/* ST3 Interview — light theme, one stylesheet for the site, sign-in and the question bank */

@font-face { font-family: "Geist"; src: url("/assets/fonts/geist.woff2") format("woff2"); font-weight: 300 800; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("/assets/fonts/geist-mono.woff2") format("woff2"); font-weight: 400 600; font-display: swap; }

:root {
  --bg: #ffffff;
  --bg-2: #f6f7f9;
  --bg-3: #eceef2;
  --ink: #0a0d14;
  --ink-2: #394150;
  --ink-3: #687080;
  --ink-4: #9ba2ae;
  --line: #e8eaee;
  --line-2: #d6dae1;
  --blue: #2c5cf6;
  --blue-2: #1e46d8;
  --blue-tint: #eef2ff;
  --pink: #d3246b;
  --pink-tint: #fdeef4;
  --green: #0f9d58;
  --green-tint: #e7f6ee;
  --amber: #a85c00;
  --amber-tint: #fff3e0;
  --film: #05070b;
  --r-sm: 10px;
  --r: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --shadow-sm: 0 1px 2px rgba(10, 13, 20, .06);
  --shadow: 0 1px 2px rgba(10, 13, 20, .04), 0 8px 20px -6px rgba(10, 13, 20, .10);
  --shadow-lg: 0 2px 6px rgba(10, 13, 20, .04), 0 30px 70px -18px rgba(10, 13, 20, .28);
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --wrap: 1200px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16.5px/1.6 var(--sans); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -.028em; line-height: 1.08; color: var(--ink); }
h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); letter-spacing: -.045em; line-height: 1.0; }
h2 { font-size: clamp(2rem, 3.6vw, 3.05rem); letter-spacing: -.038em; }
h3 { font-size: 1.22rem; letter-spacing: -.018em; line-height: 1.25; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.nw { white-space: nowrap; }
.num, .mono { font-family: var(--mono); font-feature-settings: "tnum"; letter-spacing: -.01em; }
.muted { color: var(--ink-3); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 99px; }
.skip:focus { left: 12px; }
[hidden] { display: none !important; }

/* ---------- buttons ---------- */
.btn { --h: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: var(--h); padding: 0 20px; border-radius: 999px; border: 1px solid transparent; font: 500 15px/1 var(--sans); letter-spacing: -.01em; text-decoration: none; cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s, color .15s, transform .15s var(--ease), box-shadow .15s; }
.btn:active { transform: scale(.98); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #22283a; }
.btn-light { background: #fff; color: var(--ink); border-color: var(--line-2); }
.btn-light:hover { border-color: var(--ink-3); }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-2); }
.btn-white { background: #fff; color: var(--ink); }
.btn-lg { --h: 52px; padding: 0 26px; font-size: 16px; }
.btn-sm { --h: 36px; padding: 0 14px; font-size: 14px; }
.btn-block { width: 100%; }
.btn[disabled], .btn.loading { opacity: .55; pointer-events: none; }
.link { color: var(--ink); font-weight: 500; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.link:hover { color: var(--blue); }
.link svg { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.link:hover svg { transform: translateX(3px); }

/* ---------- chips ---------- */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; border-radius: 999px; background: var(--bg-3); color: var(--ink-2); font: 500 12.5px/1 var(--sans); white-space: nowrap; }
.chip-hy { background: var(--pink-tint); color: var(--pink); }
.chip-hy::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip-done { background: var(--green-tint); color: var(--green); }
.chip-blue { background: var(--blue-tint); color: var(--blue); }
.chip-glass { background: rgba(255, 255, 255, .16); color: #fff; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.chip-glass.chip-hy { background: rgba(211, 36, 107, .9); color: #fff; }

/* ---------- site header ---------- */
.top { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .86); backdrop-filter: saturate(1.6) blur(16px); -webkit-backdrop-filter: saturate(1.6) blur(16px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { height: 72px; display: flex; align-items: center; gap: 44px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 17px; letter-spacing: -.03em; white-space: nowrap; }
.logo svg { width: 30px; height: 30px; flex: none; }
.logo span { color: var(--ink-3); font-weight: 500; }
.nav { display: flex; align-items: center; gap: 30px; flex: 1; }
.nav > a { color: var(--ink-2); text-decoration: none; font-size: 15px; }
.nav > a:hover, .nav > a[aria-current="page"] { color: var(--ink); }
.nav-end { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.nav-end > a:not(.btn) { color: var(--ink-2); text-decoration: none; font-size: 15px; }
.nav-end > a:not(.btn):hover { color: var(--ink); }
.menu-btn { display: none; margin-left: auto; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--line-2); background: #fff; align-items: center; justify-content: center; cursor: pointer; }
@media (max-width: 900px) {
  .menu-btn { display: inline-flex; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 22px; box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav > a { padding: 14px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .nav-end { margin: 16px 0 0; flex-direction: column; align-items: stretch; gap: 10px; }
  .nav-end > a:not(.btn) { text-align: center; padding: 10px 0; font-size: 16px; }
}

/* ---------- hero ---------- */
.hero { padding: 56px 0 48px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 64px; align-items: center; }
.hero-kicker { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; color: var(--ink-2); margin-bottom: 28px; padding: 5px 14px 5px 5px; border: 1px solid var(--line); border-radius: 999px; background: #fff; }
.hero-kicker b { font: 500 12px/1 var(--sans); background: var(--ink); color: #fff; padding: 6px 10px; border-radius: 999px; }
.hero h1 { max-width: 11.5ch; }
.hero .lede { font-size: 19px; line-height: 1.55; color: var(--ink-2); max-width: 31em; margin: 26px 0 34px; }
.hero .ctas { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.hero-facts { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 44px; margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--line); }
@media (max-width: 480px) { .hero-facts { gap: 24px; } }
.hero-facts div { display: flex; flex-direction: column; gap: 4px; }
.hero-facts b { font: 500 24px/1.1 var(--mono); letter-spacing: -.05em; }
.hero-facts span { font-size: 13.5px; color: var(--ink-3); }
@media (max-width: 980px) { .hero .wrap { grid-template-columns: 1fr; gap: 48px; } .hero { padding-top: 32px; } .hero h1 { max-width: 14ch; } }

/* the film + station card */
.stage { position: relative; padding: 0 0 60px 64px; }
.film { position: relative; background: var(--film); border-radius: var(--r-xl); overflow: hidden; aspect-ratio: 4 / 5; box-shadow: var(--shadow-lg); }
.film img { width: 100%; height: 100%; object-fit: cover; }
.film::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, .5), rgba(0, 0, 0, 0) 16%), radial-gradient(130% 95% at 55% 38%, transparent 52%, rgba(0, 0, 0, .6)); pointer-events: none; }
.film-label { position: absolute; left: 22px; top: 20px; z-index: 3; font: 500 11.5px/1 var(--mono); letter-spacing: .08em; color: rgba(255, 255, 255, .7); text-transform: uppercase; }
.film-label.r { left: auto; right: 22px; }
.station-card { position: absolute; left: 0; bottom: 0; width: min(390px, 88%); background: #fff; border-radius: var(--r-lg); box-shadow: var(--shadow-lg), 0 0 0 1px rgba(10, 13, 20, .05); padding: 20px 20px 18px; z-index: 3; }
.station-card .row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.station-card .lbl { font: 500 11.5px/1 var(--mono); color: var(--ink-3); letter-spacing: .06em; text-transform: uppercase; }
.station-card p { font-size: 15.5px; line-height: 1.5; color: var(--ink); margin: 0 0 16px; }
.station-card .q { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14.5px; font-weight: 500; }
.station-card .q span:last-child { color: var(--blue); white-space: nowrap; font-size: 14px; }
@media (max-width: 560px) { .stage { padding: 0 0 150px 0; } .station-card { width: 100%; } }

/* timer */
.timer { display: inline-flex; align-items: center; gap: 10px; font: 500 15px/1 var(--mono); color: var(--ink); font-feature-settings: "tnum"; }
.timer svg { width: 28px; height: 28px; transform: rotate(-90deg); flex: none; }
.timer .track { stroke: var(--bg-3); }
.timer .bar { stroke: var(--blue); stroke-linecap: round; transition: stroke-dashoffset 1s linear; }
.timer.done .bar { stroke: var(--pink); }
.timer.done .t { color: var(--pink); }

/* ---------- proof strip ---------- */
.proof { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof div { padding: 28px 24px; border-left: 1px solid var(--line); }
.proof div:first-child { border-left: 0; padding-left: 0; }
.proof b { display: block; font: 500 30px/1.1 var(--mono); letter-spacing: -.06em; margin-bottom: 4px; }
.proof span { font-size: 14px; color: var(--ink-3); }
@media (max-width: 760px) { .proof .wrap { grid-template-columns: 1fr 1fr; } .proof div:nth-child(3) { border-left: 0; padding-left: 0; } .proof div:nth-child(n+3) { border-top: 1px solid var(--line); } }

/* ---------- sections ---------- */
.sec { padding: 120px 0; }
.sec-sm { padding: 80px 0; }
.sec-grey { background: var(--bg-2); }
.sec-head { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: end; margin-bottom: 56px; }
.sec-head p { color: var(--ink-2); font-size: 18px; line-height: 1.55; margin: 0; max-width: 32em; }
.sec-head.one { grid-template-columns: 1fr; max-width: 760px; gap: 18px; }
.kicker { display: block; font: 500 13px/1 var(--mono); color: var(--blue); letter-spacing: .01em; margin-bottom: 18px; }
@media (max-width: 860px) { .sec { padding: 84px 0; } .sec-head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 40px; } }

/* ---------- product showcase ---------- */
.show { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 72px; align-items: center; }
.show + .show { margin-top: 120px; }
.show.flip { grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr); }
.show.flip .show-text { order: 2; }
.show-text h3 { font-size: clamp(1.7rem, 2.6vw, 2.15rem); letter-spacing: -.038em; line-height: 1.12; margin-bottom: 16px; }
.show-text > p { color: var(--ink-2); font-size: 17px; }
.ticks { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 16px; }
.ticks li { display: grid; grid-template-columns: 22px 1fr; gap: 14px; color: var(--ink-2); font-size: 15.5px; line-height: 1.5; }
.ticks li::before { content: ""; width: 20px; height: 20px; margin-top: 1px; border-radius: 50%; background: var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.4l2.6 2.6L14.2 7.4' fill='none' stroke='white' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/20px no-repeat; }
.ticks b { color: var(--ink); font-weight: 600; }
.frame { border-radius: var(--r-lg); background: #fff; box-shadow: var(--shadow-lg), 0 0 0 1px rgba(10, 13, 20, .06); overflow: hidden; }
.frame-bar { height: 38px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.frame-bar span { font: 400 12px/1 var(--mono); color: var(--ink-3); background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px; }
.frame img { width: 100%; }
@media (max-width: 900px) { .show, .show.flip { grid-template-columns: 1fr; gap: 36px; } .show.flip .show-text { order: 0; } .show + .show { margin-top: 84px; } }

/* ---------- regions (films) ---------- */
.regions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.region { position: relative; display: block; aspect-ratio: 5 / 4; border-radius: var(--r-lg); overflow: hidden; background: var(--film); text-decoration: none; color: #fff; isolation: isolate; }
.region img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .8; transition: transform .7s var(--ease), opacity .3s; z-index: -1; }
.region:hover img { transform: scale(1.045); opacity: .9; }
.region::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, .45) 0%, rgba(0, 0, 0, 0) 22%, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, .8)); z-index: -1; }
.region-body { position: absolute; left: 24px; right: 24px; bottom: 22px; }
.region h3 { color: #fff; font-size: 1.5rem; letter-spacing: -.035em; margin-bottom: 8px; }
.region .meta { font: 400 13px/1.3 var(--mono); color: rgba(255, 255, 255, .78); }
.region .tag { position: absolute; top: 20px; left: 24px; font: 500 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: rgba(255, 255, 255, .55); }
@media (max-width: 900px) { .regions { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .regions { grid-template-columns: 1fr; } }

/* ---------- stations ---------- */
.stations { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.station img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--r); background: var(--bg-3); margin-bottom: 20px; }
.station h3 { margin-bottom: 8px; }
.station p { color: var(--ink-2); font-size: 15px; margin: 0 0 12px; }
.station .count { font: 400 13px/1 var(--mono); color: var(--ink-3); }
@media (max-width: 980px) { .stations { grid-template-columns: 1fr 1fr; gap: 40px 20px; } }
@media (max-width: 560px) { .stations { grid-template-columns: 1fr; } }

/* ---------- course ---------- */
.gallery { display: grid; grid-template-columns: 1.55fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; height: 580px; }
.gallery figure { margin: 0; position: relative; overflow: hidden; border-radius: var(--r-lg); background: var(--bg-3); }
.gallery figure:first-child { grid-row: span 2; }
.gallery img { width: 100%; height: 100%; object-fit: cover; }
.gallery figcaption { position: absolute; left: 14px; bottom: 14px; font: 500 12.5px/1 var(--sans); color: #fff; background: rgba(10, 13, 20, .55); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 8px 12px; border-radius: 999px; }
.course-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 72px; margin-top: 64px; align-items: start; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 36px; }
.facts h4 { font-size: 16.5px; letter-spacing: -.015em; margin-bottom: 8px; }
.facts p { color: var(--ink-2); font-size: 15px; margin: 0; }
.buybox { border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px; background: #fff; box-shadow: var(--shadow); }
.buybox h3 { font-size: 1.15rem; }
.buybox .price { display: flex; align-items: baseline; gap: 10px; margin: 14px 0 6px; }
.buybox .price b { font: 500 44px/1 var(--mono); letter-spacing: -.06em; }
.buybox .price s { color: var(--ink-4); font: 400 18px/1 var(--mono); }
.buybox .when { font-size: 14px; color: var(--ink-3); margin-bottom: 22px; }
.buybox .btn + .btn { margin-top: 10px; }
.buybox .btn { white-space: normal; height: auto; min-height: var(--h); padding-top: 11px; padding-bottom: 11px; line-height: 1.3; text-align: center; }
.buybox blockquote { margin: 24px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); font-size: 15.5px; color: var(--ink); line-height: 1.5; }
.buybox blockquote cite { display: block; margin-top: 10px; font: 400 12.5px/1 var(--mono); color: var(--ink-3); font-style: normal; }
@media (max-width: 900px) { .gallery { height: auto; grid-template-columns: 1fr 1fr; grid-template-rows: auto; } .gallery figure:first-child { grid-column: span 2; grid-row: auto; aspect-ratio: 4 / 3; } .gallery figure { aspect-ratio: 4 / 3; } .course-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } }
@media (max-width: 560px) { .facts { grid-template-columns: 1fr; } }

/* ---------- plans ---------- */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: stretch; }
.plan { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px 24px 24px; background: #fff; position: relative; }
.plan h3 { font-size: 1.12rem; margin-bottom: 8px; }
.plan .blurb { color: var(--ink-3); font-size: 14.5px; line-height: 1.5; margin: 0; }
.plan .price { display: flex; align-items: baseline; gap: 10px; margin: 26px 0 6px; }
.plan .price b { font: 500 44px/1 var(--mono); letter-spacing: -.06em; }
.plan .price s { font: 400 17px/1 var(--mono); color: var(--ink-4); }
.plan .note { font-size: 13px; color: var(--amber); font-weight: 500; min-height: 18px; }
.plan ul { list-style: none; padding: 0; margin: 22px 0 28px; display: grid; gap: 11px; font-size: 14.5px; color: var(--ink-2); align-content: start; }
.plan li { display: grid; grid-template-columns: 16px 1fr; gap: 10px; line-height: 1.45; }
.plan li::before { content: ""; width: 14px; height: 14px; margin-top: 3px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.4l3.2 3.2L13 4.8' fill='none' stroke='%232c5cf6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }
.plan .btn { margin-top: auto; }
.plan.featured { background: var(--ink); border-color: var(--ink); color: #fff; box-shadow: var(--shadow-lg); }
.plan.featured h3, .plan.featured .price b { color: #fff; }
.plan.featured .blurb, .plan.featured ul { color: rgba(255, 255, 255, .72); }
.plan.featured .price s { color: rgba(255, 255, 255, .45); }
.plan.featured .note { color: #ffc56b; }
.plan.featured li::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.4l3.2 3.2L13 4.8' fill='none' stroke='%239db5ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.plan .badge { position: absolute; top: 24px; right: 22px; font: 500 11.5px/1 var(--mono); letter-spacing: .04em; color: #9db5ff; }
@supports (grid-template-rows: subgrid) {
  .plans { grid-auto-rows: auto; }
  .plan { display: grid; grid-row: span 6; grid-template-rows: subgrid; row-gap: 0; }
  .plan .btn { align-self: end; }
}
.pay-note { margin-top: 28px; text-align: center; font-size: 14px; color: var(--ink-3); }
.pay-note a { color: var(--ink); }
@media (max-width: 1080px) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .plans { grid-template-columns: 1fr; } }

/* ---------- quotes ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px 44px; }
.quote { margin: 0; padding-top: 24px; border-top: 1px solid var(--ink); }
.quote p { font-size: 19.5px; line-height: 1.45; letter-spacing: -.02em; color: var(--ink); margin: 0 0 18px; }
.quote cite { font: 400 12.5px/1 var(--mono); color: var(--ink-3); font-style: normal; }
@media (max-width: 900px) { .quotes { grid-template-columns: 1fr; gap: 36px; } }

/* ---------- founder ---------- */
.founder { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); gap: 80px; align-items: center; }
.founder figure { margin: 0; position: relative; }
.founder img { width: 100%; aspect-ratio: 9 / 10; object-fit: cover; border-radius: var(--r-xl); background: #2b2b2b; }
.founder figcaption { position: absolute; left: 18px; bottom: 18px; font: 500 12.5px/1 var(--sans); color: #fff; background: rgba(10, 13, 20, .5); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 8px 12px; border-radius: 999px; }
.founder blockquote { margin: 0 0 26px; font-size: clamp(1.45rem, 2.4vw, 1.95rem); line-height: 1.28; letter-spacing: -.035em; font-weight: 500; color: var(--ink); }
.founder .who { font-size: 15.5px; color: var(--ink-2); margin-bottom: 40px; }
.founder .who b { color: var(--ink); font-weight: 600; }
.faculty { display: grid; grid-template-columns: 1fr 1fr; gap: 0 36px; border-top: 1px solid var(--line); }
.faculty div { padding: 18px 0; border-bottom: 1px solid var(--line); }
.faculty b { display: block; font-weight: 600; font-size: 15.5px; letter-spacing: -.01em; }
.faculty span { font-size: 14px; color: var(--ink-3); }
@media (max-width: 900px) { .founder { grid-template-columns: 1fr; gap: 44px; } .founder figure { max-width: 440px; } }
@media (max-width: 520px) { .faculty { grid-template-columns: 1fr; } }

/* ---------- faq ---------- */
.faq-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 72px; }
.faq-grid > div:first-child p { color: var(--ink-2); margin-top: 18px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 48px 22px 0; font-size: 17px; font-weight: 500; letter-spacing: -.015em; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before, .faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 14px; height: 1.6px; background: var(--ink); transition: transform .25s var(--ease); }
.faq summary::after { transform: rotate(90deg); }
.faq details[open] summary::after { transform: rotate(0); }
.faq details p { color: var(--ink-2); margin: -6px 0 22px; max-width: 60ch; }
@media (max-width: 860px) { .faq-grid { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- closing ---------- */
.closing { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); border-radius: var(--r-xl); overflow: hidden; background: var(--bg-2); border: 1px solid var(--line); }
.closing > div { padding: 72px 64px; align-self: center; }
.closing h2 { margin-bottom: 18px; }
.closing p { color: var(--ink-2); font-size: 18px; margin-bottom: 32px; max-width: 26em; }
.closing .ctas { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.closing img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }
@media (max-width: 860px) { .closing { grid-template-columns: 1fr; } .closing > div { padding: 44px 28px; } .closing img { min-height: 240px; max-height: 300px; } }

/* ---------- page heads & prose ---------- */
.page-head { padding: 72px 0 52px; }
.page-head h1 { font-size: clamp(2.5rem, 5vw, 4rem); max-width: 15ch; }
.page-head p { font-size: 19px; color: var(--ink-2); max-width: 34em; margin: 24px 0 0; line-height: 1.55; }
.page-head .ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; align-items: center; }
.crumbs { font-size: 14px; color: var(--ink-3); margin-bottom: 18px; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--ink); }
.narrow { max-width: 760px; }
.prose { font-size: 16.5px; line-height: 1.72; color: var(--ink-2); overflow-wrap: anywhere; }
.prose h2 { font-size: 1.55rem; margin: 2em 0 .6em; }
.prose h3 { font-size: 1.2rem; margin: 1.8em 0 .5em; }
.prose h4 { font-size: 1.02rem; margin: 1.5em 0 .4em; letter-spacing: -.01em; }
.prose p { margin: 0 0 1em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin: .35em 0; }
.prose li::marker { color: var(--ink-4); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--blue); text-underline-offset: 3px; }
.prose img { border-radius: var(--r); margin: 16px 0; max-height: 520px; width: auto; background: var(--film); cursor: zoom-in; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 1.2em 0; display: block; overflow-x: auto; }
.prose td, .prose th { border: 1px solid var(--line); padding: 9px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-2); color: var(--ink); font-weight: 600; }
.prose blockquote { margin: 1em 0; padding-left: 18px; border-left: 2px solid var(--ink); color: var(--ink); }

/* ---------- public topic list ---------- */
.tl-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 36px; }
.tl-group h3 { display: flex; justify-content: space-between; align-items: baseline; font-size: 1.15rem; padding-bottom: 14px; border-bottom: 1px solid var(--ink); margin-bottom: 2px; }
.tl-group h3 span { font: 400 12.5px/1 var(--mono); color: var(--ink-3); letter-spacing: 0; }
.tl { list-style: none; margin: 0; padding: 0; }
.tl li { display: flex; align-items: center; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
.tl li .t { flex: 1; min-width: 0; }
.tl li .n { font: 400 12.5px/1 var(--mono); color: var(--ink-4); }
.tl li .hy { width: 6px; height: 6px; border-radius: 50%; background: var(--pink); flex: none; }
.tl li a { color: var(--ink); text-decoration: none; font-weight: 500; }
.tl li a:hover { color: var(--blue); }
.legend { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; font-size: 14px; color: var(--ink-3); margin-bottom: 36px; }
.legend i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--pink); margin-right: 8px; }
@media (max-width: 900px) { .tl-groups { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .tl-groups { grid-template-columns: 1fr; } }

/* ---------- auth ---------- */
.auth { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); min-height: 100vh; }
.auth-side { position: relative; overflow: hidden; background: var(--film); }
.auth-side img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.auth-side::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5, 7, 11, .05) 35%, rgba(5, 7, 11, .8)); }
.auth-side figure { position: absolute; left: 52px; right: 52px; bottom: 48px; margin: 0; z-index: 2; color: #fff; }
.auth-side blockquote { margin: 0 0 16px; font-size: 24px; line-height: 1.38; letter-spacing: -.025em; font-weight: 500; max-width: 24em; }
.auth-side figcaption { font: 400 13px/1 var(--mono); color: rgba(255, 255, 255, .7); }
.auth-main { display: flex; flex-direction: column; padding: 28px 48px; }
.auth-main > .logo { align-self: flex-start; }
.auth-form { width: 100%; max-width: 400px; margin: auto; padding: 48px 0; }
.auth-form h1 { font-size: 2.2rem; letter-spacing: -.045em; margin-bottom: 10px; }
.auth-form .sub { color: var(--ink-3); margin-bottom: 30px; font-size: 16px; }
.auth-foot { font-size: 14.5px; color: var(--ink-3); margin-top: 26px; text-align: center; }
.auth-foot a { color: var(--ink); font-weight: 500; }
.auth-legal { font-size: 13px; color: var(--ink-4); text-align: center; margin-top: auto; padding-top: 16px; }
.auth-legal a { color: var(--ink-3); }
@media (max-width: 900px) { .auth { grid-template-columns: 1fr; } .auth-side { display: none; } .auth-main { padding: 20px 24px; } }

.field { display: grid; gap: 7px; margin-bottom: 16px; }
.field > label { font-size: 14px; font-weight: 500; color: var(--ink); display: flex; justify-content: space-between; align-items: baseline; }
.field > label a { font-weight: 400; color: var(--ink-3); text-decoration: none; }
.field > label a:hover { color: var(--ink); }
.input { width: 100%; height: 48px; padding: 0 14px; border: 1px solid var(--line-2); border-radius: 12px; background: #fff; font: 400 16px/1 var(--sans); color: var(--ink); transition: border-color .15s, box-shadow .15s; }
.input:hover { border-color: var(--ink-4); }
.input:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 4px rgba(10, 13, 20, .07); }
.input[aria-invalid="true"] { border-color: var(--pink); }
.pw { position: relative; }
.pw .input { padding-right: 72px; }
.pw button { position: absolute; right: 8px; top: 8px; height: 32px; padding: 0 10px; border: 0; background: var(--bg-2); border-radius: 8px; font-size: 13px; color: var(--ink-2); cursor: pointer; }
.hint { font-size: 13px; color: var(--ink-3); }
.meter { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin-top: 4px; }
.meter i { height: 4px; border-radius: 4px; background: var(--bg-3); transition: background .2s; }
.meter[data-s="1"] i:nth-child(-n+1) { background: var(--pink); }
.meter[data-s="2"] i:nth-child(-n+2) { background: var(--amber); }
.meter[data-s="3"] i:nth-child(-n+3) { background: var(--blue); }
.meter[data-s="4"] i { background: var(--green); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); margin: 6px 0 22px; line-height: 1.45; }
.check input { width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--ink); flex: none; }
.check a { color: var(--ink); }
.alert { border-radius: 12px; padding: 12px 14px; font-size: 14.5px; margin-bottom: 18px; line-height: 1.45; }
.alert-err { background: var(--pink-tint); color: #9b1450; }
.alert-ok { background: var(--green-tint); color: #0b6b3b; }
.order-sum { display: flex; justify-content: space-between; align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 26px; font-size: 14.5px; background: var(--bg-2); }
.order-sum b { font: 500 16px/1 var(--mono); }

/* ---------- footer ---------- */
footer.site { background: var(--bg-2); border-top: 1px solid var(--line); padding: 72px 0 36px; font-size: 14.5px; color: var(--ink-3); }
footer.site .cols { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 32px; margin-bottom: 56px; }
footer.site h4 { font: 500 13.5px/1 var(--sans); letter-spacing: 0; color: var(--ink); margin-bottom: 16px; }
footer.site ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
footer.site a { color: var(--ink-3); text-decoration: none; }
footer.site a:hover { color: var(--ink); }
footer.site .about p { max-width: 30em; margin: 16px 0 12px; }
footer.site .legal { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; }
@media (max-width: 760px) { footer.site .cols { grid-template-columns: 1fr 1fr; } footer.site .cols > div:first-child { grid-column: 1 / -1; } }

/* ================= question bank app ================= */
.app { background: var(--bg-2); min-height: 100vh; }
.appbar { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .9); backdrop-filter: saturate(1.6) blur(16px); -webkit-backdrop-filter: saturate(1.6) blur(16px); border-bottom: 1px solid var(--line); }
.appbar .wrap { height: 64px; display: flex; align-items: center; gap: 24px; }
.appbar .find { flex: 1; max-width: 460px; margin: 0 auto; position: relative; }
.appbar .find input { width: 100%; height: 40px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg-2); padding: 0 64px 0 40px; font: 400 14.5px/1 var(--sans); color: var(--ink); }
.appbar .find input:focus { outline: none; background: #fff; border-color: var(--ink-4); box-shadow: 0 0 0 4px rgba(10, 13, 20, .05); }
.appbar .find > svg { position: absolute; left: 14px; top: 12px; width: 16px; height: 16px; color: var(--ink-3); }
.appbar .find kbd { position: absolute; right: 12px; top: 10px; font: 400 11.5px/1 var(--mono); color: var(--ink-3); border: 1px solid var(--line-2); border-radius: 6px; padding: 4px 6px; background: #fff; }
.results { position: absolute; top: 48px; left: 0; right: 0; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg); padding: 6px; max-height: 62vh; overflow: auto; }
.results a { display: flex; align-items: center; gap: 12px; padding: 9px 10px; border-radius: 10px; text-decoration: none; color: var(--ink); font-size: 14.5px; }
.results a:hover, .results a.on { background: var(--bg-2); }
.results a small { color: var(--ink-3); font-size: 12.5px; margin-left: auto; white-space: nowrap; }
.results img { width: 44px; height: 32px; object-fit: cover; border-radius: 6px; background: var(--film); flex: none; }
.results .empty { padding: 14px; color: var(--ink-3); font-size: 14px; }
.me { display: flex; align-items: center; gap: 16px; position: relative; }
.me .pill { display: inline-flex; align-items: center; gap: 8px; font: 500 13px/1 var(--mono); color: var(--ink-2); }
.ring { --p: 0; width: 20px; height: 20px; border-radius: 50%; background: conic-gradient(var(--blue) calc(var(--p) * 1%), var(--bg-3) 0); position: relative; flex: none; }
.ring::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: #fff; }
.avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--ink); color: #fff; display: grid; place-items: center; font: 600 13px/1 var(--sans); border: 0; cursor: pointer; }
.menu { position: absolute; right: 0; top: 48px; width: 250px; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg); padding: 6px; }
.menu .who { padding: 10px 12px 12px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.menu .who b { display: block; font-size: 14px; }
.menu .who span { font-size: 13px; color: var(--ink-3); word-break: break-all; }
.menu a, .menu button { display: block; width: 100%; text-align: left; padding: 9px 12px; border-radius: 8px; border: 0; background: none; text-decoration: none; font-size: 14px; color: var(--ink); cursor: pointer; }
.menu a:hover, .menu button:hover { background: var(--bg-2); }
@media (max-width: 760px) { .appbar .find kbd, .me .pill { display: none; } .appbar .wrap { gap: 14px; } .appbar .logo span { display: none; } }

.dash { padding: 44px 0 96px; }
.hello { margin-bottom: 28px; }
.hello h1 { font-size: clamp(2rem, 3.6vw, 2.75rem); letter-spacing: -.045em; }
.hello p { color: var(--ink-3); margin: 10px 0 0; font-size: 16px; }
.dash-top { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 16px; margin-bottom: 16px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); }
.continue { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); overflow: hidden; min-height: 272px; text-decoration: none; color: var(--ink); transition: box-shadow .2s, border-color .2s; }
.continue:hover { border-color: var(--line-2); box-shadow: var(--shadow); }
.continue .pic { position: relative; background: var(--film); }
.continue .pic img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .92; }
.continue .pic .chip { position: absolute; left: 16px; top: 16px; }
.continue .body { padding: 30px; display: flex; flex-direction: column; }
.continue .lbl { font: 500 12px/1 var(--mono); color: var(--blue); letter-spacing: .02em; margin-bottom: 14px; }
.continue h2 { font-size: 1.85rem; letter-spacing: -.04em; margin-bottom: 10px; }
.continue p { color: var(--ink-3); font-size: 15px; }
.continue .btn { margin-top: auto; align-self: flex-start; }
.stat { padding: 26px; display: flex; flex-direction: column; }
.stat h3 { font-size: 15px; letter-spacing: -.01em; margin-bottom: 20px; color: var(--ink-2); font-weight: 500; }
.stat .big { display: flex; align-items: center; gap: 22px; margin-bottom: 18px; }
.bigring { --p: 0; width: 112px; height: 112px; border-radius: 50%; background: conic-gradient(var(--blue) calc(var(--p) * 1%), var(--bg-3) 0); display: grid; place-items: center; flex: none; }
.bigring > div { width: 94px; height: 94px; border-radius: 50%; background: #fff; display: grid; place-items: center; text-align: center; align-content: center; gap: 4px; }
.bigring b { font: 500 28px/1 var(--mono); letter-spacing: -.06em; display: block; }
.bigring span { font-size: 11.5px; color: var(--ink-3); }
.stat .big p { font-size: 14.5px; color: var(--ink-2); margin: 0; }
.stat .rows { display: grid; gap: 0; margin-top: auto; }
.stat .rows div { display: flex; justify-content: space-between; font-size: 14.5px; color: var(--ink-2); padding: 11px 0; border-top: 1px solid var(--line); }
.stat .rows b { font: 500 14.5px/1.3 var(--mono); color: var(--ink); }
@media (max-width: 900px) { .dash-top { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .continue { grid-template-columns: 1fr; } .continue .pic { aspect-ratio: 16 / 9; } }

.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 0 0 64px; }
.tile { position: relative; aspect-ratio: 4 / 3; border-radius: var(--r-lg); overflow: hidden; text-decoration: none; color: #fff; background: var(--film); isolation: isolate; }
.tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; transition: transform .7s var(--ease); }
.tile:hover img { transform: scale(1.045); }
.tile::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, .78)); }
.tile div { position: absolute; left: 18px; right: 18px; bottom: 16px; }
.tile b { display: block; font-size: 17px; font-weight: 600; letter-spacing: -.02em; margin-bottom: 3px; }
.tile span { font: 400 12.5px/1.3 var(--mono); color: rgba(255, 255, 255, .8); }
@media (max-width: 900px) { .tiles { grid-template-columns: 1fr 1fr; } }

.bank-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.bank-head h2 { font-size: 2rem; letter-spacing: -.045em; }
.bank-head h2 span { font: 400 14px/1 var(--mono); color: var(--ink-3); letter-spacing: 0; margin-left: 10px; }
.seg { display: inline-flex; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 4px; }
.seg button { border: 0; background: none; height: 32px; padding: 0 14px; border-radius: 999px; font-size: 14px; color: var(--ink-2); cursor: pointer; white-space: nowrap; }
.seg button[aria-pressed="true"] { background: var(--ink); color: #fff; }
@media (max-width: 560px) { .seg { width: 100%; overflow-x: auto; } }
.region-sec { margin-bottom: 48px; }
.region-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.region-head img { width: 44px; height: 44px; border-radius: 12px; object-fit: cover; background: var(--film); }
.region-head h3 { font-size: 1.3rem; letter-spacing: -.03em; }
.region-head .prog { margin-left: auto; display: flex; align-items: center; gap: 12px; font: 400 13px/1 var(--mono); color: var(--ink-3); }
.region-head .bar { width: 120px; height: 5px; border-radius: 9px; background: var(--bg-3); overflow: hidden; }
.region-head .bar i { display: block; height: 100%; width: 0; background: var(--blue); border-radius: 9px; transition: width .6s var(--ease); }
@media (max-width: 560px) { .region-head .bar { display: none; } }
.topics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 1100px) { .topics { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) { .topics { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .topics { grid-template-columns: 1fr; } }
.tcard { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; text-decoration: none; color: var(--ink); transition: border-color .15s, box-shadow .2s, transform .2s var(--ease); }
.tcard:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-2px); }
.tcard .pic { position: relative; aspect-ratio: 16 / 10; background: var(--film); overflow: hidden; }
.tcard .pic img { width: 100%; height: 100%; object-fit: cover; opacity: .94; }
.tcard .pic .chip { position: absolute; left: 10px; top: 10px; }
.tcard .tick { position: absolute; right: 10px; top: 10px; width: 24px; height: 24px; border-radius: 50%; background: var(--green); display: none; place-items: center; box-shadow: 0 2px 6px rgba(0, 0, 0, .25); }
.tcard .tick::after { content: ""; width: 9px; height: 5px; border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: translateY(-1px) rotate(-45deg); }
.tcard.done .tick { display: grid; }
.tcard .txt { padding: 13px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.tcard .txt b { font-size: 15px; font-weight: 600; letter-spacing: -.015em; line-height: 1.3; }
.tcard .txt span { font: 400 12.5px/1 var(--mono); color: var(--ink-3); margin-top: auto; }
.guides { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.guide { display: flex; align-items: center; gap: 16px; padding: 18px; text-decoration: none; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 16px; transition: border-color .15s; }
.guide:hover { border-color: var(--ink-4); }
.guide .gi { width: 44px; height: 44px; border-radius: 12px; background: var(--bg-2); display: grid; place-items: center; flex: none; color: var(--ink); }
.guide .gi svg { width: 20px; height: 20px; }
.guide b { display: block; font-size: 15.5px; letter-spacing: -.015em; }
.guide span { font-size: 13.5px; color: var(--ink-3); }
@media (max-width: 860px) { .guides { grid-template-columns: 1fr; } }
.nores { padding: 40px; text-align: center; color: var(--ink-3); border: 1px dashed var(--line-2); border-radius: var(--r-lg); }

/* topic page */
.tp { padding: 32px 0 96px; }
.tp-head { margin-bottom: 28px; }
.tp-head h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); letter-spacing: -.05em; margin-bottom: 16px; }
.tp-head .chips { display: flex; gap: 8px; flex-wrap: wrap; }
.tp-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: start; }
@media (max-width: 1000px) { .tp-grid { grid-template-columns: minmax(0, 1fr); } .tp-rail { order: 2; } .tp-rail .rail-list { display: none; } }
.scen { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; margin-bottom: 18px; box-shadow: var(--shadow-sm); }
.scen-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 14px 12px 22px; border-bottom: 1px solid var(--line); background: var(--bg-2); flex-wrap: wrap; transition: background .3s; }
.scen-bar .lbl { font: 500 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.scen-bar .timer { gap: 12px; }
.scen .prose { padding: 26px 28px 10px; font-size: 18.5px; line-height: 1.62; color: var(--ink); }
.scen .prose > h2:first-child { display: none; }
.scen.over .scen-bar { background: var(--pink-tint); }
.say { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--ink-3); margin: 24px 0 14px; }
.say svg { width: 18px; height: 18px; flex: none; }
.qc { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); margin-bottom: 12px; overflow: hidden; transition: border-color .2s, box-shadow .2s; scroll-margin-top: 90px; }
.qc.open { border-color: var(--line-2); box-shadow: var(--shadow); }
.qc-head { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding: 22px 24px 16px; align-items: start; }
.qc-n { font: 500 13px/1 var(--mono); color: var(--ink-3); background: var(--bg-2); border-radius: 9px; height: 30px; display: grid; place-items: center; }
.qc-q { font-size: 17.5px; font-weight: 500; letter-spacing: -.018em; line-height: 1.45; color: var(--ink); overflow-wrap: anywhere; padding-top: 3px; }
.qc-media { display: flex; flex-wrap: wrap; gap: 10px; padding: 2px 24px 18px 82px; }
.qc-media img { max-height: 380px; max-width: 100%; width: auto; border-radius: 12px; background: var(--film); cursor: zoom-in; }
@media (max-width: 600px) { .qc-media { padding-left: 20px; padding-right: 20px; } }
.qc-act { padding: 0 24px 22px 82px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.qc.open .qc-act { display: none; }
.qc-ans { display: none; border-top: 1px solid var(--line); padding: 24px 28px 6px 82px; }
.qc.open .qc-ans { display: block; animation: rise .35s var(--ease); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.rate { display: none; align-items: center; gap: 8px; flex-wrap: wrap; padding: 6px 24px 22px 82px; }
.qc.open .rate { display: flex; }
.rate span { font-size: 14px; color: var(--ink-3); margin-right: 4px; }
.rate button { height: 34px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: #fff; font-size: 14px; color: var(--ink-2); cursor: pointer; transition: all .15s; }
.rate button:hover { border-color: var(--ink-3); }
.rate button[aria-pressed="true"][data-r="good"] { background: var(--green); border-color: var(--green); color: #fff; }
.rate button[aria-pressed="true"][data-r="part"] { background: var(--amber); border-color: var(--amber); color: #fff; }
.rate button[aria-pressed="true"][data-r="miss"] { background: var(--pink); border-color: var(--pink); color: #fff; }
@media (max-width: 600px) { .qc-head { grid-template-columns: 1fr; gap: 12px; padding: 20px 20px 14px; } .qc-n { width: 44px; } .qc-act, .rate { padding-left: 20px; padding-right: 20px; } .qc-ans { padding-left: 20px; padding-right: 20px; } .scen .prose { padding: 22px 20px 8px; font-size: 17.5px; } }
.video { position: relative; aspect-ratio: 16 / 9; border-radius: var(--r); overflow: hidden; background: #000; margin: 10px 0 20px; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-title { font-weight: 600; margin: 26px 0 0; color: var(--ink); }
.tp-rail .box { position: sticky; top: 88px; display: grid; gap: 14px; }
.rail-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 20px; }
.rail-card h4 { font: 500 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.rail-card .btn { width: 100%; }
.rail-card .btn + .btn { margin-top: 8px; }
.qdots { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.qdots a { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; font: 500 12.5px/1 var(--mono); text-decoration: none; background: var(--bg-2); color: var(--ink-3); border: 1px solid var(--line); }
.qdots a.seen { background: #fff; color: var(--ink); border-color: var(--ink-4); }
.qdots a[data-r="good"] { background: var(--green); border-color: var(--green); color: #fff; }
.qdots a[data-r="part"] { background: var(--amber); border-color: var(--amber); color: #fff; }
.qdots a[data-r="miss"] { background: var(--pink); border-color: var(--pink); color: #fff; }
.rail-list { list-style: none; padding: 0; margin: 0; max-height: 46vh; overflow: auto; }
.rail-list a { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: 14px; color: var(--ink-2); text-decoration: none; border-top: 1px solid var(--line); }
.rail-list li:first-child a { border-top: 0; }
.rail-list a:hover { color: var(--ink); }
.rail-list a[aria-current] { color: var(--ink); font-weight: 600; }
.rail-list i { width: 7px; height: 7px; border-radius: 50%; background: var(--bg-3); flex: none; }
.rail-list a.done i { background: var(--green); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 44px; }
.pager a { display: flex; align-items: center; gap: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: #fff; text-decoration: none; color: var(--ink); transition: border-color .15s; }
.pager a:hover { border-color: var(--ink-4); }
.pager img { width: 68px; height: 50px; border-radius: 10px; object-fit: cover; background: var(--film); flex: none; }
.pager small { display: block; font: 400 12px/1 var(--mono); color: var(--ink-3); margin-bottom: 6px; }
.pager b { font-size: 14.5px; font-weight: 600; letter-spacing: -.01em; }
.pager .next { flex-direction: row-reverse; text-align: right; }
@media (max-width: 600px) { .pager { grid-template-columns: 1fr; } }

/* lightbox */
.lb { position: fixed; inset: 0; z-index: 100; background: rgba(5, 7, 11, .94); display: grid; place-items: center; padding: 32px; cursor: zoom-out; animation: fade .2s; }
.lb img { max-width: 100%; max-height: 100%; border-radius: 8px; box-shadow: 0 30px 80px rgba(0, 0, 0, .6); }
@keyframes fade { from { opacity: 0; } }

/* account */
.acct { padding: 44px 24px 96px; max-width: 808px; }
.acct h1 { font-size: 2.4rem; letter-spacing: -.045em; margin-bottom: 28px; }
.acct .card { padding: 28px; margin-bottom: 16px; }
.acct .card h2 { font-size: 1.15rem; letter-spacing: -.02em; margin-bottom: 18px; }
.kv { display: grid; grid-template-columns: 170px 1fr; gap: 12px 20px; font-size: 15px; margin: 0; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; color: var(--ink); }
.acct form { max-width: 420px; }
.acct .row-btns { display: flex; gap: 10px; flex-wrap: wrap; }
@media (max-width: 560px) { .kv { grid-template-columns: 1fr; gap: 2px; } .kv dd { margin-bottom: 12px; } }

.gate { max-width: 480px; margin: 0 auto; padding: 96px 24px; text-align: center; }
.gate h1 { font-size: 2.2rem; letter-spacing: -.045em; margin-bottom: 14px; }
.gate p { color: var(--ink-2); }
.gate .btn { margin-top: 10px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }
@media print { .top, .appbar, footer.site, .tp-rail, .pager, .rate, .qc-act { display: none !important; } .qc-ans { display: block !important; padding-left: 0 !important; } }