/* 码上省 · 墨白编辑室。米白、墨绿、细线与清晰的阅读节奏。 */
@font-face {
  font-family: "Noto Sans SC";
  src: url("assets/fonts/noto-sans-sc.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Bodoni Moda";
  src: url("assets/fonts/bodoni-moda.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
:root {
  color-scheme: light;
  --paper: #f8f7f3;
  --surface: #f0f0e9;
  --ink: #111714;
  --muted: #606762;
  --green: #245641;
  --green-deep: #193f30;
  --green-tint: #eaf0e8;
  --line: #d5d8d0;
  --strong-line: #747e75;
  --white: #fffefa;
  --font-cjk: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: Arial, "Noto Sans SC", sans-serif;
  --font-display: "Bodoni Moda", "Times New Roman", serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 400 16px/1.75 var(--font-cjk); -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button { color: inherit; cursor: pointer; }
a { color: inherit; text-underline-offset: 4px; }
img, svg { display: block; max-width: 100%; }
svg { flex-shrink: 0; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.35; font-weight: 750; }
h2 { letter-spacing: -.025em; }
[hidden] { display: none !important; }
::selection { color: var(--white); background: var(--green); }
:focus-visible { outline: 2px solid var(--green); outline-offset: 5px; }
.wrap { width: min(1268px, calc(100% - 170px)); margin-inline: auto; }
.skip { position: fixed; top: 12px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--green); color: var(--white); transform: translateY(-160%); }
.skip:focus { transform: none; }
.lead { color: var(--muted); max-width: 64ch; font-size: 16px; margin-top: 14px; }
.fine { color: var(--muted); font-size: 13px; line-height: 1.8; margin-top: 14px; }
.eyebrow { color: var(--green); font-size: 13px; font-weight: 650; letter-spacing: .09em; margin-bottom: 17px; }
section h2 { font-size: clamp(27px, 2.6vw, 36px); }
/* Controls */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 48px; padding: 12px 24px; border: 1px solid transparent; border-radius: 3px; font-size: 16px; font-weight: 650; text-decoration: none; white-space: nowrap; transition: background-color .2s, border-color .2s, transform .2s; }
.btn svg, .text-link svg { width: 21px; height: 21px; transform: rotate(45deg); transition: transform .2s var(--ease); }
.btn:hover svg, .text-link:hover svg { transform: translateX(3px) rotate(45deg); }
.btn:active { transform: translateY(1px); }
.btn--brand, .btn--ink { background: var(--green); color: var(--white); }
.btn--brand:hover, .btn--ink:hover { background: var(--green-deep); }
.btn--light { background: var(--paper); color: var(--green-deep); }
.btn--light:hover { background: #e8ede5; }
.btn--lg { min-height: 62px; padding: 16px 30px; font-size: 18px; }
.btn--sm { min-height: 42px; padding: 8px 18px; font-size: 14px; }
.code-chip { display: inline-flex; align-items: center; justify-content: center; gap: 13px; min-height: 46px; padding: 10px 17px; border-radius: 3px; background: transparent; font-size: 14px; transition: background-color .2s, border-color .2s; }
.code-chip strong { font-family: var(--font-num); font-size: 17px; font-weight: 650; letter-spacing: .02em; }
.code-chip svg { width: 19px; height: 19px; }
.code-chip--line { border: 1px solid var(--green); }
.code-chip--line:hover, .code-chip--line.is-copied { background: var(--green-tint); }
.code-chip--ghost { border: 1px solid #8da997; color: var(--paper); }
.code-chip--ghost:hover { background: #315f49; }
.copy-state { font-size: 14px; white-space: nowrap; }
.text-link { display: inline-flex; align-items: center; gap: 16px; min-height: 44px; font-size: 14px; color: var(--green); font-weight: 650; }
/* Header */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--paper); }
.topbar-in { min-height: 76px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; text-decoration: none; }
.brand img { width: 38px; height: 38px; }
.brand-name { font-size: 26px; letter-spacing: .025em; font-weight: 850; }
.brand-sub { padding-left: 15px; border-left: 1px solid var(--line); color: var(--muted); font-size: 14px; margin-left: 2px; }
.topnav { display: flex; align-items: center; gap: 28px; margin-left: auto; white-space: nowrap; }
.topnav a { padding-block: 12px; font-size: 14px; font-weight: 600; text-decoration: none; }
.topnav a:hover { color: var(--green); text-decoration: underline; }
.topbar-act { margin-left: 36px; }
/* Hero: one flat surface; the calculator is separated by a single rule. */
.hero-in { display: grid; grid-template-columns: 53% 47%; padding-block: 47px 34px; align-items: start; }
.hero-copy { min-width: 0; padding-right: 34px; }
.hero-strip { display: flex; align-items: center; gap: 16px; font-family: var(--font-num); color: var(--muted); font-size: 13px; letter-spacing: .35em; line-height: 1.5; }
.okx-logo { display: block; height: auto; }
.hero-strip .okx-logo { width: 84px; }
.okx-logo--why { width: 108px; margin-bottom: 10px; }
.okx-logo--final { width: 96px; margin-bottom: 22px; }
.hero h1 { margin-top: 10px; }
.hero-title { display: block; font-size: clamp(36px, 4.93vw, 70px); line-height: 1.2; letter-spacing: -.055em; font-weight: 900; }
.hero-rate-label { display: block; margin-top: 22px; font-size: 38px; font-weight: 650; letter-spacing: -.035em; }
.big-num { display: block; width: fit-content; font-family: var(--font-display); font-size: clamp(170px, 20vw, 284px); font-optical-sizing: auto; font-weight: 400; line-height: .75; letter-spacing: -.045em; color: var(--green); margin: 8px 0 0 -10px; }
.big-num > span { font-size: .64em; letter-spacing: -.06em; margin-left: .025em; }
.hero-lede { margin-top: 14px; font-size: 18px; color: var(--muted); line-height: 1.7; }
.hero-lede > span { margin-inline: 5px; }
.hero-cta { display: flex; align-items: center; gap: 16px; margin-top: 32px; }
.hero-cta .btn { min-width: 238px; }
.hero-cta .code-chip { min-height: 62px; padding-inline: 23px; }
.hero-note { color: var(--muted); font-size: 13px; line-height: 1.85; margin-top: 24px; max-width: 45em; }
/* Calculator */
.receipt { border-left: 1px solid var(--line); padding: 0 0 0 64px; min-width: 0; }
.receipt-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.receipt h2 { font-size: 21px; font-weight: 750; letter-spacing: -.04em; }
.seg { display: inline-flex; flex-shrink: 0; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.seg button { border: 0; background: transparent; min-height: 36px; padding: 5px 19px; color: var(--muted); font-size: 14px; }
.seg button[aria-checked="true"] { background: var(--green); color: var(--white); font-weight: 650; }
.seg button:focus-visible { outline-offset: -4px; outline-color: var(--strong-line); }
.calc-intro { color: var(--muted); font-size: 14px; margin-top: 0; }
.field-label { display: block; font-size: 14px; margin-top: 20px; }
.vol-row { display: flex; align-items: baseline; gap: 12px; margin-top: 1px; }
.vol-out { font: 700 54px/1.1 var(--font-num); letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.unit { font: 400 19px var(--font-num); }
.range { appearance: none; -webkit-appearance: none; width: 100%; height: 36px; margin: 3px 0 4px; background: transparent; cursor: pointer; }
.range::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--green) var(--p, 50%), var(--line) var(--p, 50%)); }
.range::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 22px; height: 22px; margin-top: -9px; border-radius: 50%; border: 3px solid var(--green); background: var(--paper); }
.range::-moz-range-track { height: 4px; background: var(--line); }
.range::-moz-range-progress { height: 4px; background: var(--green); }
.range::-moz-range-thumb { width: 17px; height: 17px; border-radius: 50%; border: 3px solid var(--green); background: var(--paper); }
.range:focus-visible { outline-offset: 2px; }
.presets { display: flex; gap: 12px; }
.presets button { border: 1px solid var(--line); background: transparent; border-radius: 3px; min-height: 36px; padding: 4px 19px; font-size: 14px; white-space: nowrap; }
.presets button:hover { border-color: var(--green); }
.presets button[aria-pressed="true"] { border-color: var(--green); color: var(--green); font-weight: 700; }
.lines { margin: 25px 0 0; padding: 19px 0; border-block: 1px solid var(--line); display: grid; gap: 7px; }
.lines div { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; }
.lines dt { color: var(--muted); }
.lines dt span { font-size: 13px; margin-left: 4px; }
.lines dd { margin: 0; white-space: nowrap; font-family: var(--font-num); font-weight: 500; font-variant-numeric: tabular-nums; }
.lines .minus dd { color: var(--green); }
.total { padding-top: 18px; }
.total-k { font-size: 18px; font-weight: 650; }
.total-k > span { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 8px; }
.total-v { font: 750 80px/1.04 var(--font-num); letter-spacing: -.055em; color: var(--green); font-variant-numeric: tabular-nums; margin-top: 4px; }
.total-v small { color: var(--ink); font-size: 22px; letter-spacing: 0; margin-left: 12px; font-weight: 400; }
.total-cny { color: var(--muted); font-size: 13px; margin-top: 3px; }
.receipt > .fine { margin-top: 14px; font-size: 12px; }
.total-v.bump { animation: bump .3s var(--ease); }
@keyframes bump { 50% { transform: translateY(-2px); } }
/* Comparison */
.compare { padding-bottom: 74px; }
.compare > .wrap { border-top: 1px solid var(--strong-line); padding-top: 32px; }
.chapter-title { display: flex; align-items: center; gap: 28px; }
.section-index { display: inline-flex; align-items: center; gap: 14px; font: 600 18px var(--font-num); color: var(--green); letter-spacing: 0; flex-shrink: 0; }
.section-index::after { content: ""; display: block; width: 28px; height: 1px; background: var(--strong-line); }
.compare .lead { margin: 7px 0 0 88px; max-width: none; font-size: 14px; }
.table-scroll { margin-top: 24px; border: 1px solid var(--line); overflow-x: auto; }
.ctable { width: 100%; border-collapse: collapse; font-size: 14px; table-layout: fixed; }
.ctable th, .ctable td { padding: 10px 24px; text-align: center; border-bottom: 1px solid var(--line); }
.ctable th + *, .ctable td + * { border-left: 1px solid var(--line); }
.ctable th:first-child { text-align: left; width: 34%; }
.ctable thead th { background: var(--surface); font-weight: 600; font-size: 13px; }
.ctable tbody th { font-weight: 450; }
.ctable tbody tr:last-child > * { border-bottom: 0; }
.ctable td { font-family: var(--font-num); font-variant-numeric: tabular-nums; }
.ctable .col-win { color: var(--green); font-weight: 650; }
.ctable s { color: var(--muted); font-size: 12px; font-weight: 400; margin-right: 15px; }
.ctable tbody tr:hover { background: #f0f2eb; }
/* Editorial sections */
.once, .plays, .buy, .steps, .why, .dl, .faq { padding-block: 76px; border-top: 1px solid var(--line); }
.once { background: var(--surface); }
.once > .wrap > .lead { max-width: 760px; }
.paths { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; margin-top: 38px; }
.path { padding: 22px 0 0; border-top: 2px solid var(--green); }
.path--no { border-color: #a5aba2; }
.path-when { font-size: 13px; color: var(--green); }
.path--no .path-when { color: var(--muted); }
.path h3 { font-size: 23px; margin-top: 9px; font-weight: 650; }
.path ul { list-style: none; padding: 0; margin: 21px 0 0; display: grid; gap: 12px; }
.path li { display: flex; align-items: start; gap: 10px; color: var(--muted); font-size: 15px; }
.path li svg { width: 19px; height: 19px; margin-top: 4px; color: var(--green); }
.path--no li svg { color: var(--muted); }
.once-cta { display: flex; align-items: center; gap: 25px; margin-top: 38px; }
.once-cta p { color: var(--muted); font-size: 13px; }
.steps-in { display: grid; grid-template-columns: 1.15fr .85fr; gap: 96px; align-items: center; }
.steplist { list-style: none; padding: 0; margin: 35px 0 32px; }
.steplist li { display: grid; grid-template-columns: 40px 1fr; gap: 21px; padding-block: 21px; border-bottom: 1px solid var(--line); }
.steplist li:first-child { padding-top: 0; }
.step-n { font: 400 27px/1.4 var(--font-display); color: var(--green); }
.steplist h3 { font-size: 18px; font-weight: 650; }
.steplist p { color: var(--muted); font-size: 14px; margin-top: 8px; }
.steplist .code-chip { margin-top: 15px; }
.proof { margin: 0; max-width: 440px; padding: 16px; border: 1px solid var(--line); background: var(--surface); }
.proof img { width: 100%; height: auto; }
.proof figcaption { font-size: 15px; font-weight: 600; margin-top: 20px; }
.proof figcaption span { display: inline-block; font-size: 12px; font-weight: 400; color: var(--muted); margin-top: 4px; }
.assure { border-top: 1px solid var(--line); }
.assure-in { list-style: none; padding: 21px 0; margin-block: 0; display: flex; justify-content: space-between; gap: 18px; font-size: 13px; color: var(--muted); }
.assure li { display: flex; align-items: center; gap: 8px; }
.assure svg { width: 18px; height: 18px; color: var(--green); }
/* Platform: open grid with type and dividers, no card pile. */
.bento { margin-top: 40px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 38px; }
.cell { min-width: 0; padding: 26px 0 0; border-top: 1px solid var(--line); }
.cell h3 { font-size: 19px; font-weight: 650; }
.cell p { color: var(--muted); font-size: 14px; margin-top: 10px; }
.cell--scale { grid-column: span 2; padding-top: 12px; }
.cell .scale-num { font: 500 76px/1.2 var(--font-num); color: var(--green); letter-spacing: -.045em; margin: 0; }
.cell .scale-k { font-size: 17px; color: var(--ink); }
.scale-k span { white-space: nowrap; }
.cell .cell-note { font-size: 12px; }
.cell--app { display: grid; grid-template-columns: 48px 1fr; column-gap: 17px; align-content: start; }
.cell--app img { grid-row: span 2; width: 48px; height: 48px; border-radius: 9px; }
.cell--app p { grid-column: 2; }
.cell--sec > svg { width: 25px; height: 25px; color: var(--green); margin-bottom: 13px; }
/* Verification */
/* Download */
.dl-in { max-width: 920px; }
.dl-app { display: flex; align-items: center; gap: 16px; margin-top: 28px; }
.dl-app > img { width: 56px; height: 56px; border-radius: 12px; }
.dl-app .okx-logo { width: 72px; }
.dl-app span { display: block; margin-top: 6px; color: var(--muted); font-size: 13px; }
.dl-tabs { display: inline-flex; gap: 28px; margin-top: 25px; border-bottom: 1px solid var(--line); }
.dl-tabs button { min-height: 48px; padding: 8px 20px; background: transparent; border: 0; border-bottom: 2px solid transparent; color: var(--muted); font-size: 16px; }
.dl-tabs button[aria-selected="true"] { border-color: var(--green); color: var(--green); font-weight: 650; }
.dl-panel { min-height: 166px; }
.dl-panel ol { padding-left: 22px; margin: 25px 0 32px; display: grid; gap: 12px; }
.dl-panel li { padding-left: 8px; font-size: 15px; color: var(--muted); }
.dl-panel li::marker { color: var(--green); font-family: var(--font-num); font-weight: 700; }
/* FAQ */
.faq-in { display: grid; grid-template-columns: .8fr 1.2fr; gap: 76px; align-items: start; }
.faq-heading { position: sticky; top: 120px; }
.faq-heading .text-link { margin-top: 27px; }
.faq-list { border-top: 1px solid var(--strong-line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: start; justify-content: space-between; gap: 24px; list-style: none; cursor: pointer; padding: 21px 0; font-size: 16px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary svg { width: 20px; height: 20px; margin-top: 4px; color: var(--green); transition: transform .2s; }
.faq details[open] summary svg { transform: rotate(45deg); }
.faq summary:hover { color: var(--green); }
.faq details p { color: var(--muted); font-size: 14px; line-height: 1.9; padding: 0 36px 22px 0; }
.faq details a { color: var(--green); margin-left: 5px; }
/* Closing note */
.final { background: var(--green-deep); color: var(--paper); }
.final-in { padding-block: 64px; display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.final h2 { font-size: 38px; font-weight: 600; line-height: 1.5; }
.final-act { display: flex; flex-wrap: wrap; gap: 16px; }
.final .code-chip { min-height: 62px; }
.final :focus-visible { outline-color: var(--paper); }
.foot-in { padding-block: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 52px; color: var(--muted); font-size: 12px; line-height: 1.9; }
.foot-brand { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--green-deep); font-weight: 650; margin-bottom: 5px; }
.foot-brand img { width: 25px; height: 25px; }
/* Mobile utility */
.dock { display: none; }
.toast { position: fixed; z-index: 50; left: 50%; bottom: 32px; max-width: calc(100% - 32px); width: max-content; padding: 13px 22px; border-radius: 4px; color: var(--white); background: var(--green-deep); font-size: 14px; box-shadow: 0 8px 30px #1117141a; pointer-events: none; opacity: 0; transform: translate(-50%, 8px); transition: opacity .2s, transform .2s; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 注册后能做什么 */
.playlist { list-style: none; padding: 0; margin: 38px 0 0; border-top: 1px solid var(--strong-line); }
.playlist li { display: grid; grid-template-columns: 56px minmax(150px, 220px) minmax(0, 1fr) 64px; gap: 8px 28px; align-items: baseline; padding-block: 24px; border-bottom: 1px solid var(--line); }
.play-n { font: 600 18px var(--font-num); color: var(--green); }
.playlist h3 { font-size: 20px; font-weight: 700; letter-spacing: -.02em; }
.playlist p { color: var(--muted); font-size: 15px; max-width: 60ch; }
.play-tag { justify-self: end; font-size: 12px; color: var(--green); border: 1px solid var(--green); border-radius: 3px; padding: 1px 9px; white-space: nowrap; }
.play-tag--up { color: var(--ink); border-color: var(--strong-line); }
.plays-note { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 36px; padding: 28px 32px; background: var(--green-tint); }
.plays-note p { font-size: 16px; max-width: 46em; }
.plays-note strong { color: var(--green-deep); }

/* 第一笔币 */
.buy, .steps { background: var(--surface); }
.buy-in { display: grid; grid-template-columns: 1.2fr .8fr; gap: 84px; align-items: start; }
.ways { margin: 32px 0 0; border-top: 1px solid var(--strong-line); }
.ways > div { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding-block: 20px; border-bottom: 1px solid var(--line); }
.ways dt { font-weight: 700; font-size: 17px; }
.ways dd { margin: 0; color: var(--muted); font-size: 15px; }
.c2c-tips { background: var(--paper); border: 1px solid var(--line); padding: 30px 32px; margin-top: 8px; }
.c2c-tips h3 { font-size: 19px; font-weight: 700; }
.c2c-tips ol { margin: 18px 0 0; padding-left: 22px; display: grid; gap: 12px; }
.c2c-tips li { font-size: 15px; padding-left: 6px; }
.c2c-tips li::marker { color: var(--green); font-family: var(--font-num); font-weight: 700; }
.c2c-tips > p { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.foot-h { grid-column: 1 / -1; color: var(--ink); font-size: 13px; font-weight: 650; }
@media (min-width: 1500px) { .wrap { width: min(1360px, calc(100% - 160px)); } }
@media (max-width: 1250px) {
  .wrap { width: calc(100% - 80px); }
  .brand-sub { display: none; }
  .topbar-act { margin-left: 18px; }
  .hero-in { grid-template-columns: 51% 49%; }
  .hero-copy { padding-right: 28px; }
  .hero-title { font-size: 4vw; }
  .hero-rate-label { font-size: 31px; }
  .receipt { padding-left: 34px; }
  .receipt-head { align-items: start; }
  .receipt h2 { font-size: 18px; }
  .seg button { padding-inline: 13px; }
  .hero-cta { gap: 12px; }
  .hero-cta .btn { min-width: 180px; }
  .hero-cta .code-chip { padding-inline: 14px; gap: 9px; }
  .hero-lede { font-size: 16px; }
  .hero-note { margin-top: 28px; }
  .presets { gap: 9px; }
  .presets button { padding-inline: 14px; }
  .steps-in { gap: 54px; }
}
@media (max-width: 1020px) {
  .topbar-act { margin-left: 0; }
  .hero-in { padding-top: 34px; }
  .hero-title { font-size: 35px; }
  .hero-rate-label { font-size: 28px; }
  .big-num { font-size: clamp(160px, 23vw, 208px); }
  .hero-lede > span { display: block; height: 0; overflow: hidden; }
  .hero-cta { flex-wrap: wrap; margin-top: 25px; }
  .hero-cta .btn, .hero-cta .code-chip { min-height: 52px; width: 100%; }
  .receipt { padding-left: 27px; }
  .receipt-head { flex-wrap: wrap; }
  .seg { margin-top: 3px; }
  .calc-intro { font-size: 13px; }
  .field-label { margin-top: 18px; }
  .vol-out { font-size: 44px; }
  .presets { gap: 7px; }
  .presets button { flex: 1; padding-inline: 8px; }
  .lines dt span { display: block; margin-left: 0; }
  .lines div { align-items: center; }
  .total-v { font-size: 70px; }
  .steps-in, .buy-in { gap: 38px; }
  .paths { gap: 32px; }
  .bento { gap: 25px; }
  .faq-in { gap: 38px; }
  .final-act { max-width: 45%; }
  .final h2 { font-size: 30px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 94px; }
  body { padding-bottom: calc(80px + env(safe-area-inset-bottom)); }
  .wrap { width: calc(100% - 40px); }
  .topbar { border-bottom: 1px solid var(--line); }
  .topbar-in { min-height: 68px; gap: 12px; }
  .brand { gap: 9px; }
  .brand img { width: 30px; height: 30px; }
  .brand-name { font-size: 21px; }
  .topnav { display: none; }
  .topbar-act { margin-left: auto; }
  .hero-in { display: block; padding-block: 31px 40px; }
  .hero-copy { padding: 0; }
  .hero-strip { font-size: 11px; letter-spacing: .28em; gap: 12px; }
  .hero-strip .okx-logo { width: 70px; }
  .okx-logo--why { width: 92px; }
  .okx-logo--final { width: 80px; margin-bottom: 16px; }
  .hero h1 { margin-top: 13px; }
  .hero-title { font-size: clamp(27px, 7.7vw, 44px); letter-spacing: -.05em; }
  .hero-rate-label { font-size: clamp(19px, 6.1vw, 26px); margin-top: 22px; letter-spacing: -.04em; }
  .big-num { font-size: clamp(158px, 50vw, 260px); margin-top: 10px; margin-left: -6px; }
  .hero-lede { font-size: 14px; margin-top: 22px; }
  .hero-lede > span { display: inline; height: auto; }
  .hero-cta { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 23px; }
  .hero-cta .btn, .hero-cta .code-chip { min-height: 54px; width: 100%; }
  .hero-note { font-size: 12px; margin-top: 19px; line-height: 1.9; }
  .receipt { margin-top: 33px; padding: 30px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .receipt-head { flex-wrap: nowrap; align-items: center; gap: 10px; }
  .receipt h2 { font-size: 17px; max-width: 13em; }
  .seg { margin: 0; }
  .seg button { min-height: 44px; padding-inline: 14px; }
  .calc-intro { font-size: 12px; margin-top: 12px; }
  .field-label { font-size: 13px; margin-top: 23px; }
  .vol-out { font-size: 46px; }
  .unit { font-size: 16px; }
  .range { margin-top: 6px; height: 40px; }
  .presets { gap: 10px; }
  .presets button { min-height: 44px; padding-inline: 10px; }
  .lines { margin-top: 24px; padding-block: 18px; }
  .lines div { font-size: 13px; }
  .lines dt span { display: inline; font-size: 11px; margin-left: 5px; }
  .total { padding-top: 23px; }
  .total-k { font-size: 17px; }
  .total-v { font-size: 72px; }
  .total-v small { font-size: 20px; }
  .receipt > .fine { font-size: 12px; }
  .compare { padding-bottom: 44px; }
  .compare > .wrap { padding-top: 28px; }
  section h2 { font-size: 27px; }
  .chapter-title { align-items: start; gap: 15px; }
  .section-index { margin-top: 7px; font-size: 14px; gap: 8px; }
  .section-index::after { width: 13px; }
  .compare .lead { margin: 13px 0 0; font-size: 13px; }
  .table-scroll { margin-top: 21px; }
  .ctable { font-size: 12px; }
  .ctable th, .ctable td { padding: 12px 8px; overflow-wrap: anywhere; }
  .ctable th:first-child { width: 32%; }
  .ctable thead th { font-size: 11px; }
  .ctable s { display: none; }
  .fine { font-size: 12px; }
  .once, .plays, .buy, .steps, .why, .dl, .faq { padding-block: 47px; }
  .eyebrow { margin-bottom: 14px; font-size: 12px; }
  .lead { font-size: 14px; line-height: 1.9; }
  .paths, .steps-in, .buy-in, .faq-in { grid-template-columns: 1fr; gap: 32px; }
  .paths { margin-top: 30px; }
  .path h3 { font-size: 20px; }
  .path li { font-size: 14px; }
  .once-cta { flex-direction: column; align-items: stretch; gap: 16px; margin-top: 30px; }
  .btn--lg { min-height: 54px; font-size: 16px; }
  .steplist { margin-top: 28px; }
  .steplist li { grid-template-columns: 30px 1fr; gap: 15px; }
  .steplist h3 { font-size: 17px; }
  .step-n { font-size: 24px; }
  .steps-main > .btn, .dl .btn { width: 100%; }
  .proof { width: 100%; max-width: 460px; margin-inline: auto; padding: 12px; }
  .proof figcaption { margin-top: 14px; }
  .assure-in { display: grid; gap: 10px; font-size: 12px; padding-block: 20px; }
  .bento { grid-template-columns: 1fr; gap: 22px; margin-top: 29px; }
  .cell { padding-top: 22px; }
  .cell--scale { grid-column: auto; }
  .cell .scale-num { font-size: 62px; }
  .cell .scale-k { font-size: 16px; }
  .cell h3 { font-size: 18px; }
  .cell--sec > svg { float: left; margin-right: 12px; }
  .cell--sec p { clear: both; }
  .dl-panel { min-height: 214px; }
  .dl-panel li { font-size: 14px; }
  .playlist { margin-top: 28px; }
  .playlist li { grid-template-columns: 28px 1fr auto; gap: 6px 12px; padding-block: 20px; }
  .playlist h3 { font-size: 18px; }
  .playlist p { grid-column: 2 / -1; font-size: 14px; grid-row: 2; }
  .play-tag { grid-column: 3; grid-row: 1; }
  .plays-note { flex-direction: column; align-items: stretch; padding: 22px 20px; gap: 18px; margin-top: 28px; }
  .plays-note p { font-size: 14px; }
  .ways > div { grid-template-columns: 1fr; gap: 6px; padding-block: 18px; }
  .ways dd { font-size: 14px; }
  .c2c-tips { padding: 24px 20px; margin-top: 0; }
  .c2c-tips li { font-size: 14px; }
  .faq-heading { position: static; }
  .faq-heading br { display: none; }
  .faq-heading .text-link { margin-top: 12px; }
  .faq summary { font-size: 15px; padding-block: 19px; gap: 15px; }
  .faq details p { padding-right: 0; font-size: 13px; }
  .final-in { padding-block: 44px; flex-direction: column; align-items: stretch; gap: 28px; }
  .final h2 { font-size: 29px; }
  .final-act { max-width: none; display: grid; }
  .final .code-chip { min-height: 54px; }
  .foot-in { grid-template-columns: 1fr; gap: 14px; padding-block: 30px; }
  .foot-brand { font-size: 13px; }
  .dock { display: flex; align-items: center; gap: 12px; position: fixed; z-index: 30; left: 0; right: 0; bottom: 0; border-top: 1px solid var(--line); padding: 12px 20px calc(12px + env(safe-area-inset-bottom)); background: var(--paper); transition: transform .25s var(--ease), visibility .25s; }
  .dock.is-hidden { transform: translateY(110%); visibility: hidden; }
  .dock-code { border: 0; background: transparent; padding: 0 14px 0 0; display: grid; text-align: left; min-height: 46px; }
  .dock-code span { color: var(--muted); font-size: 11px; }
  .dock-code strong { font: 600 18px var(--font-num); color: var(--green); letter-spacing: .02em; }
  .dock .btn { flex: 1; min-height: 48px; padding-inline: 13px; font-size: 14px; }
  .toast { bottom: calc(96px + env(safe-area-inset-bottom)); font-size: 13px; padding-inline: 16px; }
}
@media (max-width: 359px) {
  .wrap { width: calc(100% - 32px); }
  .receipt-head { align-items: start; flex-direction: column; gap: 12px; }
  .hero-lede { font-size: 12px; }
  .lines dt span { display: block; margin-left: 0; }
  .total-k > span { font-size: 11px; }
  .dock { gap: 8px; padding-inline: 16px; }
  .dock .btn { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}