/* ============================================================
   css/source.css — 技术授权页专属样式（前缀 sr-）
   主色 var(--orange-600)；代码窗口用深色面板，授权卡为白卡。
   断点：960px / 640px
   ============================================================ */

/* ---------- Hero ---------- */
.sr-hero {
    background:
        radial-gradient(circle at 80% 0%, rgba(249, 115, 22, .14), transparent 50%),
        linear-gradient(180deg, #fff7ed, #ffffff 65%);
    padding: 64px 0 80px;
    text-align: center;
}
.sr-hero-inner { max-width: 860px; }
.sr-hero-title { font-size: 38px; line-height: 1.28; margin: 14px 0 16px; }
.sr-hero-sub {
    color: var(--ink-500);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto 40px;
}

/* 代码窗口 mock */
.sr-codewin {
    max-width: 640px;
    margin: 0 auto;
    background: var(--ink-900);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    text-align: left;
}
.sr-codebar {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #292524;
    padding: 12px 16px;
}
.sr-dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.sr-dot-red { background: #ef4444; }
.sr-dot-yellow { background: #f59e0b; }
.sr-dot-green { background: #22c55e; }
.sr-codefile {
    margin-left: 12px;
    font-size: 12px;
    color: var(--ink-400);
    font-family: "SFMono-Regular", Consolas, monospace;
}
.sr-codescreen { padding: 18px 20px 22px; overflow-x: auto; }
.sr-code {
    margin: 0;
    font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
    font-size: 13.5px;
    line-height: 1.9;
    color: #e7e5e4;
    white-space: pre;
}
.sr-ln {
    display: inline-block;
    width: 26px;
    color: #57534e;
    user-select: none;
    margin-right: 14px;
}
.sr-kw { color: #fb923c; font-weight: 600; }
.sr-str { color: #fde68a; }
.sr-com { color: #78716c; font-style: italic; }
.sr-var { color: #93c5fd; }
.sr-cls { color: #86efac; }

.sr-hero-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 22px;
    margin-top: 26px;
    font-size: 13.5px;
    color: var(--ink-500);
}

/* ---------- 授权档位卡 ---------- */
.sr-tiers { padding: 80px 0; }
.sr-tier-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}
.sr-tier-card {
    position: relative;
    background: #fff;
    border: 1.5px solid var(--ink-200);
    border-radius: var(--radius-lg);
    padding: 30px 26px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xs);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.sr-tier-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.sr-tier-card.is-hot {
    border-color: var(--orange-500);
    box-shadow: 0 18px 44px rgba(234, 88, 12, .18);
    background: linear-gradient(180deg, #fff, #fff7ed);
}
.sr-tier-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--orange-500), var(--orange-700));
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 18px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
    box-shadow: 0 6px 14px rgba(234, 88, 12, .35);
}
.sr-tier-name { font-size: 18px; color: var(--ink-700); }
.sr-tier-price { margin: 16px 0 6px; }
.sr-tier-price b { font-size: 34px; color: var(--orange-700); }
.sr-tier-price small { color: var(--ink-400); margin-left: 8px; font-size: 13px; }
.sr-tier-desc { font-size: 13.5px; color: var(--ink-500); padding-bottom: 16px; border-bottom: 1px dashed var(--ink-200); }
.sr-tier-feats { display: grid; gap: 10px; margin: 18px 0 26px; flex: 1; }
.sr-tier-feats li {
    font-size: 14px;
    color: var(--ink-700);
    padding-left: 24px;
    position: relative;
}
.sr-tier-feats li::before {
    content: "✓";
    position: absolute;
    left: 0;
    width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    font-size: 11px;
    color: #fff;
    background: var(--orange-500);
    border-radius: 50%;
    top: 3px;
}
.sr-tier-btn {
    display: block;
    text-align: center;
    height: 46px;
    line-height: 46px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 14.5px;
    border: 1.5px solid var(--orange-300);
    color: var(--orange-700);
    background: #fff;
    transition: background .18s ease, color .18s ease;
}
.sr-tier-btn:hover { background: var(--orange-50); color: var(--orange-600); }
.sr-tier-btn.is-solid {
    background: linear-gradient(135deg, var(--orange-500), var(--orange-700));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 10px 22px rgba(234, 88, 12, .32);
}
.sr-tier-btn.is-solid:hover { color: #fff; }

/* ---------- 技术栈图标网格 ---------- */
.sr-stack { background: #fff; border-top: 1px solid var(--ink-200); padding: 80px 0; }
.sr-stack-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}
.sr-stack-item {
    background: var(--ink-50);
    border: 1px solid var(--ink-200);
    border-radius: var(--radius);
    padding: 22px 20px;
    text-align: center;
    transition: border-color .18s ease, transform .18s ease, background .18s ease;
}
.sr-stack-item:hover {
    border-color: var(--orange-300);
    background: var(--orange-50);
    transform: translateY(-3px);
}
.sr-stack-item b {
    display: block;
    font-size: 16px;
    color: var(--ink-900);
    margin-bottom: 6px;
}
.sr-stack-item small { font-size: 12.5px; color: var(--ink-500); }

/* ---------- 交付物 checklist ---------- */
.sr-deliver { padding: 80px 0; }
.sr-deliver-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 44px; align-items: start; }
.sr-checklist { display: grid; gap: 12px; }
.sr-check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 14px;
    color: var(--ink-700);
}
.sr-check-item:nth-child(-n+6) { border-left: 4px solid var(--orange-500); }
.sr-check-box {
    flex-shrink: 0;
    width: 20px; height: 20px;
    display: grid; place-items: center;
    font-size: 12px;
    font-weight: 800;
    color: #fff;
    background: var(--green);
    border-radius: 6px;
}
.sr-check-item:nth-child(n+7) .sr-check-box { background: var(--ink-300); color: var(--ink-700); }

/* ---------- 服务承诺卡 ---------- */
.sr-promise { padding: 80px 0; }
.sr-promise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 30px;
}
.sr-promise-card {
    background: #fff;
    border: 1px solid var(--ink-200);
    border-top: 4px solid var(--orange-500);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    box-shadow: var(--shadow-xs);
}
.sr-promise-ico {
    width: 52px; height: 52px;
    margin: 0 auto 12px;
    display: grid; place-items: center;
    font-size: 24px;
    background: var(--orange-50);
    border-radius: 50%;
}
.sr-promise-card h3 { font-size: 16px; margin-bottom: 8px; }
.sr-promise-card p { font-size: 13px; color: var(--ink-500); }

.sr-scope {
    background: var(--ink-50);
    border: 1px solid var(--ink-200);
    border-radius: var(--radius-lg);
    padding: 26px 28px;
}
.sr-scope-title { font-size: 16.5px; margin-bottom: 14px; }
.sr-scope-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}
.sr-scope-chip {
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: var(--radius-pill);
    background: #fff;
    border: 1px solid var(--ink-200);
    color: var(--ink-700);
}
.sr-scope-chip.is-ok { color: var(--green); border-color: #bbf7d0; background: #f0fdf4; }
.sr-scope-chip.is-no { color: var(--red); border-color: #fecaca; background: #fef2f2; }
.sr-scope-note { font-size: 12.5px; color: var(--ink-400); }

/* ---------- 三种方式对比表 ---------- */
.sr-compare-sec { padding: 80px 0; }
.sr-col-hot { background: var(--orange-700); color: #fff; }
.sr-compare-table td:nth-child(2) { background: #fff7ed; }
.sr-compare-note {
    margin-top: 18px;
    font-size: 13.5px;
    color: var(--ink-500);
}
.sr-compare-note a { font-weight: 600; }

.sr-cta-band {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
    margin-top: 26px;
    background: linear-gradient(120deg, var(--ink-900), #44403c);
    border-radius: var(--radius-lg);
    padding: 26px 30px;
    color: var(--ink-200);
}
.sr-cta-text { flex: 1; min-width: 240px; }
.sr-cta-text h3 { color: #fff; font-size: 18px; margin-bottom: 6px; }
.sr-cta-text p { font-size: 13.5px; color: var(--ink-300); }
.sr-cta-flow {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 13px;
    font-weight: 700;
}
.sr-cta-flow span {
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: var(--radius-pill);
    padding: 8px 14px;
    color: #fff;
}
.sr-cta-flow i { font-style: normal; color: var(--orange-300); }
.sr-cta-btn {
    height: 42px;
    padding: 0 24px;
    font-size: 14px;
    background: linear-gradient(135deg, var(--orange-500), var(--orange-700));
    color: #fff;
    box-shadow: 0 8px 18px rgba(234, 88, 12, .3);
}
.sr-cta-btn:hover { color: #fff; }

/* ---------- 部署环境表 ---------- */
.sr-env { background: #fff; border-top: 1px solid var(--ink-200); padding: 80px 0 90px; }
.sr-table-wrap {
    border: 1px solid var(--ink-200);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
}
.sr-table th {
    background: var(--ink-900);
    color: #fff;
    text-align: left;
    padding: 14px 20px;
    font-size: 14px;
}
.sr-table td {
    padding: 14px 20px;
    font-size: 14px;
    color: var(--ink-700);
    border-top: 1px solid var(--ink-200);
    background: #fff;
}
.sr-table tbody tr:nth-child(even) td { background: var(--ink-50); }
.sr-table td b { color: var(--ink-900); }
.sr-table-rec { color: var(--orange-700) !important; font-weight: 600; }

.sr-env-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-top: 26px;
    background: var(--orange-50);
    border: 1px dashed var(--orange-300);
    border-radius: var(--radius);
    padding: 18px 24px;
    flex-wrap: wrap;
}
.sr-env-cta p { font-size: 14px; color: var(--ink-700); }
.sr-env-cta a { font-weight: 600; }
.sr-env-btn {
    background: linear-gradient(135deg, var(--orange-500), var(--orange-700));
    color: #fff;
    height: 42px;
    padding: 0 24px;
    font-size: 14px;
    box-shadow: 0 8px 18px rgba(234, 88, 12, .3);
}
.sr-env-btn:hover { color: #fff; }

/* ---------- 响应式 960px ---------- */
@media (max-width: 960px) {
    .sr-hero-title { font-size: 29px; }
    .sr-tier-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
    .sr-stack-grid { grid-template-columns: repeat(2, 1fr); }
    .sr-deliver-layout { grid-template-columns: 1fr; gap: 26px; }
    .sr-code { font-size: 12px; }
    .sr-promise-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 响应式 640px ---------- */
@media (max-width: 640px) {
    .sr-hero { padding: 44px 0 56px; }
    .sr-hero-title { font-size: 23px; }
    .sr-hero-sub { font-size: 14.5px; }
    .sr-tiers, .sr-stack, .sr-deliver, .sr-env { padding: 54px 0; }
    .sr-stack-grid { grid-template-columns: 1fr; }
    .sr-table th, .sr-table td { padding: 10px 12px; font-size: 13px; }
    .sr-env-cta { flex-direction: column; align-items: flex-start; }
    .sr-env-btn { width: 100%; }
    .sr-codewin { border-radius: 10px; }
}