:root {
  --ink: #171918;
  --paper: #ffffff;
  --soft: #f2f4f3;
  --muted: #5b625e;
  --line: #d6dad7;
  --dark-line: #444a46;
  --max: 1240px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif; font-size: 1rem; line-height: 1.7; word-break: keep-all; overflow-wrap: break-word; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #6680e0; outline-offset: 5px; }
img { display: block; max-width: 100%; height: auto; }
h1,h2,h3,p,figure,dl { margin: 0; }
h1,h2,h3 { line-height: 1.24; letter-spacing: -.055em; }
h1 { font-size: clamp(3.25rem, 5.8vw, 5.6rem); font-weight: 800; }
h2 { font-size: clamp(2.1rem, 3.5vw, 3.5rem); font-weight: 750; }
h3 { font-size: 1.5rem; font-weight: 750; }
.shell { width: min(calc(100% - 80px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 200; background: white; color: black; padding: 12px 20px; }
.skip-link:focus { top: 14px; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 90px; display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; flex-direction: column; align-items: flex-start; font-family: "Helvetica Neue", Arial, sans-serif; font-weight: 900; font-size: 2rem; line-height: 1; letter-spacing: -.045em; flex-shrink: 0; }
.brand span { font-family: inherit; font-size: .75rem; font-weight: 500; letter-spacing: .065em; margin-top: 7px; }
.site-nav { display: flex; gap: 30px; align-items: center; margin-left: auto; }
.site-nav a { font-size: .9375rem; padding-block: 12px; font-weight: 600; }
.site-nav a:hover { text-decoration: underline; text-underline-offset: 6px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; min-height: 56px; padding: 14px 25px; color: white; background: var(--ink); border: 1px solid var(--ink); font-size: 1rem; font-weight: 650; transition: background .18s, color .18s; }
.button:hover { background: #3d443f; }
.button span { font-size: 1.25rem; line-height: 1; }
.button-small { min-height: 46px; padding: 9px 18px; font-size: .875rem; gap: 25px; }
.button-white { background: white; color: var(--ink); border-color: white; }
.button-white:hover { background: #e6ebe8; border-color: #e6ebe8; }
.text-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 44px; font-weight: 650; font-size: 1rem; }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.menu-toggle { display: none; }
.eyebrow { font-family: "Helvetica Neue", Arial, sans-serif; font-size: .8125rem; font-weight: 600; line-height: 1.5; letter-spacing: .12em; display: flex; align-items: center; gap: 10px; }
.square { width: 7px; height: 7px; background: currentColor; }
.hero { padding-top: 48px; }
.hero-layout { display: grid; grid-template-columns: 1.04fr 1fr; gap: clamp(30px,5vw,75px); align-items: center; }
.hero-copy { padding: 24px 0; }
.hero-copy .eyebrow { margin-bottom: 30px; }
.hero-lead { margin-top: 30px; font-size: 1.25rem; line-height: 1.75; letter-spacing: -.035em; }
.hero-lead strong { font-weight: 550; }
.hero-sub { color: var(--muted); margin-top: 12px; font-size: 1rem; }
.hero-actions { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-top: 32px; }
.hero-labels { display: flex; flex-wrap: wrap; gap: 0; margin-top: 42px; font-size: .875rem; color: var(--muted); }
.hero-labels span + span::before { content: "/"; display: inline-block; padding-inline: 16px; color: #8d9690; }
.hero-product { position: relative; background: #242925; color: white; min-width: 0; overflow: hidden; }
.stage-top { display: flex; justify-content: space-between; gap: 15px; padding: 24px 28px 0; font-family: Arial, sans-serif; font-size: .75rem; font-weight: 500; letter-spacing: .1em; color: #d1d8d3; }
.product-art { position: relative; height: 500px; isolation: isolate; display: grid; place-items: center; }
.volume-display { position: absolute; z-index: -1; top: 22px; left: 23px; font-family: Arial, sans-serif; font-size: clamp(8rem,15vw,15rem); font-weight: 500; line-height: 1; letter-spacing: -.07em; color: #4d5950; }
.volume-display span { font-size: .3em; font-weight: 400; letter-spacing: -.08em; }
.pouch-front, .pouch-back { position: absolute; width: 43%; max-width: 240px; height: auto; box-shadow: 12px 24px 35px #0005; }
.pouch-front { transform: translate(19%,10px) rotate(10deg); }
.pouch-back { transform: translate(-31%,8px) rotate(-12deg); opacity: .8; }
.hero-product figcaption { display: flex; justify-content: space-between; gap: 16px; margin: 0 28px; padding: 18px 0 22px; border-top: 1px solid #576058; color: #d1d8d3; font-size: .75rem; letter-spacing: .035em; }
.hero-foot { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding: 23px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .875rem; }
.hero-foot a { display: flex; gap: 26px; }
.section { padding: 100px 0; position: relative; }
.section-top { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; border-top: 1px solid currentColor; padding-top: 18px; margin-bottom: 55px; }
.section-note { font-size: .8125rem; color: var(--muted); }
.product-section { padding-top: 75px; }
.product-layout { display: grid; grid-template-columns: 1.25fr 1fr; gap: 90px; align-items: start; }
.section-lead { font-size: 1.125rem; margin-top: 27px; }
.body-note { color: var(--muted); margin-top: 20px; max-width: 480px; }
.spec-table { margin-top: 38px; font-size: 1rem; }
.spec-table > div { display: grid; grid-template-columns: 130px 1fr; gap: 15px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec-table dt { color: var(--muted); }
.spec-table dd { margin: 0; font-weight: 550; }
.supply-card { background: var(--ink); color: white; padding: 40px; }
.supply-card .eyebrow { color: #c0c9c2; }
.price-label { margin-top: 35px; font-size: 1rem; }
.price { display: flex; align-items: baseline; gap: 14px; line-height: 1.1; margin-top: 10px; }
.price strong { font-family: "Helvetica Neue", Arial, sans-serif; font-size: 5.8rem; font-weight: 500; letter-spacing: -.065em; }
.price span { font-size: 1.25rem; }
.price-tax { color: #c0c9c2; font-size: .875rem; margin-top: 10px; }
.supply-card-line { height: 1px; background: var(--dark-line); margin: 30px 0; }
.supply-details { display: grid; gap: 16px; font-size: .9375rem; }
.supply-details > div { display: grid; grid-template-columns: 90px 1fr; gap: 12px; }
.supply-details dt { color: #b6c0b9; }
.supply-details dd { margin: 0; }
.supply-note { color: #b6c0b9; margin: 25px 0; font-size: .875rem; line-height: 1.8; }
.supply-card .button { width: 100%; }
.use-section { background: var(--soft); }
.use-heading, .supply-heading { display: flex; justify-content: space-between; gap: 35px; align-items: end; }
.use-heading > p { color: var(--muted); }
.use-steps { display: grid; grid-template-columns: repeat(3,1fr); margin: 55px 0 0; padding: 0; list-style: none; }
.use-steps li { padding: 0 32px; border-left: 1px solid #c9d0cb; }
.use-steps li:first-child { padding-left: 0; border-left: 0; }
.use-steps li:last-child { padding-right: 0; }
.step-number { display: block; font-family: Arial, sans-serif; font-size: 4.25rem; font-weight: 400; line-height: 1; color: #7c8880; letter-spacing: -.055em; margin-bottom: 35px; }
.use-steps h3 { font-size: 1.375rem; letter-spacing: -.05em; }
.use-steps p { margin-top: 15px; color: var(--muted); max-width: 290px; }
.use-note { margin-top: 42px; border-top: 1px solid #c9d0cb; padding-top: 20px; color: var(--muted); font-size: .875rem; }
.use-note strong { margin-right: 15px; color: var(--ink); }
.supply-section { background: #252a26; color: white; }
.supply-section .section-top { color: #89958c; }
.supply-section .eyebrow { color: #d2dbd5; }
.supply-section .section-note { color: #b8c3bc; }
.supply-heading > p { color: #c0cac3; }
.business-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 60px; }
.business-grid article { border-top: 1px solid #626e65; padding-top: 28px; }
.business-kind { color: #b3c0b7; font-family: Arial, sans-serif; font-size: .8125rem; letter-spacing: .08em; margin-bottom: 18px; }
.business-grid h3 { font-size: 1.75rem; }
.business-grid article > p:not(.business-kind) { color: #c0cac3; max-width: 450px; margin-top: 20px; }
.business-grid .text-link { margin-top: 18px; }
.supply-flow { list-style: none; display: grid; grid-template-columns: repeat(3,1fr); margin: 58px 0 0; padding: 28px 0; border-top: 1px solid #626e65; border-bottom: 1px solid #626e65; gap: 30px; }
.supply-flow li { display: flex; align-items: start; gap: 18px; }
.supply-flow li > span { font-family: Arial, sans-serif; font-size: .875rem; color: #b3c0b7; padding-top: 2px; }
.supply-flow strong { font-size: 1.0625rem; font-weight: 650; }
.supply-flow p { margin-top: 5px; font-size: .875rem; color: #c0cac3; }
.supply-footnote { margin-top: 22px; font-size: .875rem; color: #c0cac3; }
.anchor-alias { position: absolute; top: 0; }
.questions-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.questions-layout h2 { margin-top: 25px; }
.question-list { border-top: 1px solid var(--ink); }
details { border-bottom: 1px solid var(--line); }
summary { padding: 22px 38px 22px 0; font-size: 1.0625rem; font-weight: 650; line-height: 1.7; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary > span { position: absolute; right: 2px; top: 28px; width: 14px; height: 14px; }
summary > span::before, summary > span::after { content: ""; position: absolute; background: currentColor; width: 14px; height: 1px; top: 7px; left: 0; }
summary > span::after { transform: rotate(90deg); }
details[open] summary > span::after { transform: rotate(0); }
details > div { padding: 0 38px 25px 0; color: var(--muted); }
details .text-link { margin-top: 10px; color: var(--ink); }
.about-section { background: var(--soft); padding: 65px 0; }
.about-layout { display: grid; grid-template-columns: .6fr 1.3fr .3fr; align-items: start; gap: 50px; }
.about-layout > .eyebrow { padding-top: 7px; }
.about-layout h2 { font-size: 2.125rem; }
.about-layout p:not(.eyebrow) { margin-top: 24px; color: var(--muted); max-width: 570px; }
.about-mark { font-family: Arial,sans-serif; font-size: 8rem; font-weight: 700; letter-spacing: -.1em; line-height: 1; text-align: right; color: #c0c9c3; align-self: center; }
.contact-section { background: var(--ink); color: white; padding: 80px 0 90px; }
.contact-section .section-top { border-color: #67736a; color: #c0cac3; }
.contact-section .section-note { color: #c0cac3; }
.contact-layout { display: grid; grid-template-columns: 1.25fr 1fr; gap: 70px; align-items: end; }
.contact-layout h2 { font-size: clamp(2rem,3.2vw,3rem); }
.contact-description { color: #b6c0b9; margin-top: 25px; }
.contact-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-top: 32px; }
.contact-info { border-top: 1px solid #67736a; padding-top: 25px; }
.contact-info .eyebrow { color: #b6c0b9; }
.email-address { display: block; font-family: "Helvetica Neue",Arial,sans-serif; font-size: clamp(1.2rem,2.4vw,2rem); line-height: 1.4; letter-spacing: -.025em; margin-top: 24px; overflow-wrap: anywhere; }
.email-address:hover { text-decoration: underline; text-underline-offset: 5px; }
.copy-email { color: white; background: none; border: 0; border-bottom: 1px solid #87978c; padding: 8px 0; font-size: .875rem; margin-top: 10px; }
.copy-email span { margin-left: 20px; }
.mail-help { color: #b6c0b9; font-size: .875rem; margin-top: 20px; }
.copy-status { color: #d2e7d9; font-size: .875rem; min-height: 1.7em; margin-top: 10px; }
.site-footer { padding: 40px 0; }
.footer-layout { display: flex; justify-content: space-between; gap: 50px; align-items: center; }
.footer-address { margin-left: auto; color: var(--muted); font-size: .8125rem; }
.footer-address p + p { margin-top: 9px; font-size: .75rem; }
.back-top { display: flex; gap: 20px; font-size: .875rem; align-self: start; }
.mobile-only, .mobile-sticky-cta { display: none; }
.error-page { min-height: 90vh; display: grid; place-items: center; padding: 40px 24px; }
.error-page > div { width: min(100%, 800px); }
.error-code { font-family: Arial, sans-serif; font-size: 6rem; line-height: 1; margin: 55px 0 25px; color: var(--muted); }
.error-page h1 { font-size: clamp(2rem, 5vw, 3rem); }
.error-page .button { margin-top: 35px; }
@media (min-width: 1600px) { .hero { padding-top: 65px; } .product-art { height: 540px; } }
@media (max-width: 1100px) {
  .shell { width: calc(100% - 48px); }
  .header-inner { gap: 25px; }
  .site-nav { gap: 20px; }
  .hero-layout { gap: 30px; }
  .product-art { height: 440px; }
  .hero-copy .eyebrow { margin-bottom: 23px; }
  .hero-actions { gap: 20px; }
  .hero-labels { margin-top: 25px; }
  .product-layout { gap: 50px; }
  .supply-card { padding: 30px; }
  .questions-layout { gap: 50px; }
  .contact-layout { gap: 45px; }
  .about-layout { gap: 30px; }
}
@media (max-width: 820px) {
  html { scroll-padding-top: 90px; }
  .header-inner { min-height: 78px; flex-wrap: wrap; gap: 18px; }
  .brand { font-size: 1.8rem; }
  .header-cta { margin-left: auto; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 11px; min-width: 65px; min-height: 46px; color: var(--ink); border: 0; background: none; padding: 8px 0 8px 8px; }
  .menu-label { font-size: .875rem; }
  .menu-bars { width: 19px; height: 14px; position: relative; }
  .menu-bars::before, .menu-bars::after { content: ""; position: absolute; width: 19px; height: 1px; background: currentColor; left: 0; transition: transform .2s; }
  .menu-bars::before { top: 3px; } .menu-bars::after { top: 11px; }
  .menu-toggle[aria-expanded="true"] .menu-bars::before { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-bars::after { transform: translateY(-4px) rotate(-45deg); }
  .site-nav { display: none; flex-basis: 100%; order: 4; margin: 0; padding: 0 0 18px; flex-wrap: wrap; gap: 15px 28px; }
  .site-nav.is-open { display: flex; }
  .hero-layout { grid-template-columns: 1fr 1fr; gap: 20px; }
  h1 { font-size: 3.25rem; }
  .hero-lead { font-size: 1.125rem; }
  .hero-copy { padding: 10px 0; }
  .product-art { height: 375px; }
  .stage-top { padding: 20px 20px 0; }
  .hero-product figcaption { flex-direction: column; gap: 4px; margin: 0 20px; padding: 14px 0 16px; }
  .pouch-front, .pouch-back { width: 44%; }
  .hero-sub { max-width: 275px; }
  .section { padding: 75px 0; }
  .product-layout { gap: 35px; grid-template-columns: 1fr 1fr; }
  .spec-table > div { grid-template-columns: 95px 1fr; }
  .supply-card { padding: 25px; }
  .supply-details > div { grid-template-columns: 1fr; gap: 3px; }
  .use-heading, .supply-heading { align-items: start; flex-direction: column; gap: 24px; }
  .use-steps li { padding-inline: 20px; }
  .use-steps h3 { font-size: 1.2rem; }
  .business-grid { gap: 35px; }
  .questions-layout { grid-template-columns: .6fr 1fr; gap: 35px; }
  .about-layout { grid-template-columns: 1fr 2fr; }
  .about-mark { display: none; }
  .contact-layout { grid-template-columns: 1fr; gap: 45px; }
  .contact-info { max-width: 520px; }
  .email-address { font-size: 1.75rem; }
  .footer-layout { gap: 25px; flex-wrap: wrap; }
  .back-top { margin-left: auto; }
}
@media (max-width: 620px) {
  body { padding-bottom: 62px; }
  .shell { width: calc(100% - 40px); }
  .header-inner { min-height: 75px; gap: 15px; }
  .brand { font-size: 1.75rem; }
  .brand span { font-size: .75rem; }
  .header-cta { display: none; }
  .menu-toggle { margin-left: auto; }
  .hero { padding-top: 30px; }
  .hero-layout { grid-template-columns: 1fr; gap: 30px; }
  .hero-copy { padding: 5px 0 0; }
  .hero-copy .eyebrow { font-size: .75rem; margin-bottom: 22px; }
  h1 { font-size: clamp(2.9rem, 11.4vw, 4.2rem); letter-spacing: -.065em; }
  .hero-lead { font-size: 1.125rem; margin-top: 23px; }
  .hero-sub { max-width: none; margin-top: 10px; }
  .hero-actions { margin-top: 25px; gap: 20px; }
  .hero-actions .button { padding: 13px 20px; gap: 30px; }
  .hero-actions .text-link { font-size: .9375rem; gap: 10px; }
  .hero-labels { margin-top: 24px; }
  .hero-labels span + span::before { padding-inline: 13px; }
  .product-art { height: 365px; }
  .volume-display { font-size: 9.5rem; top: 12px; left: 24px; }
  .pouch-front, .pouch-back { width: 41%; max-width: 180px; }
  .hero-product figcaption { flex-direction: row; flex-wrap: wrap; }
  .hero-foot { margin-top: 25px; padding-block: 18px; font-size: .8125rem; }
  .hero-foot a { gap: 10px; white-space: nowrap; }
  .section { padding: 60px 0; }
  .section-top { margin-bottom: 35px; gap: 10px; flex-wrap: wrap; }
  .section-note { font-size: .75rem; }
  .eyebrow { font-size: .75rem; }
  h2 { font-size: 2.2rem; }
  .product-layout { grid-template-columns: 1fr; gap: 35px; }
  .section-lead { margin-top: 20px; font-size: 1.0625rem; }
  .body-note { margin-top: 15px; }
  .spec-table { margin-top: 25px; font-size: .9375rem; }
  .spec-table > div { grid-template-columns: 98px 1fr; gap: 12px; }
  .supply-card { padding: 30px 25px; }
  .price-label { margin-top: 26px; }
  .price strong { font-size: 5rem; }
  .supply-details > div { grid-template-columns: 90px 1fr; gap: 10px; }
  .use-heading { gap: 20px; }
  .use-heading h2 { font-size: 2rem; }
  .use-steps { grid-template-columns: 1fr; margin-top: 35px; }
  .use-steps li, .use-steps li:first-child, .use-steps li:last-child { border-left: 0; border-top: 1px solid #c9d0cb; padding: 24px 0; display: grid; grid-template-columns: 55px 1fr; column-gap: 20px; align-items: start; }
  .step-number { font-size: 2.4rem; grid-row: span 2; margin: 0; padding-top: 2px; }
  .use-steps h3 { font-size: 1.25rem; padding-top: 3px; }
  .use-steps p { margin-top: 8px; max-width: none; }
  .use-note { margin-top: 5px; }
  .use-note strong { display: block; margin-bottom: 8px; }
  .business-grid { grid-template-columns: 1fr; gap: 35px; margin-top: 40px; }
  .business-grid article { padding-top: 25px; }
  .business-grid article > p:not(.business-kind) { margin-top: 15px; }
  .supply-flow { grid-template-columns: 1fr; gap: 25px; margin-top: 35px; }
  .supply-flow p { margin-top: 2px; }
  .questions-layout { grid-template-columns: 1fr; gap: 32px; }
  .questions-layout h2 { margin-top: 20px; }
  .questions-layout h2 br { display: none; }
  summary { font-size: 1rem; }
  details > div { padding-right: 20px; }
  .about-section { padding: 50px 0; }
  .about-layout { grid-template-columns: 1fr; gap: 22px; }
  .about-layout h2 { font-size: 1.875rem; }
  .about-layout p:not(.eyebrow) { margin-top: 20px; }
  .contact-section { padding: 60px 0 50px; }
  .contact-layout h2 { font-size: 2rem; }
  .contact-description { margin-top: 22px; }
  .contact-actions { gap: 16px 25px; margin-top: 25px; }
  .email-address { font-size: clamp(1.15rem,6.4vw,1.8rem); }
  .site-footer { padding: 30px 0; }
  .footer-layout { align-items: start; gap: 25px; }
  .footer-address { order: 3; width: 100%; margin: 0; }
  .back-top { padding-top: 4px; }
  .mobile-sticky-cta { display: flex; position: fixed; z-index: 90; bottom: 0; left: 0; right: 0; min-height: 62px; padding: 15px 25px calc(15px + env(safe-area-inset-bottom)); background: var(--ink); color: white; border-top: 1px solid #627065; justify-content: space-between; align-items: center; font-size: 1rem; font-weight: 650; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media print {
  .site-header, .hero-actions, .hero-foot a, .mobile-sticky-cta, .copy-email, .back-top { display: none; }
  body { padding: 0; }
  .section, .about-section, .contact-section { padding: 25px 0; }
  .shell { width: 100%; }
  .hero-product { max-width: 350px; }
  details > div { display: block; }
}