: 0; }
.browser-introduce .problem-detail em { display: block; font-size: 14px; line-height: 24px; font-style: normal; white-space: pre-line; margin-top: 2px; }
.browser-introduce .problem-visual { position: relative; min-height: 536px; border-radius: 8px; overflow: hidden; background: linear-gradient(135deg, #f5faff 30%, #eaf8ff 75%, #eee9ff); }
.browser-introduce .problem-visual img { position: absolute;width: 692px;inset: 0;object-fit: contain;opacity: 0;visibility: hidden;transition: opacity .2s;top: 0;left: 0;right: 0;bottom: 0;margin: auto; }
.browser-introduce .problem-visual img.active { visibility: visible; opacity: 1; }
.browser-introduce .plans-section { padding: 0 0 80px; }
.browser-introduce .plans-section > .heading > p { color: #858586; }
.browser-introduce .plans-section .plan-summary-amount { color: #020202; }
.browser-introduce .plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.browser-introduce .plan-card { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; border-radius: 10px; background: linear-gradient(#f4fafc 0, #f7fbfc 44%, #fff 44%); padding: 30px 16px 18px; box-shadow: 0 3px 14px #cfdce655; }
.browser-introduce .plan-ribbon { position: absolute; right: 0; top: 0; padding: 4px 14px 4px 25px; clip-path: polygon(0 0, 100% 0, 100% 100%, 13% 100%); border-radius: 0 10px 0 0; color: white; background: #ff791b; font-size: 14px; font-style: normal; }
.browser-introduce .plan-card-1 .plan-ribbon, .browser-introduce .plan-card-2 .plan-ribbon, .browser-introduce .plan-card-3 .plan-ribbon { background: linear-gradient(90deg, #ff7418, #f72e88); }
.browser-introduce .plat { display: flex; align-items: center; justify-content: center; width: 100%; height: 74px; margin-bottom: 10px; }
.browser-introduce .plat > img { width: 74px; height: 74px; object-fit: contain; border-radius: 12px; }
.browser-introduce .plat.p3 { gap: 10px; height: 34px; margin-bottom: 16px; }
.browser-introduce .plat.p3 img { width: 34px; height: 34px; border-radius: 6px; }
.browser-introduce .plan-card h3 { font-size: 22px; color: #080808; font-weight: 600; }
.browser-introduce .plan-desc { min-height: 44px; margin-top: 6px; color: #777; font-size: 14px; line-height: 1.5; }
.browser-introduce .plan-card-3 .plan-desc { min-height: 78px; }
.browser-introduce .plan-price-card { width: 100%; padding: 14px 6px; background: linear-gradient(#fcf6ec, #fef4e4); border: 1px solid #fff; border-radius: 20px; box-shadow: 0 3px 4px #efc88822; }
.browser-introduce .plan-offer-tag { display: inline-block; position: relative; background: #ed9000; color: #fff; padding: 6px 12px; font-size: 14px; }
.browser-introduce .plan-offer-tag::before, .browser-introduce .plan-offer-tag::after { content: ""; position: absolute; top: calc(50% - 4px); width: 8px; height: 8px; border-radius: 50%; background: #fcf6ec; }
.browser-introduce .plan-offer-tag::before { left: -4px; }
.browser-introduce .plan-offer-tag::after { right: -4px; }
.browser-introduce .price { display: flex; justify-content: center; align-items: baseline; gap: 6px; margin-top: 6px; color: #D93026FF; }
.browser-introduce .price small { font-size: 16px; color: #111; }
.browser-introduce .price .price-currency { color: #D93026FF; font-weight: 600; }
.browser-introduce .price b { font-size: 48px; font-weight: 600; line-height: 1.2; }
.browser-introduce .price > span { color: #111; font-size: 16px; }
.browser-introduce .plan-daily { margin-top: 4px; color: #858586FF; }
.browser-introduce .plan-features { width: 100%; list-style: none; padding: 0; margin: 24px 0 22px; text-align: left; color: #515151FF; }
.browser-introduce .plan-features li { display: flex; gap: 10px; margin-bottom: 10px; font-size: 14px; }
.browser-introduce .plan-features em { font-style: normal; }
.browser-introduce .plan-check { flex: 0 0 16px; width: 20px; height: 20px; background: url("../image/introduce_v2/plan-feature-check.png") center / 30px 30px no-repeat; }
.browser-introduce .plan-buy { display: flex; width: 100%; height: 40px; align-items: center; justify-content: center; margin-top: auto; color: white; background: var(--intro-blue); }
.browser-introduce .perks-bg { padding: 80px 0; position: relative; isolation: isolate; overflow: hidden; background: linear-gradient(#f6faff, #e8f4ff); }
.browser-introduce .perks-bg > .heading > p { color: #858586; }
/* UI 稿的波谷位于中部偏左，右侧向上延伸，不使用居中的椭圆背景。 */
.browser-introduce .perks-bg::before { content: ""; position: absolute; z-index: -1; inset: 0; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1920 568' preserveAspectRatio='none'%3E%3Cpath fill='%23e7f3ff' d='M0 285 C270 190 470 190 650 330 S930 480 1160 335 S1670 -15 1920 38 V568 H0Z'/%3E%3C/svg%3E") center / max(1920px, 100%) 100% no-repeat; }
.browser-introduce .perks { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.browser-introduce .perk-card { display: flex; flex-direction: column; min-height: 272px; padding: 24px 14px 26px; background: #fff; border-radius: 6px; color: #222; }
.browser-introduce .perk-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; height: 26px; flex-shrink: 0; margin-bottom: 20px; }
.browser-introduce .perk-tag { padding: 3px 8px; border-radius: 3px; color: #008bff; background: #eef8ff; font-size: 14px; line-height: 20px; white-space: nowrap; }
.browser-introduce .perk-icon { width: 24px; height: 24px; object-fit: contain; }
.browser-introduce .perk-card h3 { font-size: 18px; font-weight: 700; line-height: 28px; }
.browser-introduce .perk-card p { font-size: 14px; color: #666; line-height: 20px; margin: 12px 0 24px; white-space: pre-line; }
/* 数字与单位共用文字基线，避免 flex 居中使单位悬在数字中部。 */
.browser-introduce .perk-card > b, .browser-introduce .perk-cta { margin-top: auto; display: flex; justify-content: center; flex-shrink: 0; height: 48px; color: #008bff; background: #eff8ff; border-radius: 3px; font-size: 18px; font-weight: 400; line-height: 48px; text-align: center; white-space: nowrap; }
.browser-introduce .perk-card > b { font-weight: 700; }
.browser-introduce .perk-card > b strong { font-size: 32px; font-weight: 700; line-height: 1;transform: translateY(5px);display: block; }
.browser-introduce .welcome-perk { padding: 20px 16px 26px; background: url("../image/introduce_v2/2743e8d4aa90.png") right top / 202px 247px no-repeat, linear-gradient(#d7edff, #fff 65%); box-shadow: inset 0 4px #168fff, inset 0 0 0 1px #35bffa; border-radius: 9px; }
.browser-introduce .welcome-perk .perk-top { margin-bottom: 22px; }
.browser-introduce .welcome-perk .perk-tag { padding: 3px 12px; color: #fff; background: #168fff; }
.browser-introduce .welcome-perk p strong { color: #ff251c; font-weight: 700; }
.browser-introduce .perk-card:nth-child(3) .perk-tag { color: #ed9234; background: #fff2e6; }
.browser-introduce .perk-card:nth-child(4) .perk-tag { color: #9e85eb; background: #f0ecff; }
.browser-introduce .perk-card:nth-child(5) .perk-tag { color: #1765a8; background: #e6f5ff; }
.browser-introduce .perk-card:nth-child(6) .perk-tag { color: #ef3833; background: #ffeded; }
.browser-introduce .perk-cta { background: linear-gradient(90deg, #008bff, #26cdd2); color: #fff; font-size: 16px; }
.browser-introduce .perk-card:nth-child(3) > b { color: #ef2b20; background: #fff0e5; }
.browser-introduce .perk-card:nth-child(6) > b { color: #ef2b20; background: #ffecec; }
.browser-introduce .environment-section { padding: 80px 0; }
.browser-introduce .environment-stats { display: grid; grid-template-columns: repeat(4, 1fr); padding: 34px 60px; background: linear-gradient(#d8efff, #eaf8ff); border-radius: 8px; margin-bottom: 20px; }
.browser-introduce .environment-stat { display: flex; align-items: center; gap: 24px; }
.browser-introduce .environment-stat-icon { width: 54px; height: 54px; object-fit: contain; }
.browser-introduce .environment-stat b { display: block; font-size: 40px; font-weight: 600; color: #111; line-height: 1.2; }
.browser-introduce .environment-stat small { font-size: 16px; color: #66737f; }
.browser-introduce .environment-showcase { padding: 24px; border-radius: 8px; background: radial-gradient(ellipse at 55% 0, #9ee7ff 0, transparent 58%), linear-gradient(#248cff, #f1f6ff 85%); }
.browser-introduce .environment-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.browser-introduce .environment-card { position: relative; min-height: 175px; padding: 20px 24px; background: linear-gradient(120deg, #fff, #eff7ff); border: 2px solid #ffffffaa; overflow: hidden; border-radius: 10px; }
.browser-introduce .environment-card > img { position: absolute; right: 0; bottom: 0; width: 100%; height: 100%; object-fit: cover; object-position: right bottom; }
.browser-introduce .environment-card-copy { position: relative; }
.browser-introduce .environment-card h3 { font-size: 20px; font-weight: 600; color: #1698ff; }
.browser-introduce .environment-card p { font-size: 14px; color: #77818c; margin: 8px 0; }
.browser-introduce .environment-tags { display: flex; flex-wrap: wrap; gap: 6px; max-width: 100%; }
.browser-introduce .environment-tags span { padding: 2px 9px; background: #ffffffdd; border: 1px solid #cde6ff; border-radius: 20px; font-size: 14px; }
.browser-introduce .environment-map { background: #eef7ffdd; border: 2px solid #ffffffcc; border-radius: 10px; margin-top: 24px; padding: 20px 22px; }
.browser-introduce .environment-map h3 { margin-bottom: 12px; color: #269cf8; font-size: 18px; font-weight: 600; }
.browser-introduce .environment-map > img { display: block; width: 100%; max-height: 520px; object-fit: contain; background: #fff; border-radius: 8px; }
.browser-introduce .core-free { padding: 80px 0; background: #f6fbff; overflow: hidden; text-align: center; }
.browser-introduce .cards-viewport { overflow: hidden; width: 100%; mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent); }
.browser-introduce .cards-track { display: flex; width: max-content; animation: introduce-marquee 70s linear infinite; }
.browser-introduce .cards-set { display: flex; align-items: center; gap: 22px; padding-right: 22px; flex-shrink: 0; }
.browser-introduce .card-column { display: flex; flex-direction: column; gap: 20px; }
.browser-introduce .feature-card { position: relative; overflow: hidden; width: 258px; padding: 24px 14px 0; border-radius: 14px; background: linear-gradient(#c3ddff, #eaf4ff); }
.browser-introduce .feature-card.large { height: 290px; }
.browser-introduce .feature-card.small { height: 218px; }
.browser-introduce .feature-card.hero { height: 430px; margin: 0; }
.browser-introduce .feature-card.lavender { background: linear-gradient(#cad3ff, #eef0ff); }
.browser-introduce .feature-card.purple { background: linear-gradient(#c3b6ff, #efebff); }
.browser-introduce .feature-card.mint { background: linear-gradient(#b8f7ee, #effffb); }
.browser-introduce .feature-card h3 { font-size: 20px; font-weight: 600; position: relative; z-index: 1; }
.browser-introduce .feature-card p { color: #697383; font-size: 13px; margin-top: 8px; position: relative; z-index: 1; }
.browser-introduce .feature-card img { position: absolute; width: 100%; height: auto; left: 0; bottom: 0; }
.browser-introduce .cards-viewport:hover .cards-track, .browser-introduce .cards-viewport:focus-within .cards-track { animation-play-state: paused; }
.browser-introduce .all-features { display: inline-flex; justify-content: center; align-items: center; gap: 8px; margin-top: 38px; border-radius: 30px; background: #2c87ff; color: white; width: 234px; height: 60px; padding: 12px 40px; font-size: 18px; box-shadow: 0 3px 5px #1c72db55; }
.browser-introduce .quick-start { padding: 80px 0; }
.browser-introduce .quick-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.browser-introduce .quick-step { position: relative; min-width: 0; min-height: 306px; padding: 32px 40px; overflow: hidden; background: #fff; border-radius: 16px; box-shadow: 0 8px 30px #152d4909; }
.browser-introduce .quick-step h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.browser-introduce .quick-step p { font-size: 14px; color: #4A5565; }
.browser-introduce .quick-step > img { width: 100%; height: auto; aspect-ratio: 648 / 320; object-fit: contain; object-position: left bottom; margin-top: 24px; }
.browser-introduce .quick-coupon { height: 146px; }
.browser-introduce .quick-step p a { color: #155DFC; font-weight: 600;font-size: 14px; }
.browser-introduce .quick-step p strong { color: #FB2C36; font-weight: 600;font-size: 14px; }
.browser-introduce .quick-register { position: absolute; bottom: 32px; left: 40px; box-shadow: 0 3px 5px #1c72db55; background: #2c87ff; color: white; border-radius: 24px; padding: 10px 22px; white-space: nowrap; }
.browser-introduce .coupon-cards { position: absolute; width: 160px; height: 165px; right: 20px; bottom: -22px; transform: rotate(-3deg); }
.browser-introduce .coupon-cards i { position: absolute; display: block; width: 96px; height: 142px; padding-top: 34px; border: 2px solid #ffffff66; border-radius: 10px; text-align: center; color: #fff; font-size: 13px; font-style: normal; box-shadow: 0 12px 25px #ca773638; }
.browser-introduce .coupon-cards i:first-child { z-index: 1; left: 0; top: 18px; background: linear-gradient(145deg, #ffc681, #ffd32e); transform: rotate(-4deg); }
.browser-introduce .coupon-cards i + i { right: 0; top: 0; background: linear-gradient(145deg, #ff7480, #ff7516); transform: rotate(14deg); }
.browser-introduce .coupon-cards strong { display: block; margin-top: 6px; font-size: 32px; line-height: 1.3; font-weight: 700; color: #fff; white-space: nowrap; }
@keyframes introduce-marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
    .browser-introduce .cards-track { animation: none; }
    .browser-introduce .cards-viewport { overflow-x: auto; }
    .browser-introduce .cards-set[aria-hidden="true"] { display: none; }
    .browser-introduce .problem-visual img { transition: none; }
}
@media (max-width: 1200px) {
    .browser-introduce > .hero h2 { font-size: 32px; }
    .browser-introduce .quick-step { padding: 28px 24px; }
    .browser-introduce .quick-register { left: 24px; }
    .browser-introduce .problem-stage { grid-template-columns: 43% minmax(0, 1fr); }
    .browser-introduce .problem-item { padding: 22px; }
    .browser-introduce .problem-item strong { font-size: 19px; }
    .browser-introduce .plan-card { padding-left: 12px; padding-right: 12px; }
    .browser-introduce .plan-card h3 { font-size: 19px; }
    .browser-introduce .plan-desc { font-size: 12px; }
    .browser-introduce .plan-offer-tag { font-size: 12px; }
    .browser-introduce .perks { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
    .browser-introduce .environment-stats { padding: 24px; }
    .browser-introduce .environment-stat { gap: 12px; }
    .browser-introduce .environment-stat b { font-size: 30px; }
}
@media (max-width: 800px) {
    .browser-introduce > .hero { padding-top: 42px; }
    .browser-introduce .hero h1 { font-size: 38px; }
    .browser-introduce > .hero h2 { white-space: normal; font-size: 28px; }
    .browser-introduce .heading h2 { font-size: 26px; }
    .browser-introduce .hero-pills { gap: 10px; }
    .browser-introduce .problem-stage { grid-template-columns: 1fr; }
    .browser-introduce .problem-visual { min-height: 440px; }
    .browser-introduce .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .browser-introduce .environment-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .browser-introduce .environment-cards, .browser-introduce .quick-steps { grid-template-columns: 1fr; }
    .browser-introduce .environment-card { min-height: 160px; }
    .browser-introduce .quick-step > img { height: 240px; }
    .browser-introduce .quick-coupon { justify-content: flex-start; gap: 50px; }
}
@media (max-width: 480px) {
    .browser-introduce .hero-inner, .browser-introduce .problem-stage, .browser-introduce .plans, .browser-introduce .perks, .browser-introduce .environment-inner, .browser-introduce .quick-steps { width: calc(100% - 32px); }
    .browser-introduce .heading { margin-bottom: 32px; }
    .browser-introduce .actions { gap: 12px; }
    .browser-introduce .hero-download, .browser-introduce .hero-register { width: 140px; }
    .browser-introduce .download-popover { left: 0; transform: none; width: min(334px, calc(100vw - 32px)); }
    .browser-introduce .download-popover::before { left: 64px; }
    .browser-introduce .platform-ticker-item { font-size: 12px; padding: 3px 12px; }
    .browser-introduce .problem-visual { min-height: 300px; }
    .browser-introduce .plans, .browser-introduce .perks { grid-template-columns: 1fr; }
    .browser-introduce .plan-desc { min-height: 50px; }
    .browser-introduce .environment-stat-icon { width: 40px; height: 40px; }
    .browser-introduce .environment-stat b { font-size: 24px; }
    .browser-introduce .environment-stats { padding: 20px 12px; }
}
.browser-introduce .img_e2 {
    bottom: -13px !important;
}