@font-face { font-family: "Archivo"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("/fonts/archivo-var-latin.woff2") format("woff2"); }
@font-face { font-family: "Archivo"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("/fonts/archivo-var-latinext.woff2") format("woff2"); }
@font-face { font-family: "Mandarin SC"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/songti-sc-regular-186.woff2?v=6") format("woff2"); }
@font-face { font-family: "Mandarin SC"; font-style: normal; font-weight: 900; font-display: swap; src: url("/fonts/songti-sc-black-186.woff2?v=6") format("woff2"); }
:root { --red: #b83425; --red-dark: #8f281b; --ink: #181716; --ink-soft: #4e4a45; --white: #fffefb; --white-dim: #f5e9e4; --line-light: rgb(255 255 255 / 0.28); --line-dark: #d6d3ce; --focus: #7ab8ff; --hanzi: "Mandarin SC", serif; --ease: cubic-bezier(0.16, 1, 0.3, 1); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--ink); font-family: "Archivo", sans-serif; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 30; top: 8px; left: 8px; padding: 10px 14px; background: var(--white); color: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.bar { position: absolute; inset: 0 0 auto; z-index: 10; display: flex; align-items: center; justify-content: space-between; padding: clamp(16px, 3vw, 28px) clamp(20px, 4vw, 48px); }
.mark, .app-link { color: var(--white); text-decoration: none; }
.bar-right { display: flex; align-items: center; gap: clamp(16px, 3vw, 28px); }
.lang-link { min-height: 44px; display: inline-flex; align-items: center; color: var(--white); text-decoration: none; font-weight: 700; opacity: 0.75; }
.lang-link:hover, .lang-link:focus-visible { opacity: 1; }
.mark { font-weight: 900; font-size: 1.1rem; letter-spacing: -0.025em; }
.mark span { opacity: 0.8; }
.app-link { min-height: 44px; display: inline-flex; align-items: center; font-weight: 700; }
.hero { min-height: 100svh; display: grid; place-items: center; padding: clamp(88px, 12vh, 120px) 24px clamp(48px, 8vh, 96px); overflow: hidden; background: var(--red); color: var(--white); text-align: center; }
.hero-inner { width: min(100%, 900px); }
.glyph-button { position: relative; padding: 0; border: 0; background: transparent; color: var(--white); cursor: pointer; font-family: var(--hanzi); font-size: clamp(8rem, 31vmin, 18rem); font-weight: 900; line-height: 1; animation: stamp 650ms var(--ease) both; }
.play { position: absolute; right: -0.04em; bottom: 0.08em; width: 0.22em; height: 0.22em; border-radius: 50%; display: grid; place-items: center; background: var(--ink); }
.play svg { width: 42%; fill: var(--white); margin-left: 6%; }
.gloss { min-height: 1.6em; margin: 0; font-size: clamp(1rem, 2.4vw, 1.3rem); }
.hint { margin: 6px 0 0; color: var(--white-dim); font-size: 0.9rem; }
.hero h1 { margin: clamp(26px, 5vh, 46px) 0 0; font-size: clamp(2.35rem, 6.5vw, 5.1rem); font-weight: 900; line-height: 0.98; letter-spacing: -0.03em; text-wrap: balance; }
.lede { max-width: 35em; margin: 20px auto 0; color: var(--white-dim); font-size: clamp(1rem, 2vw, 1.18rem); text-wrap: pretty; }
.cta-row { margin-top: 30px; display: flex; justify-content: center; align-items: center; gap: 18px; flex-wrap: wrap; }
.btn { min-height: 56px; display: inline-flex; align-items: center; justify-content: center; padding: 14px 28px; border-radius: 999px; background: var(--ink); color: var(--white); text-decoration: none; font-weight: 800; transition: transform 180ms var(--ease); }
.btn:hover { transform: translateY(-2px); }
.quiet-link { min-height: 44px; display: inline-flex; align-items: center; color: var(--white); font-weight: 700; }
.trust { margin: 16px 0 0; color: var(--white-dim); font-size: 0.85rem; }
.wrap { width: min(100%, 760px); margin-inline: auto; }
.wide { width: min(100%, 920px); }
.method, .why, .wall, .story, .install { padding: clamp(74px, 12vh, 136px) 24px; }
.method { background: var(--ink); color: var(--white); }
h2 { margin: 0; font-size: clamp(2rem, 5vw, 3.35rem); font-weight: 900; line-height: 1.02; letter-spacing: -0.03em; text-wrap: balance; }
.rows { margin-top: 42px; }
.row { display: grid; grid-template-columns: minmax(64px, 90px) 1fr; gap: 20px; align-items: start; padding: 25px 0; border-top: 1px solid var(--line-light); }
.row .zi { color: #ee806c; font-family: var(--hanzi); font-size: 3rem; font-weight: 900; line-height: 1; }
.row h3 { margin: 0; font-size: 1.18rem; }
.row p { max-width: 46em; margin: 5px 0 0; color: #d9d4cd; }
.why, .wall, .story { background: var(--white); }
.why p, .story p, .wall p { max-width: 65ch; color: var(--ink-soft); font-size: 1.06rem; text-wrap: pretty; }
.why p { margin: 18px 0 0; }
.why strong { color: var(--ink); }
.why a { color: var(--red-dark); font-weight: 700; }
.sentence-demo { margin-top: 46px; }
.demo-words { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 14px; }
.demo-word { text-align: center; }
.demo-word .zi2 { display: block; color: #cbc8c2; font-family: var(--hanzi); font-size: clamp(2.5rem, 7vw, 4rem); font-weight: 900; line-height: 1.15; transition: color 420ms var(--ease), transform 420ms var(--ease); }
.demo-word .de { min-height: 1.2em; display: block; color: var(--red-dark); font-size: 0.8rem; font-weight: 750; opacity: 0; transform: translateY(4px); transition: opacity 360ms var(--ease), transform 360ms var(--ease); }
.demo-word.on .zi2 { color: var(--red); transform: translateY(-4px); }
.demo-word.on .de { opacity: 1; transform: none; }
.demo-word.unknown .zi2 { color: #77736d; }
.demo-word.unknown .de { color: var(--ink-soft); }
.demo-caption { margin-top: 20px !important; }
.replay { min-height: 44px; margin-top: 8px; padding: 8px 14px; border: 1px solid var(--line-dark); border-radius: 999px; background: transparent; color: var(--ink); cursor: pointer; font-weight: 700; }
.wall { padding-top: 0; }
.grid186 { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 6px; }
.grid186 a { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 8px; background: #efefec; color: var(--ink); font-family: var(--hanzi); font-size: 1.45rem; font-weight: 900; text-decoration: none; transition: background 160ms ease, color 160ms ease, transform 160ms var(--ease); }
.grid186 a:hover { background: var(--red); color: var(--white); transform: translateY(-2px); }
.story { padding-top: 20px; }
.story p { margin: 18px 0 0; }
.install { background: var(--red); color: var(--white); }
.install ol { margin: 24px 0 0 22px; padding: 0; font-size: 1.06rem; }
.install li { padding: 5px 0; color: var(--white-dim); }
.install p { max-width: 62ch; color: var(--white-dim); }
.install .btn { margin-top: 20px; }
.faq { margin-top: 62px; }
.faq details { padding: 16px 0; border-top: 1px solid var(--line-light); }
.faq summary { min-height: 44px; cursor: pointer; font-weight: 800; }
.faq p { margin: 8px 0 0; }
footer { margin-top: 70px; padding-top: 28px; border-top: 1px solid var(--line-light); display: flex; flex-wrap: wrap; gap: 36px; color: var(--white-dim); font-size: 0.84rem; }
footer strong, footer a { color: var(--white); }
.method-bar { position: static; background: var(--red); }
.method-page { min-height: 100vh; padding: clamp(70px, 10vw, 120px) 24px; background: var(--white); }
.method-page article { width: min(100%, 720px); margin-inline: auto; }
.method-page h1 { max-width: 13ch; margin: 10px 0 28px; font-size: clamp(2.5rem, 7vw, 5rem); line-height: 0.98; letter-spacing: -0.035em; text-wrap: balance; }
.method-page h2 { margin-top: 54px; font-size: clamp(1.5rem, 3vw, 2rem); }
.method-page p { max-width: 68ch; color: var(--ink-soft); font-size: 1.06rem; text-wrap: pretty; }
.page-kicker { margin: 0; color: var(--red-dark) !important; font-weight: 800; }
.page-lede { color: var(--ink) !important; font-size: 1.22rem !important; }
.page-action { margin-top: 50px; }
@keyframes stamp { from { opacity: 0; transform: scale(1.35); } to { opacity: 1; transform: scale(1); } }
@media (max-width: 560px) { .row { grid-template-columns: 52px 1fr; gap: 14px; } .row .zi { font-size: 2.2rem; } .grid186 a { width: 44px; height: 44px; font-size: 1.22rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }