/* ============================================================
   shoe-insoles · 鞋垫与鞋型选购
   运动鞋底风（sin-）：跑橙 + 鞋青 + 楦白，鞋底纹/足印/鞋带装饰
   与冰晶霜室 / 快递面单 / 防护盾牌等主题零重叠
   ============================================================ */
.sin-page {
    --sin-orange: #e8642a;
    --sin-orange-deep: #c24e18;
    --sin-orange-soft: rgba(232, 100, 42, 0.12);
    --sin-teal: #2a9d8f;
    --sin-teal-deep: #1d7167;
    --sin-teal-soft: rgba(42, 157, 143, 0.12);
    --sin-mist: #faf6f1;
    --sin-card: #fffdfa;
    --sin-card-2: #f6efe8;
    --sin-line: #e4d7cb;
    --sin-line-strong: #c9b4a3;
    --sin-text: #2b2118;
    --sin-muted: #7a6a5c;
    --sin-shadow: 0 6px 20px rgba(194, 78, 24, 0.12);

    color: var(--sin-text);
    font-size: 15px;
    line-height: 1.8;
}

[data-theme="dark"] .sin-page {
    --sin-orange: #f0854e;
    --sin-orange-deep: #f5a678;
    --sin-orange-soft: rgba(240, 133, 78, 0.14);
    --sin-teal: #4fb8aa;
    --sin-teal-deep: #7dd0c5;
    --sin-teal-soft: rgba(79, 184, 170, 0.14);
    --sin-mist: #201913;
    --sin-card: #281f18;
    --sin-card-2: #322721;
    --sin-line: #463a2f;
    --sin-line-strong: #63523f;
    --sin-text: #f0e7dc;
    --sin-muted: #a99786;
    --sin-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}

.sin-page h1, .sin-page h2, .sin-page h3 { line-height: 1.4; }
.sin-page b, .sin-page strong { color: var(--sin-orange-deep); }

/* ---------- 首屏：鞋底 ---------- */
.sin-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(180px, 0.65fr) minmax(240px, 0.85fr);
    gap: 22px 26px;
    align-items: center;
    padding: 30px 32px 26px;
    margin-bottom: 24px;
    border-radius: 18px;
    border: 1px solid var(--sin-line-strong);
    background:
        radial-gradient(circle at 94% 6%, var(--sin-teal-soft) 0, transparent 32%),
        linear-gradient(180deg, var(--sin-mist) 0%, var(--sin-card) 100%);
    box-shadow: var(--sin-shadow);
    overflow: hidden;
}
/* 左缘鞋带孔纹 */
.sin-hero::before {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: 0;
    width: 10px;
    background: radial-gradient(circle at 5px 12px, var(--sin-orange) 3px, transparent 3.5px);
    background-size: 10px 26px;
    opacity: 0.35;
}
.sin-kicker {
    display: inline-block;
    padding: 5px 14px;
    margin-bottom: 12px;
    border-radius: 999px 999px 999px 4px;
    background: var(--sin-orange);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.18em;
}
.sin-hero h1 { margin: 0 0 10px; font-size: clamp(25px, 3.2vw, 36px); font-weight: 900; }
.sin-hero-sub { margin: 0 0 14px; max-width: 56ch; color: var(--sin-muted); font-size: 15px; }
.sin-hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.sin-hero-chips li {
    padding: 5px 13px;
    border-radius: 999px;
    border: 1px solid var(--sin-line-strong);
    background: var(--sin-card);
    color: var(--sin-muted);
    font-size: 12px;
    font-weight: 700;
}

/* hero 鞋底 */
.sin-hero-sole {
    display: grid;
    justify-items: center;
    gap: 10px;
}
.sin-sole {
    position: relative;
    width: 96px; height: 168px;
    border-radius: 48px 48px 40px 40px / 52px 52px 36px 36px;
    background: linear-gradient(170deg, var(--sin-orange) 0%, var(--sin-orange-deep) 100%);
    box-shadow: 0 10px 22px rgba(194, 78, 24, 0.3);
    overflow: hidden;
}
.sin-sole-tread {
    position: absolute;
    left: 14px; right: 14px;
    height: 10px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.28);
}
.sin-sole-tread:nth-child(1) { top: 12px; }
.sin-sole-tread:nth-child(2) { top: 30px; }
.sin-sole-tread:nth-child(3) { top: 48px; }
.sin-sole-arch {
    position: absolute;
    left: 50%; top: 84px;
    transform: translateX(-50%);
    width: 46px; height: 62px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.22);
}
.sin-sole-arch::before {
    content: "";
    position: absolute;
    left: 10px; top: 8px;
    width: 20px; height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.3);
}
.sin-sole-caption {
    padding: 5px 14px;
    border-radius: 999px;
    border: 1px dashed var(--sin-orange);
    background: var(--sin-card);
    color: var(--sin-orange-deep);
    font-size: 12px;
    font-weight: 800;
}

/* hero 读数 */
.sin-hero-readout, .sin-result-hero {
    padding: 18px 20px;
    border-radius: 14px;
    border: 1px solid var(--sin-line-strong);
    background: var(--sin-card);
    display: grid;
    gap: 4px;
    justify-items: start;
    box-shadow: var(--sin-shadow);
}
.sin-hero-readout { position: relative; z-index: 1; }
.sin-readout-label, .sin-rh-label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--sin-muted);
}
.sin-readout-num, .sin-rh-num {
    font-size: 27px;
    font-weight: 900;
    color: var(--sin-orange-deep);
    font-variant-numeric: tabular-nums;
    line-height: 1.3;
}
.sin-readout-state { font-size: 13px; font-weight: 700; color: var(--sin-teal-deep); }
.sin-readout-meta { font-size: 12px; color: var(--sin-muted); }
.sin-readout-tip { margin-top: 6px; font-size: 12px; color: var(--sin-muted); opacity: 0.85; }

/* ---------- 主体两栏 ---------- */
.sin-calc {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr);
    gap: 20px;
    align-items: start;
    margin-bottom: 28px;
}
.sin-input-col { display: grid; gap: 16px; min-width: 0; }

.sin-panel {
    padding: 20px 22px;
    border: 1px solid var(--sin-line);
    border-radius: 14px;
    background: var(--sin-card);
    box-shadow: var(--sin-shadow);
}
.sin-panel-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.sin-panel-head h2 { margin: 0; font-size: 18px; font-weight: 800; }
.sin-panel-head p { margin: 2px 0 0; font-size: 13px; color: var(--sin-muted); }
.sin-panel-head p b { color: var(--sin-text); }
.sin-step {
    flex-shrink: 0;
    width: 38px; height: 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--sin-orange);
    color: #fff;
    font-size: 15px;
    font-weight: 900;
}
.sin-step--teal { background: var(--sin-teal); }

.sin-grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sin-field { display: grid; gap: 6px; }
.sin-label { font-size: 13px; font-weight: 700; color: var(--sin-text); }
.sin-input-wrap, .sin-select-wrap { position: relative; display: flex; align-items: center; }
.sin-select-wrap::after {
    content: "▾";
    position: absolute;
    right: 12px;
    color: var(--sin-muted);
    font-size: 13px;
    pointer-events: none;
}
.sin-input {
    width: 100%;
    height: 44px;
    padding: 0 12px;
    border: 1.5px solid var(--sin-line-strong);
    border-radius: 10px;
    background: var(--sin-card-2);
    color: var(--sin-text);
    font-size: 15px;
    font-weight: 700;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    appearance: none;
    -webkit-appearance: none;
}
.sin-select-wrap .sin-input { padding-right: 30px; }
.sin-input--sm { height: 38px; font-size: 13.5px; }
.sin-input:focus { border-color: var(--sin-orange); box-shadow: 0 0 0 3px var(--sin-orange-soft); }

.sin-error {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(194, 78, 24, 0.4);
    background: var(--sin-orange-soft);
    color: var(--sin-orange-deep);
    font-size: 13px;
}
.sin-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.sin-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 44px;
    padding: 0 20px;
    border: 1.5px solid var(--sin-line-strong);
    border-radius: 10px;
    background: var(--sin-card-2);
    color: var(--sin-text);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.12s;
}
.sin-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(194, 78, 24, 0.16); }
.sin-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.sin-btn--primary {
    border-color: var(--sin-orange-deep);
    background: linear-gradient(170deg, var(--sin-orange) 0%, var(--sin-orange-deep) 100%);
    color: #fff;
}

/* ---------- 足型三卡 ---------- */
.sin-panel--foot { border-left: 4px solid var(--sin-teal); }
.sin-foot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sin-foot {
    display: grid;
    gap: 4px;
    justify-items: center;
    padding: 14px 10px 12px;
    border: 1.5px solid var(--sin-line-strong);
    border-radius: 12px;
    background: var(--sin-card-2);
    cursor: pointer;
    transition: all 0.14s;
    text-align: center;
    font-family: inherit;
}
.sin-foot:hover { border-color: var(--sin-teal); }
.sin-foot.is-active {
    border-color: var(--sin-teal);
    background: var(--sin-teal-soft);
    box-shadow: inset 0 0 0 1px var(--sin-teal);
}
.sin-foot b { font-size: 14px; color: var(--sin-text); }
.sin-foot small { font-size: 11.5px; color: var(--sin-muted); line-height: 1.5; }
.sin-foot.is-active b { color: var(--sin-teal-deep); }
/* 足印装饰 */
.sin-foot-print {
    position: relative;
    width: 44px; height: 64px;
    border-radius: 22px 22px 16px 16px;
    background: var(--sin-line-strong);
    opacity: 0.55;
}
.sin-foot-print--normal {
    -webkit-mask: linear-gradient(180deg, #000 0 34%, transparent 34% 58%, #000 58% 100%);
    mask: linear-gradient(180deg, #000 0 34%, transparent 34% 58%, #000 58% 100%);
    background: var(--sin-teal);
    opacity: 0.8;
}
.sin-foot-print--high {
    -webkit-mask: linear-gradient(180deg, #000 0 30%, transparent 30% 70%, #000 70% 100%);
    mask: linear-gradient(180deg, #000 0 30%, transparent 30% 70%, #000 70% 100%);
    background: var(--sin-teal);
    opacity: 0.8;
}

/* ---------- 场景三卡 + 推荐 ---------- */
.sin-panel--scene { border-left: 4px solid var(--sin-orange); }
.sin-scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sin-scene {
    display: grid;
    gap: 2px;
    justify-items: center;
    padding: 13px 8px 11px;
    border: 1.5px solid var(--sin-line-strong);
    border-radius: 12px;
    background: var(--sin-card-2);
    cursor: pointer;
    transition: all 0.14s;
    text-align: center;
    font-family: inherit;
}
.sin-scene:hover { border-color: var(--sin-orange); }
.sin-scene.is-active {
    border-color: var(--sin-orange);
    background: var(--sin-orange-soft);
    box-shadow: inset 0 0 0 1px var(--sin-orange);
}
.sin-scene b { font-size: 14px; color: var(--sin-text); }
.sin-scene small { font-size: 11.5px; color: var(--sin-muted); }
.sin-scene.is-active b { color: var(--sin-orange-deep); }

.sin-reco {
    margin-top: 12px;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px dashed var(--sin-line-strong);
    background: var(--sin-card-2);
    font-size: 13.5px;
    color: var(--sin-muted);
}
.sin-reco b { color: var(--sin-orange-deep); }
.sin-reco .sin-reco-teal { color: var(--sin-teal-deep); }

/* ---------- 结果列 ---------- */
.sin-result-col { display: grid; gap: 14px; position: sticky; top: 16px; }
.sin-rh-sub { font-size: 13px; font-weight: 700; color: var(--sin-teal-deep); }

.sin-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.sin-kpi {
    padding: 12px 14px;
    border: 1px solid var(--sin-line);
    border-radius: 12px;
    background: var(--sin-card);
    display: grid;
    gap: 2px;
}
.sin-kpi span { font-size: 12px; color: var(--sin-muted); font-weight: 700; }
.sin-kpi b { font-size: 21px; font-weight: 900; color: var(--sin-text); line-height: 1.2; font-variant-numeric: tabular-nums; }
.sin-kpi small { font-size: 11px; color: var(--sin-muted); }

.sin-mini-card {
    padding: 16px 18px;
    border: 1px solid var(--sin-line);
    border-radius: 12px;
    background: var(--sin-card);
}
.sin-mini-card h3 { margin: 0 0 10px; font-size: 15px; font-weight: 800; color: var(--sin-orange-deep); }
.sin-fit { display: grid; gap: 10px; }
.sin-fit-field { display: grid; gap: 5px; font-size: 12.5px; font-weight: 700; color: var(--sin-muted); }
.sin-fit-out { font-size: 13.5px; color: var(--sin-muted); min-height: 22px; }
.sin-fit-out b { color: var(--sin-teal-deep); }
.sin-fit-out .sin-fit-warn { color: var(--sin-orange-deep); }
.sin-result-foot { margin: 0; font-size: 12px; color: var(--sin-muted); }

/* ---------- 对照表 ---------- */
.sin-table-wrap-sec { margin-bottom: 28px; }
.sin-section-head { margin: 0 0 14px; }
.sin-section-kicker {
    display: inline-block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.2em;
    color: var(--sin-orange-deep);
    opacity: 0.85;
}
.sin-section-head h2 { margin: 4px 0 2px; font-size: 22px; font-weight: 900; }
.sin-section-head p { margin: 0; font-size: 13px; color: var(--sin-muted); }
.sin-table-wrap {
    border: 1px solid var(--sin-line-strong);
    border-radius: 12px;
    overflow-x: auto;
    background: var(--sin-card);
    box-shadow: var(--sin-shadow);
}
.sin-chart { width: 100%; border-collapse: collapse; min-width: 560px; }
.sin-chart th, .sin-chart td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--sin-line);
    font-size: 13.5px;
    text-align: left;
    white-space: nowrap;
}
.sin-chart thead th {
    background: linear-gradient(170deg, var(--sin-orange) 0%, var(--sin-orange-deep) 100%);
    color: #fff;
    font-size: 12.5px;
    font-weight: 800;
    letter-spacing: 0.05em;
}
.sin-chart tbody tr:nth-child(even) { background: var(--sin-card-2); }
.sin-chart tbody tr:last-child td { border-bottom: none; }
.sin-chart td { color: var(--sin-muted); font-variant-numeric: tabular-nums; }
.sin-chart tr.is-here td { background: var(--sin-teal-soft); color: var(--sin-text); font-weight: 700; }

/* ---------- 避坑 ---------- */
.sin-tips { margin-bottom: 28px; }
.sin-tip-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.sin-tip-card {
    position: relative;
    padding: 18px 18px 16px;
    border: 1px solid var(--sin-line);
    border-radius: 12px;
    background: var(--sin-card);
    overflow: hidden;
    box-shadow: var(--sin-shadow);
}
.sin-tip-card::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    background: repeating-linear-gradient(90deg, var(--sin-teal) 0 16px, transparent 16px 24px);
    opacity: 0.5;
}
.sin-tip-card h3 { margin: 0 0 6px; font-size: 15px; font-weight: 800; }
.sin-tip-card p { margin: 0; font-size: 13px; color: var(--sin-muted); }

/* ---------- FAQ ---------- */
.sin-faq { margin-bottom: 28px; }
.sin-faq .faq-item { border-color: var(--sin-line); background: var(--sin-card); }
.sin-faq .faq-item summary { color: var(--sin-text); }
.sin-faq .faq-a { color: var(--sin-muted); }
.sin-comments { margin-bottom: 28px; }

/* ---------- 返回顶部 ---------- */
.sin-top {
    position: fixed;
    right: 22px;
    bottom: 26px;
    width: 44px; height: 44px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(170deg, var(--sin-orange) 0%, var(--sin-orange-deep) 100%);
    color: #fff;
    font-size: 18px;
    font-weight: 900;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s, transform 0.2s;
    box-shadow: 0 6px 16px rgba(194, 78, 24, 0.3);
    z-index: 60;
}
.sin-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .sin-hero { grid-template-columns: 1fr 1fr; }
    .sin-hero-readout { grid-column: 1 / -1; }
    .sin-calc { grid-template-columns: 1fr; }
    .sin-result-col { position: static; }
    .sin-tip-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .sin-hero { grid-template-columns: 1fr; padding: 22px 18px; }
    .sin-grid3 { grid-template-columns: 1fr; }
    .sin-foot-grid { grid-template-columns: 1fr; }
    .sin-scene-grid { grid-template-columns: 1fr; }
    .sin-tip-grid { grid-template-columns: 1fr; }
    .sin-actions .sin-btn { flex: 1 1 46%; }
}