/* Number Islands — "Tidewater" for the web. Same palette as Theme.swift. */
:root {
  --sea-deep: #0D2630; --sea-shallow: #144252; --sea-night: #081B22; --channel: #0F3340;
  --sand: #F4EAD3; --sand-shade: #E6D7B6; --surf: #F2FBF8; --surf-glow: #5FD0C0;
  --ink: #15303A; --ink-player: #1C6E86;
  --lighthouse: #F4B544; --focus: #FFC233; --ember: #D2513A;
  --seafoam: #9ED9CB; --amber: #F3C77E; --lilac: #BBA8E2; --coral: #F2A08F; --sky: #A6C8EA; --lichen: #CADB8C;
  --text: var(--sand); --muted: rgba(244, 234, 211, .74); --faint: rgba(244, 234, 211, .5);
  --card: rgba(244, 234, 211, .06); --card-line: rgba(244, 234, 211, .12);
  --radius: 22px; --maxw: 1180px;
  --font: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Noto Sans Devanagari", "Arial Rounded MT Bold", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }
body {
  margin: 0; background: var(--sea-night); color: var(--text); font-family: var(--font);
  font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--lighthouse); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 8px; }
.wrap { width: min(var(--maxw), 100% - 32px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--lighthouse); color: var(--ink); padding: 10px 16px; border-radius: 12px; font-weight: 800; }
.skip:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 12px 22px; border-radius: 999px; border: 0; cursor: pointer; font-weight: 800; font-size: 1rem; letter-spacing: .01em; text-decoration: none !important; transition: transform .18s ease, box-shadow .25s ease, background .2s; white-space: nowrap; }
.btn:active { transform: scale(.97); }
.btn-gold { background: linear-gradient(180deg, #FFD36A, var(--lighthouse)); color: var(--ink); box-shadow: 0 8px 28px -8px rgba(244, 181, 68, .7), inset 0 1px 0 rgba(255,255,255,.55); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 14px 36px -10px rgba(244, 181, 68, .85), inset 0 1px 0 rgba(255,255,255,.55); }
.btn-glass { background: rgba(244, 234, 211, .12); color: var(--sand); border: 1px solid rgba(244, 234, 211, .18); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.btn-glass:hover { background: rgba(244, 234, 211, .18); }
.btn-store { background: #000; color: #fff; border: 1px solid rgba(255,255,255,.28); border-radius: 14px; padding: 10px 20px; min-height: 56px; }
.btn-store small { display: block; font-size: .7rem; font-weight: 600; opacity: .8; line-height: 1.1; }
.btn-store span { display: block; font-size: 1.15rem; line-height: 1.15; }
.btn-store svg { width: 26px; height: 26px; flex: none; }
.btn-store[aria-disabled="true"] { cursor: default; }

/* ---------- Header ---------- */
.site-head { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .3s, box-shadow .3s, backdrop-filter .3s; }
.site-head.scrolled, .site-head.solid { background: rgba(8, 27, 34, .78); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); box-shadow: 0 1px 0 rgba(244,234,211,.08); }
.head-row { display: flex; align-items: center; gap: 16px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--sand); font-weight: 900; font-size: 1.1rem; text-decoration: none !important; }
.brand img { width: 36px; height: 36px; border-radius: 9px; box-shadow: 0 2px 10px rgba(0,0,0,.35); }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { color: var(--muted); font-weight: 700; font-size: .95rem; padding: 8px 12px; border-radius: 999px; text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--sand); background: rgba(244,234,211,.08); }
.head-actions { display: flex; align-items: center; gap: 10px; }
.lang { position: relative; }
.lang-btn { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--card-line); background: rgba(244,234,211,.06); cursor: pointer; font-weight: 700; font-size: .9rem; }
.lang-btn svg { width: 18px; height: 18px; opacity: .85; }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 180px; padding: 6px; margin: 0; list-style: none; border-radius: 16px; background: rgba(13, 38, 48, .97); border: 1px solid var(--card-line); box-shadow: 0 20px 50px rgba(0,0,0,.45); opacity: 0; transform: translateY(-6px) scale(.98); pointer-events: none; transition: .18s ease; }
.lang.open .lang-menu { opacity: 1; transform: none; pointer-events: auto; }
.lang-menu button { width: 100%; text-align: left; display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border: 0; background: none; border-radius: 10px; cursor: pointer; font-weight: 700; }
.lang-menu button:hover { background: rgba(244,234,211,.08); }
.lang-menu button[aria-checked="true"]::after { content: "✓"; color: var(--lighthouse); }
.head-cta { min-height: 40px; padding: 8px 16px; font-size: .92rem; }
.menu-btn { display: none; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--card-line); background: rgba(244,234,211,.06); cursor: pointer; }
.menu-btn span { display: block; width: 18px; height: 2px; background: var(--sand); margin: 4px auto; border-radius: 2px; transition: .25s; }
@media (max-width: 900px) {
  .nav { position: fixed; inset: 68px 0 auto; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 16px 20px; background: rgba(8,27,34,.97); border-bottom: 1px solid var(--card-line); transform: translateY(-12px); opacity: 0; visibility: hidden; transition: transform .3s ease, opacity .3s, visibility .3s; margin: 0; }
  .nav a { padding: 14px 14px; font-size: 1.05rem; }
  body.menu-open .nav { transform: none; opacity: 1; visibility: visible; }
  .menu-btn { display: block; }
  .head-actions { margin-left: auto; }
  .head-cta { display: none; }
  .brand span { display: none; }
  body.menu-open .menu-btn span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  body.menu-open .menu-btn span:nth-child(2) { opacity: 0; }
  body.menu-open .menu-btn span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: grid; align-items: center; overflow: hidden; isolation: isolate; padding: 110px 0 80px; }
.hero-art { position: absolute; inset: -8% -2% -2%; z-index: -3; background: #0D2630 url("../img/hero-wide.webp") 62% 50% / cover no-repeat; will-change: transform; }
@media (max-width: 900px) { .hero-art { background-image: url("../img/hero.webp"); background-position: center 38%; } }
@media (max-width: 700px) { .hero-art { background-image: url("../img/hero-sm.webp"); } }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background:
  radial-gradient(120% 70% at 50% 0%, rgba(8,27,34,.0) 0%, rgba(8,27,34,.35) 60%, rgba(8,27,34,.85) 100%),
  linear-gradient(180deg, rgba(8,27,34,.45) 0%, rgba(8,27,34,.12) 35%, rgba(8,27,34,.55) 75%, var(--sea-night) 100%); }
#seaCanvas { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px; background: rgba(8,27,34,.45); border: 1px solid rgba(244,234,211,.16); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); font-weight: 800; font-size: .85rem; letter-spacing: .04em; text-transform: uppercase; color: var(--amber); }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--lighthouse); box-shadow: 0 0 12px var(--lighthouse); animation: beacon 2.4s ease-in-out infinite; }
@keyframes beacon { 50% { opacity: .35; box-shadow: 0 0 2px var(--lighthouse); } }
.wordmark { width: min(640px, 100%); margin: 22px 0 6px -1.5%; filter: drop-shadow(0 12px 30px rgba(0,0,0,.45)); animation: bob 6s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(-8px) rotate(-.4deg); } }
.hero h1 { margin: 0; }
.hero-tag { font-size: clamp(1.1rem, 1.6vw, 1.32rem); color: rgba(244,234,211,.92); max-width: 34ch; margin: 10px 0 28px; text-shadow: 0 2px 16px rgba(0,0,0,.5); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.pills { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 30px 0 0; padding: 0; list-style: none; color: var(--muted); font-weight: 700; font-size: .95rem; }
.pills li { display: flex; align-items: center; gap: 8px; }
.pills li::before { content: ""; width: 18px; height: 18px; border-radius: 6px; background: var(--seafoam); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/contain no-repeat; }
.scroll-cue { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--faint); font-size: .8rem; font-weight: 700; text-decoration: none !important; }
.scroll-cue i { width: 24px; height: 38px; border: 2px solid rgba(244,234,211,.4); border-radius: 14px; position: relative; }
.scroll-cue i::after { content: ""; position: absolute; left: 50%; top: 7px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--sand); animation: wheel 1.8s ease-in-out infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(-3px); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(10px); } }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 36px; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .wordmark { margin-inline: auto; }
  .hero-ctas, .pills { justify-content: center; }
  .scroll-cue { display: none; }
}

/* ---------- Phone ---------- */
.phone { position: relative; width: min(340px, 82vw, max(260px, calc((100svh - 150px) * .468))); aspect-ratio: 9 / 19.2; margin-inline: auto; border-radius: 52px; padding: 12px; background: linear-gradient(145deg, #2a3e46, #0b1c22 40%, #23363d); box-shadow: 0 0 0 2px rgba(255,255,255,.07), 0 40px 80px -20px rgba(0,0,0,.7), 0 0 120px -30px rgba(95,208,192,.35), inset 0 0 2px rgba(255,255,255,.3); }
.phone::before { content: ""; position: absolute; top: 22px; left: 50%; width: 30%; height: 26px; margin-left: -15%; border-radius: 20px; background: #000; z-index: 3; }
.screen { position: relative; height: 100%; border-radius: 41px; overflow: hidden; background: linear-gradient(180deg, var(--sea-shallow), var(--sea-deep)); display: flex; flex-direction: column; }
.screen-bg { position: absolute; inset: 0; background: url("../img/hero-sm.webp") center / cover; opacity: .55; }
.screen-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,38,48,.3), rgba(13,38,48,.75) 45%, rgba(13,38,48,.85)); }
.screen > *:not(.screen-bg) { position: relative; }
.status { display: flex; justify-content: space-between; padding: 16px 28px 0; font-size: .78rem; font-weight: 800; height: 44px; }
.status .bat { width: 22px; height: 11px; border: 1.5px solid currentColor; border-radius: 3px; position: relative; opacity: .9; }
.status .bat::after { content: ""; position: absolute; inset: 1.5px 4px 1.5px 1.5px; background: currentColor; border-radius: 1px; }
.game-head { padding: 8px 18px 6px; }
.game-title { display: flex; align-items: center; gap: 8px; font-weight: 900; font-size: 1rem; justify-content: center; position: relative; }
.game-title .chev { position: absolute; left: 0; color: var(--lighthouse); font-size: 1.2rem; }
.game-meta { display: flex; justify-content: space-between; font-size: .72rem; font-weight: 700; color: var(--muted); margin-top: 8px; }
.phone-board { padding: 6px 14px; }
.board-canvas { display: block; width: 100%; aspect-ratio: 1; touch-action: none; border-radius: 16px; }
.phone-caption { margin: 8px 16px 0; padding: 12px 14px; border-radius: 16px; background: rgba(244,234,211,.08); border: 1px solid rgba(244,234,211,.1); min-height: 92px; font-size: .78rem; line-height: 1.4; }
.phone-caption b { display: block; color: var(--lighthouse); font-size: .86rem; margin-bottom: 3px; }
.phone-caption p { margin: 0; color: var(--muted); transition: opacity .3s; }
.toolbar { display: flex; justify-content: space-around; margin: auto 14px 26px; padding-top: 10px; }
.toolbar span { display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: .62rem; font-weight: 700; color: var(--muted); }
.toolbar span i { width: 34px; height: 30px; border-radius: 10px; background: rgba(244,234,211,.1); display: grid; place-items: center; font-style: normal; font-size: .9rem; color: var(--sand); }
.hero-phone { animation: float 7s ease-in-out infinite; transform-style: preserve-3d; }
@keyframes float { 50% { transform: translateY(-14px); } }

/* ---------- Sections ---------- */
section { position: relative; }
.section { padding: clamp(80px, 11vw, 140px) 0; }
.kicker { display: inline-block; font-weight: 900; font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; color: var(--seafoam); margin-bottom: 12px; }
.h2 { hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; font-size: clamp(2rem, 4.4vw, 3.4rem); line-height: 1.08; margin: 0 0 16px; font-weight: 900; letter-spacing: -.02em; text-wrap: balance; }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.22rem); color: var(--muted); max-width: 60ch; margin: 0; text-wrap: pretty; }
.center { text-align: center; } .center .lede { margin-inline: auto; }
.grad { background: linear-gradient(90deg, var(--seafoam), var(--sky) 40%, var(--lilac) 70%, var(--coral)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* Waves between sections */
.wave { position: absolute; left: 0; right: 0; height: 90px; pointer-events: none; }
.wave svg { width: 200%; height: 100%; animation: drift 18s linear infinite; }
@keyframes drift { to { transform: translateX(-50%); } }

/* ---------- How it works ---------- */
.how { background: linear-gradient(180deg, var(--sea-night), #0B232C); }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 56px; }
.how-card { position: relative; padding: 28px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--card-line); overflow: hidden; transition: transform .35s ease, border-color .35s; }
.how-card:hover { transform: translateY(-6px); border-color: rgba(244,234,211,.25); }
.how-card .num { position: absolute; right: 18px; top: 8px; font-size: 5.5rem; font-weight: 900; color: rgba(244,234,211,.05); line-height: 1; }
.how-card h3 { font-size: 1.35rem; margin: 18px 0 8px; }
.how-card p { margin: 0; color: var(--muted); }
.mini { width: 100%; max-width: 220px; aspect-ratio: 1; }
@media (max-width: 900px) { .how-grid { grid-template-columns: 1fr; max-width: 520px; margin-inline: auto; } }

/* ---------- Learn (interactive tutorial) ---------- */
.learn { background: radial-gradient(80% 60% at 70% 30%, rgba(95,208,192,.12), transparent 70%), linear-gradient(180deg, #0B232C, var(--sea-deep)); overflow: hidden; }
.learn-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 64px; align-items: center; margin-top: 10px; }
.steps { list-style: none; margin: 36px 0 0; padding: 0; display: grid; gap: 8px; counter-reset: s; }
.steps button { width: 100%; display: flex; align-items: center; gap: 14px; padding: 12px 16px; border-radius: 16px; border: 1px solid transparent; background: transparent; cursor: pointer; text-align: left; font-weight: 800; color: var(--faint); transition: .25s; }
.steps button::before { counter-increment: s; content: counter(s); flex: none; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: rgba(244,234,211,.08); font-size: .9rem; transition: .25s; }
.steps button:hover { color: var(--sand); background: rgba(244,234,211,.04); }
.steps button.done { color: var(--muted); }
.steps button.done::before { background: rgba(158,217,203,.25); color: var(--seafoam); }
.steps button[aria-current="step"] { color: var(--sand); background: rgba(244,234,211,.07); border-color: rgba(244,181,68,.35); }
.steps button[aria-current="step"]::before { background: var(--lighthouse); color: var(--ink); box-shadow: 0 0 18px rgba(244,181,68,.6); }
.kbd-tip { margin-top: 22px; font-size: .9rem; color: var(--faint); }
.tut-phone { width: min(390px, 92vw, max(300px, calc((100svh - 96px) * .468))); }
.tut { height: 100%; display: flex; flex-direction: column; padding: 50px 18px 22px; gap: 10px; }
.tut-top { display: flex; align-items: center; gap: 10px; min-height: 36px; }
.icon-btn { width: 34px; height: 34px; border-radius: 50%; border: 0; background: rgba(244,234,211,.12); color: var(--sand); cursor: pointer; display: grid; place-items: center; flex: none; }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn[hidden] { display: none; }
.dots { flex: 1; display: flex; justify-content: center; gap: 6px; }
.dots i { height: 7px; width: 7px; border-radius: 4px; background: rgba(244,234,211,.25); transition: width .3s, background .3s; }
.dots i.on { background: var(--lighthouse); }
.dots i.cur { width: 18px; }
.skip-btn { border: 0; background: none; color: rgba(244,234,211,.7); font-weight: 700; cursor: pointer; padding: 6px; min-width: 34px; font-size: .9rem; }
.tut-body { flex: 1; display: flex; flex-direction: column; min-height: 0; position: relative; }
.tut-page { flex: 1; display: flex; flex-direction: column; animation: pageIn .45s cubic-bezier(.2,.7,.2,1); min-height: 0; }
@keyframes pageIn { from { opacity: 0; transform: translateX(24px); } }
.tut-page.centered { align-items: center; justify-content: center; text-align: center; gap: 14px; }
.tut-page h3 { font-size: 1.3rem; margin: 0 0 4px; line-height: 1.2; }
.tut-page.centered h3 { font-size: 1.8rem; }
.tut-text { position: relative; min-height: 92px; font-size: .9rem; line-height: 1.42; }
.tut-text .ins, .tut-text .ok { transition: opacity .3s; }
.tut-text .ok { position: absolute; inset: 0 0 auto; color: var(--lighthouse); opacity: 0; font-weight: 700; }
.tut-text.solved .ins { opacity: 0; } .tut-text.solved .ok { opacity: 1; }
.tut-text .ins p { margin: 0; color: rgba(244,234,211,.88); }
.tut-text .ins small { display: block; margin-top: 5px; color: var(--faint); font-size: .8rem; }
.tut-board { width: 100%; max-width: 330px; margin: 4px auto 10px; position: relative; }
.tut-panel { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-top: auto; }
.pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; width: 100%; max-width: 290px; }
.pad button { min-height: 44px; border-radius: 12px; border: 0; background: rgba(244,234,211,.92); color: var(--ink); font-size: 1.35rem; font-weight: 600; cursor: pointer; transition: transform .1s, opacity .2s; font-family: var(--font); }
.pad button:active { transform: scale(.94); }
.pad button:disabled { opacity: .45; cursor: default; }
.link-btn { border: 0; background: none; color: var(--lighthouse); font-weight: 800; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; padding: 6px 10px; }
.link-btn svg { width: 16px; height: 16px; }
.tide-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 999px; border: 0; cursor: pointer; font-weight: 800; background: rgba(244,234,211,.14); color: var(--sand); font-size: .95rem; }
.tide-btn.prominent { background: var(--lighthouse); color: var(--ink); }
.tide-btn:disabled { opacity: .6; }
.hint-card { width: 100%; padding: 12px 14px; border-radius: 16px; background: rgba(8,27,34,.7); border: 1px solid rgba(244,181,68,.35); animation: pageIn .3s; font-size: .85rem; }
.hint-card b { color: var(--lighthouse); display: block; margin-bottom: 3px; font-size: .92rem; }
.hint-card p { margin: 0 0 10px; color: rgba(244,234,211,.88); }
.hint-card .row { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.hint-card .count { color: var(--faint); font-size: .75rem; font-weight: 700; }
.rules { list-style: none; margin: 4px 0; padding: 16px 18px; border-radius: 18px; background: rgba(244,234,211,.08); display: grid; gap: 12px; text-align: left; font-size: .9rem; }
.rules li { display: flex; gap: 12px; align-items: center; }
.rules svg { width: 22px; height: 22px; flex: none; color: var(--lighthouse); }
.sun { width: 64px; height: 64px; color: var(--lighthouse); filter: drop-shadow(0 0 18px rgba(244,181,68,.6)); }
.intro-art { width: 170px; height: 170px; border-radius: 26px; animation: bob 5s ease-in-out infinite; }
.confetti { position: absolute; inset: 0; pointer-events: none; overflow: visible; z-index: 4; }
.confetti i { position: absolute; width: 9px; height: 9px; border-radius: 2px; animation: pop 1.1s cubic-bezier(.2,.7,.3,1) forwards; }
@keyframes pop { 0% { transform: translate(0,0) rotate(0); opacity: 1; } 100% { transform: translate(var(--x), var(--y)) rotate(var(--r)); opacity: 0; } }
@media (max-width: 900px) {
  .learn-grid { grid-template-columns: 1fr; gap: 36px; }
  .learn-grid .steps { display: none; }
  .learn-copy { text-align: center; } .learn-copy .lede { margin-inline: auto; }
  .kbd-tip { display: none; }
}
@media (max-width: 420px) {
  .tut-phone { width: min(100%, max(320px, calc((100svh - 80px) * .468))); border-radius: 40px; padding: 8px; }
  .tut-phone .screen { border-radius: 33px; }
  .tut { padding: 44px 14px 18px; }
}

/* ---------- Islands ---------- */
.islands { background: linear-gradient(180deg, var(--sea-deep), #0A1F27); overflow: hidden; }
.region-track { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(270px, 1fr); gap: 20px; margin-top: 52px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 10px 2px 26px; scrollbar-width: thin; scrollbar-color: rgba(244,234,211,.25) transparent; }
.region { position: relative; scroll-snap-align: start; aspect-ratio: 3 / 4.3; border-radius: 28px; overflow: hidden; isolation: isolate; border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); transition: transform .5s cubic-bezier(.2,.7,.2,1), box-shadow .5s; box-shadow: 0 30px 60px -30px rgba(0,0,0,.8); transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); }
.region:hover { box-shadow: 0 40px 80px -30px rgba(0,0,0,.9), 0 0 60px -20px var(--accent); }
.region img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform 1.2s cubic-bezier(.2,.7,.2,1); }
.region:hover img { transform: scale(1.08); }
.region::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(8,27,34,0) 35%, rgba(8,27,34,.92) 100%); }
.region-info { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px; }
.tier { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: .75rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; background: var(--accent); color: var(--ink); }
.region h3 { font-size: 1.6rem; margin: 10px 0 2px; line-height: 1.1; }
.region p { margin: 0; color: var(--muted); font-size: .95rem; }
.region .lv { display: block; margin-top: 8px; font-weight: 800; font-size: .85rem; color: var(--accent); }
.difficulty { display: flex; gap: 4px; margin-top: 10px; }
.difficulty i { width: 22px; height: 6px; border-radius: 3px; background: rgba(244,234,211,.2); }
.difficulty i.on { background: var(--accent); }

/* ---------- Features ---------- */
.features { background: #0A1F27; }
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; margin-top: 56px; }
.feat { position: relative; grid-column: span 2; padding: 28px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--card-line); overflow: hidden; transition: border-color .3s, transform .3s; }
.feat:hover { border-color: rgba(244,234,211,.24); transform: translateY(-4px); }
.feat.wide { grid-column: span 3; }
.feat::before { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -90px; border-radius: 50%; background: radial-gradient(circle, var(--glow, rgba(95,208,192,.22)), transparent 70%); pointer-events: none; transition: transform .6s; }
.feat:hover::before { transform: scale(1.25); }
.feat h3 { font-size: 1.3rem; margin: 16px 0 8px; }
.feat p { margin: 0; color: var(--muted); }
.feat-icon { width: 64px; height: 64px; border-radius: 18px; object-fit: cover; box-shadow: 0 10px 24px -8px rgba(0,0,0,.6); }
.feat-sym { width: 64px; height: 64px; border-radius: 18px; display: grid; place-items: center; background: linear-gradient(145deg, color-mix(in srgb, var(--c) 35%, transparent), rgba(244,234,211,.04)); border: 1px solid color-mix(in srgb, var(--c) 40%, transparent); color: var(--c); }
.feat-sym svg { width: 32px; height: 32px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 64px; padding: 34px; border-radius: var(--radius); background: linear-gradient(135deg, rgba(158,217,203,.1), rgba(187,168,226,.08)); border: 1px solid var(--card-line); text-align: center; }
.stat b { display: block; font-size: clamp(2.2rem, 5vw, 3.4rem); line-height: 1; font-weight: 900; color: var(--sand); font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-weight: 700; }
@media (max-width: 900px) { .bento { grid-template-columns: 1fr 1fr; } .feat, .feat.wide { grid-column: span 2; } .stats { grid-template-columns: 1fr 1fr; } }

/* ---------- Badges marquee ---------- */
.badges { padding: clamp(70px, 9vw, 110px) 0; background: linear-gradient(180deg, #0A1F27, var(--sea-night)); overflow: hidden; }
.marquee { margin-top: 44px; display: flex; overflow: hidden; -webkit-mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-row { display: flex; gap: 22px; padding-right: 22px; animation: marquee 60s linear infinite; flex: none; }
.marquee:hover .marquee-row { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-100%); } }
.badge { flex: none; width: 170px; text-align: center; }
.badge img { width: 130px; height: 130px; margin: 0 auto 10px; object-fit: contain; filter: drop-shadow(0 12px 18px rgba(0,0,0,.45)); transition: transform .4s cubic-bezier(.2,.7,.2,1); }
.badge:hover img { transform: translateY(-6px) rotate(-4deg) scale(1.06); }
.badge b { display: block; font-size: .95rem; }
.badge span { display: block; font-size: .8rem; color: var(--faint); line-height: 1.35; margin-top: 2px; }

/* ---------- CTA ---------- */
.cta { position: relative; padding: clamp(90px, 12vw, 160px) 0; overflow: hidden; isolation: isolate; text-align: center; }
.cta-bg { position: absolute; inset: 0; z-index: -2; background: url("../img/region-bold.webp") center 40% / cover; transform: scale(1.1); }
.cta::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(70% 70% at 50% 50%, rgba(8,27,34,.55), rgba(8,27,34,.92)), linear-gradient(180deg, var(--sea-night), transparent 25%, transparent 75%, var(--sea-night)); }
.cta-icon { width: 120px; height: 120px; margin: 0 auto 26px; border-radius: 28px; box-shadow: 0 24px 60px -16px rgba(0,0,0,.8), 0 0 80px -10px rgba(95,208,192,.45); animation: bob 6s ease-in-out infinite; }
.cta .lede { margin: 0 auto 30px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.req { margin-top: 18px; color: var(--faint); font-size: .9rem; }

/* ---------- Footer ---------- */
.site-foot { background: #061419; border-top: 1px solid rgba(244,234,211,.06); padding: 54px 0 34px; color: var(--faint); font-size: .92rem; }
.foot-grid { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; align-items: flex-start; }
.foot-brand img { width: 200px; margin-bottom: 10px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.foot-links a { color: var(--muted); font-weight: 700; }
.foot-legal { margin-top: 34px; padding-top: 22px; border-top: 1px solid rgba(244,234,211,.06); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: .8rem; }

/* ---------- Inner pages (support, privacy) ---------- */
.page-hero { position: relative; padding: 150px 0 70px; overflow: hidden; isolation: isolate; }
.page-hero .bg { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center 45%; opacity: .5; }
.page-hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(8,27,34,.55), var(--sea-night)); }
.page-hero h1 { hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; font-size: clamp(2rem, 6vw, 4rem); line-height: 1.05; margin: 0 0 14px; font-weight: 900; letter-spacing: -.02em; }
.quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.quick a { display: flex; gap: 16px; align-items: center; padding: 20px; border-radius: 20px; background: rgba(8,27,34,.55); border: 1px solid var(--card-line); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); color: var(--sand); text-decoration: none; transition: transform .3s, border-color .3s; }
.quick a:hover { transform: translateY(-4px); border-color: rgba(244,181,68,.45); }
.quick .qi { flex: none; width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; background: rgba(244,181,68,.15); color: var(--lighthouse); }
.quick .qi svg { width: 26px; height: 26px; }
.quick b { display: block; font-size: 1.05rem; } .quick span { color: var(--muted); font-size: .9rem; }
@media (max-width: 800px) { .quick { grid-template-columns: 1fr; } }
.content { padding: 30px 0 100px; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
@media (max-width: 900px) { .content-grid { grid-template-columns: 1fr; } }
.panel { padding: 30px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--card-line); }
.panel h2 { margin: 0 0 16px; font-size: 1.6rem; }
.panel ol { margin: 0; padding-left: 1.3em; display: grid; gap: 12px; color: rgba(244,234,211,.9); }
.panel ol li::marker { color: var(--lighthouse); font-weight: 900; }
.note { color: var(--muted); font-size: .95rem; margin: 18px 0 0; }
.faq { display: grid; gap: 10px; }
.faq details { border-radius: 16px; background: rgba(244,234,211,.04); border: 1px solid var(--card-line); transition: background .25s, border-color .25s; }
.faq details[open] { background: rgba(244,234,211,.07); border-color: rgba(244,181,68,.3); }
.faq summary { list-style: none; cursor: pointer; padding: 16px 18px; font-weight: 800; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 12px; height: 12px; border-right: 2.5px solid var(--lighthouse); border-bottom: 2.5px solid var(--lighthouse); transform: rotate(45deg) translateY(-3px); transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.faq .ans { padding: 0 18px 18px; color: var(--muted); }
.contact-card { margin-top: 26px; padding: 34px; border-radius: 26px; text-align: center; background: radial-gradient(90% 120% at 50% 0%, rgba(244,181,68,.18), transparent 60%), var(--card); border: 1px solid rgba(244,181,68,.3); }
.contact-card h2 { margin: 0 0 10px; font-size: 1.8rem; }
.contact-card p { color: var(--muted); max-width: 60ch; margin: 0 auto 22px; }
.email { display: block; font-size: clamp(1.15rem, 3vw, 1.6rem); font-weight: 900; color: var(--sand); margin-bottom: 18px; word-break: break-all; }
.policy { max-width: 820px; }
.policy h2 { font-size: 1.35rem; margin: 34px 0 8px; }
.policy p, .policy li { color: rgba(244,234,211,.86); }
.policy ul { padding-left: 0; list-style: none; display: grid; gap: 14px; }
.policy ul li { position: relative; padding: 16px 18px 16px 54px; border-radius: 16px; background: rgba(244,234,211,.04); border: 1px solid var(--card-line); }
.policy ul li::before { content: ""; position: absolute; left: 18px; top: 18px; width: 22px; height: 22px; border-radius: 50%; background: var(--seafoam) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2315303A'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/15px no-repeat; }
.lead { font-size: 1.2rem; font-weight: 700; color: var(--sand) !important; }
.label-card { display: flex; gap: 18px; align-items: center; padding: 22px 24px; border-radius: 20px; background: rgba(8,27,34,.6); border: 1px solid rgba(158,217,203,.35); max-width: 520px; margin-top: 30px; }
.label-card .qi { flex: none; width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center; background: rgba(158,217,203,.18); color: var(--seafoam); }
.label-card .qi svg { width: 30px; height: 30px; }
.label-card b { display: block; font-size: 1.15rem; }
.label-card span { color: var(--muted); font-size: .92rem; }
.transl { margin-top: 18px; font-size: .88rem; color: var(--faint); font-style: italic; }
.updated { color: var(--faint); font-weight: 700; }

/* ---------- New art: floating isles & lighthouse ---------- */
.how, .features, .islands, .badges { overflow: hidden; }
.section > .wrap, .badges > .wrap, .badges > .marquee { position: relative; z-index: 1; }
.isle { position: absolute; z-index: 0; width: clamp(84px, 10vw, 160px); pointer-events: none; user-select: none; filter: drop-shadow(0 18px 22px rgba(0,0,0,.45)); opacity: .92; translate: 0 var(--py, 0px); }
.isle img { width: 100%; animation: isleBob var(--t, 9s) ease-in-out infinite; animation-delay: var(--delay, 0s); }
@keyframes isleBob { 0%, 100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-14px) rotate(2deg); } }
@media (max-width: 700px) { .isle { width: 70px; opacity: .7; } .isle.hide-sm { display: none; } }
.lh { position: relative; width: 150px; margin-top: 26px; }
.lh img { width: 100%; filter: drop-shadow(0 16px 20px rgba(0,0,0,.5)); }
.lh::after { content: ""; position: absolute; left: 38%; top: 20%; width: 46%; height: 30%; border-radius: 50%; background: radial-gradient(circle, rgba(255,210,110,.55), transparent 70%); animation: beam 3.2s ease-in-out infinite; pointer-events: none; }
@keyframes beam { 0%, 100% { opacity: .25; transform: scale(.85); } 50% { opacity: 1; transform: scale(1.15); } }
@media (max-width: 900px) { .lh { display: none; } }
.feat-icon.contain { object-fit: contain; box-shadow: none; filter: drop-shadow(0 8px 14px rgba(0,0,0,.5)); }
.contact-card .lh-top { width: 110px; margin: -10px auto 8px; filter: drop-shadow(0 14px 18px rgba(0,0,0,.5)); animation: bob 6s ease-in-out infinite; }
.nf-lh { width: 170px; margin: 0 auto 10px; filter: drop-shadow(0 14px 18px rgba(0,0,0,.5)); animation: bob 6s ease-in-out infinite; }

/* ---------- Printables ---------- */
.print-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 22px; margin-top: 34px; }
.print-card { display: flex; flex-direction: column; border-radius: 20px; background: var(--card); border: 1px solid var(--card-line); overflow: hidden; transition: transform .3s, border-color .3s, box-shadow .3s; }
.print-card:hover { transform: translateY(-5px); border-color: rgba(244,181,68,.4); box-shadow: 0 24px 50px -24px rgba(0,0,0,.8); }
.print-thumb { position: relative; background: #fff; aspect-ratio: 8.5 / 11; display: block; overflow: hidden; }
.print-thumb img { width: 100%; height: 100%; object-fit: cover; }
.print-thumb .no { position: absolute; left: 10px; top: 10px; padding: 3px 9px; border-radius: 999px; background: var(--ink); color: var(--sand); font-weight: 900; font-size: .8rem; }
.print-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.print-body b { font-size: 1.05rem; }
.print-body span { color: var(--muted); font-size: .88rem; }
.print-body .dl { margin-top: 10px; align-self: flex-start; min-height: 40px; padding: 8px 16px; font-size: .9rem; }
.print-tier { display: inline-block; align-self: flex-start; padding: 2px 9px; border-radius: 999px; font-size: .72rem; font-weight: 900; text-transform: uppercase; letter-spacing: .05em; background: var(--accent, var(--seafoam)); color: var(--ink); }
.print-tools { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 26px; }
.coming { opacity: .55; }
.coming .print-thumb { display: grid; place-items: center; background: rgba(244,234,211,.06); }
.coming .print-thumb img { width: 55%; height: auto; object-fit: contain; opacity: .7; }

/* ---------- Real screenshots ---------- */
.shots { background: linear-gradient(180deg, var(--sea-deep), var(--sea-deep)); overflow: hidden; }
.shot-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; margin-top: 50px; }
.shot { margin: 0; text-align: center; }
.shot-frame { border-radius: 38px; padding: 8px; background: linear-gradient(145deg, #2a3e46, #0b1c22 40%, #23363d); box-shadow: 0 30px 60px -24px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.06); transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.shot-frame img { border-radius: 31px; width: 100%; }
.shot:nth-child(even) .shot-frame { transform: translateY(34px); }
.shot:hover .shot-frame { transform: translateY(-8px) scale(1.02); }
.shot figcaption { margin-top: 18px; font-weight: 800; color: var(--muted); }
.shot:nth-child(even) figcaption { margin-top: 52px; }
@media (max-width: 900px) {
  .shot-track { grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: 62%; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 14px; }
  .shot { scroll-snap-align: center; }
  .shot:nth-child(even) .shot-frame { transform: none; } .shot:nth-child(even) figcaption { margin-top: 18px; }
}
/* Header: keep one line between tablet and desktop widths */
.nav a, .brand { white-space: nowrap; }
@media (min-width: 901px) and (max-width: 1180px) { .brand span { display: none; } .nav a { padding: 8px 9px; font-size: .9rem; } }

/* ---------- Articles ---------- */
.logbook { background: linear-gradient(180deg, var(--sea-night), #0A1F27); }
.art-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 40px; }
.art-grid.big { margin-top: 10px; }
@media (max-width: 900px) { .art-grid { grid-template-columns: 1fr; } }
.art-card { display: flex; flex-direction: column; border-radius: 22px; overflow: hidden; background: var(--card); border: 1px solid var(--card-line); color: var(--sand); text-decoration: none !important; transition: transform .35s, border-color .35s, box-shadow .35s; }
.art-card:hover { transform: translateY(-6px); border-color: rgba(244,181,68,.4); box-shadow: 0 26px 50px -26px rgba(0,0,0,.9); }
.art-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.art-card:hover img { transform: scale(1.05); }
.art-card-body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 6px; }
.art-card .tag { font-size: .75rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; color: var(--seafoam); }
.art-card b { font-size: 1.15rem; line-height: 1.25; }
.art-card-body span:not(.tag) { color: var(--muted); font-size: .92rem; }
.art-card.mini { position: relative; }
.art-card.mini .tag, .art-card.mini b { padding: 0 16px; } .art-card.mini .tag { padding-top: 14px; } .art-card.mini b { padding-bottom: 16px; font-size: 1rem; }
.art-hero { position: relative; padding: 140px 0 50px; overflow: hidden; isolation: isolate; }
.art-hero .bg { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center 45%; opacity: .45; }
.art-hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(8,27,34,.5), var(--sea-night)); }
.art-wrap { max-width: 760px; }
.art-hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.08; margin: 6px 0 14px; font-weight: 900; letter-spacing: -.02em; text-wrap: balance; }
.crumb { display: inline-block; margin-bottom: 18px; color: var(--muted); font-weight: 800; }
.byline { color: var(--faint); font-weight: 700; margin: 16px 0 0; }
.prose { font-size: 1.08rem; line-height: 1.75; color: rgba(244,234,211,.9); padding-bottom: 40px; }
.prose h2 { font-size: 1.6rem; line-height: 1.2; margin: 44px 0 12px; color: var(--sand); }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 20px; display: grid; gap: 8px; }
.prose li::marker { color: var(--lighthouse); font-weight: 900; }
.prose b { color: var(--sand); }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose .quote { border-left: 4px solid var(--lighthouse); padding: 10px 16px; background: rgba(244,181,68,.08); border-radius: 0 12px 12px 0; font-style: italic; color: var(--sand); }
.art-note { font-size: .9rem; color: var(--faint) !important; font-style: italic; margin-top: 30px !important; }
.art-fig { margin: 30px auto; text-align: center; }
.art-fig img { margin: 0 auto; border-radius: 20px; box-shadow: 0 24px 50px -24px rgba(0,0,0,.8); }
.art-fig.phone img { max-width: 300px; border-radius: 34px; }
.art-fig.sheet img { max-width: 360px; background: #fff; border-radius: 8px; }
.art-fig figcaption { margin-top: 12px; color: var(--faint); font-size: .9rem; }
.art-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px !important; }
.art-cta .btn { text-decoration: none !important; }
.table-wrap { overflow-x: auto; margin: 0 0 24px; border-radius: 16px; border: 1px solid var(--card-line); }
.steps-table, .prose table.simple { width: 100%; border-collapse: collapse; font-size: .92rem; line-height: 1.45; }
.steps-table th, .steps-table td, .simple th, .simple td { padding: 10px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--card-line); }
.steps-table th, .simple th { background: rgba(244,234,211,.08); color: var(--sand); }
.steps-table td:first-child { color: var(--lighthouse); font-weight: 900; width: 34px; }
.steps-table td:nth-child(2) { white-space: nowrap; color: var(--sand); }
.prose table.simple { margin: 0 0 24px; border: 1px solid var(--card-line); border-radius: 16px; overflow: hidden; }
.art-more { padding: 10px 0 90px; } .art-more h2 { font-size: 1.4rem; margin: 0; }