/* ========== About 页面 - 极简风格 ========== */
        * { margin: 0; padding: 0; box-sizing: border-box; }

        .about_page {
            background: #fff;
            color: #1a1a1a;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }

        /* ===== 板块1：首屏 Hero ===== */
        .about_hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 60px 80px;
            background: #fff;
            z-index: 1;
        }
        .about_hero .text_wrap {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }
        .about_hero .en_title {
            font-size: clamp(36px, 5.5vw, 80px);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -1px;
            color: #1a1a1a;
            margin-bottom: 40px;
        }
        .about_hero .en_title .highlight {
            position: relative;
            display: inline-block;
        }
        .about_hero .en_title .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 4px;
            width: 100%;
            height: 14px;
            background: #ff5d59;
            z-index: -1;
        }
        .about_hero .cn_title {
            font-size: clamp(22px, 3vw, 40px);
            font-weight: 700;
            line-height: 1.4;
            color: #1a1a1a;
            letter-spacing: 1px;
        }
        .about_hero .sprout_area {
            position: absolute;
            left: 50%;
            bottom: 10%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .about_hero .sprout_area .soil {
            width: 200px;
            height: 120px;
            background: radial-gradient(ellipse at center, #5c4033 0%, #3d2817 60%, transparent 100%);
            border-radius: 50%;
            position: relative;
        }
        .about_hero .sprout_area .sprout {
            position: absolute;
            top: -30px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 40px;
            background: linear-gradient(to top, #4a7c23, #7cb342);
            border-radius: 50% 50% 0 0;
        }
        .about_hero .sprout_area .sprout::before,
        .about_hero .sprout_area .sprout::after {
            content: '';
            position: absolute;
            top: 8px;
            width: 24px;
            height: 14px;
            background: #7cb342;
            border-radius: 50% 0 50% 50%;
        }
        .about_hero .sprout_area .sprout::before {
            left: -20px;
            transform: rotate(-30deg);
        }
        .about_hero .sprout_area .sprout::after {
            right: -20px;
            transform: rotate(30deg) scaleX(-1);
        }

        /* ===== 板块2：Fixed 大图 ===== */
        .about_fixed_img {
            position: relative;
            height: 100vh;
            overflow: hidden;
        }
        .about_fixed_img .bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            z-index: 0;
        }
        .about_fixed_img .overlay {
            position: relative;
            z-index: 1;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .about_fixed_img .overlay .quote {
            color: #fff;
            font-size: clamp(24px, 4vw, 48px);
            font-weight: 300;
            text-align: center;
            max-width: 800px;
            line-height: 1.6;
            letter-spacing: 2px;
            padding: 0 40px;
        }

        /* ===== 板块3：三个主题 + 滚动英文背景 ===== */
        .about_themes {
            position: relative;
            min-height: 35vh;
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding: 100px 40px;
        }
        .about_themes .bg_scroll {
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 100%;
            overflow: hidden;
            z-index: 0;
            white-space: nowrap;
        }
        .about_themes .bg_scroll .track {
            display: inline-block;
            animation: scrollLeft 30s linear infinite;
            font-size: clamp(80px, 18vw, 280px);
            font-weight: 900;
            color: rgba(0,0,0,0.04);
            letter-spacing: -4px;
            line-height: 1;
        }
        @keyframes scrollLeft {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .about_themes .themes_grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 60px;
            max-width: 1200px;
            width: 100%;
        }
        .about_themes .theme_item {
            text-align: center;
            cursor: pointer;
            transition: transform 0.3s;
        }
        .about_themes .theme_item:hover {
            transform: translateY(-6px);
        }
        .about_themes .theme_item .title {
            font-size: clamp(24px, 3vw, 40px);
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }
        .about_themes .theme_item .more {
            font-size: 14px;
            color: #888;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .about_themes .theme_item .more::after {
            content: '+';
            font-size: 18px;
            font-weight: 300;
        }

        /* ===== 板块4：逐行变黑介绍文字 ===== */
        .about_manifesto {
            position: relative;
            background: #fff;
            padding: 150px 60px;
        }
        .about_manifesto .text_container {
            max-width: 900px;
        }
        .about_manifesto .line {
            font-size: clamp(18px, 2.2vw, 28px);
            font-weight: 600;
            line-height: 1.8;
            margin-bottom: 8px;
            letter-spacing: 1px;
            /* 滚动驱动的从左到右变黑：--p 由 JS 随滚动写入 0%~100%，与滚动位置 1:1 绑定、可逆 */
            --fill: #1a1a1a;
            --rest: #ccc;
            --p: 0%;
            background-image: linear-gradient(90deg,
                var(--fill) 0,
                var(--fill) var(--p),
                var(--rest) var(--p));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            -webkit-text-fill-color: transparent;
            isolation: isolate;
        }
        .about_manifesto .line .underline {
            position: relative;
            display: inline;
        }
        .about_manifesto .line .underline::after {
            content: '';
            position: absolute;
            bottom: -9px;
            width: 100%;
            height: 4px;
            background: #ff4a2f;
            z-index: -1;
            mix-blend-mode: darken;
        }
        .about_manifesto .line .underline-left::after {
            left: 0;
            bottom: -9px;
            width: 40%;
            min-width: 86px;
        }
        .about_manifesto .line .underline-right::after {
            right: 0;
            bottom: -9px;
            width: 45%;
            min-width: 102px;
        }

        .about_manifesto .en_line {
            font-size: clamp(18px, 1.4vw, 18px);
            font-weight: 500;
            line-height: 1.8;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
            --fill: #1a1a1a;
            --rest: #ccc;
            --p: 0%;
            background-image: linear-gradient(90deg,
                var(--fill) 0,
                var(--fill) var(--p),
                var(--rest) var(--p));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            -webkit-text-fill-color: transparent;
            isolation: isolate;
        }
        .about_manifesto .gap {
            height: 30px;
        }

        /* ===== 板块5：品牌大字 Slogan ===== */
        .about_slogan {
            position: relative;
            background: #fff;
            padding: 120px 60px 150px;
        }
        .about_slogan .big_words {
            font-size: clamp(40px, 7vw, 100px);
            font-weight: 900;
            line-height: 1;
            color: #1a1a1a;
            letter-spacing: 2px;
            margin-bottom: 50px;
        }
        .about_slogan .big_words span {
            display: block;
        }
        .about_slogan .cn_slogan {
            font-size: clamp(20px, 2.5vw, 32px);
            font-weight: 400;
            line-height: 1.8;
            color: #333;
            letter-spacing: 2px;
        }
        .about_slogan .cn_slogan p {
            margin-bottom: 8px;
        }

        /* ===== 板块6：联系板块 ===== */
        .about_contact {
            position: relative;
            background: #fff;
            padding: 100px 60px 120px;
            display: flex;
            align-items: center;
        }
        .about_contact .left {
            flex: 1;
        }
        .about_contact .left .title {
            font-size: clamp(36px, 6vw, 80px);
            font-weight: 800;
            line-height: 1.1;
            color: #1a1a1a;
            margin-bottom: 50px;
            letter-spacing: -1px;
        }
        .about_contact .left .title span {
            display: block;
        }
        .about_contact .right {
            text-align: center;
        }
        .about_contact .btns {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .about_contact .btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 36px;
            border: 1.5px solid #1a1a1a;
            border-radius: 40px;
            font-size: 16px;
            color: #1a1a1a;
            text-decoration: none;
            transition: all 0.3s;
            letter-spacing: 1px;
        }
        .about_contact .btn:hover {
            background: #1a1a1a;
            color: #fff;
        }
        .about_contact .center_line {
            flex: 1;
            height: 1.5px;
            background: #ddd;
            margin: 0 40px;
            min-width: 60px;
        }
        .about_contact .right_circle {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: #1a1a1a;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }
        .about_contact .right_circle .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ff5d59;
            margin-bottom: 8px;
        }
        .about_contact .right_circle .en {
            font-size: 11px;
            letter-spacing: 2px;
            color: #888;
            margin-bottom: 6px;
        }
        .about_contact .right_circle .cn {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 2px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .about_hero { padding: 100px 40px 60px; }
            .about_themes .themes_grid { gap: 40px; }
            .about_manifesto { padding: 100px 40px; }
            .about_slogan { padding: 80px 40px 100px; }
            .about_contact { padding: 80px 40px 100px; flex-wrap: wrap;}
            .about_contact .center_line { display: none; }
            .about_contact .right_circle { margin: 40px auto 0; }
        }
        @media (max-width: 768px) {
            .about_hero { padding: 90px 24px 50px; min-height: 90vh; }
            .about_hero .sprout_area { display: none; }
            .about_themes { padding: 80px 24px; }
            .about_themes .themes_grid {
                grid-template-columns: 1fr;
                gap: 50px;
            }
            .about_manifesto { padding: 80px 24px; }
            .about_slogan { padding: 60px 24px 80px; }
            .about_contact { padding: 60px 24px 80px;  display:block;  }
            .about_contact .btns { flex-direction: column; }
            .about_contact .btn { justify-content: center; }
            .about_contact .right_circle { width: 160px; height: 160px; }
        }
        @media (max-width: 390px) { 
        .about_manifesto .line .underline-right::after {
            left: 0;
        }
        }