/* irisdeck.com — one static page built from web/src/.
   Colors from the Hidden Deck brand pack: indigo #263B70, mint #8BE0BE, ink #17233B. */
:root {
  --indigo: #263b70;
  --indigo-2: #33508f;
  --indigo-deep: #17233b;
  --mint: #8be0be;
  --mint-2: #5fcf9f;
  --mint-soft: #e3f7ee;
  --sky: #eef3f9;
  --paper: #f7f9fc;
  --card: #ffffff;
  --ink: #17233b;
  --ink-2: #4a5872;
  --ink-3: #7a869c;
  --line: #e1e7ef;
  --radius: 22px;
  --shadow: 0 1px 2px rgb(23 35 59 / 0.05), 0 14px 34px -14px rgb(38 59 112 / 0.18);
  color-scheme: light;
  font-family: 'Segoe UI Variable Text', 'Segoe UI', system-ui, -apple-system, 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
}
:lang(ko) { word-break: keep-all; }
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--paper); overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--indigo-2); text-underline-offset: 3px; }
a:hover { color: var(--indigo); }
:focus-visible { outline: 3px solid var(--mint-2); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { color: var(--indigo-deep); font-family: 'Segoe UI Variable Display', 'Segoe UI', system-ui, -apple-system, 'Malgun Gothic', sans-serif; letter-spacing: -0.02em; line-height: 1.2; margin: 0; }
h1 { font-size: clamp(38px, 5.2vw, 64px); font-weight: 700; letter-spacing: -0.035em; line-height: 1.06; }
h1 em { font-style: normal; color: var(--indigo); background: linear-gradient(transparent 62%, var(--mint) 62%, var(--mint) 92%, transparent 92%); padding: 0 2px; }
h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; letter-spacing: -0.03em; }
h3 { font-size: 18px; font-weight: 650; }
:lang(ko) h1, :lang(ko) h2 { letter-spacing: -0.02em; }
p { margin: 0; }
.i { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 760px; }
.skip { position: absolute; left: 16px; top: -60px; background: var(--indigo); color: #fff; padding: 8px 14px; border-radius: 10px; z-index: 10; }
.skip:focus { top: 12px; }

/* Header */
.top { position: sticky; top: 0; z-index: 5; background: rgb(247 249 252 / 0.85); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--line); }
.top-row { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { line-height: 0; }
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav a, .lang { color: var(--ink-2); text-decoration: none; font-size: 15px; font-weight: 500; padding: 7px 12px; border-radius: 999px; }
.nav a:hover, .lang:hover { color: var(--indigo); background: var(--sky); }
.lang { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--card); }
.lang .i { width: 17px; height: 17px; }

/* Hero: the picture fills the section, the words sit in its empty side. */
.hero { position: relative; display: grid; background: #f3f9fe; overflow: hidden; }
.hero > * { grid-area: 1 / 1; }
.hero-art img { width: 100%; height: 100%; min-height: 560px; object-fit: cover; object-position: 75% center; }
.hero-copy { position: relative; z-index: 2; align-self: center; padding-top: 56px; padding-bottom: 56px; }
.hero-copy > * { max-width: 520px; }
.eyebrow { color: var(--indigo-2); font-size: 14px; font-weight: 650; letter-spacing: 0.02em; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.eyebrow::before { content: ''; width: 18px; height: 4px; border-radius: 4px; background: var(--mint-2); }
.lead { font-size: clamp(17px, 1.6vw, 19px); color: var(--ink-2); margin-top: 20px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.cta.center { justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 22px; border-radius: 14px; font-weight: 600; font-size: 16px; text-decoration: none; }
.btn-store { background: var(--indigo-deep); color: #fff; cursor: default; }
.btn-store .i { width: 24px; height: 24px; color: var(--mint); }
.btn-store > span { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.btn-store small { font-size: 12px; font-weight: 500; color: #c6d0e2; }
.btn-ghost { color: var(--indigo); background: rgb(255 255 255 / 0.7); border: 1px solid var(--line); }
.btn-ghost:hover { background: #fff; color: var(--indigo-deep); }
.chips { list-style: none; padding: 0; margin: 30px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; color: var(--ink-2); background: rgb(255 255 255 / 0.75); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px 6px 10px; }
.chips .i { width: 17px; height: 17px; color: var(--indigo-2); }

/* Sections */
.section { padding: 100px 0; }
.section h2 { max-width: 760px; }
.section-lead { font-size: 18px; color: var(--ink-2); margin-top: 18px; max-width: 640px; }

.steps { list-style: none; padding: 0; margin: 44px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: none; }
.steps li { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.steps h3 { margin: 18px 0 8px; }
.steps p { color: var(--ink-2); }
.step-no { position: absolute; top: 24px; right: 26px; font-size: 44px; font-weight: 800; line-height: 1; color: var(--sky); }
.step-icon, .feature-icon { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; background: var(--mint-soft); color: var(--indigo); }
.step-icon .i, .feature-icon .i { width: 23px; height: 23px; }

.split { background: var(--card); border-top: 1px solid var(--line); }
.split.flip { background: var(--paper); }
.split-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 64px; align-items: center; }
.split.flip .split-art { order: 2; }
.split-art { margin: 0; }
.split-art img { border-radius: 28px; box-shadow: var(--shadow); }
.points { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 12px; }
.points li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink); }
.points .i { color: #fff; background: var(--mint-2); border-radius: 50%; padding: 3px; width: 22px; height: 22px; margin-top: 2px; stroke-width: 2.6; }
.note { margin-top: 22px; font-size: 14.5px; color: var(--ink-2); background: var(--mint-soft); border-radius: 12px; padding: 12px 16px; }

#features { border-top: 1px solid var(--line); background: var(--card); }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 44px; }
.feature { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: var(--paper); }
.feature h3 { margin: 16px 0 6px; }
.feature p { color: var(--ink-2); }

/* Privacy band */
.band { background: var(--indigo); color: #dfe6f3; }
.band h2 { color: #fff; }
.band .eyebrow { color: var(--mint); }
.band .section-lead { color: #c9d3e6; }
.band-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.band-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.band-list li { display: flex; gap: 16px; align-items: flex-start; background: rgb(255 255 255 / 0.07); border: 1px solid rgb(255 255 255 / 0.12); border-radius: 18px; padding: 18px 20px; }
.band-list .i { width: 24px; height: 24px; color: var(--mint); margin-top: 2px; }
.band-list strong { display: block; color: #fff; font-size: 17px; }
.band-list span { color: #c9d3e6; }

.closing { text-align: center; }
.closing-mark { margin: 0 auto 26px; }
.closing h2, .closing .section-lead { margin-left: auto; margin-right: auto; }

/* Footer */
.foot { background: var(--indigo-deep); color: #aeb9cf; padding: 44px 0; font-size: 14px; }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; }
.foot-meta { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang-foot { background: transparent; border-color: rgb(255 255 255 / 0.18); color: #dfe6f3; font-size: 14px; padding: 4px 10px; }
.lang-foot:hover { background: rgb(255 255 255 / 0.08); color: #fff; }

/* Narrower screens: the art slides right and a wash keeps the words readable over it. */
@media (min-width: 768px) and (max-width: 1100px) {
  .hero::before { content: ''; grid-area: 1 / 1; position: relative; z-index: 1; background: linear-gradient(90deg, #f3f9fe 38%, rgb(243 249 254 / 0.75) 58%, transparent 78%); }
  .hero-art img { object-position: 100% center; }
}
@media (max-width: 960px) {
  .nav { display: none; }
  .lang { margin-left: auto; }
  .steps, .features { grid-template-columns: minmax(0, 1fr); }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-grid, .band-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .split.flip .split-art { order: 0; }
  .hero-copy > * { max-width: 440px; }
}
/* Phones: the tall picture, words in its empty top. */
@media (max-width: 767px) {
  .wrap { padding: 0 16px; }
  .hero { display: flex; flex-direction: column; }
  .hero-copy { order: 0; }
  .hero-art { order: 1; }
  .hero-copy { padding-top: 36px; padding-bottom: 0; z-index: 1; }
  .hero-copy > * { max-width: none; }
  .hero-art img { min-height: 0; height: auto; aspect-ratio: 2 / 3; object-fit: cover; }
  .hero-art { display: block; margin-top: -42vw; }
  .hero-art img { -webkit-mask-image: linear-gradient(transparent, #000 22%); mask-image: linear-gradient(transparent, #000 22%); }
  .section { padding: 68px 0; }
  .features { grid-template-columns: minmax(0, 1fr); }
  .btn { flex: 1 1 auto; justify-content: center; }
  .foot-meta { margin-left: 0; }
}

/* Privacy, support and terms */
.band-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 22px; color: var(--mint); font-weight: 600; text-decoration: none; }
.band-link:hover { color: #fff; }
.doc-head { padding: 64px 0 36px; background: linear-gradient(180deg, var(--sky), var(--paper)); }
.doc-head h1 { font-size: clamp(32px, 4.4vw, 48px); }
.doc-head .meta { margin-top: 14px; color: var(--ink-2); font-size: 17px; }
.meta.prevails { margin: 0 0 20px; font-size: 14.5px; color: var(--ink-3); }
.doc { padding-bottom: 96px; }
.doc > h2 { font-size: 22px; margin: 44px 0 12px; scroll-margin-top: 90px; }
.doc > p { color: var(--ink-2); margin-top: 10px; }
.doc > p strong { color: var(--ink); }
.doc code { font-family: 'Cascadia Mono', Consolas, monospace; font-size: 0.88em; background: var(--sky); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; overflow-wrap: anywhere; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; }
.summary { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--mint-2); border-radius: 18px; padding: 24px 28px; box-shadow: var(--shadow); }
.summary h2 { font-size: 15px; color: var(--indigo-2); margin-bottom: 14px; }
.summary ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.summary li { display: flex; gap: 12px; align-items: flex-start; }
.summary .i { color: var(--mint-2); margin-top: 3px; }
.contact { display: flex; gap: 20px; align-items: flex-start; box-shadow: var(--shadow); }
.contact h2 { font-size: 19px; margin-bottom: 4px; }
.contact .small { font-size: 14.5px; color: var(--ink-3); margin-top: 8px; }
.doc > h2.group { font-size: 14px; font-weight: 700; letter-spacing: 0.04em; color: var(--indigo-2); margin: 48px 0 12px; }
.faq { background: var(--card); border: 1px solid var(--line); border-radius: 16px; margin-top: 10px; }
.faq[open] { box-shadow: var(--shadow); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 22px; font-weight: 600; font-size: 16.5px; color: var(--indigo-deep); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ''; flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--sky) no-repeat center / 12px 12px url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M6 1v10M1 6h10' stroke='%23263b70' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E"); transition: transform 0.2s; }
.faq[open] summary::after { transform: rotate(45deg); background-color: var(--mint-soft); }
.faq p { padding: 0 22px; color: var(--ink-2); }
.faq p + p { margin-top: 10px; }
.faq p:last-child { padding-bottom: 20px; }
.faq em, .doc em { font-style: normal; font-weight: 600; color: var(--ink); }
.nav a[aria-current="page"] { color: var(--indigo); background: var(--sky); }

/* Footer links */
.foot .wrap { display: grid; gap: 22px; }
.foot-links { justify-content: space-between; border-top: 1px solid rgb(255 255 255 / 0.1); padding-top: 20px; }
.foot-links nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot a:not(.lang) { color: #dfe6f3; text-decoration: none; }
.foot a:not(.lang):hover { color: #fff; text-decoration: underline; }
@media (max-width: 767px) {
  .contact { flex-direction: column; }
  .foot-links { flex-direction: column; align-items: flex-start; }
}