/**
 * SS Membership — Checkout / Signup chrome
 *
 * Consumes the --ssc-* token contract from SS Commerce UX Standard v1.1.
 * Owned per-module (no SSH_Checkout component). Token names are the contract;
 * this file is one of several module implementations of those tokens.
 *
 * Token defaults are declared on .ssm-checkout itself as fallbacks so the
 * module renders correctly even when no theme-level :root tokens exist.
 *
 * Token layering (suite → commerce → module):
 *   --ss-*   suite/Hub tokens (brand accent, text, surfaces). Cascade from theme.
 *   --ssc-*  SS Commerce contract for checkout/level-card chrome. The accent
 *            fallback below derives from the suite accent (--ss-accent) so the
 *            front-end brand color matches the admin/suite accent.
 *   --ssm-*  module-local FE tokens (typography, max-widths) — see assets/style.css.
 *
 * Visual register:
 * - 720px max column, centered
 * - No border-radius
 * - 0.5px borders
 * - Sentence-case headings; CTAs uppercase
 * - Charcoal hero default; theme may override via :root --ssc-* declarations
 */

.ssm-checkout {
    /* ---- token contract + fallbacks (theme/preset :root overrides win) ----
       v0.41.0: brand-carrying defaults now resolve from the active preset's
       shell/preset tokens (same vocabulary the g-sections consume) so the
       checkout adopts whatever preset is painted. Literals are last-resort
       fallbacks for the token-less standalone case only. */
    --ssc-hero-bg:           var(--shell-bg-dark, #1d1d1b);
    --ssc-hero-fg:           var(--shell-text-on-dark, #ffffff);
    --ssc-hero-accent:       var(--shell-accent, var(--ss-accent, #534AB7));
    /* Navy/primary — big serif figures, "then $X starting…" emphasis. */
    --ssc-primary:           var(--preset-primary, var(--shell-h, #1d1d1b));
    --ssc-surface:           var(--shell-card, #ffffff);
    --ssc-surface-2:         var(--shell-surface-warm, var(--shell-bg-warm, #fbfaf8));
    --ssc-surface-fg:        var(--shell-text-body, var(--shell-h, #1d1d1b));
    --ssc-surface-fg-muted:  var(--shell-m, #6c6c68);
    --ssc-surface-fg-faint:  var(--shell-m, #9a9a94);
    --ssc-border:            var(--shell-hairline, #d8d8d4);
    --ssc-hair:              var(--shell-hairline, #e7e5df);
    /* positive / trial-credit / "due today $0" semantic (overridable). */
    --ssc-good:              #3f8f6e;
    /* Checkout CTA = navy #0F2B4C bg + white text (NOT the gold accent).
       Prefer the preset/theme navy primary (--preset-primary → --shell-h,
       both #0F2B4C on the tspkey theme), navy literal as standalone fallback.
       Hover = a darker navy (#0A1F38). White text throughout. */
    --ssc-cta-bg:            var(--preset-primary, var(--shell-h, #0F2B4C));
    --ssc-cta-fg:            #ffffff;
    --ssc-cta-hover-bg:      var(--preset-primary-dark, #0A1F38);
    --ssc-cta-hover-fg:      #ffffff;
    --ssc-error:             #c77878;
    --ssc-success:           #6fb89e;
    /* geometry — tokenized so a squared preset can zero the radius. */
    --ssc-radius:            6px;
    --ssc-radius-sm:         4px;

    max-width: 720px;
    margin: 2rem auto;
    /* Section breathing room top + bottom so the hero doesn't butt the site
       header nor the form the footer (matches mock .co padding:64px 0 90px).
       Left/right stay 1rem. */
    padding: 64px 1rem 90px;
    color: var(--ssc-surface-fg);
    font-family: var(--shell-bf, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
    line-height: 1.5;
    box-sizing: border-box;
}

.ssm-checkout *,
.ssm-checkout *::before,
.ssm-checkout *::after {
    box-sizing: border-box;
}

/* ============================================================ */
/* HERO CARD                                                    */
/* ============================================================ */

.ssm-checkout__hero {
    background: var(--ssc-hero-bg);
    color: var(--ssc-hero-fg);
    padding: 32px;
    border-radius: var(--ssc-radius);
    margin-bottom: 24px;
}

.ssm-checkout__eyebrow {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--ssc-hero-accent);
    margin: 0 0 12px;
    display: block;
}

.ssm-checkout__title {
    font-family: var(--shell-hf, Georgia, serif);
    font-size: 28px;
    font-weight: 500;
    line-height: 1.2;
    color: var(--ssc-hero-fg);
    margin: 0 0 8px;
}

.ssm-checkout__description {
    font-size: 15px;
    color: var(--ssc-hero-fg);
    opacity: 0.85;
    margin: 0 0 24px;
}

.ssm-checkout__hero-divider {
    border: 0;
    border-top: 0.5px solid var(--ssc-hero-fg);
    opacity: 0.15;
    margin: 16px 0;
}

.ssm-checkout__total-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-top: 16px;
}

.ssm-checkout__total-label {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--ssc-hero-fg);
    opacity: 0.7;
}

.ssm-checkout__total-amount {
    font-size: 32px;
    font-weight: 700;
    color: var(--ssc-hero-fg);
}

.ssm-checkout__total-meta {
    display: block;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.7;
    margin-top: 4px;
    text-align: right;
}

/* ============================================================ */
/* FORM SHELL                                                   */
/* ============================================================ */

.ssm-checkout__form {
    background: var(--ssc-surface);
    padding: 0;
}

.ssm-checkout__field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.ssm-checkout__field-row--single {
    grid-template-columns: 1fr;
}

.ssm-checkout__field {
    display: flex;
    flex-direction: column;
}

.ssm-checkout__label {
    font-size: 13px;
    font-weight: 600;
    color: var(--ssc-surface-fg);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.ssm-checkout__label--required::after {
    content: " *";
    color: var(--ssc-error);
}

.ssm-checkout__input,
.ssm-checkout__select {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    font-family: inherit;
    color: var(--ssc-surface-fg);
    background: var(--ssc-surface);
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
    line-height: 1.4;
    transition: border-color 0.15s ease;
}

.ssm-checkout__input:focus,
.ssm-checkout__select:focus {
    outline: none;
    border-color: var(--ssc-surface-fg);
}

.ssm-checkout__input--error {
    border-color: var(--ssc-error);
}

.ssm-checkout__helper {
    font-size: 12px;
    color: var(--ssc-surface-fg-muted);
    margin-top: 6px;
    line-height: 1.4;
}

.ssm-checkout__field-error {
    font-size: 12px;
    color: var(--ssc-error);
    margin-top: 6px;
    line-height: 1.4;
    min-height: 0;
}

.ssm-checkout__field-error:empty {
    display: none;
}

/* ============================================================ */
/* LEVEL PICKER (fallback path when no ?level_id= given)        */
/* ============================================================ */

.ssm-checkout__level-picker {
    border: 0.5px solid var(--ssc-border);
    padding: 20px;
    margin-bottom: 24px;
    background: var(--ssc-surface);
}

.ssm-checkout__level-picker-heading {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--ssc-surface-fg-muted);
    margin: 0 0 12px;
}

.ssm-checkout__interval-row {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.ssm-checkout__interval-btn {
    flex: 1;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    background: var(--ssc-surface);
    color: var(--ssc-surface-fg);
    border: 0.5px solid var(--ssc-border);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--ssc-radius-sm);
    transition: all 0.15s ease;
}

.ssm-checkout__interval-btn:hover {
    border-color: var(--ssc-surface-fg);
}

.ssm-checkout__interval-btn.is-active {
    background: var(--ssc-surface-fg);
    color: var(--ssc-surface);
    border-color: var(--ssc-surface-fg);
}

/* ============================================================ */
/* DISCOUNT ROW                                                 */
/* ============================================================ */

.ssm-checkout__discount {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 0;
    border-top: 0.5px solid var(--ssc-border);
    border-bottom: 0.5px solid var(--ssc-border);
    margin: 24px 0;
}

.ssm-checkout__discount-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--ssc-surface-fg);
    text-transform: none;
    letter-spacing: 0.2px;
    flex-shrink: 0;
}

.ssm-checkout__discount-input {
    flex: 1;
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--ssc-surface-fg);
    background: var(--ssc-surface);
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
    line-height: 1.4;
}

.ssm-checkout__discount-input:focus {
    outline: none;
    border-color: var(--ssc-surface-fg);
}

.ssm-checkout__discount-apply {
    background: transparent;
    border: 0;
    color: var(--ssc-hero-accent);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    padding: 4px 8px;
    flex-shrink: 0;
    font-family: inherit;
}

.ssm-checkout__discount-apply:hover {
    text-decoration: underline;
}

.ssm-checkout__discount-message {
    font-size: 12px;
    color: var(--ssc-surface-fg-muted);
    margin-top: 8px;
    width: 100%;
    flex-basis: 100%;
    min-height: 0;
}

.ssm-checkout__discount-message:empty {
    display: none;
}

.ssm-checkout__discount-message--success {
    color: var(--ssc-success);
}

.ssm-checkout__discount-message--error {
    color: var(--ssc-error);
}

/* ============================================================ */
/* TERMS                                                        */
/* ============================================================ */

.ssm-checkout__terms {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--ssc-surface-fg);
}

.ssm-checkout__terms-checkbox {
    margin-top: 3px;
    flex-shrink: 0;
}

.ssm-checkout__terms-label {
    line-height: 1.5;
}

.ssm-checkout__terms-label a {
    color: var(--ssc-hero-accent);
    text-decoration: underline;
}

/* ============================================================ */
/* CTA                                                          */
/* ============================================================ */

.ssm-checkout__cta {
    display: block;
    width: 100%;
    background: var(--ssc-cta-bg);
    color: var(--ssc-cta-fg);
    border: 0;
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
    text-align: center;
    cursor: pointer;
    border-radius: var(--ssc-radius-sm);
    font-family: var(--shell-bf, inherit);
    transition: background-color 0.15s ease, color 0.15s ease;
}

.ssm-checkout__cta:hover,
.ssm-checkout__cta:focus {
    background: var(--ssc-cta-hover-bg);
    color: var(--ssc-cta-hover-fg);
    outline: none;
}

.ssm-checkout__cta:disabled,
.ssm-checkout__cta.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================ */
/* LOGIN LINK                                                   */
/* ============================================================ */

.ssm-checkout__login-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--ssc-surface-fg-muted);
}

.ssm-checkout__login-link a {
    color: var(--ssc-hero-accent);
    text-decoration: underline;
    font-weight: 600;
}

/* ============================================================ */
/* ALERTS                                                       */
/* ============================================================ */

.ssm-checkout__alerts {
    margin-bottom: 16px;
}

.ssm-checkout__alert {
    padding: 12px 16px;
    margin-bottom: 12px;
    font-size: 14px;
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
}

.ssm-checkout__alert--success {
    border-color: var(--ssc-success);
    color: var(--ssc-success);
    background: rgba(111, 184, 158, 0.08);
}

.ssm-checkout__alert--error {
    border-color: var(--ssc-error);
    color: var(--ssc-error);
    background: rgba(199, 120, 120, 0.08);
}

.ssm-checkout__alert--warning {
    border-color: var(--ssc-hero-accent);
    color: var(--ssc-hero-accent);
    background: rgba(212, 116, 14, 0.06);
}

.ssm-checkout__alert a {
    color: inherit;
    text-decoration: underline;
    font-weight: 600;
}

.ssm-checkout__stripe-warning {
    padding: 12px 16px;
    margin: 16px 0;
    font-size: 13px;
    color: var(--ssc-surface-fg-muted);
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
    background: rgba(108, 108, 104, 0.04);
}

/* ============================================================ */
/* CONFIRMATION (post-purchase)                                 */
/* ============================================================ */

.ssm-checkout__confirmation {
    text-align: center;
    padding: 48px 24px;
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
    background: var(--ssc-surface);
}

.ssm-checkout__confirmation-title {
    font-family: var(--shell-hf, Georgia, serif);
    font-size: 28px;
    font-weight: 500;
    color: var(--ssc-surface-fg);
    margin: 0 0 12px;
    line-height: 1.2;
}

.ssm-checkout__confirmation-body {
    font-size: 16px;
    color: var(--ssc-surface-fg-muted);
    margin: 0 0 32px;
    line-height: 1.5;
}

.ssm-checkout__confirmation-links {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.ssm-checkout__confirmation-link {
    display: inline-block;
    padding: 14px 24px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    border: 0.5px solid var(--ssc-surface-fg);
    background: var(--ssc-surface-fg);
    color: var(--ssc-surface);
    border-radius: var(--ssc-radius-sm);
    transition: background-color 0.15s ease, color 0.15s ease;
}

.ssm-checkout__confirmation-link:hover,
.ssm-checkout__confirmation-link:focus {
    background: var(--ssc-surface);
    color: var(--ssc-surface-fg);
    outline: none;
}

.ssm-checkout__confirmation-link--secondary {
    background: transparent;
    color: var(--ssc-surface-fg);
}

.ssm-checkout__confirmation-link--secondary:hover,
.ssm-checkout__confirmation-link--secondary:focus {
    background: var(--ssc-surface-fg);
    color: var(--ssc-surface);
}

.ssm-checkout__support-note {
    margin-top: 24px;
    font-size: 13px;
    color: var(--ssc-surface-fg-muted);
}

.ssm-checkout__support-note a {
    color: var(--ssc-hero-accent);
    text-decoration: underline;
}

.ssm-checkout__missing-links-note {
    margin-top: 24px;
    font-size: 13px;
    color: var(--ssc-surface-fg-muted);
    font-style: italic;
}

/* ============================================================ */
/* HONEYPOT                                                     */
/* ============================================================ */

.ssm-checkout__honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ============================================================ */
/* TWO-PANEL SIGNUP (v0.40.0)                                   */
/* ============================================================ */

/* Widen the shell for the two-panel card; confirmation state keeps 720px. */
.ssm-checkout--signup {
    max-width: 940px;
}

/* ---- top hero (single checkout headline — matches membership checkout mock) ---- */
.ssm-checkout__head {
    margin: 6px auto 40px;
    max-width: 688px;
    text-align: center;
}

/* Centered eyebrow with a short leading rule, per the mock (.eyebrow.c + ::before).
   Color / weight / tracking come from the base .ssm-checkout__eyebrow rule. */
.ssm-checkout__head .ssm-checkout__eyebrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 0 0 14px;
}

.ssm-checkout__head .ssm-checkout__eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--ssc-hero-accent);
}

/* The big serif checkout headline — sized to the site's page/pricing H1 via
   --shell-h1-size so it matches g-hero / page headings. Serif via --shell-hf. */
.ssm-checkout__pagetitle {
    font-family: var(--shell-hf, Georgia, serif);
    /* Sized to fit "Get N Days Free! No charge today." on ONE line at desktop
       inside the ~688px head (theme --shell-h1-size ran 44px+ and wrapped to two
       lines). Clamp lets it shrink on tablet; ≤520px override drops it to 24px
       and it may wrap on narrow phones. */
    font-size: clamp(26px, 3.4vw, 40px);
    font-weight: 500;
    letter-spacing: 0;
    line-height: 1.12;
    color: var(--ssc-surface-fg);
    margin: 0;
}

.ssm-checkout__lead {
    color: var(--ssc-surface-fg-muted);
    margin: 12px auto 0;
    max-width: 600px;
    font-size: 15px;
    line-height: 1.55;
}

/* ---- card + panes ---- */
.ssm-checkout__card {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    background: var(--ssc-surface);
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius);
    overflow: hidden;
}

.ssm-checkout__pane {
    padding: 28px 30px 32px;
}

.ssm-checkout__pane--summary {
    /* Warm tan/cream surface, pinned explicitly so it reads clearly WARM next to
       the white form (the shell warm token #F5F5F0 read cold grey-cream). Judgment
       value — fine-tune on the walk. 30px top/bottom breathing room per spec. */
    background: #F3EDE1;
    border-right: 0.5px solid var(--ssc-border);
    padding-top: 30px;
    padding-bottom: 30px;
}

/* ---- summary content ---- */
.ssm-checkout__lab {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ssc-surface-fg-faint);
    margin: 0 0 14px;
}

.ssm-checkout__hairline {
    height: 1px;
    background: var(--ssc-hair);
    border: 0;
    margin: 22px 0;
}

.ssm-checkout__incl {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ssm-checkout__incl li {
    display: grid;
    grid-template-columns: 17px 1fr;
    gap: 10px;
    align-items: start;
    font-size: 13.5px;
    line-height: 1.5;
}

.ssm-checkout__incl-tick {
    width: 16px;
    height: 16px;
    margin-top: 1px;
    color: var(--ssc-hero-accent);
}

.ssm-checkout__incl-tick svg {
    width: 16px;
    height: 16px;
    display: block;
}

.ssm-checkout__incl b {
    font-weight: 650;
}

.ssm-checkout__incl-desc {
    color: var(--ssc-surface-fg-muted);
}

/* ---- plan options ---- */
.ssm-checkout__opts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 7px;
    margin: 0 0 15px;
}

.ssm-checkout__opt {
    appearance: none;
    cursor: pointer;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    background: var(--ssc-surface);
    color: var(--ssc-surface-fg-muted);
    border: 0.5px solid var(--ssc-border);
    border-radius: var(--ssc-radius-sm);
    padding: 11px 6px;
    text-align: center;
    transition: border-color 0.14s, background 0.14s, color 0.14s;
}

.ssm-checkout__opt:hover {
    border-color: var(--ssc-hero-accent);
    color: var(--ssc-surface-fg);
}

.ssm-checkout__opt.is-active,
.ssm-checkout__opt[aria-pressed="true"] {
    border-color: var(--ssc-hero-accent);
    background: var(--ssc-surface);
    color: var(--ssc-surface-fg);
    box-shadow: inset 0 -2px 0 var(--ssc-hero-accent);
}

.ssm-checkout__opt:focus-visible {
    outline: 2px solid var(--ssc-hero-accent);
    outline-offset: 2px;
}

/* Featured (Best Value) plan option — accent border + a small accent pill. Driven
   by the level's explicit is_featured flag. */
.ssm-checkout__opt.is-featured {
    position: relative;
    border-color: var(--ssc-hero-accent);
    box-shadow: inset 0 0 0 1px var(--ssc-hero-accent);
}

.ssm-checkout__opt-flag {
    display: block;
    margin-top: 3px;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ssc-hero-accent);
}

/* ---- price + trial line ---- */
.ssm-checkout__price {
    margin: 0;
    font-size: 14px;
    display: flex;
    align-items: baseline;
    gap: 7px;
}

.ssm-checkout__fig {
    font-family: var(--shell-hf, Georgia, serif);
    font-size: 36px;
    font-weight: 400;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0;
    line-height: 1;
    color: var(--ssc-primary);
}

.ssm-checkout__per {
    color: var(--ssc-surface-fg-muted);
}

/* Billing-cadence sub-line under the price (e.g. "Billed every 3 months" for a
   quarterly plan). Hidden when the selected plan carries no cadence note. */
.ssm-checkout__cadence {
    margin: 6px 0 0;
    font-size: 12.5px;
    line-height: 1.4;
    color: var(--ssc-surface-fg-muted);
}

.ssm-checkout__cadence.is-hidden {
    display: none;
}

/* Trial reassurance block — "Due today $0.00" (positive) + no-charge note.
   Plan-independent: $0.00 holds for any trial plan, and frontend.js hides the
   whole block (.is-hidden) for a no-trial selection, so no JS content sync is
   needed. */
.ssm-checkout__nocharge {
    margin: 14px 0 0;
    padding: 13px 15px;
    border: 0.5px solid color-mix(in srgb, var(--ssc-good) 30%, transparent);
    border-radius: var(--ssc-radius-sm);
    background: color-mix(in srgb, var(--ssc-good) 8%, transparent);
}

.ssm-checkout__nocharge.is-hidden {
    display: none;
}

.ssm-checkout__due {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ssc-surface-fg);
}

.ssm-checkout__due-amount {
    font-family: var(--shell-hf, Georgia, serif);
    font-size: 20px;
    font-weight: 500;
    color: var(--ssc-good);
    line-height: 1;
}

.ssm-checkout__due-note {
    margin: 6px 0 0;
    font-size: 12.5px;
    line-height: 1.45;
    color: var(--ssc-good);
}

/* "Then $X / period starting <date>. Cancel anytime." — the post-trial recurring
   line inside the trial reassurance block. */
.ssm-checkout__then {
    margin: 8px 0 0;
    padding-top: 8px;
    border-top: 0.5px solid color-mix(in srgb, var(--ssc-good) 22%, transparent);
    font-size: 12.5px;
    line-height: 1.45;
    color: var(--ssc-surface-fg);
}

.ssm-checkout__then.is-hidden {
    display: none;
}

/* ---- form pane ---- */
.ssm-checkout__formtitle {
    font-family: var(--shell-hf, Georgia, serif);
    font-size: 19px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--ssc-surface-fg);
    margin: 0 0 6px;
}

.ssm-checkout__sub {
    color: var(--ssc-surface-fg-muted);
    font-size: 13.5px;
    line-height: 1.5;
    margin: 0 0 18px;
}

.ssm-checkout__sub-login {
    color: var(--ssc-hero-accent);
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
}

.ssm-checkout__sub-login:hover {
    text-decoration: underline;
}

.ssm-checkout__pane--form .ssm-checkout__field-row {
    margin-bottom: 16px;
}

.ssm-checkout__assure {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-size: 12px;
    color: var(--ssc-surface-fg-faint);
    margin: 12px 0 0;
}

.ssm-checkout__discount.is-hidden {
    display: none;
}

/* ============================================================ */
/* RESPONSIVE — collapse at 720px                               */
/* ============================================================ */

@media (max-width: 720px) {
    .ssm-checkout {
        margin: 1rem auto;
        padding: 0 12px;
    }
    .ssm-checkout__hero {
        padding: 24px;
    }
    .ssm-checkout__title {
        font-size: 24px;
    }
    .ssm-checkout__total-amount {
        font-size: 28px;
    }
    .ssm-checkout__field-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .ssm-checkout__discount {
        flex-wrap: wrap;
    }
    .ssm-checkout__discount-label {
        flex-basis: 100%;
    }
    .ssm-checkout__interval-row {
        flex-direction: column;
    }
    .ssm-checkout__confirmation-links {
        flex-direction: column;
        align-items: stretch;
    }
}

/* Two-panel collapses to a single column below 800px. */
@media (max-width: 800px) {
    .ssm-checkout__card {
        grid-template-columns: 1fr;
    }
    .ssm-checkout__pane--summary {
        border-right: 0;
        border-bottom: 0.5px solid var(--ssc-border);
    }
}

@media (max-width: 520px) {
    .ssm-checkout__pane {
        padding: 24px 20px 26px;
    }
    .ssm-checkout__pagetitle {
        font-size: 24px;
    }
}