/* ==========================================
   style.css — 页面内容区域专属样式
   ========================================== */

/* ========== Partners / Database Logos ========== */
.partners {
    padding: 60px 0;
    background: #02093a;
    overflow: hidden;
}

.partners h6 {
    color: hsla(0,0%,100%,.35);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: .02em;
    margin-bottom: 28px;
}
.logo-scroll {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;
}
.logo-track {
    display: flex;
    gap: 48px;
    width: max-content;
    flex-shrink: 0;
}
.logo-track-left {
    animation: scrollLeft 60s linear infinite;
}
.logo-track-right {
    animation: scrollRight 55s linear infinite;
}
.logo-item {
    display: inline-flex;
    align-items: center;
    height: 26px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: .01em;
    color: hsla(0,0%,100%,.35);
    white-space: nowrap;
    flex-shrink: 0;
    transition: color .3s cubic-bezier(.22,1,.36,1);
}
.logo-item:hover {
    color: hsla(0,0%,100%,.7);
}

@keyframes scrollLeft {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
@keyframes scrollRight {
    0%   { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* ==========================================
   AI Reading — 调研到成稿，AI 全程协同
   ========================================== */
.ai-reading {
    scroll-margin-top: 80px;
    padding: 100px 0;
    background: #fff;
}
/* Left-right split */
.feat-split {
    display: flex;
    gap: 60px;
    align-items: flex-start;
}

/* Left: tabs */
.feat-tabs {
    max-width: 380px;
    display: flex;
    flex-direction: column;
}
.feat-tab {
    display: block;
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    border-left: 3px solid #e5e7eb;
    padding: 18px 20px;
    border-radius: 0;
    cursor: pointer;
    transition: all .3s ease;
    font-family: inherit;
}
.feat-tab:hover {
    background: #f6f5f4;
}
.feat-tab.feat-tab-active {
    border-left-color: #0075de;
    background: #f9f9f8;
}
.feat-tab-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: #0075de;
    margin-bottom: 6px;
    transition: color .3s;
}
.feat-tab-active .feat-tab-label {
    color: #0075de;
}
.feat-tab-title {
    display: block;
    font-size: 1.15rem;
    font-weight: 700;
    color: #111;
    line-height: 1.4;
}
.feat-tab-desc {
    display: block;
    font-size: .92rem;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 12px;
    font-size: 13.5px;
}
.feat-tab-bullets {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.feat-tab-bullets li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: #4b5563;
    line-height: 1.5;
}
.feat-tab-bullets li i {
    color: #0075de;
    font-size: 13px;
    margin-top: 3px;
    flex-shrink: 0;
}
/* Hide description + bullets on inactive tabs */
.feat-tab:not(.feat-tab-active) .feat-tab-desc,
.feat-tab:not(.feat-tab-active) .feat-tab-bullets {
    display: none;
}

/* Right: preview */
.feat-preview {
    flex: 1;
    min-width: 0;
    position: sticky;
    top: 100px;
}
.feat-preview-aura {
    position: absolute;
    inset: -20px;
    background: radial-gradient(ellipse at 50% 40%,rgba(99,102,241,.08),transparent 65%);
    pointer-events: none;
    z-index: 0;
}
.feat-preview-img {
    display: none;
    position: relative;
    z-index: 1;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,.08), 0 8px 20px rgba(0,0,0,.08);
    border: 1px solid rgba(0,0,0,.08);
    aspect-ratio: 16 / 10;
}
.feat-preview-img.feat-preview-img-active {
    display: block;
}
.feat-preview-img img {
    position: absolute;
    inset: 12px 12px 0 12px;
    width: calc(100% - 24px);
    height: calc(100% - 24px);
    object-fit: contain;
    object-position: top center;
    opacity: 0;
    transform: scale(1.015);
    transition: opacity .5s cubic-bezier(.22,1,.36,1), transform .65s cubic-bezier(.22,1,.36,1);
    pointer-events: none;
    filter: drop-shadow(0 4px 20px rgba(0,0,0,.12));
    border-radius: 8px;
}
.feat-preview-img.feat-preview-img-active img {
    opacity: 1;
    transform: scale(1);
}
/* Responsive */
@media (max-width: 991.98px) {
    .feat-split {
        flex-direction: column;
        gap: 40px;
    }
    .feat-preview {
        position: static;
    }
}

/* ==========================================
   Core Capabilities — 核心能力
   ========================================== */
.capabilities {
    scroll-margin-top: 80px;
    padding: 100px 0;
    background: #f6f5f4;
}

/* Header */
.cap-header {
    max-width: 640px;
    margin: 0 auto 48px;
    text-align: left !important;
}
.cap-eyebrow {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #0075de;
    margin-bottom: 10px;
}
.cap-title {
    font-size: clamp(34px,4.2vw,56px);
    font-weight: 700;
    letter-spacing: -.045em;
    color: rgba(0,0,0,.95);
    margin-bottom: 0;
    line-height: 1.08;
}
.cap-desc {
    max-width: 620px;
    margin: 14px 0 0;
    font-size: 16px;
    line-height: 1.65;
    color: rgba(0,0,0,.6);
}

/* Cards grid — flex wrap row */
.cap-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 0 auto;
    justify-content: center;
}

/* Card base — vertical layout */
.cap-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 20px 16px;
    border-radius: 14px;
    background: #fff;
    text-decoration: none;
    transition: all .25s ease;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
    width: calc(20% - 10px);
    min-width: 170px;
    flex-shrink: 0;
    position: relative;
}
.cap-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
    transform: translateY(-2px);
}

/* Icon — centered top */
.cap-card-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--tint-color, #0075de) 16%, #fff);
    color: var(--tint-color, #0075de);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--tint-color, #0075de) 18%, transparent);
    margin-bottom: 18px;
}

/* Text — centered */
.cap-card-text {
    width: 100%;
    display: flex;
    flex-direction: column;
}
.cap-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.25;
}
.cap-card-sub {
    font-size: .82rem;
    color: #8b8a8a;
    line-height: 1.4;
    margin-top: 4px;
}

/* Arrow — bottom-right */
.cap-card-arrow {
    align-self: flex-end;
    margin-top: 10px;
    color: #c4c4c4;
    font-size: 1rem;
    transition: transform .25s ease, color .25s ease;
}
.cap-card:hover .cap-card-arrow {
    color: #8b8a8a;
    transform: translateX(3px);
}

/* "即将推出" badge — bottom-right */
.cap-card-soon {
    align-self: flex-end;
    margin-top: 10px;
    font-size: .72rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(0,0,0,.04);
    color: #8b8a8a;
    white-space: nowrap;
}

/* Disabled card */
.cap-card-disabled {
    cursor: default;
    opacity: .85;
}
.cap-card-disabled:hover {
    transform: none;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}

/* --- Color tints --- */
/* Blue */
.cap-tint-blue {
    --tint-color: #3B82F6;
}
/* Orange */
.cap-tint-orange {
    --tint-color: #F59E0B;
}
/* Red */
.cap-tint-red {
    --tint-color: #EF4444;
}
/* Gray */
.cap-tint-gray {
    --tint-color: #6B7280;
}
/* Purple (dark card) */
.cap-tint-purple {
    --tint-color: #8B5CF6;
}
.cap-card-dark {
    background: radial-gradient(120% 90% at 20% 0,rgba(106,163,255,.24),transparent 58%),linear-gradient(180deg,#07134d,#02083b);
    border-color: transparent;
    color: #fff;
    position: relative;
}
.cap-card-dark::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 24px;
    background: radial-gradient(80% 60% at 30% 20%,rgba(106,163,255,.22),transparent);
    pointer-events: none;
}
.cap-card-dark .cap-card-title {
    color: #fff;
    position: relative;
    z-index: 1;
}
.cap-card-dark .cap-card-sub {
    color: rgba(255,255,255,.5);
    position: relative;
    z-index: 1;
}
.cap-card-dark .cap-card-arrow {
    color: rgba(255,255,255,.3);
    position: relative;
    z-index: 1;
}
.cap-card-dark:hover .cap-card-arrow {
    color: rgba(255,255,255,.6);
}

/* Responsive */
@media (max-width: 768px) {
    .cap-cards {
        flex-direction: column;
        align-items: stretch;
    }
    .cap-card {
        width: 100%;
    }
    .cap-title { font-size: 1.8rem; }
}

/* ========== Select-and-Ask Section ========== */
.select-ask {
    padding: 100px 0;
    background: #fff;
    overflow: hidden;
}

/* Title */
.section-title-xl {
    font-size: clamp(36px,5vw,64px);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -.04em;
    color: rgba(0,0,0,.95);
    text-align: left;
    margin-bottom: 60px;
}

/* Left / Right wrap */
.qa-wrap {
    display: flex;
    gap: 64px;
    align-items: center;
}

/* --- Left Column --- */
.qa-left {
    flex: 0 0 480px;
    max-width: 480px;
    position: sticky;
    top: 100px;
}
.qa-left-desc {
    font-size: 26px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 32px;
}
.qa-steps {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 36px;
}
.qa-steps span {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 500;
    color: #64748b;
}
.qa-steps span svg {
    flex-shrink: 0;
    color: #0075de;
    width: 18px;
    height: 18px;
}
.qa-left-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 19px;
    font-weight: 600;
    color: #0075de;
    text-decoration: none;
    transition: gap .25s;
}
.qa-left-link:hover { gap: 10px; color: #0075de; }

/* --- Right Column --- */
.qa-right {
    position: relative;
    flex: 1;
    min-width: 0;
}
.qa-right::before {
    content: "";
    position: absolute;
    top: 51%;
    right: -10px;
    left: auto;
    bottom: auto;
    width: 560px;
    height: 440px;
    transform: translateY(-50%);
    border-radius: 32px;
    background: radial-gradient(480px 340px at 50% 50%,rgba(18,132,255,.12),transparent 68%),linear-gradient(180deg,rgba(246,248,252,.8),hsla(0,0%,100%,0));
    pointer-events: none;
    z-index: 0;
}
.qa-right > * {
    position: relative;
    z-index: 1;
}

/* Paper card */
.qa-paper {
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.qa-paper-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 14px 20px;
    background: #f8f9fb;
    border-bottom: 1px solid #e5e7eb;
    font-size: 13px;
    color: #94a3b8;
}
.qa-paper-toolbar span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #e5e7eb;
}
.qa-paper-toolbar span:nth-child(1) { background: #ef4444; }
.qa-paper-toolbar span:nth-child(2) { background: #f59e0b; }
.qa-paper-toolbar span:nth-child(3) { background: #10b981; }
.qa-paper-toolbar strong {
    margin-left: 8px;
    font-weight: 600;
    color: #1e293b;
}
.qa-paper-body {
    padding: 20px 24px;
}
.qa-paper-body p {
    font-size: 13px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 14px;
}
.qa-paper-body p:last-child { margin-bottom: 0; }

/* Highlighted paragraph */
.qa-paper-highlight {
    position: relative;
    background: rgba(99,102,241,.06);
    border-radius: 8px;
    padding: 12px 16px !important;
    border-left: 3px solid #0075de;
}

/* Selection bubble */
.qa-selection-bubble {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    position: absolute;
    right: 12px;
    top: -12px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg,#0075de,#8b5cf6);
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(99,102,241,.3);
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
}
.qa-selection-bubble:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 14px rgba(99,102,241,.4);
}

/* --- Chat bubble --- */
.qa-chat {
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.qa-chat-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid #f1f5f9;
    background: #fafbfc;
}
.qa-chat-title {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: #0f172a;
}
.qa-chat-title svg { color: #0075de; }
.qa-chat-head svg:last-child { color: #f59e0b; }

.qa-chat-body {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.qa-chat-msg {
    font-size: 14px;
    font-weight: 500;
    color: #1e293b;
    background: #f1f5f9;
    padding: 10px 14px;
    border-radius: 12px 12px 4px 12px;
    align-self: flex-end;
    max-width: 88%;
}
.qa-chat-msg-light {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: #0075de;
    font-weight: 500;
    align-self: flex-start;
}
.qa-chat-answer {
    font-size: 14px;
    line-height: 1.6;
    color: #334155;
    background: #0075de;
    color: #fff;
    padding: 12px 16px;
    border-radius: 12px 12px 12px 4px;
    align-self: flex-start;
    max-width: 88%;
}

.qa-chat-footer {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 4px;
    align-self: flex-start;
}
.qa-chat-footer svg {
    color: #94a3b8;
    cursor: pointer;
    transition: color .2s;
}
.qa-chat-footer svg:hover { color: #64748b; }
.qa-chat-footer-fb {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #94a3b8;
    font-weight: 500;
    cursor: pointer;
    transition: color .2s;
}
.qa-chat-footer-fb:hover { color: #94a3b8; }

/* Responsive */
@media (max-width: 991px) {
    .qa-wrap {
        flex-direction: column;
        gap: 40px;
    }
    .qa-left {
        flex: none;
        max-width: 100%;
        position: static;
    }
}

/* ========== Feature Grid (2×2 all-work cards) ========== */
.feature-grid {
    padding: 100px 0;
    background: #fff;
}
.all-work-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 16px;
    margin: 0 auto;
}

/* Card base */
.all-work-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-decoration: none;
    border-radius: 20px;
    padding: 28px;
    border: 1px solid rgba(0,0,0,.06);
    transition: transform .35s cubic-bezier(.22,1,.36,1), box-shadow .35s cubic-bezier(.22,1,.36,1);
    cursor: pointer;
    position: relative;
    height: 260px;
}
.all-work-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,.08);
}

/* Card text content — left-aligned */
.all-work-card-top {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.all-work-eye {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: rgba(0,0,0,.45);
    margin-bottom: 8px;
}
.all-work-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.25;
    color: #1a1a2e;
    margin-bottom: 6px;
}
.all-work-sub {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(0,0,0,.55);
    margin-bottom: 10px;
}

/* Arrow — black circle */
.all-work-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #1a1a2e;
    color: #fff;
    transition: background .25s, transform .25s;
    flex-shrink: 0;
}
.all-work-card:hover .all-work-arrow {
    background: #000;
    transform: scale(1.06);
}
.arrow-inner {
    font-size: 14px;
    line-height: 1;
    display: block;
}

/* Card emoji — centered bottom */
.all-work-card-img {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    align-self: center;
}
.all-work-emoji {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.all-work-emoji img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    display: block;
}

/* --- Color variants — all light backgrounds with dark accent --- */
 .all-work-teal {
     background: #d1f5f2;
 }
 .all-work-white {
     background: #ffffff;
 }
 .all-work-brown {
     background: #f5ede4;
 }
 .all-work-blue {
     background: #ddeeff;
 }

/* Responsive */
@media (max-width: 640px) {
    .all-work-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Trust Section ========== */
.trust-section {
    scroll-margin-top: 80px;
    padding: 100px 0 60px;
    background: #f6f5f4;
    overflow: hidden;
    position: relative;
}
.trust-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.trust-inner .section-title-xl {
    margin-bottom: 56px;
}

/* Featured figure — left quote + right visual */
.trust-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 20px;
    position: relative;
    background-color: #fff;
    min-height: 220px;
    border-radius: 16px;
    border: 1px solid rgba(0,0,0,.05);
}

/* Left: Quote */
.trust-featured-quote {
    padding: 44px 48px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    justify-content: center;
}
.trust-logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: rgba(0,0,0,.95);
    font-family: Times New Roman,serif;
}
.trust-featured-text {
    font-size: 22px;
    line-height: 1.4;
    color: rgba(0,0,0,.95);
    font-weight: 600;
    margin: 0;
    font-style: normal;
}
.trust-featured-cta {
    font-size: 15px;
    font-weight: 500;
    color: #0075de;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .3s;
    width: fit-content;
}
.trust-featured-cta:hover {
    gap: 10px;
    color: #4338CA;
}

/* Right: Visual Orbit */
.trust-visual {
    position: relative;
    width: 100%;
    max-width: 557px;
    margin-left: auto;
    margin-right: 0;
    min-height: 320px;
    overflow: hidden;
    background: radial-gradient(320px 240px at 50% 46%,rgba(18,132,255,.24),transparent 68%),radial-gradient(260px 180px at 84% 14%,rgba(94,92,230,.18),transparent 70%),linear-gradient(135deg,#f7fbff,#eaf4ff 48%,#f9fbff);
    isolation: isolate;
    border-radius: 0 16px 16px 0;
}
.trust-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 280px;
    height: 280px;
    transform: translate(-50%,-50%);
    border-radius: 50%;
    border: 1px dashed rgba(79,70,229,.15);
    pointer-events: none;
}
.trust-node {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid rgba(79,70,229,.12);
    color: #0075de;
    box-shadow: 0 4px 12px rgba(0,0,0,.06);
    animation: trustNodeFloat 4s ease-in-out infinite;
    pointer-events: none;
}
.trust-node-a {
    top: 12%;
    left: 18%;
    animation-delay: 0s;
}
.trust-node-b {
    top: 58%;
    left: 12%;
    animation-delay: .6s;
}
.trust-node-c {
    top: 30%;
    right: 12%;
    animation-delay: 1.2s;
}

/* Center card */
.trust-center-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    background: #fff;
    border-radius: 16px;
    padding: 20px 20px 16px;
    width: 210px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,0,0,.08);
    border: 1px solid rgba(0,0,0,.04);
    z-index: 2;
}
.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    color: #0075de;
    background: rgba(79,70,229,.08);
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 8px;
}
.trust-center-card strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
}
.trust-center-card p {
    font-size: 12px;
    line-height: 1.5;
    color: rgba(0,0,0,.5);
    margin: 0 0 10px;
}
.trust-metrics {
    display: flex;
    justify-content: center;
    gap: 12px;
}
.trust-metrics span {
    font-size: 11px;
    color: rgba(0,0,0,.45);
}
.trust-metrics b {
    color: #1a1a2e;
    font-weight: 700;
}

/* Chips */
.trust-chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 500;
    color: rgba(0,0,0,.55);
    background: #fff;
    border: 1px solid rgba(0,0,0,.06);
    padding: 5px 12px;
    border-radius: 20px;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
    pointer-events: none;
}
.trust-chip svg {
    color: #0075de;
    flex-shrink: 0;
}
.trust-chip-a {
    bottom: 8%;
    left: 50px;
}
.trust-chip-b {
    bottom: 24%;
    right: 2%;
}
.trust-chip-c {
    top: 6%;
    right: 12%;
}

/* Trust card grid (6 cards, 3 columns) */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}
.trust-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-decoration: none;
    background: #fff;
    border-radius: 12px;
    padding: 22px 24px;
    border: 1px solid transparent;
    transition: border-color .3s, box-shadow .3s, transform .3s;
    cursor: pointer;
}
.trust-card:hover {
    border-color: rgba(79,70,229,.15);
    box-shadow: 0 4px 16px rgba(0,0,0,.04);
    transform: translateY(-2px);
}
.trust-card-logo {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .02em;
    color: #0075de;
}
.trust-card-text {
    font-size: 14px;
    line-height: 1.6;
    color: #1a1a2e;
    margin: 0;
    font-style: italic;
}
.trust-card-arrow {
    display: inline-block;
    font-size: 14px;
    color: #0075de;
    margin-left: 4px;
    transition: margin-left .3s;
}
.trust-card:hover .trust-card-arrow {
    margin-left: 8px;
}

/* Float animation */
@keyframes trustNodeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* Responsive */
@media (max-width: 860px) {
    .trust-featured {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .trust-visual {
        height: 320px;
    }
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 540px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
    .trust-chip {
        display: none;
    }
    .trust-node {
        display: none;
    }
}

.text-center {
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    color: hsla(0,0%,100%,.5);
    margin: 0 0 24px;
}
.ai-reading-title {
    font-size: clamp(36px,5vw,64px);
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.15;
    color: #111;
    text-align: left !important;
}
.navbar {
    background-color: transparent;
}
    .nav-link {
    color: #fff;
}
.navbar .nav-link:hover {
    color: #fff !important;
    background-color: rgba(255,255,255,.18);
    border-radius: 6px;
}
.navbar .nav-link:active,
.navbar .nav-link:focus,
.navbar .nav-link:focus-visible {
    color: #fff !important;
}
.navbar .nav-link.active {
    font-weight: 600;
}

/* ==========================================
   News Module — 学术资讯
   ========================================== */
.news-section {
    padding: 60px 0;
    background: #fff;
    border-bottom: 1px solid #f5f5f5;
}
.news-section .row {
    display: flex;
    flex-wrap: wrap;
}

/* Header with title + more link */
.news-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    align-items: flex-end;
}
.news-header2 {
    height: 36px;
}
.news-header h3 {
    font-size: 30px;
    font-weight: 700;
    color: #2b2651;
    margin: 0;
}
.news-sidebar .news-header h3 {
    font-size: 20px;
}
.news-more {
    font-size: 14px;
    color: #94a3b8;
    text-decoration: none;
    transition: color .25s;
}
.news-more:hover {
    color: #0075de;
}

/* News grid — 3 columns */
.news-grid {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -8px;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}
.news-grid > [class*="col-"] {
    padding: 0 8px;
    margin-bottom: 16px;
}

/* News card */
.news-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    transition: box-shadow .3s ease, transform .3s ease;
    height: 100%;
}
.news-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
    transform: translateY(-2px);
}
.news-card a {
    display: flex;
    flex-direction: column;
    padding: 16px;
    text-decoration: none;
    color: inherit;
    height: 100%;
}
.news-card-title {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a2e;
    line-height: 1.5;
    margin: 0 0 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card:hover .news-card-title {
    color: #0075de;
}
.news-card-desc {
    font-size: 13px;
    color: #94a3b8;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.news-date {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    color: #94a3b8;
}

/* FAQ list */
.news-faq-list {
    list-style: none;
    padding: 0;
    margin: 0;
    margin-top: 16px;
    padding: 10px 20px;
    background-color: #f4f9ff;
    border-radius: 6px;
    border: solid 1px #bedeff;
    min-height: 356px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
}
.news-faq-list li {
    max-width: 100%;
}
.news-grid .no-data,
.news-faq-list .no-data {
    color: #94a3b8;
    font-size: 14px;
    padding: 20px;
    text-align: center;
}
.news-faq-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    text-decoration: none;
    color: #475569;
    font-size: 13.5px;
    line-height: 1.5;
    transition: color .25s;
}
.news-faq-list a:hover {
    color: #0075de;
}
.news-faq-list a p {
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
.news-faq-list a .time {
    flex-shrink: 0;
    margin-left: 8px;
    font-size: 12px;
    color: #94a3b8;
}

/* Responsive */
@media (max-width: 991.98px) {
    .news-section .row > [class*="col-"] {
        width: 100%;
    }
    .news-sidebar {
        margin-top: 30px;
    }
}
@media (max-width: 767.98px) {
    .news-grid > [class*="col-"] {
        width: 50%;
    }
}
@media (max-width: 540px) {
    .news-grid > [class*="col-"] {
        width: 100%;
    }
    .news-card-desc {
        -webkit-line-clamp: 2;
    }
}