@charset "utf-8";
/* ==========================================================================
   淄博建陟轻质碳酸钙 · 站点样式
   设计语言：洁净工业风 —— 深青蓝主色 + 松石青点缀 + 大留白
   说明：不依赖任何外部 CDN，全部样式在本文件内实现（图标使用内联 SVG）
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
    --ink-900: #072a41;
    --ink-800: #0b3a58;
    --ink-700: #12506f;
    --ink-600: #1a6488;
    --ink-500: #2a7c9f;
    --teal-700: #0a7d79;
    --teal-600: #0e8f8b;
    --teal-500: #12a8a2;
    --teal-100: #d8efee;
    --teal-50: #eef8f7;
    --paper: #ffffff;
    --mist: #f4f7f8;
    --mist-2: #eaf0f2;
    --line: #e1eaee;
    --line-2: #d3dfe5;
    --text: #1b2a34;
    --text-2: #3c5361;
    --muted: #5e7280;
    --amber: #b87514;
    --radius-s: 3px;
    --radius: 6px;
    --radius-l: 10px;
    --shadow-s: 0 1px 2px rgba(7, 42, 65, .05);
    --shadow: 0 8px 28px rgba(7, 42, 65, .08);
    --shadow-l: 0 18px 48px rgba(7, 42, 65, .13);
    --wrap: 1240px;
    --header-h: 72px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
        "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif;
}

/* ---------- 2. 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.95;
    color: var(--text);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
}

img,
svg { max-width: 100%; vertical-align: middle; border: 0; }

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease;
}

a:hover { color: var(--teal-600); }

h1, h2, h3, h4, h5 {
    margin: 0;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.01em;
    color: var(--ink-900);
}

p { margin: 0 0 1em; }

ul, ol { margin: 0; padding: 0; list-style: none; }

table { border-collapse: collapse; width: 100%; }

input, button, select, textarea { font-family: inherit; font-size: inherit; }

/* ---------- 3. 通用布局 ---------- */
.qg-wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 20px;
}

.qg-main { display: block; }

.qg-section { padding: 78px 0; }
.qg-section--mist { background: var(--mist); }
.qg-section--ink {
    background: linear-gradient(160deg, var(--ink-900) 0%, var(--ink-700) 100%);
    color: #cfe2ec;
}
.qg-section--tight { padding: 56px 0; }

.qg-sec-head { margin-bottom: 40px; }
.qg-sec-head--center { text-align: center; }

.qg-sec-eyebrow {
    display: inline-block;
    font-size: 13px;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--teal-600);
    font-weight: 700;
    margin-bottom: 12px;
}

.qg-section--ink .qg-sec-eyebrow { color: var(--teal-500); }

.qg-sec-title {
    position: relative;
    font-size: 34px;
    line-height: 1.3;
    padding-left: 20px;
    margin-bottom: 14px;
}

.qg-sec-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: .18em;
    bottom: .18em;
    width: 5px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--teal-500), var(--ink-600));
}

.qg-sec-head--center .qg-sec-title { padding-left: 0; }
.qg-sec-head--center .qg-sec-title::before { display: none; }

.qg-sec-desc {
    font-size: 16.5px;
    color: var(--muted);
    max-width: 780px;
    margin: 0;
}

.qg-sec-head--center .qg-sec-desc { margin: 0 auto; }

.qg-section--ink .qg-sec-title { color: #fff; }
.qg-section--ink .qg-sec-desc { color: #a9c6d6; }

.qg-sec-foot { margin-top: 40px; text-align: center; }

/* ---------- 4. 按钮 ---------- */
.qg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 26px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all .22s ease;
    white-space: nowrap;
}

.qg-btn--primary {
    background: var(--teal-600);
    color: #fff;
    box-shadow: 0 6px 18px rgba(14, 143, 139, .28);
}

.qg-btn--primary:hover {
    background: var(--teal-700);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(14, 143, 139, .34);
}

.qg-btn--ink {
    background: var(--ink-800);
    color: #fff;
}

.qg-btn--ink:hover { background: var(--ink-700); color: #fff; }

.qg-btn--ghost {
    background: rgba(255, 255, 255, .95);
    color: var(--ink-900);
    border-color: rgba(255, 255, 255, .95);
}

.qg-btn--ghost:hover {
    background: #fff;
    border-color: #fff;
    color: var(--teal-700);
}

.qg-btn--line {
    background: #fff;
    color: var(--ink-800);
    border-color: var(--line-2);
}

.qg-btn--line:hover {
    border-color: var(--teal-600);
    color: var(--teal-700);
}

.qg-btn--sm { height: 38px; padding: 0 16px; font-size: 14.5px; }
.qg-btn--block { width: 100%; }

/* ---------- 5. 顶部信息条 ---------- */
.qg-topbar {
    background: var(--ink-900);
    color: #9fc0d2;
    font-size: 14px;
    line-height: 40px;
}

.qg-topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.qg-topbar__left { display: flex; align-items: center; gap: 20px; }

.qg-topbar__tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qg-topbar__tag svg { width: 14px; height: 14px; fill: var(--teal-500); }

.qg-topbar a { color: #cfe2ec; }
.qg-topbar a:hover { color: #fff; }

.qg-topbar__right { display: flex; align-items: center; gap: 22px; }

.qg-topbar__tel {
    color: #fff;
    font-weight: 700;
    font-size: 15.5px;
}

/* ---------- 6. 站点头部 / 导航 ---------- */
.qg-header {
    position: sticky;
    top: 0;
    z-index: 90;
    background: #fff;
    border-bottom: 1px solid var(--line);
    transition: box-shadow .25s ease;
}

.qg-header.is-stuck { box-shadow: 0 6px 24px rgba(7, 42, 65, .09); }

.qg-header__inner {
    display: flex;
    align-items: center;
    gap: 26px;
    height: var(--header-h);
}

/* 文字 Logo */
.qg-logo {
    display: flex;
    align-items: center;
    gap: 11px;
    flex-shrink: 0;
}

.qg-logo__mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius);
    background: linear-gradient(150deg, var(--ink-700), var(--teal-600));
    color: #fff;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: .02em;
}

.qg-logo__text { display: flex; flex-direction: column; line-height: 1.2; }

.qg-logo__cn {
    font-size: 21px;
    font-weight: 700;
    color: var(--ink-900);
    letter-spacing: .01em;
}

.qg-logo__en {
    font-size: 11px;
    letter-spacing: .17em;
    color: var(--muted);
    text-transform: uppercase;
}

.qg-logo img { height: 46px; width: auto; }

.qg-nav { flex: 1 1 auto; }

.qg-nav__list {
    display: flex;
    align-items: center;
    gap: 2px;
}

.qg-nav__list > li { position: relative; }

.qg-nav__list > li > a {
    display: block;
    padding: 0 13px;
    height: var(--header-h);
    line-height: var(--header-h);
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-800);
    white-space: nowrap;
}

.qg-nav__list > li > a::after {
    content: "";
    position: absolute;
    left: 13px;
    right: 13px;
    bottom: 0;
    height: 3px;
    background: var(--teal-600);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .22s ease;
}

.qg-nav__list > li:hover > a,
.qg-nav__list > li.is-active > a { color: var(--teal-700); }

.qg-nav__list > li:hover > a::after,
.qg-nav__list > li.is-active > a::after { transform: scaleX(1); }

/* 下拉 */
.qg-drop {
    position: absolute;
    left: 0;
    top: 100%;
    min-width: 218px;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all .2s ease;
}

.qg-nav__list > li:hover .qg-drop {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.qg-drop a {
    display: block;
    padding: 10px 14px;
    font-size: 15.5px;
    color: var(--text-2);
    border-radius: var(--radius-s);
    transition: all .16s ease;
}

.qg-drop a:hover {
    background: var(--teal-50);
    color: var(--teal-700);
    padding-left: 19px;
}

.qg-header__side {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.qg-hdsearch {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-hdsearch__toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s ease;
}

.qg-hdsearch__toggle svg { width: 19px; height: 19px; fill: var(--ink-700); }
.qg-hdsearch__toggle:hover { border-color: var(--teal-600); }
.qg-hdsearch__toggle:hover svg,
.qg-hdsearch.is-open .qg-hdsearch__toggle svg { fill: var(--teal-700); }
.qg-hdsearch.is-open .qg-hdsearch__toggle { border-color: var(--teal-600); background: var(--teal-50); }

.qg-hdsearch__panel {
    position: absolute;
    right: 0;
    top: calc(100% + 12px);
    z-index: 30;
    display: flex;
    gap: 8px;
    width: 420px;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: all .2s ease;
}

.qg-hdsearch.is-open .qg-hdsearch__panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.qg-hdsearch__panel input[type="text"] {
    flex: 1 1 auto;
    min-width: 0;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    outline: none;
    font-size: 15.5px;
    color: var(--text);
}

.qg-hdsearch__panel input[type="text"]:focus { border-color: var(--teal-500); }
.qg-hdsearch__panel input::placeholder { color: #93a6b1; }

.qg-hdsearch__panel button[type="submit"] {
    flex: 0 0 auto;
    height: 44px;
    padding: 0 20px;
    border: 0;
    border-radius: var(--radius-s);
    background: var(--teal-600);
    color: #fff;
    font-size: 15.5px;
    font-weight: 600;
    cursor: pointer;
}

.qg-hdsearch__panel button[type="submit"]:hover { background: var(--teal-700); }

.qg-hdtel {
    display: flex;
    align-items: center;
    gap: 9px;
    padding-left: 14px;
    border-left: 1px solid var(--line);
    height: 40px;
}

.qg-hdtel svg { width: 21px; height: 21px; fill: var(--teal-600); }

.qg-hdtel span { display: block; font-size: 11.5px; color: var(--muted); line-height: 1.3; }
.qg-hdtel strong { display: block; font-size: 17px; color: var(--ink-900); line-height: 1.3; }

/* 汉堡按钮（桌面隐藏） */
.qg-burger {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.qg-burger svg { width: 22px; height: 22px; fill: var(--ink-800); }

/* 移动抽屉 */
.qg-drawer {
    position: fixed;
    inset: 0 0 0 auto;
    width: 86%;
    max-width: 360px;
    background: #fff;
    z-index: 200;
    transform: translateX(100%);
    transition: transform .28s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.qg-drawer.is-open { transform: translateX(0); }

.qg-drawer__hd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 2;
}

.qg-drawer__close {
    width: 38px;
    height: 38px;
    border: 0;
    background: var(--mist);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-drawer__close svg { width: 18px; height: 18px; fill: var(--ink-800); }

.qg-drawer__nav { padding: 8px 0 24px; }

.qg-drawer__nav > li { border-bottom: 1px solid var(--line); }

.qg-drawer__nav > li > a,
.qg-drawer__nav > li > .qg-drawer__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 18px;
    font-size: 17px;
    font-weight: 600;
    color: var(--ink-800);
}

.qg-drawer__sub { display: none; background: var(--mist); padding: 6px 0; }
.qg-drawer__sub.is-open { display: block; }

.qg-drawer__sub a {
    display: block;
    padding: 11px 30px;
    font-size: 15.5px;
    color: var(--text-2);
}

.qg-drawer__caret {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--mist);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.qg-drawer__caret svg { width: 13px; height: 13px; fill: var(--ink-700); transition: transform .2s; }
.qg-drawer__row.is-open .qg-drawer__caret svg { transform: rotate(180deg); }

.qg-drawer__contact {
    margin-top: auto;
    padding: 20px 18px 30px;
    background: var(--mist);
    font-size: 15px;
    color: var(--text-2);
}

.qg-drawer__contact strong { color: var(--ink-900); font-size: 19px; display: block; margin-bottom: 4px; }

.qg-mask {
    position: fixed;
    inset: 0;
    background: rgba(7, 42, 65, .48);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: all .25s ease;
}

.qg-mask.is-open { opacity: 1; visibility: visible; }

/* ---------- 7. 内页 Banner ---------- */
.qg-banner {
    position: relative;
    background: linear-gradient(120deg, var(--ink-900) 0%, var(--ink-700) 62%, var(--ink-600) 100%);
    color: #fff;
    padding: 62px 0 56px;
    overflow: hidden;
}

.qg-banner::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -60px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(18, 168, 162, .30) 0%, rgba(18, 168, 162, 0) 68%);
    pointer-events: none;
}

.qg-banner__crumb {
    position: relative;
    z-index: 1;
    font-size: 14.5px;
    color: #9dc0d3;
    margin-bottom: 14px;
}

.qg-banner__crumb a { color: #9dc0d3; }
.qg-banner__crumb a:hover { color: #fff; }
.qg-banner__crumb span.sep { margin: 0 7px; opacity: .55; }

.qg-banner__title {
    position: relative;
    z-index: 1;
    font-size: 38px;
    color: #fff;
    margin-bottom: 12px;
}

.qg-banner__desc {
    position: relative;
    z-index: 1;
    font-size: 16.5px;
    color: #b6cdda;
    max-width: 900px;
    margin: 0;
    line-height: 1.85;
}

.qg-banner--slim { padding: 46px 0 40px; }
.qg-banner--slim .qg-banner__title { font-size: 32px; }

/* ---------- 8. 首屏 Hero ---------- */
.qg-hero {
    position: relative;
    color: #fff;
    background: linear-gradient(135deg, var(--ink-900) 0%, #0a3c5e 52%, #12506f 100%);
    overflow: hidden;
}

.qg-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 82% 18%, rgba(18, 168, 162, .30), transparent 46%),
        radial-gradient(circle at 12% 88%, rgba(26, 100, 136, .55), transparent 52%);
    pointer-events: none;
}

.qg-hero__grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 68px 68px;
    mask-image: linear-gradient(90deg, transparent 0, #000 42%, #000 100%);
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 42%, #000 100%);
    pointer-events: none;
}

.qg-hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 56px;
    align-items: center;
    padding: 84px 0 78px;
}

.qg-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7px 15px;
    border: 1px solid rgba(18, 168, 162, .45);
    background: rgba(18, 168, 162, .14);
    border-radius: 999px;
    font-size: 14px;
    color: #7fe3dd;
    margin-bottom: 22px;
}

.qg-hero__badge i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--teal-500);
    box-shadow: 0 0 0 4px rgba(18, 168, 162, .22);
}

.qg-hero h1 {
    font-size: 46px;
    line-height: 1.28;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: -.015em;
}

.qg-hero h1 em {
    font-style: normal;
    color: #6ee0d9;
}

.qg-hero__lead {
    font-size: 18px;
    line-height: 1.9;
    color: #bed6e3;
    max-width: 640px;
    margin-bottom: 30px;
}

.qg-hero__btns { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }

.qg-hero__metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: var(--radius);
    overflow: hidden;
}

.qg-hero__metric {
    background: rgba(9, 48, 72, .62);
    padding: 16px 14px;
}

.qg-hero__metric b {
    display: block;
    font-size: 27px;
    line-height: 1.2;
    color: #fff;
    font-weight: 700;
}

.qg-hero__metric b small { font-size: 14px; font-weight: 600; margin-left: 2px; }

.qg-hero__metric span {
    display: block;
    margin-top: 5px;
    font-size: 13.5px;
    color: #9dc0d3;
    line-height: 1.5;
}

/* Hero 右侧规格卡 */
.qg-card-spec {
    background: rgba(255, 255, 255, .97);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-l);
    overflow: hidden;
}

.qg-card-spec__hd {
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--line);
}

.qg-card-spec__hd h2 {
    font-size: 20px;
    margin-bottom: 4px;
}

.qg-card-spec__hd p {
    margin: 0;
    font-size: 14px;
    color: var(--muted);
}

.qg-card-spec__body { padding: 8px 24px 20px; }

.qg-card-spec__row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 15.5px;
}

.qg-card-spec__row:last-child { border-bottom: 0; }
.qg-card-spec__row span { color: var(--muted); flex-shrink: 0; }
.qg-card-spec__row b { color: var(--ink-900); text-align: right; font-weight: 700; }

.qg-card-spec__ft {
    padding: 16px 24px 22px;
    background: var(--mist);
}

/* ---------- 9. 卡片通用 ---------- */
.qg-grid { display: grid; gap: 22px; }
.qg-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.qg-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.qg-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.qg-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .26s ease;
}

.qg-card:hover {
    border-color: var(--teal-500);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}

.qg-card__body { padding: 22px 24px 24px; flex: 1 1 auto; }

.qg-card__title {
    font-size: 19px;
    margin-bottom: 10px;
    line-height: 1.45;
}

.qg-card__title a { color: var(--ink-900); }
.qg-card:hover .qg-card__title a { color: var(--teal-700); }

.qg-card__desc {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.85;
    margin: 0;
}

.qg-card__more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--teal-700);
}

.qg-card__more svg { width: 14px; height: 14px; fill: currentColor; }

.qg-card__media {
    position: relative;
    aspect-ratio: 4 / 3;
    background: linear-gradient(150deg, var(--mist) 0%, var(--mist-2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.qg-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.qg-card:hover .qg-card__media img { transform: scale(1.05); }

.qg-card__media span.ph {
    font-size: 15px;
    color: #9fb2bd;
    letter-spacing: .12em;
}

.qg-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 14px;
}

.qg-tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--ink-700);
    background: var(--teal-50);
    border: 1px solid var(--teal-100);
    border-radius: var(--radius-s);
}

a.qg-tag:hover { background: var(--teal-600); color: #fff; border-color: var(--teal-600); }

/* 产品卡（带规格角标） */
.qg-pro-card { text-align: left; }

.qg-pro-card__badge {
    position: absolute;
    left: 0;
    top: 16px;
    z-index: 2;
    padding: 4px 13px 4px 12px;
    background: var(--ink-800);
    color: #fff;
    font-size: 13px;
    border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

.qg-pro-card__specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 14px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px dashed var(--line);
    font-size: 14px;
    color: var(--muted);
}

.qg-pro-card__specs b { color: var(--ink-800); }

/* ---------- 10. 优势块 ---------- */
.qg-adv {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.qg-adv__item {
    padding: 34px 26px;
    border-right: 1px solid var(--line);
    transition: background .25s ease;
}

.qg-adv__item:last-child { border-right: 0; }
.qg-adv__item:hover { background: var(--teal-50); }

.qg-adv__ico {
    width: 50px;
    height: 50px;
    border-radius: var(--radius);
    background: linear-gradient(150deg, var(--ink-800), var(--teal-600));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.qg-adv__ico svg { width: 25px; height: 25px; fill: #fff; }

.qg-adv__item h3 { font-size: 18px; margin-bottom: 9px; }
.qg-adv__item p { font-size: 15px; color: var(--muted); line-height: 1.8; margin: 0; }

/* ---------- 11. 应用领域 ---------- */
.qg-app {
    display: block;
    padding: 26px 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: all .25s ease;
}

.qg-app:hover {
    border-color: transparent;
    background: linear-gradient(155deg, var(--ink-800), var(--ink-600));
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.qg-app h3 { font-size: 18.5px; margin-bottom: 9px; transition: color .25s; }
.qg-app p { font-size: 14.8px; color: var(--muted); line-height: 1.8; margin: 0; transition: color .25s; }
.qg-app:hover h3 { color: #fff; }
.qg-app:hover p { color: #b8d3e1; }

.qg-app__num {
    display: block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .16em;
    color: var(--teal-600);
    margin-bottom: 10px;
}

.qg-app:hover .qg-app__num { color: #6ee0d9; }

/* ---------- 12. 关于/数据 ---------- */
.qg-about {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 56px;
    align-items: center;
}

.qg-about__rich {
    font-size: 16.5px;
    line-height: 2;
    color: var(--text-2);
}

.qg-about__rich p { margin-bottom: 1.1em; }

.qg-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.qg-fact {
    padding: 24px 22px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    border-left: 4px solid var(--teal-600);
}

.qg-fact b {
    display: block;
    font-size: 30px;
    line-height: 1.15;
    color: var(--ink-900);
    font-weight: 700;
}

.qg-fact b small { font-size: 15px; margin-left: 3px; font-weight: 600; }
.qg-fact span { display: block; margin-top: 7px; font-size: 14.5px; color: var(--muted); }

/* ---------- 13. 列表页 ---------- */
.qg-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 40px;
    align-items: start;
    padding: 56px 0 78px;
}

.qg-layout--full { grid-template-columns: minmax(0, 1fr); }

.qg-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 26px;
}

.qg-panel__hd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--line);
}

.qg-panel__hd h2 {
    position: relative;
    font-size: 19px;
    padding-left: 14px;
}

.qg-panel__hd h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: .16em;
    bottom: .16em;
    width: 4px;
    border-radius: 2px;
    background: var(--teal-600);
}

.qg-panel__hd a.more { font-size: 14px; color: var(--muted); }
.qg-panel__hd a.more:hover { color: var(--teal-700); }

.qg-panel__body { padding: 8px 24px 22px; }

/* 列表条目 */
.qg-item {
    display: flex;
    gap: 22px;
    padding: 24px 0;
    border-bottom: 1px solid var(--line);
}

.qg-item:last-child { border-bottom: 0; }

.qg-item__thumb {
    flex: 0 0 190px;
    width: 190px;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-s);
    overflow: hidden;
    background: linear-gradient(150deg, var(--mist), var(--mist-2));
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-item__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.qg-item:hover .qg-item__thumb img { transform: scale(1.04); }
.qg-item__thumb span { font-size: 13px; color: #9fb2bd; letter-spacing: .1em; }

.qg-item__body { flex: 1 1 auto; min-width: 0; }

.qg-item__title {
    font-size: 19.5px;
    line-height: 1.5;
    margin-bottom: 9px;
}

.qg-item__title a { color: var(--ink-900); }
.qg-item:hover .qg-item__title a { color: var(--teal-700); }

.qg-item__desc {
    font-size: 15.2px;
    color: var(--muted);
    line-height: 1.85;
    margin: 0 0 12px;
}

.qg-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px 16px;
    font-size: 13.8px;
    color: #869aa6;
}

.qg-meta svg { width: 14px; height: 14px; fill: #a9bcc6; margin-right: 5px; }
.qg-meta > span { display: inline-flex; align-items: center; }

/* 侧栏 */
.qg-side-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 24px;
}

.qg-side-card__hd {
    padding: 15px 20px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(100deg, var(--ink-900), var(--ink-700));
    color: #fff;
    font-size: 17px;
    font-weight: 700;
}

.qg-side-card__body { padding: 6px 20px 16px; }

.qg-side-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 2px;
    border-bottom: 1px dashed var(--line);
    font-size: 15.5px;
    color: var(--text-2);
}

.qg-side-nav li:last-child a { border-bottom: 0; }

.qg-side-nav a::after {
    content: "";
    width: 6px;
    height: 6px;
    border-top: 1.6px solid #b3c4cd;
    border-right: 1.6px solid #b3c4cd;
    transform: rotate(45deg);
    transition: all .2s;
    flex-shrink: 0;
}

.qg-side-nav a:hover { color: var(--teal-700); }
.qg-side-nav a:hover::after { border-color: var(--teal-600); transform: rotate(45deg) translate(2px, -2px); }
.qg-side-nav a.is-active { color: var(--teal-700); font-weight: 700; }

.qg-side-rank li { border-bottom: 1px dashed var(--line); }
.qg-side-rank li:last-child { border-bottom: 0; }

.qg-side-rank a {
    display: flex;
    gap: 11px;
    align-items: flex-start;
    padding: 13px 0;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-2);
}

.qg-side-rank a:hover { color: var(--teal-700); }

.qg-side-rank i {
    flex: 0 0 21px;
    height: 21px;
    margin-top: 2px;
    border-radius: var(--radius-s);
    background: var(--mist-2);
    color: #7c909b;
    font-size: 12.5px;
    font-style: normal;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-side-rank li:nth-child(1) i { background: var(--ink-800); color: #fff; }
.qg-side-rank li:nth-child(2) i { background: var(--teal-600); color: #fff; }
.qg-side-rank li:nth-child(3) i { background: var(--teal-500); color: #fff; }

.qg-side-cta {
    padding: 26px 22px;
    background: linear-gradient(160deg, var(--ink-900), var(--ink-700));
    color: #b8d3e1;
    text-align: center;
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.qg-side-cta h3 { color: #fff; font-size: 20px; margin-bottom: 8px; }
.qg-side-cta p { font-size: 14.5px; line-height: 1.8; margin-bottom: 18px; }
.qg-side-cta .qg-telbig {
    display: block;
    font-size: 25px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: .01em;
}

.qg-side-pro {
    display: flex;
    gap: 13px;
    align-items: center;
    padding: 13px 0;
    border-bottom: 1px dashed var(--line);
}

.qg-side-pro:last-child { border-bottom: 0; }

.qg-side-pro__img {
    flex: 0 0 76px;
    width: 76px;
    height: 62px;
    border-radius: var(--radius-s);
    overflow: hidden;
    background: var(--mist-2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-side-pro__img img { width: 100%; height: 100%; object-fit: cover; }
.qg-side-pro__img span { font-size: 11px; color: #9fb2bd; }

.qg-side-pro a { font-size: 15px; line-height: 1.6; color: var(--text-2); display: block; }
.qg-side-pro a:hover { color: var(--teal-700); }
.qg-side-pro em { display: block; font-size: 13px; color: #93a6b1; font-style: normal; margin-top: 3px; }

/* ---------- 14. 分页 ---------- */
.qg-pager {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    padding: 34px 0 6px;
}

.qg-pager a,
.qg-pager span {
    min-width: 40px;
    height: 40px;
    padding: 0 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    font-size: 15px;
    color: var(--text-2);
    background: #fff;
}

.qg-pager a:hover { border-color: var(--teal-600); color: var(--teal-700); }
.qg-pager span.is-current,
.qg-pager .active { background: var(--teal-600); border-color: var(--teal-600); color: #fff; }

/* 讯睿自带分页容器内的链接 */
.xrpagination,
.qg-pager-wrap { display: block; }

.qg-pager-wrap a,
.qg-pager-wrap span,
.xrpagination a,
.xrpagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 13px;
    margin: 4px 4px 0 0;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    font-size: 15px;
    color: var(--text-2);
    background: #fff;
}

.xrpagination a:hover,
.qg-pager-wrap a:hover { border-color: var(--teal-600); color: var(--teal-700); }

/* 讯睿分页为 ul/li 结构，需要单独排版 */
.xrpagination ul,
.qg-pager-wrap ul,
ul.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 30px 0 6px;
    list-style: none;
}

.xrpagination li,
.qg-pager-wrap li,
ul.pagination li { list-style: none; }

.xrpagination li > a,
.xrpagination li > span,
.qg-pager-wrap li > a,
.qg-pager-wrap li > span,
ul.pagination li > a,
ul.pagination li > span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 13px;
    margin: 0;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    font-size: 15px;
    color: var(--text-2);
    background: #fff;
}

.xrpagination li > a:hover,
.qg-pager-wrap li > a:hover,
ul.pagination li > a:hover {
    border-color: var(--teal-600);
    color: var(--teal-700);
}

.xrpagination li.active > a,
.xrpagination li.active > span,
.qg-pager-wrap li.active > a,
ul.pagination li.active > a,
ul.pagination li.active > span {
    background: var(--teal-600);
    border-color: var(--teal-600);
    color: #fff;
}

/* ---------- 15. 正文排版 ---------- */
.qg-article {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 44px 52px 48px;
}

.qg-article__title {
    font-size: 33px;
    line-height: 1.4;
    margin-bottom: 18px;
}

.qg-article__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    padding-bottom: 22px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--line);
    font-size: 14.5px;
    color: var(--muted);
}

.qg-article__meta svg { width: 15px; height: 15px; fill: #a9bcc6; margin-right: 6px; }
.qg-article__meta span { display: inline-flex; align-items: center; }

.qg-rich {
    font-size: 17px;
    line-height: 2.05;
    color: #24333d;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.qg-rich > *:first-child { margin-top: 0; }

.qg-rich p { margin: 0 0 1.15em; }

.qg-rich h2 {
    position: relative;
    font-size: 23px;
    margin: 1.9em 0 .85em;
    padding-left: 15px;
}

.qg-rich h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: .18em;
    bottom: .18em;
    width: 5px;
    border-radius: 3px;
    background: var(--teal-600);
}

.qg-rich h3 { font-size: 19.5px; margin: 1.6em 0 .7em; color: var(--ink-700); }
.qg-rich h4 { font-size: 17.5px; margin: 1.4em 0 .6em; }

.qg-rich a { color: var(--teal-700); text-decoration: underline; text-underline-offset: 3px; }
.qg-rich a:hover { color: var(--ink-700); }

.qg-rich ul,
.qg-rich ol { margin: 0 0 1.2em; padding-left: 1.45em; }
.qg-rich ul { list-style: disc; }
.qg-rich ol { list-style: decimal; }
.qg-rich li { margin-bottom: .5em; }

.qg-rich img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.5em auto;
    border-radius: var(--radius-s);
}

.qg-rich blockquote {
    margin: 1.4em 0;
    padding: 16px 22px;
    background: var(--teal-50);
    border-left: 4px solid var(--teal-500);
    color: var(--text-2);
    border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

.qg-rich blockquote p:last-child { margin-bottom: 0; }

.qg-rich table {
    width: 100%;
    margin: 1.6em 0;
    font-size: 15.5px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    overflow: hidden;
}

.qg-rich table th,
.qg-rich table td {
    padding: 12px 14px;
    border: 1px solid var(--line-2);
    text-align: left;
    line-height: 1.75;
    vertical-align: top;
}

.qg-rich table thead th,
.qg-rich table thead td,
.qg-rich table tbody tr:first-child th {
    background: var(--ink-800);
    color: #fff;
    font-weight: 700;
    border-color: var(--ink-800);
}

.qg-rich table tbody tr:nth-child(even) td { background: var(--mist); }

.qg-rich .conten_info_s,
.qg-rich span.conten_info_s { display: block; }

/* 参数列表（产品属性） */
.qg-rich ul.qg_attrs {
    list-style: none;
    padding: 0;
    margin: 0 0 1.6em;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-s);
    overflow: hidden;
}

.qg-rich ul.qg_attrs li {
    margin: 0;
    padding: 12px 16px;
    background: #fff;
    font-size: 15.5px;
    line-height: 1.75;
}

.qg-rich ul.qg_attrs li b { color: var(--ink-800); }

/* 文章底部 */
.qg-article__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 34px 0 0;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

/* 标签分层展示：相关主题 / 相关产品 / 所属栏目 */
.qg-tagbar {
    margin: 34px 0 0;
    padding: 6px 0 0;
    border-top: 1px solid var(--line);
}

.qg-tagbar__row {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--line);
}

.qg-tagbar__row:last-child { border-bottom: 0; }

.qg-tagbar__label {
    flex: 0 0 76px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ink-800);
    line-height: 2.1;
    position: relative;
    padding-left: 11px;
}

.qg-tagbar__label::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3px;
    border-radius: 2px;
    background: var(--teal-500);
}

.qg-tagbar__list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex: 1 1 auto;
}

.qg-tag.is-pro {
    color: var(--ink-700);
    background: #eef3f6;
    border-color: #dbe6ec;
}

.qg-tag.is-pro:hover {
    background: var(--ink-800);
    border-color: var(--ink-800);
    color: #fff;
}

.qg-tag.is-cat {
    color: var(--muted);
    background: #fff;
    border-color: var(--line-2);
}

.qg-tag.is-cat:hover {
    background: var(--mist);
    border-color: var(--teal-500);
    color: var(--teal-700);
}

.qg-article__pn {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 26px;
}

.qg-article__pn p {
    margin: 0;
    padding: 15px 18px;
    background: var(--mist);
    border-radius: var(--radius-s);
    font-size: 15px;
    color: var(--muted);
    line-height: 1.7;
}

.qg-article__pn strong { color: var(--ink-800); }
.qg-article__pn a { color: var(--text-2); }
.qg-article__pn a:hover { color: var(--teal-700); }

.qg-article__related { margin-top: 30px; }

.qg-article__related-hd {
    position: relative;
    font-size: 19px;
    padding-left: 14px;
    margin-bottom: 18px;
}

.qg-article__related-hd::before {
    content: "";
    position: absolute;
    left: 0;
    top: .16em;
    bottom: .16em;
    width: 4px;
    border-radius: 2px;
    background: var(--teal-600);
}

/* 文档内引用的 CTA */
.qg-inline-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin: 34px 0 0;
    padding: 24px 28px;
    background: linear-gradient(140deg, var(--ink-900), var(--ink-700));
    border-radius: var(--radius);
    color: #b8d3e1;
}

.qg-inline-cta h3 { color: #fff; font-size: 20px; margin-bottom: 6px; }
.qg-inline-cta p { margin: 0; font-size: 14.8px; }
.qg-inline-cta__btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 16. 产品详情 ---------- */

/* ---------- 15.1 按钮颜色优先级 ----------
   老文章正文存在未闭合标签，界面上某些按钮会被浏览器解析进 .qg-rich 里，
   从而被 `.qg-rich a` 的链接颜色覆盖。这里用更高优先级把按钮颜色固定下来。 */
a.qg-btn,
a.qg-btn:hover { text-decoration: none; }

a.qg-btn--primary,
a.qg-btn--primary:hover,
a.qg-btn--ink,
a.qg-btn--ink:hover { color: #fff; }

a.qg-btn--ghost,
a.qg-btn--ghost:hover { color: var(--ink-900); }

a.qg-btn--line,
a.qg-btn--line:hover { color: var(--ink-800); }

a.qg-tag,
a.qg-tag:hover { text-decoration: none; }

.qg-pro-head {
    display: grid;
    grid-template-columns: 420px minmax(0, 1fr);
    gap: 44px;
    padding: 42px 0 48px;
}

.qg-pro-head__img {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: linear-gradient(150deg, var(--mist), var(--mist-2));
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-pro-head__img img { width: 100%; height: 100%; object-fit: cover; }
.qg-pro-head__img span { color: #9fb2bd; font-size: 15px; letter-spacing: .14em; }

.qg-pro-head h1 { font-size: 34px; line-height: 1.35; margin-bottom: 16px; }

.qg-pro-head__lead {
    font-size: 16.5px;
    color: var(--muted);
    line-height: 1.95;
    margin-bottom: 24px;
}

.qg-pro-kv {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-s);
    overflow: hidden;
    margin-bottom: 26px;
}

.qg-pro-kv div { background: #fff; padding: 13px 17px; font-size: 15px; }
.qg-pro-kv span { color: var(--muted); display: block; font-size: 13.5px; margin-bottom: 3px; }
.qg-pro-kv b { color: var(--ink-900); font-size: 16.5px; }

.qg-pro-head__btns { display: flex; flex-wrap: wrap; gap: 13px; }

/* ---------- 17. 询价表单 ---------- */
.qg-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.qg-form .qg-field--full { grid-column: 1 / -1; }
.qg-field label { display: block; font-size: 14.5px; color: var(--text-2); margin-bottom: 7px; font-weight: 600; }

.qg-field input,
.qg-field textarea,
.qg-field select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    background: #fff;
    outline: none;
    font-size: 15.5px;
    color: var(--text);
    transition: border-color .2s ease, box-shadow .2s ease;
}

.qg-field textarea { min-height: 116px; resize: vertical; line-height: 1.8; }

.qg-field input:focus,
.qg-field textarea:focus,
.qg-field select:focus {
    border-color: var(--teal-500);
    box-shadow: 0 0 0 3px rgba(18, 168, 162, .14);
}

.qg-field__hint { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* ---------- 18. 联系信息块 ---------- */
.qg-contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }

.qg-contact-card {
    padding: 28px 26px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    border-top: 3px solid var(--teal-600);
}

.qg-contact-card h3 { font-size: 18px; margin-bottom: 12px; }
.qg-contact-card p { font-size: 15.5px; color: var(--text-2); line-height: 1.95; margin: 0; }
.qg-contact-card strong { color: var(--ink-900); font-size: 19px; }

/* ---------- 19. FAQ ---------- */
.qg-faq { border-top: 1px solid var(--line); }

.qg-faq__item { border-bottom: 1px solid var(--line); }

.qg-faq__q {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
    padding: 22px 4px;
    background: none;
    border: 0;
    text-align: left;
    cursor: pointer;
    font-size: 17.5px;
    font-weight: 600;
    color: var(--ink-900);
    line-height: 1.65;
}

.qg-faq__q:hover { color: var(--teal-700); }

.qg-faq__q i {
    flex: 0 0 26px;
    height: 26px;
    margin-top: 2px;
    border-radius: var(--radius-s);
    background: var(--teal-50);
    color: var(--teal-700);
    font-style: normal;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qg-faq__q::after {
    content: "";
    margin-left: auto;
    flex: 0 0 10px;
    width: 10px;
    height: 10px;
    margin-top: 10px;
    border-right: 2px solid #9db3be;
    border-bottom: 2px solid #9db3be;
    transform: rotate(45deg);
    transition: transform .25s;
}

.qg-faq__item.is-open .qg-faq__q::after { transform: rotate(-135deg); }

.qg-faq__a {
    display: none;
    padding: 0 40px 24px 44px;
    font-size: 16px;
    line-height: 2;
    color: var(--text-2);
}

.qg-faq__item.is-open .qg-faq__a { display: block; }
.qg-faq__a p:last-child { margin-bottom: 0; }

/* ---------- 20. CTA 通栏 ---------- */
.qg-cta {
    position: relative;
    background: linear-gradient(120deg, var(--ink-900) 0%, #0b3e60 55%, var(--teal-700) 130%);
    color: #fff;
    padding: 62px 0;
    overflow: hidden;
}

.qg-cta__inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.qg-cta h2 { font-size: 31px; color: #fff; margin-bottom: 10px; }
.qg-cta p { margin: 0; font-size: 16.5px; color: #b8d3e1; max-width: 640px; }
.qg-cta__btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 21. 页脚 ---------- */
.qg-footer {
    background: #06263c;
    color: #8fabbb;
    padding: 60px 0 0;
    font-size: 15px;
}

.qg-footer__top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
    gap: 40px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, .09);
}

.qg-footer h3 {
    color: #fff;
    font-size: 16.5px;
    margin-bottom: 20px;
    letter-spacing: .02em;
}

.qg-footer__brand .qg-logo__cn { color: #fff; }
.qg-footer__brand .qg-logo__en { color: #7d99a9; }
.qg-footer__brand .qg-logo__mark { background: linear-gradient(150deg, var(--teal-700), var(--teal-500)); }
.qg-footer__brand p { margin: 18px 0 0; line-height: 1.95; font-size: 14.8px; }

.qg-footer__links li { margin-bottom: 11px; }
.qg-footer__links a { color: #8fabbb; font-size: 14.8px; }
.qg-footer__links a:hover { color: #fff; }

.qg-footer__contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 13px;
    line-height: 1.8;
    font-size: 14.8px;
}

.qg-footer__contact svg { width: 16px; height: 16px; fill: var(--teal-500); flex: 0 0 16px; margin-top: 6px; }
.qg-footer__contact strong { color: #fff; font-size: 21px; font-weight: 700; }

.qg-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 22px 0;
    font-size: 14px;
    color: #6d8b9c;
}

.qg-footer__bottom a { color: #6d8b9c; }
.qg-footer__bottom a:hover { color: #fff; }

.qg-keywords {
    padding: 14px 0 26px;
    border-top: 1px solid rgba(255, 255, 255, .07);
    font-size: 13.5px;
    line-height: 2.1;
    color: #5f7d8e;
}

.qg-keywords a { color: #5f7d8e; margin-right: 14px; white-space: nowrap; }
.qg-keywords a:hover { color: var(--teal-500); }

/* ---------- 22. 浮动侧边联系 ---------- */
.qg-float {
    position: fixed;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 80;
    display: flex;
    flex-direction: column;
    gap: 1px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.qg-float__item {
    width: 62px;
    padding: 12px 4px 10px;
    background: var(--ink-800);
    color: #cfe2ec;
    text-align: center;
    font-size: 12.5px;
    line-height: 1.4;
    cursor: pointer;
    transition: background .2s ease;
}

.qg-float__item:hover { background: var(--teal-600); color: #fff; }
.qg-float__item svg { width: 21px; height: 21px; fill: currentColor; display: block; margin: 0 auto 5px; }

.qg-float__tel {
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .01em;
    word-break: break-all;
}

/* 返回顶部 */
.qg-top-btn {
    position: fixed;
    right: 16px;
    bottom: 26px;
    z-index: 80;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: var(--radius);
    background: var(--ink-800);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all .28s ease;
    box-shadow: var(--shadow);
}

.qg-top-btn.is-show { opacity: 1; visibility: visible; }
.qg-top-btn:hover { background: var(--teal-600); }
.qg-top-btn svg { width: 20px; height: 20px; fill: #fff; }

/* ---------- 23. 搜索页 ---------- */
.qg-searchbar {
    display: flex;
    gap: 12px;
    padding: 22px 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 26px;
}

.qg-searchbar input {
    flex: 1 1 auto;
    height: 48px;
    padding: 0 16px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    outline: none;
    font-size: 16px;
}

.qg-searchbar input:focus { border-color: var(--teal-500); }

/* ---------- 24. 404 / 提示页 ---------- */
.qg-simple {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mist);
    padding: 40px 20px;
}

.qg-simple__box {
    width: 100%;
    max-width: 560px;
    padding: 52px 44px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow);
    text-align: center;
}

.qg-simple__code {
    font-size: 78px;
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(140deg, var(--ink-800), var(--teal-500));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 16px;
}

.qg-simple__box h1 { font-size: 24px; margin-bottom: 12px; }
.qg-simple__box p { color: var(--muted); font-size: 16px; margin-bottom: 26px; }
.qg-simple__acts { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- 25. 动画 ---------- */
.qg-reveal {
    transition: opacity .6s ease, transform .6s ease;
}

/* 初始隐藏状态由 JS 添加，保证禁用 JS 时内容依然完整可见 */
.qg-reveal.qg-hide {
    opacity: 0;
    transform: translateY(18px);
}

.qg-reveal.qg-hide.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .qg-reveal { opacity: 1; transform: none; transition: none; }
    .qg-card:hover,
    .qg-app:hover { transform: none; }
}

/* ==========================================================================
   26. 响应式
   ========================================================================== */

/* 平板 */
@media (max-width: 1366px) {
    .qg-hero__inner { grid-template-columns: minmax(0, 1fr) 340px; gap: 36px; }
    .qg-hero h1 { font-size: 40px; }
    .qg-nav__list > li > a { padding: 0 9px; font-size: 15px; }
    .qg-nav__list > li > a::after { left: 9px; right: 9px; }
    .qg-logo img { height: 40px; }
    .qg-hdtel strong { font-size: 15.5px; }
    .qg-hdtel span span { display: none; }
    .qg-layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 30px; }
    .qg-pro-head { grid-template-columns: 340px minmax(0, 1fr); gap: 32px; }
}

/* 小屏桌面 → 切换汉堡菜单 */
@media (max-width: 1024px) {
    :root { --header-h: 64px; }

    .qg-topbar { font-size: 13px; }
    .qg-topbar__left .qg-topbar__tag:nth-child(n+2) { display: none; }

    .qg-nav,
    .qg-hdtel { display: none; }

    .qg-burger { display: flex; margin-left: auto; }

    .qg-header__side { margin-left: auto; }
    .qg-burger { margin-left: 0; }

    .qg-hero__inner {
        grid-template-columns: minmax(0, 1fr);
        gap: 34px;
        padding: 56px 0 52px;
    }

    .qg-hero h1 { font-size: 34px; }
    .qg-hero__lead { font-size: 16.5px; }
    .qg-hero__metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .qg-layout { grid-template-columns: minmax(0, 1fr); padding: 40px 0 60px; }
    .qg-pro-head { grid-template-columns: minmax(0, 1fr); padding: 30px 0 36px; }
    .qg-pro-head__img { max-width: 420px; margin: 0 auto; }

    .qg-about { grid-template-columns: minmax(0, 1fr); gap: 34px; }
    .qg-section { padding: 56px 0; }
    .qg-sec-title { font-size: 28px; }

    .qg-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .qg-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .qg-adv { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .qg-adv__item:nth-child(2) { border-right: 0; }
    .qg-adv__item:nth-child(1),
    .qg-adv__item:nth-child(2) { border-bottom: 1px solid var(--line); }
    .qg-contact-grid { grid-template-columns: minmax(0, 1fr); }

    .qg-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }

    .qg-float { display: none; }
    .qg-article { padding: 32px 28px 36px; }
}

/* 手机 */
@media (max-width: 768px) {
    body { font-size: 16px; line-height: 1.9; }

    .qg-wrap { padding: 0 16px; }

    .qg-topbar { line-height: 36px; }
    .qg-topbar__inner { justify-content: space-between; gap: 10px; }
    .qg-topbar__left { flex: 1 1 auto; min-width: 0; gap: 0; }
    .qg-topbar__left .qg-topbar__tag {
        max-width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .qg-topbar__left .qg-topbar__tag svg { flex: 0 0 13px; }
    .qg-topbar__right { flex: 0 0 auto; gap: 0; }
    .qg-topbar__right > span { display: none; }
    .qg-topbar__tel { white-space: nowrap; font-size: 14.5px; }

    .qg-logo__cn { font-size: 18.5px; }
    .qg-logo__en { font-size: 10px; letter-spacing: .12em; }
    .qg-logo__mark { width: 36px; height: 36px; font-size: 16px; }
    .qg-logo img { height: 33px; }

    .qg-hero__inner { padding: 42px 0 40px; }
    .qg-hero h1 { font-size: 27px; line-height: 1.35; }
    .qg-hero__lead { font-size: 15.5px; margin-bottom: 24px; }
    .qg-hero__btns { gap: 10px; margin-bottom: 26px; }
    .qg-hero__btns .qg-btn { flex: 1 1 46%; height: 46px; padding: 0 14px; font-size: 15.5px; }
    .qg-hero__badge { font-size: 12.5px; padding: 6px 12px; }

    .qg-hero__metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .qg-hero__metric { padding: 13px 12px; }
    .qg-hero__metric b { font-size: 22px; }
    .qg-hero__metric span { font-size: 12.5px; }

    .qg-card-spec__hd { padding: 16px 18px 13px; }
    .qg-card-spec__hd h2 { font-size: 18px; }
    .qg-card-spec__body { padding: 6px 18px 16px; }
    .qg-card-spec__row { padding: 11px 0; font-size: 14.8px; }
    .qg-card-spec__ft { padding: 14px 18px 18px; }

    .qg-section { padding: 42px 0; }
    .qg-section--tight { padding: 34px 0; }
    .qg-sec-head { margin-bottom: 26px; }
    .qg-sec-title { font-size: 23px; padding-left: 15px; margin-bottom: 11px; }
    .qg-sec-desc { font-size: 15px; }
    .qg-sec-foot { margin-top: 28px; }

    .qg-grid { gap: 14px; }
    .qg-grid--4,
    .qg-grid--3,
    .qg-grid--2 { grid-template-columns: minmax(0, 1fr); }
    .qg-card__body { padding: 18px 18px 20px; }
    .qg-card__title { font-size: 17.5px; }
    .qg-card__desc { font-size: 14.6px; }

    .qg-adv { grid-template-columns: minmax(0, 1fr); }
    .qg-adv__item { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 20px; }
    .qg-adv__item:last-child { border-bottom: 0; }
    .qg-adv__ico { width: 44px; height: 44px; margin-bottom: 14px; }
    .qg-adv__item h3 { font-size: 17px; }

    .qg-app { padding: 20px 18px; }
    .qg-app h3 { font-size: 17px; }

    .qg-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .qg-fact { padding: 18px 16px; }
    .qg-fact b { font-size: 24px; }
    .qg-fact span { font-size: 13.5px; }

    .qg-banner { padding: 34px 0 30px; }
    .qg-banner__title { font-size: 25px; }
    .qg-banner__desc { font-size: 15px; }
    .qg-banner__crumb { font-size: 13.5px; margin-bottom: 10px; }

    .qg-layout { padding: 30px 0 46px; gap: 26px; }

    .qg-item { flex-direction: column; gap: 14px; padding: 20px 0; }
    .qg-item__thumb { flex: none; width: 100%; aspect-ratio: 16 / 9; }
    .qg-item__title { font-size: 17.5px; }
    .qg-item__desc { font-size: 14.8px; }

    .qg-panel__hd { padding: 15px 18px; }
    .qg-panel__hd h2 { font-size: 17px; }
    .qg-panel__body { padding: 4px 18px 18px; }

    .qg-article { padding: 24px 18px 28px; border-radius: var(--radius-s); }
    .qg-article__title { font-size: 23px; }
    .qg-rich { font-size: 16.5px; line-height: 2; }
    .qg-rich h2 { font-size: 20px; }
    .qg-rich h3 { font-size: 18px; }

    .qg-rich table { font-size: 14.5px; display: block; overflow-x: auto; white-space: nowrap; }
    .qg-rich table th,
    .qg-rich table td { padding: 10px 12px; }

    .qg-rich ul.qg_attrs { grid-template-columns: minmax(0, 1fr); }

    .qg-article__pn { grid-template-columns: minmax(0, 1fr); }
    .qg-article__meta { gap: 6px 16px; font-size: 13.5px; }

    .qg-tagbar__row { flex-direction: column; gap: 8px; padding: 12px 0; }
    .qg-tagbar__label { flex: none; line-height: 1.6; padding-left: 10px; }
    .qg-tagbar__label::before { top: 3px; bottom: 3px; }
    .qg-tagbar__list { width: 100%; }

    .qg-inline-cta { padding: 20px 18px; }
    .qg-inline-cta h3 { font-size: 18px; }
    .qg-inline-cta__btns { width: 100%; }
    .qg-inline-cta__btns .qg-btn { flex: 1 1 100%; }

    .qg-pro-head { padding: 24px 0 30px; }
    .qg-pro-head h1 { font-size: 25px; }
    .qg-pro-head__lead { font-size: 15.5px; }
    .qg-pro-kv { grid-template-columns: minmax(0, 1fr); }
    .qg-pro-head__btns .qg-btn { flex: 1 1 100%; }

    .qg-form { grid-template-columns: minmax(0, 1fr); }
    .qg-contact-grid { gap: 14px; }
    .qg-contact-card { padding: 22px 18px; }

    .qg-cta { padding: 40px 0; }
    .qg-cta h2 { font-size: 23px; }
    .qg-cta p { font-size: 15px; }
    .qg-cta__btns { width: 100%; }
    .qg-cta__btns .qg-btn { flex: 1 1 100%; }

    .qg-footer { padding-top: 40px; }
    .qg-footer__top { grid-template-columns: minmax(0, 1fr); gap: 26px; padding-bottom: 30px; }
    .qg-footer h3 { margin-bottom: 14px; font-size: 16px; }
    .qg-footer__bottom { justify-content: center; text-align: center; font-size: 13px; }
    .qg-keywords { font-size: 12.5px; }

    .qg-searchbar { flex-direction: column; padding: 18px; }
    .qg-searchbar .qg-btn { width: 100%; }

    /* 移动端搜索面板铺满 */
    .qg-hdsearch__panel {
        position: fixed;
        left: 12px;
        right: 12px;
        top: calc(var(--header-h) + 52px);
        width: auto;
    }

    .qg-simple__box { padding: 36px 22px; }
    .qg-simple__code { font-size: 60px; }
    .qg-simple__acts .qg-btn { flex: 1 1 100%; }

    .qg-top-btn { right: 12px; bottom: 16px; width: 42px; height: 42px; }
}

/* 超小屏 */
@media (max-width: 400px) {
    .qg-hero h1 { font-size: 24px; }
    .qg-hero__metric b { font-size: 20px; }
    .qg-facts { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 27. 打印 ---------- */
@media print {
    .qg-header,
    .qg-topbar,
    .qg-footer,
    .qg-float,
    .qg-top-btn,
    .qg-cta,
    .qg-side-card,
    .qg-side-cta { display: none !important; }
    .qg-layout { grid-template-columns: minmax(0, 1fr); }
    .qg-article { border: 0; padding: 0; }
}