:root{
  --navy:#0d274b; --navy2:#183a65; --teal:#0a9b91; --orange:#e48700;
  --blue:#2c67d8; --ink:#17243a; --muted:#64748b; --line:#e4eaf1;
  --soft:#f6f8fb; --cream:#fff8ee; --white:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65;letter-spacing:-.015em;word-break:keep-all;overflow-wrap:break-word}
a{color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,228,238,.9)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;color:var(--navy)}
.brand img{width:38px;height:38px;border-radius:10px}
.navlinks{display:flex;gap:28px;align-items:center;font-size:14px;font-weight:700;color:#53657d}
.navlinks a{text-decoration:none}
.navlinks a.active{color:var(--navy)}
.nav-cta{padding:10px 16px;border-radius:10px;background:var(--navy);color:#fff!important}
.hero{padding:88px 0 72px;background:radial-gradient(circle at 80% 10%,#e8f5f4 0,transparent 35%),linear-gradient(180deg,#fbfcfe,#fff)}
.hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
.eyebrow{font-size:13px;font-weight:900;color:var(--teal);letter-spacing:.08em}
.hero h1{font-size:clamp(40px,5vw,68px);line-height:1.08;letter-spacing:-.055em;color:var(--navy);margin:14px 0 22px}
.hero h1 span{color:var(--teal)}
.hero p{font-size:19px;color:var(--muted);margin:0 0 30px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 19px;border-radius:12px;text-decoration:none;font-weight:850}
.btn-primary{background:var(--navy);color:#fff}
.btn-light{background:#fff;border:1px solid var(--line);color:var(--navy)}
.app-notice-trigger{font:inherit;cursor:pointer}
.btn.app-notice-trigger{border:0}
.app-notice-link{display:inline;padding:0;border:0;background:none;color:var(--teal);font:inherit;font-weight:700;cursor:pointer}
.app-notice-link:hover{text-decoration:underline}
.mock{background:#fff;border:1px solid var(--line);border-radius:24px;padding:14px;box-shadow:0 24px 70px rgba(27,55,91,.12)}
.mock img{border-radius:14px}
.trustline{margin-top:16px;font-size:13px;color:#7a889b}
.intro-video-section{background:radial-gradient(circle at 50% 18%,rgba(10,155,145,.09),transparent 42%),linear-gradient(180deg,#fff,#f7f9fc)}
.intro-video-head{max-width:820px;margin:0 auto 38px;text-align:center}
.intro-video-head h2{margin-top:8px}
.intro-video-frame{position:relative;width:min(100%,980px);aspect-ratio:16/9;margin:0 auto;overflow:hidden;border:1px solid rgba(13,39,75,.12);border-radius:26px;background:#0d274b;box-shadow:0 28px 70px rgba(13,39,75,.18)}
.intro-video-poster{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;background:#0d274b;cursor:pointer;overflow:hidden}
.intro-video-poster img{width:100%;height:100%;object-fit:cover}
.intro-video-poster:focus-visible{outline:4px solid var(--blue);outline-offset:-4px}
.intro-video-play{position:absolute;left:50%;top:50%;z-index:2;width:86px;height:86px;border-radius:50%;background:rgba(255,255,255,.96);box-shadow:0 14px 38px rgba(7,23,45,.28);transform:translate(-50%,-50%);transition:transform .2s ease,background .2s ease}
.intro-video-play::after{content:"";position:absolute;left:35px;top:27px;border-top:16px solid transparent;border-bottom:16px solid transparent;border-left:24px solid var(--blue)}
.intro-video-poster:hover .intro-video-play{background:#fff;transform:translate(-50%,-50%) scale(1.06)}
.intro-video-duration{position:absolute;right:18px;bottom:16px;z-index:2;padding:5px 10px;border-radius:8px;background:rgba(7,23,45,.82);color:#fff;font-size:13px;font-weight:800;letter-spacing:.01em}
.intro-video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.intro-video-foot{text-align:center;margin-top:26px}
.intro-video-foot a{color:var(--navy);font-weight:800;text-decoration:none}
.intro-video-foot a:hover{text-decoration:underline}
.section{padding:92px 0}
.section[id]{scroll-margin-top:86px}
.section.soft{background:var(--soft)}
.section-head{max-width:760px;margin-bottom:42px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.kicker{font-size:12px;font-weight:900;color:var(--orange);letter-spacing:.09em}
h2{font-size:clamp(31px,4vw,48px);line-height:1.18;letter-spacing:-.04em;color:var(--navy);margin:10px 0 14px}
.lead{font-size:18px;color:var(--muted);margin:0}
.feature3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}
.num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#e8f5f4;color:var(--teal);font-weight:900}
.card h3{font-size:21px;margin:14px 0 8px;color:var(--navy)}
.card p{margin:0;color:var(--muted)}
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
.showcase.reverse .copy{order:2}
.showcase.reverse .visual{order:1}
.copy h3{font-size:32px;line-height:1.25;color:var(--navy);margin:8px 0 14px;letter-spacing:-.035em}
.copy p{color:var(--muted);font-size:17px}
.checks{margin:20px 0 0;padding:0;list-style:none}
.checks li{padding:7px 0 7px 28px;position:relative;color:#495d75}
.checks li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:900}
.visual{background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:0 18px 55px rgba(28,52,85,.09)}
.visual img{border-radius:12px}
.mode-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.mode{padding:22px 18px;border-radius:18px;border:1px solid var(--line);background:#fff}
.mode b{display:block;color:var(--navy);margin-bottom:6px}
.mode span{font-size:14px;color:var(--muted)}
.flow{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:28px}
.flow span{padding:13px 18px;border:1px solid #d7e1ec;border-radius:999px;background:#fff;font-weight:850;color:var(--navy)}
.flow i{font-style:normal;color:#9aabc0}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.price{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px}
.price.featured{border:2px solid var(--teal);box-shadow:0 18px 50px rgba(10,155,145,.11)}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef8f7;color:#087f78;font-size:12px;font-weight:900}
.price h3{font-size:21px;margin:16px 0 4px;color:var(--navy)}
.price .price-main{font-size:34px;font-weight:900;color:var(--navy);letter-spacing:-.04em}
.price .price-main small{font-size:13px;color:#7c8898;font-weight:600}
.credit{color:var(--teal);font-weight:900;margin:8px 0 16px}
.price ul{padding-left:18px;color:#52657b}
.note{font-size:13px;color:#78879a}
.band{background:linear-gradient(135deg,#0b294f,#153d6b);color:#fff;border-radius:26px;padding:38px}
.band h3{font-size:30px;margin:0 0 10px}
.band p{color:#d4dfeb;margin:0}
.page-hero{padding:64px 0 46px;background:var(--soft);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:46px;color:var(--navy);margin:8px 0 12px;letter-spacing:-.045em}
.page-hero p{color:var(--muted);font-size:18px;max-width:780px}
.guide-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.guide-nav a{text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;font-weight:800;color:var(--navy)}
.step{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:900;color:var(--teal)}
.faq{max-width:900px;margin:auto}
details{border-bottom:1px solid var(--line);padding:20px 2px}
summary{cursor:pointer;font-weight:850;color:var(--navy);font-size:17px}
details p{color:var(--muted);margin:12px 0 0}
.contactbox{max-width:900px;margin:36px auto 0;padding:30px;background:var(--soft);border:1px solid var(--line);border-radius:20px;text-align:center}
.contact-email{color:var(--navy);font-size:18px;font-weight:800;overflow-wrap:anywhere}
.site-footer{background:#0a203d;color:#d9e2ee;padding:42px 0 24px}
.footer-top{display:flex;justify-content:space-between;gap:28px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.footer-links a,.footer-links span{text-decoration:none;color:#dce7f2;font-size:13px}
.business{margin-top:24px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:6px 18px;color:#91a5bc;font-size:12px}
.copyright{margin-top:14px;color:#71869e;font-size:12px}
.legal{max-width:800px;margin:48px auto 90px}
.legal h1{font-size:34px;color:var(--navy)}
.legal h2{font-size:20px;margin-top:34px;border-bottom:1px solid var(--line);padding-bottom:8px}
.legal h3{font-size:16px;color:var(--orange)}
.legal p,.legal li{color:#40536b;font-size:14px}
.legal table{border-collapse:collapse;width:100%;font-size:13px}
.legal th,.legal td{border:1px solid var(--line);padding:9px;text-align:left}
.table-wrap{overflow:auto}
.compare{width:100%;border-collapse:collapse;margin-top:26px;background:#fff}
.compare th,.compare td{padding:14px;border-bottom:1px solid var(--line);text-align:left}
.compare th{color:var(--navy)}
.callout{border:1px solid #dce7ef;background:#f8fbfd;border-radius:16px;padding:20px;margin-top:22px}
@media(max-width:900px){
 .hero-grid,.showcase{grid-template-columns:1fr}.showcase.reverse .copy,.showcase.reverse .visual{order:initial}
 .feature3,.pricing-grid{grid-template-columns:1fr}.mode-grid{grid-template-columns:repeat(2,1fr)}.guide-nav{grid-template-columns:1fr 1fr}
 .navlinks a:not(.nav-cta){display:none}.footer-top{flex-direction:column}
}
@media(max-width:560px){.container{width:min(100% - 24px,1180px)}.hero{padding-top:54px}.section{padding:68px 0}.mode-grid,.guide-nav{grid-template-columns:1fr}.page-hero h1{font-size:36px}.hero h1{font-size:42px}}

.brand-words{display:flex;flex-direction:column;line-height:1;text-align:left}.brand-words strong{font-size:18px;letter-spacing:-.04em}.brand-words small{font-size:8.5px;letter-spacing:.26em;margin-top:6px;color:#60728b;font-weight:800;white-space:nowrap}.nav-cta{background:#2c67d8!important;box-shadow:0 6px 16px rgba(44,103,216,.22)}.band{text-align:center}.band h3{display:flex;justify-content:center;align-items:center;min-height:46px;letter-spacing:-.025em}.grade-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:start}.grade-pair img{width:100%;height:auto;object-fit:contain}@media(max-width:700px){.grade-pair{grid-template-columns:1fr}.brand-words small{letter-spacing:.18em}}


/* ---- launch-review precision fixes ---- */
.brand{gap:11px;min-width:252px}
.brand img{width:46px;height:46px;border-radius:11px;flex:0 0 46px}
.brand-words{width:178px;display:flex;flex-direction:column;justify-content:center;line-height:1}
.brand-words strong{display:block;width:100%;font-size:21px;line-height:1.02;letter-spacing:-.055em;white-space:nowrap;color:var(--navy)}
.brand-words small{display:block;width:100%;font-size:9.5px;line-height:1;margin-top:7px;color:#60728b;font-weight:850;white-space:nowrap;letter-spacing:normal;text-align:justify;text-align-last:justify}
.nav-cta{background:#2475df!important;border:1px solid #1263cb;box-shadow:0 6px 18px rgba(36,117,223,.30);font-weight:850}
.nav-cta:hover{background:#1768cf!important}

.core-head{max-width:1180px;width:100%}
.core-head h2{white-space:nowrap;font-size:clamp(30px,3.35vw,46px);letter-spacing:-.047em}

.band{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:166px}
.band h3{display:block;min-height:0;margin:0 0 12px;font-size:32px;line-height:1.25;letter-spacing:-.03em}
.band p{max-width:860px;text-align:center}

.card-study-showcase{grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr)}
.card-study-showcase.reverse .copy{order:2}
.card-study-showcase.reverse .visual{order:1}
.compact-card-visual{width:78%;max-width:470px;justify-self:center;padding:10px}
.compact-card-visual img{width:100%;height:auto;object-fit:contain}

.settings-compact{width:52%;max-width:330px;justify-self:center;padding:10px}
.settings-compact img{width:100%;height:auto;object-fit:contain}
.repeat-showcase{grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr)}
.repeat-showcase.reverse .copy{order:2}
.repeat-showcase.reverse .visual{order:1}

/* preserve exact screenshots without accidental stretching */
.visual img{height:auto;object-fit:contain}

@media(max-width:1080px){
  .core-head h2{white-space:normal}
}
@media(max-width:900px){
  .brand{min-width:auto}.brand-words{width:150px}.brand-words strong{font-size:18px}.brand-words small{font-size:8px;margin-top:5px}
  .card-study-showcase,.repeat-showcase{grid-template-columns:1fr}
  .compact-card-visual,.settings-compact{width:min(100%,520px);max-width:520px}
  .card-study-showcase.reverse .copy,.card-study-showcase.reverse .visual,.repeat-showcase.reverse .copy,.repeat-showcase.reverse .visual{order:initial}
}

/* ---- 2026-08-08 requested final adjustments ---- */
/* Match MY / SUB / NOTE exactly to the Korean wordmark width. */
.brand-words small{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  text-align:left;
  text-align-last:auto;
  letter-spacing:0;
}
.brand-words small span{display:block}

/* Keep the hero headline on exactly two lines on desktop. */
.hero-grid{grid-template-columns:minmax(650px,.95fr) minmax(0,1.05fr);gap:44px}
.hero h1{white-space:nowrap;font-size:clamp(40px,4.45vw,68px)}

/* CREATE & IMPORT: scale the tall portrait screenshot to the copy height. */
.create-import-showcase{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.create-import-visual{width:58%;max-width:430px;justify-self:center;padding:10px}
.create-import-visual img{width:100%;height:auto}

/* GUIDE STEP 01 and document import: same compact visual balance. */
.guide-create-showcase,.guide-doc-showcase{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.guide-create-visual,.guide-doc-visual{width:58%;max-width:430px;justify-self:center;padding:10px}
.guide-create-visual img,.guide-doc-visual img{width:100%;height:auto}

@media(max-width:1080px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{white-space:normal}
}
@media(max-width:900px){
  .create-import-showcase,.guide-create-showcase,.guide-doc-showcase{grid-template-columns:1fr}
  .create-import-visual,.guide-create-visual,.guide-doc-visual{width:min(72%,430px);max-width:430px}
}

/* ---- 2026-08-09 update ---- */
/* Make the English sub-wordmark span the exact width of the Korean wordmark. */
.brand-words{width:max-content}
.brand-words strong{width:auto}
.brand-words small{width:100%;display:grid;grid-template-columns:auto auto auto;justify-content:space-between;letter-spacing:0}

/* Compact audio screenshot to match the document-import visual balance. */
.audio-study-showcase{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.audio-study-visual{width:58%;max-width:430px;justify-self:center;padding:10px}
.audio-study-visual img{width:100%;height:auto}

/* PWA install guide */
.install-section{padding-top:56px}
.install-section .section-head{max-width:900px;margin-bottom:32px}
.install-section .section-head h2{margin:8px 0 12px;font-size:clamp(30px,3.1vw,36px);line-height:1.26;letter-spacing:-.035em;white-space:normal}
.install-section .section-head .lead{max-width:850px;margin:0 auto;font-size:16px;line-height:1.75}
.env-box{margin:34px auto 28px;max-width:1000px;background:#f6f9ff;border:1px solid #dfe8f7;border-radius:20px;padding:28px 30px}
.install-section .env-box{margin-top:26px}
.env-box h3{margin:0 0 8px;font-size:20px;color:var(--navy)}
.env-box p{margin:0;color:#53657d;line-height:1.75}
.env-tags{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 14px}.env-tags span{background:#fff;border:1px solid #dce5f1;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:750;color:#38506f}
.env-note{font-size:13px!important;color:#71829a!important}
.install-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:1000px;margin:0 auto}
.install-card{background:#fff;border:1px solid #e3e8ef;border-radius:20px;padding:26px 28px;box-shadow:0 12px 30px rgba(26,47,78,.055)}
.install-card h3{margin:8px 0 14px;font-size:22px;color:var(--navy)}
.install-card ol{margin:0;padding-left:21px;color:#53657d;line-height:1.8;font-size:14px}.install-card li+li{margin-top:4px}
.os-badge{display:inline-block;font-size:11px;font-weight:900;letter-spacing:.1em;color:#2c67d8;background:#edf4ff;border-radius:999px;padding:6px 9px}
.card-note{margin:14px 0 0;font-size:12.5px;color:#7a899d}
@media(max-width:900px){.audio-study-showcase{grid-template-columns:1fr}.audio-study-visual{width:min(72%,430px);max-width:430px}.install-grid{grid-template-columns:1fr}}
@media(max-width:900px){.install-section{padding-top:52px}.install-section .section-head{max-width:760px;margin-bottom:28px}.install-section .section-head h2{font-size:clamp(29px,4.5vw,35px)}}
@media(max-width:560px){.install-section{padding-top:46px}.install-section .section-head h2{font-size:28px;line-height:1.32}.install-section .section-head .lead{font-size:15px;line-height:1.7}}
.legal{line-height:1.75}.legal ol,.legal ul{padding-left:22px}.legal li+li{margin-top:5px}.legal hr{border:0;border-top:1px solid var(--line);margin:30px 0}.legal pre.refund-formula{white-space:pre-wrap;background:#f6f9ff;border:1px solid #dfe8f7;border-radius:14px;padding:18px 20px;color:#304865;font:600 13px/1.8 Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow:auto}

/* ---- 2026-08-09 pricing/guide/wordmark refinements ---- */
@media(min-width:901px){.guide-nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.guide-nav a{padding:16px 10px;text-align:center;white-space:nowrap}}
.brand-words small{display:flex;width:100%;justify-content:flex-end;gap:28px;text-align:right;letter-spacing:0}
.brand-words small span{display:inline-block}
.price .credit small{font-size:12px;color:#718299;font-weight:700}


/* ---- 2026-08-09 v3 wordmark refinement ---- */
/* Treat MYSUBNOTE as nine letters and distribute them across the Korean wordmark width. */
.brand-words{width:max-content}
.brand-words strong{display:block;width:100%}
.brand-words small{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  gap:0;
  padding:0;
  margin-top:7px;
  text-align:initial;
  letter-spacing:0;
  white-space:nowrap;
}
.brand-words small span{display:inline-block;flex:0 0 auto}
@media(max-width:700px){
  .brand-words small{margin-top:5px}
}

/* ---- 2026-08-09 v4 content refinements ---- */
.feature-note{margin-top:20px;padding:15px 17px;border:1px solid #dce6f2;border-radius:14px;background:#f8fbff;color:#536a86;font-size:14px;line-height:1.7}
.feature-note b{color:#0b294f}.feature-note small{color:#75869b}
.dark-mode-showcase .visual img{width:100%;height:auto;object-fit:contain}

/* ---- 2026-08-09 v6 responsive navigation + swipe galleries ---- */
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:10px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--navy);transition:.2s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.carousel-shell{position:relative;overflow:hidden}
.carousel-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;overscroll-behavior-inline:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.carousel-track::-webkit-scrollbar{display:none}
.carousel-slide{flex:0 0 100%;min-width:100%;margin:0;scroll-snap-align:start;scroll-snap-stop:always;display:flex;flex-direction:column;align-items:center;justify-content:center}
.carousel-slide img{width:100%;height:auto;object-fit:contain;cursor:zoom-in;user-select:none;-webkit-user-drag:none}
.carousel-slide figcaption{width:100%;padding:9px 38px 2px;text-align:center;font-size:12.5px;color:#71829a}
.carousel-arrow{position:absolute;top:46%;transform:translateY(-50%);z-index:3;width:36px;height:36px;border:1px solid rgba(13,39,75,.16);border-radius:50%;background:rgba(255,255,255,.92);color:var(--navy);font-size:27px;line-height:1;display:grid;place-items:center;cursor:pointer;box-shadow:0 5px 18px rgba(20,45,75,.12)}
.carousel-prev{left:8px}.carousel-next{right:8px}
.carousel-status{display:flex;justify-content:center;align-items:center;gap:12px;padding:7px 0 1px;color:#71829a;font-size:12px}
.carousel-dots{display:flex;gap:6px}.carousel-dot{width:6px;height:6px;border-radius:999px;background:#cbd6e4}.carousel-dot.active{width:18px;background:#2c67d8}
.zoomable,[data-lightbox]{cursor:zoom-in}

.lightbox{position:fixed;inset:0;z-index:999;background:rgba(5,15,31,.92);display:none;align-items:center;justify-content:center;padding:54px 70px 70px}
.lightbox.open{display:flex}
.lightbox-stage{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;touch-action:pan-y}
.lightbox img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:10px;box-shadow:0 18px 70px rgba(0,0,0,.35)}
.lightbox-close{position:absolute;top:14px;right:18px;z-index:2;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.13);color:#fff;font-size:28px;cursor:pointer}
.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:46px;height:58px;border:0;border-radius:12px;background:rgba(255,255,255,.12);color:#fff;font-size:36px;cursor:pointer}
.lightbox-prev{left:14px}.lightbox-next{right:14px}
.lightbox-meta{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:2;color:#fff;background:rgba(0,0,0,.42);border-radius:999px;padding:7px 13px;font-size:13px;white-space:nowrap}
body.lightbox-lock{overflow:hidden}

@media(max-width:900px){
  .nav{height:72px;position:relative}
  .menu-toggle{display:flex;margin-left:auto}
  .navlinks{display:none;position:absolute;top:64px;right:0;width:min(310px,calc(100vw - 28px));background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 16px 46px rgba(20,45,75,.16);z-index:60;flex-direction:column;gap:0;align-items:stretch}
  .navlinks.open{display:flex}
  .navlinks a,.navlinks button,.navlinks a:not(.nav-cta){display:block!important;padding:12px 14px;border-radius:10px;font-size:14px}
  .navlinks a:hover{background:#f5f8fc}
  .navlinks .nav-cta{margin-top:7px;padding:12px 14px;text-align:center;border-radius:10px}
  .brand{min-width:0}
  .band{min-height:100px;padding:19px 18px;border-radius:20px}
  .band h3{font-size:24px;line-height:1.25;margin:0 0 7px}
  .band p{font-size:14px;line-height:1.55}
  .section:has(.band){padding:34px 0}
  .settings-compact{width:min(56vw,300px)!important;max-width:300px!important;padding:8px}
  .guide-create-visual,.guide-doc-visual,.audio-study-visual{width:min(68vw,390px);max-width:390px}
  .compact-card-visual{width:min(92vw,620px);max-width:620px}
  .carousel-arrow{width:32px;height:32px;font-size:24px;background:rgba(255,255,255,.88)}
  .carousel-slide figcaption{padding-left:30px;padding-right:30px}
  .lightbox{padding:58px 12px 66px}
  .lightbox-prev,.lightbox-next{width:38px;height:50px;font-size:30px;background:rgba(0,0,0,.32)}
  .lightbox-prev{left:4px}.lightbox-next{right:4px}
  .lightbox-close{top:10px;right:10px}
}
@media(max-width:560px){
  .intro-video-section{padding-top:64px;padding-bottom:68px}
  .intro-video-head{margin-bottom:26px}
  .intro-video-frame{border-radius:17px}
  .intro-video-play{width:62px;height:62px}
  .intro-video-play::after{left:26px;top:20px;border-top-width:11px;border-bottom-width:11px;border-left-width:17px}
  .intro-video-duration{right:11px;bottom:10px}
  .brand img{width:42px;height:42px;flex-basis:42px}
  .brand-words{width:142px}
  .brand-words strong{font-size:17px}
  .nav{height:66px}
  .navlinks{top:60px}
  .band{min-height:88px;padding:15px 14px}
  .band h3{font-size:21px}
  .band p{font-size:13px}
  .settings-compact{width:min(62vw,250px)!important}
  .carousel-slide figcaption{font-size:12px}
}


/* ---- 2026-08-09 v7 gallery refinement ---- */
/* Galleries stay interactive in-page: swipe/drag only, no overlay enlargement or arrow buttons. */
.carousel-arrow{display:none!important}
.carousel-slide img{cursor:default!important}
.zoomable,[data-lightbox]{cursor:default!important}
.lightbox{display:none!important}
.carousel-track{cursor:grab;touch-action:auto}
.carousel-track.dragging{cursor:grabbing;scroll-snap-type:none;scroll-behavior:auto;user-select:none}
.carousel-track.dragging img{pointer-events:none}
.carousel-slide figcaption{padding-left:16px;padding-right:16px}
@media(max-width:900px){
  .carousel-track{cursor:default}
}

/* ---- 2026-08-09 mobile wordmark fix ---- */
/* Keep the v3 MYSUBNOTE spacing logic on narrow/mobile layouts too. */
@media(max-width:560px){
  .brand-words{width:max-content}
  .brand-words strong{display:block;width:100%}
  .brand-words small{
    display:flex;
    width:100%;
    align-items:center;
    justify-content:space-between;
    gap:0;
    padding:0;
    margin-top:5px;
    text-align:initial;
    letter-spacing:0;
    white-space:nowrap;
  }
  .brand-words small span{display:inline-block;flex:0 0 auto}
}

/* Temporary test-site notices */
.test-site-notice{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 24px;padding:12px 16px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:rgba(255,255,255,.07);font-size:15px;line-height:1.5}
.test-site-notice b{font-size:15px}
.test-site-notice span{opacity:.82}
.test-footer-notice{display:flex;gap:10px 18px;flex-wrap:wrap}
@media(max-width:700px){.test-site-notice{margin-bottom:18px}.test-site-notice b,.test-site-notice span{width:100%}}

/* ---- user guide topics and inline tutorial cards ---- */
.howto-nav{grid-template-columns:repeat(3,minmax(0,1fr));max-width:860px}
.play-store-note{max-width:1000px;margin:18px auto 24px;text-align:center;color:#64748b;font-size:13px}
.tutorial-section{background:var(--soft)}
.tutorial-section-followup{padding-top:0}
.tutorial-topic-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.tutorial-topic-head h2{margin:8px 0 0;font-size:clamp(25px,3vw,36px);line-height:1.3}
.topic-count{flex:none;padding:6px 11px;border-radius:999px;background:#eef8f7;color:#087f78;font-size:12px;font-weight:900}
.tutorial-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start}
.tutorial-card{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 12px 36px rgba(28,52,85,.06)}
.tutorial-card.is-open{grid-column:span 3;border-color:#bcdad7}
.tutorial-trigger{display:block;width:100%;padding:0;border:0;background:transparent;color:inherit;text-align:left;font:inherit;cursor:pointer}
.tutorial-thumb{aspect-ratio:16/9;display:grid;place-items:center;padding:18px;background:linear-gradient(135deg,#f5f8fb,#eef4f7);border-bottom:1px solid var(--line);color:#8493a6;font-size:13px;font-weight:750}
.tutorial-body{display:flex;flex-direction:column;min-height:164px;padding:21px}
.tutorial-body strong{color:var(--navy);font-size:19px}
.tutorial-body>span{margin-top:7px;color:var(--muted);font-size:14px;line-height:1.6}
.tutorial-body em{margin-top:auto;padding-top:20px;color:var(--teal);font-size:13px;font-style:normal;font-weight:900}
.tutorial-player{margin:0 18px 18px;aspect-ratio:16/9;place-items:center;padding:24px;border:1px dashed #bdcad8;border-radius:14px;background:#f8fafc;color:#7b8da2;font-size:14px;text-align:center}
.tutorial-player:not([hidden]){display:grid}
.tutorial-player iframe{width:100%;height:100%;border:0;border-radius:12px}
@media(max-width:900px){.tutorial-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tutorial-card.is-open{grid-column:span 2}}
@media(max-width:560px){.howto-nav,.tutorial-grid{grid-template-columns:1fr}.tutorial-card.is-open{grid-column:span 1}.tutorial-topic-head{align-items:flex-start;flex-direction:column}}

/* Android native app beta notice */
.android-beta-box{margin:22px 0 24px;padding:20px 22px;border:1px solid rgba(73,129,255,.25);border-radius:16px;background:rgba(73,129,255,.07)}
.android-beta-box h3{margin:8px 0 6px}
.android-beta-box p{margin:0;color:var(--muted);line-height:1.7}
.beta-badge{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:rgba(73,129,255,.14);font-size:12px;font-weight:800;letter-spacing:.04em}
@media(max-width:700px){.android-beta-box{padding:17px 18px}}

/* ---- shared tutorial viewer ---- */
.session-viewer{display:grid;grid-template-columns:250px minmax(0,1fr);overflow:hidden;border:1px solid #dfe7ef;border-radius:26px;background:#fff;box-shadow:0 24px 70px rgba(24,50,84,.10)}
.session-list{padding:18px;background:#f7f9fc;border-right:1px solid #e2e9f0}
.session-list-label{display:block;padding:4px 8px 12px;color:#8291a5;font-size:11px;font-weight:900;letter-spacing:.08em}
.session-tab{position:relative;display:grid;grid-template-columns:34px 1fr;gap:11px;width:100%;margin:0 0 8px;padding:13px 12px;border:1px solid transparent;border-radius:14px;background:transparent;color:#53657d;text-align:left;font:inherit;cursor:pointer;transition:.18s ease}
.session-tab:last-child{margin-bottom:0}
.session-tab:hover{background:#fff;border-color:#e1e8ef}
.session-tab:focus-visible{outline:3px solid rgba(0,163,154,.24);outline-offset:2px}
.session-tab.active{background:#fff;border-color:#cfe7e4;color:var(--navy);box-shadow:0 8px 24px rgba(28,52,85,.07)}
.session-tab.active::before{content:"";position:absolute;left:-19px;top:12px;bottom:12px;width:4px;border-radius:0 6px 6px 0;background:var(--teal)}
.session-no{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#e8edf4;color:#66788f;font-size:12px;font-weight:900}
.session-tab.active .session-no{background:#e5f6f4;color:#087f78}
.session-copy b{display:block;margin-top:1px;color:inherit;font-size:14px;line-height:1.35}
.session-copy small{display:block;margin-top:4px;color:#94a1b2;font-size:11px;line-height:1.35}
.viewer-main{min-width:0;padding:20px}
.video-stage{position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:19px;background:#0a203d;box-shadow:0 12px 30px rgba(13,39,75,.14)}
.video-poster{position:absolute;inset:0;display:block;width:100%;height:100%;padding:0;border:0;background:#0a203d;cursor:pointer}
.video-poster[hidden],.video-embed[hidden]{display:none!important}
.video-poster img{width:100%;height:100%;object-fit:cover}
.video-poster:hover img{transform:none;opacity:1}
.video-poster:focus-visible{outline:4px solid rgba(0,163,154,.8);outline-offset:-4px}
.play-button{position:absolute;left:50%;top:50%;z-index:2;width:72px;height:72px;transform:translate(-50%,-50%);border-radius:50%;background:rgba(255,255,255,.96);box-shadow:0 12px 34px rgba(0,0,0,.25);pointer-events:none}
.play-button::after{content:"";position:absolute;left:30px;top:23px;border-top:13px solid transparent;border-bottom:13px solid transparent;border-left:19px solid var(--blue)}
.video-embed{position:absolute;inset:0;background:#07182d}
.video-embed:not([hidden]){display:block}
.session-video-shell{position:relative;width:100%;height:100%;overflow:hidden;background:#07182d}
.session-video-shell video{display:block;width:100%;height:100%;border:0;background:#07182d;object-fit:contain;cursor:pointer}
.session-video-shell video:focus-visible{outline:4px solid rgba(0,163,154,.8);outline-offset:-4px}
.session-video-controls{position:absolute;left:14px;right:14px;bottom:12px;display:grid;grid-template-columns:auto minmax(80px,1fr) auto auto auto;align-items:center;gap:10px;padding:8px 10px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:rgba(7,24,45,.78);box-shadow:0 8px 24px rgba(0,0,0,.18);color:#fff;opacity:0;transform:translateY(8px);transition:opacity .18s ease,transform .18s ease;pointer-events:none}
.session-video-shell.controls-visible .session-video-controls,.session-video-shell:focus-within .session-video-controls{opacity:1;transform:translateY(0);pointer-events:auto}
.session-video-controls button{height:30px;padding:0 8px;border:0;border-radius:7px;background:transparent;color:#fff;font:inherit;font-size:11px;font-weight:850;cursor:pointer}
.session-video-controls button:hover,.session-video-controls button:focus-visible{background:rgba(255,255,255,.14);outline:0}
.video-control-toggle{min-width:32px;font-size:15px!important}
.video-control-progress{width:100%;height:4px;margin:0;accent-color:var(--teal);cursor:pointer}
.video-control-time{font-size:11px;font-weight:750;white-space:nowrap;font-variant-numeric:tabular-nums}
@media(max-width:560px){
 .session-video-controls{left:8px;right:8px;bottom:7px;grid-template-columns:auto minmax(50px,1fr) auto auto;gap:5px;padding:6px 7px}
 .video-control-fullscreen{display:none}
 .session-video-controls button{padding:0 6px}
 .video-control-time{font-size:10px}
}
.viewer-description{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start;padding:24px 5px 5px}
.viewer-description h3{margin:0;color:var(--navy);font-size:24px;line-height:1.35;letter-spacing:-.03em}
.viewer-description p{max-width:780px;margin:9px 0 0;color:#64748b;font-size:15px;line-height:1.75}
.tutorial-download{display:inline-flex;align-items:center;gap:9px;margin-top:16px;padding:10px 14px;border:1px solid #cfe7e4;border-radius:11px;background:#f0fbfa;color:#087f78;font-size:13px;font-weight:850;text-decoration:none;transition:background .18s ease,border-color .18s ease,transform .18s ease}
.tutorial-download:hover{border-color:#9dd8d2;background:#e4f7f5;transform:translateY(-1px)}
.tutorial-download:focus-visible{outline:3px solid rgba(0,163,154,.24);outline-offset:2px}
.tutorial-download[hidden]{display:none!important}
.tutorial-download-icon{display:grid;width:25px;height:25px;place-items:center;border-radius:8px;background:#d9f3f0;color:#007c75;font-size:17px;line-height:1}
.viewer-step{padding:6px 10px;border-radius:9px;background:#f0f4f8;color:#6f8095;font-size:12px;font-weight:850;white-space:nowrap}
@media(max-width:900px){
 .session-viewer{grid-template-columns:1fr}
 .session-list{display:flex;align-items:center;gap:7px;overflow-x:auto;padding:9px 10px;border-right:0;border-bottom:1px solid #e2e9f0;scrollbar-width:none;cursor:grab;user-select:none;touch-action:pan-x}
 .session-list.dragging{cursor:grabbing;scroll-behavior:auto}
 .session-list::-webkit-scrollbar{display:none}
 .session-list-label{display:none}
 .session-tab{flex:0 0 176px;min-height:64px;grid-template-columns:30px 1fr;gap:9px;margin:0;padding:8px 9px}
 .session-tab.active::before{left:12px;right:12px;top:auto;bottom:-10px;width:auto;height:3px;border-radius:5px 5px 0 0}
 .session-no{width:30px;height:30px}
 .session-copy b{font-size:13px}
 .session-copy small{font-size:10px}
 .viewer-main{padding:14px}
 .viewer-description{grid-template-columns:1fr}
 .viewer-step{justify-self:start}
}
@media(max-width:560px){
 .session-viewer{border-radius:20px}
 .session-tab{flex-basis:150px;min-height:54px;grid-template-columns:28px 1fr;padding:7px 8px}
 .session-no{width:28px;height:28px}
 .session-copy b{font-size:12.5px}
 .session-copy small{display:none}
 .video-stage{border-radius:14px}
 .play-button{width:58px;height:58px}
 .play-button::after{left:24px;top:18px;border-top-width:11px;border-bottom-width:11px;border-left-width:16px}
 .viewer-description{padding:19px 3px 4px}
 .viewer-description h3{font-size:21px}
}


/* ===== Google Play 출시 반영 (2026-09-07) ===== */

/* 버튼 아래 작은 설명줄 — 무엇으로 열리는지 미리 알려준다.
   헤더 CTA는 공간이 좁아서 줄 높이를 최소로 잡고 letter-spacing을 줄였다. */
.nav-cta{display:inline-flex;flex-direction:column;align-items:center;line-height:1.15}
.nav-cta small{display:block;margin-top:2px;font-size:10.5px;font-weight:600;opacity:.62;letter-spacing:-.01em}

.btn-stack{display:inline-flex;flex-direction:column;align-items:center;line-height:1.2}
.btn-stack small{display:block;margin-top:3px;font-size:11.5px;font-weight:600;opacity:.6}

/* Google Play 다운로드 링크 — 아이콘과 글자를 세로 가운데로 맞춘다.
   주 동선인 위 두 버튼보다 덜 튀도록 크기와 굵기를 한 단계 낮췄다. */
.play-download{margin-top:10px;font-size:13px}
.play-download a{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.play-download img{width:12px;height:12px;flex:0 0 auto}
/* 히어로 안에서는 .hero p(font-size:19px; margin:0 0 30px)가 우선순위에서 이겨
   위 두 값이 통째로 무시됐다. 선택자를 한 단계 올려 실제로 적용되게 한다.
   (.hero p = 클래스1+요소1 > .play-download = 클래스1) */
.hero p.play-download{font-size:13px;margin:12px 0 26px}

/* 설치 안내(사용가이드)에서는 문장 안에 링크가 들어가므로 위 margin을 쓰지 않는다 */
.play-store-note.play-download{margin-top:0}