/**
 * INDUSTRIAL COMMERCE 2.0 — design system.
 * Neutral foundation (near-black / graphite / warm white) + one restrained accent.
 * Typography: Space Grotesk (display) · Manrope (UI) · IBM Plex Mono (data only).
 * Density-first, hairline borders, small radii. No glass, no blueprint, no pills.
 *
 * This file carries tokens + shared components used by BOTH the theme and the
 * engine-rendered surfaces (builder, guide, finder, compare, fitment, results).
 */

/* ============================================================= tokens. */
:root {
        /* neutrals — dark */
        --ic-bg: #0e0f11;
        --ic-bg-2: #14161a;
        --ic-panel: #1a1d21;
        --ic-panel-2: #21252b;
        --ic-line-dark: rgba(255, 255, 255, 0.09);
        --ic-line-dark-2: rgba(255, 255, 255, 0.16);

        /* neutrals — light */
        --ic-paper: #f6f5f2;
        --ic-paper-2: #edece8;
        --ic-card: #ffffff;
        --ic-media: #f0efeb;
        --ic-line: #e3e1da;
        --ic-line-2: #d4d2ca;

        /* ink */
        --ic-ink: #16181c;
        --ic-ink-2: #4f545c;
        --ic-ink-3: #83878f;
        --ic-ink-inv: #f2f1ee;
        --ic-ink-inv-2: #a7abb3;
        --ic-ink-inv-3: #71767f;

        /* accent — used sparingly */
        --ic-accent: #e04e0d;
        --ic-accent-2: #c34108;
        --ic-accent-tint: #fbeade;
        --ic-accent-ink: #b93a05;

        /* status */
        --ic-ok: #1d8f56;
        --ic-ok-bg: rgba(29, 143, 86, 0.1);
        --ic-warn: #b07714;
        --ic-warn-bg: rgba(176, 119, 20, 0.12);
        --ic-review: #6d7683;
        --ic-review-bg: rgba(109, 118, 131, 0.12);
        --ic-bad: #c9372c;

        /* type */
        --ic-font: "Manrope", "Segoe UI", -apple-system, "Helvetica Neue", Arial, sans-serif;
        --ic-font-display: "Space Grotesk", "Manrope", "Segoe UI", sans-serif;
        --ic-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

        /* geometry */
        --ic-r-s: 3px;
        --ic-r-m: 6px;
        --ic-r-l: 10px;
        --ic-shadow-1: 0 1px 2px rgba(16, 17, 20, 0.05), 0 2px 8px rgba(16, 17, 20, 0.05);
        --ic-shadow-2: 0 2px 4px rgba(16, 17, 20, 0.06), 0 12px 32px rgba(16, 17, 20, 0.1);
        --ic-shadow-3: 0 4px 12px rgba(16, 17, 20, 0.1), 0 24px 64px rgba(16, 17, 20, 0.16);
        --ic-ease: cubic-bezier(0.2, 0.7, 0.3, 1);
        --ic-container: 1280px;
}

/* ============================================================== base. */
*,
*::before,
*::after {
        box-sizing: border-box;
}

html {
        -webkit-text-size-adjust: 100%;
        scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
        html {
                scroll-behavior: auto;
        }
}

body.ic-body {
        margin: 0;
        background: var(--ic-paper);
        color: var(--ic-ink);
        font-family: var(--ic-font);
        font-size: 15px;
        line-height: 1.55;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
}

body.ic-body img {
        max-width: 100%;
}

::selection {
        background: rgba(224, 78, 13, 0.18);
}

:focus-visible {
        outline: 2px solid var(--ic-accent);
        outline-offset: 2px;
        border-radius: 2px;
}

.ic-container {
        max-width: var(--ic-container);
        margin: 0 auto;
        padding: 0 24px;
}

@media (max-width: 640px) {
        .ic-container {
                padding: 0 16px;
        }
}

.ic-mono {
        font-family: var(--ic-mono);
        font-feature-settings: "tnum";
}

/* numeric data always tabular, even outside .ic-mono */
.dd-num,
input[type="number"] {
        font-variant-numeric: tabular-nums;
}

/* ============================================================== type. */
h1, h2, h3, h4,
.ic-h1, .ic-h2, .ic-h3 {
        font-family: var(--ic-font-display);
        font-weight: 600;
        line-height: 1.08;
        letter-spacing: -0.02em;
        margin: 0;
        color: inherit;
}

p {
        margin: 0 0 1em;
}

.ic-kicker {
        font-family: var(--ic-mono);
        font-size: 11px;
        font-weight: 500;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--ic-ink-3);
        margin: 0 0 10px;
        display: flex;
        align-items: center;
        gap: 10px;
}

.ic-kicker::before {
        content: "";
        width: 18px;
        height: 2px;
        background: var(--ic-accent);
        flex: none;
}

/* =========================================================== buttons. */
.ic-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 42px;
        padding: 0 20px;
        border: 1px solid transparent;
        border-radius: var(--ic-r-s);
        font-family: var(--ic-font);
        font-size: 14px;
        font-weight: 700;
        letter-spacing: 0.01em;
        line-height: 1;
        cursor: pointer;
        text-decoration: none;
        white-space: nowrap;
        transition: background-color 0.16s var(--ic-ease), border-color 0.16s var(--ic-ease), color 0.16s var(--ic-ease), box-shadow 0.16s var(--ic-ease), transform 0.16s var(--ic-ease);
        user-select: none;
}

.ic-btn:active {
        transform: translateY(1px);
}

.ic-btn[disabled],
.ic-btn.is-disabled {
        opacity: 0.45;
        cursor: not-allowed;
        pointer-events: none;
}

.ic-btn--primary {
        background: var(--ic-accent);
        color: #fff;
}

.ic-btn--primary:hover {
        background: var(--ic-accent-2);
        box-shadow: 0 6px 18px rgba(224, 78, 13, 0.28);
}

.ic-btn--ghost {
        background: transparent;
        border-color: var(--ic-line-2);
        color: var(--ic-ink);
}

.ic-btn--ghost:hover {
        border-color: var(--ic-ink-3);
        background: #fff;
}

.ic-btn--ghost-dark {
        background: rgba(255, 255, 255, 0.04);
        border-color: var(--ic-line-dark-2);
        color: var(--ic-ink-inv);
}

.ic-btn--ghost-dark:hover {
        border-color: rgba(255, 255, 255, 0.34);
        background: rgba(255, 255, 255, 0.08);
}

.ic-btn--dark {
        background: var(--ic-ink);
        color: #fff;
}

.ic-btn--dark:hover {
        background: #000;
}

.ic-btn--small {
        height: 34px;
        padding: 0 14px;
        font-size: 13px;
}

.ic-btn--large {
        height: 50px;
        padding: 0 28px;
        font-size: 15px;
}

.ic-btn--block {
        width: 100%;
}

.ic-btn__arrow {
        display: inline-block;
        transition: transform 0.16s var(--ic-ease);
}

.ic-btn:hover .ic-btn__arrow {
        transform: translateX(3px);
}

/* text link */
.ic-link {
        color: var(--ic-accent-ink);
        font-weight: 600;
        text-decoration: none;
        border-bottom: 1px solid transparent;
}

.ic-link:hover {
        border-bottom-color: currentColor;
}

/* ============================================================ badges. */
.ic-badge {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        height: 24px;
        padding: 0 10px;
        border-radius: var(--ic-r-s);
        font-family: var(--ic-mono);
        font-size: 10.5px;
        font-weight: 500;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        margin: 0;
}

.ic-badge__dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: currentColor;
        flex: none;
}

.ic-badge--ok {
        color: var(--ic-ok);
        background: var(--ic-ok-bg);
}

.ic-badge--warn {
        color: var(--ic-warn);
        background: var(--ic-warn-bg);
}

.ic-badge--review {
        color: var(--ic-review);
        background: var(--ic-review-bg);
}

.ic-badge--on-dark.ic-badge--ok {
        color: #4ec98b;
        background: rgba(78, 201, 139, 0.12);
}

.ic-badge--on-dark.ic-badge--warn {
        color: #e0a83f;
        background: rgba(224, 168, 63, 0.12);
}

.ic-badge--on-dark.ic-badge--review {
        color: #9aa3ad;
        background: rgba(154, 163, 173, 0.12);
}

/* status tag on light media chips */
.ic-tag {
        display: inline-flex;
        align-items: center;
        height: 22px;
        padding: 0 8px;
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-s);
        background: #fff;
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: var(--ic-ink-2);
        white-space: nowrap;
}

/* ============================================================== forms. */
.ic-field {
        display: flex;
        flex-direction: column;
        gap: 6px;
        min-width: 0;
}

.ic-field label,
.ic-field .ic-field__label {
        font-size: 12.5px;
        font-weight: 700;
        letter-spacing: 0.02em;
        color: var(--ic-ink-2);
}

.ic-field input[type="text"],
.ic-field input[type="number"],
.ic-field input[type="search"],
.ic-field input[type="email"],
.ic-field select,
.ic-select,
textarea.ic-field {
        height: 44px;
        padding: 0 12px;
        border: 1px solid var(--ic-line-2);
        border-radius: var(--ic-r-s);
        background: #fff;
        color: var(--ic-ink);
        font-family: var(--ic-font);
        font-size: 14.5px;
        font-weight: 500;
        width: 100%;
        transition: border-color 0.15s var(--ic-ease), box-shadow 0.15s var(--ic-ease);
        appearance: none;
}

.ic-field select,
.ic-select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%234f545c' stroke-width='1.6'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        padding-right: 32px;
}

.ic-field input:focus,
.ic-field select:focus,
.ic-select:focus,
textarea.ic-field:focus {
        outline: none;
        border-color: var(--ic-accent);
        box-shadow: 0 0 0 3px rgba(224, 78, 13, 0.14);
}

.ic-field input::placeholder,
textarea.ic-field::placeholder {
        color: var(--ic-ink-3);
        font-weight: 400;
}

.ic-field__hint {
        font-size: 12.5px;
        color: var(--ic-ink-3);
        line-height: 1.5;
}

.ic-fields {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 14px 16px;
}

@media (max-width: 640px) {
        .ic-fields {
                grid-template-columns: 1fr;
        }
}

/* ============================================================== chips. */
.ic-chips {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
}

.ic-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 36px;
        padding: 0 14px;
        border: 1px solid var(--ic-line-2);
        border-radius: var(--ic-r-s);
        background: #fff;
        color: var(--ic-ink-2);
        font-family: var(--ic-font);
        font-size: 13.5px;
        font-weight: 600;
        cursor: pointer;
        transition: border-color 0.14s var(--ic-ease), background-color 0.14s var(--ic-ease), color 0.14s var(--ic-ease);
}

.ic-chip:hover {
        border-color: var(--ic-ink-3);
        color: var(--ic-ink);
}

.ic-chip[aria-pressed="true"],
.ic-chip.is-selected {
        border-color: var(--ic-ink);
        background: var(--ic-ink);
        color: #fff;
}

/* selection checkmark used by option cards */
.ic-option__check {
        position: absolute;
        top: 10px;
        right: 10px;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        border: 1.5px solid var(--ic-line-2);
        display: grid;
        place-items: center;
        font-size: 11px;
        color: transparent;
        background: #fff;
        transition: all 0.15s var(--ic-ease);
}

.ic-option.is-selected .ic-option__check {
        background: var(--ic-accent);
        border-color: var(--ic-accent);
        color: #fff;
}

/* reveal animation */
.ic-reveal {
        opacity: 0;
        transform: translateY(14px);
        transition: opacity 0.5s var(--ic-ease), transform 0.5s var(--ic-ease);
}

.ic-reveal.is-visible {
        opacity: 1;
        transform: none;
}

@media (prefers-reduced-motion: reduce) {
        .ic-reveal {
                opacity: 1;
                transform: none;
                transition: none;
        }
}

/* skip link */
.ic-skip-link {
        position: absolute;
        left: -9999px;
        top: 0;
        z-index: 1000;
        background: var(--ic-accent);
        color: #fff;
        padding: 10px 16px;
        border-radius: 0 0 var(--ic-r-s) 0;
        font-weight: 700;
}

.ic-skip-link:focus {
        left: 0;
}

/* ===================================================== app shells (dark). */
.ic-app-shell {
        background: var(--ic-bg);
        color: var(--ic-ink-inv);
        border-radius: var(--ic-r-l);
        overflow: hidden;
        box-shadow: var(--ic-shadow-3);
}

/* ============================================================ builder. */
.ic-builder {
        display: grid;
        grid-template-columns: 248px 1fr;
        min-height: 560px;
}

.ic-builder__aside {
        border-right: 1px solid var(--ic-line-dark);
        padding: 28px 0 28px 28px;
        background: var(--ic-bg-2);
}

.ic-builder__brand {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.16em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
        margin: 0 0 22px;
}

.ic-builder__steps {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
}

.ic-builder__steps li {
        position: relative;
        display: flex;
        gap: 14px;
        padding: 13px 18px 13px 0;
        color: var(--ic-ink-inv-3);
        font-size: 13.5px;
        font-weight: 600;
        align-items: baseline;
        border-left: 2px solid transparent;
        padding-left: 14px;
        margin-left: -16px;
        transition: color 0.2s var(--ic-ease);
}

.ic-builder__steps .num {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.1em;
        width: 22px;
        flex: none;
}

.ic-builder__steps li.is-active {
        color: var(--ic-ink-inv);
        border-left-color: var(--ic-accent);
}

.ic-builder__steps li.is-active .num {
        color: var(--ic-accent);
}

.ic-builder__steps li.is-done {
        color: var(--ic-ink-inv-2);
}

.ic-builder__steps li.is-done .num::after {
        content: " ✓";
        color: var(--ic-ok);
}

/* main stage */
.ic-builder__main {
        padding: 34px 38px 38px;
        min-width: 0;
}

.ic-builder__stage-kicker {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.16em;
        text-transform: uppercase;
        color: var(--ic-accent);
        margin: 0 0 8px;
        font-weight: 500;
}

.ic-builder__stage-title {
        font-size: clamp(22px, 2.4vw, 28px);
        margin: 0 0 6px;
        color: var(--ic-ink-inv);
}

.ic-builder__stage-sub {
        color: var(--ic-ink-inv-2);
        font-size: 14px;
        max-width: 52ch;
        margin: 0 0 26px;
}

/* large option cards */
.ic-options {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
}

@media (max-width: 980px) {
        .ic-options {
                grid-template-columns: repeat(2, 1fr);
        }
}

@media (max-width: 560px) {
        .ic-options {
                grid-template-columns: 1fr 1fr;
        }
}

.ic-option {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 3px;
        padding: 16px 16px 14px;
        min-height: 108px;
        background: var(--ic-panel);
        border: 1px solid var(--ic-line-dark);
        border-radius: var(--ic-r-m);
        cursor: pointer;
        text-align: left;
        color: var(--ic-ink-inv);
        font-family: var(--ic-font);
        transition: border-color 0.15s var(--ic-ease), background-color 0.15s var(--ic-ease), transform 0.15s var(--ic-ease);
}

.ic-option:hover {
        border-color: rgba(255, 255, 255, 0.3);
        background: var(--ic-panel-2);
}

.ic-option.is-selected {
        border-color: var(--ic-accent);
        background: var(--ic-panel-2);
        box-shadow: inset 0 0 0 1px var(--ic-accent);
}

.ic-option__media {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
        border-radius: var(--ic-r-s);
        margin-bottom: 10px;
        background: #26292f;
}

.ic-option__title {
        font-size: 14.5px;
        font-weight: 700;
        padding-right: 22px;
}

.ic-option__hint {
        font-size: 12px;
        color: var(--ic-ink-inv-3);
}

/* field rows on dark */
.ic-builder .ic-field label {
        color: var(--ic-ink-inv-2);
}

.ic-builder .ic-field input,
.ic-builder .ic-field select,
.ic-builder .ic-select {
        background: var(--ic-panel);
        border-color: var(--ic-line-dark-2);
        color: var(--ic-ink-inv);
}

.ic-builder .ic-field select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23a7abb3' stroke-width='1.6'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 10px 6px;
}

.ic-builder .ic-field input:focus,
.ic-builder .ic-field select:focus {
        border-color: var(--ic-accent);
        box-shadow: 0 0 0 3px rgba(224, 78, 13, 0.2);
}

.ic-builder .ic-field input::placeholder {
        color: var(--ic-ink-inv-3);
}

.ic-builder .ic-field__hint {
        color: var(--ic-ink-inv-3);
}

.ic-builder .ic-chip {
        background: var(--ic-panel);
        border-color: var(--ic-line-dark-2);
        color: var(--ic-ink-inv-2);
}

.ic-builder .ic-chip:hover {
        border-color: rgba(255, 255, 255, 0.34);
        color: var(--ic-ink-inv);
}

.ic-builder .ic-chip[aria-pressed="true"] {
        background: var(--ic-accent);
        border-color: var(--ic-accent);
        color: #fff;
}

/* weight input — big numeric */
.ic-load-grid {
        display: grid;
        grid-template-columns: 1.2fr 1fr 1fr;
        gap: 16px;
}

@media (max-width: 860px) {
        .ic-load-grid {
                grid-template-columns: 1fr;
        }
}

.ic-load-grid input[type="number"] {
        height: 56px;
        font-family: var(--ic-mono);
        font-size: 20px;
        font-weight: 600;
}

/* nav row */
.ic-builder__nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        margin-top: 30px;
        padding-top: 22px;
        border-top: 1px solid var(--ic-line-dark);
}

.ic-skip-note {
        font-size: 13px;
        color: var(--ic-ink-inv-3);
        margin-top: 14px;
        display: inline-flex;
        background: none;
        border: none;
        border-bottom: 1px dashed var(--ic-line-dark-2);
        padding: 0 0 2px;
        cursor: pointer;
        font-family: var(--ic-font);
        font-weight: 600;
        color: var(--ic-ink-inv-2);
}

.ic-skip-note:hover {
        color: var(--ic-ink-inv);
        border-bottom-color: var(--ic-ink-inv-3);
}

/* results */
.ic-results {
        margin-top: 4px;
}

.ic-results__summary {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 22px;
        align-items: center;
        padding: 14px 16px;
        background: var(--ic-panel);
        border: 1px solid var(--ic-line-dark);
        border-radius: var(--ic-r-m);
        margin: 0 0 20px;
}

.ic-results__summary-title {
        margin: 0;
        font-size: 14px;
        font-weight: 700;
        color: var(--ic-ink-inv);
        flex: 1 1 240px;
}

.ic-results__computed {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
        font-family: var(--ic-mono);
        font-size: 11px;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
}

.ic-results__computed b {
        color: var(--ic-ink-inv);
        font-weight: 600;
}

.ic-results__gaps {
        margin: 0 0 18px;
        padding: 12px 16px;
        list-style: none;
        background: rgba(176, 119, 20, 0.1);
        border: 1px solid rgba(176, 119, 20, 0.35);
        border-radius: var(--ic-r-m);
        font-size: 13px;
        color: #d9a94e;
        display: grid;
        gap: 6px;
}

/* hero recommendation */
.ic-rec {
        display: grid;
        grid-template-columns: 300px 1fr;
        border: 1px solid var(--ic-line-dark);
        border-radius: var(--ic-r-m);
        background: var(--ic-panel);
        overflow: hidden;
}

.ic-rec + .ic-rec {
        margin-top: 12px;
}

.ic-rec--best {
        border-color: rgba(224, 78, 13, 0.55);
        box-shadow: 0 0 0 1px rgba(224, 78, 13, 0.3), 0 16px 48px rgba(0, 0, 0, 0.4);
}

.ic-rec__flag {
        grid-column: 1 / -1;
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 8px 16px;
        background: var(--ic-accent);
        color: #fff;
        font-family: var(--ic-mono);
        font-size: 10.5px;
        font-weight: 600;
        letter-spacing: 0.12em;
        text-transform: uppercase;
}

.ic-rec__media {
        background: #fff;
        position: relative;
        min-height: 220px;
}

.ic-rec__media img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
}

.ic-rec__body {
        padding: 20px 22px;
        min-width: 0;
}

.ic-rec__techline {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
        margin: 0 0 6px;
}

.ic-rec__title {
        font-size: 20px;
        margin: 0 0 8px;
        color: var(--ic-ink-inv);
}

.ic-rec__title a {
        color: inherit;
        text-decoration: none;
}

.ic-rec__title a:hover {
        color: #fff;
        text-decoration: underline;
        text-decoration-color: var(--ic-accent);
        text-underline-offset: 4px;
}

.ic-rec__price {
        font-size: 17px;
        font-weight: 800;
        color: var(--ic-ink-inv);
        margin: 0 0 10px;
}

.ic-rec__price del {
        color: var(--ic-ink-inv-3);
        font-weight: 500;
        margin-right: 6px;
}

.ic-rec__price ins {
        text-decoration: none;
}

.ic-rec__config {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        margin: 0 0 12px;
}

.ic-rec__config span {
        font-family: var(--ic-mono);
        font-size: 11px;
        letter-spacing: 0.05em;
        padding: 4px 8px;
        border: 1px solid var(--ic-line-dark-2);
        border-radius: var(--ic-r-s);
        color: var(--ic-ink-inv-2);
        background: var(--ic-bg-2);
}

.ic-rec__actions {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        margin-top: 16px;
}

/* why list */
.ic-why {
        list-style: none;
        margin: 12px 0 0;
        padding: 0;
        display: grid;
        gap: 7px;
}

.ic-why__item {
        position: relative;
        padding-left: 22px;
        font-size: 13.5px;
        color: var(--ic-ink-inv-2);
        line-height: 1.45;
}

.ic-why__item::before {
        content: "✓";
        position: absolute;
        left: 0;
        top: 0;
        width: 15px;
        height: 15px;
        border-radius: 50%;
        font-size: 9px;
        display: grid;
        place-items: center;
        background: rgba(78, 201, 139, 0.16);
        color: #4ec98b;
        margin-top: 3px;
}

.ic-why__item--warn::before {
        content: "!";
        background: rgba(224, 168, 63, 0.16);
        color: #e0a83f;
        font-weight: 700;
}

.ic-why__item--fail::before {
        content: "–";
        background: rgba(201, 55, 44, 0.18);
        color: #e2675d;
        font-weight: 700;
}

.ic-why__item--info::before {
        content: "i";
        background: rgba(154, 163, 173, 0.16);
        color: #9aa3ad;
        font-style: italic;
        font-weight: 700;
}

/* on light cards, why items switch palette */
.ic-card-light .ic-why__item {
        color: var(--ic-ink-2);
}

.ic-card-light .ic-why__item::before {
        background: rgba(29, 143, 86, 0.12);
        color: var(--ic-ok);
}

.ic-card-light .ic-why__item--warn::before {
        background: var(--ic-warn-bg);
        color: var(--ic-warn);
}

/* alternatives list */
.ic-rec--alt {
        grid-template-columns: 168px 1fr;
}

.ic-rec--alt .ic-rec__body {
        padding: 16px 18px;
}

.ic-rec--alt .ic-rec__title {
        font-size: 16px;
}

/* result footer note */
.ic-results__note {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
        margin: 18px 0 0;
}

/* ============================================================ guide. */
.ic-guide {
        max-width: 860px;
        margin: 0 auto;
}

.ic-guide__panel {
        background: var(--ic-bg);
        color: var(--ic-ink-inv);
        border-radius: var(--ic-r-l);
        box-shadow: var(--ic-shadow-3);
        overflow: hidden;
}

.ic-guide__head {
        padding: 34px 38px 28px;
        border-bottom: 1px solid var(--ic-line-dark);
        background:
                radial-gradient(1200px 380px at 85% -60%, rgba(224, 78, 13, 0.16), transparent 60%),
                var(--ic-bg);
}

.ic-guide__input-row {
        display: flex;
        gap: 10px;
}

@media (max-width: 640px) {
        .ic-guide__input-row {
                flex-direction: column;
        }
}

.ic-guide__input {
        flex: 1;
        height: 54px;
        padding: 0 16px;
        border: 1px solid var(--ic-line-dark-2);
        border-radius: var(--ic-r-s);
        background: var(--ic-panel);
        color: var(--ic-ink-inv);
        font-family: var(--ic-font);
        font-size: 15.5px;
        font-weight: 500;
        transition: border-color 0.15s var(--ic-ease), box-shadow 0.15s var(--ic-ease);
}

.ic-guide__input:focus {
        outline: none;
        border-color: var(--ic-accent);
        box-shadow: 0 0 0 3px rgba(224, 78, 13, 0.2);
}

.ic-guide__input::placeholder {
        color: var(--ic-ink-inv-3);
}

.ic-guide__examples {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 16px;
        align-items: center;
}

.ic-guide__examples-label {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
        margin-right: 4px;
}

.ic-guide__example {
        height: 32px;
        padding: 0 12px;
        border: 1px solid var(--ic-line-dark);
        border-radius: var(--ic-r-s);
        background: transparent;
        color: var(--ic-ink-inv-2);
        font-family: var(--ic-font);
        font-size: 12.5px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.14s var(--ic-ease);
}

.ic-guide__example:hover {
        border-color: var(--ic-accent);
        color: var(--ic-ink-inv);
        background: rgba(224, 78, 13, 0.08);
}

/* parsed understanding */
.ic-understanding {
        padding: 26px 38px 30px;
        border-bottom: 1px solid var(--ic-line-dark);
}

.ic-understanding__label {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.16em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
        margin: 0 0 14px;
}

.ic-understanding__chips {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
}

.ic-slot {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 1px;
        padding: 7px 12px 6px;
        background: var(--ic-panel);
        border: 1px solid var(--ic-line-dark-2);
        border-radius: var(--ic-r-s);
        min-height: 44px;
}

.ic-slot b {
        font-family: var(--ic-mono);
        font-size: 9.5px;
        font-weight: 500;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--ic-ink-inv-3);
}

.ic-slot span {
        font-size: 14px;
        font-weight: 700;
        color: var(--ic-ink-inv);
        white-space: nowrap;
}

.ic-slot--missing {
        border-style: dashed;
        border-color: rgba(176, 119, 20, 0.55);
        background: rgba(176, 119, 20, 0.06);
}

.ic-slot--missing span {
        font-weight: 600;
        color: #d9a94e;
        font-size: 12.5px;
}

.ic-guide__message {
        margin: 16px 0 0;
        font-size: 14px;
        color: var(--ic-ink-inv-2);
}

.ic-guide__results {
        padding: 26px 38px 34px;
}

/* ============================================================ finder. */
.ic-finder__grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
}

@media (max-width: 980px) {
        .ic-finder__grid {
                grid-template-columns: repeat(2, 1fr);
        }
}

@media (max-width: 560px) {
        .ic-finder__grid {
                grid-template-columns: 1fr;
        }
}

/* ============================================================ compare. */
.ic-compare {
        overflow-x: auto;
        background: var(--ic-card);
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-l);
        box-shadow: var(--ic-shadow-1);
}

.ic-compare table {
        width: 100%;
        border-collapse: collapse;
        min-width: 720px;
}

.ic-compare th,
.ic-compare td {
        padding: 13px 18px;
        text-align: left;
        border-bottom: 1px solid var(--ic-line);
        font-size: 14px;
        vertical-align: middle;
}

.ic-compare thead th {
        padding: 22px 18px 18px;
        vertical-align: top;
        border-bottom: 2px solid var(--ic-ink);
}

.ic-compare tbody tr:last-child th,
.ic-compare tbody tr:last-child td {
        border-bottom: none;
}

.ic-compare tbody th {
        font-size: 11px;
        font-family: var(--ic-mono);
        font-weight: 500;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--ic-ink-3);
        width: 170px;
        white-space: nowrap;
        background: var(--ic-paper);
}

.ic-compare td {
        color: var(--ic-ink);
        font-weight: 600;
        font-variant-numeric: tabular-nums;
}

.ic-compare td.is-diff {
        background: var(--ic-accent-tint);
        box-shadow: inset 2px 0 0 var(--ic-accent);
}

.ic-compare__col {
        min-width: 190px;
}

.ic-compare__img {
        width: 100%;
        max-width: 200px;
        aspect-ratio: 4 / 3;
        object-fit: cover;
        border-radius: var(--ic-r-s);
        background: var(--ic-media);
        display: block;
        margin-bottom: 10px;
}

.ic-compare__name {
        display: block;
        font-size: 15px;
        font-weight: 800;
        color: var(--ic-ink);
        text-decoration: none;
        line-height: 1.3;
        margin-bottom: 6px;
        font-family: var(--ic-font);
}

.ic-compare__name:hover {
        color: var(--ic-accent-ink);
        text-decoration: underline;
        text-underline-offset: 3px;
}

.ic-compare__remove {
        border: none;
        background: none;
        padding: 0;
        font-family: var(--ic-font);
        font-size: 12px;
        font-weight: 600;
        color: var(--ic-ink-3);
        cursor: pointer;
        border-bottom: 1px dashed var(--ic-line-2);
}

.ic-compare__remove:hover {
        color: var(--ic-bad);
        border-bottom-color: currentColor;
}

.ic-compare__note {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--ic-ink-3);
        margin-top: 14px;
}

.ic-compare-empty {
        background: var(--ic-card);
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-l);
        padding: 56px 32px;
        text-align: center;
        display: grid;
        place-items: center;
        gap: 10px;
}

.ic-compare-empty h2 {
        font-size: 24px;
}

.ic-compare-empty p {
        color: var(--ic-ink-2);
        margin: 0;
        max-width: 46ch;
}

/* ======================================================= configurator. */
.ic-configurator {
        display: grid;
        gap: 16px;
}

.ic-configurator__group {
        display: grid;
        gap: 8px;
}

.ic-configurator__group-label {
        font-family: var(--ic-mono);
        font-size: 10.5px;
        font-weight: 500;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--ic-ink-3);
}

.ic-configurator__options {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
}

.ic-configurator__opt {
        height: 40px;
        min-width: 52px;
        padding: 0 14px;
        border: 1px solid var(--ic-line-2);
        border-radius: var(--ic-r-s);
        background: #fff;
        font-family: var(--ic-font);
        font-size: 14px;
        font-weight: 700;
        color: var(--ic-ink);
        cursor: pointer;
        transition: all 0.14s var(--ic-ease);
}

.ic-configurator__opt:hover {
        border-color: var(--ic-ink-3);
}

.ic-configurator__opt[aria-pressed="true"] {
        background: var(--ic-ink);
        border-color: var(--ic-ink);
        color: #fff;
}

.ic-configurator__opt.is-disabled {
        opacity: 0.32;
        cursor: not-allowed;
        text-decoration: line-through;
        text-decoration-color: var(--ic-ink-3);
}

.ic-configurator__readout {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1px;
        background: var(--ic-line);
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-m);
        margin: 6px 0 0;
        overflow: hidden;
}

.ic-configurator__readout > div {
        background: var(--ic-paper);
        padding: 10px 14px;
}

.ic-configurator__readout dt {
        font-family: var(--ic-mono);
        font-size: 9.5px;
        font-weight: 500;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--ic-ink-3);
        margin: 0 0 3px;
}

.ic-configurator__readout dd {
        margin: 0;
        font-size: 16px;
        font-weight: 800;
        font-variant-numeric: tabular-nums;
        color: var(--ic-ink);
}

.ic-configurator__readout dd.is-stock-ok {
        color: var(--ic-ok);
        font-size: 13px;
}

.ic-configurator__readout dd.is-stock-bad {
        color: var(--ic-bad);
        font-size: 13px;
}

/* ============================================================ fitment. */
.ic-fitment {
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-m);
        background: var(--ic-card);
        overflow: hidden;
}

.ic-fitment__summary {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 16px 18px;
        background: none;
        border: none;
        cursor: pointer;
        text-align: left;
        font-family: var(--ic-font);
}

.ic-fitment__summary-title {
        font-size: 15px;
        font-weight: 800;
        color: var(--ic-ink);
        display: flex;
        align-items: center;
        gap: 10px;
}

.ic-fitment__summary-title svg {
        color: var(--ic-accent);
        flex: none;
}

.ic-fitment__summary-hint {
        font-size: 12.5px;
        color: var(--ic-ink-3);
}

.ic-fitment__summary-chevron {
        transition: transform 0.2s var(--ic-ease);
        color: var(--ic-ink-3);
        flex: none;
}

.ic-fitment.is-open .ic-fitment__summary-chevron {
        transform: rotate(180deg);
}

.ic-fitment__body {
        padding: 4px 18px 18px;
        border-top: 1px solid var(--ic-line);
        display: none;
}

.ic-fitment.is-open .ic-fitment__body {
        display: block;
}

.ic-fitment__form {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        margin-top: 12px;
}

.ic-fitment__form .ic-field:nth-child(4) {
        grid-column: span 1;
}

.ic-fitment__form button[type="submit"] {
        grid-column: 1 / -1;
        justify-self: start;
}

@media (max-width: 860px) {
        .ic-fitment__form {
                grid-template-columns: 1fr 1fr;
        }
}

@media (max-width: 560px) {
        .ic-fitment__form {
                grid-template-columns: 1fr;
        }
}

.ic-fitment__result {
        margin-top: 16px;
        padding: 16px;
        background: var(--ic-paper);
        border: 1px solid var(--ic-line);
        border-radius: var(--ic-r-m);
}

.ic-fitment__result .ic-why__item {
        color: var(--ic-ink-2);
}

.ic-fitment__result .ic-why__item::before {
        background: rgba(29, 143, 86, 0.12);
        color: var(--ic-ok);
}

/* light-context results (product cards on light bg) */
.ic-results--light .ic-results__summary {
        background: var(--ic-card);
        border-color: var(--ic-line);
}

.ic-results--light .ic-results__computed {
        color: var(--ic-ink-3);
}

.ic-results--light .ic-results__computed b {
        color: var(--ic-ink);
}

.ic-results--light .ic-rec {
        background: var(--ic-card);
        border-color: var(--ic-line);
}

.ic-results--light .ic-rec--best {
        border-color: var(--ic-accent);
        box-shadow: 0 0 0 1px rgba(224, 78, 13, 0.25), var(--ic-shadow-2);
}

.ic-results--light .ic-rec__techline {
        color: var(--ic-ink-3);
}

.ic-results--light .ic-rec__title,
.ic-results--light .ic-rec__price {
        color: var(--ic-ink);
}

.ic-results--light .ic-rec__title a:hover {
        color: var(--ic-accent-ink);
}

.ic-results--light .ic-rec__config span {
        background: var(--ic-paper);
        border-color: var(--ic-line);
        color: var(--ic-ink-2);
}

.ic-results--light .ic-why__item {
        color: var(--ic-ink-2);
}

.ic-results--light .ic-why__item::before {
        background: rgba(29, 143, 86, 0.12);
        color: var(--ic-ok);
}

.ic-results--light .ic-results__note {
        color: var(--ic-ink-3);
}

/* ============================================================ skeleton. */
.ic-skeleton {
        display: grid;
        gap: 14px;
        padding: 28px;
}

.ic-skeleton__bar {
        height: 14px;
        border-radius: var(--ic-r-s);
        background: linear-gradient(90deg, var(--ic-panel) 25%, var(--ic-panel-2) 50%, var(--ic-panel) 75%);
        background-size: 200% 100%;
        animation: ic-shimmer 1.4s infinite;
}

.ic-skeleton__card {
        height: 320px;
        border-radius: var(--ic-r-m);
        background: linear-gradient(90deg, var(--ic-panel) 25%, var(--ic-panel-2) 50%, var(--ic-panel) 75%);
        background-size: 200% 100%;
        animation: ic-shimmer 1.4s infinite;
}

@keyframes ic-shimmer {
        0% {
                background-position: 200% 0;
        }
        100% {
                background-position: -200% 0;
        }
}

/* ==================================================== responsive apps. */
@media (max-width: 880px) {
        .ic-builder {
                grid-template-columns: 1fr;
        }

        .ic-builder__aside {
                border-right: none;
                border-bottom: 1px solid var(--ic-line-dark);
                padding: 18px 22px;
        }

        .ic-builder__steps {
                flex-direction: row;
                gap: 4px;
                overflow-x: auto;
                scrollbar-width: none;
        }

        .ic-builder__steps li {
                flex: none;
                border-left: none;
                border-bottom: 2px solid transparent;
                padding: 8px 10px;
                margin-left: 0;
                gap: 7px;
                font-size: 12.5px;
        }

        .ic-builder__steps li.is-active {
                border-bottom-color: var(--ic-accent);
        }

        .ic-builder__main {
                padding: 24px 20px 28px;
        }

        .ic-rec {
                grid-template-columns: 1fr;
        }

        .ic-rec__media {
                min-height: 200px;
        }

        .ic-rec--alt {
                grid-template-columns: 1fr;
        }

        .ic-rec--alt .ic-rec__media {
                min-height: 150px;
        }

        .ic-guide__head,
        .ic-understanding,
        .ic-guide__results {
                padding-left: 20px;
                padding-right: 20px;
        }
}