/* ==========================================================================
   LanBridge — landing page design concept
   Brand DNA from lanbridge.net: pure black, #f4f5f7 text, #9ee7ff cyan, #101216 panels.
   Added: gold (#ffcf6b) = live traffic, cyan = structure.
   ========================================================================== */

:root {
  --bg: #000;
  --panel: #0c0e12;
  --panel-2: #12151a;
  --panel-3: #181c22;
  --line: #22262d;
  --line-2: #323842;
  --fg: #f4f5f7;
  --fg-2: #c9cdd4;
  --muted: #969ba5;
  --muted-2: #7b8089;

  --cyan: #9ee7ff;
  --cyan-2: #56c7ee;
  --gold: #ffcf6b;
  --danger: #ff8a8a;
  --ok: #7ee0a5;

  --r-sm: 8px;
  --r: 14px;
  --r-lg: 22px;
  --r-xl: 30px;

  --ff: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', Arial, sans-serif;
  --ff-serif: 'Instrument Serif', 'Times New Roman', serif;
  --ff-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.22, 1, .36, 1);
  --dur: .28s;

  --nav-h: 68px;
  --gut: clamp(16px, 4vw, 32px);
  --maxw: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--ff); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
code, pre { font-family: var(--ff-mono); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
::selection { background: rgba(158, 231, 255, .28); }

.container { width: min(100% - var(--gut) * 2, var(--maxw)); margin-inline: auto; }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip { position: fixed; left: 16px; top: -60px; z-index: 400; background: var(--fg); color: #000; padding: 10px 16px; border-radius: 10px; font-weight: 600; transition: top .2s; }
.skip:focus { top: 12px; }

/* scroll progress */
.progress { position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 200; pointer-events: none; }
.progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--gold)); transform-origin: 0 50%; transform: scaleX(0); }

/* ------------------------------------------------------------ icons */
.ic { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ic--lg { width: 26px; height: 26px; color: var(--cyan); }
.ic--xl { width: 34px; height: 34px; color: var(--cyan); }

/* ------------------------------------------------------------ type */
h1, h2, h3 { font-weight: 500; letter-spacing: -.03em; line-height: 1.06; text-wrap: balance; }
h1 { font-size: clamp(2.7rem, 5.6vw, 5.3rem); letter-spacing: -.045em; line-height: 1; }
h2 { font-size: clamp(2rem, 4.2vw, 3.6rem); letter-spacing: -.04em; }
h3 { font-size: 1.25rem; letter-spacing: -.02em; line-height: 1.25; }
em {
  font-family: var(--ff-serif); font-style: italic; font-weight: 400; font-size: 1.08em; letter-spacing: -.01em;
  background: linear-gradient(100deg, var(--cyan) 0%, #fff 55%, var(--gold) 120%);
  -webkit-background-clip: text; background-clip: text; color: transparent; padding: 0 .06em; margin: 0 -.06em;
}
html[data-lang="zh"] em { font-family: var(--ff); font-style: normal; font-weight: 600; font-size: 1em; letter-spacing: 0; }
html[data-lang="zh"] h1, html[data-lang="zh"] h2 { letter-spacing: -.01em; line-height: 1.18; }
html[data-lang="zh"] .lead { line-height: 1.85; }

.lead { color: var(--muted); font-size: clamp(1.02rem, 1.4vw, 1.2rem); line-height: 1.65; max-width: 60ch; text-wrap: pretty; }
.fine { color: var(--muted-2); font-size: .82rem; line-height: 1.6; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--ff-mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); }
html[data-lang="zh"] .eyebrow { letter-spacing: .08em; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(158, 231, 255, .14), 0 0 14px var(--cyan); animation: pulse 2.4s ease-in-out infinite; }
.dot--ok { background: var(--ok); box-shadow: 0 0 0 4px rgba(126, 224, 165, .14), 0 0 12px var(--ok); }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(158, 231, 255, 0), 0 0 18px var(--cyan); } }

/* ------------------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 44px; padding: 0 20px; border-radius: 12px; font-weight: 600; font-size: .95rem; white-space: nowrap;
  transition: transform var(--dur) var(--ease), background var(--dur), border-color var(--dur), box-shadow var(--dur), color var(--dur);
}
.btn--lg { min-height: 54px; padding: 0 26px; font-size: 1rem; border-radius: 14px; }
.btn--primary { background: var(--fg); color: #000; box-shadow: 0 0 0 1px rgba(255, 255, 255, .5) inset, 0 8px 30px -8px rgba(158, 231, 255, .35); }
.btn--primary:hover { background: #dff7ff; transform: translateY(-2px); box-shadow: 0 0 0 1px #fff inset, 0 14px 40px -8px rgba(158, 231, 255, .55); }
.btn--primary:active { transform: translateY(0) scale(.98); }
.btn--ghost { border: 1px solid var(--line-2); color: var(--fg); background: rgba(255, 255, 255, .02); }
.btn--ghost:hover { border-color: var(--cyan); background: rgba(158, 231, 255, .07); transform: translateY(-2px); }
.btn--ghost:active { transform: translateY(0) scale(.98); }

.iconbtn { width: 36px; height: 36px; display: inline-grid; place-items: center; border-radius: 10px; color: var(--muted); transition: color var(--dur), background var(--dur); }
.iconbtn:hover { color: var(--fg); background: rgba(255, 255, 255, .07); }
.iconbtn.ok { color: var(--ok); }
.iconbtn--round { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line-2); color: var(--fg); }
.iconbtn--round:hover { border-color: var(--cyan); background: rgba(158, 231, 255, .08); }
.iconbtn:disabled, .iconbtn.swiper-button-disabled { opacity: .35; pointer-events: none; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button, .chip {
  min-height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line-2); color: var(--fg-2); font-size: .9rem; font-weight: 500;
  transition: border-color var(--dur), background var(--dur), color var(--dur), transform var(--dur) var(--ease);
}
.chips button:hover { border-color: var(--muted-2); color: var(--fg); }
.chips button[aria-checked="true"] { border-color: var(--cyan); background: rgba(158, 231, 255, .1); color: var(--cyan); }
.chips button:active { transform: scale(.97); }

.seg { display: inline-flex; padding: 4px; gap: 2px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 13px; max-width: 100%; flex-wrap: wrap; }
.seg button { min-height: 40px; padding: 0 16px; border-radius: 9px; color: var(--muted); font-size: .9rem; font-weight: 500; transition: background var(--dur), color var(--dur); }
.seg button:hover { color: var(--fg); }
.seg button[aria-checked="true"] { background: var(--fg); color: #000; }

/* ------------------------------------------------------------ nav */
.nav { position: fixed; inset: 0 0 auto 0; height: var(--nav-h); z-index: 100; transition: background var(--dur), border-color var(--dur), backdrop-filter var(--dur); border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(0, 0, 0, .72); -webkit-backdrop-filter: blur(16px) saturate(1.4); backdrop-filter: blur(16px) saturate(1.4); border-bottom-color: var(--line); }
.nav__in { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; }
.brand__mark { width: 30px; height: 33px; border-radius: 6px; }
.brand__txt { display: flex; flex-direction: column; line-height: 1.05; }
.brand__txt b { font-size: 1.05rem; font-weight: 600; letter-spacing: -.02em; }
.brand__txt small { font-size: .56rem; letter-spacing: .34em; color: var(--muted); margin-top: 3px; }
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links a { padding: 10px 14px; border-radius: 10px; color: var(--muted); font-size: .92rem; font-weight: 500; transition: color var(--dur), background var(--dur); }
.nav__links a:hover, .nav__links a.active { color: var(--fg); background: rgba(255, 255, 255, .06); }
.nav__actions { display: flex; align-items: center; gap: 10px; }
.lang { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 12px; border: 1px solid var(--line-2); border-radius: 999px; font-size: .84rem; font-weight: 600; color: var(--fg-2); transition: border-color var(--dur), color var(--dur); }
.lang:hover { border-color: var(--cyan); color: var(--fg); }
.nav__links .nav__mcta { display: none; }
.menu { display: none; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line-2); border-radius: 12px; }

/* ------------------------------------------------------------ hero */
.hero { position: relative; min-height: 100dvh; padding-top: var(--nav-h); overflow: hidden; isolation: isolate; }
.hero__bg { position: absolute; inset: 0; z-index: -1; }
.hero__glow { position: absolute; border-radius: 50%; filter: blur(90px); will-change: transform; }
.hero__glow--a { width: 60vmax; height: 60vmax; right: -18vmax; top: -22vmax; background: radial-gradient(circle, rgba(158, 231, 255, .22), transparent 62%); }
.hero__glow--b { width: 44vmax; height: 44vmax; right: -6vmax; bottom: -20vmax; background: radial-gradient(circle, rgba(255, 207, 107, .14), transparent 62%); }
.hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 68% 38%, #000 10%, transparent 72%);
  mask-image: radial-gradient(ellipse 70% 60% at 68% 38%, #000 10%, transparent 72%);
}
.hero__in { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr); gap: clamp(20px, 4vw, 64px); align-items: center; min-height: calc(100dvh - var(--nav-h)); padding-block: clamp(32px, 6vh, 72px) 88px; }
.hero__copy { display: flex; flex-direction: column; align-items: flex-start; gap: 26px; min-width: 0; max-width: 100%; }
.hero__copy .lead { max-width: 52ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.endpoint { display: flex; align-items: center; gap: 12px; max-width: 100%; min-width: 0; padding: 6px 6px 6px 14px; border: 1px solid var(--line); border-radius: 14px; background: rgba(12, 14, 18, .8); font-size: .82rem; }
.endpoint code { min-width: 0; color: var(--fg-2); overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.endpoint code::-webkit-scrollbar { display: none; }
.endpoint__verb { font-family: var(--ff-mono); font-size: .68rem; font-weight: 600; color: #000; background: var(--gold); border-radius: 6px; padding: 2px 7px; letter-spacing: .06em; }
.hero__facts { display: flex; gap: clamp(20px, 3.4vw, 44px); padding-top: 4px; }
.hero__facts li { display: flex; flex-direction: column; gap: 2px; padding-left: 14px; border-left: 1px solid var(--line-2); }
.hero__facts b { font-size: 1.55rem; font-weight: 500; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.hero__facts span { font-size: .8rem; color: var(--muted); }

.hero__viz { position: relative; align-self: stretch; min-height: 460px; }
.hero__viz canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.viz__tag { position: absolute; top: 10px; left: 10px; display: inline-flex; align-items: center; gap: 8px; font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; background: rgba(0, 0, 0, .55); }
.netlog { position: absolute; left: 0; right: 0; bottom: 0; display: flex; flex-direction: column; gap: 4px; padding: 12px 14px; font-family: var(--ff-mono); font-size: .72rem; color: var(--muted); background: linear-gradient(180deg, transparent, rgba(0, 0, 0, .6) 45%); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); min-height: 84px; justify-content: flex-end; pointer-events: none; }
.netlog li { display: flex; gap: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; animation: logIn .4s var(--ease); }
.netlog .ok { color: var(--ok); } .netlog .bad { color: var(--danger); } .netlog .lb { color: var(--gold); } .netlog .dim { color: var(--muted-2); }
@keyframes logIn { from { opacity: 0; transform: translateY(6px); } }

.scrollcue { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); display: inline-flex; flex-direction: column; align-items: center; gap: 4px; color: var(--muted-2); font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; min-height: 44px; }
.scrollcue .ic { animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(5px); } }

/* ------------------------------------------------------------ proof */
.proof { padding-block: 56px 64px; border-top: 1px solid var(--line); background: linear-gradient(180deg, #05070a, #000); }
.proof__label { text-align: center; color: var(--muted-2); font-family: var(--ff-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; padding-inline: var(--gut); }
.marquee { margin-block: 30px 72px; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; gap: 56px; width: max-content; animation: marquee 60s linear infinite; }
.marquee__track li { font-size: clamp(1.15rem, 2.2vw, 1.6rem); font-weight: 600; letter-spacing: -.03em; color: var(--muted-2); white-space: nowrap; transition: color var(--dur); display: inline-flex; align-items: center; gap: 56px; }
.marquee__track li::after { content: ''; width: 5px; height: 5px; transform: rotate(45deg); border: 1px solid var(--line-2); }
.marquee__track li:hover { color: var(--cyan); }
@keyframes marquee { to { transform: translateX(-50%); } }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.metric { padding: 8px 28px 8px 0; border-top: 1px solid var(--line-2); padding-top: 22px; }
.metric + .metric { padding-left: 28px; border-left: 1px solid var(--line); }
.metric__label { color: var(--muted); font-size: .86rem; }
.metric__num { font-size: clamp(2.4rem, 4.4vw, 3.9rem); font-weight: 300; letter-spacing: -.05em; line-height: 1.1; font-variant-numeric: tabular-nums; margin-block: 8px 6px; }
.metric__delta { font-size: .82rem; color: var(--muted-2); }
.metric__delta.up { color: var(--ok); }
.proof .fine { margin-top: 28px; }

/* ------------------------------------------------------------ sections */
.sec { padding-block: clamp(64px, 8.5vw, 116px); position: relative; }
.sec__head { display: flex; flex-direction: column; gap: 20px; align-items: flex-start; margin-bottom: clamp(36px, 5vw, 64px); }
.sec__head--row { flex-direction: row; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 24px; }
.sec__head--row > div { display: flex; flex-direction: column; gap: 20px; }

/* card + spotlight */
.card, .sim__card, .calc__card { position: relative; border: 1px solid var(--line); border-radius: var(--r-lg); background: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .008)); overflow: hidden; }
.spot::before { content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .35s; background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(158, 231, 255, .10), transparent 60%); }
.spot:hover::before { opacity: 1; }
.spot > * { position: relative; }

/* ------------------------------------------------------------ router simulator */
.sim__card { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: clamp(24px, 4vw, 56px); padding: clamp(22px, 3.4vw, 44px); }
.sim__left { display: flex; flex-direction: column; gap: 26px; }
.ctl { display: flex; flex-direction: column; gap: 12px; }
.ctl__label { font-family: var(--ff-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-2); }
.flow { display: flex; flex-direction: column; align-items: flex-start; margin-top: 6px; }
.flow__req { max-width: 100%; padding: 14px 16px; border: 1px solid var(--line-2); border-radius: 14px 14px 14px 4px; background: var(--panel-2); }
.flow__k { display: block; font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 4px; }
.flow__req p { font-size: .95rem; color: var(--fg); min-height: 3em; }
.flow__wire { position: relative; width: 2px; height: 48px; margin-left: 30px; background: repeating-linear-gradient(180deg, var(--line-2) 0 4px, transparent 4px 8px); }
.flow__wire i { position: absolute; left: -3px; top: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 12px var(--gold); animation: drop 1.6s var(--ease) infinite; }
@keyframes drop { 0% { transform: translateY(0); opacity: 0; } 15% { opacity: 1; } 100% { transform: translateY(44px); opacity: 0; } }
.flow__router { position: relative; margin-left: 4px; width: 84px; height: 84px; border-radius: 22px; display: grid; place-items: center; background: #101216; border: 1px solid var(--line-2); box-shadow: 0 0 0 1px rgba(158, 231, 255, .08), 0 0 40px -6px rgba(158, 231, 255, .35); }
.flow__router img { width: 57px; height: 63px; }
.flow__router::after { content: ''; position: absolute; inset: -9px; border-radius: 28px; border: 1px dashed rgba(158, 231, 255, .3); animation: spin 18s linear infinite; }
.flow__router.pulse { animation: routerPulse .8s var(--ease); }
@keyframes routerPulse { 40% { box-shadow: 0 0 0 1px rgba(158, 231, 255, .4), 0 0 60px 4px rgba(255, 207, 107, .45); } }
@keyframes spin { to { transform: rotate(360deg); } }

.sim__right { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.rank { display: flex; flex-direction: column; gap: 10px; }
.rank__row { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: center; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255, 255, 255, .02); transition: border-color .45s var(--ease), background .45s var(--ease), opacity .45s, transform .45s var(--ease); animation: rowIn .5s var(--ease) both; animation-delay: calc(var(--i, 0) * 70ms); }
@keyframes rowIn { from { opacity: 0; transform: translateY(10px); } }
.rank__row--routed { border-color: var(--gold); background: linear-gradient(90deg, rgba(255, 207, 107, .1), rgba(255, 207, 107, .02)); box-shadow: 0 0 0 1px rgba(255, 207, 107, .18), 0 10px 40px -14px rgba(255, 207, 107, .45); }
.rank__row--skip { opacity: .5; }
.rank__name { font-weight: 600; letter-spacing: -.02em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.rank__slug { grid-column: 1; font-family: var(--ff-mono); font-size: .74rem; color: var(--muted-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank__badge { font-family: var(--ff-mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--muted); }
.rank__row--routed .rank__badge { background: var(--gold); color: #000; border-color: var(--gold); font-weight: 600; }
.rank__price { grid-column: 2; grid-row: 1; font-family: var(--ff-mono); font-size: .8rem; color: var(--fg-2); text-align: right; font-variant-numeric: tabular-nums; }
.rank__fit { grid-column: 2; grid-row: 2; display: flex; align-items: center; gap: 8px; justify-content: flex-end; font-family: var(--ff-mono); font-size: .7rem; color: var(--muted-2); }
.rank__fit i { position: relative; width: 84px; height: 4px; border-radius: 4px; background: var(--line-2); overflow: hidden; }
.rank__fit i::after { content: ''; position: absolute; inset: 0; width: var(--fit, 50%); background: var(--cyan); border-radius: 4px; transform-origin: 0 50%; animation: fill .9s var(--ease) both; }
.rank__row--routed .rank__fit i::after { background: var(--gold); }
@keyframes fill { from { transform: scaleX(0); } }

/* ------------------------------------------------------------ code windows */
.code, .term { border: 1px solid var(--line); border-radius: var(--r-lg); background: #07090c; overflow: hidden; min-width: 0; }
.code__bar, .term__bar { display: flex; align-items: center; gap: 14px; padding: 8px 10px 8px 16px; border-bottom: 1px solid var(--line); background: var(--panel); min-height: 46px; }
.code__dots { display: inline-flex; gap: 6px; }
.code__dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-2); }
.code__name, .term__name { font-family: var(--ff-mono); font-size: .74rem; color: var(--muted); margin-right: auto; }
.term__step { font-family: var(--ff-mono); font-size: .7rem; color: var(--gold); }
.code pre, .term pre { margin: 0; padding: 18px 20px; overflow-x: auto; font-size: .82rem; line-height: 1.75; color: var(--fg-2); tab-size: 2; }
.code--lg pre { font-size: .84rem; }
.code code, .term code { font-family: var(--ff-mono); }
.tk-s { color: #a6e3b4; } .tk-n { color: var(--gold); } .tk-k { color: var(--cyan); } .tk-c { color: var(--muted-2); font-style: italic; } .tk-p { color: var(--muted); } .tk-f { color: #f0a6ff; } .tk-ok { color: var(--ok); } .tk-bad { color: var(--danger); }
.tk-add { display: inline-block; width: 100%; background: rgba(126, 224, 165, .09); box-shadow: -20px 0 0 rgba(126, 224, 165, .09); }
.tk-del { display: inline-block; width: 100%; background: rgba(255, 138, 138, .09); box-shadow: -20px 0 0 rgba(255, 138, 138, .09); text-decoration: line-through; text-decoration-color: rgba(255, 138, 138, .5); }

/* ------------------------------------------------------------ story (pinned) */
.story { position: relative; height: 430vh; background: linear-gradient(180deg, #000, #04060a 50%, #000); border-block: 1px solid var(--line); }
.story__pin { position: sticky; top: 0; height: 100dvh; display: flex; align-items: center; padding-top: var(--nav-h); }
.story__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.story__left { display: flex; flex-direction: column; gap: 22px; }
.steps { display: flex; flex-direction: column; margin-top: 10px; }
.step { position: relative; padding: 4px 0 4px 32px; border-left: 1px solid var(--line-2); opacity: .42; transition: opacity .45s var(--ease); }
.step::before { content: ''; position: absolute; left: -1px; top: 0; bottom: 0; width: 2px; background: var(--cyan); transform: scaleY(0); transform-origin: 0 0; transition: transform .5s var(--ease); }
.step.is-active { opacity: 1; }
.step.is-active::before { transform: scaleY(1); }
.step__btn { display: block; width: 100%; text-align: left; padding: 12px 0; min-height: 44px; }
.step__n { font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .12em; color: var(--muted-2); }
.step.is-active .step__n { color: var(--gold); }
.step__t { display: block; font-size: 1.25rem; font-weight: 500; letter-spacing: -.02em; margin-block: 2px 4px; }
.step__d { color: var(--muted); font-size: .95rem; max-width: 46ch; max-height: 0; overflow: hidden; opacity: 0; transition: max-height .55s var(--ease), opacity .45s; }
.step.is-active .step__d { max-height: 8em; opacity: 1; padding-bottom: 8px; }
.step__code { display: none; }
.term { min-height: 420px; display: flex; flex-direction: column; box-shadow: 0 40px 120px -40px rgba(158, 231, 255, .22); }
.term pre { flex: 1; }
.term code.swap { animation: swap .5s var(--ease); }
@keyframes swap { from { opacity: 0; transform: translateY(8px); } }
.term__rail { height: 3px; background: var(--line); }
.term__rail i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--gold)); transform-origin: 0 50%; transform: scaleX(0); }

/* ------------------------------------------------------------ bento */
.bento__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.bento .card { padding: 28px; display: flex; flex-direction: column; gap: 12px; min-height: 240px; transition: border-color var(--dur), transform .5s var(--ease); }
.bento .card:hover { border-color: var(--line-2); transform: translateY(-3px); }
.bento .card > .ic--lg { margin-bottom: 10px; }
.bento .card p { color: var(--muted); font-size: .94rem; }
.b-wide { grid-column: span 2; }
.bento .card .tags { margin-top: auto; padding-top: 16px; }
.chain { margin-top: auto; padding-top: 18px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.chain .ic { width: 16px; height: 16px; color: var(--muted-2); }
.chain__n { font-family: var(--ff-mono); font-size: .74rem; padding: 6px 10px; border-radius: 9px; border: 1px solid var(--line-2); color: var(--fg-2); white-space: nowrap; }
.chain__n b { font-weight: 500; color: var(--muted); margin-right: 6px; }
.chain__n--bad { border-color: rgba(255, 138, 138, .45); color: var(--danger); }
.chain__n--ok { border-color: rgba(126, 224, 165, .45); color: var(--ok); }
.diff { margin-top: auto; padding-top: 18px; display: flex; flex-direction: column; gap: 4px; font-size: .78rem; }
.diff__l { display: flex; gap: 12px; padding: 6px 12px; border-radius: 8px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.diff__l--del { background: rgba(255, 138, 138, .08); color: #ffb3b3; }
.diff__l--add { background: rgba(126, 224, 165, .09); color: #b9f3d0; }
.diff__l span { opacity: .8; }
.bars { margin-top: auto; padding-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.bars__row { display: grid; grid-template-columns: 96px 1fr 44px; align-items: center; gap: 12px; font-size: .8rem; color: var(--muted); }
.bars__row i { position: relative; height: 8px; border-radius: 8px; background: var(--line); overflow: hidden; }
.bars__row i::after { content: ''; position: absolute; inset: 0; width: var(--w); border-radius: 8px; background: var(--line-2); transform-origin: 0 50%; }
.bars__row--lb i::after { background: linear-gradient(90deg, var(--cyan), var(--gold)); }
.bars__row b { font-family: var(--ff-mono); font-weight: 500; text-align: right; color: var(--fg-2); }
.codes { margin-top: auto; padding-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.codes li { display: inline-flex; align-items: baseline; gap: 8px; padding: 6px 10px; border: 1px solid var(--line-2); border-radius: 9px; font-size: .74rem; color: var(--muted); }
.codes b { font-family: var(--ff-mono); color: var(--fg); }
.codes .hot { border-color: rgba(255, 207, 107, .45); }
.codes .hot b { color: var(--gold); }

/* ------------------------------------------------------------ catalog (swiper) */
.chips--filters { margin-bottom: 36px; }
.cat__wrap { position: relative; }
.cat { overflow: hidden; padding-block: 8px 12px; cursor: grab; }
.cat:active { cursor: grabbing; }
.cat .swiper-slide { width: min(370px, 84vw); height: auto; }
.mcard { position: relative; height: 100%; min-height: 330px; display: flex; flex-direction: column; gap: 14px; padding: 26px; border: 1px solid var(--line); border-radius: var(--r-lg); background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .01)); overflow: hidden; transition: border-color var(--dur); }
.swiper-slide:hover .mcard { border-color: var(--line-2); }
.mcard__glow { position: absolute; width: 260px; height: 260px; right: -90px; top: -90px; border-radius: 50%; background: radial-gradient(circle, rgba(158, 231, 255, .2), transparent 65%); pointer-events: none; }
.mcard[data-role="image"] .mcard__glow { background: radial-gradient(circle, rgba(255, 207, 107, .2), transparent 65%); }
.mcard__wm { position: absolute; right: -10px; bottom: -22px; font-size: 6.4rem; font-weight: 700; letter-spacing: -.06em; color: rgba(255, 255, 255, .045); white-space: nowrap; pointer-events: none; user-select: none; }
.mcard__top, .mcard__name, .mcard__ctx, .mcard__prices, .mcard__slug { position: relative; z-index: 1; }
.mcard__top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.mcard__prov { font-family: var(--ff-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.mcard__role { font-size: .72rem; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--fg-2); }
.mcard__name { font-size: 1.55rem; font-weight: 500; letter-spacing: -.035em; line-height: 1.1; margin-top: 6px; }
.mcard__ctx { font-family: var(--ff-mono); font-size: .76rem; color: var(--muted-2); }
.mcard__prices { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.mcard__prices span { display: block; font-size: .7rem; color: var(--muted-2); }
.mcard__prices b { font-size: 1.35rem; font-weight: 500; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.mcard__slug { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 40px; padding: 0 8px 0 12px; border: 1px solid var(--line); border-radius: 10px; font-family: var(--ff-mono); font-size: .72rem; color: var(--muted); text-align: left; transition: border-color var(--dur), color var(--dur); }
.mcard__slug:hover { border-color: var(--cyan); color: var(--fg); }
.mcard__slug code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat__ui { display: flex; align-items: center; gap: 24px; margin-top: 20px; }
.cat__bar { position: relative !important; flex: 1; height: 3px !important; left: 0 !important; bottom: auto !important; width: auto !important; background: var(--line); border-radius: 3px; }
.cat__bar .swiper-scrollbar-drag { background: linear-gradient(90deg, var(--cyan), var(--gold)); border-radius: 3px; }
.cat__btns { display: flex; gap: 10px; }
.cat__wrap > .fine { margin-top: 28px; padding-inline: var(--gut); }

/* ------------------------------------------------------------ vertical swiper */
.modal__grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(28px, 6vw, 96px); align-items: center; }
.modal__head { margin-bottom: 0; }
.hint { display: inline-flex; align-items: center; gap: 10px; color: var(--muted-2); font-size: .82rem; font-family: var(--ff-mono); }
.hint .ic { animation: bobUp 1.6s ease-in-out infinite; color: var(--gold); }
@keyframes bobUp { 50% { transform: translateY(-5px); } }
.vs { position: relative; }
.vs__swiper { height: min(560px, 74dvh); min-height: 420px; border: 1px solid var(--line); border-radius: 28px; background: #07090c; overflow: hidden; }
.vs__slide { position: relative; overflow: hidden; display: flex; align-items: flex-end; padding: clamp(24px, 4vw, 48px); padding-right: clamp(64px, 8vw, 96px); }
.vs__glow { position: absolute; width: 90%; aspect-ratio: 1; right: -30%; top: -25%; border-radius: 50%; background: radial-gradient(circle, rgba(158, 231, 255, .22), transparent 62%); pointer-events: none; }
.vs__glow--gold { background: radial-gradient(circle, rgba(255, 207, 107, .2), transparent 62%); }
.vs__num { position: absolute; right: 20px; top: 0; font-family: var(--ff-serif); font-size: clamp(9rem, 20vw, 17rem); line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, .13); user-select: none; pointer-events: none; }
.vs__body { position: relative; display: flex; flex-direction: column; gap: 14px; max-width: 46ch; }
.vs__body h3 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); letter-spacing: -.035em; }
.vs__body p { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tags li { font-family: var(--ff-mono); font-size: .72rem; padding: 5px 10px; border: 1px solid var(--line-2); border-radius: 8px; color: var(--fg-2); background: rgba(255, 255, 255, .02); }
.jobflow { display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.jobflow li { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border: 1px solid var(--line-2); border-radius: 10px; font-size: .76rem; background: rgba(255, 255, 255, .02); overflow-x: auto; white-space: nowrap; }
.jobflow b { font-family: var(--ff-mono); font-size: .66rem; color: #000; background: var(--gold); border-radius: 5px; padding: 1px 6px; }
.jobflow code { color: var(--fg-2); }
.vs__pag { position: absolute !important; right: 20px !important; left: auto !important; top: 50% !important; bottom: auto !important; width: auto !important; transform: translateY(-50%); display: flex; flex-direction: column; gap: 10px; z-index: 5; }
.vs__pag .swiper-pagination-bullet { width: 8px; height: 28px; margin: 0 !important; border-radius: 8px; background: var(--line-2); opacity: 1; transition: background .3s, height .3s var(--ease); }
.vs__pag .swiper-pagination-bullet-active { background: var(--cyan); height: 44px; }
.vs__btns { position: absolute; right: 16px; bottom: 16px; display: flex; gap: 8px; z-index: 6; }
.vs__btns .iconbtn--round { width: 44px; height: 44px; background: rgba(0, 0, 0, .55); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.vs__swiper .swiper-slide { height: 100%; }

/* ------------------------------------------------------------ calculator */
.calc__card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); padding: clamp(24px, 4vw, 52px); }
.calc__form { display: flex; flex-direction: column; gap: 28px; }
.field { display: flex; flex-direction: column; gap: 12px; }
.field__label { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; font-size: .88rem; color: var(--muted); }
.field__label output { font-family: var(--ff-mono); color: var(--cyan); font-size: .95rem; }
.select { position: relative; display: block; }
.select select { width: 100%; appearance: none; -webkit-appearance: none; min-height: 52px; padding: 0 44px 0 16px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--panel-2); color: var(--fg); font: inherit; font-size: .95rem; cursor: pointer; transition: border-color var(--dur); }
.select select:hover { border-color: var(--muted-2); }
.select .ic { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); pointer-events: none; color: var(--muted); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 6px; background: linear-gradient(90deg, var(--cyan) var(--p, 0%), var(--line-2) var(--p, 0%)); cursor: pointer; margin: 12px 0; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%; background: #fff; border: 5px solid var(--bg); box-shadow: 0 0 0 2px var(--cyan), 0 4px 16px rgba(158, 231, 255, .5); transition: transform .2s var(--ease); }
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.12); }
input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 5px solid var(--bg); box-shadow: 0 0 0 2px var(--cyan); }
.calc__result { display: flex; flex-direction: column; gap: 28px; justify-content: center; padding: clamp(20px, 3vw, 36px); border-radius: 20px; border: 1px solid var(--line); background: radial-gradient(120% 90% at 100% 0%, rgba(158, 231, 255, .09), transparent 60%), var(--panel); }
.cmp { display: flex; flex-direction: column; gap: 18px; }
.cmp__row { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; align-items: baseline; font-size: .9rem; color: var(--muted); }
.cmp__row b { font-size: 1.5rem; font-weight: 500; letter-spacing: -.03em; color: var(--fg); font-variant-numeric: tabular-nums; }
.cmp__row i { grid-column: 1 / -1; position: relative; height: 10px; border-radius: 10px; background: var(--line); overflow: hidden; }
.cmp__row i::after { content: ''; position: absolute; inset: 0; width: var(--w); border-radius: 10px; background: var(--line-2); transition: width .6s var(--ease); }
.cmp__row--lb i::after { background: linear-gradient(90deg, var(--cyan), var(--gold)); }
.save { padding-top: 24px; border-top: 1px dashed var(--line-2); }
.save__label { font-family: var(--ff-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-2); }
.save__num { font-size: clamp(2.6rem, 5vw, 4rem); font-weight: 300; letter-spacing: -.05em; line-height: 1.1; color: var(--gold); font-variant-numeric: tabular-nums; }
.save__sub { color: var(--muted); font-size: .9rem; }
.save__sub span:first-child { color: var(--fg-2); font-family: var(--ff-mono); }

/* ------------------------------------------------------------ developers */
.dev__grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 80px); align-items: center; }
.dev__grid .sec__head { margin-bottom: 0; }
.checks { display: flex; flex-direction: column; gap: 12px; color: var(--fg-2); font-size: .95rem; }
.checks li { display: flex; align-items: flex-start; gap: 12px; }
.checks .ic { color: var(--ok); margin-top: 3px; }
.dev__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.tabs { display: inline-flex; gap: 2px; margin-right: auto; overflow-x: auto; scrollbar-width: none; }
.tabs button { min-height: 34px; padding: 0 12px; border-radius: 8px; font-family: var(--ff-mono); font-size: .74rem; color: var(--muted); transition: color var(--dur), background var(--dur); }
.tabs button:hover { color: var(--fg); }
.tabs button[aria-selected="true"] { background: rgba(158, 231, 255, .1); color: var(--cyan); }
.code__resp { border-top: 1px solid var(--line); background: #05070a; }
.code__resp-l { display: block; padding: 10px 20px 0; font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-2); }
.code__resp pre { padding-top: 6px; font-size: .78rem; }

/* ------------------------------------------------------------ CTA + footer */
.cta { padding-block: 0 clamp(72px, 10vw, 140px); }
.cta__card { position: relative; overflow: hidden; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 24px; padding: clamp(48px, 8vw, 110px) var(--gut); border: 1px solid var(--line-2); border-radius: var(--r-xl); background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .008)), #030405; isolation: isolate; }
.cta__card::before { content: ''; position: absolute; inset: 0; z-index: -1; background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px); background-size: 56px 56px; -webkit-mask-image: radial-gradient(ellipse 60% 70% at 50% 0%, #000, transparent 75%); mask-image: radial-gradient(ellipse 60% 70% at 50% 0%, #000, transparent 75%); }
.cta__glow { position: absolute; z-index: -1; width: 70%; aspect-ratio: 2; left: 15%; top: -40%; border-radius: 50%; background: radial-gradient(circle, rgba(158, 231, 255, .3), transparent 65%); filter: blur(30px); }
.cta__mark { width: 57px; height: 63px; border-radius: 12px; filter: drop-shadow(0 0 24px rgba(158, 231, 255, .55)); }
.cta__card .hero__cta { justify-content: center; }
.foot { border-top: 1px solid var(--line); padding-block: 48px 28px; background: #000; }
.foot__in { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 28px; }
.foot__brand { display: flex; flex-direction: column; gap: 14px; }
.foot__brand p { color: var(--muted); font-size: .9rem; max-width: 34ch; }
.foot__links { display: flex; gap: 8px; }
.foot__links a { padding: 10px 14px; color: var(--muted); border-radius: 10px; min-height: 44px; transition: color var(--dur), background var(--dur); }
.foot__links a:hover { color: var(--fg); background: rgba(255, 255, 255, .06); }
.foot__status { display: inline-flex; align-items: center; gap: 12px; color: var(--muted); font-size: .86rem; min-height: 44px; }
.foot__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: .8rem; }
.foot__concept { font-family: var(--ff-mono); font-size: .72rem; letter-spacing: .04em; }

.toast { position: fixed; left: 50%; bottom: 28px; z-index: 300; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; padding: 12px 18px; border-radius: 12px; background: var(--fg); color: #000; font-size: .88rem; font-weight: 600; transition: opacity .3s, transform .4s var(--ease); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ------------------------------------------------------------ reveal */
.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.js [data-reveal].in { opacity: 1; transform: none; }

/* ------------------------------------------------------------ responsive */
@media (max-width: 1100px) {
  .bento__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics { grid-template-columns: repeat(2, 1fr); row-gap: 8px; }
  .metric:nth-child(3) { padding-left: 0; border-left: 0; }
}
@media (max-width: 999px) {
  .hero__in { grid-template-columns: minmax(0, 1fr); min-height: 0; padding-bottom: 96px; gap: 8px; }
  .hero__viz { min-height: 440px; order: 2; }
  .hero__copy { order: 1; }
  .modal__grid, .dev__grid, .sim__card, .calc__card { grid-template-columns: minmax(0, 1fr); }
  .nav__signin { display: none; }
  .nav__links { position: fixed; left: var(--gut); right: var(--gut); top: calc(var(--nav-h) + 4px); flex-direction: column; align-items: stretch; gap: 2px; padding: 10px; border: 1px solid var(--line-2); border-radius: 18px; background: rgba(8, 10, 13, .985); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); opacity: 0; transform: translateY(-8px); pointer-events: none; transition: opacity .25s, transform .3s var(--ease); }
  .nav__links a { padding: 14px; font-size: 1rem; min-height: 48px; }
  .nav__links .nav__mcta { display: flex; margin-top: 6px; background: var(--fg); color: #000; justify-content: center; }
  .nav__links .nav__mcta:hover { background: #dff7ff; color: #000; }
  .nav__links.open { opacity: 1; transform: none; pointer-events: auto; }
  .menu { display: inline-grid; }
}
@media (max-width: 899px) {
  /* story becomes a plain stacked list on tablet/phone: no pinning */
  .story { height: auto; }
  .story__pin { position: static; height: auto; padding-block: 88px; }
  .story__grid { grid-template-columns: minmax(0, 1fr); }
  .story__right { display: none; }
  .step { opacity: 1; padding-bottom: 18px; }
  .step::before { transform: scaleY(1); opacity: .4; }
  .step__d { max-height: none; opacity: 1; }
  .step__code { display: block; margin: 8px 0 8px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #07090c; font-size: .74rem; line-height: 1.7; color: var(--fg-2); overflow-x: auto; white-space: pre; }
  .step__btn { pointer-events: none; }
}
@media (max-width: 720px) {
  .bento__grid { grid-template-columns: 1fr; }
  .b-wide { grid-column: auto; }
  .bento .card { min-height: 0; padding: 24px; }
  .hero__facts { gap: 18px; flex-wrap: wrap; }
  .endpoint { font-size: .74rem; }
  .scrollcue { display: none; }
  .hero__viz { min-height: 400px; }
  .mcard__wm { font-size: 4.6rem; }
  .vs__swiper { height: 520px; }
  .bars__row { grid-template-columns: 78px 1fr 40px; }
  .foot__in, .foot__legal { flex-direction: column; }
}
@media (max-width: 520px) {
  .metrics { grid-template-columns: 1fr 1fr; }
  .metric, .metric + .metric { padding-inline: 0 12px; border-left: 0; }
  .metric:nth-child(even) { padding-left: 12px; border-left: 1px solid var(--line); }
  .brand__txt small { display: none; }
  .nav__cta { display: none; }
  .lang span { display: none; }
  .lang { padding: 0 12px; }
  .btn--lg { width: 100%; }
  .hero__cta { width: 100%; }
  .seg button { flex: 1; padding: 0 10px; }
}

/* ------------------------------------------------------------ reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
  .marquee__track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; gap: 24px 40px; }
  .marquee { -webkit-mask-image: none; mask-image: none; }
  .story { height: auto; }
  .story__pin { position: static; height: auto; padding-block: 88px; }
}

/* JS adds .story--static when pinning is off (reduced motion): show every step + its code, stacked */
.story--static { height: auto; }
.story--static .story__pin { position: static; height: auto; padding-block: 88px; }
.story--static .story__grid { grid-template-columns: minmax(0, 1fr); }
.story--static .story__right { display: none; }
.story--static .step { opacity: 1; padding-bottom: 18px; }
.story--static .step::before { transform: scaleY(1); opacity: .4; }
.story--static .step__d { max-height: none; opacity: 1; }
.story--static .step__code { display: block; margin: 8px 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #07090c; font-size: .74rem; line-height: 1.7; color: var(--fg-2); overflow-x: auto; white-space: pre; }
.story--static .step__btn { pointer-events: none; }