/* Inner Twitter: "still water" theme. Fraunces + Karla, soft sage, round shapes, one centered column. */
@font-face { font-family: "Fraunces"; src: url(fonts/fraunces-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url(fonts/fraunces-latin-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url(fonts/fraunces-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Karla"; src: url(fonts/karla-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Karla"; src: url(fonts/karla-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Karla"; src: url(fonts/karla-latin-700-normal.woff2) format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --bg: #E9EEE6; --panel: #F7F8F3; --ink: #1E2722; --muted: #4C5952; --line: #C9D4CB; --mist: #DCE6DE;
  --moss: #2F6B57; --moss-ink: #245746; --on-moss: #FFFFFF; --clay: #9A4E2C; --ring: #B9CABE;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Karla", system-ui, -apple-system, "Segoe UI", sans-serif;
  --r: 26px; --col: 700px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101512; --panel: #18201B; --ink: #E5ECE6; --muted: #AEBCB3; --line: #2E3A33; --mist: #1F2A24;
    --moss: #7CC3A4; --moss-ink: #8FD1B3; --on-moss: #0D1A14; --clay: #E3A27F; --ring: #34463B;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 1.09rem/1.7 var(--sans); overflow-x: hidden; }
img, svg { max-width: 100%; height: auto; }
a { color: var(--moss-ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--clay); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.18; margin: 0 0 .55em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 1.4rem + 2.8vw, 3.3rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1vw, 1.95rem); }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1.05em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--panel); padding: 8px 14px; z-index: 20; border-radius: 10px; }
.kicker { font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--clay); font-weight: 700; margin-bottom: .8em; }
.sub { font-size: 1.2rem; color: var(--muted); line-height: 1.6; }
.meta { color: var(--muted); font-size: .92rem; }

/* header */
.top { max-width: 1100px; margin: 0 auto; padding: 22px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.mark { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--serif); font-size: 1.35rem; }
.mark em { font-style: italic; color: var(--moss-ink); }
.top ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.top nav a { display: block; padding: 6px 14px; border-radius: 999px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: .98rem; }
.top nav a:hover { background: var(--mist); }
.top nav a[aria-current="page"] { background: var(--panel); box-shadow: inset 0 0 0 1px var(--line); }
@media (max-width: 520px) { .top { padding: 16px; } .top nav a { padding: 6px 10px; } .top ul { gap: 0; } }

/* home */
.intro, .tool, .how, .guides-list, .origin, .qa { max-width: var(--col); margin: 0 auto; padding: 0 24px; }
.intro { text-align: center; padding-top: 40px; padding-bottom: 30px; }
.intro h1 span { display: block; font-style: italic; color: var(--moss-ink); }
.intro .sub { max-width: 34em; margin: 0 auto; }
.tool { background: var(--panel); border-radius: 36px; padding: 34px 34px 26px; box-shadow: 0 1px 0 var(--line), 0 30px 60px -40px rgba(30, 60, 45, .35); max-width: 760px; }
@media (max-width: 600px) { .tool { margin: 0 12px; padding: 26px 18px 20px; border-radius: 28px; } .intro, .how, .guides-list, .origin, .qa { padding-left: 16px; padding-right: 16px; } }
.dial { display: flex; justify-content: center; }
.dial svg { width: 200px; }
.ring { fill: none; stroke: var(--ring); stroke-width: 1.5; }
.core { fill: var(--moss); transform-origin: 100px 100px; }
.is-running .core { animation: glow 6s ease-in-out infinite; }
@keyframes glow { 0%, 100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.35); opacity: 1; } }
.dot { fill: var(--panel); stroke: var(--moss); stroke-width: 2; }
.dot.done { fill: var(--moss); }
.status { text-align: center; color: var(--muted); min-height: 3.4em; margin: 10px auto 6px; max-width: 32em; }
.controls { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.btn-main, .btn-soft { font: 700 1.05rem var(--sans); border-radius: 999px; padding: 13px 30px; cursor: pointer; border: 0; text-decoration: none; display: inline-block; }
.btn-main { background: var(--moss); color: var(--on-moss); min-width: 150px; }
.btn-main:hover { filter: brightness(1.08); }
.btn-soft { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn-soft:hover { background: var(--mist); }
.settings fieldset { border: 0; border-top: 1px solid var(--line); margin: 0; padding: 18px 0 6px; min-width: 0; }
.settings legend { font-family: var(--serif); font-size: 1.15rem; padding: 0 10px 0 0; }
.row { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 8px 0 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 560px) { .grid3 { grid-template-columns: 1fr 1fr; } .grid3 > label:first-child { grid-column: 1 / -1; } }
.settings label { font-weight: 600; font-size: .95rem; }
.grid3 label { display: flex; flex-direction: column; gap: 6px; }
.unit { font-weight: 400; color: var(--muted); }
.settings input[type=number], .settings input[type=time], .settings select {
  font: 400 1rem var(--sans); color: var(--ink); background: var(--bg); border: 1.5px solid var(--line); border-radius: 14px; padding: 9px 12px; width: 100%; min-height: 44px; }
.settings input[type=range] { width: 100%; accent-color: var(--moss); min-height: 44px; }
.opt, .check { display: flex; align-items: flex-start; gap: 10px; font-weight: 400 !important; cursor: pointer; }
.check { margin: 10px 0; }
.opt input, .check input { accent-color: var(--moss); width: 20px; height: 20px; margin: 3px 0 0; flex: none; }
.hint { font-size: .93rem; color: var(--muted); margin: 0 0 8px; }
.small { font-size: .88rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; margin: 10px 0 0; }

.pause { border: 0; border-radius: 34px; padding: 34px 30px 28px; max-width: 440px; width: calc(100% - 32px); background: var(--panel); color: var(--ink); text-align: center; box-shadow: 0 40px 80px -30px rgba(0,0,0,.45); }
.pause::backdrop { background: rgba(20, 35, 28, .55); backdrop-filter: blur(3px); }
.pause-k { font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--clay); font-weight: 700; margin-bottom: 6px; }
.pause h2 { font-size: 1.9rem; }
.pause-steps { list-style: none; padding: 0; margin: 0 0 18px; text-align: left; display: grid; gap: 6px; }
.pause-steps li { background: var(--bg); border-radius: 14px; padding: 8px 14px; }
.breath { height: 150px; display: grid; place-items: center; }
.breath span { width: 70px; height: 70px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, var(--mist), var(--moss)); transition: transform 4s ease-in-out; }
.breath span.in { transform: scale(1.9); transition-duration: 4s; }
.breath span.out { transform: scale(1); transition-duration: 6s; }
.breath-cue { font-family: var(--serif); font-style: italic; font-size: 1.2rem; min-height: 1.6em; }

.how { margin-top: 70px; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0 22px; }
.how-grid > div { background: var(--panel); border-radius: var(--r); padding: 22px; }
.how-grid p { color: var(--muted); margin: 0; font-size: 1rem; }
.num { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid var(--moss); color: var(--moss-ink); font-family: var(--serif); margin-bottom: 10px; }
@media (max-width: 640px) { .how-grid { grid-template-columns: 1fr; } }
.guides-list { margin-top: 60px; }
.guides-list ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.guides-list li { border-bottom: 1px solid var(--line); }
.guides-list a { display: block; padding: 16px 4px; text-decoration: none; color: var(--ink); }
.guides-list a:hover .gt { text-decoration: underline; }
.gt { display: block; font-family: var(--serif); font-size: 1.25rem; }
.gs { display: block; color: var(--muted); font-size: .98rem; }
.origin { margin-top: 60px; }
.origin p { font-size: 1.12rem; }
.qa { margin: 60px auto 80px; }
.faq details { background: var(--panel); border-radius: 20px; margin-bottom: 10px; padding: 0 20px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; }
.faq details p { color: var(--muted); padding-bottom: 6px; }

/* reading pages */
.read { max-width: var(--col); margin: 0 auto; padding: 10px 24px 80px; }
@media (max-width: 600px) { .read { padding: 6px 16px 60px; } }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 10px; font-size: .88rem; color: var(--muted); }
.crumbs li + li::before { content: "·"; margin-right: 6px; }
.crumbs a { color: var(--muted); }
.read-head { padding: 26px 0 26px; margin-bottom: 30px; border-bottom: 1px solid var(--line); }
.text { font-size: 1.12rem; }
.text h2 { margin-top: 1.7em; }
.text ul, .text ol { padding-left: 1.3em; }
.text li { margin: .4em 0; }
.text blockquote { margin: 1.5em 0; padding: 6px 0 6px 22px; border-left: 3px solid var(--moss); font-family: var(--serif); font-style: italic; font-size: 1.2rem; color: var(--muted); }
.text strong { font-weight: 700; }
.tablebox { overflow-x: auto; margin: 1.4em 0; background: var(--panel); border-radius: 18px; padding: 4px 6px; }
.tablebox table { border-collapse: collapse; width: 100%; font-size: .98rem; }
.tablebox th, .tablebox td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tablebox tr:last-child td { border-bottom: 0; }
.note-box { margin: 40px 0 20px; background: var(--mist); border-radius: 20px; padding: 16px 20px; font-size: .97rem; }
.note-box p { margin: 0; }
.try { text-align: center; margin: 30px 0; }
.next-prev { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 30px; }
.next-prev a { display: block; background: var(--panel); border-radius: 20px; padding: 14px 18px; text-decoration: none; color: var(--ink); font-family: var(--serif); line-height: 1.35; }
.next-prev a:hover { box-shadow: inset 0 0 0 1.5px var(--moss); }
.next-prev small { display: block; font-family: var(--sans); color: var(--muted); font-size: .85rem; }
.next-prev .r { text-align: right; }
@media (max-width: 520px) { .next-prev { grid-template-columns: 1fr; } .next-prev .r { text-align: left; } }
.glist { list-style: none; padding: 0; margin: 0; counter-reset: g; }
.glist li { padding: 20px 0 20px 64px; border-bottom: 1px solid var(--line); position: relative; counter-increment: g; }
.glist li::before { content: counter(g); position: absolute; left: 0; top: 22px; width: 42px; height: 42px; border-radius: 50%; border: 1.5px solid var(--moss); display: grid; place-items: center; font-family: var(--serif); color: var(--moss-ink); }
.glist.plain li { padding-left: 0; }
.glist.plain li::before { display: none; }
.glist h2 { font-size: 1.45rem; margin-bottom: 6px; }
.glist h2 a { color: var(--ink); text-decoration: none; }
.glist h2 a:hover { text-decoration: underline; }
.glist p { color: var(--muted); margin: 0 0 4px; }

/* footer */
.bottom { background: var(--panel); border-top: 1px solid var(--line); }
.bottom-in { max-width: var(--col); margin: 0 auto; padding: 44px 24px 36px; text-align: center; }
.bottom-word { font-family: var(--serif); font-style: italic; font-size: 1.6rem; color: var(--moss-ink); }
.bottom ul { list-style: none; padding: 0; margin: 0 0 22px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; }
.bottom li { font-size: .95rem; }
.fine { font-size: .86rem; color: var(--muted); max-width: 40em; margin: 0 auto 10px; }
@media (prefers-reduced-motion: reduce) { .is-running .core { animation: none; } .breath span { transition: none; } }