/* ============================================================
   油老大 · 青矅绿主题  Glassmorphism + Glow + Motion
   ============================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 青矅绿 主色体系 */
    --primary: #1F6B57;
    --primary-dark: #164739;
    --primary-deep: #0e2e25;
    --primary-light: #2a9d7e;
    --accent: #3ddc97;
    --accent-bright: #00e6a8;
    --tint: #e8f5f0;
    --tint-2: #d4ece4;

    --text: #0f1f1a;
    --text-light: #48635a;
    --text-muted: #7a938a;
    --bg: #ffffff;
    --bg-alt: #f3f9f6;
    --border: #dce8e3;
    --glass: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.55);

    --radius: 14px;
    --radius-lg: 24px;
    --shadow: 0 6px 24px rgba(31, 107, 87, 0.10);
    --shadow-hover: 0 20px 50px rgba(31, 107, 87, 0.22);
    --glow: 0 0 40px rgba(61, 220, 151, 0.35);

    --grad-primary: linear-gradient(135deg, #1F6B57 0%, #2a9d7e 50%, #3ddc97 100%);
    --grad-deep: linear-gradient(135deg, #0e2e25 0%, #1F6B57 60%, #2a9d7e 100%);
    --grad-text: linear-gradient(135deg, #1F6B57 0%, #3ddc97 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color .25s;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 34px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all .3s cubic-bezier(.4, 0, .2, 1);
    border: 2px solid transparent;
    white-space: nowrap;
    overflow: hidden;
    isolation: isolate;
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 8px 24px rgba(31, 107, 87, 0.35);
}

/* 光泽扫过 */
.btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    left: -120%;
    width: 60%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    transition: left .6s;
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 36px rgba(31, 107, 87, 0.5), 0 0 30px rgba(61, 220, 151, 0.4);
}

.btn-primary:hover::before {
    left: 120%;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(31, 107, 87, 0.35);
}

.btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-light:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.25), 0 0 24px rgba(61, 220, 151, 0.5);
}

.btn-sm {
    padding: 10px 22px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
}

/* ============================================================
   头部导航  Glassmorphism
   ============================================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid rgba(220, 232, 227, 0.6);
    transition: box-shadow .3s, background .3s;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 4px 24px rgba(31, 107, 87, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 23px;
    color: var(--text);
}

.logo-icon {
    font-size: 27px;
    filter: drop-shadow(0 2px 6px rgba(31, 107, 87, 0.4));
}

.logo-img {
    height: 38px;
    width: 38px;
    object-fit: contain;
    border-radius: 10px;
    filter: drop-shadow(0 3px 8px rgba(31, 107, 87, 0.35));
    transition: transform .3s;
}

.logo:hover .logo-img {
    transform: rotate(-6deg) scale(1.08);
}

.footer .logo-img {
    height: 40px;
    width: 40px;
    background: rgba(255, 255, 255, 0.06);
    padding: 4px;
}

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

.nav {
    display: flex;
    gap: 34px;
}

.nav-link {
    font-size: 15px;
    color: var(--text-light);
    font-weight: 500;
    position: relative;
    padding: 6px 0;
    transition: color .25s;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -6px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--grad-primary);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(61, 220, 151, 0.6);
}

/* ============================================================
   Hero  流光 + 网格 + 玻璃卡
   ============================================================ */
.hero {
    position: relative;
    padding: 90px 0 110px;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(61, 220, 151, 0.18), transparent 60%),
        radial-gradient(ellipse 70% 50% at 80% 30%, rgba(31, 107, 87, 0.20), transparent 60%),
        linear-gradient(135deg, #f3f9f6 0%, #e8f5f0 100%);
}

/* 网格底纹 */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(31, 107, 87, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 107, 87, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, #000, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, #000, transparent 75%);
    pointer-events: none;
}

/* 流动光斑 */
.hero::after {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61, 220, 151, 0.25), transparent 60%);
    top: -100px;
    right: -100px;
    filter: blur(40px);
    animation: drift 14s ease-in-out infinite;
    pointer-events: none;
}

@keyframes drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-60px, 80px) scale(1.15); }
}

.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    z-index: 2;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 18px;
    background: rgba(31, 107, 87, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 22px;
    border: 1px solid rgba(31, 107, 87, 0.18);
    backdrop-filter: blur(6px);
}

.badge::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .5; transform: scale(1.4); }
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.18;
    color: var(--text);
    margin-bottom: 26px;
    letter-spacing: -1px;
}

.hero-title span {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 38px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 52px;
}

.stat-num {
    font-size: 34px;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Hero visual */
.hero-visual {
    position: relative;
    height: 440px;
}

.hero-circle {
    position: absolute;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(61, 220, 151, 0.28), transparent 70%);
    filter: blur(20px);
    animation: breathe 6s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: .8; }
    50% { transform: translate(-50%, -50%) scale(1.12); opacity: 1; }
}

.float-card {
    position: absolute;
    background: var(--glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 18px 22px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-hover);
    animation: float 4s ease-in-out infinite;
    transition: transform .3s;
}

.float-card .card-icon {
    font-size: 26px;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--grad-primary);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(31, 107, 87, 0.3);
}

.float-card .card-title {
    font-weight: 700;
    font-size: 16px;
    color: var(--text);
}

.float-card .card-sub {
    font-size: 13px;
    color: var(--text-muted);
}

.card-1 { top: 30px; left: -10px; animation-delay: 0s; }
.card-2 { top: 175px; right: 0; animation-delay: 1.2s; }
.card-3 { bottom: 30px; left: 60px; animation-delay: 2.4s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

/* ============================================================
   Section 通用
   ============================================================ */
.section {
    padding: 110px 0;
    position: relative;
}

.section-alt {
    background: var(--bg-alt);
}

.section-head {
    text-align: center;
    max-width: 740px;
    margin: 0 auto 68px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--tint);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 18px;
    border: 1px solid var(--tint-2);
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.3;
    letter-spacing: -.5px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-light);
}

/* ============================================================
   Grid
   ============================================================ */
.grid {
    display: grid;
    gap: 28px;
}

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

/* ============================================================
   Feature Card  发光边框 hover
   ============================================================ */
.feature-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 38px 32px;
    transition: all .35s cubic-bezier(.4, 0, .2, 1);
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1.5px;
    background: var(--grad-primary);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity .35s;
}

.feature-card::after {
    content: "";
    position: absolute;
    top: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--grad-primary);
    opacity: 0;
    transition: opacity .35s;
    filter: blur(2px);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.feature-card:hover::before,
.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tint);
    border-radius: 14px;
    font-size: 28px;
    margin-bottom: 22px;
    transition: all .35s;
}

.feature-card:hover .feature-icon {
    background: var(--grad-primary);
    transform: scale(1.08) rotate(-6deg);
    box-shadow: 0 8px 20px rgba(31, 107, 87, 0.35);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* ============================================================
   Split
   ============================================================ */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-content .section-title {
    text-align: left;
}

.split-content .section-desc {
    text-align: left;
    margin-bottom: 28px;
}

.check-list {
    list-style: none;
    margin-bottom: 34px;
}

.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    color: var(--text-light);
    font-size: 15px;
}

.check-list li span {
    color: #fff;
    background: var(--grad-primary);
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(31, 107, 87, 0.3);
}

/* Panel 仪表盘 */
.panel {
    background: var(--glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    overflow: hidden;
}

.panel-head {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(243, 249, 246, 0.6);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.panel-title {
    margin-left: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
}

.panel-body {
    padding: 24px;
}

.panel-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.panel-row:last-of-type {
    border-bottom: none;
}

.panel-row span {
    color: var(--text-muted);
}

.panel-row strong {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.panel-row strong.up {
    color: #1F6B57;
}

.panel-bar {
    margin-top: 18px;
}

.bar-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.bar-track {
    height: 8px;
    background: var(--border);
    border-radius: 50px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--grad-primary);
    border-radius: 50px;
    transition: width 1.2s cubic-bezier(.4, 0, .2, 1);
    box-shadow: 0 0 12px rgba(61, 220, 151, 0.5);
}

/* ============================================================
   Value Card
   ============================================================ */
.value-card {
    text-align: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 42px 32px;
    transition: all .35s;
    position: relative;
    overflow: hidden;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: var(--tint-2);
}

.value-num {
    font-size: 46px;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.value-label {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-light);
    font-size: 14px;
}

.value-icon {
    font-size: 38px;
    margin-bottom: 18px;
    display: inline-block;
    transition: transform .35s;
}

.value-card:hover .value-icon {
    transform: scale(1.15) translateY(-4px);
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
    position: relative;
    background: var(--grad-deep);
    padding: 90px 0;
    color: #fff;
    text-align: center;
    overflow: hidden;
}

.cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000, transparent 80%);
}

.cta::after {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61, 220, 151, 0.25), transparent 60%);
    bottom: -300px;
    left: 50%;
    transform: translateX(-50%);
    filter: blur(30px);
    animation: breathe 8s ease-in-out infinite;
}

.cta-inner {
    position: relative;
    z-index: 2;
}

.cta-inner h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -.5px;
}

.cta-inner p {
    font-size: 17px;
    opacity: 0.9;
    margin-bottom: 34px;
}

/* ============================================================
   公司简介 (about 页)
   ============================================================ */
.section-intro {
    position: relative;
    overflow: hidden;
}

.section-intro::before {
    content: "";
    position: absolute;
    top: -120px;
    right: -120px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61, 220, 151, 0.16), transparent 65%);
    filter: blur(40px);
    pointer-events: none;
    animation: drift 16s ease-in-out infinite;
}

.intro-wrap {
    position: relative;
    z-index: 2;
    max-width: 880px;
    margin: 0 auto;
}

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

.intro-head .section-title {
    font-size: 36px;
}

.intro-body {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.intro-body p {
    font-size: 16.5px;
    line-height: 2;
    color: var(--text-light);
    text-align: justify;
}

.intro-body p:first-child {
    font-size: 17.5px;
    color: var(--text);
    font-weight: 500;
}

.intro-timeline {
    margin-top: 52px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    position: relative;
    padding-top: 36px;
}

.intro-timeline::before {
    content: "";
    position: absolute;
    top: 12px;
    left: 16%;
    right: 16%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-light), var(--accent), var(--primary-light), transparent);
    opacity: .4;
}

.tl-item {
    text-align: center;
    position: relative;
}

.tl-item::before {
    content: "";
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(31, 107, 87, 0.12), 0 0 14px rgba(61, 220, 151, 0.5);
    transition: all .35s;
}

.tl-item:hover::before {
    background: var(--grad-primary);
    transform: translateX(-50%) scale(1.25);
}

.tl-year {
    font-size: 30px;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    line-height: 1;
}

.tl-text {
    font-size: 14px;
    color: var(--text-muted);
    padding: 0 12px;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
    background: linear-gradient(180deg, #0a1f18 0%, #051410 100%);
    color: #8aa39a;
    padding: 70px 0 0;
    position: relative;
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: .4;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 18px;
    font-weight: 600;
}

.footer-col a {
    display: block;
    color: #8aa39a;
    font-size: 14px;
    padding: 6px 0;
    transition: all .25s;
}

.footer-col a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.footer-bottom a:hover {
    color: var(--accent);
}

/* ============================================================
   Page Head
   ============================================================ */
.page-head {
    position: relative;
    padding: 90px 0 70px;
    text-align: center;
    overflow: hidden;
    background:
        radial-gradient(ellipse 70% 60% at 50% 0%, rgba(61, 220, 151, 0.18), transparent 60%),
        linear-gradient(135deg, #f3f9f6 0%, #e8f5f0 100%);
}

.page-head::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(31, 107, 87, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 107, 87, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, #000, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, #000, transparent 75%);
}

.page-head .container {
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text);
    letter-spacing: -.5px;
}

.page-desc {
    font-size: 17px;
    color: var(--text-light);
    max-width: 640px;
    margin: 0 auto;
}

/* ============================================================
   Feature Block (产品页)
   ============================================================ */
.feature-block {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 32px;
    padding: 50px 0;
    border-bottom: 1px solid var(--border);
}

.feature-block:last-child {
    border-bottom: none;
}

.feature-block-num {
    font-size: 48px;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    opacity: .85;
}

.feature-block-body h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-block-body > p {
    color: var(--text-light);
    margin-bottom: 28px;
    font-size: 16px;
}

.sub-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.sub-item {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 24px;
    transition: all .3s;
}

.sub-item:hover {
    background: #fff;
    border-color: var(--tint-2);
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.sub-item strong {
    display: block;
    font-size: 15px;
    margin-bottom: 6px;
    color: var(--text);
}

.sub-item span {
    font-size: 14px;
    color: var(--text-muted);
}

/* ============================================================
   Solution Card
   ============================================================ */
.solution-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 38px 32px;
    transition: all .35s;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.solution-card:hover::before {
    transform: scaleX(1);
}

.solution-icon {
    font-size: 42px;
    margin-bottom: 18px;
    display: inline-block;
    transition: transform .35s;
}

.solution-card:hover .solution-icon {
    transform: scale(1.1);
}

.solution-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
}

.solution-card > p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 15px;
}

/* ============================================================
   Steps
   ============================================================ */
.steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
}

.step {
    text-align: center;
    position: relative;
}

.step-num {
    width: 60px;
    height: 60px;
    margin: 0 auto 18px;
    background: var(--grad-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    box-shadow: 0 6px 18px rgba(31, 107, 87, 0.35);
    transition: transform .35s;
    position: relative;
    z-index: 2;
}

.step:hover .step-num {
    transform: scale(1.12) translateY(-4px);
}

.step h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.step p {
    font-size: 14px;
    color: var(--text-muted);
}

/* ============================================================
   About Stats
   ============================================================ */
.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.about-stat {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 34px;
    text-align: center;
    transition: all .35s;
    position: relative;
    overflow: hidden;
}

.about-stat::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--grad-primary);
    opacity: 0;
    transition: opacity .35s;
    z-index: 0;
}

.about-stat:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.about-stat:hover::before {
    opacity: .04;
}

.about-stat > * {
    position: relative;
    z-index: 1;
}

.about-num {
    font-size: 38px;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.about-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* ============================================================
   Contact
   ============================================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 24px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
    padding: 16px;
    border-radius: var(--radius);
    transition: all .3s;
}

.contact-item:hover {
    background: var(--bg-alt);
    transform: translateX(6px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--grad-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(31, 107, 87, 0.3);
}

.contact-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.contact-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.contact-form-wrap {
    background: var(--glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 42px;
    box-shadow: var(--shadow-hover);
}

.form-row {
    margin-bottom: 20px;
}

.form-row label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-row label span {
    color: #e74c3c;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    transition: all .25s;
    background: rgba(255, 255, 255, 0.6);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(31, 107, 87, 0.12);
}

.form-row textarea {
    resize: vertical;
}

.form-tip {
    margin-top: 14px;
    text-align: center;
    font-size: 14px;
    color: var(--primary);
    min-height: 20px;
    font-weight: 600;
}

/* ============================================================
   滚动渐入动画
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .8s cubic-bezier(.4, 0, .2, 1), transform .8s cubic-bezier(.4, 0, .2, 1);
}

.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }
.reveal[data-delay="5"] { transition-delay: .5s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
    .nav {
        display: none;
    }

    .hero-inner,
    .split,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 40px;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }

    .hero-stats {
        gap: 28px;
    }

    .section {
        padding: 70px 0;
    }

    .feature-block {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .sub-grid {
        grid-template-columns: 1fr;
    }

    .intro-timeline {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-top: 20px;
    }

    .intro-timeline::before {
        display: none;
    }

    .tl-item::before {
        top: -18px;
    }

    .intro-head .section-title {
        font-size: 28px;
    }
}

@media (max-width: 600px) {
    .hero-visual {
        display: none;
    }

    .hero-title {
        font-size: 32px;
    }

    .section-title,
    .page-title {
        font-size: 28px;
    }

    .steps {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .footer-bottom .container {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .btn {
        padding: 12px 26px;
    }

    .contact-form-wrap {
        padding: 28px;
    }
}

/* 尊重 reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}