:root {
  --ink: #172019;
  --muted: #69726b;
  --line: #dce3dd;
  --soft: #f3f6f2;
  --green: #1e9b5d;
  --green-dark: #117746;
  --green-light: #eaf8f0;
  --purple: #7957d8;
  --purple-dark: #5f3fbd;
  --purple-light: #f0ecff;
  --white: #ffffff;
  font-family: Pretendard, "Apple SD Gothic Neo", "Segoe UI", sans-serif;
  color: var(--ink);
  background: #fbfcfa;
  font-synthesis: none;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: radial-gradient(circle at 50% 17%, #f4faf5 0, #fbfcfa 36%, #fbfcfa 100%); transition: background .3s ease; }
button, input { font: inherit; }
button { color: inherit; }
.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; }
.page-shell { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.site-header { height: 84px; display: flex; align-items: center; justify-content: flex-start; border-bottom: 1px solid #edf0ed; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 20px; font-weight: 700; line-height: 1; letter-spacing: -.4px; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: var(--green); border: 1px solid #cfe9da; border-radius: 10px; background: var(--green-light); }
.brand-mark svg { width: 22px; }
.privacy-badge { display: flex; align-items: center; gap: 7px; margin-left: 16px; padding: 8px 12px; border: 1px solid #dfe9e1; border-radius: 999px; background: rgba(255,255,255,.72); color: #476150; font-size: 12px; font-weight: 600; white-space: nowrap; }
.privacy-badge svg { width: 16px; }
.header-nav { display: flex; align-items: center; gap: 22px; margin-left: auto; padding-left: 28px; }
.header-nav a, footer a { color: #68716a; font-size: 12px; font-weight: 600; text-decoration: none; }
.header-nav a:hover, footer a:hover { color: var(--green-dark); }
.language-control { position: relative; display: flex; align-items: center; gap: 6px; min-height: 34px; padding: 0 9px; border: 1px solid #dfe6e0; border-radius: 9px; background: rgba(255,255,255,.78); color: #5f6961; }
.language-control svg { flex: 0 0 auto; width: 15px; }
.language-control select { max-width: 92px; padding: 0 16px 0 0; border: 0; outline: 0; background: transparent; color: inherit; font-size: 11px; font-weight: 700; cursor: pointer; }
.converter-theme .language-control { border-color: #dfd7f4; color: #675981; }
.site-menu { position: relative; flex: 0 0 auto; margin-left: 14px; }
.menu-toggle { display: grid; place-items: center; width: 38px; height: 38px; padding: 0; border: 1px solid #dfe6e0; border-radius: 10px; background: rgba(255,255,255,.82); cursor: pointer; transition: border-color .2s, background .2s; }
.menu-toggle:hover, .site-menu.open .menu-toggle { border-color: #cfe0d3; background: var(--green-light); }
.menu-toggle-lines { position: relative; display: block; width: 17px; height: 13px; }
.menu-toggle-lines i { position: absolute; left: 0; width: 17px; height: 1.5px; border-radius: 999px; background: currentColor; transition: top .2s ease, transform .2s ease, opacity .2s ease; }
.menu-toggle-lines i:nth-child(1) { top: 0; }
.menu-toggle-lines i:nth-child(2) { top: 5.5px; }
.menu-toggle-lines i:nth-child(3) { top: 11px; }
.site-menu.open .menu-toggle-lines i:nth-child(1) { top: 5.5px; transform: rotate(45deg); }
.site-menu.open .menu-toggle-lines i:nth-child(2) { opacity: 0; }
.site-menu.open .menu-toggle-lines i:nth-child(3) { top: 5.5px; transform: rotate(-45deg); }
.site-menu-panel { position: absolute; z-index: 30; top: calc(100% + 10px); right: 0; width: 230px; padding: 9px; border: 1px solid #dfe6e0; border-radius: 15px; background: rgba(255,255,255,.98); box-shadow: 0 18px 45px rgba(31,61,40,.13), 0 2px 8px rgba(31,61,40,.05); }
.site-menu-panel > p { margin: 3px 8px 8px; color: #9aa19b; font-size: 9px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; }
.site-menu-panel a { display: flex; align-items: center; gap: 11px; padding: 11px; border-radius: 10px; color: #566159; font-size: 12px; font-weight: 700; text-decoration: none; }
.site-menu-panel a:hover, .site-menu-panel a[aria-current="page"] { background: var(--green-light); color: var(--green-dark); }
.menu-link-icon { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--soft); color: var(--green); }
.menu-link-icon svg { width: 17px; }
.converter-theme .menu-toggle { border-color: #dfd7f4; }
.converter-theme .menu-toggle:hover, .converter-theme .site-menu.open .menu-toggle { border-color: #d5c9f2; background: var(--purple-light); }
.converter-theme .site-menu-panel { border-color: #e1daf4; box-shadow: 0 18px 45px rgba(86,55,156,.14), 0 2px 8px rgba(86,55,156,.05); }
.converter-theme .site-menu-panel a:hover, .converter-theme .site-menu-panel a[aria-current="page"] { background: var(--purple-light); color: var(--purple-dark); }
.converter-theme .menu-link-icon { color: var(--purple); }

.hero { padding: 68px 20px 42px; text-align: center; }
.eyebrow, .section-kicker { margin: 0 0 15px; color: var(--green); font-size: 11px; font-weight: 700; line-height: 1.2; letter-spacing: 2px; }
.hero h1 { max-width: 680px; margin: 0 auto; font-size: clamp(38px, 5vw, 58px); line-height: 1.2; letter-spacing: -3px; }
.hero h1 span { color: var(--green); }
.hero-copy { margin: 22px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8; }

.compressor-card { max-width: 820px; margin: 0 auto; padding: 10px; border: 1px solid #e0e6e1; border-radius: 24px; background: rgba(255,255,255,.94); box-shadow: 0 20px 55px rgba(31, 61, 40, .08), 0 2px 8px rgba(31, 61, 40, .04); }
.tool-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; padding: 5px; border-radius: 15px; background: #f3f5f2; }
.tool-tab { display: flex; align-items: center; justify-content: center; gap: 11px; min-height: 64px; padding: 10px 16px; border: 1px solid transparent; border-radius: 11px; background: transparent; color: #7e8680; text-align: left; cursor: pointer; }
.tool-tab.active { border-color: #d8e8dc; background: #fff; color: var(--green-dark); box-shadow: 0 3px 12px rgba(31,61,40,.06); }
.tool-tab[data-mode="convert"].active { border-color: #ded5f7; color: var(--purple-dark); box-shadow: 0 3px 12px rgba(77,45,155,.08); }
.tool-tab-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--green-light); }
.tool-tab[data-mode="convert"] .tool-tab-icon { background: var(--purple-light); }
.tool-tab-icon svg { width: 19px; }
.tool-tab strong, .tool-tab small { display: block; }
.tool-tab strong { font-size: 13px; }
.tool-tab small { margin-top: 3px; color: #9aa19b; font-size: 9px; font-weight: 500; }
.tool-tab:disabled, .format-option:disabled { cursor: wait; opacity: .65; }
.drop-zone { width: 100%; min-height: 286px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 38px; border: 1.5px dashed #b9d5c3; border-radius: 17px; background: #fbfdfb; cursor: pointer; transition: border-color .2s, background .2s, transform .2s; }
.drop-zone:hover, .drop-zone.dragging { border-color: var(--green); background: #f5fbf7; }
.drop-zone.dragging { transform: scale(.995); }
.upload-icon { display: grid; place-items: center; width: 58px; height: 58px; margin-bottom: 20px; border-radius: 18px; color: var(--green); background: var(--green-light); }
.upload-icon svg { width: 27px; }
.drop-title { font-size: 18px; font-weight: 700; letter-spacing: -.3px; }
.drop-subtitle { margin-top: 8px; color: var(--green-dark); font-size: 13px; font-weight: 600; }
.file-types { margin-top: 23px; color: #9aa29c; font-size: 11px; letter-spacing: .3px; }

.workspace { padding: 25px 25px 20px; }
.workspace-top, .action-row { display: flex; align-items: center; justify-content: space-between; }
.workspace h2 { margin: 0; font-size: 21px; letter-spacing: -.7px; }
.section-kicker { margin-bottom: 7px; font-size: 9px; }
.text-button { display: inline-flex; align-items: center; gap: 4px; padding: 8px 10px; border: 0; background: transparent; color: var(--green-dark); font-size: 13px; font-weight: 600; cursor: pointer; }
.text-button svg { width: 17px; }
.settings-bar { display: flex; align-items: center; justify-content: space-between; margin: 22px 0 12px; padding: 15px 17px; border-radius: 12px; background: var(--soft); }
.setting-copy { display: flex; flex-direction: column; gap: 3px; }
.setting-label { font-size: 13px; font-weight: 700; }
.setting-help { color: #929a94; font-size: 10px; }
.quality-control { display: flex; align-items: center; gap: 12px; }
.quality-control input { width: 150px; accent-color: var(--green); cursor: pointer; }
.quality-control output { min-width: 42px; color: var(--green-dark); font-size: 13px; font-weight: 700; line-height: 1; }
.file-list { display: grid; gap: 9px; max-height: 310px; margin: 0; padding: 0; overflow: auto; list-style: none; }
.file-item { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; align-items: center; gap: 13px; padding: 10px; border: 1px solid #e8ece8; border-radius: 13px; }
.thumb { width: 52px; height: 52px; display: block; object-fit: cover; border-radius: 9px; background: var(--soft); }
.file-meta { min-width: 0; }
.file-name { display: block; overflow: hidden; color: #29342c; font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.file-detail { display: block; margin-top: 5px; color: #929a94; font-size: 10px; }
.file-result { color: var(--green-dark); font-size: 11px; font-weight: 700; }
.remove-file { display: grid; place-items: center; width: 32px; height: 32px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: #939b95; cursor: pointer; }
.remove-file:hover { color: #d04e4e; background: #fff3f3; }
.remove-file svg { width: 17px; }
.action-row { margin-top: 18px; padding-top: 18px; border-top: 1px solid #edf0ed; }
.ghost-button, .primary-button { min-height: 44px; border-radius: 11px; font-size: 13px; font-weight: 700; cursor: pointer; }
.ghost-button { padding: 0 16px; border: 1px solid #dfe5e0; background: var(--white); }
.primary-button { display: flex; align-items: center; justify-content: center; gap: 8px; min-width: 180px; padding: 0 18px; border: 0; background: var(--green); color: white; box-shadow: 0 7px 16px rgba(30,155,93,.2); }
.primary-button:hover { background: var(--green-dark); }
.primary-button:disabled { cursor: wait; opacity: .65; }
.primary-button svg { width: 17px; }
.converter-settings { background: #f6f3ff; }
.format-options { display: flex; gap: 5px; }
.format-option { min-width: 57px; height: 34px; padding: 0 11px; border: 1px solid #ddd5f3; border-radius: 8px; background: #fff; color: #776e8f; font-size: 11px; font-weight: 700; cursor: pointer; }
.format-option.active { border-color: var(--purple); background: var(--purple); color: #fff; box-shadow: 0 4px 10px rgba(121,87,216,.2); }
.compressor-card.converter-mode { border-color: #e2daf6; box-shadow: 0 20px 55px rgba(86,55,156,.09), 0 2px 8px rgba(86,55,156,.04); }
.converter-mode .drop-zone { border-color: #cfc2ee; background: #fcfbff; }
.converter-mode .drop-zone:hover, .converter-mode .drop-zone.dragging { border-color: var(--purple); background: #f8f5ff; }
.converter-mode .upload-icon { color: var(--purple); background: var(--purple-light); }
.converter-mode .drop-subtitle, .converter-mode .section-kicker, .converter-mode .file-result { color: var(--purple-dark); }
.converter-mode .primary-button { background: var(--purple); box-shadow: 0 7px 16px rgba(121,87,216,.22); }
.converter-mode .primary-button:hover { background: var(--purple-dark); }
body.converter-theme { background: radial-gradient(circle at 50% 17%, #f6f2ff 0, #fcfbff 38%, #fbfcfa 100%); }
.converter-theme .brand-mark { border-color: #ddd3f7; background: var(--purple-light); color: var(--purple); }
.converter-theme .privacy-badge { border-color: #e1daf4; color: #675981; }
.converter-theme .header-nav a:hover,
.converter-theme footer a:hover { color: var(--purple-dark); }
.converter-theme .hero .eyebrow,
.converter-theme .hero h1 span,
.converter-theme .section-kicker,
.converter-theme .content-intro .eyebrow { color: var(--purple); }
.converter-theme .text-button { color: var(--purple-dark); }
.converter-theme .feature-icon { background: var(--purple-light); color: var(--purple); }
.converter-theme .steps li > span { color: var(--purple); }
.converter-theme .format-grid article { background: linear-gradient(145deg, #fff, #fbf9ff); }
.converter-theme .format-grid strong { background: var(--purple-light); color: var(--purple-dark); }
.converter-theme .faq-list summary::after { color: var(--purple); }
.brand-mark, .privacy-badge, .hero .eyebrow, .hero h1 span, .section-kicker,
.feature-icon, .steps li > span, .format-grid strong { transition: color .25s ease, background .25s ease, border-color .25s ease; }

.features { max-width: 880px; margin: 50px auto 72px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.features article { display: flex; align-items: flex-start; gap: 13px; }
.feature-icon { flex: 0 0 auto; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; color: var(--green); background: var(--green-light); }
.feature-icon svg { width: 20px; }
.features h3 { margin: 1px 0 5px; font-size: 13px; }
.features p { margin: 0; color: #879088; font-size: 10px; line-height: 1.6; }
.seo-content { max-width: 940px; margin: 0 auto 90px; }
.content-intro { display: grid; grid-template-columns: .75fr 1.25fr; column-gap: 80px; padding: 80px 0; border-top: 1px solid #e8ece8; }
.content-intro .eyebrow { grid-column: 1 / -1; margin-bottom: 20px; }
.content-intro h2, .section-heading h2 { margin: 0; font-size: 31px; line-height: 1.35; letter-spacing: -1.4px; }
.content-intro > p:last-child { margin: 4px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.guide-section { padding: 72px 0; border-top: 1px solid #e8ece8; scroll-margin-top: 28px; }
.section-heading { max-width: 620px; margin-bottom: 34px; }
.section-heading .section-kicker { margin-bottom: 11px; }
.section-heading > p:last-child { margin: 10px 0 0; color: var(--muted); font-size: 13px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin: 0; padding: 0; list-style: none; }
.steps li, .format-grid article { padding: 25px; border: 1px solid #e2e8e3; border-radius: 16px; background: #fff; }
.steps li > span { display: block; margin-bottom: 34px; color: var(--green); font-size: 11px; font-weight: 700; letter-spacing: 1px; }
.steps h3, .format-grid h3 { margin: 0 0 9px; font-size: 15px; letter-spacing: -.3px; }
.steps p, .format-grid p { margin: 0; color: #7b847d; font-size: 12px; line-height: 1.75; }
.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.format-grid article { background: linear-gradient(145deg, #fff, #f9fcf9); }
.format-grid strong { display: inline-flex; align-items: center; justify-content: center; min-width: 48px; height: 28px; margin-bottom: 26px; border-radius: 7px; background: var(--green-light); color: var(--green-dark); font-size: 11px; letter-spacing: .5px; }
.faq-section { padding-bottom: 0; }
.faq-list { border-top: 1px solid #dfe5e0; }
.faq-list details { border-bottom: 1px solid #dfe5e0; }
.faq-list summary { position: relative; padding: 22px 42px 22px 2px; font-size: 14px; font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 5px; top: 17px; color: var(--green); font-size: 23px; font-weight: 400; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { max-width: 760px; margin: -4px 0 22px 2px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.site-footer { display: grid; grid-template-columns: 1.25fr .75fr 1fr; column-gap: 70px; row-gap: 42px; align-items: start; padding: 48px 0 28px; border-top: 1px solid #e6ebe7; color: #8e9790; }
.site-footer p { margin: 0; }
.footer-brand a { color: #172019; font-size: 21px; font-weight: 800; letter-spacing: -.8px; }
.footer-group > p { margin-bottom: 15px; color: #374139; font-size: 11px; font-weight: 700; }
.footer-group nav { display: grid; gap: 10px; }
.footer-group a { width: fit-content; color: #8a938c; font-size: 11px; font-weight: 500; }
.footer-copyright { grid-column: 1 / -1; padding-top: 23px; border-top: 1px solid #edf0ed; font-size: 10px; }
.toast { position: fixed; right: 22px; bottom: 22px; max-width: min(360px, calc(100% - 44px)); padding: 12px 16px; border-radius: 11px; background: #172019; color: #fff; font-size: 12px; opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity .2s, transform .2s; box-shadow: 0 10px 30px rgba(0,0,0,.15); }
.toast.show { opacity: 1; transform: translateY(0); }

.about-main { max-width: 940px; margin: 0 auto 90px; }
.about-hero { max-width: 760px; margin: 0 auto; padding: 82px 20px 70px; text-align: center; }
.about-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.2; letter-spacing: -3px; }
.about-hero h1 span { color: var(--green); }
.about-hero > p:last-child { max-width: 660px; margin: 22px auto 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.about-story { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; padding: 70px; border: 1px solid #e0e6e1; border-radius: 24px; background: rgba(255,255,255,.94); box-shadow: 0 20px 55px rgba(31,61,40,.07), 0 2px 8px rgba(31,61,40,.04); }
.about-story h2, .about-purpose h2 { margin: 0; font-size: 31px; line-height: 1.35; letter-spacing: -1.4px; }
.about-story-copy { display: grid; gap: 20px; align-content: start; }
.about-story-copy p, .about-purpose-copy > p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin: 18px 0 72px; }
.about-values article { padding: 27px; border: 1px solid #e2e8e3; border-radius: 16px; background: linear-gradient(145deg, #fff, #f9fcf9); }
.about-value-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 28px; border-radius: 12px; background: var(--green-light); color: var(--green); }
.about-value-icon svg { width: 21px; }
.about-values h3 { margin: 0 0 9px; font-size: 15px; letter-spacing: -.3px; }
.about-values p { margin: 0; color: #7b847d; font-size: 12px; line-height: 1.75; }
.about-purpose { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; padding: 72px 0 0; border-top: 1px solid #e8ece8; }
.about-purpose-copy { display: grid; justify-items: start; gap: 28px; }
.about-cta { width: fit-content; min-width: 206px; text-decoration: none; }

.contact-main { max-width: 940px; margin: 0 auto 90px; }
.contact-hero { max-width: 760px; margin: 0 auto; padding: 82px 20px 60px; text-align: center; }
.contact-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.2; letter-spacing: -3px; }
.contact-hero h1 span { color: var(--green); }
.contact-hero > p:last-child { max-width: 650px; margin: 22px auto 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.contact-types { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-bottom: 18px; }
.contact-types article { padding: 27px; border: 1px solid #e2e8e3; border-radius: 16px; background: linear-gradient(145deg, #fff, #f9fcf9); }
.contact-type-number { display: block; margin-bottom: 34px; color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.contact-types h2 { margin: 0 0 9px; font-size: 15px; letter-spacing: -.3px; }
.contact-types p { margin: 0; color: #7b847d; font-size: 12px; line-height: 1.75; }
.contact-channel { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; padding: 60px 70px; border: 1px solid #e0e6e1; border-radius: 24px; background: rgba(255,255,255,.94); box-shadow: 0 20px 55px rgba(31,61,40,.07), 0 2px 8px rgba(31,61,40,.04); }
.contact-channel h2, .contact-tips h2 { margin: 0; font-size: 31px; line-height: 1.35; letter-spacing: -1.4px; }
.contact-channel-copy > p:last-child { margin: 18px 0 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.contact-email-card { min-width: 0; padding: 30px; border-radius: 17px; background: var(--green-light); }
.contact-mail-icon { display: grid; place-items: center; width: 43px; height: 43px; margin-bottom: 25px; border-radius: 12px; background: #fff; color: var(--green); }
.contact-mail-icon svg { width: 21px; }
.contact-email-card > p { margin: 0 0 8px; color: #6a8372; font-size: 10px; font-weight: 700; letter-spacing: .8px; }
.contact-email-card #contact-email { display: block; overflow-wrap: anywhere; color: var(--green-dark); font-size: clamp(18px, 2.4vw, 25px); font-weight: 700; letter-spacing: -.5px; text-decoration: none; }
.contact-email-card #contact-email:hover { text-decoration: underline; }
.contact-email-card .contact-config-note { margin: 18px 0 0; color: #799083; font-size: 10px; font-weight: 500; letter-spacing: 0; line-height: 1.6; }
.contact-tips { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; padding: 72px 0 0; border-top: 1px solid #e8ece8; margin-top: 72px; }
.contact-tips ul { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; counter-reset: contact-tip; }
.contact-tips li { position: relative; padding: 17px 18px 17px 48px; border: 1px solid #e4e9e5; border-radius: 12px; background: #fff; color: #657068; font-size: 12px; line-height: 1.6; counter-increment: contact-tip; }
.contact-tips li::before { content: counter(contact-tip); position: absolute; left: 17px; top: 16px; color: var(--green); font-size: 10px; font-weight: 700; }

.privacy-main { max-width: 940px; margin: 0 auto 90px; }
.privacy-hero { max-width: 780px; margin: 0 auto; padding: 82px 20px 58px; text-align: center; }
.privacy-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.2; letter-spacing: -3px; }
.privacy-hero h1 span { color: var(--green); }
.privacy-hero > p:last-child { max-width: 680px; margin: 22px auto 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.privacy-status { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; margin-bottom: 18px; }
.privacy-status article { padding: 21px 19px; border: 1px solid #dfe7e1; border-radius: 15px; background: linear-gradient(145deg, #fff, #f7fbf8); }
.privacy-status strong, .privacy-status span { display: block; }
.privacy-status strong { color: var(--green-dark); font-size: 12px; line-height: 1.45; }
.privacy-status span { margin-top: 7px; color: #869087; font-size: 10px; line-height: 1.6; }
.privacy-document { padding: 28px 70px 60px; border: 1px solid #e0e6e1; border-radius: 24px; background: rgba(255,255,255,.96); box-shadow: 0 20px 55px rgba(31,61,40,.07), 0 2px 8px rgba(31,61,40,.04); }
.privacy-intro { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; padding: 24px 0 31px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.privacy-intro p { margin: 0; }
.privacy-intro p:first-child { max-width: 620px; }
.privacy-intro p:last-child { flex: 0 0 auto; color: #879088; }
.privacy-intro p:last-child span { margin-right: 7px; color: var(--green-dark); font-weight: 700; }
.privacy-document > section { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 20px; padding: 36px 0; border-top: 1px solid #e7ece8; }
.privacy-section-number { padding-top: 5px; color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.privacy-document h2 { margin: 0 0 17px; font-size: 20px; letter-spacing: -.6px; }
.privacy-document section p { margin: 0; color: #667169; font-size: 13px; line-height: 1.9; }
.privacy-document section p + p { margin-top: 12px; }
.privacy-document code { padding: 2px 6px; border-radius: 5px; background: #eef5f0; color: var(--green-dark); font-size: 11px; }
.privacy-contact-link { display: inline-flex; margin-top: 18px; color: var(--green-dark); font-size: 18px; font-weight: 700; text-decoration: underline; text-decoration-color: #acd3ba; text-underline-offset: 4px; overflow-wrap: anywhere; }

.terms-main { max-width: 940px; margin: 0 auto 90px; }
.terms-hero { max-width: 780px; margin: 0 auto; padding: 82px 20px 58px; text-align: center; }
.terms-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.2; letter-spacing: -3px; }
.terms-hero h1 span { color: var(--green); }
.terms-hero > p:last-child { max-width: 680px; margin: 22px auto 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.terms-document { padding: 28px 70px 60px; border: 1px solid #e0e6e1; border-radius: 24px; background: rgba(255,255,255,.96); box-shadow: 0 20px 55px rgba(31,61,40,.07), 0 2px 8px rgba(31,61,40,.04); }
.terms-intro { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; padding: 24px 0 31px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.terms-intro p { margin: 0; }
.terms-intro p:first-child { max-width: 620px; }
.terms-intro p:last-child { flex: 0 0 auto; color: #879088; }
.terms-intro p:last-child span { margin-right: 7px; color: var(--green-dark); font-weight: 700; }
.terms-document > section { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 20px; padding: 36px 0; border-top: 1px solid #e7ece8; }
.terms-section-number { padding-top: 5px; color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.terms-document h2 { margin: 0 0 17px; font-size: 20px; letter-spacing: -.6px; }
.terms-document section p { margin: 0; color: #667169; font-size: 13px; line-height: 1.9; }
.terms-contact-link { display: inline-flex; margin-top: 18px; color: var(--green-dark); font-size: 18px; font-weight: 700; text-decoration: underline; text-decoration-color: #acd3ba; text-underline-offset: 4px; overflow-wrap: anywhere; }

@media (max-width: 700px) {
  .about-main { margin-bottom: 60px; }
  .about-hero { padding: 54px 6px 46px; }
  .about-hero h1 { font-size: 38px; letter-spacing: -2.2px; }
  .about-hero > p:last-child { font-size: 14px; }
  .about-story { grid-template-columns: 1fr; gap: 26px; padding: 34px 26px; border-radius: 19px; }
  .about-story h2, .about-purpose h2 { font-size: 26px; }
  .about-story-copy { gap: 16px; }
  .about-values { grid-template-columns: 1fr; margin-bottom: 55px; }
  .about-values article { padding: 24px; }
  .about-value-icon { margin-bottom: 20px; }
  .about-purpose { grid-template-columns: 1fr; gap: 24px; padding: 55px 6px 0; }
  .contact-main { margin-bottom: 60px; }
  .contact-hero { padding: 54px 6px 46px; }
  .contact-hero h1 { font-size: 38px; letter-spacing: -2.2px; }
  .contact-hero > p:last-child { font-size: 14px; }
  .contact-types { grid-template-columns: 1fr; }
  .contact-types article { padding: 24px; }
  .contact-type-number { margin-bottom: 20px; }
  .contact-channel { grid-template-columns: 1fr; gap: 28px; padding: 34px 26px; border-radius: 19px; }
  .contact-channel h2, .contact-tips h2 { font-size: 26px; }
  .contact-email-card { padding: 25px; }
  .contact-tips { grid-template-columns: 1fr; gap: 25px; margin-top: 55px; padding: 55px 6px 0; }
  .privacy-main { margin-bottom: 60px; }
  .privacy-hero { padding: 54px 6px 46px; }
  .privacy-hero h1 { font-size: 38px; letter-spacing: -2.2px; }
  .privacy-hero > p:last-child { font-size: 14px; }
  .privacy-status { grid-template-columns: repeat(2, 1fr); }
  .privacy-document { padding: 24px 26px 36px; border-radius: 19px; }
  .privacy-intro { display: grid; gap: 15px; padding: 18px 0 26px; }
  .privacy-document > section { grid-template-columns: 29px minmax(0, 1fr); gap: 12px; padding: 30px 0; }
  .privacy-document h2 { font-size: 18px; }
  .terms-main { margin-bottom: 60px; }
  .terms-hero { padding: 54px 6px 46px; }
  .terms-hero h1 { font-size: 38px; letter-spacing: -2.2px; }
  .terms-hero > p:last-child { font-size: 14px; }
  .terms-document { padding: 24px 26px 36px; border-radius: 19px; }
  .terms-intro { display: grid; gap: 15px; padding: 18px 0 26px; }
  .terms-document > section { grid-template-columns: 29px minmax(0, 1fr); gap: 12px; padding: 30px 0; }
  .terms-document h2 { font-size: 18px; }
}

@media (max-width: 420px) {
  .about-hero h1 { font-size: 34px; }
  .about-story { padding: 28px 20px; }
  .about-cta { width: 100%; }
  .contact-hero h1 { font-size: 34px; }
  .contact-channel { padding: 28px 20px; }
  .privacy-hero h1 { font-size: 34px; }
  .privacy-status { grid-template-columns: 1fr; }
  .privacy-document { padding: 18px 20px 30px; }
  .privacy-document > section { grid-template-columns: 1fr; gap: 8px; }
  .privacy-section-number { padding-top: 0; }
  .terms-hero h1 { font-size: 34px; }
  .terms-document { padding: 18px 20px 30px; }
  .terms-document > section { grid-template-columns: 1fr; gap: 8px; }
  .terms-section-number { padding-top: 0; }
}

@media (max-width: 700px) {
  .page-shell { width: min(100% - 28px, 620px); }
  .site-header { height: auto; min-height: 70px; flex-wrap: wrap; padding: 18px 0 10px; }
  .privacy-badge { margin-left: 14px; padding: 7px 10px; font-size: 11px; }
  .privacy-badge svg { width: 15px; }
  .header-nav { order: 3; width: 100%; margin-left: 0; padding: 10px 0 0; gap: 16px; overflow-x: auto; scrollbar-width: none; }
  .header-nav::-webkit-scrollbar { display: none; }
  .header-nav a { flex: 0 0 auto; font-size: 11px; }
  .language-control { flex: 0 0 auto; min-height: 31px; margin-right: auto; }
  .site-menu { margin-left: auto; }
  .hero { padding: 48px 6px 32px; }
  .hero h1 { font-size: 38px; letter-spacing: -2.2px; }
  .hero-copy { font-size: 14px; }
  .desktop-only { display: none; }
  .compressor-card { border-radius: 19px; }
  .tool-tab { min-height: 58px; padding: 8px; }
  .drop-zone { min-height: 245px; padding: 28px 16px; }
  .drop-title { font-size: 16px; }
  .workspace { padding: 17px 10px 10px; }
  .settings-bar { align-items: flex-start; gap: 15px; }
  .quality-control { flex: 1; justify-content: flex-end; }
  .quality-control input { width: min(120px, 25vw); }
  .file-item { grid-template-columns: 48px minmax(0, 1fr) auto; gap: 10px; }
  .thumb { width: 48px; height: 48px; }
  .file-result { display: block; margin-top: 4px; }
  .primary-button { min-width: 160px; }
  .features { grid-template-columns: 1fr; margin: 38px 6px 55px; gap: 22px; }
  .seo-content { margin-bottom: 60px; }
  .content-intro { display: block; padding: 58px 6px; }
  .content-intro h2, .section-heading h2 { font-size: 26px; }
  .content-intro > p:last-child { margin-top: 20px; font-size: 13px; }
  .guide-section { padding: 55px 6px; }
  .steps, .format-grid { grid-template-columns: 1fr; }
  .steps li, .format-grid article { padding: 22px; }
  .steps li > span, .format-grid strong { margin-bottom: 18px; }
  .faq-list summary { line-height: 1.55; }
  .site-footer { grid-template-columns: 1fr 1fr; column-gap: 30px; row-gap: 34px; padding-top: 40px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-copyright { grid-column: 1 / -1; }
}

@media (max-width: 420px) {
  .brand { font-size: 18px; }
  .brand-mark { width: 32px; height: 32px; }
  .privacy-badge { margin-left: 10px; padding: 7px 8px; gap: 5px; font-size: 10px; }
  .site-menu { margin-left: 8px; }
  .menu-toggle { width: 35px; height: 35px; }
  .site-menu-panel { width: min(230px, calc(100vw - 28px)); }
  .header-nav { gap: 12px; }
  .language-control { padding: 0 7px; }
  .language-control select { max-width: 78px; font-size: 10px; }
  .hero h1 { font-size: 34px; }
  .settings-bar { display: block; }
  .quality-control { margin-top: 14px; justify-content: space-between; }
  .quality-control input { flex: 1; width: auto; }
  .converter-settings .format-options { margin-top: 14px; }
  .format-option { flex: 1; }
  .tool-tab-icon { display: none; }
  .action-row { gap: 8px; }
  .ghost-button { padding: 0 12px; }
  .primary-button { flex: 1; min-width: 0; }
  .site-footer { grid-template-columns: 1fr; row-gap: 30px; }
  .footer-brand, .footer-copyright { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}