/* ==========================================================================
   煦宇智学 · 南京煦宇科技有限公司 官网样式
   主色 靛蓝 #4f46e5 + 紫 #7c3aed，强调 晨光琥珀 #fbbf24
   ========================================================================== */

:root {
    --indigo: #4f46e5;
    --violet: #7c3aed;
    --amber: #fbbf24;
    --amber-deep: #f59e0b;

    --ink: #1e1b3a;
    --ink-soft: #4b4869;
    --muted: #76739a;

    --bg: #f6f5ff;
    --bg-2: #efeafe;
    --surface: #ffffff;
    --surface-soft: #faf9ff;
    --line: #e7e3fb;

    --dawn: linear-gradient(100deg, #4f46e5 0%, #7c3aed 48%, #fbbf24 110%);
    --dawn-soft: linear-gradient(135deg, rgba(79,70,229,.12), rgba(124,58,237,.10) 55%, rgba(251,191,36,.16));

    --radius: 16px;
    --radius-lg: 22px;
    --radius-sm: 12px;

    --shadow-sm: 0 4px 14px rgba(46, 16, 101, .06);
    --shadow: 0 14px 40px rgba(46, 16, 101, .10);
    --shadow-lg: 0 26px 70px rgba(46, 16, 101, .16);

    --shell: 1140px;
    --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 800; letter-spacing: -.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; }

.shell { width: min(100% - 40px, var(--shell)); margin-inline: auto; }

.dawn-text {
    background: var(--dawn);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--violet);
}

.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 200;
    background: var(--indigo); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 20px; border-radius: 999px; font-weight: 700; font-size: 15px;
    border: 1px solid transparent; cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s;
    white-space: nowrap;
}
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-primary {
    color: #fff;
    background: linear-gradient(120deg, var(--indigo), var(--violet));
    box-shadow: 0 12px 26px rgba(79, 70, 229, .30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(124, 58, 237, .38); }
.btn-ghost {
    color: var(--indigo); background: var(--surface);
    border-color: var(--line); box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--violet); color: var(--violet); }

/* ---------- 顶部导航 ---------- */
.topbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(246, 245, 255, .82);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid rgba(231, 227, 251, .8);
    transition: box-shadow .25s var(--ease);
}
.topbar-inner { display: flex; align-items: center; gap: 22px; height: 70px; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; }
.logo-mark { width: 36px; height: 36px; flex: none; filter: drop-shadow(0 6px 12px rgba(79,70,229,.28)); }
.logo-mark svg { width: 100%; height: 100%; }
.logo-text { font-size: 19px; color: var(--ink); }
.logo-text i { font-style: normal; color: var(--violet); font-weight: 700; }

.topnav { margin-left: auto; display: flex; gap: 28px; }
.topnav a { font-size: 15px; color: var(--ink-soft); font-weight: 600; position: relative; padding: 6px 0; }
.topnav a::after {
    content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
    background: var(--dawn); border-radius: 2px; transition: width .25s var(--ease);
}
.topnav a:hover { color: var(--indigo); }
.topnav a:hover::after { width: 100%; }

.topbar-cta { margin-left: 4px; }

.burger {
    display: none; margin-left: auto; width: 44px; height: 40px; border: 1px solid var(--line);
    background: var(--surface); border-radius: 12px; cursor: pointer; flex-direction: column;
    align-items: center; justify-content: center; gap: 5px;
}
.burger span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.drawer { display: none; }
.drawer:not([hidden]) {
    display: flex; flex-direction: column; gap: 4px; padding: 14px 20px 22px;
    background: var(--surface); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.drawer a { padding: 13px 12px; border-radius: 10px; font-weight: 600; color: var(--ink-soft); }
.drawer a:hover { background: var(--bg-2); color: var(--indigo); }
.drawer .btn { margin-top: 8px; }

/* ---------- 通用区块标题 ---------- */
section { padding: 84px 0; }
.sec-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.sec-kicker {
    display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .12em;
    text-transform: uppercase; color: var(--violet);
    background: var(--dawn-soft); padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
}
.sec-title { font-size: clamp(26px, 3.6vw, 38px); }
.sec-lead { margin-top: 16px; color: var(--muted); font-size: 17px; }

/* ---------- Hero ---------- */
.lead { position: relative; overflow: hidden; padding: 72px 0 92px; }
.lead-aurora {
    position: absolute; z-index: 0; border-radius: 50%; filter: blur(70px); opacity: .55;
    width: 540px; height: 540px; top: -180px; left: -120px;
    background: radial-gradient(circle, rgba(124,58,237,.45), transparent 68%);
}
.lead-aurora-amber {
    width: 420px; height: 420px; top: 120px; left: auto; right: -120px;
    background: radial-gradient(circle, rgba(251,191,36,.42), transparent 66%);
}
.lead-inner {
    position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr;
    gap: 56px; align-items: center;
}
.lead-eyebrow {
    display: inline-block; font-size: 14px; font-weight: 700; color: var(--indigo);
    background: var(--surface); border: 1px solid var(--line); padding: 7px 16px;
    border-radius: 999px; box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.lead-title { font-size: clamp(38px, 6vw, 62px); line-height: 1.08; letter-spacing: -.02em; }
.lead-sub { margin-top: 22px; font-size: 18px; color: var(--ink-soft); max-width: 520px; }
.lead-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.lead-trust { margin-top: 38px; display: flex; gap: 34px; flex-wrap: wrap; }
.lead-trust li { display: flex; flex-direction: column; }
.lead-trust strong { font-size: 24px; color: var(--ink);
    background: var(--dawn); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lead-trust span { font-size: 13px; color: var(--muted); }

/* 学习看板 */
.lead-board { position: relative; min-height: 380px; }
.board-card {
    position: absolute; background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 18px 20px; width: 250px;
}
.board-card-a { top: 8px; left: 0; transform: rotate(-3deg); z-index: 3; }
.board-card-b { bottom: 6px; right: 0; transform: rotate(2.5deg); z-index: 3; }
.board-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.board-badge { font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.board-badge-live { color: #fff; background: linear-gradient(120deg, var(--indigo), var(--violet)); position: relative; padding-left: 22px; }
.board-badge-live::before {
    content: ""; position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
    width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 0 rgba(251,191,36,.7);
    animation: pulse 1.8s infinite;
}
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(251,191,36,.6); } 70% { box-shadow: 0 0 0 8px rgba(251,191,36,0); } 100% { box-shadow: 0 0 0 0 rgba(251,191,36,0); } }
.board-badge-quiz { color: var(--violet); background: var(--bg-2); }
.board-time { font-size: 13px; color: var(--muted); font-weight: 700; }
.board-course { font-weight: 800; font-size: 16px; color: var(--ink); }
.board-tutor { font-size: 13px; color: var(--muted); margin-top: 4px; }
.board-bar { margin-top: 14px; height: 7px; border-radius: 999px; background: var(--bg-2); overflow: hidden; }
.board-bar i { display: block; height: 100%; background: var(--dawn); border-radius: 999px; }
.board-dots { display: flex; gap: 6px; margin: 12px 0 8px; }
.board-dots li { width: 22px; height: 7px; border-radius: 999px; background: var(--bg-2); }
.board-dots li.ok { background: linear-gradient(120deg, var(--indigo), var(--violet)); }
.board-note { font-size: 13px; color: var(--muted); }

.board-ring {
    position: absolute; top: 132px; left: 50%; transform: translateX(-46%);
    width: 150px; height: 150px; z-index: 2;
    background: var(--surface); border-radius: 50%; box-shadow: var(--shadow-lg);
    display: grid; place-items: center; border: 1px solid var(--line);
}
.board-ring svg { width: 122px; height: 122px; transform: rotate(-90deg); position: absolute; }
.ring-track { fill: none; stroke: var(--bg-2); stroke-width: 11; }
.ring-fill {
    fill: none; stroke: url(#lg); stroke-width: 11; stroke-linecap: round;
    stroke: var(--violet);
    stroke-dasharray: 314; stroke-dashoffset: 41; /* ~87% */
}
.board-ring-label { text-align: center; position: relative; }
.board-ring-label strong { font-size: 30px; color: var(--violet); }
.board-ring-label span { display: block; font-size: 12px; color: var(--muted); margin-top: -2px; }

.board-chip {
    position: absolute; background: var(--surface); border: 1px solid var(--line);
    border-radius: 999px; padding: 9px 14px; font-size: 12.5px; font-weight: 700; color: var(--ink-soft);
    box-shadow: var(--shadow); display: inline-flex; align-items: center; gap: 7px; z-index: 4;
}
.board-chip-ai { top: -8px; right: 8px; }
.board-chip-ai svg { flex: none; }
.board-chip-home { bottom: -10px; left: 18px; color: var(--violet); }

/* ---------- 核心产品 ---------- */
.module-sec { background: linear-gradient(180deg, var(--bg), var(--surface-soft)); }
.module-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.module {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 30px 28px; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
    position: relative; overflow: hidden;
}
.module::before {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--dawn);
    transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.module:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.module:hover::before { transform: scaleX(1); }
.module-icon {
    width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center;
    margin-bottom: 18px; color: #fff;
}
.module-icon-class { background: linear-gradient(135deg, #4f46e5, #6d28d9); }
.module-icon-quiz { background: linear-gradient(135deg, #7c3aed, #9333ea); }
.module-icon-ai { background: linear-gradient(135deg, #6366f1, #f59e0b); }
.module-icon-home { background: linear-gradient(135deg, #4338ca, #7c3aed); }
.module h3 { font-size: 21px; margin-bottom: 10px; }
.module p { color: var(--ink-soft); font-size: 15.5px; }
.module-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.module-tags li {
    font-size: 12.5px; font-weight: 700; color: var(--violet); background: var(--dawn-soft);
    padding: 5px 12px; border-radius: 999px;
}

/* ---------- 适用对象 手风琴 ---------- */
.audience-sec { background: var(--surface-soft); }
.audience { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.audience-item {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow .25s var(--ease), border-color .25s;
}
.audience-item.is-open { box-shadow: var(--shadow); border-color: rgba(124,58,237,.35); }
.audience-head {
    width: 100%; display: flex; align-items: center; gap: 16px; padding: 22px 24px;
    background: none; border: 0; cursor: pointer; text-align: left; font: inherit; color: var(--ink);
}
.audience-no {
    font-size: 14px; font-weight: 800; color: var(--violet);
    background: var(--dawn-soft); width: 40px; height: 40px; border-radius: 12px;
    display: grid; place-items: center; flex: none;
}
.audience-name { font-size: 19px; font-weight: 800; }
.audience-tag {
    margin-left: 10px; font-size: 12.5px; font-weight: 700; color: var(--muted);
    background: var(--bg-2); padding: 4px 11px; border-radius: 999px;
}
.audience-arrow {
    margin-left: auto; width: 12px; height: 12px; flex: none; position: relative;
    transition: transform .3s var(--ease);
}
.audience-arrow::before, .audience-arrow::after {
    content: ""; position: absolute; top: 50%; width: 9px; height: 2.2px; background: var(--violet); border-radius: 2px;
}
.audience-arrow::before { left: -1px; transform: rotate(45deg); }
.audience-arrow::after { right: -1px; transform: rotate(-45deg); }
.audience-item.is-open .audience-arrow { transform: rotate(180deg); }

/* JS 模式下用 max-height 折叠 */
.audience-body { overflow: hidden; transition: max-height .35s var(--ease); }
.audience-body-in { padding: 0 24px 26px 80px; }
.audience-body-in p { color: var(--ink-soft); font-size: 15.5px; }
.audience-values { margin-top: 16px; display: grid; gap: 10px; }
.audience-values li {
    position: relative; padding-left: 26px; font-size: 14.5px; color: var(--ink-soft);
}
.audience-values li::before {
    content: ""; position: absolute; left: 0; top: 7px; width: 14px; height: 14px;
    border-radius: 50%; background: var(--dawn);
}
.audience-values li::after {
    content: ""; position: absolute; left: 4px; top: 11px; width: 5px; height: 2.5px;
    border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg);
}

/* 无 JS 兜底：默认全部展开可读 */
.no-js .audience-body { max-height: none !important; }
.no-js .audience-arrow { display: none; }

/* ---------- 学习成效统计横幅 ---------- */
.stat-sec { padding: 0; }
.stat-band {
    background: var(--dawn); border-radius: var(--radius-lg);
    padding: 46px 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
    box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.stat-band::after {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(circle at 80% -20%, rgba(255,255,255,.25), transparent 50%);
    pointer-events: none;
}
.stat { text-align: center; color: #fff; position: relative; }
.stat + .stat::before {
    content: ""; position: absolute; left: -14px; top: 14%; height: 72%; width: 1px;
    background: rgba(255,255,255,.28);
}
.stat-num { display: block; font-size: clamp(30px, 4vw, 44px); font-weight: 800; line-height: 1; }
.stat-label { display: block; margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.9); }

/* ---------- 教学闭环 ---------- */
.loop-sec { background: linear-gradient(180deg, var(--surface-soft), var(--bg)); }
.path {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px;
    position: relative; counter-reset: step;
}
.path::before {
    content: ""; position: absolute; top: 28px; left: 8%; right: 8%; height: 2px;
    background: linear-gradient(90deg, var(--indigo), var(--violet), var(--amber));
    border-radius: 2px; z-index: 0;
}
.path-step {
    position: relative; z-index: 1; text-align: center; background: var(--surface);
    border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px 22px;
    box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.path-step:nth-child(odd) { transform: translateY(-14px); }
.path-step:hover { transform: translateY(-20px); box-shadow: var(--shadow); }
.path-step:nth-child(even):hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.path-dot {
    width: 46px; height: 46px; margin: -42px auto 14px; border-radius: 50%;
    background: var(--dawn); color: #fff; font-weight: 800; font-size: 18px;
    display: grid; place-items: center; box-shadow: 0 10px 22px rgba(79,70,229,.30);
    border: 3px solid var(--surface);
}
.path-step h3 { font-size: 17px; margin-bottom: 8px; }
.path-step p { font-size: 13.5px; color: var(--muted); }

/* ---------- 内容师资保障 ---------- */
.assure-sec { background: var(--bg); }
.assure-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.assure {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 28px 24px; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.assure:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.assure-icon {
    width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center;
    color: var(--violet); background: var(--dawn-soft); margin-bottom: 16px;
}
.assure h3 { font-size: 17px; margin-bottom: 9px; }
.assure p { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 关于煦宇 ---------- */
.about-sec { background: linear-gradient(180deg, var(--bg), var(--surface-soft)); }
.about-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.about-copy .sec-kicker { margin-bottom: 16px; }
.about-copy .sec-title { text-align: left; }
.about-copy p { margin-top: 18px; color: var(--ink-soft); font-size: 16px; }
.about-points { margin-top: 26px; display: grid; gap: 14px; }
.about-points li {
    padding-left: 16px; position: relative; color: var(--ink-soft); font-size: 15px;
}
.about-points li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--dawn); }
.about-points span { display: inline-block; font-weight: 800; color: var(--ink); margin-right: 8px; }

.about-side { display: grid; gap: 20px; }
.about-quote {
    background: var(--dawn); color: #fff; border-radius: var(--radius-lg); padding: 30px;
    box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.about-quote::before {
    content: "“"; position: absolute; top: -10px; left: 16px; font-size: 90px; opacity: .25; font-family: Georgia, serif;
}
.about-quote p { font-size: 19px; font-weight: 700; line-height: 1.5; position: relative; }
.about-quote span { display: block; margin-top: 16px; font-size: 13px; opacity: .85; }
.about-mini { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.about-mini div {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
    padding: 16px 12px; text-align: center; box-shadow: var(--shadow-sm);
}
.about-mini strong { display: block; font-size: 22px; color: var(--violet); }
.about-mini span { font-size: 12.5px; color: var(--muted); }

/* ---------- 联系我们 ---------- */
.contact-sec { background: var(--surface-soft); }
.contact-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.contact-copy .sec-kicker { margin-bottom: 16px; }
.contact-copy .sec-title { text-align: left; }
.contact-copy p { margin-top: 18px; color: var(--ink-soft); font-size: 16px; }
.contact-list { display: grid; gap: 14px; }
.contact-list li {
    display: flex; align-items: flex-start; gap: 16px; background: var(--surface);
    border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-sm);
    transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.contact-list li:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.contact-ico {
    width: 44px; height: 44px; border-radius: 12px; flex: none; display: grid; place-items: center;
    color: #fff; background: linear-gradient(135deg, var(--indigo), var(--violet));
}
.contact-k { display: block; font-size: 13px; color: var(--muted); font-weight: 700; }
.contact-v { display: block; font-size: 15.5px; color: var(--ink); font-weight: 600; word-break: break-word; }
a.contact-v:hover { color: var(--violet); }

/* ---------- 页脚 ---------- */
.foot { background: #1a1733; color: #cfcae8; padding: 0; }
.foot-top {
    display: grid; grid-template-columns: 1.3fr 2fr; gap: 48px; padding: 60px 0 44px;
}
.logo-foot .logo-text { color: #fff; }
.logo-foot .logo-text i { color: var(--amber); }
.foot-tag { margin-top: 16px; font-size: 14px; color: #9b95c2; max-width: 320px; }
.foot-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.foot-col h4 { font-size: 14px; color: #fff; margin-bottom: 14px; letter-spacing: .04em; }
.foot-col a { display: block; font-size: 14px; color: #a9a3cd; padding: 5px 0; transition: color .2s; }
.foot-col a:hover { color: var(--amber); }
.foot-bottom {
    border-top: 1px solid rgba(255,255,255,.10); padding: 22px 0 28px;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    font-size: 13.5px; color: #8b85b3;
}
.foot-bottom a { color: #a9a3cd; }
.foot-bottom a:hover { color: var(--amber); text-decoration: underline; }

/* ---------- 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 980px) {
    section { padding: 66px 0; }
    .topnav, .topbar-cta { display: none; }
    .burger { display: flex; }

    .lead-inner { grid-template-columns: 1fr; gap: 40px; }
    .lead-board { max-width: 460px; margin: 0 auto; }

    .module-grid { grid-template-columns: 1fr; }
    .assure-grid { grid-template-columns: 1fr 1fr; }

    .stat-band { grid-template-columns: 1fr 1fr; gap: 30px 20px; padding: 38px 28px; }
    .stat + .stat::before { display: none; }
    .stat:nth-child(2)::before { display: block; }

    .path { grid-template-columns: 1fr 1fr; gap: 30px 18px; }
    .path::before { display: none; }
    .path-step:nth-child(odd), .path-step:nth-child(even) { transform: none; }
    .path-dot { margin-top: 8px; }

    .about-inner, .contact-inner { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 560px) {
    .shell { width: calc(100% - 32px); }
    section { padding: 56px 0; }
    .lead { padding: 48px 0 64px; }
    .lead-trust { gap: 22px; }
    .sec-head { margin-bottom: 38px; }

    .assure-grid { grid-template-columns: 1fr; }
    .path { grid-template-columns: 1fr; }
    .about-mini { grid-template-columns: repeat(3, 1fr); }

    .audience-head { padding: 18px; gap: 12px; flex-wrap: wrap; }
    .audience-tag { margin-left: 0; order: 4; flex-basis: 100%; width: fit-content; }
    .audience-body-in { padding: 0 18px 22px; }

    .lead-board { min-height: 420px; }
    .board-card { width: 210px; }
    .board-card-a { left: -6px; }
    .board-card-b { right: -6px; }
}