:root {
  --cyan: #00E5FF;
  --pink: #FF2D7A;
  --ink: #0F172A;
  --pale: #F3F4F6;
  --white: #FFFFFF;
  --muted: #59677b;
  --line: #e4e9ef;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip { position: absolute; top: -100px; left: 16px; z-index: 20; padding: 10px 14px; background: white; }
.skip:focus { top: 8px; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.site-header { position: relative; z-index: 5; background: var(--white); border-bottom: 1px solid #edf0f4; }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 9px; flex: none; font-size: 23px; line-height: 1; font-weight: 800; letter-spacing: -.065em; white-space: nowrap; }
.brand img { width: 39px; height: 39px; }
.brand-io { color: var(--pink); }
.main-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.main-nav a { display: inline-flex; align-items: center; min-height: 76px; border-bottom: 3px solid transparent; color: #475569; font-size: 13px; font-weight: 700; white-space: nowrap; }
.main-nav a:hover, .main-nav a.active { color: var(--ink); }
.main-nav a.active { border-color: var(--pink); }
.lang-menu { position: relative; display: flex; align-items: center; gap: 6px; flex: none; border: 1px solid var(--line); border-radius: 12px; padding: 9px 12px; color: #354155; font-size: 12px; white-space: nowrap; }
.lang-menu details { position: relative; }
.lang-menu summary { cursor: pointer; font-weight: 700; list-style: none; }
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary::after { content: '⌄'; margin-left: 8px; }
.lang-list { position: absolute; top: 29px; right: -12px; z-index: 10; min-width: 184px; padding: 6px; display: grid; background: white; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 35px #0f172a1d; }
.lang-list a { padding: 10px 12px; border-radius: 8px; }
.lang-list a:hover, .lang-list a[aria-current] { background: #eefbfc; }
.hero { position: relative; overflow: hidden; background: radial-gradient(circle at 8% 89%, #c7f9fc 0, transparent 23%), radial-gradient(circle at 92% 21%, #ffe0ee 0, transparent 27%), linear-gradient(155deg, #fafcff, #f5f8fb 59%, #fff9fc); border-bottom: 1px solid #edf0f4; }
.hero::before { content: ''; position: absolute; left: -6%; bottom: -240px; width: 470px; height: 470px; border: 1px solid #00e5ff1f; border-radius: 48%; transform: rotate(19deg); }
.hero::after { content: ''; position: absolute; right: -7%; top: -250px; width: 520px; height: 520px; border: 1px solid #ff2d7a18; border-radius: 48%; transform: rotate(-26deg); }
.hero-inner { position: relative; z-index: 1; max-width: 960px; text-align: center; padding: 76px 0 62px; }
.eyebrow, .kicker { color: #078ca0; font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { max-width: 850px; margin: 16px auto 16px; font-size: clamp(39px, 4.5vw, 62px); line-height: 1.1; font-weight: 800; letter-spacing: -.065em; text-wrap: balance; }
.accent { color: var(--pink); }
.hero-lead { max-width: 680px; margin: 0 auto; color: #435066; font-size: 16px; line-height: 1.7; text-wrap: pretty; }
.tool-wrap { max-width: 800px; margin: 31px auto 0; }
.tool-form { width: 100%; }
.input-row { display: flex; align-items: center; gap: 9px; padding: 8px 8px 8px 18px; background: white; border: 1px solid #dce4ec; border-radius: 18px; box-shadow: 0 11px 34px #1c42601b; }
.input-row:focus-within { border-color: #43d5e6; box-shadow: 0 11px 34px #1c42601b, 0 0 0 3px #00e5ff30; }
.link-icon { flex: none; color: #526379; font-size: 22px; line-height: 1; }
.input-row input { flex: 1; min-width: 0; height: 44px; padding: 0 6px; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 14px; }
.input-row input::placeholder { color: #8593a4; }
.input-row button { min-width: 158px; height: 47px; padding: 0 22px; border: 0; border-radius: 11px; background: var(--pink); color: white; font-size: 14px; font-weight: 800; box-shadow: 0 7px 15px #ff2d7a29; }
.input-row button:hover { background: #e91f69; }
.input-row button:disabled { opacity: .6; cursor: progress; }
.usage-note { margin: 12px 0 0; color: #657285; font-size: 12px; line-height: 1.5; }
.tool-message { display: inline-block; max-width: 700px; margin: 11px auto 0; padding: 8px 13px; border-radius: 8px; background: #fff1f5; color: #8b3556; font-size: 11px; line-height: 1.5; }
.hero-tools { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 17px; max-width: 830px; margin: 37px auto 0; }
.hero-tool { display: grid; justify-items: center; gap: 9px; padding: 7px; border-radius: 14px; color: #344259; font-size: 12px; font-weight: 700; }
.hero-tool:hover, .hero-tool.current { background: #ffffffae; }
.hero-tool-icon, .tool-card-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 13px; font-size: 26px; font-weight: 700; }
.hero-tool-icon svg { width: 25px; height: 25px; }
.tool-card-icon svg { width: 21px; height: 21px; }
.icon-home { color: #00b9d2; background: #dffaff; }
.icon-mp3 { color: #ec2875; background: #ffe6f0; }
.icon-photo { color: #6844e8; background: #eee9ff; }
.icon-story { color: #f4721d; background: #fff0df; }
.icon-edit { color: #0aa8bc; background: #e1fbfd; }
.answer-section { max-width: 880px; padding: 67px 0 9px; text-align: center; }
.answer-section h2 { margin: 12px 0 14px; font-size: clamp(25px, 3vw, 34px); line-height: 1.2; letter-spacing: -.045em; }
.answer-block { margin: 0; color: #4c5a6e; font-size: 15px; line-height: 1.8; }
.section { padding-block: 78px; }
.section-muted { background: #f7f8fa; }
.section-title { max-width: 670px; margin-bottom: 31px; }
.section-title h2 { margin: 9px 0 13px; font-size: clamp(28px, 3vw, 39px); line-height: 1.18; letter-spacing: -.05em; }
.section-title p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; padding: 0; margin: 0; list-style: none; }
.steps li, .detail-card, .device-card, .issue-card { min-width: 0; padding: 23px; border: 1px solid var(--line); border-radius: 17px; background: var(--white); }
.steps li { display: flex; gap: 14px; }
.step-number { flex: none; color: #06abc2; font-size: 13px; font-weight: 800; }
.steps h3, .detail-card h3, .device-card h3, .issue-card h3 { margin: 0 0 9px; font-size: 15px; line-height: 1.4; letter-spacing: -.018em; }
.steps p, .detail-card p, .device-card p, .issue-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.steps.journey { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.steps.journey li:first-child, .steps.journey li:nth-child(2), .steps.journey li:last-child { grid-column: 1 / -1; }
.step-body { min-width: 0; width: 100%; }
.pending-tag { display: inline-block; margin: 0 0 8px; padding: 3px 7px; border-radius: 6px; background: #f0f3f7; color: #59677b; font-size: 10px; font-weight: 700; }
.guide-figure { max-width: 880px; margin: 18px 0 0; }
.guide-overline { display: flex; justify-content: space-between; align-items: center; margin-bottom: 9px; }
.guide-step-badge { display: inline-grid; place-items: center; min-width: 30px; height: 30px; border-radius: 9px; background: #dffaff; color: #078ca0; font-size: 12px; font-weight: 800; }
.guide-target { color: #c91459; font-size: 12px; font-weight: 700; }
.guide-figure img { display: block; width: 100%; max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 13px; }
.guide-figure figcaption { margin-top: 9px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.journey-pending { margin: 18px 0 0; padding: 13px 17px; border-left: 3px solid var(--cyan); background: #f6fdfe; color: #4f5d70; font-size: 13px; line-height: 1.65; }
.ad-slot { padding-block: 28px; }
.ad-slot-label { display: block; max-width: 970px; margin: 0 auto 9px; color: #64748b; font-size: 10px; font-weight: 600; letter-spacing: .08em; text-align: center; }
.ad-slot-reserve { display: grid; place-items: center; width: 100%; max-width: 970px; height: 250px; margin-inline: auto; border: 1px dashed #aeb8c6; border-radius: 8px; background: #f0f2f5; color: #657285; pointer-events: none; user-select: none; }
.ad-slot-test { padding: 10px; font-size: 12px; text-align: center; }
.device-grid, .issue-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
.device-card { border-top: 3px solid #76e8f2; }
.issue-card { border-top: 3px solid #ffa4c5; }
.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 17px; }
.notice { margin-top: 19px; padding: 15px 19px; border-left: 3px solid var(--cyan); background: #f6fdfe; color: #4f5d70; font-size: 13px; line-height: 1.6; }
.faq { max-width: 850px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-size: 15px; font-weight: 700; }
.faq p { margin: 12px 0 4px; color: var(--muted); font-size: 13px; line-height: 1.75; }
.tools-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.tool-card { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 15px; background: white; font-size: 13px; }
.tool-card:hover { border-color: #83e7ef; transform: translateY(-2px); }
.tool-card-icon { flex: none; width: 36px; height: 36px; font-size: 21px; }
.card-arrow { margin-left: auto; color: #0fa4b9; }
.result { margin-top: 19px; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: white; text-align: left; }
.result h2 { margin: 0 0 10px; font-size: 19px; }
.result-title, .result-status, .result-note { color: var(--muted); font-size: 12px; line-height: 1.6; }
.result-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.result-item { padding: 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.result-item img { width: 100%; height: 110px; object-fit: cover; border-radius: 7px; }
.result-item a, .result-item button { display: inline-block; margin-top: 8px; padding: 9px 13px; border: 0; border-radius: 7px; background: var(--pink); color: white; font-size: 12px; font-weight: 700; }
.result-editor { max-width: 300px; margin-top: 14px; }
.result-video { width: 100%; max-height: 260px; margin-bottom: 15px; border-radius: 9px; background: var(--ink); }
.result-error { color: #a3204f; }
.site-footer { padding-top: 54px; background: var(--ink); color: white; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 42px; }
.site-footer .brand { color: white; }
.footer-grid p { max-width: 300px; color: #a7b4c7; font-size: 12px; line-height: 1.7; }
.footer-grid nav, .footer-grid > div:last-child { display: flex; flex-direction: column; gap: 12px; color: #c6d0df; font-size: 12px; }
.footer-grid a:hover { text-decoration: underline; }
.footer-grid > div:last-child span { color: white; font-weight: 800; }
.footnote { margin-top: 52px; padding: 22px 0; border-top: 1px solid #ffffff1a; color: #91a0b5; font-size: 11px; }
.simple-page, .language-page { min-height: 64vh; padding-block: 92px; }
.simple-page h1, .language-page h1 { margin: 14px 0; font-size: clamp(38px, 5vw, 58px); letter-spacing: -.06em; }
.simple-lead, .language-page > p { max-width: 780px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.legal-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.legal-links a { padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.language-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 37px 0; }
.language-cards a { display: flex; flex-direction: column; gap: 15px; min-height: 145px; padding: 22px; border: 1px solid var(--line); border-radius: 16px; }
.language-cards strong { font-size: 19px; }
.language-cards span { color: var(--muted); font-size: 12px; line-height: 1.6; }
.language-cards b { align-self: flex-end; color: #00a7bd; }
.root-note { font-size: 12px !important; }
@media (max-width: 900px) {
  .header-inner { gap: 18px; }
  .main-nav { gap: 17px; }
  .main-nav a { font-size: 12px; }
  .brand { font-size: 21px; }
  .tools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .container { width: min(100% - 32px, 1120px); }
  .header-inner { flex-wrap: wrap; padding: 12px 0 0; }
  .brand img { width: 34px; height: 34px; }
  .lang-menu { margin-left: auto; }
  .main-nav { order: 3; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); width: 100%; gap: 5px; margin: 8px 0 0; }
  .main-nav a { justify-content: center; min-height: 43px; padding: 7px 2px 10px; overflow: hidden; font-size: 11px; text-align: center; white-space: normal; line-height: 1.15; }
  .hero-inner { padding: 53px 0 43px; }
  .hero h1 { font-size: clamp(37px, 7vw, 49px); }
  .hero-lead { font-size: 14px; }
  .hero-tools { display: flex; flex-wrap: wrap; justify-content: center; max-width: 500px; }
  .hero-tool { flex: 0 1 30%; }
  .ad-slot { padding-block: 22px; }
  .ad-slot-reserve { height: 250px; }
  .steps, .steps.journey, .device-grid, .issue-grid, .tools-grid, .language-cards { grid-template-columns: 1fr; }
  .section { padding-block: 61px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1/-1; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: clamp(34px, 8.6vw, 42px); }
  .tool-wrap { margin-top: 25px; }
  .input-row { display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 4px 9px; padding: 10px; border-radius: 16px; }
  .input-row input { height: 42px; font-size: 12px; }
  .input-row button { grid-column: 1/-1; width: 100%; height: 45px; }
  .hero-tools { gap: 4px; margin-top: 25px; }
  .hero-tool { padding: 7px 2px; font-size: 10px; line-height: 1.25; }
  .hero-tool-icon { width: 40px; height: 40px; border-radius: 11px; font-size: 23px; }
  .answer-section { padding: 52px 0 0; }
  .answer-block { font-size: 14px; }
  .detail-grid, .result-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:first-child { grid-column: auto; }
}