/* Inter (SIL Open Font License), self-hosted: the site makes no third-party requests. */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400.woff2) format('woff2')}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-500.woff2) format('woff2')}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-600.woff2) format('woff2')}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700.woff2) format('woff2')}
html{scroll-behavior:smooth}
body{margin:0;background:#f5f7fb}
:focus-visible{outline:3px solid #4275ff;outline-offset:2px;border-radius:6px}
:root{
  --navy-950:#0b1736;--navy-900:#10214a;--navy-800:#17356f;
  --blue-600:#2f62f5;--blue-500:#4275ff;--blue-50:#eef3ff;--wordmark-ink:#081532;
  --green-600:#127a52;--green-100:#dff7ee;--amber-600:#9a5d06;--amber-100:#fff0d5;
  --violet-600:#6a4be0;--violet-100:#ece7ff;--red-600:#c23c46;--red-100:#ffe6e8;
  --bg:#f5f7fb;--surface:#ffffff;--surface-2:#f9fbfe;
  --text:#14213d;--text-2:#55617a;--text-3:#8e9ab1;--border:#e5eaf2;--border-strong:#cfd8e6;
  --on-navy-2:rgba(255,255,255,.78);--on-navy-line:rgba(255,255,255,.18);--accent-on-navy:#a9c0ff;
  --fs-meta:13px;--fs-body:16px;--fs-title:20px;--fs-h2:36px;--fs-h1:52px;
  --gutter:24px;
  --shadow-card:0 8px 22px rgba(19,40,82,.07);--shadow-feature:0 18px 50px rgba(15,35,79,.15);
}
@media (max-width:720px){:root{--fs-h1:34px;--fs-h2:26px;--gutter:16px}}
.fl *{box-sizing:border-box;margin:0;padding:0}
.fl{font-family:'Inter',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;font-size:var(--fs-body);line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
.fl a{color:inherit;text-decoration:none}
.fl svg{display:block}
.fl h1,.fl h2,.fl h3{letter-spacing:-.02em;font-weight:700}
.fl h1{font-size:var(--fs-h1);line-height:1.2}
.fl h2{font-size:var(--fs-h2);line-height:1.2}
.fl h3{font-size:var(--fs-title);line-height:1.35;font-weight:600}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--gutter)}
.chip{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:var(--fs-meta);font-weight:500;background:var(--blue-50);color:var(--blue-600);white-space:nowrap}
.chip-muted{background:var(--bg);color:var(--text-2)}
.chip-dev{background:var(--amber-100);color:var(--amber-600)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.logo{width:32px;height:32px;flex:none}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:var(--fs-title);letter-spacing:-.05em}
.card{background:var(--surface);border:1px solid var(--border);border-radius:20px}

/* nav */
.nav{display:flex;align-items:center;gap:32px;height:68px}
.nav-links{display:flex;gap:24px;font-size:var(--fs-meta);font-weight:500;color:var(--on-navy-2)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.lang{font-size:var(--fs-meta);font-weight:600;color:var(--on-navy-2);padding:8px 12px}
.menu-btn{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--on-navy-line);background:rgba(255,255,255,.06);color:#fff;align-items:center;justify-content:center}

/* ===== screen 1 ===== */
.s1{background:linear-gradient(170deg,var(--navy-950),var(--navy-900) 62%,var(--navy-800));color:#fff;border-radius:0 0 40px 40px;padding-bottom:56px}
.s1-head{text-align:center;max-width:760px;margin:48px auto 40px}
.s1-head .chip{background:rgba(255,255,255,.1);color:#fff}
.s1-head h1{margin:18px 0 16px}
.s1-head p{font-size:var(--fs-title);color:var(--on-navy-2);line-height:1.6}
.trio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.tri{background:var(--surface);color:var(--text);border-radius:22px;padding:24px;display:flex;flex-direction:column;box-shadow:var(--shadow-feature)}
/* the device line moves under the title when a language needs more room */
.tri-top{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px}
.tri-top b{font-size:var(--fs-title);white-space:nowrap}
.tri-top span{margin-left:auto;font-size:var(--fs-meta);color:var(--text-2)}
.tri ul{list-style:none;margin:16px 0;display:grid;gap:8px}
.tri li{display:flex;gap:10px;font-size:15px;line-height:1.55}
.tri li i{flex:none;font-style:normal;color:var(--blue-600);font-weight:700}
.tri li em{font-style:normal;font-weight:600}
.mini{margin-top:auto;background:var(--surface-2);border:1px solid var(--border);border-radius:16px;padding:14px 16px;font-size:var(--fs-meta);line-height:1.65}
.mini small{display:block;font-size:12px;color:var(--text-2);font-weight:600;margin-bottom:4px}
.more{margin-top:16px;font-size:var(--fs-meta);font-weight:600;color:var(--blue-600)}
.loop5{margin-top:40px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.steps{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px}
.steps span{font-size:15px;font-weight:600;padding:6px 16px;border-radius:999px;background:rgba(255,255,255,.1);color:#fff}
.steps i{font-style:normal;color:var(--accent-on-navy)}
.loop5 p{font-size:var(--fs-title);color:#fff;font-weight:600}
.status{margin-top:4px;font-size:var(--fs-meta);color:var(--on-navy-2)}

/* ===== screens 2-4 ===== */
.scr{padding:96px 0}
.scr-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center}
.scr-grid.flip > .scr-text{order:2}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-meta);font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:16px}
.tag-work{background:var(--blue-50);color:var(--blue-600)}
.tag-life{background:var(--green-100);color:var(--green-600)}
.tag-learn{background:var(--violet-100);color:var(--violet-600)}
.scr-text > p{margin-top:14px;color:var(--text-2);font-size:17px}
.flist{list-style:none;margin-top:28px;display:grid;gap:20px}
.flist li{display:grid;grid-template-columns:40px minmax(0,1fr);gap:14px}
.ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none}
.ic svg{width:20px;height:20px}
.ic.b{background:var(--blue-50);color:var(--blue-600)}.ic.g{background:var(--green-100);color:var(--green-600)}
.ic.v{background:var(--violet-100);color:var(--violet-600)}.ic.a{background:var(--amber-100);color:var(--amber-600)}
.ic.r{background:var(--red-100);color:var(--red-600)}
.flist b{display:block;font-size:17px}
.flist p{color:var(--text-2);font-size:15px;margin-top:2px}
.flist small{display:block;margin-top:6px;font-size:12px;color:var(--text-2)}
.s-life{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.note{margin-top:28px;font-size:var(--fs-meta);color:var(--text-2);background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px 16px}

/* mocks */
.win{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-feature);overflow:hidden}
.win-bar{display:flex;align-items:center;gap:6px;height:40px;padding:0 16px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.win-bar i{width:10px;height:10px;border-radius:50%;background:var(--border-strong)}
.win-bar span{margin-left:12px;font-size:var(--fs-meta);color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.win-body{padding:20px 24px 24px;line-height:1.75}
.quote{font-size:var(--fs-meta);color:var(--text-2);border-left:3px solid var(--border-strong);padding-left:12px;margin-bottom:14px}
.draft-label{font-size:var(--fs-meta);color:var(--text-2);margin-bottom:6px}
.sel{background:rgba(66,117,255,.18);border-radius:4px;box-shadow:inset 0 -2px 0 var(--blue-500)}
.fcard{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-feature);padding:20px}
.fhead{display:flex;align-items:center;gap:8px;font-size:var(--fs-meta);color:var(--text-2);font-weight:600;margin-bottom:12px}
.fhead .logo{width:20px;height:20px}
.styles{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.styles span{font-size:var(--fs-meta);padding:2px 10px;border-radius:999px;border:1px solid var(--border-strong);color:var(--text-2)}
.styles span.on{background:var(--navy-900);border-color:var(--navy-900);color:#fff}
.diff{font-size:15px;line-height:1.8}
.fl del{color:var(--red-600);background:var(--red-100);text-decoration:line-through;border-radius:3px;padding:0 2px}
.fl ins{color:var(--green-600);background:var(--green-100);text-decoration:none;border-radius:3px;padding:0 2px}
.why{margin-top:12px;padding-top:12px;border-top:1px solid var(--border);font-size:var(--fs-meta);color:var(--text-2);display:grid;gap:4px}
.why b{color:var(--text)}
.acts{display:flex;gap:8px;margin-top:14px}
.acts span{flex:1;display:inline-flex;align-items:center;justify-content:center;height:36px;border-radius:12px;font-size:var(--fs-meta);font-weight:600;border:1px solid var(--border-strong)}
.acts .pri{background:var(--blue-600);border-color:var(--blue-600);color:#fff}
.work-stage{position:relative;min-height:560px}
.work-stage .win{position:absolute;left:0;top:0;width:90%}
.work-stage .fcard{position:absolute;right:0;top:230px;width:390px}
.phones{display:flex;justify-content:center;gap:20px;align-items:flex-start}
.phone{width:250px;border-radius:40px;background:var(--navy-950);padding:10px;box-shadow:var(--shadow-feature);flex:none}
.phone.lower{margin-top:56px}
.phone-in{border-radius:31px;overflow:hidden;background:var(--bg);color:var(--text);min-height:500px}
.photo{height:240px;background:linear-gradient(180deg,#6f8197,#3a4a5c);display:flex;align-items:center;justify-content:center}
.sign{width:146px;background:#ffffff;border-radius:8px;padding:10px;text-align:center;color:#0d2b6b;font-weight:700;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.sign .p{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:6px;background:#1b4fd1;color:#fff;font-size:28px;line-height:1}
.sign .big{font-size:24px;line-height:1.1;margin-top:6px}
.sign .ln{font-size:12px;line-height:1.4;margin-top:2px}
.ocr{outline:2px solid #4275ff;outline-offset:1px;border-radius:2px}
.sheet{background:var(--surface);border-radius:20px 20px 0 0;margin-top:-16px;position:relative;padding:16px;min-height:276px}
.sheet small{font-size:var(--fs-meta);color:var(--blue-600);font-weight:600}
.sheet p{font-size:14px;line-height:1.6;margin-top:4px}
.follow{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}
.follow span{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--blue-50);color:var(--blue-600)}
.ask-top{padding:20px 16px 12px;background:var(--surface)}
.ask-top small{font-size:12px;color:var(--text-2)}
.bubble{margin-top:8px;background:var(--blue-600);color:#fff;border-radius:16px 16px 4px 16px;padding:10px 14px;font-size:14px;line-height:1.5}
.answer{padding:12px 16px}
.answer .opt{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px;margin-bottom:8px}
.answer .opt b{display:block;font-size:15px;line-height:1.45}
.answer .opt span{font-size:12px;color:var(--text-2)}
.answer .opt em{font-style:normal;font-size:11px;font-weight:600;padding:1px 8px;border-radius:999px;background:var(--blue-50);color:var(--blue-600);margin-right:6px}
.bigbtn{margin:4px 16px 16px;height:40px;border-radius:12px;background:var(--navy-900);color:#fff;font-size:13px;font-weight:600;display:grid;place-items:center}
.mic{width:56px;height:56px;border-radius:50%;background:var(--blue-600);color:#fff;display:grid;place-items:center;margin:4px auto 16px}
.mic svg{width:24px;height:24px}
.rv-top{background:linear-gradient(160deg,var(--navy-900),var(--navy-800));color:#fff;padding:22px 16px 36px}
.rv-top small{display:block;font-size:12px;color:var(--on-navy-2)}
.rv-top b{display:block;font-size:18px;margin-top:2px}
.rv-card{margin:-24px 12px 0;background:var(--surface);border-radius:18px;padding:18px 16px;box-shadow:var(--shadow-card);text-align:center}
.rv-card .w{font-size:22px;font-weight:700;margin-top:6px}
.rv-card .src{font-size:12px;color:var(--text-2);margin-top:2px}
.rv-card .ctx{margin-top:12px;background:var(--surface-2);border-radius:12px;padding:10px;font-size:13px;line-height:1.55;text-align:left}
.rv-card .mean{margin-top:10px;font-size:13px;text-align:left}
.grades{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin:14px 12px 16px}
.grades span{display:flex;flex-direction:column;align-items:center;padding:8px 0;border-radius:12px;background:var(--surface);border:1px solid var(--border);font-size:12px;font-weight:600}
.grades span small{font-weight:400;color:var(--text-2);font-size:11px}
.grades span.on{background:var(--blue-600);border-color:var(--blue-600);color:#fff}
.grades span.on small{color:rgba(255,255,255,.8)}
.learn-stage{position:relative;min-height:600px;display:flex;justify-content:center}
.learn-stage .book{position:absolute;left:0;top:40px;width:320px;background:#fbf8f1;color:#2b2a26;border:1px solid #ece4d3;border-radius:16px;box-shadow:var(--shadow-feature);padding:22px 24px;font-family:Georgia,'Songti SC','Noto Serif SC',serif;font-size:15px;line-height:1.75}
.learn-stage .book small{display:block;font-family:inherit;font-size:12px;color:#8a8170;margin-bottom:10px}
.learn-stage .book .hl{background:rgba(66,117,255,.18);box-shadow:inset 0 -2px 0 var(--blue-500);border-radius:3px}
.learn-stage .book .saved{margin-top:14px;font-family:'Inter',-apple-system,'PingFang SC',sans-serif;font-size:12px;color:var(--green-600);font-weight:600}
.learn-stage .phone{position:absolute;right:0;top:0}

/* captions under mock-ups (English page) */
.cap{margin-top:12px;font-size:var(--fs-meta);color:var(--text-2);line-height:1.6}
.s1 .cap{color:var(--on-navy-2)}
.mini-cap{display:block;margin-top:6px;font-size:12px;color:var(--text-2);font-style:italic}

/* pre-footer */
.pre{padding:72px 0}
.pre-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:48px}
.pre h3{font-size:var(--fs-title);margin-bottom:16px}
.plats{display:grid;gap:10px}
.plat{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px 16px}
.plat b{display:block;font-size:15px}
.plat span.d{display:block;font-size:var(--fs-meta);color:var(--text-2)}
.trust{background:var(--navy-950);color:#fff;border-radius:24px;padding:28px}
.trust h3{color:#fff}
.trust ul{list-style:none;display:grid;gap:16px}
.trust li b{display:block;font-size:15px}
.trust li span{display:block;font-size:var(--fs-meta);color:var(--on-navy-2);margin-top:2px}
.trust .links{margin-top:20px;font-size:var(--fs-meta);color:var(--on-navy-2);display:flex;flex-wrap:wrap;gap:16px}
.trust .links a{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* footer */
.foot-wrap{border-top:1px solid var(--border);padding:48px 0 32px;background:var(--surface)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot p{margin-top:12px;color:var(--text-2);font-size:var(--fs-meta);max-width:300px}
.foot h4{font-size:var(--fs-meta);font-weight:600;margin-bottom:12px}
.foot ul{list-style:none;display:grid;gap:8px;font-size:var(--fs-meta);color:var(--text-2)}
.legal{margin-top:36px;padding-top:20px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:var(--fs-meta);color:var(--text-2)}

@media (max-width:1080px){
  .trio{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .scr-grid{grid-template-columns:1fr;gap:40px}
  .scr-grid.flip > .scr-text{order:0}
  .pre-grid{grid-template-columns:1fr}
}
@media (max-width:900px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .foot{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .s1{border-radius:0 0 28px 28px;padding-bottom:48px}
  .s1-head{margin:28px auto 28px}
  /* the English eyebrow is wider than a 375px screen on one line */
  .s1-head .chip{height:auto;min-height:28px;padding:4px 10px;font-size:12px;white-space:normal;text-wrap:balance;text-align:center}
  .s1-head p,.loop5 p{font-size:var(--fs-body)}
  .scr{padding:64px 0}
  .scr-text > p{font-size:var(--fs-body)}
  .work-stage{min-height:0;display:flex;flex-direction:column;gap:16px}
  .work-stage .win,.work-stage .fcard{position:relative;left:auto;right:auto;top:auto;width:100%}
  .phones{flex-direction:column;align-items:center}
  .phone.lower{margin-top:0}
  .learn-stage{min-height:0;flex-direction:column;align-items:center;gap:16px}
  .learn-stage .book,.learn-stage .phone{position:relative;left:auto;right:auto;top:auto}
  .learn-stage .book{width:100%}
  .pre{padding:56px 0}
}

/* ===== language menu (header) ===== */
.langmenu{position:relative}
.langmenu summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;font-size:var(--fs-meta);font-weight:600;color:var(--on-navy-2);padding:8px 12px;border-radius:12px;white-space:nowrap}
.langmenu summary::-webkit-details-marker{display:none}
.langmenu summary svg{width:16px;height:16px}
.langmenu[open] summary{background:rgba(255,255,255,.08);color:#fff}
.langmenu-list{position:absolute;right:0;top:calc(100% + 6px);min-width:180px;background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-feature);padding:6px;z-index:30;display:grid}
.langmenu-list a{padding:8px 12px;border-radius:10px;font-size:14px;color:var(--text)}
.langmenu-list a:hover{background:var(--bg)}
.langmenu-list a[aria-current]{font-weight:600;color:var(--blue-600)}

/* ===== explanation languages (screen 1) ===== */
.langs{margin-top:22px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px}
.langs-label{font-size:var(--fs-meta);color:var(--on-navy-2);margin-right:4px}
.langs .l{font-size:var(--fs-meta);line-height:1.5;padding:3px 10px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--on-navy-line);color:#fff}

/* ===== language tags on mock-ups ===== */
.ltag{display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:999px;background:var(--violet-100);color:var(--violet-600);font-size:11px;font-weight:600;line-height:1;white-space:nowrap;font-style:normal}
.mini small{display:flex;align-items:center;justify-content:space-between;gap:8px}
.mini-why{display:block;margin-top:6px;font-size:12px;color:var(--text-2)}
.fhead .ltag{margin-left:auto}
.phone{position:relative}
.phone > .ltag{position:absolute;top:-10px;left:50%;transform:translateX(-50%);z-index:2;box-shadow:0 4px 10px rgba(15,35,79,.12)}
@media (min-width:721px){.intl .work-stage{min-height:660px}}

/* ===== other languages ===== */
.trust .legal-note{margin-top:10px;font-size:12px;color:var(--on-navy-2)}
.lang-list{display:inline}
.lang-list a{text-decoration:underline;text-underline-offset:3px}

/* Han characters are shared by Chinese and Japanese but drawn differently: give each
   language its own system fonts first, or Japanese text renders with Chinese glyphs. */
/* Headings: even line lengths instead of one orphaned character on the last line;
   Japanese has no spaces, so break it at phrase boundaries where the browser can. */
.fl h1,.fl h2{text-wrap:balance}
html:lang(ja) .fl h1,html:lang(ja) .fl h2,html:lang(ja) .fl h3{word-break:auto-phrase}
html:lang(ja) .fl,.fl [lang="ja"]{font-family:'Inter','Hiragino Sans','Hiragino Kaku Gothic ProN','Yu Gothic','Meiryo','Noto Sans JP',sans-serif}
html:lang(ko) .fl,.fl [lang="ko"]{font-family:'Inter','Apple SD Gothic Neo','Malgun Gothic','Noto Sans KR',sans-serif}
html:lang(zh-Hant) .fl,.fl [lang="zh-Hant"],.fl [lang="zh-TW"]{font-family:'Inter','PingFang TC','Microsoft JhengHei','Noto Sans TC',sans-serif}

/* phone menu (site.js toggles .open on the header) */
@media (max-width:900px){
  .nav{position:relative}
  .nav.open .nav-links{display:flex;position:absolute;top:68px;left:0;right:0;z-index:20;flex-direction:column;gap:0;background:#ffffff;border-radius:16px;padding:8px 16px;box-shadow:var(--shadow-feature)}
  .nav.open .nav-links a{padding:12px 0;font-size:var(--fs-body);color:var(--text);border-bottom:1px solid var(--border)}
  .nav.open .nav-links a:last-child{border-bottom:0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}