/* ==========================================
   style.css — Turnitin 项目样式
   整合导航栏 + Hero 主视觉样式
   ========================================== */

/* ========== CSS Variables ========== */
:root {
    --primary-blue: #2D6AFF;
    --primary-blue-dark: #1e4bd2;
    --accent-green: #10B981;
    --accent-orange: #F97316;
    --bg-light: #F8FAFE;
    --card-white: #FFFFFF;
    --text-dark: #0F172A;
    --text-muted: #475569;
    --border-light: #E9EEF3;
    --shadow-sm: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.01);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f9fafc;
    color: #1e293b;
    line-height: 1.5;
    scroll-behavior: smooth;
    font-size: 16px;
}

/* ==========================================
   NAVBAR — 导航栏
   ========================================== */
.navbar {
    height: 64px;
    padding: 0;
    background: transparent !important;
    border-bottom: 1px solid transparent;
    transition: background .3s ease, box-shadow .3s ease;
    position: fixed !important;
    top: 0;
    z-index: 1030;
    width: 100%;
}
.navbar.scrolled {
    background: hsla(0,0%,100%,.88) !important;
    box-shadow: 0 1px 20px rgba(0,0,0,.06);
    border-bottom-color: rgba(0,0,0,.04);
    backdrop-filter: blur(8px);
}
.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}
.navbar-brand .brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    -webkit-text-fill-color: #fff;
}
.navbar-brand span {
    color: #4F46E5;
    -webkit-text-fill-color: #4F46E5;
}

/* Nav links */
.nav-item {
    position: relative;
}
.nav-link {
    font-weight: 500;
    color: rgba(0,0,0,.95) !important;
    margin: 0 4px;
    padding: 8px 12px !important;
    font-size: 14px;
    border-radius: 8px;
    transition: all .25s ease;
}
.nav-link:hover {
    color: rgba(0,0,0,.95) !important;
    background: rgba(0,0,0,.04);
}
.nav-link.active {
    color: rgba(0,0,0,.95) !important;
}

/* Dropdown — navbar 产品菜单 */
.navbar .dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    color: rgba(0,0,0,.95) !important;
}
.navbar .dropdown-toggle::after {
    display: none !important;
}
.dropdown-caret {
    transition: transform .25s ease;
}
.dropdown-mega:hover .dropdown-caret {
    transform: rotate(180deg);
}

/* Mega menu — hover 触发 */
.dropdown-mega {
    position: relative;
}
.dropdown-mega-menu {
    position: absolute !important;
    left: 340px;
    transform: translateX(-50%) translateY(20px) !important;
    top: 120%;
    width: 680px;
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,.06);
    box-shadow: 0 20px 48px rgba(0,0,0,.1);
    padding: 16px;
    background: #fff;
    opacity: 0;
    visibility: hidden;
    display: block !important;
    pointer-events: none;
    transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
    margin-top: 0 !important;
}
/* 隐形桥接 — 鼠标从按钮移到菜单不会消失 */
.dropdown-mega-menu::before {
    content: "";
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    height: 20px;
    background: transparent;
}
.dropdown-mega:hover .dropdown-mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0) !important;
    pointer-events: auto;
}

/* Mega grid — 3 col × 2 rows */
.mega-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}
.mega-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 12px;
    text-decoration: none;
    transition: background .2s;
}
.mega-item:hover {
    background: rgba(0,0,0,.04);
}
.mega-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(79,70,229,.08);
    color: #4F46E5;
    display: flex;
    align-items: center;
    justify-content: center;
}
.mega-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.mega-title {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a2e;
    line-height: 1.3;
}
.mega-desc {
    font-size: 12px;
    color: #94a3b8;
    line-height: 1.4;
    margin-top: 1px;
}

/* Navbar buttons */
.navbar .btn-outline-light-nav {
    border: 1.5px solid rgba(255,255,255,.25);
    color: #fff;
    font-weight: 500;
    font-size: 14px;
    padding: 6px 20px;
    border-radius: 50px;
    background: transparent;
    transition: all .25s ease;
}
.navbar .btn-outline-light-nav:hover {
    border-color: rgba(255,255,255,.6);
    color: #fff;
    background: rgba(255,255,255,.08);
}
.navbar.scrolled .btn-outline-light-nav {
    border-color: #CBD5E1;
    color: #333;
}
.navbar.scrolled .btn-outline-light-nav:hover {
    border-color: #4F46E5;
    color: #4F46E5;
    background: rgba(0,0,0,.05);
}

/* Mobile navbar */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(255,255,255,.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: 12px;
        padding: 16px;
        margin-top: 12px;
        box-shadow: 0 10px 40px rgba(0,0,0,.08);
        border: 1px solid #F1F5F9;
    }
    .nav-link {
        padding: 12px 16px !important;
        border-radius: 8px;
        color: #333 !important;
    }
    .nav-link::after { display: none; }
    .navbar .d-flex.gap-2 {
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid #F1F5F9;
    }
    .navbar .d-flex.gap-2 .btn {
        flex: 1;
        text-align: center;
    }
    .dropdown-mega-menu {
        position: static !important;
        width: 100% !important;
        transform: none !important;
        box-shadow: none;
        border: none;
        padding: 0;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    .mega-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================
   SECTION — 产品展示 (product-view)
   复刻 "将学术诚信作为评估的核心" 左网格右图
   ========================================== */
.product-view {
    background-color: #fff;
}
.product-view .container-only-left {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
    padding: 60px 0;
    background-color: #003c46;
    padding: 3rem;
    padding-top: 6rem;
}
.product-view .container-only-left > div:first-child {
    display: flex;
    align-items: flex-end;
    gap: 32px;
}
.product-view .product-tile-heading {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    margin: 0 0 12px;
    letter-spacing: -0.02em;
}
.product-view .product-tile-sub-heading {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #fff;
    margin: 0;
}
.product-view .col-padding-left {
    padding-left: 0;
}
.product-view .product-tile-container {
    gap: 0;
}
.product-view .product-tile {
    padding: 20px 16px;
}
.product-view .product-tile a {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}
.product-view .tile-image img {
    height: 48px;
    width: auto;
}
.product-view .product-tile .heading {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin: 0;
    line-height: 1.4;
}
.product-view .product-tile .description {
    font-size: 0.88rem;
    line-height: 1.6;
    color: #ffff;
    margin: 8px 0 0;
    width: 60%;
}
.product-view .product-link {
    margin-top: 12px;
}
.product-view .learn-more {
    font-size: 0.88rem;
    font-weight: 600;
    color: #fff;
    position: relative;
    display: inline-block;
    transition: color .2s ease;
}
.product-view .learn-more::after {
    content: "→";
    margin-left: 4px;
    display: inline-block;
    transition: transform .2s ease;
}
.product-view .product-tile a:hover .learn-more {
    color: #0dffad;
}
.product-view .product-tile a:hover .learn-more::after {
    transform: translateX(4px);
}
.product-view .product-tile a:hover .heading {
    color: #fff;
    text-decoration: underline;
    text-decoration-color: #0dffad;
    text-underline-offset: 6px;
    text-decoration-thickness: 3px;
}
.product-view .responsive {
    display: block;
    max-width: 100%;
    height: auto;
}
.product-view .d-flex.justify-content-end .responsive {
    max-width: 100%;
    border-radius: 12px;
}
.product-view .product-bottom-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 991.98px) {
    .product-view .container-only-left > div:first-child {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}
@media (max-width: 767.98px) {
    .product-view {
        padding: 40px 0;
    }
    .product-view .product-tile {
        padding: 12px 0;
    }
    .product-view .product-tile-container {
        gap: 0;
    }
}

/* Hamburger icon */
.navbar-toggler {
    border: none;
    padding: 6px;
    border-radius: 8px;
    transition: background .2s;
}
.navbar-toggler:focus {
    box-shadow: none;
    background: rgba(79,70,229,.08);
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%234F46E5' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important;
}

/* ==========================================
   HERO — 主视觉
   ========================================== */
.hero-section {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #eef2ff 0%, #f8faff 40%, #ffffff 100%);
    overflow: hidden;
    text-align: center;
}

.ih-hero-inner {
    max-width: 780px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.ih-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: 0.3px;
}

.ih-hero-eyebrow svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.ih-hero-title {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    color: #0F172A;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
}

.ih-hero-tagline {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2563EB;
    margin: 0 0 12px;
    line-height: 1.5;
}

.ih-hero-lead {
    font-size: 1rem;
    color: #64748B;
    margin: 0 auto 28px;
    line-height: 1.7;
    max-width: 540px;
}

.ih-hero-ctas {
    display: flex;
    align-items: center;
    gap: 14px;
    justify-content: center;
}

.hero-section > .hero-mockup {
    margin: 60px auto 0;
    max-width: 900px;
}

.ih-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 13px 26px;
    background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(37,99,235,0.3);
    text-decoration: none;
}

.ih-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37,99,235,0.4);
    color: #ffffff;
}

.ih-cta-primary svg {
    width: 16px;
    height: 16px;
}

.ih-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 13px 26px;
    background: #f2f2f0;
    color: #363535;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid #dad9d9;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.ih-cta-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(54,53,53,0.1);
    color: #363535;
}

.ih-cta-secondary svg {
    width: 16px;
    height: 16px;
    color: #363535;
}

/* Carousel controls */
.hero-section .carousel-control-prev-icon,
.hero-section .carousel-control-next-icon {
    filter: invert(40%) sepia(0%) saturate(0%) brightness(40%);
}

#heroCarousel {
    position: relative;
}
#heroCarousel .carousel-inner .hero-mockup-img {
    height: 100%;
    object-fit: cover;
}
#heroCarousel .carousel-control-prev {
    left: -66px;
    width: 40px;
    height: 40px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    opacity: 1;
}
#heroCarousel .carousel-control-next {
    right: -66px;
    width: 40px;
    height: 40px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    opacity: 1;
}
#heroCarousel .carousel-control-prev:hover,
#heroCarousel .carousel-control-next:hover {
    background: rgba(255,255,255,.3);
}

.hero-mockup .mockup-wrapper {
    position: relative;
    padding: 6px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(91,127,255,.25), rgba(0,212,255,.12));
}

.hero-mockup-img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 10px;
    background: rgba(255,255,255,.03);
}

/* ==========================================
   SECTION — 图文混合内容 (AI 写作检测方案)
   复刻 Turnitin 官网 .section-text-media-cta
   ========================================== */
.section-text-media-cta {
    background: #ffffff;
}
.section-text-media-cta .text-media-cta-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}
.section-text-media-cta .cover-container {
    display: flex;
    align-items: center;
}
.section-text-media-cta .left-col {
    padding: 40px 0;
}
.section-text-media-cta .text-media-content {
    max-width: 540px;
}
.section-text-media-cta .cover-heading h2 {
    font-size: clamp(2.125rem, 2vw + 1rem, 3rem);
    line-height: 1.3;
    color: #0F172A;
    margin: 0 0 20px;
    letter-spacing: -0.02em;
}
.section-text-media-cta .cover-heading p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #64748B;
    margin: 0 0 28px;
}
.section-text-media-cta .common-cta {
    margin-top: 8px;
}
.section-text-media-cta .link_cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    position: relative;
    transition: all .25s ease;
}
.section-text-media-cta .link_cta.font-dark-green {
    color: #15803D;
}
.section-text-media-cta .link_cta.font-dark-green:hover {
    color: #166534;
}
.section-text-media-cta .cta-button-arrow::after {
    content: "→";
    display: inline-block;
    transition: transform .25s ease;
    font-size: 1.2rem;
    line-height: 1;
}
.section-text-media-cta .cta-button-arrow:hover::after {
    transform: translateX(4px);
}

/* Right column — carousel / image */
.section-text-media-cta .carousel-text-media {
    padding: 20px 0;
}
.section-text-media-cta .carousel-text-media .img-responsive {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Responsive */
 @media (max-width: 767.98px) {
     .section-text-media-cta {
         padding: 48px 0;
     }
     .section-text-media-cta .cover-container {
         flex-direction: column-reverse;
     }
     .section-text-media-cta .left-col {
         padding: 24px 0;
     }
     .section-text-media-cta .text-media-content {
         max-width: 100%;
     }
     .section-text-media-cta .carousel-text-media {
         padding: 0;
     }
 }

/* ==========================================
   SECTION — Keyline 标题区域
   复刻 "学生的成功从这里开始" 标题
   ========================================== */
.section-keyline-title {
    background: #ffffff;
}
.section-keyline-title .headline-four-alternative {
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.3;
    color: #0F172A;
    margin: 0;
    letter-spacing: -0.02em;
    display: inline-block;
    position: relative;
    padding-top: 20px;
}
.section-keyline-title .keyline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 4px;
    border-radius: 2px;
}
.section-keyline-title .keyline-blue::before {
    background: #2563EB;
}

@media (max-width: 767.98px) {
    .section-keyline-title {
        padding: 40px 0 12px;
    }
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 768px) {
    .hero-section { padding: 80px 0 40px; text-align: center; gap: 30px; }
    .ih-hero-inner { max-width: 100%; }
    .ih-hero-lead { max-width: 100%; }
    .ih-hero-ctas { flex-direction: column; }
    .ih-hero-ctas a { width: 100%; justify-content: center; }
    #heroCarousel .carousel-control-prev { left: -10px; }
    #heroCarousel .carousel-control-next { right: -10px; }
    #heroCarousel .carousel-inner { height: 260px; }
}

/* ==========================================
   SECTION — 三个图文卡片网格
   复刻 "维护学术诚信" / "新评估方式" / "培养原创性思维"
   ========================================== */
.section-cards-grid {
    padding: 0 0 60px;
    background: #ffffff;
}
.section-cards-grid .text-media-cta-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}
.section-cards-grid .cover-container {
    display: flex;
    align-items: center;
    padding: 20px 0;
}
.section-cards-grid .cover-heading h3 {
    font-size: clamp(1.875rem, 2vw + 1rem, 2.5rem);
    line-height: 1.3;
    color: #0F172A;
    margin: 0 0 30px;
    letter-spacing: -0.02em;
}
.section-cards-grid .cover-heading p {
    font-size: 1rem;
    line-height: 1.7;
    color: #64748B;
    margin: 0;
}
.section-cards-grid .left-col {
    padding: 20px 0;
}

.section-cards-grid .carousel-text-media .img-responsive {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

@media (max-width: 767.98px) {
    .section-cards-grid .cover-container {
        padding: 24px 0;
    }
    .section-cards-grid .cover-container.flex-row-reverse,
    .section-cards-grid .cover-container.x {
        flex-direction: column-reverse;
    }
    .section-cards-grid .left-col {
        padding: 12px 0;
    }
    .section-cards-grid .text-media-content {
        max-width: 100%;
    }
    .section-cards-grid .carousel-text-media {
        padding: 0;
    }
}

/* ==========================================
   SECTION — 客户故事 (petrol 青色背景)
   复刻 Turnitin 客户案例区域
   ========================================== */
.brand-color-background-petrol-10 .text-media-cta-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
    background-color: #eaf3f7;
}
.brand-color-background-petrol-10 .cover-container {
    display: flex;
    align-items: center;
}
.brand-color-background-petrol-10 .cover-container:first-child {
    padding: 60px 0 0;
}
.brand-color-background-petrol-10 .cover-container:last-child {
    padding: 0 0 60px;
}
.brand-color-background-petrol-10 .left-col {
    padding: 40px 0;
}
.brand-color-background-petrol-10 .text-media-content {
    max-width: 600px;
}
.brand-color-background-petrol-10 .cover-heading h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    color: #0F172A;
    margin: 0;
    letter-spacing: -0.02em;
    display: inline-block;
    position: relative;
    padding-top: 20px;
}
.brand-color-background-petrol-10 .cover-heading h3 {
    font-size: clamp(1.875rem, 2vw + 1rem, 2.5rem);
    line-height: 1.35;
    color: #0F172A;
    margin: 0 0 30px;
    letter-spacing: -0.02em;
}
.brand-color-background-petrol-10 .cover-heading p {
    font-size: 1rem;
    line-height: 1.7;
    color: #64748B;
    margin: 0 0 24px;
}
.brand-color-background-petrol-10 .keyline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 4px;
    border-radius: 2px;
}
.brand-color-background-petrol-10 .keyline-green::before {
    background: #15803D;
}
.brand-color-background-petrol-10 .common-cta {
    margin-top: 8px;
}
.brand-color-background-petrol-10 .link_cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all .25s ease;
}
.brand-color-background-petrol-10 .link_cta.font-dark-green {
    color: #15803D;
}
.brand-color-background-petrol-10 .link_cta.font-dark-green:hover {
    color: #166534;
}
.brand-color-background-petrol-10 .cta-button-arrow::after {
    content: "→";
    display: inline-block;
    transition: transform .25s ease;
    font-size: 1.2rem;
    line-height: 1;
}
.brand-color-background-petrol-10 .cta-button-arrow:hover::after {
    transform: translateX(4px);
}

.brand-color-background-petrol-10 .carousel-text-media .img-responsive {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

@media (max-width: 767.98px) {
    .brand-color-background-petrol-10 .cover-container:first-child {
        padding: 40px 0 0;
    }
    .brand-color-background-petrol-10 .cover-container:last-child {
        padding: 0 0 40px;
    }
    .brand-color-background-petrol-10 .cover-container.x {
        flex-direction: column-reverse;
    }
    .brand-color-background-petrol-10 .left-col {
        padding: 24px 0;
    }
    .brand-color-background-petrol-10 .text-media-content {
        max-width: 100%;
    }
    .brand-color-background-petrol-10 .carousel-text-media {
        padding: 0;
    }
}

/* ==========================================
   SECTION — 解决方案区域 (cta_media_wrapper)
   复刻 "为您量身定制的解决方案" 左图右列表
   ========================================== */
.cta_media_wrapper {
    background-color: #fff;
}
.cta_media_wrapper .content {
    background: #e5f4ff;
    max-width: 1600px;
    margin: auto;
    padding: 4% 6%;
    border-radius: 0;
}
.cta_media_wrapper .header-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px 40px;
}
.cta_media_wrapper .header-wrapper h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    color: #0F172A;
    margin: 0;
    letter-spacing: -0.02em;
    display: inline-block;
    position: relative;
    padding-top: 20px;
}
.cta_media_wrapper .keyline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 4px;
    border-radius: 2px;
}
.cta_media_wrapper .keyline-petrol::before {
    background: #0d9488;
}
.cta_media_wrapper .media-container {
    display: flex;
    align-items: center;
    gap: 48px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}
.cta_media_wrapper .media-img-container {
    flex: 0 0 50%;
    max-width: 50%;
}
.cta_media_wrapper .media-img-container .img-responsive {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 12px 40px -8px rgba(13, 148, 136, 0.15);
}
.cta_media_wrapper .media-links-container {
    flex: 0 0 50%;
    max-width: 50%;
}
.cta_media_wrapper .tile-text-cta {
    width: 100%;
}
.cta_media_wrapper .call_to_action_media_wrapper {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: 24px 24px;
    border-radius: 16px;
}
.cta_media_wrapper .cta-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}
.cta_media_wrapper .cta-icon-wrapper {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 148, 136, 0.08);
    border-radius: 16px;
}
.cta_media_wrapper .cta-icon-wrapper img {
    width: 40px;
    height: 40px;
}
.cta_media_wrapper .cta-text-wrapper {
    flex: 1;
    min-width: 0;
}
.cta_media_wrapper .cta-short-text {
    font-size: 32px;
    font-weight: 700;
    color: #0F172A;
    margin: 0 0 16px;
    line-height: 1.3;
    letter-spacing: -0.02em;
}
.cta_media_wrapper .cta-desc {
    font-size: 16px;
    line-height: 1.6;
    color: #475569;
    margin: 0;
}
.cta_media_wrapper .divider {
    height: 1px;
    background: linear-gradient(90deg, rgba(13, 148, 136, 0.15), rgba(13, 148, 136, 0.06) 60%, transparent);
    margin: 4px 24px;
}

@media (max-width: 991.98px) {
    .cta_media_wrapper .media-container {
        flex-direction: column;
        gap: 40px;
    }
    .cta_media_wrapper .media-img-container {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .cta_media_wrapper .media-links-container {
        flex: 0 0 100%;
        max-width: 100%;
    }
}
@media (max-width: 767.98px) {
    .cta_media_wrapper {
        padding: 32px 0;
    }
    .cta_media_wrapper .content {
        padding: 6% 4%;
    }
    .cta_media_wrapper .header-container {
        padding: 0 24px 28px;
    }
    .cta_media_wrapper .call_to_action_media_wrapper {
        padding: 16px 16px;
    }
    .cta_media_wrapper .cta-icon-wrapper {
        width: 52px;
        height: 52px;
    }
    .cta_media_wrapper .cta-icon-wrapper img {
        width: 28px;
        height: 28px;
    }
    .cta_media_wrapper .divider {
        margin: 0 16px;
    }
}

/* ==========================================
   SECTION — Turnitin 特色 (product-view-new)
   复刻 "产品亮点" 左网格右图区域
   ========================================== */
.product-view-new {
    padding: 60px 0;
    background: #fff;
}
.product-view-headline {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.product-view-headline .product-view-heading-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.product-view-headline .link_cta {
    padding: 1em 2em;
    margin: 1em 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    border: 2px solid #809ea3;
    border-radius: 4px;
    font-weight: 400;
    font-size: 14px;
    line-height: 24px;
    text-align: center;
    color: #003c46;
    transition: all .25s ease;
    flex-shrink: 0;
}
.product-view-headline .link_cta:hover {
    border-color: #5d7d83;
    color: #003c46;
}
.product-view-headline .cta-button-arrow::after {
    content: "→";
    display: inline-block;
    transition: transform .25s ease;
    font-size: 1.2rem;
    line-height: 1;
}
.product-view-headline .cta-button-arrow:hover::after {
    transform: translateX(4px);
}
.product-view-heading {
    font-size: clamp(1.875rem, 2vw + 1rem, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    color: #0F172A;
    margin: 0;
    letter-spacing: -0.02em;
}
.hr-light-green {
    display: block;
    width: 70px;
    height: 4px;
    background: #0dffad;
    border: none;
    border-radius: 2px;
    margin: 0;
    flex-shrink: 0;
    opacity: 1;
}
.product-view-new-content {
    display: flex;
    align-items: center;
    gap: 40px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}
.product-view-media-left .product-view-new-content {
    flex-direction: row-reverse;
}
.product-view-new-tiles-container {
    flex: 0 0 55%;
    max-width: 55%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    row-gap: 6.75rem;
}
.product-view-new-media-container {
    flex: 0 0 45%;
    max-width: 45%;
}
.product-view-new-media-container .img-responsive {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
}
.media-tile {
    padding: 28px 20px;
}
.media-tile .tile-image {
    margin-bottom: 16px;
}
.media-tile .tile-image img {
    width: auto;
}
.media-tile .product-tile-card-header {
    font-size: clamp(1.25rem, 1vw + 1rem, 1.5rem);
    color: #0F172A;
    margin: 0;
    line-height: 1.4;
    padding-bottom: 8px;
}
.media-tile .product-tile-card-details {
    font-size: 0.88rem;
    line-height: 1.65;
    color: #64748B;
    margin: 0;
    margin-top: 10px;
}

@media (max-width: 991.98px) {
    .product-view-new-content {
        flex-direction: column !important;
    }
    .product-view-new-tiles-container {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .product-view-new-media-container {
        flex: 0 0 100%;
        max-width: 80%;
    }
}
@media (max-width: 767.98px) {
    .product-view-new {
        padding: 40px 0;
    }
    .product-view-headline {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 0 24px 24px;
    }
    .product-view-new-tiles-container {
        grid-template-columns: 1fr;
    }
    .media-tile {
        padding: 20px 0;
    }
    .product-view-new-media-container {
        max-width: 100%;
    }
}

.keyline2 {
    padding-left: 6.5rem;
    margin-top: 1em;
    position: relative;
}
.keyline2::before {
    content: "";
    width: 70px;
    height: 4px;
    position: absolute;
    top: -30px !important;
    left: 6.5rem !important;
    background: #0dffad;
}
.tile-description {
    max-width: 220px;
}