/* mizu.koiayame.com: one long page, a keynote's pace. System fonts only:
   nothing fetched from anyone else. */
:root {
  --ink: #0b1220;
  --paper: #fbfbfd;
  --muted: #6b7280;
  --deep: #0b1a2e;
  --deep-2: #0f2440;
  --water: #3d8bfd;
  --water-soft: #9cc3ff;
  --line: rgba(15, 23, 42, 0.08);
  --radius: 22px;
  --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI Variable", "Segoe UI",
          Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--paper);
       -webkit-font-smoothing: antialiased; line-height: 1.5; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.05; }
.muted { color: var(--muted); }

/* ---- Bar ---- */
.bar { position: fixed; inset: 0 0 auto 0; z-index: 10; height: 52px; display: flex; align-items: center;
       justify-content: space-between; padding: 0 max(20px, calc(50% - var(--max) / 2));
       background: rgba(11, 26, 46, 0.55); backdrop-filter: saturate(180%) blur(18px);
       -webkit-backdrop-filter: saturate(180%) blur(18px); color: #fff; font-size: 14px; }
.bar .brand { display: flex; gap: 8px; align-items: center; font-weight: 600; text-decoration: none; }
.bar .links { display: flex; gap: 22px; align-items: center; }
.bar .links a { text-decoration: none; opacity: 0.85; }
.bar .links a:hover { opacity: 1; }
.bar .pill { background: var(--water); padding: 5px 14px; border-radius: 999px; opacity: 1 !important; }

/* ---- Water ---- */
.water { position: absolute; inset: 0; background: url("img/water.jpg") center / cover no-repeat;
         transform: scale(1.06); animation: drift 24s ease-in-out infinite alternate; }
.water::after { content: ""; position: absolute; inset: 0;
                background: linear-gradient(180deg, rgba(11, 26, 46, 0.25) 0%, rgba(11, 26, 46, 0.55) 60%, var(--deep) 100%); }
@keyframes drift { from { transform: scale(1.06) translate3d(0, 0, 0); } to { transform: scale(1.12) translate3d(-1.5%, -1%, 0); } }

/* ---- Hero ---- */
.hero { position: relative; overflow: hidden; color: #fff; background: var(--deep); text-align: center;
        padding: 150px 20px 0; min-height: min(100vh, 1080px); }
.hero-text { position: relative; z-index: 1; }
.kicker { text-transform: uppercase; letter-spacing: 0.14em; font-size: 13px; font-weight: 600;
          color: var(--water-soft); margin: 0 0 14px; }
.hero h1 { font-size: clamp(72px, 14vw, 168px); font-weight: 700; }
.hero h1 .dot { color: var(--water); }
.lead { font-size: clamp(22px, 3vw, 34px); font-weight: 500; margin: 14px 0 0; opacity: 0.92; }
.cta { display: flex; gap: 22px; justify-content: center; align-items: center; margin-top: 30px; flex-wrap: wrap; }
.button { background: var(--water); color: #fff; text-decoration: none; padding: 12px 26px; border-radius: 999px;
          font-weight: 600; font-size: 17px; transition: transform 0.2s, background 0.2s; }
.button:hover { background: #2f7bf0; transform: translateY(-1px); }
.link { text-decoration: none; font-size: 17px; color: var(--water-soft); }
.link:hover { text-decoration: underline; }
.hero-shot { position: relative; z-index: 1; margin: 64px auto 0; max-width: var(--max); }
.hero-shot img { border-radius: 16px 16px 0 0; box-shadow: 0 -10px 80px rgba(0, 0, 0, 0.45); }

/* ---- Statement ---- */
.statement { text-align: center; padding: 140px 20px; max-width: 900px; margin: 0 auto; }
.statement p { font-size: 20px; color: var(--muted); margin: 0 0 18px; }
.statement h2 { font-size: clamp(36px, 5.4vw, 64px); font-weight: 700; }
.statement h2 .muted { font-weight: 600; }

/* ---- Features ---- */
.feature { padding: 120px max(20px, calc(50% - var(--max) / 2)); }
.feature.dark { background: var(--deep); color: #fff; }
.feature.dark p { color: rgba(255, 255, 255, 0.72); }
.feature h2 { font-size: clamp(40px, 5.6vw, 72px); font-weight: 700; margin-bottom: 22px; }
.feature .copy p { font-size: 20px; max-width: 560px; margin: 0; color: var(--muted); }
.feature .copy.center { text-align: center; }
.feature .copy.center p { margin: 0 auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split.reverse .copy { order: 2; }

.numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 64px;
           background: rgba(255, 255, 255, 0.12); border-radius: var(--radius); overflow: hidden; }
.numbers div { background: var(--deep-2); padding: 30px 24px; }
.numbers b { display: block; font-size: 34px; letter-spacing: -0.02em; }
.numbers span { color: rgba(255, 255, 255, 0.62); font-size: 15px; }

.ticks { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 10px; font-size: 17px; }
.ticks li::before { content: "✓"; color: var(--water); font-weight: 700; margin-right: 10px; }

.panel { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
         padding: 28px; box-shadow: 0 30px 60px rgba(15, 23, 42, 0.08); }
.panel img { border-radius: 12px; }
.meter .row { display: flex; justify-content: space-between; font-size: 17px; margin: 14px 0 8px; }
.meter .row b { font-size: 22px; }
.bar-track { height: 14px; border-radius: 999px; background: #eef2f7; overflow: hidden; }
.bar-track i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--water), #6ec6ff);
               border-radius: 999px; transition: width 1.4s cubic-bezier(.2, .8, .2, 1); }
.bar-track.faint i { background: #c9d2de; }
.visible .bar-track i, .bar-track.visible i { width: var(--w); }
.note { color: var(--muted); font-size: 13px; margin: 18px 0 0; }

.showcase .wide, #install .wide { margin: 64px auto 0; max-width: var(--max); }
.wide img { border-radius: 18px; box-shadow: 0 40px 80px rgba(15, 23, 42, 0.18); }
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 28px; }
.tile { margin: 0; }
.tile img { border-radius: 12px; border: 1px solid var(--line); aspect-ratio: 16 / 10; object-fit: cover; }
.tile figcaption { font-size: 14px; color: var(--muted); margin-top: 10px; text-align: center; }

.terminal { margin: 0; }
.terminal img { border-radius: 14px; box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5); }
.cmd { margin: 26px 0 0; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1);
       border-radius: 14px; padding: 18px 20px; font-family: var(--mono); font-size: 15px; color: #cfe3ff;
       overflow-x: auto; }

.steps { list-style: none; padding: 0; margin: 56px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.steps li { background: var(--deep-2); border-radius: var(--radius); padding: 26px; }
.steps b { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
           background: var(--water); color: #fff; font-size: 16px; margin-bottom: 18px; }
.steps h3 { font-size: 21px; margin-bottom: 8px; }
.steps p { font-size: 15px; margin: 0; }

.proof { display: grid; grid-template-columns: auto 1fr; gap: 6px 22px; align-items: baseline; }
.proof b { font-size: clamp(48px, 6vw, 80px); letter-spacing: -0.03em;
           background: linear-gradient(135deg, var(--water), #6ec6ff); -webkit-background-clip: text;
           background-clip: text; color: transparent; }
.proof span { color: var(--muted); font-size: 17px; }

.races { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 56px; }
.race { background: var(--deep-2); border-radius: var(--radius); padding: 28px; }
.race h3 { font-size: 20px; margin-bottom: 18px; }
.lane { display: grid; grid-template-columns: 58px 1fr 76px; gap: 14px; align-items: center; margin: 10px 0; }
.lane span { font-size: 13px; color: rgba(255, 255, 255, 0.55); }
.lane b { text-align: right; font-size: 18px; }
.race .bar-track { background: rgba(255, 255, 255, 0.08); }
.race .bar-track.faint i { background: rgba(255, 255, 255, 0.28); }

.band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center;
        padding: 90px max(20px, calc(50% - var(--max) / 2)); border-bottom: 1px solid var(--line); }
.band b { display: block; font-size: clamp(40px, 5vw, 64px); letter-spacing: -0.03em; }
.band span { color: var(--muted); font-size: 16px; }

/* ---- Specs ---- */
.specs { padding: 120px max(20px, calc(50% - var(--max) / 2)); }
.specs h2 { font-size: clamp(40px, 5vw, 64px); margin-bottom: 48px; }
.specs .grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.specs .grid div { padding: 28px 28px 28px 0; border-bottom: 1px solid var(--line); }
.specs h3 { font-size: 18px; margin-bottom: 8px; }
.specs p { margin: 0; color: var(--muted); font-size: 16px; max-width: 460px; }

/* ---- Closing ---- */
.closing { position: relative; overflow: hidden; color: #fff; background: var(--deep); text-align: center;
           padding: 160px 20px; }
.closing-text { position: relative; z-index: 1; }
.closing h2 { font-size: clamp(56px, 9vw, 112px); font-weight: 700; }
.closing p { font-size: 21px; opacity: 0.85; max-width: 560px; margin: 18px auto 0; }

footer { text-align: center; padding: 40px 20px 60px; font-size: 13px; color: var(--ink); }
footer p { margin: 6px 0; }
footer a { color: var(--muted); }

/* ---- Reveal ---- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s ease, transform 0.9s cubic-bezier(.2, .8, .2, 1); }
.reveal.visible { opacity: 1; transform: none; }
html.all .reveal, html.all .bar-track i { transition: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .water { animation: none; }
  .bar-track i { transition: none; width: var(--w); }
}

/* ---- Narrow screens ---- */
@media (max-width: 860px) {
  .bar .links a:not(.pill) { display: none; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split.reverse .copy { order: 0; }
  .numbers { grid-template-columns: repeat(2, 1fr); }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .races { grid-template-columns: 1fr; }
  .band { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr 1fr; }
  .specs .grid { grid-template-columns: 1fr; }
  .feature, .specs { padding-top: 90px; padding-bottom: 90px; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
  .numbers b { font-size: 26px; }
}