/* ==========================================================================
   NECC · 星域智控 —— 站点首页与培训页共用样式
   依赖：无外部字体 / 无外部图标库，图标全部内联 SVG
   ========================================================================== */

:root {
    --bg:        #060a11;
    --bg-soft:   #0a1019;
    --panel:     #0c131e;
    --panel-2:   #0e1723;
    --line:      #1a2433;
    --line-soft: #141d2a;
    --text:      #e8eef7;
    --muted:     #9aa9bd;
    --dim:       #6b7a8f;
    --hot:       #ff5a36;
    --hot-2:     #ff7a45;
    --cool:      #4cc9f0;
    --ok:        #3ddc97;
    --radius:    14px;
    --wrap:      1180px;
    --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
            "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(900px 600px at 8% -6%, rgba(255, 90, 54, .12), transparent 62%),
        radial-gradient(900px 700px at 96% 8%, rgba(76, 201, 240, .10), transparent 60%),
        radial-gradient(700px 500px at 50% 108%, rgba(61, 220, 151, .07), transparent 65%);
}

body > * { position: relative; z-index: 1; }

img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(255, 90, 54, .32); color: #fff; }

:focus-visible {
    outline: 2px solid var(--cool);
    outline-offset: 3px;
    border-radius: 4px;
}

.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 24px;
}

.skip {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 99;
    padding: 10px 16px;
    background: var(--hot);
    color: #fff;
    border-radius: 8px;
    transition: top .2s;
}
.skip:focus { top: 12px; }

/* ============================== 顶栏 ============================== */

.site-head {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid transparent;
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    background: rgba(6, 10, 17, .62);
    transition: border-color .25s, background .25s;
}
.site-head.is-stuck {
    border-bottom-color: var(--line);
    background: rgba(6, 10, 17, .9);
}

.head-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: 70px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}
.brand-mark {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    color: var(--hot);
    border: 1px solid rgba(255, 90, 54, .35);
    border-radius: 10px;
    background: linear-gradient(160deg, rgba(255, 90, 54, .16), rgba(255, 90, 54, .02));
    box-shadow: inset 0 0 18px rgba(255, 90, 54, .12);
}
.brand-mark svg { width: 20px; height: 20px; }
.brand-name {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: .12em;
    line-height: 1.15;
}
.brand-sub {
    display: block;
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 400;
    letter-spacing: .22em;
    color: var(--dim);
    margin-top: 3px;
}

.head-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}
.head-nav a {
    padding: 8px 13px;
    font-size: 14px;
    color: var(--muted);
    border-radius: 8px;
    transition: color .18s, background .18s;
}
.head-nav a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.head-nav .nav-cta { display: none; }

.head-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: 10px;
    padding: 9px 16px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--hot-2), var(--hot));
    box-shadow: 0 8px 22px -10px rgba(255, 90, 54, .85);
    white-space: nowrap;
    transition: transform .18s, box-shadow .18s;
}
.head-cta:hover { transform: translateY(-1px); box-shadow: 0 12px 26px -10px rgba(255, 90, 54, .95); }
.head-cta svg { width: 15px; height: 15px; }

.nav-toggle {
    display: none;
    margin-left: auto;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    color: var(--text);
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--line);
    border-radius: 10px;
    cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }

/* ============================== 按钮 ============================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 13px 22px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 11px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .18s, box-shadow .18s, border-color .18s, background .18s, color .18s;
    white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: 0 0 auto; }
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--hot-2), var(--hot));
    box-shadow: 0 14px 32px -14px rgba(255, 90, 54, .95);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 38px -14px rgba(255, 90, 54, 1); }
.btn-ghost {
    color: var(--text);
    background: rgba(255, 255, 255, .025);
    border-color: #263244;
}
.btn-ghost:hover { transform: translateY(-2px); border-color: #3b4a61; background: rgba(255, 255, 255, .05); }
.btn-cool {
    color: #04121a;
    background: linear-gradient(135deg, #7fe0fb, var(--cool));
    box-shadow: 0 14px 32px -14px rgba(76, 201, 240, .9);
}
.btn-cool:hover { transform: translateY(-2px); }
.btn-sm { padding: 10px 16px; font-size: 14px; border-radius: 9px; }

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--cool);
}
.text-link svg { width: 15px; height: 15px; transition: transform .18s; }
.text-link:hover svg { transform: translateX(3px); }

/* ============================== 首屏 ============================== */

.hero {
    position: relative;
    padding: 84px 0 66px;
    overflow: hidden;
}
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(148, 163, 184, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, .055) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 30%, transparent 78%);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 48px;
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 6px 13px 6px 8px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .12em;
    color: #ffb9a5;
    background: rgba(255, 90, 54, .08);
    border: 1px solid rgba(255, 90, 54, .22);
    border-radius: 999px;
}
.kicker .pulse-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--hot);
    box-shadow: 0 0 0 0 rgba(255, 90, 54, .6);
    animation: dot-pulse 2.4s ease-out infinite;
}
@keyframes dot-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(255, 90, 54, .55); }
    70%  { box-shadow: 0 0 0 9px rgba(255, 90, 54, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 90, 54, 0); }
}

.hero h1 {
    margin-top: 22px;
    font-size: clamp(2.5rem, 5.4vw, 4.15rem);
    line-height: 1.06;
    letter-spacing: -.025em;
    font-weight: 800;
    text-wrap: balance;
}
.hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, var(--hot-2) 5%, #ffb199 48%, var(--cool) 105%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-lede {
    margin-top: 22px;
    max-width: 36em;
    font-size: 17px;
    color: var(--muted);
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}
.hero-quick {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    margin-top: 30px;
    padding-top: 24px;
    border-top: 1px solid var(--line-soft);
}
.hero-quick a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13.5px;
    color: var(--muted);
}
.hero-quick a:hover { color: var(--text); }
.hero-quick svg { width: 15px; height: 15px; color: var(--dim); }

/* --- 首屏右侧示意图 --- */

.hero-visual {
    position: relative;
    aspect-ratio: 1 / 1.02;
    border-radius: 20px;
    border: 1px solid var(--line);
    background:
        radial-gradient(circle at 62% 38%, rgba(76, 201, 240, .10), transparent 55%),
        linear-gradient(170deg, #0d1622, #080d15 70%);
    overflow: hidden;
    box-shadow: 0 40px 90px -50px rgba(0, 0, 0, .9), inset 0 1px 0 rgba(255, 255, 255, .04);
}
.hero-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(148, 163, 184, .07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, .07) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: radial-gradient(circle at 50% 50%, #000 40%, transparent 88%);
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 40%, transparent 88%);
}
.hv-svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.ring { fill: none; stroke: rgba(76, 201, 240, .22); stroke-width: 1; }
.ring-soft { fill: none; stroke: rgba(148, 163, 184, .13); stroke-width: 1; stroke-dasharray: 3 7; }
.sweep {
    fill: url(#sweepGrad);
    opacity: .5;
    transform-origin: 260px 235px;
    animation: sweep-spin 9s linear infinite;
}
@keyframes sweep-spin { to { transform: rotate(360deg); } }

.route {
    fill: none;
    stroke: var(--hot);
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 0 6px rgba(255, 90, 54, .55));
    stroke-dasharray: 8 9;
    animation: route-move 14s linear infinite;
}
@keyframes route-move { to { stroke-dashoffset: -340; } }

.pin {
    fill: var(--hot);
    filter: drop-shadow(0 0 7px rgba(255, 90, 54, .8));
}
.pin-cool { fill: var(--cool); filter: drop-shadow(0 0 7px rgba(76, 201, 240, .85)); }
.sonar {
    fill: none;
    stroke: var(--hot);
    stroke-width: 1.4;
    animation: sonar 3.2s ease-out infinite;
}
.sonar-2 { animation-delay: 1.1s; }
.sonar-3 { animation-delay: 2.2s; }
@keyframes sonar {
    0%   { r: 8;  opacity: .7; }
    100% { r: 42; opacity: 0; }
}

.hv-label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .16em;
    fill: rgba(154, 169, 189, .8);
}
.hv-line { stroke: rgba(148, 163, 184, .22); stroke-width: 1; stroke-dasharray: 2 4; }

.chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 13px;
    font-size: 12px;
    line-height: 1.2;
    color: #d7e2f0;
    background: rgba(9, 15, 24, .88);
    border: 1px solid #223146;
    border-radius: 10px;
    box-shadow: 0 14px 30px -18px rgba(0, 0, 0, .95);
    white-space: nowrap;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.chip b { color: #fff; font-weight: 700; }
.chip .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--ok);
    box-shadow: 0 0 9px rgba(61, 220, 151, .9);
    flex: 0 0 auto;
}
.chip .dot-hot { background: var(--hot); box-shadow: 0 0 9px rgba(255, 90, 54, .9); }
.chip .dot-cool { background: var(--cool); box-shadow: 0 0 9px rgba(76, 201, 240, .9); }
.chip--a { top: 11%; left: 7%; }
.chip--b { top: 44%; right: 5%; }
.chip--c { bottom: 11%; left: 12%; }
.chip small {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .08em;
    color: var(--dim);
}

/* ============================== 能力条 ============================== */

.strip {
    border-top: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
    background: rgba(10, 16, 25, .55);
}
.strip-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
}
.strip-item {
    padding: 22px 24px;
    border-left: 1px solid var(--line-soft);
}
.strip-item:first-child { border-left: 0; }
.strip-item strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .01em;
}
.strip-item span {
    display: block;
    margin-top: 4px;
    font-size: 12.5px;
    color: var(--dim);
}

/* ============================== 区块通用 ============================== */

.section { padding: 92px 0; }
.section--tight { padding: 72px 0; }
.section--panel {
    background: linear-gradient(180deg, rgba(12, 19, 30, .7), rgba(6, 10, 17, .2));
    border-top: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
}

.sec-head {
    display: grid;
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 20px 48px;
    align-items: end;
    padding-top: 26px;
    border-top: 1px solid var(--line);
    margin-bottom: 42px;
}
.sec-no {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .3em;
    color: var(--hot);
    margin-bottom: 10px;
}
.sec-title {
    font-size: clamp(1.7rem, 3.2vw, 2.45rem);
    line-height: 1.16;
    letter-spacing: -.02em;
    font-weight: 800;
    text-wrap: balance;
}
.sec-lede {
    font-size: 15.5px;
    color: var(--muted);
    max-width: 40em;
    padding-bottom: 4px;
}

/* ============================== 功能卡片 ============================== */

.cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 26px 24px 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(178deg, var(--panel-2), #090f18 78%);
    transition: transform .22s, border-color .22s, box-shadow .22s;
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(76, 201, 240, .55), transparent);
    opacity: 0;
    transition: opacity .22s;
}
.card:hover {
    transform: translateY(-4px);
    border-color: #2a3a50;
    box-shadow: 0 26px 50px -34px rgba(0, 0, 0, .95);
}
.card:hover::before { opacity: 1; }

.card-top {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.card-icon {
    flex: 0 0 auto;
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    color: var(--cool);
    background: rgba(76, 201, 240, .08);
    border: 1px solid rgba(76, 201, 240, .2);
}
.card-icon svg { width: 21px; height: 21px; }
.card-icon.hot { color: var(--hot-2); background: rgba(255, 90, 54, .09); border-color: rgba(255, 90, 54, .24); }
.card-icon.ok { color: var(--ok); background: rgba(61, 220, 151, .08); border-color: rgba(61, 220, 151, .22); }

.card h3 {
    font-size: 17.5px;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.01em;
}
.card h3 a { transition: color .18s; }
.card h3 a:hover { color: var(--cool); }
.card-path {
    display: block;
    margin-top: 4px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: .06em;
    color: var(--dim);
}
.card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
    flex: 1 1 auto;
}
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 2px;
}
.tag {
    padding: 3px 9px;
    font-size: 11.5px;
    color: #a9b8cc;
    background: rgba(255, 255, 255, .035);
    border: 1px solid #1f2a3a;
    border-radius: 999px;
    white-space: nowrap;
}
.tag-hot { color: #ffc0ae; border-color: rgba(255, 90, 54, .28); background: rgba(255, 90, 54, .08); }
.tag-auth { color: #ffe1a8; border-color: rgba(255, 196, 87, .26); background: rgba(255, 196, 87, .07); }

.card--wide { grid-column: span 2; }
.card--wide p { max-width: 46em; }

/* 宽卡内的迷你地图 */
.mini-map {
    margin-top: 4px;
    border: 1px solid var(--line-soft);
    border-radius: 10px;
    background:
        radial-gradient(circle at 70% 30%, rgba(76, 201, 240, .12), transparent 55%),
        #070d15;
    overflow: hidden;
}
.mini-map svg { display: block; width: 100%; height: 108px; }
.mini-grid { stroke: rgba(148, 163, 184, .10); stroke-width: 1; }
.mini-route { fill: none; stroke: var(--hot); stroke-width: 2; stroke-linecap: round; }
.mini-node { fill: #0a1019; stroke: var(--cool); stroke-width: 1.6; }
.mini-node-hot { fill: var(--hot); stroke: #ffb9a5; stroke-width: 1.2; }

.more-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 14px;
    margin-top: 26px;
    padding: 16px 20px;
    border: 1px dashed #223044;
    border-radius: 12px;
    background: rgba(255, 255, 255, .015);
}
.more-links span {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: .18em;
    color: var(--dim);
    margin-right: 4px;
}
.more-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    color: var(--muted);
    padding: 5px 11px;
    border: 1px solid #1d2838;
    border-radius: 7px;
    transition: color .18s, border-color .18s;
}
.more-links a:hover { color: var(--text); border-color: #35455c; }
.more-links em {
    font-style: normal;
    font-size: 10px;
    font-family: var(--mono);
    color: #d8b56b;
}

/* ============================== 应用场景 ============================== */

.scene-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}
.scene {
    padding: 28px 26px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: rgba(10, 16, 25, .35);
    transition: background .22s;
}
.scene:hover { background: rgba(14, 23, 35, .8); }
.scene-idx {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .18em;
    color: var(--dim);
}
.scene h3 {
    margin-top: 10px;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -.01em;
}
.scene p {
    margin-top: 9px;
    font-size: 13.8px;
    color: var(--muted);
    line-height: 1.72;
}
.scene ul {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
}
.scene li {
    font-size: 11.5px;
    color: #9fb0c5;
    padding: 3px 8px;
    border-radius: 5px;
    background: rgba(255, 255, 255, .035);
}

/* ============================== 培训与认证 ============================== */

.training-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 16px;
}
.panel {
    position: relative;
    padding: 34px 32px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: linear-gradient(165deg, #0f1926, #080e17 72%);
    overflow: hidden;
}
.panel::after {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    right: -140px;
    top: -170px;
    background: radial-gradient(circle, rgba(255, 90, 54, .16), transparent 70%);
    pointer-events: none;
}
.panel--cert::after { background: radial-gradient(circle, rgba(76, 201, 240, .16), transparent 70%); }
.panel-kicker {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: .24em;
    color: var(--dim);
}
.panel h3 {
    margin-top: 10px;
    font-size: clamp(1.35rem, 2.4vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -.015em;
}
.panel p {
    margin-top: 12px;
    font-size: 14.5px;
    color: var(--muted);
    max-width: 42em;
}
.panel-list {
    display: grid;
    gap: 9px;
    margin-top: 20px;
}
.panel-list li {
    position: relative;
    padding-left: 22px;
    font-size: 14px;
    color: #c3cfdd;
}
.panel-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: .62em;
    width: 7px;
    height: 7px;
    border: 1.5px solid var(--hot);
    border-radius: 2px;
    transform: rotate(45deg);
}
.panel--cert .panel-list li::before { border-color: var(--cool); }

.panel-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 26px;
}
.levels {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}
.level {
    flex: 1 1 0;
    min-width: 62px;
    padding: 11px 8px;
    text-align: center;
    border: 1px solid #24334a;
    border-radius: 9px;
    background: rgba(76, 201, 240, .04);
}
.level b {
    display: block;
    font-size: 14px;
    color: #dceaf8;
}
.level span {
    display: block;
    margin-top: 2px;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .1em;
    color: var(--dim);
}

.cert-example {
    margin-top: 20px;
    padding: 14px 16px;
    border: 1px dashed #26374e;
    border-radius: 10px;
    background: rgba(6, 11, 18, .55);
}
.cert-example dt {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .18em;
    color: var(--dim);
}
.cert-example dd {
    margin: 5px 0 0;
    font-family: var(--mono);
    font-size: 15px;
    color: var(--cool);
    letter-spacing: .04em;
}

/* ============================== 流程 ============================== */

.flow {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    counter-reset: flow;
}
.flow-step {
    position: relative;
    padding: 0 26px 0 0;
}
.flow-step::before {
    content: "";
    position: absolute;
    top: 15px;
    left: 38px;
    right: 8px;
    height: 1px;
    background: linear-gradient(90deg, #2a3a50, #1a2433);
}
.flow-step:last-child::before { display: none; }
.flow-num {
    position: relative;
    z-index: 1;
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--hot-2);
    border: 1px solid rgba(255, 90, 54, .35);
    border-radius: 50%;
    background: #0b121c;
}
.flow-step h3 {
    margin-top: 18px;
    font-size: 16px;
    font-weight: 700;
}
.flow-step p {
    margin-top: 7px;
    font-size: 13.5px;
    color: var(--muted);
    padding-right: 14px;
}

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

.endcap {
    padding: 70px 0 84px;
}
.endcap-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 44px 40px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background:
        radial-gradient(600px 260px at 88% 10%, rgba(255, 90, 54, .14), transparent 65%),
        linear-gradient(160deg, #0f1927, #080e17);
}
.endcap h2 {
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    font-weight: 800;
    letter-spacing: -.02em;
}
.endcap p {
    margin-top: 8px;
    font-size: 14.5px;
    color: var(--muted);
    max-width: 46em;
}

/* ============================== 页脚 ============================== */

.site-foot {
    border-top: 1px solid var(--line);
    background: rgba(5, 8, 13, .8);
    padding: 46px 0 0;
}
.foot-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, .8fr)) minmax(0, .9fr);
    gap: 36px;
}
.foot-brand p {
    margin-top: 14px;
    font-size: 13.5px;
    color: var(--dim);
    max-width: 32em;
    line-height: 1.8;
}
.foot-col h4 {
    font-family: var(--mono);
    font-size: 10.5px;
    font-weight: 400;
    letter-spacing: .22em;
    color: var(--dim);
}
.foot-col ul {
    display: grid;
    gap: 9px;
    margin-top: 14px;
}
.foot-col a {
    font-size: 13.5px;
    color: var(--muted);
}
.foot-col a:hover { color: var(--text); }
.foot-note {
    margin-top: 36px;
    padding: 18px 0;
    border-top: 1px solid var(--line-soft);
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    justify-content: space-between;
    font-size: 12px;
    color: var(--dim);
}
.foot-note a { color: var(--dim); }
.foot-note a:hover { color: var(--muted); }

/* ============================== 培训页 ============================== */

.subhero {
    padding: 66px 0 54px;
    border-bottom: 1px solid var(--line-soft);
    background:
        radial-gradient(700px 340px at 12% 0%, rgba(255, 90, 54, .12), transparent 62%),
        radial-gradient(700px 360px at 90% 20%, rgba(76, 201, 240, .08), transparent 60%);
}
.crumb {
    display: flex;
    width: fit-content;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: var(--dim);
    margin-bottom: 22px;
}
.crumb:hover { color: var(--muted); }
.subhero h1 {
    font-size: clamp(2rem, 4.4vw, 3.2rem);
    line-height: 1.1;
    letter-spacing: -.025em;
    font-weight: 800;
    text-wrap: balance;
}
.subhero p {
    margin-top: 16px;
    max-width: 44em;
    font-size: 16px;
    color: var(--muted);
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.course {
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(178deg, var(--panel-2), #090f18 80%);
}
.course-no {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: .2em;
    color: var(--hot);
}
.course h3 {
    margin-top: 9px;
    font-size: 17px;
    font-weight: 700;
}
.course p {
    margin-top: 8px;
    font-size: 13.8px;
    color: var(--muted);
    line-height: 1.72;
}

.audience {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}
.audience li {
    padding: 18px 18px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: rgba(12, 19, 30, .6);
}
.audience b { display: block; font-size: 15px; }
.audience span {
    display: block;
    margin-top: 5px;
    font-size: 12.5px;
    color: var(--dim);
}

.level-grid {
    display: grid;
    gap: 12px;
}
.level-row {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr) 150px;
    align-items: center;
    gap: 20px;
    padding: 20px 22px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(12, 19, 30, .55);
}
.level-row b {
    font-size: 16px;
    letter-spacing: .02em;
}
.level-row p { font-size: 13.6px; color: var(--muted); }
.level-row span {
    justify-self: end;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--dim);
    text-align: right;
}

.apply-box {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 16px;
}
.apply-main, .apply-side {
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: linear-gradient(165deg, #0f1926, #080e17 75%);
}
.apply-main h3, .apply-side h3 {
    font-size: 19px;
    font-weight: 700;
}
.apply-main p, .apply-side p {
    margin-top: 10px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.75;
}
.apply-side {
    border-style: dashed;
    background: rgba(9, 15, 24, .6);
}
.apply-side dl {
    margin: 18px 0 0;
    display: grid;
    gap: 12px;
}
.apply-side dt {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .18em;
    color: var(--dim);
}
.apply-side dd {
    margin: 3px 0 0;
    font-size: 14px;
    color: #cbd7e5;
}

/* ============================== 响应式 ============================== */

@media (max-width: 1080px) {
    .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card--wide { grid-column: span 2; }
    .scene-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .training-grid { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .audience { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .hero { padding: 54px 0 46px; }
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
    .sec-head { grid-template-columns: 1fr; gap: 14px; align-items: start; }
    .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 0; }
    .flow-step:nth-child(2)::before { display: none; }
    .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .apply-box { grid-template-columns: 1fr; }
    .level-row { grid-template-columns: 80px minmax(0, 1fr); }
    .level-row span { grid-column: 2; justify-self: start; text-align: left; }
}

@media (max-width: 760px) {
    .head-inner { height: 62px; gap: 14px; }
    .head-nav, .head-cta { display: none; }
    .nav-toggle { display: inline-flex; }

    .site-head.is-open {
        background: var(--bg);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border-bottom-color: var(--line);
    }
    .site-head.is-open .head-nav {
        display: flex;
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 10px 16px 18px;
        border-bottom: 1px solid var(--line);
        background: var(--bg);
        box-shadow: 0 26px 40px -18px rgba(0, 0, 0, .9);
    }
    .site-head.is-open .head-nav a { padding: 12px 10px; font-size: 15px; }
    .site-head.is-open .head-nav .nav-cta {
        display: inline-flex;
        justify-content: center;
        margin-top: 8px;
        padding: 12px;
        border-radius: 9px;
        font-weight: 600;
        color: #fff;
        background: linear-gradient(135deg, var(--hot-2), var(--hot));
    }

    .hero h1 { font-size: clamp(2.1rem, 8vw, 2.8rem); }
    .hero-lede { font-size: 15.5px; }
    .hero-actions .btn { flex: 1 1 100%; }
    .chip { font-size: 11px; padding: 7px 10px; }
    .chip--a { left: 4%; }
    .chip--c { left: 6%; }

    .strip-grid { grid-template-columns: repeat(2, 1fr); }
    .strip-item { border-left: 0; border-top: 1px solid var(--line-soft); padding: 18px; }
    .strip-item:nth-child(-n+2) { border-top: 0; }

    .section { padding: 64px 0; }
    .cards, .scene-grid, .course-grid { grid-template-columns: 1fr; }
    .card--wide { grid-column: auto; }
    .sec-head { margin-bottom: 30px; }
    .panel { padding: 26px 22px; }
    .flow { grid-template-columns: 1fr; gap: 26px; }
    .flow-step::before { display: none; }
    .flow-step p { padding-right: 0; }
    .endcap-inner { padding: 30px 24px; }
    .endcap-inner .btn { flex: 1 1 100%; }
    .foot-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
    .audience { grid-template-columns: 1fr; }
    .level-row { padding: 16px; gap: 12px; }
    .apply-main, .apply-side { padding: 24px; }
    .subhero { padding: 44px 0 38px; }
    .more-links { padding: 14px; }
}

@media (max-width: 460px) {
    .wrap { padding: 0 18px; }
    .brand-name { font-size: 15px; }
    .foot-grid { grid-template-columns: 1fr; }
    .chip--b { right: 2%; }
}

/* ============================== 动效降级 ============================== */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
}

/* ============================== 打印 ============================== */

@media print {
    body { background: #fff; color: #111; }
    body::before, .site-head, .endcap, .site-foot { display: none; }
    .hero, .section { padding: 18px 0; }
    .card, .scene, .panel, .course { border-color: #ccc; background: #fff; }
    .card p, .scene p, .panel p, .hero-lede { color: #333; }
}