/* ================================================================
   翻译维汉助手 Official Landing V3 — fanyiwh.cn
   「技术手册 / 印刷品」风格 · 仅 index.php 引用
   纸色底 · 墨色硬边 · 朱红强调 · 等宽编号 · 宋体标题
   手工排版，谢绝模板感。
   ================================================================ */

/* ---- 00. reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
body {
    font-family: var(--sans);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--red); color: var(--paper); }
:focus-visible { outline: 2px dashed var(--red); outline-offset: 3px; }

/* ---- 01. tokens ---- */
:root {
    --paper: #f3efe5;
    --paper-2: #eae4d5;
    --paper-3: #e2dbc8;
    --ink: #1c1812;
    --ink-soft: #4d4636;
    --ink-mute: #8a8170;
    --line: #1c1812;
    --line-soft: #c8bfab;
    --red: #c23a17;
    --red-deep: #9e2c0e;
    --red-wash: #efd9cf;
    --coal: #181410;
    --coal-2: #221d16;
    --coal-line: #3d362a;
    --ok: #2f6b45;

    --serif: "Songti SC", "STSong", "STZhongsong", "Noto Serif CJK SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
    --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
    --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
    --font-ug: "UKIJTuzTom", "Noto Naskh Arabic", "Microsoft Uighur", serif;

    --shadow-hard: 6px 6px 0 var(--ink);
    --shadow-hard-sm: 4px 4px 0 var(--ink);
    --shadow-hard-red: 6px 6px 0 var(--red);
    --header-h: 66px;
}

/* ---- 02. 字体 ---- */
@font-face {
    font-family: 'UKIJTuzTom';
    src: url('/UKIJTuzTom.ttf') format('truetype');
    font-display: swap;
}

/* ---- 03. 通用 ---- */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); }
.rtl-text { direction: rtl; font-family: var(--font-ug); }
.rtl-text-inline { direction: rtl; unicode-bidi: isolate; font-family: var(--font-ug); }

/* 纸面格点：极淡的坐标纸 */
.graph-paper {
    background-image:
        linear-gradient(var(--line-soft) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 36px 36px;
}

/* 裁切角标（印刷裁线） */
.crop-marks { position: relative; }
.crop-marks::before, .crop-marks::after {
    content: '';
    position: absolute; width: 18px; height: 18px;
    pointer-events: none;
    background:
        linear-gradient(var(--ink), var(--ink)) 0 0 / 100% 2px no-repeat,
        linear-gradient(var(--ink), var(--ink)) 0 0 / 2px 100% no-repeat;
}
.crop-marks::before { top: -2px; left: -2px; }
.crop-marks::after {
    bottom: -2px; right: -2px;
    background:
        linear-gradient(var(--ink), var(--ink)) 100% 100% / 100% 2px no-repeat,
        linear-gradient(var(--ink), var(--ink)) 100% 100% / 2px 100% no-repeat;
}

/* ---- 04. 滚动进度 ---- */
.scroll-progress {
    position: fixed; top: 0; left: 0; right: 0; height: 3px;
    background: var(--red);
    transform-origin: 0 50%; transform: scaleX(0);
    z-index: 300; pointer-events: none;
}

/* ---- 05. 顶部工具条 ---- */
.utility-bar {
    background: var(--coal);
    color: #b3a88f;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .08em;
}
.utility-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 30px; gap: 16px;
}
.utility-inner .u-left { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.utility-inner .u-left b { color: var(--paper); font-weight: 600; }
.utility-inner .u-right { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.utility-dot {
    display: inline-block; width: 7px; height: 7px; background: #58a06a;
    box-shadow: 0 0 0 3px rgb(88 160 106 / .22); margin-right: 6px;
}
.u-sep { color: #55503f; }

/* ---- 06. 主导航 ---- */
.site-header {
    position: sticky; top: 0; z-index: 200;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 18px; }
.nav-brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.nav-seal {
    width: 38px; height: 38px;
    background: var(--red); color: var(--paper);
    font-family: var(--serif); font-size: 21px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    border-radius: 3px;
    transform: rotate(-3deg);
    box-shadow: 2.5px 2.5px 0 var(--ink);
    transition: transform .2s ease;
}
.nav-brand:hover .nav-seal { transform: rotate(3deg); }
.nav-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav-brand-name { font-family: var(--serif); font-size: 19px; font-weight: 900; letter-spacing: .02em; }
.nav-brand-sub { font-family: var(--mono); font-size: 10px; color: var(--ink-mute); letter-spacing: .14em; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    position: relative;
    padding: 7px 12px;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--ink-soft);
    transition: color .15s, background .15s;
}
.nav-links a .n-idx { color: var(--red); font-size: 10px; margin-right: 4px; vertical-align: 2px; }
.nav-links a:hover { color: var(--ink); background: var(--paper-2); }
.nav-links a.active { color: var(--ink); font-weight: 700; }
.nav-links a.active::after {
    content: '';
    position: absolute; left: 10px; right: 10px; bottom: 1px; height: 2px;
    background: var(--red);
}
.nav-actions { display: flex; align-items: center; gap: 10px; }

/* 语言切换 */
.lang-dropdown { position: relative; }
.lang-toggle {
    display: flex; align-items: center; gap: 7px;
    padding: 6px 11px;
    font-family: var(--mono); font-size: 12px; font-weight: 600;
    border: 1.5px solid var(--ink);
    background: var(--paper);
    color: var(--ink);
    transition: background .15s;
}
.lang-toggle:hover { background: var(--paper-2); }
.lang-toggle .caret { transition: transform .2s; }
.lang-dropdown.open .lang-toggle .caret { transform: rotate(180deg); }
.lang-menu {
    position: absolute; top: calc(100% + 6px); right: 0;
    min-width: 132px;
    background: var(--paper);
    border: 1.5px solid var(--ink);
    box-shadow: var(--shadow-hard-sm);
    display: none; z-index: 50;
}
.lang-dropdown.open .lang-menu { display: block; }
.lang-menu a {
    display: block; padding: 8px 12px;
    font-size: 13px;
    border-bottom: 1px solid var(--line-soft);
}
.lang-menu a:last-child { border-bottom: none; }
.lang-menu a:hover { background: var(--paper-2); }
.lang-menu a.active { color: var(--red); font-weight: 700; }
.lang-menu a.active::before { content: '▸ '; }

/* ---- 07. 按钮（机械按压感） ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    padding: 10px 20px;
    font-size: 14px; font-weight: 600; line-height: 1.4;
    border: 2px solid var(--ink);
    background: var(--paper); color: var(--ink);
    transition: transform .12s ease, box-shadow .12s ease, background .15s;
    user-select: none; white-space: nowrap;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: none; }
.btn-primary { background: var(--red); color: var(--paper); box-shadow: var(--shadow-hard-sm); }
.btn-primary:hover { box-shadow: 6px 6px 0 var(--ink); }
.btn-ink { background: var(--ink); color: var(--paper); box-shadow: 4px 4px 0 var(--red); }
.btn-outline { background: transparent; }
.btn-paper { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-paper:hover { box-shadow: 3px 3px 0 var(--ink); }
.btn-outline-paper { background: transparent; color: var(--paper); border-color: var(--paper); }
.btn-outline-paper:hover { box-shadow: 3px 3px 0 rgb(243 239 229 / .9); }
.btn-sm { padding: 6px 13px; font-size: 13px; }
.btn-lg { padding: 13px 26px; font-size: 15px; }
.btn-rounded { border-radius: 0; }

/* ---- 08. 移动端抽屉 ---- */
.menu-toggle {
    display: none;
    width: 40px; height: 40px;
    border: 1.5px solid var(--ink);
    align-items: center; justify-content: center;
}
.menu-toggle svg { width: 20px; height: 20px; }
.mobile-overlay {
    position: fixed; inset: 0; z-index: 400;
    background: rgb(24 20 16 / .55);
    opacity: 0; pointer-events: none;
    transition: opacity .25s ease;
}
.mobile-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-drawer {
    position: absolute; top: 0; right: 0; bottom: 0;
    width: min(310px, 86vw);
    background: var(--coal);
    color: var(--paper);
    padding: 20px;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform .28s cubic-bezier(.22,.61,.36,1);
}
.mobile-overlay.open .mobile-drawer { transform: translateX(0); }
.drawer-header {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 14px; margin-bottom: 10px;
    border-bottom: 1px solid var(--coal-line);
    font-family: var(--mono); font-size: 12px; letter-spacing: .12em; color: #b3a88f;
}
.drawer-close { font-size: 18px; color: var(--paper); width: 32px; height: 32px; border: 1px solid var(--coal-line); }
.mobile-nav-link {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 4px;
    font-size: 15px;
    border-bottom: 1px dashed var(--coal-line);
    color: #e8e1d0;
}
.mobile-nav-link::before { content: '→'; color: var(--red); font-family: var(--mono); font-size: 13px; }
.drawer-divider { height: 1px; background: var(--coal-line); margin: 14px 0; }
.drawer-actions { display: grid; gap: 10px; margin-top: 16px; }
.drawer-actions .btn-outline { border-color: var(--paper); color: var(--paper); }
html[dir="rtl"] .mobile-drawer { right: auto; left: 0; transform: translateX(-100%); }
html[dir="rtl"] .mobile-overlay.open .mobile-drawer { transform: translateX(0); }

/* ---- 09. 左侧竖排铭牌（宽屏装饰） ---- */
.side-rail {
    position: fixed; left: 14px; top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: var(--mono); font-size: 10px; letter-spacing: .42em;
    color: var(--ink-mute);
    z-index: 90;
    display: flex; align-items: center; gap: 12px;
    pointer-events: none;
}
.side-rail::before { content: ''; width: 1px; height: 54px; background: var(--ink-mute); }
.side-rail::after { content: ''; width: 1px; height: 54px; background: var(--ink-mute); }
@media (max-width: 1439px) { .side-rail { display: none; } }

/* ---- 10. HERO ---- */
.hero {
    position: relative;
    border-bottom: 2px solid var(--ink);
    background-image:
        linear-gradient(var(--line-soft) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 36px 36px;
    background-position: center top;
    overflow: hidden;
}
.hero::after {
    /* 压住格子的纸雾，保证正文对比度 */
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(105deg, rgb(243 239 229 / .96) 0%, rgb(243 239 229 / .86) 46%, rgb(243 239 229 / .55) 100%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
    padding: 64px 0 58px;
}
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--mono); font-size: 12px; letter-spacing: .1em;
    color: var(--red);
    border: 1px solid var(--red);
    padding: 4px 10px;
    background: rgb(194 58 23 / .06);
    margin-bottom: 22px;
}
.hero-eyebrow::before { content: '●'; font-size: 8px; animation: pulse-dot 2.2s infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

.hero-title {
    font-family: var(--serif);
    font-size: clamp(38px, 5.2vw, 62px);
    font-weight: 900;
    line-height: 1.18;
    letter-spacing: .01em;
    color: var(--ink);
}
.hero-mark {
    font-style: normal;
    position: relative;
    white-space: nowrap;
    background: linear-gradient(transparent 58%, var(--red-wash) 58%, var(--red-wash) 92%, transparent 92%);
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
    padding: 0 4px;
    border-bottom: 3px solid var(--red);
}
.hero-cursor {
    display: inline-block;
    width: .48em; height: .95em;
    background: var(--red);
    vertical-align: -.08em;
    margin-left: 6px;
    animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* 维吾尔语副题行 */
.hero-ug-line {
    margin-top: 14px;
    font-family: var(--font-ug);
    font-size: clamp(17px, 2vw, 22px);
    color: var(--ink-soft);
    direction: rtl;
}
.hero-ug-line .ug-annot {
    display: inline-block; direction: ltr;
    font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
    color: var(--ink-mute);
    border: 1px solid var(--line-soft);
    padding: 1px 7px;
    margin-right: 12px;
    vertical-align: 4px;
    background: var(--paper);
}
.hero-desc {
    margin-top: 18px;
    max-width: 560px;
    font-size: 16px;
    color: var(--ink-soft);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-points {
    display: flex; flex-wrap: wrap; gap: 8px 18px;
    margin-top: 24px;
    font-family: var(--mono); font-size: 12px; color: var(--ink-soft);
}
.hero-points .hero-point::before { content: '[✓] '; color: var(--red); }

/* 手写批注：指向试译台 */
.hero-note {
    display: none;
    position: absolute;
    right: 40px; top: -34px;
    font-family: var(--mono); font-size: 11px;
    color: var(--red);
    letter-spacing: .04em;
    transform: rotate(-2deg);
}
@media (min-width: 1025px) { .hero-note { display: block; } }

/* 终端行：打字机示例 */
.hero-type {
    display: inline-flex; align-items: baseline; flex-wrap: wrap; gap: 10px;
    margin-top: 22px;
    padding: 8px 14px;
    border: 1px solid var(--ink);
    border-left: 3px solid var(--red);
    background: var(--paper);
    font-family: var(--mono); font-size: 13.5px;
    color: var(--ink);
    max-width: 100%;
}
.hero-type-prompt { color: var(--ink-mute); }
.hero-type-prompt::after { content: ' ❯'; color: var(--red); }
.hero-type-item { min-width: 4.5em; }
.hero-type-arrow { color: var(--red); }
.hero-type-item--ug { font-family: var(--font-ug); font-size: 14.5px; }

/* ---- 11. 试译工作台 ---- */
.workbench-wrap { position: relative; }
.workbench {
    background: var(--paper);
    border: 2px solid var(--ink);
    box-shadow: 8px 8px 0 var(--ink);
}
.workbench-head {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--mono); font-size: 12px; letter-spacing: .06em;
}
.workbench-head .wb-code { color: var(--red); font-weight: 700; }
.workbench-head .wb-live {
    margin-left: auto;
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 10px; letter-spacing: .18em;
    color: #86c298;
}
.workbench-head .wb-live i { width: 6px; height: 6px; background: #58a06a; border-radius: 50%; animation: pulse-dot 1.6s infinite; }
.demo-chrome-title { font-weight: 600; }

.workbench-body { padding: 16px 16px 14px; }

.demo-dir { display: flex; align-items: stretch; gap: 8px; margin-bottom: 12px; }
.demo-dir-btn {
    flex: 1;
    padding: 8px 6px;
    font-family: var(--mono); font-size: 12px;
    border: 1.5px solid var(--ink);
    background: var(--paper);
    color: var(--ink-soft);
    transition: background .15s, color .15s;
}
.demo-dir-btn:hover { background: var(--paper-2); }
.demo-dir-btn.active { background: var(--ink); color: var(--paper); font-weight: 700; }
.demo-dir-btn.active .rtl-text-inline { color: #f0c9bd; }
.demo-dir-swap {
    width: 40px; flex: none;
    border: 1.5px solid var(--ink);
    display: flex; align-items: center; justify-content: center;
    background: var(--paper-2);
    transition: background .15s;
}
.demo-dir-swap:hover { background: var(--red-wash); }
.demo-dir-swap svg { width: 15px; height: 15px; }
.demo-dir-swap.spin { animation: spin-swap .45s ease; }
@keyframes spin-swap { from { transform: rotate(0); } to { transform: rotate(180deg); } }

.demo-input-wrap { position: relative; border: 1.5px solid var(--ink); background: #fbf9f3; }
.demo-input-wrap:focus-within { box-shadow: inset 0 0 0 1px var(--red); }
#demoInput {
    display: block; width: 100%;
    border: none; outline: none; resize: none;
    background: transparent;
    padding: 12px 12px 4px;
    font-family: var(--sans); font-size: 14.5px; line-height: 1.6;
    color: var(--ink);
    min-height: 84px;
}
#demoInput[dir="rtl"] { font-family: var(--font-ug); font-size: 16px; }
.demo-input-foot {
    display: flex; justify-content: space-between; align-items: center;
    padding: 4px 12px 8px;
    font-family: var(--mono); font-size: 11px; color: var(--ink-mute);
}
.demo-count.near-limit { color: var(--red); font-weight: 700; }

.demo-samples { margin-top: 10px; }
.demo-samples-label { font-family: var(--mono); font-size: 11px; color: var(--ink-mute); margin-right: 6px; }
.demo-samples-list { display: inline-flex; flex-wrap: wrap; gap: 6px; vertical-align: middle; }
.demo-chip {
    font-size: 12px;
    padding: 3px 9px;
    border: 1px solid var(--ink);
    background: var(--paper);
    color: var(--ink-soft);
    transition: background .12s, color .12s, transform .12s;
    max-width: 100%;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.demo-chip:hover { background: var(--red); border-color: var(--red); color: var(--paper); transform: translate(-1px, -1px); }
.demo-chip[dir="rtl"] { font-family: var(--font-ug); }

.demo-go {
    width: 100%; margin-top: 12px;
    position: relative;
    padding: 12px;
    font-size: 15px; font-weight: 700; letter-spacing: .28em; text-indent: .28em;
    background: var(--red); color: var(--paper);
    border: 2px solid var(--ink);
    box-shadow: var(--shadow-hard-sm);
    transition: transform .12s, box-shadow .12s;
}
.demo-go:hover { transform: translate(-1px, -1px); box-shadow: 6px 6px 0 var(--ink); }
.demo-go:active { transform: translate(2px, 2px); box-shadow: none; }
.demo-go:disabled { opacity: .75; cursor: wait; }
.demo-go-spinner {
    display: none;
    width: 14px; height: 14px;
    border: 2px solid rgb(243 239 229 / .4);
    border-top-color: var(--paper);
    border-radius: 50%;
    animation: spin .7s linear infinite;
    margin-left: 8px; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.demo-go.loading .demo-go-spinner { display: inline-block; }

.demo-out-wrap { margin-top: 12px; border: 1.5px solid var(--ink); background: var(--paper-2); }
.demo-out-head {
    display: flex; justify-content: space-between; align-items: center;
    padding: 6px 12px;
    border-bottom: 1px dashed var(--ink);
    font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--ink-soft);
}
.demo-copy {
    font-family: var(--mono); font-size: 11px;
    padding: 2px 9px;
    border: 1px solid var(--ink);
    background: var(--paper);
    transition: background .12s;
}
.demo-copy:hover { background: var(--paper-3); }
.demo-copy.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.demo-out {
    padding: 12px;
    min-height: 64px;
    font-size: 16px; line-height: 1.75;
    color: var(--ink);
    word-break: break-word;
}
.demo-out[dir="rtl"], .demo-out[dir="rtl"] * { font-family: var(--font-ug); }
.demo-out.is-loading::after {
    content: '▍▍▍';
    font-family: var(--mono);
    color: var(--ink-mute);
    animation: caret-bounce .8s infinite;
    letter-spacing: 2px;
}
@keyframes caret-bounce { 0%,100% { opacity: .25; } 50% { opacity: 1; } }
.demo-out.is-error { color: var(--red-deep); font-size: 14px; }
.demo-meta {
    padding: 0 12px 10px;
    font-family: var(--mono); font-size: 11px; color: var(--ink-mute);
}
.demo-meta span + span { margin-left: 0; }
.demo-foot { margin-top: 12px; font-size: 12.5px; text-align: center; }
.demo-foot a { color: var(--ink-soft); border-bottom: 1px dashed var(--ink-mute); padding-bottom: 1px; }
.demo-foot a:hover { color: var(--red); border-bottom-color: var(--red); }

/* ---- 12. 译例跑马灯 ---- */
.ticker {
    border-bottom: 2px solid var(--ink);
    background: var(--paper-2);
    overflow: hidden;
    position: relative;
}
.ticker::before, .ticker::after {
    content: '';
    position: absolute; top: 0; bottom: 0; width: 64px; z-index: 2;
    pointer-events: none;
}
.ticker::before { left: 0; background: linear-gradient(90deg, var(--paper-2), transparent); }
.ticker::after { right: 0; background: linear-gradient(-90deg, var(--paper-2), transparent); }
.ticker-track { display: flex; width: max-content; animation: ticker-move 36s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
@keyframes ticker-move { to { transform: translateX(-50%); } }
.ticker-group { display: flex; align-items: center; }
.ticker-item {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 11px 22px;
    font-family: var(--mono); font-size: 13px;
    color: var(--ink-soft);
    white-space: nowrap;
    border-right: 1px dashed var(--line-soft);
}
.ticker-item .t-zh { color: var(--ink); font-weight: 600; font-family: var(--sans); }
.ticker-item .t-arrow { color: var(--red); }
.ticker-item .t-ug { font-family: var(--font-ug); font-size: 14px; direction: rtl; }
.ticker-tag {
    padding: 11px 16px;
    font-family: var(--mono); font-size: 10px; letter-spacing: .22em;
    color: var(--paper); background: var(--ink);
    align-self: stretch; display: inline-flex; align-items: center;
    white-space: nowrap;
}

/* ---- 13. 章节头 ---- */
.section { padding: 76px 0; border-bottom: 1px solid var(--line-soft); }
.section-head {
    display: flex; align-items: flex-end; justify-content: space-between; gap: 20px;
    border-top: 3px solid var(--ink);
    padding-top: 14px;
    margin-bottom: 40px;
}
.section-no {
    font-family: var(--mono); font-size: 12px; letter-spacing: .16em;
    color: var(--red); font-weight: 700;
    display: block; margin-bottom: 8px;
}
.section-title {
    font-family: var(--serif);
    font-size: clamp(26px, 3.2vw, 38px);
    font-weight: 900;
    line-height: 1.25;
}
.section-subtitle { margin-top: 8px; color: var(--ink-soft); font-size: 15px; max-width: 640px; }
.section-en {
    font-family: var(--mono); font-size: 11px; letter-spacing: .3em;
    color: var(--ink-mute);
    white-space: nowrap; padding-bottom: 6px;
}
.section-head--left { flex-direction: column; align-items: flex-start; }

/* ---- 14. 统计账目 ---- */
.stats-strip { border-bottom: 2px solid var(--ink); background: var(--paper); }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat-cell {
    padding: 30px 26px 26px;
    border-right: 1px solid var(--line-soft);
    position: relative;
}
.stat-cell:last-child { border-right: none; }
.stat-cell .stat-k {
    font-family: var(--mono); font-size: 10px; letter-spacing: .2em;
    color: var(--ink-mute);
    display: block; margin-bottom: 10px;
}
.stat-value {
    font-family: var(--mono);
    font-size: clamp(30px, 3.4vw, 44px);
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--ink);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.stat-label { font-family: var(--serif); font-size: 16px; font-weight: 700; margin-top: 8px; }
.stat-desc { font-size: 12.5px; color: var(--ink-mute); margin-top: 3px; }
.stat-foot {
    border-top: 1px dashed var(--line-soft);
    padding: 9px 0;
    font-family: var(--mono); font-size: 11px; color: var(--ink-mute);
    display: flex; justify-content: space-between;
}

/* ---- 15. 功能清单（编辑排版式行条目） ---- */
.feat-list { border-top: 1px solid var(--ink); }
.feat-row {
    display: grid;
    grid-template-columns: 92px 1.05fr 1.5fr 150px;
    gap: 20px; align-items: baseline;
    padding: 22px 10px;
    border-bottom: 1px solid var(--ink);
    transition: background .15s;
    position: relative;
}
.feat-row:hover { background: var(--paper-2); }
.feat-no {
    font-family: var(--serif);
    font-size: 30px; font-weight: 900;
    color: var(--ink);
    line-height: 1;
    transition: color .15s;
}
.feat-row:hover .feat-no { color: var(--red); }
.feat-title { font-family: var(--serif); font-size: 19px; font-weight: 800; }
.feat-desc { font-size: 14.5px; color: var(--ink-soft); }
.feat-tag {
    justify-self: end;
    font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em;
    color: var(--ink-soft);
    border: 1px solid var(--ink);
    padding: 3px 8px;
    white-space: nowrap;
}
.feat-row:hover .feat-tag { background: var(--ink); color: var(--paper); }

/* ---- 16. 三步流程 ---- */
.steps-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 2px solid var(--ink);
    background: var(--paper);
    box-shadow: var(--shadow-hard);
}
.step-card { padding: 30px 28px 34px; position: relative; border-right: 1px solid var(--ink); }
.step-card:last-child { border-right: none; }
.step-top {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px;
}
.step-num {
    width: 44px; height: 44px;
    border: 2px solid var(--ink); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--serif); font-size: 19px; font-weight: 900;
    background: var(--paper);
    position: relative;
}
.step-card:nth-child(2) .step-num { background: var(--red-wash); }
.step-card:nth-child(3) .step-num { background: var(--red); color: var(--paper); }
.step-code { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--ink-mute); }
.step-title { font-family: var(--serif); font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--ink-soft); }
.step-dash {
    position: absolute; top: 51px; right: -14px; width: 26px;
    border-top: 2px dashed var(--ink);
    z-index: 2;
}
.step-card:last-child .step-dash { display: none; }

/* ---- 17. API 暗色工坊 ---- */
.api-section {
    background: var(--coal);
    color: #e6dfcd;
    border-bottom: 2px solid var(--ink);
    position: relative;
    overflow: hidden;
}
.api-section::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgb(230 223 205 / .045) 1px, transparent 1px),
        linear-gradient(90deg, rgb(230 223 205 / .045) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}
.api-section .container { position: relative; z-index: 1; }
.api-grid {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 52px;
    align-items: start;
    padding: 76px 0 66px;
}
.api-section .section-head { border-top-color: var(--paper); margin-bottom: 26px; }
.api-section .section-title { color: var(--paper); }
.api-section .section-en { color: #97907c; }
.api-section .section-no { color: #e88a6a; }
.api-section .section-subtitle { color: #b6ad97; }
.api-bullets { margin-top: 22px; display: grid; gap: 12px; }
.api-bullets li {
    display: flex; gap: 12px;
    font-size: 14.5px; color: #cdc4ae;
}
.api-bullet-check { color: var(--red); font-family: var(--mono); font-weight: 700; }
.api-bullet-check::before { content: '▸'; }
.api-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.api-protocol {
    margin-top: 30px;
    font-family: var(--mono); font-size: 11px; letter-spacing: .06em;
    color: #97907c;
    border-top: 1px dashed var(--coal-line);
    padding-top: 14px;
    display: flex; flex-wrap: wrap; gap: 6px 18px;
}
.api-protocol span::before { content: '· '; color: var(--red); }

/* 终端窗口 */
.code-window {
    border: 1px solid var(--coal-line);
    background: #100d09;
    box-shadow: 10px 10px 0 rgb(194 58 23 / .9);
}
.code-chrome {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px;
    background: var(--coal-2);
    border-bottom: 1px solid var(--coal-line);
}
.code-dot { width: 10px; height: 10px; border-radius: 0; }
.code-dot--red { background: #c23a17; }
.code-dot--yellow { background: #c9971c; }
.code-dot--green { background: #4e8f5f; }
.code-file {
    margin-left: 8px;
    font-family: var(--mono); font-size: 12px; color: #b6ad97;
    letter-spacing: .05em;
}
.code-copy {
    margin-left: auto;
    font-family: var(--mono); font-size: 11px;
    color: #e6dfcd;
    border: 1px solid var(--coal-line);
    padding: 3px 10px;
    transition: background .12s;
}
.code-copy:hover { background: var(--coal-2); }
.code-copy.ok { color: #86c298; border-color: #4e8f5f; }

.code-tabs { display: flex; border-bottom: 1px solid var(--coal-line); background: #14110c; }
.code-tab {
    padding: 8px 15px;
    font-family: var(--mono); font-size: 12px;
    color: #97907c;
    border-right: 1px solid var(--coal-line);
    position: relative;
}
.code-tab:hover { color: #e6dfcd; }
.code-tab.active { color: var(--paper); background: #100d09; }
.code-tab.active::after {
    content: '';
    position: absolute; left: 0; right: 0; top: 0; height: 2px;
    background: var(--red);
}
.code-body { position: relative; }
.code-pane {
    display: none;
    margin: 0;
    padding: 16px 18px 18px 8px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 12.8px;
    line-height: 1.75;
    color: #d8d0bb;
    min-height: 258px;
}
.code-pane.active { display: block; }
.code-pane .line { display: block; white-space: pre; padding-left: 44px; position: relative; }
.code-pane .ln {
    position: absolute; left: 0; width: 34px;
    text-align: right;
    color: #57503f;
    user-select: none;
}
.tok-str { color: #a8c088; }
.tok-num { color: #dfa15a; }
.tok-key { color: #7fb3c9; }
.tok-bool { color: #c883b1; }

/* 词表抽样（暗色区内的表格） */
.gloss-head {
    display: flex; align-items: baseline; justify-content: space-between;
    margin: 44px 0 0;
    border-top: 1px dashed var(--coal-line);
    padding-top: 22px;
}
.gloss-title { font-family: var(--serif); font-size: 18px; font-weight: 800; color: var(--paper); }
.gloss-note { font-family: var(--mono); font-size: 11px; color: #97907c; }
.gloss-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 14px;
    font-size: 14px;
}
.gloss-table th {
    text-align: left;
    font-family: var(--mono); font-size: 10.5px; letter-spacing: .18em;
    color: #97907c; font-weight: 400;
    padding: 8px 14px;
    border-bottom: 1px solid var(--coal-line);
}
.gloss-table td {
    padding: 10px 14px;
    border-bottom: 1px dashed var(--coal-line);
    color: #cdc4ae;
}
.gloss-table tr { transition: background .12s; }
.gloss-table tbody tr:hover { background: rgb(230 223 205 / .05); }
.gloss-table td.g-zh { color: var(--paper); font-weight: 600; width: 30%; }
.gloss-table td.g-src { font-family: var(--mono); font-size: 11px; color: #86c298; }
.gloss-more {
    display: inline-block; margin-top: 14px;
    font-family: var(--mono); font-size: 12px;
    color: #e88a6a;
    border-bottom: 1px dashed #e88a6a;
    padding-bottom: 1px;
}
.gloss-more:hover { color: var(--paper); border-color: var(--paper); }

/* ---- 18. 场景方案 ---- */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    border: 2px solid var(--ink);
    background: var(--paper);
    padding: 26px 24px 24px;
    position: relative;
    transition: transform .15s ease, box-shadow .15s ease;
    display: flex; flex-direction: column;
}
.case-card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.case-label {
    position: absolute; top: -2px; left: -2px;
    background: var(--ink); color: var(--paper);
    font-family: var(--mono); font-size: 10px; letter-spacing: .18em;
    padding: 4px 10px;
}
.case-title { font-family: var(--serif); font-size: 20px; font-weight: 800; margin: 26px 0 10px; }
.case-desc { font-size: 14.5px; color: var(--ink-soft); flex: 1; }
.case-link {
    display: inline-flex; align-items: center; gap: 7px;
    margin-top: 20px;
    font-family: var(--mono); font-size: 13px;
    color: var(--red);
    border-bottom: 1.5px solid var(--red);
    align-self: flex-start;
    padding-bottom: 2px;
}
.case-link svg { transition: transform .15s; }
.case-card:hover .case-link svg { transform: translateX(4px); }

/* ---- 19. 定价 ---- */
.pricing-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px;
    align-items: stretch;
}
.pricing-card {
    border: 2px solid var(--ink);
    background: var(--paper);
    padding: 28px 26px 26px;
    position: relative;
    display: flex; flex-direction: column;
    transition: transform .15s, box-shadow .15s;
}
.pricing-card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.pricing-card--featured {
    background: #fbf7ec;
    border-color: var(--red);
    box-shadow: var(--shadow-hard-red);
}
.pricing-card--featured:hover { box-shadow: 8px 8px 0 var(--red); }
.pricing-badge {
    position: absolute; top: -13px; right: 18px;
    background: var(--red); color: var(--paper);
    font-family: var(--serif); font-size: 13px; font-weight: 700;
    padding: 3px 12px;
    transform: rotate(2deg);
    border: 1.5px solid var(--ink);
    box-shadow: 2px 2px 0 var(--ink);
}
.pricing-name { font-family: var(--serif); font-size: 20px; font-weight: 900; }
.pricing-desc { font-size: 13px; color: var(--ink-mute); margin-top: 3px; }
.pricing-price {
    font-family: var(--serif);
    font-size: 38px; font-weight: 900;
    margin: 18px 0 4px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--ink);
    line-height: 1.15;
}
.pricing-card--featured .pricing-price { color: var(--red); }
.pricing-features { margin: 18px 0 24px; display: grid; gap: 10px; flex: 1; }
.pricing-features li { display: flex; gap: 10px; font-size: 14px; color: var(--ink-soft); }
.pricing-features .check {
    font-family: var(--mono); color: var(--red); font-weight: 700; flex-shrink: 0;
}
.pricing-features .check::after { content: ' '; }
.pricing-card .btn { width: 100%; }
.pricing-note {
    margin-top: 30px;
    font-family: var(--mono); font-size: 12px; color: var(--ink-mute);
    text-align: center;
}
.pricing-note::before { content: '* '; color: var(--red); }

/* ---- 20. FAQ ---- */
.faq-grid {
    display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
}
.faq-aside { position: sticky; top: calc(var(--header-h) + 30px); }
.faq-aside .section-head { margin-bottom: 18px; }
.faq-aside .btn { margin-top: 20px; }
.faq-aside .aside-meta {
    margin-top: 26px;
    font-family: var(--mono); font-size: 11.5px; color: var(--ink-mute);
    line-height: 2;
}
.faq-aside .aside-meta b { color: var(--red); font-weight: 400; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--ink); }
.faq-question {
    width: 100%;
    display: flex; align-items: center; gap: 16px;
    padding: 17px 6px;
    text-align: left;
    font-size: 15.5px; font-weight: 600;
    transition: background .12s;
}
.faq-question:hover { background: var(--paper-2); }
.faq-idx { font-family: var(--mono); font-size: 12px; color: var(--red); flex-shrink: 0; width: 42px; }
.faq-arrow {
    margin-left: auto;
    font-family: var(--mono); font-size: 17px; color: var(--ink-mute);
    transition: transform .2s;
    flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(45deg); color: var(--red); }
.faq-answer { display: none; }
.faq-item.open .faq-answer { display: block; }
.faq-answer-inner {
    padding: 0 6px 20px 64px;
    font-size: 14.5px; color: var(--ink-soft);
}

/* ---- 21. 尾部 CTA ---- */
.cta-section {
    background: var(--red);
    color: var(--paper);
    border-bottom: 2px solid var(--ink);
    position: relative;
}
.cta-inner { padding: 78px 0; text-align: center; position: relative; }
.cta-inner::before, .cta-inner::after {
    content: '+';
    position: absolute;
    font-family: var(--mono); font-size: 22px; color: rgb(243 239 229 / .6);
}
.cta-inner::before { left: 6px; top: 22px; }
.cta-inner::after { right: 6px; bottom: 22px; }
.cta-kicker {
    font-family: var(--mono); font-size: 11px; letter-spacing: .34em;
    color: rgb(243 239 229 / .75);
    display: block; margin-bottom: 16px;
}
.cta-title {
    font-family: var(--serif);
    font-size: clamp(28px, 4vw, 46px);
    font-weight: 900;
    line-height: 1.3;
}
.cta-desc { margin-top: 14px; font-size: 15.5px; color: rgb(243 239 229 / .88); }
.cta-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.cta-actions .btn-paper:hover { box-shadow: 3px 3px 0 var(--coal); }
.cta-fine {
    margin-top: 26px;
    font-family: var(--mono); font-size: 11px; letter-spacing: .1em;
    color: rgb(243 239 229 / .65);
}

/* ---- 22. 页脚 ---- */
.site-footer { background: var(--coal); color: #b6ad97; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 54px 0 40px;
}
.footer-brand { display: flex; align-items: center; gap: 11px; }
.footer-seal {
    width: 34px; height: 34px;
    background: var(--red); color: var(--paper);
    font-family: var(--serif); font-size: 18px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    border-radius: 3px;
    transform: rotate(-3deg);
}
.footer-brand-name { font-family: var(--serif); font-size: 18px; font-weight: 800; color: var(--paper); }
.footer-desc { margin-top: 14px; font-size: 13.5px; line-height: 1.8; color: #97907c; max-width: 300px; }
.footer-status {
    display: inline-flex; align-items: center; gap: 8px;
    margin-top: 18px;
    font-family: var(--mono); font-size: 11px; letter-spacing: .08em;
    color: #86c298;
    border: 1px dashed #4e8f5f;
    padding: 4px 10px;
}
.footer-status i { width: 6px; height: 6px; background: #58a06a; border-radius: 50%; animation: pulse-dot 1.8s infinite; }
.footer-heading {
    font-family: var(--mono); font-size: 11px; letter-spacing: .22em;
    color: #97907c; font-weight: 400;
    margin-bottom: 16px;
}
.footer-heading::before { content: '// '; color: #57503f; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { font-size: 13.5px; color: #cdc4ae; width: fit-content; }
.footer-links a:hover { color: var(--paper); text-decoration: underline wavy #e88a6a 1px; text-underline-offset: 4px; }
.footer-info { font-size: 13px; color: #97907c; display: grid; gap: 9px; }
.footer-info a:hover { color: var(--paper); }
.colophon {
    border-top: 1px solid var(--coal-line);
    padding: 18px 0;
    font-family: var(--mono); font-size: 11px; color: #6e6753;
    display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer-bottom {
    border-top: 1px solid var(--coal-line);
    padding: 16px 0 22px;
    display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap;
    font-size: 12.5px; color: #97907c;
}
.footer-bottom-links { display: flex; gap: 18px; }
.footer-bottom-links a { font-family: var(--mono); font-size: 11.5px; color: #97907c; }
.footer-bottom-links a:hover { color: var(--paper); }

/* ---- 23. 回到顶部 ---- */
.back-top {
    position: fixed; right: 22px; bottom: 22px;
    width: 42px; height: 42px;
    background: var(--paper);
    border: 2px solid var(--ink);
    box-shadow: 3px 3px 0 var(--ink);
    display: flex; align-items: center; justify-content: center;
    z-index: 150;
    opacity: 0; pointer-events: none;
    transform: translateY(8px);
    transition: opacity .2s, transform .2s, background .15s;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:hover { background: var(--red); color: var(--paper); }
.back-top:active { transform: translate(2px, 2px); box-shadow: none; }

/* ---- 24. 入场动画 ---- */
.animate-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .55s cubic-bezier(.22,.61,.36,1), transform .55s cubic-bezier(.22,.61,.36,1);
}
.animate-in.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .animate-in { opacity: 1; transform: none; transition: none; }
    .ticker-track { animation: none; }
    .hero-cursor, .hero-eyebrow::before { animation: none; }
}

/* ---- 25. RTL 适配 ---- */
[dir="rtl"] .hero-title { letter-spacing: 0; }
[dir="rtl"] .nav-links a .n-idx { margin-right: 0; margin-left: 4px; }

/* ---- 26. 响应式 ---- */
@media (max-width: 1120px) {
    .feat-row { grid-template-columns: 64px 1fr 130px; }
    .feat-desc { grid-column: 2 / 4; grid-row: 2; }
    .feat-row { row-gap: 8px; }
}
@media (max-width: 1024px) {
    .nav-links { display: none; }
    .menu-toggle { display: flex; }
    .hero-grid { grid-template-columns: 1fr; gap: 44px; padding: 48px 0 44px; }
    .hero-note { display: none; }
    .api-grid { grid-template-columns: 1fr; gap: 40px; }
    .faq-grid { grid-template-columns: 1fr; gap: 34px; }
    .faq-aside { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 760px) {
    .container { padding: 0 18px; }
    .section { padding: 56px 0; }
    .utility-inner .u-right { display: none; }
    .stats-grid { grid-template-columns: 1fr; }
    .stat-cell { border-right: none; border-bottom: 1px solid var(--line-soft); }
    .stat-cell:last-child { border-bottom: none; }
    .feat-row { grid-template-columns: 52px 1fr; padding: 18px 4px; }
    .feat-no { font-size: 24px; }
    .feat-tag { justify-self: start; grid-column: 2; grid-row: 3; }
    .feat-title { grid-column: 2; }
    .feat-desc { grid-column: 2; }
    .steps-grid { grid-template-columns: 1fr; box-shadow: none; }
    .step-card { border-right: none; border-bottom: 1px solid var(--ink); }
    .step-card:last-child { border-bottom: none; }
    .step-dash { display: none !important; }
    .solutions-grid, .pricing-grid { grid-template-columns: 1fr; }
    .workbench { box-shadow: 5px 5px 0 var(--ink); }
    .code-window { box-shadow: 6px 6px 0 rgb(194 58 23 / .9); }
    .code-pane { font-size: 11.5px; padding-left: 4px; }
    .code-pane .line { padding-left: 38px; }
    .demo-out { font-size: 15px; }
    .cta-actions .btn { width: 100%; }
    .hero-cta .btn { flex: 1; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 44px 0 34px; }
    .section-head { flex-direction: column; align-items: flex-start; }
    .section-en { padding-bottom: 0; }
    .faq-answer-inner { padding-left: 6px; }
    .gloss-table td.g-src { display: none; }
    .gloss-table th:nth-child(3) { display: none; }
}