html, body { margin: 0; min-height: 100%; background: #fff8ef; scrollbar-width: none; }
body::-webkit-scrollbar { display: none; }
*, *::before, *::after { box-sizing: border-box; }
:root { --cream: #fff8ef; --ink: #2b2340; --ink-soft: #6e6585; --coral: #ff7f6e; --butter: #ffd36e; --mint: #8edcc2; --sky: #9ccbff; --lilac: #cdb6ff; --line: rgba(43,35,64,.12); }
.lh { position: relative; min-height: 100svh; overflow: hidden; color: var(--ink); background: var(--cream); font-family: 'Nunito', system-ui, sans-serif; }
.lh-sfx { display: none; }
.lh-grain { position: fixed; inset: 0; z-index: 30; pointer-events: none; background: url(../assets/grain.svg); }
.lh-blobs { position: fixed; inset: 0; z-index: 0; pointer-events: none; filter: blur(40px); opacity: .55; }
.lh-blob { position: absolute; border-radius: 50%; animation: lh-blob 18s ease-in-out infinite alternate; }
.lh-blob--a { width: 300px; height: 300px; background: var(--butter); top: -80px; left: -90px; }
.lh-blob--b { width: 280px; height: 280px; background: var(--coral); top: 40%; right: -120px; opacity: .55; animation-duration: 22s; }
.lh-blob--c { width: 320px; height: 320px; background: var(--mint); bottom: -120px; left: -60px; opacity: .6; animation-duration: 26s; }
@keyframes lh-blob { from { translate: 0 0; scale: 1; } to { translate: 40px 30px; scale: 1.15; } }
.lh-floaters { position: fixed; inset: 0; z-index: 25; pointer-events: none; overflow: hidden; }
.lh-float { position: absolute; bottom: -40px; font-size: 26px; will-change: transform; }

/* gate */
.lh-gate { position: fixed; inset: 0; z-index: 20; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; padding: 30px 22px;
           text-align: center; background: radial-gradient(80% 60% at 50% 40%, #fff1e6 0%, #ffe6dc 55%, #fbd9d2 100%); }
.lh-listen { margin: 0; font-family: 'Caveat', cursive; font-size: 30px; color: var(--ink-soft); }
.lh-monitor { width: min(88vw, 360px); padding: 14px 14px 10px; border-radius: 22px; background: #1d1828;
              box-shadow: 0 24px 50px -18px rgba(43,35,64,.55), inset 0 0 0 1px rgba(255,255,255,.06); }
.lh-monitor-top { display: flex; align-items: center; gap: 8px; font: 700 11px 'Nunito', sans-serif; letter-spacing: .18em; color: rgba(255,255,255,.55); }
.lh-rec { width: 7px; height: 7px; border-radius: 50%; background: #ff5a6a; box-shadow: 0 0 8px #ff5a6a; animation: lh-blink 1.2s steps(2) infinite; }
@keyframes lh-blink { 50% { opacity: .2; } }
.lh-bpm { margin-left: auto; color: #ffb3a8; letter-spacing: .06em; font-size: 13px; }
.lh-bpm b { color: var(--coral); display: inline-block; }
.lh-ecg { display: block; width: 100%; height: 96px; margin-top: 6px; overflow: hidden; }
.lh-ecg path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.lh-ecg-line { stroke: #ff8c7a; stroke-width: 2.4; }
.lh-ecg-glow { stroke: rgba(255,140,122,.35); stroke-width: 8; filter: blur(3px); }
.lh-holdbtn { position: relative; width: 132px; height: 132px; margin-top: 6px; padding: 0; border: 0; background: none; cursor: pointer;
              -webkit-tap-highlight-color: transparent; touch-action: none; user-select: none; -webkit-user-select: none; }
.lh-ring { position: absolute; inset: 0; width: 100%; height: 100%; rotate: -90deg; }
.lh-ring circle { fill: none; stroke-width: 6; }
.lh-ring-bg { stroke: rgba(255,127,110,.18); }
.lh-ring-fg { stroke: var(--coral); stroke-linecap: round; stroke-dasharray: 339.3; stroke-dashoffset: 339.3; }
.lh-holdheart { position: absolute; left: 50%; top: 50%; width: 64px; margin: -30px 0 0 -32px; fill: var(--coral); filter: drop-shadow(0 8px 14px rgba(255,127,110,.45)); }
.lh-hint { margin: 0; font-size: 13px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-soft); }
.lh-skip, .lh-reveal { padding: 6px 14px; border: 0; border-radius: 999px; background: transparent; color: var(--ink-soft); font: 600 13px 'Nunito', sans-serif; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.lh-burst { position: absolute; inset: 0; display: grid; place-items: center; padding: 20px; pointer-events: none; opacity: 0; }
.lh-burst-text { font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; font-size: clamp(50px, 15vw, 96px); line-height: .95; letter-spacing: -.03em; color: var(--ink); }
.lh-burst-text .ch, .lh-word .ch { display: inline-block; }
.lh-burst-text .wd, .lh-word .wd { display: inline-block; white-space: nowrap; }
.lh.is-open .lh-gate { pointer-events: none; }

/* content */
.lh-content { position: relative; z-index: 2; visibility: hidden; }
.lh.is-open .lh-content { visibility: visible; }
section { position: relative; }
.lh-hero { min-height: 92svh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 70px 20px 40px; text-align: center; }
.lh-word { margin: 0; font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; font-size: clamp(84px, 27vw, 190px); line-height: .88; letter-spacing: -.045em; }
.lh-word .ch:nth-child(5n+1) { color: var(--coral); } .lh-word .ch:nth-child(5n+2) { color: #f2b73a; } .lh-word .ch:nth-child(5n+3) { color: #5fc4a3; }
.lh-word .ch:nth-child(5n+4) { color: #6fa9f0; } .lh-word .ch:nth-child(5n) { color: #a98be8; }
.lh-for { margin: 22px 0 0; font-family: 'Bricolage Grotesque', sans-serif; font-weight: 600; font-size: 21px; }
.lh-scribble { display: inline-flex; align-items: flex-end; gap: 4px; margin: 14px 0 0; font-family: 'Caveat', cursive; font-size: 28px; color: var(--ink); rotate: -4deg; }
.lh-scribble svg { width: 54px; margin-bottom: 18px; }

.lh-photo-sec { padding: 40px 20px 70px; display: flex; justify-content: center; }
.lh-polaroid { position: relative; width: min(78vw, 300px); margin: 0; padding: 14px 14px 18px; background: #fff; rotate: -3deg;
               box-shadow: 0 2px 0 rgba(0,0,0,.04), 0 30px 50px -20px rgba(43,35,64,.4); }
.lh-photo { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; background: #14141c url(../assets/sono.svg) center / cover; }
.lh-polaroid figcaption { margin-top: 12px; text-align: center; font-family: 'Caveat', cursive; font-size: 27px; }
.lh-tape { position: absolute; top: -14px; width: 92px; height: 28px; }
.lh-tape--l { left: -14px; rotate: -24deg; } .lh-tape--r { right: -14px; rotate: 22deg; }
.lh-sticker { position: absolute; font-size: 38px; line-height: 1; }
.lh-sticker--star { color: var(--butter); top: 26px; right: 12%; rotate: 14deg; text-shadow: 0 6px 12px rgba(242,183,58,.4); }
.lh-sticker--heart { color: var(--coral); bottom: 50px; left: 10%; rotate: -16deg; text-shadow: 0 6px 12px rgba(255,127,110,.4); }

.lh-sec-title { margin: 0 0 18px; font-family: 'Caveat', cursive; font-size: 32px; text-align: center; }
.lh-scratch-sec { padding: 30px 22px 70px; text-align: center; }
.lh-scratch { position: relative; width: min(86vw, 340px); height: 200px; margin: 0 auto; border-radius: 26px; overflow: hidden;
              box-shadow: 0 26px 46px -20px rgba(43,35,64,.45); touch-action: none; }
.lh-scratch-under { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
                    padding: 18px 28px 30px; text-align: center; background: linear-gradient(140deg, #fff 0%, #fff4e4 100%); }
.lh-sc-day { font-weight: 700; font-size: 13px; letter-spacing: .26em; text-transform: uppercase; color: var(--ink-soft); }
.lh-sc-date { max-width: 100%; font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; font-size: clamp(28px, 9.5vw, 42px); letter-spacing: -.02em; color: var(--coral); line-height: 1.05; overflow-wrap: anywhere; }
.lh-sc-time { font-family: 'Bricolage Grotesque', sans-serif; font-weight: 600; font-size: 20px; }
.lh-stamp { position: absolute; right: 14px; bottom: 12px; padding: 3px 10px; border: 2px solid #5fc4a3; border-radius: 8px; color: #3aa883; rotate: -10deg;
            font-family: 'Caveat', cursive; font-size: 20px; opacity: 0; }
.lh-foil { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.lh-scratch.is-revealed .lh-stamp { opacity: 1; transition: opacity .4s ease .3s; }

.lh-where { padding: 20px 24px 70px; text-align: center; }
.lh-feet { position: relative; height: 120px; width: min(100%, 340px); margin: 0 auto 10px; }
.lh-foot { position: absolute; width: 18px; opacity: 0; }
.lh-foot--1 { left: 4%; top: 78px; rotate: 70deg; } .lh-foot--2 { left: 14%; top: 92px; rotate: 80deg; }
.lh-foot--3 { left: 27%; top: 66px; rotate: 60deg; } .lh-foot--4 { left: 38%; top: 82px; rotate: 72deg; }
.lh-foot--5 { left: 51%; top: 52px; rotate: 58deg; } .lh-foot--6 { left: 62%; top: 66px; rotate: 66deg; }
.lh-foot--7 { left: 75%; top: 34px; rotate: 50deg; } .lh-foot--8 { left: 86%; top: 46px; rotate: 60deg; }
.lh-address { margin: 0 auto; max-width: 320px; font-family: 'Bricolage Grotesque', sans-serif; font-weight: 700; font-size: 30px; line-height: 1.15; letter-spacing: -.02em; }

.lh-love { padding: 30px 22px 60px; text-align: center; }
.lh-lovebtn { width: 104px; height: 104px; padding: 22px; border: 0; border-radius: 50%; background: #fff; cursor: pointer; -webkit-tap-highlight-color: transparent;
              box-shadow: 0 18px 34px -12px rgba(255,127,110,.6), inset 0 0 0 3px rgba(255,127,110,.25); }
.lh-lovebtn svg { width: 100%; fill: var(--coral); }
.lh-love-count { margin: 14px 0 0; font-family: 'Caveat', cursive; font-size: 24px; color: var(--ink-soft); }
.lh-registry, .lh-note { padding: 10px 26px 10px; text-align: center; }
.lh-registry p, .lh-note p { margin: 0 auto; max-width: 340px; padding: 16px 0; border-top: 1px dashed rgba(43,35,64,.2); font-size: 15px; line-height: 1.7; color: var(--ink-soft); }
.lh-close { padding: 60px 24px 100px; text-align: center; }
.lh-closing { margin: 0; font-family: 'Caveat', cursive; font-size: clamp(38px, 11vw, 56px); line-height: 1.05; rotate: -3deg; }
.lh-sign { margin: 18px 0 0; font-weight: 700; font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-soft); }

@media (min-width: 768px) { .lh-polaroid { width: 340px; } .lh-scratch { width: 420px; height: 230px; } }
@media (prefers-reduced-motion: reduce) { .lh-blob, .lh-rec { animation: none; } .lh-foot { opacity: 1; } .lh-foil { display: none; } }

/* card */
.lh-card { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 22px 16px; border-radius: 16px; background: #fff8ef; color: #2b2340; text-align: center; font-family: 'Nunito', sans-serif; }
.lh-card-date { font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; font-size: 46px; line-height: 1; color: #ff7f6e; }
.lh-card-month { font-size: 10px; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; }
.lh-card-title { margin: 6px 0 0; font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; font-size: 26px; }