/* =========================================================
   트렌드리프 (TREND LEAF) — Landing Styles
   Palette: clean white · emerald green · vermilion red
   Type: Noto Sans KR (body/display) · JetBrains Mono (data)
   ========================================================= */

:root {
  --paper:      #FBFBF7;
  --paper-2:    #EEF6F0;   /* tinted section bg */
  --ink:        #12241C;
  --muted:      #566860;
  --line:       #E1EAE4;

  --green:      #0C7A54;   /* primary emerald */
  --green-deep: #0A5C40;
  --leaf:       #26C06A;   /* bright accent green */
  --leaf-soft:  #D9F2E3;
  --red:        #EE4327;   /* vermilion accent */
  --red-soft:   #FBE1DB;

  --white:      #FFFFFF;
  --shadow:     0 24px 60px -30px rgba(12, 122, 84, .40);
  --shadow-sm:  0 10px 30px -18px rgba(18, 36, 28, .45);
  --radius:     22px;

  --maxw: 1180px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans KR", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 92px;          /* room for fixed cta */
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

em { font-style: normal; color: var(--green); }

::selection { background: var(--leaf-soft); color: var(--green-deep); }

.container { width: min(90%, var(--maxw)); margin-inline: auto; }

/* ---------- brand (footer) ---------- */
.brand { display: inline-flex; align-items: center; gap: .55em; text-decoration: none; color: var(--ink); }
.brand__mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  background: var(--green); color: #fff; border-radius: 10px; font-size: 1rem;
  transform: rotate(-6deg);
}
.brand__name { font-weight: 900; letter-spacing: -.02em; font-size: 1.15rem; }

/* ---------- shared eyebrow / heads ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--mono);
  font-size: .74rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--green);
  background: var(--leaf-soft);
  padding: .45em .9em; border-radius: 100px;
}
.eyebrow--light { color: #fff; background: rgba(255,255,255,.16); }
.eyebrow i { color: var(--red); }
.eyebrow--light i { color: #fff; }

.head { text-align: center; max-width: 640px; margin: 0 auto 3.2rem; }
.head__title {
  font-size: clamp(1.85rem, 4.2vw, 3rem);
  font-weight: 900; line-height: 1.18;
  letter-spacing: -.03em; margin: 1rem 0 .6rem;
}
.head__sub { color: var(--muted); font-size: 1.02rem; margin: 0; }
.head__sub--left { text-align: left; }

/* =========================================================
   BUTTONS  (with light-sweep shine)
   ========================================================= */
.btn {
  --pad: .95em 1.5em;
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  padding: var(--pad);
  font-family: inherit; font-size: 1rem; font-weight: 700;
  border: none; border-radius: 100px; cursor: pointer;
  text-decoration: none; color: inherit;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
  white-space: nowrap; isolation: isolate;
}
.btn > * { position: relative; z-index: 1; }
.btn i { font-size: .9em; }
.btn .channel-icon { width: 22px; height: 22px; border-radius: 6px; object-fit: cover; }

/* diagonal light sweep */
.btn::after {
  content: ""; position: absolute; top: -30%; left: -140%; z-index: 0;
  width: 55%; height: 160%;
  background: linear-gradient(115deg, transparent 0%, rgba(255,255,255,.55) 50%, transparent 100%);
  transform: skewX(-22deg);
  pointer-events: none;
}
.btn:hover::after { animation: shine .85s var(--ease); }
@keyframes shine { from { left: -140%; } to { left: 150%; } }

.btn--primary {
  background: var(--green); color: #fff;
  box-shadow: 0 14px 30px -12px rgba(12,122,84,.7);
}
.btn--primary:hover { background: var(--green-deep); transform: translateY(-3px); box-shadow: 0 20px 40px -12px rgba(12,122,84,.85); }
/* primary buttons shine on their own, periodically */
.btn--primary::after { animation: shine 4s var(--ease) 1.4s infinite; }

.btn--line { background: #fff; color: var(--ink); border: 1.5px solid var(--line); }
.btn--line:hover { border-color: var(--green); color: var(--green); transform: translateY(-3px); }

.btn--lg { --pad: 1.15em 2.2em; font-size: 1.12rem; }

/* =========================================================
   HERO
   ========================================================= */
.hero { position: relative; overflow: hidden; padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(3rem, 7vw, 6rem); }
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(58% 55% at 82% 8%, var(--leaf-soft) 0%, transparent 60%),
    radial-gradient(45% 40% at 6% 92%, rgba(238,67,39,.08) 0%, transparent 60%);
}
.hero__bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
          mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  opacity: .5;
}
.hero__grid {
  position: relative; z-index: 1;
  width: min(90%, var(--maxw)); margin-inline: auto;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero__title {
  font-size: clamp(2.3rem, 6.2vw, 4.5rem);
  font-weight: 900; line-height: 1.08; letter-spacing: -.04em;
  margin: 1.1rem 0 1.2rem;
}
.hero__title em { position: relative; }
.hero__title em::after {
  content: ""; position: absolute; left: -.04em; right: -.04em; bottom: .06em; height: .18em;
  background: var(--red); border-radius: 4px; z-index: -1; opacity: .85;
  transform: scaleX(0); transform-origin: left;
  animation: underline 1s var(--ease) .5s forwards;
}
@keyframes underline { to { transform: scaleX(1); } }

.hero__lead { font-size: 1.1rem; color: var(--muted); max-width: 30rem; margin: 0 0 1.8rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2.2rem; }

.hero__stats {
  display: flex; gap: clamp(1.2rem, 4vw, 2.6rem);
  list-style: none; padding: 1.4rem 0 0; margin: 0;
  border-top: 1px solid var(--line);
}
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats b { font-family: var(--mono); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--green); line-height: 1; }
.hero__stats span { font-size: .82rem; color: var(--muted); margin-top: .4rem; }

/* hero art (framed device) */
.hero__art { position: relative; }
.hero__frame {
  position: relative; background: var(--white);
  border-radius: var(--radius); padding: 1.1rem;
  box-shadow: var(--shadow); border: 1px solid var(--line);
  transition: transform .4s var(--ease);
}
.hero__frame img { border-radius: 14px; }
.hero__line { position: absolute; inset: 1.1rem; width: calc(100% - 2.2rem); height: calc(100% - 2.2rem); pointer-events: none; }
.hero__line path { stroke-dasharray: 900; stroke-dashoffset: 900; animation: draw 2.4s var(--ease) .4s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.chip {
  position: absolute; z-index: 3;
  display: inline-flex; align-items: center; gap: .45em;
  background: #fff; color: var(--ink);
  font-size: .8rem; font-weight: 700;
  padding: .5em .8em; border-radius: 100px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--line);
  animation: float 4s ease-in-out infinite;
}
.chip i { color: var(--green); }
.chip--a { top: 5%; left: -5%; animation-delay: 0s; }
.chip--b { top: 44%; right: -6%; animation-delay: .8s; }
.chip--b i { color: var(--red); }
.chip--c { bottom: 5%; left: 3%; animation-delay: 1.6s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* =========================================================
   SECTIONS
   ========================================================= */
.section { padding: clamp(3rem, 7.5vw, 6.5rem) 0; }
.section--tint { background: var(--paper-2); }

/* ---- benefit cards ---- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.card {
  position: relative; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2.1rem 1.7rem 1.9rem;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: linear-gradient(90deg, var(--green), var(--leaf));
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card__no {
  position: absolute; top: 1.2rem; right: 1.4rem;
  font-family: var(--mono); font-size: 1.5rem; font-weight: 700; color: var(--line);
}
.card__ico {
  display: grid; place-items: center; width: 54px; height: 54px;
  background: var(--leaf-soft); color: var(--green);
  border-radius: 16px; font-size: 1.35rem; margin-bottom: 1.1rem;
  transition: background .35s, color .35s;
}
.card:hover .card__ico { background: var(--green); color: #fff; }
.card__title { font-size: 1.2rem; font-weight: 700; margin: 0 0 .5rem; letter-spacing: -.02em; }
.card__text { color: var(--muted); margin: 0; font-size: .96rem; }

/* =========================================================
   SPLIT (floated image + copy)
   ========================================================= */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split__copy .head__title { text-align: left; margin-top: 1rem; }

.split__art { position: relative; display: flex; justify-content: center; }

/* floating illustration with soft glow — no box, transparent PNG */
.float-art { position: relative; width: 100%; max-width: 460px; }
.float-art::before {
  content: ""; position: absolute; z-index: 0;
  left: 50%; top: 52%; transform: translate(-50%, -50%);
  width: 82%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(38,192,106,.22), transparent 68%);
  filter: blur(8px);
}
.float-art img {
  position: relative; z-index: 1; width: 100%;
  filter: drop-shadow(0 26px 34px rgba(12,122,84,.20));
  transition: transform .5s var(--ease);
}
.split__art:hover .float-art img { transform: translateY(-6px) scale(1.02); }

.badge-float {
  position: absolute; z-index: 3; bottom: 4%; right: 2%;
  display: inline-flex; align-items: center; gap: .45em;
  background: var(--green); color: #fff;
  font-size: .84rem; font-weight: 700;
  padding: .58em 1em; border-radius: 100px; box-shadow: var(--shadow-sm);
  animation: float 4.5s ease-in-out infinite;
}
.badge-float i { color: var(--leaf); }
.badge-float--alt { background: var(--red); bottom: auto; top: 4%; left: 2%; right: auto; }
.badge-float--alt i { color: #fff; }

/* ---- numbered steps ---- */
.steps { list-style: none; padding: 0; margin: 1.8rem 0 0; display: grid; gap: 1.3rem; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; align-items: start; }
.step__no {
  display: grid; place-items: center; width: 46px; height: 46px;
  font-family: var(--mono); font-weight: 700; font-size: 1.05rem;
  color: var(--green); background: var(--leaf-soft);
  border-radius: 14px;
}
.step__title { font-size: 1.12rem; font-weight: 700; margin: .15rem 0 .25rem; letter-spacing: -.02em; }
.step__text { color: var(--muted); margin: 0; font-size: .96rem; }

/* ---- checks list ---- */
.checks { list-style: none; padding: 0; margin: 1.5rem 0 1.8rem; display: grid; gap: .8rem; }
.checks li { display: flex; align-items: center; gap: .7em; font-weight: 500; }
.checks i { color: var(--leaf); font-size: 1.15rem; flex: none; }

/* =========================================================
   FINAL CTA
   ========================================================= */
.cta {
  margin: clamp(2rem, 5vw, 3.5rem) auto;
  width: min(90%, var(--maxw));
  border-radius: 32px; overflow: hidden;
  background: radial-gradient(80% 120% at 15% 0%, var(--green) 0%, var(--green-deep) 60%);
  position: relative;
}
.cta::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 24px 24px; opacity: .5;
  -webkit-mask-image: radial-gradient(70% 70% at 80% 100%, #000, transparent);
          mask-image: radial-gradient(70% 70% at 80% 100%, #000, transparent);
}
.cta__inner { position: relative; z-index: 1; text-align: center; padding: clamp(2.8rem, 7vw, 5rem) 1.5rem; color: #fff; }
.cta__title { font-size: clamp(1.9rem, 5vw, 3.2rem); font-weight: 900; letter-spacing: -.03em; line-height: 1.15; margin: 1rem 0 .8rem; }
.cta__title em { color: var(--leaf); }
.cta__sub { color: rgba(255,255,255,.85); font-size: 1.05rem; margin: 0 0 2rem; }
.cta__sub b { color: #fff; }
.cta .btn--primary { background: #fff; color: var(--green-deep); box-shadow: 0 16px 40px -14px rgba(0,0,0,.5); }
.cta .btn--primary:hover { background: var(--red); color: #fff; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { border-top: 1px solid var(--line); padding: 3rem 0 2rem; }
.footer__inner { width: min(90%, var(--maxw)); margin-inline: auto; text-align: center; }
.brand--foot { justify-content: center; margin-bottom: 1rem; }
.footer__note { color: var(--muted); font-size: .85rem; max-width: 620px; margin: 0 auto 1.4rem; line-height: 1.7; }
.footer__links { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: .6rem; margin-bottom: 1rem; }
.footer__links button {
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: .9rem; color: var(--ink); font-weight: 500;
  padding: .2em .1em; transition: color .25s;
}
.footer__links button:hover { color: var(--green); text-decoration: underline; }
.footer__links span { color: var(--line); }
.footer__copy { color: var(--muted); font-size: .8rem; margin: 0; }

/* =========================================================
   FIXED CTA (항상 노출, PC/모바일 중앙)
   ========================================================= */
.fixed-cta {
  position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%);
  z-index: 60; width: max-content; max-width: calc(100% - 28px);
}
.btn--fixed {
  --pad: 1em 1.9em; font-size: 1.05rem;
  box-shadow: 0 18px 40px -12px rgba(12,122,84,.9);
  animation: bob 2.8s ease-in-out infinite;
}
.btn--fixed::after { animation: shine 3.4s var(--ease) 1s infinite; }
.btn--fixed .fa-arrow-right { transition: transform .3s var(--ease); }
.btn--fixed:hover .fa-arrow-right { transform: translateX(4px); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

/* =========================================================
   MODAL
   ========================================================= */
.modal { position: fixed; inset: 0; z-index: 100; display: none; }
.modal.open { display: block; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(12,36,26,.55); backdrop-filter: blur(3px); animation: fade .3s var(--ease); }
.modal__panel {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  width: min(92%, 560px); max-height: 82vh; overflow-y: auto;
  background: #fff; border-radius: 24px; padding: 2.4rem;
  box-shadow: 0 40px 80px -20px rgba(0,0,0,.5);
  animation: pop .35s var(--ease);
}
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { opacity: 0; transform: translate(-50%,-46%) scale(.96); } }
.modal__close {
  position: absolute; top: 1.1rem; right: 1.1rem;
  width: 38px; height: 38px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--paper-2); color: var(--ink); font-size: 1rem; transition: background .25s, color .25s;
}
.modal__close:hover { background: var(--red); color: #fff; }
.modal__title { font-size: 1.4rem; font-weight: 900; letter-spacing: -.02em; margin: 0 0 1.2rem; }
.modal__body { color: var(--muted); font-size: .95rem; line-height: 1.8; }
.modal__body h4 { color: var(--ink); font-size: 1rem; margin: 1.4rem 0 .4rem; }
.modal__body p { margin: 0 0 .6rem; }

/* =========================================================
   REVEAL
   ========================================================= */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 2.4rem; text-align: center; }
  .hero__art { order: -1; width: 100%; max-width: 400px; margin: 0 auto; }
  .hero__lead { margin-inline: auto; }
  .hero__cta { justify-content: center; }
  .hero__stats { justify-content: center; gap: 1.6rem; }

  .cards { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .card { text-align: left; }

  .split { grid-template-columns: 1fr; gap: 1.8rem; }
  .split__art { order: -1; }   /* image always on top on mobile */
  .split__copy { text-align: center; }
  .split__copy .head__title, .head__sub--left { text-align: center; }
  .split__copy .eyebrow { margin-inline: auto; }
  .float-art { max-width: 340px; }
  .steps { max-width: 420px; margin-inline: auto; text-align: left; }
  .checks { max-width: 340px; margin-inline: auto; }
  .checks li { justify-content: flex-start; }
}

@media (max-width: 560px) {
  body { padding-bottom: 86px; }
  .hero { padding-top: 2.4rem; }
  .hero__title { font-size: clamp(2rem, 9vw, 2.8rem); }
  .hero__cta .btn { flex: 1 1 100%; }
  .hero__stats { gap: 1.1rem; width: 100%; }
  .hero__stats li { flex: 1; }
  .chip { font-size: .72rem; padding: .42em .7em; }
  .chip--a { left: -2%; } .chip--b { right: -2%; } .chip--c { left: 0; }

  .section { padding: 3rem 0; }
  .card { padding: 1.8rem 1.5rem; }
  .float-art { max-width: 280px; }
  .badge-float { font-size: .78rem; padding: .5em .85em; }

  .btn--fixed { --pad: .9em 1.5em; font-size: .98rem; }
  .btn--fixed span { }
  .modal__panel { padding: 1.8rem 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}