/* =============================================================================
   ActuallyRead — design system (/read/app.css)
   The ActuallySpeak professional UI language: deep indigo ground, violet-tinted
   cards, a blue → violet → magenta gradient for anything meaning "progress" or
   "act now", and one light study card for close reading.

   Shared by /read/ (library), story.html, street.html, studio.html,
   academic.html, course.html, place.html.
   Namespaced .rd-* / --rd-* so it sits beside as-ds.css, gamify.js,
   aesthetic.js and premium.html without collision.
   ============================================================================= */

:root{
  /* ground — indigo, never flat black */
  --rd-bg:#05060f; --rd-bg-2:#080a18;
  --rd-panel:#0f1226; --rd-panel-2:#141834; --rd-panel-3:#1a1f42;
  --rd-line:rgba(139,92,246,.18); --rd-line-2:rgba(139,92,246,.34);

  --rd-ink:#ffffff; --rd-mut:#a8aec7; --rd-mut-2:#6b7196;

  --rd-grad:linear-gradient(96deg,#3b82f6 0%,#8b5cf6 52%,#ec4899 100%);
  --rd-grad-soft:linear-gradient(150deg,rgba(59,130,246,.16),rgba(139,92,246,.14) 52%,rgba(236,72,153,.12));
  --rd-blue:#3b82f6; --rd-violet:#8b5cf6; --rd-pink:#ec4899; --rd-cyan:#0ea5e9;
  --rd-green:#10b981; --rd-amber:#f59e0b; --rd-red:#ef4444;

  /* CEFR ladder — a walk along the brand gradient, so levels read as one system */
  --rd-A1:#22c55e; --rd-A2:#14b8a6; --rd-B1:#3b82f6;
  --rd-B2:#6366f1; --rd-C1:#8b5cf6; --rd-C2:#ec4899;

  --rd-r-sm:12px; --rd-r:16px; --rd-r-lg:22px; --rd-r-pill:999px;
  --rd-ease:cubic-bezier(.22,.61,.36,1);
  --rd-shadow:0 24px 60px -28px rgba(0,0,0,.95);
  --rd-glow:0 0 34px -10px rgba(139,92,246,.75);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body.rd{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:
    radial-gradient(760px 420px at 88% -8%,rgba(139,92,246,.20),transparent 62%),
    radial-gradient(620px 380px at -8% 8%,rgba(59,130,246,.14),transparent 60%),
    radial-gradient(520px 340px at 60% 100%,rgba(236,72,153,.08),transparent 62%),
    var(--rd-bg);
  background-attachment:fixed;
  color:var(--rd-ink);min-height:100vh;
  padding:0 0 122px;
  -webkit-font-smoothing:antialiased;
}
.rd-wrap{max-width:720px;margin:0 auto;padding:0 18px}

/* ---------------------------------------------------------------- top bar */
.rd-top{position:sticky;top:0;z-index:40;background:rgba(5,6,15,.94);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(139,92,246,.14)}
.rd-top-in{max-width:720px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;gap:12px}

.rd-brand{display:flex;align-items:center;gap:11px;min-width:0}
.rd-brand .rd-logo{width:44px;height:44px;flex:none;border-radius:13px;background:var(--rd-grad);
  display:grid;place-items:center;font-size:21px;box-shadow:0 8px 22px -8px rgba(139,92,246,.9)}
.rd-brand .rd-name{min-width:0}
.rd-brand .rd-name b{display:block;font-size:17px;font-weight:800;letter-spacing:-.5px;line-height:1.1}
.rd-brand .rd-name span{display:block;font-size:11.5px;color:var(--rd-mut);margin-top:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rd-top .rd-spacer{flex:1}

/* streak + level + XP capsule */
.rd-hud{flex:none;border:1px solid var(--rd-line);background:rgba(20,24,52,.72);
  border-radius:var(--rd-r);padding:8px 12px;min-width:138px;text-decoration:none;color:inherit;display:block}
.rd-hud-top{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:800}
.rd-hud-top .rd-div{width:1px;height:14px;background:rgba(168,174,199,.3)}
.rd-hud-top .rd-lv{color:#a78bfa}
.rd-hud-top .rd-ch{color:var(--rd-mut-2);font-weight:700;margin-left:auto}
.rd-hud-bar{display:flex;align-items:center;gap:8px;margin-top:6px}
.rd-hud-bar .rd-bar{flex:1;margin:0;height:5px}
.rd-hud-bar span{font-size:10.5px;color:var(--rd-mut);font-weight:700;white-space:nowrap}

.rd-iconbtn{width:42px;height:42px;border-radius:13px;border:1px solid var(--rd-line);
  background:rgba(20,24,52,.7);color:var(--rd-ink);display:grid;place-items:center;
  font-size:17px;cursor:pointer;flex:none;font-family:inherit}
.rd-iconbtn:active{transform:scale(.94)}
.rd-flame{display:flex;align-items:center;gap:5px;font-weight:800;font-size:13.5px;color:#fff;
  border:1px solid var(--rd-line);background:rgba(20,24,52,.7);border-radius:var(--rd-r-pill);padding:8px 13px}

/* ---------------------------------------------------------------- type */
.rd-h1{font-size:33px;line-height:1.1;letter-spacing:-1.1px;margin:24px 0 8px;font-weight:800}
.rd-grad-text{background:var(--rd-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.rd-lead{color:var(--rd-mut);font-size:15px;line-height:1.6;margin:0 0 20px}
.rd-eyebrow{font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--rd-mut-2);
  font-weight:800;margin:28px 2px 12px}
.rd-eyebrow-row{display:flex;align-items:center;justify-content:space-between;margin:28px 2px 12px}
.rd-eyebrow-row .rd-eyebrow{margin:0}
.rd-eyebrow-row a{font-size:12.5px;color:var(--rd-mut);text-decoration:none;font-weight:700}

.rd-badge{display:inline-block;background:var(--rd-grad);color:#fff;font-size:11.5px;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;padding:7px 17px;border-radius:var(--rd-r-pill)}

/* ---------------------------------------------------------------- buttons */
.rd-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;padding:13px 22px;
  border:none;border-radius:15px;background:var(--rd-grad);color:#fff;font-weight:800;font-size:15.5px;
  font-family:inherit;cursor:pointer;text-decoration:none;box-shadow:0 14px 34px -14px rgba(139,92,246,.95);
  transition:transform .12s var(--rd-ease)}
.rd-btn:active{transform:scale(.975)}
.rd-btn--block{display:flex;width:100%}
.rd-btn--ghost{background:rgba(20,24,52,.7);border:1px solid var(--rd-line);box-shadow:none;color:var(--rd-ink)}
.rd-btn--outline{background:transparent;border:1.5px solid var(--rd-line-2);box-shadow:none;color:#c4b5fd}
.rd-btn:focus-visible,.rd-iconbtn:focus-visible,.rd-chip:focus-visible,.rd-goalcard:focus-visible{
  outline:3px solid var(--rd-violet);outline-offset:2px}

/* ---------------------------------------------------------------- chips */
.rd-chiprow{display:flex;gap:8px;overflow-x:auto;padding:2px 0 8px;scrollbar-width:none}
.rd-chiprow::-webkit-scrollbar{display:none}
.rd-chip{flex:none;border:1px solid var(--rd-line);background:rgba(20,24,52,.6);color:var(--rd-mut);
  border-radius:var(--rd-r-pill);padding:10px 16px;font-weight:800;font-size:13px;cursor:pointer;font-family:inherit;
  display:inline-flex;align-items:center;gap:7px;white-space:nowrap;transition:all .16s var(--rd-ease)}
.rd-chip[aria-pressed="true"]{color:#fff;border-color:transparent;background:var(--rd-grad);
  box-shadow:0 8px 22px -10px rgba(139,92,246,.9)}
.rd-chip.rd-chip--lock{opacity:.45}

.rd-seg{display:inline-flex;background:rgba(20,24,52,.8);border:1px solid var(--rd-line);
  border-radius:var(--rd-r-pill);padding:4px;gap:2px}
.rd-seg button{border:none;background:none;font-family:inherit;font-weight:800;font-size:13.5px;
  color:var(--rd-mut);padding:9px 20px;border-radius:var(--rd-r-pill);cursor:pointer}
.rd-seg button[aria-pressed="true"]{background:var(--rd-grad);color:#fff}

.rd-lvl{display:inline-flex;align-items:center;gap:5px;font-size:10.5px;font-weight:900;letter-spacing:.1em;
  border-radius:var(--rd-r-pill);padding:5px 10px;color:#fff}
.rd-lvl[data-l="A1"]{background:var(--rd-A1)} .rd-lvl[data-l="A2"]{background:var(--rd-A2)}
.rd-lvl[data-l="B1"]{background:var(--rd-B1)} .rd-lvl[data-l="B2"]{background:var(--rd-B2)}
.rd-lvl[data-l="C1"]{background:var(--rd-C1)} .rd-lvl[data-l="C2"]{background:var(--rd-C2)}

/* ---------------------------------------------------------------- cards */
.rd-card{background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));
  border:1px solid var(--rd-line);border-radius:var(--rd-r-lg);overflow:hidden;position:relative}

/* hero mission card */
.rd-mission{padding:22px;background:
    radial-gradient(420px 240px at 88% 18%,rgba(139,92,246,.28),transparent 62%),
    linear-gradient(150deg,var(--rd-panel-3),var(--rd-panel));
  border:1px solid var(--rd-line-2);box-shadow:var(--rd-shadow)}
.rd-mission .rd-k{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#8ba4f8;font-weight:800}
.rd-mission h2{margin:10px 0 0;font-size:29px;line-height:1.14;letter-spacing:-.9px;font-weight:800;max-width:16ch}
.rd-mission p{margin:12px 0 0;color:var(--rd-mut);font-size:14.5px;line-height:1.55;max-width:34ch}
.rd-mission .rd-acts{display:flex;gap:10px;margin-top:18px;align-items:center}
.rd-mission .rd-art{position:absolute;right:-12px;top:50%;transform:translateY(-50%);
  width:150px;height:150px;opacity:.95;pointer-events:none}
@media(max-width:520px){.rd-mission h2{font-size:24px;max-width:13ch}
  .rd-mission .rd-art{width:112px;height:112px;right:-20px;opacity:.6}}

/* goal / pathway card */
.rd-goalcard{display:flex;align-items:center;gap:15px;width:100%;text-align:left;padding:17px;
  border-radius:var(--rd-r-lg);border:1px solid var(--rd-line);
  background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));
  color:inherit;text-decoration:none;font-family:inherit;cursor:pointer;margin-bottom:13px;
  transition:transform .14s var(--rd-ease),border-color .2s,box-shadow .2s;position:relative}
.rd-goalcard:active{transform:scale(.99)}
.rd-goalcard .rd-ic{width:62px;height:62px;flex:none;border-radius:16px;display:grid;place-items:center;
  font-size:29px;background:rgba(255,255,255,.05);border:1px solid var(--rd-line)}
.rd-goalcard .rd-tx{flex:1;min-width:0}
.rd-goalcard .rd-tx b{display:block;font-size:20px;font-weight:800;letter-spacing:-.5px}
.rd-goalcard .rd-tx span{display:block;font-size:13.5px;color:var(--rd-mut);line-height:1.45;margin-top:4px}
.rd-goalcard .rd-go{flex:none;color:var(--rd-violet);font-size:22px;font-weight:800}
.rd-goalcard[aria-pressed="true"],.rd-goalcard.rd-on{
  border-color:transparent;background:
    linear-gradient(160deg,rgba(59,130,246,.16),rgba(139,92,246,.16) 52%,rgba(236,72,153,.13)),
    linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));
  box-shadow:0 0 0 1.6px var(--rd-violet),var(--rd-glow)}
.rd-goalcard[aria-pressed="true"] .rd-go{font-size:0}
.rd-goalcard[aria-pressed="true"] .rd-go::after{content:'✓';display:grid;place-items:center;
  width:38px;height:38px;border-radius:50%;background:var(--rd-grad);color:#fff;font-size:18px}

/* quick-access tiles */
.rd-quick{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(84px,1fr);gap:10px;
  overflow-x:auto;scrollbar-width:none;padding:2px 0}
.rd-quick::-webkit-scrollbar{display:none}
.rd-quick a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  min-height:104px;padding:13px 8px;border-radius:var(--rd-r);border:1px solid var(--rd-line);
  background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));text-decoration:none;color:var(--rd-ink);
  font-size:12.5px;font-weight:700;text-align:center;line-height:1.25}
.rd-quick a i{font-style:normal;font-size:26px;line-height:1}
.rd-quick a.rd-on{border-color:transparent;box-shadow:0 0 0 1.5px var(--rd-violet),0 0 26px -12px var(--rd-violet)}

/* level / band card with shield */
.rd-band{display:flex;align-items:center;gap:17px;padding:19px}
.rd-shield{width:64px;height:72px;flex:none;position:relative;display:grid;place-items:center}
.rd-shield svg{position:absolute;inset:0;width:100%;height:100%}
.rd-shield b{position:relative;font-size:23px;font-weight:900;letter-spacing:-.5px}
.rd-band .rd-tx{flex:1;min-width:0}
.rd-band .rd-k{font-size:12.5px;color:var(--rd-mut);font-weight:700}
.rd-band .rd-big{font-size:26px;font-weight:800;letter-spacing:-.8px;margin-top:2px}
.rd-band .rd-sub{font-size:13px;color:var(--rd-mut);margin-top:3px;line-height:1.45}
.rd-band .rd-right{text-align:right;flex:none}
.rd-band .rd-right .rd-k{font-size:11.5px}
.rd-band .rd-right b{display:block;font-size:19px;font-weight:800;letter-spacing:-.5px;margin-top:2px}

/* progress bar with a glowing knob */
.rd-bar{height:8px;border-radius:99px;background:rgba(255,255,255,.08);overflow:visible;margin-top:10px;position:relative}
.rd-bar i{display:block;height:100%;border-radius:99px;background:var(--rd-grad);transition:width .6s var(--rd-ease);position:relative}
.rd-bar.rd-knob i::after{content:'';position:absolute;right:-5px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;border-radius:50%;background:#fff;box-shadow:0 0 12px 2px rgba(139,92,246,.9)}
.rd-barrow{display:flex;justify-content:space-between;font-size:11.5px;color:var(--rd-mut);font-weight:700;margin-top:9px}

/* list row */
.rd-row{display:flex;align-items:stretch;text-decoration:none;color:inherit;margin-bottom:11px;
  border-radius:var(--rd-r);overflow:hidden;border:1px solid var(--rd-line);
  background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));transition:border-color .2s,transform .14s var(--rd-ease)}
.rd-row:active{transform:scale(.995)}
.rd-row:hover{border-color:var(--rd-line-2)}
.rd-row .rd-thumb{width:78px;flex:none;display:grid;place-items:center;font-size:25px;position:relative;overflow:hidden;
  background:linear-gradient(150deg,rgba(59,130,246,.34),rgba(139,92,246,.3) 60%,rgba(236,72,153,.22))}
.rd-row .rd-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.rd-row .rd-thumb span{position:relative}
.rd-row .rd-mid{flex:1;min-width:0;padding:14px}
.rd-row .rd-mid b{display:block;font-size:15.5px;font-weight:800;letter-spacing:-.3px}
.rd-row .rd-mid span{display:block;font-size:12.5px;color:var(--rd-mut);margin-top:3px;line-height:1.4}
.rd-row .rd-end{flex:none;display:flex;align-items:center;gap:11px;padding:0 15px 0 6px}
.rd-row .rd-pct{text-align:right}
.rd-row .rd-pct b{display:block;font-size:14px;font-weight:800}
.rd-row .rd-pct .rd-mini{width:64px;height:5px;border-radius:99px;background:rgba(255,255,255,.09);margin-top:6px;overflow:hidden}
.rd-row .rd-pct .rd-mini i{display:block;height:100%;background:var(--rd-grad)}
.rd-row .rd-chev{color:var(--rd-mut-2);font-size:19px}

/* stat strip */
.rd-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:11px;margin:16px 0 4px}
.rd-stat{background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel));border:1px solid var(--rd-line);
  border-radius:var(--rd-r);padding:15px 12px;text-align:center}
.rd-stat b{display:block;font-size:23px;font-weight:800;letter-spacing:-.7px}
.rd-stat span{display:block;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--rd-mut-2);font-weight:800;margin-top:5px}

/* ring */
.rd-ring{position:relative;flex:none}
.rd-ring svg{display:block;transform:rotate(-90deg)}
.rd-ring .rd-ring-mid{position:absolute;inset:0;display:grid;place-items:center;text-align:center;line-height:1.05}

/* skill breakdown */
.rd-skill{display:flex;align-items:center;gap:12px;padding:11px 0}
.rd-skill .rd-si{width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;
  font-size:16px;background:rgba(139,92,246,.16);border:1px solid var(--rd-line)}
.rd-skill .rd-sn{width:104px;flex:none;font-size:14px;font-weight:700}
.rd-skill .rd-sb{flex:1;height:7px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.rd-skill .rd-sb i{display:block;height:100%;background:linear-gradient(90deg,#3b82f6,#8b5cf6)}
.rd-skill .rd-sv{width:40px;text-align:right;font-size:14px;font-weight:800;flex:none}
.rd-skill .rd-st{width:64px;text-align:right;font-size:12.5px;font-weight:700;flex:none;color:var(--rd-mut)}

/* coach strip */
.rd-coach{display:flex;align-items:center;gap:14px;padding:16px}
.rd-coach .rd-av{width:54px;height:54px;flex:none;border-radius:50%;background:var(--rd-grad);
  display:grid;place-items:center;font-size:25px;position:relative}
.rd-coach .rd-av::after{content:'';position:absolute;right:1px;bottom:1px;width:13px;height:13px;
  border-radius:50%;background:#22c55e;border:2.5px solid var(--rd-panel)}
.rd-coach .rd-tx{flex:1;min-width:0}
.rd-coach .rd-tx b{display:block;font-size:15.5px;font-weight:800}
.rd-coach .rd-tx span{display:block;font-size:13px;color:var(--rd-mut);margin-top:3px;line-height:1.45}

/* milestone badges */
.rd-miles{display:flex;gap:12px;overflow-x:auto;scrollbar-width:none;padding:2px 0}
.rd-miles::-webkit-scrollbar{display:none}
.rd-mile{flex:none;width:152px;text-align:center;padding:14px 10px;border-radius:var(--rd-r);
  border:1px solid var(--rd-line);background:linear-gradient(160deg,var(--rd-panel-2),var(--rd-panel))}
.rd-mile .rd-hex{width:56px;height:62px;margin:0 auto 9px;position:relative;display:grid;place-items:center}
.rd-mile .rd-hex svg{position:absolute;inset:0;width:100%;height:100%}
.rd-mile .rd-hex b{position:relative;font-size:17px;font-weight:900}
.rd-mile strong{display:block;font-size:13px;font-weight:800}
.rd-mile span{display:block;font-size:11.5px;color:var(--rd-mut);margin-top:3px;line-height:1.4}

/* ---------------------------------------------------- continue-reading hero */
.rd-hero{display:block;text-decoration:none;color:inherit;margin-bottom:6px;box-shadow:var(--rd-shadow)}
.rd-hero-art{position:relative;height:180px;background:#0b0e20}
.rd-hero-art img{width:100%;height:100%;object-fit:cover;display:block;opacity:.8}
.rd-hero-art::after{content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,6,15,.1) 0%,rgba(5,6,15,.6) 56%,var(--rd-panel) 100%)}
.rd-hero-badge{position:absolute;top:13px;left:13px;z-index:2;display:flex;gap:7px;align-items:center}
.rd-hero-txt{position:absolute;left:17px;right:17px;bottom:13px;z-index:2}
.rd-hero-k{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#8ba4f8;font-weight:800}
.rd-hero-t{display:block;font-size:22px;font-weight:800;letter-spacing:-.6px;margin-top:4px;line-height:1.18}
.rd-hero-foot{display:flex;align-items:center;gap:13px;padding:15px 17px 17px}
.rd-hero-foot .rd-meta{display:block;flex:1;min-width:0;font-size:12.5px;color:var(--rd-mut)}

/* story card */
.rd-grid{display:grid;gap:13px}
.rd-story{display:flex;gap:14px;padding:13px;text-decoration:none;color:inherit;align-items:stretch;
  transition:transform .14s var(--rd-ease),border-color .2s}
.rd-story:hover{border-color:var(--rd-line-2)}
.rd-story:active{transform:scale(.99)}
.rd-cover{display:block;width:88px;height:116px;border-radius:14px;flex:none;overflow:hidden;background:#0b0e20;position:relative}
.rd-cover img{width:100%;height:100%;object-fit:cover;display:block}
.rd-cover::after{content:'';position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(139,92,246,.22);border-radius:14px}
.rd-story-mid{flex:1;min-width:0;display:flex;flex-direction:column}
.rd-story-top{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.rd-genre{font-size:10.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--rd-mut-2)}
.rd-story h3{margin:7px 0 0;font-size:17px;letter-spacing:-.4px;line-height:1.24}
.rd-story p{margin:5px 0 0;font-size:13px;color:var(--rd-mut);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rd-story-foot{margin-top:auto;padding-top:9px;display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--rd-mut-2);font-weight:700}
.rd-tick{color:var(--rd-green)}

/* ------------------------------------------------- light study card (word) */
.rd-study{background:linear-gradient(170deg,#f6f4ff,#eceaf9);color:#0f1226;
  border-radius:var(--rd-r-lg);padding:20px;border:1px solid rgba(139,92,246,.3)}
.rd-study .rd-shead{display:flex;align-items:center;gap:13px}
.rd-study .rd-num{width:42px;height:42px;flex:none;border-radius:50%;background:var(--rd-grad);
  color:#fff;display:grid;place-items:center;font-weight:900;font-size:17px}
.rd-study h3{margin:0;font-size:27px;font-weight:800;letter-spacing:-.7px;flex:1;min-width:0;color:#0f1226}
.rd-study .rd-say{width:46px;height:46px;flex:none;border-radius:50%;border:1.5px solid rgba(139,92,246,.45);
  background:#fff;color:#7c3aed;font-size:19px;display:grid;place-items:center;cursor:pointer}
.rd-study .rd-def{margin:16px 0 0;padding-left:14px;border-left:3px solid #a78bfa;
  font-size:15.5px;line-height:1.6;color:#2c2f45}
.rd-study .rd-rule{height:1px;background:rgba(15,18,38,.1);margin:17px 0 13px}
.rd-study .rd-exk{font-size:13px;font-weight:800;color:#7c3aed;display:flex;align-items:center;gap:7px}
.rd-study .rd-ex{margin:8px 0 0;font-size:15px;font-style:italic;line-height:1.6;color:#2c2f45}
.rd-study .rd-ex b{font-style:normal;color:#7c3aed;font-weight:800}
.rd-study .rd-tr{margin:15px 0 0;font-size:19px;font-weight:800;color:#5b21b6}

/* coach tip */
.rd-tip{display:flex;align-items:center;gap:13px;padding:15px;margin-top:13px;border-radius:var(--rd-r-lg);
  border:1px solid var(--rd-line);background:linear-gradient(150deg,rgba(59,130,246,.11),rgba(236,72,153,.09))}
.rd-tip .rd-av{width:48px;height:48px;flex:none;border-radius:50%;background:var(--rd-grad);display:grid;place-items:center;font-size:22px}
.rd-tip .rd-tx{flex:1;min-width:0}
.rd-tip .rd-k{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#a78bfa;font-weight:800}
.rd-tip p{margin:5px 0 0;font-size:13.5px;color:var(--rd-mut);line-height:1.5}

/* empty / skeleton */
.rd-empty{color:var(--rd-mut);font-size:14px;text-align:center;padding:28px 10px;line-height:1.6}
.rd-skel{background:linear-gradient(90deg,rgba(139,92,246,.07),rgba(139,92,246,.16),rgba(139,92,246,.07));
  background-size:220% 100%;animation:rd-sh 1.3s linear infinite;border-radius:var(--rd-r)}
@keyframes rd-sh{0%{background-position:120% 0}100%{background-position:-120% 0}}

/* ---------------------------------------------------------------- dock */
.rd-dock{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;justify-content:center;
  padding:0 12px calc(11px + env(safe-area-inset-bottom,0px));pointer-events:none}
.rd-dock-in{pointer-events:auto;display:flex;gap:3px;width:100%;max-width:520px;justify-content:space-between;
  background:rgba(15,18,38,.94);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--rd-line);border-radius:22px;padding:7px;box-shadow:0 20px 48px -18px rgba(0,0,0,.95)}
.rd-dock a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;text-decoration:none;
  color:var(--rd-mut-2);font-size:10px;font-weight:700;letter-spacing:.02em;padding:9px 4px;border-radius:15px}
.rd-dock a i{font-style:normal;font-size:19px;line-height:1}
.rd-dock a.rd-on{color:#c4b5fd;background:rgba(139,92,246,.18);box-shadow:inset 0 0 0 1px rgba(139,92,246,.3)}

/* ---------------------------------------------------------------- sheet */
.rd-veil{position:fixed;inset:0;background:rgba(3,4,12,.72);z-index:2147482000;opacity:0;transition:opacity .18s;
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.rd-veil.rd-in{opacity:1}
.rd-sheet{position:fixed;left:0;right:0;bottom:0;z-index:2147482001;margin:0 auto;max-width:560px;
  background:linear-gradient(170deg,var(--rd-panel-2),var(--rd-panel));color:var(--rd-ink);
  border:1px solid var(--rd-line-2);border-bottom:none;border-radius:26px 26px 0 0;
  box-shadow:0 -22px 60px rgba(0,0,0,.7);padding:16px 20px calc(20px + env(safe-area-inset-bottom,0px));
  transform:translateY(102%);transition:transform .24s var(--rd-ease);max-height:84vh;overflow:auto}
.rd-sheet.rd-in{transform:translateY(0)}
.rd-grab{width:42px;height:4px;border-radius:99px;background:rgba(168,174,199,.35);margin:0 auto 15px}
.rd-sheet h3{margin:0 0 4px;font-size:20px;letter-spacing:-.5px}

@media (prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}
@media (min-width:640px){.rd-grid{grid-template-columns:1fr 1fr}.rd-hero-art{height:220px}}