/* ==========================================================================
   音创线上联运俱乐部 — 主样式表
   配色：深空灰 + 沥青黑 + 琥珀信号色（公路 / 货运语义），无紫色
   ========================================================================== */

:root {
    --bg:            #12141a;
    --bg-2:          #171a21;
    --panel:         #1c2029;
    --panel-2:       #222732;
    --line:          #2c323e;
    --line-soft:     #262b35;

    --text:          #e6e9ef;
    --text-2:        #a8b0bf;
    --text-3:        #6f7889;

    --amber:         #e0a03c;
    --amber-dark:    #c2842a;
    --amber-soft:    rgba(224, 160, 60, .12);

    --green:         #4c9a67;
    --red:           #b8503f;
    --blue:          #4a7fb5;

    --radius:        6px;
    --radius-lg:     10px;
    --radius-md:     8px;

    /* 真实感纹理：沥青噪点（SVG 湍流，极轻）+ 轮胎印 */
    --asphalt: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    /* 轮胎印：两条平行胎面（带横向花纹块） */
    --tire-track:
        repeating-linear-gradient(90deg, transparent 0 36px, rgba(0,0,0,.42) 36px 64px, transparent 64px 100px),
        repeating-linear-gradient(0deg, rgba(0,0,0,.5) 0 10px, rgba(0,0,0,.2) 10px 20px);

    --shadow:        0 1px 2px rgba(0,0,0,.4), 0 4px 14px rgba(0,0,0,.28);
    --shadow-lg:     0 10px 40px rgba(0,0,0,.5);

    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg);
    background-image:
        linear-gradient(180deg, rgba(14,16,21,.78) 0%, rgba(14,16,21,.55) 40%, rgba(14,16,21,.78) 100%),
        radial-gradient(1200px 600px at 80% 10%, rgba(0,0,0,.55), transparent 60%),
        radial-gradient(900px 500px at 15% -10%, rgba(224,160,60,.06), transparent 60%),
        url("/assets/images/Photorealistic_wide_angle_cine_2026-08-10T10-46-44.png");
    background-position: center top, center top, center top, center top;
    background-size: cover, auto, auto, cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: var(--text);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { color: var(--amber); text-decoration: none; }
a:hover { color: #f2b757; }

h1, h2, h3, h4 { margin: 0 0 .6em; font-weight: 600; letter-spacing: .01em; }
h1 { font-size: 26px; }
h2 { font-size: 20px; }
h3 { font-size: 17px; }

p { margin: 0 0 1em; }

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow { max-width: 520px; }
.container-mid    { max-width: 860px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
    background: rgba(14, 16, 21, .82);
    backdrop-filter: saturate(140%) blur(16px);
    border-bottom: 1px solid rgba(255,255,255,.08);
    position: sticky;
    top: 0;
    z-index: 50;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
    gap: 20px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 11px;
    color: var(--text);
    font-weight: 600;
    font-size: 16px;
    letter-spacing: .02em;
    flex-shrink: 0;
}
.brand:hover { color: var(--text); }
.brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    background:
        repeating-linear-gradient(90deg, rgba(0,0,0,.18) 0 2px, transparent 2px 5px),
        linear-gradient(150deg, var(--amber), var(--amber-dark));
    color: #1a1a1a;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 14px;
    font-family: var(--mono);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.28);
}
.brand-sub {
    font-size: 11px;
    color: var(--text-3);
    letter-spacing: .16em;
    text-transform: uppercase;
    display: block;
    line-height: 1.1;
    font-weight: 500;
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    color: var(--text-2);
    padding: 7px 13px;
    border-radius: var(--radius);
    font-size: 14px;
    transition: background .15s, color .15s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav-links a.active { color: var(--amber); background: var(--amber-soft); }

.nav-user { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--text-2);
    padding: 6px 10px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

/* ---------------- 主体 ---------------- */
main { flex: 1 0 auto; padding: 34px 0 60px; }

.page-head {
    border-bottom: 1px solid var(--line);
    padding-bottom: 18px;
    margin-bottom: 26px;
}
.page-head h1 { margin-bottom: 6px; }
.page-head .sub { color: var(--text-2); font-size: 14px; margin: 0; }

.eyebrow {
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--amber);
    font-weight: 600;
    margin-bottom: 10px;
    font-family: var(--mono);
}

/* ---------------- 越野 / 轮胎印元素 ---------------- */

/* 轮胎印水印：两条平行胎面，斜向铺在区块角落 */
.tire-mark {
    position: absolute;
    pointer-events: none;
    background-image: var(--tire-track);
    background-size: 100px 100px, 10px 20px;
    opacity: .4;
    filter: blur(.3px);
    border-radius: 4px;
    mix-blend-mode: multiply;
}
/* 单条轮胎印（带弧度感的左右双胎） */
.tire-print {
    position: absolute;
    pointer-events: none;
    width: 58px;
    height: 220px;
    background:
        linear-gradient(90deg,
            transparent 0 4px,
            rgba(10,10,10,.55) 4px 22px,
            transparent 22px 26px,
            rgba(10,10,10,.55) 26px 44px,
            transparent 44px 58px);
    background-size: 100% 26px;
    background-repeat: repeat-y;
    opacity: .35;
    border-radius: 6px;
}

/* 越野泥点斑驳（确定性散布的暗斑） */
.mud-spatter {
    position: absolute;
    pointer-events: none;
    inset: 0;
    opacity: .5;
    background-image:
        radial-gradient(circle at 12% 30%, rgba(0,0,0,.35) 0 3px, transparent 4px),
        radial-gradient(circle at 78% 18%, rgba(0,0,0,.30) 0 5px, transparent 6px),
        radial-gradient(circle at 64% 72%, rgba(0,0,0,.28) 0 4px, transparent 5px),
        radial-gradient(circle at 28% 84%, rgba(0,0,0,.32) 0 3px, transparent 4px),
        radial-gradient(circle at 92% 58%, rgba(0,0,0,.26) 0 6px, transparent 7px),
        radial-gradient(circle at 44% 12%, rgba(0,0,0,.22) 0 2px, transparent 3px);
}

/* 越野警示纹理条（斜向黄黑 HR 警示带） */
.hazard-strip {
    height: 8px;
    width: 100%;
    background-image: repeating-linear-gradient(
        -45deg,
        var(--amber) 0 14px,
        #15171c 14px 28px
    );
    border-top: 1px solid rgba(0,0,0,.4);
    border-bottom: 1px solid rgba(0,0,0,.4);
}

/* 卡片越野化处理：底部一道泥痕 + 边角磨损感 */
.card {
    position: relative;
}
.card.offroad::after {
    content: "";
    position: absolute;
    right: -18px; bottom: -14px;
    width: 110px; height: 150px;
    background-image: var(--tire-track);
    background-size: 60px 60px, 10px 18px;
    transform: rotate(-16deg);
    opacity: .1;
    pointer-events: none;
    border-radius: 6px;
}

/* 豪迈越野分隔线（带铆钉感） */
.offroad-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 30px 0;
    color: var(--text-3);
}
.offroad-divider::before,
.offroad-divider::after {
    content: "";
    flex: 1;
    height: 3px;
    border-radius: 3px;
    background:
        repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 14px);
}
.offroad-divider .rivet {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: linear-gradient(140deg, var(--amber), var(--amber-dark));
    box-shadow: inset 0 1px 0 rgba(255,255,255,.3), 0 0 0 3px var(--panel);
}

/* ---------------- 卡片 / 面板 ---------------- */
.card {
    background: rgba(30, 33, 42, .78);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0,0,0,.45);
    backdrop-filter: saturate(140%) blur(18px);
    -webkit-backdrop-filter: saturate(140%) blur(18px);
}
.card-pad { padding: 26px; }
.card-head {
    padding: 16px 22px;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}
.card-head h2, .card-head h3 { margin: 0; font-size: 16px; }
.card-body { padding: 22px; }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------------- 联运主管公示卡片 ---------------- */
.supervisor-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    overflow: hidden;
}
/* 卡片角落轮胎印 */
.supervisor-card::after {
    content: "";
    position: absolute;
    right: -16px; top: -10px;
    width: 90px; height: 120px;
    background-image: var(--tire-track);
    background-size: 50px 50px, 9px 16px;
    transform: rotate(-14deg);
    opacity: .12;
    pointer-events: none;
}
.sv-avatar {
    flex: 0 0 auto;
    width: 64px; height: 64px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--panel-2);
    border: 1px solid var(--line);
    box-shadow: 0 2px 6px rgba(0,0,0,.25);
}
.sv-avatar img {
    width: 100%; height: 100%;
    object-fit: cover; display: block;
}
.sv-info { min-width: 0; }
.sv-name { font-size: 17px; font-weight: 600; letter-spacing: .3px; }
.sv-sub { margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sv-link { display: inline-block; margin-top: 8px; }

/* ---------------- 表单 ---------------- */
.form-row { margin-bottom: 17px; }
.form-row:last-child { margin-bottom: 0; }

label.lbl {
    display: block;
    font-size: 13px;
    color: var(--text-2);
    margin-bottom: 7px;
    font-weight: 500;
}
label.lbl .req { color: var(--amber); margin-left: 2px; }

.input, input[type=text], input[type=password], input[type=email],
input[type=date], input[type=time], input[type=number], select, textarea {
    width: 100%;
    padding: 10px 13px;
    background: #14171e;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 84px; }

.input:focus, input:focus, select:focus, textarea:focus {
    border-color: var(--amber);
    box-shadow: 0 0 0 3px var(--amber-soft);
}
.input::placeholder, input::placeholder, textarea::placeholder { color: var(--text-3); }
.input:disabled, input:disabled, select:disabled {
    opacity: .55;
    cursor: not-allowed;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236f7889' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 13px center;
    padding-right: 34px;
}

.hint { font-size: 12.5px; color: var(--text-3); margin-top: 6px; line-height: 1.5; }

.input-group { display: flex; gap: 9px; }
.input-group .input, .input-group input { flex: 1; }

/* ---------------- 按钮 ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, border-color .15s, opacity .15s;
    white-space: nowrap;
    text-align: center;
}
.btn-primary {
    background: linear-gradient(180deg, var(--amber), var(--amber-dark));
    color: #1c1608;
    font-weight: 600;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover { color: #1c1608; filter: brightness(1.07); }
.btn-ghost {
    background: transparent;
    border-color: var(--line);
    color: var(--text-2);
}
.btn-ghost:hover { border-color: #414a5a; color: var(--text); background: rgba(255,255,255,.03); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { color: #fff; filter: brightness(1.1); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 13px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; filter: none; }

/* GitHub 登录按钮 */
.btn-github {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    background: #24292f;
    border-color: #3b424b;
    color: #fff;
    font-weight: 600;
}
.btn-github:hover {
    color: #fff;
    background: #32383f;
    border-color: #4b535d;
}
.btn-github svg { flex: 0 0 auto; }

/* 分隔线（或） */
.divider-or {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 18px 0;
    color: var(--text-3);
    font-size: 12px;
}
.divider-or::before,
.divider-or::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
}

/* ---------------- 提示条 ---------------- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    border-left-width: 3px;
    background: var(--panel-2);
    font-size: 14px;
    margin-bottom: 20px;
    color: var(--text);
}
.alert-error   { border-left-color: var(--red);   background: rgba(184,80,63,.10); }
.alert-success { border-left-color: var(--green); background: rgba(76,154,103,.10); }
.alert-info    { border-left-color: var(--blue);  background: rgba(74,127,181,.10); }
.alert-warn    { border-left-color: var(--amber); background: var(--amber-soft); }
.alert ul { margin: 6px 0 0; padding-left: 20px; }

/* ---------------- 徽章 ---------------- */
.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--line);
    color: var(--text-2);
    background: var(--panel-2);
    line-height: 1.6;
}
.badge-amber { color: var(--amber); border-color: rgba(224,160,60,.35); background: var(--amber-soft); }
.badge-green { color: #7cc496; border-color: rgba(76,154,103,.35); background: rgba(76,154,103,.10); }
.badge-red   { color: #d9806f; border-color: rgba(184,80,63,.35);  background: rgba(184,80,63,.10); }
.badge-blue  { color: #7fb0dd; border-color: rgba(74,127,181,.35); background: rgba(74,127,181,.10); }

/* ---------------- 表格 ---------------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }
table.tbl {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
table.tbl th, table.tbl td {
    padding: 11px 14px;
    text-align: left;
    border-bottom: 1px solid var(--line-soft);
    vertical-align: middle;
}
table.tbl th {
    background: var(--panel-2);
    color: var(--text-2);
    font-weight: 600;
    font-size: 12.5px;
    letter-spacing: .04em;
    white-space: nowrap;
}
table.tbl tbody tr:hover { background: rgba(255,255,255,.022); }
table.tbl tbody tr:last-child td { border-bottom: none; }
.mono { font-family: var(--mono); font-size: 13px; }

.empty {
    padding: 46px 20px;
    text-align: center;
    color: var(--text-3);
    font-size: 14px;
}

/* ---------------- 步骤条 ---------------- */
.steps {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.step { display: flex; align-items: center; gap: 9px; }
.step-num {
    width: 26px; height: 26px;
    border-radius: 50%;
    display: grid; place-items: center;
    font-size: 13px; font-weight: 600;
    border: 1px solid var(--line);
    color: var(--text-3);
    background: var(--panel);
    flex-shrink: 0;
}
.step-label { font-size: 13.5px; color: var(--text-3); white-space: nowrap; }
.step.active .step-num { background: var(--amber); border-color: var(--amber); color: #1c1608; }
.step.active .step-label { color: var(--text); font-weight: 500; }
.step.done .step-num { background: rgba(76,154,103,.16); border-color: rgba(76,154,103,.5); color: #7cc496; }
.step.done .step-label { color: var(--text-2); }
.step-line {
    width: 46px; height: 1px;
    background: var(--line);
    margin: 0 12px;
    flex-shrink: 0;
}

/* ---------------- 联运方式选择 ---------------- */
.mode-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.mode-card {
    display: block;
    background:
        radial-gradient(120px 120px at 85% 12%, rgba(224,160,60,.06), transparent 60%),
        var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: border-color .15s, transform .15s;
    position: relative;
    color: var(--text);
    overflow: hidden;
}
/* 卡片右下角轮胎印 */
.mode-card::after {
    content: "";
    position: absolute;
    right: -16px; bottom: -12px;
    width: 96px; height: 130px;
    background-image: var(--tire-track);
    background-size: 54px 54px, 9px 16px;
    transform: rotate(-15deg);
    opacity: .12;
    pointer-events: none;
}
.mode-card:hover { border-color: var(--amber); color: var(--text); transform: translateY(-2px); }
.mode-card.disabled {
    opacity: .5;
    pointer-events: none;
    filter: grayscale(1);
}
.mode-card h3 { margin-bottom: 6px; font-size: 18px; }
.mode-card p { color: var(--text-2); font-size: 13.5px; margin: 0; }
.mode-card .tag { position: absolute; top: 18px; right: 18px; }

/* ---------------- 日期网格 ---------------- */
.date-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
    gap: 12px;
}
.date-cell {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    padding: 14px;
    text-align: left;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    font-family: inherit;
    color: var(--text);
    display: block;
    width: 100%;
}
.date-cell:hover:not(.is-full):not(.is-none) { border-color: var(--amber); }
.date-cell.selected { border-color: var(--amber); background: var(--amber-soft); }
.date-cell .d-day { font-size: 17px; font-weight: 600; font-family: var(--mono); }
.date-cell .d-week { font-size: 12px; color: var(--text-3); margin-left: 6px; }
.date-cell .d-meta { font-size: 12.5px; color: var(--text-2); margin-top: 7px; }
.date-cell .d-bar {
    height: 3px;
    background: var(--line);
    border-radius: 2px;
    margin-top: 9px;
    overflow: hidden;
}
.date-cell .d-bar i { display: block; height: 100%; background: var(--amber); border-radius: 2px; }

/* 满员 / 无场次：灰色不可选 */
.date-cell.is-full, .date-cell.is-none {
    opacity: .42;
    cursor: not-allowed;
    filter: grayscale(1);
    background: var(--bg-2);
}
.date-cell.is-full .d-bar i { background: var(--red); }

/* ---------------- 场次条目 ---------------- */
.slot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 15px 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    margin-bottom: 11px;
    flex-wrap: wrap;
}
.slot:last-child { margin-bottom: 0; }
.slot-main { min-width: 0; }
.slot-title { font-weight: 600; font-size: 15px; margin-bottom: 3px; }
.slot-meta { font-size: 13px; color: var(--text-2); }

/* ---------------- Steam 校验结果 ---------------- */
.steam-box {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel-2);
    margin-top: 12px;
}
.steam-box.ok    { border-color: rgba(76,154,103,.45); background: rgba(76,154,103,.08); }
.steam-box.fail  { border-color: rgba(184,80,63,.45);  background: rgba(184,80,63,.08); }
.steam-box img {
    width: 52px; height: 52px;
    border-radius: 4px;
    object-fit: cover;
    background: var(--bg);
    flex-shrink: 0;
}
.steam-box .s-name { font-weight: 600; font-size: 15px; }
.steam-box .s-id { font-family: var(--mono); font-size: 12.5px; color: var(--text-3); }
.steam-box .s-msg { font-size: 13.5px; }

/* ---------------- MOD 列表 ---------------- */
.mod-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border-bottom: 1px solid var(--line-soft);
}
.mod-item:last-child { border-bottom: none; }
.mod-order {
    width: 30px; height: 30px;
    border-radius: 4px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    display: grid; place-items: center;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--amber);
    font-weight: 600;
    flex-shrink: 0;
}
.mod-name { font-weight: 500; }
.mod-note { font-size: 13px; color: var(--text-3); margin-top: 2px; word-break: break-all; }

/* ---------------- 统计块 ---------------- */
.stat {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
}
.stat .s-num { font-size: 27px; font-weight: 700; font-family: var(--mono); line-height: 1.2; }
.stat .s-lbl { font-size: 13px; color: var(--text-3); margin-top: 3px; }

/* ---------------- 首页 Hero ---------------- */
.hero {
    border: 1px solid rgba(255,255,255,.10);
    border-radius: var(--radius-lg);
    background: rgba(20, 23, 31, .62);
    backdrop-filter: saturate(160%) blur(24px);
    -webkit-backdrop-filter: saturate(160%) blur(24px);
    padding: 46px 40px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 18px 50px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
}
/* 越野黄黑警示带压在 hero 顶部 */
.hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 6px;
    background-image: repeating-linear-gradient(-45deg,
        var(--amber) 0 12px, #15171c 12px 24px);
    opacity: .85;
}
/* 轮胎印水印：右下角斜压两道胎面 */
.hero::after {
    content: "";
    position: absolute;
    right: -30px; bottom: -40px;
    width: 300px; height: 240px;
    background-image: var(--tire-track);
    background-size: 110px 110px, 12px 22px;
    transform: rotate(-18deg);
    opacity: .22;
    filter: blur(.4px);
    pointer-events: none;
}
/* 越野泥点斑驳 */
.hero .mud-spatter { opacity: .35; }
.hero h1 { font-size: 30px; margin-bottom: 12px; max-width: 640px; }
.hero p { color: var(--text-2); max-width: 620px; margin-bottom: 22px; }
.hero-actions { display: flex; gap: 11px; flex-wrap: wrap; }

/* 信息行 */
.kv { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line-soft); font-size: 14px; }
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--text-3); width: 96px; flex-shrink: 0; }
.kv .v { color: var(--text); word-break: break-all; }

/* ---------------- 页脚 ---------------- */
.site-footer {
    flex-shrink: 0;
    border-top: 1px solid rgba(255,255,255,.08);
    background: rgba(14, 16, 21, .78);
    backdrop-filter: saturate(140%) blur(18px);
    -webkit-backdrop-filter: saturate(140%) blur(18px);
    padding: 0 0 26px;
    font-size: 13px;
    color: var(--text-3);
    position: relative;
}
/* 页脚顶部越野黄黑警示带 */
.site-footer::before {
    content: "";
    display: block;
    height: 7px;
    background-image: repeating-linear-gradient(-45deg,
        var(--amber) 0 14px, #15171c 14px 28px);
    opacity: .8;
}
/* 页脚角落轮胎印 */
.site-footer::after {
    content: "";
    position: absolute;
    right: 18px; bottom: 14px;
    width: 120px; height: 120px;
    background-image: var(--tire-track);
    background-size: 60px 60px, 10px 18px;
    transform: rotate(12deg);
    opacity: .18;
    pointer-events: none;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-beian { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.footer-beian a { color: var(--text-3); }
.footer-beian a:hover { color: var(--amber); }
.footer-police { display: inline-flex; align-items: center; gap: 6px; }

/* ---------------- 后台布局 ---------------- */
.admin-shell { display: flex; min-height: 100vh; }
.admin-side {
    width: 218px;
    background: var(--bg-2);
    border-right: 1px solid var(--line);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.admin-side .side-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--line);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
}
.admin-menu { padding: 12px 10px; flex: 1; }
.admin-menu a {
    display: block;
    padding: 9px 14px;
    border-radius: var(--radius);
    color: var(--text-2);
    font-size: 14px;
    margin-bottom: 3px;
}
.admin-menu a:hover { background: rgba(255,255,255,.05); color: var(--text); }
.admin-menu a.active { background: var(--amber-soft); color: var(--amber); font-weight: 500; }
.admin-menu .menu-sep {
    font-size: 11px;
    color: var(--text-3);
    letter-spacing: .14em;
    text-transform: uppercase;
    padding: 14px 14px 6px;
    font-weight: 600;
}
.admin-side .side-foot { padding: 14px; border-top: 1px solid var(--line); }

.admin-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.admin-top {
    height: 58px;
    border-bottom: 1px solid var(--line);
    background: var(--bg-2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 16px;
}
.admin-body { padding: 26px; flex: 1; }

/* 工具类 */
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.text-c{text-align:center}.text-r{text-align:right}
.muted{color:var(--text-3)}.small{font-size:13px}
.flex{display:flex}.flex-between{display:flex;justify-content:space-between;align-items:center;gap:14px}
.gap-1{gap:8px}.gap-2{gap:16px}
.wrap{flex-wrap:wrap}
.hidden{display:none !important}
.nowrap{white-space:nowrap}

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .admin-side { position: fixed; left: -218px; transition: left .22s; z-index: 100; }
    .admin-side.open { left: 0; box-shadow: var(--shadow-lg); }
    .nav-toggle { display: inline-block; }
}

@media (max-width: 720px) {
    .container { padding: 0 16px; }
    .grid-2, .grid-3, .grid-4, .mode-grid { grid-template-columns: 1fr; }
    .hero { padding: 30px 22px; }
    .hero h1 { font-size: 23px; }
    h1 { font-size: 22px; }

    .nav-links {
        display: none;
        position: absolute;
        top: 62px; left: 0; right: 0;
        background: var(--bg-2);
        border-bottom: 1px solid var(--line);
        flex-direction: column;
        align-items: stretch;
        padding: 10px 16px;
        gap: 2px;
    }
    .nav-links.open { display: flex; }
    .footer-inner { flex-direction: column; align-items: flex-start; text-align: left; }
    .step-line { width: 20px; margin: 0 7px; }
    .step-label { display: none; }
    .card-pad, .card-body { padding: 18px; }
    .admin-body { padding: 16px; }
}