/* =========================================================
   GYAOSHI // 主页样式
   视觉方向：赛博朋克 2077 × 攻壳机动队（HUD、扫描线、故障字）
   ========================================================= */

/* --- 1. 变量与重置 --- */
:root {
    --bg: #07070a;
    --bg-raise: #0c0c12;
    --panel: #0e0e15;
    --line: #1f1f2c;
    --line-hot: #3a3a52;
    --yellow: #fcee0a;
    --cyan: #00f0ff;
    --magenta: #ff2e7e;
    --text: #d8d8e3;
    --muted: #7d7d92;
    --mono: "Share Tech Mono", ui-monospace, Consolas, "Courier New", monospace;
    --sans: "Chakra Petch", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
    --max: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(1200px 600px at 50% -10%, rgba(252, 238, 10, 0.07), transparent 60%),
        radial-gradient(900px 500px at 90% 30%, rgba(0, 240, 255, 0.05), transparent 60%),
        var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* 网格地面效果 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.055) 1px, transparent 1px);
    background-size: 52px 52px;
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 80%);
    mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 80%);
    pointer-events: none;
    z-index: -1;
}

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

ul {
    list-style: none;
}

b {
    font-weight: 600;
}

::selection {
    background: var(--yellow);
    color: #000;
}

/* --- 2. 全屏特效层 --- */
.fx {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9000;
}

.fx-scan {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 0) 2px,
        rgba(0, 0, 0, 0.28) 3px,
        rgba(0, 0, 0, 0.28) 4px
    );
    opacity: 0.5;
}

.fx-noise {
    position: absolute;
    inset: -50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    opacity: 0.045;
    animation: noise-shift 0.6s steps(3) infinite;
}

.fx-sweep {
    position: absolute;
    left: 0;
    right: 0;
    height: 180px;
    background: linear-gradient(to bottom, transparent, rgba(0, 240, 255, 0.05) 45%, rgba(252, 238, 10, 0.07) 55%, transparent);
    animation: sweep 9s linear infinite;
}

.fx-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.75) 100%);
}

@keyframes noise-shift {
    0% { transform: translate(0, 0); }
    50% { transform: translate(-3%, 2%); }
    100% { transform: translate(2%, -2%); }
}

@keyframes sweep {
    0% { top: -200px; }
    100% { top: 110%; }
}

/* --- 3. 顶部 HUD --- */
.hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: 58px;
    padding: 0 clamp(1rem, 4vw, 2.5rem);
    background: rgba(7, 7, 10, 0.82);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 0.82rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hud::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 34%;
    height: 1px;
    background: linear-gradient(90deg, var(--yellow), transparent);
}

.hud-brand {
    font-family: var(--sans);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.24em;
    color: var(--yellow);
    text-shadow: 0 0 14px rgba(252, 238, 10, 0.4);
}

.cursor-blink {
    animation: blink 1s steps(2) infinite;
}

.hud-nav {
    display: flex;
    gap: clamp(0.8rem, 3vw, 2rem);
}

.hud-nav a {
    color: var(--muted);
    transition: color 0.2s, text-shadow 0.2s;
}

.hud-nav a:hover {
    color: var(--cyan);
    text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}

.hud-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--muted);
}

.hud-dot {
    width: 7px;
    height: 7px;
    background: #3dff9a;
    border-radius: 50%;
    box-shadow: 0 0 10px #3dff9a;
    animation: blink 1.6s ease-in-out infinite;
}

.hud-lang {
    display: flex;
    gap: 2px;
    padding: 2px;
    border: 1px solid var(--line-hot);
}

.hud-lang button {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    line-height: 1;
    padding: 0.35rem 0.5rem;
    background: transparent;
    border: 0;
    color: var(--muted);
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
}

.hud-lang button:hover {
    color: var(--cyan);
}

.hud-lang button[aria-pressed="true"] {
    background: var(--yellow);
    color: #08080a;
    font-weight: 700;
}

@keyframes blink {
    50% { opacity: 0.15; }
}

/* --- 4. 首屏 --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 7rem 1.5rem 4rem;
    overflow: hidden;
}

.hero-rain {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.42;
}

.hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 860px;
    text-align: center;
}

.hero-kicker {
    font-family: var(--mono);
    font-size: clamp(0.68rem, 1.6vw, 0.8rem);
    letter-spacing: 0.28em;
    color: var(--cyan);
    text-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
    margin-bottom: 1.4rem;
}

.glitch {
    position: relative;
    font-size: clamp(3.4rem, 14vw, 9rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    line-height: 0.95;
    color: #fff;
    text-shadow: 0 0 34px rgba(252, 238, 10, 0.28);
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.glitch::before {
    color: var(--cyan);
    mix-blend-mode: screen;
    transform: translate(-3px, 0);
    clip-path: inset(0 0 58% 0);
    animation: glitch-a 4s steps(2) infinite;
}

.glitch::after {
    color: var(--magenta);
    mix-blend-mode: screen;
    transform: translate(3px, 0);
    clip-path: inset(62% 0 0 0);
    animation: glitch-b 5.3s steps(2) infinite;
}

@keyframes glitch-a {
    0%, 88%, 100% { transform: translate(-3px, 0); opacity: 0.75; }
    90% { transform: translate(-9px, -2px); opacity: 1; }
    93% { transform: translate(6px, 2px); }
    96% { transform: translate(-4px, 1px); }
}

@keyframes glitch-b {
    0%, 86%, 100% { transform: translate(3px, 0); opacity: 0.7; }
    89% { transform: translate(10px, 2px); opacity: 1; }
    92% { transform: translate(-7px, -2px); }
    95% { transform: translate(5px, -1px); }
}

.hero-role {
    margin-top: 1.2rem;
    font-family: var(--mono);
    font-size: clamp(0.85rem, 2.4vw, 1.05rem);
    letter-spacing: 0.34em;
    color: var(--yellow);
    text-transform: uppercase;
}

.hero-role .sep {
    color: var(--muted);
}

.hero-desc {
    max-width: 620px;
    margin: 1.4rem auto 0;
    color: var(--muted);
    font-size: clamp(0.95rem, 2.2vw, 1.05rem);
}

.hero-desc b {
    color: var(--yellow);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2.4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 172px;
    padding: 0.9rem 1.8rem;
    font-family: var(--mono);
    font-size: 0.9rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: transform 0.18s, box-shadow 0.18s, background 0.18s, color 0.18s;
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.btn-primary {
    background: var(--yellow);
    color: #08080a;
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 34px rgba(252, 238, 10, 0.35);
}

.btn-ghost {
    border: 1px solid var(--line-hot);
    color: var(--cyan);
    background: rgba(0, 240, 255, 0.04);
}

.btn-ghost:hover {
    transform: translateY(-3px);
    background: rgba(0, 240, 255, 0.12);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.18);
}

.hero-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: clamp(1.5rem, 6vw, 4rem);
    margin-top: 3.4rem;
    padding-top: 1.8rem;
    border-top: 1px dashed var(--line-hot);
}

.hero-stats li {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.hero-stats b {
    font-family: var(--mono);
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    color: #fff;
    text-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
}

.hero-stats span {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    color: var(--muted);
}

.hero-corner {
    position: absolute;
    bottom: 34px;
    width: 74px;
    height: 74px;
    border: 1px solid var(--line-hot);
    z-index: 2;
}

.hero-corner-l {
    left: clamp(1rem, 4vw, 3rem);
    border-right: 0;
    border-top: 0;
}

.hero-corner-r {
    right: clamp(1rem, 4vw, 3rem);
    border-left: 0;
    border-top: 0;
}

/* --- 5. 跑马灯 --- */
.ticker {
    overflow: hidden;
    background: var(--yellow);
    color: #08080a;
    border-top: 1px solid #08080a;
    border-bottom: 1px solid #08080a;
    padding: 0.55rem 0;
}

.ticker-track {
    display: flex;
    width: max-content;
    white-space: nowrap;
    animation: marquee 34s linear infinite;
    font-family: var(--mono);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}