/* v274: expression pages brought into V4.1 one-screen style */
:root{--v274-blue:#2563eb;--v274-sky:#e0f2fe;--v274-ink:#0b2845;--v274-muted:#52677d;--v274-line:#bfdbfe;--v274-green:#10b981;--v274-gold:#f59e0b;}
html:has(body.v274-expression),body.v274-expression{margin:0;width:100%;height:100%;overflow:hidden;background:linear-gradient(180deg,#eef7ff 0%,#fbfdff 70%,#fff8df 100%);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--v274-ink);}body.v274-expression *{box-sizing:border-box}.v274-ex-shell{height:100dvh;max-height:100dvh;display:grid;grid-template-rows:auto 1fr;gap:12px;padding:14px clamp(14px,3vw,28px);overflow:hidden}.v274-ex-top{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px}.v274-ex-back,.v274-ex-link{min-height:44px;border-radius:999px;border:2px solid #bfdbfe;background:#fff;color:#1d4ed8;text-decoration:none;font-size:17px;font-weight:1000;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;box-shadow:0 8px 20px rgba(37,99,235,.08)}.v274-ex-title{display:flex;align-items:center;gap:12px;text-align:center}.v274-ex-title i{font-style:normal;width:48px;height:48px;border-radius:18px;display:grid;place-items:center;background:#eff6ff;border:2px solid #bfdbfe;font-size:32px}.v274-ex-title h1{margin:0;font-size:clamp(26px,3vw,38px);line-height:1;font-weight:1000}.v274-ex-title small{display:block;color:var(--v274-muted);font-weight:900;font-size:15px;margin-top:3px}.v274-ex-board{min-height:0;display:grid;grid-template-columns:minmax(0,.95fr) minmax(340px,1.05fr);gap:14px;max-width:1180px;width:100%;margin:0 auto}.v274-ex-card{min-height:0;border:3px solid var(--v274-line);border-radius:30px;background:#fff;box-shadow:0 16px 34px rgba(37,99,235,.10);padding:20px;display:flex;flex-direction:column}.v274-ex-card.soft{background:linear-gradient(180deg,#fff 0%,#eff6ff 100%)}.v274-ex-tag{align-self:flex-start;display:inline-flex;align-items:center;height:34px;border-radius:999px;background:#2563eb;color:#fff;font-size:17px;font-weight:1000;padding:0 14px;margin-bottom:12px}.v274-ex-prompt{font-size:clamp(28px,3.5vw,48px);line-height:1.08;font-weight:1000;letter-spacing:-.04em;margin:0 0 12px}.v274-ex-help{font-size:20px;line-height:1.35;color:#475569;font-weight:850;margin:0}.v274-ex-ideas{display:grid;gap:10px;margin-top:auto}.v274-ex-chip{border:2px solid #dbeafe;border-radius:20px;background:#f8fbff;padding:12px 14px;font-size:19px;font-weight:900;color:#0b2845}.v274-ex-text{width:100%;flex:1;min-height:180px;resize:none;border:3px solid #bfdbfe;border-radius:26px;padding:18px;font-size:24px;line-height:1.35;font-weight:850;color:#0b2845;background:#f8fbff;outline:none}.v274-ex-text:focus{border-color:#2563eb;background:#fff}.v274-ex-actions{display:flex;gap:12px;align-items:center;justify-content:flex-end;margin-top:12px}.v274-ex-btn{border:0;border-radius:999px;min-height:58px;padding:0 28px;font-size:22px;font-weight:1000;cursor:pointer}.v274-ex-btn.main{background:#2563eb;color:#fff;box-shadow:0 14px 28px rgba(37,99,235,.20)}.v274-ex-btn.light{background:#fff;color:#1d4ed8;border:3px solid #dbeafe}.v274-ex-note{min-height:44px;font-size:17px;font-weight:900;color:#64748b;display:flex;align-items:center}.v274-ex-done{display:none;position:fixed;inset:14px;z-index:40;align-items:center;justify-content:center;background:rgba(239,246,255,.88);backdrop-filter:blur(4px)}.v274-ex-done.show{display:flex}.v274-ex-done-card{width:min(760px,calc(100vw - 32px));border-radius:34px;background:linear-gradient(180deg,#fff 0%,#fef3c7 100%);border:3px solid #fde68a;box-shadow:0 20px 46px rgba(245,158,11,.20);text-align:center;padding:34px}.v274-ex-done-card .icon{font-size:70px}.v274-ex-done-card h2{margin:4px 0 10px;font-size:clamp(34px,4vw,54px);line-height:1;font-weight:1000}.v274-ex-done-card p{font-size:22px;font-weight:850;color:#475569}.v274-ex-done-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.v274-ex-toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#0f172a;color:white;border-radius:999px;padding:12px 20px;font-weight:900;font-size:18px;box-shadow:0 14px 30px rgba(15,23,42,.20);opacity:0;pointer-events:none;transition:.18s}.v274-ex-toast.show{opacity:1}
@media (orientation:landscape) and (max-height:760px){.v274-ex-shell{padding-top:8px;padding-bottom:8px;gap:8px}.v274-ex-top{min-height:46px}.v274-ex-back,.v274-ex-link{min-height:38px;font-size:15px}.v274-ex-title i{width:40px;height:40px;font-size:26px}.v274-ex-title h1{font-size:28px}.v274-ex-title small{display:none}.v274-ex-board{gap:10px}.v274-ex-card{padding:14px;border-radius:24px}.v274-ex-tag{height:28px;font-size:14px;margin-bottom:8px}.v274-ex-prompt{font-size:34px}.v274-ex-help{font-size:17px}.v274-ex-chip{font-size:16px;padding:8px 12px}.v274-ex-text{font-size:20px;min-height:126px;border-radius:20px;padding:12px}.v274-ex-btn{min-height:46px;font-size:18px}.v274-ex-note{font-size:14px;min-height:34px}.v274-ex-done-card{padding:24px}.v274-ex-done-card .icon{font-size:54px}.v274-ex-done-card h2{font-size:38px}.v274-ex-done-card p{font-size:18px}}
@media (max-width:900px){html:has(body.v274-expression),body.v274-expression{height:auto;min-height:100%;overflow:auto}.v274-ex-shell{height:auto;min-height:100dvh;max-height:none;overflow:visible;padding-bottom:90px}.v274-ex-board{grid-template-columns:1fr}.v274-ex-text{min-height:180px}}

/* v289: unified completion points line */
.v284-finish-points{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:8px;min-height:36px;border-radius:999px;background:#fffbeb;border:2px solid #facc15;color:#92400e;padding:0 13px;font-size:15px;font-weight:1000;}
.v284-finish-points strong{color:#0b2845;font-size:19px;line-height:1;}