/* ============================================================
   site.css — global-immersive (1XBET22-C19)
   影院式环球夜色设计系统：紫蓝夜空、星点纹理、全屏 hero、
   底部浮动 CTA dock、暗玻璃沉浸卡、浸没式 FAQ。
   ============================================================ */

:root {
    --night-1: #1b1140;
    --night-2: #0b1d3a;
    --night-3: #070a24;
    --ink: #050718;
    --paper: #eef1ff;
    --mist: #aab4e6;
    --violet: #8a6cff;
    --blue: #4f9bff;
    --line: rgba(178, 187, 255, 0.16);
    --line-soft: rgba(178, 187, 255, 0.09);
    --glass: rgba(19, 22, 58, 0.6);
    --glass-hot: rgba(31, 35, 88, 0.72);
    --main-grad: linear-gradient(135deg, #4f9bff 0%, #7c6bff 52%, #a06bff 100%);
    --shadow-deep: 0 30px 80px rgba(3, 5, 24, 0.55);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        "Noto Sans CJK SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.85;
    color: var(--paper);
    background:
        radial-gradient(1100px 560px at 82% -8%, rgba(79, 155, 255, 0.16), transparent 62%),
        radial-gradient(900px 520px at 6% 4%, rgba(138, 108, 255, 0.14), transparent 58%),
        linear-gradient(158deg, var(--night-1) 0%, var(--night-2) 58%, var(--night-3) 100%);
    background-attachment: fixed;
    overflow-x: clip;
}

/* 星点浮层：像夜航时的窗外光点 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        radial-gradient(rgba(235, 240, 255, 0.5) 1px, transparent 1.4px),
        radial-gradient(rgba(190, 200, 255, 0.28) 1px, transparent 1.6px);
    background-size: 31px 31px, 47px 47px;
    background-position: 0 0, 13px 21px;
    opacity: 0.35;
}

::selection {
    background: rgba(124, 107, 255, 0.45);
    color: #ffffff;
}

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

a {
    color: inherit;
    text-decoration: none;
}

p {
    margin: 0 0 1em;
}

h1, h2, h3, h4 {
    margin: 0;
    line-height: 1.3;
    font-weight: 700;
}

/* ---------- 通用容器与章节 ---------- */

.wrap {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

.band {
    padding: 92px 0 0;
}

.section-head {
    max-width: 760px;
    margin-bottom: 44px;
}

.section-head .eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    padding: 5px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: #c9d2ff;
    font-size: 13px;
    letter-spacing: 0.12em;
}

.section-head h3 {
    font-size: clamp(26px, 3.4vw, 40px);
    letter-spacing: 0.02em;
}

.section-head p {
    margin: 14px 0 0;
    color: var(--mist);
    font-size: 16px;
}

/* 章节间的“镜头切换”：交替使用更深的衬底段落 */
.band-deep {
    background: linear-gradient(180deg, rgba(9, 11, 40, 0.55), rgba(7, 8, 28, 0.35));
    border-block: 1px solid var(--line-soft);
}

/* ---------- 悬浮导航：半透明，滚动后加深 ---------- */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 70;
    background: linear-gradient(180deg, rgba(7, 9, 30, 0.62), rgba(7, 9, 30, 0));
    transition: background 0.35s ease, border-color 0.35s ease;
    border-bottom: 1px solid transparent;
}

.site-header.is-solid {
    background: rgba(7, 9, 30, 0.88);
    border-bottom-color: var(--line-soft);
    backdrop-filter: blur(12px);
}

.header-in {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 72px;
}

.header-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.header-brand .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--main-grad);
    color: #fff;
    font-size: 16px;
    box-shadow: 0 8px 22px rgba(90, 100, 255, 0.35);
}

/* 桌面导航：hover 浮出“浅色蒙版”二级视觉层 */
.nav-list {
    display: flex;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.fly-host {
    position: relative;
}

.fly-host > a {
    display: block;
    padding: 26px 12px 24px;
    font-size: 15px;
    color: #dbe2ff;
    border-radius: 10px 10px 0 0;
    transition: color 0.2s ease, background 0.2s ease;
}

.fly-host > a:hover,
.fly-host > a[aria-current="page"] {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.fly-host > a .nav-dot {
    opacity: 0;
}

.fly-panel {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 252px;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 0 16px 16px 16px;
    background: linear-gradient(180deg, rgba(235, 240, 255, 0.1), rgba(235, 240, 255, 0.04));
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-deep);
    display: none;
}

.fly-host:last-child .fly-panel,
.fly-host:nth-last-child(2) .fly-panel {
    left: auto;
    right: 0;
    border-radius: 16px 0 16px 16px;
}

.fly-host:hover .fly-panel,
.fly-host:focus-within .fly-panel {
    display: block;
}

.fly-panel a {
    display: flex;
    gap: 10px;
    align-items: baseline;
    padding: 9px 10px;
    border-radius: 10px;
    font-size: 14px;
    color: #f2f5ff;
    white-space: nowrap;
}

.fly-panel a:hover {
    background: rgba(255, 255, 255, 0.09);
}

.fly-panel a i {
    color: #9db4ff;
    font-size: 12px;
    min-width: 16px;
    transform: translateY(-1px);
}

.menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
}

/* ---------- 全屏沉浸 hero（独立于 main 的第一幕） ---------- */

.cinema-hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    overflow: hidden;
}

.hero-media {
    position: absolute;
    inset: 0;
    background: #0a0c28;
}

.hero-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 28%;
}

.hero-shade {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(7, 9, 30, 0.72) 0%, rgba(18, 12, 52, 0.2) 34%, rgba(13, 24, 60, 0.25) 62%, rgba(7, 9, 28, 0.92) 100%);
}

.hero-core {
    position: relative;
    z-index: 2;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 128px 20px 24px;
}

.hero-text {
    margin: auto 0 0;
    max-width: 920px;
}

.hero-title {
    font-size: clamp(34px, 6vw, 74px);
    font-weight: 800;
    letter-spacing: 0.03em;
    line-height: 1.18;
    background: linear-gradient(180deg, #ffffff 10%, #cdd8ff 88%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 60px rgba(120, 130, 255, 0.35);
}

.hero-sub {
    margin: 22px auto 0;
    max-width: 660px;
    color: #d6ddff;
    font-size: clamp(15px, 1.9vw, 18px);
}

.cover-topics {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 44px 0 18px;
}

.cover-topics span {
    padding: 6px 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(10, 13, 42, 0.45);
    color: #e6ebff;
    font-size: 14px;
}

/* 底部浮动 CTA dock */
.cta-dock {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(9, 12, 38, 0.55);
    backdrop-filter: blur(14px);
    box-shadow: 0 18px 50px rgba(3, 5, 24, 0.5);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 999px;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn i {
    font-size: 0.9em;
}

.btn-main {
    padding: 16px 30px;
    background: var(--main-grad);
    color: #ffffff;
    box-shadow: 0 12px 30px rgba(96, 96, 255, 0.42);
}

.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 40px rgba(124, 107, 255, 0.55);
}

.btn-ghost {
    padding: 16px 30px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    color: #ffffff;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-plain {
    padding: 12px 24px;
    border: 1px solid var(--line);
    color: #dfe5ff;
    background: rgba(255, 255, 255, 0.04);
}

.btn-plain:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero-hint {
    margin-top: 22px;
    color: rgba(235, 240, 255, 0.8);
    font-size: 20px;
    animation: hint-float 2.2s ease-in-out infinite;
}

@keyframes hint-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(7px); }
}

/* ---------- 大图沉浸卡（全宽） ---------- */

.scene-card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 30px;
    box-shadow: var(--shadow-deep);
}

.scene-card .frame {
    position: absolute;
    inset: 0;
}

.scene-card .frame::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(200deg, rgba(12, 10, 40, 0.1) 20%, rgba(6, 8, 26, 0.82) 88%);
}

.frame img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.9s cubic-bezier(0.2, 0.6, 0.2, 1);
}

.scene-card + .scene-card {
    margin-top: 24px;
}

.scene-card:hover .frame img {
    transform: scale(1.045);
}

.scene-card .card-copy {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 420px;
    padding: clamp(24px, 4vw, 52px);
}

.card-chip {
    align-self: flex-start;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--line);
    font-size: 13px;
    color: #dce3ff;
    margin-bottom: 16px;
}

.scene-card h4 {
    max-width: 680px;
    font-size: clamp(24px, 3vw, 36px);
    color: #ffffff;
}

.scene-card p {
    max-width: 640px;
    margin: 12px 0 0;
    color: #dfe4ff;
}

/* ---------- 横向对开卡（图 + 说明） ---------- */

.split-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(20px, 3.4vw, 40px);
    align-items: stretch;
    margin-top: 26px;
}

.split-row .split-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(20px, 3vw, 40px);
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
}

.split-row h4 {
    font-size: clamp(21px, 2.6vw, 30px);
    color: #ffffff;
}

.split-row .split-tag {
    color: #aab4ff;
    font-size: 13px;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

.split-row .frame {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--line);
}

.point-list {
    display: grid;
    gap: 10px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.point-list li {
    display: flex;
    gap: 10px;
    align-items: baseline;
    color: #dde3ff;
    font-size: 15px;
}

.point-list li::before {
    content: "";
    flex: 0 0 auto;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6f8bff, #a06bff);
    transform: translateY(-2px);
}

.split-row:nth-of-type(2n) {
    margin-top: 20px;
}

/* ---------- 版本说明：段落 + 事实卡 dl ---------- */

.edition-prose {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    margin-bottom: 40px;
}

.edition-prose p {
    margin: 0;
    color: #dde3ff;
}

.fact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.fact-card {
    padding: 24px 26px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: linear-gradient(160deg, rgba(27, 17, 64, 0.5), rgba(11, 29, 58, 0.35));
}

.fact-card dt {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ffffff;
    font-size: 18px;
    font-weight: 700;
}

.fact-card dt i {
    color: #9db4ff;
    width: 22px;
    text-align: center;
}

.fact-card dd {
    margin: 10px 0 0;
    color: var(--mist);
    font-size: 15px;
}

/* ---------- 任务区（福利仅界面说明） ---------- */

.quest-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 26px;
    align-items: stretch;
}

.quest-list {
    display: grid;
    gap: 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.quest-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    padding: 18px 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
}

.quest-row .quest-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(124, 107, 255, 0.16);
    border: 1px solid rgba(157, 180, 255, 0.35);
    color: #c3ccff;
    font-size: 18px;
}

.quest-row strong {
    display: block;
    color: #ffffff;
    font-size: 16px;
}

.quest-row span {
    color: var(--mist);
    font-size: 14px;
}

.quest-row em {
    font-style: normal;
    font-size: 13px;
    color: #9db4ff;
    white-space: nowrap;
}

.quest-panel .frame {
    position: relative;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid var(--line);
    aspect-ratio: 4 / 5;
    min-height: 320px;
}

/* ---------- 访客声音（示例留言） ---------- */

.voice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.voice-card {
    position: relative;
    padding: 26px 28px 22px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
}

.voice-card .mark {
    position: absolute;
    top: 14px;
    right: 20px;
    color: rgba(157, 180, 255, 0.4);
    font-size: 30px;
}

.voice-card p {
    color: #dde3ff;
    font-size: 15px;
}

.voice-card cite {
    display: block;
    color: #93a0d8;
    font-size: 13px;
    font-style: normal;
}

/* ---------- 浸没式 FAQ ---------- */

.faq-list {
    display: grid;
    gap: 14px;
    max-width: 940px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--line);
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
    overflow: hidden;
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px 24px;
    color: #ffffff;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: #c3ccff;
    font-size: 18px;
    transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
    background: rgba(124, 107, 255, 0.2);
}

.faq-item .faq-body {
    padding: 0 24px 22px;
    color: #ccd3f8;
    font-size: 15px;
}

/* ---------- 终场 CTA（dock 风格大卡） ---------- */

.final-card {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: clamp(44px, 7vw, 84px) clamp(20px, 5vw, 64px);
    border: 1px solid rgba(160, 170, 255, 0.3);
    border-radius: 34px;
    background:
        radial-gradient(600px 240px at 50% 0%, rgba(124, 107, 255, 0.28), transparent 70%),
        linear-gradient(160deg, #241654, #12244e);
}

.final-card h3 {
    color: #ffffff;
    font-size: clamp(24px, 3.4vw, 38px);
}

.final-card p {
    max-width: 620px;
    margin: 14px auto 0;
    color: #cdd4fa;
}

.final-card .final-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 30px;
}

/* ---------- 页脚：深紫黑四列 ---------- */

.site-foot {
    margin-top: 110px;
    background: linear-gradient(180deg, rgba(9, 11, 34, 0.9), #06081d);
    border-top: 1px solid var(--line-soft);
    position: relative;
    z-index: 1;
}

.foot-top {
    display: grid;
    grid-template-columns: 1.25fr repeat(3, minmax(0, 1fr));
    gap: 34px;
    padding: 58px 0 44px;
}

.foot-brandline {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
}

.foot-brand {
    font-weight: 800;
    font-size: clamp(18px, 2vw, 23px);
    color: #ffffff;
    letter-spacing: 0.02em;
    overflow-wrap: anywhere;
}

.foot-note {
    margin: 0;
    color: #8d98cd;
    font-size: 14px;
}

.foot-col h5 {
    margin: 0 0 16px;
    color: #ffffff;
    font-size: 15px;
    letter-spacing: 0.1em;
}

.foot-col a {
    display: block;
    margin: 9px 0;
    color: #a7b0e0;
    font-size: 14px;
    overflow-wrap: anywhere;
}

.foot-col a:hover {
    color: #ffffff;
}

.foot-friend a {
    margin: 7px 0;
}

.foot-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    justify-content: space-between;
    align-items: center;
    padding: 22px 0 26px;
    border-top: 1px solid var(--line-soft);
    color: #7e88bd;
    font-size: 13px;
}

/* 内页通用开篇 */

.page-veil {
    position: relative;
    z-index: 1;
    padding: 156px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--line-soft);
    background:
        radial-gradient(720px 300px at 50% 0%, rgba(79, 155, 255, 0.14), transparent 70%);
}

.page-veil h2 {
    font-size: clamp(30px, 4.6vw, 52px);
    color: #ffffff;
    letter-spacing: 0.03em;
}

.page-veil p {
    max-width: 720px;
    margin: 18px auto 0;
    color: var(--mist);
}

/* 内容内页段落与窄栏 */

.lead-narrow {
    max-width: 720px;
    margin: 0 auto 46px;
    color: #dde3ff;
}

.story-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(22px, 4vw, 46px);
    align-items: center;
    margin-bottom: 30px;
}

.story-row .frame {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: 26px;
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-deep);
}

.story-row h3 {
    font-size: clamp(22px, 2.8vw, 32px);
    color: #ffffff;
}

.story-row p {
    color: #d8defb;
}

.story-row .story-kicker {
    display: inline-block;
    margin-bottom: 12px;
    padding: 4px 13px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: #b9c3ff;
    font-size: 13px;
}

.story-plain {
    margin: 6px 0 26px;
    padding: 34px clamp(20px, 4vw, 44px);
    border: 1px solid var(--line);
    border-radius: 26px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
}

.story-plain h3 {
    font-size: clamp(22px, 2.8vw, 32px);
    color: #ffffff;
}

.story-plain p {
    max-width: 780px;
    margin: 12px 0 0;
    color: #d8defb;
}

.gold-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.gold-strip li {
    padding: 22px 24px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
}

.gold-strip strong {
    display: block;
    color: #ffffff;
    margin-bottom: 8px;
}

.gold-strip span {
    color: var(--mist);
    font-size: 14px;
}

.feature-card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: var(--shadow-deep);
}

.feature-card + .feature-card {
    margin-top: 30px;
}

.feature-card .frame {
    position: absolute;
    inset: 0;
}

.feature-card .frame::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(200deg, rgba(13, 10, 44, 0.05) 30%, rgba(6, 8, 26, 0.9) 96%);
}

.feature-card .card-copy {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: clamp(360px, 48vw, 500px);
    padding: clamp(22px, 4vw, 48px);
}

.feature-card .card-copy h3 {
    color: #ffffff;
    font-size: clamp(21px, 2.7vw, 30px);
    max-width: 640px;
}

.feature-card .card-copy p {
    max-width: 660px;
    margin: 10px 0 0;
    color: #e0e5ff;
}

.note-line {
    display: inline-block;
    margin: 0 0 12px;
    padding: 3px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    font-size: 12px;
    letter-spacing: 0.1em;
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.topic-grid li {
    padding: 22px 24px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.topic-grid h4 {
    color: #ffffff;
    font-size: 17px;
}

.topic-grid p {
    margin: 8px 0 0;
    color: var(--mist);
    font-size: 14px;
}

/* 实时内容墙三列 */

.live-wall {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.live-col {
    padding: 22px 20px 16px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
}

.live-col h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ffffff;
    font-size: 17px;
    margin-bottom: 6px;
}

.live-col h4 i {
    color: #9db4ff;
}

.live-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 14px;
    padding: 13px 2px;
    border-top: 1px dashed var(--line-soft);
}

.live-row strong {
    font-size: 15px;
    color: #e8ecff;
    font-weight: 600;
}

.live-row span {
    color: #9ba5d9;
    font-size: 13px;
    grid-column: 1;
}

.live-badge {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
    padding: 3px 10px;
    border: 1px solid rgba(157, 180, 255, 0.4);
    border-radius: 999px;
    color: #b9c8ff;
    font-size: 12px;
    white-space: nowrap;
}

/* 夜间支持台窄栏 */

.desk-narrow {
    max-width: 820px;
    margin: 0 auto;
    text-align: left;
}

.welcome-card {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr);
    gap: 26px;
    align-items: center;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: 26px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
}

.welcome-card .frame {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--line);
}

.welcome-copy .story-kicker {
    display: inline-block;
    margin-bottom: 12px;
    padding: 4px 13px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: #b9c3ff;
    font-size: 13px;
}

.welcome-copy h3 {
    color: #ffffff;
    font-size: clamp(21px, 2.6vw, 28px);
}

.welcome-copy p {
    margin: 12px 0 18px;
    color: #dde3ff;
}

.actions-start {
    justify-content: flex-start;
}

.desk-faq {
    margin-top: 26px;
}

.center-cta {
    text-align: center;
    margin-top: 56px;
}

.center-cta h3 {
    color: #ffffff;
    font-size: clamp(22px, 3vw, 32px);
}

.center-cta p {
    color: var(--mist);
    max-width: 560px;
    margin: 12px auto 0;
}

.center-cta .final-actions {
    margin-top: 24px;
}

/* ---------- 响应式：375 / 768 / 1440 ---------- */

@media (max-width: 1023px) {
    .split-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .split-row .frame {
        aspect-ratio: 16 / 9;
    }

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

    .quest-panel {
        grid-template-columns: minmax(0, 1fr);
    }

    .quest-panel .frame {
        aspect-ratio: 16 / 9;
        min-height: 0;
    }

    .story-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .story-row .frame {
        aspect-ratio: 16 / 9;
        max-width: 640px;
        width: 100%;
    }

    .story-row.media-right .frame {
        order: -1;
    }

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

@media (max-width: 767px) {
    .site-header.is-solid {
        background: rgba(7, 9, 30, 0.94);
    }

    .menu-btn {
        display: inline-flex;
    }

    .nav-list {
        display: none;
        flex-direction: column;
        gap: 2px;
        padding: 8px 0 16px;
        border-top: 1px solid var(--line-soft);
    }

    .site-header.open .nav-list {
        display: flex;
    }

    .fly-host > a {
        padding: 12px 6px;
        border-radius: 10px;
    }

    .fly-panel {
        position: static;
        display: block;
        min-width: 0;
        margin: 0 0 8px 14px;
        padding: 6px 0 6px 12px;
        border: 0;
        border-left: 1px solid var(--line);
        border-radius: 0;
        background: none;
        box-shadow: none;
    }

    .band {
        padding: 64px 0 0;
    }

    .edition-prose {
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
    }

    .voice-grid,
    .topic-grid,
    .live-wall,
    .gold-strip {
        grid-template-columns: minmax(0, 1fr);
    }

    .feature-card .card-copy {
        min-height: 300px;
    }

    .scene-card .card-copy {
        min-height: 330px;
    }

    .welcome-card {
        grid-template-columns: minmax(0, 1fr);
    }

    .welcome-card .frame {
        aspect-ratio: 4 / 3;
        max-width: 420px;
    }

    .btn-main,
    .btn-ghost {
        padding: 13px 18px;
        font-size: 15px;
    }

    .foot-top {
        grid-template-columns: minmax(0, 1fr);
        gap: 24px;
    }

    .site-foot {
        margin-top: 76px;
    }
}

@media (min-width: 1440px) {
    .wrap {
        max-width: 1280px;
    }

    .hero-title {
        letter-spacing: 0.06em;
    }
}