/* Easy Pinyin — pages de contenu (tableau, syllabes, tons).
   Même système que l'appli : encre, papier, rouge vermillon, grille 米字格. */
:root{
  --bg:#FBFAF8; --surface:#FFFFFF; --ink:#141212; --muted:#6F6964; --line:rgba(20,18,18,.09);
  --red:#C3272B; --red-deep:#9C1C21; --on-red:#FFF6F1; --grid:rgba(195,39,43,.22); --gold:#A9823A;
  --f-sans:"Noto Sans","Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-han:"Noto Serif SC","Songti SC","SimSun",serif;
  --ease:cubic-bezier(.2,.7,.1,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B0A0A; --surface:#141212; --ink:#F3EFEA; --muted:#9A948E; --line:rgba(243,239,234,.1);
  --red:#D9383B; --red-deep:#A8262A; --grid:rgba(217,56,59,.3); --gold:#D0AD62; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B0A0A; --surface:#141212; --ink:#F3EFEA; --muted:#9A948E; --line:rgba(243,239,234,.1);
  --red:#D9383B; --red-deep:#A8262A; --grid:rgba(217,56,59,.3); --gold:#D0AD62; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-sans);font-weight:300;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;-webkit-tap-highlight-color:transparent}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.han{font-family:var(--f-han)}
.label{font-size:11px;font-weight:500;letter-spacing:.24em;text-transform:uppercase}

/* ---------- en-tête ---------- */
.hdr{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hdr-in{max-width:1120px;margin:0 auto;padding-inline:20px;height:64px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto;font-size:11px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;white-space:nowrap}
.seal{width:30px;height:30px;border-radius:4px;background:var(--red);color:var(--on-red);display:grid;place-items:center;font-family:var(--f-han);font-weight:700;font-size:17px;line-height:1;letter-spacing:0}
.nav{display:flex;gap:24px}
.nav a{text-decoration:none;color:var(--muted);font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;transition:color .2s}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.cta{display:inline-flex;align-items:center;justify-content:center;background:var(--red);color:var(--on-red);text-decoration:none;padding:11px 20px;border-radius:4px;font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;white-space:nowrap;transition:background .2s}
.cta:hover{background:var(--red-deep)}
.langsel{position:relative;display:inline-flex;align-items:center;color:var(--muted)}
.langsel select{appearance:none;-webkit-appearance:none;font:inherit;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:inherit;background:transparent;border:1px solid var(--line);border-radius:4px;padding:8px 28px 8px 12px;cursor:pointer}
.langsel select:hover{border-color:var(--ink);color:var(--ink)}
.langsel::after{content:"";position:absolute;right:11px;top:50%;width:5px;height:5px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:translateY(-70%) rotate(45deg);pointer-events:none}
.langsel option{color:#141212;background:#fff;text-transform:none;letter-spacing:0}
@media (max-width:760px){.nav{display:none}.hdr-in{gap:12px}.brand span:last-child{display:none}}

/* ---------- mise en page ---------- */
.wrap{max-width:880px;margin:0 auto;padding-inline:20px;padding-block:48px 40px}
.wrap.wide{max-width:1120px}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);margin:0 0 28px;padding:0;list-style:none}
.crumbs li+li::before{content:"/";margin-right:8px;opacity:.5}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.eyebrow{color:var(--red)}
h1{font-weight:200;font-size:clamp(36px,6vw,58px);line-height:1.08;letter-spacing:-.005em;margin:12px 0 18px;text-wrap:balance}
h2{font-weight:300;font-size:clamp(22px,3vw,28px);line-height:1.25;margin:0 0 22px;text-wrap:balance}
.lead{font-size:18px;color:var(--muted);max-width:62ch;margin:0}
.sec{margin-top:72px}

/* ---------- page syllabe ---------- */
.sy-hero{display:grid;grid-template-columns:auto 1fr;gap:clamp(24px,5vw,56px);align-items:center}
.sy-box{position:relative;width:clamp(120px,22vw,176px);aspect-ratio:1;max-width:100%;display:grid;place-items:center}
.sy-box svg.g{position:absolute;inset:0;width:100%;height:100%;color:var(--grid)}
.sy-box .han{position:relative;font-size:clamp(76px,14vw,116px);line-height:1;font-weight:500}
@media (max-width:560px){.sy-hero{grid-template-columns:1fr}}

.tones4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
@media (max-width:640px){.tones4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tcard{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:18px 18px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);text-align:left;transition:border-color .25s,transform .25s var(--ease)}
.tcard:hover{border-color:var(--red);transform:translateY(-2px)}
.tcard .n{font-size:10px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.tcard .m{font-size:32px;font-weight:300;line-height:1.1}
.tcard svg{width:48px;height:28px;color:var(--red)}
.tcard .c{font-family:var(--f-han);font-size:20px;letter-spacing:.12em;color:var(--muted)}
.tcard .c b{color:var(--ink);font-weight:500}
.tcard.off{opacity:.35;pointer-events:none}
.tcard .play{margin-top:4px;display:inline-flex;align-items:center;gap:6px;font-size:10px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.tcard .play svg{width:13px;height:13px;color:currentColor}

.srow{display:grid;grid-template-columns:140px minmax(0,1fr);gap:24px;padding:22px 0;border-top:1px solid var(--line)}
.srow:last-child{border-bottom:1px solid var(--line)}
.srow .k{font-size:10px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.srow .k b{display:block;margin-top:6px;font-size:36px;font-weight:300;letter-spacing:0;text-transform:none;color:var(--ink);line-height:1.1}
.srow p{margin:0;font-size:17px;align-self:center}
@media (max-width:560px){.srow{grid-template-columns:1fr;gap:6px}}

.words{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.word{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface);text-align:left;transition:border-color .25s}
.word:hover{border-color:var(--red)}
.word .h{font-family:var(--f-han);font-size:28px;font-weight:500;line-height:1.3}
.word .p{font-size:15px}
.word .d{font-size:13px;color:var(--muted);line-height:1.4}

.practice{margin-top:72px;padding:clamp(24px,5vw,44px);border-radius:16px;background:var(--red);color:var(--on-red);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;position:relative;overflow:hidden}
.practice::after{content:"练";position:absolute;right:-10px;bottom:-40px;font-family:var(--f-han);font-weight:700;font-size:200px;line-height:1;opacity:.08;pointer-events:none}
.practice h2{margin:0 0 6px}
.practice p{margin:0;opacity:.85;max-width:46ch}
.practice .btn{position:relative;z-index:1;background:var(--on-red);color:var(--red-deep);text-decoration:none;padding:15px 28px;border-radius:4px;font-size:11px;font-weight:500;letter-spacing:.24em;text-transform:uppercase;white-space:nowrap;transition:transform .25s var(--ease)}
.practice .btn:hover{transform:translateY(-2px)}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:9px 18px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-size:15px;transition:border-color .2s,color .2s}
.chip:hover{border-color:var(--red);color:var(--red)}
.back{display:inline-block;margin-top:28px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);text-decoration:none}
.back:hover{color:var(--ink)}

/* ---------- tableau pinyin ---------- */
.tbl-wrap{margin-top:36px;overflow:auto;max-height:calc(100vh - 150px);border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.tbl{border-collapse:separate;border-spacing:0;font-size:14px;min-width:100%}
.tbl th{position:sticky;top:0;z-index:2;background:var(--surface);font-weight:500;font-size:12px;color:var(--muted);padding:12px 6px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th.row{position:sticky;left:0;z-index:1;text-align:left;padding-left:16px;border-right:1px solid var(--line);border-bottom:0}
.tbl th.corner{left:0;z-index:3;text-align:left;padding-left:16px;border-right:1px solid var(--line);font-size:10px;letter-spacing:.14em;text-transform:uppercase}
.tbl td{padding:2px}
.tbl tr:nth-child(even) td,.tbl tr:nth-child(even) th.row{background:color-mix(in srgb,var(--surface) 94%,var(--ink))}
.tbl td a{display:block;text-align:center;text-decoration:none;width:100%;min-width:56px;padding:9px 6px;border-radius:6px;font-size:14px;transition:background .15s,color .15s}
.tbl td a:hover{background:var(--red);color:var(--on-red)}
.tbl td a.sel{background:var(--ink);color:var(--bg)}
.hint{margin-top:14px;font-size:12px;color:var(--muted)}

.dock{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:30;transform:translate(-50%,160%);transition:transform .5s var(--ease);width:max-content;max-width:calc(100% - 32px);display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px 18px;padding:14px 18px;border-radius:16px;background:var(--ink);color:var(--bg);box-shadow:0 30px 60px -20px rgba(0,0,0,.45)}
.dock.on{transform:translate(-50%,0)}
.dock .s{font-size:30px;font-weight:200;min-width:72px;text-align:center}
.dock .tb{display:flex;gap:6px}
.dock .tb button{width:58px;height:58px;border-radius:10px;border:1px solid color-mix(in srgb,var(--bg) 22%,transparent);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:16px;transition:background .15s}
.dock .tb button:hover{background:var(--red);border-color:var(--red);color:var(--on-red)}
.dock .tb button span{font-family:var(--f-han);font-size:13px;opacity:.7}
.dock .tb button:disabled{opacity:.25;pointer-events:none}
.dock a{font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;text-decoration:none;white-space:nowrap;border-bottom:1px solid currentColor;padding-bottom:2px}

/* ---------- page des tons ---------- */
.tone-list{display:grid;gap:12px}
.tone-row{display:grid;grid-template-columns:120px 90px minmax(0,1fr) auto;gap:22px;align-items:center;padding:20px 22px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.tone-row .m{font-size:42px;font-weight:200;line-height:1}
.tone-row .m small{display:block;font-family:var(--f-han);font-size:15px;color:var(--muted);margin-top:6px}
.tone-row svg{width:84px;height:48px;color:var(--red)}
.tone-row p{margin:0;font-size:16px}
.tone-row button{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted);transition:color .2s,border-color .2s}
.tone-row button:hover{color:var(--red);border-color:var(--red)}
.tone-row button svg{width:18px;height:18px;color:currentColor}
@media (max-width:640px){.tone-row{grid-template-columns:auto 1fr auto;gap:14px}.tone-row svg.curve{grid-row:2;grid-column:1}.tone-row p{grid-column:1/-1}}
.rules{list-style:none;margin:0;padding:0;display:grid;gap:0}
.rules li{padding:20px 0;border-top:1px solid var(--line);font-size:17px}
.rules li:last-child{border-bottom:1px solid var(--line)}

/* ---------- pied de page ---------- */
.ftr{margin-top:96px;border-top:1px solid var(--line)}
.ftr-in{max-width:1120px;margin:0 auto;padding-inline:20px;padding-block:36px 48px;display:flex;flex-wrap:wrap;gap:28px 48px;justify-content:space-between;font-size:13px;color:var(--muted)}
.ftr a{text-decoration:none}
.ftr a:hover{color:var(--ink)}
.ftr .cols{display:flex;flex-wrap:wrap;gap:12px 22px}
.ftr .brand{margin:0;color:var(--ink)}
.ftr p{margin:10px 0 0}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}